Flue gas waste heat recycling boiler for oil field united station

Abstract

The utility model discloses a flue gas waste heat recycling boiler for an oil field united station. The flue gas waste heat recycling boiler comprises a boiler body, a boiler door, a gas detector and a smoke exhaust pipe, wherein the boiler door is nested and attached to the inner side of the rear end of the boiler body and hinged to the boiler body; the gas detector is arranged on the right side of the boiler body; a combustion heat supply structure is arranged on the inner side of the lower end of the boiler body, a filter screen is arranged on the inner side of the right lower end of the boiler body in an attached mode, and a limiting strip fixedly connected with the boiler body is arranged outside the filter screen in an attached mode; a fuel gas backflow structure is arranged between the boiler body and the gas detector, and a flue gas waste heat recycling structure is arranged in the gas detector. According to the flue gas waste heat recycling boiler for the oil field united station, fuel gas which is not burnt completely can be conveniently refluxed for use, flue gas waste heat can be conveniently recycled, resource waste is avoided, and flue gas can be conveniently discharged after being filtered and purified.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield joint stations, specifically to a flue gas waste heat recovery and reuse boiler for oilfield joint stations. Background Technology

[0002] An oilfield joint station is a comprehensive production process that integrates multiple processes such as oil-gas-water separation, crude oil dehydration, crude oil stabilization, incoming oil metering, crude oil transportation, water injection, sewage treatment, and natural gas processing and transportation. Among these processes, the boiler plays a crucial role as an important energy supply device.

[0003] For example, Chinese utility model patent CN221484265U discloses an environmentally friendly gas-fired boiler for recovering and reusing waste heat from flue gas in an oilfield joint station. This utility model relates to the field of flue gas waste heat utilization technology. The boiler features an inlet pipe connected to the right side of the combustion boiler; a diversion pipe connected to the right side of the inlet pipe; a recovery box located on the right side of the combustion boiler, with a movable door at the front opening; connecting pipes connected to the front and rear ends of the diversion pipe, passing through the left and right walls of the recovery box and ending on the right side; an outlet pipe connected to the right end of the connecting pipe; a first water tank symmetrically fixed to the inner bottom wall of the recovery box, with connecting pipes connected to it; and a first motor fixed to the inner top wall of the recovery box, with a drive shaft fixed to the output end of the first motor, and a drive gear fitted onto the drive shaft. This facilitates the recovery and reuse of waste heat from flue gas, ensuring the rational use of resources.

[0004] However, existing boilers used in oilfield joint stations still have some problems during use. For example, it is generally not convenient to recycle unburned gas, not convenient to recover and reuse waste heat from flue gas, which easily wastes resources, and it is not convenient to filter and purify flue gas before emission. Therefore, we propose a flue gas waste heat recovery and reuse boiler for oilfield joint stations to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a flue gas waste heat recovery and reuse boiler for oilfield joint stations, in order to solve the problems mentioned in the background art that still exist in the use of existing oilfield joint station boilers, such as the inconvenience of recirculating unburned gas, the inconvenience of recovering and reusing flue gas waste heat, the waste of resources, and the inconvenience of filtering and purifying flue gas before emission.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flue gas waste heat recovery and reuse boiler for an oilfield joint station, comprising a boiler body, a furnace door nested and hinged to the inner rear end of the boiler body, a gas detector installed on the right side of the boiler body, and a flue pipe fixedly connected to the right side of the gas detector.

[0007] Also includes:

[0008] A combustion and heating structure is provided on the inner side of the lower end of the boiler body, and a filter screen is attached to the inner side of the lower right end of the boiler body, and a limiting strip that is fixedly connected to the boiler body is attached to the outside of the filter screen.

[0009] A gas recirculation structure is provided between the boiler body and the gas detector, and a waste heat recovery and reuse structure for flue gas is provided inside the gas detector.

[0010] Preferably, the combustion heating structure includes a gas pipe, a hollow plate, a burner, and a fan, with the gas pipe passing through the inner side of the lower front end of the boiler body, and a fan connected to it installed on the left side of the boiler body.

[0011] Preferably, the gas pipe is connected to a hollow disc located on the inner side of the middle of the lower end of the boiler body, and the hollow disc has burners evenly distributed on it.

[0012] Preferably, the gas recirculation structure includes a flue pipe, a recirculation pipe, a recovery box, a first electric valve, a gas detector, a display, and a controller. The flue pipe and the recirculation pipe are both fixedly connected to the lower right side of the boiler body, and the recirculation pipe is fixedly connected to the lower middle side of the flue pipe. A gas detector embedded in the boiler body is provided on the left rear side of the recirculation pipe.

