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

A method for removing hydrogen impurities in CO feed gas by a three-stage catalyst loading method

A catalyst and raw material gas technology, which is applied in the field of dehydrogenation and purification process of CO raw material gas in the coal-to-ethylene glycol technology, can solve the problems of high manufacturing cost, many hidden dangers in equipment safety, and high operating energy consumption, and achieves improved low-temperature dehydrogenation. efficiency, reducing the risk of high temperature sintering, and increasing the effect of the reaction temperature

Active Publication Date: 2021-09-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in industrial scale-up production, this type of reactor has problems such as high manufacturing cost, cumbersome process, high energy consumption in operation, and many equipment safety hazards, so it is difficult to apply to actual production
[0005] In order to solve the problems of reaction heat effect and side reactions difficult to control in the CO raw material gas selective oxidation dehydrogenation purification process, the present invention aims to develop a process method that is highly compatible with the reaction process

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
  • A method for removing hydrogen impurities in CO feed gas by a three-stage catalyst loading method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of three catalysts:

[0022] Weigh Al 2 o 3 The powder was placed in a palladium active component solution with a concentration of 0.02mol / L for 6h; after filtration, the product was dried in an oven at 100°C for 10h, and then placed in a muffle furnace for 8h at 250°C; the roasted product was mixed with chlorinated Ammonium was mixed at a molar ratio of 1:0.2, then placed in H 2 Treat at 350°C for 3h in the atmosphere to get PdCl x / Al 2o 3 , marked as GL-1, wherein the mass percentage of Pd is 1 wt%.

[0023] Weigh CeO 2 20 wt% CeO 2 -Al 2 o 3 The powder is placed in a palladium active component solution with a concentration of 0.02mol / L for 20 hours; after filtration, the product is dried in an oven at 100°C for 10 hours, and then baked in a muffle furnace at 450°C for 8 hours; the roasted product is soaked in Concentration of 0.1mol / L NaOH-NaHCO3 solution stirred for 6h, filtered and dried, placed in H 2 Treated at 180°C for 3h in the atmosphe...

Embodiment 2

[0029] The preparation method of catalyst is the same as embodiment 1.

[0030] Three-stage removal of H from CO feed gas 2 Impurities: The proportion of catalyst loading according to the number of moles of Pd is: GL-1=25%, GL-2=50%, GL-3=25%, sequentially fill 12.5g GL-3, 25g GL-2, 12.5g GL -1 in the bed, other with embodiment 1. The catalyst dehydrogenation results are shown in Table 1.

Embodiment 3

[0032] The preparation method of catalyst is the same as embodiment 1.

[0033] Three-stage removal of H from CO feed gas 2 Impurities: The ratio of catalyst loading to Pd moles is: GL-1=15%, GL-2=70%, GL-3=15%, and 7.5g GL-3, 35g GL-2, 7.5g GL are loaded sequentially -1 in the bed, other with embodiment 1. The catalyst dehydrogenation results are shown in Table 1.

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 provides a three-stage catalyst packing method for removing H in CO raw material gas 2 impurity method. According to the changing trend of the concentration of reactants and products in the whole catalyst bed and the difference of the reaction heat effect, the present invention designs and selects three catalysts with specific chemical structures and properties, and packs the three catalysts in the reaction bed in a specific order and proportion. Different concentration intervals of the layers, utilizing their respective chemical properties, provide synergistic control over the thermal effects of the reaction and the rate of side reactions. The three-stage catalyst packing method provided by the present invention removes H in CO feed gas 2 The process method for impurities can reduce the reaction temperature of the catalyst from 145-150°C in the prior art to 125-130°C on the basis of not increasing the cost of catalyst preparation and process equipment, which can greatly reduce energy consumption, while reducing The thermal sintering risk of the catalyst is helpful to prolong the service life and replacement cycle of the industrial catalyst, and has the prospect of large-scale industrial application.

Description

technical field [0001] The invention belongs to the technical field of coal-to-ethylene glycol, and is suitable for the dehydrogenation and purification process of CO raw material gas obtained by using fossil resources or organic matter as raw materials, such as coal gasification, methanol cracking, methane reforming, etc., and is especially suitable for the coal-to-ethylene glycol technology Dehydrogenation purification process of medium CO feed gas. Background technique [0002] In the implementation process of coal-to-ethylene glycol technology, coal first needs to be gasified and reformed to obtain CO / H 2 The mixed gas is separated by pressure swing adsorption to obtain CO raw material gas. However, due to the constraints of separation efficiency and other factors, there is still a certain concentration of H in the CO raw gas obtained at this time. 2 Impurities. In order to avoid the catalyst deactivation and the increase of by-products in the process of CO oxidative ...

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): C01B32/40C01B5/00C01B32/50
CPCC01B5/00C01B2210/0004C01B2210/0053C01B32/40C01B32/50
Inventor 姚元根乔路阳周张锋宗珊珊崔国静吴娟许东杰
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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