发明名称 |
Process for the preparation of synthesis gas from black liquor |
摘要 |
A process for the adjustment of the composition of a synthesis gas produced in a high temperature black liquor gasifier. The process includes the steps of (a) generating a gasifier effluent stream from black liquor in the gasifier by a blast and optionally an atomising stream; (b) optionally quenching the gasifier effluent stream with a gas stream to form a gas quenched effluent stream; (c) quenching the gasifier effluent of step (a) or the gas quenched effluent gas stream of step (b) with a water stream to form a raw synthesis gas; (d) further cooling and cleaning and separating the raw synthesis gas to form a purified unprocessed synthesis gas with an appropriate H2/CO ratio; (e) partly converting the purified synthesis gas to dimethyl ether in a synthesis section, producing at least a product stream of DME and a hydrogen rich purge stream of processed; (f) splitting and recycling individual or combinations of split streams of the processed or the unprocessed synthesis gas to step a and/or step (b); and recycling a by-product stream of CO2 being further generated in step (e) in part or completely to step (a) and/or step (b).
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申请公布号 |
US8038906(B2) |
申请公布日期 |
2011.10.18 |
申请号 |
US20090431240 |
申请日期 |
2009.04.28 |
申请人 |
HALDOR TOPSOEE A/S |
发明人 |
NIELSEN POUL ERIK HOEJLUND;VOSS BODIL |
分类号 |
D21C11/00;C01B3/24;C10J3/46 |
主分类号 |
D21C11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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