CN110665361A - Ultra-low emission equipment of dust removal desulfurization integration - Google Patents
Ultra-low emission equipment of dust removal desulfurization integration Download PDFInfo
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- CN110665361A CN110665361A CN201911045752.9A CN201911045752A CN110665361A CN 110665361 A CN110665361 A CN 110665361A CN 201911045752 A CN201911045752 A CN 201911045752A CN 110665361 A CN110665361 A CN 110665361A
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/10—Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00
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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
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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
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Abstract
A dedusting and desulfurization integrated ultra-low emission device relates to an ultra-low emission device. The invention aims to solve the problems that the existing flue gas exhausted into the atmosphere after desulfurization still has over-high sulfur dioxide content and pollutes the air. According to the invention, an overflow inclined plate (2) is arranged in the bottom end of a tower body (1), the right side of the overflow inclined plate (2) is arranged in an upward inclined manner relative to the bottom end face of the tower body (1), a flue gas inlet pipe (3) is arranged in the tower body (1) and is positioned above the overflow inclined plate (2), and an emulsification perforated tray (4), a plurality of groups of spraying systems (5), a regulator (6), a folded plate type demister (7) and a tube bundle turbulence dust removal demister (8) are sequentially arranged above the flue gas inlet pipe (3) in the tower body (1) from bottom to top. The invention adopts a plurality of technical means to comprehensively use so that the desulfurized flue gas reaches the dust content of less than or equal to 10mgN/m3Sulfur dioxide is less than or equal to 35mgN/m3At the mostFinally realizing ultra-low emission. The invention is used for dedusting and desulfurizing.
Description
Technical Field
The invention relates to desulfurization discharge equipment, in particular to dedusting and desulfurization integrated ultralow discharge equipment.
Background
Desulfurization broadly refers to the process of removing sulfur from fuel prior to combustion and prior to flue gas emission. Is one of the important technical measures for preventing and controlling the air pollution. The prior desulfurization method generally comprises three methods of desulfurization before combustion, desulfurization during combustion and desulfurization after combustion. With the development of industry and the improvement of living standard of people, the desire for energy is increasing, and sulfur dioxide in coal-fired flue gas is a main cause of air pollution. The reduction of sulfur dioxide pollution is a current urgent need for atmospheric environmental treatment. Many flue gas desulfurization processes have been widely used in industry, and have important practical significance for the treatment of tail gas of various boilers and incinerators.
The emission index of the existing denitration equipment can realize that the dust is less than or equal to 30mgN/m3Sulfur dioxide is less than or equal to 200mgN/m3Nitrogen oxide is less than or equal to 200mgN/m3However, the flue gas discharged into the atmosphere after denitration still has the problems of over-high sulfur dioxide content and air pollution.
Disclosure of Invention
The invention aims to solve the problems that the flue gas discharged into the atmosphere after denitration still has over-high sulfur dioxide content and pollutes the air. Further provides a dedusting and desulfurization integrated ultra-low emission device.
The technical scheme of the invention is as follows: the utility model provides a dust removal desulfurization integrated ultralow discharge apparatus includes the tower body, the vertical setting of tower body, it still includes the overflow swash plate, the flue gas air-supply line, the emulsification perforation tower tray, the multiunit spray system, the regulator, folded plate defroster and tube bank torrent dust removal defroster, the overflow swash plate is installed in the bottom of tower body, and the right side of overflow swash plate is arranged for the bottom face tilt up of tower body, the flue gas air-supply line is installed in the tower body and is located the top of overflow swash plate, emulsification perforation tower tray, the multiunit spray system, the regulator, folded plate defroster and tube bank torrent dust removal defroster are installed in proper order in the flue gas air-supply line top in the tower.
Further, the right side of the overflow ramp is inclined upwards by 75 ° relative to the bottom end face of the tower.
Furthermore, the flue gas inlet section of the flue gas air inlet pipe is higher than the flue gas outlet section of the flue gas air inlet pipe in the tower body.
Further, the flue gas outlet section is inclined upwards by 15 ° in the horizontal direction with respect to the flue gas inlet section.
