Monitoring and controlling the hydrogen conductivity of water supply, condensate and steam is one of the important means to ensure the quality of water vapor and control the corrosion and scaling of the steam system in thermal power plants.
Due to the concentration of ammonia in the water vapor, the sampling flow rate often changes, plus the unit start and stop, it is difficult to determine when the hydrogen-type exchange column failure, the initial failure of the hydrogen-type exchange column, due to the penetration of a small amount of ammonium ions, the hydrogen conductivity measurement The value is low; when the hydrogen exchange column completely fails, a large amount of ammonium ions pass through, and the measured value of hydrogen conductivity is high. Therefore, when the change in hydrogen conductivity is caused after the exchange column fails, it is difficult for the operator to judge whether the water vapor quality deteriorates or the exchange column fails. The use of a color change cation exchange resin can completely solve this problem. Because the color of the failure layer and the non-failure layer is obviously different, the operator can easily determine the failure degree of the exchange column by directly observing the change of the color of the resin, and can be used before the failure of the hydrogen exchange column. Regeneration treatment in time can promptly identify water quality deterioration problems and take timely solutions to avoid the blindness of replacing the resin, improve the efficiency of the use of the resin, reduce the operating intensity of the operation and maintenance personnel, and also ensure the reliable monitoring of hydrogen conductivity. Sex and effectiveness.
IND90 color-changing resin (indicator resin) is a strongly acidic cation exchange resin loaded with an indicator. The factory model is a hydrogen type. It can perform ion exchange reactions with cations in water, and can also follow the change of its own ion type. Showing obvious color change characteristics. IND90 is a brownish-yellow (with light green) color-regenerating resin-regenerating (H-type) and rose-red when it is a failure (Na-type). The color difference is very obvious. IND90-type color-changing resin is mainly used in the sampling of chemical soda to determine the hydrogen conductivity of mixed-bed effluent from steam and condensate finishing in thermal power plants. It is an intuitive and effective complement to the on-line detection instrument. Before the color-changing resin column is installed on the hydrogen conductivity meter, the free ammonia in the condensed water can be removed after the water sample passes, and all the cations in the water are converted into hydrogen ions with higher conductivity. Greatly improves the sensitivity of monitoring ions in water. At the same time, the resin becomes rose red when it fails, clearly indicating the working state of the exchange column. Can also be used in laboratory, food, medicine and electronic instruments and other small-diameter transparent exchange column installed in a small pure water system, determine the regeneration timing through the color change after resin failure.
Due to the concentration of ammonia in the water vapor, the sampling flow rate often changes, plus the unit start and stop, it is difficult to determine when the hydrogen-type exchange column failure, the initial failure of the hydrogen-type exchange column, due to the penetration of a small amount of ammonium ions, the hydrogen conductivity measurement The value is low; when the hydrogen exchange column completely fails, a large amount of ammonium ions pass through, and the measured value of hydrogen conductivity is high. Therefore, when the change in hydrogen conductivity is caused after the exchange column fails, it is difficult for the operator to judge whether the water vapor quality deteriorates or the exchange column fails. The use of a color change cation exchange resin can completely solve this problem. Because the color of the failure layer and the non-failure layer is obviously different, the operator can easily determine the failure degree of the exchange column by directly observing the change of the color of the resin, and can be used before the failure of the hydrogen exchange column. Regeneration treatment in time can promptly identify water quality deterioration problems and take timely solutions to avoid the blindness of replacing the resin, improve the efficiency of the use of the resin, reduce the operating intensity of the operation and maintenance personnel, and also ensure the reliable monitoring of hydrogen conductivity. Sex and effectiveness.
IND90 color-changing resin (indicator resin) is a strongly acidic cation exchange resin loaded with an indicator. The factory model is a hydrogen type. It can perform ion exchange reactions with cations in water, and can also follow the change of its own ion type. Showing obvious color change characteristics. IND90 is a brownish-yellow (with light green) color-regenerating resin-regenerating (H-type) and rose-red when it is a failure (Na-type). The color difference is very obvious. IND90-type color-changing resin is mainly used in the sampling of chemical soda to determine the hydrogen conductivity of mixed-bed effluent from steam and condensate finishing in thermal power plants. It is an intuitive and effective complement to the on-line detection instrument. Before the color-changing resin column is installed on the hydrogen conductivity meter, the free ammonia in the condensed water can be removed after the water sample passes, and all the cations in the water are converted into hydrogen ions with higher conductivity. Greatly improves the sensitivity of monitoring ions in water. At the same time, the resin becomes rose red when it fails, clearly indicating the working state of the exchange column. Can also be used in laboratory, food, medicine and electronic instruments and other small-diameter transparent exchange column installed in a small pure water system, determine the regeneration timing through the color change after resin failure.
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