CN1631493A - Wet method fume gas desulfurizing method and device - Google Patents
Wet method fume gas desulfurizing method and device Download PDFInfo
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- CN1631493A CN1631493A CN 200410090734 CN200410090734A CN1631493A CN 1631493 A CN1631493 A CN 1631493A CN 200410090734 CN200410090734 CN 200410090734 CN 200410090734 A CN200410090734 A CN 200410090734A CN 1631493 A CN1631493 A CN 1631493A
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Abstract
The invention unfurls a kind of way of taking off the sulphur by wet smoke and its equipment. The way uses the alkaline object from coal burnt to take off the sulphur. The equipment involves: removing dusk machine of wet smoke, removing mist machine of taking off water, and also include pond for taking off the alkaline object, water pond and the pond of taking off the sulphur. In the removing dusk machine of wet smoke, there are chemical reaction between smoke and the liquid for taking off the sulphur, taking off the pollution of the sulphur into acid water, used for recycling. The smoke is brought to the air after taking off the mist. Start smoke-water separated machine at certain times to prevent the system wearing knot, eject the dusk water after removing them. The way and the equipment have the strong function between liquid and air, using little water and eject little too, large field to use, eject dusk while taking off the sulphur, cost little when separating and investing.
Description
The technical field is as follows:
the invention relates to the technical field of flue gas desulfurization suitable for large and medium-sized coal-fired industrial boilers, in particular to a wet flue gas desulfurization method and a wet flue gas desulfurization device for treating wastes with processes of wastes against one another for the large and medium-sized coal-fired industrial boilers.
Background art:
as is well known, there are several methods for removing sulfur dioxide from coal-fired flue gas, including limestone/lime-gypsum method, double alkali method, flue gas circulating fluidized bed method, etc. flue gas desulfurization techniques, in which limestone (CaCO) is used3) Desulfurizing agents such as lime (CaO), caustic soda (NaOH) and the like are prepared into desulfurization solution, and the desulfurization solution is injected into a desulfurization reactor to react with sulfur dioxide in flue gas to generate sulfite and sulfate which are removed. Therefore, in all of the methods, a set of devices for preparing, storing and conveying the desulfurizer and collecting and removing by-products of the desulfurizer are required to be arranged in a desulfurization process system, so that the whole desulfurization system is large in size and numerous in supporting equipment, and in addition, the desulfurizer needs to be purchased, so that the equipment investment and the operating cost of the system are increased.
The invention content is as follows:
the invention aims to provide a wet flue gas desulfurization method and a device thereof, which utilize alkaline waste discharged by a coal-fired boiler as a desulfurizer to remove sulfur dioxide carried in coal-fired flue gas.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a wet flue gas desulfurization method comprises the following steps:
1) dissolving out alkaline substances in the coal cinder and forming circulation of cinder flushing water: the slag flushing water is led out from the rear part of the alkaline substance dissolving tank through a slag flushing pump, so that ash slag generated after coal in the boiler is combusted flows into the alkaline substance dissolving tank along with the slag flushing water, is mixed and converged with the acidic ash water discharged by the wet flue gas desulfurization dust remover, and gradually dissolves the alkaline substance in the ash slag under the dual actions of the acidic ash water and hydraulic stirring to form the circulation of the slag flushing water;
2) primary filtration: filtering the mixed liquid of the ash residue water and the acidic ash water, and then flowing into a water collecting tank;
3) mixing: the solution is merged with alkaline sewage discharged by a boiler in a water collecting tank;
4) secondary filtration: filtering the merged solution to further filter out fine particles, and thenflowing into a desulfurization solution pool to form desulfurization solution;
5) flue gas desulfurization: the desulfurization liquid enters a wet-type flue gas desulfurization dust remover to perform chemical reaction with flue gas discharged from a coal-fired boiler in the device, so as to remove sulfur dioxide pollutants;
6) and (3) circulation of a desulfurization solution: the generated acidic grey water flows into the front end of the alkaline substance dissolving tank after the desulfurization of the flue gas by the desulfurization solution to form desulfurization solution circulation;
7) dehydrating and demisting the flue gas: dehydrating and demisting the desulfurized flue gas by a dehydration demister, and then discharging the flue gas into the atmosphere;
8) and (3) timed grey-water separation: injecting the solution in the water collecting tank into a grey-water separator at regular time, and discharging the separated water from a water outlet pipe at the top of the grey-water separator for reuse; the slurry flows into an alkaline substance dissolving tank from a slurry hopper, and meanwhile, a proper amount of clear water is supplemented to the system to form circulation of external drainage;
the alkalinity of the boiler alkaline sewage is 8mmol/L-20mmol/L, and the pH value is 10-12;
the concentration of suspended matters in the water separated by the grey-water separator is less than or equal to 100 mg/L;
the time for separating the grey water is 1-24 hours.