Furthermore, the emulsification perforated tray comprises water collecting steel plates and trays, wherein the water collecting steel plates are transversely and longitudinally installed in the tray body in a staggered mode, the trays are installed on the water collecting steel plates, and a plurality of filtering holes are formed in the trays.
Furthermore, the filtering holes are stepped holes with gradually reduced apertures from bottom to top.
Furthermore, the quantity of multiunit spraying system is three or four or five groups, and every group spraying system all includes trunk line, a plurality of branch pipeline and a plurality of nozzle, and a plurality of branch pipelines are concentric and from interior to exterior and loop through the trunk line on same horizontal plane and connect, and equidistant a plurality of nozzles of installing on every branch pipeline, a plurality of nozzles rotate on the branch pipeline and spray.
Further, the folded plate type demister 7 comprises at least two demisting units, and the at least two demisting units are sequentially installed from bottom to top; every defogging unit includes a defogging water pipe, a plurality of first defogging nozzles, a plurality of gallows and has the filter layer of a plurality of bending plates at least, and the filter layer that has a plurality of bending plates is installed on the tower body, and a plurality of gallows are installed to the lower extreme of the filter layer that has a plurality of bending plates, and the defogging water pipe is through a plurality of gallows fixed mounting, installs a plurality of first defogging nozzles on the defogging water pipe.
Further, tube bank torrent dust removal defroster includes last defogging water pipe, a plurality of second defogging nozzle and honeycomb defogging module down, goes up defogging water pipe, honeycomb defogging module and install in the tower body from top to bottom in proper order with defogging water pipe down, and a plurality of second defogging nozzles are installed respectively on last defogging water pipe and the lower defogging water pipe.
Further, tube bank torrent dust removal defroster still includes a plurality of torrent balls, for the ventilative module that has a plurality of honeycomb holes in the honeycomb defogging module, is equipped with torrent ball stop device on the honeycomb defogging module, installs a plurality of torrent balls in every honeycomb hole.
Compared with the prior art, the invention has the following effects:
1. the lower end of the tower body is provided with the flue gas inlet pipe which is obliquely arranged, so that when the flue gas enters the tower body, the flue gas can form rotary air flow after impacting the inner side wall of the tower body, and then the air flow flows upwards. Not only suppresses the downward flow of the flue gas, but also effectively prevents the corrosion problem of the flue.
2. The invention adopts the emulsification perforated tray, so that the flue gas passes through the water collecting steel plate above the tray, the liquid level of 80mm-100mm is arranged above the tray under the action of the spraying system, and the perforated numerical value is determined by setting technical parameters and simulating working conditions because the tray in the tray is provided with the filtering holes. Finally, the liquid level pressure above the tower tray is kept balanced with the pressure of the flue gas flowing reversely during operation. The flue gas is forced to pass through the liquid level layer above the tower tray to generate a flooding effect, the desulfurization efficiency is increased, and the washed particles reach the pre-dedusting efficiency.
3. The invention adopts the folded plate type demister and the tube bundle turbulent flow dust removal demister to simultaneously carry out desulfurization, the steel ball can collide with the flue gas to block dust and sulfur, the flue gas is blocked, and the flue gas slowly passes through the flue gas, so that the desulfurization effect is improved.
In conclusion, the invention adopts a plurality of technical means to comprehensively use so that the desulfurized flue gas reaches the dust content of less than or equal to 10mgN/m3Sulfur dioxide is less than or equal to 35mgN/m3Nitrogen oxide is less than or equal to 50mgN/m3And finally, ultralow emission is realized.
