CN117072997A - Flue gas total heat recovery system, heating system and control method - Google Patents
Flue gas total heat recovery system, heating system and control method Download PDFInfo
- Publication number
- CN117072997A CN117072997A CN202311234666.9A CN202311234666A CN117072997A CN 117072997 A CN117072997 A CN 117072997A CN 202311234666 A CN202311234666 A CN 202311234666A CN 117072997 A CN117072997 A CN 117072997A
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- heat recovery
- waste heat
- flue gas
- runner
- boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a flue gas total heat recovery system, a heat supply system and a control method, wherein the heat supply system at least comprises two boilers, the flue gas total heat recovery system comprises a waste heat recovery runner module and a control module, the waste heat recovery runner module comprises waste heat recovery runner devices and centrifugal fans, smoke outlets of the waste heat recovery runner devices are connected with the centrifugal fans, smoke inlets of the waste heat recovery runner devices are connected with smoke outlets of the boilers, an electric control valve is arranged on a connecting pipeline of each waste heat recovery runner device and the smoke outlet of the boiler, the control module is used for collecting operation duration of each waste heat recovery runner device, and the control module is used for controlling starting and stopping of all the electric control valves according to the operation duration so as to balance the use duration of all the waste heat recovery runner devices. The invention can realize the high-efficiency flue gas heat and humidity recovery of the boiler, realize the automatic control of the waste heat recovery of the boiler, facilitate the equipment maintenance and prolong the service life of the equipment.
Description
Technical Field
The invention relates to a flue gas total heat recovery system, a heating system and a control method.
Background
The boiler is an energy conversion device, chemical energy and electric energy in fuel are input into the boiler, and steam, high temperature water or organic heat carrier with heat energy is output after combustion conversion of the boiler.
The boiler comprises a boiler and a furnace, wherein the boiler refers to a container, and the furnace refers to a place where fuel is combusted. The steam or hot water produced by the boiler can directly provide heat energy required by industrial production and people living, and can also be converted into mechanical energy through the steam power device, and the generator can generate electric energy by utilizing the mechanical energy.
The defects of the traditional production control mode are increasingly prominent, and the boiler room safety is low, the energy consumption is high, the operation cost is high and the like, and the boiler room safety is urgently improved by the improvement of a production monitoring platform. Based on the factors, research on boiler room reconstruction is needed, and the purposes of production efficiency, reasonable energy consumption reduction, safety improvement of the boiler room and the like are achieved through corresponding technical means while the load demand of the boiler room is met.
The waste heat recovery technology in other fields can be applied to the field of intelligent boilers, such as a dehumidification system for a fresh air treatment process of a spraying environment, with the patent number of CN20182082330. X.
In the prior art, the flue gas heat and humidity recovery device and the boiler are installed in a one-to-one mode, so that the device is inconvenient to maintain and has short service life.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, a flue gas heat and humidity recovery device and a boiler are installed in a one-to-one mode, the mode is inconvenient to maintain and the service life is short, and provides a flue gas total heat recovery system, a heating system and a control method, which can realize efficient flue gas heat and humidity recovery of the boiler, realize automatic control on waste heat recovery of the boiler, facilitate equipment maintenance and improve the service life of the equipment.
The invention solves the technical problems by the following technical scheme:
the utility model provides a flue gas total heat recovery system, is used for heating system, heating system includes two boilers at least, its characterized in that, flue gas total heat recovery system includes a plurality of waste heat recovery runner modules and a control module, and each waste heat recovery runner module includes a waste heat recovery runner device and a corresponding centrifugal fan, and waste heat recovery runner device's outlet flue is connected with corresponding centrifugal fan, and each waste heat recovery runner device's inlet is connected with each boiler's outlet flue, is equipped with an automatically controlled valve on each waste heat recovery runner device and the connecting tube of boiler outlet flue, control module is connected with each automatically controlled valve, control module is used for gathering each waste heat recovery runner device's operation duration, control module is used for controlling the start-stop of all automatically controlled valves in order to balance the use duration of all waste heat recovery runner devices according to the operation duration.
Preferably, the flue gas total heat recovery system further comprises an intercommunication device, the intercommunication device comprises flue gas exhaust pipes with the same quantity as the boilers and flue gas inlet pipes with the same quantity as the waste heat recovery runner devices, the flue gas exhaust pipes are arranged side by side, one ends of the flue gas exhaust pipes are connected with the boilers and the other ends of the flue gas exhaust pipes are connected with the chimney, the flue gas inlet pipes are arranged side by side, the flue gas inlet pipes are connected with the flue gas inlet ports of the waste heat recovery runner devices, each flue gas exhaust pipe is provided with through holes with the same quantity as the flue gas inlet pipes and connected with all flue gas inlet pipes by means of connecting pipes installed through the through holes, and each connecting pipe is provided with one electric control valve.
