CN113144853A - Flue gas denitration desulfurization system - Google Patents
Flue gas denitration desulfurization system Download PDFInfo
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- CN113144853A CN113144853A CN202110505652.0A CN202110505652A CN113144853A CN 113144853 A CN113144853 A CN 113144853A CN 202110505652 A CN202110505652 A CN 202110505652A CN 113144853 A CN113144853 A CN 113144853A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a flue gas denitration and desulfurization system which comprises an ozone generator, a mixer, a distributor, a washing tower and a desulfurization tower, wherein the distributor is arranged in the mixer and is connected with the ozone generator through a pipeline, the distributor comprises a plurality of gas pipes and annular pipes, the gas pipes are arranged in an inner ring of the annular pipes, two ends of the gas pipes are respectively and rotatably connected with the annular pipes and communicated with the annular pipes, the gas pipes are provided with a plurality of gas holes, the outer walls of the gas pipes are fixedly provided with a plurality of fan blades, the washing tower is connected with the mixer, the washing tower is connected with the desulfurization tower, and an extension structure and a plurality of lime water spray heads for extending the flue gas stroke are arranged in the desulfurization tower; the flue gas denitration and desulfurization system solves the problems of low denitration and desulfurization efficiency and poor denitration and desulfurization effect of flue gas.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of flue gas treatment, in particular to a flue gas denitration and desulfurization system.
[ background of the invention ]
Flue gas desulfurization refers to the removal of sulfur oxides (SO2 and SO3) from flue gases or other industrial waste gases. The chemical principle is as follows: the SO2 in the flue gas is acidic in nature and SO2 can be removed from the flue gas by reaction with a suitable alkaline substance. The alkaline materials most commonly used for flue gas desulfurization are limestone (calcium carbonate, CaCO3), quicklime (calcium oxide, CaO) and slaked lime (calcium hydroxide, ca (oh) 2). Limestone is produced in a large quantity and is therefore relatively inexpensive, and both quicklime and slaked lime are produced from limestone by heating. Other basic substances such as sodium carbonate (soda ash), magnesium carbonate, and ammonia are sometimes used. The alkaline material used reacts with SO2 in the flue gas to produce a mixture of sulfite and sulfate salts (which may be calcium, sodium, magnesium or ammonium salts depending on the alkaline material used). The ratio between sulphite and sulphate depends on the process conditions, in some processes all sulphite is converted to sulphate. The reaction between SO2 and the alkaline substance takes place either in alkaline solution (wet flue gas desulfurization technique) or on a wet surface of a solid alkaline substance (dry or semi-dry flue gas desulfurization technique).
The flue gas denitration technology mainly comprises a dry method (selective catalytic reduction flue gas denitration, selective non-catalytic reduction denitration) and a wet method. Compared with the wet flue gas denitration technology, the dry flue gas denitration technology has the main advantages that: low basic investment, simple equipment and process, high NOx removing efficiency, no wastewater and waste treatment and difficult secondary pollution. The selective catalytic reduction SCR denitration adopts ammonia, CO or hydrocarbon and the like as a reducing agent in the presence of a catalyst, and reduces NO in flue gas to N2 in the presence of oxygen. Examples of the reducing agent for the SCR reaction include NH3, CO, and H2, and further include methane, ethylene, propane, and propylene. The removal efficiency of NO is highest when ammonia is used as the reducing gas. The SCR reaction is a redox reaction and therefore follows either a redox mechanism or a Mars-van Krevelen-type mechanism. Currently, foreign scholars have agreed that the reactant of the SCR reaction is NO, not NO2, and that O2 participates in the reaction.
The existing low-temperature flue gas denitration and desulfurization system has low efficiency and poor flue gas denitration and desulfurization effect, and sometimes the flue gas which does not reach the emission standard can be discharged to pollute the environment.
[ summary of the invention ]
Aiming at the problems, the flue gas denitration and desulfurization system is provided, and the problems of low denitration and desulfurization efficiency and poor denitration and desulfurization effect of flue gas are solved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a flue gas denitration desulfurization system comprises an ozone generator, a mixer, a distributor, a washing tower and a desulfurization tower, wherein a flue gas inlet and a flue gas outlet are respectively arranged at two ends of the mixer, the distributor is arranged in the mixer and is connected with the ozone generator through a pipeline, a gas inlet is arranged at the lower part of the washing tower, a gas outlet is arranged at the upper part of the washing tower, the gas inlet is connected with the flue gas outlet through a pipeline, a clear water spray head is arranged in the washing tower and is connected with a first circulating pump, a water pumping port of the first circulating pump is connected with the bottom of the washing tower, the gas outlet is connected with the lower part of the desulfurization tower through a pipeline, an extension structure for extending the flue gas stroke and a plurality of lime water spray heads are arranged in the desulfurization tower, the lime water spray heads are connected with a second circulating pump, and a water pumping port of the second circulating pump is connected with the bottom of the desulfurization tower, an exhaust port is formed in the upper part of the desulfurizing tower; the distributor includes many tracheas and ring pipes, the outer wall of ring pipe is fixed in the inner wall of blender, many the trachea is located the inner ring of ring pipe, tracheal both ends are rotated respectively and are connected ring pipe and intercommunication the ring pipe, the ring union coupling has the intake pipe, the intake pipe is worn out outside the blender, the intake pipe passes through the pipe connection ozone generator, the trachea is equipped with a plurality of gas pockets, tracheal outer wall is fixed with a plurality of flabellums.
Further, the blender includes the body, the internal diameter of body is dwindled gradually earlier then is expanded gradually, the distributor is located the minimum internal diameter department of body.
Further, the blender is the heliciform, and the inner wall of blender is fixed and is equipped with the blend stop, the blend stop is located between distributor and the exhanst gas outlet.
Furthermore, the stroke-extending structure comprises a plurality of groups of gas passing assemblies which are sequentially arranged from bottom to top, each gas passing assembly comprises an upper baffle and a lower baffle, the upper end of each lower baffle is fixed on the inner wall of the desulfurization tower, the lower end of each upper baffle is fixed on the inner wall of the desulfurization tower, gaps are respectively arranged between the upper end of each upper baffle and the inner wall of the desulfurization tower and between the lower end of each lower baffle and the inner wall of the desulfurization tower, and the lime water spray heads are respectively fixed on the tops of the upper baffles, the lower baffles and the desulfurization tower.
Furthermore, the extension structure comprises a surrounding plate, the surrounding plate is spirally arranged from outside to inside, the lower end of the surrounding plate is fixed at the bottom of the desulfurization tower, the sealing plate is fixed at the upper end of the surrounding plate, a through hole is formed in the middle of the sealing plate, and the lime water spray heads are respectively fixed at the lower surface of the sealing plate and the top of the desulfurization tower.
Further, a plurality of the fan blades are arranged in a staggered mode along the axial direction of the air pipe.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the flue gas denitration and desulfurization system, the distributor is arranged in the mixer, and ozone is uniformly dispersed into the mixer through the distributor, so that the ozone and the flue gas are fully mixed, and the oxidation efficiency of the flue gas is improved. The distributor includes many tracheas and annular pipe, tracheal both ends are rotated and are connected the annular pipe, tracheal outer wall is fixed with a plurality of flabellums, when the flue gas flows the distributor, the power that the flue gas flows passes through the flabellum and drives the trachea and rotate, tracheal rotation drives the gas pocket rotation on the trachea, make the injection area of ozone and the injection scope of ozone increase, thereby improve the mixing efficiency of ozone and flue gas, in addition, the rotation of flabellum can stir near the flue gas and the ozone of flabellum, make flue gas and ozone mix more fully, improve the oxidation efficiency of flue gas, thereby improve the denitration efficiency and the denitration effect of flue gas. Be equipped with the journey structure that prolongs that is used for prolonging the flue gas stroke in the desulfurizing tower, can pass through the time extension of desulfurizing tower with the flue gas for flue gas and lime wash fully contact, improve the desulfurization efficiency and the desulfurization effect of flue gas.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of a flue gas denitration and desulfurization system of the present invention;
FIG. 2 is a schematic diagram of the distributor of the present invention;
FIG. 3 is a schematic diagram of a mixer of the present invention;
FIG. 4 is a schematic diagram of another mixer of the present invention;
FIG. 5 is a schematic diagram of an extended reach structure of the present invention;
FIG. 6 is a schematic diagram of an alternative arrangement of the extension of the present invention;
FIG. 7 is a schematic top view of the shroud of FIG. 6;
the device comprises a mixer 1, a flue gas inlet 2, a flue gas outlet 3, an ozone generator 4, a distributor 5, a washing tower 6, a gas inlet 7, a gas outlet 8, a clear water spray head 9, a first circulating pump 10, a desulfurizing tower 11, a gas outlet 12, a range extending structure 13, a lime water spray head 14, a second circulating pump 15, a ring pipe 16, a gas pipe 17, a gas hole 18, a fan blade 19, a gas inlet pipe 20, a barrier strip 21, an upper baffle 22, a lower baffle 23, a coaming 24, a sealing plate 25 and a through hole 26.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, 2 and 3, a flue gas denitration and desulfurization system includes an ozone generator 4, a mixer 1, a distributor 5, a washing tower 6 and a desulfurization tower 11, wherein the mixer 1 includes a pipe body, the inner diameter of the pipe body is gradually reduced and then gradually enlarged, a flue gas inlet 2 and a flue gas outlet 3 are respectively arranged at two ends of the mixer 1, the distributor 5 is arranged at the minimum inner diameter of the pipe body, and the distributor 5 is connected with the ozone generator 4 through a pipeline. The lower part of scrubbing tower 6 is equipped with into gas port 7, and the upper portion of scrubbing tower 6 is equipped with gas outlet 8, and gas port 7 passes through pipe connection exhanst gas outlet 3, is equipped with clear water shower nozzle 9 in the scrubbing tower 6, and clear water shower nozzle 9 is connected with first circulating pump 10, and the bottom of scrubbing tower 6 is connected to the mouth that draws water of first circulating pump 10, and gas outlet 8 passes through the lower part of pipe connection desulfurizing tower 11. Be equipped with in the desulfurizing tower 11 and be used for prolonging journey structure 13 and a plurality of lime water shower nozzle 14 of flue gas stroke, lime water shower nozzle 14 is connected with second circulating pump 15, and desulfurizing tower 11's bottom is connected to second circulating pump 15's the mouth that draws water, and desulfurizing tower 11's upper portion is equipped with gas vent 12. The distributor 5 comprises an annular pipe 16 and a plurality of air pipes 17, the outer wall of the annular pipe 16 is fixed on the inner wall of the mixer 1, the air pipes 17 are arranged in an inner ring of the annular pipe 16, the two ends of the air pipes 17 are respectively connected with the annular pipe 16 in a rotating mode and communicated with the annular pipe 16, the annular pipe 16 is connected with an air inlet pipe 20, the air inlet pipe 20 penetrates out of the mixer 1, the air inlet pipe 20 is connected with the ozone generator 4 through a pipeline, the air pipes 17 are provided with a plurality of air holes 18, the outer wall of the air pipes 17 is fixed with a plurality of fan blades 19, and the fan blades 19 are arranged in a staggered mode along the axial direction of the air pipes 17.
Referring to fig. 5, the stroke extending structure 13 includes a plurality of sets of gas passing assemblies sequentially arranged from bottom to top, each gas passing assembly includes an upper baffle 22 and a lower baffle 23, the lower baffle 23 and the upper baffle 22 are both horizontally arranged, the upper baffle 22 is arranged above the lower baffle 23, the upper end of the lower baffle 23 is fixed on the inner wall of the desulfurization tower 11, the lower end of the upper baffle 22 is provided with a leakage hole, the leakage hole can prevent lime water from accumulating on the upper baffle 22, gaps are respectively arranged between the upper end of the upper baffle 22 and the inner wall of the desulfurization tower 11, the lower end of the lower baffle 23 and the inner wall of the desulfurization tower 11, and the plurality of lime water nozzles 14 are respectively fixed on the tops of the upper baffle 22, the lower baffle 23 and the desulfurization tower 11.
The flue gas is followed flue gas entry 2 and is got into blender 1, along with the reduction of body internal diameter, the velocity of flow of flue gas increases, and atmospheric pressure reduces, and when the flue gas passes through distributor 5 of the minimum department of body internal diameter, the velocity of flow of flue gas is the biggest, and atmospheric pressure is the lowest, has increaseed the jet velocity of ozone, increases the jet distance of ozone for the mixing efficiency of ozone and flue gas is higher, mixes more evenly. After the flue gas passes through distributor 5, the internal diameter grow of body, the space grow, flue gas and ozone dispersion are opened, and flue gas and ozone mix more evenly among the dispersion process. After the flue gas enters the desulfurizing tower 11, the gap between the lower baffle 23 of the group of air passing assemblies at the bottom and the desulfurizing tower 11 enters the space between the group of lower baffle 23 and the upper baffle 22 at the bottom, then the gap between the upper baffle 22 and the desulfurizing tower 11 enters the space between the two groups of air passing assemblies at the bottom, then the gap between the lower baffle 23 of the group of air passing assemblies at the second and the desulfurizing tower 11 passes through, and the flue gas continues to move upwards, because the lime water nozzles 14 are respectively fixed on the upper baffle 22 and the lower baffle 23, the flue gas is always in the spraying range of the lime water nozzles 14 in the moving process, and the desulfurizing efficiency and the desulfurizing effect of the flue gas are improved.
Example 2
Referring to fig. 1, 2 and 4, a flue gas denitration and desulfurization system comprises an ozone generator 4, a mixer 1, a distributor 5, a washing tower 6 and a desulfurization tower 11, wherein a flue gas inlet 2 and a flue gas outlet 3 are respectively arranged at two ends of the mixer 1, the distributor 5 is arranged in the mixer 1, the distributor 5 is connected with the ozone generator 4 through a pipeline, the mixer 1 is spiral, a barrier strip 21 is fixedly arranged on the inner wall of the mixer 1, the barrier strip 21 is arranged between the distributor 5 and the flue gas outlet 3, and the height of the barrier strip 21 is 3 mm. The lower part of scrubbing tower 6 is equipped with into gas port 7, and the upper portion of scrubbing tower 6 is equipped with gas outlet 8, and gas port 7 passes through pipe connection exhanst gas outlet 3, is equipped with clear water shower nozzle 9 in the scrubbing tower 6, and clear water shower nozzle 9 is connected with first circulating pump 10, and the bottom of scrubbing tower 6 is connected to the mouth that draws water of first circulating pump 10, and gas outlet 8 passes through the lower part of pipe connection desulfurizing tower 11. Be equipped with in the desulfurizing tower 11 and be used for prolonging journey structure 13 and a plurality of lime water shower nozzle 14 of flue gas stroke, lime water shower nozzle 14 is connected with second circulating pump 15, and desulfurizing tower 11's bottom is connected to second circulating pump 15's the mouth that draws water, and desulfurizing tower 11's upper portion is equipped with gas vent 12. The distributor 5 comprises an annular pipe 16 and a plurality of air pipes 17, the outer wall of the annular pipe 16 is fixed on the inner wall of the mixer 1, the air pipes 17 are arranged in an inner ring of the annular pipe 16, the two ends of the air pipes 17 are respectively connected with the annular pipe 16 in a rotating mode and communicated with the annular pipe 16, the annular pipe 16 is connected with an air inlet pipe 20, the air inlet pipe 20 penetrates out of the mixer 1, the air inlet pipe 20 is connected with the ozone generator 4 through a pipeline, the air pipes 17 are provided with a plurality of air holes 18, the outer wall of the air pipes 17 is fixed with a plurality of fan blades 19, and the fan blades 19 are arranged in a staggered mode along the axial direction of the air pipes 17.
Referring to fig. 6 and 7, the extension structure 13 includes a surrounding plate 24, the surrounding plate 24 is spirally disposed from outside to inside, a lower end of the surrounding plate 24 is fixed to the bottom of the desulfurization tower 11, a sealing plate 25 is fixed to an upper end of the surrounding plate 24, a through hole 26 is formed in a middle portion of the sealing plate 25, the through hole 26 is formed above a middle portion of the surrounding plate 24, and the plurality of lime water nozzles 14 are respectively fixed to a lower surface of the sealing plate 25 and a top of the desulfurization tower 11.
Flue gas enters into blender 1 from flue gas entry 2, during through spiral helicine blender 1, the flue gas advances along with 1 spiral of blender, has the power of a spiral, continue to advance after the ozone that 5 and 5 erupts of distributor through the distributor, the flue gas and the ozone that are close to 5 inner walls of distributor hit and beat and disperse behind blend stop 21, strike flue gas and ozone in the middle of 5 distributor for the mixture of flue gas and ozone is more even, improves the denitration efficiency and the denitration effect of flue gas. After entering into desulfurizing tower 11, the flue gas enters along bounding wall 24 spiral, then upwards discharges through-hole 26 and prolongs journey structure 13 from the centre of bounding wall 24, and in prolonging journey structure 13 structure, the flue gas is in the spray range of lime wash shower nozzle 14 all the time, has improved the desulfurization efficiency and the desulfurization effect of flue gas.
Example 3
Referring to fig. 1, 2 and 4, a flue gas denitration and desulfurization system comprises an ozone generator 4, a mixer 1, a distributor 5, a washing tower 6 and a desulfurization tower 11, wherein a flue gas inlet 2 and a flue gas outlet 3 are respectively arranged at two ends of the mixer 1, the distributor 5 is arranged in the mixer 1, the distributor 5 is connected with the ozone generator 4 through a pipeline, the mixer 1 is spiral, a barrier strip 21 is fixedly arranged on the inner wall of the mixer 1, the barrier strip 21 is arranged between the distributor 5 and the flue gas outlet 3, and the height of the barrier strip 21 is 3 mm. The lower part of scrubbing tower 6 is equipped with into gas port 7, and the upper portion of scrubbing tower 6 is equipped with gas outlet 8, and gas port 7 passes through pipe connection exhanst gas outlet 3, is equipped with clear water shower nozzle 9 in the scrubbing tower 6, and clear water shower nozzle 9 is connected with first circulating pump 10, and the bottom of scrubbing tower 6 is connected to the mouth that draws water of first circulating pump 10, and gas outlet 8 passes through the lower part of pipe connection desulfurizing tower 11. Be equipped with in the desulfurizing tower 11 and be used for prolonging journey structure 13 and a plurality of lime water shower nozzle 14 of flue gas stroke, lime water shower nozzle 14 is connected with second circulating pump 15, and desulfurizing tower 11's bottom is connected to second circulating pump 15's the mouth that draws water, and desulfurizing tower 11's upper portion is equipped with gas vent 12. The distributor 5 comprises an annular pipe 16 and a plurality of air pipes 17, the outer wall of the annular pipe 16 is fixed on the inner wall of the mixer 1, the air pipes 17 are arranged in an inner ring of the annular pipe 16, the two ends of the air pipes 17 are respectively connected with the annular pipe 16 in a rotating mode and communicated with the annular pipe 16, the annular pipe 16 is connected with an air inlet pipe 20, the air inlet pipe 20 penetrates out of the mixer 1, the air inlet pipe 20 is connected with the ozone generator 4 through a pipeline, the air pipes 17 are provided with a plurality of air holes 18, the outer wall of the air pipes 17 is fixed with a plurality of fan blades 19, and the fan blades 19 are arranged in a staggered mode along the axial direction of the air pipes 17.
Referring to fig. 5, the stroke extending structure 13 includes a plurality of sets of gas passing assemblies sequentially arranged from bottom to top, each gas passing assembly includes an upper baffle 22 and a lower baffle 23, the lower baffle 23 and the upper baffle 22 are both horizontally arranged, the upper baffle 22 is arranged above the lower baffle 23, the upper end of the lower baffle 23 is fixed on the inner wall of the desulfurization tower 11, the lower end of the upper baffle 22 is provided with a leakage hole, the leakage hole can prevent lime water from accumulating on the upper baffle 22, gaps are respectively arranged between the upper end of the upper baffle 22 and the inner wall of the desulfurization tower 11, the lower end of the lower baffle 23 and the inner wall of the desulfurization tower 11, and the plurality of lime water nozzles 14 are respectively fixed on the tops of the upper baffle 22, the lower baffle 23 and the desulfurization tower 11.
Flue gas enters into blender 1 from flue gas entry 2, during through spiral helicine blender 1, the flue gas advances along with 1 spiral of blender, has the power of a spiral, continue to advance after the ozone that 5 and 5 erupts of distributor through the distributor, the flue gas and the ozone that are close to 5 inner walls of distributor hit and beat and disperse behind blend stop 21, strike flue gas and ozone in the middle of 5 distributor for the mixture of flue gas and ozone is more even, improves the denitration efficiency and the denitration effect of flue gas. After the flue gas passes through distributor 5, the internal diameter grow of body, the space grow, flue gas and ozone dispersion are opened, and flue gas and ozone mix more evenly among the dispersion process. After the flue gas enters the desulfurizing tower 11, the gap between the lower baffle 23 of the group of air passing assemblies at the bottom and the desulfurizing tower 11 enters the space between the group of lower baffle 23 and the upper baffle 22 at the bottom, then the gap between the upper baffle 22 and the desulfurizing tower 11 enters the space between the two groups of air passing assemblies at the bottom, then the gap between the lower baffle 23 of the group of air passing assemblies at the second and the desulfurizing tower 11 passes through, and the flue gas continues to move upwards, because the lime water nozzles 14 are respectively fixed on the upper baffle 22 and the lower baffle 23, the flue gas is always in the spraying range of the lime water nozzles 14 in the moving process, and the desulfurizing efficiency and the desulfurizing effect of the flue gas are improved.
Example 4
Referring to fig. 1, 2 and 3, a flue gas denitration and desulfurization system includes an ozone generator 4, a mixer 1, a distributor 5, a washing tower 6 and a desulfurization tower 11, wherein the mixer 1 includes a pipe body, the inner diameter of the pipe body is gradually reduced and then gradually enlarged, a flue gas inlet 2 and a flue gas outlet 3 are respectively arranged at two ends of the mixer 1, the distributor 5 is arranged at the minimum inner diameter of the pipe body, and the distributor 5 is connected with the ozone generator 4 through a pipeline. The lower part of scrubbing tower 6 is equipped with into gas port 7, and the upper portion of scrubbing tower 6 is equipped with gas outlet 8, and gas port 7 passes through pipe connection exhanst gas outlet 3, is equipped with clear water shower nozzle 9 in the scrubbing tower 6, and clear water shower nozzle 9 is connected with first circulating pump 10, and the bottom of scrubbing tower 6 is connected to the mouth that draws water of first circulating pump 10, and gas outlet 8 passes through the lower part of pipe connection desulfurizing tower 11. Be equipped with in the desulfurizing tower 11 and be used for prolonging journey structure 13 and a plurality of lime water shower nozzle 14 of flue gas stroke, lime water shower nozzle 14 is connected with second circulating pump 15, and desulfurizing tower 11's bottom is connected to second circulating pump 15's the mouth that draws water, and desulfurizing tower 11's upper portion is equipped with gas vent 12. The distributor 5 comprises an annular pipe 16 and a plurality of air pipes 17, the outer wall of the annular pipe 16 is fixed on the inner wall of the mixer 1, the air pipes 17 are arranged in an inner ring of the annular pipe 16, the two ends of the air pipes 17 are respectively connected with the annular pipe 16 in a rotating mode and communicated with the annular pipe 16, the annular pipe 16 is connected with an air inlet pipe 20, the air inlet pipe 20 penetrates out of the mixer 1, the air inlet pipe 20 is connected with the ozone generator 4 through a pipeline, the air pipes 17 are provided with a plurality of air holes 18, the outer wall of the air pipes 17 is fixed with a plurality of fan blades 19, and the fan blades 19 are arranged in a staggered mode along the axial direction of the air pipes 17.
Referring to fig. 6 and 7, the extension structure 13 includes a surrounding plate 24, the surrounding plate 24 is spirally disposed from outside to inside, a lower end of the surrounding plate 24 is fixed to the bottom of the desulfurization tower 11, a sealing plate 25 is fixed to an upper end of the surrounding plate 24, a through hole 26 is formed in a middle portion of the sealing plate 25, and the plurality of lime water nozzles 14 are respectively fixed to a lower surface of the sealing plate 25 and the top of the desulfurization tower 11.
