阅读说明：本技术 一种dotp增塑剂连续化生产设备及其工艺 (Continuous production equipment and process for DOTP plasticizer ) 是由 刘延华 路应伟 宋方俊 曹军 路春生 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种DOTP增塑剂连续化生产设备及其工艺,包括浆料混合釜,所述浆料混合釜的上表面设置有安装管,所述安装管的数量为两个,所述安装管的上表面活动连接有固体瓶。该DOTP增塑剂连续化生产设备及其工艺,通过该DOTP增塑剂连续化生产设备及其工艺,通过浆料混合釜、进料中间罐、进料中间罐、第二酯化釜、溢流管线、调节阀和酯化合格缓冲罐之间的相互配合,通过设置了第一酯化釜和第二酯化釜之间的调节阀,二酯化釜酯化合格后进入酯化合格缓冲罐,增加第二酯化釜-酯化合格缓冲罐流程,改造成果：DOTP生产实现装置全连续化生产,使单位产品能耗降低20％以上,生产时间缩短10％以上,节约能耗,增加产量。(The invention discloses continuous production equipment and a continuous production process of a DOTP plasticizer, and the continuous production equipment comprises a slurry mixing kettle, wherein two installation pipes are arranged on the upper surface of the slurry mixing kettle, and the upper surface of each installation pipe is movably connected with a solid bottle. This DOTP plasticizer serialization production facility and technology, through thick liquids mixing kettle, the feeding intermediate tank, the second esterification cauldron, overflow line, mutually support between governing valve and the qualified buffer tank of esterifying, through having set up the governing valve between first esterification cauldron and the second esterification cauldron, the qualified buffer tank of esterifying gets into after the esterification of diester cauldron is qualified, increase the qualified buffer tank flow of second esterification cauldron-esterification, the transformation achievement: the DOTP production realizes the full-continuous production of the device, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield.)

1. A continuous production device and a continuous production process of DOTP plasticizer comprise a slurry mixing kettle (R601A), and are characterized in that: the upper surface of the slurry mixing kettle (R601A) is provided with two mounting pipes (R1), the number of the mounting pipes (R1) is two, the upper surface of the mounting pipe (R1) is movably connected with a solid bottle (R2), the upper surface of the other mounting pipe (R1) is movably connected with a liquid bottle (R3), a screw pump (R5) is arranged inside the slurry mixing kettle (R601A), the lower surface of the slurry mixing kettle (R601A) is movably connected with a feeding intermediate tank (R3603) through a pipeline A (R6), the outer surface of the pipeline A (R6) is movably connected with an alcohol flushing bottle (B602) through a sewer pipe (R7), the lower surface of the feeding intermediate tank (R3603) is movably connected with a first esterification kettle (R3601) through a pipeline B (R8), the outer surface of the first esterification kettle (R3601) is movably connected with a second esterification kettle (R601), and the first esterification kettle (R631) is connected with a second esterification kettle (R601) through an overflow pipeline (R10), the bottom of the second esterification kettle (R601) is movably connected with an esterification qualified buffer tank (B3605).

2. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the outer surface of the liquid bottle (R3) is provided with scale marks (R4).

3. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the length of the line B (R8) is smaller than the length of the line A (R6).

4. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: a liquid level meter (R9) is arranged in the first esterification kettle (R3601).

5. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the outer surface of the overflow line (R10) is provided with a regulating valve (R11).

6. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the slurry mixing kettle (R601A) and the feeding intermediate tank (R3603) are movably connected through a support frame (R12).

7. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the bottom of the feeding intermediate tank (R3603) is additionally provided with an inlet pipeline B (R8), the pipeline B (R8) is as short as possible, a screw metering pump is additionally arranged for preventing anhydride blockage to enter the first esterification kettle (R3601), an electromagnetic valve at the bottom of the feeding intermediate tank (R3603), a nitrogen back-blowing flow and a liquid level meter (R9) are additionally arranged, and the mass flow meter of the first esterification kettle (R3601) is convenient for metering flow.

8. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: when the first esterification kettle (R3601) needs to reach the esterification rate of 97%, the first esterification kettle (R3601) overflows into the second esterification kettle (R601) to continue esterification until the reaction is qualified, an overflow pipeline (R10) and a liquid level meter (R9) need to be added, the first esterification kettle (R3601) needs to be pressurized, an original second esterification kettle (R601) emptying regulating valve is disassembled and assembled to a first esterification kettle (R3601) emptying line through modification, in addition, an alcohol-water separation tank interface and a regulating valve of the first esterification kettle (R3601) are added, the esterification emptying interface is convenient, a regulating valve (R11) between the first esterification kettle (R3601) and the second esterification kettle (R601) is added, and the feeding of the overflow pipeline (R10) or the regulating valve (R11) is opened to realize the feeding double feeding channels of the first esterification kettle (R3601) and the second esterification kettle (R601).

9. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: and the second esterification kettle (R601) enters an esterification qualified buffer tank (B3605) after esterification is qualified, the flow of the second esterification kettle (R601) -esterification qualified buffer tank (B3605) is added, and the improvement result is as follows: the DOTP production realizes the full-continuous production of the device, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield.

10. A continuous DOTP plasticizer production apparatus and process according to claim 1, wherein: the slurry mixing kettle (R601A) is used as a slurry mixing kettle, solid PTA and quantitative octanol enter the slurry mixing kettle to be uniformly mixed, a flow of feeding the intermediate tank (R3603) from the bottom of the slurry mixing kettle (R601A) needs to be added, a screw pump needs to be added, a flow of feeding the intermediate tank (R3603) and a compressed air blowing line need to be added, and in order to ensure that pipelines of the slurry mixing kettle (R601A) and the intermediate tank (R3603) do not block the pipelines after slurry is pumped, a flow of flushing the slurry mixing kettle (R601A) and the intermediate tank (R3603) with B602 alcohol is added.

Technical Field

The invention relates to the technical field of DOTP production, in particular to continuous production equipment and a continuous production process of a DOTP plasticizer.

Background

As is known, a plasticizer (DOTP) is a substance added for increasing the plasticity and the fluidity of high polymers such as rubber, plastic and paint during processing and enabling a finished product to have flexibility, and is an essential additive in the plastic industry, wherein the proportion of phthalate and terephthalate accounts for more than 90%, but researches show that the phthalate plasticizer has potential carcinogenicity, and the green plasticizers such as epoxy grease, citrate and the like are difficult to meet huge market demands in a short time on yield, so the p-phthalate plasticizer is also a main product in the market in the future.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides continuous production equipment and a continuous production process for a DOTP plasticizer, which have the advantages of saving energy consumption, increasing yield and the like and solve the problems of complex operation and high energy consumption.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a continuous production device of DOTP plasticizer and a process thereof comprise a slurry mixing kettle, wherein the upper surface of the slurry mixing kettle is provided with an installation pipe, the number of the mounting tubes is two, the upper surface of the mounting tube is movably connected with a solid bottle, the upper surface of the other mounting tube is movably connected with a liquid bottle, the inside of the slurry mixing kettle is provided with a screw pump, the lower surface of the slurry mixing kettle is movably connected with a feeding intermediate tank through a pipeline A, the outer surface of the pipeline A is movably connected with an alcohol flushing bottle through a sewer pipe, the lower surface of the feeding intermediate tank is movably connected with a first esterification kettle through a pipeline B, the outer surface of the first esterification kettle is movably connected with a second esterification kettle, the first esterification kettle is connected with the second esterification kettle through an overflow pipeline, and the bottom of the second esterification kettle is movably connected with an esterification qualified buffer tank.

Preferably, the outer surface of the liquid bottle is provided with scale marks.

Preferably, the length of the line B is smaller than the length of the line a.

Preferably, a liquid level meter is arranged inside the first esterification kettle.

Preferably, the outer surface of the overflow line is provided with a regulating valve.

Preferably, the slurry mixing kettle and the feeding intermediate tank are movably connected through a support frame.

