A novel compound method of copolymerized silicate flocculating agent

A flocculant and silicate technology, applied in the direction of silicon compounds, chemical instruments and methods, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of not seeing high chlorosilane, etc., achieve excellent coagulation effect and low production cost cost, the effect of the ability to increase impurities

Inactive Publication Date: 2009-09-16
李绍通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report on the application of high chlorosilane, mainly silicon tetrachloride (or a mixture of silicon tetrachloride and trichlorosilane), to flocculant research and production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 2,000 kg of solid industrial ferrous sulfate and 900 kg of 20% sulfuric acid into an acid-resistant enamel reaction kettle, stir to raise the temperature, add 100 kg of acidic ferric nitrate sulfate, feed air or oxygen to catalyze oxidation polymerization, and react at a temperature range of 75-105°C The reaction time is controlled within 2 hours, and then slowly add 30 kg of silicon tetrachloride to carry out copolymerization for 1-3 hours to form dark brown viscous copolysilicate ferric chloride sulfate.

Embodiment 2

[0014] Add 200 kg of polyferric chloride (containing 42% ferric chloride) into the acid-resistant enamel reaction kettle, stir and raise the temperature to 4575 ° C, slowly add 3 kg of silicon tetrachloride, carry out copolymerization for 1-3 hours, add stabilizer to adjust Generate dark brown copolysilicate ferric chloride.

Embodiment 3

[0016] Add 12,000 kilograms of polyaluminum chloride (containing aluminum oxide: 10%) into the chlorination polymerization reactor, stir and raise the temperature to 75-105°C, slowly add 1,500 kilograms of silicon tetrachloride to carry out copolymerization for 1-6 hours, and then Calcium aluminate is then added to adjust the copolymerization reaction to a pH of 2.7-3.5 to generate polysilicate aluminum chloride.

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PUM

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Abstract

The invention discloses a novel compound method of copolymerized silicate flocculating agent. The method compounds middle and later stage of polyaluminium chloride, polyaluminium ferric chloride, polymerized ferric chloride, or polymerized ferric sulfate and the like flocculating agents, or adding high chloro-silicane together with polyaluminium chloride, polyaluminium ferric chloride, polymerized ferric chloride, or polymerized ferric sulfate and the like liquid flocculating agents to perform copolymerization reaction with the polymer to compound the copolymerized silicate flocculating agent. The invention overcomes the problem of using traditional acidified method for preparing polysilicate flocculating agent, simplifies the synthetic process route for providing facilitation to the large-scale production of copolymerized silicate flocculating agent, and reduces fabricating cost.

Description

technical field [0001] The invention relates to a new method for synthesizing high-efficiency flocculant copolysilicate. Background technique [0002] In water treatment, coagulation sedimentation is an important unit operation step to remove colloidal suspended impurities and organic impurities in water. The effect of coagulation and settlement determines the final water treatment effect and the cost of water treatment. When the water treatment process is determined, the coagulation effect of the coagulant (flocculant) determines the effluent water quality of the final water treatment. The road to the industrialization of flocculants began in 1884 when the United States successfully developed and produced the first generation of water treatment agent aluminum sulfate. At present, inorganic polymer flocculants such as polyaluminum chloride, polyaluminum ferric chloride, polyferric chloride or polyferric sulfate have been widely used, and have been significantly improved co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/20C02F1/52
Inventor 李绍通
Owner 李绍通
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