A rapid coal pyrolysis reaction device and a coal pyrolysis reaction system based on the device

A pyrolysis reaction and reaction system technology, applied in the direction of direct heating dry distillation, special form dry distillation, petroleum industry, etc., can solve the problems of slow heat and mass transfer of cold and hot materials, uneven distribution of internal temperature field, slow heating rate, etc. Achieve the effect of rapid pyrolysis, high utilization rate of raw materials, and rapid heat and mass transfer

Active Publication Date: 2018-10-09
BEIJING HUASHI UNITED ENERGY TECH & DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, a fluidized bed pyrolysis reactor is used for coal pyrolysis reaction, and the heat and mass transfer of the cold and hot materials inside the reactor is relatively slow, resulting in uneven distribution of the internal temperature field and a rise in temperature. The rate is slow, and part of the raw coal flows out of the reactor before the pyrolysis reaction occurs, and the tar yield is low. Therefore, a low-order low-order reactor that can realize rapid heat and mass transfer of cold and hot materials, fast pyrolysis, and high tar yield is proposed. Coal rapid pyrolysis reaction device

Method used

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  • A rapid coal pyrolysis reaction device and a coal pyrolysis reaction system based on the device

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Embodiment 1

[0032] This embodiment provides a coal pyrolysis reaction system, the structure of which is as follows figure 1 As shown, the connected arrangement includes: a raw coal preheater 1, a coal rapid pyrolysis reaction device 2, a burner 3, a separation dust removal device, and a spray purification unit 6.

[0033] The raw coal preheater 1 is used for preheating raw coal. The top of the raw coal preheater 1 is provided with a raw coal input port, the lower portion is provided with a coal outlet, and the upper portion is provided with a flue gas output port; Upstream of the preheater 1, connected to the raw coal input port of the raw coal preheater 1, a crushing chamber 11, a sorting chamber 12, and a particle size adjusting chamber 13 are arranged in order to screen the raw coal before preheating; Downstream of 1, a dry coal bunker 15 is arranged in connection with the coal outlet of the raw coal preheater 1, and a separator 14 is arranged in connection with the flue gas outlet of ...

Embodiment 2

[0046] This embodiment provides a coal pyrolysis reaction system, the structure of which is as follows figure 1 As mentioned above, the connected arrangement includes: a raw coal preheater 1, a coal rapid pyrolysis reaction device 2, a burner 3, a separation and dust removal device, and a spray purification unit 6.

[0047] The raw coal preheater 1 is used for preheating raw coal. The raw coal preheater 1 is provided with a raw coal input port at the top, a high temperature flue gas input port at the bottom, a coal outlet at the lower portion, and a coal outlet at the upper portion. The flue gas output port; upstream of the raw coal preheater 1, connected to the raw coal input port of the raw coal preheater 1 in sequence, there are a crushing chamber 11, a sorting chamber 12, and a particle size adjustment chamber 13, which are used for preheating. The raw coal is screened; at the downstream of the raw coal preheater 1, a dry coal bunker 15 is connected to the coal outlet of t...

Embodiment 3

[0060] This embodiment provides a coal pyrolysis reaction system, the structure of which includes: a raw coal preheater 1, a rapid coal pyrolysis reaction device 2, a separation and dust removal device, and a spray purification unit.

[0061] The coal rapid pyrolysis reaction device 2 is provided with a straight pipe pyrolysis section 21 and a gas-solid separation chamber 23 in sequence from bottom to top; the bottom of the straight pipe pyrolysis section 21 is provided with a crude gas inlet, and the lower part is provided with a coal inlet and a high temperature The carrier inlet is provided with a discharge port at the top; the length-to-diameter ratio of the straight pipe pyrolysis section 21 is 40:1;

[0062] The gas-solid separation chamber 23 is located above the straight pipe pyrolysis section 21 and is connected to the upper end of the straight pipe pyrolysis section 21; the top end of the straight pipe pyrolysis section 21 extends to the gas-solid Set in the separati...

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Abstract

The invention provides a rapid coal pyrolytic reaction device. A straight pipe pyrolysis section and a gas-solid separation bin are arranged on the rapid coal pyrolytic reaction device in sequence from bottom to top, pyrolysis is conducted on raw material coal at the straight pipe pyrolysis section, a dry-distilled product is obtained and rapidly upward enters the gas-solid separation bin to be separated to obtain a carrier and a gas product, the carrier obtained after separation is discharged from a carrier outlet, the gas product is discharged from a gas outlet, the whole pyrolytic process is controlled to be within 10-20 seconds, coal pyrolysis can be completed rapidly, and meanwhile the carrier and the gas product can be led out rapidly. The utilization rate of raw materials reaches up to 100%, and the tar yield is high.

Description

technical field [0001] The invention relates to a coal rapid pyrolysis reaction device and a coal pyrolysis reaction system based on the device, belonging to the technical field of coal pyrolysis devices. Background technique [0002] The notable features of my country's energy resources are rich coal, little oil, and lack of gas. However, at present, coal resources are often used as a single purpose, most of which are mainly direct combustion, and other gasification and liquefaction are also based on a single process. Coal direct combustion simply uses coal as a fuel, and cannot effectively utilize the high-value components contained in coal; and in the single transformation process of coal gasification, liquefaction, etc., the reaction speed of solid particles decreases with the increase of the degree of transformation. In order to achieve higher conversion efficiency, measures must be taken to convert the parts that are difficult to convert, which leads to complex techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B49/16C10B53/04C10B57/10
Inventor 李林路阳李春桃
Owner BEIJING HUASHI UNITED ENERGY TECH & DEV
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