阅读说明：本技术 一种地沟油脱胶脱金属盐工艺 (Process for degumming and demetallizing salt of illegal cooking oil ) 是由 郑永庭 于 2020-06-09 设计创作，主要内容包括：本发明公开了一种地沟油脱胶脱金属盐工艺,首先通过酸化与水化处理,使地沟油中的胶质成分聚集分离,然后再对地沟油进行电脱盐处理,使溶解有金属盐的水相与油相分离,从而除去地沟油中的金属盐成分与水成分,具体的,通过地沟油脱胶脱金属盐装置对地沟油进行脱胶脱金属盐,其中通过混合腔的加工处理,能够使去离子水、破乳剂以及酸在地沟油中均匀分散,有利于酸化、水化的进行,以及电脱盐过程中液滴的聚合,从而提升脱胶率并降低产品地沟油中的水分含量,同时一体化设置能够缩小占地面积,提升装置的整合度,将动力输出装置、输出调节装置与混合腔分散设置,提升了检修时的便捷性,同时连续化的生产提升了工作效率,符合现代工业生产需要。(The invention discloses a process for degumming and demetallizing of illegal cooking oil, which comprises the steps of gathering and separating colloid components in the illegal cooking oil through acidification and hydration treatment, then carrying out electric desalting treatment on the illegal cooking oil to separate water phase in which metal salts are dissolved from oil phase so as to remove metal salt components and water components in the illegal cooking oil, and concretely, carrying out degumming and demetallizing treatment on the illegal cooking oil through an illegal cooking oil degumming and demetallizing device, wherein deionized water, a demulsifier and acid can be uniformly dispersed in the illegal cooking oil through processing treatment of a mixing chamber, which is beneficial to the proceeding of acidification and hydration and the polymerization of liquid drops in the electric desalting process so as to improve the degumming rate and reduce the water content in the illegal cooking oil product, meanwhile, the integral arrangement can reduce the floor area and the integration degree of the device, and a power output device, an output adjusting device and the mixing chamber are dispersedly arranged, the convenience during maintenance is improved, meanwhile, the continuous production improves the working efficiency, and the requirement of modern industrial production is met.)

1. The process for degumming and demetallizing salt of illegal cooking oil is characterized by comprising the following steps of:

firstly, filtering a illegal cooking oil raw material to remove solid impurities and large-particle colloidal impurities in the illegal cooking oil raw material, and heating the illegal cooking oil raw material to 40-60 ℃ for later use;

and secondly, inputting heated illegal cooking oil into a mixing cavity (416) in the illegal cooking oil degumming and demetallization salt removing device, uniformly mixing acid liquor and illegal cooking oil raw materials through the mixing cavity (416), inputting the mixture into an intermediate product box (3) for heating and stirring, then inputting the illegal cooking oil in the intermediate product box (3) into the mixing cavity (416), uniformly mixing deionized water, a demulsifier and the illegal cooking oil through the mixing cavity (416), inputting the mixture into a containing box (61), filtering the illegal cooking oil in the containing box (61) through a filtering device after heating, inputting the heated mixture into an electric desalting device (2) to complete electric desalting treatment, and separating oil content from salt-containing water to obtain the degumming and demetallization salt-containing illegal cooking oil.

2. The process for degumming and demetallizing the illegal cooking oil according to claim 1, wherein in the second step, the acid solution is one of phosphoric acid, citric acid or oxalic acid, the pH value of the acid solution is 2-2.5, and the addition amount of the acid solution is 0.2-2% of the volume of the illegal cooking oil.

3. The process for degumming and demetallizing the illegal cooking oil according to the claim 1, wherein the heating temperature of the intermediate product tank (3) for heating the illegal cooking oil is 50-70 ℃, the heating time is 15-30min, the temperature of deionized water input into the mixing cavity (416) in the second step is 60-95 ℃, and the addition amount of the deionized water is 2-6% of the volume of the illegal cooking oil.

4. The process for degumming and demetallizing salt of illegal cooking oil according to claim 1, wherein the device for degumming and demetallizing salt of illegal cooking oil comprises a rack (1), a mixing and dispersing device (4) fixedly arranged on the rack (1), an acid feeding device (5) communicated with the mixing and dispersing device (4), an intermediate product box (3) and an electric desalting device (2) fixedly arranged on the rack (1), wherein a finished product storage device (6) is arranged below the mixing and dispersing device (4);

the mixing and dispersing device (4) comprises a power output device, an output adjusting device and a mixing cavity, the power output device comprises a first driving air cylinder (41) fixedly mounted on a first mounting plate (411), the first mounting plate (411) is fixedly connected with a second mounting plate (414) through a first connecting rod (413), a sliding mounting block (412) is slidably sleeved on the first connecting rod (413), a first driving motor (42) is fixedly mounted on the sliding mounting block (412), a conducting stop block (421) is also fixedly connected on the sliding mounting block (412) through a second connecting rod (422), and the surface of the conducting stop block (421) opposite to the first driving motor (42) is fixedly connected with an air cylinder shaft of the first driving air cylinder (41);

the output adjusting device comprises a third mounting plate (44) and two second driving cylinders (43) which are arranged in parallel, wherein cylinder mounting blocks (45) are fixedly sleeved on the second driving cylinders (43), the two second driving cylinders (43) are fixedly mounted on the rack (1) through the cylinder mounting blocks (45), the end parts of cylinder shafts of the second driving cylinders (43) are fixedly connected with the third mounting plate (44), and the third mounting plate (44) is fixedly connected with the second mounting plate (414) through a third connecting rod (431);

a bearing mounting seat (415) is fixedly arranged on one surface of the second mounting plate (414), a connecting shaft (417) is rotatably arranged on the bearing mounting seat (415), a mixing cavity (416) is fixedly arranged on the other side of the second mounting plate (414), a stirring shaft is rotatably arranged in the mixing cavity (416), stirring blades are fixedly arranged on the side wall of the stirring shaft, one end of the stirring shaft is fixedly connected with one end of a connecting shaft (417), a clamping block is arranged on the side wall of the other end of the connecting shaft (417), a blind hole is arranged at the shaft extension end part of the first driving motor (42), the inner wall of the blind hole is provided with a clamping groove matched with the clamping block on the outer wall of the connecting shaft (417), when the first driving cylinder (41) drives the first driving motor (42) to move downwards, the shaft extension of the first driving motor (42) is clamped with one end of the connecting shaft (417) through the clamping groove and the clamping block structure;

the acid feeding device (5) comprises an acid storage tank (51), the acid storage tank (51) is communicated with one end of a feeding pipe (52), the other end of the feeding pipe (52) is communicated with a mixing cavity (416), the feeding pipe (52) is also connected with a transfer pipeline (53), and the transfer pipeline (53) is respectively connected with an air inlet pipe, a water inlet pipe and an oil inlet pipe through a four-way pipe;

the mixing chamber (416) extends through the third mounting plate (44);

the finished product storage device (6) comprises an accommodating box (61), the outer wall of the accommodating box (61) is fixedly installed on the rack (1), an accommodating box sealing plate (62) is fixedly installed on the top of the accommodating box (61), and a first feeding hole (68) is formed in the accommodating box sealing plate (62);

the accommodating box mounting plate (62) is fixedly provided with two parallel sliding rails (63), the accommodating box mounting plate (62) is connected with a transfer box (64) in a sliding manner through the sliding rails (63), one side surface of the transfer box (64) is fixedly provided with a reinforcing block (65), the reinforcing block (65) is connected with a cylinder shaft of a third driving cylinder (66), and the third driving cylinder (66) is fixedly arranged on the rack (1);

a second feeding hole (69) is formed in the top of the transfer box (64), a discharging hole (67) is formed in the side wall of the transfer box (64), and the discharging hole (67) is connected with the intermediate product box (3) through a pipeline;

the electric desalting device (2) comprises an electric desalting tank (24), the electric desalting tank (24) is fixedly arranged on a desalting tank support (22), a transfer pump (23) is also fixedly arranged on the desalting tank support (22), the transfer pump (23) is used for pumping a finished product which is subjected to desalting and dewatering treatment in the electric desalting tank away from the electric desalting tank (24), and a pipeline joint (21) communicated with the electric desalting tank (24) is arranged on the electric desalting tank (24);

be provided with the pump in intermediate product case (3) for the acidification trench oil in intermediate product case (3) advances oil pipe and shifts to mixing chamber (416) in through transfer pipeline (53) and transfer pipeline (53) connection, be provided with the pump in holding case (61) for the trench oil that will accomplish in holding case (61) and come unstuck filters to filter equipment through pipeline transmission, filters the colloid composition and gets rid of, and the trench oil after filtering through filter equipment passes through pipeline transmission and gets into electrodeionization jar (24).

5. The process for degumming and demetallizing salt of illegal cooking oil according to claim 4, wherein a rubber layer is arranged on one surface of the conductive block (421) close to the first driving motor (42), a rubber ring is arranged at the end part of the outlet of the mixing cavity (416), the inner wall and the edge of the first feeding hole (68) are covered with a rubber layer, and the inner wall and the edge of the second feeding hole (69) are covered with a rubber layer.

6. The process for degumming and demetallizing salt according to claim 4, wherein the feeding pipe (52) is provided with a one-way valve at a position between the acid storage tank (51) and the transit pipeline (53).

7. The process for degumming and removing metal salts from illegal cooking oil according to claim 4, wherein a heating device and a stirring device are arranged in the intermediate product tank (3), and a heating device and a stirring device are arranged in the containing tank (61).

8. The process for degumming and removing metal salts from illegal cooking oil according to claim 4, wherein a gas-liquid separation device is further arranged between the containing box (61) and the filtering device.

9. A process according to claim 4, characterized in that the number of the intermediate product tanks (3) is two, and when the amount of acidified waste oil in one of the intermediate product tanks reaches a preset value, the transfer of acidified waste oil in the transfer tank (64) to the other intermediate product tank (3) is started.

