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Device and process for extracting oil in oil-containing solid waste and recovering extracting agent

An extraction agent and extraction technology, applied in solid solvent extraction, solid waste removal, solvent extraction, etc., can solve the problems of unstable test data and results, and no clear guiding significance for large-scale industrial trial production, etc., to achieve process parameters Stable and reliable, small footprint, safe process reaction effect

Pending Publication Date: 2021-10-26
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There have been domestic studies on the effect of oil-based drilling cuttings and waste oil-based drilling fluid on switch solvent treatment, mainly in the stage of chemical development and indoor beaker experiments. The test data and results are not very stable, and there is no clear definition for large-scale industrial trial production. guiding significance

Method used

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  • Device and process for extracting oil in oil-containing solid waste and recovering extracting agent
  • Device and process for extracting oil in oil-containing solid waste and recovering extracting agent
  • Device and process for extracting oil in oil-containing solid waste and recovering extracting agent

Examples

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Effect test

Embodiment 1

[0092] This example provides a device for oil extraction and extraction agent recovery from oily solid waste, the schematic diagram of which is shown in figure 1 As shown, the side view is as figure 2 shown, from figure 1 and figure 2 As can be seen, the device includes:

[0093] Closed feeding machine 1, stirring reaction kettle 2, solid-liquid separation centrifuge 5, first separator 8, second separator 10, third separator 11, fourth separator 13, water tank 25, medicine tank 27, Gas A bottle 28, gas B bottle 29;

[0094] The closed feeder 1 is used to transport the oil-containing solid waste into the stirred reactor 2, and the water tank 25 and the medicine tank 27 react with the stirring reaction via the water pump 24 and the medicine pump 26 respectively through pipelines. Kettle 2 connected;

[0095] The stirring reactor 2 is placed on the reactor supporting frame 3, and a load cell 31 is arranged under the stirring reactor 2; the solid-liquid separation centrifug...

Embodiment 2

[0104] This embodiment provides a process for oil extraction and extraction agent recovery from oily solid waste. The process is realized by using the device for oil extraction and extraction agent recovery from oily solid waste provided in Example 1. The process flow Figure such as image 3 shown, from image 3 It can be seen that the process includes the following specific steps:

[0105] (1) Stir and mix the oily solid waste, the initial state of lipophilic and hydrophobic extractant and water in the stirring reactor 2 according to a certain ratio, so as to extract the oil in the oily solid waste;

[0106] (2) carrying out solid-liquid separation in the solid-liquid separation centrifuge 5 with the mixed solution gained in step (1);

[0107] (3) inject the mixed solution gained after the solid-liquid separation in step (2) into the first separator 8, and feed gas A into the first separator 8 simultaneously to change the state of the extractant into hydrophilic and oleopho...

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Abstract

The invention provides a device and a process for extracting oil in oil-containing solid waste and recovering an extracting agent. In the device, a closed feeding machine is used for conveying the oil-containing solid waste into a stirring reaction kettle, and a water tank and a medicine tank are respectively connected with the stirring reaction kettle through a water adding pump and a dosing pump via pipelines; a liquid outlet of the stirring reaction kettle is connected with a solid-liquid separation centrifugal machine through a pipeline via a plunger pump; a liquid outlet of the solid-liquid separation centrifugal machine is connected with a first separator through a pipeline via a first liquid supply pump, and a gas bottle A is connected with the first separator through a pipeline; a liquid outlet of the first separator is connected with a second separator through a pipeline via a second liquid supply pump; a liquid outlet of the second separator is connected with a third separator through a pipeline via a third liquid supply pump, and a gas bottle B is connected with the third separator through a pipeline; and a liquid outlet of the third separator is connected with a fourth separator through a pipeline via a fourth liquid supply pump. The device has the advantages of small occupied area, full-automatic operation, and safe and environment-friendly process reaction process.

Description

technical field [0001] The invention relates to a device and a process for extracting oil from oily solid waste and recovering an extractant, and belongs to the technical field of oil and gas field drilling environment protection in the petroleum industry. Background technique [0002] Oily solid waste, such as oily sludge and oil-based drill cuttings, will be generated during oil and gas extraction and refining. Oily solid waste contains a large amount of petroleum hydrocarbons, which has been included in the category of national hazardous waste (National Hazardous Waste List, HW08). If it is not treated safely and effectively, it will inevitably pollute the environment. At present, extensive research has been carried out on oil-based drilling cuttings processing technology at home and abroad. Among them, solvent extraction technology has the advantages of good oil removal effect and solvent recycling, but most of the extraction agents currently used are relatively expensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B01D11/02B04B5/10
CPCB01D11/028B01D11/0292B04B5/10
Inventor 孙静文谢水祥许毓王奇印涛邵志国刘晓辉
Owner BC P INC CHINA NAT PETROLEUM CORP
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