CN105169926B - A kind of flue gas desulphurization system and the method that flue gas desulfurization is carried out using it - Google Patents

Abstract

The present invention discloses a kind of flue gas desulphurization system and fume desulphurization method, wherein flue gas desulphurization system includes fume desulfurizing tower, store up apparatus for ash, gypsum preparation facilities and blower unit, fume desulfurizing tower includes tower body and the fume extractor being from top to bottom sequentially communicated, demister, cyclone reaction device, equal device of air and Multifunctional centralized liquid pool, flue gases duct has the dry powder entrance connected with dry powder desulfurizing agent injection apparatus, it is Multifunctional centralized liquid pool immediately below equal device of air, cyclone reaction device includes eddy flow shell body and the spin chamber of at least one cyclone is set at least one, spin chamber is provided with circular response injection point, spin chamber is connected with equal device of air, cyclone includes impeller housing, the impeller axis of centres and at least five swirl vanes, the swirl vane wound impeller axis of centres is set.Flue gas desulphurization system of the present invention improves flue gas desulfurization effect and desulfurization degree, saves space, it is not necessary to slurrying pond and slurry sediment pool, maintains easily, and cost is low and saves the energy, avoid polluting environment.

Description

A kind of flue gas desulphurization system and the method that flue gas desulfurization is carried out using it

Technical field

The present invention relates to a kind of desulfurizer and auxiliary device used in desulfurization, more particularly to a kind of flue gas desulfurization System.

It is more particularly to a kind of to carry out cigarette using foregoing smoke desulphurization system the invention further relates to a kind of fume desulphurization method The method of desulfurization.

Background technology

As social industry is continued to develop, industrialization degree more and more higher, production scale constantly expands, and is discharged into the cigarette of air Gas is also more and more, in the various gaseous contaminants impacted to air quality, SO₂The quantity of flue gas is maximum, influence Maximum, it causes acid rain, destroys ecological environment, influences the health of people.Therefore, these industrialization fume emissions to air it Before, it is required to be handled, wherein important is exactly desulfurization process.

At present, as illustrated in FIG. 1 be the more commonly used in flue gas desulfurization to be used to absorb SO₂Existing desulfurizing tower during flue gas Spray process desulfurization.Spray process desulfurizer include spray column, spray column from top to bottom include chimney 1, demister 2, spray chamber 3, Equal air chamber 4, circulatory pool 5, slurrying pond 511 and slurry sediment pool 522, some desulfurizers are further equipped with setting in accident pool, spray chamber The spray equipment of at least two layers or more layer.Equal air chamber 4 is used for the flue gas being uniformly delivered in desulfurizing tower, and EGR 6 is by stone The desulfurization slurries such as lime stone aqueous slurry, lime stone emulsion are delivered in spray chamber 3 in each spray equipment from circulatory pool 5, high-speed cruising Flue gas enter in spray equipment 3 and with the desulphurization reaction slurry liquid contacts that are sprayed at a high speed out of spray nozzle, in jet apparatus 3 The lower desulphurization reaction slurries injection of effect removes the dioxy in flue gas with being full of the smoke contacts of spray chamber 3 and carrying out desulphurization reaction Change sulphur.From spray chamber 3 by dropping down onto circulatory pool 5 under equal air chamber 4 after the reacting slurry drop of spray is with smoke contacts desulfurization The interior wait circulatory system 6 carries out desulfurization process after being sprayed after extracting again into spray equipment to flue gas.Do not sent out with flue gas The desulphurization reaction slurries of raw reaction also wait the circulatory system 6 to take out again from spray chamber 3 by being dropped down onto under equal air chamber 4 in circulatory pool 5 Desulfurization process is carried out to flue gas after being sprayed after taking into spray equipment.The flue gas of desulphurization reaction is sprayed to enterprising by spray chamber Enter in demister 2, because these flue gases carry slurry droplet, the desulphurization reaction slurry droplet that flue gas is carried to the greatest extent may be used by demister 2 The removing of energy ground, desulphurization reaction slurry droplet is dripped back into participates in desulfurization again in spin chamber 3, then desulphurization reaction slurry droplet passes through Circulatory pool 5 is dropped down onto under equal air chamber 4, when 5 excessive concentration of circulatory pool, the reacting slurry in circulatory pool 5 is extracted to slurry sediment pool 522, the higher desulphurization reaction slurries of the desulphurization reaction active ingredient concentration that is then made in by slurrying pond 511 are extracted to following In cisterna ambiens 5, spray is extracted to spray equipment 3 by circulation afterwards and carries out flue gas desulfurization.But the desulfurizing tower of present fountain Shortcoming be：First, spray equipment needs high-pressure pump to eject circulation desulfurization reacting slurry, it is therefore desirable to higher injection Pressure, therefore the observable index for the high-pressure pump prepared is higher, it is necessary to expend substantial amounts of electric energy, causes energy waste；Secondly, spray dress The nozzle put is easier to block up, and because the reacting slurry drop of spray can not have many chances and smoke contacts, and The drop of some desulphurization reaction slurries is not in contact with just falling with flue gas at all, therefore smoke desulfurization efficiency is not high, desulfurized effect It is bad；Further, since the spray equipment of multilayer is compared in configuration, cost is high, complicated, in addition it is also necessary to extra to set slurrying pond 511 With slurry sediment pool 522, therefore overall space-consuming is excessive, and maintenance cost is higher.

The content of the invention

The present invention is completed to solve of the prior art not enough, and it is an object of the invention to provide a kind of letter of structure Single, the first progress once pre- desulfurization in advance in flue gases duct before flue gas desulfurization is carried out, and it is anti-to carry out cyclone desulfuration afterwards Should, flue gas desulfurization effect and desulfurization degree are improved, space-consuming is saved, it is no longer necessary to slurrying pond and slurry sediment pool, facilitates later maintenance, Maintenance cost is low, and effectively saves the energy and avoid polluting environment, while with circular response slurries and desulfurated plaster can be prepared Flue gas desulphurization system.

A kind of flue gas desulphurization system of the present invention, including fume desulfurizing tower, storage apparatus for ash, gypsum preparation facilities and air inducing dress Put, the storage apparatus for ash, blower unit and gypsum preparation facilities are connected with fume desulfurizing tower, and the fume desulfurizing tower includes tower Body and the fume extractor from top to bottom set along the tower body, demister, cyclone reaction device, equal device of air and Multifunctional centralized Liquid pool, by for reacting slurry to be pumped into the cyclone reaction between the Multifunctional centralized liquid pool and the cyclone reaction device It is connected at the top of the serum recycle system connectivity on device top, the demister with the fume extractor, the cyclone reaction dress The top put is connected with the bottom of the demister, and the cyclone reaction bottom of device is connected with the equal device of air top, The equal device of air is connected with flue gases duct, and the flue gases duct offers dry powder entrance at the equal device of air, described Dry powder entrance is connected with the dry powder desulfurizing agent injection apparatus for spraying dry powder to the dry powder entrance, the dry powder desulfurizing agent spray Injection device front end, towards in the equal device of air and consistent with the flue gas inflow direction, is many work(immediately below the equal device of air Can collecting tank, the cyclone reaction device includes eddy flow shell body and horizontally arranged is arranged in the eddy flow shell body at least At least one cyclone is horizontally disposed with Liang Ge spin chambers, the spin chamber, the spin chamber top is provided with circular response slurry Connected below liquid entrance, the spin chamber with equal device of air, the cyclone includes horizontally disposed swirl vanes, the eddy flow Impeller includes being arranged at the impeller housing of periphery, is arranged at the impeller axis of centres and at least five spiralling eddy flows in center Blade, the swirl vane is set around the impeller axis of centres, and the impeller housing is fixed in the spin chamber, the rotation The inside edge of stream blade is fixed with the impeller axis of centres, and the outer ledge of the swirl vane is consolidated with the impeller housing Fixed, the blower unit is connected with the flue gases duct, and the storage apparatus for ash is connected with the dry powder desulfurizing agent injection apparatus, institute Gypsum preparation facilities is stated to connect with the Multifunctional centralized liquid pool bottom.

A kind of flue gas desulphurization system of the present invention, including fume desulfurizing tower, storage apparatus for ash, gypsum preparation facilities and air inducing dress Put, the storage apparatus for ash, blower unit and gypsum preparation facilities are connected with fume desulfurizing tower, and the fume desulfurizing tower includes tower Body and the fume extractor from top to bottom set along the tower body, demister, cyclone reaction device, equal device of air and Multifunctional centralized Liquid pool, by for reacting slurry to be pumped into the cyclone reaction between the Multifunctional centralized liquid pool and the cyclone reaction device It is connected at the top of the serum recycle system connectivity on device top, the demister with the fume extractor, the cyclone reaction dress The top put is connected with the bottom of the demister, and the cyclone reaction bottom of device is connected with the equal device of air top, The equal device of air is connected with flue gases duct, and the flue gases duct offers dry powder entrance at the equal device of air, described Dry powder entrance is connected with the dry powder desulfurizing agent injection apparatus for spraying dry powder to the dry powder entrance, the dry powder desulfurizing agent spray Injection device front end, towards in the equal device of air and consistent with the flue gas inflow direction, is many work(immediately below the equal device of air Can collecting tank, the cyclone reaction device includes eddy flow shell body and horizontally arranged is arranged in the eddy flow shell body at least At least one cyclone is horizontally disposed with Liang Ge spin chambers, the spin chamber, the spin chamber top is provided with circular response slurry Connected below liquid entrance, the spin chamber with equal device of air, the cyclone includes horizontally disposed swirl vanes, the eddy flow Impeller includes being arranged at the impeller housing of periphery, is arranged at the impeller axis of centres and at least five spiralling eddy flows in center Blade, the swirl vane is set around the impeller axis of centres, and the impeller housing is fixed in the spin chamber, the rotation The inside edge of stream blade is fixed with the impeller axis of centres, and the outer ledge of the swirl vane is consolidated with the impeller housing Fixed, the blower unit is connected with the flue gases duct, and the storage apparatus for ash is connected with the dry powder desulfurizing agent injection apparatus, institute Gypsum preparation facilities is stated to connect with the Multifunctional centralized liquid pool bottom.When in use, blower unit is used to flue gas introducing flue gas The flue gas of flue gas push above is conveyed into equal device of air in flue and constantly to flue gases duct.Fume desulfurizing tower is used for flue gas Desulfurization, storage apparatus for ash is used to store the dry powder desulfurizing agent such as quick lime, and is sprayed by the dry powder desulfurizing agent injection apparatus being attached thereto Inject and mix the pre- desulfurization of progress in flue gases duct with flue gas, and gypsum preparation facilities is used for Multifunctional centralized liquid pool in communication The reacting slurry containing more deposit of inner bottom part extracts latter aspect and prepares desulfurated plaster, on the other hand follows reacting slurry Loopback Multifunctional centralized liquid pool carries out follow-up desulphurization reaction.Need desulfurization process flue gas will enter equal device of air when, from Dry powder desulfurizing agent injection apparatus sprays into the dry powder desulfurizing agents such as quick lime, and dry powder desulfurizing agent mixes progress with the flue gas in flue gases duct First time desulfurization, i.e., pre- desulfurization, the flue gas after pre- desulfurization is carried after unreacted dry powder desulfurizing agent enters equal device of air and entered back into Cyclone reaction device carries out cyclone desulfuration reaction, demister is entered back into afterwards, the flue gas after desulfurization risen in demister The reacting slurry gradually repeatedly removed in flue gas is to carry out demisting, and due to dry powder desulfurizing agent pre-desulfurization, desulfurization is then carried out again Flue gas is fully contacted with desulphurization reaction slurries and fully reacted in the cyclone desulfuration of reacting slurry, cyclone desulfuration, and desulfuration efficiency is more Height, and dry powder desulfurizing agent first carried out after pre- desulfurization, and flue gas carries dry powder desulfurizing agent and enters equal device of air, anti-subsequently into eddy flow Answer and the high desulphurization reaction slurries of desulfurization active ingredient are formed after being contacted in device with the water in desulphurization reaction slurries, i.e., it plays system The effect of slurry, some dry powder desulfurizing agent voluntarily falls to Multifunctional centralized liquid pool after equal device of air is entered with flue gas Interior, this part dry powder desulfurizing agent takes off with the upper water in Multifunctional centralized liquid pool or the water contact preparation filled into from water replanishing device Reaction of Salmon-Saxl slurries, i.e. its also slurrying effect in addition to desulfidation, when the sediment in Multifunctional centralized liquid pool is excessive, take off When desulfurizing agent composition in reaction of Salmon-Saxl slurries is not enough, sediment from Multifunctional centralized liquid pool can be delivered to gypsum preparation facilities system Standby desulfurated plaster, and the dry powder desulfurizing agent sprayed into and the water in reacting slurry are combined to form with good newly anti-of desulfurizer activity Slurries are answered, rinse water or the water and the dry powder desulfurizing agent formation desulphurization reaction slurries of whereabouts that fill into carry out slurrying.When desulfurizing agent is dense When spending high, demister can be cleaned so that rinse water carries reacting slurry and enters the at most work(that falls after cyclone reaction device Energy collecting tank, can also add in water, rinse water or the water filled into separately through water replanishing device and desulfurization active ingredient concentration is high Desulphurization reaction slurries so that effective sweetening component in desulphurization reaction slurries concentration reduction.And run with certain flow rate Flue gas enter cyclone after, with swirl vane hit, due to flue gas first by cyclone swirl vanes change flow direction turn Stopped in the suspension eddy flow layer that eddy flow flue gas as being changed into cyclone, flue gas and desulphurization reaction slurries are formed above cyclone And fully contact, for existing spray desulfurizer, desulphurization reaction slurries are fully contacted with flue gas so that reaction efficiency Greatly improve, desulfurized effect and to depart from efficiency be at least 2-3 times of spray desulfurizer desulfurization, desulfurization is more thorough, after desulfurization Sulfur content is very little in flue gas, accomplishes environmental sound substantially.Slurrying pond and sedimentation basin are so no longer needed, one multi-functional Collecting tank can realize slurrying, loop slurry and sediment slurry.Space is saved, while saving cost, can be recycled Slurries energy-conserving and environment-protective, desulfurized effect is more preferable.Therefore flue gas desulphurization system of the present invention has the advantage that in terms of existing technologies It is：Simple in construction, the first progress once pre- desulfurization, and being revolved afterwards in advance in flue gases duct before flue gas desulfurization is carried out Flow desulfurization reacts, and improves flue gas desulfurization effect and desulfurization degree, saves space-consuming, it is no longer necessary to slurrying pond and slurry sediment pool, convenient Later maintenance, maintenance cost is low, and effectively saves the energy and avoid polluting environment.

It is a further object of the present invention to provide one kind using said structure it is simple, before flue gas desulfurization is carried out elder generation in flue gas Once pre- desulfurization is carried out in flue in advance, and carries out cyclone desulfuration reaction afterwards, flue gas desulfurization effect and desulfurization degree, section is improved Save space-consuming, it is no longer necessary to slurrying pond and slurry sediment pool, facilitate later maintenance, maintenance cost is low, and effectively save the energy and keep away Exempt to pollute the method that the flue gas desulphurization system of environment carries out flue gas desulfurization.

A kind of method of flue gas desulfurization of the present invention, comprises the following steps：

A. need the flue gas of desulfurization to be transported to flue gases duct by blower unit, gas is pushed to by follow-up flue gas afterwards Device, when close to equal device of air, storage apparatus for ash sprays to dry powder desulfurizing agent injection apparatus delivery of dry powder desulfurizing agent, dry powder desulfurizing agent Injection device sprays into dry powder desulfurizing agent to flue gases duct, and dry powder desulfurizing agent is sprayed to flue gases duct towards equal device of air direction, does Powder desulfurizing agent carries out pre- desulfurization with flue gas hybrid reaction；

B. the flue gas for having carried out the pre- desulfurization of step A enters in equal device of air, and full of equal device of air, it is anti-into eddy flow afterwards Each spin chamber of device is answered, after the Cyclonic reactor in spin chamber, changes its direction of motion for eddy flow as cyclone Motion；

C. the reacting slurry in Multifunctional centralized liquid pool is extracted and is delivered to cyclone reaction device top by serum recycle system, Enter from each spin chamber top in spin chamber, the flue gas of the swirling motion of reacting slurry and high speed meets, both interact simultaneously Suspension eddy flow layer is formed in the top of Cyclonic reactor in the presence of the upward impulsive force of flue gas, flue gas and reacting slurry are suspending Fully contact, mix and react in eddy flow layer, i.e. progress cyclone desulfuration reaction, when reacting slurry is constantly fallen, suspension eddy flow layer When thickness is excessive, partial reaction slurries dropped through from suspension eddy flow layer after Cyclonic reactor fallen into by equal device of air it is multi-functional Waited in collecting tank and carried out desulphurization reaction with flue gas after the extraction of serum recycle system again；

Flue gas in D.C steps after progress cyclone desulfuration reaction, which continues to ascend into demister, to be carried out at demisting Reason, the reacting slurry that flue gas is carried is removed；

Flue gas after the processing of E.D steps demisting is emitted into ambient atmosphere by exhaust apparatus；

F. when deposit is more in Multifunctional centralized liquid pool, containing for Multifunctional centralized liquid pool bottom is extracted using gypsum preparation facilities Have the reacting slurry of more deposit, prepare desulfurated plaster and export, at the same filtering after reacting slurry turned round be delivered to it is many Desulphurization reaction is carried out after function collecting tank interior circulation.Flue gas after the processing of E.D steps demisting is emitted into the external world by exhaust apparatus In air.