10. The process for degumming and demetallizing salt of illegal cooking oil according to claim 4, wherein the method for degumming and demetallizing salt of illegal cooking oil by the illegal cooking oil degumming and demetallizing salt removing device comprises the following steps:

the third driving motor (66) drives the transfer box (64) to enable a second feeding hole (69) in the top of the transfer box (64) to be positioned under the mixing cavity (416), and the second driving cylinder (43) drives the mixing cavity (416) to integrally move downwards to enable the end part of the mixing cavity (416) to be in sealing butt joint with the second feeding hole (69);

the first driving cylinder (41) drives the first driving motor (42) to move downwards, and the shaft extension of the first driving motor (42) is clamped with one end of the connecting shaft (417) through the clamping groove and the clamping block structure, so that the first driving motor (42) drives the connecting shaft (417) to rotate, and further drives the stirring shaft in the mixing cavity (416) to rotate;

inputting the swill-cooked dirty oil which is filtered and purified and is heated to 40-60 ℃ into a mixing cavity (416) through a feeding pipe (52) and an oil inlet pipe connected with the feeding pipe (52), transmitting acid liquor in an acid storage tank (51) into the mixing cavity (416) through the feeding pipe (52), mixing the acid liquor and the swill-cooked dirty oil in the mixing cavity, and transferring the swill-cooked dirty oil after mixing into an intermediate product tank (3) from a transfer tank through a discharge hole (67) connected with a transfer tank (64) and a pipeline of the intermediate product tank (3);

when the illegal cooking oil in the intermediate product box (3) reaches a preset amount, the input of acidified illegal cooking oil is stopped, the illegal cooking oil is heated through the intermediate product box (3), then the acidified illegal cooking oil in the intermediate product box (3) is transferred into a mixing cavity (416) through an oil inlet pipe connected with a transfer pipeline (53) and the transfer pipeline (53) through a pump arranged in the intermediate product box (3), and meanwhile, deionized water and a demulsifier are input into the mixing cavity (416) through an water inlet pipe connected with the transfer pipeline (53);

the transfer box (64) is driven by a third driving motor (66), so that a first feeding hole (68) in a sealing plate (62) of the containing box is positioned under a mixing cavity (416), the mixing cavity (416) is driven to integrally move downwards by a second driving cylinder (43), the end part of the mixing cavity (416) is in sealed butt joint with the first feeding hole (68), and the swill-cooked dirty oil mixed with deionized water in the previous step is transferred into the containing box (61);

in the adding process of the illegal cooking oil, the containing box (61) keeps heating the illegal cooking oil, the temperature of the illegal cooking oil is 40-60 ℃, when the quantity of the illegal cooking oil in the containing box (61) reaches a preset value, the illegal cooking oil is stopped to be input, the heating treatment is kept, the illegal cooking oil in the containing box (61) is transferred into the electric desalting tank (24) after 15-30min, colloid is removed through filtering by a filtering device in the transferring process, the electric power is supplied to separate the illegal cooking oil in the electric desalting tank (24) from oil water, the separated illegal cooking oil and water components containing phosphoric acid and metal salt are separated and pumped out, and the illegal cooking oil which is degummed and is subjected to metal salt removal is obtained.

Technical Field

The invention belongs to the technical field of illegal cooking oil recovery, and particularly relates to a process for degumming and demetallizing salt of illegal cooking oil.

Background

The swill-cooked dirty oil refers to various inferior oils in life, such as recovered edible oil, repeatedly used frying oil and the like, the largest source of the swill-cooked dirty oil is an oil separation tank of a sewer of a large-scale urban restaurant, the main component of the swill-cooked dirty oil is triglyceride, but the swill-cooked dirty oil contains more pathogenic and carcinogenic toxic substances than real edible oil, so that cancer can be caused by long-term eating, and the swill-cooked dirty oil has great harm to human bodies.

However, since the main component of the waste oil is triglyceride, the waste oil can not be used as edible oil, but can be used as industrial raw material to produce products such as fuel, etc., but because the content of impurities in the waste oil is high, the waste oil needs to be treated before processing to remove metal salts and colloids such as protein, free fatty acid, mucus, etc. in the waste oil, thereby facilitating the subsequent production, but in the prior art, the degumming and demetallization operations are non-continuous production, which is not good for improving the production efficiency, and when the acid is added, the demulsifier is stirred, the stirring time is long, and uniformly dispersed liquid drops are difficult to form in the waste oil, thereby affecting the hydration, acidification and electric desalting, and the invention provides the following technical solutions in order to solve the problems.

Disclosure of Invention

The invention aims to provide a process for degumming and demetallizing salt of illegal cooking oil.

The technical problems to be solved by the invention are as follows:

because the content of impurities in the illegal cooking oil is high, the illegal cooking oil needs to be treated before processing to remove metal salts, protein, free fatty acid, mucilage and other colloids in the illegal cooking oil, so that the subsequent production is convenient, but in the prior art, the degumming and demetallization operations are non-continuous production, which is not beneficial to improving the production efficiency, and when acid is added, water is added and the demulsifier is used for stirring, the stirring time is long, and uniformly dispersed liquid drops are difficult to form in the illegal cooking oil, so that the hydration, acidification and electric desalting are influenced.

