CN214745702U - Oxyhydrogen ignition device of pulverized coal boiler - Google Patents
Oxyhydrogen ignition device of pulverized coal boiler Download PDFInfo
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- CN214745702U CN214745702U CN202121231529.6U CN202121231529U CN214745702U CN 214745702 U CN214745702 U CN 214745702U CN 202121231529 U CN202121231529 U CN 202121231529U CN 214745702 U CN214745702 U CN 214745702U
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- oxyhydrogen
- burner
- ignition
- slide rail
- oxyhydrogen gas
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Abstract
The utility model discloses a oxyhydrogen ignition device of a pulverized coal boiler, which comprises an air-coal passage (1), a burner (2), an oxyhydrogen generator (3), a flame arrester (4), an oxyhydrogen gas inlet pipeline (5), a burner (6) and a PLC (programmable logic controller) controller (7), wherein the burner (2) is arranged in the center of the horizontal section of the air-coal passage (1), the tail end of the burner (2) is fixedly connected with the burner (6), the oxyhydrogen gas inlet pipeline (5) penetrates from the head end of the burner (2), the flame arrester (4) is arranged at the connection part of the oxyhydrogen gas inlet pipeline and the burner (2), the top end of the inner wall of the burner (2) is provided with an ignition gun (22), and the bottom end of the inner wall is provided with a flame detector (24); the utility model discloses utilize oxyhydrogen gas's combustion temperature height, the combustion-supporting characteristic of catalysis, the fuel consume that meets when can effectively solve pulverized coal boiler start-up ignition and low-load operation is big, start frequently, the emission exceeds standard, the ignition life-span is short, can not continuous operation scheduling problem.
Description
Technical Field
The utility model relates to a coal fired boiler ignition especially relates to a pulverized coal fired boiler's oxyhydrogen gas ignition.
Background
In recent years, China has set a series of policies for treating pollution problems of thermal power plants successively. Therefore, for the thermal power plant, measures for energy conservation and consumption reduction are taken, and the coal combustion efficiency is inevitably improved. Research and development shows that the amount of fuel required by the generator set of the thermal power plant during each starting operation is often large, the continuous rising of the coal-fired price is not beneficial to the sustainable development of the thermal power plant, the load of the generator set is different between day and night, the generator set of the thermal power plant has to be started and stopped frequently, the fuel loss of the thermal generator set during starting is increased, the fuel is not sufficiently combusted during starting of the thermal generator set, and the environmental pollution is greatly influenced. In order to solve the problems, the main ignition technologies adopted at present comprise tiny-oil ignition and plasma ignition, but both the two methods have certain disadvantages. The tiny-oil ignition technology is used for preventing unburned oil drops from polluting dust removing equipment, and the dust removing equipment is stopped during the period, so that the atmospheric environment is polluted; plasma ignition is oil-free ignition, but the service life of a cathode and an anode is short, and the start and the operation of a boiler are influenced by electrode replacement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art not enough, the utility model is to provide a pulverized coal boiler's oxyhydrogen ignition, the combustion temperature that utilizes oxyhydrogen is high, the combustion-supporting characteristic of catalysis, and the fuel consume that meets when can effectively solve pulverized coal boiler start-up ignition and low-load operation is big, start frequently, the emission exceeds standard, the ignition life-span is short, can not continuous operation scheduling problem.
The utility model discloses a following technical scheme realizes:
a oxyhydrogen ignition device of a pulverized coal boiler comprises an air coal channel, a burner, an oxyhydrogen generator, a flame arrester, an oxyhydrogen gas inlet pipeline and a PLC (programmable logic controller). The air coal passage is 90oThe circular-angle pipeline is coaxially provided with a burner in the center of a horizontal section; the combustor is cylindrical, the head end of the combustor penetrates out of the corner of the air-coal passage, and the tail end of the combustor is fixedly connected with a burner; the head end of the oxyhydrogen gas inlet pipeline is connected with the oxyhydrogen generator, the tail end of the oxyhydrogen gas inlet pipeline penetrates through the head end of the combustor and is coaxially arranged with the combustor, and a flame arrester is arranged at the joint of the oxyhydrogen gas inlet pipeline and the combustor; the top end of the inner wall of the combustor is fixedly provided with an ignition gun slide rail, an ignition gun is connected onto the ignition gun slide rail in a sliding manner, the bottom end of the inner wall of the combustor is fixedly provided with a detector slide rail, a flame detector is connected onto the detector slide rail in a sliding manner, and the ignition gun slide rail and the detector slide rail are both provided with electric control devices; and the PLC is electrically connected with the ignition gun slide rail and the detector slide rail respectively.
