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Use of carbon dioxide from hydropyrolysis for process inerting

A technology of hydropyrolysis and hydroconversion, which is applied in hydroprocessing process, hydrogen/synthesis gas production, products, etc., and can solve problems such as high pressure difference

Active Publication Date: 2021-01-29
GAS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, conventional hydroconversion reactors can rapidly experience high pressure differentials due to the presence of reactive coke precursors in the pyrolysis oil or coke produced as a result of catalysis

Method used

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  • Use of carbon dioxide from hydropyrolysis for process inerting
  • Use of carbon dioxide from hydropyrolysis for process inerting
  • Use of carbon dioxide from hydropyrolysis for process inerting

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Embodiment Construction

[0023] Hydropyrolysis process and containing CO 2 steam flow

[0024] The hydropyrolysis process includes a hydropyrolysis step which occurs in a hydropyrolysis reaction vessel containing hydrogen gas and a deoxygenation catalyst. Representative hydropyrolysis steps are described, for example, in US Patent No. 8,492,600. Hydropyrolysis generally involves feeding hydrogen gas with a biomass-containing feedstock and / or a biomass-derived feedstock into a hydropyrolysis reaction vessel operated at elevated temperature and pressure. resulting in one or more CO-containing 2 Vapor stream, which is typically accompanied by at least one liquid product, such as hydropyrolysis bio-oil and / or other "higher value" liquids, by "higher value liquid" is meant a biomass-containing or biomass-derived feedstock A liquid product having a greater value (eg, by weight) than a combination thereof. Representative higher value liquids include individual compounds (e.g. levoglucosan), classes of co...

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Abstract

A hydropyrolysis process comprises feeding (i) hydrogen and (ii) a biomass-containing or biomass-derived feedstock to a hydropyrolysis reaction vessel. The method comprises generating CO containing 2 A vapor stream and at least one liquid product. from CO 2 CO separated from the vapor stream 2 The product is advantageously used in at least one inerting function of the hydropyrolysis process. Representative inerting functions include: operating solids transfer equipment, capping liquid containers, drying biomass-containing or biomass-derived feedstock, conveying or separating solids, and combinations thereof. Importantly, the CO utilized by these inerting functions 2 Products can be obtained primarily, if not exclusively (depending on the nature of the feedstock), from renewable carbon in biomass.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Application Serial No. 14 / 479,246, filed September 5, 2014, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention involves the use of carbon dioxide produced by a hydropyrolysis process as an inert gas to maintain one or more, and possibly all, of the inerting requirements of a hydropyrolysis process. Background technique [0004] Biomass refers to biological material derived from living or dead organisms and includes lignocellulosic material (such as wood), vegetable oils, carbohydrates (such as sugars), aquatic material (such as algae, aquatic plants, and seaweed), and animal by-products and waste materials (such as sewage, fat and sewage sludge). In conventional pyrolysis of biomass (typically fast pyrolysis in an inert atmosphere), a thick acidic reactive liquid bio-oil product is obtained containing water, oil and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/06C10G3/00C01B32/50
CPCC10G3/50C10G2300/1011C01B2203/0216C01B2203/0405C01B2203/043C10G1/002C10G1/06Y02P30/20Y02E50/10C10G47/02C10G65/12Y02P20/145
Inventor M·B·林克T·L·马克M·J·罗伯茨L·G·菲利克斯
Owner GAS TECH INST