Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder

A technology for preparing high-calcium fly ash and binder, which is applied in the directions of biofuel and waste fuel, can solve the problems of low economy and high cost, and achieve the effects of prolonging service life, reducing power and reducing energy consumption.

Inactive Publication Date: 2012-07-11
SHENYANG INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because it is fly ash after flotation, the cost of flotation is relatively high. Although it has good performance as a binder and can be used as fuel to recover heat at the same time, its economy is not high.
[0006] In China, fly ash is used as a binder mainly for pulverized coal molding, and there are few reports in China as a biomass binder for molding

Method used

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  • Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder
  • Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder
  • Method for preparing biomass briquette by utilizing high-calcium fly ash composite binder

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Embodiment 1

[0035] The method for preparing biomass briquette fuel by using high-calcium fly ash composite binder uses the following materials as raw materials: pulverized biomass, oily sludge, high-calcium fly ash, sodium humate, and sawdust; wherein, high-calcium fly ash Calcium fly ash, oily sludge, sodium humate and sawdust form a composite binder. The addition of composite binder accounts for about 20% of the total weight, oily sludge accounts for 10% to 20% of the binder, sodium humate accounts for 2 to 5% of the binder, high calcium pulverized coal The ash accounts for 10% of the weight of the binder, and the balance is sawdust; the pulverized biomass particles and the causticized high-calcium fly ash composite binder are evenly mixed and sent into the The molding machine produces biomass shaped pellets, which are then cooled.

[0036] Before formal preparation, the preparatory work to be done is:

[0037] Put the flue gas into the water for preparing sodium humate, heat the wate...

Embodiment 2

[0046]The method for preparing biomass briquette fuel by using high-calcium fly ash composite binder uses the following materials as raw materials: pulverized biomass, high-calcium fly ash, and sawdust; wherein, high-calcium fly ash and sawdust form a composite binder. The added amount of composite binder accounts for about 20% of the total weight, high-calcium fly ash accounts for 20% of the binder weight ratio, and the balance is sawdust; after crushing, it is heated to 80°C to 95°C to the biomass particles It is uniformly mixed with the causticized high-calcium fly ash composite binder, sent to a molding machine to make biomass pellets, and then cooled.

[0047] Before formal preparation, the preparatory work to be done is: mix caustic soda and sawdust, add a certain amount of water, the amount of caustic soda should not exceed 4% of the total mixture.

[0048] Mix high-calcium fly ash and sawdust mixture, heat the mixture to 100°C with flue gas, and maintain the heating ...

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Abstract

The invention relates to a method for preparing biomass briquette by utilizing a high-calcium fly ash composite binder. The method comprises the following steps of: with crushed biomass, high-calcium fly ash and saw dust as raw materials, uniformly mixing crushed biomass grains and a composite binder at 85-95 DEG C, feeding a mixture to a forming machine to form biomass briquette grains, and cooling down the biomass briquette grains, wherein the high-calcium fly ash and the saw dust form the composite binder; in the all raw materials, the addition amount of the composite binder to total weight of the all raw materials is 13-20%, the weight ratio of the high-calcium fly ash to the binder is 8-20% and the balance of the raw materials is the saw dust. The method disclosed by the invention has the advantages of good environment protection performance, high economic value, low costs of devices and persons and excellent technical effect.

Description

technical field [0001] The invention relates to the technical field of development and utilization of renewable energy, and in particular provides a method for preparing biomass briquette fuel by using a high-calcium fly ash composite binder. Background technique [0002] British Patent No. 1286532 uses peat and biomass mixed, heated and formed at a temperature lower than 225°C, and a binder is added. The mixed molding of peat and biomass is formed by utilizing the caking property of peat, but the molding fuel has poor waterproof performance and poor durability. The required temperature is high, the pressure required for molding is high, and other types of inorganic binders are added to increase the ash content of the fuel. [0003] British Patent No. 143859 uses fly ash for cold forming, but does not mention whether fly ash plays a bonding role. The cold forming strength of fly ash is low, although it plays a certain skeleton role, the proportion of fly ash required is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCY02E50/30Y02E50/10
Inventor 文博范高潮黄新章张凯郭维城
Owner SHENYANG INST OF ENG
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