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Tunnel pipe thin-layer retort for coal and oil shale and retort process thereof

A technology of oil shale and tunnel pipe, which is applied in the dry distillation device of shale oil to produce coal tar, which can solve the problems of difficult to control the dry distillation time accurately, large heat loss in the semi-coke cooling section, and small processing capacity of a single furnace. Reach the effect of reducing oil sludge, improving the utilization rate of raw materials, and reducing the total amount of treatment

Inactive Publication Date: 2013-04-03
CHINA COAL ENERGY HEILONGJIANG COAL CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a coal, oil Shale Tunnel Tube Thin-Layer Carbonization Device and Process Method

Method used

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  • Tunnel pipe thin-layer retort for coal and oil shale and retort process thereof
  • Tunnel pipe thin-layer retort for coal and oil shale and retort process thereof
  • Tunnel pipe thin-layer retort for coal and oil shale and retort process thereof

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specific Embodiment approach 1

[0037] Specific implementation mode one: below in conjunction with attached figure 1 And attached figure 2 To further explain the specific implementation method:

[0038] In this embodiment, the coal and oil shale tunnel tube thin-layer dry distillation device includes a hopper 1, a gas seal 2, a material distribution mechanism 3, a herringbone baffle 4, a dry distillation gas heat exchange tube 7, an adjustment baffle 9, a feeding pipe 11, Composite wall 12, tunnel pipe 14, roller unloading machine 19, semi-coke unloading machine 23, scraper unloading machine 24, single-section retort chamber 25 and shell 26;

[0039] The top of the tunnel tube thin-layer carbonization device for coal and oil shale is a hopper 1, and the gas seal 2 is connected to the bottom. A herringbone baffle 4 is connected below, and multiple groups of single-section retort chambers 25 arranged at intervals are arranged in the middle of the retort device, and a retort gas outlet 10 is opened in the mi...

specific Embodiment approach 2

[0045] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the roller blanking machine 19 is a hollow circular shaft, and the outer cylindrical surface of the shaft is evenly distributed with 3 to 8 metal plates installed along the central axis and vertical to the axial surface. The metal plates are connected to the metal reinforcing plate at an interval of 0.8 to 1.5 meters, and the space between the metal plates is a semi-coke cutting trough. Other devices and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0046] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the hollow circular shaft of the roller feeder 19 is cooled by desalted water or purified retort gas. Other devices and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a tunnel pipe thin-layer retort for coal and oil shale and a retort process thereof, relates to a retort and a process for producing coal tar and shale oil, and solves the problems that the conventional retorts and processes have large heat loss at semicoke cooling sections, the retort time is difficultly controlled accurately, the oil yield is low and the treatment capacity of the single furnace is small. The retort comprises a drying section, a retort section, a high temperature cooling section and a low temperature cooling section, wherein the semicoke cooling section is divided into two sections by a roller feeding machine, heat exchange of cooling wind is carried out at the high temperature semicoke section, the low temperature cooling section is communicated with a tunnel pipe, and drying gas enters the drying section via the tunnel pipe. According to the process, retort oil gas led out from a retort oil gas outlet of a retort furnace is purified and then used as circulation retort gas, and gas led out from a drying gas outlet of the retort furnace is used as the circulation drying gas to carry out retort. With the retort and the retort process, an addition of 20 percent of semicoke residual heat is recovered from per ton raw material, the retort time is accurately controlled, the oil yield is high, and the treatment amount of the single furnace is large; and the retort and the retort process are mainly applied to the field of coal chemical industry.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a dry distillation device and a process method for producing coal tar and shale oil. Background technique [0002] my country's energy structure is rich in coal and low in oil, and coal accounts for about 70% of the total. The dominant position of energy consumption determines the efficient and clean utilization of coal, which is an important way to solve the pollution caused by coal burning and the shortage of oil in our country, and to realize the overall optimization and sustainable development of resources, energy and the environment. Most coal is rich in organic matter and organic matter contained in oil shale, and can be heated to 480°C to 900°C for dry distillation under air-isolated conditions to obtain liquid tar, solid semi-coke, and gaseous dry distillation gas. The oil produced by dry distillation is raw material oil, which can be hydrogenated to produce fuel oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B53/06C10B57/00C10B57/10
CPCY02P20/10
Inventor 宋军胡庆文牛玉梅刘跃张洪慧
Owner CHINA COAL ENERGY HEILONGJIANG COAL CHEM
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