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A method of increasing the ash melting temperature of biomass briquette fuel by using porous ceramics

A technology of porous ceramics and shaped fuels, applied in biofuels, waste fuels, fuels, etc., can solve the problems of reducing the heat conversion rate of combustion equipment, high dispersion of additives, increasing production costs, etc., to achieve reduced corrosion and wear, and stable performance , Ease of recycling

Active Publication Date: 2021-01-22
桂林桂特板业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of the biomass briquette fuels will have coking phenomenon, and the coking phenomenon of the special biomass fuel burner is more prominent, which not only reduces the heat conversion rate of the combustion equipment, but also causes corrosion and wear to the equipment
In order to alleviate the coking phenomenon, powdered additives are often added to biomass fuels. Due to the high dispersion of additives, it is difficult to recover materials such as precious metals in additives, which greatly increases production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for improving the ash fusion temperature of biomass molding fuel by using porous ceramics, comprising the following steps:

[0023] (1) Preparation of porous ceramics: porous ceramics are composed of the following components by weight: 30 parts of ceramic micropowder, 5 parts of fly ash, 2 parts of iron powder, 0.3 part of borax; ceramic micropowder, fly ash, iron powder, borax Mix evenly and pulverize to 300 mesh, granulate, and bake at 900°C for 30 minutes; cool to room temperature at a cooling rate of 8°C / s to obtain the porous ceramic;

[0024] (2) Use porous ceramics as the carrier to adsorb the catalyst and the potassium-fixing agent. The steps for adsorbing the catalyst and the potassium-fixing agent are as follows: 1) Add the catalyst and the potassium-fixing agent to the mixture of isopropanol and phosphoric acid with a volume ratio of 1:2, soak 8h; 2) Add porous ceramics to the mixture in step 1), heat the temperature of the mixture to 40°C and soak f...

Embodiment 2

[0028] A method for improving the ash fusion temperature of biomass molding fuel by using porous ceramics, comprising the following steps:

[0029] (1) Preparation of porous ceramics: porous ceramics are composed of the following components by weight: 35 parts of ceramic micropowder, 10 parts of fly ash, 4 parts of iron powder, 0.5 part of borax; ceramic micropowder, fly ash, iron powder, borax Mix evenly and pulverize to 350 mesh, granulate, and roast at 950°C for 35 minutes; cool to room temperature at a cooling rate of 12°C / s to obtain the porous ceramic;

[0030] (2) Use porous ceramics as the carrier to adsorb the catalyst and the potassium-fixing agent. The steps for adsorbing the catalyst and the potassium-fixing agent are as follows: 1) Add the catalyst and the potassium-fixing agent to the mixture of isopropanol and phosphoric acid with a volume ratio of 1:3, soak 12h; 2) Add porous ceramics to the mixture in step 1), heat the temperature of the mixture to 45°C and so...

Embodiment 3

[0034] A method for improving the ash fusion temperature of biomass molding fuel by using porous ceramics, comprising the following steps:

[0035] (1) Preparation of porous ceramics: porous ceramics are composed of the following components by weight: 32 parts of ceramic micropowder, 8 parts of fly ash, 3 parts of iron powder, 0.4 part of borax; ceramic micropowder, fly ash, iron powder, borax Mix evenly and pulverize to 320 mesh, granulate, and roast at 920°C for 33 minutes; cool to room temperature at a cooling rate of 10°C / s to obtain the porous ceramic;

[0036](2) Use porous ceramics as the carrier to adsorb the catalyst and the potassium-fixing agent. The steps for adsorbing the catalyst and the potassium-fixing agent are as follows: 1) Add the catalyst and the potassium-fixing agent to a mixture of isopropanol and phosphoric acid with a volume ratio of 1:2.5, soak 9h; 2) Add porous ceramics to the mixture in step 1), heat the temperature of the mixture to 42°C and soak ...

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Abstract

The invention discloses a method for improving an ash fusion temperature of biomass forming fuel by utilizing porous ceramics. The method comprises the following steps: adsorbing a catalyst and a potassium fixation agent by taking the porous ceramics as a carrier; enabling the potassium fixation agent to react with potassium in the biomass forming fuel by adding the porous ceramics carrying the catalyst and the potassium fixation agent into the biomass forming fuel, producing a high-melting-point compound to be remained in stove ash, so that the ash fusion temperature of the biomass forming fuel is improved. According to the catalyst on the porous ceramics, the reaction between ammonium hypophosphite and potassium chloride can be accelerated, the amount of potassium chloride separated outin a gaseous form is reduced, the ash fusion temperature of the biomass forming fuel can be improved, corrosion and wear of alkali metals to combustion equipment can be reduced, and the catalyst is conveniently recovered.

Description

technical field [0001] The invention relates to the field of clean energy utilization, in particular to a method for increasing the ash melting temperature of biomass molding fuel by using porous ceramics. Background technique [0002] Biomass briquette fuel is made of agricultural and forestry residues as the main raw material. After slicing-crushing-removing impurities-fine powder-screening-mixing-softening-conditioning-extrusion-drying-cooling-quality inspection-packaging and other processes, the final production Formed environmentally friendly fuel. Biomass briquette fuel is smokeless, odorless, clean and environmentally friendly when burned, and its sulfur content, ash content, and nitrogen content are far lower than those of coal and petroleum. It is an environmentally friendly and clean energy and enjoys the reputation of "green coal". [0003] Due to the high content of K, Na, Cl, Ca and other elements in biomass fuel, the characteristics of low melting point of bio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/00C10L9/10C10L10/04C10L5/44
CPCC10L5/442C10L5/445C10L9/10C10L10/04Y02E50/10Y02E50/30
Inventor 蒋仁红
Owner 桂林桂特板业有限公司
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