CN204637973U - A kind of flue gas desulphurization system - Google Patents
A kind of flue gas desulphurization system Download PDFInfo
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- CN204637973U CN204637973U CN201520305391.8U CN201520305391U CN204637973U CN 204637973 U CN204637973 U CN 204637973U CN 201520305391 U CN201520305391 U CN 201520305391U CN 204637973 U CN204637973 U CN 204637973U
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Abstract
A kind of flue gas desulphurization system, comprise raw material system, absorption system, oxidizing and crystallizing system and dewatering system, it is characterized in that: described oxidizing and crystallizing system comprises crystallizing pond and is positioned at the peripheral hardware oxidation pond above crystallizing pond, the top of described peripheral hardware oxidation pond is provided with charging aperture, and bottom is provided with the first discharging opening and the second discharging opening; Described absorption system comprises absorption tower, and the slurries district on absorption tower is provided with circulation discharging opening and the first recycle feed mouth, the second recycle feed mouth; Described absorption tower is connected with the charging aperture of peripheral hardware oxidation pond by circulation discharging opening, is connected with the first discharging opening of peripheral hardware oxidation pond by the first recycle feed mouth; Described crystallizing pond is connected with dewatering system by the magma outlet of bottom, and crystallizing pond charging aperture is connected with the second discharging opening of peripheral hardware oxidation pond, and the top of crystallizing pond is provided with the thin brilliant outlet be connected with absorption tower second recycle feed mouth.The utility model can effectively improve system oxidation rate and desulfuration efficiency, and the by-produced gypsum quality of output is high.
Description
Technical field
The utility model belongs to technical field of atmospheric pollution control, is specially with a kind of flue gas desulphurization system.
Background technology
Limestone/lime-gypsum method is the sulfur removal technology of extensive use the most at present, relates to the absorption of sulfur dioxide, the dissolving of calcium carbonate, multiple chemical reaction such as oxidation, gypsum crystallization of inferior sulfate radical in sweetening process.In traditional design, above-mentioned reaction all completes in desulfuration absorbing tower, absorbs SO by reverse spray desulfurizer slurry
2generate calcium sulfite, and directly blast oxidation air to slurry pool calcium sulfite oxidation is become gypsum, gypsum enters follow-up dehydration equipment after crystallization.Easily there is equipment scaling blocking in traditional limestone/lime-gypsum method sulfur removal technology, huge, the desulfuration efficiency of slurry pool is difficult to the problem that meets the demands, analyzes its reason, is mostly that gas liquid reaction is insufficient, the oxidizing and crystallizing time is long etc. to cause.
Utility model content
Technical purpose of the present utility model is to provide a kind of flue gas desulphurization system that can improve prior art deficiency, and technical scheme disclosed in the utility model is:
A kind of flue gas desulphurization system, comprises raw material system, absorption system, oxidizing and crystallizing system and dewatering system, it is characterized in that:
Described oxidizing and crystallizing system comprises crystallizing pond and is positioned at the peripheral hardware oxidation pond above crystallizing pond, and the top of described peripheral hardware oxidation pond is provided with charging aperture, and bottom is provided with the first discharging opening and the second discharging opening;
Described absorption system comprises absorption tower, and the slurries district on absorption tower is provided with circulation discharging opening and the first recycle feed mouth, the second recycle feed mouth; Described absorption tower is connected with the charging aperture of peripheral hardware oxidation pond by circulation discharging opening, is connected with the first discharging opening of peripheral hardware oxidation pond by the first recycle feed mouth;
Described crystallizing pond is connected with dewatering system by the magma outlet of bottom, and crystallizing pond charging aperture is connected with the second discharging opening of peripheral hardware oxidation pond, and the top of crystallizing pond is provided with the thin brilliant outlet be connected with absorption tower second recycle feed mouth.
On the basis of such scheme, the technical scheme improved further also comprises:
Peripheral hardware oxidation pond is provided with columniform urceolus and inner core, the reaction chamber of looping between described urceolus and inner core, and described inner core is upper and lower opening, and runs through the cylindrical shell of whole peripheral hardware oxidation pond; The guide shell of upper and lower opening is provided with in described crystallizing pond, on the upper and lower edge of described guide shell and crystallizing pond along and base plate between all leave certain distance, ring-shaped chamber between guide shell barrel and crystallizing pond pool wall is the primary crystallization district forming gypsum crystal, and the area of passage in described primary crystallization district is greater than the area of passage of guide shell; Described oxidizing and crystallizing system comprises agitator, and the motor of described agitator is arranged in the cylinder chamber of peripheral hardware oxidation pond inner core, and the blade of agitator is suspended in crystallizing pond guide shell by axostylus axostyle, is advanced downwards by the liquid entering guide shell.
