CN215137128U

CN215137128U - Device for separating oil from gas water in oil containing gas water

Info

Publication number: CN215137128U
Application number: CN202022686220.8U
Authority: CN
Inventors: 耿广旺; 宋文生; 孟祥清; 高鹏飞; 邹艳霞
Original assignee: Liaoning Datang Power Fuxin Coal To Gas Co ltd
Current assignee: Liaoning Datang Power Fuxin Coal To Gas Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-12-14
Anticipated expiration: 2030-11-19

Abstract

The utility model provides a device for separating oil and gas water in oil that will contain gas water, it includes: an oil sump; a partition plate dividing an inner space of the oil tank into a separation chamber and an oil storage chamber; the vertical distance from the feed port to the bottom end of the oil tank is h1, and the vertical distance from the bottom of the feed pipe to the bottom end of the oil tank is h 2; a first densitometer at a vertical distance h3 from the bottom end of the oil sump; a second densitometer at a vertical distance h4 from the bottom end of the oil sump; a gas water discharge pipeline and a gas water discharge valve arranged on the gas water discharge pipeline; the vertical distance from the gas water discharge pipeline to the bottom end of the oil groove is h 5; the oil collecting pipe is connected with the oil collecting hole in the upper part of the partition plate, and the vertical distance from the position of the oil collecting hole to the bottom end of the oil groove is h 6; an oil outlet provided at a lower portion of the oil reservoir; wherein h1 & gth 2 & gth 3 & gth 4 & gth 5, and h6 & gth 2. The device changes discontinuous oil collection into continuous oil collection and automatic drainage, and can ensure the stability of timely oil collection and oil product quality.

Description

Device for separating oil from gas water in oil containing gas water

Technical Field

The utility model belongs to the chemical industry equipment field. In particular, the present invention relates to a device for separating oil and gas water in oil containing gas water.

Background

The resources of China are basically characterized by rich coal, lean oil and little gas, wherein the proportion of lignite and long flame coal is the largest, and the proportion is about more than 60%. The crushed coal pressure gasification has wider range of coal types, and can be gasified from low-rank lignite to high-rank bituminous coal and anthracite. The inferior lignite and long flame coal are more reasonable and cheap coal for gasification. The low-rank coal is converted into clean gas fuel, and the clean gas fuel has strong competitiveness on coal-based natural gas, coal-based methanol, coal-based synthetic ammonia and coal indirect liquefaction process routes.

The process of crushed coal pressure gasification produces a large amount of highly polluted waste water, which usually contains more oil. In order to recover these oils, it is necessary to separate the oil-containing gas water obtained by pressure gasification of crushed coal by passing it through an oil separator. The oil after passing through the oil-water separator still can not avoid containing gas water. This oil containing gas water will generally re-enter the oil reservoir. In the oil storage tank, the oil containing the gas water is settled by gravity to further separate the gas water and the oil, and the separated oil product is sent to a tank area to be sold as a product to the outside after being tested to be qualified. The oil storage tank for separating gas water from oil in oil containing gas water at present has a common separation effect. The water content in the oil entering the oil storage tank is large, manual drainage is carried out after the oil must be settled, time and labor are wasted, the quality of the oil is unstable, and the production is severely restricted.

The currently adopted gas-water separation process flow is as follows: the gas water containing oil obtained by pressure gasification of crushed coal is decompressed and flashed by an expander at a certain temperature and pressure, the physical soluble gas in the gas water is flashed out, and the gas water is sent to an incinerator or a torch for incineration by a blower after cooling and gas-liquid separation. And the expanded gas water containing the oil enters an oil-water separator to obtain the oil still containing the gas water. The oil containing gas water is then fed to an oil reservoir. In the oil reservoir, the oil containing gas water is further separated by gravity into an oil layer and a gas water layer. The coal gas water layer is discharged manually, and finally the oil layer flows out by gravity. And (5) determining the water content in the oil, and sending the qualified oil to a tank area.

The prior art has the following problems:

1. currently, a device for separating oil and gas from gas water-containing oil (gas water accounts for about 10 wt%) from an oil-water separator (i.e., an oil storage tank) requires manual drainage.

2. The manual drainage is frequent, and the analysis frequency is high. As the content of the coal gas water (coal gas water accounts for about 10 weight percent) in the oil containing the coal gas water entering the oil storage tank exceeds the standard, the requirement of delivery cannot be met, manual drainage is frequently needed, and the oil can be delivered after being analyzed to be qualified, so that a lot of workload is additionally increased.

3. The manual drainage is not easy to control, and the system load is increased. When manual drainage is carried out, the oil with higher purity is often discharged, and the oil enters the oil separator again for separation, so that the system load is increased, the separation effect of the separator is further poor, and vicious circle is generated.

4. Frequent discharge easily pollutes the field ground environment and has fire hazard. The manual work frequently discharges and discharge funnel easily appears the jam phenomenon, often appears discharging the oil to the condition on ground. Therefore, the workload of on-site sanitary cleaning is increased to a great extent, and once the cleaning is not in time, great fire hazard exists.

5. The operation process of separating and collecting the oil from the oil containing the gas water is 'oil collection, sedimentation, water discharge, analysis and outward delivery', the time consumption is long, and the untimely oil collection can cause the high oil content in the gas water discharged from the device and influence the production of the next working section.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device for separating oil and gas water in oil containing gas water. The device changes discontinuous oil collection into continuous oil collection and automatic drainage. The method has the advantages that the method can reduce the workload of operators and analysts to the maximum extent and protect the environment of a site to the maximum extent while ensuring the stable quality of the oil and oil products in time, thereby ensuring the stable and efficient operation of the production process.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a device that is arranged in separating oil and gas water in the oil that contains gas water, it includes:

the oil tank comprises a first cylinder body and a second cylinder body, wherein the first cylinder body and the second cylinder body are communicated and connected with each other through fluid from top to bottom and are gradually narrowed from top to bottom;

a partition plate that divides an internal space of the oil tank into a separation chamber and an oil reservoir chamber; the joints of the partition board and the peripheral wall of the first cylinder, the peripheral wall of the second cylinder and the bottom wall are impermeable;

a feed pipe in fluid communication with a feed port for gas water-containing oil disposed at an upper portion of the separation chamber; wherein the vertical distance from the feed inlet to the bottom end of the oil tank is h1, and the vertical distance from the bottom of the feed pipe to the bottom end of the oil tank is h 2;

a first densitometer disposed inside the separation chamber, wherein the first densitometer is located a vertical distance h3 from the bottom end of the oil sump;

a second densitometer disposed inside the separation chamber, wherein the second densitometer is located a vertical distance h4 from the bottom end of the oil sump;

a gas water discharge pipeline arranged at the lower part of the separation chamber, wherein a gas water discharge valve is arranged on the gas water discharge pipeline; the gas water discharge valve, the first densimeter and the second densimeter are in automatic control connection through an automatic control system; the vertical distance from the position of the gas water discharge pipeline on the oil tank to the bottom end of the oil tank is h 5;

an oil collecting pipe which is positioned in the oil storage chamber and is in fluid through connection with an oil collecting hole arranged at the upper part of the partition plate, wherein the vertical distance from the position of the oil collecting hole to the bottom end of the oil tank is h6, and the vertical distance from the top end of the partition plate to the bottom end of the oil tank is h 7;

an oil outlet provided at a lower portion of the oil reservoir;

wherein h1 & gth 2 & gth 3 & gth 4 & gth 5, and h6 & gth 2.

Preferably, in the device for separating gas from oil in gas-containing oil of the present invention, the first cylinder is cylindrical, and the second cylinder is conical.

Preferably, in the device for separating oil from gas water in oil containing gas water according to the present invention, the device further includes a first sampling observation port and a second sampling observation port disposed on the separation chamber cylinder; the vertical distance from the position of the first sampling observation port to the bottom end of the oil tank is h8, and the vertical distance from the position of the second sampling observation port to the bottom end of the oil tank is h 9; wherein h2 < h8 < h6, and h9 ═ h 6.

A device for separating oil and gas water in oil that contains gas water in, set up two sample viewing apertures on the barrel wall of separation chamber, be convenient for inspect whether the water oil separating condition is normal. Through the first sampling sight port, it can be observed whether the oil layer has reached the position of the first sampling sight port. Through the second sampling observation port, whether the oil layer has reached the position of the oil receiving hole can be observed.

Preferably, in the device for separating gas from oil in gas-containing oil of the present invention, the device further comprises an emergency overflow port disposed on the separation chamber cylinder; the vertical distance from the position of the emergency overflow port to the bottom end of the oil groove is h10, wherein h10 is h 7.

In the device for separating oil and gas water in oil containing gas water, the emergency overflow port is mainly used for preventing the oil containing gas water from overflowing the clapboard and flowing to the oil storage chamber.

Preferably, in the device for separating gas from oil in gas-containing oil of the present invention, the device further comprises a drain port disposed at the bottom end of the second cylinder.

Preferably, in the device for separating gas and oil in gas-water-containing oil of the present invention, the device further includes an upper cover for closing the first cylinder.

Preferably, in the device for separating gas from oil in gas-containing oil of the present invention, the partition plate is parallel to the central axis of the first cylinder.

Preferably, in the apparatus for separating gas from oil in gas-water-containing oil according to the present invention, the separation chamber has a space larger than that of the oil reservoir.

In the device for separating oil and gas water in oil containing gas water, the first densimeter and the second densimeter can select an inserted resonant tuning fork densimeter. When the first densimeter detects that the density of the gas water is high, the remote control gas water discharging valve is opened, and the gas water is discharged into the sewage tank. When the second densimeter detects that the density of the oil is high, the remote control gas water discharge valve is closed, and the oil is prevented from being discharged.

In a specific embodiment of the present invention, a baffle is vertically welded in the oil tank to divide the interior of the storage tank into two chambers, wherein the left chamber is a separation chamber and the right chamber is an oil storage chamber. The bottom of the left chamber is provided with a gas water discharge pipeline and a gas water discharge valve controlled by remote control. The upper part of the clapboard is provided with an oil collecting pipe and an oil collecting hole. After entering the left chamber, the oil containing gas water is divided into two layers under the action of gravity. The gas water of lower floor's gas water accessible densimeter control remote control gas water discharge valve discharges into the bilge pit, and the purer oil of upper strata flows into the right room through receiving the oil pipe on the baffle, opens the pump after certain liquid level and send outward.

The utility model discloses following beneficial effect has:

1. the operation mode of the device of the utility model is a continuous automatic control mode, and the stability of the oil receiving and the oil and gas water indexes can be ensured.

2. Adopt the utility model discloses a device can alleviate operative employee's work load, improves work efficiency.

3. Adopt the utility model discloses a pollution to the ground environment in the emission process that can significantly reduce of device reduces the conflagration risk.

4. Adopt the utility model discloses a device has reduced oil separator's load, has improved the oil-water separation effect, has increased oily output, has reduced the oil content of export gas aquatic, is favorable to the production of next workshop section.

5. Adopt the utility model discloses a device, oil analysis mode can be changed into the selective examination analysis by the analysis before sending out at every turn, reduces the analysis frequency, alleviates analyst's work load.

6. Adopt the utility model discloses a device can realize that oil product output improves, the water content reduces, the index is stable. The utility model discloses a device has solved with less investment and has received untimely and this outstanding problem of product oil quality unstability of oil, plays greatly reduced field operation work load simultaneously, improves production efficiency and environmental protection's effect.

Drawings

Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of an apparatus for separating oil and gas water from gas water in an oil containing gas water according to an embodiment of the present invention;

wherein, the reference numbers:

1-a first cylinder; 2-a second cylinder; 3-a separator; 4-a feed pipe; 5-a feed inlet; 6-a first densitometer; 7-a second densitometer; 8-gas water discharge line; 9-gas water discharge valve; 10-oil collecting pipe; 11-an oil receiving hole; 12-a first sampling viewport; 13-a second sampling viewport; 14-emergency overflow port; 15-clean discharge port; 16, covering the upper cover; 17-oil outlet.

Detailed Description

Referring now to the drawings, a schematic of the disclosed apparatus for separating oil from gas water in gas water-containing oil will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the disclosure of the present invention. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all drawings or examples.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or intervening elements may also be present. Certain directional terms used hereinafter to describe the drawings, such as "lateral," "vertical," "upper," "lower," "inner," "outer," "above," "below," and other directional terms, will be understood to have their ordinary meaning and refer to those directions as they normally refer to the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art. The terms "first," "second," and the like, as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1, the present invention provides an apparatus for separating oil and gas water in oil containing gas water, comprising:

the oil tank comprises a first cylinder body 1 and a second cylinder body 2, wherein the first cylinder body 1 and the second cylinder body are communicated and connected through fluid from top to bottom;

a partition plate 3 dividing an inner space of the oil tank into a separation chamber and an oil storage chamber; the joints of the partition plate 3, the peripheral wall of the first cylinder 1, the peripheral wall of the second cylinder 2 and the bottom wall are impermeable to liquid;

a feed pipe 4 in fluid communication with a feed port 5 for gas water-containing oil provided at the upper part of the separation chamber; wherein, the vertical distance from the feed port 5 to the bottom end of the oil groove is h1, and the vertical distance from the bottom of the feed pipe 4 to the bottom end of the oil groove is h 2;

a first densitometer 6 disposed inside the separation chamber, wherein the first densitometer 6 is located a vertical distance h3 from the bottom end of the oil sump;

a second densitometer 7 disposed inside the separation chamber, wherein the second densitometer 7 is located a vertical distance h4 from the bottom end of the oil sump;

a gas water discharge pipeline 8 arranged at the lower part of the separation chamber, wherein a gas water discharge valve 9 is arranged on the gas water discharge pipeline 8; the gas water discharge valve 9, the first densimeter 6 and the second densimeter 7 are in automatic control connection through an automatic control system; the vertical distance from the position of the gas water discharge pipeline 8 on the oil tank to the bottom end of the oil tank is h 5;

an oil collecting pipe 10 which is positioned in the oil storage chamber and is in fluid through connection with an oil collecting hole 11 arranged at the upper part of the partition plate, wherein the vertical distance from the position of the oil collecting hole 11 to the bottom end of the oil tank is h6, and the vertical distance from the top end of the partition plate 3 to the bottom end of the oil tank is h 7;

an oil outlet 17 provided at the lower part of the oil storage chamber;

wherein h1 & gth 2 & gth 3 & gth 4 & gth 5, and h6 & gth 2.

In the device for separating gas and oil from oil in gas-containing water of the present invention, the first cylinder 1 is preferably cylindrical, and the second cylinder 2 is preferably conical.

In the device for separating oil from gas water in oil containing gas water of the present invention, preferably, the device further comprises a first sampling observation port 12 and a second sampling observation port 13 which are arranged on the separation chamber cylinder; the vertical distance from the position of the first sampling observation port 12 to the bottom end of the oil sump is h8, and the vertical distance from the position of the second sampling observation port 13 to the bottom end of the oil sump is h 9; wherein h2 < h8 < h6, and h9 ═ h 6.

