Circulating-water saving scale remover

A descaling agent and circulating water technology, applied in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as increased water scaling and excessively high hardness of circulating cooling water , to achieve the effect of reducing the amount of supplementary water, increasing the service life and increasing the concentration multiple

Inactive Publication Date: 2018-02-16
张艳军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the concentration ratio is too high, the hardness of the circulating cooling water will rise too high, which will increase the scaling of the water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1

[0015] A water-saving descaling agent for circulating water, comprising 3% by mass of polymerized maleic anhydride, 0.4% by mass of activated carbon, 3% by mass of sodium alginate, and 0.6% by mass of polyacrylamide, The mass percentage of polyaluminum sulfate is 2%, the mass percentage of boron oxide is 2%, the mass percentage of hydroxycarboxylate polymer HLE is 58%, the mass percentage of polyferrous sulfate is 4%, ethylenediaminetetramethylene The mass percentage of sodium phosphate EDTMPS is 5%, the mass percentage of polyol phosphate ester PAPE is 5%, the mass percentage of starch is 3%, and the mass percentage of caustic soda is 14%.

Embodiment 2

[0017] A water-saving descaling agent for circulating water, comprising 2% by mass of polymerized maleic anhydride, 0.2% by mass of activated carbon, 2% by mass of sodium alginate, and 0.5% by mass of polyacrylamide, The mass percentage of polyaluminum sulfate is 1%, the mass percentage of boron oxide is 1%, the mass percentage of hydroxycarboxylate polymer HLE is 55%, the mass percentage of polyferrous sulfate is 3%, ethylenediaminetetramethylene The mass percentage of sodium phosphate EDTMPS is 10%, the mass percentage of polyol phosphate ester PAPE is 10%, the mass percentage of starch is 3%, and the mass percentage of caustic soda is 12.3%.

Embodiment 3

[0019] A water-saving descaling agent for circulating water, comprising 5% by mass of polymerized maleic anhydride, 0.5% by mass of activated carbon, 5% by mass of sodium alginate, and 0.8% by mass of polyacrylamide, The mass percentage of polyaluminum sulfate is 3%, the mass percentage of boron oxide is 3%, the mass percentage of hydroxycarboxylate polymer HLE is 60%, the mass percentage of polyferrous sulfate is 5%, ethylenediaminetetramethylene The mass percentage of sodium phosphate EDTMPS is 3%, the mass percentage of polyol phosphate ester PAPE is 4%, the mass percentage of starch is 4%, and the mass percentage of caustic soda is 6.7%.

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PUM

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Abstract

The invention relates to scale removers, especially to a circulating-water saving scale remover. The circulating-water saving scale remover is characterized by being a mixture of two or more of polymaleic anhydride, activated carbon, sodium alginate, polyacrylamide, polyaluminum sulfate, boron oxide, a hydroxy carboxylate polymer HLE, polymeric ferrous sulfate, ethylene diamine tetra (methylene phosphonic acid)sodium EDTMPS, polyhydric alcohol phosphate ester PAPE, starch or caustic soda. According to the invention, calcium and magnesium ions in macromoleclar polymer complexing water can formprecipitate, thereby not only increasing the concentration multiple, but also greatly lowering the hardness of water, and not causing water scaling simultaneously.

Description

technical field [0001] The invention relates to a descaling agent, in particular to a water-saving and descaling agent for circulating water. Background technique [0002] Fresh water is a limited and precious resource in the world, and it is also the source of life on which human beings and all living things depend. In the chemical industry, the role is huge. The operation of the circulating water system is directly related to the safe and efficient production of the enterprise, is the guarantee for the long-term development of the enterprise, and is related to the development of a country and even the entire nation. [0003] my country is a country seriously short of water, and it is imperative to save water and reduce emissions. In an open circulating cooling water system, the concentration ratio is a major indicator. The greater the concentration ratio, the higher the water reuse rate, the less sewage, and of course the less water replenishment. Therefore, increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C23F11/173
CPCC02F5/145C23F11/173
Inventor 张艳军
Owner 张艳军
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