IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0077270
(1993-06-17)
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발명자
/ 주소 |
- Leininger Thomas F. (Chino Hills CA) Robin Allen M. (Anaheim CA) Wolfenbarger James K. (Torrance CA) Suggitt Robert M. (Wappingers Falls NY)
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| 출원인 / 주소 |
- Texaco Inc. (White Plains NY 02)
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| 인용정보 |
피인용 횟수 :
29 인용 특허 :
0 |
초록
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A partial oxidation process for the production of a stream of hot clean gas substantially free from particulate matter, ammonia, alkali metal compounds, halides and sulfur-containing gas for use as synthesis gas, reducing gas, or fuel gas. A hydrocarbonaceous fuel comprising a solid carbonaceous fue
A partial oxidation process for the production of a stream of hot clean gas substantially free from particulate matter, ammonia, alkali metal compounds, halides and sulfur-containing gas for use as synthesis gas, reducing gas, or fuel gas. A hydrocarbonaceous fuel comprising a solid carbonaceous fuel with or without liquid hydrocarbonaceous fuel or gaseous hydrocarbon fuel, wherein said hydrocarbonaceous fuel contains halides, alkali metal compounds, sulfur, nitrogen and inorganic ash containing components, is reacted in a gasifier by partial oxidation to produce a hot raw gas stream comprising H2, CO, CO2, H2O, CH4, NH3, HCl, HF, H2S, COS, N2, Ar, particulate matter, vapor phase alkali metal compounds, and molten slag. The hot raw gas stream from the gasifier is split into two streams which are separately deslagged, cleaned and recombined. Ammonia in the gas mixture is catalytically disproportionated into N2 and H2. The ammonia-free gas stream is then cooled and halides in the gas stream are reacted with a supplementary alkali metal compound to remove HCl and HF. Alkali metal halides, vaporized alkali metal compounds and residual fine particulate matter are removed from the gas stream by further cooling and filtering. The sulfur-containing gases in the process gas stream are then reacted at high temperature with a regenerable sulfur-reactive mixed metal oxide sulfur sorbent material to produce a sulfided sorbent material which is then separated from the hot clean purified gas stream having a temperature of at least 1000°F.
대표청구항
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A partial oxidation process for producing hot, clean synthesis gas, reducing gas, or fuel gas product substantially free from particulate matter, ammonia, halides, alkali metal compounds and sulfur-containing gases comprising: (1) reacting a hydrocarbonaceous fuel comprising a solid carbonaceous fue
A partial oxidation process for producing hot, clean synthesis gas, reducing gas, or fuel gas product substantially free from particulate matter, ammonia, halides, alkali metal compounds and sulfur-containing gases comprising: (1) reacting a hydrocarbonaceous fuel comprising a solid carbonaceous fuel with or without liquid hydrocarbonaceous fuel or gaseous hydrocarbon fuel with a free-oxygen containing gas in a free-flow vertical refractory lined partial oxidation gas generator to produce a hot raw gas stream having a temperature in the range of about 1800°F. to 3000°F. and comprising H2, CO, CO2, H2O, CH4, NH3, HCl, HF, H2S, COS, N2, Ar and containing particulate matter, vapor phase alkali metal compounds, and molten slag; wherein said hydrocarbonaceous fuel contains halides, alkali metal compounds, sulfur, nitrogen and inorganic ash containing components; (2) splitting the stream of hot raw gas from (1) into two separate hot raw gas streams A and B; (3) introducing hot raw gas stream A at a temperature in the range of about 1800°F. to 3000°F. into a gas deslagging zone, removing molten slag and a slip-stream of hot raw gas from said gas deslagging zone and separating said molten slag from said slip-stream of hot raw gas in a gas quenching zone to produce a quenched slag-free stream of raw gas G; and removing a hot raw gas stream E substantially free from particulate matter and molten slag from said gas deslagging zone; (4) quenching hot raw gas stream B in water, separating out slag and particulate matter, and separating a clean stream of water-saturated raw gas C from the quench water; (5) dewatering and demisting raw gas stream C to produce raw gas stream D; and mixing together streams of raw gas D and raw gas E to produce raw gas stream H at a temperature in the range of about 1700°F. to 2300°F.; and cooling raw gas stream H by indirect heat exchange to a temperature in the range of about 1500°F. to 1850°F.; (6) thereafter mixing together raw gas streams G and H to produce raw gas stream I, having a temperature in the range of about 1475°F. to 1800°F. and catalytically disproportionating the ammonia in gas stream I into nitrogen and hydrogen, thereby producing ammonia-free gas stream J; cooling the ammonia-free gas stream J to a temperature in the range of about 1000°F. to 1300°F.; and introducing supplemental alkali metal compound into the cooled gas stream J to react with gaseous halides present in said gas stream J; further cooling and filtering the resulting gas stream J, and separating therefrom alkali metal halides, any remaining alkali metal compounds, and any remaining particulate matter; and (7) contacting the cooled and filtered gas stream J from (6) with a sulfur reactive metal oxide containing mixed metal oxide sulfur sorbent material in a sulfur-removal zone, wherein the sulfur-containing gases in the cooled and filtered gas stream J from (6) react with said sulfur reactive oxide containing mixed metal oxide sorbent material to produce a sulfided sorbent material; and separating said sulfided sorbent material from the cooled and filtered gas stream J to produce a clean product gas stream substantially free from ammonia, alkali metal compound, halides, sulfur and having a temperature of at least 1000°F.
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