CN116181450A - Tail gas smoke elimination cooling device of diesel generator - Google Patents
Tail gas smoke elimination cooling device of diesel generator Download PDFInfo
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- CN116181450A CN116181450A CN202211695786.4A CN202211695786A CN116181450A CN 116181450 A CN116181450 A CN 116181450A CN 202211695786 A CN202211695786 A CN 202211695786A CN 116181450 A CN116181450 A CN 116181450A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/0205—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
- F01N2250/10—Combinations of different methods of purification cooling and filtering
Abstract
The invention provides a smoke abatement and temperature reduction device for tail gas of a diesel generator, and relates to the technical field of tail gas treatment of diesel generators. The system comprises a spraying smoke abatement cooling system, a heat exchange type cooling and dehumidifying system, a high-voltage electrostatic smoke abatement system and a mixed air cooling system which are connected with a control system and are sequentially arranged; the smoke abatement and purification device can carry out smoke abatement and purification and cooling on high-temperature black smoke exhausted by the diesel generator, has a good effect on air pollution prevention and control, and saves water resources.
Description
Technical Field
The invention relates to the technical field of tail gas treatment of diesel generators, in particular to a tail gas smoke abatement and temperature reduction device of a diesel generator.
Background
The temperature of exhaust gas discharged by the diesel generator set is high, the heat load is large, and the exhaust gas continuously heats up the exhaust port, so that the exhaust port forms obvious thermal infrared exposure symptoms; in the initial starting stage or in the sudden load increase of the diesel generator set, the diesel is incompletely combusted, so that the flue gas contains a large amount of incompletely combusted black smoke particles, and the obvious visible light exposure symptom is formed at the flue gas outlet under the weather condition of higher visibility.
The current research on the tail gas smoke elimination and cooling devices of the diesel generators is less, and some tail gas smoke elimination and cooling devices of the diesel generators in the prior art mostly adopt a spray smoke elimination and cooling or heat exchange and cooling mode, so that the smoke elimination effect is good, and the visible light exposure symptom of a smoke outlet can be effectively eliminated; but has limited effect in cooling, and can not effectively eliminate the thermal infrared exposure symptom of the smoke outlet; and the water consumption is larger, and the method is not applicable to environments with smaller cooling reservoirs and water shortage of power stations.
Disclosure of Invention
The invention aims to provide a tail gas smoke elimination and cooling device of a diesel generator, which can eliminate smoke, purify and cool high-temperature black smoke discharged by the diesel generator, has a good effect on preventing and controlling air pollution and saves water resources.
Embodiments of the present invention are implemented as follows:
the embodiment of the application provides a smoke abatement and temperature reduction device for tail gas of a diesel generator, which comprises a spray smoke abatement and temperature reduction system, a heat exchange type temperature reduction and dehumidification system, a high-voltage electrostatic smoke abatement system and a mixed air temperature reduction system which are connected with a control system and are sequentially arranged;
the spray smoke abatement cooling system comprises an air inlet cabin and a spray cabin which are connected with each other, the spray cabin is divided into a plurality of communicated cabins through a plurality of partition boards, spiral nozzles are respectively arranged on the top surfaces of the cabins, the spiral nozzles are connected into a first water storage tank through a first pipeline and a circulating water pump, a water draining part is arranged on the bottom surface of the spray cabin, and the water draining part is also connected into the first water storage tank through a second pipeline and a drainage pump;
the heat exchange type cooling and dehumidifying system comprises a heat exchange box and a heat exchange tube group arranged in the heat exchange box, wherein the heat exchange tube group is connected with a second water storage tank, the top of the heat exchange box is provided with a smoke outlet, and the smoke outlet is provided with a smoke exhaust pipe;
the high-voltage electrostatic smoke abatement system comprises a smoke abatement box, an exhaust pipe and an air inlet pipe, wherein the exhaust pipe and the air inlet pipe are arranged in the smoke abatement box, the air inlet pipe is connected with the heat exchange box through an exhaust pipe, and a high-voltage source is arranged in the smoke abatement box;
the air mixing cooling system comprises an air mixing box, an air inlet machine and a fresh air machine, wherein the air inlet machine and the fresh air machine are connected with the air mixing box, the air inlet machine is connected with the air mixing box through an exhaust pipe, a plurality of baffles are arranged in the air mixing box, and the air mixing box is divided into a plurality of sections of air chambers by the baffles.
In some embodiments of the present invention, the partition includes a first partition and a second partition, the first partition is connected to a top surface of the spray chamber, the first partition forms a first channel with a bottom surface of the spray chamber, the second partition is disposed on one side of the first partition, the second partition forms a second channel with the bottom surface of the spray chamber, and the second partition forms a third channel with the top surface of the spray chamber.
In some embodiments of the present invention, the heat exchange tube groups are multiple groups, each group includes multiple heat exchange tubes, and the multiple groups of heat exchange tube groups are disposed in the heat exchange box from top to bottom.
In some embodiments of the present invention, the exhaust pipe and the intake pipe are both square tapered, and an outlet aperture of the exhaust pipe is larger than an inlet aperture of the intake pipe.
In some embodiments of the present invention, the air mixing box is disposed on a support frame, and an air inlet fan and a fresh air fan are disposed on the lower side of the support frame.
In some embodiments of the invention, the spray booth is provided with a level sensor.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
the embodiment of the invention provides a smoke abatement and cooling device for tail gas of a diesel generator, which comprises a spray smoke abatement and cooling system, a heat exchange type cooling and dehumidifying system, a high-voltage electrostatic smoke abatement system and a mixed air cooling system, wherein the running states of the spray smoke abatement and cooling system, the heat exchange type cooling and dehumidifying system and the mixed air cooling system are all controlled and adjusted by a control system. The high-temperature tail gas is sprayed and cooled step by step through a spraying smoke abatement cooling system, then is further cooled and dehumidified through a heat exchange type cooling and dehumidifying system, and if the temperature difference between the temperature of the smoke and the target temperature does not reach the standard yet, the temperature difference between the temperature of the discharged smoke and the target temperature reaches the requirement through the bottom of the air mixing cooling system.
In the tail gas purification and smoke elimination problem, the spraying smoke elimination and cooling system and the high-voltage electrostatic smoke elimination system work cooperatively, when high-temperature tail gas enters the spraying cabin at a certain air inlet speed, fine particles in the smoke are firstly washed to remove a part of fine particles, the fine particles in the smoke collide with water mist emitted by the spiral nozzle, the fine particles in the smoke are captured and fall into circulating water, the temperature of the high-temperature tail gas discharged by the diesel generator in the spraying smoke elimination process is also reduced, and the circulating water can return to the first water storage tank for next use, so that water resources are saved; the tail gas treated by the spray smoke abatement cooling system continuously passes through the heat exchange type cooling and dehumidifying system so as to eliminate water vapor mixed in the tail gas and further cool the tail gas, and then enters the high-voltage electrostatic smoke abatement system, and fine particles in the smoke gas are captured and removed by utilizing a high-voltage electric field so as to perform further purification treatment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall control principle of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a spray smoke abatement cooling system and a heat exchange cooling dehumidification system according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first separator and a second separator according to an embodiment of the present invention;
FIG. 5 is a schematic view of a heat exchange box according to an embodiment of the present invention;
FIG. 6 is a schematic view of an exhaust pipe and an intake pipe according to an embodiment of the present invention;
FIG. 7 is a schematic view of an embodiment of the present invention.
Icon: 1-a spray cabin, 110-a first partition plate, 111-a first channel, 120-a second partition plate, 121-a second channel, 122-a third channel, 130-a first pipeline, 140-a second pipeline, 150-a water draining piece, 2-a heat exchange box, 210-a heat exchange tube group, 220-a smoke discharging tube, 3-a smoke removing box, 310-an air inlet tube, 320-an air outlet tube, 4-an air mixing box, 401-a baffle plate, 410-an air inlet machine, 420-a fresh air machine and 430-a supporting frame.
Detailed Description
Examples
Referring to fig. 1-7, an embodiment of the present invention is shown.
The embodiment provides a smoke abatement and cooling device for tail gas of a diesel generator, which comprises a spray smoke abatement and cooling system, a heat exchange type cooling and dehumidifying system, a high-voltage electrostatic smoke abatement system and a mixed air cooling system which are connected with a control system and are sequentially arranged;
the spray smoke abatement cooling system comprises an air inlet cabin and a spray cabin 1 which are connected with each other, wherein the spray cabin 1 is divided into a plurality of communicated cabins through a plurality of partition boards, spiral nozzles are respectively arranged at the tops of the cabins, the spiral nozzles are connected into a first water storage tank through a first pipeline 130 and a circulating water pump, a drain piece 150 is arranged on the bottom surface of the spray cabin 1, and the drain piece 150 is connected into the first water storage tank through a second pipeline 140 and a drain pump.
In this embodiment, the partition divides the spray cabin 1 into a plurality of cabins, in this embodiment, 14 cabins are preferable (in other embodiments, the spray cabin is not limited), the circulating water pump is used to provide spray water, the spiral nozzle at the top of each cabin is supplied to spray water mist, and the spiral nozzle is used to increase the spray water mist quantity and improve the cooling effect. The labyrinth form is formed between the partition board and the spray cabin 1, and the flow direction of the smoke is guided by the partition board, so that the smoke can enter 14 cabins to be sufficiently cleaned as much as possible, and the times and time of the smoke spray cooling are prolonged.
The above-mentioned baffle includes first baffle 110 and second baffle 120, and first baffle 110 is connected with the top surface of spraying cabin 1, and first baffle 110 forms first passageway 111 with the bottom surface of spraying cabin 1, and second baffle 120 sets up in one of them side of first baffle 110, and second baffle 120 forms second passageway 121 with the bottom surface of spraying cabin 1, forms third passageway 122 with the top surface of spraying cabin 1.
It can be seen that the bottom of each cabin is communicated with the spray cabin 1, namely, the first channel 111 and the second channel 121 are communicated with the spray cabin 1, and the difference is only that the widths of the first channel 111 and the second channel 121 and the bottom surface of the spray cabin 1 are different, namely, the distance between the bottom side of the first partition 110 and the bottom surface of the spray cabin 1 is larger, and the first channel 111 is wider; the distance between the bottom side of the second partition 120 and the bottom surface of the spray booth 1 is smaller, and the second passage 121 is narrower than the first passage 111; the first partition plate 110 is fixedly connected with the top surface of the spray cabin 1 without a passage; and the second partition 120 forms a third passage 122 for gas to flow through with the top surface of the spray booth 1.
The liquid level sensor is arranged in the spray cabin 1, and the water level in the spray cabin 1 can keep the second channel 121 in a closed state through the cooperation of the liquid level sensor and the control system, but the water level can not enable the first channel 111 to be closed, so that the cross section area of the normal circulation of air flow from the first channel 111 is not affected.
In this embodiment, there are two cases of drainage:
in the first case, automatic drainage is performed when the water level rises to be flush with the drain 150. The drain 150 in this embodiment is funnel-shaped, the water level rises to a certain height, the water flow of this height can flow into the drain 150 and drain into the first reservoir autonomously, and the water level does not affect the narrowing of the first channel 111.
In the second case, when the flow rate of the shower water is large, so that the drainage speed of the drainage member 150 is far less than the speed of the water level fluctuation, and the water level narrows the first channel 111, even closes the first channel 111, so that the cross-sectional area of the flue gas channel between two adjacent cabins is reduced, and the normal circulation of the flue gas is influenced, the liquid level sensor converts data into an electric signal to be transmitted to the control system, and the control system opens the drainage pump to perform forced drainage; until the liquid level drops to be recovered to be normal, the drainage pump is turned off to stop forced drainage, so that the influence of the too low liquid level on the liquid sealing state of the second channel 121 is avoided.