Described crystallizing pond is provided with columniform pond body, the base plate of back taper or arcs of recesses is provided with bottom its pond body, the internal diameter of crystallizing pond pond body is 2 ~ 4 with the internal diameter ratio of guide shell, the Sidewall Height of crystallizing pond pond body and the aspect ratio of guide shell are 1.5 ~ 3, and the Sidewall Height of crystallizing pond pond body and the ratio of height to diameter of its internal diameter are 1 ~ 3.
Anti-deposition butterfly base plate is provided with bottom described peripheral hardware oxidation pond annular compartment, described anti-deposition butterfly base plate is surrounded by multiple fan ring element and is spliced to form, described fan ring element is obliquely installed, its side, arc inner edge is elevated, its arcing outer edges side is depressed, one end of its arcing outer edges is higher than the other end, make adjacent fan ring element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition butterfly base plate, described leakage fluid dram is arranged on each trough low spot place of anti-deposition butterfly plate or the urceolus of corresponding described trough low spot.
Described absorption tower is provided with slurries district, gas approach, desulfurization section, demister and exhanst gas outlet from bottom to top.Described desulfurization section comprises baffling high gas velocity desulfurization section, and be provided with hydraulic barrier in described baffling high gas velocity desulfurization section, described hydraulic barrier is spliced to form by multi-disc A template and Type B plate:
Described A template is vertical baffle, some A templates are that center divergence expression is arranged in tower body, be separated out several fan-shaped reaction zones, baffling high gas velocity desulfurization zone is divided into some levels, the tower wall of each reaction zone is all provided with atomizer, in tower, spray desulfurization slurry, wherein the below of at least one reaction zone is provided with air inlet, and the top of at least one reaction zone is provided with gas outlet; Described Type B plate is the fanning strip or butterfly plate that are obliquely installed, is arranged on top or the bottom of reaction zone at different levels, forms top board or the base plate of reaction zone at different levels, and one end that the Type B plate forming each top board is positioned at tower heart place is all downward-sloping, surrounds and is spliced to form funnel-form; Lowest part bottom the reaction zone arranging base plate is communicated with slurries district by liquid return tube; Certain distance is left between described A template and the Type B plate of top or bottom, form the gas passage excessively between adjacent reaction district, described gas passage of crossing is arranged between each adjacent reaction zone alternatively up and down, forms the shaped form gas flow of bending in baffling high gas velocity desulfurization section.
Described desulfurization section is provided with entrance point low gas velocity desulfurization section and/or port of export low gas velocity desulfurization section, and described entrance point low gas velocity desulfurization section is positioned at below baffling high gas velocity desulfurization section, more than slurry pool, is provided with side direction or the reverse atomizer spraying slurries to flue gas; Described port of export low gas velocity desulfurization section is positioned at more than baffling high gas velocity desulfurization section, below demister, is provided with side direction or the reverse atomizer spraying slurries to flue gas.
The bottom on absorption tower is provided with anti-deposition butterfly base plate, described anti-deposition butterfly base plate is surrounded by multiple sector element be obliquely installed and is spliced to form, its circle centre position is higher than its arcing outer edges, one end of its arcing outer edges is higher than the other end, make adjacent sector element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition butterfly base plate, evacuated tube at the bottom of tower is arranged on the trough low spot of anti-deposition butterfly plate or the tower wall of corresponding described trough low spot.
The pipeline connected between absorption tower circulation discharging opening and peripheral hardware oxidation pond charging aperture is provided with check-valves, and described check valve configuration is on vertical pipeline section; The valve plate that elastomeric material is made is provided with in the valve body of described check-valves, described valve body is consisted of ring flange docking upper valve body and lower valve body, on the mouth of pipe terrace that described valve plate cover is formed at upper and lower valve body joint, outer rim lower surface and the described terrace of valve plate fit, and seal the mouth of pipe of lower valve body; Be provided with the supporting member of gear below dividing plate in the mouth of pipe of described lower valve body, the middle part of valve plate is fixed on described supporting member at (comprising center line, center); Be provided with in described valve plate many with the reinforcement of described supporting member direction interlaced arrangement.
Conveniently valve plate is fixing, and described upper valve body is provided with a dividing plate in the middle part of its mouth of pipe, and after upper and lower valve body docking, valve plate is pressed abd fixed on described supporting member.
The pipeline connecting the charging aperture of absorption tower circulation discharging opening and peripheral hardware oxidation pond is provided with the ballast pump of regulating flow quantity.
Described absorption tower, peripheral hardware oxidation pond are cylindrical; The first recycle feed mouth on described absorption tower or the charging aperture of oxidation pond comprise multiple injector interface pipe be tangentially arranged on absorbing tower wall or oxidation pond pool wall, and described injector interface pipe is connected with injector.As preferably, the angle of the axis of described injector interface pipe and absorption tower or oxidation pond circumference tangent line is set to 20 ° ~ 70 °, be set to 60 ° ~ 120 ° with the angle of vertical direction, described circumferential tangent line is the tangent line of injector interface pipe axis and absorbing tower wall outer surface or oxidation pond pool wall outer surface place periphery intersection point.
