CN221217725U - Internal combustion type carbonization furnace equipment - Google Patents
Internal combustion type carbonization furnace equipment Download PDFInfo
- Publication number
- CN221217725U CN221217725U CN202322564353.1U CN202322564353U CN221217725U CN 221217725 U CN221217725 U CN 221217725U CN 202322564353 U CN202322564353 U CN 202322564353U CN 221217725 U CN221217725 U CN 221217725U
- Authority
- CN
- China
- Prior art keywords
- carbonization furnace
- internal combustion
- carbonization
- heat exchange
- exchange device
- 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.)
- Active
Links
- 238000003763 carbonization Methods 0.000 title claims abstract description 186
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000003345 natural gas Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 19
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract description 5
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model discloses internal combustion type carbonization furnace equipment, which comprises a first carbonization furnace, a second carbonization furnace, a cooling kettle and a heat exchange device; the first carbonization furnace, the second carbonization furnace and the cooling kettle are sequentially communicated; controlling the temperature difference of the first carbonization furnace and the second carbonization furnace through a PLC controller; the first carbonization furnace and the second carbonization furnace are internally provided with nozzles, and the nozzles are used for conveying natural gas; the first carbonization furnace, the second carbonization furnace and the heat exchange device are communicated through an air pipe. In the technical scheme, the mode of generating heat energy by natural gas combustion is used, so that the temperature in the furnace reaches 1100 degrees, and the carbonization efficiency of materials is improved; by setting the temperature difference of the first carbonization furnace and the second carbonization furnace, the gradual heating and continuous heating of different temperature sections of the materials can be realized, and the better temperature control of the materials can be realized; through setting up tuber pipe and heat transfer device, make the waste gas in the equipment cyclic utilization to energy consumption minimizes.
Description
Technical Field
The utility model relates to the technical field of carbonization furnaces, in particular to internal combustion type carbonization furnace equipment.
Background
In industrial production, often need carry out carbonization to the material, carbonization generally uses the carbonization stove, traditional carbonization stove's heating method, adopts resistance area heating, uses the resistance area to twine, utilizes the two-sided fever of resistance area, reaches the purpose of heating, and this kind of heating method has the shortcoming that the heat loss is big, and in addition, in the use, because the temperature is higher, the resistance area is easy ageing, and the life of resistance area is short, often changes the resistance area, and equipment maintenance volume also becomes big. Therefore, the heating mode using the resistor tape in the prior art has the technical defects of high energy consumption and easy aging of the resistor tape.
Disclosure of utility model
The utility model aims to provide internal combustion type carbonization furnace equipment, and aims to solve the technical defects that a carbonization furnace in the prior art adopts a resistance belt to heat, and the resistance belt is high in energy consumption and easy to age.
To achieve the purpose, the utility model adopts the following technical scheme:
The utility model discloses internal combustion type carbonization furnace equipment, which comprises a first carbonization furnace, a second carbonization furnace, a cooling kettle and a heat exchange device; the discharge port of the first carbonization furnace is communicated with the feed port of the second carbonization furnace, and the discharge port of the second carbonization furnace is communicated with the feed port of the cooling kettle; a programmable logic controller (Programmable Logic Controller, PLC) is connected to the carbonization furnace equipment and used for controlling the temperature difference between the first carbonization furnace and the second carbonization furnace; the first carbonization furnace and the second carbonization furnace are internally provided with nozzles, and the nozzles are used for conveying natural gas; the first carbonization furnace, the second carbonization furnace and the heat exchange device are communicated through an air pipe.
The first carbonization furnace is internally provided with a first roller, the second carbonization furnace is internally provided with a second roller, the first roller is connected with the second roller through a bearing, the bearing is provided with a chain wheel and a chain, and the chain is connected with a driving mechanism.
And a plurality of air inlets are further formed in the side walls of the first carbonization furnace and the second carbonization furnace.
The air pipes comprise a first air pipe, a second air pipe and a third air pipe, an air pipeline is arranged on the heat exchange device, the first air pipe is communicated with the first carbonization furnace and the heat exchange device, and the second air pipe is communicated with the second carbonization furnace and the heat exchange device; the third air pipe is communicated with the first carbonization furnace and the second carbonization furnace.