A kind of method that flue gas desulfurization is carried out using it of the present invention, due to including above-mentioned steps, therefore blower unit will Flue gas is introduced into flue gases duct and constantly conveys the flue gas of flue gas push above into equal device of air to flue gases duct, after convenience The continuous desulphurization reaction carried out, when the flue gas for needing desulfurization process will enter equal device of air, with delivery of dry powder in storage apparatus for ash Desulfurizing agent to dry powder desulfurizing agent injection apparatus, dry powder desulfurizing agent injection apparatus sprays into the dry powder desulfurization such as quick lime into flue gases duct Agent, dry powder desulfurizing agent mixes progress first time desulfurization with the flue gas in flue gases duct, i.e., pre- desulfurization, the flue gas after pre- desulfurization is carried Part dry powder enters back into cyclone reaction device after entering equal device of air, afterwards into demister, rises in demister The reacting slurry that flue gas after desulfurization is gradually repeatedly removed in flue gas is to carry out demisting, due to dry powder desulfurizing agent pre-desulfurization, then Slurries desulfurization is carried out again, and desulfuration efficiency is higher, and the pre- desulfurization rear portion dry powder desulfurizing agent of dry powder is carried along into by flue gas Equal device of air, later falls into Multifunctional centralized liquid pool, conveniently forms desulphurization reaction slurries, that is, complete slurrying.When Multifunctional centralized liquid pool , can be by the reaction containing a large amount of sediments when the desulfurizing agent composition in desulphurization reaction slurries is not enough when interior sediment is excessive Slurries are delivered to gypsum preparation facilities from Multifunctional centralized liquid pool and prepare desulfurated plaster, and the dry powder desulfurizing agent and reacting slurry sprayed into Interior water is combined to form with the good new reacting slurry of desulfurizer activity, rinse water or the water filled into and the dry powder desulfurization of whereabouts Dosage form carries out slurrying into desulphurization reaction slurries, and then improves the concentration of effective sweetening component in reacting slurry.When desulfurization agent concentration When too high, demister can be cleaned so that rinse water carries reacting slurry and enters cyclone reaction device and eventually fall into many work( Energy collecting tank, can also add water, rinse water or the water filled into fall into Multifunctional centralized liquid pool so that de- separately through water replanishing device The concentration reduction of effective sweetening component in reaction of Salmon-Saxl slurries.And the flue gas run with certain flow rate enters after cyclone, Hit with swirl vane, because flue gas changes eddy flow cigarette as flow direction is changed into cyclone by the swirl vanes of cyclone first Stop and fully contact in the suspension eddy flow layer that gas, flue gas and desulphurization reaction slurries are formed above cyclone, compared to existing Spray desulfurizer for, desulphurization reaction slurries are fully contacted with flue gas so that reaction efficiency is greatly improved, desulfurized effect and It is at least 2-3 times of spray desulfurizer desulfurization to depart from efficiency, and desulfurization is more thorough, in flue gas after desulfurization sulfur content it is micro- its It is micro-, accomplish environmental sound substantially.Slurrying pond and sedimentation basin are so no longer needed, a Multifunctional centralized liquid pool can realize system Slurry, loop slurry and sediment slurry.Space is saved, while saving cost, slurries energy-conserving and environment-protective, desulfurization effect can be recycled Fruit is more preferably.Gypsum preparation facilities prepares desulfurated plaster after the more reacting slurries of deposit are extracted, while removing deposit Reacting slurry turn round to be delivered in Multifunctional centralized liquid pool again and carry out follow-up desulphurization reaction.Have in terms of existing technologies Advantage is：It is simple in construction, carry out flue gas desulfurization before first in flue gases duct in advance carry out once pre- desulfurization, and it is laggard Row cyclone desulfuration reacts, and improves flue gas desulfurization effect and desulfurization degree, saves space-consuming, it is no longer necessary to slurrying pond and slurry sediment pool, Facilitate later maintenance, maintenance cost is low, and effectively save the energy and avoid polluting environment.

Brief description of the drawings

Fig. 1 flue gas desulphurization system schematic diagrames in the prior art.

Fig. 2 flue gas desulphurization system schematic diagrames of the present invention.

Cyclone reaction device side view in Fig. 3 flue gas desulphurization systems of the present invention.

Cyclone reaction device top plan in Fig. 4 flue gas desulphurization systems of the present invention.

Eddy flow shell body top plan in Fig. 5 flue gas desulphurization systems of the present invention.

Cross-sectional view in the middle part of spin chamber in Fig. 6 flue gas desulphurization systems of the present invention.

Cyclonic reactor force principal figure in Fig. 7 A the utility model flue gas desulphurization systems.

Another embodiment force principal figure of Fig. 7 B the utility model flue gas desulphurization system Cyclonic reactors.

Cyclone reaction device flue gas conditioning device partial side view in Fig. 8 flue gas desulphurization systems of the present invention.

Cyclone reaction device flue gas conditioning device schematic diagram in Fig. 9 flue gas desulphurization systems of the present invention.

Demister schematic diagram in Figure 10 flue gas desulphurization systems of the present invention.

Partial enlarged drawing in demister Figure 10 in Figure 11 flue gas desulphurization systems of the present invention.

Demister longitdinal cross-section diagram in Figure 12 flue gas desulphurization systems of the present invention.

H portions enlarged drawing in demister Figure 12 in Figure 13 flue gas desulphurization systems of the present invention.

Multifunctional centralized liquid pool partial enlarged drawing in Fig. 2 in Figure 14 flue gas desulphurization systems of the present invention.

Multifunctional centralized liquid pool top view in Figure 15 flue gas desulphurization systems of the present invention.

Multifunctional centralized liquid pool view in transverse section in Figure 16 flue gas desulphurization systems of the present invention.

Multifunctional centralized liquid pool side view in Figure 17 flue gas desulphurization systems of the present invention.

Gypsum preparation facilities schematic diagram in Figure 18 the utility model flue gas desulphurization systems.

Figure number explanation

1 ... fume extractor 2 ... demister 3 ... flue gas desulphurization system

4 ... equal device of air 5 ... Multifunctional centralized liquid pool 6 ... serum recycle systems

7 ... flue gases duct 8 ... dry powder desulfurizing agent injection apparatus 9 ... gypsum preparation facilities

10 ... solenoid electric valves 11 ... are except fog chamber 12 ... demister

13 ... demisting blade 14 ... demisting cleaning device 15 ... demisting flush water pumps

16 ... demisting water tank 17 ... flushing waters supervisor 18 ... flushing water branch pipe

19 ... washer jet 20 ... collecting tank body 21 ... solarization air caps

22 ... oxidation fan 23 ... oxidation winds enter tower tube 24 ... oxidation and aeration pipe

25 ... oxidation wind endless tubes 26 ... are aerated support 27 ... agitator

28 ... rotating driving devices 29 ... stir rotary shaft 30 ... stirring vane

31 ... eddy flow shell body 32 ... spin chamber 33 ... Cyclonic reactors

34 ... circular response injection point 35 ... flap valve 36 ... electric operators

37 ... conical expansion region 38 ... flue gas regulation lids 39 ... open pawl

40 ... flue gases regulation jointed shaft 41 ... jointed shaft support member 42 ... tower wall sealing device

43 ... impeller housing 44 ... swirl vanes 45 ... the impeller axis of centres

46 ... swirl vane 47 ... dry powder desulfurizing agent playpipe 48 ... ejecting guns

49 ... fixed stations 50 ... store up apparatus for ash 51 ... blower unit

52 ... ash-storing bin 53 ... charge gun 54 ... gypsum excavationg pumps

55 ... plaster serum rotational flow device 56 ... vacuum band-type filter machines

