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Preparation method of polysaccharose nanometer antichlor for industrial water treatment

A technology for industrial water treatment and dechlorination agent, applied in the field of industrial water treatment, can solve problems such as difficulty in removal, difficulty in chloride ion, etc., achieve the effect of obvious dechlorination effect and meet the requirements of hydraulic test

Active Publication Date: 2009-12-09
上海岚淼水处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very difficult to remove chloride ions by ordinary inorganic chemical methods, because most of its compounds are soluble in water, so it is difficult to remove

Method used

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  • Preparation method of polysaccharose nanometer antichlor for industrial water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation method of cross-linked cationic starch granules

[0023] Soluble cationic starch (Hao Rui Food Co., Ltd., Longteng Economic Development Zone, Changli County, Hebei Province) 10 grams is made into a 10% aqueous solution, heated in a boiling water bath until the solution is clear, and placed at room temperature;

[0024] Measure 30ml of toluene and 10ml of chloroform and mix, add surfactant Span80 (Span 80, Shanghai Hongji Chemical Co., Ltd.) accounting for 0.8% of the total volume, stir and mix to form an oil phase emulsion;

[0025] Add the above-mentioned starch hydrolyzate into 5ml oil phase emulsion and mix, continue to stir until a tiny emulsion is formed, add a cross-linking agent glyoxal accounting for 0.2% of the starch mass, continue to stir for 30 minutes, wash the emulsion with acetone and ethanol for 3-5 times , freeze-dried to obtain cross-linked starch granules;

[0026] (2) Preparation of lignin quaternary ammonium salt:

[0027] Weigh 1 ...

Embodiment 2

[0032] (1) Preparation method of cross-linked cationic starch granules

[0033] Soluble cationic starch (Hao Rui Food Co., Ltd., Longteng Economic Development Zone, Changli County, Hebei Province) 15 grams is made into a 10% aqueous solution, heated in a boiling water bath until the solution is clear, and placed at room temperature;

[0034] Measure 30ml of toluene and 10ml of chloroform and mix, add surfactant Span80 (Span 80, Shanghai Hongji Chemical Co., Ltd.) accounting for 0.7% of the total volume, stir and mix to form an oil phase emulsion;

[0035] Add the above-mentioned starch hydrolyzate into 8ml oil phase emulsion and mix, continue to stir until a tiny emulsion is formed, add cross-linking agent glyoxal accounting for 0.3% of the starch mass, continue to stir for 1 hour, wash the emulsion with acetone and ethanol for 3-5 times , freeze-dried to obtain cross-linked starch granules;

[0036] (2) Preparation of lignin quaternary ammonium salt:

[0037] Weigh 1.5 gram...

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Abstract

The invention relates to a preparation method of polysaccharose nanometer antichlor for industrial water treatment, comprising the following steps: (1), preparing soluble cationic starch to water solution; heating till the solution becomes clear; placing at room temperature; mixing with toluene and chloroform; adding surfactant Span80, stirring and mixing uniformly; adding starch hydrolysis liquid into the oil-phase emulsion, stirring; adding glyoxal, continuously stirring, washing, freeze-drying; (2), putting trimethyl amine into the container; placing in ice salt bath; adding epoxy chloropropane, stirring; putting refined lignin into the container; adding sodium hydroxide solution; adding the intermediate monomer after stirring, continuously stirring; (3) mixing cross-linked starch particles and lignin quaternary ammonium salt, obtaining the product. The polysaccharose nanometre antichlor obtained in the invention has more than 60% of average chlorine ion removal rate of the boiler after 3-year practical operation, the maximum removal rate being 80%; the chlorine-removing effect is obvious, and the requirements for the pressure container hydraulic test are satisfied.

Description

technical field [0001] The invention belongs to the field of industrial water treatment, in particular to a preparation method of a polysaccharide nano-chlorination agent used for industrial water treatment. Background technique [0002] Many existing pressure vessels are mostly made of 304 and 316 stainless steel. During the hydrostatic test of pressure vessels, the concentration of chloride ions in the national standard is less than 25ppm. Because the concentration of chloride ions in tap water is about 100ppm, tap water cannot be used for hydrostatic testing. Therefore, the current solution is to purchase desalted water for hydrostatic testing, but the cost of this method is relatively expensive, per ton The price of desalted water is around 300 yuan. [0003] Keeping the metal surface in good condition inside the industrial water circulation system is of great significance to its safe and economical operation. However, because the water quality inside the water vapor s...

Claims

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Application Information

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IPC IPC(8): C08L3/04C08L97/02
Inventor 马宝全朱祥
Owner 上海岚淼水处理科技有限公司
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