A method and device for preparing gas from garbage charcoal
A garbage charcoal and gas technology, applied in the direction of manufacturing combustible gas, granular/powdered fuel gasification, climate sustainability, etc., can solve the problems of poor adaptability, reduce gas cost, reduce specific oxygen consumption and specific coal consumption, low cost effect
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Embodiment 1
[0052] Prepare gas as follows:
[0053] (1) Get garbage charcoal, after crushing and sieving pretreatment successively, obtain the gasification raw material whose particle diameter is greater than 6mm and is less than 1% of the total amount;
[0054] (II) Under the action of a gasification agent at 600°C, the gasification raw material undergoes primary pyrolysis gasification at 850°C, and then performs secondary pyrolysis gasification at 1000°C to obtain high-temperature gas and ash;
[0055] At the same time, the obtained ash is exchanged with softened cold water, and after the ash is cooled to room temperature, the cold ash is obtained;
[0056] (III) Carrying out high-temperature dust removal on the high-temperature gas to remove fly ash to obtain a once-purified high-temperature gas with a temperature of 1000° C.;
[0057] At the same time, the obtained fly ash is used as a gasification raw material, and is subjected to cyclic pyrolysis and gasification through step (II);...
Embodiment 2
[0063] Prepare gas as follows:
[0064] (1) Get garbage charcoal, after crushing and sieving pretreatment successively, obtain the gasification raw material that the particle that particle diameter is greater than 6mm is less than 2% of total amount;
[0065] (II) Under the action of a gasification agent at 500°C, the gasification raw material undergoes primary pyrolysis gasification at 800°C, and then performs secondary pyrolysis gasification at 900°C to obtain high-temperature gas and ash;
[0066] At the same time, the obtained ash is exchanged with softened cold water, and after the ash is cooled to room temperature, the cold ash is obtained;
[0067] (III) Perform high-temperature dust removal on the high-temperature gas to remove fly ash to obtain a once-purified high-temperature gas with a temperature of 900° C.;
[0068] At the same time, the obtained fly ash is used as a gasification raw material, and is subjected to cyclic pyrolysis and gasification through step (II...
Embodiment 3
[0074] Prepare gas as follows:
[0075] (1) Get garbage charcoal, after crushing and sieving pretreatment successively, obtain the gasification raw material that the particle diameter greater than 6mm is less than 3% of total amount;
[0076] (II) Under the action of a gasification agent at 650°C, the gasification raw material undergoes primary pyrolysis gasification at 900°C, and then performs secondary pyrolysis gasification at 1100°C to obtain high-temperature gas and ash;
[0077] At the same time, the obtained ash is exchanged with softened cold water, and after the ash is cooled to room temperature, the cold ash is obtained;
[0078] (III) Carrying out high-temperature dust removal on the high-temperature gas to remove fly ash to obtain a once-purified high-temperature gas with a temperature of 1100° C.;
[0079] At the same time, the obtained fly ash is used as a gasification raw material, and is subjected to cyclic pyrolysis and gasification through step (II);
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