[0013] Preferably, the flue is externally connected to a first electric valve fixedly installed inside the recycling bin, and the display and controller are embedded in the inner side of the upper right rear end of the recycling bin.

[0014] Preferably, the flue gas waste heat recovery and reuse structure includes a display, a buzzer, a controller, a second electric valve, a water pipe, a temperature sensor, a heat exchange sleeve, a perforated baffle, and a heat exchange plate. The buzzer and temperature sensor are respectively embedded and installed on the inner side of the upper right rear end and the inner side of the rear end of the recovery box. The second electric valve is fixedly installed on the inner side of the upper rear end and the lower rear end of the recovery box, and the water pipe is externally connected to the second electric valve.

[0015] Preferably, the heat exchange sleeve is fixedly connected to the inner side of the middle part of the boiler body, and both ends of the heat exchange sleeve are connected to the first electric valve and the flue pipe respectively, and a protruding purification rod is nested and attached to the inner side of the upper right end of the flue pipe.

[0016] Preferably, the heat exchange sleeve is provided with perforated baffles that are fixedly connected to it at equal intervals, and the heat exchange sleeve is provided with heat exchange plates that are fixedly connected to it at equal intervals and are arranged alternately with the perforated baffles.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the flue gas waste heat recovery and reuse boiler used in the oilfield joint station facilitates the return of unburned gas and the recovery and reuse of flue gas waste heat, avoids resource waste, and facilitates the filtration and purification of flue gas before emission.

[0018] 1. The boiler is equipped with a boiler body, a flue pipe, a return pipe, and a recovery box. The flue pipe and the return pipe are fixedly connected on the right side of the boiler body. The return pipe is connected to the lower middle part of the flue pipe. The flue pipe is connected to the first electric valve installed on the inner left side of the recovery box. The display and controller are embedded in the inner right rear upper end of the recovery box, and a gas detector is embedded in the inner right rear lower end of the boiler body. Therefore, it is convenient to return unburned gas for use.

[0019] 2. The system is equipped with a recovery box, a first electric valve, a heat exchange sleeve, and perforated baffles. The heat exchange sleeve with perforated baffles is fixedly connected to the inner side of the middle part of the recovery box. The left and right sides of the heat exchange sleeve are connected to the first electric valve and the flue pipe, respectively. Heat exchange plates are fixed at equal intervals on the outer side of the heat exchange sleeve, which are staggered with the perforated baffles. The second electric valve with a water pipe is symmetrically installed on the inner side of the rear end of the recovery box. A display, a buzzer, and a controller are embedded in the inner side of the upper right rear end of the recovery box. A temperature sensor is embedded in the inner side of the rear end of the recovery box. Therefore, it is convenient to recover and reuse the waste heat of the flue gas and avoid resource waste.

[0020] 3. It is equipped with a filter screen, a limiting strip, a flue pipe, and a purification rod. The filter screen is attached to the left side of the flue pipe and the return pipe and is fitted inside the boiler body. The limiting strip is attached to the outside of the filter screen and fixed to the boiler body. The flue pipe is fixedly connected to the outside of the recovery box. The purification rod is nested and attached to the inner side of the upper right end of the flue pipe. Therefore, it is convenient to filter and purify the flue gas before it is discharged. Attached Figure Description

[0021] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a top view sectional structural diagram of the connection between the boiler body and the furnace door of this utility model;

[0023] Figure 3 This is a front view cross-sectional three-dimensional structural diagram of the connection between the heat exchanger sleeve and the recovery box of this utility model;

[0024] Figure 4This is a top-view cross-sectional three-dimensional structural diagram of the connection between the heat exchanger sleeve and the recovery box of this utility model;

[0025] Figure 5 This is a side view sectional diagram of the connection between the filter screen and the boiler body of this utility model;

[0026] Figure 6 This is a frontal cross-sectional three-dimensional structural diagram of the connection between the exhaust pipe and the purification rod of this utility model.

[0027] In the diagram: 1. Boiler body; 2. Gas pipe; 3. Hollow disc; 4. Burner nozzle; 5. Fan; 6. Furnace door; 7. Flue pipe; 8. Return pipe; 9. Recovery box; 10. First electric valve; 11. Gas detector; 12. Display; 13. Buzzer; 14. Controller; 15. Second electric valve; 16. Water pipe; 17. Temperature sensor; 18. Heat exchanger jacket; 19. Perforated baffle; 20. Heat exchanger plate; 21. Filter screen; 22. Limiting strip; 23. Flue pipe; 24. Purification rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 This utility model provides a technical solution: a flue gas waste heat recovery and reuse boiler for an oilfield joint station, comprising a boiler body 1, a gas pipe 2, a hollow plate 3, a burner 4, a fan 5, a furnace door 6, a flue pipe 7, a return pipe 8, a recovery box 9, a first electric valve 10, a gas detector 11, a display 12, a buzzer 13, a controller 14, a second electric valve 15, a water pipe 16, a temperature sensor 17, a heat exchange sleeve 18, a perforated baffle 19, a heat exchange plate 20, a filter screen 21, a limiting strip 22, a flue pipe 23, and a purification rod 24. A furnace door 6, hinged to and attached to the inner rear end of the boiler body 1, a gas detector 11 and a flue pipe 23 fixedly connected to the right side of the gas detector 11 are provided on the inner rear end of the boiler body 1. A combustion heating structure is provided on the inner lower end of the boiler body 1, and a filter screen 21 is attached to the inner lower right end of the boiler body 1. A limiting strip 22 fixedly connected to the boiler body 1 is attached to the outside of the filter screen 21. A gas return structure is provided between the boiler body 1 and the gas detector 11, and a flue gas waste heat recovery and reuse structure is provided inside the gas detector 11.

[0030] To address the problems in existing technologies, such as the inconvenience of recirculating unburned gas, the difficulty of recovering and reusing waste heat from flue gas, the waste of resources, and the inconvenience of filtering and purifying flue gas before emission, this embodiment employs the following technical solution: Figure 1 and Figure 2 Firstly, gas can be introduced through the gas pipe 2 penetrating the inner side of the lower front end of the boiler body 1, allowing the gas to enter the hollow plate 3 fixedly connected to the gas pipe 2. Oxygen can be supplied by the fan 5 installed on the left side of the boiler body 1, so that the burners 4 evenly distributed on the hollow plate 3 emit flames for heating, thus heating the upper part of the boiler body 1. During the operation of the boiler, the controller 14 embedded in the inner side of the upper right rear end of the recovery box 9 can control the first electric valve 10 fixedly installed on the inner side of the left side of the recovery box 9, the gas detector 11 embedded in the inner side of the lower right rear end of the boiler body 1, and the gas detector 11 fixed in the inner side of the upper right rear end of the recovery box 9. The embedded display 12 works in conjunction with the gas detector 11 to sense the gas inside the boiler body 1, and the display 12 displays the gas sensed by the gas detector 11. When the gas detector 11 senses that the gas inside the boiler body 1 is not completely burned, the controller 14 controls the first electric valve 10 to disconnect the connection between the flue pipe 7 fixedly connected to the right side of the boiler body 1 and the first electric valve 10. Since the flue pipe 7 is fixedly connected to the return pipe 8, and the left end of the return pipe 8 is fixedly connected to the lower right side of the boiler body 1, it is convenient to allow the unburned gas to flow back into the boiler body 1 for re-burning.

[0031] like Figure 1 , Figure 3 and Figure 4When the gas detector 11 senses a low content of unburned gas in the boiler body 1, it can control the first electric valve 10 to operate via the controller 14, so that the flue pipe 7 and the first electric valve 10 are connected. Since a heat exchange sleeve 18 fixedly connected to the recovery box 9 is provided on the right outer side of the first electric valve 10, and a flue pipe 23 is fixedly connected to the right side of the recovery box 9, it is convenient for the flue gas to enter the heat exchange sleeve 18 through the flue pipe 7 and then be discharged through the flue pipe 23. Since a heat exchange sleeve 18 with perforated baffles 19 fixedly and interlaced on the inner side of the middle part of the recovery box 9 is fixedly connected, and heat exchange plates 20 with perforated baffles 19 are fixedly and interlaced on the outer side of the heat exchange sleeve 18, it is convenient for the flue gas to be cleaned through the heat exchange sleeve 18 and the heat exchange plates 20. Heat exchange is performed, and the incoming flue gas is blocked by a perforated baffle 19, which increases the heat exchange time of the flue gas waste heat and makes the waste heat recovery effect of the flue gas better. Since the second electric valve 15 is symmetrically installed on the inner side of the upper rear end and the inner side of the lower rear end of the recovery box 9, and the water pipe 16 is connected to the outside of the second electric valve 15, the display 12, the buzzer 13 and the controller 14 are embedded in the inner side of the upper right rear end of the recovery box 9, and the temperature sensor 17 is embedded in the inner side of the rear end of the recovery box 9, so that the water temperature can be sensed by the temperature sensor 17, the display 12 can display the water temperature, and the buzzer 13 can sound to remind when the water temperature exceeds the limit, so that the hot water can be drained and reused, thereby facilitating the recovery and reuse of flue gas waste heat and avoiding resource waste.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 6 A filter screen 21 is attached to the inner side of the lower right end of the boiler body 1, located on the left side of the flue gas pipe 7 and the return pipe 8. A limiting strip 22 is attached to the outside of the filter screen 21 and is fixedly connected to the boiler body 1. This facilitates the filtration of flue gas and makes it easy to clean the filter screen 21 later by rotating the furnace door 6 connected to the boiler body 1. A flue gas pipe 23 is fixedly connected to the outside of the recovery box 9. A protruding purification rod 24 is nested and attached to the inner side of the upper right end of the flue gas pipe 23. This facilitates the purification of flue gas by the purification rod 24 and makes it easy to remove and replace the purification rod 24 later. All the electrical components mentioned above are existing technologies and will not be described in detail here.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flue gas waste heat recovery and reuse boiler for oilfield joint station, comprising a boiler body (1), a furnace door (6) nested and hinged to the inner rear end of the boiler body (1), a gas detector (11) set on the right side of the boiler body (1), and a flue pipe (23) fixedly connected to the right side of the gas detector (11). Its features are, Also includes: The lower inner side of the boiler body (1) is provided with a combustion heating structure, and a filter screen (21) is attached to the lower right inner side of the boiler body (1), and a limiting strip (22) is attached to the outside of the filter screen (21) and is fixedly connected to the boiler body (1). A gas recirculation structure is provided between the boiler body (1) and the gas detector (11), and a flue gas waste heat recovery and reuse structure is provided inside the gas detector (11).

2. The boiler for recovering and reusing waste heat from flue gas in an oilfield combined station according to claim 1, characterized in that: The combustion heating structure includes a gas pipe (2), a hollow plate (3), a burner (4) and a fan (5), and the gas pipe (2) passes through the inner side of the lower front end of the boiler body (1), and the fan (5) is installed on the left side of the boiler body (1) and connected to it.

3. The boiler for recovering and reusing waste heat from flue gas in an oilfield combined station according to claim 2, characterized in that: The gas pipe (2) is connected to a hollow plate (3) located on the inner side of the middle of the lower end of the boiler body (1), and the burners (4) are evenly distributed on the hollow plate (3).

4. The boiler for recovering and reusing waste heat from flue gas in an oilfield combined station according to claim 1, characterized in that: The gas recirculation structure includes a flue pipe (7), a recirculation pipe (8), a recovery box (9), a first electric valve (10), a gas detector (11), a display (12), and a controller (14). The flue pipe (7) and the recirculation pipe (8) are both fixedly connected to the lower right side of the boiler body (1), and the recirculation pipe (8) is fixedly connected to the lower middle side of the flue pipe (7). A gas detector (11) is installed on the left rear side of the recirculation pipe (8) and embedded in the boiler body (1).

5. A flue gas waste heat recovery and reuse boiler for an oilfield combined station according to claim 4, characterized in that: The smoke pipe (7) is externally connected to a first electric valve (10) fixedly installed inside the recycling bin (9), and the display (12) and controller (14) are embedded in the inner side of the upper right rear end of the recycling bin (9).

6. The boiler for recovering and reusing waste heat from flue gas in an oilfield combined station according to claim 1, characterized in that: The waste heat recovery and reuse structure includes a display (12), a buzzer (13), a controller (14), a second electric valve (15), a water pipe (16), a temperature sensor (17), a heat exchange sleeve (18), a perforated baffle (19), and a heat exchange plate (20). The buzzer (13) and the temperature sensor (17) are respectively embedded in the inner side of the upper right rear end and the inner side of the rear end of the recovery box (9). The second electric valve (15) is fixedly installed on the inner side of the upper rear end and the lower rear end of the recovery box (9). The second electric valve (15) is connected to the water pipe (16).

7. A flue gas waste heat recovery and reuse boiler for an oilfield combined station according to claim 6, characterized in that: The heat exchange sleeve (18) is fixedly connected to the inner side of the middle part of the boiler body (1), and the two ends of the heat exchange sleeve (18) are connected to the first electric valve (10) and the flue pipe (23) respectively. The upper right end of the flue pipe (23) is nested with a protruding purification rod (24).

8. A flue gas waste heat recovery and reuse boiler for an oilfield combined station according to claim 6, characterized in that: The heat exchange sleeve (18) is provided with perforated baffles (19) that are fixedly connected to it at equal intervals, and the heat exchange sleeve (18) is provided with heat exchange plates (20) that are fixedly connected to it at equal intervals and interleaved with the perforated baffles (19).

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