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Method and system for purifying dust-containing and water-containing high-temperature oil gas to recover oil

A technology for recovering oil and high temperature, which is applied in the fields of recovering oil from water-containing high-temperature oil and gas, and purifying dust. It can solve the problems of high solid content in recovered oil, incomplete separation of oil and water, and easy clogging of filters.

Active Publication Date: 2019-03-22
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the solid content of the recovered oil is high, and the oil-water separation is not complete
[0004] The filter in the prior art is easy to clog, the recovered oil obtained by purifying and recovering dusty and watery high temperature oil gas has a high solid content, and the problem of incomplete oil-water separation limits the industrial application of dusty and watery high temperature oil gas purification and recovery

Method used

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  • Method and system for purifying dust-containing and water-containing high-temperature oil gas to recover oil
  • Method and system for purifying dust-containing and water-containing high-temperature oil gas to recover oil

Examples

Experimental program
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Effect test

Embodiment 1

[0074] (1) Pass high-temperature oil and gas (from the coal dry distillation unit) into the quench tower, and spray FC-98 aqueous solution containing 0.05% mass concentration to it, and obtain a 100°C oil, water, and solid mixture after condensation, non-condensable gas Through the upper outlet on the top of the fiber liquid film contactor, it is passed into the washing tower, and after washing and cooling, the deoiled non-condensable gas (oil content 0.5mg / Nm 3 );

[0075] (2) The mixed liquid acts through the fiber liquid film contactor, and the fiber filaments in the mass transfer space cylinder of the fiber liquid film contactor are 316 series stainless steel wires. The length-to-diameter ratio of the mass transfer space of the cylinder is 20:1, the filling ratio of the cylinder is 5%, and the volume of the fiber liquid film contactor is 2L. Mix the liquid according to the feed rate of 1kg / h and the liquid hourly space velocity of 10h -1 Inject the contactor. The contac...

Embodiment 2

[0078](1) Pass high-temperature oil and gas (from the coal gasification unit) into the quench tower, and spray Zonyl FSN aqueous solution containing 0.05% mass concentration to it, and obtain a 110°C oil, water, and solid mixture after condensation, and the non-condensable gas is passed through The upper outlet at the top of the fiber liquid film contactor is passed into the washing tower, and the deoiled non-condensable gas (oil content 0.8mg / Nm 3 );

[0079] (2) The mixed liquid acts through the fiber liquid film contactor, and the fiber filaments in the mass transfer space cylinder of the fiber liquid film contactor are 316 series stainless steel wires. The length-to-diameter ratio of the mass transfer space of the cylinder is 20:1, the filling ratio of the cylinder is 5%, and the volume of the fiber liquid film contactor is 2L. Mix the liquid according to the feed rate of 1kg / h and the liquid hourly space velocity of 10h -1 Inject the contactor. The contact temperature ...

Embodiment 3

[0082] (1) Pass high-temperature oil and gas (from the pyrolysis biomass device) into the quench tower, and spray FC-006 aqueous solution with a mass concentration of 0.05% into it, and obtain a 120°C oil, water, and solid mixture after condensation, non-condensable gas Through the upper outlet on the top of the fiber liquid film contactor, it is passed into the washing tower, and after being washed with water and cooled, the deoiled non-condensable gas (oil content 0.6mg / Nm 3 );

[0083] (2) The mixed liquid acts on the fiber liquid film contactor, and the fiber filaments in the mass transfer space cylinder of the fiber liquid film contactor are glass fiber filaments. The length-to-diameter ratio of the mass transfer space of the cylinder is 30:1, the filling rate of the cylinder is 7%, and the volume of the fiber liquid film contactor is 2L. The mixed solution is 2.1kg / h according to the feeding amount, and the liquid hourly space velocity is 15h -1 Inject the contactor. ...

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Abstract

The invention relates to the field of dust-containing and water-containing high-temperature oil gas purification, and discloses a method and a system for purifying dust-containing and water-containinghigh-temperature oil gas to recover oil. The method for purifying the dust-containing and water-containing high-temperature oil gas to recover the oil comprises the following steps: (1) surfactant-containing water is enabled to be in contact with the dust-containing and water-containing high-temperature oil gas to carry out condensation, so that noncondensable gas and a mixture containing oil, water and solid are obtained; (2) the mixture obtained in step (1) is introduced into a fiber liquid film contactor to carry out mutual contact, so that a mixed phase is obtained, wherein the fiber liquid film contactor comprises a cylinder, and the cylinder is loaded with fibers; and (3) the obtained mixed phase is subjected to standing for sedimentation in an oil-water separation tank, so that anoil phase and a water phase containing the surfactant and impurities are obtained. The method disclosed by the invention can be adopted to effectively remove solid impurities and water in the dust-containing and water-containing high-temperature oil gas, obtaining recovered oil with solid content less than 0.001 percent and water content less than 0.1 percent, and the purified recovered oil can bedirectly refined and processed.

Description

technical field [0001] The invention relates to the field of purification of high-temperature oil and gas containing dust and water, in particular to a method and a system for purifying high-temperature oil and gas containing dust and water and recovering oil. Background technique [0002] In recent years, under the inevitable trend of green and sustainable development, resource utilization of coal, biomass, waste polymer materials and oily sludge to prepare recycled oil (recovered oil) has become an important way to reduce oil dependence. However, due to the wide range of raw materials used in this technology and the complex composition, a large amount of solid dust and water vapor will be generated when heated at high temperature. These dust and water enter the cooling device together with the generated high-temperature oil and gas, and are difficult to remove when mixed into the oil phase. The reclaimed oil that causes preparation can't be utilized, forms secondary pollut...

Claims

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Application Information

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IPC IPC(8): C10K1/04B01D17/04B01D36/00
CPCB01D17/047B01D36/006B01D36/008C10K1/001C10K1/002
Inventor 佘喜春黄华姚飞韩勇康之军沈鹏飞谢琼玉
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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