The purpose of the invention can be realized by the following technical scheme:

a process for degumming and demetallizing salt of illegal cooking oil comprises the following steps:

firstly, filtering a illegal cooking oil raw material to remove solid impurities and large-particle colloidal impurities in the illegal cooking oil raw material, and heating the illegal cooking oil raw material to 40-60 ℃ for later use;

and secondly, inputting heated illegal cooking oil into a mixing cavity in the illegal cooking oil degumming and demetallization salt removing device, uniformly mixing acid liquor and illegal cooking oil raw materials through the mixing cavity, inputting the mixture into an intermediate product box for heating and stirring, then inputting illegal cooking oil in the intermediate product box into the mixing cavity, uniformly mixing deionized water, a demulsifier and the illegal cooking oil through the mixing cavity, inputting the mixture into a containing box, filtering the illegal cooking oil through a filtering device after heating in the containing box, inputting the heated mixture into an electric desalting device for completing electric desalting treatment, and separating oil content from water containing salt and acid to obtain the illegal cooking oil with degumming and demetallization salt.

As a further scheme of the invention, in the second step, the acid solution is one of phosphoric acid, citric acid or oxalic acid, the pH value of the acid solution is 2-2.5, and the addition amount of the acid solution is 0.2-2% of the volume of the illegal cooking oil.

As a further scheme of the invention, the heating temperature of the intermediate product box for heating the illegal cooking oil is 50-70 ℃, the heating time is 15-30min, and the temperature of deionized water input into the mixing cavity in the second step is 60-95 ℃, wherein the addition amount of the deionized water is 2-6% of the volume of the illegal cooking oil.

As a further scheme of the invention, the illegal cooking oil degumming and metal salt removing device comprises a rack, a mixing and dispersing device fixedly arranged on the rack, an acid feeding device communicated with the mixing and dispersing device, an intermediate product box fixedly arranged on the rack and an electric desalting device, wherein a finished product storage device is arranged below the mixing and dispersing device;

the mixing and dispersing device comprises a power output device, an output adjusting device and a mixing cavity, wherein the power output device comprises a first driving air cylinder fixedly arranged on a first mounting plate, the first mounting plate is fixedly connected with a second mounting plate through a first connecting rod, a sliding mounting block is sleeved on the first connecting rod in a sliding manner, a first driving motor is fixedly arranged on the sliding mounting block, a conduction stop block is also fixedly connected on the sliding mounting block through a second connecting rod, and the surface of the conduction stop block, which is opposite to the first driving motor, is fixedly connected with an air cylinder shaft of the first driving air cylinder;

the output adjusting device comprises a third mounting plate and two second driving cylinders arranged in parallel, wherein cylinder mounting blocks are fixedly sleeved on the second driving cylinders, the two second driving cylinders are fixedly mounted on the rack through the cylinder mounting blocks, the end parts of cylinder shafts of the second driving cylinders are fixedly connected with the third mounting plate, and the third mounting plate is fixedly connected with the second mounting plate through a third connecting rod;

the first driving cylinder drives the first driving motor to move downwards, the shaft extension of the first driving motor and one end of the connecting shaft are clamped with the fixture block structure through the fixture groove;

the acid feeding device comprises an acid storage tank, the acid storage tank is communicated with one end of a feeding pipe, the other end of the feeding pipe is communicated with the mixing cavity, the feeding pipe is also connected with a transfer pipeline, and the transfer pipeline is respectively connected with an air inlet pipe, a water inlet pipe and an oil inlet pipe through a four-way pipe;

the mixing cavity penetrates through the third mounting plate;

the finished product storage device comprises an accommodating box, the outer wall of the accommodating box is fixedly arranged on the rack, an accommodating box sealing plate is fixedly arranged on the top of the accommodating box, and a first feeding hole is formed in the accommodating box sealing plate;

the accommodating box mounting plate is fixedly provided with two parallel slide rails, the accommodating box mounting plate is connected with a transfer box in a sliding manner through the slide rails, one side surface of the transfer box is fixedly provided with a reinforcing block, the reinforcing block is connected with a cylinder shaft of a third driving cylinder, and the third driving cylinder is fixedly arranged on the rack;

the top of the transfer box is provided with a second feeding hole, the side wall of the transfer box is provided with a discharging hole, and the discharging hole is connected with an intermediate product box through a pipeline;

the electric desalting device comprises an electric desalting tank, the electric desalting tank is fixedly arranged on a desalting tank support, a transfer pump is also fixedly arranged on the desalting tank support and used for pumping a finished product which is subjected to desalting and dewatering treatment in the electric desalting tank out of the electric desalting tank, and a pipeline joint communicated with the electric desalting tank is arranged on the electric desalting tank;

the utility model discloses a device for the acidification trench oil that will accomplish degummed in the case that holds, including the intermediate product incasement, the intermediate product incasement is provided with the pump for in transferring the acidification trench oil of intermediate product incasement into the oil pipe and transferring to the hybrid chamber through transfer pipeline and transfer pipeline connection, the incasement that holds is provided with the pump for the trench oil that will accomplish in the case and come unstuck filters through pipeline transmission to filter equipment, filters the colloid composition and gets rid of, and the trench oil after filtering through filter equipment passes through pipeline transmission and gets into the electrodeionization jar.

As a further scheme of the invention, one side of the conduction stop block, which is close to the first driving motor, is provided with a rubber layer, the end part of the outlet of the mixing cavity is provided with a rubber ring, the inner wall and the edge of the first feeding hole are covered with a rubber layer, and the inner wall and the edge of the second feeding hole are covered with a rubber layer.

As a further scheme of the invention, the feeding pipe is provided with a one-way valve at a position between the acid storage tank and the transfer pipeline.

As a further aspect of the present invention, a heating device and a stirring device are disposed in the intermediate product tank, and a heating device and a stirring device are disposed in the accommodating tank.

As a further aspect of the present invention, a gas-liquid separation device is further disposed between the accommodating box and the filtering device.

As a further aspect of the present invention, the number of the intermediate product tanks is set to two, and when the amount of the acidified illegal cooking oil in one of the intermediate product tanks reaches a preset value, the transfer of the acidified illegal cooking oil in the transfer tank to the other intermediate product tank is started.

As a further scheme of the invention, the method for degumming and demetallizing the swill-cooked dirty oil by the swill-cooked dirty oil degumming and demetallizing device comprises the following steps:

the third driving motor drives the transfer box to enable a second feeding hole in the top of the transfer box to be located right below the mixing cavity, and the second driving cylinder drives the mixing cavity to integrally move downwards to enable the end of the mixing cavity to be in sealing butt joint with the second feeding hole;

the first driving cylinder drives the first driving motor to move downwards, and the shaft extension of the first driving motor is clamped with one end of the connecting shaft through the clamping groove and the clamping block structure, so that the first driving motor drives the connecting shaft to rotate, and further drives the stirring shaft in the mixing cavity to rotate;

inputting the illegal cooking oil which is filtered and purified and is heated to 40-60 ℃ into a mixing cavity through a feeding pipe and an oil inlet pipe connected with the feeding pipe, transmitting acid liquid in an acid storage tank into the mixing cavity through the feeding pipe, mixing the acid liquid and the illegal cooking oil in the mixing cavity, and transferring the mixed illegal cooking oil into an intermediate product tank from a transfer tank through a discharge hole connected with the transfer tank and a pipeline connected with the intermediate product tank;

when the illegal cooking oil in the intermediate product box reaches a preset amount, stopping inputting the acidified illegal cooking oil, heating the illegal cooking oil through the intermediate product box, transferring the acidified illegal cooking oil in the intermediate product box into a mixing cavity through a transfer pipeline and an oil inlet pipe connected with the transfer pipeline by a pump arranged in the intermediate product box, and simultaneously inputting deionized water and a demulsifier into the mixing cavity through a water inlet pipe connected with the transfer pipeline;

driving the transfer box through a third driving motor to enable a first feed hole in a sealing plate of the containing box to be located right below the mixing cavity, driving the mixing cavity to integrally move downwards through a second driving cylinder to enable the end part of the mixing cavity to be in sealed butt joint with the first feed hole, and transferring the illegal cooking oil mixed with the deionized water in the previous step into the containing box;

in the adding process of the illegal cooking oil, the containing box keeps heating the illegal cooking oil, the temperature of the illegal cooking oil is 40-60 ℃, when the quantity of the illegal cooking oil in the containing box reaches a preset value, the illegal cooking oil is stopped to be input, the heating treatment is kept, the illegal cooking oil in the containing box is transferred into an electric desalting tank after 15-30min, colloid is removed through filtering by a filtering device in the transferring process, the electric desalting tank is powered on to separate the illegal cooking oil from oil water, the separated illegal cooking oil and water components containing phosphoric acid and metal salt are separated and pumped out, and the illegal cooking oil which is degummed and has been subjected to metal salt removal is obtained.

The invention has the beneficial effects that:

