Process for removing a contaminant from coal tar

A pollutant, coal tar technology, applied in tar processing, tar processing by chemical method, tar processing by selective solvent extraction, etc., can solve the problem of expensive petroleum

Inactive Publication Date: 2016-06-22
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, oil has become more and more expensive due to increased demand in recent decades

Method used

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  • Process for removing a contaminant from coal tar

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Embodiment Construction

[0011] The Figure shows one embodiment of a coal conversion process 5 . The coal feed 10 can be sent to the pyrolysis zone 15, the gasification zone 20, or the coal feed 10 can be split into two parts and sent to both.

[0012] In pyrolysis zone 15, the coal is heated at high temperature, eg, up to 2,000°C (3600°F), in the absence of oxygen, to remove volatile components. Coking produces a coke stream 25 and a coal tar stream 30 . Coke stream 25 can be used in other processes such as steel production.

[0013] Coal tar stream 30 from the coking process, comprising volatile components, may be passed to optional pollutant removal zone 35, if desired.

[0014] Contaminant removal for the removal of one or more pollutants from a coal tar stream or another process stream, depending on the effect of the particular pollutant on the product or process and the reason for the removal of the pollutant, as further described below Zone 35 may be located at various locations along the me...

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Abstract

A process for removing at least one contaminant from coal tar is described. The process involves extraction with an extraction agent or adsorption with an adsorbent. The extraction agent includes at least one of amphiphilic block copolymers, inclusion complexes of poly(methyl methacrylate) and polycyclic aromatic hydrocarbons, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent includes exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds.

Description

[0001] priority statement [0002] This application claims the benefit of Provisional Application Serial No. 61 / 905,895, filed November 19, 2013, which is hereby incorporated by reference in its entirety. Background of the invention [0003] Many different types of chemicals are produced by the processing of petroleum. However, oil has become increasingly expensive due to increased demand in recent decades. [0004] Therefore, an attempt was made to provide alternative sources of raw materials for the production of chemicals. Attention is now being paid to the production of liquid hydrocarbons from solid carbonaceous materials such as coal that are abundantly available in countries such as the United States and China. [0005] The pyrolysis of coal produces coke and coal tar. The coke making or "coking" process consists of heating material to very high temperatures in a closed vessel in the absence of oxygen. Coke is a porous but hard residue, mainly carbon and inorganic a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00C10C1/20C10K1/32
CPCC10C1/18C10C1/20C10G21/02C10G21/14C10G21/16C10G25/003C10G25/03C10G55/06C10G57/00C10G57/005C10G67/04C10G67/06
Inventor R·L·贝达德J·K·格拉瓦拉詹登阳G·F·马埃尔D·E·伦德
Owner UOP LLC
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