Method for preparing combustible gas from radix codonopsis dreg
A technology of medicinal residues and Codonopsis ginseng, which is applied in the field of preparing combustible gas from Codonopsis medicinal residues, can solve the problems of low yield of combustible gas, poor catalytic biomass effect, etc., and achieve the effects of promoting resource recycling, controllable conditions and reducing production costs.
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[0037] The preparation method of described pyrolysis catalyst comprises the following steps:
[0038] S31: Mix alkaline clay, cerium oxide, lanthanum oxide, cobalt oxide, nickel oxide, titanium oxide, aluminum oxide, zinc oxide, barium oxide, magnesium oxide, and silica sol at a stirring speed of 80-180r / min for 6-10min , to obtain spherical particles I;
[0039] The preparation method of alkaline clay described in step S31, comprises the following steps:
[0040] S311: mix bentonite and activated clay wastewater with a concentration of 10% at a weight ratio of 2:9, and stir evenly at a rotating speed of 300r / min to obtain slurry material I;
[0041] S312: Add the slurry material I prepared in step S311 to the inorganic mixed acid with a concentration of 16%, the inorganic mixed acid is phosphoric acid with a concentration of 19wt%, hydrochloric acid with a concentration of 38wt%, and sulfuric acid with a concentration of 27wt% by volume Mixed acid composed of 3:3:2, the wei...
Embodiment 1
[0052] A method for preparing combustible gas from Codonopsis dregs, comprising the following steps:
[0053] S1: Dried Codonopsis dregs was dried with hot air to a water content of 14% to obtain dried dregs. The hot air was obtained by heat exchange between coal flue gas and air, and the temperature of the coal flue gas was 1000°C. The air temperature is 20°C, and the hot air temperature is 420°C;
[0054] S2: Pulverize the dried Codonopsis dregs prepared in step S1, and pass through a 500-mesh sieve to obtain pulverized dried Codonopsis dregs;
[0055] S3: Mix the dried Codonopsis dregs prepared in step S2 with the pyrolysis catalyst for 12 minutes at a stirring speed of 220r / min to prepare mixture I. The mass ratio of the dried Codonopsis dregs to the pyrolysis catalyst is: 240:2, the pyrolysis catalyst is in parts by weight, including the following raw materials: 24 parts of alkaline clay, 4 parts of cerium oxide, 4 parts of lanthanum oxide, 2.5 parts of cobalt oxide, 1.5...
Embodiment 2
[0070] A method for preparing combustible gas from Codonopsis dregs, comprising the following steps:
[0071] S1: Dried Codonopsis dregs is dried with hot air to a moisture content of 12% to obtain dried dregs. The hot air is obtained by heat exchange between coal flue gas and air, and the temperature of the coal flue gas is 820°C. The air temperature is 10°C, and the hot air temperature is 280°C;
[0072] S2: Pulverize the dried Codonopsis dregs prepared in step S1, and pass through a 300-mesh sieve to obtain a pulverized dried Codonopsis dregs;
[0073] S3: Mix the dried Codonopsis dregs prepared in step S2 with the pyrolysis catalyst for 13 minutes at a stirring speed of 90 r / min to prepare mixture I. The mass ratio of the dried Codonopsis dregs to the pyrolysis catalyst is: 190:1, the pyrolysis catalyst is in parts by weight, including the following raw materials: 10 parts of alkaline clay, 3 parts of cerium oxide, 3 parts of lanthanum oxide, 2 parts of cobalt oxide, 1 pa...
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