Separation, enrichment and determination of desulfurized organic components in flue gas desulfurization aqueous solution
A separation, enrichment and determination method technology, applied in the field of separation, enrichment and determination of desulfurized organic components in the flue gas desulfurization aqueous solution, can solve the problem of low content of desulfurized organic components, difficulty in accurately measuring the content of desulfurized organic components, and measurement time Long and other problems, to achieve good precision and accuracy, fast and convenient detection process
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example 1
[0033] Detection and analysis of precipitation in the absorption tower
[0034] Measure 100mL of absorption tower precipitation (hereinafter referred to as sample No. 1) into a distillation flask, add hydrochloric acid to adjust and control the pH of the solution to 1, evaporate in the open system at 100°C, and discard the evaporated water directly until the container Only 10mL of solution remains in the solution; cool to 60°C and add sodium hydroxide to adjust the solution to PH = 10, connect a rotary evaporator and conduct the first distillation at 200°C and condense to collect fractions until thick white smoke no longer occurs in the evaporation vessel After cooling to 80°C, wash the bottle wall and inorganic salts with 5mL of water, reconnect the rotary evaporator for a second distillation at 300°C and combine and condense to collect fractions until thick white smoke no longer occurs in the container.
[0035] The collected fractions are the organic components to be test...
example 2
[0037] Detection and analysis of condensed water in the absorption tower
[0038] Measure 500mL of condensed water from the absorption tower (hereinafter referred to as sample No. 2), add hydrochloric acid to adjust the pH=3, evaporate the water at 180°C until only 25mL of solution remains in the container; cool to 80°C and add potassium hydroxide to adjust the pH= 12. Connect the rotary evaporator to distill for the first time at 300°C and condense to collect the distillate until the thick white smoke is no longer produced in the evaporation container, then cool to 80°C, wash the bottle wall and inorganic salts with 10mL water, and reconnect the rotary evaporator The vessel was distilled for the second time at 350°C and the fractions were combined and condensed to collect until the dense white fume was no longer produced in the vessel. In addition, according to the same method as in Example 1, concentrate and enrich, distill and separate the condensed water in the absorptio...
example 3
[0040] Detection and analysis of washing water
[0041]Measure 250mL of washing water (hereinafter referred to as sample No. 3), add nitric acid to adjust pH = 2, evaporate and remove water at 150°C until only 15mL solution remains in the container; cool to 70°C and add sodium hydroxide to adjust pH = 11, Connect the rotary evaporator to distill for the first time at 250°C and condense to collect the distillate until no thick white smoke is produced in the evaporation vessel, then cool to 80°C, wash the bottle wall and inorganic salts with 10mL water, and reconnect the rotary evaporator Distill for the second time at 320°C and combine and condense the collected fractions until thick white smoke no longer occurs in the container. In addition, according to the same method as the method of Example 1, concentrate and enrich, distill and separate the washing water, and detect the fractions by GC-MS.
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