Drawings
FIG. 1 is a schematic front view of the overall structure of the present invention (arrows in the figure indicate the flow direction of flue gas); FIG. 2 is a top view of FIG. 1; FIG. 3 is a partial cross-sectional view taken along A-A of FIG. 1; FIG. 4 is a partial cross-sectional view taken along line B-B of FIG. 1; FIG. 5 is a partial cross-sectional view taken along line C-C of FIG. 1; FIG. 6 is a top view of FIG. 5; FIG. 7 is a coverage map of a sprinkler system; FIG. 8 is a partial cross-sectional view taken along D-D of FIG. 1; FIG. 9 is a partial cross-sectional view taken along G-G of FIG. 1; FIG. 10 is a partial cross-sectional view taken along E-E of FIG. 1; fig. 11 is a partial cross-sectional view taken along F-F of fig. 1. FIG. 12 is a schematic view of a cellular defogging module; FIG. 13 is a schematic diagram of the overall construction of the tube bundle turbulence dust and mist eliminator 8; FIG. 14 is a partial schematic view of a honeycomb demisting module coupled to a helical low shear static mixer; FIG. 15 is a partial schematic view of a screw-type low shear static mixer; fig. 16 is a top view of fig. 15.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 11, and the dust removal and desulfurization integrated ultra-low emission device of the present embodiment includes a tower body 1, the tower body 1 is vertically disposed, the ultra-low emission device further includes an overflow inclined plate 2, a flue gas inlet pipe 3, an emulsification perforated tray 4, a plurality of groups of spraying systems 5, a regulator 6, a folded plate type demister 7 and a tube bundle turbulence dust removal demister 8, the overflow inclined plate 2 is installed in the bottom end of the tower body 1, the right side of the overflow inclined plate 2 is obliquely arranged upward relative to the bottom end face of the tower body 1, the flue gas inlet pipe 3 is installed in the tower body 1 and located above the overflow inclined plate 2, the emulsification perforated tray 4, the plurality of groups of spraying systems 5, the regulator 6, the folded plate type demister 7 and the tube bundle turbulence dust removal demister 8 are sequentially installed above the.
The regulator 6 of the present embodiment can regulate the wind speed to rise uniformly. The regulator comprehensively regulates the opening degree of each regulating port by arranging the pressure sensor and the flow sensor, so that the uniform distribution and the uniform and stable flow velocity of the flue gas are achieved.
The second embodiment is as follows: referring to fig. 1 and 3, the right side of the swash plate 2 of the present embodiment is inclined upward by 75 ° with respect to the bottom end surface of the tower body 1. By the arrangement, under the assistance of the impact and the inclination angle of the circulating water flow, the tower bottom sediment is cleaned and naturally discharged, and the blockage fault of the sediment at the bottom of the desulfurization tower is avoided. Other components and connections are the same as in the first embodiment.
The third concrete implementation mode: referring to fig. 1 and 4, the flue gas inlet section 3-1 of the flue gas inlet pipe 3 of the present embodiment is higher than the flue gas outlet section 3-2 of the flue gas inlet pipe 3 in the tower body 1. So set up, the flue gas resistance is little. Other compositions and connections are the same as in the first or second embodiments.
The fourth concrete implementation mode: referring to the present embodiment described with reference to fig. 1 and 4, the flue gas outlet section 3-2 of the present embodiment is inclined upward by 15 ° in the horizontal direction with respect to the flue gas inlet section 3-1. So set up, rotatory entering equipment distributes more evenly, prevents the thick liquid refluence. The flue gas inclines downwards and enters the desulfurizing tower in a rotating mode, so that the flue gas at the air inlet uniformly rises on the cross section of the desulfurizing tower, and the flow field of the flue gas is stable. Other compositions and connection relationships are the same as in the first, second or third embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1, 5 and 6, the emulsification perforated tray 4 of the present embodiment includes water-collecting steel plates 4-1 and trays 4-2, the water-collecting steel plates 4-1 are installed in the tower body 1 in a staggered manner, the trays 4-2 are installed on the water-collecting steel plates 4-1, and the trays 4-2 are provided with a plurality of filtering holes 4-2-1. So set up, medicament and gaseous abundant combination, dwell time is long. Other compositions and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1, 5, and 6, and the filtering hole 4-2-1 of the present embodiment is a stepped hole having a gradually decreasing diameter from bottom to top. So set up, can deposit dirt, sulphur, carry out abundant collision and contact with sulphur to receive the deposit layer under the action of gravity to discharge into the tower, along with dregs discharge, clear gas continues to go upward, sprays the washing through the multilayer, passes through high-efficient defroster again, reaches best desulfurization effect. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.
In the embodiment, the desulfurization slurry layer with a certain height is reserved above the tray, so that the flue gas is forced to pass through the desulfurization slurry layer, and the slurry naturally flows downwards. And a strong convection emulsification effect is formed, the comprehensive physical reaction of desulfurization is enhanced, and the desulfurization efficiency is enhanced.
The seventh embodiment: the embodiment is described by combining fig. 1 and fig. 7, the number of the multiple groups of spraying systems 5 of the embodiment is three, four or five, each group of spraying systems 5 comprises a main pipeline, multiple branch pipelines 5-1 and multiple nozzles 5-2, the multiple branch pipelines 5-1 are concentric on the same horizontal plane and sequentially connected with the main pipeline from inside to outside, the multiple nozzles 5-2 are arranged on each branch pipeline 5-1 at equal intervals, the multiple nozzles 5-2 spray in a rotating manner on the branch pipelines 5-1, and the multiple nozzles 5-2 spray in a spraying absorption area in a 300% overlapping covering countercurrent manner. So set up, form by spraying the person in charge, branch pipe and nozzle and spray the layer, spray the layer coverage and reach 300%, the annular is arranged, does not have the cover dead angle, through the washing and absorption desorption sulfur dioxide that the convection current sprayed. The gravity of the slurry absorbed by the particles is increased, and the particles are naturally settled to achieve the effect of removing the particles. So that the absorption area has no dead angle and multiple coverage, and the desulfurization efficiency is improved. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 and 10, and the folded plate type demister 7 of the present embodiment includes at least two demisting units, and the at least two demisting units are sequentially installed from bottom to top; each demisting unit at least comprises a demisting water pipe 7-1, a plurality of first demisting nozzles 7-2, a plurality of hangers 7-3 and a filter layer 7-4 with a plurality of bent plates, the filter layer 7-4 with the plurality of bent plates is installed on the tower body 1, the lower end of the filter layer 7-4 with the plurality of bent plates is provided with the plurality of hangers 7-3, the demisting water pipe 7-1 is fixedly installed through the plurality of hangers 7-3, and the demisting water pipe 7-1 is provided with the plurality of first demisting nozzles 7-2. So set up, the moisture in particulate matter and the flue gas is got rid of to the high efficiency, strengthens desulfurization efficiency. Other constitutions and connection relations are the same as those of any one of the first to seventh embodiments.
The multistage folded plate demister 7-4 of the embodiment achieves the primary demisting and dedusting purposes. The washing layer achieves the purpose of cleaning the demister and prevents the demister from being blocked.
The specific implementation method nine: the embodiment is described with reference to fig. 1 and 9, the tube bundle turbulence dust-removing mist eliminator 8 of the embodiment includes an upper mist-removing water pipe 8-1, a lower mist-removing water pipe 8-2, a plurality of second mist-removing nozzles 8-3 and a honeycomb mist-removing module 8-4, the upper mist-removing water pipe 8-1, the honeycomb mist-removing module 8-4 and the lower mist-removing water pipe 8-2 are sequentially installed in the tower body 1 from top to bottom, and the plurality of second mist-removing nozzles 8-3 are respectively installed on the upper mist-removing water pipe 8-1 and the lower mist-removing water pipe 8-2. So set up, the moisture in particulate matter and the flue gas is got rid of to the high efficiency, strengthens desulfurization efficiency. Other compositions and connection relations are the same as those of any one of the first to eighth embodiments.
The detailed implementation mode is ten: the embodiment is described with reference to fig. 1, 9 and 12, the tube bundle turbulence dust-removing demister 8 of the embodiment further includes a plurality of turbulence balls 8-5, a ventilation module with a plurality of honeycomb holes is arranged in the honeycomb demisting module 8-4, a turbulence ball limiting device 20 is arranged on the honeycomb demisting module 8-4, a start-up cyclone device 21 is arranged at the lower part of the honeycomb demisting module 8-4, a plurality of turbulence balls 8-5 are arranged in each honeycomb hole, and a recovery tank is arranged. So set up, make full use of rising air hydrodynamics and the fine fog drop collision of material adsorb the condensation principle, and retrieve through the accumulator after the rotatory air current direction, the back nature flows into the tower below, desorption fine atomizing water droplet and fine particulate matter. Other components and connection relationships are the same as those in any one of the first to ninth embodiments.
