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A kind of production method of briquette

A production method and briquette technology, which is applied in the field of fly ash recycling, can solve the problem of low calorific value of briquette, and achieve the effects of avoiding pollution, saving manpower, and improving utilization

Active Publication Date: 2021-03-12
KEDA MAS CLEAN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of low calorific value of coal briquettes due to high clay content in existing briquettes, the present invention provides a method for producing briquettes. The particle size of the crushed coal used in the method is ≤3mm, which is beneficial to reduce the amount of binder used

Method used

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  • A kind of production method of briquette
  • A kind of production method of briquette
  • A kind of production method of briquette

Examples

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Effect test

Embodiment 1

[0028] A method for producing coal briquettes, comprising the steps of:

[0029] Step 1: Concentrate the crushed coal, binder and fly ash, wherein the particle size of the crushed coal is ≤3mm, and the crushed coal is sieved coal for gasification.

[0030] Step 2: Stir and mix the material obtained in Step 1, and add water to the mixed material during the stirring process;

[0031] Step 3: pressing and molding the material obtained in Step 2 to obtain a semi-finished product; Step 4: drying the semi-finished product to obtain a finished coal briquette.

[0032] In the prior art, the particle size of pulverized coal is generally controlled within 0.6 mm. Under this premise, the amount of binder needs to be greatly increased, which makes it difficult to increase the calorific value of the coal briquette, which is not conducive to the promotion of the use of briquette coal. In this embodiment, crushed coal with a particle size of ≤3mm is mixed with fly ash, which is beneficial t...

Embodiment 2

[0036] A method for producing coal briquettes, comprising the steps of:

[0037] Step 1: Concentrate the crushed coal, binder and fly ash, wherein the particle size of the crushed coal is ≤3mm, and the crushed coal is the crushed coal sieved by gasification coal; the fly ash refers to the fluidized bed gasifier produced fly ash. Specifically, the fly ash is stored in the buffer bin, and the fly ash is quantitatively input into the first-stage twin-shaft mixer through the star-shaped ash discharge valve of the buffer bin, and the first-stage twin-shaft mixer is easy to obtain in the market , For example, the model produced by Zhengzhou Great Wall Metallurgical Equipment Co., Ltd. is the mixer of WJH2300. The pulverized coal with particle size ≤ 3mm screened by the sieving machine is transported to the first belt conveyor through the first quantitative feeder. The binder is conveyed to the first belt conveyor through the second quantitative feeder, and the pulverized coal toge...

Embodiment 3

[0046] A method for producing coal briquettes, comprising the steps of:

[0047] Step 1: Concentrate crushed coal, binder and fly ash. Specifically, the fly ash is stored in the buffer bin, and the fly ash is quantitatively input into the first-stage twin-shaft mixer through the star-shaped ash discharge valve of the buffer bin, and the first-stage twin-shaft mixer is easy to obtain in the market , For example, the model produced by Zhengzhou Great Wall Metallurgical Equipment Co., Ltd. is the mixer of WJH2300. The pulverized coal with particle size ≤ 3mm screened by the sieving machine is transported to the first belt conveyor through the first quantitative feeder. The binder is conveyed to the first belt conveyor through the second quantitative feeder, and the pulverized coal together with the binder is input into the first twin-shaft mixer through the first belt conveyor.

[0048] In step one, the particle size of the crushed coal is less than or equal to 3mm, and the cru...

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Abstract

The invention discloses a production method of molded coal, which belongs to the technical field of fly ash recovery and utilization. The following steps are included: Step 1: Concentrate the crushed coal, binder and fly ash, wherein the particle size of the crushed coal is ≤3mm; Step 2: Stir and mix the materials obtained in Step 1, during the stirring process, add Adding water; Step 3: Pressing and molding the material obtained in Step 2 to obtain a semi-finished product; Step 4: Drying the semi-finished product to obtain a finished coal briquette.

Description

technical field [0001] The invention belongs to the technical field of fly ash recovery and utilization, and in particular relates to a production method of molded coal. Background technique [0002] As an important part of clean coal technology, coal gasification includes fixed bed gasification and fluidized bed gasification. Because fluidized bed gasification has the advantages of wide adaptability to coal types, consumption of high-ash coal / low-quality pulverized coal, uniform material mixing, and good heat and mass transfer performance, fluidized bed gasification has become an important direction for clean and efficient utilization of coal. . [0003] The coal gas produced by the fluidized bed gasifier will contain a large amount of fly ash, which has the characteristics of small particle size, low density, high carbon content, non-hydrophilicity, and no volatile matter. Due to the high carbon content, chemical composition, mineral composition and performance of the fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/04C10L5/10
CPCC10L5/04C10L5/10C10L2290/08C10L2290/24C10L2290/30
Inventor 丁方园王凯黄大中李得杰史宇立蒋芹
Owner KEDA MAS CLEAN ENERGY
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