Embodiment

Fig. 2 below in conjunction with the accompanying drawings to Figure 18 carries out flue gas desulfurization to a kind of flue gas desulphurization system of the present invention and using it Method is described in further detail.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, including fume desulfurizing tower, storage apparatus for ash 50, stone Cream preparation facilities 9 and blower unit 51, the storage apparatus for ash 50, blower unit 51 and gypsum preparation facilities 9 are and flue gas desulfurization Tower is connected, and the fume desulfurizing tower includes tower body and the fume extractor 1 from top to bottom set along the tower body, demister 2, rotation Reaction unit 3, equal device of air 4 and Multifunctional centralized liquid pool 5 are flowed, between the Multifunctional centralized liquid pool 5 and the cyclone reaction device 3 Connected by the serum recycle system 6 for reacting slurry to be pumped into the top of cyclone reaction device 3, the demister 2 Top is connected with the fume extractor 1, and the top of the cyclone reaction device 3 is connected with the bottom of the demister 2, described The bottom of cyclone reaction device 3 is connected with the equal top of device of air 4, and the equal device of air 4 is connected with flue gases duct 7, the cigarette Gas flue 7 offers dry powder entrance at the equal device of air 4, and the dry powder entrance sprays with being used for the dry powder entrance The dry powder desulfurizing agent injection apparatus 8 of dry powder is connected, the front end of dry powder desulfurizing agent injection apparatus 8 towards in the equal air chamber 4 simultaneously It is consistent with the flue gas inflow direction, it is Multifunctional centralized liquid pool 5 immediately below the equal device of air 4, the cyclone reaction device 3 is wrapped Include eddy flow shell body 31 and horizontally arranged at least two spin chambers 32 being arranged in the eddy flow shell body 31, the spin chamber At least one cyclone 33 is horizontally disposed with 32, the top of spin chamber 32 is provided with circular response injection point 34, the rotation The lower section of flow chamber 32 is connected with equal device of air 4, and the cyclone 33 includes horizontally disposed swirl vanes 44, the swirl vanes 44 Including the spiralling eddy flow of the impeller axis of centres 45 and at least five for being arranged at the impeller housing 43 of periphery, being arranged at center Blade 46, the swirl vane 46 is set around the impeller axis of centres 45, and the impeller housing 43 is fixed on the spin chamber In 32, the inside edge of the swirl vane 46 is fixed with the impeller axis of centres 45, the outer ledge of the swirl vane 46 Fixed with the impeller housing 43, the blower unit 51 is connected with the flue gases duct 7, the storage apparatus for ash 50 is done with described Powder desulfurizing agent injection apparatus 8 is connected, and the gypsum preparation facilities 9 is connected with the bottom of Multifunctional centralized liquid pool 5.So using When, blower unit 51 is used to introduce flue gas conveys the cigarette of flue gas push above in flue gases duct 7 and constantly to flue gases duct 7 Gas is into equal device of air 4.Fume desulfurizing tower is used for flue gas desulfurization, and storage apparatus for ash 50 is used to store the dry powder desulfurizing agent such as quick lime, And spurt into flue gases duct 7 to mix with flue gas by the dry powder desulfurizing agent injection apparatus 8 being attached thereto and carry out pre- desulfurization, and stone Cream preparation facilities 9 is used to extract the reacting slurry containing more deposit of the inner bottom part of Multifunctional centralized liquid pool 5 in communication Latter aspect prepares desulfurated plaster, and reacting slurry on the other hand is recycled back into Multifunctional centralized liquid pool 5 carries out follow-up desulphurization reaction. Need the flue gas of desulfurization to enter equal device of air 4 from flue gases duct 7 first, cyclone reaction is upwardly into after full of equal device of air 4 Cyclone desulfuration reaction is carried out in device 3, specially flue gas enters in spin chamber 32, and passes through the swirl vanes 44 in spin chamber 32 It is the centrifugal cyclone motion similar to tornado to change its motion mode, and then flue gas holds up and circulated from Multifunctional centralized liquid pool 5 Desulphurization reaction slurries in spin chamber 32 and fully reaction carries out desulfurization therewith, then the flue gas after desulphurization reaction is from spin chamber 32 flue gases for being upwardly into after the reacting slurry that flue gas carrying is removed in demister 2, demisting drain into air from fume extractor 1 It is interior, and the partial reaction slurries after being reacted in spin chamber 32 with flue gas fall to Multifunctional centralized after passing through equal device of air 4 In liquid pool 5, the more reacting slurries of deposit are deposited on the bottom of Multifunctional centralized liquid pool 5, deposit few reacting slurry and are located at Position relatively more top in Multifunctional centralized liquid pool 5, it is waited is extracted Posterior circle by serum recycle device 6 to cyclone reaction dress again Put and desulphurization reactions carried out in 3, when the more deposits of the bottom deposit of Multifunctional centralized liquid pool 5, start gypsum preparation facilities 9 from The bottom of Multifunctional centralized liquid pool 5 extracts the reacting slurry containing more deposit of bottom and extraction prepares desulfurated plaster.In addition this The flue gas desulfurization device of sample when in use, need desulfurization process flue gas will enter equal device of air 4 when, from dry powder desulfurizing agent Injection apparatus 8 sprays into the dry powder desulfurizing agents such as quick lime, and it is de- for the first time that dry powder desulfurizing agent mixes progress with the flue gas in flue gases duct 7 Sulphur, i.e., pre- desulfurization, the flue gas after pre- desulfurization carries after unreacted dry powder desulfurizing agent enters equal device of air 4 and enters back into cyclone reaction Device 3 carries out cyclone desulfuration reaction, and demister 2 is entered back into afterwards, and the flue gas after desulfurization risen in demister 2 is gradually more Drop in secondary removing flue gas is to carry out demisting, and due to dry powder desulfurizing agent pre-desulfurization, desulphurization reaction slurries are then carried out again Flue gas is fully contacted with desulphurization reaction slurries and fully reacted in cyclone desulfuration, cyclone desulfuration, and desulfuration efficiency is higher, and dry powder Desulfurizing agent first carries out pre- flue gas after desulfurization and carries dry powder desulfurizing agent entering equal device of air 4, subsequently into cyclone reaction device 3 with The high desulphurization reaction slurries of desulfurization active ingredient are formed after water contact in desulphurization reaction slurries, i.e., it plays a part of slurrying, Some dry powder desulfurizing agent is voluntarily fallen in Multifunctional centralized liquid pool 5, this portion after equal device of air 4 is entered with flue gas Divide dry powder desulfurizing agent and the upper water in Multifunctional centralized liquid pool 5 or the water contact preparation desulphurization reaction filled into from water replanishing device Slurries (desulfurization slurry, reacting slurry), i.e. its also slurrying effect in addition to desulfidation, when in Multifunctional centralized liquid pool 5 When sediment is excessive, when the desulfurizing agent composition in desulphurization reaction slurries is not enough, sediment can be conveyed from Multifunctional centralized liquid pool 5 Desulfurated plaster is prepared to gypsum preparation facilities 9, and the dry powder desulfurizing agent sprayed into is combined to form with de- with the water in reacting slurry The good new reacting slurry of sulphur agent activity, rinse water or the water and the dry powder desulfurizing agent formation desulphurization reaction slurries of whereabouts that fill into enter Row slurrying so that the concentration of effective sweetening component in desulphurization reaction slurries is improved.When desulfurizing agent excessive concentration, it can clean Demister 2 so that rinse water carries after reacting slurry enters cyclone reaction device 3 to fall to multi-functional collecting tank 5, can be with Added separately through water replanishing device in water, rinse water or the water filled into and the high desulphurization reaction slurries of desulfurization active ingredient concentration, So that the concentration reduction of effective sweetening component in desulphurization reaction slurries.And the flue gas run with certain flow rate enters cyclone After 33, hit with swirl vane 46, spout is changed into because flue gas changes flow direction by the swirl vanes 44 of cyclone 33 first Stopped and abundant in the suspension eddy flow layer that eddy flow flue gas as wind, flue gas and desulphurization reaction slurries are formed in the top of cyclone 33 Contact.For existing spray desulfurizer, desulphurization reaction slurries and flue gas are abundant in desulfuration reaction device of the invention Contact so that reaction efficiency is greatly improved, desulfurized effect and disengaging efficiency are at least 2-3 times of spray desulfurizer desulfurization, are taken off Sulphur is more thorough, and sulfur content is very little in flue gas after desulfurization, accomplishes environmental sound substantially.So no longer need slurrying pond and Sedimentation basin, a Multifunctional centralized liquid pool 5 can realize slurrying, loop slurry and sediment slurry.Space is saved, is saved simultaneously Cost, can recycle slurries energy-conserving and environment-protective, and desulfurized effect is more preferable.And when because producing the part in the production process of flue gas Stop production, maintenance and other uncontrollable factors and cause enter equal device of air 4 in exhaust gas volumn not enough, i.e., flue gas flow rate is too low When, control is located at the flue gas flow adjusting means at the top of spin chamber 32, closes part spin chamber 32, and remaining spin chamber 32 is normally transported OK, it is ensured that the flue gas flow rate entered in each spin chamber 32 being currently running is still the numerical value in preset range, and therefore, this is several Cyclone 33 in individual spin chamber 32 normally lifts the suspension eddy flow layer of normal thickness value range after operation, and then ensure to enter should The desulfuration efficiency and desulfurization degree of flue gas in spin chamber 32, it is ensured that the reacting slurry of suspension fully reacts with flue gas, reduce desulfurization Sulfur content after reaction in flue gas.Therefore a kind of flue gas desulphurization system of the present invention has the advantage that in terms of existing technologies It is：It is simple in construction, ensure that flue gas and the abundant reaction desulfuration of desulphurization reaction slurries, can according to enter equal device of air 4 need Carry out desulfurization process flue gas amount selection to flue gas carry out desulphurization reaction spin chamber 32 quantity, and then effectively control into Enter to carry out in spin chamber 32 flow velocity of the flue gas of desulphurization reaction, it is ensured that flue gas desulfurization effect and desulfurization degree, effectively save the energy and Avoid polluting environment.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The front end of dry powder desulfurizing agent injection apparatus 8 is set towards the equal direction of device of air 4, and the dry powder desulfurization The front end injection direction of agent injection apparatus 9 and the flue gas inflow direction angle are acute angle.So, the dry powder desulfurizing agent of penetrating is promoted Flue gas travels forward, while many and smoke contacts carry out desulfurization and carried as much as possible by flue gas to equal device of air as much as possible 4 and other plant runnings.It can also be that the dry powder desulfurizing agent injection apparatus 8 includes the dry powder desulfurization being connected with charge gun 53 Agent playpipe 47 and the ejecting gun 48 for being arranged at the end of dry powder desulfurizing agent playpipe 47, the ejecting gun 48 are done with described The connection of powder desulfurizing agent playpipe 47 is fixed, and the front portion of the ejecting gun 48 passes through the dry powder entrance, and the ejecting gun 48 is anterior Stretch into the flue gases duct 7, the storage apparatus for ash is ash-storing bin 52, and the ash-storing bin 52 is connected with the charge gun 53.This The internal memory of sample ash-storing bin 52 contains dry powder desulfurizing agent in the dry powder desulfurizing agent such as quick lime, ash-storing bin 52 and enters charge gun 53, charge gun Dry powder desulfurizing agent is filled with dry powder desulfurizing agent playpipe 47 in the presence of 53 compressed airs and causes dry powder desulfurizing agent from injection The front end of rifle 48 is injected directly into flue gases duct 7 mixed with flue gas after carry out pre- desulfurization process.And the front end of ejecting gun 48 passes through and done Powder entrance, which is stretched into flue gases duct 7, ensures that dry powder desulfurizing agent is directly acted on flue gas, it is to avoid dry powder desulfurizing agent runs out of flue gas Outside flue 7, cause dry powder desulfurizing agent to waste, influence overall desulfurized effect and flue gas desulphuization rate.Further preferred technical side Case is is provided with fixed station 49 between the ejecting gun 48 and the dry powder entrance, the fixed station 49 is fixed on the flue gas cigarette On road 7, the middle and lower part of fixed station 49 is connected with the dry powder entrance, and the front end of ejecting gun 48 is inserted in the fixed station 49 And be sealingly fastened on the fixed station 49.So the middle and lower part of fixed station 49 is connected with dry powder entrance, and fixed station is fixed on flue gas On flue, and ejecting gun front end is inserted fixed station and sealed and is fixed on fixed station 49, it is ensured that the front end of ejecting gun 48 takes off dry powder Sulphur agent is injected directly into flue gases duct 7.Advantage is fixation, and ejecting gun 48 is not fallen out, and dry powder desulfurizing agent is not It can run out of outside flue gases duct 7, it is ensured that the pre- desulphurization reaction of flue gas is carried out, and flue gas desulfurization effect and flue gas desulphuization rate is effectively ensured.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The gypsum preparation facilities 9 includes gypsum excavationg pump 53, plaster serum rotational flow device 45 and vacuum band-type filter machine 55, the gypsum excavationg pump 53 is connected with the bottom of Multifunctional centralized liquid pool 5, the plaster serum rotational flow device 54 and the gypsum Excavationg pump 53 is connected, and the plaster serum rotational flow device 54 is provided with gypsum outlet and reacting slurry outlet, the gypsum slurries The outlet of the gypsum of cyclone 54 is connected with the vacuum band-type filter machine 55, the outlet of the shown reacting slurry of plaster serum rotational flow device 54 and The top of Multifunctional centralized liquid pool 5 connection.So, more deposit is contained in the bottom of Multifunctional centralized liquid pool 5 by gypsum excavationg pump 53 Reacting slurry extract and be delivered in plaster serum rotational flow device 54, the cyclonic action by gypsum cyclone 54 causes instead Answer the deposit in slurries to be separated with liquid reactions slurries, prepare desulfurated plaster, while isolating the reacting slurry of deposit Returned to by circulating line in Multifunctional centralized liquid pool 5 and continue cycling through and carry out desulfurization.It can also be based on the blower unit Air-introduced machine exists, and main induced draft fan is used to flue gas being delivered in flue gases duct 7.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The spin chamber at least two, at least one described top of spin chamber 32 is provided with the spin chamber able to turn on or off The flue gas flow adjusting means at 32 tops, the flue gas flow adjusting means is connected with the top of spin chamber 32.And when because Produce the partial outage in the production process of flue gas, maintenance and other uncontrollable factors and to enter in equal device of air 4 Not enough, i.e., when flue gas flow rate is too low, control is located at the flue gas flow adjusting means at the top of spin chamber 32 to exhaust gas volumn, closes part and revolves Flow chamber 32, remaining spin chamber 32 is normally run, it is ensured that be still into the flue gas flow rate in each spin chamber 32 being currently running Numerical value in preset range, therefore, the cyclone 33 in these spin chambers 32 lift normal range value thickness after normally running Suspension eddy flow layer, and then ensure the desulfuration efficiency and desulfurization degree of flue gas entered in the spin chamber 32, it is ensured that suspension it is anti- Slurries are answered fully to be reacted with flue gas, the sulfur content after reduction desulphurization reaction in flue gas.Other cyclone 33 is horizontally disposed spiral shell The swirl vanes 44 of shape blade composition are revolved, flue gas encounters the spiralling eddy flow of swirl vanes 44 during upward impact Tangentially motion upwards, changes direction simultaneously because the effect with centrifugal force, flue gas forms spiralling dragon after blade 46 Roll up wind shape.And it is that swirl vane is arc, itself and the blade in draft fan or electric fan to compare more preferably technical scheme Shape is consistent.Further preferred technical scheme is：The flue gas flow adjusting means includes that the eddy flow can be opened and closed The flue gas regulation lid 38 of room 32 and adjust the opening and closing lid arrangement that is connected of lid 38 with the flue gas, the opening and closing lid arrangement respectively with cigarette Controlled atmosphere section lid 38 and the top of the spin chamber 32 are connected, and the opening and closing lid arrangement is connected with control system.Flue gas regulation lid 38 Effect is to cover the rear enclosed spin chamber 32, equivalent to causing the spin chamber 32 no longer to participate in desulphurization reaction, and is beaten when it is in During the opening opened, the top equivalent to the spin chamber 32 is sky, is blocked without any, and so the inward eddy of spin chamber 32 takes off Flue gas after reaction of Salmon-Saxl enters in demister 2 from the top of spin chamber 32, and the flue gas in equal device of air 4 can enter the spin chamber 32 carry out desulphurization reaction, it is ensured that flue gas can carry out desulphurization reaction.And the effect for being opened and closed lid arrangement is to be turned on or off flue gas tune Save lid 38 and then the opening and closing of fault spin chamber 32.Control system is used to control the effect of opening and closing lid arrangement to be turned on or off cigarette Controlled atmosphere section lid 38.It can also be on the basis of previous technique scheme：The opening and closing lid arrangement includes fixing with swing arm rotary shaft Swing arm and swing arm drive device, the distal end of the swing arm is fixed on flue gas regulation lid 38, the near-end of the swing arm with it is described Swing arm rotary shaft is fixed, and the swing arm rotary shaft is connected with the swing arm drive device, the swing arm drive device and the control System connection processed.Such opening and closing lid arrangement is in use, swing arm drive device driving swing arm rotary shaft is rotated forward, and swing arm is revolved Rotating shaft drives swing arm to rotate forward so that its horizontal translation, finally removes the top tip position of spin chamber 32, and then this is revolved Flow chamber 32 is opened, that is, is opened the spin chamber 32 and carried out desulphurization reaction.And when swing arm drive device driving rotary shaft is reversely rotated, Swing arm rotary shaft drives swing arm to rotate backward so that swing arm horizontal translation and then is moved to the top of spin chamber 32 and closes spin chamber 32 spaces, spin chamber 32 is closed state, that is, closes the spin chamber 32, desulfurization is no longer carried out into the flue gas in the spin chamber 32 React and flue gas can not be discharged to demister 2, the opening and closing lid arrangement of this spline structure realizes that flue gas adjusts the opening of lid 38 With closing.Technical scheme still more preferably is that the swing arm drive device is connected with electric operator 36, electronic execution Mechanism 36 is connected with control system.So, control system controls institute according to the flue gas flow and flow velocity entered in equal device of air 4 Some electric operators 36, some electric operators 36 are not run, and connected swing arm drive device is not run, swing arm Keep it turned on, i.e., the spin chamber 32, which is in opening, can carry out normal desulphurization reaction, and some electric operators 36 operations, connected swing arm drive device operation moves horizontally swing arm, and then flue gas regulation lid 38 is covered in the rotation In flow chamber 32, the spin chamber 32 is closed so that it can not participate in desulphurization reaction.And then can be according to the inlet and flue gas of flue gas Flow control carries out the quantity of spin chamber 32 of desulphurization reaction, and then ensures desulfuration efficiency and desulfurization degree.It can also be the opening and closing Lid arrangement includes the unlatching pawl 39 for being fixed on flue gas regulation lid 38 one end upper surface, flue gas regulation lid 38 other end hinge The top of spin chamber 32 is connected to, the unlatching pawl 39 is connected with electric operator 36.So, electric operator 36 starts Operation, will open pawl 39 and is flipped up, and because one end that flue gas adjusts lid 38 is articulated with the top of spin chamber 32, therefore open Pawl 39 drives the other end of flue gas regulation lid 38 to be flipped up around it with the top jointed shaft of spin chamber 32 or pin joint, and then will The top of spin chamber 32 is opened, and the spin chamber 32 can carry out desulphurization reaction.On the contrary, the inverted running of electric operator 36, will Open pawl 39 to downwardly turn over, because one end that flue gas adjusts lid 38 is articulated with the top of spin chamber 32, therefore open the band of pawl 39 Flue gas regulation jointed shaft 40 or pin joint of the other end of dynamic flue gas regulation lid 38 at the top of itself and spin chamber 32 are downwardly turned over, And then cover flue gas regulation lid 38 at the top of the spin chamber 32, the spin chamber 32 is closed, and the spin chamber 32 is without desulfurization Reaction, and flue gas regulation jointed shaft 40 is set up on the jointed shaft support member 41, so can according to the inlet of flue gas and Flue gas flow rate control carries out the quantity of the spin chamber 32 of desulphurization reaction, and then ensures desulfuration efficiency and desulfurization degree.It is electronic in addition to hold The end of row mechanism 36 is located at outside spin chamber 32, and its head end is inserted in the spin chamber 32, and position is contacted with the spin chamber 32 Install and be equipped with tower wall sealing device 42.It is not in the situation of smoke spillage when so guarantee spin chamber 32 is closed.Can be with It is that the flue gas flow adjusting means includes being arranged at the flap valve 35 at the top of spin chamber 32 and connected with the flap valve 35 The electric operator 36 connect, the size of the flap valve 35 is more than the top dimension of spin chamber 32.So flap valve 35 is Spin chamber 32 can be closed, the operation upset flap valve 35 of electric operator 36 can be turned on and off spin chamber 32.And then The quantity of the spin chamber 32 of progress desulphurization reaction can be controlled according to the inlet and flue gas flow rate of flue gas, and then ensures desulfurization effect Rate and desulfurization degree.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The top of swirl vane 46 is arc, and the top surface of swirl vanes 44 forms the high circle in middle low periphery Arc body.So, the top curve of swirl vane 46 causes flue gas when change is flowed to, it is to avoid directly impact impeller housing 43 or The inwall of spin chamber 32 and be direction of rotation swinging slip over impeller housing 43 or the inwall of spin chamber 32, avoid as far as possible impact Or directly collided with impeller housing 43 or the inwall of spin chamber 32 and consume kinetic energy in flue gas, and then it is prevented effectively from flue gas flow rate Reduction, is avoided as much as the consumption of flue gas kinetic energy, and the thickness for the suspension reaction slurries eddy flow layer that flue gas can be held up is effectively ensured As big as possible, the sulfur dioxide in flue gas is fully contacted with effective sweetening component in desulphurization reaction slurries and fully reacted, it is ensured that Both desulphurization reactions more thoroughly and as far as possible deviate from the sulfur dioxide in flue gas, effectively improve smoke desulfurization efficiency, and Smoke-shock impeller housing 43 and the inwall of spin chamber 32 are avoided, effectively the service life of extension cyclone 33 and spin chamber 32, drop Low-maintenance cost, and then reduce production cost.On the basis of previously described technical scheme, it can also be：Each rotation The top edge for flowing blade 46 is the curved edge gradually risen by the impeller axis of centres 45 to the impeller housing 43.This Sample, the curved edge gradually risen ensures that obstacle is encountered in flue gas circulation less as far as possible, and its motion is more smooth, reduces flue gas kinetic energy Consumption, and then smoke desulfurization efficiency and desulfurized effect are further improved, sulfureous in flue gas content is reduced as much as possible.Further preferably Technical scheme be located at equal intervals between the impeller axis of centres 45 and the impeller housing 43 for the swirl vane 46.This Sample, the area that flue gas hits each swirl vane 46 is more uniform so that the uniformity that flue gas centrifugal cyclone is turned to is higher, further Kinetic energy in flue gas is avoided to consume, and then the further thickness for the desulphurization reaction slurries suspension eddy flow layer that increase flue gas can be held up, And then further improve flue gas desulfurization effect and desulfuration efficiency.It can also be on the basis of previous technique scheme：The impeller The height of the axis of centres 45 is less than the height of the impeller housing 43, and the latter half of the impeller axis of centres 45 is cylinder, described The top half of the impeller axis of centres 45 be docked at the top of cone, the latter half with the top half bottom or it is integral into Shape, the latter half height is consistent with the inside height of the swirl vane 46.So, when flue gas is by swirl vane 46 It is contacted during centrifugal rotation is done in the flue gas of middle body with cone after impact, more upward to be contacted with cone Chance is fewer, then hits few, the kinetic energy loss of effective reduction flue gas.Simultaneously as the height of the impeller axis of centres 45 is more than eddy flow The inside edge height of blade 46, therefore the fixation of swirl vane 46 is more firm.