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Method for producing aromatics by catalytic conversion of methanol

A technology for catalytic conversion and methanol, which is applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, petroleum industry, etc., can solve the problem of low yield of aromatics, achieve high aromatics selectivity, and reduce catalyst wear.

Active Publication Date: 2021-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is the technical problem of low yield of aromatics in the prior art, and a method for producing aromatics by catalytic conversion of methanol is provided

Method used

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  • Method for producing aromatics by catalytic conversion of methanol
  • Method for producing aromatics by catalytic conversion of methanol

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] use as figure 1 The device shown includes a dilute phase zone, a methanol reaction zone, and a light hydrocarbon reaction zone; the dilute phase zone is located above the light hydrocarbon reaction zone, and the outlet of the methanol reaction zone is located at the upper part of the light hydrocarbon feed distributor in the light hydrocarbon reaction zone; the dilute phase zone Set at least one set of cyclone separators; the regeneration inclined pipe is connected to the methanol reaction area, and the inclined pipe to be produced is connected to the light hydrocarbon reaction area; the mass percentage of aromatics is 4.99%, and the mass percentage of methanol is 49.9% of non- Aromatic hydrocarbon raw materials enter the light hydrocarbon reaction zone and react with the spent agent. The reaction temperature is 500°C, the reaction gauge pressure is 0 MPa, and the weight space velocity of light hydrocarbons is 0.5 hours. -1 , the catalyst bed density is 500 kg / m 3 ; Me...

Embodiment 2

[0035] use as figure 1 The device shown includes a dilute phase zone, a methanol reaction zone, and a light hydrocarbon reaction zone; the dilute phase zone is located above the light hydrocarbon reaction zone, and the outlet of the methanol reaction zone is located at the upper part of the light hydrocarbon feed distributor in the light hydrocarbon reaction zone; the dilute phase zone At least one set of cyclone separators is set; the regenerated inclined pipe is connected to the methanol reaction area, and the inclined pipe to be produced is connected to the light hydrocarbon reaction area; the mass percentage of aromatics is 0.1%, and the mass percentage of methanol is 0.1%. The reaction temperature in the light hydrocarbon reaction zone is 630°C, the reaction gauge pressure is 0.5 MPa, and the weight space velocity of light hydrocarbons is 3 hours -1 , the catalyst bed density is 350 kg / m 3 ; Methanol mass percentage content is 30% raw material enters methanol reaction zo...

Embodiment 3

[0042] use as figure 1 The device shown includes a dilute phase zone, a methanol reaction zone, and a light hydrocarbon reaction zone; the dilute phase zone is located above the light hydrocarbon reaction zone, and the outlet of the methanol reaction zone is located at the upper part of the light hydrocarbon feed distributor in the light hydrocarbon reaction zone; the dilute phase zone At least one set of cyclone separators is set; the inclined regeneration pipe is connected to the methanol reaction zone, and the inclined pipe to be produced is connected to the light hydrocarbon reaction zone; the mass percentage of aromatics is 2%, and the mass percentage of methanol is 30%. The reaction temperature in the light hydrocarbon reaction zone is 580°C, the reaction gauge pressure is 0.2 MPa, and the weight space velocity of light hydrocarbons is 0.8 hours -1 , the catalyst bed density is 400 kg / m 3 ; Methanol mass percentage content is 98% raw material enters methanol reaction zo...

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Abstract

The invention relates to a method for preparing aromatics by catalytic conversion of methanol, which mainly solves the problem of low yield of aromatics in the prior art. In the present invention, the raw material including methanol enters the methanol reaction zone and the regenerant comes through the regeneration slide valve and the regeneration inclined pipe for contact reaction, and the reaction product and the catalyst with increased carbon deposition go up through the outlet distributor of the methanol reaction zone and enter the light hydrocarbon reaction. zone and the raw materials including light hydrocarbons that enter the light hydrocarbon reaction zone through the light hydrocarbon feed distributor continue to contact and react, and the generated reaction products entrain a small amount of spent agent and enter the dilute phase area, and then enter the subsequent separation after the spent agent is separated by the cyclone separator Section; the technical scheme that the raw agent enters the regenerator through the inclined pipe and the sliding valve to burn off the carbon deposits solves this problem well, and can be used in the industrial production of aromatics.

Description

technical field [0001] The invention relates to a method for preparing aromatics by catalytic conversion of methanol. Background technique [0002] Aromatic hydrocarbons (especially triphenyl, benzene, toluene, xylene, namely BTX) are important basic raw materials for organic synthesis. Driven by the demand for downstream derivatives, the market demand for aromatics, especially xylene, continues to grow. [0003] Catalytic reforming and steam cracking processes are the main production processes of aromatics, which belong to the petroleum route production technology. my country is relatively rich in coal resources. With the successful development of high-efficiency, long-cycle methanol catalysts and large-scale methanol plant technology in recent years, the production cost of coal-based methanol has been greatly reduced, which provides a cheap source of raw materials for the production of methanol downstream products (olefins, aromatics, etc.). Therefore, it is considered ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G3/00
CPCC10G3/49C10G3/54C10G3/62Y02P30/20
Inventor 李晓红钟思青俞志楠王洪涛
Owner CHINA PETROLEUM & CHEM CORP