Production of synthesis gas from gasifying and reforming carbonaceous material
It is provided a method of converting a carbonaceous material into syngas at a carbon conversion rate of at least 78% comprising gasifying the carbonaceous material in a fluidized bed reactor producing a crude syngas, classifying the crude syngas by particle size and density into a cut sizing device, introducing the classified particle crude syngas into a thermal reformer and reforming the classified crude syngas at a temperature above mineral melting point, producing the syngas.
1. A method of converting a carbonaceous material into synthesis gas comprising:
a) gasifying the carbonaceous material in a fluidized bed, producing a crude syngas;
b) classifying the crude syngas by particle aerodynamic velocity into a cut sizing device producing classified crude syngas comprising classified particles with a range of particle diameter and density;
c) introducing said classified particle crude syngas into a thermal reformer; and
d) reforming said classified crude syngas at a temperature above mineral melting point, producing the synthesis gas.
2. The method of claim 1 , wherein the cut sizing device is a freeboard enlargement, a cyclone, a perforated shroud, a helical strakes, a longitudinal slats, a filter, a cascade impactor, an aerodynamic classifier or any combination thereof.
3. The method of claim 1 , wherein the carbonaceous material is fed to the fluidized bed reactor by a feeding system.
4. The method of claim 1 , wherein a fluidizing agent is used to heat up the fluidized bed reactor and feed oxygen to gasification of the carbonaceous material.
5. The method of claim 4 , wherein the fluidizing agent is air, oxygen, carbon dioxide, nitrogen, steam or any combination thereof.
6. The method of claim 1 , wherein the carbonaceous material is gasified at a temperature of about 450° C. to about 800° C.; or about 500° C. to about 700° C.
7. The method of claim 1 , wherein the classified particle crude syngas is reformed in a thermal reformer.
8. The method of claim 1 , wherein the reforming operating temperature is of about 1200° C. to about 2000° C.
9. The method of claim 8 , wherein air, oxygen, carbon dioxide, nitrogen, steam or any combination in any proportion thereof is fed to the reformer to increase the temperature of said reformer.
10. The method of claim 1 , wherein the classified crude syngas is reformed at a temperature of about 1200° C. to about 1800° C.
11. The method of claim 1 , wherein the reformer comprises a cooling wall membrane.
12. The method of claim 11 , wherein the cooling wall membrane is made of studded pipes.
13. The method of claim 1 , wherein the carbonaceous material is converted into syngas with at least 78% of carbon conversion rate; at least 90% of carbon conversion rate; or at least 96% of carbon conversion rate.
14. The method of claim 1 , wherein the carbonaceous material is a liquid, a solid and/or a gas containing carbon.
15. The method of claim 1 , wherein the carbonaceous material is a biomass.
16. The method of claim 15 , wherein the biomass is an homogeneous biomass, a non-homogenous biomass, a non-homogeneous biomass, a heterogeneous biomass, urban biomass, or a combination thereof.
17. The method of claim 16 , wherein the homogenous biomass is from a coniferous tree, a deciduous tree, an agricultural material, a primary sludge, waste cooking oil, lychee fruit bark or stillage; or wherein the non-homogenous biomass is from mixed forest residues, or mixed tree residues.
18. The method of claim 1 , wherein the carbonaceous material comprises a plastic, a metal, an inorganic salt, an organic compound, industrial wastes, recycling facilities rejects, automobile fluff, municipal solid waste, ICI waste, C&D waste, refuse derived fuel (RDF), solid recovered fuel, sewage sludge, used wood utility poles, wood railroad ties, wood, tire, synthetic textile, carpet, synthetic rubber, materials of fossil fuel origin, expanded polystyrene, poly-film floc, construction wood material, or any combination thereof.