Biomass fuel preparation method

A biomass fuel and raw material technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of high processing cost, different release degree of fuel components, and increase the difficulty of pressing, so as to reduce the processing cost and processing cost, process The design is scientific and reasonable, and the effect of improving the heat utilization rate

Inactive Publication Date: 2019-02-22
彭翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, it has been found through research that the biomass fuel preparation process in the prior art still has the following problems: 1. The high-temperature and high-pressure pressing process currently used is to mix raw materials in a solid state and then extrude them under high-temperature and high-pressure environments. The processing cost is high. Although the finished product has a high calorific value of combustion, the fluidity of the raw material is poor, the heat released during the combustion process is slow, and the heat utilization rate of the raw mat...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of biomass fuel preparation method of the present embodiment, comprises the following steps:

[0037] S1. Raw material pretreatment: in parts by weight, select 162 parts of corn stalks, 48 ​​parts of sawdust, 67 parts of pine needles, and 19 parts of straw incineration fly ash; chop corn stalks and pass through a 20-30 mesh sieve to remove impurities; use 20 wt% of pine needles Take out and drain after being infiltrated with the alkaline solution; the above four raw materials are sent together into a high-efficiency countercurrent vibrating dryer, and the inlet air temperature is controlled at 110-120 °C, and dried to obtain pretreated mixed raw materials;

[0038] S2. Steam explosion: the pretreated mixed raw material is treated with 330°C water vapor for 40 seconds, and then exploded together with the rapid release of water vapor to obtain the explosive raw material;

[0039] S3. Sterilization culture: according to parts by weight, take 165 parts of blasting ra...

Embodiment 2

[0048] A kind of biomass fuel preparation method of the present embodiment, comprises the following steps:

[0049] S1. Raw material pretreatment: in parts by weight, select 153 parts of corn stalks, 43 parts of sawdust, 63 parts of pine needles, and 22 parts of straw incineration fly ash; chop corn stalks and pass through a 20-30 mesh sieve to remove impurities; use 20 wt% of pine needles Take out and drain after being infiltrated with the alkaline solution; the above four raw materials are sent together into a high-efficiency countercurrent vibrating dryer, and the inlet air temperature is controlled at 110-120 °C, and dried to obtain pretreated mixed raw materials;

[0050] S2. Steam explosion: the pretreated mixed raw material is treated with 340°C water vapor for 30s, and then exploded together with the rapid release of water vapor to obtain the explosive raw material;

[0051] S3. Sterilization culture: according to parts by weight, take 167 parts of blasting raw materia...

Embodiment 3

[0057] A kind of biomass fuel preparation method of the present embodiment, comprises the following steps:

[0058] S1. Raw material pretreatment: in parts by weight, select 156 parts of corn stalks, 50 parts of sawdust, 72 parts of pine needles, and 23 parts of straw incineration fly ash; chop corn stalks and pass through a 20-30 mesh sieve to remove impurities; use 20 wt% of pine needles Take out and drain after being infiltrated with the alkaline solution; the above four raw materials are sent together into a high-efficiency countercurrent vibrating dryer, and the inlet air temperature is controlled at 110-120 °C, and dried to obtain pretreated mixed raw materials;

[0059] S2. Steam explosion: the pretreated mixed raw material is treated with 325°C water vapor for 50 seconds, and then exploded together with the rapid release of water vapor to obtain the explosive raw material;

[0060] S3. Sterilization culture: according to parts by weight, take 168 parts of blasting raw ...

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Abstract

The invention discloses a biomass fuel preparation method and relates to the technical field of fuel processing. The biomass fuel preparation method comprises the working procedures of raw material pretreatment, steam explosion, sterilization cultureculturing, saccharification sterilization treatment, co-fermentation and mixed adsorption extrusion. Four raw materials are efficiently dried througha counterflow vibration technology, through steam explosion, hemicellulose in straw is decomposed into oligomer dissolved in water, lignin is subjected to bond rupture due to allyl ether to generate low-molecular matter, thus subsequent fermentation treatment is facilitated, and co-fermented biological fuel obtained after sterilization treatment and co-fermentation further contains high-purity liquid ethyl alcohol in addition to flammable cellulose and the lignin; and the co-fermented biological fuel is adsorbed into loose and porous modified coconut shell activated carbon and sepiolite fabricwithout the high-temperature and high-pressure harsh conditions, the raw material treatment cost and processing cost are greatly lowered, the combustion calorific value is stable, and the raw material heat utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of fuel processing, in particular to a method for preparing biomass fuel. Background technique [0002] Biomass fuel is made of biomass waste such as straw, rice husk, sawdust, and sawdust, and then mechanically pressurized to compress the original loose and amorphous raw materials into a solid shape with a certain shape and high density. Fuel, it has the advantages of small size, high density, convenient storage and transportation, stable combustion, long cycle, high combustion efficiency, and low content of ash and smoke pollutants. [0003] In general, industrial boilers mainly use woody biomass particles with a diameter of 8-10mm and a length of 25-35mm as fuel. The main technical indicators are: diameter 6-12mm, length 2-4 times the diameter, Bulk density greater than 600kg / m 3 , the broken rate is less than 1.5%-2.0%, the dry basis moisture content is less than 10%-15%, the ash content is less than 1...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCC10L5/44C10L5/442C10L5/445C10L5/447C10L2290/08C10L2290/24C10L2290/26C10L2290/30C10L2290/32Y02E50/10Y02E50/30
Inventor 不公告发明人
Owner 彭翔
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