Continuous reaction regeneration system and method for converting C3-C9 hydrocarbon and alcohol ether into aromatic hydrocarbon

A C3-C9, reaction regeneration technology, used in chemical instruments and methods, condensation between hydrocarbons and non-hydrocarbons to produce hydrocarbons, organic chemistry, etc., can solve the problems of high energy consumption, complex process, etc. The effect of prolonging the start-up period, strengthening the gas-solid contact and catalytic conversion effect

Active Publication Date: 2022-03-04
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the aromatization of alcohol ethers often produces a large amount of light hydrocarbons, which need to be converted in another reactor after separation, the process is complex and energy-intensive

Method used

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  • Continuous reaction regeneration system and method for converting C3-C9 hydrocarbon and alcohol ether into aromatic hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Will C 3 -C 9 The two-stage fluidized bed (1) for producing aromatics from hydrocarbons and alcohol ethers is connected with the catalyst regeneration fluidized bed (2) with pipelines to form a complete system; the C 3 -C 9 Catalyst for producing aromatics from hydrocarbons and alcohol ethers (2% gallium oxide-3% yttrium oxide-1% cerium oxide-44% β molecular sieve-50% ZSM-5) loaded into C 3 -C 9 In the two-stage fluidized bed (1) for producing aromatics from hydrocarbons and alcohol ethers and the catalyst regeneration fluidized bed (2), first realize the smooth circulation flow of the catalyst in the system;

[0042] Hot air is passed into the catalyst regeneration fluidized bed (2) so that the temperature in the catalyst regeneration fluidized bed (2) reaches 600°C. In an atmosphere that ensures the safety of the system, the catalyst in the catalyst regeneration fluidized bed (2) is circulated to C 3 -C 9 In the two-stage fluidized bed (1) for preparing aromatic...

Embodiment 2

[0049] The two-stage fluidized bed (1) of C3-C9 hydrocarbons and alcohol ether aromatics is connected with the catalyst regeneration fluidized bed (2) with pipelines to form a complete system; the C 3 -C 9 Catalyst for producing aromatics from hydrocarbons and alcohol ethers (3% zinc oxide-0.5% lanthanum oxide-1% chromium oxide-24% ZSM-5-30% Y molecular sieve-41.5% SBA-15) loaded into C 3 -C 9 In the two-stage fluidized bed (1) for producing aromatics from hydrocarbons and alcohol ethers and the catalyst regeneration fluidized bed (2), first realize the smooth circulation flow of the catalyst in the system;

[0050] Pass hot air into the catalyst regeneration fluidized bed (2) to bring the temperature in the catalyst regeneration fluidized bed (2) to 648°C. In an atmosphere that ensures the safety of the system, the catalyst in the catalyst regeneration fluidized bed (2) is circulated to C 3 -C 9 In the two-stage fluidized bed (1) for preparing aromatics from hydrocarbon a...

Embodiment 3

[0057] Will C 3 -C 9 The two-stage fluidized bed (1) for producing aromatics from hydrocarbons and alcohol ethers is connected with the catalyst regeneration fluidized bed (2) with pipelines to form a complete system; the C 3 -C 9 Catalysts for producing aromatics from hydrocarbons and alcohol ethers (1% gallium oxide-25% ZSM-22-40% MCM-41-34% MCM-22) loaded into C 3 -C 9 In the two-stage fluidized bed (1) for producing aromatics from hydrocarbons and alcohol ethers and the catalyst regeneration fluidized bed (2), first realize the smooth circulation flow of the catalyst in the system;

[0058] Pass hot air into the catalyst regeneration fluidized bed (2) to bring the temperature in the catalyst regeneration fluidized bed (2) to 635°C. In an atmosphere that ensures the safety of the system, the catalyst in the catalyst regeneration fluidized bed (2) is circulated to C 3 -C 9 In the two-stage fluidized bed (1) for preparing aromatics from hydrocarbon and alcohol ether, th...

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Abstract

The invention discloses a fluidized bed continuous reaction regeneration system and method for graded conversion of C3-C9 hydrocarbon and alcohol ether into aromatic hydrocarbon in the technical field of chemical process and equipment, and the system comprises a two-section fluidized bed (from bottom to top, the two-section fluidized bed is provided with a first reaction zone and a second reaction zone for respective temperature control, and meanwhile, the temperature is controlled through vaporization and indirect heat exchange of alcohol ether liquid feed in the second reaction zone. And a fluidized bed for catalyst regeneration. The connection relationship between the two fluidized beds is that after the catalyst in the two fluidized beds is inactivated, the catalyst enters the catalyst regeneration fluidized bed from the first reaction zone, and returns to the two fluidized beds after high-temperature regeneration; the system and the method have the characteristics of high hydrocarbon conversion rate, high alcohol ether conversion rate, high aromatic hydrocarbon yield and simple temperature control.

Description

technical field [0001] The invention belongs to the technical field of chemical process and equipment, and specifically relates to a 3 -C 9 A continuous reaction regeneration system for converting hydrocarbons and alcohol ethers into aromatic hydrocarbons, the structure and method of reactors and regenerators. Background technique [0002] C 3 -C 9 mixture of hydrocarbons. With the expansion of the device, its output increases year by year. Because it is a mixture (such as raffinate, light naphtha), there are many isomers, and it is difficult to separate again, so the added value is not high. With the lightening of ethylene raw materials and excess fuel use, coupled with the pressure of carbon emission reduction, it is increasingly necessary to find new processing channels for such raw materials. [0003] Aromatic hydrocarbons are important chemical platform compounds, which can continue to prepare various high-performance plastics, pharmaceuticals and pesticides and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/28B01J8/18C07C2/86C07C15/02
CPCB01J8/28B01J8/1872B01J8/1809C07C2/864C07C2/865B01J8/1836B01J2208/00132B01J2208/00743B01J2208/00902C07C15/02Y02P20/584
Inventor 崔超婕骞伟中王宏梅
Owner TSINGHUA UNIV
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