A device for realizing a wet flue gas desulfurization method comprises a wet flue gas desulfurization dust remover, a dehydration demister, a grey water separator, an alkaline substance dissolving tank, a water collecting tank and a desulfurization liquid tank; the flue gas discharged from the coal-fired boiler enters the inlet of a wet flue gas desulfurization dust remover; the flue gas outlet of the wet flue gas desulfurization dust remover is connected with the inlet of the dehydration demister; the outlet of the dehydration demister is connected with a chimney through an induced draft fan; the alkaline substance dissolving tank, the water collecting tank and the desulfurization liquid tank are respectively water tanks built by concrete; the alkaline substance dissolving tank is connected with a discharge port at the lower part of the flue gas desulfurization dust remover; a first filter grid is arranged between the alkaline substance leaching tank and the water collecting tank; a second filter grid is arranged between the water collecting tank and the desulfurization liquid tank; the water collecting tank is connected with an alkaline sewage draining port discharged by the boiler; the water collecting tank is connected with the inlet of the ash-water separator through a mortar liquid pump; the bottom of the ash-water separator is provided with a mud bucket which is connected with an alkaline substance dissolving tank; the top of the ash-water separator is provided with a water outlet pipe which is connected with an alkaline substance dissolving tank; the desulfurization liquid pool is connected with a water distribution system of the wet-type flue gas desulfurization dust remover by a desulfurization liquid circulating pump.
The wet flue gas desulfurization method and the device thereof provided by the invention have the working principle that: coal and its production methodIn ash generated by combustion in a boiler, calcium oxide (CaO), magnesium oxide (MgO), and sodium oxide (Na)2O), potassium oxide (K)2O) and the like, can dissolve the alkaline substances under certain conditions (mainly controlling the pH value of the leaching solution and the contact time of the leaching solution and ash) and has the function of neutralizing acidic substances; ferric oxide (Fe) in ash2O3) And aluminum oxide (Al)2O3) Are amphoteric compounds which can be dissolved out under acidic conditions to neutralize the acidic substances. In addition, the boiler feed water contains a large amount of carbonate hardness, and in order to prevent the salt in the feed water from scaling inside the heating surface of the boiler during the operation of the boiler and influencing the safe and economic operation of the boiler, the feed water of the boiler needs to be subjected to sodium ion exchange treatment in advance to ensure that the hardness (mainly calcium salt and magnesium salt) in the feed water, namely Ca in calcium and magnesium compounds which are easy to generate scale2+、Mg2+Na in the exchanged agent+The ion is replaced by sodium bicarbonate (NaHCO) which does not form scale3) It is decomposed into sodium carbonate (Na) by heating in boiler water2CO3) Namely, soda ash, is an ideal desulfurizing agent. The reaction is as follows:
in sodium ion exchange:
after heating in the furnace:
in order to ensure that the calcium and magnesium products in the boiler water do not adhere to the heating surface in the boiler in the form of scale and are forced to crystallize out in the boiler water to form dispersed water slag precipitate, the alkalinity of the boiler water is required to be kept between 8mmol/L and 20mmol/L, the pH value is required to be 10 to 12, and in order to keep the alkalinity, the boiler water is required to be periodically discharged according to the operation process of the boiler. Therefore, the boiler blow-off water is also a cheap desulfurizer.
