High-purity and high-recovery hydrogen purifying method and realizing device
A technology with high recovery rate and purification method, applied in the field of hydrogen purification, can solve the problems of waste of resources, reduce one-time investment, and low yield of product hydrogen, and achieve the effects of reducing scale, improving methane yield and low cost
Active Publication Date: 2014-04-30
SICHUAN TECHAIRS
View PDF3 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
For a long time, due to the characteristics of pressure swing adsorption (PSA), the yield of product hydrogen is inversely proportional to the purity of product hydrogen, resulting in low product hydrogen yield under the requirement of high-purity product hydrogen. Therefore, in the existing pressure swing adsorption technology The process of producing high-purity hydrogen in (PSA) has caused a huge waste of resources
[0003] Membrane separation technology is also used in the hydrogen production process. Although the use of membrane separation technology can reduce energy consumption, reduce one-time investment and high yield, the purity of the hydrogen produced generally does not exceed 99.8%, and its indicators cannot achieve high purity
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0033] A kind of high-purity, high-recovery hydrogen purification method of the present embodiment: comprise the following steps:
[0034] a. The first stage of pressure swing adsorption: divide the raw material gas with hydrogen content of 75%, carbon dioxide content of 24.5%, carbon monoxide content of 0.5% and pressure of 1.2Mpa into different time periods according to a certain time interval, and press the Sequentially sent to the first-stage adsorption tower, the first-stage adsorption tower is filled with hydrogen purification adsorbents, using different adsorption capacities for different components, to absorb carbon dioxide in the raw material gas, effective gas components hydrogen and other impurity gases as intermediate The gas is output from the top of the first-stage adsorption tower, and the hydrogen content is about 95% at this time;
[0035] b. Second-stage pressure swing adsorption: The intermediate gas output from the top of the first-stage adsorpt...
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 invention discloses a high-purity and high-recovery hydrogen purifying method and a realizing device. The hydrogen purifying method comprises the following steps: a) performing first-level pressure swing adsorption; b) performing second-level pressure swing adsorption; c) regenerating from the first-level pressure swing adsorption; and e) regenerating from the second-level pressure swing adsorption. The realizing device comprises a gas inlet pipe (1), at least three first adsorption towers (2), a first converse discharging pipe (3), a gas outlet pipe (4), a vacuum pump (8), at least three second adsorption towers (9), a second converse discharging pipe (10), a membrane component (13) and a buffer tank (14). By adopting the method and device provided by the invention, the scale of a pressure swing adsorption device is reduced, the methane yield is increased and the cost is lowered.
Description
technical field [0001] The invention relates to the field of hydrogen purification, in particular to a high-purity, high-recovery hydrogen purification method and a device for realizing it. Background technique [0002] Both pressure swing adsorption technology (PSA) and membrane separation technology can be used to produce hydrogen from cracked gas. Pressure swing adsorption (PSA) produces high-purity hydrogen above 99.9%. It is used in small-scale one-stage pressure swing adsorption hydrogen production units. In order to increase the yield and reduce operating costs, multiple pressure equalizations are used, but the hydrogen yield Generally, it will not exceed 92%, and the one-time investment is relatively large. For a long time, due to the characteristics of pressure swing adsorption (PSA), the yield of product hydrogen is inversely proportional to the purity of product hydrogen, resulting in low product hydrogen yield under the requirement of high-purity product hydroge...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/50
Inventor 钟雨明钟娅玲詹家聪
Owner SICHUAN TECHAIRS