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 3 to Figure 10, on the basis of previously described technical scheme It can also be：The top of spin chamber 32 is provided with upward abducent extended area 37, and the extended area 37 is located on The top of spin chamber 32, the top outer edge size of extended area 37 is more than the bottom outer edge size of extended area 37.This Sample, when the flue gas arrival top of spin chamber 32 is not reached in demister 2 also, the expansion area set due to the top of spin chamber 32 The top outer edge size in domain 37 is more than the bottom outer edge size of extended area 37, and the flue gas for carrying desulphurization reaction slurries exists Outwards spread apart to come upwards after into extended area 37, because the area of extended area 37 is bigger than the middle part of spin chamber 32 and bottom, Because of area increase, flow velocity is reduced flue gas during diffusion, and then is pushed up in the top of spin chamber 32 and with the spin chamber 32 Residence time is longer in the demister 2 of portion's connection, and in residence time, flue gas and the desulphurization reaction slurries that carry with And reacted material is fully contacted, further desulfurization and the reacting slurry carried in flue gas is facilitated to fall so that follow-up Demister 2 except fog effect more preferably, overall demisting rate is higher, be emitted into the external world flue gas in sulfur-bearing thing it is as few as possible, and And some reacting slurry drops into flue gas during demister 2, therefore demister 2 is not easy to block, effectively Extend the service life of demister 2 and spin chamber 32, reduce maintenance cost, the overall sulphur removal cost of reduction, it is to avoid pollution environment. This have the advantage that in terms of existing technologies：It is simple in construction, ensure that flue gas and desulphurization reaction slurries fully react de- Sulphur, is conducive to carrying the flue gas diffusion of reacting slurry, reduces the flow velocity of flue gas, be conducive to the interior reacting slurry for having deposit to fall Under, it is to avoid demister 2 be blocked, improve sulphur removal after flue gas demisting efficiency and except fog effect.Further preferred technical side Case is that the extended area 37 is shaped as round estrade or frustum shape.The advantage of so extended area 37 of shape is to be manufactured into Type easily, and has avoided dead angle to hinder flue gas extension etc..The reacting slurry that flue gas is carried is contacted with the wall of extended area 37, Reacting slurry is facilitated to deviate from and slide, and the shape of round estrade and cone table ensure that flue gas spreads into the top of spin chamber 32 When be that more up area is bigger, flue gas flow rate is gradually reduced, except fog effect is good, and be not easy block demister 2.Also Can be that the extended area 37 is bell shape.The advantage of bell shape is to be manufactured easily, and has been avoided dead Angle hinders the flue gas to extend.The reacting slurry that flue gas is carried is contacted with the wall of extended area 37, facilitates reacting slurry from flue gas knot Drop slides, and to ensure that flue gas enters when the top of spin chamber 32 is spread be that more up area is more to the shape of round estrade and cone table Greatly, flue gas flow rate is gradually reduced, except fog effect is good, and is not easy to block demister 2.Technology still more preferably Scheme is that angle is 120 ° -150 ° between the outer wall of extended area 37 and the outer wall of the spin chamber 32.So, flue gas diffusion effect Fruit is better, and flue gas flow rate will not be reduced to excessively low degree so that the demisting flue gas stream of follow-up demister 2 It is fast not enough to cause except fog effect is bad.The opening of extended area 37 is excessive if angle angle is less than 120 °, flue gas flow rate May reduce quickly, be unfavorable for follow-up demisting, and if angle angle is more than 150 ° extended area 37 too small openings, Flue gas flow rate reduction is not obvious, except fog effect is bad.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The demister includes removing fog chamber 11, demister 12 and demisting cleaning device 14, and the demister 12 is at least Two, the demister 12 and the equal transverse horizontal of the demisting cleaning device 14 be arranged at it is described except in fog chamber 11, it is each described Demister 12 both corresponds at least one described demisting cleaning device, and at least three are arranged with equal intervals in each demister 12 16 demisting blades 13, the longitudinal section shape of the demisting blade 13 is S-shaped.So when in use, flue gas enters demisting Room 11, the flue gas for carrying reacting slurry passes through demister 12, the bottom of S-shaped demisting blade 13 is touched first, then in flue gas Reaction encounter demisting blade 13 after be blocked, and fall along S-shaped demisting blade 13, and remove after the partial reaction slurries Flue gas run up from the gap between two panels demisting blade 13, and in flue gas running, due to demisting blade 13 Section is S-shaped, therefore flue gas along gap during rising, and still carries the flue gas of desulphurization reaction slurries and can at least contact S Shape demisting blade 13 3 times to four times, in three times to four times and more desulphurization reaction slurries in the collision process of demisting blade 13 Depart from flue gas and fall along S-shaped demisting blade 13, and then at least three to four times separating flues and desulphurization reaction slurries, increase three times To four times of desulphurization reaction slurries clearing amount, that is, increase demisting efficiency and except fog effect.And because desulphurization reaction slurries are many It is secondary to be removed, and slid along smooth S-shaped demisting blade 13, therefore the desulphurization reaction slurries removed in batches in flue gas are to S The lowermost end in gap also has certain souring between shape demisting blade 13, it is to avoid the bottom of demister 12 is blocked or internal stifled Plug, reduces wash number, saves cost, extends the working time of demister 12, and the working life of demister 12 is longer.Previously mentioned Technical scheme on the basis of can also be：The demisting blade profile shape is provided with phase negative side at back bending at curve back bending To the crotch of extension.The probability for encountering demisting blade for the flue gas for carrying desulphurization reaction slurries is so further increased, and Desulphurization reaction slurries are stopped as much as possible.Except fog effect is better.Technical approach still more preferably is each institute State demister 12 to be horizontally disposed with parallel to each other, the outer wall of the demister 12 is with described except the inwall of fog chamber 11 is fixedly connected.This The advantage that sample installs demister 12 is that demisting does not have a dead angle, and demisting process is integrally than more uniform, and flue gas discharge rate compares after demisting Uniformly, flow velocity is uniform.Further preferred technical scheme be the demisting blade 13 between at intervals of 2cm-3.5cm.If Spacing distance between demisting blade 13 is excessive, then flue gas collides demisting blade 13 after entering the demisting blade 13 of demister 12 Number of times it is fewer, except fog effect is bad, and if the spacing distance between demisting blade 13 is too small, then flue gas enters demisting Collide relatively more behind gap between the demisting blade 13 of device 12, except fog effect is fairly good, but be due to flue gas in demister 12 Resistance is bigger, and flow velocity is significantly slack-off, although, but hinder follow-up flue gas demisting so that substantial amounts of flue gas except fog effect substantially Be gathered in except in fog chamber 11, influenceing overall demisting efficiency, and due between adjacent demisting blade 13 spacing distance it is too small, Desulphurization reaction slurries depart from after flue gas aggregation on demisting blade 13 again, slid and souring reciprocation so that scouring effect Not substantially, the desulphurization reaction slurries being removed and the flue gas reciprocation moved upwards, are easier to cause to block.Can be with It is：The demisting cleaning device include be connected with demisting flush water pump 15 and demisting water tank 16 flushing water supervisor 17 and with The flushing water branch pipe 18 of the connection of flushing water supervisor 17, the flushing water supervisor 17 stretches into described except part of horizontal in fog chamber 11 Two layers of flushing water manifold assemblies above and below setting are provided between at least three layers flushing water manifold assemblies, the adjacent demister 12, The lower section of orlop demister 12 is provided with one layer of flushing water manifold assemblies, and every layer of flushing water manifold assemblies include at least three At least three washer jets 19, the every flushing are provided with the flushing water branch pipe 18, the every flushing water branch pipe 18 Solenoid electric valve 10 is provided with water branch pipe 18, the solenoid electric valve 10 is connected with controller.Demisting water tank 16 is used for Supply is except water used in cleaning demister 12 in fog chamber 11, and the effect of demisting flush water pump 15 is from demisting water tank 16 by water Inside pump out and inject in flushing water supervisor 17, flushing water is delivered to respectively by flushing water supervisor 17 by the flushing water branch pipe 18 of branch Level course, then in the presence of solenoid electric valve 10, cleaning demister 12 is faced upward or downward according to control signal.Due at least Including two demisters 12, thus for convenience rinse demister 12, and due to demister about 12 both sides have import with Outlet, at least provided with three layers when demisting cleaning device is set, that is, the several positions of the desulphurization reaction slurries separated at most Need to set, i.e., two layers of flushing water manifold assemblies is set between adjacent demister 12, set again below orlop demister 12 Put one layer of flushing water manifold assemblies, every layer of flushing water manifold assemblies include at least three flushing water branch pipes 18, and flushing water branch Flushing water is injected in the top and bottom of demister 12 by multiple washer jets 19 on pipe, to being bonded in the surface of demisting blade 13 The desulphurization reaction slurries of upper and lower side be washed flushing, it is to avoid demister 12 is blocked.And on each flushing water branch pipe 18 Solenoid electric valve 10 is provided with, and solenoid electric valve 10 is connected with controller, and each flushing water branch can be so controlled respectively Water supply on pipe 18, and be to put a powerful magnetic valve, such magnetic valve in flushing supply mains's peripheral hardware in the prior art Opening and closing time is long, and response is slow, compares water wasting, and power-consuming.And on each flushing water branch pipe 18 in the present invention Low power solenoid electric valve 10 is separately provided, the operation stroke of low power solenoid electric valve 10 is short, may be selected to carry out individually Rinse, so comparing water-saving, save expense.Further preferred technical scheme is that the washer jet 19 is solid bevel-type spray Mouth.Advantage using solid-cone (type) nozzle is that nozzle is not allow susceptible to plugging in itself, and its injection is fan-shaped spray, and injection is hit The ability of beating is stronger, and the cleaning effect of demister 12 is relatively good, and service life is long, it is to avoid blocks washer jet 19, reduces cost.Also It can be the injection direction court of washer jet 19 set on the upper strata flushing water branch pipe 18 set between the adjacent demister 12 The injection direction of washer jet 19 set on the demister 12 set upward, lower floor's flushing water branch pipe 18 is set downward The injection of the washer jet 19 set on the demister 12 put, the flushing water branch pipe 18 that the lower section of orlop demister 12 is set The demister 12 that direction is set towards its top.It thus can fully clean the upper and lower side of demister 12, it is to avoid demisting The upper and lower side of device 12 is blocked.It can also be every layer of flushing water branch pipe 18 along except the extension of the radial level of fog chamber 11 is removed with described The consistent direction of the bearing of trend of day with fog 12 is horizontal-extending.So because demister 12 is horizontally disposed, therefore every layer of flushing water branch The radially horizontal-extending nozzle act power ensured on each flushing water branch pipe 18 of pipe 18 is more uniform, and cleaning performance is more preferable.When Except fog chamber 11 and demister 12 are circular, then flushing water branch pipe 18 is radially horizontal-extending, and if except fog chamber 11 and removed The equal rectangle or square of day with fog room 12, then flushing water branch pipe 18 is horizontal-extending along the consistent direction of the bearing of trend of demister 12.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：The Multifunctional centralized liquid pool includes being provided with aerator, the collection in collecting tank body 20, collecting tank body 20 The bottom of liquid pool body 20 is connected with gypsum preparation facilities 9, and the inside of collecting tank body 20 is provided with reacting slurry, the collecting tank Body 20 is connected with the external world by serum recycle system 6, and agitator 27, the aeration dress are provided with the collecting tank body 20 Put including at least two aeration performance ends, the aeration performance end is stretched into the collecting tank body 20, the aeration performance end Inserted through the side wall of collecting tank body 20 in the collecting tank body 20, the aeration performance end is from top to bottom inserted described In reacting slurry, solarization air cap 21 at least is opened up in its bottom for hollow and described aeration performance end inside the aeration performance end, The solarization air cap 21 is located in reacting slurry.So when in use, collecting tank body 20 be able to can be done again both as slurrying pond Circulatory pool, can also be simultaneously as slurry sediment pool, and the aeration performance end of aerator is inserted in the collecting tank body 20, its by (in desulfuration reaction device, the reacting slurry is desulphurization reaction slurries, itself or referred to as desulfurization in up to lower insertion reacting slurry Slurries), and it at least opens up solarization air cap 21 in bottom, and outside air is pumped into not by solarization air cap 21 under the effect of the pressure Bubble is bulged disconnectedly, and bubble is aerated, specifically in uphill process to the reacting slurry of different height, various concentrations For：Reaction equation in aeration process is：

