Method for treating a carbon dioxide-containing waste gas from an electrofusion process
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-003/24
B01D-053/62
B01D-053/76
C21C-005/52
F27D-017/00
출원번호
US-0979761
(2012-01-02)
등록번호
US-9005570
(2015-04-14)
우선권정보
DE-10 2011 002 615 (2011-01-13)
국제출원번호
PCT/EP2012/050017
(2012-01-02)
§371/§102 date
20131001
(20131001)
국제공개번호
WO2012/095329
(2012-07-19)
발명자
/ 주소
Baldauf, Manfred
Matschullat, Thomas
출원인 / 주소
Siemens Aktiengesellschaft
대리인 / 주소
Staas & Halsey LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A method for treating a carbon dioxide-containing waste gas from an electrofusion process, in which a hydrocarbon-containing gas is fed to a waste gas and the carbon dioxide in the waste gas is converted at least partially into carbon monoxide and hydrogen in a reaction and the carbon monoxide-hydro
A method for treating a carbon dioxide-containing waste gas from an electrofusion process, in which a hydrocarbon-containing gas is fed to a waste gas and the carbon dioxide in the waste gas is converted at least partially into carbon monoxide and hydrogen in a reaction and the carbon monoxide-hydrogen mixture is stored for an additional combustion process.
대표청구항▼
1. A method for treatment of a carbon dioxide-containing waste gas from an electric smelting process, comprising: supplying the waste gas to a re-combustion system and subjecting the waste gas to a re-combustion process performed in the re-combustion system to produce a re-combusted gas;feeding a hy
1. A method for treatment of a carbon dioxide-containing waste gas from an electric smelting process, comprising: supplying the waste gas to a re-combustion system and subjecting the waste gas to a re-combustion process performed in the re-combustion system to produce a re-combusted gas;feeding a hydrocarbon-containing gas to the re-combusted gas to produce a reacted gas, the hydrocarbon-containing gas converting at least a portion of the carbon dioxide of the re-combusted gas into a carbon monoxide-hydrogen mixture;cooling the reacted gas in a heat exchange process; andsupplying the carbon monoxide-hydrogen mixture to the re-combustion system and using the carbon monoxide-hydrogen mixture as a combustion gas in the re-combustion system. 2. The method as claimed in claim 1, wherein, in addition to the hydrocarbon-containing gas, water is added to the re-combusted gas obtained from the re-combustion system and the water is used in a reaction that converts carbon monoxide and water into carbon dioxide and hydrogen. 3. The method as claimed in claim 1, wherein the electric smelting process uses an electric arc furnace that produces the waste gas, andin the supplying the waste gas, the waste gas is supplied from the electric arc furnace. 4. A method for treatment of a carbon dioxide-containing waste gas from an electric smelting process, comprising: performing a re-combustion process on the waste gas, using a combustion gas, the re-combustion process producing a re-combusted gas containing carbon dioxide;feeding a hydrocarbon-containing gas to the re-combusted gas to produce a reacted gas, the hydrocarbon-containing gas converting at least a portion of the carbon dioxide of the re-combusted gas into a carbon monoxide-hydrogen mixture;cooling the reacted gas in a heat exchange process to form a cooled reacted gas containing the carbon monoxide-hydrogen mixture; andusing the cooled reacted gas containing the carbon monoxide-hydrogen mixture in a thermal process. 5. The method as claimed in claim 4, wherein the electric smelting process uses an electric arc furnace, andthe waste gas is produced in the electric arc furnace. 6. The method as claimed in claim 5, wherein the thermal process is another cycle of the re-combustion process and the carbon monoxide-hydrogen mixture is used as a combustion gas in the another cycle of the re-combustion process. 7. The method as claimed in claim 5, wherein the thermal process is another combustion process of a steel smelting process and the carbon monoxide-hydrogen mixture is used as a combustion gas in the another combustion processes. 8. The method as claimed in claim 4, further comprising: storing the reacted gas along with the carbon monoxide-hydrogen mixture in a gas holder prior to use in the thermal process. 9. The method as claimed in claim 8, wherein the thermal process is another cycle of the re-combustion process and the carbon monoxide-hydrogen mixture is used as a combustion gas in the another cycle of the re-combustion process. 10. The method as claimed in claim 8, wherein the thermal process is another combustion process of a steel smelting process and the carbon monoxide-hydrogen mixture is used as a combustion gas in the another combustion processes. 11. The method as claimed in claim 4, wherein, in addition to the hydrocarbon-containing gas, water is added to the re-combusted gas. 12. The method as claimed in claim 11, wherein the water serves to convert carbon monoxide into carbon dioxide and hydrogen. 13. The method as claimed in claim 11, wherein the water converts carbon monoxide into carbon dioxide and hydrogen, andthe water serves to control a ratio of carbon monoxide to hydrogen in the reacted gas. 14. The method according to claim 4, wherein the thermal process is a further combustion process. 15. The method as claimed in claim 4, wherein when the hydrocarbon-containing gas is fed to the re-combusted gas, carbon dioxide in the re-combusted gas enters into an endothermic reaction with the hydrocarbon-containing gas, andthe re-combusted gas is cooled by the endothermic reaction to produce the reacted gas. 16. The method as claimed in claim 4, wherein the hydrocarbon-containing gas contains methane. 17. The method as claimed in claim 4, wherein the heat exchange process uses a heat exchanger to exchange heat between the reacted gas and a heat exchange medium. 18. The method as claimed in claim 4, further comprising: monitoring a carbon-dioxide content of the waste gas using a gas sensor, to regulate a supply of the hydrocarbon-containing gas.
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이 특허에 인용된 특허 (5)
Brauns Frank E. (Alta Loma CA), Manufacture of steel from ores containing high phosphorous and other undesirable constituents.
Linder Rolf (Skjutarevagen 7 77 200 Grangesberg SW), Method and an electrically heated device for producing molten metal from powders or lumps of metal oxides.
Collin Per Harald (Falun SW) Johansson Folke Karl Evald (Borlange SW), Method for simultaneous combined production of electrical energy and crude iron.
Allerton ; III Hugh G. (Rochester Hills MI) Coburn James L. (Houghton MI) Thames Bernie M. (New Baltimore MI) Bal Dennis S. (Tshpeming MI), Thermal reclamation method for the recovery of metals from air bag inflators.
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