CO2 adsorption and recovery system and method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-063/04
B01D-053/047
B01D-053/04
B01D-053/053
B01D-063/02
출원번호
US-0875643
(2015-10-05)
등록번호
US-9878291
(2018-01-30)
우선권정보
TW-103222187 U (2014-12-15); TW-104115851 A (2015-05-19)
발명자
/ 주소
Tai, Chin-Chih
Wang, Yun-Hsin
출원인 / 주소
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
대리인 / 주소
Rabin & Berdo, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A CO2 adsorption and recovery system including an intake unit, a first purification/adsorption/regeneration unit, a second purification/adsorption/regeneration unit, a three-way valve switching unit, a vacuum drawing unit and an exhaust unit is provided. The first and second purification/adsorption/
A CO2 adsorption and recovery system including an intake unit, a first purification/adsorption/regeneration unit, a second purification/adsorption/regeneration unit, a three-way valve switching unit, a vacuum drawing unit and an exhaust unit is provided. The first and second purification/adsorption/regeneration units have a hollow fiber bundle impurity adsorption column, a hollow fiber bundle CO2 adsorption column and two heating devices. One set of adsorption columns performs purification and adsorption procedures to the inlet gas in a normal or high pressure condition, and the other set of adsorption columns performs desorption and regeneration procedures in a high temperature condition when the adsorption columns are heated by the heating devices. The three-way valve switching unit exchanges the purification and adsorption procedures with the regeneration procedure to the first and second units. The vacuum drawing unit draws CO2 desorbed from the CO2 adsorption columns alternatively. The exhaust unit drains a purified product gas out.
대표청구항▼
1. A CO2 adsorption and recovery system, comprising: an intake unit for providing an inlet gas;a first purification/adsorption/regeneration unit having one hollow fiber bundle impurity adsorption column connected to the intake unit, one hollow fiber bundle CO2 adsorption column connected to the one
1. A CO2 adsorption and recovery system, comprising: an intake unit for providing an inlet gas;a first purification/adsorption/regeneration unit having one hollow fiber bundle impurity adsorption column connected to the intake unit, one hollow fiber bundle CO2 adsorption column connected to the one hollow fiber bundle impurity adsorption column, and two heating devices, the two heating devices including a first heating device disposed around the one impurity adsorption column and a second heating device disposed around the one CO2 adsorption column;a second purification/adsorption/regeneration unit having an other hollow fiber bundle impurity adsorption column connected to the intake unit, an other hollow fiber bundle CO2 adsorption column connected to the other hollow fiber bundle impurity adsorption column, and an other two heating devices, the other two heating devices including a third heating device disposed around the other impurity adsorption column and a fourth heating device disposed around the other CO2 adsorption column, wherein one set of the hollow fiber bundle impurity and CO2 adsorption columns performs purification and adsorption procedures to the inlet gas in a normal or high pressure condition, and an other set of hollow fiber bundle impurity and CO2 adsorption columns performs desorption and regeneration procedures using a purified product gas generated after finishing the purification and adsorption procedures as an elution airflow in a high temperature condition when the other set of adsorption columns is heated by the other two heating devices;a three-way valve switching unit used to exchange the purification and adsorption procedures with the desorption and regeneration procedures to the first and second purification/adsorption/regeneration units;a vacuum drawing unit connected between the one and the other hollow fiber bundle CO2 adsorption columns for drawing CO2 desorbed from the one and the other hollow fiber bundle CO2 adsorption columns alternatively; andan exhaust unit used to drain the purified product gas out. 2. The CO2 adsorption and recovery system according to claim 1, wherein a variety of gases adsorbed by the one and the other hollow fiber bundle impurity adsorption columns does not contain CO2. 3. The CO2 adsorption and recovery system according to claim 1, wherein the adsorption material used in the one and the other hollow fiber bundle CO2 adsorption columns has high selective adsorption capacity for CO2. 4. The CO2 adsorption and recovery system according to claim 1, wherein each of the one and the other hollow fiber bundle impurity adsorption columns and the one and the other hollow fiber bundle CO2 adsorption columns has a plurality of axial hollow fiber adsorbents arranged side by side in the shape of columns and disposed therein, and the inlet gas passes through the hollow fiber adsorbents via an axial direction of the bore of the hollow fiber adsorbents. 5. The CO2 adsorption and recovery system according to claim 4, wherein the hollow fiber adsorbents have a specific surface area between 2500˜3500 m2/m3. 6. The CO2 adsorption and recovery system according to claim 4, wherein the hollow fiber adsorbents have a double layer or a multi-layer structure. 7. The CO2 adsorption and recovery system according to claim 4, wherein the hollow fiber adsorbents comprise a thermally conductive adsorption material. 8. The CO2 adsorption and recovery system according to claim 1, wherein when the desorption and regeneration procedures are performed, the vacuum drawing unit is activated. 9. The CO2 adsorption and recovery system according to claim 1, further comprising a gas storage tank used to store the desorbed CO2. 10. The CO2 adsorption and recovery system according to claim 1, wherein the purification and adsorption procedures have an operating temperature lower than 60° C., and an operating pressure between 1-10 bar. 11. The CO2 adsorption and recovery system according to claim 1, wherein the desorption and regeneration procedures have an operating temperature between 150-200° C. 12. The CO2 adsorption and recovery system according to claim 1, wherein the three-way valve switching unit comprises: a first solenoid valve, a second solenoid valve and a third solenoid valve, sequentially disposed in a channel of the first purification/adsorption/regeneration unit;a fourth solenoid valve, a fifth solenoid valve and a sixth solenoid valve, sequentially disposed in a channel of the second purification/adsorption/regeneration unit;a first pipe connected between the first solenoid valve and the fourth solenoid valve;a second pipe connected between the second solenoid valve and the fifth solenoid valve;a third pipe connected between the third solenoid valve and the sixth solenoid valve;a seventh solenoid valve three-way connected among the one and the other hollow fiber bundle CO2 adsorption columns and the vacuum drawing unit; anda diverter valve disposed on a regenerative elution pipe, wherein the regenerative elution pipe is connected between the second pipe and the exhaust unit;wherein the first solenoid valve is three-way connected among the intake unit, the first pipe and the hollow fiber bundle impurity adsorption column; the fourth solenoid valve is three-way connected among the intake unit, the first pipe and the other hollow fiber bundle impurity adsorption column;the second solenoid valve is three-way connected among the hollow fiber bundle impurity adsorption column, the second pipe and the hollow fiber bundle CO2 adsorption column; the fifth solenoid valve is three-way connected among the other hollow fiber bundle impurity adsorption column, the second pipe and the other hollow fiber bundle CO2 adsorption column;the third solenoid valve is three-way connected among the exhaust unit, the third pipe and the hollow fiber bundle CO2 adsorption column; the sixth solenoid valve is three-way connected among the exhaust unit, the third pipe and the other hollow fiber bundle CO2 adsorption column. 13. The CO2 adsorption and recovery system according to claim 12, wherein a part of the product gas is diverted by the diverter valve to perform regenerative elution. 14. A CO2 adsorption and recovery method, comprising: using a one hollow fiber bundle impurity adsorption column to purify an inlet gas so as to adsorb impurities exclusive of CO2 from the inlet gas;using a one hollow fiber bundle CO2 adsorption column to perform an adsorption procedure to the purified inlet gas to adsorb the CO2 contained in the inlet gas; andperforming a desorption and regeneration procedure using a purified product gas generated after finishing the purification and adsorption procedures as an elution airflow in a high temperature condition to desorb the CO2 from the one hollow fiber bundle CO2 adsorption column. 15. The CO2 adsorption and recovery method according to claim 14, wherein the desorption procedure is performed in conjunction with a vacuum drawing process in a high temperature condition. 16. The CO2 adsorption and recovery method according to claim 15, wherein in the high temperature condition, the desorption procedure has an operating temperature between 150-200° C., a heating time between 10-30 minutes, and a vacuum drawing time is between 1-5 minutes. 17. The CO2 adsorption and recovery method according to claim 14, further comprising: alternating the other hollow fiber bundle impurity adsorption column and an other hollow fiber bundle CO2 adsorption column with the one hollow fiber bundle impurity adsorption column and the one hollow fiber bundle CO2 adsorption column to exchange the purification and adsorption procedures with the desorption and regeneration procedures. 18. The CO2 adsorption and recovery method according to claim 14, wherein impurities in the inlet gas contain water vapor, volatile organic gas, nitrogen oxides, sulfur oxides, nitrogen or oxygen.
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