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Modification quality upgrading system of brown coal

A modification and upgrading technology, applied in the direction of direct heating dry distillation, special form dry distillation, coke oven, etc., can solve the problem that the polluting gas and dust cannot be effectively treated, the efficiency of sulfur and mercury is low, and the heat of boiler exhaust gas cannot be obtained. Effective utilization and other issues, to achieve the effect of high-efficiency and low-pollution development and utilization, system stability, and reducing the difficulty of manufacturing and operation

Inactive Publication Date: 2014-05-07
HUAZHONG UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a lignite modification and upgrading system, which solves the low efficiency of removing pollutants such as sulfur and mercury in lignite existing in the lignite modification and upgrading system, and the polluting gas generated during the lignite upgrading process. and dust can not be effectively treated, and at the same time solve the problem that the heat of boiler exhaust gas cannot be effectively used, so as to realize the high-efficiency and low-pollution development and utilization of lignite resources

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 As shown, the embodiment of the present invention includes a raw coal bunker 1, a feeding device 2, a fluidized pyrolysis device 3, a constant flow pump 4, a vertical pipeline 5, a primary upgrading coal bunker 6, a horizontal pipeline 7, and a cyclone separator 8. The secondary upgrading coal bunker 9, the gas purification device 10 and the induced draft fan 11; the raw coal bunker 1, the feeding device 2 and the fluidized pyrolysis device 3 are sequentially connected through pipelines;

[0015] Such as figure 2 As shown, the fluidized pyrolysis device 3 is composed of a resistance heating furnace 3-1, a closed box 3-2 and an air distribution plate 3-3, and the closed box 3-2 is located in the resistance heating furnace 3-1 , the left side of the upper end surface 3-2-1 of the closed box has a material inlet 3-4, the right si...

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Abstract

The invention relates to a modification quality upgrading system of brown coal, which belongs to a brown coal quality upgrading apparatus, and solves the problem that current modification quality upgrading system removes pollutants such as sulfur and mercury with low efficiency, and generated contamination gas and dust are failed to obtain effective treatment. The modification quality upgrading system also solves the problem of ineffective utilization of boiler tail gas. The modification quality upgrading system comprises an original coal bunker, a feeding apparatus, a fluidization pyrolysis apparatus, a constant flow pump, a vertical pipeline, a first-grade quality upgrading coal bunker, a horizontal pipeline, a cyclone separator, a secondary-grade coal bunker, a gas purifying apparatus and an induced draught fan. According to the invention, brown coal in the original coal bunker is predried through flue gas, and is sent to the fluidization pyrolysis apparatus through the feeding apparatus for pyrolysis quality upgrading, the coal after quality upgrading can be separated and collected through two-grade quality upgrading coal bunkers and the cyclone separator, the pyrolysis flue gas flows through the gas purifying apparatus and is introduced in the original coal bunker as a heat source for predrying and dehydrating of raw coal. The modification quality upgrading system of brown coal has the advantages of high reliability and strong coal adaptability, enhance the quality of the quality upgraded coal, and increase the cooperation removal efficiency of the pollutants such as sulfur and mercury.

Description

technical field [0001] The invention belongs to a lignite upgrading device, in particular to a lignite modification and upgrading system, which is used for efficient, clean and low-pollution utilization of lignite. Background technique [0002] Coal is the main fossil energy available in my country. With the rapid development of the economy, high-quality coal resources are becoming less and less, and the utilization of lignite resources with a low degree of coalification, which accounts for 13% of my country's total coal reserves, has been paid more and more attention. However, the moisture content of lignite is as high as 20-60%, and the volatile content is high. , easily weathered and incinerated, not conducive to long-distance transportation, and the efficiency of direct use is low; in addition, my country's lignite resources are mainly distributed in eastern Inner Mongolia and Yunnan, while coal resources in economically developed coastal areas are relatively scarce, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04C10B49/22C10B57/10C10B57/00
Inventor 张成李冬曲世俊夏季谭鹏杨立陈刚
Owner HUAZHONG UNIV OF SCI & TECH
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