HSO₃ ^-+1/2O₂→HSO₄ ^-→H⁺+SO₄ ^2-

SO₃ ^2-+1/2O₂→SO₄ ^2-

Ca²⁺+SO₄ ^2-+2H₂O→CaSO₄·2H₂O

The bubble that solarization air cap 21 is bloated is aerated the oxidation for promoting reacting slurry to reacting slurry, promotes in reacting slurry Calcium sulfite is converted into calcium sulfate, and crystal of calcium sulfate turns into calcium sulphate dihydrate, i.e. desulfurated plaster, and the aerator so set exposes Gas is more efficient, and reacting slurry oxygenation efficiency is higher, and more preferably, the gypsum purity of generation is higher for desulfurized effect.Further preferred skill Art scheme is that the aerator includes being used for extracting the oxidation fan 22 of air, at least two oxidation winds and enters tower tube 23 and at least Two oxidation and aeration pipes 24, the oxidation wind enters that tower tube 23 is identical with the number of oxidation and aeration pipe 24 and position is corresponding, described Tower tube 23 and the oxidation and aeration pipe 24 are entered in aeration performance end including the oxidation wind, and the oxidation wind enters tower tube and the oxidation Blower fan 22 is connected, and the oxidation wind is entered tower tube 23 and inserted from the side wall of collecting tank body 20 in the collecting tank body 20, institute State oxidation wind and enter the bottom of tower tube 23 with being connected or integrally formed at the top of the oxidation and aeration pipe 24, the solarization air cap 21 is at least opened up In the bottom of oxidation and aeration pipe 24.The effect of oxidation fan 22 is that air is pumped into collecting tank body 20, and oxidation wind enters tower Pipe 23 is connected with oxidation and aeration pipe 24 to be used or both integrally formed, and oxidation wind is entered tower tube 23 and is connected with oxidation fan 22, side Just outside air is sucked into oxidation wind by oxidation fan 22 to enter in tower tube 23, and then enters oxidation and aeration pipe 24, then logical Cross be arranged at the solarization air cap 21 of the bottom of oxidation and aeration pipe 24 bulging bubble enter reacting slurry in so that reacting slurry is abundant Aeration, improves aeration efficiency, improves the oxygenation efficiency of reacting slurry, simultaneously because being constantly pumped into air, air is made in pressure Constantly bloated under at solarization air cap 21, therefore ensure that pressure is remained more than reacting slurry pressure at solarization air cap 21, because This solarization air cap 21 is not easy to block.Certainly the aerator of other structures is can also be, as long as aeration performance end is from top to bottom In intercalation reaction slurries, solarization air cap 21 is arranged at lowermost end.Further preferred technical scheme is the oxidation wind Machine 22 enters with each oxidation wind to be connected between tower tube 23 by oxidation wind endless tube 25, and the oxidation wind endless tube 25 is around described The side outer wall of collecting tank body 20 is set, and the head end of the oxidation wind endless tube 25 is connected with the oxidation fan 22, the oxidation One end that wind enters tower tube 23 is connected with the oxidation wind endless tube 25, and the oxidation wind enters the other end of tower tube 23 and the corresponding oxygen Change the top of aeration tube 24 to connect.I.e. one sets around whole collecting tank body 20 or around the big side outer wall of half-turn collecting tank body 20 One end connection oxidation fan 22 for the oxidation wind endless tube 25 put, the air that oxidation fan 22 is pumped into enters oxidation wind endless tube 25 Interior, then multiple oxidation winds enter the end that tower tube 23 connected by it with oxidation wind endless tube 25 and enter tower tube 23 into each oxidation wind It is interior, then by being aerated in the entrance reacting slurry of oxidation and aeration pipe 24, the advantage so set is to only need to an oxidation wind Machine 22 can convey control to the multiple oxidation winds being circumferentially positioned on the side wall of collecting tank body 20 simultaneously and enter in tower tube 23, and then Air is provided for each oxidation and aeration pipe simultaneously, expense is saved, and effectively saves space-consuming, while ensure aeration efficiency high, Reacting slurry oxygenation efficiency is high.It can also be：The vertical of oxidation and aeration pipe 24 is arranged in the collecting tank body 20, the oxygen Change aeration tube 24 to be fixed on the madial wall of collecting tank body 20 by being aerated support 26.So fixed by being aerated support 26 Oxidation and aeration pipe 24 so that the vertical of oxidation and aeration pipe 24, which is set, more to be consolidated, and is avoided rocking in aeration process and is influenceed aeration The oxygenation efficiency of efficiency and reacting slurry.It can also be that the solarization air cap is opened in institute on the basis of previously described technical scheme The bottom of oxidation and aeration pipe 24 is stated, the oxidation and aeration pipe 24 from top to bottom at least opens up a solarization air cap along its Longitudinal extending direction 21, the sectional area sum of all solarization air caps 21 is less than the cross-sectional area of oxidation and aeration pipe 24.So not only from bottom Constantly there is bubble bulging, and also constantly have bubble drum out of solarization air cap 21 that from top to bottom arrange in the solarization air cap 21 opened up Go out, because the sectional area of all solarization air caps 21 is less than the cross-sectional area of overall oxidation and aeration pipe 24, therefore be pumped into air Pressure remain unchanged more than the pressure and impulsive force of reacting slurry, bubble constantly connects during continuous rise with reacting slurry Touch, active principle in oxidation reaction slurries, and ensure that solarization air cap 21 is not plugged up, improve aeration efficiency, improve reacting slurry Oxygenation efficiency.It can also be：The angles such as all aeration performance ends are equally spaced around plugging and are placed in the collecting tank body 20 It is interior.Angle is identical between i.e. multiple aeration performance ends, such as around three aeration performance ends of setting, then two neighboring aeration Angle between function end is 120 °, if around set four aeration performance ends, then two neighboring aeration performance end end it Between angle be 90 °.And if collecting tank body 20 is square, then aeration performance end is to be equally spaced around collecting tank body 20 Set.And equidistantly or to wait angle to set the advantage at aeration performance end be that collecting tank the zone of action such as can be divided into, often Effect of the individual aeration performance end in its zone of action is as uniform as possible, i.e., multiple aeration performance ends are as far as possible by whole collecting tank Reacting slurry in body 20 is aerated as homogeneously as possible, improves aeration efficiency and the oxygenation efficiency of reacting slurry.

