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A kind of desulfurization and defoaming agent of high temperature resistant body type power plant and preparation method thereof

A technology of high temperature resistant and defoaming agent, which is applied in the field of desulfurization and defoaming agent of high temperature resistant body type power plant and its preparation, can solve the problems of not being able to continue defoaming for a long time, achieve the purpose of increasing the stability of emulsion, improving chemical stability, and promoting defoaming The effect of bubble activity

Active Publication Date: 2022-03-08
湖北隆胜四海新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it cannot defoam for a long time in an acid-base environment

Method used

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  • A kind of desulfurization and defoaming agent of high temperature resistant body type power plant and preparation method thereof
  • A kind of desulfurization and defoaming agent of high temperature resistant body type power plant and preparation method thereof
  • A kind of desulfurization and defoaming agent of high temperature resistant body type power plant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] S1: Take polyether polyol L61100g, L62100g, fatty acid is stearic acid 16.7g in a 500ml three-necked flask, gradually warm up to 70°C until the stearic acid is completely dissolved, add 0.67g p-toluenesulfonic acid as an acidic catalyst, Stir and keep the temperature at 130-160°C for 4-8 hours, and remove the reacted water under reduced pressure to obtain the reactant of polyether polyol and fatty acid ester;

[0031] S2: Take 100g of low-hydrogen silicone oil with a hydrogen content of 0.08%, and 30g of allyl polyether with a molecular weight of 350 in a 250ml three-necked flask, stir and heat up to 80°C, and after vacuuming out the water contained in the raw materials, add 5ppm Platinum catalyst isopropanol, heat up to 130°C, after the material turns from turbid to transparent, keep it warm for 3 hours, then remove low boiling point substances under reduced pressure, and cool down naturally to obtain adducts of low hydrogen-containing silicone oil and allyl polyether ...

Embodiment 2

[0034] S1: Take polyether polyols PPG600100g, PPG1000100g, fatty acid is stearic acid 84.2g in a 500ml three-neck flask, gradually warm up to 70 °C until the stearic acid is completely dissolved, add 2.1g p-toluenesulfonic acid as an acidic catalyst, in the kettle Stir and keep the temperature at 130-160°C for 4-8 hours, and remove the reacted water under reduced pressure to obtain the reactant of polyether polyol and fatty acid ester;

[0035] S2: Take 100g of low-hydrogen silicone oil with a hydrogen content of 0.2%, and 30g of allyl polyether with a molecular weight of 350 in a 250ml three-necked flask, stir and heat up to 120°C, and after vacuuming out the water contained in the raw materials, add 20ppm Platinum catalyst isopropanol, heat up to 130°C, after the material turns from turbid to transparent, keep it warm for 3 hours, then remove low boiling point substances under reduced pressure, and cool down naturally to obtain adducts of low hydrogen-containing silicone oil ...

Embodiment 3

[0038] S1: Take 200g of polyether polyol GPE and 57.1g of stearic acid as the fatty acid in a 500ml three-neck flask, gradually raise the temperature to 70°C until the stearic acid is completely dissolved, add 1.43g of p-toluenesulfonic acid as an acidic catalyst, and keep stirring in the kettle React at a temperature of 130-160°C for 4-8 hours, and remove the reacted water under reduced pressure to obtain the reactant of polyether polyol and fatty acid ester compound;

[0039] S2: Take 100g of low-hydrogen silicone oil with a hydrogen content of 0.1%, and 30g of allyl polyether with a molecular weight of 350 in a 250ml three-necked flask, stir and heat up to 100°C, and after vacuuming out the water contained in the raw materials, add 10ppm Platinum catalyst isopropanol, heat up to 130°C, after the material turns from turbid to transparent, keep it warm for 3 hours, then remove low boiling point substances under reduced pressure, and cool down naturally to obtain adducts of low...

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Abstract

The invention provides a high-temperature-resistant body-type desulfurization defoamer for power plants, which is an emulsion prepared by mixing after stepwise reaction, and contains the following components corresponding to the following parts by weight: polyether polyol reacted with fatty acid ester compound 50-80 parts of compound; 10-25 parts of low-hydrogen silicone oil and allyl polyether adduct; 1-5 parts of high-carbon alcohol; 2-10 parts of emulsifier; 1-3 parts of lauryl polymethicone share. Also provided is a method for preparing a desulfurization and defoaming agent for a high-temperature-resistant body-type power plant, including the following steps: S1: reacting to prepare polyether polyols and fatty acid esterified reactants; S2: reacting to prepare low-hydrogen-containing silicone oil and allyl polyether plus S3: Preparation of high temperature-resistant body-type desulfurization defoamer for power plants by mixing. The object of the present invention is to provide a high-temperature-resistant body-type power plant desulfurization defoamer with faster defoaming speed, longer foam suppression time and better effect and its preparation method.

Description

technical field [0001] The invention relates to the technical field of defoamers, in particular to a high-temperature-resistant body type desulfurization defoamer for power plants and a preparation method thereof. Background technique [0002] Due to historical, policy, technology, resource and other reasons, thermal power generation in my country accounts for more than 60%. Along with environmental protection factors, in order to better the living environment of human beings, the sulfur-containing flue gas caused by coal combustion in thermal power generation needs to be desulfurized. At present, the desulfurization agent mainly used in the desulfurization treatment of power plants is limestone slurry. During the desulfurization process, the slurry in the flue gas absorption tower will be caused by factors such as flue gas dust, oil content in flue gas, insufficient combustion, metal ions in the slurry, and water quality. Foam, foam not only affects the absorption rate of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D19/04
CPCB01D19/0404B01D19/0409
Inventor 杨伟耿学辉田坤杨帆杨开柱
Owner 湖北隆胜四海新材料有限公司
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