CN113959090B - Waste heat recovery utilizes system of combustor in pitch mixing station - Google Patents
Waste heat recovery utilizes system of combustor in pitch mixing station Download PDFInfo
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- CN113959090B CN113959090B CN202111194039.8A CN202111194039A CN113959090B CN 113959090 B CN113959090 B CN 113959090B CN 202111194039 A CN202111194039 A CN 202111194039A CN 113959090 B CN113959090 B CN 113959090B
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- conveying pipeline
- combustor
- heating
- asphalt
- control module
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
Abstract
The invention belongs to the technical field of asphalt mixing station equipment, and particularly relates to a waste heat recycling system of a combustor in an asphalt mixing station, wherein two ends of a first heating conveying pipeline are respectively communicated with a hot inlet and a cold outlet of an asphalt tank, and a heat-conducting oil furnace is arranged on the first heating conveying pipeline; the first valve is arranged at a position between the cold outlet and the heat-conducting oil furnace on the first heating conveying pipeline, the position between the cold outlet and the first valve on the first heating conveying pipeline is communicated with one end of a second heating conveying pipeline, the other end of the second heating conveying pipeline is communicated with a position between the first valve and the heat-conducting oil furnace on the first heating conveying pipeline, and the second valve is arranged at any position between one end, close to the first heating conveying pipeline, of the second heating conveying pipeline and the combustor. A large amount of hot gas generated by the burner can be recycled and applied to the operation of heating the asphalt without influencing the normal production, and the energy consumed by the asphalt heating of the heat conduction oil boiler is reduced.
Description
Technical Field
The invention belongs to the technical field of asphalt mixing station equipment, and particularly relates to a waste heat recycling system of a combustor in an asphalt mixing station.
Background
In the prior art, when asphalt concrete is produced, a large amount of useless hot gas is generated when a burner in an asphalt mixing station heats stone materials at high temperature, and the generated hot gas is directly discharged from a flue, so that a large amount of energy is wasted; however, when the burner works, the heat conduction oil boiler of the asphalt mixing station is also continuously operated to heat asphalt, and the working temperature of the burner is far higher than that of the heat conduction oil boiler.
Therefore, if a large amount of hot gas generated by the burner can be recycled and applied to the asphalt heating operation, the energy consumed by the asphalt heating of the heat conduction oil boiler can be greatly reduced, and the related structural system is absent in the prior art device.
Disclosure of Invention
The invention aims to provide a waste heat recycling system of a combustor in an asphalt mixing station, which can recycle and apply a large amount of hot gas generated by the combustor to the operation of heating asphalt without influencing normal production, and reduce energy consumed by a heat conduction oil boiler for heating asphalt.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a waste heat recycling system of a combustor in an asphalt mixing station comprises an asphalt tank and the combustor, wherein the inner tail end of the combustor is communicated with a flue, the asphalt tank comprises a cold outlet and a hot inlet, the cold outlet is communicated with one end of a first heating conveying pipeline, the other end of the first heating conveying pipeline is communicated with the hot inlet, and a heat-conducting oil furnace is arranged on the first heating conveying pipeline;
a first valve is arranged at a position between the cold outlet and the heat conduction oil furnace on the first heating conveying pipeline, a second heating conveying pipeline is communicated with a position between the cold outlet and the first valve on the first heating conveying pipeline, the other end of the second heating conveying pipeline is communicated with a position between the first valve and the heat conduction oil furnace on the first heating conveying pipeline, partial pipelines of the second heating conveying pipeline are heating calandria arranged in a burner at the tail end and the head end of a flue, a second valve is arranged at any position between one end of the second heating conveying pipeline close to the first heating conveying pipeline and the burner, and the burner is provided with a temperature sensor for monitoring the internal temperature of the burner, the temperature sensor is installed at the tail end of the flue of the burner, the waste heat recycling system of the burner in the asphalt mixing station further comprises a control module, the control module is in communication connection with the temperature sensor, a temperature control module is arranged in the heat conduction oil furnace and used for automatically controlling the heating temperature of the heat conduction oil furnace, the control module is in communication connection with the temperature control module of the heat conduction oil furnace, the first valve and the second valve are both electric valves special for asphalt, the control module is in communication connection with the first valve and the second valve, temperature signals in the burner are transmitted to the control module by the temperature sensor, the control module calculates the heat supplementing temperature of the heat conduction oil furnace through the temperature value in the burner, and the temperature signals required to be supplemented by the heat conduction oil furnace are transmitted to the temperature control module in the heat conduction oil furnace by the control module.
As a further optimized technical scheme, the control module is an independently arranged control cabinet body.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
when the temperature in the combustor reaches the working temperature, the first valve is controlled to be closed and the second valve is controlled to be opened, asphalt is discharged from a cold outlet in an asphalt tank, the asphalt enters the first heating conveying pipeline, then the asphalt enters the tail end of the combustor and the head end of the flue through the first heating conveying pipeline, the asphalt in the first heating conveying pipeline is heated through high-temperature gas in the tail end of the combustor and the head end of the flue, the energy of the high-temperature gas in the combustor is effectively recycled, the high-temperature gas is prevented from being directly discharged through the flue, the pipeline, located in the tail end of the combustor and the head end of the flue, of the second heating conveying pipeline is a heating exhaust pipe, the high-temperature gas in the combustor is fully contacted with the second heating conveying pipeline filled with the asphalt to be heated, then the asphalt enters the heat conduction oil furnace through the second heating conveying pipeline to be heated again, the asphalt is guaranteed to fully reach the required temperature, finally the asphalt is discharged into the asphalt tank through the second heating conveying pipeline, the first heating conveying pipeline and the heat conduction oil furnace, the circulation heating of the asphalt is achieved, a large amount of heat conduction oil generated by the recovery principle, and the energy consumed by the boiler is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a waste heat recycling system of a burner in an asphalt mixing station in an embodiment;
in the attached figure, 1-an asphalt tank, 2-a combustor, 3-a flue, 4-a cold outlet, 5-a hot inlet, 6-a first heating conveying pipeline, 7-a heat conduction oil furnace, 8-a first valve, 9-a second heating conveying pipeline, 10-a heating exhaust pipe, 11-a second valve, 12-a temperature sensor and 13-a control module.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Detailed description of the invention
As shown in the figure, the waste heat recycling system of the combustor in the asphalt mixing station comprises an asphalt tank 1 and a combustor 2, wherein the tail end in the combustor 2 is communicated with a flue 3, the asphalt tank 1 comprises a cold outlet 4 and a hot inlet 5, the cold outlet 4 is communicated with one end of a first heating conveying pipeline 6, the other end of the first heating conveying pipeline 6 is communicated with the hot inlet 5, a heat conduction oil furnace 7 is arranged on the first heating conveying pipeline 6, the description of the above contents belongs to a common system structure in the prior art, asphalt is stored in the asphalt tank 1, the asphalt needing to be heated during working is discharged from the cold outlet 4, the asphalt enters the first heating conveying pipeline 6, the asphalt enters the heat conduction oil furnace 7 through the first heating conveying pipeline 6 to be heated, then is discharged into the hot inlet 5 through the first heating conveying pipeline 6, and finally returns to the asphalt tank 1 to realize the cyclic heating of the asphalt;
in this embodiment, a first valve 8 is disposed at a position between the cold outlet 4 and the heat-conducting oil furnace 7 on the first heating delivery pipe 6, a position between the cold outlet 4 and the first valve 8 on the first heating delivery pipe 6 is communicated with one end of a second heating delivery pipe 9, the other end of the second heating delivery pipe 9 is communicated with a position between the first valve 8 and the heat-conducting oil furnace 7 on the first heating delivery pipe 6, a part of the second heating delivery pipe 9 is a heating exhaust pipe 10 disposed at an end in the burner 2 and a head end of the flue 3, and a second valve 11 is disposed at any position between one end of the second heating delivery pipe 9 close to the first heating delivery pipe 6 and the burner 2.
The specific working principle is that when the temperature in the combustor 2 does not reach the temperature standard for effectively heating the asphalt, the first valve 8 is controlled to be opened, the second valve 11 is controlled to be closed, the asphalt to be heated is discharged out of the cold outlet 4, the asphalt enters the first heating conveying pipeline 6, the asphalt enters the heat-conducting oil furnace 7 through the first heating conveying pipeline 6 to be heated, then the asphalt is discharged into the hot inlet 5 through the first heating conveying pipeline 6, and finally the asphalt returns to the asphalt tank 1 to realize the cyclic heating of the asphalt;
when the temperature in the combustor 2 reaches the working temperature, the first valve 8 is controlled to be closed and the second valve 11 is controlled to be opened, asphalt is discharged from the asphalt tank 1 through the cold outlet 4, the asphalt enters the first heating conveying pipeline 6, the asphalt enters the combustor 2 through the first heating conveying pipeline 6 and enters the tail end of the first heating conveying pipeline 6 and the head end of the flue 3, the asphalt in the first heating conveying pipeline 6 is heated through high-temperature gas in the combustor 2 and the head end of the flue 3, the energy of the high-temperature gas in the combustor 2 is effectively recycled, the high-temperature gas is prevented from being directly discharged through the flue 3, a pipeline of the second heating conveying pipeline 9, which is positioned in the combustor 2 and the tail end of the flue 3, is a heating exhaust pipe 10, the high-temperature heat conducting oil gas in the combustor 2 fully contacts with the second heating conveying pipeline 9 filled with the asphalt to be heated, the asphalt enters the heat conducting oil furnace 7 through the second heating conveying pipeline 9 to be supplemented and heated again, the asphalt is ensured to fully reach the required temperature, and finally, the consumption of hot heat conducting oil in the asphalt tank 1 is reduced through the hot gas heating operation principle of the asphalt.
In this embodiment, the temperature sensor 12 for monitoring the internal temperature of the combustor 2 is disposed on the combustor 2, so as to monitor the internal temperature of the combustor 2.
Detailed description of the invention
The embodiment is further optimized on the basis of the first embodiment.
In this embodiment, the temperature sensor 12 is installed at the flue position at the end of the burner.
In this embodiment, the waste heat recycling system of the burner in the asphalt mixing station further includes a control module 13, the control module 13 is in communication connection with a temperature sensor 12, a temperature control module is arranged in the heat conduction oil furnace 7, the temperature control module in the heat conduction oil furnace 7 is used for automatically controlling the heating temperature of the heat conduction oil furnace 7 to asphalt, the control module 13 is in communication connection with the temperature control module of the heat conduction oil furnace 7, the first valve 8 and the second valve 11 are both asphalt-dedicated electric valves, and the control module 13 is in communication connection with the first valve 8 and the second valve 11;
when the temperature in the combustor 2 does not reach the temperature standard for effectively heating asphalt, the temperature sensor 12 transmits a temperature signal to the control module 13, the control module controls the first valve 8 to be opened and the second valve 11 to be closed, and the asphalt is heated by the heat-conducting oil furnace 7; when the temperature in the combustor 2 reaches the temperature standard for effectively heating asphalt, the temperature sensor 12 transmits a temperature signal to the control module 13, the control module 13 controls the first valve 8 to be closed and the second valve 11 to be opened, the asphalt is heated for the first time through the heating exhaust pipe 10 in the combustor 2 and is heated for the second time through the heat conduction oil furnace 7, asphalt heating is achieved, the temperature sensor 12 transmits the temperature signal in the combustor 2 to the control module 13, the control module 13 calculates the heat supplementing temperature of the heat conduction oil furnace 7 through the temperature value in the combustor 2, and the control module 13 transmits the temperature signal of the heat conduction oil furnace 7, which needs to be heated for the heat supplementing, to the temperature control module in the heat conduction oil furnace 7. Thereby leading the asphalt to reach the heating temperature standard under the condition of optimizing thermal resources.
Combustor 2 is as the device of prior art asphalt mixing station heating building stones, when combustor heating building stones in-process reaches stable operating temperature, discovers in the waste heat recovery of combustor utilizes the system's in asphalt mixing station concrete practice work, and the temperature in the combustor 2 enables the heating calandria to the required standard temperature of pitch heating, need not the heat conduction oil furnace and carries out secondary heating to pitch.
Detailed description of the invention
The embodiment is further optimized on the basis of the second specific implementation mode.
In this embodiment, the control module 13 is an independently arranged control cabinet.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (2)
1. A waste heat recycling system of a combustor in an asphalt mixing station comprises an asphalt tank and the combustor, wherein the inner tail end of the combustor is communicated with a flue;
the asphalt tank comprises a cold outlet and a hot inlet, the cold outlet is communicated with one end of a first heating conveying pipeline, the other end of the first heating conveying pipeline is communicated with the hot inlet, and a heat-conducting oil furnace is arranged on the first heating conveying pipeline;
it is characterized in that a first valve is arranged on the first heating conveying pipeline between the cold outlet and the heat-conducting oil furnace, one end of a second heating conveying pipeline is communicated with the position on the first heating conveying pipeline between the cold outlet and the first valve, the other end of the second heating conveying pipeline is communicated with a position, which is positioned between the first valve and the heat-conducting oil furnace, on the first heating conveying pipeline, part of the second heating conveying pipeline is a heating calandria arranged at the tail end in the combustor and at the head end of the flue, a second valve is arranged at any position between one end of the second heating conveying pipeline close to the first heating conveying pipeline and the burner, the combustor is provided with a temperature sensor for monitoring the temperature in the combustor, the temperature sensor is arranged at the position of a flue at the tail end of the combustor, the waste heat recycling system of the combustor in the asphalt mixing station further comprises a control module, the control module is in communication connection with the temperature sensor, a temperature control module is arranged in the heat-conducting oil furnace, the temperature control module in the heat conduction oil furnace is used for automatically controlling the heating temperature of the heat conduction oil furnace, the control module is in communication connection with a temperature control module of the heat-conducting oil furnace, the first valve and the second valve are both electric valves special for asphalt, the control module is in communication connection with the first valve and the second valve, the temperature sensor transmits temperature signals in the combustor to the control module, the control module calculates the heat supplementing temperature of the heat conduction oil furnace through temperature values in the combustor, and the control module transmits the temperature signals of the heat conduction oil furnace, which need to be supplemented, to the temperature control module in the heat conduction oil furnace.
2. The waste heat recycling system for the burner in the asphalt mixing station according to claim 1, wherein the control module is an independently arranged control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111194039.8A CN113959090B (en) | 2021-10-13 | 2021-10-13 | Waste heat recovery utilizes system of combustor in pitch mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111194039.8A CN113959090B (en) | 2021-10-13 | 2021-10-13 | Waste heat recovery utilizes system of combustor in pitch mixing station |
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| Publication Number | Publication Date |
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| CN113959090A CN113959090A (en) | 2022-01-21 |
| CN113959090B true CN113959090B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111194039.8A Active CN113959090B (en) | 2021-10-13 | 2021-10-13 | Waste heat recovery utilizes system of combustor in pitch mixing station |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942946A (en) * | 2012-12-08 | 2013-02-27 | 沈阳洪达信息科技有限公司 | Pitch heating system |
| CN203999504U (en) * | 2014-08-08 | 2014-12-10 | 徐州徐工筑路机械有限公司 | Asphalt heating system |
| CN204902238U (en) * | 2015-07-28 | 2015-12-23 | 山东泰安山锅集团有限公司 | Economizer's of tape trailer portion organic heat carrier boiler |
| CN109224669A (en) * | 2018-11-16 | 2019-01-18 | 三汽车制造有限公司 | Asphalt station drying roller smoke waste heat utilization system and asphalt mixer |
| CN210814558U (en) * | 2019-08-28 | 2020-06-23 | 福建南方路面机械股份有限公司 | Flue gas purification system of asphalt mixing plant |
| CN211424698U (en) * | 2019-11-11 | 2020-09-04 | 廊坊德基机械科技有限公司 | Heat-conducting oil furnace flue gas waste heat recycling device for asphalt mixing plant |
| CN110846977A (en) * | 2019-11-15 | 2020-02-28 | 黄山学院 | Asphalt mixing station waste heat is recycled and system of preheating |
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