CN201155924Y - Dew-point corrosion resistant residual heat recovering system - Google Patents
Dew-point corrosion resistant residual heat recovering system Download PDFInfo
- Publication number
- CN201155924Y CN201155924Y CNU2008200520345U CN200820052034U CN201155924Y CN 201155924 Y CN201155924 Y CN 201155924Y CN U2008200520345 U CNU2008200520345 U CN U2008200520345U CN 200820052034 U CN200820052034 U CN 200820052034U CN 201155924 Y CN201155924 Y CN 201155924Y
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- temperature compensator
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses an anti-dew point corrosion waste heat recovery system; a main pipe (14) is connected with a main pneumatic valve (18) and an auxiliary pneumatic valve (22) through shunting of a booster pump (15); the main pneumatic valve (18) is connected with the heating end inlet of a temperature compensator (7) by a first valve (11); the heating end outlet of the temperature compensator (7) is connected with the heat exchange inlet of a hot tube heat exchanger (1) by a second valve (5) and a third valve (2); the heat exchange outlet of the hot tube heat exchanger (1) is connected with the cooling end inlet of the temperature compensator (7) by a fourth valve (4) and a fifth valve (6); the cooling end outlet of the temperature compensator (7) is connected with a mixer (21) by a seventh valve (12); the auxiliary pneumatic valve (22 is connected with the mixer (21) by an eighth valve (20); the outlet of the mixer (21) is connected with a sixth valve (25). The system has cold stream self-compensating and heat exchanger wall temperature regulating functions, effectively solves the low-temperature dew point corrosion problem of the heat exchanger, prolongs the service life of the heat exchanger, can recovery the waste heat of the low-temperature flue gas with high efficiency, thereby saving energy and reducing emission.
Description
Technical field
The utility model relates to a kind of Industrial Stoves flue gas waste heat recovery system, especially low-temperature flue gas residual neat recovering system.
Background technology
At present, China's electric power, iron and steel, coloured, petrochemical industry, building materials, chemical industry, light industry, 8 industry major products of weaving specific energy consumption average specific international most advanced level are high by 40%.
Statistics shows that domestic industry waste heat total resources account for 17%～67% of fuel consumption total amount.Wherein, middle low-temperature flue gas waste heat accounts for greatly about half of fume afterheat resource.But, the recovery utilization rate of low temperature waste gas waste heat is lower in China, particularly for the low-temperature flue gas below 250 ℃, because equipment easily produces low-temperature dew point corrosion, reasons such as heat exchanger service life is short, a large amount of residual heat resources are not recycled, and cause that the enterprise product specific energy consumption is too high, production cost increases, not only waste energy, and cause even more serious problem of environmental pollution.
Energy-saving and cost-reducing and environmental protection is long-term and urgent strategic task of China.The effective recycling of industrial waste heat resource both can improve efficiency of energy utilization, reduce emission of harmful substances, again energy savings, protection environment.Therefore, reinforcement UTILIZATION OF VESIDUAL HEAT IN Study on Technology and application are significant.
The utility model content
Technical problem to be solved in the utility model is the deficiency that exists in the flue gas waste heat recovery process in order to overcome, and the waste heat efficient system for reclaiming of a kind of anti-low-temperature dew point corrosion, service life of equipment length is provided.
In order to solve the problems of the technologies described above, the dew-point corrosion resistant residual heat recovering system that the utility model provides, house steward is connected with main pneumatic operated valve and secondary pneumatic operated valve by force (forcing) pump and check-valves shunting, described main pneumatic operated valve connects the fire end inlet of temperature compensator by first valve, the fire end outlet of described temperature compensator is by second valve, the 3rd valve connects described heat exchange of heat pipe heat exchange inlet, the heat exchange outlet of described heat exchange of heat pipe is by the 4th valve, the 5th valve connects described temperature compensator colling end inlet, the colling end outlet of described temperature compensator is connected with blender by the 7th valve, described secondary pneumatic operated valve is connected with described blender by the 8th valve, and described mixer outlet is connected with the 6th valve.
