A chemical solution for on-line cleaning of coke dry quenching condenser, preparation method and on-line cleaning method

A condenser and coke dry quenching technology, applied in the field of on-line cleaning and on-line condenser cleaning, can solve the problems of ineffective cleaning of the condenser cleaning liquid and inconvenient on-line cleaning of the condenser, and shorten the cleaning time. Time, low toxicity, high water solubility effect

Active Publication Date: 2021-09-24
SICHUAN DAXING ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a chemical solution for on-line cleaning of coke CDQ condensers, a preparation method and an on-line cleaning method to solve the problem that the cleaning effect of the existing condenser cleaning chemical solution is not obvious and the condenser is on-line. The problem of inconvenient cleaning

Method used

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  • A chemical solution for on-line cleaning of coke dry quenching condenser, preparation method and on-line cleaning method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The medicinal solution for on-line cleaning of CDQ condensers in this embodiment includes: in parts by weight, 40 parts of mixed acid, 10 parts of corrosion inhibitor, 10 parts of penetrant, 10 parts of defoamer, 5 parts of chelating agent 30 parts of water and 30 parts;

[0029] Wherein, the mixed acid includes: sulfuric acid, sulfamic acid and 2-carboxyethyl phosphoric acid, and their respective mass ratios are 1:0.8:0.6;

[0030] The chelating agent includes: hydroxyethylthiosuccinic acid and diethyltriaminepentaacetic acid, and their respective mass ratios are 1:0.1;

[0031] The penetrating agent is: sodium succinate sulfonate; the defoaming agent is polyoxyethylene octylphenol ether;

[0032] The corrosion inhibitors include: urotropine, tolyltriazole, ammonium thiocyanate and 1,3-dithiosemicarbazide, and their respective mass ratios are 1:0.5:0.75:0.5.

[0033] The preparation method of the medicinal solution for online cleaning of the coke dry quenching conden...

Embodiment 2

[0036] The medicinal solution for on-line cleaning of CDQ condensers in this embodiment includes: in parts by weight, 50 parts of mixed acid, 15 parts of corrosion inhibitor, 13 parts of penetrating agent, 11 parts of defoamer, 6 parts of chelating agent parts and 35 parts of water;

[0037] Wherein, the mixed acid includes: sulfuric acid, sulfamic acid and 2-carboxyethyl phosphoric acid, and their respective mass ratios are 1:0.85:0.65;

[0038] The chelating agent includes: hydroxyethylthiosuccinic acid and diethyltriaminepentaacetic acid, and their respective mass ratios are 1:0.15;

[0039] The penetrating agent is: sodium sulfosuccinate; the defoamer is polyoxyethylene octylphenol ether;

[0040] The corrosion inhibitors include: urotropine, tolyltriazole, ammonium thiocyanate and 1,3-dithiosemicarbazide, and their respective mass ratios are 1:0.6:0.8:0.6.

[0041] The preparation method of the medicinal solution for online cleaning of the coke dry quenching condenser i...

Embodiment 3

[0044]The medicinal solution for on-line cleaning of CDQ condensers in this embodiment includes: in parts by weight, 55 parts of mixed acid, 17 parts of corrosion inhibitor, 15 parts of penetrating agent, 12 parts of defoamer, 7 parts of chelating agent 40 parts and 40 parts of water;

[0045] Wherein, the mixed acid includes: sulfuric acid, sulfamic acid and 2-carboxyethyl phosphoric acid, and their respective mass ratios are 1:0.9:0.7;

[0046] The chelating agent includes: hydroxyethylthiosuccinic acid and diethyltriaminepentaacetic acid, and their respective mass ratios are 1:0.2;

[0047] The penetrating agent is: sodium succinate sulfonate; the defoaming agent is polyoxyethylene octylphenol ether;

[0048] The corrosion inhibitors include: urotropine, tolyltriazole, ammonium thiocyanate and 1,3-dithiosemicarbazide, and their respective mass ratios are 1:0.65:0.85:0.7.

[0049] The preparation method of the medicinal solution for online cleaning of the coke dry quenchin...

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Abstract

The invention discloses a medicinal solution for on-line cleaning of a coke dry quenching condenser, a preparation method and an on-line cleaning method, and belongs to the technical field of on-line cleaning of condensers. Its medicinal solution includes: by weight, 40-70 parts of mixed acid, 10-25 parts of corrosion inhibitor, 10-20 parts of penetrant, 10-15 parts of defoamer, 5-10 parts of chelating agent 30-50 parts of water and 30-50 parts; wherein, mixed acid includes: sulfuric acid, sulfamic acid and 2-carboxyethyl phosphoric acid; chelating agent includes: hydroxyethyl thiosuccinic acid and diethyltriaminepentaacetic acid; penetrant For: sodium succinate sulfonate; defoamer is polyoxyethylene octyl phenol ether. The medicinal liquid used for on-line cleaning of the coke dry quenching condenser of the present invention has strong scale-dissolving ability, good cleaning effect, safety and environmental protection, and no pollution to the environment. The on-line cleaning method of the present invention has short time, low cost, scale removal rate greater than 85%, and remarkable cleaning effect.

Description

technical field [0001] The invention relates to the technical field of on-line cleaning of condensers, in particular to a medicinal solution for on-line cleaning of coke dry quenching condensers, a preparation method and an on-line cleaning method. Background technique [0002] In the coke CDQ production system, the steam condensing equipment in the power generation unit is an important heat exchange equipment, which acts as a heat exchanger to condense the exhaust gas of the steam turbine into water, and to form and maintain the required vacuum. Condensing equipment includes condensers, air extractors, condensate pumps and circulating water pumps, of which the condenser is the most important component. The condenser is the cold source in the whole thermodynamic cycle. Its main function is to form a relatively high vacuum at the exhaust port of the steam turbine, so that the steam expands to the lowest pressure in the steam turbine, increases the available enthalpy drop of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/08C23G1/04F28G9/00
CPCC23G1/04C23G1/088F28G9/00
Inventor 张光辉李正清唐德江陈伟肖发兵李兴瑜徐苇
Owner SICHUAN DAXING ENERGY CO LTD
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