IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0130628
(2009-11-03)
|
등록번호 |
US-8821760
(2014-09-02)
|
우선권정보 |
AT-A1822/2008 (2008-11-21) |
국제출원번호 |
PCT/EP2009/064494
(2009-11-03)
|
§371/§102 date |
20110810
(20110810)
|
국제공개번호 |
WO2010/057767
(2010-05-27)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Siemens VAI Metals Technologies GmbH
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
8 |
초록
▼
A method and an apparatus for generating a gas containing hydrogen (H2) and carbon monoxide (CO), as a raw material for chemical utilization in, for example, synthesis processes based on export gas from a metallurgical process, are shown. Part of the export gas is subjected to CO conversion with the
A method and an apparatus for generating a gas containing hydrogen (H2) and carbon monoxide (CO), as a raw material for chemical utilization in, for example, synthesis processes based on export gas from a metallurgical process, are shown. Part of the export gas is subjected to CO conversion with the addition of water vapor, crude synthesis gas with a defined quantity ratio of H2 to CO being formed. Even the water vapor required for CO conversion can be at least partially generated in at least one steam generator in the method.
대표청구항
▼
1. A method for generating a gas containing hydrogen and carbon monoxide, as a raw material for chemical utilization in synthesis processes based on export gas from a metallurgical process, the method comprising: adding at least one of water and water vapor to the metallurgical process thereby affec
1. A method for generating a gas containing hydrogen and carbon monoxide, as a raw material for chemical utilization in synthesis processes based on export gas from a metallurgical process, the method comprising: adding at least one of water and water vapor to the metallurgical process thereby affecting the quantity ratio of H2 to CO, in the export gas;obtaining the export gas from top gas from a blast furnace or a reduction shaft or from offgas from a fluidized bed reactor or from excess gas from a melt-down gasifier or from mixtures of these gases;subjecting at least part of the export gas to CO conversion in a transformation reactor with the addition of water vapor from a steam generator;using the converted at least part of the export gas as a crude synthesis gas with a defined quantity ratio of H2 to CO, in a subsequent synthesis process;storing a further part of the export gas in a gasholder for the purpose of compensating fluctuations in at least one of quantity and in calorific value in the export gas; andgenerating the water vapor in the steam generator by means of the combustion of the at least further part of the export gas. 2. The method according to claim 1, wherein the metallurgical process is a melt-reduction process which is operated by means of a blast furnace or by means of a melt-down gasifier which works in conjunction with at least one reduction assembly, which can be a reduction shaft or a fluidized bed reactor, iron oxide-containing raw materials wherein the raw materials can be iron ores, pellets or sinter, and aggregates being reduced, so as to form a reduction gas, and subsequently being melted into liquid pig iron. 3. The method according to claim 1, wherein the water vapor is generated in the steam generator by means of at least one of the combustion of at least a further part of the export gas and by using waste heat from at least one of the metallurgical process, from CO conversion, and from the synthesis processes. 4. The method according to claim 1, wherein at least one of top gas and offgas is at least one of dedusted, wherein dedusting can be performed dry, and purified by means of wet dedusting, if appropriate cooled by means of a waste heat steam generator or a heat exchanger and made available as export gas. 5. The method according to claim 1, wherein the export gas, before it is fed into the transformation reactor or after it has been discharged from the transformation reactor, is compressed by means of a compressor, if appropriate after a separation of polyaromatic hydrocarbons from the export gas. 6. The method according to claim 1, wherein the CO conversion takes place, if appropriate after a heating of the export gas, wherein the heating can be performed at 300-450° C. 7. The method according to claim 1, wherein the crude synthesis gas is cooled by means of at least one of: by one or more heat exchangers operated as a preheating assembly, by means of a water cooler, and by means of a waste heat steam generator, in order to set the temperature. 8. The method according to claim 1, wherein the crude synthesis gas is first cooled and is then delivered to a separation process, wherein the separation process can be an a physical absorption process, a chemical absorption process, or a physical/chemical absorption process, in which sulfur and CO2 are at least partially or largely completely, separated from the crude synthesis gas. 9. The method according to claim 8, wherein the crude synthesis gas treated in the separation process is heated, wherein the crude synthesis gas can be heated to a temperature of 200 to 400° C. and is desulfurized in a fine desulfurization stage, wherein the desulfurization stage may use zinc oxide or activated charcoal. 10. The method according to claim 7, wherein the waste heat occurring during the cooling of the crude synthesis gas in the heat exchanger is used for heating the crude synthesis gas treated in the separation process. 11. The method according to claim 7, wherein the water vapor occurring during cooling in the waste heat steam generator is delivered to the transformation reactor for use in CO conversion. 12. The method according to claim 1, wherein the crude synthesis gas treated, in particular in the separation process, is heated to a temperature of 200 to 450° C. by means of a heat exchanger. 13. The method according to claim 9, wherein the crude synthesis gas is compressed by means of a compressor, if appropriate before at least one of the further fine desulfurization stage and the synthesis process. 14. The method according to claim 8, wherein the separated sulfur is separated from the separated CO2 in a sulfur regeneration device, the remaining CO2 being used in the metallurgical process instead of nitrogen, wherein the CO2 can be used for gas barriers with respect to the atmosphere. 15. The method according to claim 1, wherein part of the export gas is locked out for use as fuel gas in other heating devices. 16. The method according to claim 1, wherein at least one of the quantity ratio of H2 to CO, the pressure, and the temperature of the crude synthesis gas is set as a function of the synthesis process in which the crude synthesis gas is processed. 17. The method according to claim 1, wherein at least part of the water vapor formed in the steam generator is delivered as an energy carrier to the separation process, a theniial expulsion of the CO2 from the absorption liquid used in the separation process taking place. 18. The method according to claim 1, wherein tail gas from a CO2 removal device of the metallurgical process is mixed with the further part of the export gas and is burnt in the steam generator. 19. The method according to claim 1, wherein scavenging gas from the synthesis process is mixed with the further part of the export gas and is burnt in the steam generator. 20. The method according to claim 1, wherein waste heat from the metallurgical process is used for the production of water vapor, and the water vapor in this case generated is delivered to at least one of the transformation reactor and to the separation process. 21. The method according to claim 1, wherein partially oxidized hydrocarbons, wherein the partially oxidized hydrocarbons can be natural gas, asphalt, coal or naphtha, are used in addition to the export gas.
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