A kind of preparation method rich in light aromatic hydrocarbon bio-oil
A technology of light aromatics and bio-oil, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, etc., can solve the problems of affecting the service life of the catalyst, the easy deactivation of the catalyst, and the irreversible deactivation of the catalyst, so as to achieve easy separation and low component content The effect of high and low water content
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Embodiment 1
[0030] First weigh a certain amount of silica sol and add water to dilute to 5% aqueous sol solution, then add а-Al to the silica sol solution 2 o 3 Powder (diameter less than 1μm), ZrO 2Powder (diameter less than 0.5 μm), then add appropriate amount of ethanol, put it into a ball mill for wet grinding. After wet milling for 24 hours, dry it. The powder passed through a 60-mesh sieve is calcined at 600°C for 2 hours, and then shaped as required. The molded body was sintered at 1200°C for 2 hours in the atmosphere, and then slowly cooled to room temperature with the furnace temperature. Two kinds of microwave additives TC-1 and TC-2 were prepared according to the different proportions of raw materials, and the composition of TC-1 was 65%Al 2 o 3 , 35%SiO2 2 , 5%ZrO 2 , TC-2 composition is 85%Al 2 o 3 , 10%SiO2 2 , 5%ZrO 2 .
Embodiment 2
[0032] Mix 100g wood chips (5mm) with TC-1 according to the mass ratio of 1:0.1 and send them into the microwave cracking reactor. First, the biomass was preheated at 120°C for 30 minutes, and the power density was 1×10 5 W / m 3 , then heat up to 450°C for 4 minutes, and then heat up to 610°C until no gas is generated. The power density of the entire pyrolysis process is 4×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed to obtain a total of 52.4g of bio-oil, and the yield of light aromatics was 5.2% (relative to the dry basis of biomass).
Embodiment 3
[0034] Mix 100g wood chips (5mm) with TC-2 according to the mass ratio of 1:1 and send them into the microwave cracking reactor. First, the biomass was preheated at 220°C for 5 minutes, and the power density was 3×10 5 W / m 3 , then heat up to 350°C for 9 minutes, and then heat up to 680°C until no gas is generated. The power density of the whole pyrolysis process is 10×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed to obtain a total of 56.6 g of bio-oil, and the yield of light aromatics was 9.5% (relative to the dry basis of biomass).
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