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Optical coupling microwave catalytic system applied to biomass pyrolysis and biomass pyrolysis equipment

A technology of biomass pyrolysis and microwave catalysis, which is applied in the direction of catalytic treatment of combustible gases, catalyst activation/preparation, preparation of liquid hydrocarbon mixtures, etc., to achieve efficient utilization, improve quality, and reduce production costs.

Pending Publication Date: 2021-03-16
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that microwave catalytic upgrading can significantly increase the hydrocarbon content of bio-oil, but this upgrading is achieved at the expense of bio-oil yield

Method used

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  • Optical coupling microwave catalytic system applied to biomass pyrolysis and biomass pyrolysis equipment
  • Optical coupling microwave catalytic system applied to biomass pyrolysis and biomass pyrolysis equipment
  • Optical coupling microwave catalytic system applied to biomass pyrolysis and biomass pyrolysis equipment

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Effect test

preparation example Construction

[0042] More specifically, the catalytic plate is prepared by loading a layer of deoxidation catalyst on the surface of porous foam ceramics, and then dispersing and loading a layer of photocatalyst on the outer layer of the deoxidation catalyst. The specific preparation method is as follows:

[0043] (1) Preparation of porous ceramic foam: After mixing SiC and TiC in proportion, mix them by low-speed ball milling for 0.5-2 hours to prepare ceramic aggregate; mix ceramic aggregate and aluminum dihydrogen phosphate according to 1:1-4:1 and add kaolin and Prepare the slurry with deionized water; stir and mix the slurry at room temperature for 12-48 hours; add deionized water according to the solid content of the slurry at 60-80%.

[0044] (2) After cutting the polyurethane foam into the required shape and size, soak it with 8%-20% sodium hydroxide solution and rub it for 1-3 hours, then wash it and then impregnate it with 0.5%-3% sodium carboxymethyl cellulose solution Standby afte...

Embodiment 1

[0054] In the catalytic plate preparation step (1), the ratio of SiC to TiC is 1:0, the ball milling time is 1 hour, the ratio of ceramic aggregate to aluminum dihydrogen phosphate is 2:1, the solid content of the slurry is 80%, and the time for trapping It was 24 hours; the sodium hydroxide concentration was 16% in the step (2), the soaking time was 2 hours, the sodium carboxymethyl cellulose solution concentration was 2%, and the soaking time was 2 hours; the preform was dried at room temperature in the step (4) After 24 hours, dry in an oven for 12 hours, and the final temperature of calcination is 1200°C; the compound raw materials in step (5) are magnesium oxide and aluminum oxide mixed at 10:1 and ball milled for 1 hour, 0.2 parts of polyvinyl alcohol, carboxymethyl cellulose 0.5 part, 0.5 part of alkaline silica sol, the solid content rate of the slurry is 55%; the drying time at room temperature is 18 hours each time after the ceramic foam is slurryed in the step (6), a...

Embodiment 2

[0059] In the catalytic plate preparation step (1), the ratio of SiC to TiC is 1:0, the ball milling time is 1 hour, the ratio of ceramic aggregate to aluminum dihydrogen phosphate is 2:1, the solid content of the slurry is 80%, and the time for trapping It was 24 hours; the sodium hydroxide concentration was 16% in the step (2), the soaking time was 2 hours, the sodium carboxymethyl cellulose solution concentration was 2%, and the soaking time was 2 hours; the preform was dried at room temperature in the step (4) After 24 hours, dry in an oven for 12 hours, and the final temperature of calcination is 1200°C; the compound raw materials in step (5) are magnesium oxide, calcium oxide and aluminum oxide mixed and ball milled for 1 hour according to 5:5:1, 0.2 parts of polyvinyl alcohol, 0.5 part of carboxymethyl cellulose, 0.5 part of alkaline silica sol, the solid content rate of the slurry is 55%; the drying time at room temperature is 18 hours each time after the foam ceramics ...

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Abstract

The invention discloses an optical coupling microwave catalytic system applied to biomass pyrolysis. The optical coupling microwave catalytic system is characterized in that a light source is arrangedin a vacuum inter-layer pipe in the middle of a catalytic system, the light source is a pulse strong light source, catalytic plates with catalytic activity are arranged around the light source, and each catalytic plate takes a porous foamed ceramic plate as a carrier and is loaded with two or more metal oxide catalysts with catalytic activity. The photocatalytic activity is adjusted by adjustingthe light source intensity, the pulse width, the pulse frequency and the photo-catalyst loading capacity; the catalytic activity of the de-oxidation catalyst is adjusted by adjusting the porosity, theskeleton strength, the catalyst loading capacity and the microwave power of the porous foamed ceramic. The method can be directly applied to steam upgrading after biomass pyrolysis, the de-oxidationefficiency is improved, tar is reduced, the quality of pyrolytic bio-oil and biogas is effectively improved, the service life is prolonged, and the production cost is reduced through synergistic catalysis of photo-catalyst catalytic hydrogen release and metal oxide catalytic de-oxidation.

Description

technical field [0001] The invention relates to the fields of photocatalysis and microwave catalysis, in particular to an optical coupling microwave catalysis system and biomass pyrolysis equipment applied to biomass pyrolysis. Background technique [0002] The development and utilization of biomass resources is of great significance to alleviate the depletion of non-renewable resources and environmental problems. Thermochemical conversion, especially catalytic pyrolysis is one of the important means of biomass conversion. The introduction of a catalytic system can effectively improve the quality of bio-oil and reduce the tar content in the gas. Commonly used catalysts include molecular sieve catalysts, metal oxide catalysts, and metal salt catalysts. Molecular sieve catalysts, such as ZSM-5, exhibit excellent aromatization and deoxidation capabilities; metal oxide catalysts, such as CaO, MgO, exhibit good deoxidation capabilities. At present, catalysts are easily deactiva...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B53/00C10G1/02C10K3/02C04B35/565C04B35/56C04B35/622C04B38/06C04B41/89B01J27/224B01J21/06B01J37/02B01J37/08
CPCC10B53/02C10B53/00C10G1/086C10G1/02C10K3/023C04B35/565C04B35/56C04B35/622C04B38/0615C04B41/89C04B41/52B01J27/224B01J21/063B01J23/002B01J37/0207B01J37/082C04B2235/349C04B2235/3217C04B2235/6562C04B2235/6567B01J2523/00C10G2300/1003C10G2300/1014B01J35/39C04B41/5035C04B41/5031C04B41/5029C04B41/4539C04B41/4543C04B41/0072C04B41/5041C04B41/4535B01J2523/22B01J2523/31B01J2523/41B01J2523/23B01J2523/48Y02E50/10
Inventor 吴秋浩王允圃徐佳敏马晨露柯林垚刘玉环李志李薇彭渝洁杨琦
Owner NANCHANG UNIV
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