The flue gas is followed flue gas entry 2 and is got into blender 1, along with the reduction of body internal diameter, the velocity of flow of flue gas increases, and atmospheric pressure reduces, and when the flue gas passes through distributor 5 of the minimum department of body internal diameter, the velocity of flow of flue gas is the biggest, and atmospheric pressure is the lowest, has increaseed the jet velocity of ozone, increases the jet distance of ozone for the mixing efficiency of ozone and flue gas is higher, mixes more evenly. After entering into desulfurizing tower 11, the flue gas enters along bounding wall 24 spiral, then upwards discharges through-hole 26 and prolongs journey structure 13 from the centre of bounding wall 24, and in prolonging journey structure 13 structure, the flue gas is in the spray range of lime wash shower nozzle 14 all the time, has improved the desulfurization efficiency and the desulfurization effect of flue gas.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a flue gas denitration desulfurization system which characterized in that: including ozone generator, blender, distributor, scrubbing tower and desulfurizing tower, the both ends of blender are equipped with flue gas entry and exhanst gas outlet respectively, the distributor is located in the blender, the distributor passes through the pipe connection ozone generator, the lower part of scrubbing tower is equipped with into the gas port, the upper portion of scrubbing tower is equipped with the gas outlet, it passes through the pipe connection to go into the gas port the exhanst gas outlet, be equipped with the clear water shower nozzle in the scrubbing tower, the clear water shower nozzle is connected with first circulating pump, the mouth that draws water of first circulating pump is connected the bottom of scrubbing tower, the gas outlet passes through the pipe connection the lower part of desulfurizing tower, be equipped with extension stroke structure and a plurality of lime water shower nozzle that are used for prolonging the flue gas stroke in the desulfurizing tower, the lime water shower nozzle is connected with the second circulating pump, the mouth that draws water of second circulating pump is connected the bottom of desulfurizing tower, an exhaust port is formed in the upper part of the desulfurizing tower;
the distributor includes many tracheas and ring pipes, the outer wall of ring pipe is fixed in the inner wall of blender, many the trachea is located the inner ring of ring pipe, tracheal both ends are rotated respectively and are connected ring pipe and intercommunication the ring pipe, the ring union coupling has the intake pipe, the intake pipe is worn out outside the blender, the intake pipe passes through the pipe connection ozone generator, the trachea is equipped with a plurality of gas pockets, tracheal outer wall is fixed with a plurality of flabellums.
2. The flue gas denitration and desulfurization system of claim 1, wherein: the mixer comprises a pipe body, the inner diameter of the pipe body is gradually reduced and then gradually enlarged, and the distributor is arranged at the position of the minimum inner diameter of the pipe body.
3. The flue gas denitration and desulfurization system of claim 1, wherein: the blender is the heliciform, and the inner wall of blender is fixed and is equipped with the blend stop, the blend stop is located between distributor and the exhanst gas outlet.
4. The flue gas denitration and desulfurization system of claim 1, wherein: the range extending structure comprises a plurality of groups of gas passing assemblies which are sequentially arranged from bottom to top, each gas passing assembly comprises an upper baffle and a lower baffle, the upper end of each lower baffle is fixed on the inner wall of the desulfurization tower, the lower end of each upper baffle is fixed on the inner wall of the desulfurization tower, gaps are respectively arranged between the upper end of each upper baffle and the inner wall of the desulfurization tower and between the lower end of each lower baffle and the inner wall of the desulfurization tower, and the lime water sprayers are respectively fixed on the tops of the upper baffles, the lower baffles and the desulfurization tower.
5. The flue gas denitration and desulfurization system of claim 1, wherein: the extension structure comprises a surrounding plate, the surrounding plate is spirally arranged from outside to inside, the lower end of the surrounding plate is fixed to the bottom of the desulfurization tower, a sealing plate is fixed to the upper end of the surrounding plate, a through hole is formed in the middle of the sealing plate, and the lime water spray heads are fixed to the lower surface of the sealing plate and the top of the desulfurization tower respectively.
6. The flue gas denitration and desulfurization system of claim 1, wherein: the fan blades are arranged along the axial direction of the air pipe in a staggered mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505652.0A CN113144853A (en) | 2021-05-10 | 2021-05-10 | Flue gas denitration desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110505652.0A CN113144853A (en) | 2021-05-10 | 2021-05-10 | Flue gas denitration desulfurization system |
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| CN113144853A true CN113144853A (en) | 2021-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115178070A (en) * | 2022-07-19 | 2022-10-14 | 江苏寅胜环保能源工程有限公司 | Heat-cycle self-powered desulfurization and denitration system and method |
-
2021
- 2021-05-10 CN CN202110505652.0A patent/CN113144853A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115178070A (en) * | 2022-07-19 | 2022-10-14 | 江苏寅胜环保能源工程有限公司 | Heat-cycle self-powered desulfurization and denitration system and method |
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