Descaling agent for water scale of condensing equipment and descaling method

A technology for condensing equipment and a descaling agent is applied in the field of scaling and descaling agent for condensing equipment and its preparation. Effect

Active Publication Date: 2013-12-25
宁夏启元国药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, various types of descaling agents are widely used, but

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare condensing equipment scale according to the following mass percentages:

[0030] Dissolving agent (the ratio of oxalic acid to glacial acetic acid is 1:2) 15%, penetrant dioctyl sulfosuccinate sodium salt 3%, corrosion inhibitor urotropine 4%, cosolvent acetamide 20%, purification 30% water, and ethanol in the balance.

[0031] Descaling method: according to the above prescription, add the dissolving agent, penetrating agent, corrosion inhibitor, co-solvent and purified water into a suitable container, stir and mix well, heat the solution to 30°C with water steam, add it to the condenser, and use soaking 30 minutes and 5 hours of repeated cleaning are combined for cleaning, and the total cleaning time is 48 hours.

Embodiment 2

[0033] Prepare condensing equipment scale according to the following mass percentages:

[0034] Dissolving agent (the ratio of oxalic acid to glacial acetic acid is 1:1) 15%, penetrant dioctyl sulfosuccinate sodium salt 3%, corrosion inhibitor aniline 4%, cosolvent acetamide 20%, purified water 30% , The balance is added ethanol.

[0035] Descaling method: according to the above prescription, add the dissolving agent, penetrating agent, corrosion inhibitor, co-solvent and purified water into a suitable container, stir and mix well, heat the solution to 35°C with water steam, add it to the condenser, and use soaking 40 minutes and 4.5 hours of repeated cleaning combined with a cycle of cleaning, the total cleaning time is 45 hours.

Embodiment 3

[0037] Prepare condensing equipment scale according to the following mass percentages:

[0038] Dissolving agent (the ratio of oxalic acid and glacial acetic acid is 1:0.5) 15%, penetrant dioctyl sulfosuccinate sodium salt 3%, corrosion inhibitor rhodin 4%, cosolvent acetamide 20%, purified water 30% %, the balance was added ethanol.

[0039] Descaling method: according to the above prescription, add the dissolving agent, penetrating agent, corrosion inhibitor, co-solvent and purified water into a suitable container, stir and mix well, heat the solution to 40°C with water steam, add it to the condenser, and use soaking 50 minutes and 4 hours of repeated cleaning combined with a cycle of cleaning, the total cleaning time is 42 hours.

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PUM

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Abstract

The invention relates to a descaling agent for water scale of condensing equipment and a descaling method. The descaling agent comprises the following materials in percentage by weight: 15%-30% of dissolving agents, 2%-5% of permeating agents, 1%-5% of corrosion inhibitors, 10%-30% of cosolvents, 20%-30% of purified water and the balance of ethanol, wherein the dissolving agents are selected from oxalic acid, citric acid, ascorbic acid, salicylic acid and glacial acetic acid; the permeating agents are selected from diethyl succinate, butyl cellusolve and sulfonated dioctyl succinate sodium salt; the corrosion inhibitors are selected from urotropine, aniline and diethyl thiourea or rodine; the cosolvents are selected from para-benzoic acid, urea, cyclohexanone, acetamide and sodium salicylate. The descaling agent disclosed by the invention is obtained by blending the raw materials, has high descaling capacity and higher descaling speed by utilizing combined effect, is less in corrosion on equipment and low in price and can save a large amount of cleaning expense, enhance the equipment operation level, the energy utilization level and the production efficiency and greatly reduce the product production cost.

Description

Technical field [0001] The invention involves a stains and preparation methods for condensed equipment. Background technique [0002] In the pharmaceutical factory of the Chinese patent patent agent, the concentrated equipment of the medicine extraction process mostly uses water -cooled condenser. After a period of use, the inner wall is easy to form scaleCleaning causes a thick scale layer on the wall of the tube, thereby increasing the heat transfer of the wall of the condenser, reducing the heat exchange efficiency, thereby extending the condensation time, increasing the steam consumption, greatly increasing the production of product productioncost.Moreover, when the scaling is severe, it will cause the cooling pipeline to block and severely corrode the condensate equipment, and shorten the service life of the equipment.According to observations, the thickness of the condenser can reach more than 1.5mm with a thickness of about 1 year. At this time, the scale must be removed t...

Claims

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Application Information

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IPC IPC(8): C23G1/06
Inventor 孙志刚丁建宝
Owner 宁夏启元国药有限公司
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