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Special antiscaling agent for water heater

A descaling agent and water heater technology, which is applied in the field of chemical cleaning materials, can solve the problems of poor metal protection ability, etc., and achieve the effect of small metal corrosion, strong descaling ability, and simple operation

Active Publication Date: 2014-07-09
中科先行工程塑料国家工程研究中心股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scale remover uses hydrochloric acid with strong scale-dissolving ability as the scale-dissolving agent, but hydrochloric acid has strong acidity and poor protection ability for metals

Method used

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  • Special antiscaling agent for water heater

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0019] A special descaling agent for water heaters, which is made by mixing components A, B, C and D, wherein:

[0020] Component A is an acid descaling component, selected from one or two of citric acid, sulfamic acid, malic acid, tartaric acid, maleic acid, ethylenediaminetetraacetic acid, trichloroacetic acid, preferably sulfamic acid, Its weight percentage is 70%-95%, preferably 80%-90%, and the purity is 95-99.5%.

[0021] Component B is a binder, selected from one or both of polymer water-soluble rubber powder, sodium metasilicate, sodium carboxymethylcellulose, and cohesive polyvinyl alcohol, preferably sodium metasilicate, which The weight percentage is 2%-8%, preferably 4%-6%, and the purity is 90%-99%.

[0022] Component C is a metal ion chelating agent and a curing agent, selected from one or both of ethylenediaminetetraacetic acid disodium salt (i.e. EDTA disodium salt) and sodium pyrophosphate, preferably sodium pyrophosphate, and its weight percentage 2% to 20%...

Embodiment 1

[0026] Embodiment 1: a kind of descaling agent special for water heater, is made up of A, B, C, D four kinds of components, and wherein component A is citric acid 90g, and purity is 99.5%; Component B is sodium metasilicate 5g, The purity is 99%; component C is sodium pyrophosphate 4g, the purity is 99%; component D is sodium dodecylbenzenesulfonate 1g. The descaling agent with the above four components is made into a cylinder with a diameter of 12mm and a height of 60mm. The descaling agent was tested as follows:

[0027] (1) Descaling effect measurement:

[0028] Weigh 10g of the descaling agent solidified according to the above formula, put it into a beaker filled with 500ml of water, the cylinder disintegrates immediately, then weigh 6g of the scale scraped from the inner tank of the water heater, put it into the beaker, you can see A large number of bubbles came out and the reaction was violent. After at least 15 minutes, the scale was completely decomposed. It shows t...

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Abstract

The invention relates to a chemical cleaning material, and in particular to a special chemical cleaning material for removing scale of a water heater. The special antiscaling agent for the water heater is characterized by being formed by mixing components A, B, C and C, wherein the component A is an acidic antiscaling component which is 70 to 95% in percentage by weight; the component B is an adhesive which is 2 to 8% in percentage by weight; the component C includes a metal ion chelating agent and a curing agent, which is 2 to 20% in percentage by weight; and the component D is a corrosion inhibitor, which is 1 to 5% in percentage by weight. With the adoption of the prescription, the special antiscaling agent for the water heater provided by the invention has the advantages of being relatively low corrosion to metal, and high antiscaling performance; and moreover, the special antiscaling agent can be manufactured in a certain shape, and the dimension is in line with that of a sewage draining port of the water heater; and the antiscaling agent can be directly added to the water heater through the sewage draining port; the problem that the powdered material or liquid is hardly added can be solved; the antiscaling agent is convenient and quick to use, and the operation is simple to carry out.

Description

technical field [0001] The invention relates to a chemical cleaning material, in particular to a special chemical cleaning material for water heater descaling. Background technique [0002] The scale inside the water heater is very complicated, and the scale is usually divided into four categories according to its main chemical composition: carbonate scale, silicate scale, sulfate scale and mixed scale. Water contains calcium, magnesium ions and carbonate, bicarbonate, sulfate and so on. When the water reaches a certain temperature, the calcium and magnesium ions in it combine with acid radicals to form calcium carbonate, magnesium carbonate, calcium sulfate, etc. to precipitate and precipitate, thus forming scale. [0003] Scale will seriously affect heat conduction, and the calcium carbonate and magnesium carbonate in the scale will deposit in the human body in large quantities and easily form stones. Washing your face and taking a bath with water with heavy scale will f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06
Inventor 刘萌李文东李朝顺甄志超刘晓青杨永生
Owner 中科先行工程塑料国家工程研究中心股份有限公司
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