Method for measuring content of calcium sulfate in desulfurized gypsum of coal-fired power plant
A technology for desulfurized gypsum and coal-fired power plants, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve problems such as titration errors, and achieve simple operation steps and testing process. Efficient and fast, drug consumption and low cost effect
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reference example 1
[0047] The preparation method of the hydrogen type cation exchange resin is as follows: add a sodium chloride solution with a mass concentration of 8% to the 004×7 type strong acid cation exchange resin, soak for 30 hours, wash with desalted water until the washing water is colorless, filter, and then add Sodium hydroxide solution with a mass concentration of 3%, soak for 2 hours, wash with desalted water until the washing water is neutral, filter, and finally add hydrochloric acid solution with a mass concentration of 6%, soak for 2 hours, wash with desalted water until the washing water is neutral, The hydrogen form cation exchange resin 1 was obtained, and the measured pH value was 2.7.
reference example 2
[0049] The preparation method of the hydrogen-type cation exchange resin is as follows: add a sodium chloride solution with a mass concentration of 10% to the 001×7 type strong acid cation-exchange resin, soak for 24 hours, wash with desalted water until the washing water is colorless, filter, and then add Sodium hydroxide solution with a mass concentration of 2%, soak for 3 hours, wash with desalted water until the washing water is neutral, filter, and finally add hydrochloric acid solution with a mass concentration of 5%, soak for 3 hours, wash with desalted water until the washing water is neutral, The hydrogen form cation exchange resin 2 was obtained, and the measured pH value was 2.8.
reference example 3
[0051] The preparation method of the hydrogen type cation exchange resin is as follows: add a sodium chloride solution with a mass concentration of 12% to the 002SC type strongly acidic cation exchange resin, soak for 20 hours, wash with desalted water until the cleaning water is colorless, filter, and then add a mass concentration of 1% sodium hydroxide solution, soak for 4 hours, wash with desalinated water until the washing water is neutral, filter, and finally add hydrochloric acid solution with a mass concentration of 4%, soak for 4 hours, wash with desalinated water until the washing water is neutral, and obtain hydrogen Type cation exchange resin 3, the measured pH value is 2.9.
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