The apparatus has: stable operation, low energy consumption, high efficiency, strong capability of adapting to complex working conditions, and the like. Finally achieving the purpose of ultra-low emission (the dust is less than or equal to 10 mgN/m)3Sulfur dioxide is less than or equal to 35mgN/m3)。
The concrete implementation mode eleven: the embodiment is described with reference to fig. 12 to 16, the tube bundle turbulent flow dust-removing mist eliminator of the embodiment comprises an upper mist-removing water pipe 8-1, a lower mist-removing water pipe 8-2 and a plurality of second mist-removing nozzles 8-3, the upper mist-removing water pipe 8-1 and the lower mist-removing water pipe 8-2 are arranged in parallel up and down and are installed on the wall of the tower body 1, the upper mist-removing water pipe 8-1 is provided with the plurality of second mist-removing nozzles 8-3 with downward openings, and the lower mist-removing water pipe 8-2 is provided with the plurality of second mist-removing nozzles 8-3 with upward openings; it also comprises a honeycomb demisting module 8-4, a plurality of turbulent balls 8-5 and a plurality of screw type low shear static mixers 8-6, the honeycomb demisting module 8-4 is arranged on the wall of the tower body 1 between the upper demisting water pipe 8-1 and the lower demisting water pipe 8-2, the honeycomb demisting module 8-4 is a ventilating module with a plurality of honeycomb holes, the upper part of the honeycomb demisting module 8-4 is provided with a plurality of grooves 8-7, each groove 8-7 is internally provided with a plurality of turbulent balls 8-5, and a plurality of turbulent flow balls 8-5 are limited by the upper end baffle plate of the honeycomb demisting module 8-4 and are not washed out, a spiral low-shear static mixer 8-6 is arranged on each groove 8-7, and the spiral low-shear static mixers 8-6 are spiral low-shear static mixers arranged alternately in the rotating direction.
The cellular defogging module 8-4 of the present embodiment is a conventional one, and is not described herein again.
The specific implementation mode twelve: the present embodiment is described with reference to fig. 12 to 16, the spiral low shear static mixer 8-6 of the present embodiment includes two sets of mixers, the two sets of mixers are arranged in parallel, each set of mixer includes a pipe shell 8-6-1 and a plurality of spiral mixing units 8-6-2, the plurality of spiral mixing units 8-6-2 are inserted into the pipe shell 8-6-1, the central line of each spiral mixing unit 8-6-2 along the length direction is parallel to the central line of the pipe shell 8-6-1 along the length direction, and each spiral mixing unit 8-6-2 is formed by connecting a plurality of sections of spiral rods 8-6-4 with opposite rotation directions end to end in sequence. By the arrangement, the rotation directions of the adjacent spiral mixing units 8-6-2 are staggered, so that the liquid flowing along the spiral mixing units is effectively improved, and the uniform mixing between the smoke and the dedusting and demisting agent is realized by the principles of radial rotation, convection and diffusion. Compared with the arrangement with the same rotating direction between the adjacent spiral mixing units 8-6-2, the effect is improved by 2 times. Other compositions and connection relationships are the same as in embodiments one to eleven.
The specific implementation mode is thirteen: the mixer of the present embodiment is described with reference to fig. 12 to 16, and further includes a tripod a-1, wherein the upper and lower ends of the screw rod 8-6-4 are respectively provided with a rotating shaft a-2, the tripod a-1 is installed at the upper and lower ends of the pipe shell 8-6-1, and the rotating shaft a-2 is rotatably installed on the tripod a-1. Due to the arrangement, the screw rod 8-6-4 can rotate quickly and flexibly under the action of smoke. Other compositions and connection relations are the same as those of the first to twelfth embodiments.
The specific implementation mode is fourteen: the present embodiment is described with reference to fig. 12 to 16, and the number of the plurality of spiral mixing units 8-6-2 of the present embodiment is seven, six spiral mixing units 8-6-2 are arranged in an annular array to constitute a spiral ring, and the remaining one spiral mixing unit 8-6-2 is vertically installed at a central position within the spiral ring. So set up, can carry out abundant cutting and dispersion to flue gas fluid beam, be favorable to promoting final homogeneous mixing. Other compositions and connection relations are the same as those of the first to thirteenth embodiments.
