Method for removing residual catalyst in bisphenol A reaction liquid

A technology of reaction solution and catalyst, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as removal, and achieve the effect of simple regeneration operation, simple process flow and low cost

Inactive Publication Date: 2013-06-19
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem of removing the residual catalyst in the bisphenol A reaction solution and improve the quality of bisphenol A, a method for removing the residual catalyst in the bisphenol A reaction solution is provided

Method used

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  • Method for removing residual catalyst in bisphenol A reaction liquid
  • Method for removing residual catalyst in bisphenol A reaction liquid
  • Method for removing residual catalyst in bisphenol A reaction liquid

Examples

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Embodiment 1

[0013] Example 1: The bisphenol A reaction solution is added to the adsorber device filled with fiber mold coalescing material, the temperature is controlled at 75°C, normal pressure, and the volume space velocity is 25m 3 / h, this device can continuously process the amount of bisphenol A reaction solution that is 35 times the volume of the packing, when the processed bisphenol A does not meet the acidity requirements, the packing of the device needs to be regenerated, and the packing of the device is washed with hot acetone (the amount is the processed The amount of bisphenol A reaction solution is 2 / 3, of which fresh acetone and recovered acetone account for 50% respectively), and the volume space velocity of acetone is 80m 3 / h, the regeneration temperature is 55°C, and the regenerated device packing can return to the original processing capacity.

Embodiment 2

[0014] Example 2: The bisphenol A reaction liquid is added to the adsorber device filled with fiber mold coalescing material, the temperature is controlled at 75°C, normal pressure, and the volume space velocity is 25 m 3 / h, this device can continuously process the amount of bisphenol A reaction solution that is 35 times the volume of the packing, when the processed bisphenol A does not meet the acidity requirements, the packing of the device needs to be regenerated, and the packing of the device is washed with hot acetone (the amount is the processed The amount of bisphenol A reaction solution is 1 / 3, wherein the ratio of fresh acetone to recovered acetone is 3:7), and the volumetric space velocity of acetone is 85 m 3 / h, the regeneration temperature is 50°C, and the regenerated device packing can recover to the original processing capacity.

Embodiment 3

[0015] Example 3: Add the bisphenol A reaction liquid to the adsorption device filled with fiber mold coalescing material, the temperature is controlled at 75°C, normal pressure, and the volume space velocity is 25 m 3 / h, this device can continuously process the amount of bisphenol A reaction solution that is 35 times the volume of the packing, when the processed bisphenol A does not meet the acidity requirements, the packing of the device needs to be regenerated, and the packing of the device is washed with hot acetone (the amount is the processed The amount of bisphenol A reaction solution is 1 / 3, wherein the ratio of fresh acetone to recovered acetone is 1:1), and the volumetric space velocity of acetone is 90 m 3 / h, the regeneration temperature is 45°C, and the regenerated device packing can recover to the original processing capacity.

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Abstract

The invention relates to a method for removing residual catalyst in bisphenol A reaction liquid from the production of the chemical material. The method is capable of removing the residual acid catalyst in the bisphenol A reaction liquid and improving the quality of the bisphenol A. The technical scheme comprises the following steps of: inputting the bisphenol A reaction liquid or acid-removing assistant of the bisphenol A reaction liquid into a mixer through an inputting pipe; and then inputting the liquid into an adsorber, wherein the adsorber is a tube-type device and the tube-type device is filled with the fiber film coalescence material; inputting hot water into a shell layer of the tube, wherein the acidity of the bisphenol A reaction liquid is smaller than or equal to 0.001 mmol / L and meets the requirement after the liquid is adsorbed by the adsorber; then directly outputting the bisphenol A reaction liquid through an outputting pipe; inputting acetone solvent into the adsorberto wash the fiber film coalescence material when the acidity is more than 0.001 mmol / L; inputting the washed acetone into a solvent pot to be recycled or be recycled after the acetone is distilled. The method provided by the invention has the advantages of low investment and simple process flow; the method does not lead in other impurities and does not change the performance of the bisphenol A; the temperature for deacidifying is low, the solvent can be recycled and the method can be used for producing the bisphenol A.

Description

technical field [0001] The invention relates to a method for removing residual catalyst in bisphenol A reaction liquid in the production of chemical raw materials. technical background [0002] Bisphenol A is an important chemical raw material. It is not only a monomer for the manufacture of epoxy resin, polycarbonate, and polysulfone, but also one of the widely used raw materials in the organic synthesis industry. Its quality directly affects the quality of the resin. Performance, therefore, the purification of BPA is an important issue in industry. During the reaction synthesis process of bisphenol A by ion method, the resin catalyst will release free acid, which will cause corrosion damage to equipment and instruments, and due to the existence of free acid, bisphenol A will be decomposed in the high temperature unit thin film evaporation refining process, resulting in high Molecular heavy components affect the color and purity of bisphenol A, and increase the amount of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C39/16C07C37/82
CPCY02P20/50
Inventor 唐晓东王燕郑存川张华龙李晓贞许玮玮杨凯
Owner SOUTHWEST PETROLEUM UNIV
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