Coagulation method of ABS grafted latex for improving biodegradability of process sewage

An agglomeration method and biochemical technology, applied in the coagulation field of ABS grafted latex, can solve the problems of high efficiency/economy of the treatment process, rising cost per ton of sewage treatment, etc., to reduce the content of toxic cyano substances and improve biochemical properties the effect of narrow particle size distribution

Active Publication Date: 2021-09-21
WANHUA CHEM (SICHUAN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is worth pointing out that with the complexity of the treatment process, the cost per ton of sewage treatment

Method used

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  • Coagulation method of ABS grafted latex for improving biodegradability of process sewage
  • Coagulation method of ABS grafted latex for improving biodegradability of process sewage
  • Coagulation method of ABS grafted latex for improving biodegradability of process sewage

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example 1

[0049] Take ABS graft latex (317 nm, solids 40.8%) 26kg, add 100 g of emulsion antioxidants (Zhejiang Shaofeng Plastic Industry SF-50LX), using IKA mechanical stirring mix evenly for use; 318 g of phthalate, potassium hydroxide, 159 g of sulfuric acid and the appropriate amount of deionized water (an addition amount of the target slurry) to adjust deionized water) are mixed, configured to be mixed to be used.

[0050] Nitrogen replacement for three roller continuous agglomeration reactors (see figure 1 In the process flow), the first cohesk is turned on, and the aforementioned consecutive mixed solution is continuously introduced into the kettle. After the liquid level is established, the first condensation kettle is controlled to 74 ° C, and the second condensate is 90 ° C, The three-coated kettle is 85 ° C, and the exit pump flow control each kettle is 1 h, and the rotational speed of each kettle is adjusted to control the velocity of each kettle line is 5m / ...

Example Embodiment

[0056] Example 2

[0057] Take ABS graft cleavage (317 nm, solids 40.8%) 26kg, add 100 g of emulsion antioxidants (Zhejiang Shaofeng Plastic Industry SF-50LX), using IKA mechanical stirring mix evenly for use; 106 g of amino acetic acid, 74 g of phosphoric acid and appropriate amount Deionized water (with the amount of the target slurry is attached to the amount of deionized water) is mixed, and the mixed solution is disposed to be used.

[0058] Nitrogen replacement for three roller continuous agglomeration reactors (see figure 1 In the process of process), the first cohesk is turned on, and the aforementioned mixed solution is continuously introduced into the kettle. After the liquid level is established, the first condensation kettle is controlled to 80 ° C, and the second condensate is 85 ° C, The three-coated kettle is 85 ° C, and the exit pump flow control each kettle is 1 h, and the rotational speed of each kettle is adjusted to control its leaf line speed in turn is 5m / ...

Example Embodiment

[0063] Example 3

[0064] Take ABS graft latex (317 nm, solids 40.8%) 26kg, add 100 g of emulsion antioxidants (Zhejiang Shaofeng plastic industry SF-50LX), using IKA mechanical stirring mix evenly; 53 g of hexamethylenedicaine, 318 g of hydrochloric acid and the appropriate amount of deionized water (an addition amount of the target slurry) to adjust the amount of deionized water) are mixed, configured to be mixed to be used.

[0065] Nitrogen replacement for three roller continuous agglomeration reactors (see figure 1 In the process flow), the first cohesk is turned on, and the aforementioned mixed solution is continuously introduced into the kettle. After the liquid level is established, the first condensate thermal temperature is 65 ° C, and the second condensate is 90 ° C, The three-condensed kettle is 85 ° C, while adjusting the flow of the outlet pump is 1 h, which is 1 h, adjusting each kettle, and the velocity of each kettle is equal to 5 m / s, 2m / s, 3 m / s, respecti...

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Abstract

The invention discloses a coagulation method of ABS grafted latex for improving biodegradability of process sewage. The method comprises the following steps: 1) adding ABS grafted latex, deionized water, a coagulant and a pH buffer agent into a coagulation kettle, and performing demulsifying and coagulating to obtain ABS grafted powder slurry; and 2) introducing the ABS grafted powder slurry into a curing kettle for further curing, and performing cooling, filtering and drying to obtain an ABS rubber powder. According to the method, the ABS grafted powder can be conveniently and efficiently prepared through continuous coagulation, meanwhile, control over the variety/content of specific pollutants can be achieved, generated process sewage has the higher B/C value, and the method is more suitable for an existing sewage treatment process of flocculation-air flotation slag scraping-biochemical treatment.

Description

technical field [0001] The invention relates to a coagulation method of ABS grafted latex, in particular to a coagulation method of ABS grafted latex which improves the biodegradability of process sewage, and belongs to the technical field of ABS resins. Background technique [0002] According to the synthesis route, ABS resin can be divided into two production processes: emulsion grafting-bulk SAN blending method and bulk method. Among them, the process flow of emulsion grafting-bulk SAN blending method is mainly composed of the following four parts: (1) PBL (polybutadiene latex) is prepared by emulsion polymerization; (2) Emulsion grafting of PBL with styrene and acrylonitrile (3) Styrene and acrylonitrile are copolymerized by bulk polymerization to obtain SAN resin; (4) ABS powder is blended with SAN resin and additives in a certain proportion, Through extrusion and granulation, ABS resin is finally obtained. Since the ABS grafted powder and SAN resin are produced separ...

Claims

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Application Information

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IPC IPC(8): C08C1/15
CPCC08C1/15
Inventor 孙一峰赵国威周兵韩强赵以兵于天勇黎源
Owner WANHUA CHEM (SICHUAN) CO LTD
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