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Condensing equipment scale descaling agent and descaling method

A technology of condensing equipment and descaling agent, which is applied in the field of scale descaling agent for condensing equipment and its preparation, which can solve the problems of unsatisfactory cleaning effect and high cost, and achieve the purpose of solving scale adhesion, saving cleaning costs, and strong descaling ability Effect

Active Publication Date: 2016-03-30
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 the cleaning effect is not ideal, and the cost is relatively high

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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Abstract

The invention relates to a scale remover for condensation equipment and a preparation method thereof. The scale remover is composed of 15% to 30% of a dissolving agent, 2% to 5% of a penetrating agent, 1% to 5% of a corrosion inhibitor, and a cosolvent 10% to 30%, purified water 20% to 30%, and the rest is ethanol, in terms of mass percentage; the dissolving agent is selected from oxalic acid, citrate, ascorbic acid, salicylic acid and glacial acetic acid, and the penetrant is selected from diethyl succinate Among esters, ethylene glycol monobutyl ether and dioctyl sulfosuccinate sodium salt, the corrosion inhibitor can be hexamethamine, aniline, diethylthiourea or rhodin, and the cosolvent can be p-benzoic acid, urea, Cyclohexanone, acetamide and sodium salicylate. The invention combines the above-mentioned raw materials and utilizes the combination effect to make them have strong descaling ability and fast descaling speed, less corrosion to equipment, low price, can save a lot of cleaning costs, and improve equipment operation level and energy utilization The level and production efficiency have greatly reduced the cost of producing products.

Description

technical field [0001] The invention relates to a scale remover for condensation equipment and a preparation method thereof. Background technique [0002] In pharmaceutical factories that produce Chinese patent medicine preparations, water-cooled condensers are often used for the concentration equipment in the extraction process of Chinese medicines. After a period of use, scales are easily formed on the inner wall of such equipment. Due to the long production cycle, the condensing equipment often cannot be obtained in time. The cleaning caused a thick scale layer on the tube wall, which increased the heat transfer resistance of the condenser tube wall and reduced the heat transfer efficiency, thereby prolonging the condensation time, increasing the steam consumption, and greatly increasing the production of the product. cost. Moreover, when the fouling is serious, it will also cause blockage of cooling pipes and serious corrosion of condensing equipment, shortening the ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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