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 from agricultural waste such as grass, rice husk, yam, straw, corn cob or any combination thereof, 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 and a pre-treatment process for pre-treating one or more sources of biomass for use in the production of a solid biomass fuel.
Claims22
A process for producing a solid biomass fuel, wherein the process comprises the following steps:
- (i) providing one or more sources of biomass with an average particle diameter (D50) of from 30,000 μm to 60,000 μm and a moisture content of less than 50% by weight;
- (ii) pulverising the one or more sources of biomass to provide a pulverised biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;
- (iii) compressing the pulverised biomass powder so as to provide a compressed biomass powder with a moisture content of less than 30% by weight;
- (iv) drying the compressed biomass powder so as to provide a dried compressed biomass powder;
- (v) molding the dried compressed biomass powder so as to provide a molded biomass product;
- (vi) 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
- (vii) removing dust particles from the solid biomass fuel,
- wherein the steps (i)-(vii) are carried out in sequence.
A process for producing a solid biomass fuel, wherein the process comprises the following steps:
- (i) providing one or more sources of biomass with an average particle diameter (D50) of from 30,000 μm to 60,000 μm and a moisture content of less than 50% by weight;
- (ii) pulverising the one or more sources of biomass to provide a pulverised biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;
- (iii) compressing the pulverised biomass powder so as to provide a compressed biomass powder with a moisture content of less than 30% by weight;
- (iv) drying the compressed biomass powder so as to provide a dried compressed biomass powder;
- (v) molding the dried compressed biomass powder by using a compression ratio of from 3.8 to 6.5 during the molding step, so as to provide a molded biomass product;
- (vi) 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 (vii) removing dust particles from the solid biomass fuel, wherein the steps (i)-(vii) are carried out in sequence.
A process for producing a solid biomass fuel, wherein the process comprises the following steps:
- (i) providing one or more sources of biomass with an average particle diameter (D50) of from 30,000 μm to 60,000 μm and a moisture content of from 30% to 50% by weight, wherein step (i) of providing one or more sources of biomass with an average particle diameter (D50) of from 30,000 μm to 60,000 μm and a moisture content of from 30% to 50% by weight, comprises (a) compressing one or more sources of biomass so as to have a moisture content of from 30% to 50% by weight;
- prior to (b) chopping the one or more sources of biomass so as to have an average particle diameter (D50) of from 30,000 μm to 60,000 μm;
- (ii) pulverising the one or more sources of biomass to provide a pulverised biomass powder with an average particle diameter (D50) of from 1000 μm to 20,000 μm;
- (iii) compressing the pulverised biomass powder so as to provide a compressed biomass powder with a moisture content of less than 30% by weight;
- (iv) drying the compressed biomass powder so as to provide a dried compressed biomass powder;
- (v) molding the dried compressed biomass powder so as to provide a molded biomass product;
- (vi) 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
- (vii) removing dust particles from the solid biomass fuel,
- wherein the steps (i)-(vii) are carried out in sequence.
Dependencies are inferred from the claim text.