CN214223154U - Wet smoke plume takes off white system - Google Patents
Wet smoke plume takes off white system Download PDFInfo
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- CN214223154U CN214223154U CN202022280469.9U CN202022280469U CN214223154U CN 214223154 U CN214223154 U CN 214223154U CN 202022280469 U CN202022280469 U CN 202022280469U CN 214223154 U CN214223154 U CN 214223154U
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Abstract
The utility model belongs to the technical field of the chimney is administered and energy-conserving technique of water conservation, especially, relate to a wet cigarette feather takes off white system, including the desulfurizing tower, the cooling tower sprays, the intermediary water tank, the boiler, the desulfurization exhanst gas outlet at desulfurizing tower top and the flue gas access connection of the cooling tower lower extreme that sprays, it is equipped with the export of taking off white flue gas to spray cooling tower top, it is connected with intermediary water tank feed liquor end to spray cooling tower lower extreme export, intermediary water tank goes out the liquid end and is connected with the cooling tower upper end that sprays through first circulation pipeline, before the flue gas entry of its characterized in that desulfurizing tower, it is equipped with low temperature economizer on the confluence flue, be equipped with waste heat recovery unit between intermediary water tank and the boiler, waste heat recovery unit is including parallelly connected plate heat exchanger and the absorption heat pump that sets up between first circulation pipeline and boiler. The utility model has the advantages that: the method has obvious effect on the treatment of the wet smoke plume, can realize the combined removal of multiple pollutants, achieves the effects of emission reduction, water collection and water saving, and meets the national green and environmental protection requirements.
Description
Technical Field
The utility model belongs to the technical field of the chimney is administered and the energy-conserving technique of water conservation especially relates to a wet cigarette feather takes off white system.
Background
Because the saturated wet flue gas is discharged from the outlet of the chimney of the coal-fired power plant and is directly discharged into the atmosphere through the chimney, the phenomenon of 'big white smoke' of wet smoke plume can appear, and the acceptance of surrounding residents on near zero emission of the power plant can be greatly reduced. The water resource recycling requirement of the wet flue gas meets the policy requirement of energy saving and consumption reduction of coal-fired power plants, and also meets the strategic requirements of improving water utilization efficiency and catching industrial water conservation. Therefore, the treatment of the wet smoke plume of the coal-fired power plant is an urgent problem to be solved by the coal-fired power plant.
At present, there are three methods for treating the wet smoke plume: condensation, condensation reheating, and heating. The condensation reheating technology is the combined use of the flue gas heating technology and the flue gas condensation technology, integrates the characteristics of the heating technology and the condensation technology, and has a wider application range for the treatment of wet smoke plume. In the prior art, the mainstream dehumidification smoke plume elimination technology is that flue gas condensers and spray towers are arranged behind a desulfurization tower or slurry coolers are additionally arranged on a slurry circulating slurry pipe to cool flue gas at the outlet of the desulfurization tower to separate out moisture, and the clean flue gas is heated by using the waste heat of the raw flue gas, so that a large amount of latent heat of the steam of the clean flue gas cannot be deeply recovered, the sensible heat of the raw flue gas is wasted, and meanwhile, the condensed moisture of the flue gas needs external refrigerants, thereby causing great waste of energy and water resources. Because the current mainstream technology has the defects of energy and water resource waste and high investment cost, only investment is needed to eliminate the wet smoke plume, and no profit is obtained.
According to the requirement of smoke plume whitening in Tianjin city, only the smoke discharge temperature needs to be controlled, the airport-facing project starts from the aspects of energy conservation, environmental protection and recovery, the technical route of smoke condensation and heat recovery is finally adopted, and meanwhile, the installation space for reheating smoke is reserved. The investment cost of the low-temperature economizer, the spray cooling tower and the cooling tower is lower than that of the low-temperature economizer, the spray cooling tower and the absorption heat pump unit, but the investment cost of the low-temperature economizer, the spray cooling tower and the cooling tower is higher than that of the low-temperature economizer, the spray cooling tower and the absorption heat pump unit, the operation cost of the low-temperature economizer, the spray cooling tower and the absorption heat pump unit is higher than that of the low-temperature economizer, the spray cooling tower and the absorption heat pump unit, the waste heat recycling is only carried out before desulfurization in the aspect of waste heat utilization, the waste heat recycling is carried out before desulfurization and after desulfurization in the aspect of the waste heat utilization, and the waste heat recycling efficiency is far higher than that of the low-temperature economizer, the spray cooling tower and the absorption heat pump unit.
Through analysis and demonstration and consideration of the actual flue gas condition after wet desulphurization by the jin-energy Hongkong thermoelectric Limited company, a low-temperature economizer, a spraying direct heat exchange cooling and heat pump unit process is selected, and a flue gas heating space is reserved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a wet smoke plume de-whitening system, which has obvious effect on the treatment of wet smoke plume, can realize the combined removal of multiple pollutants, achieves the effects of emission reduction, water collection and water conservation, and meets the requirement of national green.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a wet smoke plume de-whitening system comprises a desulfurizing tower, a spray cooling tower, an intermediate water tank and a boiler, wherein a smoke inlet of the desulfurizing tower is connected with a converging flue, a desulfurized smoke outlet at the top of the desulfurizing tower is connected with a smoke inlet at the lower end of the spray cooling tower, a de-whitening smoke outlet is formed in the top end of the spray cooling tower, an outlet at the lower end of the spray cooling tower is connected with a liquid inlet end of the intermediate water tank, and a liquid outlet end of the intermediate water tank is connected with the upper end of the spray cooling tower through a first circulating pipeline to form a first circulating loop; the low-temperature economizer is positioned in front of a flue gas inlet of the desulfurizing tower and on the converging flue, the waste heat recovery unit is positioned between the intermediate water tank and the boiler, and the waste heat recovery unit comprises a plate heat exchanger and an absorption heat pump which are arranged in parallel between the first circulating pipeline and the boiler pipeline.
Preferably, for the intermediate water system, in a non-heating season, the first circulation pipeline is connected with the hot water inlet of the plate heat exchanger, and the hot water is returned to the first circulation pipeline through the hot water outlet of the plate heat exchanger after heat exchange to form a second circulation loop.
Preferably, for the intermediate water system, in a heating season, the first circulation pipeline is connected with the hot water inlet of the plate heat exchanger, the hot water outlet of the plate heat exchanger is connected with the absorption heat pump, and the hot water is cooled by the absorption heat pump and then returns to the first circulation pipeline to form a third circulation loop.
Preferably, when the boiler is used for water supplement and in non-heating seasons, the boiler is connected with the cold water inlet of the plate heat exchanger, and the cold water outlet of the plate heat exchanger is connected with the deaerator of the boiler to form a fourth circulation loop.
Preferably, when the boiler is used for supplementing water and in heating seasons, the boiler is connected with a cold water inlet of the plate heat exchanger, a cold water outlet of the plate heat exchanger is connected with the absorption heat pump, and the absorption heat pump is connected with a deaerator of the boiler to form a fifth circulation loop.
The top of the spray cooling tower is provided with a demister, the lower part of the demister and the upper part of the spray cooling tower are provided with a spray layer, and the lower part of the spray layer and the lower part of the spray cooling tower are provided with a packing layer.
Still include the water treatment unit, the water treatment unit includes medicinal cupping and cooling tower, the medicinal cupping with the cooling tower is connected, the cooling tower with the intermediary water tank is connected, the medicinal cupping with be equipped with the measuring pump between the cooling tower.
And a circulating pump is arranged on the first circulating pipeline and close to the intermediate water tank.
The utility model has the advantages that: the low-temperature economizer is additionally arranged on the converging flue, so that the smoke temperature at the inlet of the desulfurizing tower can be reduced, the water consumption of the desulfurizing tower can be reduced, the waste heat can be recovered, and the aims of saving energy and reducing consumption are fulfilled; the demister is used for separating the fog drops in the flue gas and the thicker particles in the fog drops, and the separated water directly enters the spray cooling tower to improve the overall demisting performance of the spray cooling tower. In the system of the utility model, the outlet of the desulfurizing tower is respectively provided with a set of spray cooling tower, after the desulfurized saturated flue gas enters the spray cooling tower, the circulating spray cooling is carried out, the saturated flue gas directly contacts with circulating intermediate water for heat exchange, the intermediate water is conveyed to a waste heat recovery unit formed by a plate heat exchanger and an absorption heat pump through a circulating pump for step cooling, and the temperature of the flue gas is reduced to 48 ℃ in non-heating seasons (4-10 months); the temperature is reduced to 45 ℃ in the heating season (11-3 months), and meanwhile, the waste heat of the flue gas is used for heating softened water, so that the heat efficiency of the boiler can be further improved, the coal consumption of the boiler is reduced, and the economic benefit is improved. The utility model discloses form five circulation circuit between spray cooling tower, intermediary's water tank and boiler, realized water resource and the thermal recycle of flue gas between intermediary's water tank, spray cooling tower, the boiler, not only wet cigarette rain is eliminated effectually, can all carry out waste heat recovery and utilize in addition before the desulfurization and after the desulfurization to not confine waste heat recovery and utilize before the desulfurization, energy saving and emission reduction is efficient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, the system comprises a converging flue 1, a low-temperature economizer 2, a desulfurizing tower 3, a spraying cooling tower 4, an intermediate water tank 5, a first circulating pipeline 6, a plate heat exchanger 7, an absorption heat pump 8, a chemical tank 9, a cooling tower 10, a boiler 11, a boiler 12 and a circulating pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a wet plume takes off white system takes off white process at the cigarette rain, adopts two sets of spray cooling tower 4 modes of public two sets of heat pump set as the example, but not limited to this kind of situation, and the concrete scheme is: two groups of wet smoke plume de-whitening systems are arranged, have the same structure and share the intermediary water tank 5 to perform de-whitening on wet smoke rain of the boiler 11 together. Each group of white removing systems respectively comprises a desulfurizing tower 3, a spraying cooling tower 4 and a group of waste heat recovery units. In every group takes off white system, the flue gas entry of desulfurizing tower 3 is connected with converging flue 1, low temperature economizer 2 sets up before the flue gas entry of desulfurizing tower 3, converge on flue 1, the desulfurized flue gas export at desulfurizing tower 3 top and the flue gas access connection of 4 lower extremes of spray cooling tower, 4 tops of spray cooling tower are equipped with and take off white flue gas export, two spray cooling tower 4 are connected with same intermediary's water tank 5, provide the cooling water source by intermediary's water tank 5, 4 lower extreme exports of spray cooling tower are connected with 5 feed liquor ends of intermediary's water tank, intermediary's water tank 5 goes out the liquid end and is connected with 4 upper ends of spray cooling tower through first circulation pipeline 6, and form first circulation circuit. The waste heat recovery unit is positioned between the intermediate water tank 5 and the boiler 11 and comprises a plate heat exchanger 7 and an absorption heat pump 8 which are arranged between the first circulating pipeline 6 and the boiler 11 in parallel. A circulating pump 12 is arranged on the first circulating pipeline 6 and close to the intermediate water tank 5. The method specifically comprises the following steps:
a set of low-temperature economizer 2 is arranged in each flue gas converging flue 1 in front of each desulfurizing tower 3, the temperature of the flue gas is reduced to 145 ℃, the temperature of the flue gas at the inlet of each desulfurizing tower 3 is reduced, softened water is used as a cold source, the softened water absorbs heat and is heated up to be used as water for supplementing of a boiler 11, the water consumption of the desulfurizing tower 3 can be reduced after the temperature of the flue gas is reduced, waste heat can be recovered, and the purposes of energy conservation and consumption reduction are achieved;
a set of spray cooling tower 4 is arranged at the outlet of each desulfurization tower 3, the desulfurized saturated flue gas enters the flue gas inlet at the lower end of the spray cooling tower 4 from the desulfurized flue gas outlet at the top of the desulfurization tower 3 for circulating spray cooling and directly contacts with circulating medium water for heat exchange, and the medium water is conveyed to a waste heat recovery unit of a plate heat exchanger 7 and an absorption heat pump 8 through a circulating pump 12 for gradient cooling, so that the temperature of the flue gas is reduced to 48 ℃ in non-heating seasons (4-10 months); the heating season (11-3 months) is reduced to 45 ℃, the waste heat of the flue gas is used for heating softened water, the heat efficiency of the boiler 11 can be further improved, the coal consumption of the boiler 11 is reduced, and the economic benefit is improved.
The utility model discloses an intermediary hydrologic cycle process does:
when the system is operated in a non-heating season, the first circulating pipeline 6 is connected with a hot water inlet of the plate heat exchanger 7, intermediate water enters the plate heat exchanger 7 for cooling, and returns to the first circulating pipeline 6 through a hot water outlet of the plate heat exchanger 7 after heat exchange and then returns to the spray cooling tower 4 to form a second circulating loop; when the heating system runs in a heating season, the first circulation pipeline 6 is connected with a hot water inlet of the plate heat exchanger 7, intermediate water exchanges heat with flue gas in the spray cooling tower 4 to heat up, then is cooled in the plate heat exchanger 7, a hot water outlet of the plate heat exchanger 7 is connected with the absorption heat pump 8, and returns to the first circulation pipeline 6 after being continuously cooled by the absorption heat pump 8 and then returns to the spray cooling tower 4 to form a third circulation loop.
The utility model discloses a 11 moisturizing flows of boiler do:
when the boiler is operated in a non-heating season, the boiler 11 is connected with a cold water inlet of the plate heat exchanger 7, and a cold water outlet of the plate heat exchanger 7 is connected with a deaerator of the boiler 11. The water supplemented by the boiler 11 enters the plate heat exchanger 7 for heat exchange, and then enters the deaerator of the boiler 11 to form a fourth circulation loop;
when the heating system runs in a heating season, the boiler 11 is connected with a cold water inlet of the plate heat exchanger 7, a cold water outlet of the plate heat exchanger 7 is connected with the absorption heat pump 8, and the absorption heat pump 8 is connected with a deaerator of the boiler 11. The water supplement of the boiler 11 with the temperature of 20 ℃ firstly enters the plate heat exchanger 7 to directly exchange heat with the intermediate water, and enters the absorption heat pump 8 to be continuously heated to 86 ℃ after the temperature is raised to 42 ℃, and then enters the deaerator of the boiler 11 to form a fifth circulation loop.
The utility model discloses join flue 1 between 3 at the draught fan after to desulfurizing tower and install low temperature economizer 2 additional to reduce the gas temperature of 3 entrys of desulfurizing tower, not only can reduce the water consumption of desulfurizing tower 3, and can retrieve the waste heat, reach energy saving and consumption reduction's purpose.
Simultaneously, the outlets of the two desulfurization towers 3 are respectively provided with a set of spray cooling tower 4, so that the temperature of saturated wet flue gas at the desulfurization outlet is further reduced, moisture in the flue gas is condensed out, the moisture content in the flue gas is reduced, the temperature difference between the flue gas and the atmosphere is further reduced, and the condition that the white fog is scattered at the outlet of a chimney is favorably reduced. Namely, a spray cooling tower 4 which is used for the heat exchange of the flue gas which enters from the bottom to the top and carries out the countercurrent flow with the spray water is adopted.
The flue gas becomes saturated flue gas after 3 original desulfurizing dust removals of desulfurizing tower, and the flue gas gets into from the tower lower part, sprays the layer in cooling tower 4 through spraying, discharges from tower upper portion. The gas leaving the spray bed may carry a small amount of atomized droplets, so a high efficiency demister is provided at the tower outlet. According to the principles of acceleration, centrifugal force, gravity and the like of the dust and mist remover, mist drops in the flue gas and thicker particles in the mist drops are separated, and the separated water directly enters the spray cooling tower 4 so as to improve the overall demisting performance of the spray cooling tower 4.
Collected water in the spray cooling tower 4 enters the intermediate water tank 5, then firstly enters the plate heat exchanger 7 for cooling and softened water heat exchange, then enters the absorption heat pump 8 for heat exchange with softened water to continue cooling, and then returns to the spray cooling tower 4.
Softened water after heat exchange of the low-temperature economizer 2 is mixed with softened water after the plate heat exchanger 7 and the heat pump unit are discharged and then enters the deaerator.
The two groups of spray cooling towers 4 share 2 sets of heat pump units, sewage at the bottoms of the spray cooling towers 4 is periodically pumped into a desulfurization waste water system through a sewage pump, and the sewage is uniformly treated by the desulfurization waste water system or enters a sewage pipe network after reaching the 3-level water quality of GB8978 Integrated wastewater discharge Standard after being subjected to PH value regulation, flocculation and precipitation.
After the temperature is reduced, about 7 tons of water and 5 tons of water are respectively separated out from the two spraying and cooling towers 4, the liquid level height of clear liquid on the cooling tower 10 is controlled by an automatic controller, and after the surplus water is neutralized by adding NaOH, a circulating pump 12 is driven into a desulfurization system to be used as process water supplement and demister washing water, and the like, so that the water balance is achieved.
The utility model discloses a low temperature economizer 2 is used for reducing the gas temperature of 3 entrys of desulfurizing tower, not only can reduce the water consumption of desulfurizing tower 3 to can retrieve the waste heat, reach energy saving and consumption reduction's purpose.
According to the clinical thermoelectric operation data, the exhaust gas temperature of the boiler 11 is designed to be 165 ℃ at the maximum. The low-temperature economizer 2 reduces the temperature of the flue gas from 165 ℃ to 145 ℃ under the design working condition; softened water flows in from the low-temperature section and flows out from the high-temperature section of the flue gas cooler.
The cooling section of the low-temperature economizer 2 is arranged in line along the flowing direction of flue gas, a spiral finned tube is adopted, ND steel is selected as the material of a heat exchange tube, a base tube of the heat exchange tube is a round tube, and the fins and the base tube are made of the same material. The thickness of the pipe wall is not less than 4 mm. The annual corrosion rate of the heat exchange tube is less than 0.02mm, and the corrosion allowance is 2 mm. The wall temperature of the low-temperature economizer 2 is adjustable and controllable, and an adjusting space with the temperature of more than 20 ℃ is provided to adapt to the change of coal types and loads; in addition, low load operation can ensure heat balance.
The low-temperature economizer 2 is arranged on the converging flue 1 before desulfurization, and 1 desulfurizing tower 3 is arranged for each desulfurizing tower, and 2 desulfurizing towers are arranged in total. The inlet temperature of the low-temperature economizer 2 is ensured to be constant by adopting a hot water recirculation control mode, each unit is provided with 2 variable-frequency boosting energy-saving booster pumps, and one unit is operated for standby.
The utility model discloses a 4 tops of cooling tower that sprays take off white flue gas export and be equipped with the defroster, the defroster below, 4 upper portions of cooling tower that sprays are equipped with and spray the layer, spray the layer below, spray cooling tower 4 lower parts and be equipped with the packing layer.
The spray cooling tower 4 plays a role in cooling and dust removal in coordination. 2 spraying layers and 2 packing layers are arranged in the tower, and the spraying layers adopt a large amount of water for spraying and washing; the packing layer adopts ceramic saddle ring packing, and the packing increases the heat dissipation capacity, prolongs cooling water retention time, increases heat exchange area and increases heat exchange capacity.
Every layer sprays the layer and sets up the nozzle of a certain amount, and the arrangement of nozzle guarantees that the flue gas does not have the short circuit in the whole tower, also can not appear spraying weak area, realizes that effective flue gas receives water.
The flue gas will pass through the defroster after washing, and the purpose is that the thick liquid drop that smugglies secretly in with the flue gas passes through striking defroster blade separation, along in the defroster blade channel flow direction tower to avoid getting rid of the polluted environment outside the tower along with the flue gas.
The defroster is installed on 4 upper portions of cooling tower sprays, and the blade becomes the vertical direction with the flue gas flow direction to the fog drop that the separation was smugglied secretly avoids carrying of desulfurization back gypsum rain, guarantees that export flue gas fog drop concentration is not more than 50mg Nm3(dry basis). In the selection, a ridge type demister after 3-level improvement, a layer of pipe type, a two-layer ridge type and 4 layers of washing water are considered and selected.
The demister will cover the whole cross section of the spray cooling tower 4 except the part where the supporting structure is arranged, and a blind plate or a leakage area cannot exist. The situation that any part of smoke gas between the supporting beam and the wall of the absorption tower or in the deep demisting and dedusting device is not treated and is leaked is avoided. The design, installation and operation of the demister device can ensure high availability ratio, and the liquid drop removing effect is good.
The utility model discloses still include the water treatment unit, the water treatment unit includes medicinal cupping 9 and cooling tower 10, and medicinal cupping 9 is connected with cooling tower 10, and cooling tower 10 is connected with intermediary's water tank 5, is equipped with the measuring pump between medicinal cupping 9 and cooling tower 10, is equipped with the PH meter on first circulating line 6. The two groups of wet smoke and rain white-removing systems share 1 set of medicine tank 9 and cooling tower 10, NaOH solution is adopted, 2 metering pumps are adopted, 1 metering pump runs for 1 standby, a thermal control instrument, a valve and the like are adopted, the metering pumps respectively feed medicines into the cooling tower 10 through valve control, and the pH value of water in the cooling tower 10 is 6-7, so that the corrosion of condensed water on pipelines and equipment is reduced.
The intermediate water tank 5 is internally provided with a water storage tank, and the spray cooling tower 4 and the condensed water are circularly used in the spray cooling tower 4 after fully exchanging heat with the absorption heat pump 8 through the plate heat exchanger 7. After being neutralized, part of water in the water storage tank is conveyed to the accessory desulfurization process water tank through the circulating pump 12 and is used as water supplement of the desulfurization process water tank.
The above detailed description is provided for the examples of the present invention, but the above description is only for the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (8)
1. A wet smoke plume de-whitening system comprises a desulfurizing tower, a spray cooling tower, an intermediate water tank and a boiler, wherein a smoke inlet of the desulfurizing tower is connected with a converging flue, a desulfurized smoke outlet at the top of the desulfurizing tower is connected with a smoke inlet at the lower end of the spray cooling tower, a de-whitening smoke outlet is formed in the top end of the spray cooling tower, an outlet at the lower end of the spray cooling tower is connected with a liquid inlet end of the intermediate water tank, and a liquid outlet end of the intermediate water tank is connected with the upper end of the spray cooling tower through a first circulating pipeline to form a first circulating loop; the low-temperature economizer is positioned in front of a flue gas inlet of the desulfurizing tower and on the converging flue, the waste heat recovery unit is positioned between the intermediate water tank and the boiler, and the waste heat recovery unit comprises a plate heat exchanger and an absorption heat pump which are arranged in parallel between the first circulating pipeline and the boiler.
2. The system for removing white smoke from wet smoke plume according to claim 1, wherein the first circulation pipeline is connected to the hot water inlet of the plate heat exchanger, and the hot water is returned to the first circulation pipeline through the hot water outlet of the plate heat exchanger after heat exchange.
3. The system according to claim 1, wherein the first circulation pipeline is connected to a hot water inlet of the plate heat exchanger, and a hot water outlet of the plate heat exchanger is connected to the absorption heat pump, and the hot water is cooled by the absorption heat pump and then returned to the first circulation pipeline.
4. The wet smoke plume de-whitening system of claim 1, wherein the boiler is connected with a cold water inlet of the plate heat exchanger, and a cold water outlet of the plate heat exchanger is connected with a deaerator of the boiler.
5. The system according to claim 1, wherein the boiler is connected to a cold water inlet of the plate heat exchanger, a cold water outlet of the plate heat exchanger is connected to the absorption heat pump, and the absorption heat pump is connected to a deaerator of the boiler.
6. The system for removing white from wet smoke plume according to claim 1, wherein a demister is arranged at the top of the spray cooling tower, a spray layer is arranged below the demister and above the spray cooling tower, and a packing layer is arranged below the spray layer and below the spray cooling tower.
7. The system of claim 1, further comprising a water treatment unit, wherein the water treatment unit comprises a chemical tank and a cooling tower, the chemical tank is connected to the cooling tower, the cooling tower is connected to the intermediate water tank, and a metering pump is disposed between the chemical tank and the cooling tower.
8. The system of claim 1, wherein the first circulation line is provided with a circulation pump adjacent to the intermediate water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022280469.9U CN214223154U (en) | 2020-10-14 | 2020-10-14 | Wet smoke plume takes off white system |
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| CN202022280469.9U CN214223154U (en) | 2020-10-14 | 2020-10-14 | Wet smoke plume takes off white system |
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