CN109432827B - Weak cyclone type oil-gas-water three-phase separation device and flow dividing method - Google Patents
Weak cyclone type oil-gas-water three-phase separation device and flow dividing method Download PDFInfo
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- CN109432827B CN109432827B CN201811244548.5A CN201811244548A CN109432827B CN 109432827 B CN109432827 B CN 109432827B CN 201811244548 A CN201811244548 A CN 201811244548A CN 109432827 B CN109432827 B CN 109432827B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
A weak cyclone type oil-gas-water three-phase separation device and a flow dividing method adopt the following steps: firstly, the method comprises the following steps: the oil-gas-water three-phase mixture tangentially flows into the straight section of the outer cylinder through the inlet connecting pipe; and swirling along the annular gap between the straight section of the outer cylinder and the inner cylinder; II, secondly: the lighter gas phase can be discharged from an annular gas outlet which is not closed at the top, and the oil-water two-phase can be thrown to one side of the inner wall of the straight section of the outer cylinder and discharged from a water outlet along the inner wall of the conical section of the outer cylinder in the process of rotational flow; thirdly, the method comprises the following steps: the oil phase can be squeezed to the middle zone in the urceolus conic section, and then through the inner tube come-up, after the oil phase accumulated a height of settlement, will follow and lead the oil groove and discharge through the oil export to, realized oil gas water three-phase separation. The invention can not only accelerate the oil-water separation, but also greatly reduce the space requirement of the separator; in addition, the whole size of the separator and the using amount of the separating internal parts are reduced, the oil-water separation efficiency is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to a separation device, in particular to a weak cyclone type oil-gas-water three-phase separation device and a flow dividing method for an inlet of gravity type oil-gas-water three-phase separation equipment. Belongs to the field of petroleum engineering.
Background
At present, the gravity type oil-gas-water three-phase separator of the offshore oil platform mainly adopts the following inlet forms: semi-open tubular inlets, vane inlets and cyclonic inlets. The semi-open pipe type inlet is easy to fluctuate the oil field yield, and particularly has the defects of small space of a separator and insufficient processing capacity reserve under the working condition of increasing gas quantity; the vane type inlet is more suitable under the working condition of larger air quantity; however, under the working conditions of small air quantity and large oil-water quantity, the effect is limited; in addition, the cyclone type inlet has various forms, but has the disadvantages of too large pressure drop or narrow application range of oil-water ratio or incapability of three-phase separation.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and provide a weak cyclone type oil-gas-water three-phase separation device and a flow dividing method, which can not only accelerate oil-water separation, solve the problem of the length of a transition zone required for achieving stable oil-water separation, but also greatly reduce the space requirement of a separator; in addition, the whole size of the separator and the using amount of the separating internal parts are reduced, the oil-water separation efficiency is greatly improved, and the production cost is reduced.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a weak spiral-flow type oil gas water three-phase separator which characterized in that: the method comprises the following steps: straight section of outer cylinder
The outer cylinder conical section is arranged below the outer cylinder straight section, and the inner cylinder is sleeved in the outer cylinder straight section; the inner cylinder is smaller than the straight section of the outer cylinder, so that a set annular gap is formed between the straight section of the outer cylinder and the inner cylinder; the upper end of the inner cylinder is provided with an annular gas outlet, one side of the upper end of the inner cylinder is provided with a gap, the gap is provided with an oil guide groove for directly leading out the separated oil phase, and the outlet end of the oil guide groove is provided with an oil outlet; the lower end of the conical section of the outer cylinder is provided with a water outlet.
The inlet connecting pipe is tangentially arranged, and an inlet is formed in the input end of the inlet connecting pipe.
The outer cylinder straight section, the outer cylinder conical section and the inner cylinder are of open annular structures; can be used as a gas phase outlet under the condition of large gas quantity; and can be used as an overflow outlet of the oil phase under the condition of large oil quantity.
The inner cylinder is higher than the straight section of the outer cylinder.
A shunting method for realizing the weak cyclone type oil-gas-water three-phase separation device is characterized in that: the method comprises the following steps:
the first step is as follows: the oil-gas-water three-phase mixture tangentially flows into the straight section of the outer cylinder through the inlet connecting pipe; and swirling along the annular gap between the straight section of the outer cylinder and the inner cylinder;
the second step is that: the lighter gas phase can be discharged from an annular gas outlet which is not closed at the top, and the oil-water two-phase can be thrown to one side of the inner wall of the straight section of the outer cylinder and discharged from a water outlet along the inner wall of the conical section of the outer cylinder in the process of rotational flow;
the third step: the oil phase can be squeezed to the middle zone in the urceolus conic section, and then through the inner tube come-up, after the oil phase accumulated a height of settlement, will follow and lead the oil groove and discharge through the oil export to, realized oil gas water three-phase separation.