Specifically, the heat exchange device is also connected with a fan.
Specifically, the feed inlet of first carbide stove is connected with first screw feeding mechanism, the discharge gate of second carbide stove is connected with second screw feeding mechanism.
Specifically, the internal combustion type carbonization furnace equipment further comprises a support frame, wherein the support frame is respectively arranged at the bottoms of the first spiral feeding mechanism, the first carbonization furnace, the second carbonization furnace and the cooling kettle and used for supporting the whole carbonization furnace equipment.
Preferably, the support frame is a steel structure support frame.
Preferably, an operation platform is further arranged beside the first spiral feeding mechanism.
Preferably, the first carbonization furnace and the second carbonization furnace are arranged in parallel, and the cooling kettle and the second carbonization furnace are arranged vertically.
The internal combustion carbonization furnace equipment disclosed by the technical scheme comprises a first carbonization furnace, a second carbonization furnace, a cooling kettle and a heat exchange device; the discharge port of the first carbonization furnace is communicated with the feed port of the second carbonization furnace, and the discharge port of the second carbonization furnace is communicated with the feed port of the cooling kettle; the first carbonization furnace and the second carbonization furnace have different temperatures; the first carbonization furnace and the second carbonization furnace are internally provided with nozzles, and the nozzles are used for conveying natural gas; the first carbonization furnace, the second carbonization furnace and the heat exchange device are communicated through an air pipe. In the technical scheme, the mode of using natural gas for combustion to generate heat energy replaces the mode of using a resistance belt for heating in the prior art, so that the temperature in the furnace can reach 1100 degrees, the energy consumption is effectively reduced, and the carbonization efficiency of materials is improved; the PLC is used for controlling the temperature difference of the first carbonization furnace and the second carbonization furnace, so that the gradual heating and continuous heating of different temperature sections of materials can be realized, and the better temperature control of the materials can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of an internal combustion type carbonization furnace apparatus according to an embodiment of the present utility model;
FIG. 2 is a diagram showing the structure of a junction between a first carbonization furnace and a second carbonization furnace according to an embodiment of the present utility model;
FIG. 3 is a diagram illustrating a heat exchange device and a connection structure between adjacent components according to an embodiment of the present utility model;
Fig. 4 is a connection structure diagram of a first screw feeding mechanism and adjacent components according to an embodiment of the present utility model.
Wherein: 1. a first carbonization furnace; 2. a second carbonization furnace; 21. a bearing; 22. a sprocket; 23. a chain; 24. a first driving mechanism; 3. cooling the kettle; 4. a first screw feeding mechanism; 41. a feeding device; 42. a second driving mechanism; 5. a second spiral feeding mechanism; 6. a heat exchange device; 61. a blower; 7. a support frame; 71. an operating platform; 81. a first air duct; 82. a second air duct; 83. a third air duct; 84. an air duct;
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In describing the present utility model, it should be noted that the terms "center", "upper", "lower", "left", etc. are used to describe the present utility model,
The orientation or positional relationship indicated by "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and to simplify the description, and does not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The utility model discloses an internal combustion type carbonization furnace device, which is shown in figures 1-4 and comprises a first carbonization furnace 1, a second carbonization furnace 2, a cooling kettle 3 and a heat exchange device 6; the discharge port of the first carbonization furnace 1 is communicated with the feed port of the second carbonization furnace 2, and the discharge port of the second carbonization furnace 2 is communicated with the feed port of the cooling kettle 3; the temperature of the first carbonization furnace 1 is different from that of the second carbonization furnace 2, a PLC (programmable logic controller) is connected to carbonization furnace equipment and used for controlling the temperatures of the first carbonization furnace 1 and the second carbonization furnace 2, and automatic constant temperature control is carried out through a proportional-integral-derivative controller (Proportion Integration Differentiation, PID) in the temperature rising and falling process, so that the temperature deviation is within a range of +/-5 ℃. In this embodiment, the set temperature of the second carbonization furnace 2 is higher than the set temperature of the first carbonization furnace 1, and the materials are gradually heated and continuously heated through different temperature sections of the first carbonization furnace 1 and the second carbonization furnace 2, so that better temperature control of the materials can be realized, and the required products can be better prepared; the first carbonization furnace 1 and the second carbonization furnace 2 are respectively provided with a plurality of nozzles 12, the nozzles 12 are communicated with the inner space of the first carbonization furnace 1 and the inner space of the second carbonization furnace 2, the nozzles 12 are used for conveying natural gas, heat is provided for the first carbonization furnace 1 and the second carbonization furnace 2 through the combustion of the natural gas, materials in the furnace react, the first carbonization furnace 1, the second carbonization furnace 2 and the heat exchange device 6 are communicated through air pipes, valves for opening and closing are arranged on the air pipes, the first carbonization furnace 1 and the second carbonization furnace 2 are also internally provided with burners, specifically, the burners are arranged on the left side and the right side of the inner part of the first carbonization furnace 1 and the second carbonization furnace 2, the layout of the burners in the first carbonization furnace 1 and the second carbonization furnace 2 is the same, a forced air supply sub-high speed burner and a secondary air burner are mainly adopted, and electric control ignition is carried out through an automatic igniter, wherein the forced air supply sub-high speed burner mainly provides heat energy for the combustion of the natural gas, and the secondary air burner mainly provides heat energy for the combustion of tail gas generated in the production.
Specifically, a first roller is arranged in the first carbonization furnace 1, a second roller is arranged in the second carbonization furnace 2, the nozzles are respectively communicated with the first roller and the second roller, and natural gas is conveyed into the first roller and the second roller through the nozzles; the first roller is connected with the second roller through a bearing 21, a chain wheel 22 and a chain 23 are arranged on the bearing 21, the chain 23 is connected with a first driving mechanism 24, and during operation, the first driving mechanism 24 operates to drive the chain 23 and the chain wheel 22 to operate and drive the first roller and the second roller to rotate respectively through the bearing 21.
Specifically, the side walls of the first carbonization furnace 1 and the second carbonization furnace 2 are further provided with a plurality of air openings 11 for connecting the air pipes so as to realize communication with the heat exchange device 6.
The air pipes comprise a first air pipe 81, a second air pipe 82 and a third air pipe 83, an air pipeline 84 is arranged on the heat exchange device 6, the first air pipe 81 is communicated with the first carbonization furnace 1 and the heat exchange device 6, the second air pipe 82 is communicated with the second carbonization furnace 2 and the heat exchange device 6, waste gas generated by burning natural gas in the first carbonization furnace 1 and the second carbonization furnace 2 enters the heat exchange device 6 through the first air pipe 81, the heat exchange device 6 burns the waste gas again through the air pipeline 84 and the fan 61, and heat generated in the burning process returns to the inside of the second carbonization furnace 2 through the second air pipe 82 so as to supplement heat energy in the second carbonization furnace 2; the third air pipe 83 is communicated with the first carbonization furnace 1, the second carbonization furnace 2 and the heat exchange device 6, in the second carbonization furnace 2, smoke is generated by heating and burning, the smoke enters the first carbonization furnace 1 through the third air pipe 83, heat energy required by burning in the first carbonization furnace 1 can be supplemented, and redundant gas flows into the heat exchange device 6 for circulation.
Wherein, the heat exchange device 6 is also connected with a fan 61 for providing wind power for the heat exchange device 6.
Wherein, the feed inlet of first carbonization stove 1 is connected with first screw feeding mechanism 4, the discharge gate of second carbonization stove 2 is connected with second screw feeding mechanism 5.
The carbonization furnace equipment further comprises a support frame 7, wherein the support frame 7 is respectively arranged at the bottoms of the first spiral feeding mechanism 4, the first carbonization furnace 1, the second carbonization furnace 2, the second spiral feeding mechanism 5 and the cooling kettle 3 and used for supporting the whole carbonization furnace equipment.
Further, the support frame 7 is a steel structure support frame, the support frame 7 is formed by constructing and welding steel structures, and the construction is simple, convenient and stable.
The side of the first spiral feeding mechanism 4 is also provided with an operation platform 71, and a worker stands on the operation platform 71 to overhaul or operate the first spiral feeding mechanism 4.
Further, the first screw feeding mechanism 4 is further provided with a feeding device 41 and a second driving mechanism 42, the feeding device 41 is used for feeding the first screw feeding mechanism 4, and the second driving mechanism 42 is used for driving the first screw feeding mechanism 4 to work.
The first carbonization furnace 1 and the second carbonization furnace 2 are arranged in parallel, the cooling kettle 3 and the second carbonization furnace 2 are arranged vertically, and the arrangement can reduce the occupied area of carbonization furnace equipment.
In the specific embodiment, the first driving mechanism 24 and the second driving mechanism 42 are respectively started, materials to be treated sequentially enter the first carbonization furnace 1 and the second carbonization furnace 2 through the first spiral feeding mechanism 4, the nozzle 12 is started to enable natural gas to enter the first carbonization furnace 1 and the second carbonization furnace 2, the burner is started to ignite, the first roller and the second roller rotate to enable the materials to be fully mixed and carbonized, the temperature in the first carbonization furnace 1 is lower than the temperature in the second carbonization furnace 2, the materials are overturned in the first roller to advance and enter the second roller, the materials can be preheated and then subjected to high-temperature reaction, the materials are gradually heated up and continuously heated through different temperature sections, and better temperature control can be realized and required products can be obtained; in the process, valves of the first air pipe 81, the second air pipe 82, the third air pipe 83 and the air pipeline 84 are synchronously opened, and the fan 61 is opened, so that the gas in the first carbonization furnace 1 and the second carbonization furnace 2 and the gas in the heat exchange device 6 circulate, the cyclic utilization is realized, and the energy consumption is the lowest; the fully reacted material enters a second spiral feeding mechanism 5 from a second roller and then enters a cooling kettle 3 for cooling.
The internal combustion carbonization furnace equipment disclosed by the technical scheme comprises a first carbonization furnace, a second carbonization furnace, a cooling kettle and a heat exchange device; the discharge port of the first carbonization furnace is communicated with the feed port of the second carbonization furnace, and the discharge port of the second carbonization furnace is communicated with the feed port of the cooling kettle; controlling the temperature difference of the first carbonization furnace and the second carbonization furnace through a PLC controller; the first carbonization furnace and the second carbonization furnace are internally provided with nozzles, and the nozzles are used for conveying natural gas; the first carbonization furnace, the second carbonization furnace and the heat exchange device are communicated through an air pipe. In the technical scheme, the mode of using natural gas for combustion to generate heat energy replaces the mode of using a resistance belt for heating in the prior art, so that the temperature in the furnace can reach 1100 degrees, the energy consumption is effectively reduced, and the carbonization efficiency of materials is improved; by setting the temperature difference of the first carbonization furnace and the second carbonization furnace, the gradual heating and continuous heating of different temperature sections of the materials can be realized, and the better temperature control of the materials can be realized; moreover, through setting up tuber pipe and heat transfer device, the waste gas that produces in the heating process can get into heat transfer device and burn once more, and the heat energy that waste gas burns once more and produce still can flow back to the furnace body in supplementary heat, and this kind of circulation can reach the cyclic utilization of energy to make energy consumption minimize.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. The internal combustion type carbonization furnace equipment is characterized by comprising a first carbonization furnace, a second carbonization furnace, a cooling kettle and a heat exchange device;
The discharge port of the first carbonization furnace is communicated with the feed port of the second carbonization furnace, and the discharge port of the second carbonization furnace is communicated with the feed port of the cooling kettle;
The carbonization furnace equipment is connected with a PLC (programmable logic controller) for controlling the temperature difference of the first carbonization furnace and the second carbonization furnace;
The first carbonization furnace and the second carbonization furnace are internally provided with nozzles, and the nozzles are used for conveying natural gas;
the first carbonization furnace, the second carbonization furnace and the heat exchange device are communicated through an air pipe.
2. The internal combustion type carbonization furnace equipment according to claim 1, wherein a first roller is arranged in the first carbonization furnace, a second roller is arranged in the second carbonization furnace, the first roller and the second roller are connected through a bearing, a chain wheel and a chain are arranged on the bearing, and the chain is connected with a driving mechanism.
3. The internal combustion type carbonization furnace apparatus according to claim 1, wherein a plurality of tuyeres are further provided on the side walls of the first carbonization furnace and the second carbonization furnace.
4. The internal combustion carbonization furnace equipment according to claim 2, wherein the air pipes comprise a first air pipe, a second air pipe and a third air pipe, an air pipeline is arranged on the heat exchange device, the first air pipe is communicated with the first carbonization furnace and the heat exchange device, and the second air pipe is communicated with the second carbonization furnace and the heat exchange device; the third air pipe is communicated with the first carbonization furnace and the second carbonization furnace.
5. The internal combustion carbonization furnace equipment according to claim 1, wherein the heat exchange device is further connected with a fan.
6. The internal combustion type carbonization furnace equipment according to claim 1, wherein the feed inlet of the first carbonization furnace is connected with a first spiral feeding mechanism, and the discharge outlet of the second carbonization furnace is connected with a second spiral feeding mechanism.
7. The internal combustion type carbonization furnace equipment according to claim 6, further comprising a supporting frame, wherein the supporting frame is respectively arranged at the bottoms of the first spiral feeding mechanism, the first carbonization furnace, the second spiral feeding mechanism and the cooling kettle and used for supporting the whole carbonization furnace equipment.
8. The internal combustion carbonization furnace apparatus according to claim 7, wherein the support frame is a steel structure support frame.
9. The internal combustion carbonization furnace device according to claim 6, wherein an operation platform is further arranged beside the first spiral feeding mechanism.
10. The internal combustion type carbonization furnace equipment according to claim 1, wherein the first carbonization furnace and the second carbonization furnace are arranged in parallel, and the cooling kettle is arranged perpendicular to the second carbonization furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322564353.1U CN221217725U (en) | 2023-09-21 | 2023-09-21 | Internal combustion type carbonization furnace equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322564353.1U CN221217725U (en) | 2023-09-21 | 2023-09-21 | Internal combustion type carbonization furnace equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221217725U true CN221217725U (en) | 2024-06-25 |
Family
ID=91566941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322564353.1U Active CN221217725U (en) | 2023-09-21 | 2023-09-21 | Internal combustion type carbonization furnace equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221217725U (en) |
-
2023
- 2023-09-21 CN CN202322564353.1U patent/CN221217725U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101762154B (en) | Energy-saving ceramic tunnel kiln | |
| CN104456560B (en) | Porous media radiant tube | |
| CN105202912A (en) | Gas roller way kiln | |
| CN107166960A (en) | A kind of energy saving and environment friendly leaching modeling heating furnace | |
| CN104832922A (en) | Heat storage gas heating device and heat storage gas heating method | |
| CN202350509U (en) | Natural gas non-flame catalytic combustion kiln with near zero pollutant emission | |
| CN221217725U (en) | Internal combustion type carbonization furnace equipment | |
| CN101915502A (en) | Method for regulating oxygen atmosphere in fuel oil (gas) reverberatory furnace by using recovered fume | |
| CN113340099A (en) | Gas-electric hybrid heating roller kiln for producing lithium battery material | |
| CN105858649B (en) | Graphite high temperature puffing stove | |
| CN114562815B (en) | Preheating vortex control oxygen type hot-blast stove | |
| CN205192225U (en) | Gas roll table kiln | |
| CN202717587U (en) | Full-automatic high-temperature activating oven | |
| CN106048183B (en) | A kind of biomass electricity Dual-energy source heat-treatment furnace | |
| CN204739584U (en) | Gaseous heating device of heat accumulation formula | |
| CN211886767U (en) | Hot air circulation heating utilization system of reaction kettle body | |
| CN211005489U (en) | Boat pushing type tempering heating furnace for gas heating front shaft tempering production line | |
| CN211091553U (en) | Secondary heat exchange type tunnel furnace | |
| CN101597057B (en) | Method for producing active carbon by core class charring material | |
| CN201193237Y (en) | Tunnel type heat treating furnace for sucker rod heated by natural gas | |
| CN202002461U (en) | Fuel reverberatory furnace preparing oxygen atmosphere inside combustion chamber by recovered flue gas | |
| CN106348578A (en) | Forced-convection fuel gas toughening furnace | |
| CN2392769Y (en) | Open-flame tunnel type foaming kiln for sintering foam glass | |
| CN110157870A (en) | Bell-type annealing device with heat recovery function | |
| CN206755898U (en) | A kind of aluminium material spiral pushing preheating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |