Title:
METHOD FOR PRODUCING HIGH BOILING POINT SOLVENT OIL BYPRODUCT IN CRUDE BENZENE REFINEMENT
Document Type and Number:
WIPO Patent Application WO/2024/051737
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of crude benzene refinement, and provided is a method for producing a high boiling point solvent oil byproduct in crude benzene refinement. The method comprises the following steps: first, crude benzene is preheated and enters into a pre-distillation column, and a low boiling point compound and heavy benzene are remove; a hydrofining reaction is carried out, a refined material is fed into two distillation columns, and high-purity benzene, high-purity toluene, xylene, and a high boiling point solvent oil byproduct are produced. By means of optimizing the temperature at the bottom of the pre-distillation column, xylene is extracted from a side route of a toluene column and a high boiling point solvent oil byproduct is produced from the bottom of the column while ensuring that the yield and quality of benzene, toluene, and xylene are not reduced; also, the present invention has advantages such as being procedurally simple, having stable operations, lower production costs, a good aromatic hydrocarbon recovery rate, and no need for additional separation apparatuses such as distillation columns, and increases the economic benefits and societal benefits of an enterprise.
Inventors:
ZHU LEI (CN)
LI ZHIGUO (CN)
LI HUI (CN)
LI DA (CN)
LI XIN (CN)
LI FENGYU (CN)
LIU SHUQUN (CN)
LIU LIHUA (CN)
LI ZHIGUO (CN)
LI HUI (CN)
LI DA (CN)
LI XIN (CN)
LI FENGYU (CN)
LIU SHUQUN (CN)
LIU LIHUA (CN)
Application Number:
PCT/CN2023/117238
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
HUAIBEI COAL IND TEACHERS COLLEGE (CN)
International Classes:
C07C7/00; C07C15/04; C07C15/06; C07C15/08; C10G67/02
Domestic Patent References:
| WO2014079599A1 | 2014-05-30 |
Foreign References:
| CN116640603A | 2023-08-25 | |||
| CN103013560A | 2013-04-03 | |||
| CN105646126A | 2016-06-08 | |||
| CN103520945A | 2014-01-22 | |||
| CN106916044A | 2017-07-04 | |||
| FR1186934A | 1959-09-03 | |||
| CN1900032A | 2007-01-24 |
Other References:
WANG, XINDONG ET AL.: "5.2 Deep processing of Motor Benzol", GREEN COKING PROCESS TECHNOLOGY, 31 December 2020 (2020-12-31), pages 237 - 238
Attorney, Agent or Firm:
HEFEI KWONG YUEN ESTATE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) et al. (CN)
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