Preferably, the smoke inlet pipe is arranged above or below the smoke outlet pipe, and projections of the smoke inlet pipe and the smoke outlet pipe on a horizontal plane are mutually perpendicular.
Preferably, the control module is configured to:
judging whether to start a waste heat recovery runner module, if so, starting the waste heat recovery runner module with the shortest operation duration of the waste heat recovery runner device according to the operation duration.
Preferably, the control module is used for acquiring the fresh air inlet temperature, the rotating wheel rotating speed and the centrifugal fan rotating speed of the waste heat recovery rotating wheel device, and controlling the rotating wheel rotating speed and the centrifugal fan rotating speed according to the boiler operation parameters;
the control module is also used for judging whether the currently operated waste heat recovery runner module meets the power of all boilers according to the boiler operation parameters, and if not, starting one waste heat recovery runner module.
Preferably, the control module is further configured to:
the total power of all the boilers in the current operation is obtained, the total power and the maximum load of the waste heat recovery runner modules are utilized to calculate the minimum operation quantity of the waste heat recovery runner modules, whether the operation quantity of the current waste heat recovery runner modules is larger than the minimum operation quantity is judged, if yes, one waste heat recovery runner module is closed, and the running waste heat recovery runner modules are regulated to divide the current total load.
Preferably, the control module is further configured to:
acquiring the rotating speed of the rotating wheel and the rotating speed of the centrifugal fan according to the total power of all the currently operated boilers and the fresh air inlet temperature of the waste heat recovery rotating wheel device;
and controlling the start and stop of all the electric control valves according to the power difference between the current running boilers so as to balance the waste heat recovery resources matched with the boilers, wherein the waste heat recovery resources are provided by a waste heat recovery runner module.
Preferably, the control module is further configured to:
for any two running boilers, each boiler corresponds to one waste heat recovery runner module, power values of the two boilers are obtained, whether the power value of one boiler is larger than the power value of the other boiler by a preset multiple is judged, if yes, the waste heat recovery runner modules corresponding to the two boilers provide waste heat recovery resources for the boilers with large power values, and only one waste heat recovery runner module provides waste heat recovery resources for the boilers with small power values.
The invention also provides a heating system which is characterized by comprising the flue gas total heat recovery system.
The invention also provides a control method which is characterized in that the control method is used for controlling the flue gas total heat recovery system.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
the invention can realize the high-efficiency flue gas heat and humidity recovery of the boiler, realize the automatic control of the waste heat recovery of the boiler, facilitate the equipment maintenance and prolong the service life of the equipment.
Drawings
Fig. 1 is a schematic diagram of a heating system according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of an interworking device according to embodiment 1 of the present invention.
Fig. 3 is a flowchart of a control method according to embodiment 1 of the present invention.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a heating system, which includes a plurality of boilers and a flue gas total heat recovery system.
The flue gas total heat recovery system comprises a plurality of waste heat recovery runner modules and a control module. The control module can be a control terminal such as an operation server and a desktop computer.
In this embodiment, the number of the boilers 11 is 3, and the number of the waste heat recovery runner modules 21 is also 3, which is only used for more clearly explaining the connection relationship between the boilers and the waste heat recovery runner modules, and is not the same as the number of the waste heat recovery runner modules.
Each waste heat recovery runner module comprises a waste heat recovery runner device and a corresponding centrifugal fan.
The smoke outlet of the waste heat recovery runner device is connected with a corresponding centrifugal fan.
The smoke inlet of each waste heat recovery runner device is connected with the smoke outlet of each boiler.
An electric control valve is arranged on a connecting pipeline between each waste heat recovery runner device and the boiler smoke outlet.
The control module is connected with each electric control valve.
The control module is used for collecting the operation time length of each waste heat recovery runner device, and is used for controlling the start and stop of all the electric control valves according to the operation time length so as to balance the use time length of all the waste heat recovery runner devices.
Referring to fig. 2, the flue gas total heat recovery system further comprises an interconnection device 31.
The intercommunication device comprises smoke exhaust pipes 311 the same as the number of boilers and smoke inlet pipes 312 the same as the number of the waste heat recovery runner devices. The smoke exhaust pipes are arranged side by side, one end of the smoke exhaust pipe 311 is connected with the boiler, and the other end is connected with the chimney 313.
The smoke inlet pipe is arranged side by side and is connected with the smoke inlet of the waste heat recovery runner device.
Each smoke exhaust pipe is provided with through holes 314 the same as the number of the smoke inlet pipes and is connected with all the smoke inlet pipes by connecting pipes installed through the through holes.
Each connecting tube is provided with one of said electrically controlled valves 315.
The smoke inlet pipe is arranged above or below the smoke exhaust pipe, and projections of the smoke inlet pipe and the smoke exhaust pipe on a horizontal plane are mutually perpendicular.
The flue gas total heat recovery system further comprises a fresh air intercommunication device, the air blown out from the fresh air outlet of the waste heat recovery runner module is heated, and the heated fresh air enters the air inlet of the boiler after passing through the fresh air intercommunication device.
The control module is used for:
judging whether to start a waste heat recovery runner module, if so, starting the waste heat recovery runner module with the shortest operation duration of the waste heat recovery runner device according to the operation duration.
The control module is used for acquiring the fresh air inlet temperature, the rotating wheel rotating speed and the centrifugal fan rotating speed of the waste heat recovery rotating wheel device, and controlling the rotating wheel rotating speed and the centrifugal fan rotating speed according to the boiler operation parameters and the fresh air inlet temperature of the waste heat recovery rotating wheel device;
the control module is also used for judging whether the currently operated waste heat recovery runner module meets the power of all boilers according to the boiler operation parameters, and if not, starting one waste heat recovery runner module.
The control module is further configured to:
the total power of all the boilers in the current operation is obtained, the total power and the maximum load of the waste heat recovery runner modules are utilized to calculate the minimum operation quantity of the waste heat recovery runner modules, whether the operation quantity of the current waste heat recovery runner modules is larger than the minimum operation quantity is judged, if yes, one waste heat recovery runner module is closed, and the running waste heat recovery runner modules are regulated to divide the current total load.
Specifically, when the running number of the current waste heat recovery runner modules is judged to be more than or equal to 2 than the minimum running number, one waste heat recovery runner module is closed, and the running waste heat recovery runner modules are adjusted to divide the current total load.
The control module is further configured to:
acquiring the rotating speed of the rotating wheel and the rotating speed of the centrifugal fan according to the total power of all the currently operated boilers and the fresh air inlet temperature of the waste heat recovery rotating wheel device;
and controlling the start and stop of all the electric control valves according to the power difference between the current running boilers so as to balance the waste heat recovery resources matched with the boilers, wherein the waste heat recovery resources are provided by a waste heat recovery runner module.
The control module is further configured to:
for any two running boilers, each boiler corresponds to one waste heat recovery runner module, and power values of the two boilers are obtained;
judging whether the power value of one boiler is larger than the power value of the other boiler by a preset multiple (the power value of the other boiler is set to be 0.75 times in the embodiment), if so, providing waste heat recovery resources for the boilers with large power values by the corresponding waste heat recovery runner modules of the two boilers, and providing waste heat recovery resources for the boilers with small power values by only one waste heat recovery runner module.
Referring to fig. 2, the powers of the first, second and third boilers are 3a, 2a and a, respectively, and the judgment manner of the control module is as follows:
for the first boiler and the third boiler, the power of the first boiler is 3 times that of the third boiler and is more than 1.75 times that of the third boiler, the first boiler occupies the waste heat recovery resource of the third boiler, the first electric control valve, the seventh electric control valve and the ninth electric control valve are opened, the third boiler does not occupy the waste heat recovery resource of the first boiler, and the third electric control valve is closed.
For the second boiler and the third boiler, the power of the first boiler is 2 times and is more than 1.75 times that of the third boiler, then the second boiler occupies the waste heat recovery resource of the third boiler, the second electric control valve, the eighth electric control valve and the ninth electric control valve are opened, the third boiler does not occupy the waste heat recovery resource of the first boiler, and the sixth electric control valve is closed.
For the first boiler and the second boiler, the power of the first boiler is 1.5 times and less than 1.75 times of that of the second boiler, then the third boiler does not occupy the waste heat recovery resource of the second boiler, and the fourth electric control valve is closed.
Referring to fig. 3, with the above-mentioned flue gas total heat recovery system, this embodiment further provides a control method, including:
step 100, the control module collects the operation time of each waste heat recovery runner device;
and step 101, the control module controls the start and stop of all the electric control valves according to the operation time length so as to balance the use time length of all the waste heat recovery runner devices.
The smoke inlet pipe is arranged above or below the smoke exhaust pipe, and projections of the smoke inlet pipe and the smoke exhaust pipe on a horizontal plane are mutually perpendicular.
Step 101 comprises:
judging whether to start a waste heat recovery runner module, if so, starting the waste heat recovery runner module with the shortest operation duration of the waste heat recovery runner device according to the operation duration.
Further, step 101 includes:
the control module is used for acquiring the fresh air inlet temperature of the waste heat recovery runner device, the runner rotating speed and the centrifugal fan rotating speed, and controlling the runner rotating speed and the centrifugal fan rotating speed according to the boiler operating parameters and the fresh air inlet temperature of the waste heat recovery runner device;
and the control module judges whether the currently operated waste heat recovery runner module meets the power of all boilers according to the boiler operation parameters, and if not, starts one waste heat recovery runner module.
Further, step 101 includes:
the total power of all the boilers in the current operation is obtained, the total power and the maximum load of the waste heat recovery runner modules are utilized to calculate the minimum operation quantity of the waste heat recovery runner modules, whether the operation quantity of the current waste heat recovery runner modules is larger than the minimum operation quantity is judged, if yes, one waste heat recovery runner module is closed, and the running waste heat recovery runner modules are regulated to divide the current total load.
Further, step 101 further includes:
acquiring the rotating speed of the rotating wheel and the rotating speed of the centrifugal fan according to the total power of all the currently operated boilers and the fresh air inlet temperature of the waste heat recovery rotating wheel device;
and controlling the start and stop of all the electric control valves according to the power difference between the current running boilers so as to balance the waste heat recovery resources matched with the boilers, wherein the waste heat recovery resources are provided by a waste heat recovery runner module.
Further, step 101 includes:
for any two running boilers, each boiler corresponds to one waste heat recovery runner module, power values of the two boilers are obtained, whether the power value of one boiler is larger than the power value of the other boiler by a preset multiple is judged, if yes, the waste heat recovery runner modules corresponding to the two boilers provide waste heat recovery resources for the boilers with large power values, and only one waste heat recovery runner module provides waste heat recovery resources for the boilers with small power values.
The functions in step 101 may be operated in parallel, or may be judged and operated sequentially according to the time sequence, if the judgment result is that the operation is performed again after returning to the beginning of the time sequence, so as to realize the corresponding function.
The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention. 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.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. The utility model provides a total heat recovery system of flue gas for heating system, heating system includes two boilers at least, its characterized in that, total heat recovery system of flue gas includes a plurality of waste heat recovery runner modules and a control module, and each waste heat recovery runner module includes a waste heat recovery runner device and a centrifugal fan that corresponds, and waste heat recovery runner device's outlet flue is connected with the centrifugal fan that corresponds, and each waste heat recovery runner device's inlet is connected with each boiler's outlet flue, is equipped with an automatically controlled valve on each waste heat recovery runner device and the connecting tube of boiler outlet flue, control module is connected with each automatically controlled valve, control module is used for gathering each waste heat recovery runner device's operation duration, control module is used for controlling the start-stop of all automatically controlled valves in order to balance the use duration of all waste heat recovery runner devices according to the operation duration.
2. The flue gas total heat recovery system according to claim 1, further comprising an intercommunication device, wherein the intercommunication device comprises flue gas pipes with the same number as the boilers and flue gas inlet pipes with the same number as the waste heat recovery runner devices, the flue gas pipes are arranged side by side, one ends of the flue gas pipes are connected with the boilers and the other ends of the flue gas pipes are connected with the chimney, the flue gas inlet pipes are arranged side by side, the flue gas inlet pipes are connected with the flue gas inlet ports of the waste heat recovery runner devices, each flue gas pipe is provided with through holes with the same number as the flue gas inlet pipes, and connecting pipes installed by the through holes are connected with all flue gas inlet pipes, and each connecting pipe is provided with one electric control valve.
3. The flue gas total heat recovery system according to claim 2, wherein the flue gas inlet pipe is arranged above or below the flue gas outlet pipe, and projections of the flue gas inlet pipe and the flue gas outlet pipe on a horizontal plane are perpendicular to each other.
4. The flue gas total heat recovery system of claim 1, wherein the control module is configured to:
judging whether to start a waste heat recovery runner module, if so, starting the waste heat recovery runner module with the shortest operation duration of the waste heat recovery runner device according to the operation duration.
5. The flue gas total heat recovery system according to claim 4, wherein the control module is configured to obtain a fresh air inlet temperature, a rotating wheel rotating speed and a centrifugal fan rotating speed of the waste heat recovery rotating wheel device, and the control module is further configured to control the rotating wheel rotating speed and the centrifugal fan rotating speed according to boiler operation parameters;
the control module is also used for judging whether the currently operated waste heat recovery runner module meets the power of all boilers according to the boiler operation parameters, and if not, starting one waste heat recovery runner module.
6. The flue gas total heat recovery system of claim 4, wherein the control module is further configured to:
the total power of all the boilers in the current operation is obtained, the total power and the maximum load of the waste heat recovery runner modules are utilized to calculate the minimum operation quantity of the waste heat recovery runner modules, whether the operation quantity of the current waste heat recovery runner modules is larger than the minimum operation quantity is judged, if yes, one waste heat recovery runner module is closed, and the running waste heat recovery runner modules are regulated to divide the current total load.
7. The flue gas total heat recovery system of claim 4, wherein the control module is further configured to:
acquiring the rotating speed of the rotating wheel and the rotating speed of the centrifugal fan according to the total power of all the currently operated boilers and the fresh air inlet temperature of the waste heat recovery rotating wheel device;
and controlling the start and stop of all the electric control valves according to the power difference between the current running boilers so as to balance the waste heat recovery resources matched with the boilers, wherein the waste heat recovery resources are provided by a waste heat recovery runner module.
8. The flue gas total heat recovery system of claim 7, wherein the control module is further configured to:
for any two running boilers, each boiler corresponds to one waste heat recovery runner module, power values of the two boilers are obtained, whether the power value of one boiler is larger than the power value of the other boiler by a preset multiple is judged, if yes, the waste heat recovery runner modules corresponding to the two boilers provide waste heat recovery resources for the boilers with large power values, and only one waste heat recovery runner module provides waste heat recovery resources for the boilers with small power values.
9. A heating system, characterized in that it comprises a total heat recovery system for flue gases according to any one of claims 1 to 8.
10. A control method for controlling a total heat recovery system for flue gas according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311234666.9A CN117072997A (en) | 2023-09-22 | 2023-09-22 | Flue gas total heat recovery system, heating system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311234666.9A CN117072997A (en) | 2023-09-22 | 2023-09-22 | Flue gas total heat recovery system, heating system and control method |
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| CN117072997A true CN117072997A (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311234666.9A Pending CN117072997A (en) | 2023-09-22 | 2023-09-22 | Flue gas total heat recovery system, heating system and control method |
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| CN107036231A (en) * | 2016-12-28 | 2017-08-11 | 杭州裕达自动化科技有限公司 | Cooling tower intelligent energy-saving control method in central air-conditioning monitoring system |
| CN207230513U (en) * | 2017-09-21 | 2018-04-13 | 厦门同欣源新材料科技有限公司 | Residual heat from boiler fume utilizes system |
| CN109813130A (en) * | 2019-03-11 | 2019-05-28 | 中冶焦耐(大连)工程技术有限公司 | High-temperature flue gas system of heat recovery coke oven |
| CN110888403A (en) * | 2019-10-14 | 2020-03-17 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Intelligent soot blowing closed-loop control system based on minimum loss boiler convection heating surface |
| CN210424999U (en) * | 2019-07-11 | 2020-04-28 | 中国电建集团河北省电力勘测设计研究院有限公司 | Flue gas waste heat recovery system with interconnected pipelines |
| CN116242135A (en) * | 2023-03-06 | 2023-06-09 | 上海工业锅炉(无锡)有限公司 | A dual-channel internally adjustable tunnel kiln waste heat power generation boiler |
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2023
- 2023-09-22 CN CN202311234666.9A patent/CN117072997A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5739504A (en) * | 1995-07-28 | 1998-04-14 | C. Cowles & Company | Control system for boiler and associated burner |
| US20140321839A1 (en) * | 2011-07-26 | 2014-10-30 | Peter Michael Armstrong | System, method, and apparatus for heating |
| CN104819507A (en) * | 2015-05-19 | 2015-08-05 | 周明 | Boiler group control system and control method thereof |
| CN204807240U (en) * | 2015-07-23 | 2015-11-25 | 北京华通兴远供热节能技术有限公司 | A running state monitoring system for gas boiler residual heat from flue gas settlement |
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| CN109813130A (en) * | 2019-03-11 | 2019-05-28 | 中冶焦耐(大连)工程技术有限公司 | High-temperature flue gas system of heat recovery coke oven |
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| CN116242135A (en) * | 2023-03-06 | 2023-06-09 | 上海工业锅炉(无锡)有限公司 | A dual-channel internally adjustable tunnel kiln waste heat power generation boiler |
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Effective date of registration: 20251010 Address after: 100020, No. 6 Liu Fang North Street, Beijing, Chaoyang District Applicant after: BEIJING DISTRICT HEATING Group Country or region after: China Address before: No. 12, Yuncheng street, Beijing economic and Technological Development Zone, Daxing District, Beijing Applicant before: Beijing Thermal Equipment Manufacturing Co.,Ltd. Country or region before: China |