The wet flue gas desulfurization method provided by the invention comprises the following process flows: ash and slag generated after coal is combusted in a boiler flows into an alkaline substance dissolution tank together with slag flushing water under the impact of the slag flushing water, is mixed with acidic ash water discharged by a wet-type flue gas desulfurization dust remover, most of the ash and slag are gradually deposited in the alkaline substance dissolution tank in the time of flowing through the alkaline substance dissolution tank, alkaline substances in the ash and slag are gradually dissolved under the dual actions of the acidic ash water and hydraulic stirring, then the mixed ash water flows through a first filter grid from the tail part of the alkaline substance dissolution tank and enters a water collecting tank, and when fine particles in the mixed ash and slag are removed, the alkaline substances in the ash and slag are further dissolved; the mixed grey water in the collecting tank is converged with the alkaline sewage discharged by the boiler, and when the mixed grey water flows through the second filter grid, the micro particles are further removed, and then the desulfurizing liquid prepared flows into a desulfurizing liquid tank of a water circulating system. The desulfurization liquid is pumped into a wet flue gas desulfurization dust remover through a desulfurization liquid circulating pump, the desulfurization liquid in the device passesthrough a three-level water distribution system and a tower plate group, is fully mixed and contacted with flue gas flowing in from a boiler, and the desulfurized clean flue gas is discharged into the atmosphere through a draught fan and a chimney after being dehydrated and demisted; the acidic grey water generated after the sulfur dioxide in the flue gas is removed flows into the front end of the alkaline substance dissolving tank to form the circulation of the desulfurization solution; the mixed grey water is introduced into the water collecting tank through a grey water separator once after 1-24 hours, and the mixed grey water is reused after passing through a condensation zone, a precipitation zone and a filtering zone in the device, and a proper amount of clear water is supplemented; and a small part of the concentrated mortar flows through the front part of the alkaline substance dissolving tank to form an effluent circulation.
From the working principle, compared with the prior wet flue gas desulfurization method and device, the invention has the following beneficial effects:
1) the desulfurization effect is good, and simultaneously can remove fine dust:
the wet flue gas desulfurization dust remover has a three-stage water distribution system and a tower plate group, so that flue gas is fully contacted with desulfurization liquid, the effect of good gas-liquid mass transfer performance is achieved, the desulfurization efficiency is high, and fine dust is removed.
2) The environmental pollution is reduced:
the invention is provided with a plurality of pools to form a plurality of water circulation systems inside, thereby reducing the discharge of waste, namely reducing the pollution to the environment.
3) The cost is low:
the invention dissolves out the alkaline substance in the waste-ash slag discharged when the boiler is burning, and the alkaline substance is merged with the waste water discharged by the boiler to be used as the desulfurization solution, the method for treating the waste by the waste reduces the investment of equipment and the operating cost thereof, in addition, the water is recycled, thereby saving the resources and simultaneously reducing the cost.
Description of the drawings:
FIG. 1: schematic diagram of wet-type flue gas desulfurization device using waste to treat waste.
The specific implementation mode is as follows:
the invention adopts a wet flue gas desulfurization method and a device for discharging alkaline substances by a coal-fired boiler, and is matched with a boiler with evaporation capacity of 35t/h, and the treated flue gas quantity is 100000m3Boiler flue gas per hour.
As shown in the figure: the desulfurization method comprises the following steps:
1) dissolving out alkaline substances in the coal cinder and forming circulation of cinder flushing water: the slag flushing water is led out from the rear part of the alkaline substance leaching tank 14 through the slag flushing pump 13, so that ash and slag generated after coal in the boiler is combusted flows into the alkaline substance leaching tank 14 along with the slag flushing water, is mixed and converged with the acidic ash and water discharged by the wet flue gas desulfurization dust remover 2, and gradually leaches the alkaline substances in the ash and slag under the dual actions of the acidic ash and water power stirring, and simultaneously forms the circulation of the slag flushing water;
2) primary filtration: filtering the mixed liquid of the ash water and the acidic ash water, and then flowing into a water collecting tank 16;
3) mixing: the above solution is merged with the alkaline sewage discharged from the boiler in the water collecting tank 16;
4) secondary filtration: filtering the merged solution to further filter fine particles, and then flowing into a desulfurization solution pool 19 to form desulfurization solution;
5) flue gas desulfurization: the desulfurization solution enters a wet type flue gas desulfurization dust remover 2 and chemically reacts with flue gas 1 discharged from a coal-fired boiler in the device to remove sulfur dioxide pollutants;
6) and (3) circulation of a desulfurization solution: the generated acidic grey water flows into the front end of the alkaline substance dissolving tank 14 after the desulfurization of the flue gas by the desulfurization solution to form the circulation of the desulfurization solution;
7) dehydrating and demisting the flue gas: the desulfurized flue gas is dehydrated and demisted by a dehydration demister 9 and then discharged into the atmosphere;
8) and (3) timed grey-water separation: injecting the solution in the water collecting tank 16 into the grey-water separator 22 every 8 hours, discharging the separated water with the concentration of suspended matters less than or equal to 100mg/L from a water outlet pipe 12 at the top of the grey-water separator for reuse, and supplementing a proper amount of clear water; the slurry flows from the slurry hopper 7 into the alkaline substance elution tank 14, and the circulation of the external drainage is formed.
