CN116255621A

CN116255621A - Petroleum heating boiler burner

Info

Publication number: CN116255621A
Application number: CN202310297450.0A
Authority: CN
Inventors: 王伟
Original assignee: Daqing Brilliant Energy Saving Technology Co ltd
Current assignee: Daqing Brilliant Energy Saving Technology Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-06-13

Abstract

The invention discloses a petroleum heating boiler burner.A main gas pipeline is connected with an annular gas distribution chamber through a plurality of gas pipelines, combustion heads are uniformly distributed on the circumference of the front end of the annular gas distribution chamber, and the main gas pipeline and the annular gas distribution chamber are arranged in an air duct; the air duct is internally provided with the cyclone, so that the air distribution forms rotary air in the air duct; a wind stabilizer is arranged in the middle of the annularly distributed combustion heads and is fixed at the front end of the main gas pipeline. The front end of the combustion head is provided with a round table, a plurality of damping flame spray holes are uniformly distributed on the round table, and a position relative damping baffle ring is arranged in front of the damping flame spray holes. The burner provided by the invention has the advantages of full combustion, improved combustion efficiency and reduced pollution emission. The heat efficiency of the burner can reach more than 90 percent, compared with the prior art, the energy is saved by more than 25 percent, the oxygen content concentration in the boiler flue gas is 1.5 to 2.0 percent, the nitrogen oxide content per cubic meter is less than 50 milligrams, and each emission index is superior to the prior art.

Description

Petroleum heating boiler burner

Technical Field

The invention relates to a boiler burner, in particular to a petroleum heating boiler burner.

Background

The oil heating boiler is a large industrial device in oil field, the structure of the industrial boiler is a water jacket type, the heat is provided by the burner in the cylinder cavity, and the oil boiler is generally provided with two burners. The hot water generated by the oil heating boiler is used for mixing water into oil; and secondly, the device is used for 'flushing' to remove paraffin attached to the well wall. The burner is the core of the petroleum heating boiler, each petroleum boiler burner has dozens of gas spray holes, and the combustion state of the burner determines important indexes such as the thermal efficiency, environmental protection emission and the like of the boiler. The burner of the existing petroleum heating boiler comprises a main gas pipeline, the main gas pipeline is connected with a gas distribution chamber through a plurality of branch gas pipelines, gas spray holes are arranged in front of the gas distribution chamber, and flames are sprayed out of the gas spray holes. The burner has simple structure, adopts natural air distribution, has poor air distribution stability, and different air pressure, air direction and air speed of dozens of combustion spray holes, causes combustion confusion and insufficient combustion, so that the thermal efficiency of the burner is low by about 45 percent, the thermal efficiency of a boiler is low, the oxygen content concentration in the flue gas discharged by the boiler is 10-20 percent, and the nitrogen oxide content is up to 180-200 milligrams per cubic meter.

Disclosure of Invention

In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a petroleum heating boiler burner that overcomes the above-described drawbacks.

The invention provides a petroleum heating boiler burner, which comprises a main gas pipeline, wherein the main gas pipeline is connected with an annular gas distribution chamber through a plurality of gas pipelines, the front end of the annular gas distribution chamber is provided with a combustion head, the combustion heads are uniformly distributed on the circumference of the front end of the annular gas distribution chamber, the main gas pipeline and the annular gas distribution chamber are arranged in an air cylinder, the rear end of the air cylinder is communicated with a fan, an ignition gun with an ion detection needle is arranged in the air cylinder, and the petroleum heating boiler burner is characterized in that a cyclone capable of rotating air distribution is arranged in the air cylinder, and an air stabilizer capable of stabilizing the rotating air more uniformly is arranged in the middle of the annularly distributed combustion heads, and is fixed at the front end of the main gas pipeline.

Preferably, the cyclone has a cylindrical structure, a cylinder wall is formed by a plurality of upright fins, and the cross sections of the fins and the circumference of the cylinder form acute angle tangential lines so that the air distribution moves forwards in the rotating direction formed by the air cylinder; the structure of the wind stabilizer is that a plurality of vertical blades with inclined angles are uniformly distributed on a circular tube.

Preferably, the off-combustion high-speed combustion head is in a straight tube shape, the tube cavity is a mixed gas channel, the rear end of the tube cavity is provided with an air inlet hole and a gas nozzle, the front end of the tube cavity is provided with a round table, the round table is provided with a plurality of damping flame spray holes communicated with the mixed gas channel, the top end of the combustion head is positioned in front of the damping flame spray holes, and a position relative damping baffle ring is arranged on the top end of the combustion head.

