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Rice paper black liquor pretreatment agent

A pretreatment agent, black liquor technology, applied in water/sewage treatment, processing wastewater treatment, neutralized water/sewage treatment, etc., to reduce pollution, prevent damage, and be easy to popularize

Inactive Publication Date: 2018-07-20
绩溪县上庄老胡开文墨厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of rice paper black liquor pretreatment agent for the problem of how to separate lignin and hemicellulose in black liquor

Method used

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  • Rice paper black liquor pretreatment agent

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Experimental program
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Effect test

Embodiment 1

[0014] A rice paper black liquor pretreatment agent, comprising the following components by weight: 22 parts of polyferric sulfate, 10 parts of basic aluminum chloride, 10 parts of polyphosphorus aluminum chloride, 8 parts of ammonium polyacrylate, 2-imidazolidinone 4 parts, 3 parts of polydimethylsiloxane, 2 parts of modified polyamide epichlorohydrin resin, 0.6 parts of hydroxyl polydimethylsiloxane, 0.8 parts of diimidazolidinyl urea, methylenebisacrylamide 0.1 part, 3 parts of pH regulator, and the balance is 2% ammonia solution.

[0015] Among them, the modified polyamide epichlorohydrin resin is composed of adipic acid, thiourea, and diethylenetriamine at a weight-component ratio of 5:4:8, heated to 160-200°C and kept for 3-4 hours. Modified with epichlorohydrin resin.

[0016] The pH regulator includes a basic regulator and an acidic regulator, the basic regulator is potassium hydroxide; the acidic regulator is a mixture of citric acid and hydrochloric acid.

[0017] ...

Embodiment 2

[0022] A rice paper black liquor pretreatment agent, comprising the following components by weight: 35 parts of polyferric sulfate, 8 parts of basic aluminum chloride, 6 parts of polyphosphorus aluminum chloride, 12 parts of ammonium polyacrylate, 2-imidazolidinone 3 parts, 2 parts of polydimethylsiloxane, 3 parts of modified polyamide epichlorohydrin resin, 0.4 parts of hydroxyl polydimethylsiloxane, 1 part of diimidazolidinyl urea, methylene bisacrylamide 0.2 parts, 5 parts of pH regulator, and the balance is 2% ammonia solution.

[0023] Among them, the modified polyamide epichlorohydrin resin is composed of adipic acid, thiourea, and diethylenetriamine at a weight-component ratio of 5:4:8, heated to 160-200°C and kept for 3-4 hours. Modified with epichlorohydrin resin.

[0024] The pH regulator includes an alkaline regulator and an acidic regulator. The basic regulator is a mixture of sodium hydroxide and sodium bicarbonate; the acidic regulator is hydrochloric acid.

[...

Embodiment 3

[0027] A rice paper black liquor pretreatment agent, comprising the following components by weight: 24 parts of polyferric sulfate, 15 parts of basic aluminum chloride, 6 parts of polyphosphorus aluminum chloride, 15 parts of ammonium polyacrylate, 2-imidazolidinone 2 parts, 3 parts of polydimethylsiloxane, 2 parts of modified polyamide epichlorohydrin resin, 0.5 part of hydroxyl polydimethylsiloxane, 0.7 part of diimidazolidinyl urea, methylenebisacrylamide 0.2 parts, 3 parts of pH regulator, and the balance is 3% ammonia solution.

[0028] Among them, the modified polyamide epichlorohydrin resin is composed of adipic acid, thiourea, and diethylenetriamine at a weight-component ratio of 5:4:8, heated to 160-200°C and kept for 3-4 hours. Modified with epichlorohydrin resin.

[0029] The pH regulator includes an alkaline regulator and an acidic regulator. The basic regulator is a mixture of sodium hydroxide and sodium dihydrogen phosphate; the acidic regulator is a mixture of ...

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Abstract

The invention belongs to the technical field of rice paper black liquor pretreatment technologies, and particularly relates to a rice paper black liquor pretreatment agent. The agent comprises, by part, 20-35 parts of polymeric ferric sulfate, 8-15 parts of basic aluminium chloride, 6-10 parts of polyphosphate aluminum chloride, 6-7 parts of ammonium polyacrylate, 2-4 parts of ethyleneurea, 1-3 parts of polydimethylsiloxanem 2-4 parts of modified polyamide epichiorobydrin resin, 0.2-0.6 part of hydroxy polydimethylsiloxane, 0.4-1.2 parts of imadazolidinyl urea, 0.1-0.2 part of methylene bisacrylamide, 2-3 parts of PH conditioning agent and the balance of aqueous solution of ammonia with a concentration of 3%-5%. The agent is more environmentally-friendly.

Description

technical field [0001] The invention belongs to the technical field of rice paper black liquor treatment, in particular to a rice paper black liquor pretreatment agent. Background technique [0002] The pulp and paper industry is one of the industries that seriously pollute the water environment. The source of pollution is the black liquor of straw pulp cooking. The CODcr produced accounts for about 70% of the paper industry. Raw materials such as straw used in papermaking raw materials contain cellulose, wood There are three parts of cellulose and hemicellulose (polysaccharides). Papermaking only uses cellulose (about 40%), and about 25% of lignin and about 28% of hemicellulose and xylose, Potassium, nitrogen, phosphorus and other substances are discarded along with the black liquor. In recent years, various studies have been carried out around the difficulty of the treatment of wastewater black liquor. Only by effectively separating the lignin and hemicellulose in it can ...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/52C02F1/56C02F1/66C02F103/28
CPCC02F1/00C02F1/5245C02F1/56C02F1/66C02F2103/28
Inventor 胡翠霞
Owner 绩溪县上庄老胡开文墨厂