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Ethylene adsorbent, preparation method and applications thereof

An ethylene adsorbent and the technology of the adsorbent, which are applied in the chemical field, can solve the problems of toxic formaldehyde vapor gas and the like, and achieve the effects of low price, high adsorption capacity and simple preparation method.

Inactive Publication Date: 2020-01-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is novel and unique, but the steam-induced reduction process requires high temperature and high pressure conditions and produces toxic formaldehyde vapor gas

Method used

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  • Ethylene adsorbent, preparation method and applications thereof
  • Ethylene adsorbent, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] First, 25g SAPO-34 molecular sieve and 7.5g CuCl were ground for 5h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate is 200ml / min, and the adsorbent is obtained by roasting at 400°C for 4h. At 25°C, the ethylene gas pressure is 1bar. The / ethane separation ratio was 1.22.

Embodiment 2

[0069] Firstly, 25g SAPO-34 molecular sieve and 15g CuCl were ground for 12h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate is 200ml / min, and the adsorbent is obtained by roasting at 375°C for 4 hours. At 25°C, the ethylene gas pressure is 1bar. / ethane separation ratio was 1.94.

Embodiment 3

[0071] Firstly, 25g SAPO-34 molecular sieve and 15g CuCl were ground for 12h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate is 200ml / min, and the adsorbent is obtained by roasting at 400°C for 4h. At 25°C, the ethylene gas pressure is 1bar. / ethane separation ratio was 2.36.

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Abstract

The invention discloses an ethylene adsorbent, a preparation method and applications thereof, wherein the ethylene adsorbent comprises a carrier and a cuprous compound, and the carrier is a silicoaluminophosphate molecular sieve. According to the invention, the adsorbent is simple in preparation process and high in adsorption capacity, and has good industrial application prospect.

Description

technical field [0001] The application relates to an ethylene adsorbent and its preparation method and application, belonging to the field of chemistry. Background technique [0002] Ethylene is the most important basic petrochemical raw material, and its output and technical level indicate the development level of a country's petrochemical industry. The separation of ethylene / ethane plays an important role in the petrochemical and chemical industries, usually by low-temperature rectification, but rectification consumes a lot of energy, so researchers have been committed to finding more efficient, energy-saving, and low-cost methods. Research on new ethylene / ethane separation technology, among which π-complex adsorption separation technology, as a new separation method between physical adsorption and chemical adsorption, has a good application prospect and has attracted extensive attention from researchers. The π complex adsorption separation method utilizes the characteris...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/30B01D53/02
CPCB01D53/02B01D2257/7022B01J20/0237B01J20/18
Inventor 吴雅琪徐云鹏刘中民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI