阅读说明：本技术 一种二乙基甲苯二胺水解溶剂蒸馏回收装置 (Diethyl toluene diamine hydrolysis solvent distillation recovery unit ) 是由 张淑侠 于 2021-01-05 设计创作，主要内容包括：本发明公开了一种二乙基甲苯二胺水解溶剂蒸馏回收装置,包括加热箱,所述加热箱壁体内设置有加热机构,所述加热箱内部放置有蒸馏桶,所述蒸馏桶与加热箱之间设置有卡合机构,所述加热箱上端放置有上合盖,所述上合盖与加热箱之间设置有锁定机构,所述上合盖内壁顶端固定连接有电机箱,所述电机箱内部设置有电机,所述电机输出端设置有配合蒸馏桶使用的搅拌机构,所述上合盖顶端壁体上设置有蒸汽管,所述蒸汽管上设置有冷凝机构,所述蒸汽管末端固定连接有出料口,本发明采用加热机构,加热箱内部设置有加热空腔并采用油浴加热的方式,可以使得加热温度稳定上升,从而蒸馏桶内部的溶剂受热均匀,避免由于加热不均匀导致蒸馏设备炸裂的危险。(The invention discloses a distillation and recovery device for a diethyl toluenediamine hydrolysis solvent, which comprises a heating box, wherein a heating mechanism is arranged in the wall body of the heating box, a distillation barrel is placed in the heating box, a clamping mechanism is arranged between the distillation barrel and the heating box, an upper closing cover is placed at the upper end of the heating box, a locking mechanism is arranged between the upper closing cover and the heating box, the top end of the inner wall of the upper closing cover is fixedly connected with a motor box, a motor is arranged in the motor box, the output end of the motor is provided with a stirring mechanism matched with the distillation barrel for use, a steam pipe is arranged on the wall body at the top end of the upper closing cover, a condensing mechanism is arranged on the steam pipe, and the tail end of the steam pipe is fixedly connected with a discharge hole. Thereby the solvent inside the distillation barrel is heated evenly, avoids because the inhomogeneous danger that leads to the distillation plant to explode and split of heating.)

1. The utility model provides a diethyl toluenediamine hydrosolvent distillation recovery unit, includes heating cabinet (1), its characterized in that, be provided with heating mechanism (2) in the heating cabinet (1) wall body, distillation barrel (3) have been placed to heating cabinet (1) inside, be provided with block mechanism (5) between distillation barrel (3) and heating cabinet (1), upper cover (6) has been placed to heating cabinet (1) upper end, be provided with locking mechanical system (7) between upper cover (6) and heating cabinet (1), upper cover (6) inner wall top fixedly connected with motor case (8), motor case (8) inside is provided with motor (9), motor (9) output is provided with rabbling mechanism (10) that cooperate distillation barrel (3) to use, be provided with steam pipe (11) on upper cover (6) top wall body, be provided with condensation mechanism (12) on the steam pipe, steam pipe (11) terminal fixedly connected with discharge gate (13), heating mechanism (2) comprises heating cavity (21) and electric heating wire (22), it is internal that heating cavity (21) are seted up in heating cabinet (1) wall, electric heating wire (22) set up in heating cavity (21) bottom, block mechanism (5) comprise spring (53) and draw-in groove (54) that bullet piece groove (51), bullet piece (52), level set up, bullet piece groove (51) are seted up on heating cabinet (1) inner wall, bullet piece (52) are placed inside bullet piece groove (51), spring (53) one end fixed connection is on bullet piece groove (51) inner wall, the one end and bullet piece (52) bottom fixed connection of bullet piece groove (51) are kept away from in spring (53), draw-in groove (54) are seted up on distillation bucket (3) lateral wall.

2. The distillation recovery device for the hydrolysis solvent of diethyltoluenediamine as claimed in claim 1, wherein said locking mechanism (7) comprises an upper fixing edge (71), a lower fixing edge (72), a fixing bolt (73) and a fixing nut (74), said upper fixing edge (71) is formed by extending the side wall of the upper cover (6) outwards, said lower fixing edge (72) is formed by extending the side wall of the heating box (1) outwards, said fixing bolt (73) is placed in the holes provided on the upper fixing edge (71) and the lower fixing edge (72), and said fixing nut (74) is in threaded connection with the fixing bolt (73).

