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Circulating Fluidized Combustion Technology of Agricultural Straw Coal-water Slurry

A technology of circulating fluidization and straw coal, which is applied in the direction of combustion method, combustion equipment, fuel, etc., can solve the problems of straw economy, low degree of commercialization and industrialization, and environmental pollution, so as to optimize combustion effect, protect the environment, and utilize rate-enhancing effect

Inactive Publication Date: 2016-03-09
青岛特利尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is a large agricultural country with extremely rich crop straw resources. According to statistics, the annual output of straw is about 600 million tons, which contains rich energy and a large amount of nutrients. However, the comprehensive utilization of straw is low in economics, commercialization and industrialization. There are still a lot of in-situ incineration that has caused serious pollution to the environment. How to use this huge renewable resource scientifically and efficiently has become an urgent problem to be solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A circulating fluidized combustion process of agricultural straw coal-water slurry, comprising the following steps: step 1, preparing straw coal, using a pulverizer to crush the straw to particles with a particle size of 5 mm, and compressing the straw particles to a density of 1.1 g / cm 3 Add coal powder and coalification agent to the compressed module for coalification treatment to produce straw coal; step 2, make straw coal-water slurry according to the production method of coal-water slurry. The above-mentioned coal-water slurry is installed on the granulation spreader on the coal-water slurry suspension fluidized combustion boiler through the slurry supply equipment; the granulation spreader spreads the coal-water slurry evenly into the combustion chamber; the primary air from the high-pressure fan After the igniter is heated into hot flue gas, the bed material is heated to 400°C, and the particle cluster formed by the bed material medium and straw coal-water slurry ...

Embodiment 2

[0013] A circulating fluidized combustion process of agricultural straw coal-water slurry, comprising the following steps: step 1, preparing straw coal, using a pulverizer to crush the straw to particles with a particle size of 10mm, and compressing the straw particles to a density of 1.2g / cm 3 Add coal powder and coalification agent to the compressed module for coalification treatment to produce straw coal; step 2, make straw coal-water slurry according to the production method of coal-water slurry. The above-mentioned coal-water slurry is installed on the granulation spreader on the coal-water slurry suspension fluidized combustion boiler through the slurry supply equipment; the granulation spreader spreads the coal-water slurry evenly into the combustion chamber; the primary air from the high-pressure fan After the igniter is heated into hot flue gas, the bed material is heated to 500°C, and the bed material media and the particle cluster formed by spraying the straw coal-wa...

Embodiment 3

[0015] A circulating fluidized combustion process of agricultural straw coal-water slurry, comprising the following steps: step 1, preparing straw coal, using a pulverizer to crush the straw into particles with a particle size of 5 mm, and compressing the straw particles to a density of 1.3 g / cm 3 Add coal powder and coalification agent to the compressed module for coalification treatment to produce straw coal; step 2, make straw coal-water slurry according to the production method of coal-water slurry. The above-mentioned coal-water slurry is installed on the granulation spreader on the coal-water slurry suspension fluidized combustion boiler through the slurry supply equipment; the granulation spreader spreads the coal-water slurry evenly into the combustion chamber; the primary air from the high-pressure fan After the igniter is heated into hot flue gas, the bed material is heated to 600°C, and the bed material medium and the particle cluster formed by the straw coal-water s...

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PUM

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Abstract

The invention discloses a circular fluidizing combustion technology for water coal slurry of an agricultural straw coal, which comprises the following steps: 1, preparing a straw coal: using a grinder for grinding the straw into grains with grain size of 5-10mm, compressing the straw grains into a module with a density of 1.1-1.2g / cm<3>, adding coal powder and coalification agent into the compressed module for performing coalification treatment, thereby obtaining the straw coal, and 2, processing the straw coal into the water coal slurry, conveying and sowing the water coal slurry into a combustion chamber of a suspension vulcanizing combustion boiler by a slurry supplying device, combusting the water coal slurry and controlling the temperature in the combustion chamber at 920-990 DEG C. In the scheme, the agricultural straw is subjected to the coalification treatment and is made into the water coal slurry for combusting, so that the agricultural straw is comprehensively utilized, the environment is protected and the energy resource is saved.

Description

technical field [0001] The invention belongs to the field of industrial combustion characterized by fluid fuel, and specifically relates to a circulating fluidized combustion process of agricultural straw coal-water slurry. Background technique [0002] Agricultural straw is the stalk of crops. In the process of agricultural production, after wheat, corn, rice and other crops are harvested, inedible roots, stems, leaves and other wastes remain. Agricultural straw is rich in carbon-containing organic matter and nitrogen and phosphorus. Potassium and other inorganic fertilizers, and their sulfur content is very low. my country is a large agricultural country with extremely rich crop straw resources. According to statistics, the annual output of straw is about 600 million tons, which contains rich energy and a large amount of nutrients. However, the comprehensive utilization of straw is low in economics, commercialization and industrialization. There are also many in-situ incin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23K1/02C10L1/32
Inventor 韩建恒孙云国丽艳李瑞波
Owner 青岛特利尔科技有限公司