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Production method and application of terephthalic metal slat whisker

A technology of terephthalic acid and crude terephthalic acid, which is applied in crystal growth, single crystal growth, single crystal growth, etc., can solve the problems of low purity of terephthalic acid and limitations in application fields, and achieve environmental benefits and economic benefits Taking into account both benefits, solving high processing costs, and improving processing efficiency

Active Publication Date: 2013-06-26
常州市五洲环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the purity of terephthalic acid extracted by the existing alkali reduction wastewater treatment method is low, and the application field is limited

Method used

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  • Production method and application of terephthalic metal slat whisker
  • Production method and application of terephthalic metal slat whisker
  • Production method and application of terephthalic metal slat whisker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Adjust the pH value of the wastewater to 11, add 20% basic aluminum chloride, and then the wastewater first undergoes rapid stirring at 500 rpm for 6 minutes, and then slow stirring at 100 rpm for 6 minutes to obtain flocs The waste water was filtered by waste coal slag to filter the sediment, and then 30% activated carbon was added to the waste water. After adsorption for 10 minutes, the activated carbon was filtered through a layer of waste coal slag, and the waste water was stirred at 150 rpm for 6 minutes. Dilute sulfuric acid, wait for the pH value of the wastewater to drop to 3, and age in the aging tank for 5 hours to obtain crude terephthalic acid. After testing, the purity of terephthalic acid reached 95%.

[0023] Add the crude terephthalic acid obtained in Example 1 to the caustic soda solution to dissolve again, adjust the pH value at 8, add polyethylene glycol nonionic surfactant, stir and mix, then add the soluble metal salt CaCl2, stir, and age for 5h , ...

Embodiment 2

[0025] Adjust the pH value of the wastewater to 10, add 5% basic aluminum chloride, and then the wastewater first undergoes rapid stirring at 350 rpm for 10 minutes, and then slow stirring at 120 rpm for 5 minutes to obtain flocs The waste water is filtered by waste coal slag to filter the sediment, and then 10% activated carbon is added to the waste water. After 5 days of adsorption, the activated carbon is filtered through a layer of waste coal slag, and the waste water is stirred at 80 rpm for 10 minutes. Hydrochloric acid, after the pH value of the wastewater drops to 3, it is aged in the aging tank for 1, and the purity of the obtained crude terephthalic acid can reach 95%.

[0026] Add the obtained crude terephthalic acid into caustic soda solution to dissolve again, adjust the pH value at 6, add polyoxyethylene type nonionic surfactant, stir and mix, then add soluble metal salt MgCl2, stir, and age for 1 Magnesium terephthalate whiskers are obtained.

Embodiment 3

[0028] Adjust the pH value of the wastewater to 10, add 13% basic aluminum chloride, and then the wastewater first undergoes rapid stirring at 550 rpm for 5 minutes, and then slow stirring at 80 rpm for 10 minutes to obtain flocs The waste water was filtered through the waste coal slag to filter the sediment, and then 20% activated carbon was added to the waste water. After 8 minutes of adsorption, the activated carbon was filtered through a layer of waste coal slag, and the waste water was stirred at 130 rpm for 5 minutes. Hydrochloric acid, after the pH value of the wastewater drops to 3, it is aged in the aging tank for 3 hours, and the purity of the obtained crude terephthalic acid can reach 95%.

[0029] Add the obtained crude terephthalic acid to caustic soda solution to dissolve again, adjust the pH value at 7, add polyoxyethylene type or polyol type nonionic surfactant, stir and mix, then add soluble metal salt ZnCl2, stir, and age After 3h, zinc terephthalate whiskers...

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Abstract

The invention relates to a production method and application of a terephthalic metal slat whisker. The production method disclosed by the invention comprises the steps of: recycling crude terephthalic acid of which the purity is not smaller than 95% by an alkali peeling waste water treatment process; adding and dissolving crude terephthalic acid in a caustic soda solution as a raw material; adding a surface active agent after regulating the pH value; stirring the mixed solution uniformly, then adding a dissolvable calcium salt, stirring and ageing, thereby obtaining the terephthalic metal slat whisker. The terephthalic metal slat whisker can be used as an active filler of rubber, and the addition of the whisker can greatly improve the mechanical properties of a rubber plastic material.

Description

[0001] The present invention is an invention with the application number 2012100089196, the application date is January 12, 2012, and the title is "Recovery Method of Terephthalic Acid in Alkali Reduction Wastewater and Production Method and Application of Terephthalic Acid Metal Salt Whiskers" Divisional applications for patents. technical field [0002] The invention relates to the field of production and application of metal salt whiskers, in particular to a production method and application of terephthalate metal salt whiskers. Background technique [0003] Whisker refers to a kind of fiber grown in the form of high-purity single crystal under artificial control conditions, so it has excellent mechanical properties. Due to its highly ordered atomic structure and complete structure, it is difficult to accommodate the long-standing defects in large crystals, so the mechanical strength is approximately equal to the theoretical strength of the valence bond force between atom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B7/14C30B29/54C30B29/62C02F9/04C08K7/02C08L23/06
Inventor 丁玉兰方春平
Owner 常州市五洲环保科技有限公司
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