The invention has the beneficial effects that: by adopting the technical scheme, the oil-water separation can be accelerated, the problem of the length of the transition zone required by stable oil-water separation is solved, and the requirement of the separator on space is greatly reduced; in addition, the whole size of the separator and the using amount of the separating internal parts are reduced, the oil-water separation efficiency is greatly improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
The main reference numbers in the figures illustrate:
1. an inlet connection pipe; 2. an inlet; 3. an outer cylinder straight section; 4. an outer barrel conical section; 5. a water outlet; 6. an oil outlet; 7. an oil guide groove; 8. an annular gas outlet; 9. an inner cylinder.
Detailed Description
As shown in fig. 1, the present invention includes: the outer cylinder straight section 3 is arranged on the outer cylinder straight section 3 in a welding way
The lower outer cylinder conical section 4 and the inner cylinder 9 sleeved in the outer cylinder straight section 3 are arranged, wherein one side of the outer cylinder straight section 3 is provided with an inlet connecting pipe 1, and the output end of the inlet connecting pipe 1 is communicated with the outer cylinder straight section 3; the inner cylinder 9 is smaller than the outer cylinder straight section 3, so that a set annular gap exists between the outer cylinder straight section 3 and the inner cylinder 9; an annular gas outlet 8 is formed in the upper end of the inner cylinder 9, a notch is formed in one side of the upper end of the inner cylinder 9, and an oil guide groove 7 is installed on the notch in a welding mode and used for directly leading out the separated oil phase, so that interference on the separated oil phase due to subsequently entering liquid is avoided; the outlet end of the oil guide groove 7 is provided with an oil outlet 6; the lower end of the outer cylinder conical section 4 is provided with a water outlet 5.
The inlet connecting pipe 1 is tangentially arranged, and an inlet 2 is arranged at the input end of the inlet connecting pipe 1.
The outer cylinder straight section 3, the outer cylinder conical section 4 and the inner cylinder 9 are of open annular structures; under the condition of large gas quantity, the gas phase separator can be used as a gas phase outlet, and under the condition of large oil quantity, the gas phase separator can be used as an overflow outlet of the oil phase, so that the adaptability of the separator to different yield ratios is improved.
The inner cylinder 9 is higher than the outer cylinder straight section 3;
the gap is arc-shaped and matched with the section of the oil guide groove 7.
The invention adopts the following steps:
the first step is as follows: the oil-gas-water three-phase mixture tangentially flows into the outer cylinder straight section 3 through the inlet connecting pipe 1; and swirl along the annular gap between the outer cylinder straight section 3 and the inner cylinder 9;
the second step is that: because the three phases of oil, gas and water are carried out tangentially, the oil, gas and water can swirl along the gap between the straight section 3 of the outer barrel and the inner barrel 9, the lighter gas phase can be discharged from the annular gas outlet 8 of which the top is not closed because of density difference of the three phases of oil, gas and water, and the oil and water can be thrown to one side close to the inner wall of the straight section 3 of the outer barrel and discharged from the water outlet 5 along the inner wall of the conical section 4 of the outer barrel due to different centrifugal forces caused by density difference of oil and water in the swirling process;
the third step: the oil phase can be crowded middle zone in urceolus conic section 4, and then through inner tube 9 come-up, after the oil phase accumulated a height of settlement, will follow oil groove 7 and discharge through oil export 6 to, realized preliminary oil gas water three-phase separation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides a weak spiral-flow type oil gas water three-phase separator which characterized in that: the method comprises the following steps: the outer cylinder straight section, the outer cylinder conical section arranged below the outer cylinder straight section and the inner cylinder sleeved in the outer cylinder straight section, wherein one side of the outer cylinder straight section is provided with an inlet connecting pipe, and the output end of the inlet connecting pipe is communicated with the outer cylinder straight section; the inner cylinder is smaller than the straight section of the outer cylinder, so that a set annular gap is formed between the straight section of the outer cylinder and the inner cylinder; the upper end of the inner cylinder is provided with an annular gas outlet, one side of the upper end of the inner cylinder is provided with a gap, the gap is provided with an oil guide groove for directly leading out the separated oil phase, and the outlet end of the oil guide groove is provided with an oil outlet; the lower end of the conical section of the outer cylinder is provided with a water outlet;
the inlet connecting pipe is tangentially arranged, and an inlet is arranged at the input end of the inlet connecting pipe;
the outer cylinder straight section, the outer cylinder conical section and the inner cylinder are of open annular structures; can be used as a gas phase outlet under the condition of large gas quantity; and can be used as an overflow outlet of the oil phase under the condition of large oil quantity;
the inner cylinder is higher than the straight section of the outer cylinder.
