Metal catalytic reactor, preparation of metal catalytic reactor and application of metal catalytic reactor in preparation of synthesis gas by reforming natural gas and CO2 dry gas

A technology of metal catalysis and reactor, which is applied in the field of catalysis, can solve the problems of restricting the long-term operation of the catalyst, easy carbon deposition and sintering of Ni-based catalysts, etc., and achieve high methane and carbon dioxide conversion rates, no bed pressure drop, and dispersed uniform effect

Pending Publication Date: 2022-07-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are no reports on the successful industrialization of methane dry reforming related technologies at home and abroad. The main reason is that the Ni-based catalyst used in this reaction is prone to carbon deposition and sintering, which greatly limits the long-term operation of the catalyst.

Method used

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  • Metal catalytic reactor, preparation of metal catalytic reactor and application of metal catalytic reactor in preparation of synthesis gas by reforming natural gas and CO2 dry gas
  • Metal catalytic reactor, preparation of metal catalytic reactor and application of metal catalytic reactor in preparation of synthesis gas by reforming natural gas and CO2 dry gas
  • Metal catalytic reactor, preparation of metal catalytic reactor and application of metal catalytic reactor in preparation of synthesis gas by reforming natural gas and CO2 dry gas

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Experimental program
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Effect test

Embodiment 1

[0042] Inconel 601 alloy pipe (inner diameter 10 outer diameter 14, id10od14) was selected, cooked in 15% NaOH solution, deoiled for 1 hour, rinsed with distilled water, dried at room temperature, and then heated at 300 ° C and continuous flow of 200 ml / min. N 2 Treated in the atmosphere for 2h. Then, the temperature is 500 ℃ in high-purity hydrogen atmosphere for 2.5 hours, and the blank metal catalytic reactor is obtained, that is, a blank is obtained. Metal catalytic reactor.

Embodiment 2

[0044] Electrochemical Deposition

[0045] GH3030 alloy pipe (inner diameter 15 outer diameter 20, id15od20) was selected, cooked in 15% NaOH solution, deoiled for 1 hour, rinsed with distilled water, dried at room temperature, and then heated at 300 ° C and continuously flowing 200 ml / min of N 2 Treated in the atmosphere for 2h. Formulated with 10% RuCl 3 Add 20ml of 0.1mol / L citric acid to the aqueous solution, adjust the pH to 4.5 with hydrochloric acid, connect a 0.5mm platinum wire as the anode, connect the GH3030 alloy tube as the cathode, and connect the power supply. The distance between the platinum wire and the alloy tube is 2cm. The constant current mode was used, the current was set to 20 mA, and the Ru-deposited GH3030 alloy pipe was obtained after 0.5 hours of deposition. Subsequently, the temperature was 500 °C in a high-purity hydrogen atmosphere for 2 hours, and a thin layer of Ru dopant with a thickness of 100 nm was formed on the contact surface of the rea...

Embodiment 3

[0047] Electrochemical Deposition

[0048] GH3030 alloy pipe (inner diameter 12 outer diameter 16, id12od16) was selected, cooked in 15% NaOH solution, deoiled for 1 hour, rinsed with distilled water, dried at room temperature, and then heated at 300°C and continuously flowing 200ml / min of N 2 Treated in the atmosphere for 2h. Formulated with 10% RuCl 3 and 15% FeCl 3 Add 30ml of 0.1mol / L citric acid, adjust pH to 4.5 with hydrochloric acid, connect 0.5mm platinum wire as anode, connect GH3030 alloy tube as cathode, connect power supply, the distance between platinum wire and alloy tube is 2cm. The constant current mode was used, and the current was set to 25 mA. After 0.5 hours of deposition, Ru and Fe deposited GH3030 alloy pipes were obtained. Subsequently, the temperature was 500 °C in a high-purity hydrogen atmosphere for 2 hours to form a thin layer of Ru and Fe dopants with a thickness of 110 nm on the contact surface of the reactor, and then naturally cooled to obta...

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Abstract

The invention relates to a metal catalytic reactor as well as preparation and application thereof in preparation of synthesis gas by reforming natural gas and CO2 dry gas, a contact surface of a metal tube and a reaction raw material is coated and doped with a catalyst active component, a catalytic dopant thin layer is formed on the contact surface of the metal tube and the reaction raw material, and the metal catalytic reactor is obtained. The metal reactor is used for reforming reaction of natural gas and CO2 dry gas, and can realize efficient conversion of methane and carbon dioxide, high catalyst stability and low carbon deposition generation. According to the invention, the conversion rate of methane is 80-96%; the conversion rate of carbon dioxide is 80-98%; the selectivity of carbon monoxide is greater than 99%; cO / H2 = 1; and carbon deposition is low. The method has the characteristics of long catalyst service life, high methane conversion rate and product selectivity, low carbon deposition, no need of catalyst amplification, small industrialization difficulty, easy product separation, good process repeatability, safe and reliable operation and the like, and has a wide industrial application prospect.

Description

technical field [0001] The invention belongs to the field of catalysis, in particular to a metal catalytic reactor and its preparation and catalytic conversion of natural gas and CO 2 Application in dry gas reforming to syngas, the process realizes natural gas and CO 2 Efficient one-step conversion with excellent catalyst stability and low carbon formation. Background technique [0002] Catalytic methane and carbon dioxide reforming (Dry Reforming of Methane, DRM) to syngas (CO and H 2 ) is considered to be the best reaction path. This route can greatly improve the conversion efficiency of methane, and the obtained syngas H with great industrial value 2 / CO≈1, it can be directly used as the raw material gas for Fischer-Tropsch synthesis, low-carbon olefin synthesis, dimethyl ether synthesis and oxo synthesis, etc., and can be easily integrated with the related technologies of coal chemical industry, which has huge economic and environmental benefits. [0003] As early as...

Claims

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Application Information

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IPC IPC(8): B01J19/32B01J19/00C01B3/40
CPCB01J19/32B01J19/0053C01B3/40C01B2203/0238C01B2203/0227C01B2203/1041C01B2203/1241Y02P20/52
Inventor 包信和郭晓光潘秀莲于洪飞
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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