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National High-tech Enterprise; Sichuan Provincial Enterprise Technology Center; Class B qualification for chemical engineering design; Class A qualification for environmental pollution prevention and control; Pressure pipeline GC1 design qualification
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Shandong Dongfang Hongye Chemical Co., Ltd. 1200Nm3/h carbon four cracking tail gas recovery and utilization project
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Shandong Dongfang Hongye Chemical Co., Ltd. 1200Nm3/h carbon four cracking tail gas recovery and utilization project

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Project Description
 
PSA Hydrogen Extraction Unit General Contracting
 
PSA Ethylene Extraction Plant General Contracting
 
 
 
Scale
 
1200Nm3/h PSA Hydrogen Extraction Unit from C4 Cracking Tail Gas
 
1200Nm3/h PSA Ethylene Extraction Unit from C4 Cracking Tail Gas
 
 
 
Technical index
 
Processing gas volume: 1200Nm3/h;
 
Cracking tail gas composition: 53% H2, 10% CH4, 8% C2H6, 26% C2H4 and a small amount of propane, propylene, carbon four and other substances
 
System operating pressure: 1.2MPa
 
Ethylene content in purified ethylene gas: ≥93%
 
Ethylene + propylene content in purified ethylene gas: ≥95%,
 
Ethylene + propylene recovery rate: ≥90%
 
Product hydrogen content: ≥99.99%
 
Hydrogen recovery rate: ≥85%
 
 
 
Technical characteristics
 
1. The new type of special adsorbent has a large separation factor for olefins, alkanes, nitrogen and other gases, and the recovered olefins and alkanes have high purity and yield;
 
2. As a pioneer in applying pressure swing adsorption devices to this field, we have gained experience while overcoming difficulties and established our advantages. We have passed the appraisal of the Urumqi Science and Technology Commission and the acceptance of the technology of the Daqing Petrochemical pilot plant by PetroChina. The technology is at the international leading level:
 
3. Adopting the principle of pressure swing adsorption, the device operates at room temperature, with low energy consumption, high degree of automation and simple process.
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