Absorbing liquid for eliminating sulfide from gas mixture
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for gas mixtures and absorbing liquids, which is used in the preparation/purification of sulfur, chemical instruments and methods, separation methods, etc.
Inactive Publication Date: 2003-06-04
江苏蓝电环保股份有限公司
View PDF12 Cites 67 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0008] None of the above methods can remove organic sulfur and inorganic sulfur at the same time with amine solution, so it is necessary to add other desulfurization devices
Method used
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
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 2
[0016] Composition of absorption liquid: main absorbent hindered amine (I) 25%, MDEA (II) 15%, cosolvent (III) formyl morpholine, etc. 5%, catalyst (IV) monoethanolamine, etc. 3%, raw material gas composition: N 2 72.1%, CO 2 23.3%, H 2 S 3.6%, sulfide 538mg / m 3 . At 40°C monoethanolamine is absorbed under normal pressure, and the removal rate of sulfide is 76.8%. Implementation example three:
Embodiment 3
[0017] The composition of the absorption liquid: 15% of the main absorbent hindered amine (I), 40% of MDEA (II), 5% of the cosolvent (III) N-methylpyrrolidone, etc., 3% of the catalyst (IV) piperazine, etc., and the raw material gas is Semi-water gas (N 2 21.8%, CO 2 8.0%, CO 28.5%, H 2 40.0%, O 2 0.4%, CH 4 1.3%, COS 136mg / m 3 ), 0.5MPa absorption, tower top temperature 40°C, COS removal rate: 95.2%. Implementation example four:
Embodiment 4
[0018] The absorption liquid is: main absorbent hindered amine (I) 5%, MDEA (II) 15%, cosolvent (III) sulfolane 10%, catalyst (IV) diethanolamine, etc. 5%, raw material gas adopts shift gas (N 2 16.98%, CO 2 28.43%, CO 1.20%, H 2 52.38%, CH 4 1.01%), mixed with mercaptan 2132mg / m 3 , 0.5MPa absorption, tower top temperature 40°C, mercaptan removal rate: 71.2%.
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
PUM
Login to view more
Abstract
The present invention belongs to gas producing technology. The absorbing liquid for eliminating sulfide from gas mixture includes main absorbent comprising steric hindrance amine and N-methyl diethanolamine; cosolvent of one or several of sulfolane, N-methyl pyrrolidine, polyglycol dialkyl ether, morpholine and its derivative; catalyst of one or several of C2-C12 alkanolamine, piperazine and its derivative, quinoline, urea and metal phthalocyanine complex. Using the absorbing liquid can eliminate H2S, COS, mercaptan, thioether and other sulfide in less steps.
Description
technical field [0001] The invention belongs to the technical field of gas purification, in particular to removing H from gas mixtures 2 S, COS, mercaptan, sulfide and other sulfide absorption liquid. Background technique [0002] Process gas streams such as natural gas, refinery gas, and synthesis gas often contain H 2 S, COS, mercaptans, sulfides and other sulfides must be removed before further utilization. The alkanolamine method is the removal of H 2 The most commonly used method for acid gas impurities such as S. Such as; US4,551,158; US4,553,984; US4,537,753; CA1291321; CA1295810; DE1904428; However, the above methods cannot effectively remove organic sulfur. [0003] US3,716,620 proposes adding iodine in amine solution to remove H 2 S and thiols. [0004] US4,808,765 proposes to remove H in the feed gas with MDEA and diisopropanolamine (DIPA) mixed solution 2 S and COS. [0005] US5,589,149 proposes to use a mixed solution of a...
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
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more