CN116642199A - Kiln knocking ignition device and kiln - Google Patents
Kiln knocking ignition device and kiln Download PDFInfo
- Publication number
- CN116642199A CN116642199A CN202310430700.3A CN202310430700A CN116642199A CN 116642199 A CN116642199 A CN 116642199A CN 202310430700 A CN202310430700 A CN 202310430700A CN 116642199 A CN116642199 A CN 116642199A
- Authority
- CN
- China
- Prior art keywords
- kiln
- ignition device
- combustion chamber
- combustion
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 78
- 239000000446 fuel Substances 0.000 claims abstract description 53
- 238000005474 detonation Methods 0.000 claims abstract description 24
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 239000007800 oxidant agent Substances 0.000 claims description 13
- 230000001590 oxidative effect Effects 0.000 claims description 13
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
- F23Q13/02—Igniters not otherwise provided for using gas burners, e.g. gas pokers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/004—Fuel quantity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The application provides a kiln knocking ignition device and a kiln, wherein the kiln knocking ignition device comprises: an ignition device upper housing having an upper combustion chamber; the lower shell of the ignition device is provided with a lower combustion chamber, the upper end of the lower shell of the ignition device is connected with the lower end of the upper shell of the ignition device, and the upper combustion chamber and the lower combustion chamber are communicated with each other and are surrounded to form a combustion chamber; the fuel supply assembly is arranged at the upper end of the upper shell of the ignition device and is used for supplying fuel and combustion improver into the combustion cavity; the igniter is arranged on the upper shell or the lower shell of the ignition device and is connected with the combustion chamber. According to the embodiment of the application, the fuel and the combustion improver are provided by the fuel supply assembly, the igniter performs low-energy detonation ignition on the fuel and the combustion improver, and high-energy flame flow is formed in the combustion cavity, so that the purposes of improving the ignition efficiency and reducing the energy consumption are achieved.
Description
Technical Field
The application relates to the technical field of kiln ignition devices, in particular to a kiln knocking ignition device and a kiln.
Background
The utility model discloses a kiln ignition for publication No. CN213686912U, publication date is published in China patent application of 2021-07-13, belongs to kiln accessory technical field, including the furnace body, furnace body top fixedly connected with mounting bracket, threaded hole is seted up at the mounting bracket top, the mounting bracket is connected with the screw rod through the screw hole cooperation, screw rod bottom fixedly connected with link, the jack socket has been seted up to link bottom horizontal direction, the link can dismantle through the jack socket and be connected with the igniter, and it is after the ignition is accomplished, twists the screw rod along the threaded hole of seting up at the mounting bracket top for the screw rod moves up, and its bottom drives the link and moves up and take the igniter out inside the furnace body, avoids the igniter to be in the high temperature environment for a long time, plays the guard action, reduces the loss, when needs to fire, only need reverse screw rod that moves down to drive the link, can insert the igniter inside the furnace body and use, and is nimble in use, and it is convenient to adjust.
Disadvantages of the prior art:
when the kiln is ignited, preheating is generally needed, then the temperature is raised to the working temperature by ignition, the gas supply quantity is changed from small to large, a long time is needed, and the temperature change is avoided as much as possible in the working state. When the kiln needs to be ignited, workers are required to operate beside the kiln. However, since the time required from ignition to temperature rise to the working temperature is long, a worker needs to operate at the kiln for a long time, which wastes manpower.
Moreover, at present, ceramic products are mostly fired by adopting a gas kiln. The kiln is usually ignited by an electric igniter, the electric ignition system uses a storage battery to supply power, and when the kiln is ignited, large current is required to be absorbed into the storage battery, so that the ignition time is often prolonged, the ignition is unsuccessful, and the service life of the storage battery is also shortened. In addition, the storage batteries of the existing kiln ignition system are charged through mains supply to store energy, and the storage batteries are easy to cause insufficient power when the power environment is poor, so that the kiln cannot ignite.
Disclosure of Invention
In view of this, the embodiment of the present disclosure provides a kiln detonation ignition device and a kiln, so as to achieve the purposes of improving ignition efficiency and reducing energy consumption.
The embodiment of the specification provides the following technical scheme: a kiln detonation ignition device comprising: an ignition device upper housing having an upper combustion chamber; the lower shell of the ignition device is provided with a lower combustion chamber, the upper end of the lower shell of the ignition device is connected with the lower end of the upper shell of the ignition device, and the upper combustion chamber and the lower combustion chamber are communicated with each other and are surrounded to form a combustion chamber; the fuel supply assembly is arranged at the upper end of the upper shell of the ignition device and is used for supplying fuel and combustion improver into the combustion cavity; the igniter is arranged on the upper shell or the lower shell of the ignition device and is connected with the combustion chamber.
