Research on Biogas Purification

The non-power consuming option for liquid air separation plants can be used for full liquid air separation plants，where the produced liquid is sold off. This approach is currently available for most LNG receiving stations. For air separation units with a large cold capacity, the liquid air can be pressurised to 6baA in a vacuum storage tank, and then heat exchanged through a heat exchanger, instead of the air compressor, directly into the cold box for distillation. At the same time in the cold b...

1, gas welding of purple copper plate: welding purple copper plate is most commonly used for butt joints, lap joints and ding joints are used as little as possible. Gas welding can be used in two kinds of welding wire, one containing deoxidizing elements, such as wire 201, 202; the other is the general purple copper wire and the cutting strip of the parent material, using gas 301 as flux. Gas welding purple copper should be used when the neutral flame. 2, manual arc welding of purple copper: in...