The beneficial effects of the utility model:
During utility model works, sulfur-containing smoke gas enters absorption tower contacts to remove flue gas sulphur with reacting slurry, reacted slurries are pooled to the slurries district on absorption tower, the utility model adds tower external oxidation pond, and make absorption tower, between peripheral hardware oxidation pond and crystallizing pond slurries formative dynamics circulation, the oxidizing process of calcium sulfite also can be occurred outward at tower, overcome that absorption tower in prior art is bulky, not easy care and the low drawback of desulfuration efficiency.Peripheral hardware oxidation pond is placed on the top of crystallizing pond, saves space, utilizing the discrepancy in elevation of oxidation pond and absorption tower, crystallizing pond slurries liquid level simultaneously, oxidation pond can directly being refluxed to absorption tower, to crystallizing pond, without the need to establishing delivery pump again, to reduce energy consumption.The utility model can effectively improve system oxidation rate and desulfuration efficiency, and the by-produced gypsum quality of output is high.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of crystallizing pond;
Fig. 3 is the structural representation of peripheral hardware oxidation pond;
Fig. 4 is the structural representation on absorption tower;
Fig. 5 is the partial structurtes schematic diagram on absorption tower;
Fig. 6 is the structural representation of absorption tower baffling high gas velocity desulfurization section;
Fig. 7 is the cross-sectional view of check-valves;
Fig. 8 is the cross-sectional view with Fig. 7 vertical direction;
Fig. 9 is the structural representation of check-valves valve plate.
Detailed description of the invention
In order to illustrate the technical solution of the utility model and technical purpose, below in conjunction with drawings and the specific embodiments, the utility model is described further.
A kind of flue gas desulphurization system as shown in Figure 1, comprises following part:
(1) raw material system 1;
Described raw material system 1 comprises desulfurizing agent powder storehouse 1-1, screw(-type) feeder 1-2, slurrying case 1-3, agitator 1-4, slurry supply pump 1-5 etc., the present embodiment desulfurizing agent adopts particle diameter at 200 ~ 300 orders, the agstone that purity is greater than 90%, directly beat to powder storehouse 1-1 by pump truck, be transported in slurrying case 1-3 after batcher 1-2 weighs, desulfurization slurry is formed after mixing with hydrocyclone 4-1 overflowing liquid or fresh water (FW), slurry solid content is 10% ~ 15%, the porch of desulfuration recycle pump 2-4 is transported to by slurry supply pump 1-5, the atomizer 2-5 of absorption tower 2-1 is entered after mixing with the slurries in 2-1 slurries district, absorption tower, with smoke reaction.Because agstone dissolubility is poor, in slurrying case 1-3, be provided with agitator 1-4, prevent raw material from depositing in slurrying case.
(2) absorption system 2;
Described absorption system 2 comprises absorption tower 2-1 and corresponding input, output pipe facility, vertical type cylinder shape absorption tower 2-1 as shown in Fig. 1, Fig. 4, Fig. 5, Fig. 6, its tower body is provided with slurries district 2-1-1, gas approach 2-1-2, desulfurization section, demister 2-1-10 and exhanst gas outlet 2-7 from bottom to top.
The tower wall of slurries district, absorption tower 2-1-1 is provided with circulation discharging opening 2-1-12 and the first recycle feed mouth 2-1-11, the second recycle feed mouth (not shown).Be provided with agitating device 2-2 in slurries district 2-1-1, prevent the deposition containing solid desulfurization slurry and blocking.Anti-deposition base plate 2-1-13 is provided with bottom slurries district 2-1-1, described anti-deposition base plate 2-1-13 preferably adopts butterfly plate, described butterfly plate is surrounded by multiple sector element be obliquely installed and is spliced to form, its circle centre position is higher than its arcing outer edges, one end of its arcing outer edges is higher than the other end, make adjacent sector element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition base plate, at the bottom of tower, evacuated tube 2-1-14 correspondence is arranged on the trough low spot of anti-deposition butterfly plate or the tower wall of corresponding described trough low spot, be convenient to the emptying of slurries, avoid deposition.
Described desulfurization section comprises entrance point low gas velocity desulfurization section, baffling high gas velocity desulfurization section and port of export low gas velocity desulfurization section.Described entrance point low gas velocity desulfurization section is positioned at below baffling high gas velocity desulfurization section, slurries district more than 2-1-1, in tower wall circumference or tower, cross section is provided with some nozzles, side direction or spray desulfurization slurry to the flue gas that enters from gas approach 2-1-2 in tower inversely.Described port of export low gas velocity desulfurization section is positioned at baffling high gas velocity desulfurization section more than top board 2-1-9, demister below 2-1-10, in tower wall circumference or tower, cross section is provided with some nozzles, side direction or spray desulfurization slurry to from baffling high gas velocity desulfurization section flue gas out inversely.The configuration of described entrance point low gas velocity desulfurization section, port of export low gas velocity desulfurization section alternative.