The concrete implementation mode is fifteen: referring to fig. 12 to 16, the present embodiment will be described, wherein each spiral mixing unit 8-6-2 of the present embodiment is composed of four spiral rods 8-6-4 with opposite rotation directions connected end to end. By the arrangement, the moving direction of the flue gas fluid beam is forced to be changed continuously, so that continuous dispersion and remixing between two-phase fluids are increased. Other compositions and connection relationships are the same as in the first to fourteenth embodiments.
The specific implementation mode is sixteen: referring to fig. 15, the present embodiment is described, in which four screw rods 8-6-4 having opposite directions of rotation are integrally formed. So set up, increased the dwell time of flue gas, guaranteed desulfurization effect. Other compositions and connection relationships are the same as in embodiments one to fifteen.
Seventeenth embodiment: the mixer of the present embodiment is described with reference to fig. 2 to 4, and further includes two flanges 8-6-3, and the two flanges 8-6-3 are respectively fixedly installed at both ends of the tube shell 8-6-1 and are integrally formed with the tube shell 8-6-1. So set up, it is convenient to connect, easy to overhaul and maintenance. Other compositions and connections are the same as in embodiments one through sixteen.
The specific implementation mode is eighteen: referring to fig. 12 to 16, the present embodiment is described, each spiral mixing unit 8-6-2 of the present embodiment is formed by connecting four spiral rods 8-6-4 with opposite rotation directions end to end, and the rotation directions of the four spiral rods 8-6-4 with opposite rotation directions are left-handed, right-handed, left-handed and right-handed in sequence from top to bottom. So set up for revolve to opposite two strands or stranded gas-liquid mixture collision each other and diffusion, be favorable to realizing the homogeneous mixing of flue gas and dust removal fog remover. Other compositions and connection relations are the same as those of any one of the first to seventeenth embodiments.
The detailed embodiment is nineteen: referring to fig. 12 to 16, the present embodiment will be described, in which the spiral directions of two adjacent spiral mixing units 8-6-2 are opposite from top to bottom. So set up for revolve to opposite two strands or stranded gas-liquid mixture collision each other and diffusion, be favorable to realizing the homogeneous mixing of flue gas and dust removal fog remover. Other components and connection relationships are the same as those in any one of the first to eighteen embodiments.
The desulfurization process of the tube bundle turbulence dust-removing demister 8 of the present embodiment is based on the folded plate type demister 7. After the flue gas is dedusted and demisted by the turbulence balls, the flue gas containing partial sulfur dioxide continuously rises to pass through the spiral low-shear static mixer, and meanwhile, a demisting liquid medium is sprayed downwards above the spiral low-shear static mixer through the second demisting nozzle. The spiral mixer is spiral, so that the flue gas is forced to rotate around the center of the spiral mixer, radial flow from the axis to the inner wall of the pipe shell is generated, and the radial component distribution and the uniform temperature and viscosity of the radial demisting liquid medium are facilitated by the rotary flow; because the liquid flowing along two adjacent mixing units has opposite rotation directions, two or more mixed gases and demisting liquid media with opposite rotation directions collide and diffuse with each other; meanwhile, the rotating direction of each mixing unit is changed in a left-right rotating mode, so that the contact and collision between the flue gas and the demisting medium are more sufficient, and the desulfurization effect is better.
Claims (10)
1. The utility model provides a super low emission equipment of dust removal desulfurization integration, it includes tower body (1), the vertical setting of tower body (1), its characterized in that: it also comprises an overflow inclined plate (2), a flue gas inlet pipe (3), an emulsification perforated tray (4), a plurality of groups of spraying systems (5), a regulator (6), a folded plate type demister (7) and a tube bundle turbulence dust removal demister (8),
the overflow inclined plate (2) is installed in the bottom of the tower body (1), the right side of the overflow inclined plate (2) is arranged in an upward inclined mode relative to the bottom face of the tower body (1), the flue gas air inlet pipe (3) is installed in the tower body (1) and located above the overflow inclined plate (2), and the emulsification perforated tray (4), the multiple groups of spraying systems (5), the regulator (6), the folded plate type demister (7) and the tube bundle turbulence dust removal demister (8) are sequentially installed above the flue gas air inlet pipe (3) in the tower body (1) from bottom to top.