Further, the kiln knocking ignition device also comprises a high-temperature resistant guide pipe, one end of the high-temperature resistant guide pipe is connected with the lower end of the lower shell of the ignition device and is communicated with the combustion chamber, and the other end of the high-temperature resistant guide pipe is arranged on the outer side of the lower shell of the ignition device.
Further, the fuel supply assembly comprises a fuel inlet pipe, a pressure stabilizing cavity and an oxidant inlet pipe which are arranged at the upper end of the upper shell of the ignition device, wherein the fuel inlet pipe is communicated with the combustion cavity, the axis of the fuel inlet pipe is collinear with the axis of the upper shell of the ignition device, the oxidant inlet pipe is communicated with the inlet of the pressure stabilizing cavity, and the outlet of the pressure stabilizing cavity is communicated with the combustion cavity.
Further, the fuel supply assembly further comprises a fuel nozzle fixedly arranged at the outlet end of the fuel inlet pipe and connected with the upper combustion chamber.
Further, the kiln knocking ignition device further comprises a mounting seat, the mounting seat is connected with the lower shell of the ignition device, and the other end of the high-temperature-resistant guide pipe can penetrate through the mounting seat and be placed outside the mounting seat.
Further, the upper combustion chamber comprises an upper conical section and an upper constant diameter section, the fuel supply assembly is arranged at the small diameter end of the upper conical section, and the upper end of the upper constant diameter section is connected with the large diameter end of the upper conical section.
Further, the lower combustion chamber comprises a lower conical section and a lower equal-diameter section, the upper end of the lower equal-diameter section is connected with the lower end of the upper equal-diameter section, and the large-diameter end of the lower conical section is connected with the lower end of the lower equal-diameter section.
The embodiment of the application also provides a kiln, which comprises the kiln detonation ignition device, wherein the kiln detonation ignition device is the kiln detonation ignition device.
Further, the kiln includes a kiln body having a kiln chamber wall and an interior cavity, and a kiln detonation ignition device is disposed on the kiln chamber wall and is capable of introducing a flame into the interior cavity.
Further, the kiln also comprises a temperature sensor and a flame sensor, wherein the temperature sensor and the flame sensor are arranged on the wall of the kiln chamber.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least: according to the embodiment of the application, the fuel and the combustion improver are provided by the fuel supply assembly, the igniter performs low-energy detonation ignition on the fuel and the combustion improver, and high-energy flame flow is formed in the combustion cavity, so that the purposes of improving the ignition efficiency and reducing the energy consumption are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a kiln knock ignition in an embodiment of the present application;
FIG. 2 is a schematic diagram of a front view of a kiln detonation ignition device in accordance with an embodiment of the present application;
fig. 3 is a schematic view of the structure of the kiln according to the embodiment of the application.
Reference numerals in the drawings: 1. a kiln main body; 2. kiln knocking ignition device; 201. a pressure stabilizing cavity; 202. an upper combustion chamber; 203. a lower combustion chamber; 204. a mounting base; 205. a high temperature resistant conduit; 206. a fuel nozzle; 207. an igniter; 208. an oxidant inlet pipe; 3. a temperature sensor; 4. a flame sensor.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, an embodiment of the present application provides a kiln detonation ignition device including an ignition device upper housing, an ignition device lower housing, a fuel supply assembly, and an igniter 207. The ignition device upper housing has an upper combustion chamber 202; the lower shell of the ignition device is provided with a lower combustion chamber 203, the upper end of the lower shell of the ignition device is connected with the lower end of the upper shell of the ignition device, and the upper combustion chamber 202 and the lower combustion chamber 203 are communicated with each other and are surrounded to form a combustion chamber; the fuel supply assembly is arranged at the upper end of the upper shell of the ignition device and is used for providing fuel and combustion improver into the combustion chamber; an igniter 207 is provided on the ignition upper housing or the ignition lower housing, and the igniter 207 is connected to the combustion chamber.
According to the embodiment of the application, the fuel and the combustion improver are provided by the fuel supply assembly, the igniter 207 performs low-energy detonation ignition on the fuel and the combustion improver, and high-energy flame flow is formed in the combustion cavity, so that the purposes of improving ignition efficiency and reducing energy consumption are achieved.
It should be noted that the detonation combustion is characterized by a shock wave structure upstream of the combustion zone, where shock waves are coupled to propagate together, and the propagation speed of flame of the detonation combustion is much higher than that of the slow combustion, and can reach thousands of meters per second. Knocking ignition is an ignition technology utilizing knocking combustion, and is characterized in that: the detonation wave can be continuously transmitted along the circumferential direction of the combustion chamber only by one-time successful detonation; the combustion speed is high, the heat release intensity is high, the combustion chamber structure is compact, and the ignition structure length can be shortened.
Further, the kiln knocking ignition device further comprises a high-temperature resistant guide pipe 205, one end of the high-temperature resistant guide pipe 205 is connected with the lower end of the lower shell of the ignition device and is communicated with the combustion chamber, and the other end of the high-temperature resistant guide pipe 205 is arranged on the outer side of the lower shell of the ignition device. In the embodiment of the application, the high-temperature resistant conduit 205 is made of tungsten-copper alloy, the melting point of the tungsten-copper alloy is 3410 ℃, and the high-temperature resistant conduit can work for a long time at the temperature of 1000-2000K, so that the high-temperature resistant conduit 205 made of tungsten-copper alloy can withstand long-time ignition and can withstand the temperature of about 1500K during ignition.
Specifically, the fuel supply assembly comprises a fuel inlet pipe, a pressure stabilizing cavity 201 and an oxidant inlet pipe 208, wherein the fuel inlet pipe, the pressure stabilizing cavity 201 and the oxidant inlet pipe are arranged at the upper end of the upper shell of the ignition device, the fuel inlet pipe is communicated with the combustion cavity, the axis of the fuel inlet pipe is collinear with the axis of the upper shell of the ignition device, the oxidant inlet pipe 208 is communicated with the inlet of the pressure stabilizing cavity 201, and the outlet of the pressure stabilizing cavity 201 is communicated with the combustion cavity.
In the embodiment of the application, light fuel (generally acetylene, hydrogen, natural gas, methane, propane, coke oven gas, liquefied gas and the like) enters a combustion chamber (precisely an upper combustion chamber 202) through a fuel air inlet pipe, oxidant (oxygen or oxygen-enriched air and the like) firstly enters a pressure stabilizing chamber 201 through an oxidant air inlet pipe 208, then enters the combustion chamber through small holes uniformly distributed in the pressure stabilizing chamber 201 to be mixed with the light fuel, and then forms high-energy flame under the action of an igniter 207. Due to the higher flame temperature, the pressure in the combustion chamber increases rapidly, causing the high energy flame to pass through the refractory duct 205 to the underside.
It should be noted that, the fuel intake pipe also has a pressure stabilizing space, and the ratio of the oxidant to the light fuel can be adjusted by changing the sizes of the pressure stabilizing space and the pressure stabilizing cavity 201, so as to change the energy of the flame flow.
Further, the fuel supply assembly also includes a fuel nozzle 206 fixedly disposed at an outlet end of the fuel inlet pipe and coupled to the upper combustion chamber 202. The fuel nozzle 206 is capable of providing a suitable pressure and entry point for light fuel, thereby ensuring a good injection angle.
As shown in fig. 1, the kiln knocking ignition device further comprises a mounting seat 204, wherein the mounting seat 204 is connected with the lower shell of the ignition device, and the other end of the high-temperature resistant conduit 205 can pass through the mounting seat 204 and be arranged outside the mounting seat 204. The mounting seat 204 is used for mounting the kiln knocking ignition device to a set position so as to ensure the assembly stability of the whole device.
The mounting base 204, the lower ignition device housing, and the upper ignition device housing are all connected to each other by flanges.
Preferably, the upper combustion chamber 202 includes an upper conical section and an upper constant diameter section, the fuel supply assembly being disposed at a small diameter end of the upper conical section, the upper end of the upper constant diameter section being connected to a large diameter end of the upper conical section. The lower combustion chamber 203 includes a lower tapered section and a lower constant diameter section, the upper end of the lower constant diameter section being connected to the lower end of the upper constant diameter section, the large diameter end of the lower tapered section being connected to the lower end of the lower constant diameter section.
By arranging the upper conical section, the spraying pressure of the fuel and the oxidant can be reduced, so that the fuel and the oxidant are quickly diffused and mixed. By arranging the upper and lower constant diameter sections connected to each other, the space of the combustion chamber can be ensured to be maximized, and the formation of high-energy flame can be ensured. The high-energy flame can be rapidly ejected through the lower conical section, so that the high-efficiency ignition effect of a device connected with the kiln knocking ignition device is ensured.
As shown in fig. 3, the embodiment of the application further provides a kiln, which comprises the kiln detonation ignition device 2, wherein the kiln comprises a kiln main body 1, the kiln main body 1 is provided with a kiln cavity wall and an inner cavity, and the kiln detonation ignition device 2 is arranged on the kiln cavity wall and can introduce flame into the inner cavity.
