CN110822464A - Flue gas white elimination system - Google Patents
Flue gas white elimination system Download PDFInfo
- Publication number
- CN110822464A CN110822464A CN201911005130.3A CN201911005130A CN110822464A CN 110822464 A CN110822464 A CN 110822464A CN 201911005130 A CN201911005130 A CN 201911005130A CN 110822464 A CN110822464 A CN 110822464A
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- CN
- China
- Prior art keywords
- smoke
- flue gas
- precooler
- water
- fan
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- 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.)
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Classifications
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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
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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
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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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)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a smoke white elimination system, which comprises: the cooling system comprises a shell, a cooling tower, a smoke fan, a precooler, a water baffle, a heat pump unit, a temperature regulator and a water pan which are arranged in the shell, and a control device for controlling the operation of the system; the heat pump unit comprises a compressor, a condenser, a throttling element and an evaporator which are sequentially connected through pipelines; the shell is provided with a smoke inlet and a smoke outlet, the smoke fan is arranged below the smoke inlet, and the precooler, the evaporator, the water baffle, the condenser and the temperature regulator are sequentially arranged between the smoke outlet and the smoke outlet of the smoke fan and above the water receiving disc; the cooling tower is respectively connected with the precooler and the temperature regulator through pipelines; the system greatly simplifies the structure of the equipment, the control of the equipment operation and the source of power energy, reduces the operation cost, saves energy and reduces consumption.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to a smoke whitening system.
Background
The smoke generating device comprises a smoke generating device, a smoke discharging device, a water discharging device and a water discharging device. In the prior art, the sources of a cold source and a heat source which are respectively needed for cooling and heating are irrelevant, and the whole process flow can be realized only by respectively arranging the independent cold source and the independent heat source equipment, including the refrigeration water for cooling and dehumidifying flue gas and the high-temperature steam for heating, so that the system is complex in arrangement and high in energy consumption.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a flue gas white elimination system, and aims to solve the technical problems that in the prior art, a cold source and a heat source device are required to be respectively arranged in a flue gas dehydration white elimination system, the structure is complex, and the energy consumption is high.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flue gas whitening system, comprising: the cooling system comprises a shell, a cooling tower, a smoke fan, a precooler, a water baffle, a heat pump unit, a temperature regulator and a water pan which are arranged in the shell, and a control device for controlling the operation of the system; the heat pump unit comprises a compressor, a condenser, a throttling element and an evaporator which are sequentially connected through pipelines; the shell is provided with a smoke inlet and a smoke outlet, the smoke fan is arranged below the smoke inlet, and the precooler, the evaporator, the water baffle, the condenser and the temperature regulator are sequentially arranged between the smoke outlet and the smoke outlet of the smoke fan and above the water receiving disc; the cooling tower is respectively connected with the precooler and the temperature regulator through pipelines.
In the smoke white elimination system, a temperature sensor is arranged between the temperature regulator and the smoke outlet and is electrically connected with the control device.
In the flue gas white elimination system, liquid inlets of the precooler and the temperature regulator are respectively connected with a liquid outlet pipeline of the cooling tower, and liquid outlets of the precooler and the temperature regulator are respectively connected with a liquid return pipeline of the cooling tower.
In the flue gas white elimination system, the throttling element comprises one or more of a thermal expansion valve, an electronic expansion valve or a capillary tube.
In the flue gas white elimination system, the condenser and the evaporator are both tube-fin heat exchangers, and the heat exchange medium is Freon refrigerant.
In the flue gas white elimination system, the precooler and the temperature regulator are both tube-fin heat exchangers, and the heat exchange medium is water or brine.
In the smoke whitening system, the water baffle comprises a plastic or aluminum alloy water baffle.
In the flue gas white elimination system, the flue gas fan comprises a centrifugal fan.
Has the advantages that:
the invention provides a flue gas white elimination system, which simultaneously provides cold quantity and heat quantity required by flue gas dehydration white elimination through a matched heat pump unit, thereby greatly simplifying the arrangement of process equipment and a control program during the operation of the process equipment; the cold quantity and the heat quantity are transferred in the same heat pump system, only one energy source is needed to be provided, and the energy consumption is reduced; the cold energy of the cooling water is utilized to carry out pre-cooling and dehumidification on the high-temperature flue gas, so that the load of the evaporator is greatly reduced, and the power consumption of the system is reduced; the cooling water is used for adjusting the temperature of the discharged flue gas, so that the energy consumption is low and the effect is high. The system has low operation cost, saves energy and reduces consumption, and compared with the energy sources such as petroleum fuel, natural gas and the like adopted in the prior art, the system only needs to adopt electric power, is simple and reliable to use, and is suitable for the smoke dehydration and whitening treatment in the industries such as steel or power plants.
Drawings
Fig. 1 is a schematic structural diagram of the smoke whitening system provided by the invention.
Fig. 2 is a schematic connection diagram of the heat pump unit.
Description of the main element symbols: 1-shell, 2-cooling tower, 3-flue gas fan, 4-precooler, 5-water baffle, 6-heat pump unit, 7-temperature regulator, 8-water pan, 9-control device, 101-smoke inlet, 102-smoke outlet, 201-liquid outlet pipe, 202-liquid return pipe, 601-compressor, 602-condenser, 603-throttling element and 604-evaporator.
Detailed Description
The invention provides a smoke whitening system, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides a smoke whitening system, comprising: the system comprises a shell 1, a cooling tower 2, a flue gas fan 3, a precooler 4, a water baffle 5, a heat pump unit 6, a temperature regulator 7 and a water pan 8 which are arranged in the shell 1, and a control device 9 for controlling the system to operate; the heat pump unit 6 comprises a compressor 601, a condenser 602, a throttling element 603 and an evaporator which are connected in sequence through pipelines; the shell 1 is provided with a smoke inlet 101 and a smoke outlet 102, the smoke fan 3 is arranged below the smoke inlet 101, and the precooler 4, the evaporator, the water baffle 5, the condenser 602 and the temperature regulator 7 are sequentially arranged between the smoke outlet 102 and the smoke outlet of the smoke fan 3 and above the water receiving disc 8; the cooling tower 2 is respectively connected with a precooler 4 and a temperature regulator 7 through pipelines.
The evaporator and the condenser 602 of the heat pump unit 6 are a closed circulation system, the refrigerant flows under the driving of the compressor 601, phase change heat absorption and release are realized in the evaporator and the condenser 602, the refrigerant absorbs latent heat and sensible heat of flue gas at the evaporator side to cool and dehydrate the flue gas, and the absorbed heat is transferred to the flue gas when the refrigerant flows to the condenser 602 to realize the temperature rise of the flue gas. The whole process only needs the circulation of one heat pump system to realize the transfer of the same cold quantity and heat quantity, thereby cooling, dehumidifying, heating and warming the flue gas, and the energy-saving effect is obvious.
The precooler 4 and the thermoregulator 7 are arranged, so that the flue gas can be greatly cooled, dehumidified and the exhaust gas temperature can be adjusted under the condition that the power consumption of the fan and the water pump of the cooling tower 2 is increased, the power consumption is low, the effect is very obvious, the precooler and the thermoregulator are matched with the heat pump unit 6 to complement each other, the requirement on the heat exchange load of the heat pump unit 6 is reduced, and the flexibility of the heat pump unit 6 on the exhaust gas temperature adjustment is supplemented.
The flue gas white elimination system simplifies the structure of the equipment, the control of the equipment operation and the source of power energy, reduces the operation cost, saves energy and reduces consumption.
Furthermore, a temperature sensor is arranged between the temperature regulator 7 and the smoke outlet, the temperature sensor is electrically connected with the control device 9 and used for sensing the temperature of smoke in the space and feeding the temperature back to the control device 9, the control device 9 controls the power consumption of a fan and a water pump of the cooling tower 2 according to the set smoke exhaust temperature, and the flow of cooling water entering the temperature regulator 7 is adjusted to adjust the smoke exhaust temperature.
Specifically, liquid inlets of the precooler 4 and the temperature regulator 7 are respectively connected with a liquid outlet pipeline 201 of the cooling tower 2, liquid outlets thereof are respectively connected with a liquid return pipeline 202 of the cooling tower 2, and cooling and dehydration or temperature regulation are respectively carried out on the high-temperature flue gas through cooling water output by the cooling tower 2.
The throttling element 603 comprises one or more of a thermostatic expansion valve, an electronic expansion valve or a capillary tube; the thermostatic expansion valve and the electronic expansion valve are electrically connected with the control device 9, and the control device 9 adjusts the opening and closing states of the thermostatic expansion valve and the electronic expansion valve according to the heat exchange requirement of the system.
Specifically, the condenser 602 and the evaporator are both tube-fin heat exchangers, and the heat exchange medium is freon refrigerant. The precooler 4 and the thermoregulator 7 are both tube-fin heat exchangers, and the heat exchange medium is water or brine. The tube-fin heat exchanger has the advantages of compact and light structure, high heat transfer efficiency and strong applicability, and can meet the heat exchange requirement of large-scale equipment.
The water baffle 5 comprises a plastic or aluminum alloy water baffle 5; the plastic and the aluminum alloy are light, and the mass of the smoke white elimination system is reduced to a certain extent.
The flue gas fan 3 comprises a centrifugal fan.
In one embodiment, the high-temperature flue gas rich in moisture enters the shell 1 of the system from the flue gas inlet 101 under the drainage of the flue gas fan 3, and firstly passes through the precooler 4, low-temperature cooling water provided by the cooling tower 2 flows in the precooler 4, and the flue gas is subjected to primary cooling and dehumidification when contacting with the precooler 4. The flue gas then passes through the evaporator, and the inside low temperature freon refrigerant that flows of evaporator, the flue gas is further reduced the temperature by the evaporator and dehumidifies. Then, when the flue gas passes through the water baffle 5, the water drops driven by the wind are intercepted by the water baffle 5, so that the flue gas without condensed water passes through the condenser 602. High-temperature Freon refrigerant flows in the condenser 602 to heat and raise the temperature of the passing flue gas; the heated high-temperature dry flue gas passes through a temperature regulator, low-temperature water from the cooling tower 2 flows in the temperature regulator, the control device 9 compares the real-time temperature value of the flue gas collected by the received temperature sensor with the set flue gas emission temperature demand value, and adjusts the amount of cooling water entering the temperature regulator 7 from the cooling tower 2, so that the cooling amplitude of the high-temperature dry flue gas is adjusted, and the dry flue gas after water removal and white elimination enters a chimney at the set temperature and is discharged to the atmospheric environment.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. A flue gas whitening system, comprising: the cooling system comprises a shell, a cooling tower, a smoke fan, a precooler, a water baffle, a heat pump unit, a temperature regulator and a water pan which are arranged in the shell, and a control device for controlling the operation of the system; the heat pump unit comprises a compressor, a condenser, a throttling element and an evaporator which are sequentially connected through pipelines; the shell is provided with a smoke inlet and a smoke outlet, the smoke fan is arranged below the smoke inlet, and the precooler, the evaporator, the water baffle, the condenser and the temperature regulator are sequentially arranged between the smoke outlet and the smoke outlet of the smoke fan and above the water receiving disc; the cooling tower is respectively connected with the precooler and the temperature regulator through pipelines.
2. The smoke whitening system according to claim 1, wherein a temperature sensor is arranged between the temperature regulator and the smoke outlet, and the temperature sensor is electrically connected with the control device.
3. The flue gas whitening system of claim 1, wherein the liquid inlets of the precooler and the temperature regulator are respectively connected with the liquid outlet pipeline of the cooling tower, and the liquid outlets thereof are respectively connected with the liquid return pipeline of the cooling tower.
4. The flue gas whitening system of claim 1, wherein the throttling element comprises one or more of a thermostatic expansion valve, an electronic expansion valve, or a capillary tube.
5. The flue gas whitening system of claim 1, wherein the condenser and the evaporator are both tube and fin heat exchangers, and the heat exchange medium is freon refrigerant.
6. The flue gas whitening reduction system of claim 1, wherein the precooler and the attemperator are both tube-fin heat exchangers, and the heat exchange medium is water or brine.
7. The flue gas whitening system of claim 1, wherein the water deflector comprises a plastic or aluminum alloy water deflector.
8. The flue gas whitening system of claim 1, wherein the flue gas fan comprises a centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005130.3A CN110822464A (en) | 2019-10-22 | 2019-10-22 | Flue gas white elimination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005130.3A CN110822464A (en) | 2019-10-22 | 2019-10-22 | Flue gas white elimination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110822464A true CN110822464A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911005130.3A Pending CN110822464A (en) | 2019-10-22 | 2019-10-22 | Flue gas white elimination system |
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| CN (1) | CN110822464A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866367A (en) * | 2021-10-27 | 2021-12-31 | 西安热工研究院有限公司 | Flue gas condensation water removal device and working method |
-
2019
- 2019-10-22 CN CN201911005130.3A patent/CN110822464A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866367A (en) * | 2021-10-27 | 2021-12-31 | 西安热工研究院有限公司 | Flue gas condensation water removal device and working method |
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