A skid-mounted deaerator applied to an oil platform

Abstract

The present application relates to a kind of pry dress type deaerator applied to oil platform, safety valve is respectively arranged on heating steam pipeline and exhaust steam pipeline, for monitoring the pressure of heating steam pipeline and the pressure in deaerator, and provide pressure protection to pipeline and shell;Deaerator body is provided with temperature sensor, liquid level meter and pressure transmitter, real-time feedback pressure temperature and liquid level signal when equipment runs;Water outlet pipe is integrated with sampling water cooler and online oxygen analyzer, realizes online monitoring oxygen content function;Steam inlet pipeline is integrated with pneumatic quick closing valve, steam pressure reducing regulating valve and steam pressure transmitter.The present application is by reasonably optimizing the steam, exhaust steam, feed water, water outlet pipeline of deaerator and corresponding valve arrangement, uses integrated supply design, substantially reduces the workload and construction difficulty of site, improves overall construction efficiency.The present application integrates online oxygen content detection function, can monitor water outlet oxygen content in real time, prevents oxygen corrosion phenomenon of boiler.

Description

Technical Field

[0001] This invention relates to a boiler feedwater treatment system, and more particularly to a skid-mounted deaerator for use on oil platforms. Background Technology

[0002] Currently, in the field of boiler feedwater treatment technology, to ensure that the feedwater entering the boiler meets the oxygen content requirements and to prevent boiler oxygen corrosion, deaerators are typically used to treat the boiler feedwater and remove non-condensable gases such as oxygen. The system also requires corresponding steam heating pipelines, exhaust pipelines, feedwater outlet pipelines, and independent water quality testing facilities, generally spanning multiple decks and compartments. However, for limited operating platforms or applications with confined spaces, such as oil platforms, on-site construction is difficult. Furthermore, the supporting facilities are distributed, with each unit scattered, occupying a large area, and requiring numerous connecting pipelines, resulting in low overall system construction efficiency.

[0003] Therefore, it is necessary to design a skid-mounted deaerator for use on oil platforms. By rationally optimizing the deaerator and its corresponding supporting facilities, and adopting an integrated skid-mounted structural design technology, the steam inlet, steam outlet, water supply, and water outlet pipelines, as well as corresponding valves and water quality testing equipment, can be integrated together. The skid-mounted structural design has the characteristics of fewer connecting pipelines, compact structure, and small footprint. At the same time, it can effectively reduce the amount of on-site construction, optimize system layout, and improve the overall construction efficiency of the project. Summary of the Invention

[0004] To improve the construction efficiency of boiler feedwater treatment systems on oil platforms, optimize system layout, and reduce system footprint and on-site construction, this invention provides a skid-mounted deaerator for use on oil platforms.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a skid-mounted deaerator for oil platforms, comprising a pneumatic quick-closing valve, a steam pressure reducing and regulating valve, a steam pressure transmitter, a safety valve, a deaerator body, an internal temperature sensor, a level gauge, a sampling water cooler, an online oxygen analyzer, an internal pressure transmitter, pipeline valves, and a control system. Safety valves are respectively installed on the heating steam pipeline and the exhaust steam pipeline to monitor the pressure of the heating steam pipeline and the pressure inside the deaerator, and to provide pressure protection for the pipelines and the shell. The deaerator body is equipped with a temperature sensor, a level gauge, and a pressure transmitter to provide real-time feedback of pressure, temperature, and level signals during equipment operation. A sampling water cooler and an online oxygen analyzer are integrated on the outlet water pipe to achieve online monitoring of oxygen content, effectively preventing oxygen corrosion in the boiler. A pneumatic quick-closing valve, a steam pressure reducing and regulating valve, and a steam pressure transmitter are integrated on the steam inlet pipeline.

[0006] Furthermore, based on the feedback signal from the steam pressure transmitter, the pneumatic quick-closing valve can quickly cut off the steam source when the steam pressure reducing valve and the system liquid level control malfunction, ensuring the safe use of the equipment.

[0007] Furthermore, the steam pressure reducing valve reduces the pressure of the high-pressure steam to the working pressure required for the normal operation of the deaerator based on the feedback signal from the pressure transmitter inside the unit, while automatically controlling the operating pressure inside the controller to maintain stable system operation.

[0008] Furthermore, a pneumatic quick-closing valve is installed before the steam pressure reducing regulating valve on the steam pipeline to quickly shut off the steam when the steam pressure reducing regulating valve fails, ensuring the safety of downstream equipment.

[0009] Furthermore, in skid-mounted deaerators applied to oil platforms, pneumatic quick-closing valves, steam pressure reducing and regulating valves, steam pressure transmitters, safety valves, deaerator bodies, internal temperature sensors, level gauges, sampling water coolers, online oxygen analyzers, internal pressure transmitters, pipeline valves, piping, valves, instruments, and operating platforms are all integrated into a common framework to form a skid-mounted structure. This skid-mounting achieves functionalization of steam inlet, outlet, feedwater, and outlet pipelines, as well as corresponding valves and online oxygen content monitoring modules.

[0010] The beneficial effects of this invention are:

[0011] (1) By rationally optimizing the layout of the steam, exhaust, water supply, and water outlet pipelines and corresponding valves of the deaerator, and adopting an integrated supply design, the workload and construction difficulty on site have been greatly reduced, and the overall construction efficiency has been improved.

[0012] (2) This invention integrates online oxygen content detection function, which can monitor the oxygen content of the effluent in real time and prevent oxygen corrosion in the boiler.

[0013] (2) The skid-mounted structure design is compact, occupies little space, has a high space utilization rate, is easy to install, and is convenient for later operation and maintenance management. Attached Figure Description

[0014] Figure 1 This is a diagram of the skid-mounted deaerator system of the present invention applied to an oil platform;

[0015] Figure 2 This is a layout diagram of the skid-mounted deaerator of the present invention applied to an oil platform.

[0016] In the diagram: 1-Pneumatic quick-closing valve, 2-Steam pressure reducing regulating valve, 3-Steam pressure transmitter, 4-Safety valve one, 5-Safety valve two, 6-Deaerator body, 7-Internal temperature sensor, 8-Level gauge, 9-Sampling water cooler, 10-Online oxygen analyzer, 11-Internal pressure transmitter. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, this invention discloses a skid-mounted deaerator for oil platforms, comprising a pneumatic quick-closing valve 1, a steam pressure regulating valve 2, a steam pressure transmitter 3, a first safety valve 4, a second safety valve 5, a deaerator body 6, an internal temperature sensor 7, a level gauge 8, a sampling water cooler 9, an online oxygen analyzer 10, an internal pressure transmitter 11, pipeline valves, and a control system. This skid-mounted structure integrates steam inlet, exhaust, feedwater, and outlet pipelines and corresponding valves, as well as online oxygen content monitoring functions. It optimizes the conventional dispersed layout spanning multiple decks and compartments by integrating these components into a single skid, thus improving system layout.

[0019] like Figure 1 As shown, the steam inlet pipeline integrates a pneumatic quick-closing valve 1, a steam pressure reducing regulating valve 2, and a steam pressure transmitter 3. Based on the feedback signal 3 from the steam pressure transmitter 3, the pneumatic quick-closing valve 1 can quickly cut off the steam source in case of malfunctions in the steam pressure reducing regulating valve 2 and the system level control, ensuring safe operation of the equipment. The steam pressure reducing regulating valve 2, based on the feedback signal from the internal pressure transmitter 11, reduces the high-pressure steam to the working pressure required for normal operation of the deaerator, while simultaneously automatically controlling the internal operating pressure to maintain stable system operation. Safety valve 4 and safety valve 5 are integrated into the exhaust pipeline for overpressure protection of the pipeline and the deaerator body. The deaerator body 6 is equipped with an internal temperature sensor 7, a level gauge 8, and an internal pressure transmitter 11, providing real-time feedback of pressure, temperature, and level signals during equipment operation. A sampling water cooler 9 and an online oxygen analyzer 10 are integrated into the feedwater outlet pipe, enabling real-time online monitoring of the oxygen content in the outlet water and providing audible and visual alarms, effectively preventing oxygen corrosion in the boiler.

[0020] A steam pressure reducing valve 2 is installed on the steam pipeline to directly reduce the steam pressure from a maximum of 21MPa to 0.085MPa. A pneumatic quick-closing valve 1 is installed before the pressure reducing valve to quickly close the steam when the pressure reducing valve fails, ensuring the safety of downstream equipment.

[0021] like Figure 2 As shown, all equipment, pipelines, valves, instruments, and operating platforms of the skid are installed within a common frame, resulting in a compact structure, small footprint, easy installation, simple piping, and convenient later operation and maintenance. It should be further noted that, given the limited platform space and numerous equipment, the skid-mounted design achieves modular functionality, equipment consolidation, and simplified operation; the high concentration of platform equipment and limited on-site pipeline construction space significantly reduce the amount of on-site construction for the entire system, optimizing the layout of pipelines, valves, and instruments.

Claims

1. A skid-mounted deaerator for use on an oil platform, characterized in that: The pry-mounted deaerator comprises a pneumatic quick closing valve, a steam pressure reducing regulating valve, a steam pressure transmitter, a safety valve, a deaerator body, an in-device temperature sensor, a liquid level meter, a sampling water cooler, an online oxygen analyzer, an in-device pressure transmitter, a pipeline valve and a control system, and the safety valve is arranged on the heating steam pipeline and the exhaust steam pipeline respectively, used for monitoring the pressure of the heating steam pipeline and the pressure in the deaerator, and providing pressure protection for the pipeline and the shell; the temperature sensor, the liquid level meter and the pressure transmitter are arranged on the deaerator body, and the pressure temperature and the liquid level signals during the operation of the equipment are fed back in real time; the sampling water cooler and the online oxygen analyzer are integrated on the water outlet pipe, realizing the online monitoring of the oxygen content and effectively preventing the oxygen corrosion of the boiler; the pneumatic quick closing valve, the steam pressure reducing regulating valve and the steam pressure transmitter are integrated on the steam inlet pipeline; the pneumatic quick closing valve, the steam pressure reducing regulating valve, the steam pressure transmitter, the safety valve, the deaerator body, the in-device temperature sensor, the liquid level meter, the sampling water cooler, the online oxygen analyzer, the in-device pressure transmitter, the pipeline valve, the pipeline, the valve, the instrument and the operation platform are integrated in a common frame to form a pry-mounted structure, so that the steam inlet pipeline, the exhaust steam pipeline, the water supply pipeline, the water outlet pipeline, the corresponding valve and the online oxygen content monitoring module are functionalized through pry block.

2. The skid-mounted deaerator for use in an oil platform according to claim 1, characterized in that: The pneumatic quick closing valve can quickly cut off the steam source according to the feedback signal of the steam pressure transmitter when the steam pressure reducing regulating valve and the system liquid level control fail, so as to ensure the safety of the equipment.

3. The skid-mounted deaerator for use in an oil platform according to claim 1, characterized in that: The steam pressure reducing regulating valve can reduce the high-pressure steam to the working pressure required by the normal operation of the deaerator according to the feedback signal of the in-device pressure transmitter, and automatically control the in-device operation pressure, so as to keep the system stable.

4. The skid-mounted deaerator for use in an oil platform according to claim 1, characterized in that: The pneumatic quick closing valve arranged in front of the steam pressure reducing regulating valve on the steam pipeline can quickly close the steam when the steam pressure reducing regulating valve fails, so as to ensure the safety of the downstream equipment.

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