Device and method for pyrolyzing pea coal by utilizing internally heated vertical furnace

An internal heating type, vertical furnace technology, applied in the field of coal chemical industry, can solve the problems of low calorific value and high nitrogen content, and achieve the effect of good semi-coke quality, simple operation and reduced nitrogen content

Active Publication Date: 2013-12-25
陕西凯德利能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high nitrogen content and low calorific value in the gas produced by the internal heating vertical furnace, it is urgent to provide a new furnace type that can significantly reduce the nitrogen content in the gas and produce high calorific value gas

Method used

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  • Device and method for pyrolyzing pea coal by utilizing internally heated vertical furnace
  • Device and method for pyrolyzing pea coal by utilizing internally heated vertical furnace
  • Device and method for pyrolyzing pea coal by utilizing internally heated vertical furnace

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Effect test

Embodiment 1

[0031] Depend on Figure 1~3 It can be seen that the device for pyrolyzing granulated coal using an internal heating type vertical furnace in this embodiment is composed of a bag filter 1, a gas heat exchanger 2, a combustion furnace 3, a high-temperature steam circulation fan 4, an internal heating type vertical furnace 5, and a drying steam circulation fan 6. A micro-cyclone dust collector 7, a quench cooler 8, a raw gas heat exchanger 9, a horizontal tube cooler 10, an electric tar replenisher 11 and a gas circulation fan 12 are connected to form.

[0032] The internal heating type vertical furnace 5 of the present embodiment adopts a square furnace, and the furnace wall is formed by pouring a heat-insulating refractory material and a wear-resistant refractory material, see figure 2 , the internal heating type vertical furnace 5 is divided into a feed hopper 5-1, a drying section 5-2, a first transition section 5-3, a pyrolysis section 5-4, a pyrolysis section 5-5, and a p...

Embodiment 2

[0057] The drying section 5-2 of the present embodiment is provided with a dry steam inlet chamber 5-2-4 and a dry steam outlet chamber 5-2-3 respectively on the left and right sides of the drying chamber 5-2-5. Room 5-2-5 is equipped with 4 rows of dry steam export tanks 5-2-1 and 3 rows of dry steam import tanks 5-2-2, dry steam export tanks 5-2-1 and dry steam import tanks 5-2 -2 Arranged staggered up and down, in the horizontal direction, each row is arranged with 15 dry steam outlet grooves 5-2-1 or dry steam inlet grooves 5-2-2, the groove spacing is 400mm, in the vertical direction, The distance between a row of dry steam outlet grooves 5-2-1 and an adjacent row of dry steam inlet grooves 5-2-2 is 1200 mm. The dry steam outlet grooves 5-2-1 and the dry steam inlet grooves 5-2 of this embodiment The longitudinal section of 2-2 is an inverted V-shaped groove extending longitudinally on both sides. The apex angle of the inverted V-shaped groove is 55°C, the length of the s...

Embodiment 3

[0066]The drying section 5-2 of the present embodiment is provided with a dry steam inlet chamber 5-2-4 and a dry steam outlet chamber 5-2-3 respectively on the left and right sides of the drying chamber 5-2-5. Chamber 5-2-5 is equipped with 7 rows of dry steam export tanks 5-2-1 and 6 rows of dry steam import tanks 5-2-2, dry steam export tanks 5-2-1 and dry steam import tanks 5-2 -2 Arranged staggered up and down, in the horizontal direction, each row is arranged with 10 dry steam outlet grooves 5-2-1 or dry steam inlet grooves 5-2-2, the groove spacing is 800mm, in the vertical direction, The distance between a row of dry steam outlet grooves 5-2-1 and an adjacent row of dry steam inlet grooves 5-2-2 is 800 mm. The dry steam outlet grooves 5-2-1 and the dry steam inlet grooves 5-2 of this embodiment The longitudinal section of 2-2 is an inverted V-shaped groove extending longitudinally on both sides. The apex angle of the inverted V-shaped groove is 65°C, the length of the ...

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Abstract

The invention relates to a device and method for pyrolyzing pea coal by utilizing an internally heated vertical furnace. The device comprises an internally heated vertical furnace, wherein a feed hopper, a drying section, a first transition section, a pyrolysis section I, a pyrolysis section II, a second transition section, a cooling section, a discharge valve and a discharge hopper are arranged on the internally heated vertical furnace sequentially from top to bottom, wherein the drying section is communicated with a dry steam circulating fan and a high-temperature steam circulating fan; the dry steam circulating fan is communicated with the cooling section; the pyrolysis section I is communicated with a coal gas heat exchanger and a micro-cyclone dust collector; the micro-cyclone dust collector is communicated with a quencher; the quencher is communicated with a raw gas heat exchanger; the raw gas heat exchanger is communicated with a coal gas heat exchanger and a horizontal water-tube cooler; the horizontal water-tube cooler is communicated with an electrical tar precipitator; the pyrolysis section II is communicated with a combustion furnace and the micro-cyclone dust collector; the combustion furnace is communicated with the coal gas heat exchanger. The device and method are easy to operate, high in heat efficiency, environment-friendly and high in carbocoal quality, and the coal gas can be recycled.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to a device and a method for preparing coal tar, active semi-coke and gas by pyrolyzing granular coal. Background technique [0002] Over the years, a series of studies have been carried out at home and abroad on the production of semi-coke, coal tar and gas by pyrolysis of coal. So far, the types of coal pyrolysis furnaces that have undergone pilot or industrial experiments or industrial production mainly include: internal heating vertical furnace, rotary furnace, rotary furnace, belt furnace, stirred bed furnace, fluidized bed furnace, entrained flow bed Furnace etc. Due to the characteristics of simple structure, low investment and easy operation, the internal heating vertical furnace using lump coal (block diameter 20-80mm) as raw material has been widely used in the production of semi-coke, coal tar and gas by coal pyrolysis in my country. Applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/10C10B51/00
Inventor 王树宽杨占彪
Owner 陕西凯德利能源科技有限公司
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