3. The distillation and recovery device of the hydrolysis solvent of diethyltoluenediamine as claimed in claim 1, wherein said stirring mechanism (10) comprises a stirring blade (101), a fixed steel hoop (102) and a stirring rod (103), said stirring rod (103) is fixedly connected with the output end of the motor (9), said fixed steel hoop (102) is sleeved on the stirring rod (103), and said stirring blade (101) is fixedly connected with the fixed steel hoop (102).

4. The distillation recovery device for the hydrolysis solvent of diethyltoluenediamine as claimed in claim 1, wherein said condensing mechanism (12) comprises a condensing tank (121), a condensing pipe (122), a water outlet pipe (123) and a water inlet pipe (124), said condensing tank (121) is sleeved on the steam pipe (11), said condensing pipe (122) is placed inside said condensing tank (121), and said water outlet pipe (123) and said water inlet pipe (124) are fixedly connected with said condensing pipe (122).

5. The distillation recovery device for the hydrolysis solvent of diethyltoluenediamine as claimed in claim 3, wherein the blade surface of the stirring blade (101) is elliptical, and a plurality of parallel holes are formed on the blade surface of the stirring blade (101).

6. The distillation recovery device of a hydrolysis solvent of diethyltoluenediamine, according to claim 4, wherein the condensation pipe (122) is disposed around the steam pipe (11), the water outlet pipe (123) is disposed at the upper end of the condensation pipe (122), and the water inlet pipe (124) is disposed at the bottom of the condensation pipe (122).

7. The distillation recovery device for the hydrolysis solvent of diethyltoluenediamine as claimed in claim 1, wherein a strainer holder (4) is disposed on the bottom wall of the distillation barrel (3), and the strainer holder (4) is attached to the side wall of the distillation barrel (3).

8. The distillation recovery device for the hydrolysis solvent of diethyltoluenediamine as claimed in claim 2, wherein said upper fixing edge (71) and lower fixing edge (72) are uniformly provided with a plurality of holes for fixing bolts (73).

Technical Field

The invention relates to the technical field of solvent distillation and recovery, in particular to a distillation and recovery device for a hydrolysis solvent of diethyltoluenediamine.

Background

Diethyltoluenediamine refers to a mixture of two isomers of diethyltoluenediamine, abbreviated as DETDA. The product is light yellow to red brown transparent liquid with ammonia smell at room temperature, is slightly soluble in water, is soluble in polar organic solvents such as alcohol, ether and ketone, and has good compatibility with polyether and polyester polyol. The color of the product can become dark after long-term exposure to air, the diethyltoluenediamine is flammable and highly corrosive, irritation and serious burn can be caused by skin and eye contact, the product is harmful after being taken by mistake, specific toxicity data are lacked, and the toxicity of the product can be referred to as the toluenediamine. The main applications are curing agent, antioxidant, chain extender, lubricant, polyurethane raw material, amine catalyst and the like.

The diethyl toluene diamine is used as a chain extender for reacting injection molding polyurethane, a polyurethane coating, epoxy resin, an alkyd resin curing agent, a pesticide, a dye intermediate, a plastic, rubber and oil antioxidant, is an aromatic diamine curing agent for polyurethane elastomers and epoxy resin, is used for pouring, coating and adhesives, and is also a chain extender for polyurethane and polyurea elastomers. The polyurethane prepolymer has high reaction speed with the polyurethane prepolymer, is mainly used for a reaction casting type polyurethane system and a spraying polyurethane (urea) elastic coating system, and has the advantages of high reaction speed, short demoulding time, high initial strength, hydrolysis resistance of a product, heat resistance and the like. In addition, the product can be used as antioxidant for elastomer, lubricant and industrial oil, and chemical synthesis intermediate.

