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A method and device for recovering oily substances in gas

A technology for coal gas and oil, applied in the field of recovering oil substances in coal gas, can solve the problems of large water resource consumption and low tar recovery efficiency, and achieve the effects of low operating cost, high tar recovery rate and low consumption.

Active Publication Date: 2016-01-06
陕西延长石油(集团)有限责任公司碳氢高效利用技术研究中心
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Problems solved by technology

This method of water washing and cooling requires a large amount of water resources, and the recovery efficiency of tar is very low, and the existing tar recovery method cannot be operated under pressurized conditions

Method used

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  • A method and device for recovering oily substances in gas

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the drawings.

[0027] See figure 1 The device of the present invention includes a gas washing system, a cooling recovery system and a tail oil recovery system.

[0028] The gas washing system includes a washing liquid 2, a washing liquid pump 3, and a separation tower 4, and the outlet of the washing liquid pump 3 is in communication with the separation tower 4;

[0029] The cooling recovery system includes a primary tubular cooler 5 connected to the outlet of the separation tower 4, and the outlet of the primary tubular cooler 5 is connected to the primary gas-liquid separator 6, the secondary tubular cooler 7, and the secondary gas in sequence. The liquid separator 8 is connected; the outlet of the refrigerating liquid circulating pump 12 connected with the circulating refrigerating liquid 11 is in turn communicated with the secondary tube cooler 7 and the primary tube cooler 5;

[0030] The...

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Abstract

The invention provides a method and an apparatus for recovering oil substances in gas. The apparatus comprises a gas washing system, a cooling and recovery system and a tail oil recovery system. The gas washing system comprises a washing liquid pump and a separating column. The cooling and recovery system comprises a primary tube cooler, a primary gas-liquid separator, a secondary tube cooler, a secondary gas-liquid separator and a refrigerant fluid circulating pump. The tail oil recovery system comprises a tail oil recovery tank. According to the invention, through multistage separation, sectionalized recovery and cyclic refrigeration, the purpose of recovery of tar in raw gas is achieved; and the technical advantages of simple operation process, small equipment investment, low operation cost, a high recovery rate of tar, low consumption, energy conservation, environmental protection and the like are obtained.

Description

Technical field [0001] The invention relates to a method and device for recovering oil, in particular to a method and device for recovering oil substances in coal gas. Background technique [0002] The northern Shaanxi region of China is rich in coal resources. The estimated coal reserves are 271.4 billion tons and the proven reserves are 166 billion tons. It is the third largest coal base in my country. The coal in this area is rich in oil, and the oil content is as high as 8-10%, which is suitable for the production of coal tar. The current main coal tar production technology in northern Shaanxi is to carry out low-temperature dry distillation of raw coal through an internal heating square furnace, and then The tar in the gas is recovered. [0003] At present, most low-temperature carbonization furnaces still use conventional tar recovery methods for the recovery of tar in the gas from the furnace. That is, the gas is first sprayed with circulating water to cool down to condense...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G5/00C10G5/02C10G5/04C10G5/06C10K1/08C10K1/04C10K1/00
Inventor 王宁波李大鹏王明峰王汝成黄勇张月明刘巧霞霍朋举李晓宏王永娟
Owner 陕西延长石油(集团)有限责任公司碳氢高效利用技术研究中心
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