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Oil gas recovery method

A recovery method, oil and gas technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., to achieve the effect of broad application prospects, good absorption effect, and good effect

Active Publication Date: 2021-01-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, with these methods in the prior art, the emission concentration of oil and gas after treatment can only achieve ≤25g / m 3 The non-methane total hydrocarbon value, with the increasingly stringent environmental protection requirements, some regions and industries have required the non-methane total hydrocarbon emission value of the oil and gas recovery system to reach ≤120mg / m 3 , and even higher levels of emission requirements

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0135] This embodiment provides a method for recovering oil and gas, and the device for recovering oil and gas used in the method is as follows: figure 1 As shown, the device includes an absorption unit, a condensation unit and an adsorption-desorption unit.

[0136] The absorption unit includes an absorption tower 101; the upper side of the absorption tower 101 is provided with a first absorbent inlet; the lower side of the absorption tower 101 is provided with a feed gas inlet; the absorption tower 101 is provided with a bottom absorbent outlet and the gas outlet after absorption at the top; the middle part of the absorption tower 101 is also provided with a second absorbent inlet; the bottom absorbent outlet is connected with the second absorbent inlet; between the bottom outlet and the second absorbent inlet is provided with A flow splitter 102; a first heat exchange device 103 is provided between the flow splitter 102 and the second absorbent inlet; the top absorption gas...

Embodiment 2

[0146] This embodiment provides a method for recovering oil and gas, and the device for recovering oil and gas used in the method is as follows: figure 2 As shown, the device includes an absorption unit, a condensation unit and an adsorption-desorption unit.

[0147] The absorption unit includes an absorption tower 101; the upper side of the absorption tower 101 is provided with a first absorbent inlet; the lower side of the absorption tower 101 is provided with a feed gas inlet; the absorption tower 101 is provided with a bottom absorbent outlet and the gas outlet after absorption at the top; the middle part of the absorption tower 101 is also provided with a second absorbent inlet; the bottom absorbent outlet is connected with the second absorbent inlet; between the bottom outlet and the second absorbent inlet is provided with A flow splitter 102; a first heat exchange device 103 is provided between the flow splitter 102 and the second absorbent inlet; the top absorption ga...

Embodiment 3

[0158] This embodiment provides a method for recovering oil and gas, and the device for recovering oil and gas used in the method includes an absorption unit, a condensation unit and an absorption and desorption unit.

[0159] The absorption unit includes an absorption tower; the upper side of the absorption tower is provided with a first absorbent inlet; the lower side of the absorption tower is provided with a feed gas inlet; the absorption tower is provided with a bottom absorbent outlet and a top absorbent gas outlet; the middle part of the absorption tower is also provided with a second absorbent inlet; the bottom absorbent outlet is connected to the second absorbent inlet; a splitter is arranged between the bottom outlet and the second absorbent inlet; the A first heat exchange device is arranged between the splitter and the second absorbent inlet; the top absorption gas outlet is connected with a condensing unit.

[0160] The absorption unit also includes a desorption t...

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Abstract

The invention provides an oil gas recovery method which adopts any one or a combination of at least two of branched paraffin, straight-chain paraffin, olefin, aromatic hydrocarbon and cycloparaffin with the carbon atom number of 6-16 as an absorbent, and compared with the existing absorbent, the oil gas recovery method has the advantages of wide source, low cost and better absorption effect. By combining the steps of condensation and adsorption, oil gas recovery can be well achieved, resource utilization is achieved, purified gas reaches the emission standard, and the environmental pressure isrelieved.

Description

technical field [0001] The invention relates to the technical field of oil and gas treatment, in particular to an oil and gas recovery method. Background technique [0002] Oil and gas escape into the atmosphere, causing evaporation loss of oil products, which not only causes waste of resources, but also brings potential safety hazards and environmental hazards. In addition, oil and gas are one of VOCs gases, and VOCs are the precursors of ozone, so the discharge of oil and gas will cause serious environmental pollution. The unsaturated hydrocarbons and aromatic hydrocarbons in oil and gas can cause the human body to suffer from leukemia and other symptoms of hematopoietic system damage. [0003] At present, the methods commonly used in oil and gas recovery technology are: "adsorption + absorption", "condensation + adsorption", "condensation + membrane separation", "absorption + membrane separation + adsorption" and so on. [0004] CN107051125A discloses an oil and gas rec...

Claims

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Application Information

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IPC IPC(8): B01D53/14B01D53/00B01D53/04
CPCB01D53/1487B01D53/002B01D53/04Y02A50/20
Inventor 何林李鑫钢张美艳王海清隋红从海峰廉景燕
Owner TIANJIN UNIV
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