Check patentability & draft patents in minutes with Patsnap Eureka AI!

Methanol-to-aromatic hydrocarbon lightweight product utilization method

A methanol and product technology, which is applied in the field of utilization of light products of methanol to aromatics, can solve the problem of high energy consumption in gas separation, and achieve the effects of reducing energy consumption, reducing energy consumption, and reducing feed load

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem of high gas separation energy consumption in the utilization process of methanol-to-aromatics light products in the prior art, and a new utilization method of methanol-to-aromatics light products is provided

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
  • Methanol-to-aromatic hydrocarbon lightweight product utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] according to figure 1 The process flow shown. Methanol with a scale of 1.8 million tons / year is reacted in a methanol reactor to produce 1.2wt% hydrogen, 1.3wt% methane, 0.2wt% carbon dioxide, 55.4wt% water, 16.5wt% and 23.6wt% of C2 to C5 hydrocarbons Methanol aromatization products of other hydrocarbons, after heat exchange cooling, three-phase separation to obtain water phase, oil phase containing heavy hydrocarbons such as benzene, toluene, xylene and hydrogen and light hydrocarbon products such as methane, ethylene , ethane, propylene, propane gas phase, wherein the gas phase contains 53% volume fraction of hydrogen. After the gas phase is boosted to 2.8MPa by the compressor, the acid gas is removed through the alkali washing tower, so that the mass content of carbon dioxide in it is less than 5wppm, and the water is removed through the dryer, so that the mass content of water in it is less than 3wppm, and then sent to into the membrane separation unit. A hollow...

Embodiment 2

[0029] according to figure 1 The process flow shown. Methanol with a scale of 1.8 million tons / year is reacted in a methanol reactor to produce 0.7wt% hydrogen, 1.5wt% methane, 0.2wt% carbon dioxide, 56.3wt% water, and 16.8wt% and 24.5wt% of C2 to C5 hydrocarbons Methanol aromatization products of other hydrocarbons, after heat exchange cooling, three-phase separation to obtain water phase, oil phase containing heavy hydrocarbons such as benzene, toluene, xylene and hydrogen and light hydrocarbon products such as methane, ethylene , ethane, propylene, propane gas phase, wherein the gas phase contains 40.4% volume fraction of hydrogen. After the gas phase is boosted to 2.1MPa by the compressor, the acid gas is removed through the alkali washing tower, so that the mass content of carbon dioxide in it is less than 10wppm, and the water is removed through the dryer, so that the mass content of water in it is less than 8wppm, and then sent to into the membrane separation unit. A...

Embodiment 3

[0032] according to figure 1 The process flow shown. Methanol with a scale of 1.8 million tons / year is reacted in a methanol reactor to produce 2.5wt% hydrogen, 1.2wt% methane, 0.2wt% carbon dioxide, 55.5wt% water, and 16.6wt% and 24.0wt% of C2 to C5 hydrocarbons Methanol aromatization products of other hydrocarbons, after heat exchange cooling, three-phase separation to obtain water phase, oil phase containing heavy hydrocarbons such as benzene, toluene, xylene and hydrogen and light hydrocarbon products such as methane, ethylene , ethane, propylene, propane gas phase, wherein the gas phase contains 69.5% volume fraction of hydrogen. After the gas phase is boosted to 2.5MPa by the compressor, the acid gas is removed through the alkali washing tower, so that the mass content of carbon dioxide in it is less than 6wppm, and the water is removed through the dryer, so that the mass content of water in it is less than 1wppm, and then sent to into the membrane separation unit. Th...

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 present invention relates to a methanol-to-aromatic hydrocarbon lightweight product utilization method. A purpose of the present invention is mainly to solve the problem of high gas separation energy consumption in the methanol-to-aromatic hydrocarbon lightweight product utilization process. The technical scheme of the present invention comprises that 1) methanol is converted into a methanol aromatization product containing hydrogen, hydrocarbons and water in a methanol reactor; 2) the aromatization product is separated into a gas phase, an oil phase and a water phase in a three phase separation unit; 3) after the gas phase is compressed, the compressed gas phase is conveyed into a membrane separation unit so as to be separated into hydrogen-rich gas and poor hydrogen gas; 4) the poor hydrogen gas is further compressed and cooled, the obtained the poor hydrogen gas is conveyed to a gas-liquid separation unit so as to be separated into methane-rich gas and a poor methane liquid; 5) the methane-rich gas is conveyed into a gas separation unit so as to be separated into methane and the streams of hydrocarbons having a carbon atom number of more than or equal to 2; 6) the streams of hydrocarbons having a carbon atom number of more than or equal to 2 and the poor methane liquid are conveyed into a light hydrocarbon reactor and are converted into a light hydrocarbon aromatization product; and 7) the light hydrocarbon aromatization product returns to the three phase separation unit. With the technical scheme, the problem in the prior art is well solved. The method of the present invention can be used for the industrial production of aromatic hydrocarbons.

Description

technical field [0001] The invention relates to a method for utilizing light products of aromatics produced from methanol. [0002] technical background [0003] Aromatics, especially light aromatics BTX (benzene, toluene, xylene), are important basic organic chemical raw materials, and their output and scale are second only to ethylene and propylene. The main source of aromatics is the catalytic reforming of naphtha. Combining my country's rich coal resources and increasing dependence on oil, the development of coal-to-aromatics technology with raw material price advantages has become a research hotspot in the past ten years, and technological breakthroughs have been made in recent years, especially coal-based methanol-to-aromatics technology has been The industrial demonstration test has been completed. [0004] A major feature of methanol-to-aromatics technology is that there are a wide variety of reaction products, including not only target products such as aromatics, bu...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C2/76C07C15/02C07C9/04C01B3/50C01B3/56
CPCC01B3/503C01B2203/0405C01B2203/048C01B2203/062C07C1/20C07C2/76C07C15/02C07C9/04
Inventor 金鑫杨卫胜贺来宾
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com