Production system of glyceryl tripropionate

Abstract

The utility model relates to a production system of glyceryl tripropionate. The production system comprises an esterification assembly; a distillation assembly, the distillation assembly comprises a distillation kettle, a distillation kettle feed port formed in the top of the distillation kettle, a distillation kettle steam outlet formed in the top of the distillation kettle, a distillation kettle discharge port formed in the bottom of the distillation kettle, and an esterification material pipe connected with the esterification discharge port and the distillation kettle feed port; the second stirrer is arranged in the distillation kettle; the first material transfer pump is arranged on the esterification material pipe; a rectification assembly; and a post-processing assembly. The esterification assembly, the distillation assembly, the rectification assembly, the post-treatment assembly and other structures with specific structures are matched, so that the yield and purity of the glyceryl tripropionate can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical equipment relates to a production system of tripropionin. BACKGROUND

[0002] High-purity tripropionin is widely used in pharmaceutical excipients, food additives, high-end fragrances and spices, etc. Due to the special requirements of its application field, the product has very high requirements for impurities. In addition to the conventional main content and single impurity content, it also has more stringent requirements for moisture, acidity, color, and metal ion content.

[0003] The Chinese utility model patent with application number 202320971308.5 discloses a synthesis system of tripropionin, which includes a static mixer, a reaction assembly connected to the static mixer, and multiple groups of reaction flash evaporation modules connected in series. Each group of reaction flash evaporation modules includes a tubular reactor, a flash evaporator connected to the tubular reactor, and a first rectifying column connected to the flash evaporator. The tubular reactor is connected to the static mixer or the upper reaction flash evaporation module through a first feed pipe. The flash evaporator is connected to the tubular reactor through a second feed pipe, and the bottom of the flash evaporator is also connected to the lower reaction flash evaporation module through a first liquid phase discharge pipe. A second rectifying column is connected to the reaction assembly to receive the flash gas generated by the reaction assembly. This synthesis system can realize continuous online processing of reactants and obtain high-purity tripropionin products. However, the structure of this synthesis system is relatively simple, and the yield and purity of the product still have room for improvement. SUMMARY

[0004] The utility model aims at overcoming the deficiencies of the prior art and provides a production system of tripropionin.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a production system of tripropionin, which includes:

[0006] An esterification assembly, which includes an esterification kettle, a first esterification feed port arranged at the top of the esterification kettle, a second esterification feed port arranged at the top of the esterification kettle, a first stirrer installed in the esterification kettle, and an esterification discharge port arranged at the bottom of the esterification kettle;

[0007] a distillation assembly comprising a distillation kettle, a distillation kettle feed inlet disposed at the top of the distillation kettle, a distillation kettle vapor outlet disposed at the top of the distillation kettle, a distillation kettle discharge outlet disposed at the bottom of the distillation kettle, an esterified material pipe connecting the esterification discharge outlet and the distillation kettle feed inlet, a second agitator installed in the distillation kettle, and a first transfer pump installed on the esterified material pipe;

[0008] a distillation assembly comprising a distillation kettle, a distillation kettle feed inlet disposed at the top of the distillation kettle, a distillation kettle vapor outlet disposed at the top of the distillation kettle, a distillation kettle discharge outlet disposed at the bottom of the distillation kettle, an esterified material pipe connecting the esterification discharge outlet and the distillation kettle feed inlet, a second agitator installed in the distillation kettle, and a first transfer pump installed on the esterified material pipe;

[0009] a post-treatment assembly comprising a distillation column production pipe connected to the reflux tank and the distillation column reflux pump through a second three-way valve, a crude product storage tank connected to the distillation column production pipe, at least one set of decoloring kettle connected to the crude product storage tank, and a dehydration kettle connected to the decoloring kettle;

[0010] a product storage tank connected to the dehydration kettle through a second centrifuge.

[0011] optimally, the esterification assembly further comprises an esterification vapor outlet disposed at the top of the esterification kettle, an esterification reflux inlet disposed at the top of the esterification kettle, an esterification tube condenser in communication with the esterification vapor outlet, and an esterification water trap in communication with the esterification tube condenser and the esterification reflux inlet, respectively.

[0012] further, the distillation assembly further comprises a distillation kettle condenser in communication with the distillation kettle vapor outlet, a distillation kettle recovery pipe in communication with the bottom of the distillation kettle condenser, a first material recovery tank and a second material recovery tank connected to the distillation kettle recovery pipe through a first three-way valve, and a distillation kettle vent pipe in communication with the distillation kettle recovery pipe, the first material recovery tank and the second material recovery tank are further connected to the first esterification feed inlet and the second esterification feed inlet, respectively.

[0013] optimally, the distillation column comprises a distillation column base, a distillation column body installed on the distillation column base, and a plurality of layers of trays installed in the distillation column body, the distillation column body has a top and a bottom, the distillation material pipe is connected to the bottom of the distillation column body, and the overhead vapor pipe is connected to the top of the distillation column body.

[0014] Optimally, the decoloring kettle is two groups, each group of the decoloring kettle comprises a decoloring kettle body, at least one decoloring kettle feed port arranged at the top of the decoloring kettle body, a decoloring kettle discharge port arranged at the bottom of the decoloring kettle body and a third stirrer installed in the decoloring kettle body.

[0015] Further, one group of the decoloring kettle is connected with the crude product storage tank through a feed pump, and the other group of the decoloring kettle is connected with the decoloring kettle discharge port of one group of the decoloring kettle through a first centrifugal machine.

[0016] Further, the dewatering kettle comprises a dewatering kettle body, at least one dewatering kettle feed port arranged at the top of the dewatering kettle body to communicate with the decoloring kettle discharge port, a dewatering kettle discharge port arranged at the bottom of the dewatering kettle body and a fourth stirrer installed in the dewatering kettle body, and the second centrifugal machine is connected with the dewatering kettle discharge port.

[0017] Due to the above technical scheme, the production system of the present application has the following advantages compared with the prior art: the production system of the present application, by adopting the specific structure of the esterification assembly, the distillation assembly, the rectification assembly and the post-processing assembly, can effectively improve the yield and purity of the glyceryl tripropionate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial structure diagram of the production system of the glyceryl tripropionate of the present application;

[0019] Figure 2 is a partial structure diagram of the production system of the glyceryl tripropionate of the present application. DETAILED DESCRIPTION

[0020] The present application will be further described below in conjunction with the embodiments shown in the drawings.

[0021] As shown in Figure 1 and Figure 2 The production system of the glyceryl tripropionate mainly comprises the cooperating esterification assembly, distillation assembly, rectification assembly, post-processing assembly and product storage tank 44 and the like.

[0022] The esterification assembly comprises an esterification kettle 5, a first esterification feed inlet 1 arranged on the top of the esterification kettle 5, a second esterification feed inlet 2 arranged on the top of the esterification kettle 5, a first stirrer 51 installed in the esterification kettle 5, and an esterification discharge outlet 6 arranged on the bottom of the esterification kettle 5 (i.e. the top of the esterification kettle 5 is provided with the first esterification feed inlet 1 and the second esterification feed inlet 2, and the bottom of the esterification kettle 5 is provided with the esterification discharge outlet 6; the first stirrer 51 is installed in the esterification kettle 5 in the conventional manner, and is connected with a motor through a speed reducer; the same applies hereinafter). In this embodiment, the esterification assembly further comprises an esterification vapor outlet 3 arranged on the top of the esterification kettle 5, an esterification reflux inlet 4 arranged on the top of the esterification kettle 5, an esterification shell-and-tube condenser 7 connected with the esterification vapor outlet 3, and an esterification water separator 9 connected with the esterification shell-and-tube condenser 7 and the esterification reflux inlet 4 respectively; i.e. the top of the esterification kettle 5 is further provided with the esterification vapor outlet 3 and the esterification reflux inlet 4, the esterification shell-and-tube condenser 7 is connected with the esterification vapor outlet 3 through a pipeline, and the esterification water separator 9 is connected with the esterification shell-and-tube condenser 7 and the esterification reflux inlet 4 through a pipeline (conventional, the same applies hereinafter; i.e. the connection between components is usually realized through a pipeline); in this way, the esterification vapor can be recovered and utilized, thereby improving the utilization rate of raw materials and the yield of products.

