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Potassium fixing method for biomass fuels

A technology of biomass fuel and silica sol, which is applied in the direction of biofuel, waste fuel, fuel, etc., can solve problems such as adverse effects, achieve the effect of preventing adverse effects and improving slagging problems

Inactive Publication Date: 2017-02-22
SHANGHAI PUDONG ROAD & BRIDGE CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a method for fixing potassium in biomass fuel, which can significantly improve the problem that the potassium-containing components in biomass fuel have adverse effects on boilers and other equipment in high-temperature environments

Method used

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  • Potassium fixing method for biomass fuels

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Effect test

Embodiment 1

[0027] A kind of biofuel potassium fixing method is implemented as follows: evenly spray 10% silica sol solution 8.65kg (the amount of silica sol solution) on 10kg biomass fuel (75% corn stalk+25% cotton stalk, potassium element content 2.81%) The amount is determined according to the use of 2 moles of silicon dioxide per mole of active potassium-containing components), after spraying, place it for 2 hours, and carry out hot air (temperature 105 ° C) drying treatment to obtain dried biomass fuel. The fuel was applied in a muffle furnace and burned at a temperature of about 900°C. The obtained ash samples were tested for potassium content and ash melting point. See Table 1 for the corresponding data and results.

Embodiment 2

[0029] A method for fixing potassium in biomass fuel is implemented as follows: evenly spray 40% silica sol solution 3.87kg (consumption of silica sol solution) on 10kg biomass fuel (75% corn stalk+25% sawdust, potassium element content 3.35%) According to the use of 3 moles of silicon dioxide per mole of active potassium-containing components), after spraying, place it for 2 hours, and carry out hot air (temperature 105 ° C) drying treatment to obtain dried biomass fuel, the biomass fuel It is applied in a muffle furnace and burned at a temperature of about 900 ° C. The obtained ash sample is tested for potassium content and ash melting point. The corresponding data results are shown in Table 1.

Embodiment 3

[0031] A kind of biofuel potassium fixing method is implemented as follows: to 10kg biomass fuel (75% corn stalk+25% cotton stalk, potassium element content 2.81%) evenly spray 80% silica sol solution 2.16kg (silica sol solution The amount is determined according to the use of 4 moles of silicon dioxide per mole of active potassium-containing components), after spraying, place it for 2 hours, and carry out hot air (temperature 105 ° C) drying treatment to obtain dried biomass fuel. The fuel was applied in a muffle furnace and burned at a temperature of about 900°C. The obtained ash samples were tested for potassium content and ash melting point. See Table 1 for the corresponding data and results.

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Abstract

The invention relates to a potassium fixing method for biomass fuels. The potassium fixing method includes the steps of pretreatment, drying and high-temperature utilization, wherein during pretreatment, a silica sol solution is evenly sprayed on biomass fuel containing potassium elements or the biomass fuel is soaked into the silica sol solution. The potassium fixing method for the biomass fuels has the advantages of simplicity, low silica sol price, low cost and capabilities of effectively fixing potassium, benefiting improvement on reaction efficiency and weakening adverse effect of the potassium component in the biomass fuels on equipment such as a boiler during combustion.

Description

technical field [0001] The invention relates to a method for solidifying potassium in biomass fuel and the biomass fuel obtained by the method. Background technique [0002] Biomass is the fourth energy source after coal, oil, and natural gas, and its contribution accounts for 14% of the world's primary energy consumption. Biomass energy has the characteristics of nearly zero carbon dioxide emissions, so fully developing and utilizing biomass resources has a great impact on alleviating The tight energy supply and the reduction of greenhouse gas emissions are of great significance. Biomass accounts for about 20% of my country's total energy consumption, and the total amount of biomass resources is equivalent to 200-400 million tons of standard coal fuel each year, which has great potential for development and is sufficient to supplement my country's energy gap. [0003] Direct combustion of biomass is the most common biomass energy conversion technology, but most biomass boi...

Claims

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Application Information

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IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30C10L5/445C10L5/442
Inventor 施曙东闫国杰罗芳艳张健李军代刘钢涂圣康许严邱轶邓国民姚凯陈韬钱婷滕叶高琪娜陈雪丹
Owner SHANGHAI PUDONG ROAD & BRIDGE CONSTR
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