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The anticorrosive coating for the inner wall of the chimney has excellent corrosion resistance

The anticorrosive coating for the inner wall of the chimney has excellent corrosion resistance

  • Categories:Industry News
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  • Time of issue:2020-08-03
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(Summary description)At present, the gypsum-limestone wet desulfurization process is commonly used in China. Generally, there is no flue gas heating system device. This desulfurization process has a high removal rate of SO2 in the flue gas, which can reach more than 95%, but it is harmful to smoke. The SO3 removal rate of the main component of gas corrosion is only about 20%. The temperature of the flue gas after wet desulfurization is about 40℃~50℃, and the chimney operates under positive pressure. The flue gas has high water content. The residual SO2, SO3, HF and other acid gases in the flue gas are easy to condense in the chimney. Acidic condensate will cause severe corrosion to the chimney. The flue gas after wet desulfurization is a kind of low temperature and high humidity dilute acid with high corrosion strength, strong permeability, and difficult to prevent. According to the evaluation of the corrosion performance of flue gas after desulfurization by the International Industrial Chimney Association, the flue gas after wet desulfurization The flue gas belongs to the level of highly corrosive flue gas. The chimney should be designed for structural safety according to the highly corrosive flue gas, and the inner wall of the chimney must be treated with anticorrosion.

The chimney lining anticorrosive material needs to have the following performance characteristics to ensure the safe operation of the entire power plant and the safety of the chimney itself. It has very good adhesion to the base material and excellent chemical resistance, especially the 1041 anticorrosive coating is acid-resistant It has excellent flexibility, resistance to inevitable vibration of steel chimneys, and excellent high temperature resistance and temperature resistance. It should be able to meet the long-term fluctuation of the working temperature between 45-160℃ and the short-term operating temperature of 480℃.

Based on years of field observation and research on the corrosion characteristics of flue, chimney, desulfurization and dust removal equipment, tens of thousands of times of anti-corrosion simulation experiment research and development, and a large number of scientific and technological applications, Beijing Zhisheng Weihua Chemical Co., Ltd. relies on its own technical strength and combines many years with domestic large-scale power plants Based on the practical experience of cooperation with steel mills, cement plants, and smelters, we have successfully developed Weihua ZS-1041 flue gas anticorrosive coating to prevent corrosion of chimney flue condensate water. This Weihua 1041 anticorrosive coating is different from the traditional anticorrosive materials of polyurea, foam glass bricks, glass flakes, OM coating or mortar. It has high temperature resistance, light coating, waterproof and anti-seepage, acid and alkali resistance, thermal expansion and cold resistance. Good shrinkage performance, strong adhesion, long service life, good durability, damaged coating can be directly repaired conveniently. 1. Zhisheng flue gas anticorrosive coating has excellent resistance to chemical corrosion, especially condensed sulfuric acid corrosion; 2. ZS-1041 Weihua flue gas anticorrosive coating has very high resistance to water vapor penetration; 3. ZS -1041 flue gas anticorrosive paint coating has excellent high temperature resistance and rapid temperature change performance, which can meet the long-term operating temperature fluctuation between 45600℃, short-term operating temperature 800℃, and protection action temperature 850℃; 4. ZS-1041 The coating of flue gas anticorrosive coating also has high resistance to flexure and thermal expansion resistance, and can resist the inevitable vibration of the steel chimney although it has been reinforced; 5. ZS-1041 flue gas anticorrosive coating and steel substrate It has very good adhesion, and the anti-corrosion coating is heat-resistant, shock-resistant and wear-resistant.

The anticorrosive coating for the inner wall of the chimney has excellent corrosion resistance

(Summary description)At present, the gypsum-limestone wet desulfurization process is commonly used in China. Generally, there is no flue gas heating system device. This desulfurization process has a high removal rate of SO2 in the flue gas, which can reach more than 95%, but it is harmful to smoke. The SO3 removal rate of the main component of gas corrosion is only about 20%. The temperature of the flue gas after wet desulfurization is about 40℃~50℃, and the chimney operates under positive pressure. The flue gas has high water content. The residual SO2, SO3, HF and other acid gases in the flue gas are easy to condense in the chimney. Acidic condensate will cause severe corrosion to the chimney. The flue gas after wet desulfurization is a kind of low temperature and high humidity dilute acid with high corrosion strength, strong permeability, and difficult to prevent. According to the evaluation of the corrosion performance of flue gas after desulfurization by the International Industrial Chimney Association, the flue gas after wet desulfurization The flue gas belongs to the level of highly corrosive flue gas. The chimney should be designed for structural safety according to the highly corrosive flue gas, and the inner wall of the chimney must be treated with anticorrosion.

The chimney lining anticorrosive material needs to have the following performance characteristics to ensure the safe operation of the entire power plant and the safety of the chimney itself. It has very good adhesion to the base material and excellent chemical resistance, especially the 1041 anticorrosive coating is acid-resistant It has excellent flexibility, resistance to inevitable vibration of steel chimneys, and excellent high temperature resistance and temperature resistance. It should be able to meet the long-term fluctuation of the working temperature between 45-160℃ and the short-term operating temperature of 480℃.

Based on years of field observation and research on the corrosion characteristics of flue, chimney, desulfurization and dust removal equipment, tens of thousands of times of anti-corrosion simulation experiment research and development, and a large number of scientific and technological applications, Beijing Zhisheng Weihua Chemical Co., Ltd. relies on its own technical strength and combines many years with domestic large-scale power plants Based on the practical experience of cooperation with steel mills, cement plants, and smelters, we have successfully developed Weihua ZS-1041 flue gas anticorrosive coating to prevent corrosion of chimney flue condensate water. This Weihua 1041 anticorrosive coating is different from the traditional anticorrosive materials of polyurea, foam glass bricks, glass flakes, OM coating or mortar. It has high temperature resistance, light coating, waterproof and anti-seepage, acid and alkali resistance, thermal expansion and cold resistance. Good shrinkage performance, strong adhesion, long service life, good durability, damaged coating can be directly repaired conveniently. 1. Zhisheng flue gas anticorrosive coating has excellent resistance to chemical corrosion, especially condensed sulfuric acid corrosion; 2. ZS-1041 Weihua flue gas anticorrosive coating has very high resistance to water vapor penetration; 3. ZS -1041 flue gas anticorrosive paint coating has excellent high temperature resistance and rapid temperature change performance, which can meet the long-term operating temperature fluctuation between 45600℃, short-term operating temperature 800℃, and protection action temperature 850℃; 4. ZS-1041 The coating of flue gas anticorrosive coating also has high resistance to flexure and thermal expansion resistance, and can resist the inevitable vibration of the steel chimney although it has been reinforced; 5. ZS-1041 flue gas anticorrosive coating and steel substrate It has very good adhesion, and the anti-corrosion coating is heat-resistant, shock-resistant and wear-resistant.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-08-03
  • Views:0
Information

At present, the gypsum-limestone wet desulfurization process is commonly used in China. Generally, there is no flue gas heating system device. This desulfurization process has a high removal rate of SO2 in the flue gas, which can reach more than 95%, but it is harmful to smoke. The SO3 removal rate of the main component of gas corrosion is only about 20%. The temperature of the flue gas after wet desulfurization is about 40℃~50℃, and the chimney operates under positive pressure.And the flue gas has high water content. The residual SO2, SO3, HF and other acid gases in the flue gas are easy to condense in the chimney. Acidic condensate will cause severe corrosion to the chimney. The flue gas after wet desulfurization is a kind of low temperature and high humidity dilute acid with high corrosion strength, strong permeability, and difficult to prevent. According to the evaluation of the corrosion performance of flue gas after desulfurization by the International Industrial Chimney Association, the flue gas after wet desulfurization The flue gas belongs to the level of highly corrosive flue gas. The chimney should be designed for structural safety according to the highly corrosive flue gas, and the inner wall of the chimney must be treated with anticorrosion.

The chimney lining anticorrosive material needs to have the following performance characteristics to ensure the safe operation of the entire power plant and the safety of the chimney itself. It has very good adhesion to the base material and excellent chemical resistance, especially the 1041 anticorrosive coating is acid-resistant It has excellent flexibility, resistance to inevitable vibration of steel chimneys, and excellent high temperature resistance and temperature resistance. It should be able to meet the long-term fluctuation of the working temperature between 45-160℃ and the short-term operating temperature of 480℃.

Based on years of field observation and research on the corrosion characteristics of flue, chimney, desulfurization and dust removal equipment, tens of thousands of times of anti-corrosion simulation experiment research and development, and a large number of scientific and technological applications, Beijing Zhisheng Weihua Chemical Co., Ltd. relies on its own technical strength and combines many years with domestic large-scale power plants Based on the practical experience of cooperation with steel mills, cement plants, and smelters, we have successfully developed Weihua ZS-1041 flue gas anticorrosive coating to prevent corrosion of chimney flue condensate water. This Weihua 1041 anticorrosive coating is different from the traditional anticorrosive materials of polyurea, foam glass bricks, glass flakes, OM coating or mortar. It has high temperature resistance, light coating, waterproof and anti-seepage, acid and alkali resistance, thermal expansion and cold resistance. Good shrinkage performance, strong adhesion, long service life, good durability, damaged coating can be directly repaired conveniently. 1. Zhisheng flue gas anticorrosive coating has excellent resistance to chemical corrosion, especially condensed sulfuric acid corrosion; 2. ZS-1041 Weihua flue gas anticorrosive coating has very high resistance to water vapor penetration; 3. ZS -1041 flue gas anticorrosive paint coating has excellent high temperature resistance and rapid temperature change performance, which can meet the long-term operating temperature fluctuation between 45600℃, short-term operating temperature 800℃, and protection action temperature 850℃; 4. ZS-1041 The coating of flue gas anticorrosive coating also has high resistance to flexure and thermal expansion resistance, and can resist the inevitable vibration of the steel chimney although it has been reinforced; 5. ZS-1041 flue gas anticorrosive coating and steel substrate It has very good adhesion, and the anti-corrosion coating is heat-resistant, shock-resistant and wear-resistant. 

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