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

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

Active Publication Date: 2015-03-18
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

[0068] Example 1, such as figure 1 shown.

[0069] exist figure 1 In the shown embodiment 1, the moving grate type dry distillation furnace is divided into 3 sections: the first section is the feeding 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 is rotating on the circular track, its first section and third section are connected end to end. At this time, its structural treatment can refer to relevant 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 have a section of unloaded return section connected end to end, which is not shown in the figure. In order to facilitate sealing, it is recommended that the return section also Give fully enclosed, at this moment, its structural processing can refer to relevant prior art, comprise chain grate etc.

...

Embodiment 2

[0074] Example 2, such as figure 2 shown.

[0075] This embodiment is an improvement on the basis of Embodiment 1.

[0076] exist figure 2 In the shown embodiment 2, in addition to changing the communication relationship and direction of the pipelines 5 and 4, valves 16, 17, 18, 19 and 20 are added; at the same time, the cross-gas hole 6 in the embodiment 1 is cancelled. ; All the other are then identical with embodiment 1.

[0077] By adjusting the opening of the valve 16, the delivery volume of shale oil and gas can be adjusted; when the valves 17, 18, 19 are opened, the valve 20 is closed and the operation of the fan 11 is stopped, the single fan cycle operation state is entered; After closing the valves 17, 18, 19, opening the valve 20 and starting the blower 11, it enters into the operation state of the double fans. At this time, the blower 10 still provides the power for circulating operation, and the blower 11 turns the relatively high temperature Furnace gas is s...

Embodiment 3

[0079] Example 3, such as image 3 shown.

[0080] This embodiment has undergone major changes on the basis of the above-mentioned embodiments, and is mainly used to reflect the characteristics when the moving grate 1 has a chain structure.

[0081] In this embodiment, in addition to changing the communication relationship and direction of the pipelines 4 and 5, the fan 11 is also eliminated. At the same time, a separator 26 for extracting a small amount of oil-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 is returned to the original level" as described here. , does not rule out that the temperature is 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 circul...

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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 carbonization method of oil shale, a dynamic grate type carbonization furnace specially used for realizing the method and its application, and belongs to the technical field of extracting shale oil and combustible gas from oil shale. At the same time, 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. One of the keys is to extract shale oil and combustible gas from oil shale, choose the appropriate dry distillation method for oil shale and the dry distillation furnace to realize the method. [0003] In the patent application document with the application number 87102476 published by the State Patent Office, a dry distillation method for oil shale is implicitly disclosed. The method includes steps such as cr...

Claims

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Application Information

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Patent Type & Authority Patents(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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