Be provided with hydraulic barrier in described baffling high gas velocity desulfurization section and be distributed on the multiple nozzle interfaces on tower wall, described hydraulic barrier is spliced to form by multi-disc A template and Type B plate:
Described A template is vertical baffle 2-1-7, and three pieces of A templates are that center divergence expression is arranged in tower body, are separated out three fan-shaped reaction zones, baffling high gas velocity desulfurization section are divided into three grades, as shown in Figure 6;
Described Type B plate is the anti-deposition base plate or the top board that are arranged on each fan-shaped reaction zone, the baffling high gas velocity desulfurization section first order, the fan-shaped reaction zone top of the second level is respectively provided with a Type B plate top board 2-1-9, the second level, a Type B plate base plate 2-1-5 is respectively provided with bottom the fan-shaped reaction zone of the third level, first, A template top between secondary and between Type B plate top board 2-1-9, second, A template bottom between three grades and the passage all having appropriate size between Type B plate base plate 2-1-5, formed and be communicated with the first order, the crossing gas passage 2-1-8 and be communicated with the second level of the second level, the 2-1-6 of gas passage excessively of the third level, the size of passage is depending on the flow velocity of flue gas.Flue gas keeps off by Type B plate resistance after entering the reaction zone of the baffling high gas velocity desulfurization section first order from below, enters next stage and flows downward, successively by the second level, the third level, the tower wall of each reaction zone is evenly equipped with multiple high-efficiency atomizing nozzle after 180 ° of turnovers.
The first order reaction zone that flue gas never arranges base plate enters, never the 3rd pole reaction zone arranging top board flows out, by the impact of channel size and change in shape, the slurry reaction that flue gas can spray through reaction zone at different levels and atomizer with high flow velocities in baffling high gas velocity desulfurization section, and constantly significantly alter course at reaction interval at different levels, lose the droplet of absorbability under effect of inertia with smoke reaction, effectively trapped by hydraulic barrier, and capture rate is high.The droplet major part that flue gas up afterwards carries is removed by demister 2-6, and the flue gas of crystallization is discharged from outlet 2-7.
Described " high gas velocity ", " low gas velocity " refer to the gas speed contrast that different desulfurization section produces due to structure change, are not the restriction to flow parameters.
Described Type B plate adopts fanning strip or butterfly plate, can adopt any one in following two schemes:
Scheme one: the Type B plate as reaction zone base plate adopts fanning strip, as shown in Figure 5, the one end being positioned at tower heart place is downward-sloping, each base plate surrounds and is spliced to form and incomplete funnel-form, funnelform splicing base plate center is communicated with slurry pool by return duct 2-1-4, is back in slurries district 2-1-1 and continues circulation after being collected by the drop of trapping;
Scheme two: the Type B plate as each reaction zone base plate adopts butterfly plate, as shown in Figure 4, be spliced to form the splicing construction of " V " shape in side edge by two sector elements, the outer end of docking side is inner lower than it, described return duct 2-1-4 is arranged on outside tower body, return duct 2-1-4 entrance is arranged on the tower wall of corresponding described butterfly plate lowest part (i.e. the outer end of above-mentioned docking side), and return duct outlet is communicated with slurries district 2-1-1.
And preferably adopt the mode as described in scheme one as the Type B plate of top board, but without the need to arranging return duct, dropping on the drop above top board and falling in reaction zone by the gas outlet of third level reaction zone, being back in slurries district.
The first recycle feed mouth of described absorption tower 2-1 comprises multiple injector interface pipe being tangentially arranged on 2-1 cylindrical tower wall middle and upper part, absorption tower, and described injector interface pipe is connected with injector 3-10.
(3) oxidizing and crystallizing system 3;
Described oxidizing and crystallizing system 3 comprises crystallizing pond 3-2 and is positioned at the peripheral hardware oxidation pond 3-1 above crystallizing pond 3-2.
Described peripheral hardware oxidation pond as shown in Figure 3, is provided with columniform urceolus 3-1-6 and inner core 3-1-5, the reaction chamber of looping between described urceolus 3-1-6 and inner core 3-1-5, and described inner core 3-1-5 is upper and lower opening, and runs through the cylindrical shell of whole peripheral hardware oxidation pond 3-1.
Annular reaction cavity bottom is provided with anti-deposition butterfly base plate 3-1-3, described anti-deposition butterfly base plate 3-1-3 is surrounded by multiple fan ring element and is spliced to form, described fan ring element is obliquely installed, the side, arc inner edge that it connects with inner core 3-1-5 is elevated, the arcing outer edges side connected with urceolus 3-1-6 is depressed, and one end of arcing outer edges is higher than the other end, make adjacent fan ring element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition butterfly base plate 3-1-3.
The top of described urceolus 3-1-6 is provided with charging aperture, and bottom is provided with the first discharging opening 3-1-7 and the second discharging opening 3-1-4.Described second discharging opening 3-1-4 is arranged on each trough low spot place of anti-deposition butterfly plate 3-1-3 or the outer tube wall of corresponding described trough low spot.The height of described first discharging opening 3-1-7 is between charging aperture 3-1-2 and the second discharging opening 3-1-4.
Oxidation pond charging aperture 3-1-2 comprises multiple injector interface pipe be tangentially arranged on oxidation pond outer tube wall, and this injector interface pipe is connected with injector 3-4.The axis of described injector interface pipe and the angle α of oxidation pond 3-1 circumference (transverse direction) tangent line are set to 20 ° ~ 70 °, preferably be set to 45 °, 60 ° ~ 120 ° are set to the angle β of vertical direction, preferably be set to 75 °, described circumferential tangent line is the tangent line of injector interface pipe axis and oxidation pond urceolus 3-1-6 outer surface place periphery intersection point.Injector interface Guan Yike on described absorption tower 2-1 adopts same angle to arrange, and reaches good cyclone mixing effect while carrying out jet paraffin oxidation.
Desulfurization slurry calcium sulfite after peroxidating becomes calcium sulfate, is unfavorable for dehydration, therefore arranges crystallizing pond 3-2 because crystal particle diameter is very little.As shown in Figure 2, the guide shell 3-11 of upper and lower opening is provided with in described crystallizing pond 3-2, on the upper and lower edge of described guide shell 3-11 and crystallizing pond along and base plate between all leave certain distance, ring-shaped chamber between guide shell barrel and crystallizing pond pool wall is the primary crystallization district forming gypsum crystal, and the area of passage in described primary crystallization district is greater than the area of passage of guide shell.Also be provided with agitator 3-3 in guide shell 3-11, the motor of described agitator 3-3 is arranged in the cylinder chamber of peripheral hardware oxidation pond 3-1 inner core, and the blade of agitator is suspended in crystallizing pond guide shell 3-11 by axostylus axostyle, is advanced downwards by the liquid entering guide shell 3-11.
The pond body of described crystallizing pond 3-2 is cylindrical, is provided with the base plate of back taper or arcs of recesses bottom its pond body.As preferably, the internal diameter of crystallizing pond pond body 3-2 and the internal diameter ratio of guide shell 3-11 are set to 2 ~ 4, the Sidewall Height (not comprising bottom plate heights) of crystallizing pond pond body and the aspect ratio of guide shell are set to 1.5 ~ 3, and the Sidewall Height of crystallizing pond pond body and the ratio of height to diameter of its pond body internal diameter are set to 1 ~ 3.Can select to arrange hydraulic barrier 3-2-4 between the lower edge of described guide shell 3-11 and crystallizing pond 3-2 base plate, described hydraulic barrier 3-2-4 is taper or convex arc type, avoids gypsum crystal to deposit on hydraulic barrier.
The lowest part of described crystallizing pond 3-2 base plate is provided with magma outlet 3-2-5, crystallizing pond 3-2 top is provided with charging aperture 3-2-2, thin brilliant outlet 3-2-1 and overfall 3-2-3, described charging aperture 3-2-2 is directly connected in the cylinder chamber of guide shell 3-11 by pipeline section, make the slurries entering crystallizing pond from the external world enter circulation from guide shell 3-11, described thin brilliant outlet 3-2-1 is positioned at the below of overfall 3-2-3.
Slurries carry out oxidation reaction in above-mentioned absorption tower 2-1, peripheral hardware oxidation pond 3-1 after flow in crystallizing pond 3-2, slurries enter from guide shell, turn back afterwards behind direction and enter described primary crystallization district, flows decrease and being evenly distributed, less gypsum crystal is condensed into greater particle size, when the gravity that gypsum crystal is subject to is greater than the buoyancy of current, crystal is deposited to the bottom of crystallizing pond 3-2, enters dewatering system from magma outlet 3-2-5.Do not have the small particle diameter gypsum crystal part of sedimentation to enter slurry pool of absorption tower as nucleus from thin brilliant outlet 3-2-1, remainder enters guide shell recirculation and grows up.
(4) dewatering system 4;
Described dewatering system 4 comprises hydrocyclone 4-1 and vacuum belt dewaterer 4-2, from crystallizing pond 3-2 discharge containing the slurries of greater particle size gypsum crystal after hydrocyclone 4-1 initial concentration, the underflow that solid content can reach more than 40% enters vacuum belt dewaterer 4-2, after further dehydration, generate by-produced gypsum and discharge system.The top stream solid content of hydrocyclone 4-1 is about 8%, is transported to slurrying case 1-3 and recycles.The filtrate of vacuum belt dewaterer enters the slurries district of absorption tower 2-1 as system water supplement.
(5) other accessory system.
Comprise as flue gas carries out the flue gas system 5 etc. of cooling processing.
