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Catalyst for pyrolysis of biomass and method for producing synthesis gas by pyrolysis of biomass
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A biomass pyrolysis and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. It can solve the problems of low energy consumption and low process economy, and achieve the effect of good application prospect, fast pyrolysis speed and high gasification efficiency.
Active Publication Date: 2019-01-08
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEMICALS CO LTD +1
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Problems solved by technology
However, the above-mentioned methods all have the problem that the catalyst is difficult to recycle and reuse, and in order to improve the H 2 / CO, consumes a lot of water vapor, increases energy consumption and gas consumption, and the process economy is not high
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Embodiment 1
[0034]Mix bio-semi-coke (carbon content 69.97%, hydrogen content 2.47%, oxygen content 25.6%, nitrogen content 1.89%, sulfur content 0.07%, bio-semi-coke graphitization degree 41.61%), nickel oxide and sodium hydroxide In the ball mill, the ball milling speed is 100 rev / min, and the ball milling treatment is at room temperature for 2 hours, then the pulverized and mixed mixture is dried at 150°C for 1 hour, and roasted at 300°C for 2 hours under nitrogen atmosphere to obtain the biomass pyrolysis catalyst MWP- 1. The mass percentage of biological semi-coke is 95%, nickel oxide 0.5%, potassium hydroxide 4.5%, dry for later use.
Embodiment 2
[0036] Mix bio-semi-coke (carbon content 80.5%, hydrogen content 1.99%, oxygen content 15.96%, nitrogen content 1.5%, sulfur content 0.05%, bio-semi-coke graphitization degree 50.71%), nickel oxide and sodium hydroxide In the ball mill, the ball milling speed is 150 rev / min, and the ball milling treatment is at room temperature for 8 hours, then the pulverized and mixed mixture is dried at 80°C for 4 hours, and roasted at 500°C for 6 hours under nitrogen atmosphere to obtain the biomass pyrolysis catalyst MWP- 2. The mass percentage of biological semi-coke is 80%, nickel oxide 2%, sodium hydroxide 18%, dry for later use.
Embodiment 3
[0038] Mix bio-semi-coke (carbon content 84.79%, hydrogen content 0.95%, oxygen content 12.17%, nitrogen content 2.02%, sulfur content 0.07%, bio-semi-coke graphitization degree 52.34%), nickel oxide and potassium hydroxide In the ball mill, the ball milling speed is 150 rev / min, and the ball milling treatment is at room temperature for 8 hours, then the pulverized and mixed mixture is dried at 80°C for 4 hours, and roasted at 500°C for 6 hours under nitrogen atmosphere to obtain the biomass pyrolysis catalyst MWP- 3. The mass percentage of biological semi-coke is 87.5%, nickel oxide 10%, potassium hydroxide 2.5%, dry for later use.
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Abstract
The invention discloses a biomass pyrolysis catalyst and a method for preparing a synthesis gas through biomass pyrolysis. Counted by the total weight of the catalyst, the biomass pyrolysis catalyst comprises 80-95% of biological semicoke, 0.5-10% of nickel oxide and 2.5-18% of family I and / or family II metal hydroxide. The invention further provides the method for preparing the synthesis gas through biomass pyrolysis. The method comprises the following steps: sending biomass and the biomass pyrolysis catalyst to a microwave reactor, performing pyrolyzing gasification, purifying a pyrolyzed product to obtain the biomass synthesis gas and a small amount of liquid tar, and performing activating regeneration on a solid in the reactor for recycling. The biomass pyrolysis catalyst is high in activity, simple in preparation method, and recyclable; when the synthesis gas is prepared by using the biomass pyrolysis catalyst, the pyrolyzing speed is high, the gas yield is high and the quality of the obtained gas product is high; requirements on synthesis of a liquid fuel can be met; the application prospect is good.
Description
technical field [0001] The invention relates to a biomass pyrolysis catalyst and a method for producing synthesis gas by pyrolysis of biomass. Background technique [0002] Biomass-to-syngas technology is one of the important ways to realize the deep-level and high-efficiency utilization of low-value biomass. Traditional gasification methods heat from the surface to the inside through radiation, convection and conduction. In order to avoid excessive temperature gradients, the heating rate is often not too fast, and the components of the material cannot be selectively heated, which hinders the directional conversion and synthesis of biomass. gas technology development. Compared with the traditional heating method, microwave heating can strengthen the heat transfer process inside the material due to its unique heat and mass transfer law and heating uniformity, so there is no special requirement for the size of the material, and the power consumption is proportional to the dia...
Claims
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Application Information
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