Preferably, an inlet pipeline is additionally arranged at the bottom of the feeding intermediate tank, the pipeline is as short as possible, a screw metering pump is additionally arranged for preventing anhydride from being blocked and feeding the mixture into the first esterification kettle, an electromagnetic valve at the bottom of the feeding intermediate tank, a nitrogen back flushing flow and a liquid level meter are additionally arranged, and the first esterification kettle mass flow meter is convenient for metering flow.

Preferably, when the first esterification kettle needs to reach the esterification rate%, the overflow flows into the second esterification kettle to continue esterification until the reaction is qualified, an overflow pipeline and a liquid level meter need to be added, the first esterification kettle needs to be pressurized, an original second esterification kettle emptying regulating valve is disassembled and assembled to the first esterification kettle emptying pipeline through transformation, a first esterification kettle alcohol-water separation tank interface is additionally added, a regulating valve is added, the esterification emptying interface is convenient, the regulating valve between the first esterification kettle and the second esterification kettle is added, and the overflow pipeline feeding or the regulating valve is opened to realize the feeding of the first esterification kettle and the feeding of the second esterification kettle.

Preferably, the esterification of the second esterification kettle is qualified, and then the esterification kettle enters an esterification qualified buffer tank, and a second esterification kettle-esterification qualified buffer tank flow is added, so that the improvement result is as follows: the DOTP production realizes the full-continuous production of the device, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield.

Preferably, the slurry mixing kettle is used as a slurry mixing kettle, solid PT and quantitative octanol enter the slurry mixing kettle to be uniformly mixed, a flow of feeding the feeding intermediate tank from the bottom of the slurry mixing kettle needs to be added, a screw pump needs to be added, a flow of feeding the feeding intermediate tank and a compressed air blowing line are added, and in order to ensure that a pipeline of the slurry mixing kettle and the feeding intermediate tank does not block the pipeline after slurry is pumped, an alcohol flushing bottle is added to flush the slurry mixing kettle and the feeding intermediate tank.

(III) advantageous effects

Compared with the prior art, the invention provides continuous production equipment and a continuous production process for the DOTP plasticizer, and the continuous production equipment and the continuous production process have the following beneficial effects:

this DOTP plasticizer serialization production facility and technology, through thick liquids mixing kettle, the feeding intermediate tank, the second esterification cauldron, overflow line, governing valve and the mutually supporting between the qualified buffer tank of esterifying, through having set up the governing valve between first esterification cauldron and the second esterification cauldron, can realize overflow line feeding or open the governing valve and realize the two feedstock channel of first esterification cauldron and second esterification cauldron feeding, the qualified buffer tank of esterifying gets into after the diester cauldron is qualified, increase the qualified buffer tank flow of second esterification cauldron-esterifying, the achievement is reformed transform: the DOTP production realizes the full-continuous production of the device, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield.

Drawings

FIG. 1 is a schematic view of a continuous DOTP plasticizer production facility and a process structure thereof according to the present invention;

FIG. 2 is a schematic view of a continuous DOTP plasticizer production facility and a process structure flow thereof according to the present invention.

In the figure: r1, mounting tube; r2, solid bottle; r3, liquid bottle; r3601, a first esterification kettle; r3603, a feeding intermediate tank; b3605, a buffer tank; r4, scale lines; r5, screw pump; r6, line a; r601 and a second esterification kettle; R601A, slurry mixing kettle; r7, sewer pipe; r8, line B; r9, level gauge; r10, overflow line; r11 regulator valve; r12, scaffold; b602, washing the bottle with alcohol.

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. 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.

Referring to fig. 1-2, a continuous production apparatus and process for DOTP plasticizer, comprising a slurry mixing tank R601A, two installation pipes R1 are provided on the upper surface of a slurry mixing tank R601A, the number of the installation pipes R1 is two, the upper surface of an installation pipe R1 is movably connected with a solid bottle R2, the upper surface of another installation pipe R1 is movably connected with a liquid bottle R3, a screw pump R5 is provided inside the slurry mixing tank R601A, the lower surface of the slurry mixing tank R601A is movably connected with a feeding intermediate tank R3603 through a pipeline AR6, the outer surface of the pipeline AR6 is movably connected with an alcohol flushing bottle B602 through a sewer pipe R7, the lower surface of the feeding intermediate tank R3603 is movably connected with a first esterification tank R3601 through a pipeline BR8, the outer surface of the first esterification tank R601 is movably connected with a second esterification tank R601, the first esterification tank R1 is connected with a second esterification tank R601 through an overflow pipeline R10, the bottom of the second esterification tank R3605 is movably connected with a qualified esterification tank R601, the outer surface of the liquid bottle R3 is provided with a scale mark R4, the length of a pipeline BR8 is smaller than that of a pipeline AR6, a liquid level meter R9 is arranged inside the first esterification kettle R3601, the outer surface of an overflow pipeline R10 is provided with an adjusting valve R11, and the slurry mixing kettle R601A and the feeding intermediate tank R3603 are movably connected through a support frame R12;

an inlet pipeline BR8 is additionally arranged at the bottom of the feeding intermediate tank R3603, the pipeline BR8 is as short as possible, a screw metering pump is additionally arranged for preventing anhydride blockage to enter the first esterification kettle R3601, an electromagnetic valve at the bottom of the feeding intermediate tank R3603, a nitrogen back-flushing flow and a liquid level meter R9 are additionally arranged, and a mass flow meter of the first esterification kettle R3601 is convenient for metering flow;

when the first esterification kettle R3601 has to reach the esterification rate of 97 percent, the first esterification kettle R3601 overflows into the second esterification kettle R601 to continue esterification until the reaction is qualified, an overflow pipeline R10 and a liquid level meter R9 are needed to be added, the first esterification kettle R3601 needs to be pressurized, an original second esterification kettle R601 emptying regulating valve is disassembled and assembled to a first esterification kettle R3601 emptying line through modification, in addition, a first esterification kettle R3601 alcohol-water separation tank interface and a regulating valve are arranged to facilitate the esterification emptying interface, and the overflow pipeline R10 can be used for feeding or the regulating valve R11 is opened to realize double feeding channels of the feeding of the first esterification kettle R3601 and the second esterification kettle R601 through the regulating valve R11 arranged between the first esterification kettle R3601 and the second esterification kettle R601;

and after the esterification of the second esterification kettle R601 is qualified, the second esterification kettle R601 enters an esterification qualified buffer tank B3605, the flow of the second esterification kettle R601-the esterification qualified buffer tank B3605 is added, and the improvement result is as follows: the DOTP production implementation device realizes full-continuous production, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield, the slurry mixing kettle R601A is used as a slurry mixing kettle, solid PTA and quantitative octanol enter the kettle to be uniformly mixed, a flow of feeding the intermediate tank R3603 from the bottom of the slurry mixing kettle R601A needs to be added, one screw pump needs to be added, a feeding intermediate tank R3603 flow and a compressed air blowing line are added, in order to ensure that a pipeline of the slurry mixing kettle R601A-feeding intermediate tank R3603 is not blocked after slurry is pumped, an alcohol flushing bottle B602 is added to flush the slurry mixing kettle R601A-feeding intermediate tank R3603 flow.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

In summary, when the continuous production equipment and the process for the DOTP plasticizer are used, the continuous production equipment and the process for the DOTP plasticizer are characterized in that a slurry mixing kettle R601A, a feeding intermediate tank R3603, a second esterification kettle R601, an overflow line R10, an adjusting valve R11 and an esterification qualified buffer tank B3605 are matched with each other, the adjusting valve R11 between a first esterification kettle R3601 and a second esterification kettle R601 is arranged, feeding of the overflow line R10 can be realized, or the adjusting valve R11 is opened to realize double feeding channels for feeding the first esterification kettle R3601 and the second esterification kettle R601, the esterification kettle R601 enters the esterification qualified buffer tank B3605 after esterification is qualified, the flow of the second esterification kettle R601-esterification qualified buffer tank B3605 is added, and the improvement results are as follows: the DOTP production realizes the full-continuous production of the device, reduces the energy consumption of unit products by more than 20 percent, shortens the production time by more than 10 percent, saves the energy consumption and increases the yield.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.