Liquor used for online cleaning of dry quenching condenser, preparation method and method for online cleaning

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

Active Publication Date: 2019-11-29
SICHUAN DAXING ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Liquor used for online cleaning of dry quenching condenser, preparation method and method for online cleaning

Examples

Experimental program
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Example Embodiment

[0027] Example 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...

Example Embodiment

[0035] Example 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 succinate sulfonate; the defoaming agent 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 t...

Example Embodiment

[0043] Example 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 ...

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Abstract

The invention discloses liquor used for online cleaning of a dry quenching condenser, a preparation method and a method for online cleaning, and belongs to the technical field of online cleaning of condensers. The liquor comprises, by weight, 40-70 parts of mixed acid, 10-25 parts of a corrosion inhibitor, 10-20 parts of a penetrating agent, 10-15 parts of a defoaming agent, 5-10 parts of a chelating agent and 30-50 parts of water. The mixed acid comprises sulfuric acid, sulfamic acid and 2-carboxylethic acid. The chelating agent comprises hydroxyethyl thiosuccinic acid and diethylene triaminepenlaacetic acid. Sodium succinate sulfonate serves as the penetrating agent. Polyoxyethylene octyl phenol ether serves as the defoaming agent. The liquor used for online cleaning of the dry quenching condenser is high in dirt dissolving capacity, good in cleaning effect, safe, environment-friendly and free of pollution to the environment. The method for online cleaning is short in time and low in cost, the dirt removal rate is larger than 85%, and the cleaning effect is remarkable.

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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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
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