In the production of diethyltoluenediamine, an arylamine aluminum/zinc was used as the alkylation catalyst. The arylamine aluminum/zinc is a solid matter of metal compound, the reaction liquid is a liquid phase, wherein the arylamine aluminum/zinc containing diethyl toluene diamine and ethyl toluene diamine and formed with aluminum is a metal compound, and the metal compound can be dissolved in the diethyl toluene diamine to form a mixed phase state.

However, when the distillation equipment adopted by the conventional distillation and recovery device for the hydrolysis solvent of diethyl toluenediamine works, the solvent is heated by a single heat source, the solvent is heated unevenly, so that the temperature of the solvent in the distillation equipment is inconsistent, and the potential safety hazard of explosion of the distillation equipment due to uneven heating is easy to occur.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, when distillation equipment adopted by a distillation recovery device for a diethyl toluene diamine hydrolysis solvent is in work, the solvent is heated by a single heat source, the solvent is heated unevenly, so that the temperature of the solvent in the distillation equipment is inconsistent, and the safety hazard of explosion of the distillation equipment due to uneven heating is easy to occur.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a diethyl toluene diamine hydrosolvent distillation recovery unit, includes the heating cabinet, be provided with heating mechanism in the heating cabinet wall body, the distillation barrel has been placed to the heating cabinet inside, be provided with block mechanism between distillation barrel and the heating cabinet, the upper cover that closes has been placed to the heating cabinet upper end, be provided with locking mechanical system between upper cover and the heating cabinet, upper cover inner wall top fixedly connected with motor case closes, motor incasement portion is provided with the motor, the motor output end is provided with the rabbling mechanism that the cooperation distillation barrel used, on close and be provided with the steam pipe on the wall body of lid top, be provided with condensation mechanism on the steam pipe, the terminal fixedly connected with discharge gate of steam pipe.

In the above distillation recovery device for the diethyl toluenediamine hydrolysis solvent, the heating mechanism is composed of a heating cavity and an electric heating wire, the heating cavity is arranged in the wall body of the heating box, and the electric heating wire is arranged at the bottom of the heating cavity.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, block mechanism comprises bullet piece groove, bullet piece, the spring and the draw-in groove that the level set up, the bullet piece groove is seted up on the heating cabinet inner wall, the bullet piece is placed at bullet piece inslot portion, spring one end fixed connection is on bullet piece inslot wall, the one end and the bullet piece bottom fixed connection in bullet piece groove are kept away from to the spring, the draw-in groove is seted up on the retort lateral wall.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, locking mechanical system comprises last fixed limit, lower fixed limit, fixing bolt and fixation nut, go up fixed limit and close the outside extension of lid lateral wall by last and form, lower fixed limit is formed by the outside extension of heating cabinet lateral wall, fixing bolt places in the hole that sets up on last fixed limit and lower fixed limit, fixation nut and fixing bolt threaded connection.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, rabbling mechanism comprises stirring leaf, fixed steel hoop and puddler, puddler and motor output end fixed connection, fixed steel hoop cover is established on the puddler, stirring leaf and fixed steel hoop fixed connection.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, condensing mechanism comprises condenser box, condenser pipe, outlet pipe and inlet tube, the condenser box cup joints on the steam pipe, the condenser pipe is placed inside the condenser box, outlet pipe and inlet tube and condenser pipe fixed connection.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, stirring leaf blade face adopts oval structure, seted up a plurality of parallel holes on the blade face of stirring leaf.

In the above distillation recovery device for the hydrolysis solvent of diethyltoluenediamine, the condensation pipe is arranged around the steam pipe, the water outlet pipe is arranged at the upper end of the condensation pipe, and the water inlet pipe is arranged at the bottom of the condensation pipe.

In foretell diethyl toluene diamine hydrosolvent distillation recovery unit, be provided with the screen frame on the distillation barrel bottom wall body, the screen frame is placed with the laminating of distillation barrel lateral wall.

In the above distillation recovery device for the hydrolysis solvent of diethyltoluenediamine, the upper fixing edge and the lower fixing edge are uniformly provided with a plurality of holes matched with the fixing bolts for use.

Compared with the prior art, the invention has the following advantages:

1. the invention adopts the heating mechanism, the heating cavity is arranged in the heating box, and the oil bath heating mode is adopted, so that the heating temperature can be stably raised, the solvent in the distillation barrel is uniformly heated, and the danger of explosion of the distillation equipment caused by nonuniform heating is avoided.

2. According to the invention, the stirring mechanism and the filter screen frame are adopted, so that the solvent in the distillation barrel can be kept in a continuous flowing state, the catalyst in the distillation barrel can not be caked in the distillation process due to temperature change, the internal temperature of the solvent is not consistent, and finally the catalyst is accumulated under the filter screen frame along with the distillation, so that the later-stage collection is facilitated.

3. The invention adopts the condensing mechanism, the water in the condensing pipe is ensured to flow ceaselessly under the action of the water pump, thereby the heat of the steam in the steam pipe can be taken away continuously, meanwhile, the water flow adopts a mode of downward inlet and upward outlet, the heat exchange time is prolonged, the heat can be more sufficient, and the danger of explosion caused by uneven heating of the condensing pipe due to upward inlet and downward outlet is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a distillation recovery device for a hydrolysis solvent of diethyltoluenediamine according to the present invention;

FIG. 2 is a schematic view of the internal structure of a distillation recovery device for a hydrolysis solvent of diethyltoluenediamine according to the present invention;

FIG. 3 is a schematic view of an upper cover structure of a distillation recovery device for a hydrolysis solvent of diethyltoluenediamine according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 2;

FIG. 5 is a schematic diagram of a stirring blade structure of a distillation recovery device for a hydrolysis solvent of diethyltoluenediamine according to the present invention.

In the figure: 1 heating box, 2 heating mechanism, 21 heating cavity, 22 electric heating wire, 3 distillation barrel, 4 filter screen racks, 5 clamping mechanisms, 51 elastic block groove, 52 elastic block, 53 spring, 54 clamping groove, 6 upper closing cover, 7 locking mechanism, 71 upper fixing edge, 72 lower fixing edge, 73 fixing bolt, 74 fixing nut, 8 motor box, 9 motor, 10 stirring mechanism, 101 stirring blade, 102 fixing steel hoop, 103 stirring rod, 11 steam pipe, 12 condensation mechanism, 121 condensation box, 122 condensation pipe, 123 water outlet pipe, 124 water inlet pipe, 13 discharge port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, a diethyl toluene diamine hydrosolvent distillation recovery unit, including heating cabinet 1, be provided with heating mechanism 2 in the 1 wall body of heating cabinet, distillation barrel 3 has been placed to heating cabinet 1 inside, is provided with strainer frame 4 on the 3 bottom wall bodies of distillation barrel, and strainer frame 4 is placed with the 3 lateral walls laminating of distillation barrel to guarantee that the catalyst after the distillation can not disperse, make things convenient for the later stage to the collection of catalyst.

Be provided with block mechanism 5 between distillation barrel 3 and the heating cabinet 1, the upper cover 6 that closes has been placed to 1 upper end of heating cabinet, be provided with locking mechanical system 7 between upper cover 6 and the heating cabinet 1, upper cover 6 inner wall top fixedly connected with motor case 8 closes, the inside motor 9 that is provided with of motor case 8, the motor 9 model is Y112M-2, the motor 9 output is provided with the rabbling mechanism 10 that the cooperation distillation barrel 3 used, be provided with steam pipe 11 on the upper cover 6 top wall body, be provided with condensation mechanism 12 on the steam pipe, the terminal fixedly connected with discharge gate 13 of steam pipe 11.

Heating mechanism 2 comprises heating cavity 21 and electric heating wire 22, and heating cavity 21 is seted up at heating cabinet 1 wall internally, and electric heating wire 22 sets up in heating cavity 21 bottom, has placed the cotton seed oil in the heating cavity 21, and the oil bath is the highest temperature than the water bath, can make the solvent be heated more evenly simultaneously.

The clamping mechanism 5 comprises an elastic block groove 51, an elastic block 52, a horizontally arranged spring 53 and a clamping groove 54, the elastic block groove 51 is formed in the inner wall of the heating box 1, the elastic block 52 is placed in the elastic block groove 51, one end of the spring 53 is fixedly connected to the inner wall of the elastic block groove 51, one end, far away from the elastic block groove 51, of the spring 53 is fixedly connected with the bottom of the elastic block 52, and the clamping groove 54 is formed in the side wall of the distillation barrel 3.