The embodiment of the application can form high-energy flame flow under the ignition of the small-energy igniter 207, the high-energy flame flow enters the kiln main body 1 for ignition, the energy is stable and efficient, and the kiln main body can be retracted without the completion of ignition.
Further, the kiln also comprises a temperature sensor 3 and a flame sensor 4, wherein the temperature sensor 3 and the flame sensor 4 are arranged on the wall of the kiln chamber.
The kiln main body 1 is provided with the temperature sensor 3 and the flame sensor 4 which can monitor the combustion condition in the kiln main body 1, and the kiln knocking ignition device 2 is arranged to ignite again through the master controller when unstable combustion occurs.
The foregoing description of the embodiments of the application is not intended to limit the scope of the application, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the application shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (10)
1. A kiln detonation ignition device, comprising:
an ignition device upper housing having an upper combustion chamber (202);
the ignition device comprises an ignition device lower shell, a lower combustion chamber (203), a lower combustion chamber (202) and a lower combustion chamber (203), wherein the upper end of the ignition device lower shell is connected with the lower end of the ignition device upper shell, and the upper combustion chamber and the lower combustion chamber (203) are communicated with each other and are surrounded to form a combustion cavity;
the fuel supply assembly is arranged at the upper end of the upper shell of the ignition device and is used for supplying fuel and combustion improver into the combustion cavity;
and the igniter (207) is arranged on the upper shell or the lower shell of the ignition device, and the igniter (207) is connected with the combustion cavity.
2. The kiln detonation ignition device of claim 1, further comprising a high temperature resistant conduit (205) connected at one end to the lower end of the ignition device lower housing and communicating with the combustion chamber, the other end of the high temperature resistant conduit (205) being disposed outside of the ignition device lower housing.
3. The kiln knock ignition device of claim 2, wherein the fuel supply assembly includes a fuel inlet pipe, a pressure stabilizing chamber (201) and an oxidant inlet pipe (208) disposed at an upper end of the upper housing of the ignition device, the fuel inlet pipe being in communication with the combustion chamber and an axis of the fuel inlet pipe being collinear with an axis of the upper housing of the ignition device, the oxidant inlet pipe (208) being in communication with an inlet of the pressure stabilizing chamber (201), an outlet of the pressure stabilizing chamber (201) being in communication with the combustion chamber.
4. A kiln knock ignition device according to claim 3, characterized in that the fuel supply assembly further comprises a fuel nozzle (206) fixedly arranged at the outlet end of the fuel inlet pipe and connected to the upper combustion chamber (202).
5. A kiln knock ignition device according to claim 3, characterized in that it further comprises a mounting seat (204) connected to the lower casing of the ignition device, and the other end of the high temperature resistant conduit (205) can pass through the mounting seat (204) and be placed outside the mounting seat (204).
6. The kiln detonation ignition device of claim 1 wherein the upper combustion chamber (202) comprises an upper conical section and an upper constant diameter section, the fuel supply assembly being disposed at a small diameter end of the upper conical section, an upper end of the upper constant diameter section being connected to a large diameter end of the upper conical section.
7. The kiln knock ignition device according to claim 6, characterized in that the lower combustion chamber (203) comprises a lower conical section and a lower constant diameter section, an upper end of the lower constant diameter section being connected to a lower end of the upper constant diameter section, a large diameter end of the lower conical section being connected to a lower end of the lower constant diameter section.
8. A kiln comprising a kiln detonation ignition device, characterized in that the kiln detonation ignition device is a kiln detonation ignition device according to any of claims 1 to 7.
9. Kiln according to claim 8, characterized in that the kiln comprises a kiln body (1), the kiln body (1) having a kiln chamber wall and an inner cavity, the kiln detonation ignition device being arranged on the kiln chamber wall and being capable of introducing a flame into the inner cavity.
10. Kiln according to claim 9, characterized in that the kiln further comprises a temperature sensor (3) and a flame sensor (4), both the temperature sensor (3) and the flame sensor (4) being arranged on the kiln chamber wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310430700.3A CN116642199A (en) | 2023-04-19 | 2023-04-19 | Kiln knocking ignition device and kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310430700.3A CN116642199A (en) | 2023-04-19 | 2023-04-19 | Kiln knocking ignition device and kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116642199A true CN116642199A (en) | 2023-08-25 |
Family
ID=87614253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310430700.3A Pending CN116642199A (en) | 2023-04-19 | 2023-04-19 | Kiln knocking ignition device and kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116642199A (en) |
-
2023
- 2023-04-19 CN CN202310430700.3A patent/CN116642199A/en active Pending
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