Process method for thioalkylation of thiophene

A process method and technology of thiophene sulphane, which are applied in the directions of hydrotreating process, petroleum industry, hydrocarbon oil treatment products, etc., can solve the problems of low removal rate of thiophene sulphur and large loss of octane number, etc., and achieve high product yield , the effect of improving the removal rate and improving the removal efficiency

Active Publication Date: 2020-11-10
KAIRUI ENVIRONMENTAL PROTECTION TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]However, this thiophene sulfur alkylation technology still has the disadvantages of low removal rate of thiophene sulfur, although the loss of octane number can be reduced, but the loss of octane number is still large. , and there is still a lot of room for savings in operating costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process method for thioalkylation of thiophene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of processing method of thiophene sulfur alkylation, comprises the following steps:

[0029] (1) Fractional distillation separation: FCC gasoline is used as the reaction raw material, and the FCC gasoline enters the fractionation tower 1 for fractionation to obtain light components and heavy components; the light components are discharged from the top of the tower, and the heavy components are discharged from the bottom of the tower and then enter the in the reactor;

[0030] The operating conditions of the fractionation tower are: tower top temperature 50°C, pressure 0.1MPa; tower bottom temperature 70°C, pressure 0.5MPa.

[0031] (2) Alkylation reaction: the heavy component in the step (1) is treated with 0.1h -1 After the space velocity enters the prereactor 2 (fixed bed reactor), the thiophene sulfur and olefins in the heavy component undergo alkylation under the catalysis of the resin catalyst KC115-2 produced by Kairui Environmental Protection Technology C...

Embodiment 2

[0037] A kind of processing method of thiophene sulfur alkylation, comprises the following steps:

[0038] (1) Fractional distillation separation: FCC gasoline is used as the reaction raw material, and the FCC gasoline enters the fractionation tower 1 for fractionation to obtain light components and heavy components; the light components are discharged from the top of the tower, and the heavy components are discharged from the bottom of the tower and then enter the in the reactor;

[0039] The operating conditions of the fractionation tower are: tower top temperature 60°C, pressure 5MPa; tower bottom temperature 78°C, pressure 6MPa.

[0040] (2) Alkylation reaction: the heavy component in step (1) with 5h -1 After the space velocity enters the prereactor 2 (fixed bed reactor), the thiophene sulfur and olefins in the heavy component undergo alkylation under the catalysis of the resin catalyst KC115-2 produced by Kairui Environmental Protection Technology Co., Ltd. in the prere...

Embodiment 3

[0046] A kind of processing method of thiophene sulfur alkylation, comprises the following steps:

[0047] (1) Fractional distillation separation: FCC gasoline is used as the reaction raw material, and the FCC gasoline enters the fractionation tower 1 for fractionation to obtain light components and heavy components; the light components are discharged from the top of the tower, and the heavy components are discharged from the bottom of the tower and then enter the in the reactor;

[0048]The operating conditions of the fractionation tower are: tower top temperature 70°C, pressure 10MPa; tower bottom temperature 80°C, pressure 12MPa.

[0049] (2) Alkylation reaction: the heavy component in the step (1) with 10h -1 After the space velocity enters the prereactor 2 (fixed bed reactor), the thiophene sulfur and olefins in the heavy component undergo alkylation under the catalysis of the resin catalyst KC115-2 produced by Kairui Environmental Protection Technology Co., Ltd. in the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a process method for thioalkylation of thiophene. The process method comprises the following steps: feeding catalytically cracked gasoline into a fractionating tower for fractionation, discharging light components from the top of the tower, discharging heavy components from the bottom of the tower, and feeding the heavy components into a pre-reactor; carrying out alkylationreaction on thiophene sulfur and olefin in the pre-reactor, and enabling a product to enter a hydrogenation catalytic distillation tower; reacting the unreacted thiophene sulfur in the hydrogenationcatalytic distillation tower continuously with olefin, discharging heavy substances from the bottom of the tower, and discharging a thiophene sulfur-removed product from the top of the tower. According to the invention, the pre-reactor firstly alkylates thiophene sulfur and olefin to improve the removal rate of thiophene sulfur; secondly, dialkene is consumed in a pre-reactor, H2 consumption is reduced in a hydrogenation catalytic distillation tower, and meanwhile, the olefin hydrogenation saturation rate is low, so that the octane number loss of the product is reduced; thirdly, due to the arrangement of the pre-reactor, the removal efficiency is improved, the consumption of a catalyst in the hydrogenation catalytic distillation tower is reduced, and the service life is prolonged; and finally, the reaction in the pre-reactor is relatively mild, catalytic cracking is not easy to occur, and the product yield is relatively high.

Description

technical field [0001] The invention relates to a process for thiophene sulfur alkylation, which belongs to the technical field of chemical engineering. Background technique [0002] As people pay more and more attention to environmental protection, the requirements for oil quality are getting higher and higher. The current standards for measuring oil quality are lead-free, low-sulfur, low-aromatic, low-olefin and high-octane. At present, the market share of FCC oil in our country is about 75%, and 90% of the sulfides in FCC gasoline come from thiophene sulfur and its derivatives. These sulfides produce sulfur oxides during combustion and affect the environment. [0003] The previous process is hydrodesulfurization, so the equipment cost and operation cost are relatively high. In order to reduce the cost, people have developed the thiophene sulfur alkylation technology. The related process and corresponding catalysts of this technology are the alkylation reaction of thioph...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C10G69/12
CPCC10G69/123C10G2300/202C10G2400/02Y02P20/10
Inventor 毛进池刘文飞张长胜刘巧芬张美娟
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap