1. Refinery dry gas recovery of ethylene

 

At present, the total amount of dry gas in my country’s refineries is about 10 million tons/year, which contains about 2 million tons/year of ethylene. Due to its low content, the cost of recycling ethylene is high. Previously, there was no low-consumption and high-efficiency recycling method, which is usually cheap. Burning of fuel. If low-consumption and high-efficiency recovery of the corresponding ethylene components can be used, and ethylene is used as a raw material for downstream chemical products, 6-10 million tons of crude oil consumed for the production of ethylene can be saved every year.

 

After years of research, our company has developed a special adsorbent for ethylene, using a low-consumption and high-efficiency pressure swing adsorption method, which can fully recover ethylene under the condition that the ethylene content in the dry gas of the refinery is 8-10%. The concentration of ethylene is more than 90%, and the recovery rate of ethylene is more than 90%. Our company's technology has passed the technical appraisal of the Urumqi Science and Technology Commission, and is at the leading level in the world.

 

 

 

2. Catalytic dry gas recovery of ethylene raw materials

 

It is also catalytic dry gas. Another technical solution can be used to recover the C2 and C3 components (ethylene feedstock for short) in the dry gas so that the water content is less than 1ppm, the sulfide is less than 1ppm, and the carbon dioxide is less than 1ppm. Raw gas for the production of ethylene.

 

At present, this type of device developed by our company not only guarantees that the purity of the ethylene raw material recovered in the catalytic dry gas exceeds 90%, but the yield also exceeds 90%, even reaching 95%, which is higher than other existing devices, and its purity and yield Both are more than 20% higher, and the efficiency of the device is more than 50% higher. It can provide ethylene production raw materials for oil refining units with ethylene plants, reduce oil consumption, increase enterprise production costs, reduce carbon emissions, and protect the environment.

 

The technology is at the leading level in China, and it has been put into use in Daqing Oilfield, and has passed the acceptance by experts organized by China National Petroleum Corporation.