Preferably, the main gas pipeline is communicated with an annular gas distribution chamber through four branch gas pipelines, the rear end of the air duct is communicated with a fan, the fan is installed in a fan chamber, the lower end of the fan chamber is communicated with a smoke return pipe for introducing smoke into the fan, the air inlet of the fan chamber is arranged in the vertical direction, a rotating baffle plate controlled by a motor is installed at the air inlet, an ultraviolet flame monitor is installed on the air duct for monitoring whether flame burns normally or not, the air duct is controlled through signal feedback, and a gas pressure monitor is installed on the main gas pipeline.

Compared with the prior art, the invention has the beneficial effects that:

the petroleum heating boiler burner provided by the invention has the advantages that the combustion is complete, the combustion efficiency is improved, and the pollution emission is reduced. Through tests, the thermal efficiency of the hot gas of the burner can reach more than 90%, compared with the prior art, the energy is saved by more than 25%, the boiler emission index is obviously optimized, the oxygen content concentration in the flue gas is 1.5-2.0%, the nitrogen oxide content per cubic meter is less than 50 milligrams, and each emission index is better than the prior art. The invention can generate great social and economic benefits if being popularized and used in oil fields in China.

It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

FIG. 1 is a front view of a petroleum heating boiler burner;

FIG. 2 is a top view of a petroleum heating boiler burner;

FIG. 3 is a cross-sectional view of a combustion head;

FIG. 4 is a cross-sectional view of a cyclone;

FIG. 5 is a front view of a cyclone;

reference numerals in the drawings: 1. a main gas pipeline; 2. a branch gas pipeline; 3. an annular gas distribution chamber; 4. a combustion head; 5. an air duct; 6. a blower; 7. an ion detection needle; 8. igniting the gun; 9. a cyclone; 10. a fin; 11. a wind stabilizer; 12. a blade; 13. an ultraviolet flame monitor; 14. a gas pressure detector; 15. a smoke return pipe; 16. a lower tuyere; 17. an upper air port; 18. a gas nozzle; 19. an air inlet of the combustion head; 20. damping flame ports; 21. a damping baffle ring; 22. a main flame port; 23. cyclone positioning bolts; 24. a cyclone upper flange; 25. cyclone lower flange.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 5, the embodiment of the invention provides a burner for a petroleum heating boiler, wherein a wind barrel 5 is made of steel plates, a main gas pipeline 1 is fixed in the wind barrel 5, the main gas pipeline 1 is communicated with an annular gas distribution chamber 3 through four branch gas pipelines 2, a combustion head 4 is uniformly distributed on the circumference of the front end of the annular gas distribution chamber 3, the rear end of the wind barrel 5 is communicated with a fan 6, a burning torch 8 with an ion detection needle 7 is arranged on the inner side of the combustion head 4 in the wind barrel 5, and the burning torch 8 provides long-term open flame at the same time. The cyclone 9 is composed of a cyclone positioning bolt 23, a cyclone upper flange 24 and a cyclone lower flange 25, wherein a plurality of fins 10 are fixed on the periphery of the flange, the fins 10 are distributed on the periphery of the flange to form a cylinder wall shape, and an acute angle formed by the cross section of each fin 10 and the periphery of the cylinder is 20 degrees, so that the air distribution moves forwards in the rotary wind direction formed by the air cylinder 5; the middle of the annularly distributed combustion head 4 is provided with a wind stabilizer 11 which is fixed at the front end of the main gas pipeline, the wind stabilizer 11 is in a structure that a plurality of vertical blades (12) with inclined angles are uniformly distributed on a circular pipe along the axial direction, and the inclined angles are 25 degrees, so that on one hand, the wind distribution provided for the combustion head 4 is more uniform and stable, and on the other hand, the flame is rotated and combusted, and the combustion is more sufficient. The combustion head 4 is of a separate combustion high-speed combustion structure and is in a straight tube shape, a tube cavity of the combustion head is a mixed gas channel, a combustion head air inlet 19 and a gas nozzle 18 are arranged at the rear end of the combustion head, a round table is arranged at the front end of the combustion head, a plurality of damping flame spray holes 20 communicated with the mixed gas channel are uniformly distributed on the round table, the diameter of each damping flame spray hole 20 is 1 mm, the damping flame spray holes are processed by adopting a three-D printing technology, and a damping baffle ring 21 corresponding to the positions of the damping flame spray holes 20 is arranged in front of the damping flame spray holes 20 at the top end of the combustion head. In this embodiment, 30 combustion heads 4 are mounted on the circumference of the front end of the annular gas distribution chamber 3. The fan 6 is installed in a fan room, and a flue gas reflux pipe 15 is used for introducing the flue gas into the fan room to fan room lower extreme intercommunication, and the air intake of fan room sets up in the upper and lower direction, and the rotation baffle of motor control is installed to the air intake. An ultraviolet flame monitor 13 is arranged at the rear end of the air duct 5 and is used for monitoring flame combustion conditions, and the air distribution quantity is adjusted through signal feedback. The burner takes oilfield petroleum associated gas as fuel, the pressure of the burner fluctuates, and a fuel gas pressure monitor 14 is arranged on a fuel gas main pipeline 1.

The working process and principle of the invention are as follows:

according to the invention, natural wind and boiler flue gas are sent into the wind barrel 5 by the fan 6, the cyclone 9 changes the direction of the wind to generate consistent rotation and then the wind is sent to the wind stabilizer 11, and the wind stabilizer 11 again rotates and evenly sends the wind to the combustion heads 4, so that the air distribution of the same air quantity, the same wind pressure and the same wind direction is obtained by each combustion head 4, and the combustion states of the combustion heads 4 are consistent. The small amount of fuel gas sprayed out of the damping flame spray holes 20 is blocked by the damping baffle ring 21 to reduce the flame speed, and the fuel gas is divergently matched with the combustion of the high-speed flame of the main flame spray holes 22 of the combustion head 4, so that a flame source for stable combustion is provided for the high-speed main flame, the problem that the flame spraying speed of the high-speed main flame is higher than the combustion speed is solved, the occurrence of 'no-holding' accidents is avoided, and the combustion safety is ensured. The burner head of the present invention has a high velocity flame exiting the flame ports 22 and is therefore referred to as a lean burn high velocity burner head. The introduction of the flue gas into the air distribution firstly can reduce the oxygen content in the air distribution, and is beneficial to the reduction of nitrogen oxides; and secondly, the temperature of air distribution can be increased, and the combustion effect is improved. The invention is provided with a flame ion detection needle 7, an ultraviolet flame detector 13, a fuel gas pressure detector 14 and an electronic control system, and the combustion condition is controlled by feeding back an electronic signal, so that the stable combustion of the burner is ensured.

In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a petroleum heating boiler combustor, including a main gas pipeline (1), main gas pipeline (1) connects an annular gas distribution room (3) through a plurality of gas pipeline (2), combustion head (4) are installed to annular gas distribution room (3) front end, combustion head (4) even distribution is on the circumference of annular gas distribution room (3) front end, install in a dryer (5) at main gas pipeline (1) and annular gas distribution room (3), a fan (6) are linked together to dryer (5) rear end, an ignition rifle (8) with ion detection needle (7) is installed in dryer (5), a serial communication port is provided with one in dryer (5) and can make the air distribution produce rotatory cyclone (9), have one in the middle of annular distributed combustion head (4) and make rotatory wind more even stable wind stabilizer (11), wind stabilizer (11) are fixed in main gas pipeline (1) front end, combustion head (4) are for leaving high-speed combustion head.

2. A burner for a petroleum heating boiler according to claim 1, characterized in that said cyclone (9) is of a cylindrical configuration, the cylindrical wall being constituted by a plurality of upright fins (10), the cross section of said fins (10) forming an acute angle tangent with the circumference of the cylinder, so that the air distribution moves in front of the rotation of the air duct (9); the structure of the wind stabilizer (11) is that a plurality of vertical blades (12) with inclined angles are uniformly distributed on a round tube.

3. A burner for a petroleum heating boiler according to claim 1 or 2, characterized in that said off-burner high speed burner is a straight tube, the lumen of which is a mixed gas channel, the rear end of which is provided with an air inlet (19) and a gas nozzle (18), the front end of which is provided with a circular table, the circular table is provided with a plurality of damping flame spray holes (20) which are uniformly distributed and are communicated with the mixed gas channel, and a relative damping baffle ring (21) is arranged at the top end of the burner (4) and positioned in front of said damping flame spray holes (20).

4. The oil heating boiler burner according to claim 1, wherein the main gas pipeline (1) is communicated with an annular gas distribution chamber (3) through four branch gas pipelines, the rear end of the air drum (5) is communicated with a fan (6), the fan (6) is installed in a fan chamber, the lower end of the fan chamber is communicated with a smoke return pipe (15) for introducing smoke into the fan (6), the air inlet of the fan chamber is arranged in the vertical direction, the air inlet is provided with a motor-controlled rotating baffle plate, the air drum (5) is provided with an ultraviolet flame monitor (13) for monitoring whether flame burns normally or not, the control is performed through signal feedback, and the main gas pipeline (1) is provided with a gas pressure monitor (14).