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Process and device for dry distillation of oil shale with low gas content

A technology of oil shale and dry distillation, which is applied in the petroleum industry, special forms of dry distillation, direct heating dry distillation, etc. It can solve the problems of process failure and circulating gas heating, so as to reduce the formation of oil sludge, reduce the oil recovery rate, and ensure normal operation The effect of operation

Inactive Publication Date: 2011-07-27
吴启成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the oil shale in Jimsar, Xinjiang uses this kind of heating furnace to heat the circulating gas. Since the gas content is only about 2%, the circulating gas cannot be heated to about 700°C, and the process cannot be established.

Method used

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  • Process and device for dry distillation of oil shale with low gas content
  • Process and device for dry distillation of oil shale with low gas content
  • Process and device for dry distillation of oil shale with low gas content

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Embodiment Construction

[0040] Process flow of the present invention such as figure 2 As shown in the figure, the flow of this new process is mainly reflected in the figure, which are: ore crushing and screening, classification and storage, purification and dust removal, dry distillation and oil refining, condensation and oil recovery, gas heating, and flue gas desulfurization. The specific process is: crushing and screening the ore into specifications that meet the technical requirements of the retort furnace. Generally, crushing and screening are divided into specifications of 0-6mm, 6-20mm and 20-50mm; the ore conveying system is sent to different silos for storage according to the specifications of the ore; when the retort furnace is working, the oil shale is first sent into the The vibrating dust collector purifies and removes dust. In the vibrating dust collector, the oil shale is added from the upper part, falls onto the vibrating bed, and falls layer by layer. Dust and small particles less...

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Abstract

The invention discloses a process and a device for dry distillation refining of oil shale with low gas content, low fixed carbon content and low water content. The invention is characterized in that: tiny dust in the oil shale is removed by a vibration deduster; gas generated through dry distillation serves as a heat carrier for dry distillation refining of the oil shale; and the gas is heated and cycled by an external combustion regenerative heating furnace. The process flow comprises the following steps of: crushing and screening; grading and warehousing; purifying and dedusting; performing dry distillation refining; condensing and collecting oil; heating the gas; and desulfurizing flue gas. The device for dry distillation refining is an optimized combination of general equipment and proprietary equipment, and the oil recovery rate is over 85 percent.

Description

technical field [0001] The invention relates to a process and a device for dry distillation and oil refining of oil shale with low gas content. Background technique [0002] Different qualities of oil shale require different dry distillation processes, or in other words, different dry distillation processes can only be used within a certain range. Data show that the gas content in oil shale varies greatly. The gas content in oil shale in my country is usually between 1% and 30%, and the gas content in most oil shale is usually 3% to 6%. between. When the gas content in oil shale is low, if the Fushun process, Maoming process, Huadian process, etc. are still simply used for carbonization and refining, the effect will be very poor, and the oil recovery rate will be very low, making carbonization and refining uneconomical. The system doesn't even work at all. For example, the oil shale in Jimsar, Xinjiang has an average oil content of about 7% and a surface water content of a...

Claims

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Application Information

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IPC IPC(8): C10B53/06C10B49/02C10B57/00
Inventor 吴启成
Owner 吴启成
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