[0023] The distillation assembly comprises a distillation kettle 46, a distillation kettle feed port 11 arranged at the top of the distillation kettle 46, a distillation kettle vapor outlet 12 arranged at the top of the distillation kettle 46, a distillation kettle discharge port 32 arranged at the bottom of the distillation kettle 46, an esterification material pipe 10 connecting the esterification discharge port 6 and the distillation kettle feed port 11, a second stirrer 14 installed in the distillation kettle 46, and a first material transfer pump 8 installed on the esterification material pipe 10. Specifically, the distillation kettle 46 has the distillation kettle feed port 11, the distillation kettle vapor outlet 12, and the distillation kettle discharge port 32, so that the product of the esterification kettle 5 is introduced into the distillation kettle 46 via the esterification material pipe 10 for distillation treatment. In this embodiment, the distillation assembly further comprises a distillation kettle condenser 21 connected to the distillation kettle vapor outlet 12, a distillation kettle recovery pipe 15 connected to the bottom of the distillation kettle condenser 21, a first material recovery tank 16 and a second material recovery tank 17 connected to the distillation kettle recovery pipe 15 through a first three-way valve (at this time, the first material recovery tank 16 and the second material recovery tank 17 are arranged in parallel, and the first material recovery tank 16 or the second material recovery tank 17 can be selected by adjusting the first three-way valve), and a distillation kettle vent pipe 13 connected to the distillation kettle recovery pipe 15 (the connection between the distillation kettle vent pipe 13 and the distillation kettle recovery pipe 15 is located between the distillation kettle condenser 21 and the first three-way valve). The first material recovery tank 16 and the second material recovery tank 17 are also connected to the first esterification feed port 1 and the second esterification feed port 2, respectively, so that the material recovered by the distillation kettle condenser 21 can be temporarily stored in the first material recovery tank 16 and the second material recovery tank 17, and then input into the esterification kettle 5 through the respective pipelines, further realizing the recovery and utilization of the distillation product, thereby improving the utilization rate of raw materials and being beneficial to improving the yield of the product. When the pressure of any part of the distillation kettle recovery pipe 15, the first material recovery tank 16, and the second material recovery tank 17 is too high, the pressure can be released through the distillation kettle vent pipe 13.

[0024] The rectification assembly comprises a rectification tower connected with the distillation material pipe 18 and the discharge port 32 of the distillation kettle, a second material transfer pump 181 installed on the distillation material pipe 18, a tower top vapor pipe 26 connected with the rectification tower, a reflux tank 24 connected with the tower top vapor pipe 26, a horizontal tube condenser 23 installed on the tower top vapor pipe 26 and located between the rectification tower and the reflux tank 24, a tower top reflux pipe 27 connected with the reflux tank 24 and the rectification tower, and a rectification tower reflux pump 25 installed on the tower top reflux pipe 27. Specifically, the rectification tower can be a conventional one, such as comprising a rectification tower base 19, a rectification tower body installed on the rectification tower base 19, and multiple layers of tower plates 20 installed in the rectification tower body, wherein the rectification tower body has a tower top and a tower bottom, the distillation material pipe 18 is connected with the tower bottom of the rectification tower body for conveying the kettle bottom liquid product of the distillation kettle 46 into the rectification tower body, and the tower top vapor pipe 26 is connected with the tower top of the rectification tower body for outputting the gaseous product at the tower top of the rectification tower; the gaseous product is condensed by the horizontal tube condenser 23 and stored in the reflux tank 24, and can be refluxed into the rectification tower by the rectification tower reflux pump 25 through the tower top reflux pipe 27, so as to improve the purity of the gaseous product at the tower top of the rectification tower.

[0025] The post-processing assembly includes a distillation column outlet pipe 28 connected between the reflux tank 24 and the distillation column reflux pump 25 via a second three-way valve; a crude product storage tank 29 connected to the distillation column outlet pipe 28; at least one set of decolorization kettles connected to the crude product storage tank 29; and a dehydration kettle connected to the decolorization kettle. Specifically, a second three-way valve is also installed on the top reflux pipe 27, positioning the second three-way valve between the reflux tank 24 and the distillation column reflux pump 25. This allows the product stored in the reflux tank 24 to be transported downstream to the crude product storage tank 29 via the distillation column outlet pipe 28. The decolorization kettles are divided into two groups and connected in series. One group of decolorization kettles includes a decolorization kettle body 33, a decolorization kettle feed port 30 and a decolorization kettle feed port 31 arranged at the top of the decolorization kettle body 33, a decolorization kettle discharge port 34 arranged at the bottom of the decolorization kettle body 33, and a third agitator installed in the decolorization kettle body 33; the other group of decolorization kettles includes a decolorization kettle body 33, a decolorization kettle feed port 35 and a decolorization kettle feed port 36 arranged at the top of the decolorization kettle body 33, a decolorization kettle discharge port 37 arranged at the bottom of the decolorization kettle body 33, and a third agitator installed in the decolorization kettle body 33. Such a group of decolorization kettles is connected in series by a feed pump 45 The decolorization kettle is connected to the crude product storage tank 29 (i.e., the decolorization kettle feed port 31 of the decolorization kettle is connected to the crude product storage tank 29 through a pipeline, and a feed pump 45 is installed on the pipeline). Another group of decolorization kettles is connected to the decolorization kettle discharge port 34 of the previous group of decolorization kettles through the first centrifuge 38 (achieved by a conventional pipeline). In this way, the product is decolorized by one group of decolorization kettles and then introduced into the first centrifuge 38 for centrifugal treatment. The filtrate is then introduced into the corresponding decolorization kettle body 33 through the decolorization kettle feed port 36 for decolorization again, and then discharged through the decolorization kettle discharge port 37, which is conducive to further improving the purity of the product. The dehydration kettle includes a dehydration kettle body 41, at least one dehydration kettle feed port 40 arranged at the top of the dehydration kettle body 41 to communicate with the decolorization kettle discharge port 37 (there are two dehydration kettle feed ports, namely the dehydration kettle feed port 40 and the dehydration kettle feed port 39, which are connected through a pipeline), a dehydration kettle discharge port 42 arranged at the bottom of the dehydration kettle body 41, and a fourth agitator installed in the dehydration kettle body 41. A second centrifuge 43 is connected to the dehydration kettle discharge port 42 for removing moisture from the product.

[0026] The product storage tank 44 is connected to the dehydration kettle via the second centrifuge 43 (also via conventional pipelines) and is used to store the final product after decolorization and dehydration.

[0027] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A production system for tripropionin, characterized in that: It includes: An esterification assembly, comprising an esterification kettle (5), a first esterification feed port (1) arranged at the top of the esterification kettle (5), a second esterification feed port (2) arranged at the top of the esterification kettle (5), a first agitator (51) installed in the esterification kettle (5), and an esterification discharge port (6) arranged at the bottom of the esterification kettle (5); A distillation assembly, comprising a distillation kettle (46), a distillation kettle feed port (11) disposed at the top of the distillation kettle (46), a distillation kettle steam outlet (12) disposed at the top of the distillation kettle (46), a distillation kettle discharge port (32) disposed at the bottom of the distillation kettle (46), an esterification material pipe (10) connecting the esterification discharge port (6) and the distillation kettle feed port (11), a second agitator (14) installed in the distillation kettle (46), and a first material transfer pump (8) installed on the esterification material pipe (10); A distillation assembly, the distillation assembly comprising a distillation tower connected to the distillation kettle discharge port (32) via a distillation material pipe (18), a second transfer pump (181) installed on the distillation material pipe (18), a tower top steam pipe (26) communicating with the distillation tower, a reflux tank (24) connected to the tower top steam pipe (26), a horizontal shell and tube condenser (23) installed on the tower top steam pipe (26) and located between the distillation tower and the reflux tank (24), a tower top reflux pipe (27) connecting the reflux tank (24) and the distillation tower, and a distillation tower reflux pump (25) installed on the tower top reflux pipe (27); A post-processing component, the post-processing component comprising a distillation tower extraction pipe (28) connected between the reflux tank (24) and the distillation tower reflux pump (25) via a second three-way valve, a crude product storage tank (29) connected to the distillation tower extraction pipe (28), at least one set of decolorization kettles connected to the crude product storage tank (29), and a dehydration kettle connected to the decolorization kettle; A product storage tank (44) is connected to the dehydration kettle via a second centrifuge (43).

2. The production system of tripropionin according to claim 1, characterized in that: The esterification assembly further comprises an esterification steam outlet (3) arranged at the top of the esterification kettle (5), an esterification reflux port (4) arranged at the top of the esterification kettle (5), an esterification tube condenser (7) connected to the esterification steam outlet (3), and an esterification water separator (9) respectively connected to the esterification tube condenser (7) and the esterification reflux port (4).

3. The production system of tripropionin according to claim 1 or 2, characterized in that: The distillation assembly further includes a distillation kettle condenser (21) connected to the distillation kettle steam outlet (12), a distillation kettle recovery pipe (15) connected to the bottom of the distillation kettle condenser (21), a first material recovery tank (16) and a second material recovery tank (17) connected to the distillation kettle recovery pipe (15) through a first three-way valve, and a distillation kettle vent pipe (13) connected to the distillation kettle recovery pipe (15), the first material recovery tank (16) and the second material recovery tank (17) are also connected to the first esterification feed port (1) and the second esterification feed port (2), respectively.

4. The production system of tripropionin according to claim 1, characterized in that: The distillation tower comprises a distillation tower base (19), a distillation tower body installed on the distillation tower base (19), and a multi-layer tower plate (20) installed in the distillation tower body. The distillation tower body has a tower top and a tower bottom. The distillation material pipe (18) is connected to the tower bottom of the distillation tower body, and the tower top steam pipe (26) is connected to the tower top of the distillation tower body.

5. The production system of tripropionin according to claim 1, characterized in that: The decolorization kettles are divided into two groups, and each group of the decolorization kettles includes a decolorization kettle body (33), at least one decolorization kettle feed port (30, 31, 35, 36) arranged at the top of the decolorization kettle body (33), a decolorization kettle discharge port (34, 37) arranged at the bottom of the decolorization kettle body (33), and a third agitator installed in the decolorization kettle body (33).

6. The production system of tripropionin according to claim 5, characterized in that: One group of decolorization kettles is connected to the crude product storage tank (29) via a feed pump (45), and another group of decolorization kettles is connected to the decolorization kettle discharge port (34) of one group of decolorization kettles via a first centrifuge (38).

7. The production system of tripropionin according to claim 6, characterized in that: The dehydration kettle comprises a dehydration kettle body (41), at least one dehydration kettle feed port (39, 40) arranged at the top of the dehydration kettle body (41) and connected to the decolorization kettle discharge port (34, 37), a dehydration kettle discharge port (42) arranged at the bottom of the dehydration kettle body (41), and a fourth agitator installed in the dehydration kettle body (41), and the second centrifuge (43) is connected to the dehydration kettle discharge port (42).

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