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Policy support for biogas purification

Policy support for biogas purification
Untreated biogas has high methane content and low purification cost. This is mainly due to the increase of energy production, and the total cost is related to higher energy level. The cost can be reduced by improving efficiency (reducing energy consumption per unit output) and using raw biogas with high calorific value to reduce actual energy consumption.
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Jun 10, 2025
DEAR Air Separation Focuses on Employee Growth with Successful Strategic Training
Apr 10, 2025
DEAR Air Separation Collaborates with Xi'an Jiaotong University and Xi'an University of Posts & Telecommunications to Advance Intelligent Air Separati
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Selective adsorption of molecular sieves in small air separation unit The molecular sieve selectively adsorbs molecules according to their different properties in liquid air separation plant. According to the size of the molecules, the molecules smaller than their pore size are selected for adsorption; for molecules of similar size, according to the polarity of the molecules, the more polar molecules are selected for preferential adsorption; according to the saturation of the molecules, the lar...
Sep 12, 2025
The air is mainly composed of 78.03% nitrogen and 20.93% oxygen and other gases. Air separation is to cool the air to a certain low temperature firstly and liquefy it into liquid air. Reuse two liquids oxygen and nitrogen with different boiling points (At atmospheric pressure, the boiling point of oxygen is - 183.98°C and that of nitrogen is - 195.8°C), separation is carried out in an air fractionator equipped with sieve plates. The air separation column is also called distillation column. Air distillation column can be divided into single-stage distillation column and double-stage distillation column, and single-stage distillation column can only produce one kind of pure product. Two stage distillation column is used to produce high purity nitrogen and oxygen in common air separation unit.
Sep 08, 2025
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