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Gas guiding unit, gas guiding device, pulverized coal pyrolysis device and method

A technology of gas guiding unit and gas guiding device, which is applied in the field of gas guiding unit, gas guiding device, and pulverized coal pyrolysis device, and can solve the problems of low thermal efficiency of heating and cooling cycle gas, low comprehensive energy consumption of vertical furnace, and difficult gas discharge, etc. problems, to achieve the effects of low overflow speed, low ash content of coke powder, and slow pyrolysis speed

Inactive Publication Date: 2017-07-14
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them: solid heat carrier has problems such as large dust in gas and large ash content in semi-coke; rapid gas pyrolysis has problems such as large gas circulation, low thermal efficiency of heating and cooling cycle gas, and large dust in gas, while external heating vertical furnace pyrolysis Although pulverized coal has problems such as low heat transfer efficiency and small output, the vertical furnace has the advantages of low comprehensive energy consumption, small investment, and simple operation. There is a large amount of water, and there is a waste of gas when using pyrolysis gas as a heat source, etc.

Method used

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  • Gas guiding unit, gas guiding device, pulverized coal pyrolysis device and method
  • Gas guiding unit, gas guiding device, pulverized coal pyrolysis device and method
  • Gas guiding unit, gas guiding device, pulverized coal pyrolysis device and method

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Effect test

Embodiment 1

[0042] refer to figure 1 , the air guide device of this embodiment includes a plurality of air guide units, each air guide unit includes an upper vent 1, a lower vent 3 and a vent pipe 2, wherein the upper and lower vents are circular tube structures, and the vent pipe 2 is a conical tube.

[0043] Suspension connection is adopted between the connected air guide units, that is, a suspension rod 4 is installed in the lower air vent of the upper air guide unit, and a through hole is opened on the side wall of the upper air vent of the lower air guide unit, and through the air guide unit The holes are suspended from the suspension rod such that adjacent lower vents form side air intakes between lower vents. Adjacent air guide units are connected by suspension, with a certain degree of deflection between them, which is beneficial to avoid blockage of the air guide pipe when the coal material goes down.

[0044] In this embodiment, the height of the upper air vent is 40 mm, and t...

Embodiment 2

[0046] Such as figure 2 As shown, the air guide device of this embodiment includes a plurality of air guide units, and each air guide unit includes an upper vent 5, a lower vent 7 and a vent pipe 6, wherein the upper and lower vents are box-type structures, and The trachea 6 is in the shape of a truncated cone. The same connection between the connected air guide units adopts suspension rods 8 to connect.

[0047] The size of the upper vent in this embodiment is 60X1400mm; the height of the vent pipe is 100mm; the size of the lower vent is 120X1500mm.

Embodiment 3

[0049] refer to image 3 , the pulverized coal pyrolysis device of this embodiment includes a raw coal preheating device, a pulverized coal pyrolysis furnace, a semi-coke product cooling device and a semi-coke powder combustion furnace, such as Figure 4 As shown, in the pulverized coal pyrolysis furnace 9, a gas guiding device 10 described in Embodiment 1 is set every 0.5-1 meter along the width, and the taper of the conical section of the gas guiding device ensures that the pulverized coal falls naturally, and the side of the gas The inlet is not blocked by the descending coal material, which is conducive to the introduction of raw gas, and also prevents the coal material in the carbonization chamber from entering the gas guide pipe through the gas introduction hole 4 .

[0050] The steam generated when the raw coal is cooled in the raw coal preheating device is indirectly heated;

[0051]In the pyrolysis furnace, the high-temperature flue gas generated by the combustion of...

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Abstract

The invention relates to a gas guiding unit, a gas guiding device, a pulverized coal pyrolysis device and a method. The air guide unit involved includes an upper vent and a lower vent. The area of ​​the upper vent is smaller than the area of ​​the lower vent. The upper and lower vents are connected by a vent pipe, and the direction from the upper vent to the lower vent is , the cross-sectional area of ​​the vent tube increases gradually. The air guide device involved includes a plurality of air guide units, which are connected in sequence to form an air guide passage. The connection method of adjacent air guide units is: the upper vent of one air guide unit is installed on the other air guide unit. In the lower vent of the unit, and a side air inlet is formed between the lower vent and the upper vent. The pulverized coal pyrolysis device involved includes a raw coal preheating device, a pulverized coal pyrolysis furnace, a semi-coke product cooling device and a semi-coke powder combustion furnace. The method involved is to pyrolyze pulverized coal by using the above-mentioned device. The invention is convenient for coal gas export during pyrolysis of pulverized coal, less dust is entrained in the gas, and realizes pyrolysis of pulverized coal in a vertical furnace.

Description

technical field [0001] The invention relates to coal pyrolysis technology, in particular to a gas guiding unit, a gas guiding device, a pulverized coal pyrolysis device and a method. Background technique [0002] There are many technologies for pulverized coal pyrolysis at home and abroad, but mainly include external heat pyrolysis, solid heat carrier pyrolysis, rapid gas pyrolysis, etc. [0003] Among them: solid heat carrier has problems such as large dust in gas and large ash content in semi-coke; rapid gas pyrolysis has problems such as large gas circulation, low thermal efficiency of heating and cooling cycle gas, and large dust in gas, while external heating vertical furnace pyrolysis Although pulverized coal has problems such as low heat transfer efficiency and small output, the vertical furnace has the advantages of low comprehensive energy consumption, small investment, and simple operation. There is a large amount of water, and there is a waste of gas when using p...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/00C10B47/00
CPCY02P20/129
Inventor 赵鹏冯雷马飞姜国璋李建发高光耀
Owner CHANGAN UNIV
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