Combustion improver and fuel made of same as well as fuel production method and application

A combustion-supporting agent and fuel technology, which is applied in the field of low-quality coal composite catalytic combustion-supporting agents, can solve the problems of equipment corrosion, seriousness, and high cost of catalytic combustion-supporting agents, and achieve the effect of no secondary pollution and low cost

Inactive Publication Date: 2013-06-26
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of high cost of existing catalytic combustion aids, serious corrosion of equipment, and possible generation of toxic organic substances in the high-temperature combustion process that may affect the environment, the present invention provides a low-quality coal composite catalytic combustion aid and its production Method and usage

Method used

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  • Combustion improver and fuel made of same as well as fuel production method and application
  • Combustion improver and fuel made of same as well as fuel production method and application
  • Combustion improver and fuel made of same as well as fuel production method and application

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preparation example Construction

[0028] The present invention also provides a kind of fuel, and its this fuel is mainly formed by mixing dispersoid and coal blending, wherein the proportion of sodium humate is 0.5-2%, the proportion of potassium nitrate is 0.2-1%, and the proportion of citric acid is 0.5-2%, the proportion of sodium acetate is 0.2-1.5%, and the proportion of sodium dodecylbenzenesulfonate is 0.2-1.5%. The proportion of dispersant is 5-20% of each coal blending. The preparation method of this fuel comprises the following steps:

[0029] Step 1, weigh a certain amount of sodium humate, potassium nitrate, citric acid, sodium acetate, sodium dodecylbenzenesulfonate in proportion, wherein the proportion of sodium humate is 0.2-2%, and the proportion of potassium nitrate is 0.2% -1.5%, the proportion of citric acid is 0.5-2%, the proportion of sodium acetate is 0.2-1.5%, and the proportion of sodium dodecylbenzenesulfonate is 0.2-1.5%. The proportion of dispersant is 5-20% of each coal blending. ...

Embodiment 1

[0035] Embodiment 1, utilize 5% coal slime as dispersant, the component of catalytic combustion accelerant, potassium nitrate 0.2%, sodium humate 0.2%, citric acid 0.5%, sodium acetate 0.2%, dodecylbenzenesulfonic acid Add 0.2% sodium to the dispersoid, grind it to below 120 mesh, then add the dispersoid to the remaining 95% of the coal blending and mix evenly, then it can be used as the fuel for the circulating fluidized bed boiler. At this time, the ignition temperature of the fuel is 464.54°C, and the temperature at the point of maximum weight loss rate is 541.38°C.

example 2

[0036] Example 2, utilizing 10% coal slime as a dispersoid, the components of the catalytic combustion aid, potassium nitrate 0.2%, sodium humate 2%, citric acid 2%, sodium acetate 1.5%, sodium dodecylbenzenesulfonate Add 1.5% to the dispersate, grind it to below 120 mesh, then add the dispersate to the remaining 95% of the coal blending and mix evenly, then it can be used as the fuel for the circulating fluidized bed boiler. At this time, the ignition temperature of the fuel is 467.06°C, and the temperature at the point of maximum weight loss rate is 537.4°C.

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Abstract

The invention provides a combustion improver and a fuel made of the combustion improver as well as a fuel production method and application. The catalysis combustion improver is prepared by the following steps of: by taking humic acid sodium, potassium nitrate, lemon acid, sodium acetate, sodium dodecyl benzene sulfonic and the like as raw materials, dispersing the catalyst raw materials such as the potassium nitrate in dispersate, grinding to below 120 meshes, then adding the dispersate to blended coal for uniform mixing, and adding to the blended coal again, wherein the dispersate accounts for 5-10% of the blended coal. The catalysis combustion improver can be used for solving the technical problem that a conventional catalysis combustion improver is high in cost, is severely corrosive to equipment and possibly generates poisonous organic matters to influence environments. The combustion improver provided by the invention is a chloride-free organic and inorganic compound combustion improver, is low in cost and has no secondary pollution and damage to combustion equipment.

Description

technical field [0001] The invention relates to a low-quality coal composite catalytic combustion-supporting agent, in particular to a low-quality coal composite catalytic combustion-supporting agent and its production method and use method. Background technique [0002] Low-quality coal refers to high-ash coal with a calorific value greater than 1500kcal / kg. A large amount of low-quality coal is produced during coal mining and washing and processing in mining areas, mainly including gangue, medium coal and coal slime. Low-quality coal in mining areas is used on a large scale Coal can solve a series of environmental pollution problems caused by piled gangue and coal slime in mining areas, and it also meets the requirements of circular economy and sustainable development. [0003] Combustion power generation in circulating fluidized bed boilers is one of the effective ways to utilize low-quality coal on a large scale. However, the unstable quality of low-quality coal has brou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C10L5/00F23K1/00
Inventor 许德平王东飞王永刚赵兵杨雅高雪明张书袁振陈思陈宇飞刘宸
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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