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Method of manufacturing powdered coal for low absorbent fuel using coffee waste

A technology for coffee grounds and fuel, which is applied in the field of preparing pulverized coal for low-absorptive fuel using coffee grounds, can solve the problems of high energy input cost, reduced total energy, difficult to store, etc. The effect of reducing the cost of crushing and improving the storability

Inactive Publication Date: 2014-05-07
ALLIED BIO CORPROATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Biomass charcoal and bio-oil, which are conventional technologies that thermally decompose biomass for fuelization, have high energy input costs at a thermal decomposition temperature of 400°C or higher, and output about 40% of the weight, so that as a weight The energy output (energy yield) of the value of the weighted calorific value of the output weighted calorific value is too low, so there is a problem that the total energy output is reduced relative to the total energy input, and the fuel that is prepared from biomass into pellets The production method is difficult to store due to the hygroscopicity caused by hemicellulose (hemicellulose), which is a unique component of biomass, and it is difficult to pulverize due to the cellulose component, and there is a problem that the calorific value is too low compared with fossil fuels. The technique of producing granular fuel from coffee grounds involves costs and process burdens caused by removing protein by dipping in an acid solution and washing with water, and adding quicklime for granulation, thereby increasing the calcium with a high deposition rate inside the boiler ( Ca) content in particles, so there is a problem of increasing the slag production rate inside the boiler. The technology of thermally decomposing biomass at about 300°C to prepare solid fuels is concentrated in the field of utilizing wood resources, and there is no proposal for coffee grounds. Preparation method of pulverized coal for fuel by thermal decomposition

Method used

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  • Method of manufacturing powdered coal for low absorbent fuel using coffee waste
  • Method of manufacturing powdered coal for low absorbent fuel using coffee waste
  • Method of manufacturing powdered coal for low absorbent fuel using coffee waste

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Embodiment Construction

[0020] Hereinafter, the method for preparing pulverized coal for fuel using coffee grounds of the present invention will be described in detail with reference to examples.

[0021] attached figure 1 It is a preparation process diagram for explaining the preparation method of the pulverized coal for fuel using coffee grounds of this invention.

[0022] As shown in the figure, the method for preparing pulverized coal for fuel using coffee grounds of the present invention includes: firstly crushing the collected coffee grounds; drying the pulverized coffee grounds; The step of thermally decomposing the dried coffee grounds in the stirred roaster; the cooling step of cooling the thermally decomposed coffee grounds; the packaging step of packaging the prepared fuel with pulverized coal.

[0023] Hereinafter, the method for producing pulverized coal for fuel using the above-mentioned coffee grounds of the present invention will be described in more detail as follows.

[0024] Firs...

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Abstract

The invention relates to a method for manufacturing powdered coal for low absorbent fuel using coffee waste. A dry-type pulverizer is used to re-decompose the coffee waste collected in a compressed form with an aqueous ratio of 50 to 60% into powder, and an air flow-type dryer is used in a pulverization step to dry the powdered coffee waste until the aqueous ratio of the coffee waste is 10% or below. Then, the dried coffee waste powder is inputted into a stirring type roaster, a heating plate of which is heated to a temperature between 225 and 320 DEG C, and then the powder is stirred for 10 to 40 minutes while being thermally decomposed so as to decompose hemicellulose as a moisture absorption ingredient contained in the coffee waste, thereby inhibiting the moisture absorption property. At the same time, a vacuum conveyor is used to convey the thermally-decomposed coffee waste in the stirring type roaster to a cooling port by an enclosed conveying line and a power packaging machine sold on the market is used to seal the coffee waste in units of specified amount, thereby blocking moisture and making the transport easy.

Description

technical field [0001] The present invention relates to pulverized coal for fuel using coffee grounds (residue left after extracting coffee from coffee beans) and a preparation method thereof. After thermal decomposition at a temperature of 320°C for a predetermined period of time, the coffee grounds are transferred by a vacuum transfer machine, thereby preventing the coffee grounds from igniting and cooling to increase the carbon ratio of the coffee grounds and reduce the hemicellulose, which is a moisture-absorbing component. Ratio, thereby increasing calorific value and reducing hygroscopicity, pulverized coal for fuel using coffee grounds and a preparation method thereof. Background technique [0002] Generally, an organic matter is thermally decomposed (thermal decomposition) to become a thermal decomposition product such as solid carbon such as charcoal, oil, or combustible gas. For example, pyrolysis of wood can produce wood vinegar, wood tar, charcoal, etc., and coa...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/30Y02E50/14Y02E50/10C10B53/02C10L5/44C10L2290/02B09B3/40
Inventor 吴导建
Owner ALLIED BIO CORPROATION
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