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Method for preparing PVC resin filler by utilization of phosphogypsum

A PVC resin, phosphogypsum technology, applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., to achieve obvious economical practicability, reduced processing costs, and full color.

Inactive Publication Date: 2016-04-20
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the limitations of the existing phosphogypsum application, the purpose of the present invention is to provide a method for preparing PVC resin filler using phosphogypsum, so as to expand the application range of phosphogypsum

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The phosphogypsum is subjected to impurity removal treatment, and the weight percentage of impurities contained in the phosphogypsum is controlled to 4%. The phosphogypsum is reacted with excess sodium carbonate, filtered, washed, and dried to obtain calcium carbonate. Put the by-product potato residues, α-amylase, and soybean dregs obtained from the production of soymilk into a fermentation vessel at a mass ratio of 0.3:2:0.02:1, and add lactic acid bacteria to the fermentation vessel and mix well. , Anaerobic fermentation at 38°C for 40 hours, separation and purification to obtain lactic acid; the number of live lactic acid bacteria contains 4 million per gram of potato residue; in terms of mass fraction, the starch content of potato residue is 33%; by mass In terms of fractions, Okara contains 15% protein. Mix the obtained lactic acid and stearic acid at a molar ratio of 1:2 into a three-necked flask with a stirrer, add hardened oil as a catalyst, pass in helium gas,...

Embodiment 2

[0027] The phosphogypsum is subjected to impurity removal treatment, and the weight percentage of impurities contained in the phosphogypsum is controlled to 3%. The phosphogypsum is reacted with excess sodium carbonate, filtered, washed, and dried to obtain calcium carbonate. Put the calcium carbonate, the by-product potato residues, α-amylase, and bean dregs obtained from the production of tofu into a fermentation vessel at a mass ratio of 0.4:2.5:0.025:1.5, and add lactic acid bacteria to the fermentation vessel, and stir evenly. Anaerobic fermentation at 40°C for 32 hours, separation and purification to obtain lactic acid; the number of viable lactic acid bacteria is 4.5 million per gram of potato residue; the starch content of potato residue is 37% by mass fraction; In total, Okara contains 16% protein. Mix the obtained lactic acid and stearic acid at a molar ratio of 1:2.5 into a three-necked flask with a stirrer, add hardened oil as a catalyst, pass in helium gas, and qu...

Embodiment 3

[0029] The phosphogypsum is subjected to impurity removal treatment, and the weight percentage of impurities contained in the phosphogypsum is controlled to 2%. The phosphogypsum is reacted with excess sodium carbonate, filtered, washed, and dried to obtain calcium carbonate. Put the calcium carbonate, the by-product potato residues, α-amylase, and bean dregs obtained from the production of tofu into a fermentation vessel at a mass ratio of 0.5:3:0.03:2, and add lactic acid bacteria to the fermentation vessel, and stir evenly. Anaerobic fermentation at 45°C for 20 hours, separation and purification to produce lactic acid; the number of viable lactic acid bacteria is 5 million per gram of potato residue; the sugar content of potato residue and α-amylase is 40 %; in terms of mass fraction, bean dregs contain 22% protein. Mix the obtained lactic acid and stearic acid at a molar ratio of 1:3 into a three-necked flask with a stirrer, add hardened oil as a catalyst, pass in helium g...

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Abstract

The invention relates to a method for preparing a PVC resin filler by the utilization of phosphogypsum. The method is a method for preparing a PVC resin filler by using phosphogypsum as a raw material. According to the method for preparing the PVC resin filler by the utilization of phosphogypsum, impurity-removed phosphogypsum and sodium carbonate react to prepare calcium carbonate; the obtained calcium carbonate and potato residue, alpha-amylase and bean dregs undergo anaerobic fermentation under the action of lactic acid bacteria so as to prepare lactic acid; the obtained lactic acid and stearic acid undergo esterification reaction under the action of protective gas to generate stearyl lactyl acid; the generated stearyl lactyl acid and a mixture of sodium carbonate and calcium carbonate undergo neutralization reaction to prepare sodium stearyl lactate and calcium stearyl lactylate; and the mixture of sodium stearyl lactate and calcium stearyl lactylate is used as a filler to be used in production of the PVC resin.

Description

Technical field [0001] The invention relates to a method for preparing PVC resin filler by using phosphogypsum, and a method for preparing PVC resin filler by using phosphogypsum as a raw material. Background technique [0002] According to relevant statistics, at present, my country’s annual new phosphogypsum emissions are up to 50 million tons. A large amount of phosphogypsum piled up not only takes up land resources, adds a huge economic burden to enterprises, but also causes certain pollution to the environment, which will cause my country The construction of the national economy and the ecological environment have caused tremendous pressure. Therefore, speeding up the technological innovation of the comprehensive utilization of phosphogypsum and turning waste into treasure and turning harm into profit has become an important technical and economic policy in my country's economic construction, and it is also an urgent problem facing sustainable development. In accordance with...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/101C07C69/24C07C67/28
CPCC08K5/101C07C67/08C07C67/28C07C69/24C08K2201/014C12P7/42C08L27/06
Inventor 王伟杨步雷杨永彬向前勇李泽钢
Owner GUIZHOU KAILIN GRP CO LTD
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