Based on variable pressure temperature swing adsorption technology and efficient adsorbent tower more than two pieces of low pressure vacuum adsorption stripping process and equipment, the breakthrough in the domestic petrochemical polypropylene, polyethylene device from C2 ~ C6 efficient recovery of low concentration gas. The recovery and reuse of effective components in the emission gas of polyethylene and polypropylene are greater than 96% and the economic and social benefits are remarkable. Sinopec listed as a key environmental governance and synergistic project.

This technology can't fundamentally solve the low concentration mixed light hydrocarbon component recycling technical problems at the same time, let the past can only go to the torch burning a mixture of light hydrocarbon components back to effectively utilize again processing equipment.