If there is water vapor in biogas, the use efficiency will be greatly reduced. There are three methods commonly used by biogas purifiers to extract saturated water vapor from fermentation plants.
Cold separation is a method of condensing water vapor from the vapor phase by using the temperature change caused by the change of pressure energy. There are two commonly used processes: A. Throttle expansion cold dehydration method. B. Pressure cooling method.
(2)溶剂吸收法
(2) Solvent absorption method
属于这类脱水溶剂的有氯化钙、氯化锂及甘醇类。
Calcium chloride, lithium chloride and glycol are the dehydration solvents.
Adsorption is produced under the action of solid surface force. According to the nature of surface force, it can be divided into chemical adsorption and physical adsorption (which can be regenerated after dehydration).
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2019-07-29
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