CN210647724U - Efficient energy-saving gas thermal desorption equipment - Google Patents
Efficient energy-saving gas thermal desorption equipment Download PDFInfo
- Publication number
- CN210647724U CN210647724U CN201921249187.3U CN201921249187U CN210647724U CN 210647724 U CN210647724 U CN 210647724U CN 201921249187 U CN201921249187 U CN 201921249187U CN 210647724 U CN210647724 U CN 210647724U
- Authority
- CN
- China
- Prior art keywords
- gas
- combustion
- flue gas
- thermal desorption
- heat exchanger
- 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
Images
Landscapes
- Air Supply (AREA)
Abstract
The utility model provides a high-efficiency energy-saving gas thermal desorption device, a heating well is provided with an outer radiant tube and an inner tube which are mutually sleeved and form a backflow gap, and a heat exchanger is arranged above the inner tube; the burner is arranged above the heating well, the sprayed high-temperature flue gas can reach the bottom of the heating well through the inner pipe and is provided with a gas inlet, a combustion air and gas inlet and a smoke outlet, the gas inlet is connected with a gas station, the outer side of the combustion air inlet is communicated with a combustion fan, the inner side of the combustion air inlet is communicated with a combustion chamber of the burner through the heat exchanger, and the smoke outlet is connected with a smoke exhaust fan and used for discharging the flue gas at the top of the heating well; and a gap is reserved between the heat exchanger and the top of the inner pipe to form a flue gas return channel. The utility model discloses a flue gas return channel can make the burning more abundant, can reduce nitrogen oxide content in the flue gas to make the bulk temperature of heater well more even.
Description
Technical Field
The utility model relates to an in-situ thermal desorption device for repairing pollutants (such as polluted soil), in particular to a gas thermal desorption device.
Background
The gas thermal desorption technology is an important component of in-situ thermal desorption, and has the advantages of wide pollutant repairing types, short repairing time, thorough repairing effect and the like.
However, compared with other in-situ thermal desorption technologies, the technology has the problems of uneven temperature of the heating well, large heat loss of exhaust gas, insufficient combustion of fuel gas, substandard smoke emission and the like due to the special characteristics, so that the site is overheated, the heat energy utilization effect is poor, tail gas equipment is required to be additionally arranged to treat substandard tail gas, and the operation cost is increased.
In addition, because the gas thermal desorption technology heats soil by taking gas as a medium, the control system must timely feed back problems occurring in the heating unit and take corresponding measures.
Therefore, a set of efficient and energy-saving gas thermal desorption equipment and a control system are urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
To above content, the utility model provides a high-efficient energy-conserving gas thermal desorption equipment reduces the heat loss of discharging fume, makes the gas fully burn, guarantees to exhaust up to standard, reduces the heating well difference in temperature, optimization system control.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides an energy-efficient gas thermal desorption equipment which characterized in that includes:
the heating well is provided with an outer radiant tube and an inner tube which are mutually sleeved and form a backflow gap, a heat exchanger is also arranged in the outer radiant tube, and the heat exchanger is positioned above the inner tube;
the combustor is arranged above the heating well, the sprayed high-temperature flue gas can reach the bottom of the heating well through the inner pipe and is provided with a gas inlet, a combustion-supporting air inlet and a smoke exhaust port, the gas inlet is connected with a gas station, the outer side of the combustion-supporting air inlet is communicated to a combustion-supporting fan, the inner side of the combustion-supporting air inlet is communicated to a combustion chamber of the combustor through the heat exchanger, and the smoke exhaust port is connected with a smoke exhaust fan and used for exhausting the flue gas at the top of the heating well;
and a gap is reserved between the heat exchanger and the top of the inner pipe to form a flue gas return channel, and part of the flue gas flowing upwards in the return gap can return to the bottom of the heating well through the flue gas return channel.
High-efficient energy-conserving gas thermal desorption equipment, wherein: and an auxiliary heater is arranged in the inner pipe and can vertically stretch and descend.
High-efficient energy-conserving gas thermal desorption equipment, wherein: the auxiliary heater includes and is connected and downwardly extending into the total telescopic link in the inner tube with the inner tube upper end, has concatenated the several electrical heating unit downwards again at the lower extreme of total telescopic link, and every electrical heating unit includes a vertical telescopic link again and can be driven the electric heating rod along transverse arrangement who goes up and down by vertical telescopic link.
High-efficient energy-conserving gas thermal desorption equipment, wherein:
a gas pipeline of the gas station is communicated to a gas inlet of the combustor through a gas high-voltage switch, a gas low-voltage switch and a gas electromagnetic valve;
a combustion air pipeline of the combustion fan is communicated to a combustion air inlet of the combustor through an air high-voltage switch and an air electromagnetic valve;
the combustor is connected to the controller, the gas high-voltage switch, the gas low-voltage switch and the air high-voltage switch are connected in series and then connected to the gas electromagnetic valve, the gas electromagnetic valve is in signal connection with the controller, and the controller is connected with the air electromagnetic valve.
High-efficient energy-conserving gas thermal desorption equipment, wherein: the controllers of all the heating wells are connected to one PLC control unit.
High-efficient energy-conserving gas thermal desorption equipment, wherein: the burner is started in a pulse control mode.
High-efficient energy-conserving gas thermal desorption equipment, wherein: the combustor adopts a multi-stage combustion structure.
Compared with the prior art, the utility model discloses the beneficial effect who has is: by adopting the flue gas backflow channel, the function is as follows: 1. part of the flue gas is refluxed and combusted again, so that the combustion is more sufficient, and the combustion efficiency is improved; 2. because the flow in the pipeline is in direct proportion to the flow speed, when part of the flue gas flows back into the inner pipe, the flue gas amount in the inner pipe is increased, the flow speed is increased, the downward transmission speed of the high-temperature flue gas is higher, and the temperature difference of the flue gas in the inner pipe is reduced; 3. the flue gas backflow reduces the temperature of flame, so that the temperature of the heating well is more balanced, and the heating well at the section is safer; 4. part of the flue gas flows back and burns again, so that the burning is more sufficient, the content of nitrogen oxide in the flue gas can be reduced, and the setting of the flue gas backflow channel can reduce 20-40% of nitrogen oxide through calculation.
Drawings
Fig. 1 is an overall sectional view of the high-efficiency energy-saving gas thermal desorption device provided by the utility model;
FIG. 2 is a top view of the burner;
fig. 3 is a schematic view of the structure of the auxiliary heater.
Description of reference numerals: 1-a controller; 2-a burner; 3-a heat exchanger; 4, a flue gas backflow channel; 5, an inner tube; 6-outer radiant tube; 7-insulating layer; 8-the surface layer of the soil; 9-a smoke exhaust pipeline; 10-combustion air conduit; 11 a gas pipeline; 12-a smoke exhaust fan; 13-combustion-supporting fan; 14-gas station; 15-a PLC control unit; 16-a pressure reducing valve; 17-a bleed valve; 181-gas high-voltage switch; 182-gas low-voltage switch; 191-a gas electromagnetic valve; 192-an air solenoid valve; 201-gas manual linear valve; 202-combustion-supporting manual linear valve; 21-a support block; 22 a gas inlet; 23-combustion air inlet; 24-a smoke outlet; 25-a temperature sensor; 26-an auxiliary heater; 261-total telescopic rod; 262-a vertical telescopic rod; 263-electric heating rod; 264-control line; 265-cable line; 27-carbon steel pipe.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
As shown in fig. 1 and fig. 2, the utility model provides a high-efficient energy-conserving gas thermal desorption equipment, include:
the heating well is arranged below the soil surface layer, and is provided with an outer radiant tube 6 and an inner tube 5 (the lower end of the inner tube 5 is fixed by a supporting block 21) which are mutually sleeved to form a backflow gap, a heat exchanger 3 is also arranged in the outer radiant tube 6, and the heat exchanger 3 is positioned above the inner tube 5;
the heat preservation layer 7 is arranged on the soil surface layer 8 above the heating well;
the combustor 2 is arranged above the heat preservation layer 7 and is provided with a gas inlet 22 connected with the gas station 14, a combustion air inlet 23 connected with the combustion fan 13 and a smoke exhaust port 24 for smoke exhaust, after combustion air enters the combustion air inlet 23 through a combustion air pipeline 1010, heat exchange is completed in the heat exchanger 3, the combustion air enters a combustion chamber of the combustor 2, the combustion air is mixed with gas entering the combustion chamber through a gas pipeline 11 and is combusted, high-temperature smoke generated by combustion is sprayed downwards at a high speed into the bottom of the heating well, then flows back to the top of the heating well and fully exchanges heat with the combustion air in the heat exchanger 3; the smoke outlet 24 is connected with a smoke exhaust fan 12 through a smoke exhaust pipeline 9, and the smoke exhaust fan 12 generates negative pressure so that the smoke subjected to heat exchange at the top of the heating well is exhausted out of the heating well;
the combustor 2 rushes high temperature flue gas into the bottom of the heating well, and the flue gas is extracted by the negative pressure formed by the smoke exhaust fan 12, which is the main mode of the flue gas flowing of the process of the utility model. Because the velocity of flow of combustor 2 blowout high temperature flue gas is very fast for the flue gas is at the bottom gathering of heating well, and the upper portion of heating well is 2 flame sections of combustor, therefore the upper end and the lower extreme temperature of heating well are higher, and the intermediate position flue gas temperature is lower. The inhomogeneous phenomenon of place temperature can appear when the place need heat to required temperature, and partial place can the superheating, extravagant a large amount of heat energy, for this reason:
a gap is reserved between the bottom of the heat exchanger 3 and the top of the inner pipe 5 to form a flue gas backflow channel 4, high-temperature flue gas ejected at high speed by the burner 2 is sent to the bottom of the heating well through the inner pipe 5, then flows back to the upper part of the heating well through a backflow gap between the radiant tube and the inner pipe 5, when the high-temperature flue gas flows back to the flue gas backflow channel 4, 15-20% of flue gas enters the inner pipe 5 again through the flue gas backflow channel 4 and flows back to the bottom of the heating well under the action of the Venturi effect, and then continues to flow to the top of the heating well, and the functions are as follows: 1. part of the flue gas is refluxed and combusted again, so that the combustion is more sufficient, and the combustion efficiency is improved; 2. because the flow in the pipeline is in direct proportion to the flow speed, when part of the flue gas flows back into the inner pipe 5, the flue gas amount of the inner pipe 5 is increased, the flow speed is increased, the downward transmission speed of the high-temperature flue gas is higher, and the temperature difference of the flue gas in the inner pipe 5 is reduced; 3. the flue gas backflow reduces the temperature of flame, so that the temperature of the heating well is more balanced, and the heating well at the section is safer; 4. part of the flue gas flows back and burns again, so that the burning is more sufficient, the content of nitrogen oxide in the flue gas can be reduced, and the setting of the flue gas backflow channel 4 can reduce 20-40% of nitrogen oxide through calculation.
In addition, the utility model discloses still be equipped with auxiliary heater 26 in the inside of inner tube 5, as shown in fig. 3, auxiliary heater 26 includes the total telescopic link 261 (stainless steel) that is connected with inner tube 5 upper end and stretches into inner tube 5 downwards, has concatenated several electrical heating units again downwards at the lower extreme of total telescopic link 261, and each electrical heating unit includes a vertical telescopic link 262 (stainless steel) and can be driven by vertical telescopic link 262 to go up and down along the electrical heating rod 263 of horizontal arrangement; the total expansion link 261 can control the overall depth position of the electric heating units, and the vertical expansion links 262 can control the interval distance between the electric heating rods 263.
The control wire 264 and the cable 265 are led out of the heating well from the driving motor of the main telescopic rod 261, the driving motor of the vertical telescopic rod 262 and the electric heating rod 263, the control wire 264 is led out of the heating well in an armored mode and is externally connected to the controller 1 of the combustor 2, the cable 265 is a high-temperature-resistant insulating cable 265, the conductor is a pure nickel wire, and the outer wrapping material is high-temperature-resistant yarn, glass fiber tissue and fluorophlogopite tape and is finally connected into the electric box. The maximum operating temperature of the control line 264 and the cable 265 is 1000 ℃.
As shown in fig. 1, a carbon steel pipe 27 is arranged in parallel beside the heater well, temperature sensors 25 are uniformly distributed in the carbon steel pipe 27 for acquiring the low temperature points and the distribution lengths of the low temperature points in the heater well and outputting signals to the controller 1 of the burner 2, the main telescopic rod 261 of the auxiliary heater 26 can lift the electric heating unit above the low temperature points, and each vertical telescopic rod 262 can adjust the spacing distance between each electric heating rod 263 to be adapted to the distribution lengths of the low temperature points, and the auxiliary heater 26 performs heating treatment according to the temperature data output by the temperature sensors 25, so that the upper and lower temperatures of the heater well can tend to be consistent.
Through calculation, the heat energy loss can be saved by 40-70% finally by comprehensively using the auxiliary heating, the heat energy recovery of the heat exchanger 3 and the flue gas reflux mode.
The utility model discloses a heat exchanger 3 can reduce the flue gas temperature of heating well export with high temperature flue gas and combustion air heat transfer, reduces the exhaust pipe material requirement, can practice thrift the cost, reduces the energy consumption. The heat exchanger 3 is a multifunctional detachable metal fin/metal light tube type heat exchanger 3. When the site pollutants are mainly volatile organic pollutants or other pollutants requiring a low site heating temperature, the metal light pipe type heat exchanger 3 can be selected. The metal light tube type heat exchanger 3 has simple process, relatively low manufacturing cost and relatively low heat exchange effect, and when the temperature of flue gas is lower, the heat exchange effect of the heat exchanger 3 is only about 2 percent lower than that of a fin type heat exchanger. When the site pollutants are mainly semi-volatile organic pollutants or other pollutants requiring higher site heating temperature, the finned heat exchanger 3 is selected. The heat exchanger 3 has the advantages of complex process, higher manufacturing cost and good heat exchange effect, and the heat exchange efficiency under the condition of high-temperature flue gas is far higher than that of the light tube type heat exchanger 3. In addition, the longer the heating well is, the longer the length of the heat exchanger 3 is, the better the surface temperature difference of the heating well can be controlled, and the heat exchange efficiency is improved. When the length of the heat exchanger 3 is more than 1 meter and the temperature of the flue gas is higher, the light pipe type and fin type heat exchangers 3 can be used in combination, the fin type heat exchanger 3 is arranged at the lower part for exchanging the high-temperature flue gas, and the light pipe type heat exchanger 3 is arranged at the upper part for exchanging the low-temperature flue gas. The method can save cost and improve heat utilization rate.
The connection of the burner 2 to the surface installation is described below:
a gas pipeline 11 of the gas station 14 is communicated to a gas inlet 22 of the combustor 2 through a pressure reducing valve 16, a bleeding valve 17, a gas high-pressure switch 181, a gas low-pressure switch 182, a gas electromagnetic valve 191 and a gas manual linear valve 201;
a combustion air pipeline 10 of the combustion fan 13 is communicated to a combustion air inlet 23 of the combustor 2 through an air high-pressure switch 183, an air electromagnetic valve 192 and a combustion manual linear valve 202;
the smoke outlet 24 of the combustor 2 is communicated to the smoke exhaust fan 12 through a smoke exhaust pipeline 9;
the combustor 2 is connected to a controller 1, the gas high-voltage switch 181, the gas low-voltage switch 182 and the air high-voltage switch 183 are connected in series and then connected to the gas electromagnetic valve 191, the gas electromagnetic valve 191 is in signal connection with the controller 1, and the controller 1 is connected to the air electromagnetic valve 192; once the pressure in the gas pipeline 11 is too high or too low, or the pressure in the combustion air pipeline 10 is too high, the gas high-pressure switch 181, the gas low-pressure switch 182, or the air high-pressure switch 183 will feed back a signal to the gas electromagnetic valve 191, so that the gas electromagnetic valve 191 is closed to cut off the gas supply, and at the same time, the controller 1 which obtains the signal will close the air electromagnetic valve 192 to cut off the combustion air supply, thereby preventing the pipeline, the accessories, and the combustor 2 from being damaged by high/low pressure environment, and ensuring the safe operation of the gas thermal desorption site. The manual gas linear valve 201 and the manual combustion-supporting linear valve 202 can manually adjust the flow rates of the gas pipeline 11 and the combustion-supporting air pipeline 10 respectively.
The gas electromagnetic valve 191 and the air electromagnetic valve 192 are respectively connected with the controller 1, and manual ignition operation on a gas thermal desorption site can be realized. In addition, all heater well the controller 1 all is connected to a PLC the control unit 15, PLC the control unit 15 through each controller 1, can realize long-range ignition, stop fire operation, long-range monitoring running state to monitor heater well and soil intensification condition.
Moreover, the utility model discloses a pulse off-on control mode starts combustor 2 can effectively prolong radiant tube life and improve furnace temperature homogeneity, and design import flue gas temperature is about 600 supplyes one's food 800 ℃, compares ordinary continuous control mode, uses pulse control mode to make heating efficiency promote 10%, and the exhanst gas outlet temperature reduces 50 ℃, improves the radiant tube heat conduction effect, and combustion-supporting air preheating temperature promotes 100 ℃, promotes high temperature flue gas heat transfer effect.
The utility model adopts multi-stage combustion, the natural gas is more fully combusted by frequent ignition, and the content of harmful substances such as nitrogen oxide, carbon monoxide and the like in the flue gas is low; when the negative pressure of the combustion chamber is too high, the multistage combustion can protect the flame from being extinguished in the first-stage combustion area, and the combustion stability is ensured.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides an energy-efficient gas thermal desorption equipment which characterized in that includes:
the heating well is provided with an outer radiant tube and an inner tube which are mutually sleeved and form a backflow gap, a heat exchanger is also arranged in the outer radiant tube, and the heat exchanger is positioned above the inner tube;
the combustor is arranged above the heating well, the sprayed high-temperature flue gas can reach the bottom of the heating well through the inner pipe and is provided with a gas inlet, a combustion-supporting air inlet and a smoke exhaust port, the gas inlet is connected with a gas station, the outer side of the combustion-supporting air inlet is communicated to a combustion-supporting fan, the inner side of the combustion-supporting air inlet is communicated to a combustion chamber of the combustor through the heat exchanger, and the smoke exhaust port is connected with a smoke exhaust fan and used for exhausting the flue gas at the top of the heating well;
and a gap is reserved between the heat exchanger and the top of the inner pipe to form a flue gas return channel, and part of the flue gas flowing upwards in the return gap can return to the bottom of the heating well through the flue gas return channel.
2. The efficient and energy-saving gas thermal desorption device according to claim 1, which is characterized in that: and an auxiliary heater is arranged in the inner pipe and can vertically stretch and descend.
3. The efficient and energy-saving gas thermal desorption device according to claim 2, which is characterized in that: the auxiliary heater includes and is connected and downwardly extending into the total telescopic link in the inner tube with the inner tube upper end, has concatenated the several electrical heating unit downwards again at the lower extreme of total telescopic link, and every electrical heating unit includes a vertical telescopic link again and can be driven the electric heating rod along transverse arrangement who goes up and down by vertical telescopic link.
4. The efficient and energy-saving gas thermal desorption device according to claim 2, which is characterized in that: the carbon steel pipe has been arranged at heater shaft next door parallel, has arranged several temperature sensor along vertical in the carbon steel pipe, temperature sensor signal connection is to the controller of combustor, the controller again with auxiliary heater signal connection can control auxiliary heater's vertical flexible and lift.
5. The efficient and energy-saving gas thermal desorption device according to claim 1, which is characterized in that:
a gas pipeline of the gas station is communicated to a gas inlet of the combustor through a gas high-voltage switch, a gas low-voltage switch and a gas electromagnetic valve;
a combustion air pipeline of the combustion fan is communicated to a combustion air inlet of the combustor through an air high-voltage switch and an air electromagnetic valve;
the combustor is connected to the controller, the gas high-voltage switch, the gas low-voltage switch and the air high-voltage switch are connected in series and then connected to the gas electromagnetic valve, the gas electromagnetic valve is in signal connection with the controller, and the controller is connected with the air electromagnetic valve.
6. The efficient and energy-saving gas thermal desorption device according to claim 5, which is characterized in that: the controllers of all the heating wells are connected to one PLC control unit.
7. The efficient and energy-saving gas thermal desorption device according to claim 1, which is characterized in that: the burner is started in a pulse control mode.
8. The efficient and energy-saving gas thermal desorption device according to claim 1, which is characterized in that: the combustor adopts a multi-stage combustion structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249187.3U CN210647724U (en) | 2019-08-02 | 2019-08-02 | Efficient energy-saving gas thermal desorption equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921249187.3U CN210647724U (en) | 2019-08-02 | 2019-08-02 | Efficient energy-saving gas thermal desorption equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210647724U true CN210647724U (en) | 2020-06-02 |
Family
ID=70834904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921249187.3U Active CN210647724U (en) | 2019-08-02 | 2019-08-02 | Efficient energy-saving gas thermal desorption equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210647724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508604A (en) * | 2019-08-02 | 2019-11-29 | 中科鼎实环境工程有限公司 | Energy-efficient combustion gas thermal desorption equipment |
| CN113798313A (en) * | 2021-09-30 | 2021-12-17 | 上海市政工程设计研究总院（集团）有限公司 | In-situ gas thermal desorption system for polluted site |
-
2019
- 2019-08-02 CN CN201921249187.3U patent/CN210647724U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508604A (en) * | 2019-08-02 | 2019-11-29 | 中科鼎实环境工程有限公司 | Energy-efficient combustion gas thermal desorption equipment |
| CN113798313A (en) * | 2021-09-30 | 2021-12-17 | 上海市政工程设计研究总院（集团）有限公司 | In-situ gas thermal desorption system for polluted site |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210647724U (en) | Efficient energy-saving gas thermal desorption equipment | |
| CN110508604A (en) | Energy-efficient combustion gas thermal desorption equipment | |
| CN106918227A (en) | Using the end heat stove of heat-accumulating burner | |
| CN201555238U (en) | Device for local oxygen enrichment and combustion assistance of boiler | |
| CN201724387U (en) | Heat exchange hot blast system for fuel gas | |
| CN102978367B (en) | Vertical muffle-free stainless steel continuous annealing furnace | |
| CN105333730A (en) | Bottom heating type energy-saving aluminum bar furnace | |
| CN1657824A (en) | Burning method and device for air flowing natural balance when gas water heater working | |
| CN202024331U (en) | Self-thermal storage continuous combustion type radiant tube burning machine | |
| CN206600801U (en) | A kind of fractional combustion thermal-storage burning device utilizing radiant tube | |
| CN104110970B (en) | Exhaust heat recovering method based on maximization stove | |
| CN200972252Y (en) | Direct heating air-heater | |
| CN202119091U (en) | High-efficiency energy-saving air heating furnace | |
| CN103667685B (en) | Series preheating method and series preheating system for coal gas of sintering ignition furnace | |
| CN202328498U (en) | Multi-gas intelligent heating stove | |
| CN206280959U (en) | A kind of heat accumulating type multitubular bundles radiant tube combustion device | |
| CN202246727U (en) | High-blast-temperature combinative heat exchange system of blast furnace | |
| CN201081399Y (en) | Electric heating stove for dry ice expanded tobacco shred production line | |
| CN204494400U (en) | A kind of ever-burning flame system of regenerative combustion system and regenerative combustion system | |
| CN214791179U (en) | Tail gas treatment and waste heat recovery device | |
| CN204648668U (en) | A kind of glazed tiles processing hot-blast stove | |
| CN216977190U (en) | Direct combustion type gas hot blast stove | |
| CN213119073U (en) | Special simple burner for oil field | |
| CN203880710U (en) | Preheating type combustor for industrial kilns and furnaces | |
| CN102278816A (en) | Efficient energy-saving hot blast furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |