Copper salt absorption liquid for desorbing arsenic hydride from ethane and propene in gas phase and application thereof

An arsine and absorbing liquid technology, applied in absorption purification/separation, organic chemistry, material separation, etc., can solve the problems of imperfect monitoring system, loss of purification production equipment, unsatisfactory dearsenic removal efficiency, etc., and achieve the cost of use Low, easy-to-obtain, high-sensitivity effects
CN102311301AActive Publication Date: 2012-01-11CHINA PETROLEUM & CHEM CORP +1
4 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2012-01-11

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a copper salt absorption liquid for desorbing arsenic hydride from ethane and propene in gas phase and an online monitoring system. The absorption liquid is composed of the mixed liquid of bromine water, hydrogen peroxide, copper salt and inorganic acid. The online monitoring system comprises a sampling system, a gas-phase chromatographic separation system and a mass spectrum analysis system, wherein a six-way valve of the sampling system is used for sampling continuously; and the gas-phase chromatographic separation system is used for separating the arsenic hydride from the ethane and the propene, and then the mass spectrum analysis system is used for monitoring quantitatively. The absorption liquid provided by the invention has the advantages of simple ingredient and low cost. The arsenic hydride in the ethane and the propene can be desorbed to a content of smaller than 30ppb. The online monitoring system has the advantages of high sensitivity, low limit of detection and capability of rapidly reflecting the absorbing and purifying effect of the absorption liquid.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a solution for purifying arsine gas in gaseous ethylene and propylene through a catalytic oxidation method, and monitors the purification effect of the absorption solution through an online monitoring system to ensure that the content of arsine after purification is less than 30ppb. Background technique

[0002] Ethylene and propylene gas are raw material gases for the production of polyolefins, so the performance of polyethylene and polypropylene depends on the polymerization process and also on the purity of raw materials and impurity content. Arsenide is a typical polyolefin catalyst poison. Many catalysts used in industry are very sensitive to arsenide. A very small amount (a few tenths of a million) of arsenide can poison and deactivate the catalyst. Changes in domestic refinery crude oil, improvements in deep processing technology, and continuous improvement in processing capacity have resulted in the presence of arsenic ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More