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High efficiency flacculant for carbon black containing heavy oil gasifying waste liquid and its prepn and application

A flocculant and carbon black technology, applied in chemical instruments and methods, separation methods, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of effluent SS not up to standard, unstable operation, high treatment cost, etc. The effect of reduction, low operating cost, and reduced engineering investment

Inactive Publication Date: 2009-11-11
郭国友
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can ensure that the effluent SS reaches the standard, and the cost per ton of water treatment is relatively low, but there is a fatal defect that the filter membrane is easily blocked. Therefore, various problems such as unstable operation often occur during operation.
In view of the defects of the combination of traditional filtration and membrane filtration, the current domestic petroleum industry prefers to use the oil injection process imported from Germany with extremely high treatment costs, that is, heavy oil or naphtha is sprayed into the wastewater The method of adsorbing carbon black particles, the process is simple to operate, but the treatment cost is extremely high, and the effluent SS cannot meet the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select the relative molecular mass at 3.0×10 7 ~8.0×10 7 Between 1000 parts of polyacrylamide monomer and 8914 parts of water, a monomer solution with a certain concentration was prepared, and 5 parts of EDTA-2Na, 1 part of ammonium persulfate, and 15 parts of phosphoric acid were added as initiators, and after filling with nitrogen and driving oxygen, React at a temperature of 10-40°C for 0.5-1.0h. When the reactant is viscous, add 15 parts of formaldehyde and 50 parts of acetaldehyde to the viscous liquid, and then add H 3 PO 4 25 parts, acid-catalyzed at 40-65°C for 6-8 hours, the rubber blocks were granulated, dried, and crushed to obtain a relative molecular mass of 3.2×10 7 ~8.1×10 7 The N-diphosphonoethyl-methacrylamide product (codenamed NPP).

[0032] Weigh 2.5 grams of NPP and 0.2 grams of PAS to make a 0.25% NPP solution, add 10ml to each liter of carbon black slurry; after adding NPP, stir rapidly for 2 to 5 minutes to fully mix NPP and wastewater, and ...

Embodiment 2

[0034] Select the relative molecular mass at 3.0×10 7 ~8.0×10 7 Between 750 parts of polyacrylamide monomer and 9127 parts of water, a monomer solution with a certain concentration was prepared, and 15 parts of EDTA-2Na, 3 parts of ammonium persulfate, and 25 parts of phosphoric acid were added as initiators, and after filling with nitrogen and driving oxygen, React at a temperature of 10-40°C for 0.5-1.0h. When the reactant is viscous, add 35 parts of formaldehyde and 35 parts of acetaldehyde to the viscous liquid, and then add H 3 PO 4 25 parts, acid-catalyzed at 40-65°C for 6-8 hours; the rubber block was granulated, dried, and crushed to obtain a relative molecular mass of 3.2×10 7 ~8.1×10 7 The N-diphosphonoethyl-methacrylamide product (codenamed NPP).

[0035] Weigh 2.5 grams of NPP and 0.2 grams of PAS, stir, and make a 0.25% NPP solution, add 20ml to each liter of carbon black slurry, first stir rapidly for 2-5 minutes, and then stir slowly for 3-5 minutes to make...

Embodiment 3

[0037] Select the relative molecular mass at 3.0×10 7 ~8.0×10 7 Between 500 parts of polyacrylamide monomer and 9355 parts of water, a monomer solution with a certain concentration was prepared, and 25 parts of EDTA-2Na, 5 parts of ammonium persulfate, and 40 parts of phosphoric acid were added as initiators, and after filling with nitrogen and driving oxygen, React at a temperature of 10-40°C for 0.5-1.0h. When the reactant is thick, add 50 parts of formaldehyde and 15 parts of acetaldehyde to the viscous liquid, and then add H 3 PO 4 10 parts, acid-catalyzed at 40-65°C for 6-8 hours; the rubber block was granulated, dried, and crushed to obtain a relative molecular mass of 3.2×10 7 ~8.1×10 7 The N-diphosphonoethyl-methacrylamide product (codenamed NPP).

[0038] Weigh 2.5 grams of NPP and 0.2 grams of PAS to make a 0.25% NPP solution, add 40ml to each liter of carbon black slurry, first stir rapidly for 2-5 minutes, then slowly stir for 3-5 minutes to make the flocs lar...

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PUM

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Abstract

A high-efficiency flocculant for heavy oil gasification carbon black waste liquid and its preparation method and application, which is characterized by the composition of the flocculant: polyacrylamide, EDTA-2Na, ammonium persulfate, phosphoric acid, formaldehyde, acetaldehyde and water. The method is to select polyacrylamide monomers, prepare monomer solutions, add EDTA-2Na, ammonium persulfate, phosphoric acid and other initiators, and react after filling nitrogen and driving oxygen. When the reactants are viscous, add formaldehyde to the viscous solution and acetaldehyde, and then add H3PO4 to catalyze, granulate, dry and pulverize the rubber block to obtain N-diphosphonoethyl-methacrylamide product. The invention can make the carbon black slurry of heavy oil gasification go through flocculation first, and then adopt the traditional filtration technology, so that the SS concentration of the filtered water can reach the first-class standard in GB13458-92, and at the same time recover high-quality and high-priced carbon black powder and realize low cost run.

Description

technical field [0001] The present invention relates to a waste water flocculant and its preparation method and application, in particular to a kind of heavy oil gasification carbon black waste which is highly effective in solid-liquid separation of heavy oil gasification carbon black slurry in petroleum industry or synthetic ammonia industry which is highly difficult to separate The liquid flocculant and its preparation method and application are the development and supplement of the existing heavy oil gasification carbon black wastewater treatment process, and belong to the industrial wastewater treatment technology. Background technique [0002] Traditional solid-liquid filtration and separation technologies include centrifugal separation, pressure filtration, vacuum filtration and other technologies. With the rapid development of membrane technology recently, membrane filtration has become one of the important technologies in solid-liquid separation. The traditional fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/52B01D21/01C02F103/34
Inventor 吉京甲李泽权郭国友高健罗丹苑宝龙谢凤岩徐英立
Owner 郭国友
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