In above-mentioned each system, absorption tower 2-1 is connected with the charging aperture of peripheral hardware oxidation pond 3-1 by circulation discharging opening 2-1-12, be connected with the first discharging opening 3-1-7 of peripheral hardware oxidation pond 3-1 by the first recycle feed mouth 2-1-11, the thin brilliant outlet 3-2-5 of crystallizing pond 3-2 is connected with the second recycle feed mouth of absorption tower 3-2, and the second discharging opening 3-1-4 of peripheral hardware oxidation pond 3-1 is connected with the charging aperture 3-2-2 of crystallizing pond 3-2.
The pipeline connected between absorption tower 2-1 and peripheral hardware oxidation pond 3-1 first discharging opening 3-1-7 is provided with flow control valve 3-8, and gas, the liquid import of described injector 3-10 are connected with the outlet of the second oxidation fan 3-9 and flow control valve 3-8 respectively.The pipeline connected between absorption tower circulation discharging opening 2-1-12 and peripheral hardware oxidation pond 3-1 is provided with jet pump 3-6, the outlet of described jet pump 3-6 is provided with check-valves 3-7, and gas, the liquid import of injector 3-4 are connected with the outlet of the first oxidation fan 3-5 and check-valves 3-7 respectively.Dynamic equilibrium is kept in order to make the liquid level in oxidation pond 3-1 and 2-1 slurries district, absorption tower, therebetween on connecting line, also alternative arranges the ballast pump (not shown) of adjust flux, if when absorption tower 2-1 liquid level is higher, self-balancing pump startup is to peripheral hardware oxidation pond 3-1 discharge opeing.
Because the liquid level of peripheral hardware oxidation pond 3-1 is higher than the liquid level in 2-1 slurries district, absorption tower, the slurry reflux arranging peripheral hardware oxidation pond 3-1 when check-valves 3-7 can avoid jet pump 3-6 to close causes its slurries district liquid level to raise the situation of overflow to absorption tower 2-1.Described check-valves 3-7 is configured on vertical pipeline section, the valve plate 3-7-3 that elastomeric material (as rubber blanket etc.) is made is provided with in its valve body, described valve body is consisted of ring flange and bolt 3-7-7 docking upper valve body 3-7-1 and lower valve body 3-7-2, because lower valve body 3-7-2 is less than upper valve body 3-7-1 at the bore of joint, form a terrace.Described valve plate 3-7-3 covers on the mouth of pipe terrace of upper and lower valve body joint formation, and outer rim lower surface and the described terrace of valve plate 3-7-3 fit, to seal the mouth of pipe of lower valve body 3-7-2.
The supporting member of gear below valve plate 3-7-3 is provided with in the mouth of pipe of described lower valve body 3-7-2, described supporting member comprises and is positioned at vertical baffle 3-7-8 in the middle part of the lower valve body mouth of pipe and many disc support muscle 3-7-5s perpendicular with dividing plate 3-7-8, and the two ends of dividing plate 3-7-8 are fixed on the tube wall of lower valve body 3-7-2.Disc support muscle 3-7-5 one end is connected with lower valve body 3-7-2 tube wall, and the other end is connected with dividing plate 3-7-8, and disc support muscle 3-7-5 flushes with the upper end of dividing plate 3-7-8, and valve plate 3-7-3 can be laid on disc support muscle 3-7-5 and dividing plate 3-7-8.
The position of described upper valve body 3-7-1 valve body dividing plate 3-7-8 under its mouth of pipe is aimed at also is provided with a dividing plate 3-7-4, and after upper and lower valve body docking, valve plate 3-7-3 is pressed abd fixed between the dividing plate of upper and lower valve body.Direction is furnished with parallel with dividing plate 3-7-8, many reinforcement 3-7-4s vertical with disc support muscle 3-7-5 in described valve plate 3-7-3.Valve plate 3-7-3 edge wherein line extends outward left and right two lug 3-7-11 (valve plate center line and two dividing plates are on straight line direction), after upper and lower valve body docking, valve plate lug 3-7-11 be clamped be fixed on upper and lower valve body ring flange between, be provided with sealing ring 3-7-6 between two ring flanges.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and the claimed scope of the utility model is defined by appending claims, description and equivalent thereof.
Claims (12)
1. a flue gas desulphurization system, comprises raw material system (1), absorption system (2), oxidizing and crystallizing system (3) and dewatering system (4), it is characterized in that:
Described oxidizing and crystallizing system (3) comprises crystallizing pond (3-2) and is positioned at the peripheral hardware oxidation pond (3-1) of crystallizing pond (3-2) top, the top of described peripheral hardware oxidation pond (3-1) is provided with charging aperture, and bottom is provided with the first discharging opening (3-1-7) and the second discharging opening (3-1-4);
Described absorption system (2) comprises absorption tower (2-1), and the slurries district of absorption tower (2-1) is provided with circulation discharging opening (2-1-12) and the first recycle feed mouth, the second recycle feed mouth; Described absorption tower (2-1) is connected by the charging aperture of circulation discharging opening (2-1-12) with peripheral hardware oxidation pond (3-1), is connected with first discharging opening (3-1-7) of peripheral hardware oxidation pond (3-1) by the first recycle feed mouth;
Described crystallizing pond (3-2) is connected with dewatering system (4) by the magma outlet (3-2-5) of bottom, crystallizing pond charging aperture is connected with second discharging opening (3-1-4) of peripheral hardware oxidation pond (3-1), and the top of crystallizing pond (3-2) is provided with the thin brilliant outlet (3-2-1) be connected with absorption tower second recycle feed mouth.
