Process for producing solid biomass fuel
OwnerHong Mei Baiinventor
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Abstract
The present invention relates to a process for producing a solid biomass fuel, as well as a solid biomass fuel produced by said process. Additionally, the present invention relates to a combustion process comprising combusting said solid biomass fuel so as to produce energy.
Claims17
A process for producing a solid biomass fuel, wherein the process comprises the following sequential steps:
- (i) providing one or more sources of biomass;
- (ii) pulverizing the one or more sources of biomass to provide a pulverized biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;
- optionally, (iii) compressing the pulverized biomass powder to provide a compressed biomass powder;
- (iv) washing the compressed biomass powder or the pulverized biomass powder with an aqueous wash liquid to provide a washed biomass powder;
- (v) mechanically dewatering the washed biomass powder to provide a dewatered biomass powder and an aqueous effluent;
- (vi) drying the dewatered biomass powder to provide a dried biomass powder;
- (vii) molding the dried biomass powder so as to provide a molded biomass product;
- (viii) heating the molded biomass product to a temperature of from 160° C. to 420° C. for a time period of from 0.25 to 5 hours so as to provide a solid biomass fuel;
- and
- (ix) washing the solid biomass fuel with an aqueous wash liquid.
A process for producing a solid biomass fuel, wherein the process comprises the following sequential steps:
- (i) providing one or more sources of biomass;
- (ii) pulverizing the one or more sources of biomass to provide a pulverized biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;
- optionally, (iii) compressing the pulverized biomass powder to provide a compressed biomass powder;
- (iv) washing the compressed biomass powder or pulverized biomass powder with an aqueous wash liquid to provide a washed biomass powder;
- (v) mechanically dewatering the washed biomass powder to provide a dewatered biomass powder and an aqueous effluent;
- (vi) drying the dewatered biomass powder to provide a dried biomass powder;
- (vii) molding the dried biomass powder so as to provide a molded biomass product;
- and
- (viii) heating the molded biomass product to a temperature of from 160° C. to 420° C. for a time period of from 0.25 to 5 hours so as to provide a solid biomass fuel;
- wherein the one or more sources of biomass comprise, consist essentially of, or consist of:
- sesame straw, palm empty fruit bunches (EFB), palm fiber, oil palm tree, banana tree, Calliandra calothyrsus, Albizia chinensis, rice husk, yam, corn cob, Pennisetum sinese Roxb, or any combination thereof.
A solid biomass fuel derived from one or more sources of biomass, wherein the bulk density of the solid biomass fuel as determined according to DIN EN 15103 is from 1.0 to 1.4 g/cm3;
- the calorific value of the solid biomass fuel as determined according to DIN EN 14918 is 4500 MJ/Kg or more;
- wherein material derived from biomass is present in the solid biomass fuel in an amount of at least 95% by weight of the total fuel content of the solid biomass fuel;
- and wherein the one or more sources of biomass:
- (i) consist of, or consist essentially of sesame straw;
- (ii) consist of, or consist essentially of palm empty fruit bunches;
- (iii) consist of, or consist essentially of palm fiber;
- (iv) consist of, or consist essentially of banana tree;
- or
- (v) consist of, or consist essentially of oil palm tree trunk.
Dependencies are inferred from the claim text.