the method comprises the following steps of firstly, carrying out acidification and hydration treatment to aggregate and separate colloid components in the illegal cooking oil, and then carrying out electric desalting treatment on the illegal cooking oil to separate a water phase dissolved with metal salt from oil so as to remove the metal salt components and the water components in the illegal cooking oil, wherein the method for degumming and demetallizing the illegal cooking oil by using an illegal cooking oil degumming and demetallizing device comprises the following steps: the third driving motor drives the transfer box to enable a second feeding hole in the top of the transfer box to be located right below the mixing cavity, and the second driving cylinder drives the mixing cavity to integrally move downwards to enable the end of the mixing cavity to be in sealing butt joint with the second feeding hole; the first driving cylinder drives the first driving motor to move downwards, and the shaft extension of the first driving motor is clamped with one end of the connecting shaft through the clamping groove and the clamping block structure, so that the first driving motor drives the connecting shaft to rotate, and further drives the stirring shaft in the mixing cavity to rotate; inputting the illegal cooking oil which is filtered and purified and then heated to 40-60 ℃ into a mixing cavity through an oil inlet pipe connected with a feed pipe and the feed pipe, transmitting acid liquid in an acid storage tank into the mixing cavity through the feed pipe, mixing the acid liquid and the illegal cooking oil in the mixing cavity, and transferring the mixed illegal cooking oil into an intermediate product tank from a transfer tank through a discharge hole connected with the transfer tank and a pipeline connected with the intermediate product tank; when the illegal cooking oil in the intermediate product box reaches a preset amount, stopping inputting the acidified illegal cooking oil, heating the illegal cooking oil through the intermediate product box, transferring the acidified illegal cooking oil in the intermediate product box into a mixing cavity through a transfer pipeline and an oil inlet pipe connected with the transfer pipeline by a pump arranged in the intermediate product box, and simultaneously inputting deionized water and a demulsifier into the mixing cavity through a water inlet pipe connected with the transfer pipeline; driving the transfer box through a third driving motor to enable a first feed hole in a sealing plate of the containing box to be located right below the mixing cavity, driving the mixing cavity to integrally move downwards through a second driving cylinder to enable the end part of the mixing cavity to be in sealed butt joint with the first feed hole, and transferring the illegal cooking oil mixed with the deionized water in the previous step into the containing box; through the processing of hybrid chamber, can make deionized water, demulsifier and sour homodisperse in the trench oil, be favorable to the acidizing, going on of hydration, and the polymerization of electric desalting in-process liquid drop, thereby promote the rate of coming unstuck and reduce the moisture content in the product trench oil, the trench oil demetallization salt device that comes unstuck that the integration set up simultaneously can reduce area, the degree of integration of hoisting device, with power take off device, output adjusting device and hybrid chamber dispersion set up, the convenience when having promoted the maintenance, the production of serialization simultaneously can also promote work efficiency, accord with modern industrial production's needs.

Drawings

The invention is described in further detail below with reference to the figures and specific embodiments.

FIG. 1 is a schematic structural diagram of a device for degumming and removing metal salt from illegal cooking oil according to the invention;

FIG. 2 is a schematic view of the mixing and dispersing apparatus;

FIG. 3 is a schematic structural view of the power output apparatus;

FIG. 4 is a schematic structural view of a mixing chamber;

FIG. 5 is a schematic diagram of an electric desalter;

FIG. 6 is a schematic diagram of the output regulator;

FIG. 7 is a schematic structural diagram of a finished product storage device;

fig. 8 is a top view of the finished storage device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A process for degumming and demetallizing salt of illegal cooking oil comprises the following steps:

firstly, filtering a illegal cooking oil raw material to remove solid impurities and large-particle colloidal impurities, heating the illegal cooking oil raw material to 40-60 ℃ for later use, and heating the filtered illegal cooking oil to reduce the viscosity of the illegal cooking oil and facilitate the subsequent transmission and transfer of the illegal cooking oil;

secondly, inputting heated illegal cooking oil into a mixing cavity 416 in the illegal cooking oil degumming and demetallization salt removing device, uniformly mixing acid liquid and illegal cooking oil raw materials through the mixing cavity 416, inputting the mixture into an intermediate product box 3 for heating and stirring, then inputting the illegal cooking oil in the intermediate product box 3 into the mixing cavity 416, uniformly mixing deionized water, a demulsifier and the illegal cooking oil through the mixing cavity 416, inputting the mixture into an accommodating box 61, filtering the illegal cooking oil through a filtering device after heating the illegal cooking oil in the accommodating box 61, inputting the mixture into an electric desalting device 2 to complete electric desalting treatment, and separating oil content from moisture containing salt and acid to obtain the illegal cooking oil with degumming and demetallization salt;

in the second step, the acid solution is one of phosphoric acid, citric acid or oxalic acid, the pH value of the acid solution is 2-2.5, and the addition amount of the acid solution is 0.2-2% of the volume of the illegal cooking oil;

the heating temperature for heating the illegal cooking oil through the intermediate product box 3 is 50-70 ℃, the heating time is 15-30min, the temperature of deionized water input into the mixing cavity 416 through a water inlet pipe connected with the transfer pipeline 53 in the second step is 60-95 ℃, and the addition amount of the deionized water is 2-6% of the volume of the illegal cooking oil;

as shown in fig. 1 to 8, the device for degumming and removing metal salts from illegal cooking oil comprises a frame 1, a mixing and dispersing device 4 fixedly installed on the frame 1, an acid feeding device 5 communicated with the mixing and dispersing device 4, an intermediate product box 3 fixedly installed on the frame 1 and an electric desalting device 2, wherein a finished product storage device 6 is arranged below the mixing and dispersing device 4;

the mixing and dispersing device 4 comprises a power output device, an output adjusting device and a mixing cavity, the power output device comprises a first driving air cylinder 41 fixedly mounted on a first mounting plate 411, the first mounting plate 411 is fixedly connected with a second mounting plate 414 through a first connecting rod 413, a sliding mounting block 412 is slidably sleeved on the first connecting rod 413, a first driving motor 42 is fixedly mounted on the sliding mounting block 412, a conducting block 421 is also fixedly connected on the sliding mounting block 412 through a second connecting rod 422, the surface of the conducting block 421 opposite to the first driving motor 42 is fixedly connected with an air cylinder shaft of the first driving air cylinder 41, a rubber layer is arranged on the surface of the conducting block 421 close to the first driving motor 42, the buffering effect is achieved, and the situation that the shell of the first driving motor 42 is deformed due to pressure is prevented;

the output adjusting device comprises a third mounting plate 44 and two second driving cylinders 43 which are arranged in parallel, wherein cylinder mounting blocks 45 are fixedly sleeved on the second driving cylinders 43, the two second driving cylinders 43 are fixedly mounted on the frame 1 through the cylinder mounting blocks 45, the end parts of cylinder shafts of the second driving cylinders 43 are fixedly connected with the third mounting plate 44, and the third mounting plate 44 is fixedly connected with a second mounting plate 414 through a third connecting rod 431;

a bearing mounting seat 415 is fixedly mounted on one surface of the second mounting plate 414, a connecting shaft 417 is rotatably mounted on the bearing mounting seat 415, a mixing chamber 416 is fixedly mounted on the other surface of the second mounting plate 414, a stirring shaft is rotatably mounted in the mixing chamber 416, stirring blades are fixedly mounted on the side wall of the stirring shaft, one end of the stirring shaft is fixedly connected with one end of the connecting shaft 417, a clamping block is arranged on the side wall of the other end of the connecting shaft 417, a blind hole is arranged at the end of the shaft extension of the first driving motor 42, a clamping groove matched with the clamping block on the outer wall of the connecting shaft 417 is arranged on the inner wall of the blind hole, when the first driving cylinder 41 drives the first driving motor 42 to move downwards, the shaft extension of the first driving motor 42 and one end of the connecting shaft 417 are clamped with the clamping block structure through the clamping groove, so that the shaft extension, so that the first driving motor 42 drives the connecting shaft 417 to rotate, and further drives the stirring shaft in the mixing cavity 416 to rotate;

the acid feeding device 5 comprises an acid storage tank 51, the acid storage tank 51 is communicated with one end of a feeding pipe 52, the other end of the feeding pipe 52 is communicated with a mixing cavity 416, the feeding pipe 52 is also connected with a transfer pipeline 53, and the transfer pipeline 53 is respectively connected with an air inlet pipe, a water inlet pipe and an oil inlet pipe through a four-way pipe;

the feed pipe 52 is provided with a one-way valve at a position between the acid storage tank 51 and the transit pipeline 53, so that gas phase or liquid phase input in the transit pipeline 53 is prevented from flowing back into the acid storage tank 51;

the mixing cavity 416 penetrates through the third mounting plate 44, and a rubber ring is arranged at the end part of the outlet of the mixing cavity 416 to achieve the effects of buffering and sealing;

the finished product storage device 6 comprises an accommodating box 61, the outer wall of the accommodating box 61 is fixedly installed on the rack 1, an accommodating box sealing plate 62 is fixedly installed on the top of the accommodating box 61, a first feeding hole 68 is formed in the accommodating box sealing plate 62, a rubber layer covers the inner wall and the edge of the first feeding hole 68, and when the end part of the mixing cavity 416 is in butt joint with the first feeding hole 68, the effects of buffering and sealing are achieved;

the accommodating box mounting plate 62 is fixedly provided with two parallel slide rails 63, the accommodating box mounting plate 62 is connected with a transfer box 64 in a sliding manner through the slide rails 63, one side surface of the transfer box 64 is fixedly provided with a reinforcing block 65, the reinforcing block 65 is connected with a cylinder shaft of a third driving cylinder 66, and the third driving cylinder 66 is fixedly arranged on the rack 1;

a second feeding hole 69 is formed in the top of the transfer box 64, a rubber layer covers the inner wall and the edge of the second feeding hole 69, when the end of the mixing cavity 416 is in butt joint with the second feeding hole 69, buffering and sealing effects are achieved, a discharging hole 67 is formed in the side wall of the transfer box 64, and the discharging hole 67 is connected with the intermediate product box 3 through a pipeline;

the electric desalting device 2 comprises an electric desalting tank 24, the electric desalting tank 24 is fixedly arranged on a desalting tank support 22, a transfer pump 23 is also fixedly arranged on the desalting tank support 22, the transfer pump 23 is used for pumping a finished product which is subjected to desalting and dewatering treatment in the electric desalting tank away from the electric desalting tank 24, and a pipeline joint 21 communicated with the electric desalting tank 24 is arranged on the electric desalting tank 24;