2. a kind of flue gas desulphurization system according to claim 1, is characterized in that:
Described peripheral hardware oxidation pond (3-1) is provided with columniform urceolus (3-1-6) and inner core (3-1-5), the reaction chamber of looping between described urceolus (3-1-6) and inner core (3-1-5), described inner core (3-1-5) is upper and lower opening, and runs through the cylindrical shell of whole peripheral hardware oxidation pond (3-1);
The guide shell (3-11) of upper and lower opening is provided with in described crystallizing pond (3-2), on the upper and lower edge of described guide shell (3-11) and crystallizing pond along and base plate between all leave certain distance, ring-shaped chamber between guide shell barrel and crystallizing pond pool wall is the primary crystallization district forming gypsum crystal, and the area of passage in described primary crystallization district is greater than the area of passage of guide shell (3-11); Described oxidizing and crystallizing system (3) comprises agitator, the motor portion of described agitator is arranged in the cylinder chamber of peripheral hardware oxidation pond (3-1) inner core, the blade of agitator is suspended in crystallizing pond guide shell (3-11) by axostylus axostyle, is advanced downwards by the liquid entering guide shell (3-11).
3. a kind of flue gas desulphurization system according to claim 2, is characterized in that:
Described crystallizing pond (3-2) is provided with columniform pond body, the base plate of back taper or arcs of recesses is provided with bottom its pond body, the internal diameter of crystallizing pond pond body is 2 ~ 4 with the internal diameter ratio of guide shell, the Sidewall Height of crystallizing pond pond body and the aspect ratio of guide shell are 1.5 ~ 3, and the Sidewall Height of crystallizing pond pond body and the ratio of height to diameter of its pond body internal diameter are 1 ~ 3.
4. a kind of flue gas desulphurization system according to claim 1,2 or 3, is characterized in that:
Anti-deposition butterfly base plate is provided with bottom described peripheral hardware oxidation pond (3-1) annular compartment, described anti-deposition butterfly base plate is surrounded by multiple fan ring element and is spliced to form, described fan ring element is obliquely installed, its side, arc inner edge is elevated, its arcing outer edges side is depressed, one end of its arcing outer edges is higher than the other end, make adjacent fan ring element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition butterfly base plate, described second discharging opening (3-1-4) is arranged on each trough low spot place of anti-deposition butterfly plate or the urceolus of corresponding described trough low spot.
5. a kind of flue gas desulphurization system according to claim 1,2 or 3, is characterized in that:
Described absorption tower (2-1) is provided with slurries district (2-1-1), gas approach (2-1-2), desulfurization section, demister (2-2-10) and exhanst gas outlet from bottom to top;
Described desulfurization section comprises baffling high gas velocity desulfurization section, and be provided with hydraulic barrier in described baffling high gas velocity desulfurization section, described hydraulic barrier is spliced to form by multi-disc A template and Type B plate:
Described A template is vertical baffle, some A templates are that center divergence expression is arranged in tower body, be separated out several fan-shaped reaction zones, baffling high gas velocity desulfurization zone is divided into some levels, the tower wall of each reaction zone is all provided with atomizer, in tower, spray desulfurization slurry, wherein the below of at least one reaction zone is provided with air inlet, and the top of at least one reaction zone is provided with gas outlet;
Described Type B plate is the fanning strip or butterfly plate that are obliquely installed, is arranged on top or the bottom of reaction zone at different levels, forms top board or the base plate of reaction zone at different levels, and one end that the Type B plate forming each top board is positioned at tower heart place is all downward-sloping, surrounds and is spliced to form funnel-form; Lowest part bottom the reaction zone arranging base plate is communicated with slurries district (2-1-1) by liquid return tube;
Certain distance is left between described A template and the Type B plate of top or bottom, form the gas passage excessively between adjacent reaction district, described gas passage of crossing is arranged between each adjacent reaction zone alternatively up and down, forms the shaped form gas flow of bending in baffling high gas velocity desulfurization section.
6. a kind of flue gas desulphurization system according to claim 5, is characterized in that:
Described desulfurization section is provided with entrance point low gas velocity desulfurization section and/or port of export low gas velocity desulfurization section, and described entrance point low gas velocity desulfurization section is positioned at below baffling high gas velocity desulfurization section, more than slurry pool, is provided with side direction or the reverse atomizer spraying slurries to flue gas; Described port of export low gas velocity desulfurization section is positioned at more than baffling high gas velocity desulfurization section, demister (2-1-10) below, is provided with side direction or the reverse atomizer spraying slurries to flue gas.
7. a kind of flue gas desulphurization system according to claim 1,2 or 3, is characterized in that:
The bottom on absorption tower (2-1) is provided with anti-deposition butterfly base plate, described anti-deposition butterfly base plate is surrounded by multiple sector element be obliquely installed and is spliced to form, its circle centre position is higher than its arcing outer edges, one end of its arcing outer edges is higher than the other end, make adjacent sector element splicing construction that is V-shaped or " V " type, make the overall outer rim undulate of anti-deposition butterfly base plate, evacuated tube at the bottom of tower is arranged on the trough low spot of anti-deposition butterfly plate or the tower wall of corresponding described trough low spot.
8. a kind of flue gas desulphurization system according to claim 1,2 or 3, is characterized in that:
The pipeline connected between absorption tower (2-1) circulation discharging opening and peripheral hardware oxidation pond (3-1) charging aperture is provided with check-valves (3-7), and described check-valves (3-7) is configured on vertical pipeline section;
The valve plate (3-7-3) that elastomeric material is made is provided with in the valve body of described check-valves (3-7), described valve body is consisted of ring flange docking upper valve body (3-7-1) and lower valve body (3-7-2), described valve plate (3-7-3) covers on the mouth of pipe terrace of upper and lower valve body joint formation, outer rim lower surface and the described terrace of valve plate (3-7-3) fit, and seal the mouth of pipe of lower valve body (3-7-2); Be provided with the supporting member of gear in dividing plate (3-7-3) below in the mouth of pipe of described lower valve body (3-7-2), the middle part of valve plate (3-7-3) is fixed on described supporting member; Be provided with in described valve plate (3-7-3) many with the reinforcement (3-7-4) of described supporting member direction interlaced arrangement.
9. a kind of flue gas desulphurization system according to claim 8, is characterized in that:
Described upper valve body (3-7-1) is provided with a dividing plate (3-7-4) in the middle part of its mouth of pipe, and after upper and lower valve body docking, valve plate (3-7-3) is pressed abd fixed on described supporting member.
10. the flue gas desulphurization system according to claim 1,2 or 3, is characterized in that:
The pipeline connecting the charging aperture of absorption tower circulation discharging opening (2-1-12) and peripheral hardware oxidation pond (3-1) is provided with the ballast pump of regulating flow quantity.
11. a kind of flue gas desulphurization systems according to claim 1,2 or 3, is characterized in that:
Described absorption tower (2-1), peripheral hardware oxidation pond (3-1) are for cylindrical; The first recycle feed mouth on described absorption tower (2-1) or the charging aperture of peripheral hardware oxidation pond (3-1) comprise multiple injector interface pipe be tangentially arranged on absorption tower (2-1) tower wall or oxidation pond (3-1) pool wall, and described injector interface pipe is connected with injector.
12. a kind of flue gas desulphurization systems according to claim 11, is characterized in that:
The axis of described injector interface pipe and the angle of absorption tower (2-1) or peripheral hardware oxidation pond (3-1) circumferential tangent line are 20 ° ~ 70 °, be 60 ° ~ 120 ° with the angle of vertical direction, described circumferential tangent line is the tangent line of injector interface pipe axis and absorption tower (2-1) tower wall outer surface or oxidation pond (3-1) pool wall outer surface place periphery intersection point.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305391.8U CN204637973U (en) | 2015-05-12 | 2015-05-12 | A kind of flue gas desulphurization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520305391.8U CN204637973U (en) | 2015-05-12 | 2015-05-12 | A kind of flue gas desulphurization system |
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| CN204637973U true CN204637973U (en) | 2015-09-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874282A (en) * | 2015-05-12 | 2015-09-02 | 江苏揽山环境科技有限公司 | Flue gas desulfurization system |
| CN110801727A (en) * | 2019-12-03 | 2020-02-18 | 山东默锐环境产业股份有限公司 | Scale-free zero-discharge wet desulfurization device and desulfurization method |
-
2015
- 2015-05-12 CN CN201520305391.8U patent/CN204637973U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874282A (en) * | 2015-05-12 | 2015-09-02 | 江苏揽山环境科技有限公司 | Flue gas desulfurization system |
| CN104874282B (en) * | 2015-05-12 | 2017-12-12 | 江苏揽山环境科技股份有限公司 | A kind of flue gas desulphurization system |
| CN110801727A (en) * | 2019-12-03 | 2020-02-18 | 山东默锐环境产业股份有限公司 | Scale-free zero-discharge wet desulfurization device and desulfurization method |
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Granted publication date: 20150916 Effective date of abandoning: 20171212 |