The alkalinity of the boiler alkaline sewage17 is 10mmol/L, and the pH value is 10.5.
The device for realizing the wet flue gas desulfurization method comprises a wet flue gas desulfurization dust remover 2, a dehydration demister 9, a grey water separator 22, an alkaline substance dissolution pool 14, a water collecting pool 16 and a desulfurization liquid pool 19; the flue gas 1 discharged from the coal-fired boiler enters the inlet of a wet flue gas desulfurization dust remover 2; the flue gas outlet of the wet flue gas desulfurization dust remover 2 is connected with the inlet of the dehydration demister 9 through a pipeline; the outlet of the dehydration demister 9 is connected with a chimney 11 through a draught fan 10; the alkaline substance dissolving tank 14, the water collecting tank 16 and the desulfurization liquid tank 19 are water tanks built by concrete and are integrated together, and are divided into three water containing spaces which are independent from each other and are mutually connected by three water walls and two filter grids; the alkaline substance dissolving tank 14 is connected with a discharge port 8 at the lower part of the flue gas desulfurization dust remover; a first filter grid 15 is arranged between the alkaline substance leaching tank 14 and the water collecting tank 16; a second filter grid 18 is arranged between the water collecting tank 16 and the desulfurization liquid tank 19; the water collecting tank 16 is connected with an alkaline sewage draining port 17 discharged by the boiler through a pipeline; the water collecting tank 16 is connected with the inlet of a grey-water separator 22 through a slurry pump 21 and a pipeline; a water outlet pipe 12 is arranged at the top of the ash-water separator 22 and is connected with an alkaline substance dissolving tank 14; the desulfurization liquid pool 19 is connected with the water distribution systems 3, 4 and 5 of the wet flue gas desulfurization dust collector 2 by a desulfurization liquid circulating pump 20.
Wherein: the wet flue gas desulfurization dust remover 2 adopts the patent (application number is 2004200481440.6) of the application, the diameter is 2.5 meters, and the total height is 13.6 meters; the dewatering demister 9 adopts the patent (application number is 03245346.9) of the application, and is of a wave-shaped folded plate group type; the grey water separator 22 is the one described in this application (application No. 200420047915. x); the alkaline material dissolution tank 14 is 10m by 5 m; the water collecting pool 16 and the desulfurization liquid pool 19 are 5 m by 5 m, respectively.
Flue gas 1 discharged from a coal-fired boiler enters a wet-type combined flue gas desulfurization dust remover 2 with the diameter of 2.5 meters and the total height of 13.6 meters through a flue, a first-stage water distribution system 3, a second-stage water distribution system 4, a third-stage water distribution system 5 and a tower plate group 6 are arranged in the device, the flue gas is fully mixed and contacted with desulfurization liquid dissolved and converged by boiler alkaline substances when flowing through the region, sulfur dioxide in the flue gas and calcium, magnesium and other ions in the desulfurization liquid are subjected to chemical reaction, and generated desulfurization byproducts such as sulfate, sulfite and the like are discharged from a discharge port 8 at the lower part of the flue gas desulfurization dust remover along with water flow and enter a water circulation system. When the boiler is used for burning medium-low sulfur coal, the concentration of sulfur dioxide in the desulfurized flue gas can reach below the limit value regulated by GB13271 'emission standard of atmospheric pollutants for boiler'. And introducing the desulfurized flue gas into a dehydration demister 9 with the resistance of only about 100Pa and the water mist removal efficiency of 97-99%, and discharging the flue gas subjected to water mist removal into a chimney 11 through a draught fan 10.
When ash slag generated after coal in a boiler burns flows into an alkaline substance dissolving tank 14 and is converged with acidic ash water discharged by a desulfurization dust remover, under the dual action of the acidic ash water and hydraulic stirring, alkaline substances in the ash slag are gradually dissolved out, large-particle ash slag is deposited in the alkaline substance dissolving tank 14, fine ash slag particles are removed through a first filter grid 15 and then flows into a water collecting tank 16, the fine ash slag particles are converged with alkaline sewage 17 discharged by the boiler, then the mixture flows through a second filter grid 18, and the fine particles are further filtered and then flows into a desulfurization liquid tank 19.
The desulfurization liquid circulating pump 20 pumps the desulfurization liquid from one side of the desulfurization liquid pool and then the desulfurization liquid is pumped into the wet-type combined flue gas desulfurization dust remover, thereby realizing the flow of the flue gas desulfurization process.
In order to prevent the scaling phenomenon caused by the concentration of the desulfurization byproducts in the water circulation system, the invention is provided with the ash-water separator 22 and the mortar liquid pump 21, water is pumped from one side of the water collecting tank every 8 hours, the concentration of suspended matters in water can be lower than 100mg/L after separation, and the suspended matters are discharged out of the system from the water outlet pipe 12 at the top of the ash-water separator, so that the concentration of the desulfurization byproducts in the water is reduced, and the scaling is prevented. The concentrated slurry is discharged from the slurry hopper 7 and flows into the alkaline substance-leaching tank 14.
It can be seen from the above working principle that the invention has the advantages of strong gas-liquid mass transfer, cyclic utilization of desulfurization liquid, small water consumption, wide application range, low investment and operation cost, and removal of fine smoke dust while desulfurizing, compared with the existing wet flue gas desulfurization method and device.
Claims (5)
1. A wet flue gas desulfurization method is characterized in that:
1) dissolving out alkaline substances in the coal cinder and forming circulation of cinder flushing water: the slag flushing water is led out from the rear part of the alkaline substance dissolving tank (14) through a slag flushing pump (13), so that ash slag generated after coal in the boiler is combusted flows into the alkaline substance dissolving tank (14) along with the slag flushing water, is mixed and converged with the acidic ash water discharged by the wet flue gas desulfurization dust remover (2), and gradually dissolves the alkaline substance in the ash slag under the dual functions of the acidic ash water and hydraulic stirring, and meanwhile, the circulation of the slag flushing water is formed;
2) primary filtration: filtering the mixed liquid of the ash residue water and the acidic grey water, and then flowing into a water collecting tank (16);
3) mixing: the solution is merged with alkaline sewage discharged from a boiler in a water collecting tank (16);
4) secondary filtration: filtering the merged solution to further filter out fine particles, and then flowing into a desulfurization solution pool (19) to form desulfurization solution;
5) flue gas desulfurization: the desulfurization solution enters a wet typeflue gas desulfurization dust remover (2) and chemically reacts with flue gas (1) discharged from a coal-fired boiler in the device to remove sulfur dioxide pollutants;
6) and (3) circulation of a desulfurization solution: the generated acidic grey water flows into the front end of the alkaline substance dissolving tank (14) after the desulfurization liquid desulfurizes the flue gas, so as to form the circulation of the desulfurization liquid;
7) dehydrating and demisting the flue gas: the desulfurized flue gas is dehydrated and demisted by a dehydration demister (9) and then is discharged into the atmosphere;
8) and (3) timed grey-water separation: the solution in the water collecting tank (16) is injected into a grey-water separator (22) at regular time, the separated water is discharged from a water outlet pipe (12) at the top of the grey-water separator for reuse, the slurry flows into an alkaline substance dissolving tank (14) from a slurry hopper (7), and meanwhile, a proper amount of clear water is supplemented to the system; forming the circulation of the external drainage.
2. The wet flue gas desulfurization method according to claim 1, characterized in that: the alkalinity of the boiler alkaline sewage is 8mmol/L-20mmol/L, and the pH value is 10-12.
3. The wet flue gas desulfurization method according to claim 1, characterized in that: the concentration of suspended matters in the water separated by the grey water separator (22) is less than or equal to 100 mg/L.
4. The wet flue gas desulfurization method according to claim 1, characterized in that: the time for separating the timed grey water is 1-24 hours.
5. An apparatus for carrying out the wet flue gas desulfurization method of claim 1, comprising a wet flue gas desulfurization dust separator (2), a dewatering mist eliminator (9), a grey water separator (22), characterized in that: the device also comprises an alkaline substance dissolving tank (14), a water collecting tank (16) and a desulfurization liquid tank (19); the flue gas (1) discharged by the coal-fired boiler enters the inlet of a wet flue gas desulfurization dust remover (2); the flue gas outlet of the wet flue gas desulfurization dust remover (2) is connected with the inlet of a dehydration demister (9); the outlet of the dehydration demister (9) is connected with a chimney (11) through an induced draft fan (10); the alkaline substance dissolving tank (14), the water collecting tank (16) and the desulfurization liquid tank (19) are respectively concrete built water tanks; the alkaline substance dissolving tank (14) is connected with a discharge port (8) at the lower part of the flue gas desulfurization dust remover; a first filter grid (15) is arranged between the alkaline substance leaching tank (14) and the water collecting tank (16); a second filter grid (18) is arranged between the water collecting tank (16) and the desulfurization liquid tank (19); the water collecting tank (16) is connected with an alkaline sewage draining port (17) discharged by the boiler; the water collecting tank (16) is connected with the inlet of a grey-water separator (22) through a slurry pump (21); a mud bucket (7) is arranged at the bottom of the grey-water separator (22), and the mud bucket (7) is connected with an alkaline substance dissolution pool (14); a water outlet pipe (12) is arranged at the top of the grey-water separator (22) and is connected with an alkaline substance dissolving tank (14); the desulfurization liquid pool (19) is connected with the water distribution systems (3), (4) and (5) of the wet flue gas desulfurization dust remover (2) by a desulfurization liquid circulating pump (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410090734 CN1631493A (en) | 2004-11-10 | 2004-11-10 | Wet method fume gas desulfurizing method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410090734 CN1631493A (en) | 2004-11-10 | 2004-11-10 | Wet method fume gas desulfurizing method and device |
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| CN1631493A true CN1631493A (en) | 2005-06-29 |
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| CN 200410090734 Pending CN1631493A (en) | 2004-11-10 | 2004-11-10 | Wet method fume gas desulfurizing method and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448512C (en) * | 2005-10-19 | 2009-01-07 | 中国石油化工股份有限公司 | Coal burning boiler flue gas desulfurization method and device |
| CN101972578A (en) * | 2010-09-10 | 2011-02-16 | 西昌新钒钛有限公司 | Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan |
| CN102824825A (en) * | 2012-09-12 | 2012-12-19 | 无锡光初科技服务有限公司 | Multi-effect U-shaped tube type dedusting and desulfurization integrated device of coal-fired boiler and dedusting and desulfurization method thereof |
| CN108939896A (en) * | 2018-08-30 | 2018-12-07 | 西北矿冶研究院 | Waste heat boiler water desulfurization device and method |
| CN109589767A (en) * | 2018-12-17 | 2019-04-09 | 郑州大学 | The method and apparatus of pollutant integration removing in a kind of glass furnace fume |
| CN109745813A (en) * | 2018-03-29 | 2019-05-14 | 王雅珍 | Nitre dehydration integrated tower and its application method drop in YZ type vortex mixed desulfurization and dedusting |
-
2004
- 2004-11-10 CN CN 200410090734 patent/CN1631493A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448512C (en) * | 2005-10-19 | 2009-01-07 | 中国石油化工股份有限公司 | Coal burning boiler flue gas desulfurization method and device |
| CN101972578A (en) * | 2010-09-10 | 2011-02-16 | 西昌新钒钛有限公司 | Rotary kiln flue gas treating device capable of automatically controlling blowing rate of draught fan |
| CN102824825A (en) * | 2012-09-12 | 2012-12-19 | 无锡光初科技服务有限公司 | Multi-effect U-shaped tube type dedusting and desulfurization integrated device of coal-fired boiler and dedusting and desulfurization method thereof |
| CN109745813A (en) * | 2018-03-29 | 2019-05-14 | 王雅珍 | Nitre dehydration integrated tower and its application method drop in YZ type vortex mixed desulfurization and dedusting |
| CN108939896A (en) * | 2018-08-30 | 2018-12-07 | 西北矿冶研究院 | Waste heat boiler water desulfurization device and method |
| CN109589767A (en) * | 2018-12-17 | 2019-04-09 | 郑州大学 | The method and apparatus of pollutant integration removing in a kind of glass furnace fume |
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