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Vacuum system applied to production of acrylic acid and acrylate

An acrylic and vacuum system technology, which is applied in the field of vacuum systems, can solve the problems of high production and operation costs, easy fluctuations in vacuum production, and instability, and achieve the effects of reducing operating costs, uniform suction, and stable and reliable work

Inactive Publication Date: 2019-11-01
谦信化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process mainly has the following problems: 1) The amount of steam used is relatively large, and the production and operation cost of the device is relatively high; 2) When the steam pressure is unstable, the vacuum is easy to fluctuate, resulting in unstable production; 3) The maintenance of the steam jet vacuum pump is troublesome, often It is easy to break, especially the nozzle needs to be disassembled regularly for inspection and maintenance

Method used

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  • Vacuum system applied to production of acrylic acid and acrylate
  • Vacuum system applied to production of acrylic acid and acrylate

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The invention discloses a vacuum system applied to the production of acrylic acid and acrylic esters. The vacuum system includes a tower top buffer tank, a tail gas condenser, a multi-stage Roots vacuum unit, a post-stage condenser, a gas-liquid separation tank and a water ring vacuum pump. ;The buffer tank on the top of the tower is connected with the top air inlet of the tail gas condenser, and the exhaust gas enters the tail gas condenser, and the side outlet of the lower part of the tail gas condenser is connected with the inlet end of the multi-stage Roots vacuum unit, and the multi-stage Roots vacuum unit The gas outlet is connected to the post-stage condenser, the post-stage condenser is connected to the gas-liquid separation tank inlet, and the gas-liquid separator gas outlet is connected to the water ring vacuum pump.

[0029] In this embodiment, the multi-stage Roots vacuum unit is composed of multiple Roots vacuum pumps connected in series, and an interstage c...

Embodiment 2

[0031] The invention discloses a vacuum system applied to the production of acrylic acid and acrylic esters. The vacuum system includes a tower top buffer tank, a tail gas condenser, a multi-stage Roots vacuum unit, a post-stage condenser, a gas-liquid separation tank and a water ring vacuum pump. ;The buffer tank on the top of the tower is connected with the top air inlet of the tail gas condenser, and the exhaust gas enters the tail gas condenser, and the side outlet of the lower part of the tail gas condenser is connected with the inlet end of the multi-stage Roots vacuum unit, and the multi-stage Roots vacuum unit The gas outlet is connected to the post-stage condenser, the post-stage condenser is connected to the gas-liquid separation tank inlet, and the gas-liquid separator gas outlet is connected to the water ring vacuum pump.

[0032] In this embodiment, the multi-stage Roots vacuum unit is composed of multiple Roots vacuum pumps connected in series, and an interstage c...

Embodiment 3

[0034] The invention discloses a vacuum system applied to the production of acrylic acid and acrylic esters. The vacuum system includes a tower top buffer tank, a tail gas condenser, a multi-stage Roots vacuum unit, a post-stage condenser, a gas-liquid separation tank and a water ring vacuum pump. ;The buffer tank on the top of the tower is connected with the top air inlet of the tail gas condenser, and the exhaust gas enters the tail gas condenser, and the side outlet of the lower part of the tail gas condenser is connected with the inlet end of the multi-stage Roots vacuum unit, and the multi-stage Roots vacuum unit The gas outlet is connected to the post-stage condenser, the post-stage condenser is connected to the gas-liquid separation tank inlet, and the gas-liquid separator gas outlet is connected to the water ring vacuum pump.

[0035] In this embodiment, the multi-stage Roots vacuum unit is composed of multiple Roots vacuum pumps connected in series, and an interstage c...

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Abstract

The invention discloses a vacuum system applied to production of acrylic acid and acrylate. The vacuum system comprises a tower top buffer tank, a tail gas condenser, a multi-stage Roots vacuum unit,a post-stage condenser, a gas-liquid separation tank and a water ring vacuum pump; the tower top buffer tank communicates with a gas inlet in the top of the tail-gas condenser to discharge tail gas into the tail-gas condenser, a gas out in the side of the lower part of the tail-gas condenser communicates with the gas inlet end of the multi-stage Roots vacuum unit, the gas outlet end of the multi-stage Roots vacuum unit communicates with the post-stage condenser, the post-stage condenser communicates with the gas inlet end of the gas-liquid separation tank, and the gas outlet end of the gas-liquid separator communicates with the water ring vacuum pump. The vacuum system applied to the production of the acrylic acid and the acrylate provided by the invention has the characteristics of high running stability, environmental protection, energy saving, and low maintenance costs.

Description

technical field [0001] The invention relates to the technical field of acrylic acid and acrylate preparation technology, in particular to a vacuum system applied to the production of acrylic acid and acrylates. Background technique [0002] Acrylic acid and acrylate series monomers are an important monomer for the synthesis of polymers in the modern chemical industry. It is a flammable, active and volatile liquid at room temperature. Because of its unsaturated double bond structure at the α and β positions and the presence of carbonyl in the molecule, it can be polymerized by emulsion, solution, etc. Polymerization methods and crosslinking methods yield thousands of stable polymers with unique characteristics. The carbon chain of the main chain and a variety of ester bonds provide the polymer with a variety of excellent properties, such as chemical stability, weather resistance, durability, hardness, flexibility, solubility and miscibility, etc., making acrylic and acrylic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00B01D45/08C07C51/44C07C57/07C07C67/54C07C69/54
CPCB01D45/08B01D53/002C07C51/44C07C67/54Y02P20/10
Inventor 冯佩洪李耀焜于冬娥佟刚
Owner 谦信化工集团有限公司
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