2. The integrated dedusting and desulfurizing ultralow emission device of claim 1, wherein: the right side of the overflow inclined plate (2) is inclined upwards by 75 degrees relative to the bottom end surface of the tower body (1).
3. The integrated dedusting and desulfurizing ultralow emission device of claim 2, wherein: the flue gas inlet section (3-1) of the flue gas inlet pipe (3) is higher than the flue gas outlet section (3-2) of the flue gas inlet pipe (3) in the tower body (1).
4. The integrated dedusting and desulfurizing ultralow emission device of claim 3, wherein: the smoke outlet section (3-2) is inclined upwards by 15 degrees relative to the smoke inlet section (3-1) in the horizontal direction.
5. The integrated dedusting and desulfurizing ultralow emission device of claim 4, wherein: the emulsification perforated tray (4) comprises water collecting steel plates (4-1) and trays (4-2), the water collecting steel plates (4-1) are transversely and longitudinally installed in the tower body (1) in a staggered mode, the trays (4-2) are installed on the water collecting steel plates (4-1), and a plurality of filtering holes (4-2-1) are formed in the trays (4-2).
6. The integrated dedusting and desulfurizing ultralow emission device of claim 5, wherein: the filtering holes (4-2-1) are stepped holes with gradually reduced apertures from bottom to top.
7. The integrated dedusting and desulfurizing ultralow emission device of claim 5, wherein: the number of the multiple groups of spraying systems (5) is three groups or four groups or five groups, each group of spraying systems (5) comprises a main pipeline, multiple branch pipelines (5-1) and multiple nozzles (5-2), the multiple branch pipelines (5-1) are horizontally arranged on the same horizontal plane and sequentially connected with the branch pipelines at the connecting nozzles (5-2) through the main pipeline from inside to outside, the multiple nozzles (5-2) are installed on the pipelines (5-1) at equal intervals, and the multiple nozzles (5-2) are in a spraying absorption area and are covered with 300% of overlapping countercurrent spraying.
8. The integrated dedusting and desulfurizing ultralow emission device of claim 5, wherein: the folded plate type demister (7) comprises at least two demisting units, and the at least two demisting units are sequentially installed from bottom to top;
each demisting unit at least comprises a demisting water pipe (7-1), a plurality of first demisting nozzles (7-2), a plurality of hanging brackets (7-3) and a filtering layer (7-4) with a plurality of bent plates, the filtering layer (7-4) with the plurality of bent plates is installed on the tower body (1), the plurality of hanging brackets (7-3) are installed at the lower end of the filtering layer (7-4) with the plurality of bent plates, the demisting water pipe (7-1) is fixedly installed through the plurality of hanging brackets (7-3), and the plurality of demisting nozzles (7-2) are installed on the demisting water pipe (7-1).
9. The integrated dust removal and desulfurization ultra-low emission device according to claim 1 or 8, wherein: tube bank torrent dust removal defroster (8) are including last defogging water pipe (8-1), defogging water pipe (8-2) down, a plurality of second defogging nozzle (8-3) and honeycomb defogging module (8-4), go up defogging water pipe (8-1), honeycomb defogging module (8-4) and install in tower body (1) from top to bottom in proper order down, a plurality of second defogging nozzle (8-3) are installed respectively on last defogging water pipe (8-1) and lower defogging water pipe (8-2).
10. The integrated dedusting and desulfurizing ultra-low emission device of claim 9, wherein: tube bank torrent dust removal defroster (8) still include a plurality of torrent balls (8-5), for the ventilative module that has a plurality of honeycomb holes in honeycomb defogging module (8-4), be equipped with torrent ball stop device (20) on honeycomb defogging module (8-4), install a plurality of torrent balls (8-5) in every honeycomb hole.
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