Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of CO2 enrichment and conversion equipment and method in a confined space

A closed space, CO2 technology, applied in the field of aerospace catalysis, can solve the problems of large resistance drop in microchannel reactors, and achieve the effects of reducing weight, avoiding side reactions, and saving space and volume

Active Publication Date: 2018-10-09
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resistance drop of the microchannel reactor is relatively large. Due to the limitation of pressurized power consumption in space stations or submarines, the structure still needs to be optimized.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of CO2 enrichment and conversion equipment and method in a confined space
  • A kind of CO2 enrichment and conversion equipment and method in a confined space
  • A kind of CO2 enrichment and conversion equipment and method in a confined space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Use MDEA as absorbent to enrich CO through continuous or intermittent operation 2 , And then desorb; by adjusting H 2 Flow control of hydrogen and CO 2 The molar ratio is 3.5:1. Packing NiO-Al in the methanation reactor 2 O 3 Co-precipitation methanation catalyst, catalyst light-off temperature 240 ℃. The reaction pressure is 1.7atm. The raw material gas is preheated and preheated twice in the reactor, and the inlet temperature of the catalyst I is higher than 240℃; the methanation reaction in the reaction bed generates heat and the heat is removed in time. When the feed gas is preheated, the outlet temperature of the catalyst I bed is 500°C; it is cooled to about 240°C through an air-cooled heat exchanger, and then enters the catalyst II to continue the methanation reaction. The temperature of the second stage methanation bed (catalyst II) of the reactor is at At about 330°C, it exchanges heat with hydrogen and further cools the temperature. The methanation reactor outl...

Embodiment 2

[0060] Use ionic liquid as absorbent to enrich CO through continuous or intermittent operation 2 , And then desorb; by adjusting H 2 Flow control of hydrogen and CO 2 The molar ratio is 3.5:1. Fill the methanation reactor with Ru / Ce made by immersion method 0.8 Zr 0.2 O 2 The catalyst, the catalyst light-off temperature is 120°C. The reaction pressure is 1.7atm, the raw material gas is preheated and preheated twice in the reactor, the inlet temperature of the catalyst I is higher than the light-off temperature; the methanation reaction in the reaction bed releases heat, and the heat is removed in time It is used to preheat the raw material gas. The outlet temperature of the catalyst I bed is 450°C; it is cooled to about 160°C through an air-cooled heat exchanger and enters the catalyst II to continue the methanation reaction. The temperature of the second stage methanation bed (catalyst II) of the reactor At about 260°C, it exchanges heat with hydrogen to cool the temperature f...

Embodiment 3

[0062] Use alcohol ethers as absorbents to enrich CO through continuous or intermittent operation 2 , And then desorb; by adjusting H 2 Flow control of hydrogen and CO 2 The molar ratio is 3:1. Loading Co in the methanation reactor 3 O 4 -Al 2 O 3 Co-precipitation methanation catalyst, catalyst ignition temperature 300 ℃. The reaction pressure is 6atm. The raw material gas is preheated and preheated twice in the reactor. The inlet temperature of the catalyst I is higher than 300℃; the methanation reaction in the reaction bed generates heat, and the heat is removed in time. Preheat the raw material gas, the outlet temperature of the catalyst I bed is 650℃; it is cooled to about 300℃ through the air-cooled heat exchanger, and then enters the catalyst II to continue the methanation reaction. The temperature of the second stage methanation bed (catalyst II) of the reactor is 350 ℃ or so, and then exchange heat with hydrogen to further cool the temperature, the methanation reactor o...

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

No PUM Login to View More

Abstract

The invention relates to an apparatus and a method for enriching and converting CO2 in a closed space, and belongs to the technical field of spaceflight catalysis. The apparatus is composed of a CO2 micro-channel enricher, a CO2 micro-channel desorption device, a CO2 hydrogenation methanation reactor, an absorption liquid circulating pump, a gas induced draught fan or a vacuum pump, and a starting electric heater. The method is characterized in that CO2 is enriched through continuous or intermittent operation by adopting an absorption liquid, and then desorption is carried out; a molar ratio of hydrogen to CO2 is controlled through adjusting the flow amount of H2; and a methanation reactor is filled with a methanation catalyst I and a catalyst II, raw gas is primarily preheated and secondarily preheated in the reactor and undergoes a methanation reaction. The apparatus and the method can effectively control the CO2 content in the closed space, and provide water for electrolytic oxygen production; and the CO2 enrichment and methanation apparatus has the advantages of compact structure, integration of CO2 enrichment and methanation reaction, improvement of the integrated level of a system, space saving and system weight reduction.

Description

Technical field [0001] The invention belongs to the field of aerospace catalysis technology, and specifically relates to a CO in a confined space 2 Enrichment and transformation equipment and methods. technical background [0002] CO in the atmosphere 2 The concentration is 0.03%, when the CO in the atmosphere 2 When the concentration reaches 0.1%, people will feel nauseous; when it reaches 1%, it will cause fainting and fatigue; when it reaches 2%, breathing and heartbeat will accelerate; when 3%, the central nervous system will be paralyzed; 5 %, people can only hold for 30 minutes; in a confined space, the CO produced by breathing 2 , 0.7-1.0kg / day per person per day; while humans need to consume 0.83kg of oxygen per day. How to realize oxygen supply for occupants in confined spaces such as space stations and submarines to avoid CO 2 The accumulation in the crew compartment is a problem that must be solved for space exploration. In addition, O 2 Recycling and self-sufficiency...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/18C07C1/12C07C9/04
Inventor 王胜王树东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI