JPWO2021156628A5

JPWO2021156628A5 -

Info

Publication number: JPWO2021156628A5
Application number: JP2022544060A
Authority: JP
Publication date: 2024-02-21

Claims

A method for producing solid biomass fuel, the method comprising:
(i) providing one or more sources of biomass having an average particle diameter (D50) of 30,000 μm to 60,000 μm;
(ii) pulverizing the one or more sources of biomass to provide a pulverized biomass powder having an average particle diameter (D50) of 1000 μm to 10,000 μm;
(iii) drying the micronized biomass powder to provide a dry micronized biomass powder;
(iv) shaping the dry micronized biomass powder to provide a shaped biomass product;
(v) heating the shaped biomass product to a temperature of 160°C to 420°C for 0.25 to 5 hours to provide a solid biomass fuel; and (vi) removing dust particles from the solid biomass fuel. including the step of
The source of the one or more biomass is bagasse, sunflower stalk, wheat stalk, corn stalk, sorghum stalk, soybean stalk, peanut stalk, cotton stalk, rapeseed stalk, coconut shell, palm shell, seaweed, peanut skin, or The above methods, including combinations thereof.

The source of one or more biomass is bagasse, sunflower stalk, wheat stalk, corn stalk, sorghum stalk, soybean stalk, peanut stalk, cotton stalk, rapeseed stalk, coconut shell, palm shell, seaweed, peanut skin, or these. 2. The method of claim 1, consisting essentially of or consisting of a combination of.

step (i) of providing one or more sources of biomass having an average particle diameter (D50) of 30,000 μm to 60,000 μm, 2. The method of claim 1, comprising chopping the one or more sources of biomass so that the source of biomass is chopped.

2. The method of claim 1, wherein step (iii) of drying the micronized biomass powder to provide a dry micronized biomass powder comprises drying the micronized biomass in a drying cylinder,
(i) the moisture content of the micronized biomass powder is 20% by weight or less, and the method comprises drying the micronized biomass in a single drying cylinder; or
(ii) the moisture content of the micronized biomass powder is 20% by weight or more, and the method includes drying the micronized biomass in a plurality of drying cylinders;
Said method .

step (v) of heating the shaped biomass product is carried out for 0.4 to 2.5 hours, and heating the shaped biomass product is heated to a temperature of 180°C to 350°C. 2. The method of claim 1, comprising heating to.

the step (v) of heating the shaped biomass product is adapted such that the uniformity of the solid biomass fuel is controlled; and the step (v) is adapted such that the uniformity of the solid biomass fuel is controlled. 2. The method of claim 1, wherein causing comprises performing step (v) in an apparatus that rotates the shaped biomass product while heating.

7. The method of claim 6, wherein adapting step (v) so that uniformity of the solid biomass fuel is controlled comprises controlling the speed or direction of rotation of the shaped biomass product.

The method of claim 1, wherein step (vi) of removing dust particles from the solid biomass fuel comprises removing dust particles from the solid biomass fuel using a screen having a pore size of 2 mm to 8 mm.

9. The method of claim 8, wherein step (vi) of removing dust particles from solid biomass fuel comprises subjecting the solid biomass fuel to vibration, rotation, rolling, or any combination thereof.

the bulk density of the solid biomass fuel as determined by DIN EN 15103 is between 0.55 kg/l and 0.8 kg/l and/or the mechanical durability of the solid biomass fuel as determined by DIN EN 15210-1 is , 90% or more.

(i) the one or more sources of biomass comprises or consists essentially of bagasse, and the solid biomass fuel has a bulk density of 0.60 kg/L to 0.65 kg/L; The mechanical durability of the solid biomass fuel is 95% or more,
(ii) the one or more sources of biomass comprises or consists essentially of sunflower stems, and the solid biomass fuel has a bulk density of 0.60 kg/L to 0.65 kg/L; and the mechanical durability of the solid biomass fuel is 95% or more,
(iii) the one or more sources of biomass comprises or consists essentially of wheat stalks, and the solid biomass fuel has a bulk density of 0.58 kg/L to 0.65 kg/L. and the mechanical durability of the solid biomass fuel is 95% or more,
(iv) the one or more sources of biomass comprise or consist essentially of cornstalk, and the solid biomass fuel has a bulk density of 0.61 kg/L to 0.66 kg/L; and the mechanical durability of the solid biomass fuel is 96% or more,
(v) the one or more sources of biomass comprise or consist essentially of sorghum stalks, and the solid biomass fuel has a bulk density of 0.62 kg/L to 0.66 kg/L. and the mechanical durability of the solid biomass fuel is 97% or more,
(vi) the one or more sources of biomass comprise or consist essentially of soybean stalks, and the solid biomass fuel has a bulk density of 0.61 kg/L to 0.66 kg/L; and the mechanical durability of the solid biomass fuel is 96% or more,
(vii) the one or more sources of biomass comprise or consist essentially of peanut stalks, and the solid biomass fuel has a bulk density of 0.62 kg/L to 0.68 kg/L; and the mechanical durability of the solid biomass fuel is 97% or more,
(viii) the one or more sources of biomass comprises or consists essentially of cotton stalks, and the solid biomass fuel has a bulk density of 0.62 kg/L to 0.68 kg/L. and the mechanical durability of the solid biomass fuel is 98% or more,
(ix) the one or more sources of biomass comprise or consist essentially of rapeseed stalks, and the solid biomass fuel has a bulk density of 0.58 kg/L to 0.65 kg/L; and the mechanical durability of the solid biomass fuel is 98% or more,
(x) the one or more sources of biomass comprises or consists essentially of coconut shells, and the solid biomass fuel has a bulk density of 0.62 kg/L to 0.72 kg/L; and the mechanical durability of the solid biomass fuel is 98% or more,
(xi) the one or more sources of biomass comprises or consists essentially of palm shells, and the solid biomass fuel has a bulk density of 0.62 kg/L to 0.70 kg/L; and the mechanical durability of the solid biomass fuel is 98% or more,
(xii) the one or more sources of biomass comprises or consists essentially of seaweed, and the solid biomass fuel has a bulk density of 0.61 kg/L to 0.66 kg/L; The mechanical durability of the solid biomass fuel is 96% or more, or
(xiii) the one or more sources of biomass comprises or consists essentially of peanut skin, and the solid biomass fuel has a bulk density of 0.61 kg/L to 0.66 kg/L. and the mechanical durability of the solid biomass fuel is 97% or more,
2. The method according to claim 1, wherein the bulk density is determined according to DIN EN 15103 and the mechanical durability is determined according to DIN EN 15210-1.

(i) the total dry sulfur content of the biomass solid fuel is not more than 0.5% by weight, said total dry sulfur content being determined according to DIN EN 15289; (ii) the total dry hydrogen content of the biomass solid fuel is at least 3% by weight and said total dry hydrogen content is determined according to DIN EN 15104; (iii) the total dry oxygen content of the biomass solid fuel is at least 20% by weight and said total dry oxygen content is determined according to DIN EN 15104; (iv) the total dry carbon content of the biomass solid fuel is at least 40% by weight and the total dry carbon content is determined according to DIN EN 15104; (v) the biomass solid fuel the total dry nitrogen content of the fuel is less than 5.0% by weight, said total dry nitrogen content being determined according to DIN EN 15104; (vi) the chemical oxygen demand (COD) of the solid biomass fuel is (vii) the fixed carbon content of the solid biomass fuel is 20% by weight or more and the fixed carbon the carbon content is determined according to DIN EN 51734; (viii) the ash content of the solid biomass fuel is less than 20% by weight, said ash content being determined according to EN 14775 at 550°C; (ix) the carbon content of the solid biomass fuel is determined according to DIN EN 51734; (x) the internal moisture content of the solid biomass fuel is less than 8% by weight; , said internal moisture content is determined according to DIN EN 14774; (xi) the biomass solid fuel has a calorific value of 4300 kcal/kg to 6500 kcal/kg, said calorific value is determined according to DIN EN 14918; xii) the biomass solid fuel has a base moisture content of less than 10% by weight, said base moisture content being determined by GB/T211-2017; (xiii) the pH of the solid biomass fuel is between 4 and 10; and 2. The method of claim 1, wherein:/or (xiv) the solid biomass fuel is water resistant for up to 20 days.

2. The method of claim 1, wherein the biomass-derived material 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.

Solid biomass fuel obtainable or obtained by the method according to any of claims 1 to 13.

A solid biomass fuel derived from one or more biomass sources, the one or more biomass sources comprising:
(i) comprises, consists of, or consists essentially of bagasse;
(ii) comprises, consists of, or consists essentially of sunflower stems;
(iii) comprises, consists of, or consists essentially of wheat stalk;
(iv) comprises, consists of, or consists essentially of corn stalk;
(v) comprises, consists of, or consists essentially of soybean stalks;
(vi) comprises, consists of, or consists essentially of sorghum stalk;
(vii) comprising, consisting of, or consisting essentially of peanut shell;
(viii) comprising, consisting of, or consisting essentially of cotton stalk;
(ix) comprising, consisting of, or consisting essentially of rapeseed stems;
(x) comprises, consists of, or consists essentially of coconut shell;
(xi) comprising, consisting of, or consisting essentially of palm shell;
(xii) comprises, consists of, or consists essentially of seaweed; or
(xiii) comprising, consisting of, or consisting essentially of peanut skin;
The bulk density of the solid biomass fuel as determined according to DIN EN 15103 is between 0.55 kg/l and 0.8 kg/l and the mechanical durability of the solid biomass fuel as determined according to DIN EN 15210-1 is 95% or more, the chemical oxygen demand (COD) of the solid biomass fuel is 5000 ppm or less when immersed in water, and the material derived from biomass is contained in the solid biomass fuel. The solid biomass fuel is present in an amount of at least 95% by weight of the total fuel content of the biomass fuel.

A combustion method comprising the step of combusting the solid biomass fuel according to claim 14 or 15 to produce energy.

17. The method of claim 16, wherein the solid biomass fuel is co-fired and combusted with a fossil fuel such as coal, and/or the PM 1.0 emissions of the method are less than 175 mg/kg.