Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Externally heated medium and high pressure process and apparatus for synthesizing material ammonia with methanol and methane

A methanol synthesis tower and methanation technology, which is applied in the production of hydrogen, etc., can solve the problems of large increase in the amount of air released from synthetic ammonia, incomplete refining of raw material gas, and increased air release from ammonia, so as to achieve good catalyst protection and high production capacity. Large, high alcohol-ammonia ratio effect

Inactive Publication Date: 2008-07-16
ZHEJIANG UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the disadvantages of the prior art that the ratio of alcohol and ammonia generated by methanation is low, the methanol production capacity is low, the raw material gas is not completely refined, the methane generated by methanation is relatively high, and the amount of air released from synthetic ammonia increases a lot, the present invention adopts the "external heating method" The new process of medium and high pressure methanol and methanation, that is, medium pressure co-alcohol with high alcohol-ammonia ratio - high-pressure methanolylation of alcohol gas after low-carbon oxides - high-pressure methanation process with low methane, and the shortcomings of the methanation process The heat is provided by steam (or electric) heating, increasing the ratio of alcohol to ammonia, making the methanol production capacity higher, and making the raw material gas refined thoroughly, the methane generated by methanation is lower, and the air volume of synthetic ammonia is increased the least.

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
  • Externally heated medium and high pressure process and apparatus for synthesizing material ammonia with methanol and methane
  • Externally heated medium and high pressure process and apparatus for synthesizing material ammonia with methanol and methane
  • Externally heated medium and high pressure process and apparatus for synthesizing material ammonia with methanol and methane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 , Fig. 6, a kind of method for the synthesis ammonia raw material gas of external heat formula, high-pressure methanol, methanation, the step of this method comprises:

[0038] (1), medium-pressure co-alcohol: take medium-pressure co-alcohol for the feed gas, the medium pressure is 10-12Mpa, and the synthesis gas mainly includes nitrogen, hydrogen, carbon monoxide and carbon dioxide;

[0039] (2) Compression: compress the outlet gas of the alcohol unit, and the high pressure is ~ 30Mpa;

[0040] (3), high-pressure methanolylation: at low space velocity ~ 6000h -1 1. Under the condition of a high pressure of ~30Mpa, methanol is synthesized in a high-pressure methanol synthesis tower, passed into a methanol separator for separation, and methanol is produced, and the raw material gas is initially refined to produce alcohol gas;

[0041] (4) High-pressure methanation: the post-alcohol gas is passed into the primary inlet of the high-pressure methanation ...

Embodiment 2

[0051] refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Fig. 6, a kind of device of external heating type medium and high pressure methanol, methanation synthesis ammonia raw material gas, described device comprises medium-pressure alcohol-linked equipment, high-pressure machine, high-pressure methanoly equipment, high-pressure methanation equipment and ammonia synthesis equipment, The high-pressure methanation equipment includes a high-pressure methanation tower (A), an external heat exchanger (B) and a heater (C), and the primary outlet of the high-pressure methanation tower (A) is sequentially connected to the external heat exchanger device (B), heater (C), the gas outlet of the heater (C) is connected to the secondary inlet of the high-pressure methanation tower.

[0052] Referring to Fig. 6, the high-pressure methanation equipment also includes a water cooler (D), an ammonia cooler (E) and a gas-water separator (F), and the secondary outlet of the hi...

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 is externally heated medium and high pressure process and apparatus for synthesizing material ammonia gas with methanol and methane. The apparatus includes medium pressure combined methanol synthesizing apparatus with serially and parallelly connected towers; high pressure methanolizing apparatus comprising oil separator, water cooler and high efficiency methanol separator; and externally heated high pressure methanating apparatus comprising methanating tower, heat exchanger outside the tower, steam heater, water cooler, ammonia cooler and gas-water separator. The apparatus has the advantages of high alcohol / ammonia ratio, complete refining of synthesized material ammonia gas, low CH4 in produced inert gas, low heat consumption, etc.

Description

(1) Technical field [0001] The invention belongs to a chemical production device related to a gas-solid phase catalytic reactor, and is mainly used for methanol synthesis and refining raw material gas for ammonia synthesis. (2) Background technology [0002] Medium-pressure co-alcohol is a technology commonly used in medium and small ammonia plants in my country. It co-produces part of methanol under the condition of mainly synthetic ammonia. load. [0003] Copper washing method can remove residual CO and CO in raw gas 2 , is a main method for refining raw material gas in my country's synthetic ammonia industry for a long time. Although this technology is very mature in my country's production, this method consumes a lot of metal copper due to high energy consumption, and it also pollutes the environment. , equipment investment is also large. With the large-scale production scale, this process is becoming more and more unsuitable for the situation. The methanation process ...

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): C01B3/02
Inventor 刘华彦陈运根程榕郑燕萍莫仙军喻旭春欧阳航
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com