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A kind of preparation method of polyferric sulfate

A technology for polymerizing ferric sulfate and polymeric sulfuric acid, which is applied in the fields of ferric sulfate, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as complex production process of polymeric ferric sulfate, and achieve environmental protection and operability Strong performance, good production efficiency and economic benefits

Active Publication Date: 2021-06-29
徐州清流水环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the complex defect of the production process of prior art polyferric sulfate, and provide a kind of preparation method of polyferric sulfate

Method used

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  • A kind of preparation method of polyferric sulfate
  • A kind of preparation method of polyferric sulfate
  • A kind of preparation method of polyferric sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the experimental kettle of 5L, add the pickling waste liquid of 2kg steel pipe factory (wherein ferrous iron is with Fe 2+ The mass fraction is 10%, the acid is H 2 SO 4 The mass fraction is 8%), then add 2kg of by-product ferrous sulfate from the titanium dioxide factory, add catalyst 98% sulfuric acid working solution and auxiliary catalyst sodium phosphate, feed oxygen, then start stirring or circulation pump, take every five minutes One time sample PFS-1#, measure the remaining ferrous content. Wherein the catalyst 98% sulfuric acid is configured as a working solution with a mass fraction of 1‰, 1 kg of the working solution is used per ton of finished product, and the amount of the auxiliary catalyst is 1 g per ton of finished product.

Embodiment 2

[0020] In the experimental kettle of 5L, add the pickling waste liquid of 2kg pipe drawing factory (wherein ferrous is Fe 2+ The mass fraction is 13%, the acid is H 2 SO 4 The mass fraction is 9%), then add 2.2kg of by-product ferrous sulfate from the titanium dioxide factory, add catalyst 98% sulfuric acid working solution and auxiliary catalyst sodium phosphate, pass into ozone, then start stirring or circulation pump, every five minutes Take a sample of PFS-2# to measure the remaining ferrous content. Wherein the catalyst 98% sulfuric acid is configured into a working solution with a mass fraction of 2‰, 2 kg of the working solution is used per ton of finished product, and the amount of the auxiliary catalyst is 2 g per ton of finished product.

Embodiment 3

[0022] In the experimental kettle of 5L, add the pickling waste liquid of 2kg pipe drawing factory (wherein ferrous is Fe 2+ The mass fraction is 15%, the acid is H 2 SO 4 The mass fraction is 10%), then add 2.4kg of by-product ferrous sulfate from the titanium dioxide factory, add catalyst 98% sulfuric acid working solution and auxiliary catalyst sodium phosphate, feed ozone, then start stirring or circulation pump, every five minutes Take a sample of PFS-3# to measure the remaining ferrous content. Wherein the catalyst 98% sulfuric acid is configured into a working solution with a mass fraction of 2‰, 2 kg of the working solution is used per ton of finished product, and the amount of the auxiliary catalyst is 2 g per ton of finished product.

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Abstract

The invention belongs to the field of preparation of water treatment agents, in particular to a preparation method of polyferric sulfate. A preparation method of polyferric sulfate comprises the following steps of reacting ferrous sulfate mixed solution with an oxidizing agent under the condition of a catalyst and an auxiliary catalyst to prepare polyferric sulfate. Advantages of the present invention: (1) the present invention is under the action of catalyst, ferrous sulfate mixed solution and oxidant one-step reaction makes polyferric sulfate, and production step is simple, operability is strong; (2) greatly reduces the production cost of product, can Good production benefit and economic benefit have been obtained; (3) sodium phosphate is added as an auxiliary catalyst in the preparation process, so that the polyferric sulfate prepared by the present invention has a stable state and better product coagulation effect, and the obtained product The characteristics meet the requirements of national standards; (4) The pickling waste liquid of the steel pipe factory or the pipe drawing factory is prepared to produce polyferric sulfate, which turns waste into treasure, does not cause secondary pollution, and is beneficial to environmental protection.

Description

technical field [0001] The invention belongs to the field of preparation of water treatment agents, in particular to a preparation method of polyferric sulfate. Background technique [0002] The commonly used inorganic coagulants are mainly divided into two categories: aluminum salts and iron salts. Among the aluminum salts, polyaluminum chloride, aluminum sulfate and aluminum chloride are the main ones. The iron salt is mainly polyferric sulfate. Since the 1960s, polyaluminum chloride has occupied a place in the market with its unique advantages, but the advancement of technology has also exposed certain shortcomings. Polyferric sulfate was first invented by Japan in the 1970s, and it was developed and put into industrial production in my country in the 1980s. Especially after my country's Ministry of Environmental Protection announced the "Water Ten Measures" in 2015, the application of polyferric sulfate in sewage treatment has been more fully developed. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F11/143C01G49/14
CPCC01G49/14C02F1/5245C02F11/14
Inventor 赵佳
Owner 徐州清流水环保科技有限公司
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