HYDROTREATMENT METHOD FOR LOW-TEMPERATURE FISCHER-TROPSCH SYNTHESIS PRODUCT

Title:

HYDROTREATMENT METHOD FOR LOW-TEMPERATURE FISCHER-TROPSCH SYNTHESIS PRODUCT

Document Type and Number:

WIPO Patent Application WO/2016/127840

Kind Code:

A1

Abstract:

The hydrotreatment method for a low-temperature Fischer-Tropsch synthesis product of the present invention comprises the following steps of: (1) firstly, mixing a Fischer-Tropsch wax with a sulfur-containing liquid catalyst in a certain proportion, then putting same into contact with hydrogen gas, then firstly feeding same into a first reaction region of a hydrogenation pretreatment catalyst, and then feeding the effluent of the first reaction region into a second reaction region filled with a hydrocracking catalyst and carrying out a hydrocracking reaction; (2) feeding a hydrocracking product of the second reaction region, together with a Fischer-Tropsch naphtha and diesel oil, into a third reaction region so as to come into contact with a hydrofining catalyst, and carrying out a hydrofining reaction; then feeding the effluent of the hydrofining reaction into a fourth reaction region so as to come into contact with a hydroisomerizing pour point depression catalyst, and carrying out a isomerizing pour point depression reaction; and (3) feeding the effluent of the fourth reaction region into a gas-liquid separation system C, wherein a hydrogen-rich gas is separated therefrom and recycled, and a liquid product is fed into a fractionation system D and separated so as to obtain naphtha, diesel oil and a tail oil, wherein the tail oil is circulated back to the second reaction region. By means of the present invention, the density of the synthesized diesel oil can be increased, the condensation point can be decreased, and the indexes for an automotive diesel oil can be achieved.

More Like This:

WO/2006/071506	METHOD OF REMOVING SULFUR FROM SULFUR-CONTAINING HYDROCARBON STREAMS
JP2008503629	Lubricating base oil manufacturing method and its usage
JP2005213419	METHOD FOR HYDROGENATING C5 FRACTION AND METHOD FOR PRODUCING OLEFINES

Inventors:

LAI BO (CN)
SHI YOULIANG (CN)
XU LI (CN)

Application Number:

PCT/CN2016/073024

Publication Date:

August 18, 2016

Filing Date:

February 01, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

WUHAN KAIDI ENG TECH RES INST (CN)

International Classes:

C10G67/02

Foreign References:

CN104611056A	2015-05-13
US20020146358A1	2002-10-10
CN101210198A	2008-07-02
CN101821364A	2010-09-01
CN101177619A	2008-05-14
US20040159582A1	2004-08-19

Other References: