Particulate compositions are described comprising an intimate mixture of a coal and a gasification catalyst. The particulate compositions are gasified in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, carbon dioxide, hydro
Particulate compositions are described comprising an intimate mixture of a coal and a gasification catalyst. The particulate compositions are gasified in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products.
대표청구항▼
1. A process for preparing a particulate composition, the process comprising the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock, a second coal feedstock and, optionally, a third coal feedstock, each in particulate form;(c) contacting one of the petroleum co
1. A process for preparing a particulate composition, the process comprising the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock, a second coal feedstock and, optionally, a third coal feedstock, each in particulate form;(c) contacting one of the petroleum coke particulate, the first coal feedstock, the second coal feedstock or the third coal feedstock, with a first aqueous solution comprising a transition metal gasification catalyst to form a first slurry;(d) contacting one of petroleum coke particulate, the first coal feedstock, the second coal feedstock or the third coal feedstock, other than the one used for step (c), with a second aqueous solution comprising an alkaline earth metal source to form a second slurry;(e) contacting one of the petroleum coke feedstock, the first coal feedstock, the second coal feedstock or the third coal feedstock, other than ones used for steps (c) and (d), with a third aqueous solution comprising an alkali metal gasification catalyst to form a third slurry; and(f) dewatering the first slurry, the second slurry, and the third slurry to form a first wet cake, a second wet cake, and a third wet cake, respectively; wherein the process comprises the further steps of (1) or (2): (1) (g1) thermally treating the first wet cake, the second wet cake, and the third wet cake with a dry inert gas to provide a first particulate, a second particulate, and a third particulate; and (h1) mixing at least a portion of each of the first particulate, the second particulate, and the third particulate to form a particulate composition, wherein, in (1), if the petroleum coke particulate is not used in step (c), (d) or (e), the third coal feedstock is provided and is used in one of steps (c), (d) or (e), and the petroleum coke particulate is mixed with at least a portion of each of the first particulate, second particulate and third particulate to form a particulate composition; or (2) (g2) combining at least a portion of each of the first wet cake, the second wet cake, and the third wet cake to form a final wet cake; and (h2) optionally thermally treating the final wet cake with a dry inert gas as needed to form a particulate composition, wherein, in (2), if the petroleum coke particulate is not used in step (c), (d) or (e), the third coal feedstock is provided and is used in one of steps (c), (d) or (e); and (i) the petroleum coke particulate is mixed with at least a portion of each of the first wet cake, the second wet cake and the third wet cake to form the final wet cake, which is optionally thermally treated with a dry inert gas as needed to form a particulate composition; (ii) the petroleum coke particulate is mixed with at least a portion of the final wet cake, which is optionally thermally treated with a dry inert gas as needed to form a particulate composition; or (iii) the petroleum coke particulate is mixed with at least a portion of the particulate composition from step (h2). 2. The process according to claim 1, wherein the process comprises the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock, a second coal feedstock, and a third coal feedstock, all in particulate form;(c) contacting the first coal feedstock with a first aqueous solution comprising a transition metal gasification catalyst to form a first slurry;(d) contacting the second coal feedstock with a second aqueous solution comprising an alkaline earth metal source to form a second slurry;(e) contacting the third coal feedstock with a third aqueous solution comprising an alkali metal gasification catalyst to form a third slurry;(f) dewatering the first slurry, the second slurry, and the third slurry to form a first wet cake, a second wet cake, and a third wet cake, respectively;(g) thermally treating the first wet cake, the second wet cake, and the third wet cake with a dry inert gas to provide a first particulate, a second particulate, and a third particulate; and(h) mixing the petroleum coke particulate with at least a portion of the first particulate, at least a portion of the second particulate, and at least a portion of the third particulate to form a particulate composition. 3. The process of claim 1, wherein the process comprises the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock and a second coal feedstock, both in particulate form;(c) contacting one of the petroleum coke particulate, first coal feedstock or second coal feedstock with a first aqueous solution comprising a transition metal gasification catalyst to form a first slurry;(d) contacting one of petroleum coke particulate, the first coal feedstock or the second coal feedstock, other than the one used for step (c), with a second aqueous solution comprising an alkaline earth metal source to form a second slurry;(e) contacting one of the petroleum coke feedstock, the first coal feedstock or the second coal feedstock, other than ones used for steps (c) and (d), with a third aqueous solution comprising an alkali metal gasification catalyst to form a third slurry;(f) dewatering the first slurry, the second slurry, and the third slurry to form a first wet cake, a second wet cake, and a third wet cake, respectively;(g) thermally treating the first wet cake, the second wet cake, and the third wet cake with a dry inert gas to provide a first particulate, a second particulate, and a third particulate; and(h) mixing at least a portion of the first particulate, at least a portion of the second particulate, and at least a portion of the third particulate to form a particulate composition. 4. The process according to claim 1, wherein the process comprises the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock, a second coal feedstock, and a third coal feedstock, all in particulate form;(c) contacting the first coal feedstock with a first aqueous solution comprising a transition metal gasification catalyst to form a first slurry;(d) contacting the second coal feedstock with a second aqueous solution comprising an alkaline earth metal source to form a second slurry;(e) contacting the third coal feedstock with a third aqueous solution comprising an alkali metal gasification catalyst to form a third slurry;(f) dewatering the first slurry, the second slurry, and the third slurry to form a first wet cake, a second wet cake, and a third wet cake, respectively;(g) combining at least a portion of the first wet cake, at least a portion of the second wet cake, and at least a portion of the third wet cake to form a final wet cake; and(h) mixing the petroleum coke particulate with at least a portion of the final wet cake to provide a particulate composition. 5. The process according to claim 1, wherein the process comprises the steps of: (a) providing a petroleum coke particulate;(b) providing a first coal feedstock and a second coal feedstock, both in particulate form;(c) contacting one of the petroleum coke particulate, first coal feedstock or second coal feedstock with a first aqueous solution comprising a transition metal gasification catalyst to form a first slurry;(d) contacting one of petroleum coke particulate, the first coal feedstock or the second coal feedstock, other than the one used for step (c), with a second aqueous solution comprising an alkaline earth metal source to form a second slurry;(e) contacting one of the petroleum coke feedstock, the first coal feedstock or the second coal feedstock, other than ones used for steps (c) and (d), with a third aqueous solution comprising an alkali metal gasification catalyst to form a third slurry;(f) dewatering the first slurry, the second slurry, and the third slurry to form a first wet cake, a second wet cake, and a third wet cake, respectively;(g) combining at least a portion of the first wet cake, at least a portion of the second wet cake, and at least a portion of the third wet cake to form a final wet cake; and(h) thermally treating the final wet cake with a dry inert gas to form a particulate composition. 6. The process according to claim 1, wherein the alkali metal gasification catalyst comprises a source of potassium and/or sodium; the alkaline earth metal source comprises a source of calcium, magnesium and/or barium; and the transition metal gasification catalyst comprises Fe, Mn or mixtures thereof.
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