Huadian type process and device for dry distillation of oil shale

A technology of oil shale and dry distillation, which is applied in special forms of dry distillation, petroleum industry, direct heating dry distillation, etc. It can solve the problems of expensive imported equipment, ineffective use of semi-coke, and small daily processing capacity.

Active Publication Date: 2011-01-12
辽宁成大能源科技有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of small daily processing capacity, large floor area, low oil recovery rate, environmental pollution, semi-coke not being effectively utilize

Method used

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  • Huadian type process and device for dry distillation of oil shale
  • Huadian type process and device for dry distillation of oil shale
  • Huadian type process and device for dry distillation of oil shale

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Embodiment Construction

[0064] Process flow of the present invention such as figure 1 As shown in the figure, the flow of this new process is mainly reflected in the figure, which are: ore crushing and screening, grading and siloing, drying and preheating, grading dry distillation, condensation recovery, gas desulfurization, and gas heating. Different grades of oil shale are sent to dry distillation furnaces of different specifications for dry distillation; the full cycle process of gas and the condensation recovery system of oil and gas are clearly reflected. Specifically include the following steps:

[0065] 1. Crushing and screening: The oil shale less than 300mm mined from the mine is crushed by crushing and screening equipment into three different specifications: small, medium and large. As a result, the specific specifications should ensure that the ratio of sieved products is: small: medium: large = 1:2:2. In actual operation, it can be realized by adjusting the aperture of the sieve plate....

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Abstract

The invention provides a process and device for carrying out stage dry distillation on oil shale under the state of full recycle, with the gas as the heat carrier. The oil shale is divided into three different sizes (such as 0-6mm, 6-20mm and 20-50mm) through crushing and screening, and the oil shale is firstly dried and heated to the temperature between 50 DEG C and 150 DEG C by the waste smoke exhausted from gas heating furnaces and then enters into the different sizes of furnaces for dry distillation to undergo dry distillation. After being treated by water spraying and an indirect cooling tower, a rotary trapper and an electric trapper for oil collection, the dry distillation oil and gas undergo oil-gas-water separation, and after separation, the oil enters into a storage tank, the water enters into a circulating water tank and the first part of gases serves as the heat carrier and is recycled, the second part of gases is used as the fuels for the heating furnaces and the third part of gases is used as the fuel gases for power generation.

Description

technical field [0001] The invention relates to a technique and a device for performing graded dry distillation of oil shale with gas as a heat carrier under the state of full gas circulation. Background technique [0002] Oil shale is a new energy that can replace petroleum. my country is rich in oil shale resources, hundreds of times the oil reserves, but the level of development and utilization is very low. In 2009, the national shale oil output was only over 300,000 tons, and the development potential is extremely considerable. The main reason for the low level of development and utilization is the backward process and equipment. At present, the domestic oil shale dry distillation refining method is called "Fushun process" in the industry. The main equipment is Fushun type circular furnace, which is a semi-internal combustion and semi-circulation process. The main equipment of this process is a combustion device at the lower part of the retort furnace. Moisture-satura...

Claims

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Application Information

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IPC IPC(8): C10B53/06C10B49/02C10B57/10C10B15/00C10K1/00
Inventor 吴启成王鸿治王志奉张卫军郭华峰刘婵
Owner 辽宁成大能源科技有限公司
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