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Product description
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I. Category Name
Special Desulphurization Defoamer XPC-20A
II. The company has developed XPC-20A products aiming at the field of thermal power generation, and it is applied to the flue gas desulfurization production process, has the application and purpose as followed.
At present, most of thermal power plants adopt the wet desulphurization in China, but slurry of absorption column may generate foams as a result of the following factors when desulphurization device runs, causing the overflow of the absorption column.
1. High-speed reverse mixing of gas and liquid in absorption column.
2. Inlet flue gas dust exceeds standards, containing a great quantity of impurities of inert substances.
3. Poor coal quality, inadequate combustion of boiler or flue gas with oil caused by filling oil into boiler.
4. More heavy metal ions in slurry of absorption column, causing increase of surface strain of slurry.
5. Limestone contains more MgO, not only affecting desulphurization efficiency, but also reacting with sulfate ions.
Foams of slurry in the absorption column caused by the factors the above may lead to losses of a great quantity of neutral substances and cooling water, obviously reduce reaction speed and product recovery at the same time, and further affect the operation process and the desulfurization efficiency. Meanwhile, the serious overflowing of foams pollutes field environment, and brings great safety hidden danger and power loss for the motor room under cooling tower.
After using defoamer, the application efficiency of cooling water and absorbent in desulfurizing tower can be effectively improved, and the starting frequency and opening quantity of circulating pump can be reduced obviously, the output of sulfate is greatly increased, the labor maintenance cost in situ can be reduced, and the comprehensive benefits is greatly improved.
Because desulfurizer is needed in the flue gas desulphurization of thermal power plant, the desulfurizer is limestone or limestone slurry. Through foam tests in practice and laboratories, it showed that common defoamer has no obvious defoaming effect to foams caused by slurry of the absorption column in desulphurization device, and has different performances in different actual environments. In use, the defoamer should be tested comprehensively to realize the optimum efficiency.
III. Application of Defoamer in Seawater Circulating Water
In the production process using sea water as circulating water, because sea water contains a great quantity of shellfish and seaweeds which can fast reproduce under appropriate ambient temperature in the circulating process of water, causing blocking of pipelines. When mixing with chlorine, circulating water can generate hypochlorous acid to kill shellfish, and rotten spoils can cause a great quantity of foams to continuously generate in the presence of severe impact, thereby resulting in marine pollution. Our XPC-20B product can effectively remove foams, so as to enable pollutants to settle effectively, and avoid pollution.
The application of defoamer in the thermal power plants can effectively reduce the environmental pollution.
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