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Scale remover used for cleaning hot-blast stove and boiler and accessories thereof, and cleaning method thereof

A technology of hot blast stove and descaling agent, which is applied in the direction of using liquid cleaning methods, chemical instruments and methods, cleaning methods and utensils, etc. It can solve the problems of metal surface finish deterioration, metal corrosion, etc., and achieve efficient descaling and prolong Long service life, non-toxic and side effects

Inactive Publication Date: 2015-01-21
范国臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problems of severe metal corrosion, easy secondary oxidation, and poor metal surface finish when the existing descaling agent cleans the hot blast stove and boiler, and provides a method for cleaning hot blast stoves and boilers. Descaling agent and cleaning method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The descaling agent for cleaning hot blast stoves and boilers and their accessories in the present embodiment, wherein: it is made of the following raw materials in weight percentage: 8% hydrochloric acid, 1% sodium fluoride, 1.5% trisodium phosphate, slow Etching agent 0.6%, penetrant 1.5%, and the rest is water.

[0034] A cleaning method using the descaling agent for cleaning hot blast stoves and boilers and accessories thereof in the present embodiment, wherein: the step of cleaning hot blast stoves is:

[0035] (1) Check the equipment and select the drying point;

[0036] (2) Use high-pressure water gun flushing and mechanical dredging in advance to remove aerosols and attachments on the working surface of the hot blast stove;

[0037] (3) configure descaling agent and neutralizing agent respectively, and described descaling agent is made of the raw material of following percentage by weight: hydrochloric acid 8%, sodium fluoride 1%, trisodium phosphate 1.5%, corr...

Embodiment 2

[0056] The descaling agent for cleaning hot blast stoves and boilers and their accessories in the present embodiment, wherein: it is made of the following raw materials in percentage by weight: hydrochloric acid 10%, sodium fluoride 6%, trisodium phosphate 3%, slow Etching agent 0.6%, penetrant 3%, and the rest is water.

[0057] A cleaning method using the descaling agent for cleaning hot blast stoves and boilers and accessories thereof in the present embodiment, wherein: the step of cleaning hot blast stoves is:

[0058] (1) Check the equipment and select the drying point;

[0059] (2) Use high-pressure water gun flushing and mechanical dredging in advance to remove aerosols and attachments on the working surface of the hot blast stove;

[0060] (3) configure descaling agent and neutralizing agent respectively, described descaling agent is made of the raw material of following percentage by weight: hydrochloric acid 10%, sodium fluoride 6%, trisodium phosphate 3%, corrosion...

Embodiment 3

[0079] The descaling agent for cleaning hot blast stoves and boilers and their accessories in the present embodiment, wherein: it is made of the following raw materials in weight percentage: 9% hydrochloric acid, 4% sodium fluoride, 2% trisodium phosphate, slow Etching agent 0.6%, penetrating agent 2%, and the rest is water.

[0080] A cleaning method using the descaling agent for cleaning hot blast stoves and boilers and accessories thereof in the present embodiment, wherein: the step of cleaning hot blast stoves is:

[0081] (1) Check the equipment and select the drying point;

[0082] (2) Use high-pressure water gun flushing and mechanical dredging in advance to remove aerosols and attachments on the working surface of the hot blast stove;

[0083] (3) configure descaling agent and neutralizing agent respectively, and described descaling agent is made of the raw material of following percentage by weight: the raw material of ratio is made: hydrochloric acid 9%, sodium fluo...

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PUM

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Abstract

The invention belongs to the technical field of a chemical descaling cleaning compound, and concretely relates to a scale remover used for cleaning a hot-blast stove and a boiler and accessories thereof, and a cleaning method thereof. The scale remover solves the technical problems that severe metal corrosion is generated when the current scale removers are used for cleaning the hot-blast stove and the boilers, secondary oxidation is easily generated, and metal surface fineness is poor. For solving the above technical problems, the invention provides the scale remover used for cleaning hot-blast stove and boiler and accessories thereof, the scale remover comprises the following raw materials by weight: 8-10% of hydrochloric acid, 1-6% of sodium fluoride, 1.5-3% of trisodium phosphate, 0.6% of corrosion inhibitor, 1.5-3% of osmotic agent and the balance of water. The scale remover has the advantages that descaling efficiency is high, no toxic and side effect is generated, no environmental pollution is generated on the waste after descaling, and a protection film is formed on the metal surface to prolong the equipment usage life.

Description

technical field [0001] The invention belongs to the technical field of chemical descaling and cleaning agents, and in particular relates to a descaling agent for cleaning hot blast stoves, boilers and accessories thereof and a cleaning method thereof. Background technique [0002] Scale is a mixture of compounds and impurities that precipitate out of water when it is heated. Scale can be roughly divided into two types, hard scale and soft scale, according to the cause of its formation and the different forming states. When the water contains impurities such as carbonate colloids, bacteria and organic matter, the carbonate is similar to sand in cement mortar, while colloids, bacteria and organic matter are equivalent to cement in cement mortar. Viscous substances and carbonates work together to form hard scale that adheres to the container (or pipe surface) under high temperature conditions. Once the viscous substances such as colloids, bacteria and organic matter are remov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D7/60C11D7/16C11D7/10C11D7/08B08B3/02B08B3/08
Inventor 范国臣范简
Owner 范国臣
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