System and technology for synthesis of methanol and co-production of methane by using synthesis gas

A technology for synthesizing methanol and methane, which is applied in the chemical industry, can solve problems such as environmental pollution and resource waste, achieve good peak-shaving operations, eliminate carbon emissions, and achieve the effects of diversity

Active Publication Date: 2015-05-20
SOUTHWEST RES & DESIGN INST OF CHEM IND
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The direct discharge of these exhaust gases causes serious environmental pollution and huge waste of resources.

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
  • System and technology for synthesis of methanol and co-production of methane by using synthesis gas
  • System and technology for synthesis of methanol and co-production of methane by using synthesis gas
  • System and technology for synthesis of methanol and co-production of methane by using synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The process flow of synthesizing methanol from synthesis gas and co-producing methane figure 1 shown. In this embodiment, according to the composition of raw material gas, the synthesis gas is firstly passed through a three-stage methanol synthesis reactor, and then through a three-stage methanation reactor. The methanol reactor and the methanation reactor are all connected in series.

[0034] The composition of raw syngas is: CO 28.0%; CO 2 2.18%; H 2 64.25%; N 2 0.1%; CH 4 5.47%, the amount of feed gas is 100L / h, the reaction temperature of synthetic methanol is 220°C, the pressure is 5.0MPa, and the reaction space velocity is 5000h -1 , the synthesis gas enters the methanation reactor after passing through the three-stage synthesis methanol reactor. The specific composition of the reaction tail gas at the outlet of the third-stage methanol synthesis reactor after condensation and gas-liquid separation is: CO4.90%; CO 2 8.20%; H 2 46.74%; N 2 0.72%; CH ...

Embodiment 2

[0036] The process flow of synthesizing methanol from synthesis gas and co-producing methane figure 2 As shown, in this example, according to the composition of raw material gas, the synthetic gas is firstly passed through a two-stage methanol synthesis reactor, and then through a three-stage methanation reactor. The methanol reactor and the methanation reactor are all connected in series.

[0037] The composition of raw syngas is: CO 19.08%; CO 2 1.30%; H 2 64.41%; N 2 0.29%; CH 4 14.62%, the amount of feed gas is 100L / h, the ratio of hydrogen to carbon is 3.10, the reaction temperature of synthetic methanol is 220℃, the pressure is 5.0MPa, and the reaction space velocity of primary methanol synthesis is 10000h -1 , the synthesis gas enters the methanation reactor after passing through the secondary methanol synthesis reactor. The specific composition of the reaction tail gas at the outlet of the second-stage methanol synthesis reactor after condensation and gas-liqui...

Embodiment 3

[0039] The process flow of synthesizing methanol from synthesis gas and co-producing methane image 3 shown. In this embodiment, according to the composition of the raw material gas, the synthetic gas is divided into two routes and enters a synthesis methanol reactor and a primary methanation reactor respectively, and then passes through a three-stage methanation reactor.

[0040] The amount of raw gas is 100L / h, and the composition of raw syngas is: CO 16.65%; CO 2 1.504%; H 2 72.888%; N 2 0.304%; CH 4 8.66%, 20L / h raw synthesis gas enters the methanol synthesis reactor, and another 80L / h raw synthesis gas enters the methanation reactor after heat exchange. The reaction temperature for synthesizing methanol is 220°C, the pressure is 5.0MPa, and the reaction space velocity is 7000h -1 , the specific composition of the reaction tail gas at the outlet of the synthetic methanol reactor after condensation and gas-liquid separation is: CO 9.72%; CO 2 1.64%; H 2 75.56%;...

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 belongs to the technical field of chemical industry, and relates to the technical field of synthesizing methanol from synthetic gas prepared from coal, coke oven gas, calcium carbide furnace tail gas, coalbed methane and shale gas and the comprehensive utilization of methanation, specifically a method for synthesizing methanol with syngas and co-production Methane systems and processes. In this system, the reactor for synthesizing methanol and the reactor for synthesizing methane are connected in series or in parallel, and the methanol synthesizer is placed at any position except the end position, and the reactor at the end is the reactor for synthesizing methanation; the reaction for synthesizing methanol The number of reactors is ≥1, the number of reactors for synthesizing methane is ≥1, and the synthesis gas is not circulated. The present invention uses synthesis gas to synthesize methanol and co-produce methane, realizes the production of coal-to-methanol and coal-to-natural gas at the same time, can greatly improve the conversion efficiency of carbon; realizes the non-circular production of synthesis gas in the synthetic methanol industry, reduces the The energy consumption of methanol synthesis can reduce the power consumption by 15-30%.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to the technical field of synthesizing methanol from synthetic gas prepared from coal, coke oven gas, calcium carbide furnace tail gas, coalbed methane and shale gas and the comprehensive utilization of methanation, specifically a method for synthesizing methanol with syngas and co-production Methane systems and processes. Background technique [0002] At present, the entire domestic methanol industry has fallen into a crisis of structural overcapacity. According to the latest statistics from the China Nitrogen Fertilizer Industry Association, more than 5.5 million tons of new methanol plants were put into operation in 2012, with a total production capacity of more than 52 million tons, while the current annual methanol consumption is only about 22 million tons. The operating rate of domestic methanol enterprises has been lower than 60% for a long time, and some enterprises...

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 Patents(China)
IPC IPC(8): C07C1/12C07C9/04C07C31/04C07C29/151
Inventor 胡志彪张晓阳邹鑫胡高荣徐晓峰李倩黄宏邱传珪
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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