2. A flow dividing method for realizing the weak cyclone type oil-gas-water three-phase separation device of claim 1, which is characterized in that: the method comprises the following steps:
the first step is as follows: the oil-gas-water three-phase mixture tangentially flows into the straight section of the outer cylinder through the inlet connecting pipe; and swirling along the annular gap between the straight section of the outer cylinder and the inner cylinder;
the second step is that: the lighter gas phase can be discharged from an annular gas outlet which is not closed at the top, and the oil-water two-phase can be thrown to one side of the inner wall of the straight section of the outer cylinder and discharged from a water outlet along the inner wall of the conical section of the outer cylinder in the process of rotational flow;
the third step: the oil phase can be squeezed to the middle zone in the urceolus conic section, and then through the inner tube come-up, after the oil phase accumulated a height of settlement, will follow and lead the oil groove and discharge through the oil export to, realized oil gas water three-phase separation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811244548.5A CN109432827B (en) | 2018-10-24 | 2018-10-24 | Weak cyclone type oil-gas-water three-phase separation device and flow dividing method |
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| CN201811244548.5A CN109432827B (en) | 2018-10-24 | 2018-10-24 | Weak cyclone type oil-gas-water three-phase separation device and flow dividing method |
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| CN109432827B true CN109432827B (en) | 2021-01-15 |
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| CN110251998B (en) * | 2019-06-21 | 2021-02-09 | 燕山大学 | Split-flow filtering type gas-liquid-solid three-phase cyclone separation device |
Citations (6)
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|---|---|---|---|---|
| CN1805797A (en) * | 2003-06-16 | 2006-07-19 | 株式会社分离 | Cyclone-type separator for separating foreign matters by utilizing a centrifugal force |
| CN101664720A (en) * | 2009-09-21 | 2010-03-10 | 宁波威瑞泰默赛多相流仪器设备有限公司 | Spiral-flow type gas, oil and water separator |
| CN102438758A (en) * | 2009-04-20 | 2012-05-02 | 索尔博水技术公司 | Apparatus and method for separation of phases in a multiphase flow |
| CN102886316A (en) * | 2012-09-18 | 2013-01-23 | 东北石油大学 | Hydrocyclone used for three-phase medium separation |
| EP3275523A1 (en) * | 2015-03-26 | 2018-01-31 | Zeon Corporation | Method for separating polymer solution and water |
| CN207941243U (en) * | 2017-12-28 | 2018-10-09 | 大化集团有限责任公司 | One kind is for glycerine continuous separation device in biodiesel/fatty acid methyl ester production |
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2018
- 2018-10-24 CN CN201811244548.5A patent/CN109432827B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805797A (en) * | 2003-06-16 | 2006-07-19 | 株式会社分离 | Cyclone-type separator for separating foreign matters by utilizing a centrifugal force |
| CN102438758A (en) * | 2009-04-20 | 2012-05-02 | 索尔博水技术公司 | Apparatus and method for separation of phases in a multiphase flow |
| CN101664720A (en) * | 2009-09-21 | 2010-03-10 | 宁波威瑞泰默赛多相流仪器设备有限公司 | Spiral-flow type gas, oil and water separator |
| CN102886316A (en) * | 2012-09-18 | 2013-01-23 | 东北石油大学 | Hydrocyclone used for three-phase medium separation |
| EP3275523A1 (en) * | 2015-03-26 | 2018-01-31 | Zeon Corporation | Method for separating polymer solution and water |
| CN207941243U (en) * | 2017-12-28 | 2018-10-09 | 大化集团有限责任公司 | One kind is for glycerine continuous separation device in biodiesel/fatty acid methyl ester production |
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