a pump is arranged in the intermediate product box 3 and is used for transferring the acidified illegal cooking oil in the intermediate product box 3 into the mixing cavity 416 through the transfer pipeline 53 and an oil inlet pipe connected with the transfer pipeline 53, a pump is arranged in the accommodating box 61 and is used for conveying the illegal cooking oil which is degummed in the accommodating box 61 to a filtering device through a pipeline for filtering, filtering and removing colloid components, and the illegal cooking oil filtered by the filtering device is conveyed into the electric desalting tank 24 through a pipeline;

the intermediate product box 3 is internally provided with a heating device for heating the acidified illegal cooking oil;

the accommodating box 61 is internally provided with a heating device for heating the illegal cooking oil;

a stirring device is arranged in the intermediate product box 3 and is used for stirring the acidified illegal cooking oil to avoid precipitated colloid precipitation;

a stirring device is arranged in the containing box 61 and is used for stirring the illegal cooking oil to avoid precipitated colloid precipitation;

a gas-liquid separation device is also arranged between the accommodating box 61 and the filtering device;

when high-pressure gas is input through the gas inlet pipe connected with the transit pipeline 53 to promote mixing, gas-liquid separation can be carried out through the gas-liquid separation device subsequently, and subsequent processing is facilitated;

the number of the intermediate product boxes 3 is two, and when the amount of the acidified illegal cooking oil in one intermediate product box reaches a preset value, the acidified illegal cooking oil in the connecting transfer box 64 is transferred to the other intermediate product box 3, so that continuous production is realized;

the method for degumming and demetallizing the swill-cooked dirty oil by the swill-cooked dirty oil degumming and demetallizing device comprises the following steps:

the third driving motor 66 drives the transfer box 64 to enable the second feeding hole 69 at the top of the transfer box 64 to be positioned under the mixing cavity 416, the second driving cylinder 43 drives the mixing cavity 416 to integrally move downwards, and the end part of the mixing cavity 416 is in sealing butt joint with the second feeding hole 69;

the first driving cylinder 41 drives the first driving motor 42 to move downwards, and the shaft extension of the first driving motor 42 is clamped with one end of the connecting shaft 417 through the clamping groove and the clamping block structure, so that the first driving motor 42 drives the connecting shaft 417 to rotate, and further drives the stirring shaft in the mixing cavity 416 to rotate;

inputting the swill-cooked dirty oil heated to 40-60 ℃ after filtering and impurity removal into a mixing cavity 416 through an oil inlet pipe connected with a feed pipe 52 and the feed pipe 52, transmitting the acid liquid in an acid storage tank 51 into the mixing cavity 416 through the feed pipe 52, mixing the acid liquid and the swill-cooked dirty oil in the mixing cavity, and transferring the swill-cooked dirty oil after mixing into an intermediate product tank 3 from a transfer tank through a discharge hole 67 connected with a transfer tank 64 and a pipeline connected with the intermediate product tank 3;

when the illegal cooking oil in the intermediate product box 3 reaches a preset amount, the input of acidified illegal cooking oil is stopped, the illegal cooking oil is heated through the intermediate product box 3, then the acidified illegal cooking oil in the intermediate product box 3 is transferred into the mixing cavity 416 through the transfer pipeline 53 and an oil inlet pipe connected with the transfer pipeline 53 through a pump arranged in the intermediate product box 3, and meanwhile, deionized water and a demulsifier are input into the mixing cavity 416 through the water inlet pipe connected with the transfer pipeline 53;

the transfer box 64 is driven by the third driving motor 66, so that the first feeding hole 68 on the sealing plate 62 of the accommodating box is positioned under the mixing cavity 416, the second driving cylinder 43 drives the mixing cavity 416 to move downwards integrally, the end part of the mixing cavity 416 is in sealing butt joint with the first feeding hole 68, and the illegal cooking oil mixed with the deionized water in the previous step is transferred into the accommodating box 61;

in the adding process of the illegal cooking oil, the containing box 61 keeps heating the illegal cooking oil, the temperature of the illegal cooking oil is 40-60 ℃, when the quantity of the illegal cooking oil in the containing box 61 reaches a preset value, the illegal cooking oil is stopped to be input, the heating treatment is kept, the illegal cooking oil in the containing box 61 is transferred into the electric desalting tank 24 after 15-30min, colloid is removed by filtering through a filtering device in the transferring process, the electric desalting tank 24 is powered on to separate the illegal cooking oil from oil water, the separated illegal cooking oil and water components containing phosphoric acid and metal salt are separated and pumped out, and the illegal cooking oil which is degummed and has metal salt removed is obtained.

According to the invention, through processing treatment of the mixing cavity, deionized water, a demulsifier and acid can be uniformly dispersed in the illegal cooking oil, which is beneficial to acidification and hydration, and polymerization of liquid drops in the electric desalting process, so that the degumming rate is improved, the moisture content in the illegal cooking oil product is reduced, meanwhile, the integrated illegal cooking oil degumming and demetallization salt removing device can reduce the floor area, improve the integration degree of the device, simultaneously improve the working efficiency through continuous production, and meet the requirements of modern industrial production.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.