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A preparation method and system for biomass shaped pellet fuel

A technology of pellet fuel and briquette fuel, which is applied in the field of preparation of biomass briquette pellet fuel, can solve the limitation of the physical and chemical properties of biomass molding raw materials due to seasonal changes in raw material physical and chemical properties, the development of biomass molding industry, the temperature and pressure of biomass molding, and the The problem of short life of wearing parts, etc., can alleviate the shortage of biomass raw materials, reduce the loss of molding equipment, and achieve the effect of waterproof and water absorption resistance.

Active Publication Date: 2017-03-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, most of the biomass briquettes are difficult to store, and the storage cost is high. The briquettes are prone to mold, rupture, volume expansion, and reduced strength. Serious cases can lead to warehouse explosions or spontaneous combustion accidents.
The temperature and pressure required for biomass molding are high, the equipment loss is serious, and the life of molding vulnerable parts is short, which is the main bottleneck of the large-scale biomass molding technology
Insufficient biomass molding raw materials, seasonal changes in raw materials and differences in physical and chemical properties of raw materials also limit the development of biomass molding industry

Method used

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  • A preparation method and system for biomass shaped pellet fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 An embodiment of the preparation system of biomass shaped granular fuel of the present invention is shown, and the preparation system includes a raw material processing system, a shaping system, a roasting system, a boiler system and a distribution system.

[0043] The raw material treatment system includes a biomass raw material treatment system and a sludge raw material treatment system. The biomass raw material treatment system includes a biomass drying device 1, a biomass crushing device 4 and a biomass bin 11 connected in sequence. 3 connection to transport biomass raw materials. The sludge raw material treatment system includes a sludge drying device 2, a sludge crushing device 7 and a sludge silo 9 connected in sequence, and the sludge raw materials are transported through the auger 3 between adjacent processes.

[0044] The forming system comprises a sludge additive silo 10, a mixing device 15, a first lifter 16, a pellet molding machine 17 and a first...

Embodiment 2

[0059] This embodiment adopts the same preparation system as in Example 1. In the preparation method of this embodiment, the biomass raw material is camphor wood chips, and the sludge raw material is papermaking sludge, which specifically includes the following steps:

[0060] 1) Drying: send the biomass raw material (camphorwood sawdust) and the sludge raw material (papermaking sludge) into the biomass drying device 1 and the sludge drying device 2 respectively, and use the temperature generated by the biomass boiler 28 at 120°C to 180°C The medium-temperature flue gas will dry the camphor wood chips to a moisture content of 13%; use the high-temperature steam of 160°C to 200°C generated by the biomass boiler 28 to dry the papermaking sludge to a moisture content of 13%, and the dried camphor wood chips will pass through The auger 3 is sent to the biomass pulverizing device 4, and the dried papermaking sludge is sent to the sludge pulverizing device 7 through the auger 3.

[...

Embodiment 3

[0067] This example uses the same preparation system as Example 1. In the preparation method of this example, the biomass raw material is corn stalks, and the sludge raw material is printing and dyeing sludge, which specifically includes the following steps:

[0068] 1) Drying: Send the biomass raw material (corn stalk) and sludge raw material (printing and dyeing sludge) into the biomass drying device 1 and the sludge drying device 2 respectively, and use the biomass boiler 28 to generate 120 ° C ~ 180 ° C The medium-temperature flue gas dries the corn stalks to a moisture content of 18%; uses the high-temperature steam of 160°C to 200°C generated by the biomass boiler 28 to dry the printing and dyeing sludge to a moisture content of 18%, and the dried corn stalks pass through the auger 3 Sent to the biomass crushing device 4, and the dried printing and dyeing sludge is sent to the sludge crushing device 7 through the auger 3.

[0069] 2) Pulverization: the dried corn stalks ...

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Abstract

The invention discloses a preparation method and a preparation system for biomass forming granular fuels. The preparation method comprises the following steps: drying biomass raw materials by medium-temperature flue gas, and drying sludge raw materials by high-temperature steam; and adding a sludge additive to mix and form after crushing, and roasting by high-temperature flue gas to obtain the biomass forming granular fuels. The system comprises a raw material processing system, a forming system, a roasting system and a boiler system, wherein the boiler system is used for providing the high-temperature steam and the medium-temperature flue gas to the raw material processing system through a high-temperature steam pipeline and a medium-temperature gas supply tube; and the boiler system is used for providing the high-temperature flue gas to the roasting system through the high-temperature gas supply tube. The preparation method disclosed by the invention is strong in water absorption resistance, low in storage and transportation cost, not prone to get moldy and high in strength. The system disclosed by the invention is low in operation cost, gentle in forming condition, small in forming equipment loss, high in heat energy utilization rate and good in performance of formed fuels.

Description

technical field [0001] The invention belongs to the field of biomass energy and solid waste reuse, and in particular relates to a preparation method and system for biomass shaped granular fuel. Background technique [0002] With the increasing demand for fossil fuels in the development of the national economy, the consumption of fossil fuel resources is accelerating at an alarming rate, and the use of coal will cause serious environmental pollution, so the task of finding alternative energy sources is becoming increasingly urgent. Biomass energy is a kind of renewable energy. my country is rich in agricultural and forestry wastes. In 2010, it produced 700 million tons of straw and 300 million tons of forestry residues. Biomass energy utilization mainly includes direct combustion, compact molding, liquefaction, and gasification. At present, biomass densification molding technology is an effective way to utilize biomass and has achieved industrial utilization. [0003] Bioma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/44C10L5/46B01J2/22C10B53/02C10B57/10F23K1/00F23J15/02
CPCY02E50/10Y02E50/30
Inventor 袁兴中蒋龙波陈晓红梁婕肖智华李辉王侯曹亮曾光明
Owner HUNAN UNIV
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