CN211159738U

CN211159738U - Reaction unit with falling film devolatilization function

Info

Publication number: CN211159738U
Application number: CN201921753043.1U
Authority: CN
Inventors: 朱功贤; 沙海东; 蘧建星
Original assignee: Jiangsu Keqi Polymer Materials Research Institute Co ltd
Current assignee: Jiangsu Keqi Polymer Materials Research Institute Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-08-04
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a reaction unit with falling liquid film devolatilization function, including reation kettle, there is the knockout pump reation kettle bottom through the pipe connection, and reation kettle's opposite side is kept away from to the knockout pump is equipped with the filter, and the opposite side that the knockout pump was kept away from to the filter passes through the pipeline to be connected with falling liquid film devolatilization ware, is equipped with online viscometer and heat exchanger on the connecting tube between filter and the falling liquid film devolatilization ware respectively, and falling liquid film devolatilization ware one side is equipped with the falling film evaporator, and the falling film evaporator is connected with the devolatilization ware. The utility model has the advantages that: by adopting a thin-layer molecular distillation principle, a porous falling film devolatilization device is added on a traditional distillation kettle, so that the evaporation devolatilization area of the silicone oil material in the reaction kettle is greatly increased, the cost input is reduced, the occupied area of newly added equipment is reduced, the production operation is simple and convenient, and the product can reach the required volatile index.

Description

Reaction unit with falling film devolatilization function

Technical Field

The utility model relates to a take off and wave reaction technical field, specifically be a reaction unit with falling liquid film takes off and waves function.

Background

In the prior art, with the gradual improvement of the technical standard of the silicone oil industry, particularly, the European Union lists D3-D6 as highly concerned substances, and the content of D3-D6 is in direct proportion to the volatile components of the silicone oil, namely, the lower the volatile components, the lower the ring body content of the silicone oil is, even the volatile components are lower to a certain value, the ring body can not be detected, and thus, the control of the volatile components of the silicone oil by a manufacturer for producing the silicone oil is required to be lower.

In the prior art, the low volatile matter can be achieved by the following points: 1. the low temperature of the material is increased; 2. a vacuum unit is added to improve the vacuum degree; 3. the low removing time is prolonged; 4. adding special lowering equipment, such as a molecular still. These methods can reduce the volatile content of the material, but they have the corresponding disadvantages or shortcomings, such as large capital investment, high energy consumption and low efficiency, especially the second and fourth aspects, especially the first aspect, high equipment cost, low energy production, large space occupation and low space-time efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reaction unit with falling liquid film devolatilization function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a reaction unit with falling liquid film devolatilization function, includes reation kettle, there is the pump of beating material reation kettle bottom through the pipe connection, the pump of beating is kept away from reation kettle's opposite side is equipped with the filter, the filter is kept away from the opposite side of pump of beating passes through the pipeline and is connected with online viscometry appearance, online viscometry appearance is kept away from the opposite side of filter passes through the pipeline and is connected with heat exchanger, the other end that online viscometry appearance was kept away from to heat exchanger is connected with falling liquid film devolatilization ware, two parts are porous distribution divertor and falling film evaporator and pass through series connection respectively about the falling liquid film devolatilization ware, porous distribution divertor upper portion reaches falling film evaporator passes through the pipeline and is parallelly connected with the condenser, condenser upper portion pass through the pipeline with falling film evaporator's upper portion is established ties, the condenser lower part passes through, and the upper part of the buffer tank is connected with a vacuum pumping system.

Preferably, a stirring paddle connected with a rotating motor is arranged in the reaction kettle, and the rotating motor is arranged above the reaction kettle.

Preferably, the reaction kettle, the material beating pump, the filter, the falling film devolatilizer, the online viscosity meter, the heat exchanger, the condenser and the buffer tank are all connected through pipelines, and the connecting pipelines are vacuum and large-diameter pipelines.

Preferably, a flowmeter is further arranged in the online viscometer.

Preferably, the falling film devolatilizer is formed by connecting a porous distribution fluid director and a falling film evaporator in series, and the lower part of the falling film devolatilizer is directly connected with a feed inlet at the upper part of the reaction kettle.

Preferably, the upper part of the condenser is connected with the upper part of the falling-film evaporator, the lower part of the condenser is connected with the upper part of the buffer tank, and the upper part of the buffer tank is connected with a vacuum suction system.

Advantageous effects

A knockout pump is added at the bottom of a reaction kettle, the material is circulated externally and pumped into the top of a porous falling film devolatilizer from the bottom of the reaction kettle, the silicone oil material is guided into a falling film evaporator through a porous distributor, the silicone oil is repeatedly subjected to surface updating in the devolatilizer, and falling film flash evaporation with large specific surface, short time, high heat and high vacuum is carried out, so that silicone oil products with high quality and extremely low volatile matters (D3-D6 residue is less than 1000ppm) are finally obtained, the cost input is reduced, the floor area of newly added equipment is reduced, the production operation is simple and convenient, and the required volatile matter index can be reached.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Reference numerals

The method comprises the following steps of 1-a reaction kettle, 2-a material-beating pump, 3-a filter, 4-an online viscometer, 5-a heat exchanger, 6-a falling film devolatilizer, 7-a condenser and 8-a buffer tank.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Examples

As shown in figure 1, a reaction device with falling film devolatilization function comprises a reaction kettle 1, the bottom of the reaction kettle 1 is connected with a material beating pump 2 through a pipeline, the other side of the material beating pump 2 far away from the reaction kettle 1 is provided with a filter 3, the other side of the filter 3 far away from the material beating pump 2 is connected with an online viscometer 4 through a pipeline, the other side of the online viscometer 4 far away from the filter 3 is connected with a heat exchanger 5 through a pipeline, the other end of the heat exchanger 5 far away from the online viscometer 4 is connected with a falling film devolatilization device 6, the upper part and the lower part of the falling film devolatilization device 6 are respectively a porous distribution fluid director and a falling film evaporator and are connected in series, the upper part of the porous distribution fluid director and the falling film evaporator are connected in parallel through a pipeline and the condenser 7 is connected in series through a pipeline, the lower part, the upper part of the buffer tank 8 is connected with a vacuum-pumping system.

Preferably, a stirring paddle connected with a rotating motor is arranged in the reaction kettle 1, and the rotating motor is arranged above the reaction kettle 1.

Preferably, the reaction kettle 1, the material beating pump 2, the filter 3, the falling film devolatilizer 6, the online viscosity meter 4, the heat exchanger 5, the condenser 7 and the buffer tank 8 are all connected through pipelines, and the connecting pipelines are vacuum and large-diameter pipelines.

Preferably, a flow meter is also arranged in the in-line viscometer 4.

Preferably, the falling film devolatilizer 6 is formed by connecting a porous distribution fluid director and a falling film evaporator in series, and the lower part of the falling film devolatilizer 6 is directly connected with a feed inlet at the upper part of the reaction kettle 1.

Preferably, the upper part of the condenser 7 is connected with the upper part of the falling film evaporator, the lower part of the condenser 7 is connected with the upper part of the buffer tank 8, and the upper part of the buffer tank 8 is connected with a vacuum suction system.

The equipment pumps the material to the top of the porous falling film devolatilizer from the bottom of the reaction kettle in an external circulation manner through a knockout pump additionally arranged at the bottom of the reaction kettle, the silicone oil material is guided into the falling film evaporator through a porous distributor, the silicone oil is repeatedly subjected to surface updating in the devolatilizer and is subjected to falling film flash evaporation with large specific surface area, short time, high heat and high vacuum, and finally the silicone oil product with high quality and extremely low volatile matter is obtained (the residue of D3-D6 is less than 1000 ppm).

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. A reaction unit with falling film devolatilization function, includes reation kettle (1), its characterized in that: the bottom of the reaction kettle (1) is connected with a material stirring pump (2) through a pipeline, the material stirring pump (2) is far away from the other side of the reaction kettle (1) and is provided with a filter (3), the filter (3) is far away from the other side of the material stirring pump (2) is connected with an online viscometer (4) through a pipeline, the online viscometer (4) is far away from the other side of the filter (3) and is connected with a heat exchanger (5) through a pipeline, the other end of the heat exchanger (5) far away from the online viscometer (4) is connected with a falling film devolatilizer (6), the upper part and the lower part of the falling film devolatilizer (6) are respectively a porous distribution fluid director and a falling film evaporator and are connected in series, the upper part of the porous distribution fluid director and the falling film evaporator are connected in parallel with a condenser (7) through pipelines, the upper part of the condenser (7) is, the lower part of the condenser (7) is connected with the upper part of the buffer tank (8) through a pipeline, and the upper part of the buffer tank (8) is connected with a vacuum-pumping system.

2. The reaction device with falling film devolatilization function as set forth in claim 1, wherein: the stirring paddle connected with the rotating motor is arranged in the reaction kettle (1), and the rotating motor is arranged above the reaction kettle (1).

3. The reaction device with falling film devolatilization function as set forth in claim 1, wherein: the reaction kettle (1), the knockout pump (2), the filter (3), the falling film devolatilization device (6), the online viscosity instrument (4), the heat exchanger (5), the condenser (7) and the buffer tank (8) are all connected through pipelines, and the connecting pipelines are vacuum and large-diameter pipelines.

4. The reaction device with falling film devolatilization function as set forth in claim 1, wherein: and a flowmeter is also arranged in the on-line viscometer (4).

5. The reaction device with falling film devolatilization function as set forth in claim 1, wherein: the falling film devolatilization device (6) is formed by connecting a porous distribution fluid director and a falling film evaporator in series, and the lower part of the falling film devolatilization device (6) is directly connected with a feed inlet at the upper part of the reaction kettle (1).

6. The reaction device with falling film devolatilization function as set forth in claim 1, wherein: the upper part of the condenser (7) is connected with the upper part of the falling film evaporator, the lower part of the condenser (7) is connected with the upper part of the buffer tank (8), and the upper part of the buffer tank (8) is connected with a vacuum suction system.