Described heat exchange of heat pipe heat exchange outlet and mixer outlet respectively are provided with the digital display temperature sensor, and described digital display temperature sensor is electrically connected with Programmable Logic Controller, and described Programmable Logic Controller is electrically connected with described main pneumatic operated valve and secondary pneumatic operated valve.
Described main pneumatic operated valve is provided with first by-passing valve, and described secondary pneumatic operated valve is provided with second by-passing valve.
Described temperature compensator fire end is provided with the 3rd by-passing valve, and described temperature compensator colling end is provided with the 4th by-passing valve.
Adopt the dew-point corrosion resistant residual heat recovering system of technique scheme, it is made up of heat exchange of heat pipe, temperature compensator, blender and humidity control system, cold fluid is divided into major and minor two flow processs, the temperature compensated device of main flow cold fluid is warmed up to predetermined value, enter heat exchange of heat pipe and absorb fume afterheat, the flow direction of flue gas and cold fluid is the following current arranged crosswise, cold fluid after being heated carries out to a certain degree heat exchange as thermal source in temperature compensator, the cold fluid that enters blender and secondary flow range loop is mixed into predetermined temperature, send user terminal at last.Humidity control system is made up of digital display temperature sensor, touch-screen, Programmable Logic Controller, control valve and connection lead.For the main flow loop, the fluid temperature (F.T.) of heat exchanger import department is by the digital display temperature sensor, and Programmable Logic Controller acts on control valve, regulates the cold fluid flow in real time, the heat exchanger minimum wall temperature is on the flue gas dew point temperature, has avoided the generation of heat exchanger dew point corrosion effectively.The adjusting of secondary flow range loop fluid flow realizes by the control system identical with main flow, makes the mixer outlet fluid temperature (F.T.) satisfy user's requirement.And touch-screen is used to import operating instruction.
Influence the operation of whole heat-exchange system when preventing that temperature compensator from breaking down, also be provided with two bypass lines in the flow process, its effect is that the switch by valve cuts off the path that fluid enters temperature compensator.
The utility model dew-point corrosion resistant residual heat recovering system has cooling fluid temperature self compensation and heat exchanger wall temperature regulating power, improved the ability of heat exchanger dew-point corrosion resistant, prolonged heat exchanger service life, can high efficiente callback low-temperature flue gas waste heat, reach the effect of energy-saving and emission-reduction.
By temperature compensator cold fluid is heated, improve the cooling fluid temperature that enters heat exchanger.Parameter according to cold and hot fluid changes, temperature control system is regulated the cold fluid parameter by Programmable Logic Controller makes heat exchange of heat pipe have the adaptive ability of dew-point corrosion resistant, guarantee that the heat exchanger operating wall temperature is on the flue gas dew point, prolonged heat exchanger service life.Energy high efficiente callback low-temperature flue gas waste heat below 250 ℃ helps energy savings, the protection environment.
In sum, the utility model has overcome the deficiency that exists in flue gas waste heat recovery process in the past, is that a kind of service life of equipment is long, effectively reclaims the dew-point corrosion resistant residual heat recovering system of low-temperature flue gas waste heat.
Description of drawings
Accompanying drawing is the utility model process flow diagram.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to accompanying drawing, house steward 14 is connected with main pneumatic operated valve 18 and secondary pneumatic operated valve 22 by force (forcing) pump 15 and check-valves 16 shuntings, main pneumatic operated valve 18 connects the fire end inlet of temperature compensator 7 by first valve 11, the fire end outlet of temperature compensator 7 is by second valve 5, the 3rd valve 2 connects heat exchange of heat pipe 1 heat exchange inlet, the heat exchange outlet of heat exchange of heat pipe 1 is by the 4th valve 4, the 5th valve 6 connects temperature compensator 7 colling ends inlet, the colling end outlet of temperature compensator 7 is connected with blender 21 by the 7th valve 12, secondary pneumatic operated valve 22 is connected with blender 21 by the 8th valve 20, and blender 21 outlets connect the 6th valve 25 and flowmeter 26.Heat exchange of heat pipe 1 heat exchange outlet and blender 21 outlets respectively are provided with the digital display temperature sensor, and the digital display temperature sensor is electrically connected with Programmable Logic Controller 10, and Programmable Logic Controller 10 is electrically connected with main pneumatic operated valve 18 and secondary pneumatic operated valve 22.Main pneumatic operated valve 18 is provided with first by-passing valve 17, and secondary pneumatic operated valve 22 is provided with second by-passing valve 23.Temperature compensator 7 fire ends are provided with the 3rd by-passing valve 8, and temperature compensator 7 colling ends are provided with the 4th by-passing valve 9.
Referring to accompanying drawing, by heat exchange of heat pipe 1, temperature compensator 7, blender 21, the main flow loop, in the system that secondary flow range loop and programmable controller 10 are formed, cold fluid from house steward 14 through force (forcing) pump 15, check-valves 16, be divided into the master, secondary two flow processs, the main flow cold fluid is through main pneumatic operated valve 18, the first pipelines 13, first valve 11, enter temperature compensator 7, be warmed up to predetermined value, again through second valve 5, the 3rd valve 2, enter heat exchange of heat pipe 1 and absorb fume afterheat, the flow direction of flue gas and cold fluid is the following current arranged crosswise, and the fluid after being heated passes through the 4th valve 4 and the 5th valve 6 as thermal source, enter temperature compensator 7, carry out to a certain degree heat exchange with cold medium, enter blender 21 by the 7th valve 12, and the cold fluid of secondary flow journey is through secondary pneumatic operated valve 22, second pipeline 24, the 8th valve 20 enters blender 21, mix with the fluid that comes out from temperature compensator 7 reach predetermined temperature after, through the 6th valve 25, flowmeter 26 send user terminal.
Humidity control system is formed (dotted line represents to connect lead among the figure) by digital display temperature sensor TC, Programmable Logic Controller 10, touch-screen 28, main pneumatic operated valve 18, secondary pneumatic operated valve 22 and connection lead.For the main flow loop, the fluid temperature (F.T.) of heat exchanger import department is by digital display temperature sensor TC, and Programmable Logic Controller 10 acts on main pneumatic operated valve 18, realizes the real-time adjusting of cold fluid flow, and the heat exchanger minimum wall temperature is on the flue gas dew point temperature.Through digital display temperature sensor TC, secondary pneumatic operated valve 22 valve openings of programmable controller 10 control secondary flow journeys realize by blender 21 exit fluid temperature (F.T.)s in the adjusting of secondary flow journey cold fluid flow.And touch-screen 28 is used to import operating instruction.Main pneumatic operated valve 18, secondary pneumatic operated valve 22 next doors are respectively equipped with first by-passing valve 17 and second by-passing valve 23, under the normal condition, first by-passing valve 17 and second by-passing valve 23 are in closed condition, when main pneumatic operated valve 18 and secondary pneumatic operated valve 22 break down, can open first by-passing valve 17 and manually control of second by-passing valve, 23 realizations simultaneously by closing main pneumatic operated valve 18 and secondary pneumatic operated valve 22 former and later two valves.
Influence the operation of whole heat-exchange system when overhauling in order to prevent that temperature compensator 7 from breaking down, also be provided with two bypass lines in the flow process, its effect is the path that enters temperature compensator 7 by the switch cut-out medium of valve.Operating process is: the 3rd by-passing valve 8 and the 4th by-passing valve 9 are opened, simultaneously with the 5th valve 6, first valve 11 of temperature compensator 7 and export second valve 5, the 7th valve 12 Close Alls can be realized.
In addition, also be provided with an emptying vent valve 3, the first blowoff valves 19 and second blowoff valve 27 in the flow process, be used for residual medium in system's stoppage in transit back discharge conduit.
Claims (5)
1, a kind of dew-point corrosion resistant residual heat recovering system, it is characterized in that: house steward (14) is connected with main pneumatic operated valve (18) and secondary pneumatic operated valve (22) by force (forcing) pump (15) shunting, described main pneumatic operated valve (18) connects the fire end inlet of temperature compensator (7) by first valve (11), the fire end outlet of described temperature compensator (7) is by second valve (5), the 3rd valve (2) connects heat exchange of heat pipe (1) heat exchange inlet, the heat exchange outlet of described heat exchange of heat pipe (1) is by the 4th valve (4), the 5th valve (6) connects described temperature compensator (7) colling end inlet, the colling end outlet of described temperature compensator (7) is connected with blender (21) by the 7th valve (12), described secondary pneumatic operated valve (22) is connected with described blender (21) by the 8th valve (20), and described blender (21) outlet connects the 6th valve (25).
2, dew-point corrosion resistant residual heat recovering system according to claim 1, it is characterized in that: described heat exchange of heat pipe (1) heat exchange outlet and blender (21) outlet respectively are provided with the digital display temperature sensor, described digital display temperature sensor is electrically connected with Programmable Logic Controller (10), and described Programmable Logic Controller (10) is electrically connected with described main pneumatic operated valve (18) and secondary pneumatic operated valve (22).
3, dew-point corrosion resistant residual heat recovering system according to claim 1 and 2 is characterized in that: described main pneumatic operated valve (18) is provided with first by-passing valve (17), and described secondary pneumatic operated valve (22) is provided with second by-passing valve (23).
4, dew-point corrosion resistant residual heat recovering system according to claim 1 and 2 is characterized in that: described temperature compensator (7) fire end is connected with the 3rd by-passing valve (8), and described temperature compensator 7 colling ends are provided with the 4th by-passing valve (9).
5, dew-point corrosion resistant residual heat recovering system according to claim 3 is characterized in that: described temperature compensator (7) fire end is provided with the 3rd by-passing valve (8), and described temperature compensator (7) colling end is provided with the 4th by-passing valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200520345U CN201155924Y (en) | 2008-01-08 | 2008-01-08 | Dew-point corrosion resistant residual heat recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200520345U CN201155924Y (en) | 2008-01-08 | 2008-01-08 | Dew-point corrosion resistant residual heat recovering system |
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| Publication Number | Publication Date |
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| CN201155924Y true CN201155924Y (en) | 2008-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200520345U Expired - Lifetime CN201155924Y (en) | 2008-01-08 | 2008-01-08 | Dew-point corrosion resistant residual heat recovering system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230746A (en) * | 2011-06-03 | 2011-11-02 | 句容市华联特种设备制造有限公司 | Low-temperature dew point corrosion resistant afterheat recycling device of suspension roaster |
| CN102997265A (en) * | 2012-12-07 | 2013-03-27 | 广东中节能环保有限公司 | Cold source temperature control method and device of flue gas waste heat recovery device |
| CN106767059A (en) * | 2016-12-02 | 2017-05-31 | 山西大学 | A kind of temp.-regulating type forced circulation heat exchange of heat pipe |
-
2008
- 2008-01-08 CN CNU2008200520345U patent/CN201155924Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230746A (en) * | 2011-06-03 | 2011-11-02 | 句容市华联特种设备制造有限公司 | Low-temperature dew point corrosion resistant afterheat recycling device of suspension roaster |
| CN102997265A (en) * | 2012-12-07 | 2013-03-27 | 广东中节能环保有限公司 | Cold source temperature control method and device of flue gas waste heat recovery device |
| CN102997265B (en) * | 2012-12-07 | 2015-11-18 | 广东中节能环保有限公司 | The sink temperature control method of flue gas waste heat recovery equipment and device |
| CN106767059A (en) * | 2016-12-02 | 2017-05-31 | 山西大学 | A kind of temp.-regulating type forced circulation heat exchange of heat pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080108 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |