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Layered material distribution moving bed reaction device and use method

A reaction device, layered cloth technology, applied in the direction of feeding devices, chemical instruments and methods, nano-carbon, etc., can solve the problem of low utilization rate of catalyst and raw material gas, poor product gas carry-out, production preparation time and post-processing Long time and other problems, to achieve the effect of improving conversion rate and catalyst utilization rate, increasing effective contact area, and avoiding conversion rate reduction

Active Publication Date: 2022-05-31
无锡碳谷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The common problems of these reactors include: low mass transfer efficiency: (1) There is no design for the catalyst bed distribution, and single-layer packing is generally used. Resulting in reduced utilization of catalyst and feed gas
The contact area between the catalyst and the feed gas is limited; the contact with the catalyst is not sufficient, and the effective utilization rate is low
(2) The product gas is not carried out smoothly, which leads to the left shift of the decomposition reaction balance and the low conversion rate of biogas
[0004] adopts intermittent operation mode, the equipment cannot realize continuous production, and the production preparation time and post-processing time are too long, resulting in a great reduction in equipment utilization
At the same time, product collection and separation are difficult

Method used

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  • Layered material distribution moving bed reaction device and use method
  • Layered material distribution moving bed reaction device and use method
  • Layered material distribution moving bed reaction device and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0080] Using the layered distribution moving bed reaction device of the present invention, the bottom of the quartz reaction tube 01 is filled with 30 cm high carbon nanotubes through the distributor 03, so that the top of the filled layer of carbon nanotubes is located in the heat preservation area of ​​the heating furnace 02.

[0081] Use the dispenser 03 to spread the helical multi-layer distributed catalyst and carbon nanotube stack on the filled layer of carbon nanotubes, so that the thickness of the single layer of catalyst is 0.1-1mm, and the thickness of the single layer of carbon nanotubes is 3-10mm. Through the control system 06, the nitrogen and hydrogen are passed into the mixing tank 07 at the speed of 120L / h and 60L / h respectively, and the temperature of the heating furnace 02 is set at 600±10°C, and the reduction time is 20min. MOx+xH2→M+xH2O.

[0082] Through the control system 06, biogas (CH4:H2=10:1) is introduced into the mixing tank 07 at a flow rate of 120...

Embodiment example 2

[0086] Using the layered distribution moving bed reaction device of the present invention, the bottom of the quartz reaction tube 01 is filled with 30 cm high carbon nanotubes through the distributor 03, so that the top of the filled layer of carbon nanotubes is located in the heat preservation area of ​​the heating furnace 02.

[0087] Use the dispenser 03 to spread the helical multi-layer distributed catalyst and carbon nanotube stack on the filled layer of carbon nanotubes, so that the thickness of the single layer of catalyst is 0.1-1mm, and the thickness of the single layer of carbon nanotubes is 3-10mm. Through the control system 06, the nitrogen and hydrogen are passed into the mixing tank 07 at the speed of 120L / h and 60L / h respectively, and the temperature of the heating furnace 02 is set at 600±10°C, and the reduction time is 20min. MOx+xH2→M+xH2O.

[0088]Through the control system 06, biogas (CH4:H2=10:1) is introduced into the mixing tank 07 at a flow rate of 180L...

Embodiment example 3

[0092] Using the layered distribution moving bed reaction device of the present invention, the bottom of the quartz reaction tube 01 is filled with 30 cm high carbon nanotubes through the distributor 03, so that the top of the filled layer of carbon nanotubes is located in the heat preservation area of ​​the heating furnace 02.

[0093] 40 g of the catalyst was sprinkled at one time on the packed layer of carbon nanotubes using the distributor 03 . Through the control system 06, the nitrogen and hydrogen are passed into the mixing tank 07 at the speed of 120L / h and 60L / h respectively, and the temperature of the heating furnace 02 is set at 600±10°C, and the reduction time is 20min. MOx+xH2→M+xH2O.

[0094] Through the control system 06, biogas (CH4:H2=10:1) is introduced into the mixing tank 07 at a flow rate of 120L / h, the temperature of the heating furnace 02 is 650±10°C, and the decomposition reaction time is 4 hours. CH4→C+2H2↑

[0095] The discharge auger 051 pushes out...

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Abstract

The invention discloses a layered material distribution moving bed reaction device and a use method, which can improve the diffusion uniformity of raw material gas in a catalyst bed layer, promote effective contact between a catalyst and the raw material gas and avoid a bias flow phenomenon. The bed layer of the catalyst is changed from single-layer stacking to multi-layer staggered stacking, so that the effective contact area between the bed layer of the catalyst and the feed gas is increased, the conversion rate of the feed gas and the utilization rate of the catalyst are improved, and higher production efficiency is obtained. The heating furnace covers the outer surface of the quartz reaction tube; the distributing device is arranged in the top of the quartz reaction tube, the distributing device comprises a first distributing wheel and a second distributing wheel, the bottom of the first discharging tube protrudes to form a conical first distributing cabin, and an outlet of the second discharging tube directly faces a first cambered surface of the surface of the first distributing cabin; the material distributing assembly comprises a first motor, a first material distributing wheel and a second material distributing wheel are arranged on an output shaft of the first motor, the spiral conveyor comprises a second motor, and a discharging auger is connected to an output shaft of the second motor.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a layered cloth moving bed reaction device and a using method. Background technique [0002] In the technical field of producing carbon nanotubes by catalytic cracking of biogas (biogas or pure methane) as raw material gas, the currently published reactors for industrial production mainly include fixed bed and fluidized bed. reactor. [0003] Common problems in these reactors include: low mass transfer efficiency: (1) lack of design for catalyst bed distribution, and single-layer stacked packing is generally used, resulting in reduced utilization of catalyst and feed gas. The contact area between the catalyst and the raw material gas is limited; the contact with the catalyst is not sufficient, and the effective utilization rate is low. (2) The product gas is not carried out smoothly, which leads to the leftward shift of the decomposition reaction balance...

Claims

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Application Information

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IPC IPC(8): B01J4/00B01J8/08B01J8/10C01B32/16
CPCB01J8/085B01J8/082B01J8/10B01J4/001
Inventor 王斌雷天辉郁志新
Owner 无锡碳谷科技有限公司