Oil-gas treatment system, oil-gas treatment method and mechanical apparatus

Patent metadata

Field	Value
Publication number	US-12257543-B2
Application number	US-202117368341-A
Country	US
Kind code	B2
Filing date	Jul 6, 2021
Priority date	Feb 9, 2021
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

An oil-gas treatment system, an oil-gas treatment method and a mechanical apparatus are disclosed. The oil-gas treatment system includes an oil-gas separation device and a first oil-gas delivery device. The oil-gas separation device is configured to perform an oil-gas separation treatment on oil-gas generated by an oil-gas generation device, the oil-gas separation device includes a lubrication oil box for containing lubrication oil; the first oil-gas delivery device is communicated with the lubrication oil box and is configured to convey at least a part of the oil-gas into the lubrication oil box; the lubrication oil box is configured to separate the oil-gas conveyed into the lubrication oil box, and a separated oil product is left in the lubrication oil box.

First claim

The invention claimed is:

1. An oil-gas treatment system comprising:
an oil-gas separation device configured to perform an oil-gas separation treatment on oil-gas generated by an oil-gas generation device, wherein the oil-gas separation device comprises:
a lubrication oil box for containing lubrication oil; and
a plurality of sub oil-gas separation devices cascade-connected in stages, each stage being configured to perform the oil-gas separation treatment on the oil-gas, and the lubrication oil box serving as one of the plurality of sub oil-gas separation devices;

a first oil-gas delivery device which is communicated with the lubrication oil box and is configured to convey at least a part of the oil-gas into the lubrication oil box, wherein the lubrication oil box is configured to separate the oil-gas conveyed into the lubrication oil box, and a separated oil product is left in the lubrication oil box,
a gas discharge pipe in communication with a last stage of the plurality of sub oil-gas separation devices and with a discharging environment;
an oil mass detector configured to detect an oil content in the gas discharge pipe;
a valve inside the gas discharge pipe;
an oil-gas return pipe between the last stage and at least another stage of the plurality of sub oil-gas separation devices; and
a controller configured to control the valve to be opened for discharging a gas product in the last stage of the plurality of sub oil-gas separation devices into the discharging environment when the oil content is no greater than a standard value, and to control the valve to close the gas discharge pipe to the discharging environment, when the oil content is greater than the standard value, so as to facilitate a return of the gas product in the last stage to the at least another stage of the plurality of sub oil-gas separation devices through the oil-gas return pipe for additional oil-gas separation treatment.

2. The oil-gas treatment system according to claim 1 , wherein
the first oil-gas delivery device is configured to spray the oil-gas onto a liquid surface of the lubrication oil in the lubrication oil box, or
the first oil-gas delivery device is configured to spray the oil-gas onto an inner wall of the lubrication oil box, or
a block structure is inside the lubrication oil box, and the first oil-gas delivery device is configured to spray the oil-gas onto the block structure.

3. The oil-gas treatment system according to claim 2 , wherein the first oil-gas delivery device has an outlet inside the lubrication oil box and spaced apart from the lubrication oil.

4. The oil-gas treatment system according to claim 3 , wherein the outlet of the first oil-gas delivery device has a wedge-shaped opening, the wedge-shaped opening is toward the liquid surface of the lubrication oil or the block structure or the inner wall of the lubrication oil box, and the oil-gas is sprayed into the lubrication oil box through the wedge-shaped opening.

5. The oil-gas treatment system according to claim 4 , further comprising:
a grid structure which is at the wedge-shaped opening, comprises a plurality of mesh holes, and is configured to allow the oil-gas to be sprayed from the first oil-gas delivery device onto the liquid surface of the lubrication oil or the block structure or the inner wall of the lubrication oil box through the plurality of mesh holes.

6. The oil-gas treatment system according to claim 1 , wherein the oil-gas is directly conveyed to the lubrication oil box from the oil-gas generation device through the first oil-gas delivery device.

7. The oil-gas treatment system according to claim 1 , further comprising:
an oil delivery device configured to convey an oil product, separated by sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box, into the lubrication oil box.

8. The oil-gas treatment system according to claim 1 , further comprising:
a bottom lubrication oil box at a bottom of the oil-gas generation device and configured to lubricate the oil-gas generation device; and
a bottom oil delivery device configured to convey an oil product, separated by sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box, into the bottom lubrication oil box.

9. The oil-gas treatment system according to claim 8 , wherein when the oil-gas generation device is in an operation state, an air pressure in the bottom lubrication oil box is greater than atmospheric pressure; when the oil-gas generation device is not in an operation state, the air pressure in the bottom lubrication oil box is basically equal to the atmospheric pressure;
the bottom oil delivery device is a one-way oil delivery device and comprises:
a bottom oil delivery pipe configured to collect and convey the oil product; and
a one-way valve which is in the bottom oil delivery pipe and is configured to allow the bottom oil delivery pipe to be one-way conductive when the oil-gas generation device is not in the operation state, to control the oil product to be conveyed to the bottom lubrication oil box from the sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box through the one-way valve and not to allow lubrication oil in the bottom lubrication oil box to be conveyed toward the sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box through the one-way valve.

10. The oil-gas treatment system according to claim 9 , wherein the sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box is (are) at a higher location in a direction of gravity than the bottom lubrication oil box.

11. The oil-gas treatment system according to claim 1 , wherein the sub oil-gas separation device(s) of the plurality of sub oil-gas separation devices except for the lubrication oil box comprise(s):
a condensation device configured to liquefying oil in the oil-gas.

12. The oil-gas treatment system according to claim 7 , wherein an outlet of the oil delivery device is connected with the lubrication oil box and is below a liquid surface of the lubrication oil in the lubrication oil box.

13. The oil-gas treatment system according to claim 1 , further comprising:
a later stage oil-gas separation device which is cascade-connected with the lubrication oil box, is behind the lubrication oil box in order, and is configured to perform a later stage oil-gas separation treatment on at least a part of gas product separated by the lubrication oil box.

14. The oil-gas treatment system according to claim 1 , further comprising:
a filter in the gas discharge pipe, wherein gas in the gas discharge pipe enter the discharging environment after being filtered by the filter.

15. The oil-gas treatment system according to claim 1 , wherein the lubrication oil box is used as the last stage of the plurality of sub oil-gas separation devices, and
the lubrication oil box comprises a filter which is configured to filter the gas product separated by the lubrication oil box, and filtered gas enter the discharging environment through the gas discharge pipe.

16. The oil-gas treatment system according to claim 11 , wherein:
the condensation device comprises a plurality of condensation tubes which are filled with condensate liquid and extend along a first direction;
the oil-gas passes across external walls of the plurality of condensation tubes;
an outline shape of the external wall of each of th

Assignees

• Yantai Jereh Petroleum Equipment & Technologies Co Ltd

Inventors

• Zhang Peng
• Zhang Rikui
• Wang Jianwei
• Ji Xiaolei
• Mao Zhuqing
• Lv Liang
• Li Xincheng

Classifications

• F05D2260/98

  Lubrication · CPC title

• F02C7/06 Primary

  Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D25/18; of machines or} engines in general F01M) · CPC title

• B01D53/002

  by condensation · CPC title

• B01D47/024

  by impinging the gas to be cleaned essentially in a perpendicular direction onto the liquid surface · CPC title

• B01D46/442

  by measuring the concentration of particles · CPC title