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Hydromethanation Of A Carbonaceous Feedstock

a carbonaceous feedstock and hydromethanization technology, applied in the direction of gasification process details, granular/pulverulent flue gasification, combustible gas production, etc., can solve the problems of agglomeration of carbonaceous materials, equipment failures, etc., and achieve the effect of increasing the overall efficiency of the process

Inactive Publication Date: 2012-05-03
SURE CHAMPION INVESTMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0031]In addition to the heat management issue, the ability to feed higher moisture content carbonaceous feedstock into the hydromethanation increases overall efficiency of the process due, for example, to the reduction of drying that may be necessary in the feedstock preparation, as discussed in further detail below.

Problems solved by technology

Poor heat management in the hydromethanation reactor can, for example, result in premature (and sometimes catastrophic) equipment failure, as well as agglomeration of carbonaceous materials.

Method used

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  • Hydromethanation Of A Carbonaceous Feedstock
  • Hydromethanation Of A Carbonaceous Feedstock

Examples

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examples of specific embodiments

[0254]A specific embodiment of the process is one in which the process is a continuous process, in which steps (a), (b) and (c), are operated in a continuous manner.

[0255]Another specific embodiment is on in which the superheated steam stream and oxygen-rich stream are mixed at or prior to introduction into the lower portion of the fluidized bed.

[0256]Another specific embodiment is one in which oxygen-rich gas stream (14) is supplied continuously to hydromethanation reactor (200), and the amount of oxygen provided is varied as a process control, for example, to control of the desired operating temperature of the hydromethanation reaction. As oxygen is supplied to the hydromethanation reactor, the resulting oxidation / combustion reaction (for example with carbon in the by-product char and fines) generates heat energy (as well as typically some amounts of carbon monoxide and hydrogen). The amount of oxygen supplied to the hydromethanation reactor can be increased or decreased to increa...

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Abstract

The present invention relates to processes for hydromethanating a carbonaceous feedstock to a methane-enriched synthesis gas, where an oxygen-rich gas stream and the carbonaceous feedstock are fed into a fluidized-bed hydromethanation reactor, and where the carbonaceous feedstock as fed into the hydromethanation reactor has an elevated moisture content in order, for example, to assist in heat management within the hydromethanation reactor.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority under 35 U.S.C. §119 from U.S. Provisional Application Ser. No. 61 / 408,928 (filed 1 Nov. 2010), the disclosure of which is incorporated by reference herein for all purposes as if fully set forth.[0002]This application is related to commonly owned U.S. patent application Ser. No. ______, (attorney docket no. FN-0065 US NP1, entitled HYDROMETHANATION OF A CARBONACEOUS FEEDSTOCK, concurrently filed herewith), the disclosure of which is incorporated by reference herein for all purposes as if fully set forth.FIELD OF THE INVENTION[0003]The present invention relates to processes for hydromethanating a carbonaceous feedstock to a methane-enriched synthesis gas, where an oxygen-rich gas stream and the carbonaceous feedstock are fed into a fluidized-bed hydromethanation reactor, and where the carbonaceous feedstock as fed into the hydromethanation reactor has an elevated moisture content in order, for example, to as...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L3/08
CPCC10J3/463C10J2300/0903C10J2300/093C10J2300/0959C10J2300/0973C10L3/08C10J2300/1618C10J2300/1662C10J2300/1838C10J2300/1884C10J2300/1892C10J2300/0986C10J3/46
Inventor RAMAN, PATTABHI K.JIRADILOK, VEERAYAROBINSON, EARL T.SIRDESHPANDE, AVINASH
Owner SURE CHAMPION INVESTMENT LTD
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