The heat exchange type cooling and dehumidifying system comprises a heat exchange box 2 and a heat exchange tube group 210 arranged in the heat exchange box 2, wherein the top of the heat exchange box 2 is provided with a smoke outlet, and the smoke outlet is provided with a smoke exhaust tube 220;
the heat exchange type cooling and dehumidifying system further cools the tail gas in a water cooling and heat exchanging mode, and the system has a dehumidifying function at the same time so as to remove water vapor mixed in the tail gas in the front-end spraying and smoke eliminating system, and prevent the water vapor in the tail gas from forming water mist at an air outlet (especially in autumn and winter when the air temperature is low). The reason why the water in the second water storage tank is used alone for heat exchange by the heat exchange tube set 210 is that the circulating water in the spray cabin 1 absorbs more heat in the spraying smoke abatement process, has higher temperature, and is not suitable for water cooling, heat exchange, temperature reduction and dehumidification by the heat exchange tube set 210 after returning to the first water storage tank.
The engineering heat exchange capacity formula is deltaq=k·s·deltat·deltat, wherein deltaq is the heat exchange capacity, K is the heat transfer coefficient, S is the heat exchange area, deltat is the average temperature difference, deltat heat exchange time.
The aim is to reduce the temperature of the exhaust gas as much as possible, i.e. to increase the heat transfer capacity as much as possible, which can be achieved by increasing the heat transfer coefficient, increasing the heat transfer area, increasing the average temperature difference or increasing the heat transfer time.
(1) Improving heat transfer coefficient
The heat transfer coefficient formula of the engineering upper enclosure structure is as follows:
where R is the thermal resistance, λ is the material thermal conductivity, A is the flat wall area, and δ is the material layer thickness. It is known that the heat exchange tube should be made of metal with high heat conductivity, and the common metals with high heat conductivity are silver, copper, gold, aluminum, iron, tin and lead, because of high cost of silver and corrosion resistanceAnd L stainless steel is designed to be used as a heat exchange tube material of the heat exchanger due to comprehensive factors such as corrosion resistance, oxidation resistance and the like. The formula also shows that the thinner the material layer is, the larger the heat transfer coefficient is, but the thinner the heat exchange tube is in engineering, and the factors such as mechanical strength and the like are considered, so that the heat exchange tube of the heat exchanger adopts a thin-wall stainless steel tube with the mechanical strength meeting the requirement.
(2) Increase the heat exchange area
The heat exchange area can be increased by increasing the number of heat exchange tubes to increase the length of the heat exchange tubes as much as possible, so in this embodiment, the heat exchange tube groups 210 are multiple groups, preferably groups, each group includes a root heat exchange tube, and the three groups of heat exchange tube groups 210 are disposed in the heat exchange box 2 from top to bottom, so that the flue gas sequentially flows through the groups of heat exchange tubes to be further cooled and dehumidified.
(3) Increase the heat exchange time
There are two methods for increasing the heat exchange time, namely, by slowing down the flow speed of the tail gas in the heat exchange type cooling and dehumidifying system, the flow speed of the tail gas is slowed down, and meanwhile, the flow rate of the tail gas discharged by the diesel generator cannot be reduced, because once the flow rate of the tail gas is reduced, the exhaust back pressure of the diesel engine is increased, thereby reducing the working efficiency and the service life of the diesel engine, and greatly increasing the fuel consumption.
