CN109611827B - Temperature self-regulating flameless combustion device - Google Patents
Temperature self-regulating flameless combustion device Download PDFInfo
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- CN109611827B CN109611827B CN201811463512.6A CN201811463512A CN109611827B CN 109611827 B CN109611827 B CN 109611827B CN 201811463512 A CN201811463512 A CN 201811463512A CN 109611827 B CN109611827 B CN 109611827B
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- temperature
- flameless combustion
- reaction zone
- furnace
- furnace body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
- F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/02—Combustion apparatus using liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/04—Combustion apparatus using gaseous fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/06—Combustion apparatus using pulverized fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention discloses a temperature self-regulating flameless combustion device, which comprises a shell, a heat-insulating layer and a furnace pipe, wherein the furnace pipe is sequentially divided into a first reaction zone and a second reaction zone from outside to inside, a plurality of flameless combustion pipes are uniformly distributed at intervals at the edge of the first reaction zone, a first medium is filled in the first reaction zone, the center of the first reaction zone is provided with the second reaction zone, the second reaction zone comprises a heat-conducting pipe, a second medium is filled in the heat-conducting pipe, and the center of the heat-conducting pipe is also provided with a natural gas heating pipeline; a first temperature acquisition unit and a second temperature acquisition unit are respectively arranged in the first reaction zone and the second reaction zone. The invention can control the flow control valve of the fuel mixing area, the amount of flameless combustion and the heat conduction amount of double medium heat radiation, thereby avoiding the influence of instantaneous high temperature on reactants and simultaneously finely adjusting the temperature.
Description
Technical Field
The invention relates to the field of flameless combustion devices, in particular to a temperature self-regulating flameless combustion device.
Background
The flameless combustion technology is a novel low-pollution combustion technology, an obvious flame surface cannot appear during combustion, a large amount of heat is generated during combustion, and polluted gas cannot be generated and released after combustion. Particularly, the existing methanol flameless combustion method has the advantages that the methanol is connected with the catalyst to generate a large amount of heat, the whole process is simple and quick, and a new direction is provided for industrial development.
The existing flameless combustion cannot control the temperature of the flameless combustion due to rapid reaction and rapid heat release, and particularly provides a safer mode for the flameless combustion when natural gas or petroleum compounds are heated, but the reaction temperature of heating cannot be freely controlled due to rapid temperature rise.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a temperature self-adjusting flameless combustion device, solves the problems that the traditional flameless combustion generates a large amount of heat and cannot control the temperature in the reaction process, and can avoid the influence of instantaneous high temperature on reactants by controlling a flow control valve of a fuel mixing area, controlling the amount of flameless combustion and double medium heat radiation heat conduction heat, and can also finely adjust the temperature.
The purpose of the invention is realized by the following technical scheme:
a temperature self-regulating flameless combustion device comprising:
the furnace body is of a horizontal furnace body structure, a fuel mixing zone is arranged on one side surface of the furnace body, a fuel input pipe and an air input pipe are arranged on the side surface of the fuel mixing zone, the other side of the fuel mixing zone is communicated with a plurality of flameless combustion pipes arranged in the furnace body, and flow control valves are respectively arranged on the fuel input pipe and the air input pipe; the furnace body comprises a shell, a heat insulation layer and a furnace pipe, the furnace pipe is sequentially divided into a first reaction zone and a second reaction zone from outside to inside, a plurality of flameless combustion tubes are uniformly distributed at the edge of the first reaction zone at intervals, a first medium is filled in the first reaction zone, the second reaction zone is arranged in the center of the first reaction zone, the second reaction zone comprises a heat conduction tube, a second medium is filled in the heat conduction tube, and a natural gas heating pipeline is also arranged in the center of the heat conduction tube; the first reaction zone and the second reaction zone are respectively provided with a first temperature acquisition unit and a second temperature acquisition unit, the furnace body is also provided with a temperature control unit, and the temperature control unit is respectively connected with the first temperature acquisition unit, the second temperature acquisition unit and the flow control valve.
It should be noted that, a first reaction zone and a second reaction zone are adopted, and two reaction zones are used for conducting heat in a radiation mode, so that the influence of instantaneous high temperature on a natural gas heating pipeline is avoided. And after the temperature of the first medium is increased, heat is conducted to the second medium, so that the natural gas heating pipeline in the second medium is heated.
The utility model provides a two medium heat conduction not only avoid high temperature in the twinkling of an eye to cause the influence to the reactant on establishing the basis of flameless reaction a large amount of heats of releasing rapidly for natural gas heating pipeline is heated slowly through two medium dilution heat of high temperature in the twinkling of an eye again.
It should be further noted that the flameless combustion in the present application includes a process in which methanol, ethanol, coal powder or coal gas, etc. are uniformly mixed with air in a closed tube, and flameless combustion occurs through a catalyst and releases a large amount of radiant heat.
Preferably, the temperature control unit comprises a central controller which controls the reaction intensity in the flameless combustion tube by adjusting the flow control valve, and thereby adjusts the temperature of the second medium in the second reaction zone so that the temperature of the second medium is within a preset temperature range.
Preferably, the furnace body is also provided with a pressure monitoring device, so that the pressure in the furnace pipe can be acquired in real time, and the safety and the reliability are improved.
Preferably, an alarm device is further arranged outside the furnace body and used for alarming temperature abnormity.
Preferably, the outer wall of the flameless combustion tube is provided with a cross-shaped heat conducting fin, so that the heat conducting area is increased, and heat can be rapidly conducted.
Preferably, the first temperature acquisition unit and the second temperature acquisition unit are respectively composed of a multipoint temperature acquisition device.
Preferably, the furnace body comprises shell, heat preservation and stove courage, and the stove courage intussuseption is filled with first medium, and stove courage outward flange is arranged to have the cross section to arrange into annular first flameless combustion tube group, and the radial central authorities of stove courage still are provided with and arrange into circular shape second flameless combustion tube group, are provided with the natural gas heating pipe between first flameless combustion tube group and the second flameless combustion tube group, and natural gas heating pipe one side is provided with a plurality of temperature sensor.
Preferably, the first flameless combustion tube group and the second flameless combustion tube group are respectively connected with a fuel mixing zone arranged on the shell through a flow control device.
Preferably, the housing is further provided with an exhaust device connected with the tail ends of the first flameless combustion tube group and the second flameless combustion tube group.
Preferably, the exhaust device is provided with a tail gas monitoring device.
The invention has the beneficial effects that:
(1) the natural gas heating device is provided with a first reaction area and a second reaction area, and a plurality of flameless combustion tubes are arranged at the edge of the first reaction area, so that the influence of a large amount of heat generated in the moment of flameless reaction on reactants is avoided, and the heat is conducted through radiation of a plurality of media, so that a natural gas heating pipeline is slowly heated;
(2) the temperature information of the first reaction zone and the second reaction zone can be obtained in real time, and the fuel of the flameless reaction is regulated and controlled according to the real-time temperature information so as to realize the temperature control of the flameless reaction;
(3) the multi-point temperature acquisition device is arranged, so that the temperature information of a plurality of positions in the furnace can be acquired in real time, and the acquisition of a temperature radiation range and a temperature conduction speed is facilitated, so that the fine regulation and control of the temperature are realized;
(4) the alarm device and the pressure monitoring device are arranged, and the safety of flameless reaction is improved.
Drawings
FIG. 1 is a schematic view of the furnace structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the furnace according to the present invention;
FIG. 3 is a schematic structural diagram according to embodiment 3 of the present invention;
FIG. 4 is a schematic cross-sectional view showing the structure of example 5 of the present invention;
in the figure, 101-shell, 102-insulating layer, 103-furnace, 104-fuel mixing zone, 105-fuel input pipe, 106-air input pipe, 107-flow control valve, 108-exhaust device, 109-first medium, 110-flameless combustion pipe, 111-second medium, 112-natural gas heating pipe, 113-second temperature acquisition unit, 114-first temperature acquisition unit, 115-temperature sensor, 116-second flameless combustion pipe group, 117-first flameless combustion pipe group, 118-heat pipe, 119-cross-shaped heat conduction sheet.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
Example 1:
a temperature self-regulating flameless combustion device, as shown in figures 1 and 2, comprising:
the furnace body is of a horizontal furnace body structure, a fuel mixing zone 104 is arranged on one side surface of the furnace body, a fuel input pipe 105 and an air input pipe 106 are arranged on the side surface of the fuel mixing zone 104, the other side of the fuel mixing zone 104 is communicated with a plurality of flameless combustion pipes 110 arranged in the furnace body, and flow control valves 107 are respectively arranged on the fuel input pipe 105 and the air input pipe 106; the furnace body comprises a shell 101, an insulating layer 102 and a furnace pipe 103, the furnace pipe 103 is sequentially divided into a first reaction zone and a second reaction zone from outside to inside, a plurality of flameless combustion tubes 110 are uniformly distributed at intervals on the edge of the first reaction zone, a first medium 109 is filled in the first reaction zone, the center of the first reaction zone is provided with the second reaction zone, the second reaction zone comprises a heat conduction tube 118, a second medium 111 is filled in the heat conduction tube 118, and the center of the heat conduction tube 118 is also provided with a natural gas heating pipeline 112; a first temperature acquisition unit 114 and a second temperature acquisition unit 113 are respectively arranged in the first reaction zone and the second reaction zone, a temperature control unit is also arranged outside the furnace body, and the temperature control unit is respectively connected with the first temperature acquisition unit 114, the second temperature acquisition unit 113 and the flow control valve 107.
Further, an exhaust device 108 is arranged on the furnace body, and the exhaust device 108 is connected with the tail end of the flameless combustion tube 110.
It should be noted that, the first reaction zone and the second reaction zone are adopted, and two reaction zones are used for conducting heat in a radiation manner, so that the influence of instantaneous high temperature on a natural gas heating pipeline is avoided, when the flameless combustion tube 110 starts to work, the first medium 109 is firstly influenced, the temperature of the first medium 109 is rapidly raised, at this time, the first temperature acquisition unit 114 feeds the acquired temperature back to the temperature control unit in real time, and when the temperature of the first medium 109 reaches a first preset reaction temperature threshold value, the flow control valve is adjusted, so that the fuel entering the flameless combustion tube is reduced, the reaction intensity of flameless combustion is reduced, and the effect of controlling the temperature is achieved. When the temperature of the first medium 109 increases, heat is conducted to the second medium 111, so that the natural gas heating pipeline 112 in the second medium 111 is heated.
The double-medium heat conduction of the embodiment is based on the establishment of a large amount of heat released rapidly by the flameless reaction of methanol, thereby not only avoiding the influence of instantaneous high temperature on reactants, but also diluting the heat of instantaneous high temperature through double media, and leading the natural gas heating pipeline to be heated slowly.
Example 2:
this embodiment still is provided with pressure monitoring device on embodiment 1's the basis on the furnace body, and pressure monitoring device can acquire the pressure information in the stove courage in real time, avoids appearing the abnormal reaction condition, is favorable to strengthening the security of reaction.
Example 3:
in this embodiment, on the basis of embodiment 1, please refer to fig. 3, the cross-shaped heat conducting strip 119 is disposed on the outer wall of the flameless combustion tube 110, the cross-shaped heat conducting strip 119 increases the conducting area, and in the working process of the flameless combustion tube 110, a large amount of heat is instantaneously released, and the heat can be radiated and transferred to the surroundings through the heat conducting strip, so that the heat transfer effect is enhanced.
Example 4:
in this embodiment, on the basis of embodiment 1, please refer to fig. 2, the first temperature collecting unit 114 and the second temperature collecting unit 113 are respectively formed by a multi-point temperature collecting device. Because the heat transfer generated by the flameless reaction is transmitted from the near end to the far end in a radiation mode, the temperatures of different positions are different, and the real-time temperatures of different positions and the temperature changes of different positions need to be mastered at the moment, so that the temperature transfer rate is mastered. The amount of flameless reaction is controlled by adjusting the flow control valve, so that the temperature regulation and control are realized.
Example 5:
a flameless combustion device with self-regulated temperature, as shown in fig. 4, comprising:
the furnace body is of a horizontal furnace body structure, a fuel mixing zone 104 is arranged on one side surface of the furnace body, a fuel input pipe 105 and an air input pipe 106 are arranged on the side surface of the fuel mixing zone 104, the other side of the fuel mixing zone 104 is communicated with a plurality of flameless combustion pipes 110 arranged in the furnace body, and flow control valves 107 are respectively arranged on the fuel input pipe 105 and the air input pipe 106; the furnace body comprises a shell 101, a heat insulating layer 102 and a furnace pipe 103, a first medium 109 is filled in the furnace pipe 103, a first flameless combustion pipe group 117 with an annular cross section is arranged at the outer edge of the furnace pipe 103, a second flameless combustion pipe group 116 which is arranged in a circular shape is further arranged at the radial center of the furnace pipe 103, a natural gas heating pipeline 112 is arranged between the first flameless combustion pipe group 117 and the second flameless combustion pipe group 116, a plurality of temperature sensors 115 are arranged on one side of the natural gas heating pipeline 112, an exhaust device 108 which is connected with the tail ends of the first flameless combustion pipe group 117 and the second flameless combustion pipe group 116 is further arranged on the shell, and a tail gas monitoring device is arranged on the exhaust device 108.
In this embodiment, an interlayer heat conduction manner is adopted, and flameless combustion tube sets are respectively disposed at the center of the furnace 103 and the edge of the furnace 103, so that heat of the flameless combustion tube sets is transferred to the first medium 109, and the natural gas heating pipe 112 is heated by the first medium 109. The mode of this embodiment is not only safe convenient, and can not discharge gaseous pollutants, can control reaction temperature, reinforcing thermal reaction effect.
It needs to be further explained that, the application solves the problems that the traditional methanol flameless combustion generates a large amount of heat, the temperature in the reaction process cannot be controlled, the amount of flameless combustion can be controlled 107 by controlling the flow control valve of the fuel mixing area 104, and the heat is conducted by dual medium thermal radiation, so that the influence of instantaneous high temperature on reactants is avoided, and meanwhile, the temperature can be finely adjusted.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A temperature self-regulating flameless combustion device, comprising:
the furnace body is of a horizontal furnace body structure, a fuel mixing zone is arranged on one side surface of the furnace body, a fuel input pipe and an air input pipe are arranged on the side surface of the fuel mixing zone, the other side of the fuel mixing zone is communicated with a plurality of flameless combustion pipes arranged in the furnace body, and flow control valves are respectively arranged on the fuel input pipe and the air input pipe; the furnace body comprises a shell, a heat insulation layer and a furnace pipe, the furnace pipe is sequentially divided into a first reaction zone and a second reaction zone from outside to inside, a plurality of flameless combustion tubes are uniformly distributed at the edge of the first reaction zone at intervals, a first medium is filled in the first reaction zone, the second reaction zone is arranged in the center of the first reaction zone, the second reaction zone comprises a heat conduction tube, a second medium is filled in the heat conduction tube, and a natural gas heating pipeline is also arranged in the center of the heat conduction tube; a first temperature acquisition unit and a second temperature acquisition unit are respectively arranged in the first reaction zone and the second reaction zone, a temperature control unit is also arranged outside the furnace body, and the temperature control unit is respectively connected with the first temperature acquisition unit, the second temperature acquisition unit and the flow control valve; the temperature control unit comprises a central controller, and the central controller controls the reaction intensity in the flameless combustion tube by adjusting the flow control valve, and adjusts the temperature of the second medium in the second reaction zone so that the temperature of the second medium is in a preset temperature range.
2. The temperature self-regulating flameless combustion device of claim 1 wherein the furnace body is further provided with a pressure monitoring device.
3. The flameless combustion device with the function of self-regulation of temperature according to claim 1, wherein an alarm device is further arranged outside the furnace body and used for alarming temperature abnormity.
4. The temperature self-regulating flameless combustion device of claim 1 wherein the outer wall of the flameless combustion tube is provided with a cross-shaped heat conducting fin.
5. The temperature-self-regulating flameless combustion device according to claim 1, wherein the first temperature collecting unit and the second temperature collecting unit are each constituted by a multipoint temperature collecting device.
6. The flameless combustion device with the self-regulation temperature as claimed in claim 1, wherein the furnace body is composed of a shell, an insulating layer and a furnace, a first medium is filled in the furnace, a first flameless combustion tube group with an annular cross section is arranged on the outer edge of the furnace, a second flameless combustion tube group which is arranged in a circular shape is further arranged in the radial center of the furnace, a natural gas heating pipeline is arranged between the first flameless combustion tube group and the second flameless combustion tube group, and a plurality of temperature sensors are arranged on one side of the natural gas heating pipeline.
7. The temperature self-regulating flameless combustion device of claim 6 wherein the first and second flameless combustion tube sets are each connected to a fuel mixing zone disposed on the housing by flow control means.
8. The flameless combustion device with self-regulation of temperature according to claim 6, wherein the housing further comprises an exhaust means connected to the ends of the first and second flameless combustion tube groups.
9. A temperature self-regulating flameless combustion device in accordance with claim 6 or 8 wherein the exhaust means is provided with exhaust gas monitoring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811463512.6A CN109611827B (en) | 2018-12-03 | 2018-12-03 | Temperature self-regulating flameless combustion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811463512.6A CN109611827B (en) | 2018-12-03 | 2018-12-03 | Temperature self-regulating flameless combustion device |
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| CN109611827A CN109611827A (en) | 2019-04-12 |
| CN109611827B true CN109611827B (en) | 2020-08-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100061445A (en) * | 2007-07-20 | 2010-06-07 | 셀 인터나쵸나아레 레사아치 마아츠샤피 비이부이 | A flameless combustion heater |
| JP5538023B2 (en) * | 2010-03-29 | 2014-07-02 | 東洋エンジニアリング株式会社 | Reactor |
| CN103808161B (en) * | 2014-01-28 | 2016-04-20 | 浙江大学 | A kind of automatic entrance-exit the grey sintering atmosphere stove of on-line monitoring and method of work thereof |
| CN106732315B (en) * | 2016-12-27 | 2022-06-21 | 扬州惠通科技股份有限公司 | Drum heating and stirring device |
| CN207628136U (en) * | 2017-11-22 | 2018-07-20 | 宜兴市压力容器厂有限公司 | Natural gas purification water scrubber |
| CN207716416U (en) * | 2017-12-13 | 2018-08-10 | 中冶京诚(扬州)冶金科技产业有限公司 | The continous way Self-heat-storage flameless burner of the double preheatings of air/gas |
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