The utility model discloses an in the device that is arranged in with the oil and the coal gas water separation of the oil that contains the gas water, set up two sample viewing apertures on the barrel wall of separation chamber, be convenient for inspect whether the oil-water separation condition is normal. Through the first sampling sight port 12, it can be observed whether the oil layer has reached the position of the first sampling sight port 12. Through the second sampling sight port 13, it can be observed whether the oil layer has reached the position of the oil receiving hole 11.

In the device for separating gas from oil in oil containing gas water of the present invention, preferably, the device further comprises an emergency overflow port 14 provided on the separation chamber cylinder; the emergency overflow port 14 is located at a vertical distance h10 from the bottom end of the tank, where h10 is h 7.

In the device for separating gas and oil in oil containing gas water of the present invention, preferably, the device further includes a drain port 15 provided at the bottom end of the second cylinder.

In the device for separating gas and oil in gas-water-containing oil of the present invention, preferably, the device further includes an upper cover 16 for making the first cylinder airtight.

In the device for separating gas and oil in gas-water-containing oil of the present invention, preferably, the partition plate is parallel to the central axis of the first cylinder.

In the apparatus for separating gas from oil in gas-water-containing oil of the present invention, it is preferable that the space of the separation chamber is larger than the space of the oil reservoir.

In the utility model discloses a device for inciting somebody to action oil and gas water separation in the oil that contains the gas water, first densimeter 6 and second densimeter 7 optional bayonet resonance tuning fork densimeter. When the first densimeter 6 detects that the density of the gas water is high, the remote control gas water discharge valve 9 is opened, and the gas water is discharged into the sewage tank. When the second densimeter 7 detects that the density of the oil is high, the remote gas water discharge valve 9 is closed to prevent the oil from being discharged.

The following gas-water separation device (4 series) for a 40 billion cubic meters/year coal-to-natural gas project of a certain domestic company has the following calculation benefits:

the total external gas water supply of 4 series of gas water separation devices is about 700t/h, the oil content in the outlet gas water is designed to be 0.065 wt%, the oil content in the outlet gas water after transformation can be reduced to be below 0.02 wt%, the oil yield can be increased by 0.63t/h, and the oil yield can be increased by 5040 t/year according to 8000 hours all year round. The oil price is calculated according to 2000 yuan/t, and the benefit can be increased by more than 500 ten thousand yuan.

The above description is only illustrative of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention are to be considered within the scope of the invention.

Claims

1. An apparatus for separating oil and gas water in gas water-containing oil, comprising:

an oil outlet provided at a lower portion of the oil reservoir;

wherein h1 & gth 2 & gth 3 & gth 4 & gth 5, and h6 & gth 2.

2. The device for separating oil and gas water in gas water-containing oil according to claim 1, wherein the first cylinder is cylindrical and the second cylinder is conical.

3. The device for separating oil and gas water from gas water in gas water containing oil of claim 1, wherein the device further comprises a first sampling sight port and a second sampling sight port disposed on the separation chamber cylinder; the vertical distance from the position of the first sampling observation port to the bottom end of the oil tank is h8, and the vertical distance from the position of the second sampling observation port to the bottom end of the oil tank is h 9; wherein h2 < h8 < h6, and h9 ═ h 6.

4. The device for separating oil and gas water from gas water in oil containing gas water of claim 1, wherein the device further comprises an emergency overflow port provided on the separation chamber cylinder; the vertical distance from the position of the emergency overflow port to the bottom end of the oil groove is h10, wherein h10 is h 7.

5. The device for separating oil and gas water in gas water-containing oil according to claim 1, wherein the device further comprises a drain port provided at a bottom end of the second cylinder.

6. The device for separating oil and gas water in gas water-containing oil according to claim 1, wherein the device further comprises an upper cover closing the first cylinder.

7. The device for separating oil and gas water in gas water-containing oil according to claim 1, wherein the partition plate is parallel to a central axis of the first cylinder.

8. The apparatus for separating gas-water from oil in gas-water containing oil according to claim 1, wherein a space of the separation chamber is larger than a space of the oil reservoir.