CATALYTIC GASIFICATION PROCESS WITH RECOVERY OF ALKALI METAL FROM CHAR

    公开(公告)号:WO2009086383A3

    公开(公告)日:2009-07-09

    申请号:PCT/US2008/088174

    申请日:2008-12-23

    Abstract: Processes are described for the extraction and recovery of alkali metal from the char that results from catalytic gasification of a carbonaceous material. Among other steps, the processes of the invention include a hydrothermal leaching step in which a slurry of insoluble particulate comprising insoluble alkali metal compounds is treated with carbon dioxide and steam at elevated temperatures and pressures to effect the conversion of insoluble alkali metal compounds to soluble alkali metal compounds. Further, processes are described for the catalytic gasification of a carbonaceous material where a substantial portion of alkali metal is extracted and recovered from the char that results from the catalytic gasification process.

    CARBONACEOUS FUELS AND PROCESSES FOR MAKING AND USING THEM
    5.
    发明申请
    CARBONACEOUS FUELS AND PROCESSES FOR MAKING AND USING THEM 审中-公开
    制造和使用它们的碳燃料和工艺

    公开(公告)号:WO2009086372A1

    公开(公告)日:2009-07-09

    申请号:PCT/US2008/088156

    申请日:2008-12-23

    Abstract: The present invention provides carbonaceous fuels and processes for making them. Moreover, the invention also relates to processes using the carbonaceous fuels in the production of cement products. One embodiment of the invention is a carbonaceous fuel comprising (a) unconverted fines of a carbonaceous feedstock, the carbonaceous feedstock having an ash content of greater than 1%, the fines having an average particle size less than about 45 μm; and (b) a char residue formed by catalytic gasification of the carbonaceous feedstock, the char residue having an ash content of greater than about 30%, wherein the ash includes at least one aluminum-containing compound or silicon-containing compound; and having a weight ratio of fines to char residue in the range of about 4: 1 to about 1 :4, and a total dry basis wt% of carbon of least about 40%. Another embodiment of the invention is a process of making a cement product comprising: (a) providing a carbonaceous fuel as described above; (b) passing the carbonaceous fuel into a cement-making zone; and (c) at least partially combusting the carbonaceous fuel to provide heat for a cement producing reaction within the cement-making zone.

    Abstract translation: 本发明提供碳质燃料及其制备方法。 此外,本发明还涉及在生产水泥产品时使用碳质燃料的方法。 本发明的一个实施方案是含碳燃料,其包含(a)未转化的碳质原料的细粉,所述含碳原料具有大于1%的灰分含量,所述细粉具有小于约45μm的平均粒径; 和(b)通过碳质原料的催化气化形成的焦炭残渣,所述焦炭残余物具有大于约30%的灰分含量,其中所述灰分包括至少一种含铝化合物或含硅化合物; 并且具有在约4:1至约1:4的范围内的细粉与焦炭残余物的重量比,总干基重量%至少为约40%。 本发明的另一个实施方案是制备水泥产品的方法,包括:(a)提供如上所述的含碳燃料; (b)将碳质燃料送入水泥制造区; 和(c)至少部分地燃烧含碳燃料,以提供在水泥制造区内产生水泥的反应的热量。

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