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Active coke preparation device and method

A preparation device and activated coke technology, which is applied in the field of coal chemical industry, can solve the problems of high cost, tar clogging, poor continuous operation ability, etc., and achieve the effect of alleviating easy clogging, low operation cost, and continuous and stable preparation

Active Publication Date: 2017-05-10
CHNA ENERGY INVESTMENT CORP LTD +2
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Problems solved by technology

[0005] The main purpose of the present invention is to provide an active coke preparation device and method to solve the problems of high cost, poor continuous operation ability and prone to tar blockage in the preparation of active coke in the prior art

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  • Active coke preparation device and method

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Embodiment 1

[0048] Such as figure 1 As shown, the device for preparing active coke by the two-step method of the present invention, taking boiler combustion flue gas as fluidization gas and bituminous coal for preparing active coke as an example, introduces the working principle of the device as follows:

[0049] Operating parameters: the flue gas temperature is 1000°C; the operating temperature of the low-temperature pyrolysis furnace 10 is 500°C; the operating temperature of the circulating fluidized bed body 21 is 850°C; The processing device 30 is a boiler, and the pyrolysis gas is used for combustion to generate heat; the separation particle size of the first gas-solid separation device 22 is greater than 150 μm; the second gas-solid separation device 23 can separate active coke with a particle size of less than 100 μm.

[0050] Gas flow: the flue gas at 1000°C enters the heat exchanger 60, and enters the low-temperature pyrolysis furnace 10 in the form of fluidized air after cooling...

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Abstract

The invention provides an active coke preparation device and method. The active code preparation device comprises a low-temperature pyrolysis furnace and a circulating fluidized bed device, wherein a coal material feeding opening, a first smoke gas inlet and a hot semi-coke outlet are formed in the low-temperature pyrolysis furnace; a hot semi-coke inlet, a second hot smoke gas inlet and an active coke outlet are formed in the circulating fluidized bed device; the hot semi-coke inlet communicates with the hot semi-coke outlet. By using the active coke preparation device, the active coke can be prepared by a two-step method. In the first step, the coke preparing coal is subjected to low-temperature pyrolysis and abrasion in the low-temperature pyrolysis furnace to form hot semi-coke with smaller particle diameters; in the second step, the hot semi-coke is subjected to deep pyrolysis and abrasion in the circulating fluidized bed device to form an active coke product. On one hand, the tar-containing pyrolysis gas and the active code can be prepared in a separated way, so that the problem of easy blockage due to tar separation can be favorably solved; on the other hand, the active code can be continuously and stably prepared; the operation cost is lower; the device and the method are very suitable for industrial large-scale application.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to an active coke preparation device and method. Background technique [0002] Activated coke flue gas purification technology has a wide range of applications and a large amount of flue gas treatment. The desulfurization efficiency of activated coke can reach 90%, and the denitrification efficiency can reach 80%. It has outstanding advantages in resource recovery and water saving. Activated coke flue gas purification technology is suitable for coal-fired industrial boilers and various waste gas treatment produced by roasting in chemical, metallurgical, steel and other industries and coal-fired power plant boiler flue gas treatment. [0003] At present, fixed bed or moving bed is usually used to prepare active coke. The output of a single equipment is low, the continuous production capacity is poor, and the production energy consumption is high. In addition, a lot of tar will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/02C10B57/14C10B57/16C10B53/04C10B49/10
CPCC10B49/10C10B53/04C10B57/02C10B57/14C10B57/16
Inventor 杨春振张波郇庆超张梦泽李洪梅
Owner CHNA ENERGY INVESTMENT CORP LTD
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