Isothermal conversion process of high-concentration carbon monoxide and system thereof

A technology of carbon monoxide and isothermal conversion, which is applied in the field of temperature conversion process and its system, can solve the problems affecting the stability of catalyst service life, high bed hot spot temperature, and catalyst bed overtemperature, so as to save equipment investment and operating cost, Reduce system resistance and improve system stability

Inactive Publication Date: 2015-06-17
WUHUAN ENG
View PDF3 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The shift reaction is an exothermic reaction. The traditional shift process uses an adiabatic shift reactor. The shift reaction of high-concentration carbon monoxide often causes the overheating of the catalyst bed due to the excessive reaction driving force, which seriously affects the service life of the catalyst and the stability of operation.
In order to solve this problem, a high water-gas ratio process or a low water-gas ratio process is generally adopted. In the high water-gas ratio process, the water-gas ratio and carbon monoxide content of the raw material gas are very high...

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
  • Isothermal conversion process of high-concentration carbon monoxide and system thereof
  • Isothermal conversion process of high-concentration carbon monoxide and system thereof
  • Isothermal conversion process of high-concentration carbon monoxide and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as Figure 4 As shown, the temperature of the feed gas from a pulverized coal gasification unit (chilling process) is 208°C, the pressure is 3.7MpaG, and the volume content of carbon monoxide on a dry basis is 71.2%. The feed gas first passes through the feed gas separator 1 to separate the entrained moisture. Then pass through the feed gas filter 2 to remove dust and toxic substances harmful to the catalyst, and the filtered feed gas enters the shell side of the air-cooled shift reactor 3 and is preheated to 260°C before entering the 1# water-cooled shift reactor 4 (this implementation In the example, a floating head type water-cooled shift reactor) is used for the shift reaction, and the reaction temperature is controlled at 270°C. The medium-pressure boiler feed water enters the 1# water-cooled shift reactor 4 at the lower part, and passes through the by-product medium-pressure steam in the medium-pressure steam drum 5 (Pressure is 4.2MpaG, temperature is 255 ℃)...

Embodiment 2

[0055] Such as Figure 5 As shown, the temperature of the feed gas from a coal-water slurry gasification unit is 215°C, the pressure is 4.1MpaG, and the volume content of carbon monoxide on a dry basis is 47.6%. The raw material gas first passes through the raw material gas separator 1 to separate the entrained moisture, and then passes through the raw gas filter 2 to remove dust and toxic substances harmful to the catalyst. The filtered raw gas enters the shell side of the air-cooled shift reactor 3 and is preheated to 260 After entering the 1# water-cooled shift reactor 4 (in this embodiment, a plate-type water-cooled shift reactor) for the shift reaction, the reaction temperature is controlled to be 270° C., and the medium-pressure boiler feed water enters the 1# water-cooled shift reactor 4 at the lower part. In the medium-pressure steam drum 5, the reaction heat of the shift reaction is removed by producing medium-pressure steam (with a pressure of 4.2MpaG and a temperatu...

Embodiment 3

[0059] Such as Figure 6 As shown, the temperature of raw gas from a pulverized coal gasification unit (waste boiler process) is 170°C, the pressure is 3.7MPaG, and the volume content of carbon monoxide on a dry basis is 64.1%. The raw material gas first passes through the raw material gas separator 1 to separate the entrained moisture, and then passes through the raw gas filter 2 to remove dust and toxic substances harmful to the catalyst. The filtered raw gas enters the shell side of the air-cooled shift reactor 3 and is preheated to 200 After entering the 1# water-cooled shift reactor 4 (in this embodiment, a floating head type water-cooled shift reactor) for the shift reaction, the reaction temperature is controlled to be 270°C, and the medium-pressure boiler feed water enters the 1# water-cooled shift reactor 4 at the lower part , in the medium-pressure steam drum 5, the heat of reaction of the shift reaction is removed by by-product medium-pressure steam (the pressure is...

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 discloses an isothermal conversion process of high-concentration carbon monoxide and a system thereof, and solves the problems of long procedure period, high system resistance and short in catalyst life in the existing conversion process. According to the adopted technical scheme, raw material gas flows through a raw material gas separator, so that water carried by the raw material gas is separated; then the raw material gas is filtered by a filter, and then is introduced into a shell side of a gas cooling conversion reactor to be preheated; the preheated raw material gas is introduced into a water cooling conversion reactor I to carry out conversion reaction; steam pocket byproduct steam is used for removing reaction heat of the conversion reaction; conversion gas out of the water cooling conversion reactor I is returned to the shell side of the gas cooling conversion reactor to preheat the raw material gas in the shell side,, so s to remove the reaction heat and continue to carry out conversion reaction; the conversion gas out of the gas cooling conversion reactor is further subjected to heat recycling, and after the condensed liquid is separated, the conversion gas is subsequently introduced into the downstream process. The isothermal conversion process of high-concentration carbon monoxide is simple in process, high in system reliability, low in methanation side reaction, short in process, low in system resistance, long in service life of catalyst, and low in equipment investment and operation cost.

Description

technical field [0001] The invention relates to an isothermal transformation process and a system thereof, in particular to a high-concentration carbon monoxide isothermal transformation process and a system thereof. Background technique [0002] my country is a country rich in coal resources and relatively scarce in petroleum resources. The efficient utilization of coal resources has important strategic significance for our country. Since the beginning of the 21st century, my country's coal chemical industry has entered a stage of rapid development, and coal is used as raw material to produce synthetic ammonia. Urea, hydrogen production, synthetic methanol, ethylene glycol, synthetic natural gas and other technologies have been vigorously developed. [0003] The carbon monoxide shift process is an indispensable part of modern coal chemical technology. Its main function is to adjust the ratio of carbon monoxide and hydrogen in the synthesis gas through the shift reaction to m...

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
IPC IPC(8): C01B3/12
Inventor 王照成肖敦峰李繁荣徐建民夏吴谢德虎
Owner WUHUAN ENG
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