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Scaling cleaning agent and cleaning method for slag flushing water system in ironworks

A scaling cleaning agent and slag flushing water technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. Stability, complex scaling components, etc., to achieve the effect of improving efficiency and flexibility of operation, low cost, and reasonable formula design

Inactive Publication Date: 2020-06-30
韶关市雅鲁环保实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, due to the complex scaling components in the slag flushing water system of ironworks, including calcium and magnesium carbonate scale, silicate scale, phosphate scale, iron oxide scale, aluminum scale, sulfur scale and other deposits, and Scaling types include inorganic scale, colloidal scale, etc. In the prior art, there is no effective cleaning agent and cleaning method specifically for scaling in the slag flushing water system. It is difficult to maintain the stability of the circulating water in the system, and the scaling of equipment and pipelines is still serious. Affecting the operation of the slag flushing water system

Method used

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  • Scaling cleaning agent and cleaning method for slag flushing water system in ironworks
  • Scaling cleaning agent and cleaning method for slag flushing water system in ironworks
  • Scaling cleaning agent and cleaning method for slag flushing water system in ironworks

Examples

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Effect test

Embodiment 1

[0058] The fouling cleaning agent of the slag flushing water system of the ironworks of the present embodiment comprises the following components by mass percentage:

[0059] S-Carboxyethylthiosuccinic acid 22%

[0060] Polyether polyaminomethylene phosphonate sodium N-oxide 23%

[0061] Acrylic acid-hydroxypropyl acrylate copolymer 15%

[0062] Industrial grade hydrochloric acid (mass concentration 31%) 20%

[0063] Diethylenetriaminepentamethylenephosphonic acid 18%

[0064] Sodium diisooctyl sulfonate maleate 2%.

[0065] The fouling cleaning agent is prepared by the following steps: under normal temperature and normal pressure, first weigh the components according to the proportion, and then mix S-carboxyethyl thiosuccinic acid and polyether polyaminomethylene phosphine Add salt N-sodium oxide into the enamel reaction kettle, start the stirring motor, and then slowly add acrylic acid-hydroxypropyl acrylate copolymer, industrial grade hydrochloric acid, diethylenetriami...

Embodiment 2

[0071] The fouling cleaning agent of the slag flushing water system of the ironworks of the present embodiment comprises the following components by mass percentage:

[0072] S-Carboxyethylthiosuccinic acid 20%

[0073] Polyether polyaminomethylene phosphonate sodium N-oxide 25%

[0074] Acrylic acid-hydroxypropyl acrylate copolymer 12%

[0075] Industrial grade hydrochloric acid (mass concentration 31%) 25%

[0076] Diethylenetriaminepentamethylenephosphonic acid 15%

[0077] Sodium diisooctyl sulfonate maleate 3%.

[0078] The preparation method of the fouling cleaning agent is the same as that of Example 1.

[0079] The cleaning method of the slag flushing water system of the ironworks in this embodiment is the same as that in Embodiment 1.

Embodiment 3

[0081] The fouling cleaning agent of the slag flushing water system of the ironworks of the present embodiment comprises the following components by mass percentage:

[0082] S-Carboxyethylthiosuccinic acid 12%

[0083] Polyether polyaminomethylene phosphonate sodium N-oxide 45%

[0084] Acrylic acid-hydroxypropyl acrylate copolymer 6%

[0085] Industrial grade hydrochloric acid (mass concentration 31%) 28%

[0086] Diethylenetriaminepentamethylenephosphonic acid 8.9%

[0087] Sodium diisooctyl sulfonate maleate 0.1%.

[0088] The preparation method of the fouling cleaning agent is the same as that of Example 1.

[0089] The cleaning method of the slag flushing water system of the ironworks in this embodiment is the same as that in Embodiment 1.

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Abstract

The invention relates to a scale cleaning agent for a cinder flushing water system of an iron-making plant. The scale cleaning agent contains the following components in percentage by mass: 5%-45% of S-carboxyethyl thiosuccinic acid, 1%-45% of polyether polyamino methylene phosphonate N-oxide, 6%-40% of an acrylic acid-hydroxypropyl acrylate copolymer, 20%-35% of hydrochloric acid, 1%-25% of diethylenetriamine pentamethylene phosphate and 0.1%-3% of diisooctyl cis-butenedioate sulfonate, wherein the mass concentration of hydrochloric acid is 30%-36%. The invention further relates to a cleaning method for the cinder flushing water system of the iron-making plant. According to the scale cleaning agent, scale of equipment and pipelines in the cinder flushing water system of the iron-making plant can be effectively cleared; the scale cleaning agent has the advantages that the pertinence is strong, a formula is environment-friendly, the cost is low, and the preparation is simple; and the cleaning method has the advantages that the operation steps are simple and feasible, the cleaning is flexible, and use equipment is few.

Description

technical field [0001] The invention relates to the technical field of chemical system cleaning, in particular to a scaling cleaning agent and cleaning method for the slag flushing water system of an ironworks. Background technique [0002] Blast furnace slag is a solid waste formed from gangue in ore, ash in fuel and non-volatile components in flux during the blast furnace ironmaking process, mainly containing oxides of calcium, silicon, aluminum, magnesium, iron and a small amount sulfide. [0003] The blast furnace slag water quenching process is currently the main method for treating blast furnace slag in my country's ironworks. This method uses circulating water for water quenching blast furnace slag through the slag flushing water system. see figure 1 , which is a schematic diagram of the slag flushing water system in an existing ironworks, and the arrows in the figure indicate the flow direction of circulating water. The slag flushing water system generally include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C21B3/08
CPCC02F5/145C21B3/08
Inventor 肖波潘丽梅
Owner 韶关市雅鲁环保实业有限公司