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Process for the treatment of activated charcoal-based adsorbent contaminated by hydrogen chloride, elemental mercury and its compounds
Process for the treatment of activated charcoal-based adsorbent contaminated by hydrogen chloride, elemental mercury and its compounds
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机译:处理受氯化氢,元素汞及其化合物污染的活性炭基吸附剂的方法
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摘要
The process is based on that on the active carbon of the mercury-contaminated adsorbent the desorption of the salt acid from the active carbon of the adsorbent runs under the temperature 100 to 150 °C under the atmospheric pressure in the inert atmosphere of nitrogen. Relevant is, that the dry distillation runs under the temperature 250 to 300 °C and pressure of 0.02 to 0.035 Mpa in the inert atmosphere of the nitrogen with consequential condensation by de-mercurization of the occurred mercury vapours and mercuric chloride. At the beginning of the treatment it is possible to neutralise the contaminated active carbon by adding the calcium oxide with 5 % excess of the calculated molar ratio to the contents of the hydrogen chloride.
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