Efficient separation device for saturated water of coal bed gas ground well
By using graphene coatings and automatic water discharge devices in coalbed methane surface wells, combined with irregular separation baffles and float level gauges, the problem of condensate accumulation in the coalbed methane gathering and transportation system has been solved, achieving efficient separation and stable operation, and adapting to complex terrain and low-temperature environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-03-24
AI Technical Summary
In coalbed methane surface gathering and transportation systems, the accumulation of condensate in pipelines leads to increased system pressure and reduced gas transportation efficiency. In particular, it can easily cause blockage problems in complex terrain and low temperature conditions. Existing water-gas separation technology is either unstable or unsuitable for low-pressure transportation.
The system employs a graphene-coated air intake pipe and an automatic water discharge device, combined with an irregular separation baffle and a float level gauge, to achieve rapid precipitation and efficient removal of condensate. The graphene coating enhances heat dissipation, the separation baffle increases the water-air contact area, and the automatic drainage system promptly removes accumulated water.
It improves the separation efficiency of condensate, reduces the risk of water accumulation and freezing, ensures the stable operation of the coalbed methane gathering and transmission pipeline network, reduces the frequency of manual inspections and operating costs, and adapts to coalbed methane stations under different operating conditions.
Smart Images
Figure CN224032593U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to coalbed methane ground development technical field, concretely relates to a kind of coalbed methane ground well saturated water efficient separation device. BACKGROUND
[0002] In the coalbed methane ground gathering and transportation system, condensate water is often produced in the gas conveying process. The coalbed methane is usually low in pressure when being extracted at wellhead, and the gas itself has limited liquid carrying capacity. As the gas flows in the gathering and transportation pipeline for a long distance, the temperature decreases or the flow state changes, and the water vapor in the original saturated state is easily condensed to form liquid water. The condensate water accumulates in the pipeline, which not only increases the system pressure and reduces the gas conveying efficiency, but also may even cause the decrease of wellhead gas production.
[0003] Especially in the mountainous area with large terrain undulations, such as Qinshui Basin, the coalbed methane wells are scattered, the pipeline layout path is complex, and there are a large number of low-lying points, elbows, tees and other positions prone to water accumulation. Under the condition of low temperature in winter, the flow of the gas-liquid mixture formed by condensate water and coalbed methane is limited, and if it is not separated and discharged in time, it may cause local blockage or even frozen blockage, which seriously affects the stable operation of the entire gathering and transportation system.
[0004] The commonly used water-gas separation methods such as throttling and temperature difference induction cause large pressure drop, which is not conducive to the transportation of low-pressure coalbed methane, and the effect of the latter is unstable. Therefore, there is an urgent need for a water-gas separation technology with reasonable structure, strong adaptability and high automation degree to improve the coalbed methane gathering and transportation efficiency and system safety. UTILITY MODEL CONTENTS
[0005] The utility model aims at a kind of coalbed methane ground well saturated water efficient separation device, by the graphene coating and automatic water discharge device are introduced into gathering and transportation pipeline network saturated water separation device, make coalbed methane saturated water fast condensation gather, and automatically discharge gathering and transportation pipeline network.
[0006] The utility model adopts the following technical scheme: a kind of coalbed methane ground well saturated water efficient separation device, including shell, the upper portion one side of shell is provided with inlet gas cooling pipeline, the outer surface of inlet gas cooling pipeline is coated with graphene coating, the upper portion other side of shell is provided with exhaust pipe line, exhaust pipe line is connected to gathering and transportation pipeline network by check valve, separation baffle is arranged between inlet gas cooling pipeline and exhaust pipe line in shell, the side of separation baffle close to inlet gas cooling pipeline divides the upper space in shell, the bottom surface of shell is provided with drain pipe, drain pipe is connected with automatic drainage device, the side of shell is provided with float level gauge, the top surface of shell is provided with pressure gauge.
[0007] Further, the bottom of the shell is fixedly provided with a support.
[0008] Further, a ball valve is arranged on the drain pipe.
[0009] Further, the separation baffle comprises an upper baffle, a first lower baffle and a second lower baffle, the upper baffle is arranged obliquely from top to bottom to one side of the exhaust pipeline, one end of the first lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom to one side of the intake cooling pipeline, one end of the second lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom to one side of the exhaust pipeline.
[0010] The coal bed gas ground well saturated water efficient separation device provided by the utility model realizes the rapid precipitation and efficient removal of condensed water in coal bed gas by coating the graphene coating with high heat conductivity on the outer surface of the intake pipeline and arranging the efficient separation baffle and the automatic drainage system.
[0011] 1. The device has simple structure and is convenient to install, can be flexibly arranged according to actual working conditions, is suitable for coal bed gas stations of different well types and gathering and transportation conditions, can efficiently condense and separate, the graphene-coated intake pipeline greatly improves the heat dissipation capacity, saturated water in the coal bed gas is rapidly condensed and precipitated, and the condensation efficiency and water-gas separation speed are effectively improved.
[0012] 2. The device is externally provided with a pressure gauge and a liquid level meter, an operator can master the equipment running state and drainage condition in real time, problems can be quickly found and maintenance and replacement can be facilitated, the risk of water accumulation and freezing in low-lying parts of the pipeline is effectively reduced, the continuous and stable operation of the coal bed gas gathering and transportation pipeline network is ensured, and the device is particularly suitable for high-cold and high-difference terrain environments.
[0013] 3. The built-in multi-section separation baffle (upper baffle, first lower baffle and second lower baffle) can realize gas-liquid separation, guide and gather condensed water, improve separation precision and efficiency, and avoid condensed water from entering the subsequent pipeline network system together with the gas.
[0014] 4. The water accumulation height in the shell is monitored by the float liquid level meter, and the automatic drainage device is triggered to discharge the condensed water, manual frequent inspection and manual drainage are avoided, labor cost is reduced, and the operation automation level is improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a structural schematic view of the utility model.
[0016] In the drawing: 1, intake cooling pipeline; 2, exhaust pipeline; 3, pressure gauge; 4-1, first support; 4-2, second support; 5, separation baffle; 6, ball valve; 7, automatic water drainage device; 8, float liquid level meter; 9, shell; 10, check valve. DETAILED DESCRIPTION
[0017] In order to better understand the purpose, structure and function of the utility model, the following will further describe the coal bed gas ground well saturated water efficient separation device of the utility model in combination with the drawings.
[0018] As shown in Figure 1 A coalbed methane ground well saturated water efficient separation device, including the shell 9, the upper part of the shell 9 side is provided with the inlet cooling pipeline 1, the outer surface of the inlet cooling pipeline 1 is coated with graphene coating, the upper part of the shell 9 is provided with the exhaust pipeline 2, the exhaust pipeline 2 is connected to the gathering pipeline network through the one-way valve 10, the separation baffle 5 is arranged between the inlet cooling pipeline 1 and the exhaust pipeline 2 in the shell 9, the separation baffle 5 divides the upper space in the shell 9 near the side of the inlet cooling pipeline 1, the bottom surface of the shell 9 is provided with the drain pipe, the drain pipe is connected to the automatic drainage device 7, the side of the shell 9 is provided with the float liquid level gauge 8, and the top surface of the shell 9 is provided with the pressure gauge 3.
[0019] In this embodiment, the first support 4-1 and the second support 4-2 are fixedly arranged at the bottom of the shell 9. The inlet cooling pipeline 1 adopts a 1m long seamless steel pipe, and the outer surface is coated with a 5mm thick graphene coating, so that the rapid cooling function can be realized. The ball valve 6 is arranged on the drain pipe.
[0020] The separation baffle 5 includes an upper baffle, a first lower baffle and a second lower baffle. The upper baffle is arranged obliquely from top to bottom to the side of the exhaust pipeline 2. One end of the first lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom to the side of the inlet cooling pipeline 1. One end of the second lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom to the side of the exhaust pipeline 2. The irregular separation baffle 5 can increase the contact area of the water-gas mixture with the baffle, which is more conducive to water aggregation and flows to the bottom of the device under the action of its own gravity. The end of the irregular separation baffle 5 is higher than the upper limit of the water accumulation height, which prevents the baffle from being submerged by water and prevents the gas from entering the exhaust pipeline 2.
[0021] The automatic water drainage device 7 is arranged to automatically open the water drainage when the water in the bottom of the shell 9 reaches the upper limit of the set height, and automatically closes when the water reaches the lower limit of the set height. Through the float liquid level gauge 8, the water height in the coalbed methane ground well saturated water efficient separation device can be directly observed, and the automatic water drainage device 7 can be prevented from malfunctioning. The one-way valve 10 can ensure that the gas produced by the coalbed methane ground well can only flow into the gathering pipeline network, so as to avoid the reverse flow of the gas in the gathering pipeline network into the coalbed methane ground well, which can cause adverse effects on production. Through the pressure gauge 3, the gas pressure in the coalbed methane ground well saturated water efficient separation device can be directly observed, and when the pressure is too high, the device needs to be cleaned and blocked in time, and whether the one-way valve 10 is working normally needs to be checked.
[0022] The coal bed gas containing saturated water produced by normal drainage of the coal bed gas ground well is firstly rapidly heat-exchanged and cooled by the inlet gas cooling pipeline 1 of the device under the action of natural pressure difference, most of the saturated water is precipitated and continuously enters the separation baffle 5, the irregular separation baffle 5 further increases the contact area of the water-gas mixture with the baffle, the water continuously gathers, flows to the bottom of the device under the action of gravity, is discharged to the gathering pipeline network through the automatic water discharge device 7, the pressure gauge 3 and the float liquid level meter 8 can judge whether the device works normally, the one-way valve 10 can ensure that the gas produced by the coal bed gas ground well can only flow into the gathering pipeline network, avoids the gas in the gathering pipeline network from flowing reversely into the coal bed gas ground well, and causes adverse effects on production.
[0023] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, these features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.
Claims
1. A coal bed methane ground well saturated water high-efficiency separation device, characterized in that, The shell (9) is provided with an air intake cooling pipeline (1) on one side of the upper part, the outer surface of the air intake cooling pipeline (1) is coated with a graphene coating, the shell (9) is provided with an exhaust pipeline (2) on the other side of the upper part, the exhaust pipeline (2) is connected to a gathering pipeline network through a one-way valve (10), a separation baffle (5) is arranged in the shell (9) between the air intake cooling pipeline (1) and the exhaust pipeline (2), the separation baffle (5) divides the upper space in the shell (9) on the side close to the air intake cooling pipeline (1), a drain pipe is arranged on the bottom surface of the shell (9), the drain pipe is connected to an automatic drainage device (7), a float liquid level meter (8) is arranged on the side surface of the shell (9), and a pressure gauge (3) is arranged on the top surface of the shell (9).
2. The coal bed gas surface well saturated water high-efficiency separation device according to claim 1, characterized in that, The bottom of the shell (9) is fixedly provided with a support.
3. The coal bed gas surface well saturated water high-efficiency separation device according to claim 1, characterized in that, A ball valve (6) is arranged on the drain pipe.
4. The coal bed gas surface well saturated water efficient separation device according to any one of claims 1-3, characterized in that, The separation baffle (5) comprises an upper baffle, a first lower baffle and a second lower baffle, the upper baffle is arranged obliquely from top to bottom on the side of the exhaust pipeline (2), one end of the first lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom on the side of the air intake cooling pipeline (1), one end of the second lower baffle is connected to the lower end of the upper baffle, and the other end is arranged obliquely from top to bottom on the side of the exhaust pipeline (2).