A condensate recovery system within a heavy oil tank oil gas recovery pipeline
Patent Information
- Application Number
- CN202522402456.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-12
Smart Images
Figure CN224830542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heavy oil tank technology, and in particular to a condensate recovery system for a heavy oil tank oil and gas recovery pipeline. Background Technology
[0002] In existing technologies, although heavy oil storage tanks are heated to ≥50℃ to reduce viscosity, the volatile VOCs (including asphaltenes, waxes, and gums) in the exposed or simply insulated recovery pipelines condense rapidly when cooled (the wall temperature can drop sharply at night / in winter), which drastically reduces the pipeline flow area, causing overpressure at the tank top and VOC escape. Traditional "thickened insulation" or "full-process heating" only delays deposition but cannot prevent the thermal condensation and cross-linking of heavy components at 350℃+. Heavy components easily condense into liquid, forming viscous asphaltenes or waxy deposits, resulting in a reduction in the pipeline flow cross-sectional area or even complete blockage. Utility Model Content
[0003] This invention provides a condensate recovery system for oil and gas recovery pipelines in heavy oil tanks, which solves the problem of blockage caused by viscous deposits formed by the condensation and thermal polycondensation of ultra-heavy components in the recovery pipelines of heavy oil storage tanks (including asphaltenes, waxes, and gums) at low temperatures.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A condensate recovery system within a heavy oil tank vapor recovery pipeline includes: a heavy oil storage tank, a condensate collection tank, a booster pump, and a vapor recovery device; the vapor outlet of the heavy oil storage tank is connected to the inlet of the vapor recovery device via a vapor outlet pipeline; the lowest point of the vapor outlet pipeline is connected to the condensate collection tank via a condensate inlet pipeline; the outlet of the condensate collection tank is connected to a sludge tank via a condensate outlet pipeline; a booster pump is installed on the condensate outlet pipeline between the condensate collection tank and the sludge tank; a monitoring device is installed on the condensate collection tank; and the condensate collection tank is connected to a nitrogen system via a pipeline. The monitoring device includes: a temperature monitor, a remote pressure gauge, and a liquid level monitor.
[0005] Furthermore, a single-call valve is installed on the oil and gas output pipeline near the output end of the heavy oil storage tank.
[0006] Furthermore, the condensate collection tank is equipped with a safety valve.
[0007] Furthermore, a check valve and a third gate valve are sequentially installed on the condensate output pipeline after the booster pump.
[0008] Furthermore, a first gate valve is provided on the connecting pipeline between the condensate collection tank and the nitrogen system.
[0009] Furthermore, a second gate valve is installed on the condensate inlet pipeline.
[0010] The beneficial effects of this utility model are as follows: This utility model discloses a condensate recovery system within a heavy oil tank's oil and gas recovery pipeline. By installing a condensate collection tank at the lowest point of the oil and gas output pipeline and integrating a temperature monitor, a remote pressure gauge, and a level monitor with remote alarm and gate valve, it achieves centralized condensate recovery and automatic pressure-temperature balance within the tank, eliminating the risks of overpressure leakage and negative pressure air intake. The condensate is transported using a dual-mode system of "explosion-proof pump lifting + nitrogen pressure delivery," which is highly efficient and energy-saving for short-distance, high-flow scenarios and operates without electricity in flammable, explosive, or long-distance scenarios, ensuring zero sparks and zero emissions. The condensate is then transferred in a sealed manner to a waste oil tank for collection, achieving a triple benefit of safety, environmental protection, and high efficiency. Attached Figure Description
[0011] To more clearly illustrate the embodiments of this utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the overall design of this utility model.
[0013] Explanation of icon numbers: 1. Heavy oil storage tank; 2. Condensate collection tank; 3. Temperature monitor; 4. Remote pressure gauge; 5. Liquid level monitor; 6. Booster pump; 7. Oil and gas recovery device; 8. Single call valve; 9. Safety valve; 10. Check valve; 11. First gate valve; 12. Second gate valve; 13. Third gate valve. Detailed Implementation
[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0019] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0020] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0021] This utility model provides a technical solution: a condensate recovery system within a heavy oil tank's oil and gas recovery pipeline, such as... Figure 1 As shown, the system includes: a heavy oil storage tank 1, a condensate collection tank 2, a booster pump 6, and an oil and gas recovery device 7; the oil and gas outlet of the heavy oil storage tank 1 is connected to the inlet of the oil and gas recovery device 7 via an oil and gas outlet pipeline; the condensate collection tank 2 is connected to the lowest point of the oil and gas outlet pipeline via a condensate inlet pipeline; the outlet of the condensate collection tank 2 is connected to a sludge tank via a condensate outlet pipeline; a booster pump 6 is installed on the condensate outlet pipeline between the condensate collection tank 2 and the sludge tank; a monitoring device is installed on the condensate collection tank 2; and the condensate collection tank 2 is connected to a nitrogen system via a pipeline. The monitoring device includes: a temperature monitor 3, a remote pressure gauge 4, and a liquid level monitor 5.
[0022] A single-call valve 8 is provided on the oil and gas output pipeline near the output end of the heavy oil storage tank 1; a safety valve 9 is provided on the condensate collection tank 2; a check valve 10 and a third gate valve 13 are provided in sequence on the condensate output pipeline behind the booster pump 6; a first gate valve 11 is provided on the connection pipeline between the condensate collection tank 2 and the nitrogen system; and a second gate valve 12 is provided on the condensate input pipeline.
[0023] The inlet of the condensate collection tank 2 is connected to the condensate input pipeline via a flange such as DN80 / DN100. Check valves 10 are installed on the condensate input and output pipelines to prevent backflow of the medium.
[0024] The condensate collection tank 2 is used to centrally recover the condensate that condenses in the oil and gas output pipeline due to temperature changes.
[0025] The liquid level monitor 5 in the monitoring device detects the liquid level height of the condensate collection tank 2 in real time. By setting the liquid level height alarm threshold (such as 80% of the volume), an alarm is triggered, and a manual or automatic conveying program is initiated.
[0026] The monitoring device includes a remote pressure gauge 4, which monitors and ensures the pressure inside the condensate collection tank 2 in real time, avoiding the risk of overpressure leakage or negative pressure. The remote pressure gauge 4 (range 0~1.0MPa) is linked with the safety valve to maintain a slight positive pressure inside the tank.
[0027] The temperature monitor 3 and remote sensor monitor in real time, and heat tracing (temperature control range 30~40℃) is installed in the condensate collection tank 2 and pipelines to prevent condensate from solidifying.
[0028] In the condensate recovery system of the oil and gas recovery pipeline in the heavy oil tank of this utility model, when the lifting pump 6 is used for lifting and conveying: when the liquid level reaches the preset value, the lifting pump 6 is started to pressurize and transport the condensate to the sludge tank, or the condensate is pushed into the sludge tank by nitrogen injection pressurization.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A condensate recovery system within a heavy oil tank vapor recovery pipeline, characterized in that, include: The heavy oil storage tank (1), condensate collection tank (2), booster pump (6), and oil and gas recovery device (7) are provided. The oil and gas outlet of the heavy oil storage tank (1) is connected to the inlet of the oil and gas recovery device (7) through an oil and gas outlet pipeline. The condensate collection tank (2) is connected to the condensate collection tank (2) through a condensate inlet pipeline at the lowest point of the oil and gas outlet pipeline. The outlet of the condensate collection tank (2) is connected to the sludge tank through a condensate outlet pipeline. A booster pump (6) is provided on the condensate outlet pipeline between the condensate collection tank (2) and the sludge tank. A monitoring device is provided on the condensate collection tank (2). The condensate collection tank (2) is connected to the nitrogen system through a pipeline. The monitoring device includes: a temperature monitor (3), a remote pressure gauge (4), and a liquid level monitor (5).
2. The condensate recovery system in a heavy oil tank vapor recovery pipeline according to claim 1, characterized in that, A single call valve (8) is installed at the output end of the oil and gas output pipeline near the heavy oil storage tank (1).
3. The condensate recovery system in a heavy oil tank vapor recovery pipeline according to claim 1, characterized in that, The condensate collection tank (2) is equipped with a safety valve (9).
4. The condensate recovery system in a heavy oil tank vapor recovery pipeline according to claim 1, characterized in that, The condensate output pipeline is located behind the booster pump (6) and is equipped with a check valve (10) and a third gate valve (13) in sequence.
5. The condensate recovery system in a heavy oil tank vapor recovery pipeline according to claim 1, characterized in that, A first gate valve (11) is provided on the connecting pipeline between the condensate collection tank (2) and the nitrogen system.
6. The condensate recovery system in a heavy oil tank vapor recovery pipeline according to claim 1, characterized in that, A second gate valve (12) is installed on the condensate inlet pipeline.