From the flow formula, it can be seen that: q=a·v, where Q is flow, a is cross-sectional area, and V is flow rate. Under the condition of keeping the flow unchanged, the flow speed of the tail gas in the heat exchange box 2 in the heat exchange type cooling and dehumidifying system can be reduced by increasing the cross-sectional area of the heat exchange box 2, and the reduction of the flow speed of the tail gas in the heat exchange box 2 is equivalent to the increase of the heat exchange time of the tail gas, so that in the embodiment, the cross-sectional area of the heat exchange box 2 is larger than the cross-sectional area of the spray cabin 1, and the heat exchange time is increased under the condition of unchanged flue gas flow so as to achieve better heat exchange, cooling and dehumidifying effects.
Secondly, the longitudinal length of the heat exchange box 2 is increased, namely the time for heat exchange, temperature reduction and dehumidification of tail gas is increased by increasing the length of the heat exchange box 2 in the smoke flowing direction, but the longitudinal length of the heat exchange box 2 cannot be prolonged without limit due to the limitation of engineering environment space, and can be prolonged appropriately only under the condition of permission.
In summary, the invention can obviously reduce the temperature of the tail gas and dehumidify the tail gas through the heat exchange type cooling and dehumidifying system. Under the condition that the water consumption of cooling water is not considered, the effect of reducing the temperature of the tail gas is limited by the temperature of the cooling water (namely a cold source), namely the tail gas cooling in the system has a limit, namely the temperature of the water in an internal reservoir is the limit value of the temperature reduction of the tail gas, namely the limit value of the temperature reduction of the tail gas is reduced to be consistent with the temperature of the water in the reservoir, the effect of spraying cooling and heat exchange cooling on engineering cannot be accurately quantified, and the consumption of the cooling water cannot be considered in practical application, so that the heat exchange type cooling and dehumidifying system matched with the spraying smoke abatement cooling system cannot fundamentally ensure that the cooling effect of the tail gas reaches a target temperature value.
Therefore, the invention designs the air mixing cooling system, and the high-voltage electrostatic smoke abatement system is used for purifying the flue gas again before the tail gas is led into the air mixing cooling system.
The high-voltage electrostatic smoke abatement system comprises a smoke abatement box 3, an exhaust pipe 320 and an air inlet pipe 310 which are arranged in the smoke abatement box 3, wherein the air inlet pipe 310 is connected with the heat exchange box 2 through a smoke exhaust pipe 220, and a high-voltage source is arranged in the smoke abatement box 3; the system utilizes a high-voltage direct-current electric field to ionize gas molecules in the air, generates a large number of electrons and ions, moves towards two poles under the action of the electric field force, and contacts dust particles in the air flow to charge the dust particles in the moving process, so that the charged particles move towards pole plates with opposite charges under the action of the electric field force. Under the action of an electric field, free ions in the air move towards two poles, and the higher the voltage is, the higher the electric field intensity is and the faster the movement speed of the ions is. Due to the movement of ions, an electrical current is formed between the electrodes. Initially, the free ions in the air are less and the current is less. After the voltage is raised to a certain value, ions near the discharge electrode acquire high energy and speed, and when the ions strike neutral atoms in the air, the neutral atoms are decomposed into positive ions and negative ions, and the phenomenon is called air ionization. After air ionization, the number of ions moving between electrodes is greatly increased due to chain reaction, which is shown by the sharp increase of current between electrodes (called corona current), the air becomes a conductor, and high-strength voltage captures black smoke particles to make them negatively charged and captured by a positive plate under the action of an electric field, so that the effect of removing dust in smoke is realized.
In the embodiment, the air inlet pipe 310 and the air outlet pipe 320 are square conical, so that the flow speed of the flue gas in the smoke removal chamber is gradually slowed down and evenly diffused, and fine particles in the flue gas are favorably captured and removed by a high-voltage electrostatic field; the outlet aperture of the exhaust pipe 320 is larger than the inlet aperture of the air inlet pipe 310, so that the smoke flow resistance and the smoke flow rate can be reduced, and the smoke purifying effect of the high-voltage electrostatic smoke abatement system can be improved.
The air mixing cooling system comprises an air mixing box 4, an air inlet machine 410 and a fresh air machine 420, wherein the air inlet machine 410 and the fresh air machine 420 are connected with the air mixing box 4, the air inlet machine 410 is connected with the air mixing box 4 through an exhaust pipe 320, a plurality of baffles 401 are arranged in the air mixing box 4, the air mixing box 4 is divided into a plurality of sections of air chambers by the plurality of baffles 401, and therefore the purpose that tail gas and fresh air are fully mixed for heat convection and heat conduction cooling is achieved.
In this embodiment, in order to reduce the size of the whole device and save the occupied area, the air mixing box 4 is placed on the supporting frame 430, and the air inlet fan 410 and the fresh air fan 420 are arranged below the supporting frame 430. And a gas inlet fan 410 is connected between the gas mixing box 4 and the smoke removing box 3, so that the smoke is pumped into the gas mixing box 4, and meanwhile, negative pressure is formed among the spray cooling smoke removing system, the heat exchange type cooling smoke removing system and the high-voltage electrostatic smoke removing system, so that the smoke is prevented from flowing smoothly, and the back pressure of the diesel generator is prevented from being increased.
In this embodiment, temperature sensors may be added to the spraying smoke abatement cooling system and the air mixing cooling system, for example, a temperature sensor is installed at the outlet of the air inlet machine 410, the temperature of the flue gas after spraying cooling and heat exchange cooling is measured and referred to as the temperature before air mixing, the temperature before air mixing is compared with the target temperature, and if the target temperature value is not reached yet, the control system starts the air mixing cooling system to perform air mixing cooling.
A temperature sensor is arranged in the air mixing box 4, and the measured temperature value controls a frequency converter to adjust the rotation speed of the fresh air machine 420 so as to adjust the air mixing quantity, thereby realizing the aim of cooling the air mixing.
Besides, a temperature sensor can be added at any other position according to the use requirement, for example, the tail part of the diesel generator set is provided with the temperature sensor so as to measure the real-time initial temperature of the exhaust gas; and a temperature sensor is arranged at the tail end of the integral device to obtain the final real-time temperature of the tail gas discharged after the whole process treatment.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The tail gas smoke elimination and cooling device of the diesel generator is characterized by comprising a spraying smoke elimination and cooling system, a heat exchange type cooling and dehumidifying system, a high-voltage electrostatic smoke elimination system and a mixed air cooling system which are connected with a control system and are sequentially arranged;
the spraying smoke abatement cooling system comprises an air inlet cabin and a spraying cabin which are connected with each other, the spraying cabin is divided into a plurality of communicated cabins through a plurality of partition boards, spiral nozzles are respectively arranged on the top surfaces of the cabins, the spiral nozzles are connected into a first water storage tank through a first pipeline and a circulating water pump, a drainage piece is arranged on the bottom surface of the spraying cabin, and the drainage piece is also connected into the first water storage tank through a second pipeline and a drainage pump;
the heat exchange type cooling and dehumidifying system comprises a heat exchange box and a heat exchange tube group arranged in the heat exchange box, wherein the heat exchange tube group is connected with a second water storage tank through a pipeline, the top of the heat exchange box is provided with a smoke outlet, and the smoke outlet is provided with a smoke exhaust pipe;
the high-voltage electrostatic smoke abatement system comprises a smoke abatement box, an exhaust pipe and an air inlet pipe, wherein the exhaust pipe and the air inlet pipe are arranged in the smoke abatement box, the air inlet pipe is connected with the heat exchange box through the smoke exhaust pipe, and a high-voltage source is arranged in the smoke abatement box;
the air mixing cooling system comprises an air mixing box, an air inlet machine and a fresh air machine, wherein the air inlet machine and the fresh air machine are connected with the air mixing box, the air inlet machine is connected with the air mixing box through an exhaust pipe, a plurality of baffles are arranged in the air mixing box, and the baffles divide the air mixing box into a plurality of sections of air chambers.
2. The exhaust smoke abatement and temperature reduction device for a diesel generator according to claim 1, wherein the partition plate comprises a first partition plate and a second partition plate, the first partition plate is connected with the top surface of the spray cabin, the first partition plate and the bottom surface of the spray cabin form a first channel, the second partition plate is arranged on one side of the first partition plate, the second partition plate and the bottom surface of the spray cabin form a second channel, and the second partition plate and the top surface of the spray cabin form a third channel.
3. The tail gas smoke abatement and temperature reduction device of a diesel generator according to claim 1, wherein the heat exchange tube groups are multiple groups, each group comprises a plurality of heat exchange tubes, and the multiple groups of heat exchange tube groups are arranged in the heat exchange box from top to bottom.
4. The exhaust smoke abatement and temperature reduction device for a diesel generator according to claim 1, wherein the exhaust pipe and the air inlet pipe are both square conical, and the outlet aperture of the exhaust pipe is larger than the inlet aperture of the air inlet pipe.
5. The tail gas smoke elimination and temperature reduction device for a diesel generator according to claim 1, wherein the air mixing box is arranged on a supporting frame, and the air inlet fan and the fresh air fan are arranged on the lower side of the supporting frame.
6. The diesel generator tail gas smoke abatement and temperature reduction device according to claim 1, wherein the spray cabin is provided with a liquid level sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211695786.4A CN116181450A (en) | 2022-12-28 | 2022-12-28 | Tail gas smoke elimination cooling device of diesel generator |
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| CN202211695786.4A CN116181450A (en) | 2022-12-28 | 2022-12-28 | Tail gas smoke elimination cooling device of diesel generator |
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| CN211692610U (en) * | 2020-03-20 | 2020-10-16 | 河北煜剑节能技术有限公司 | Smoke prevention and dust control device for tail gas of diesel engine |
| CN111829361A (en) * | 2020-08-03 | 2020-10-27 | 北京华新创科信息技术有限公司 | Smoke abatement cooling system |
| CN112484138A (en) * | 2020-11-28 | 2021-03-12 | 杭州兔研工业设计有限公司 | Domestic natural gas heating system |
| CN213478443U (en) * | 2020-10-09 | 2021-06-18 | 黄山天之都环保科技有限公司 | Diesel generator station tail gas treatment and cooling integrated device |
| CN213654956U (en) * | 2020-12-07 | 2021-07-09 | 中国人民解放军火箭军工程大学 | Smoke abatement cooling system of diesel generating set |
| WO2021212626A1 (en) * | 2020-04-24 | 2021-10-28 | 江苏海事职业技术学院 | Desulfurization tower-based exhaust recirculation device for ship diesel engine |
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2022
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| CN109252918A (en) * | 2018-09-30 | 2019-01-22 | 金涛 | A kind of Fractions of Diesel Engine Exhaust Particulates object processing system |
| CN111365774A (en) * | 2020-03-08 | 2020-07-03 | 中国人民解放军火箭军工程设计研究院 | Smoke-eliminating, dehumidifying and temperature-regulating system for diesel engine of underground engineering |
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| WO2021212626A1 (en) * | 2020-04-24 | 2021-10-28 | 江苏海事职业技术学院 | Desulfurization tower-based exhaust recirculation device for ship diesel engine |
| CN111829361A (en) * | 2020-08-03 | 2020-10-27 | 北京华新创科信息技术有限公司 | Smoke abatement cooling system |
| CN213478443U (en) * | 2020-10-09 | 2021-06-18 | 黄山天之都环保科技有限公司 | Diesel generator station tail gas treatment and cooling integrated device |
| CN112484138A (en) * | 2020-11-28 | 2021-03-12 | 杭州兔研工业设计有限公司 | Domestic natural gas heating system |
| CN213654956U (en) * | 2020-12-07 | 2021-07-09 | 中国人民解放军火箭军工程大学 | Smoke abatement cooling system of diesel generating set |
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