Low-order coal heat insulation pyrolysis device

A low-rank coal, adiabatic technology, used in charging devices, special forms of dry distillation, petroleum industry, etc., can solve the problems of high strength requirements of reactor materials, easy loss, difficult maintenance, etc. Solution efficiency, good thermal insulation effect

Inactive Publication Date: 2017-05-31
曹淅
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 operation is complicated, and the maintenance is difficult
In this invention, maintaining the vacuum state of the vacuum jacket requires high energy consumption, requires high strength of the reactor material, and is easy to wear and tear, which is not conducive to large-scale industrial application.

Method used

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  • Low-order coal heat insulation pyrolysis device
  • Low-order coal heat insulation pyrolysis device
  • Low-order coal heat insulation pyrolysis device

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specific Embodiment approach 1

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 1 To implement a low-rank coal adiabatic pyrolysis device, a gas insulation layer and an outer insulation layer are arranged in sequence around the retort chamber, and when the low-rank coal adiabatic pyrolysis reaction is performed, the gas insulation layer is passed into the gas insulation chamber layer. The heat-carrying temperature gas that is isothermal with the pyrolysis reaction makes the wall temperature of the reaction device basically consistent with the central reaction temperature of the reaction device, and the gas insulation layer does not exchange heat with the drying chamber / distillation chamber to avoid heat loss reduction. The specific improvement measures taken are to coaxially install a gas insulation layer jacket around the outer wall of the retort, and set up a hot gas circulation pipeline, so that the heated gas enters from the insulation gas inlet and the high temperature gas inlet of the adiabatic r...

specific Embodiment approach 2

[0046] Specific Embodiment 2 This specific embodiment 2 is an embodiment carried out on the basis of the specific embodiment 1, and those skilled in the art can realize the technical solution of the present invention according to the following specific embodiments.

[0047] as attached figure 1 , N2 is heated up to 600°C by a 30kw heater, and is introduced from the high-temperature gas inlet and the insulating gas inlet of the adiabatic retort chamber. Figure 6 , It can be observed from the attached figure that the basic heat loss is within the acceptable range≦30°C without adding coal material, which ensures the thermal insulation effect of the device.

[0048] as attached figure 1 , 3kg of lignite with a particle size of 1-5mm enters the reaction device from the hopper by gravity, and N2 heats up to about 300°C through a 15KW heater, and then passes into the gas insulation layer and the adiabatic drying chamber respectively, preheating and drying the adiabatic drying chamb...

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Abstract

The invention relates to a low-order coal heat insulation pyrolysis device. The low-order coal heat insulation pyrolysis device is formed by sequentially communicating a material charging hopper, a heat insulation drying chamber, a heat insulation dry distillation chamber, and a coke quenching tank, wherein the diameter of the heat insulation drying chamber is the same with the diameter of the heat insulation dry distillation chamber; gas heat insulation layers are respectively arranged at the periphery and have the same temperature with the heat insulation drying chamber and the heat insulation dry distillation chamber; outer heat insulation layers are respectively arranged at the peripheries of the heat insulation drying chamber and the heat insulation dry distillation chamber. The low-order coal heat insulation pyrolysis device has the advantages that the structure is simple, the heat insulation effect is good, and the coal is discharged under the gravity action; the tail gas produced in the drying process is separated from the tail gas produced in the pyrolysis process, the material discharging amount and the dwelling time can be easily controlled, the air intake temperature is basically uniform with the center temperature of the reactor, and 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 carbonizatio...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B31/00
CPCC10B53/04C10B31/00
Inventor 曹淅
Owner 曹淅
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