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Oil shale retorting method as well as dynamic grate type retort furnace for realizing same and application thereof

A technology for oil shale and dry distillation furnace, which is applied in the field of dry distillation of oil shale, can solve problems such as waste, and achieve the effects of reducing separation cost, heat loss and extraction cost.

Active Publication Date: 2011-05-11
SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. Solve the problem of separation of circulation volume and treatment volume, so that the treated product gas no longer flows or only has a small amount of reflux when necessary, and avoids the need to cool down in the process of oil and vapor extraction and the return cycle to the greatest extent. Double energy waste when heating up

Method used

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  • Oil shale retorting method as well as dynamic grate type retort furnace for realizing same and application thereof
  • Oil shale retorting method as well as dynamic grate type retort furnace for realizing same and application thereof
  • Oil shale retorting method as well as dynamic grate type retort furnace for realizing same and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1, as figure 1 shown.

[0068] exist figure 1 In the example 1 shown, the moving grate type retort furnace is divided into three sections: the first section is the feed section, the second section is the dry distillation section, and the third section is the discharge section of the oil shale semi-coke. When the moving grate rotates on a circular track, its first and third sections are connected end-to-end. At this time, its structural treatment can refer to related existing technologies, including rotary hearth furnaces, ring coolers, etc. ;When the moving grate is dragged by the chain for translational movement, it and the chain also have a no-load return section connected end to end, but it is not shown in the figure. In order to facilitate sealing, it is recommended that this return section also If it is fully enclosed, at this time, its structural treatment can refer to related existing technologies, including chain grate machines and so on.

[0069] e...

Embodiment 2

[0073] Example 2, as figure 2 shown.

[0074] This embodiment is an improved solution based on Embodiment 1.

[0075] exist figure 2 In the illustrated embodiment 2, in addition to changing the communication relationship and direction of the pipes 5 and 4, valves 16, 17, 18, 19 and 20 are also added; at the same time, the air string hole 6 in the embodiment 1 is cancelled. ; the rest are the same as in Example 1.

[0076] By adjusting the opening of the valve 16, the outgoing amount of shale oil and gas can be adjusted; when the valves 17, 18, and 19 are opened, the valve 20 is closed and the operation of the fan 11 is stopped, and the single fan is in the circulating operation state; when After closing the valves 17, 18 and 19, opening the valve 20 and starting the fan 11, it enters the operation state of the double fan. The furnace gas is sent to the heating chamber on the far left. On the one hand, since the temperature of the raw oil shale that has just entered the f...

Embodiment 3

[0078] Example 3, as image 3 shown.

[0079] This embodiment has made great changes on the basis of the above-mentioned embodiment, and is mainly used to reflect the characteristics when the movable grate 1 has a chain structure.

[0080] In this embodiment, in addition to changing the communication relationship and direction of the pipes 4 and 5, the fan 11 is also eliminated. At the same time, a separator 26 for extracting a small amount of oil and water components from the circulating gas and a heat exchanger 39 for returning the temperature of the circulating gas to the original level are added. Of course, the "temperature return to the original level" mentioned here , does not rule out that the temperature has increased on the original basis, such as an increase of about 10%. At this time, the separated oil and water components can be discharged from the channel 27; the purpose is to make the concentration of the oil and vapor components in the circulating gas signific...

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Abstract

The invention provides an oil shale retorting method as well as a dynamic grate type retort furnace for realizing the same and application thereof, belonging to the technical fields of the extraction of shale oil gas from oil shale and the extraction of oil and combustible gas from soft coal. The oil shale retorting method comprises the steps of crushing the oil shale, charging into a furnace, heating, collecting shale retorting gas, collecting shale semicokes and the like and the use of heat-carrying gas. The oil shale retorting method is characterized in that the ratio of the circulating amount of the heat-carrying gas for the retorting furnace in the furnace to the processing amount of the heat-carrying gas for oil-gas extraction is not less than 3.5. By means of the invention, the problems on the separation of circulation amount and the processing amount is solved, and the minimization of the processing amount can be realized; the air injection can also be avoided so that the quality of product gas is improved and particularly the unit heat value of the product gas is improved; and moreover, by means of the high-multiple inner circulation of the heat-carrying gas inside the retorting furnace, the heat loss and the like of the heat-carrying gas in the process can be reduced. Therefore, the oil shale retorting method is particularly suitable for the technical fields of the extraction of the shale oil gas from the oil shale and the extraction of the oil and combustible gas from the soft coal.

Description

technical field [0001] The invention relates to a dry distillation method for oil shale, a dynamic grate dry distillation furnace specially used for realizing the method and its use, and belongs to the technical field of extracting shale oil and combustible gas from oil shale. Meanwhile, the dry distillation method and the dry distillation furnace are also suitable for the technical field of extracting oil and combustible gas from bituminous coal. Background technique [0002] The development and utilization of oil shale is an important topic at present. Extracting shale oil and combustible gas from oil shale, selecting an appropriate dry distillation method for oil shale and a dry distillation furnace for realizing the method are one of the keys. [0003] In the patent application document with the application number 87102476 published by the State Patent Office, a method for dry distillation of oil shale is implicitly disclosed. The method includes the steps of crushing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B49/02C10B53/06C10B53/04C10B15/00
Inventor 姚朝胜杨东进钱纲黄东生
Owner SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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