In the technical scheme, oxyhydrogen gas generated by the oxyhydrogen generator enters the combustor along the oxyhydrogen gas inlet pipeline through the flame arrester; an ignition gun and a flame detector are respectively arranged on the upper side and the lower side of a oxyhydrogen gas inlet pipeline in the combustor, and the ignition gun and the flame detector can respectively enter and exit in the combustor along an ignition gun slide rail and a detector slide rail according to requirements; when ignition is started, coal powder enters from a vertical section of the air-coal passage along with primary air, at the moment, under the control of a program of a PLC (programmable logic controller), an ignition gun slides to the edge of the tail end of a oxyhydrogen gas inlet pipeline and ignites, oxyhydrogen gas is ignited, a flame detector on the other side of the inlet pipeline detects a flame signal, the ignition gun automatically exits, then the flame detector exits and cools, oxyhydrogen gas flame is sprayed out from a burner, the combustion temperature of the oxyhydrogen gas flame is high, the combustion speed of the oxyhydrogen gas flame.
As the utility model discloses technical scheme's further optimization, the nozzle is the flaring structure, and its inside evenly is equipped with a plurality of orifices, enables oxyhydrogen flame along the nozzle to diffusion injection all around to increase flame combustion range.
As the further optimization of the technical proposal of the utility model, the oxyhydrogen generator is a water electrolyzer.
As the further optimization of the technical proposal of the utility model, the ignition gun is a high-energy ignition gun.
As the further optimization of the technical proposal of the utility model, a control valve is arranged between the flame arrester and the oxyhydrogen generator; as further optimization, the control valve is an electromagnetic valve and is electrically connected with the PLC controller, and the purpose of cooperatively controlling the introduction and ignition of oxyhydrogen is achieved.
To sum up, for prior art, the utility model discloses a oxyhydrogen gas ignition has following advantage:
(1) the ignition device has the advantages of simple structure, long service life and convenient later maintenance of equipment;
(2) fuel oil is not used in the whole ignition process, and dust removing equipment can be put into the ignition device to meet the environmental protection requirement at the initial starting stage;
(3) the introduction of oxyhydrogen, the ignition gun and the flame detector are controlled by a PLC (programmable logic controller) cooperative program, the automation degree is high, and the use is convenient;
(4) the oxyhydrogen flame has high temperature and high combustion speed, can ignite the coal powder instantly, releases more heat energy compared with the traditional ignition starting mode, and has high ignition efficiency and less coal consumption.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the oxyhydrogen ignition device according to the present invention;
FIG. 2 is a schematic structural diagram of a burner according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a flaring end face of a burner in an embodiment of the present invention;
in the figure: the device comprises a 1-air coal channel, a 2-burner, a 3-oxyhydrogen generator, a 4-flame arrester, a 5-oxyhydrogen gas inlet pipeline, a 6-burner, a 7-PLC controller, a 21-ignition gun slide rail, a 22-ignition gun, a 23-detector slide rail, a 24-flame detector, a 51-control valve and a 61-spray hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below with reference to embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1-3 show the embodiment of the oxyhydrogen gas ignition device of the pulverized coal boiler of the invention.
Example one
As shown in fig. 1-3, the oxyhydrogen ignition device of the pulverized coal boiler comprises an air-coal passage 1, a burner 2, an oxyhydrogen generator 3, a flame arrester 4, an oxyhydrogen gas inlet pipeline 5 and a PLC controller 7, wherein the air-coal passage 1 is 90oThe circular-angle pipeline is coaxially provided with a burner 2 in the center of the horizontal section; the combustor 2 is cylindrical, the head end of the combustor penetrates out of the corner of the air-coal passage 1, and the tail end of the combustor is fixedly connected with a burner 6; the head end of the oxyhydrogen gas inlet pipeline 5 is connected with the oxyhydrogen generator 3, the tail end of the oxyhydrogen gas inlet pipeline penetrates from the head end of the combustor 2 and is coaxially arranged with the combustor, and a flame arrester 4 is arranged at the joint of the oxyhydrogen gas inlet pipeline 5 and the combustor 2; an ignition gun slide rail 21 is fixedly arranged at the top end of the inner wall of the combustor 2, an ignition gun 22 is slidably connected onto the ignition gun slide rail, a detector slide rail 23 is fixedly arranged at the bottom end of the inner wall of the combustor 2, a flame detector 24 is slidably connected onto the detector slide rail, and both the ignition gun slide rail 21 and the detector slide rail 23 are provided with electric control devices; the PLC controller 7 is electrically connected with the ignition gun slide rail 21 and the detector slide rail 23 respectively.
In this embodiment, the burner 6 is a flaring structure, and 9 nozzle holes 61 are uniformly formed in the burner.
In this embodiment, the oxyhydrogen generator 3 is a water electrolyzer.
In this embodiment, the ignition gun 22 is a high energy ignition gun.
In this embodiment, a control valve 51 is provided between the flame arrester 4 and the oxyhydrogen generator 3.
Example two
This embodiment differs from the first embodiment in two ways:
firstly, the burner 6 is of a flaring structure, and 15 spray holes 61 are uniformly formed in the burner;
secondly, the control valve 51 between the flame arrester 4 and the oxyhydrogen generator 3 is an electromagnetic valve, and the PLC 7 is electrically connected with the control valve 51.
When the oxyhydrogen ignition device of the pulverized coal boiler is used, oxyhydrogen generated by the oxyhydrogen generator 3 enters the combustor 2 through the flame arrester 4 along the oxyhydrogen inlet pipeline 5; an ignition gun 22 and a flame detector 24 are respectively arranged at the upper side and the lower side of the oxyhydrogen gas inlet pipeline 5 in the combustor 2, and the ignition gun 22 and the flame detector can respectively enter and exit in the combustor 2 along an ignition gun slide rail 21 and a detector slide rail 23 according to requirements; when ignition is started, coal powder enters from the vertical section of the air-coal passage 1 along with primary air, at the moment, under the control of a program of the PLC 7, the ignition gun 22 slides to the edge of the tail end of the oxyhydrogen gas inlet pipeline 5 and ignites to ignite oxyhydrogen gas, at the moment, the flame detector 24 on the other side of the oxyhydrogen gas inlet pipeline 5 detects a flame signal, the ignition gun 22 automatically exits, then the flame detector 23 exits and cools, oxyhydrogen gas flame is sprayed out from the burner 6, the combustion temperature is high, the combustion speed is high, and the generated high-temperature environment can quickly ignite the contacted coal powder.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "inner", "top", "bottom", "end", "one side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Also, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and thus, for example, "connected" may be fixedly, detachably, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. that may be made by those skilled in the art without departing from the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (6)
1. The utility model provides a pulverized coal boiler's oxyhydrogen ignition, includes wind coal passageway (1), combustor (2), oxyhydrogen generator (3), spark arrester (4), oxyhydrogen admission line (5) and PLC controller (7), its characterized in that: the air coal passage (1) is 90oThe burner (2) is coaxially arranged in the center of the horizontal section of the air-coal passage (1), the burner (2) is cylindrical, the head end of the burner penetrates out of the corner of the air-coal passage (1), and the tail end of the burner is fixedly connected with a burner (6); the head end of the oxyhydrogen gas inlet pipeline (5) is connected with the oxyhydrogen generator (3), the tail end of the oxyhydrogen gas inlet pipeline penetrates through the head end of the combustor (2) and is coaxially arranged with the combustor, and a flame arrester (4) is arranged at the joint of the oxyhydrogen gas inlet pipeline (5) and the combustor (2); an ignition gun slide rail (21) is fixedly arranged at the top end of the inner wall of the combustor (2), an ignition gun (22) is connected onto the ignition gun slide rail in a sliding manner, a detector slide rail (23) is fixedly arranged at the bottom end of the inner wall of the combustor (2), a flame detector (24) is connected onto the detector slide rail in a sliding manner, and electric control devices are arranged on the ignition gun slide rail (21) and the detector slide rail (23); the PLC controller (7) is electrically connected with the ignition gun slide rail (21) and the detector slide rail (23) respectively.
2. Oxyhydrogen gas ignition device according to claim 1, characterized in that: the burner (6) is of a flaring structure, and a plurality of spray holes (61) are uniformly formed in the burner.
3. Oxyhydrogen gas ignition device according to claim 1, characterized in that: the oxyhydrogen generator (3) is a water electrolyzer.
4. Oxyhydrogen gas ignition device according to claim 1, characterized in that: the ignition gun (22) is a high-energy ignition gun.
5. Oxyhydrogen gas ignition device according to claim 1, characterized in that: a control valve (51) is arranged on a oxyhydrogen gas inlet pipeline (5) between the flame arrester (4) and the oxyhydrogen generator (3).
6. Oxyhydrogen gas ignition device according to claim 5, characterized in that: the control valve (51) is an electromagnetic valve, and the PLC (7) is electrically connected with the control valve (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121231529.6U CN214745702U (en) | 2021-06-03 | 2021-06-03 | Oxyhydrogen ignition device of pulverized coal boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121231529.6U CN214745702U (en) | 2021-06-03 | 2021-06-03 | Oxyhydrogen ignition device of pulverized coal boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214745702U true CN214745702U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121231529.6U Active CN214745702U (en) | 2021-06-03 | 2021-06-03 | Oxyhydrogen ignition device of pulverized coal boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214745702U (en) |
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2021
- 2021-06-03 CN CN202121231529.6U patent/CN214745702U/en active Active
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