Low-rank coal adiabatic pyrolysis device

A low-rank coal and thermal insulation technology, which is applied in the direction of direct heating dry distillation, special form dry distillation, petroleum industry, etc., can solve the problems of high strength requirements of reactor materials, easy wear and tear, difficult maintenance and other problems, and achieve easy control of residence time and increase heat High solution efficiency and good heat insulation effect

Inactive Publication Date: 2015-05-13
TAIYUAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

The disadvantage of this kind of adiabatic reactor is that the temperature control of the electric furnace is adjusted by the temperature change of the reactor, there is a lag problem in temperature tracking, the heat transfer from the periphery to the inside is slow, it takes a long time, the op

Method used

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  • Low-rank coal adiabatic pyrolysis device
  • Low-rank coal adiabatic pyrolysis device
  • Low-rank coal adiabatic pyrolysis device

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Example Embodiment

Specific embodiment 1

Example Embodiment

[0039] The implementation of a low-rank coal adiabatic pyrolysis device is to install a gas insulation layer and an external insulation layer on the periphery of the dry distillation chamber, and when the low-rank coal adiabatic pyrolysis reaction is carried out, the gas insulation chamber layer is introduced and the pyrolysis reaction The isothermal heat-carrying temperature gas makes the wall temperature of the reaction device basically the same as the central reaction temperature of the reaction device, and the gas insulation layer does not exchange heat with the drying chamber / drying chamber to avoid reduction of heat loss. The specific improvement measures adopted are to coaxially set a gas insulation layer jacket around the outer wall of the dry distillation chamber, and set a hot gas circulation pipeline, so that the heated gas enters the insulation gas inlet and high temperature gas inlet of the adiabatic reaction device respectively. The heat-carrying gas passes through...

Example Embodiment

Specific embodiment 2

[0049] The second embodiment is an example based on the first embodiment, and those skilled in the art can implement the technical solutions of the present invention according to the following specific embodiments.

[0050] As attached figure 1 , N 2 After the 30kw heater is heated to 600°C, the high-temperature gas inlet and the insulation gas inlet of the adiabatic retorting chamber are introduced, and the temperature of the inlet of the adiabatic retorting chamber and the temperature of the central zone are measured. Image 6 , It can be observed from the attached drawings that without adding coal, the basic heat loss is within the acceptable range≦30°C, which ensures the insulation effect of the device.

[0051] As attached figure 1 , 3kg of lignite with a particle size of 1~5mm, rely on gravity, enter the reaction device from the hopper, N 2 After the 15KW heater is heated to about 300°C, it is passed into the gas insulation layer and the adiabatic drying ...

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Abstract

The invention relates to a low-rank coal adiabatic pyrolysis device which is composed of a charging hopper, an adiabatic drying chamber, an adiabatic dry distillation chamber and a coke quenching tank which are communicated in sequence, wherein the adiabatic drying chamber is the same as the adiabatic dry distillation chamber in diameter and size; gas insulation layers which have the same temperature as the adiabatic drying chamber and the adiabatic dry distillation chamber are respectively arranged on the peripheries; outer insulation layers are respectively arranged on the peripheries of the adiabatic drying chamber and the adiabatic dry distillation chamber. The low-rank coal adiabatic pyrolysis device is simple in structure and good in adiabatic effect, coal materials move downwards by means of gravity, tail gas generated in the drying process and tail gas generated in the pyrolysis process are separately processed, the retention time of discharge quantity is easy to control, and the air inlet temperature is basically consistent with the center temperature of a reactor, so that the pyrolysis efficiency of a coal pyrolysis reactor is greatly improved.

Description

technical field [0001] The invention relates to a low-rank coal pyrolysis reactor, in particular to a gas heat-carrying coal pyrolysis device comprising a charging hopper, an adiabatic drying chamber, an adiabatic carbonization chamber and a coke quenching tank. Background technique [0002] During the pyrolysis process of low-rank coal, using gas heat carrier to carry out coal pyrolysis can improve the heat exchange efficiency between coal and heat carrier. An important pathway for the efficiency of bulk thermal pyrolysis reactions. [0003] The thermal insulation structure of the existing coal pyrolysis reactor is mainly wrapped with high-temperature refractory fiber material around the reactor, and wrapped with resistance wire around the outer wall of the reactor to form the thermal insulation structure. [0004] Available prior art, such as the publication number 102559222A discloses "a low-temperature carbonization furnace" which provides a low-temperature carboniz...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B49/02C10B57/10
CPCC10B49/02C10B53/04C10B57/10
Inventor 李涛张永发王影乔星星王琪
Owner TAIYUAN UNIV OF TECH
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