Locking mechanical system 7 is by last fixed limit 71, lower fixed limit 72, fixing bolt 73 and fixation nut 74 constitute, it forms to go up fixed limit 71 by last lid 6 lateral wall that closes to extend outward, lower fixed limit 72 is formed by heating cabinet 1 lateral wall that extends outward, fixing bolt 73 places in the hole that sets up on last fixed limit 71 and lower fixed limit 72, fixation nut 74 and fixing bolt 73 threaded connection, go up fixed limit 71 and evenly set up the hole that a plurality of cooperation fixing bolt 73 used on the fixed limit 72 down, adopt a plurality of holes can make and close between lid 6 and the heating cabinet 1 laminating inseparabler on the messenger, thereby prevent that distilled gas from overflowing.

Rabbling mechanism 10 is by stirring leaf 101, fixed hoop 102 and puddler 103 are constituteed, puddler 103 and the output fixed connection of motor 9, fixed hoop 102 cover is established on puddler 103, stirring leaf 101 and fixed hoop 102 fixed connection, stirring leaf 101 blade surface adopts oval structure, a plurality of parallel holes have been seted up on the blade surface of stirring leaf 101, the device sets up many to the stirring leaf, can stir the solvent in the distillation barrel simultaneously, the area of contact of stirring leaf and solvent has been increased, the porous resistance when can reducing the stirring simultaneously that sets up on the stirring leaf, the aspect stirring.

Condensation mechanism 12 comprises condensing tank 121, condenser pipe 122, outlet pipe 123 and inlet tube 124, and condensing tank 121 cup joints on steam pipe 11, and condenser pipe 122 is placed inside condensing tank 121, and outlet pipe 123 and inlet tube 124 and condenser pipe 122 fixed connection, and condenser pipe 122 encircles and sets up around steam pipe 11, and outlet pipe 123 sets up the upper end at condenser pipe 122, and inlet tube 124 sets up the bottom at condenser pipe 122.

The working principle is as follows:

firstly, putting a solvent to be distilled into the distillation barrel 3, then putting the distillation barrel 3 into the heating box 1, pressing the clamping groove 54 on the distillation barrel 3 on the clamping block 52 on the side wall of the heating box 1, compressing the bottom spring 53 by the clamping block 52, so that the top of the clamping block 52 enters the clamping groove 54, and clamping the distillation barrel 3 and the heating box 1 under the action of the spring 53.

Then the upper closing cover 6 is placed at the upper end of the heating box 1, so that the upper fixing edge 71 is aligned with the hole on the lower fixing edge 72, the fixing bolt 73 is placed in the hole, and finally the fixing nut and the fixing bolt 73 are locked, so that the locking between the upper closing cover 6 and the heating barrel 1 is completed.

The water is injected into the condensation pipe 122 through the water inlet pipe 124 and then flows out through the water outlet pipe 123, and the start of distillation is completed.

Firstly, the electric heating wire 22 is electrified and heated, the electric heating wire 22 heats a heating medium in the heating cavity 21, so that a solvent to be distilled in the distillation barrel 3 is uniformly heated, the motor 9 is turned on, the output end of the motor 9 drives the stirring rod 103 to rotate, the stirring rod 103 drives the stirring blade 101 fixedly connected with the stirring rod to rotate through the steel hoop 102, and the stirring blade 101 synchronously stirs the distilled solvent.

After reaching the proper temperature, the solvent vapor is introduced into the vapor pipe 11, and after reaching the condensation tank 121, the condensation pipe 122 takes away the temperature of the solvent vapor in the vapor pipe 11, so that the solvent vapor is converted into liquid and finally flows out through the discharge port 13.

After the distillation is finished, the catalyst in the distillation barrel 3 is kept under the filter screen frame 4, and finally the device is opened, the distillation barrel 3 is taken out, and the filter screen frame 4 is taken down, so that the residual catalyst can be taken out.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.