A kind of flue gas desulphurization system of the present invention, refer to Fig. 2 to Figure 18, on the basis of previously described technical scheme It can also be：Including collecting tank body 20, be provided with aerator in collecting tank body 20, the bottom of collecting tank body 20 with Gypsum preparation facilities 9 is connected, and the inside of collecting tank body 20 is provided with reacting slurry, and the collecting tank body 20 passes through with the external world The reacting slurry circulatory system 6 is connected, and is provided with agitator 27 in the collecting tank body 20, the agitator 27 be obliquely installed in It is parallel between the stirring end surfaces of agitator 27 and the side wall of collecting tank body 20 or have on the side wall of collecting tank body 20 Angle, the angle is acute angle or obtuse angle, and the stirring end of the agitator 27 is located in the reacting slurry, the aerator The aeration performance end be located at the agitator 27 stirring end front.I.e. agitator 27 is inclined at collecting tank body On 20 side walls, and the stirring end of agitator 27 is not vertical with the side wall of collecting tank body 20, i.e. the stirring end of agitator 27 will not Horizontal cross is set as prior art, and it is that horizontal cross stirs reacting slurry that end active force is stirred in the prior art.And this Agitator 27 is that inclination certain angle or vertical are arranged in reacting slurry in application, and the front at stirring end sets aeration The aeration performance end of device, after such reacting slurry is sufficiently stirred for, what closest aeration performance end was got up to stirring turnup Reacting slurry is aerated so that aeration is abundant as far as possible, and the oxygenation efficiency of reacting slurry is as high as possible.It is obliquely installed in collecting tank sheet Parallel or have angle between the stirring end of agitator on body sidewall and collecting tank this body sidewall, angle is acute angle or obtuse angle, i.e., The postrun stirring plane in stirring end is parallel with collecting tank this body sidewall or has angle, by collecting tank sheet when so stirring end is stirred The reacting slurry of internal different height position is stirred and fully stirred in company with the effect at the aeration performance end of aerator Mix and be fully aerated, the reacting slurry of the intrinsic different height of collecting tank and various concentrations is stirred and mixed, it is convenient Aerator is fully aerated, and ensure following cycle reacting slurry be sweetening component even concentration reacting slurry, it is ensured that The desulfurized effect and desulfuration efficiency of bulk devulcanization device, it is to avoid pollution environment.Further preferred technical scheme is the stirring Device 27 includes rotating driving device 28, stirring rotary shaft 29 and is installed on the stirring vane 30 of stirring rotary shaft 29 end, The aeration performance end is located at the front of stirring vane 30, and the drive device is connected with the stirring rotary shaft 29.Rotation Drive device 28 can be aeration motor, and it drives the stirring rotary shaft 29 that is attached thereto to rotate, and then drive and installed in stirring The stirring vane 30 for mixing the end of rotary shaft 29 is rotated together with, and the agitation of stirring vane 30 overturns the reacting slurry near it, facilitates position The aeration performance end of aerator in front of it is aerated to reacting slurry, is aerated more abundant.Still more preferably Technical scheme is the front that the aeration performance end is located at one of blade in the stirring vane 30.Such stirring vane The air as much as possible that reacting slurry is overturn at stirring to aeration performance end and sprayed with solarization air cap 21 when 30 stirring Oxidation reaction occurs for bubble contact.More preferably, reacting slurry oxygenation efficiency is higher for aeration effect.

A kind of method that flue gas desulfurization is carried out using it of the present invention, refer to Fig. 2 to Figure 18, in previously described technology Can be specifically on the basis of scheme：Comprise the following steps：

A. need the flue gas of desulfurization to be transported to flue gases duct 7 by blower unit 51, pushed to afterwards by follow-up flue gas Equal device of air 4, when close to equal device of air 4, storage apparatus for ash 50 is done to the delivery of dry powder desulfurizing agent of dry powder desulfurizing agent injection apparatus 8 Powder desulfurizing agent injection apparatus 8 to flue gases duct 7 spray into dry powder desulfurizing agent, dry powder desulfurizing agent towards the equal direction of device of air 4 spray to In flue gases duct, dry powder desulfurizing agent carries out pre- desulfurization with flue gas hybrid reaction；

B. the flue gas for having carried out the pre- desulfurization of step A enters in equal device of air 4, and full of equal device of air 4, afterwards into eddy flow Each spin chamber 32 of reaction unit 3, after the Cyclonic reactor 33 in spin chamber 32, changes its direction of motion for cyclone As swirling motion；

C. the reacting slurry in Multifunctional centralized liquid pool 5 is extracted and is delivered on cyclone reaction device 3 by serum recycle system 6 Portion, enters in spin chamber 32, the flue gas of the swirling motion of reacting slurry and high speed meets, and both are mutual from each top of spin chamber 32 Act on and form suspension eddy flow layer, flue gas and reaction slurry in the top of Cyclonic reactor 33 in the presence of the upward impulsive force of flue gas Liquid is fully contacted, mixes and reacted in suspension eddy flow layer, that is, carries out cyclone desulfuration reaction, when reacting slurry is constantly fallen, is hanged When floating eddy flow thickness spends big, partial reaction slurries are dropped through after Cyclonic reactor 33 by equal device of air from suspension eddy flow layer 4 fall into wait in Multifunctional centralized liquid pool 5 is carried out desulphurization reaction after the extraction of serum recycle system with flue gas again；

Flue gas in D.C steps after progress cyclone desulfuration reaction, which continues to ascend into demister 2, to be carried out at demisting Reason, the reacting slurry that flue gas is carried is removed；

Flue gas after the processing of E.D steps demisting is emitted into ambient atmosphere by exhaust apparatus 1；

F. when deposit is more in Multifunctional centralized liquid pool 5, the bottom of Multifunctional centralized liquid pool 5 is extracted using gypsum preparation facilities 9 The reacting slurry containing more deposit, prepare desulfurated plaster and export, at the same filtering after reacting slurry by revolution convey Desulphurization reaction is carried out after to the multi-functional interior circulation of collecting tank 5.

A kind of method that flue gas desulfurization is carried out using it of the present invention, because air inducing is filled including above-mentioned steps, therefore therefore The flue gas of flue gas push above will be conveyed to equal device of air 4 in flue gas introducing flue gases duct 7 and constantly to flue gases duct 7 by putting 51 In, the convenient desulphurization reaction subsequently carried out, when the flue gas for needing desulfurization process will enter equal device of air 4, with storage apparatus for ash Delivery of dry powder desulfurizing agent sprays to dry powder desulfurizing agent injection apparatus 8 from dry powder desulfurizing agent injection apparatus 8 into flue gases duct 7 in 50 Enter the dry powder desulfurizing agent such as quick lime, dry powder desulfurizing agent mixes progress first time desulfurization with the flue gas in flue gases duct 7, i.e., pre- de- Sulphur, flue gas after pre- desulfurization carries after part dry powder desulfurizing agent enters equal device of air 4 and enters back into cyclone reaction device 3, it is laggard Enter demister 2, the reacting slurry that the flue gas after desulfurization risen in demister 2 is gradually repeatedly removed in flue gas is to be removed Mist, due to dry powder desulfurizing agent pre-desulfurization, then carries out slurries cyclone desulfuration, desulfuration efficiency is higher again, and the pre- desulfurization of dry powder Rear portion dry powder desulfurizing agent is carried along into equal device of air 4 by flue gas, later falls into Multifunctional centralized liquid pool 5, and shape is reacted with water Into desulphurization reaction slurries, that is, pulping process is completed, when the sediment in Multifunctional centralized liquid pool 5 is excessive, in desulphurization reaction slurries Desulfurizing agent composition it is not enough when, sediment can be delivered to gypsum preparation facilities 9 from Multifunctional centralized liquid pool 5 and prepare desulfurization stone Cream, and the dry powder desulfurizing agent sprayed into is combined to form with the good new reacting slurry of desulfurizer activity with the water in reacting slurry, Rinse water or the water and the dry powder desulfurizing agent formation desulphurization reaction slurries of whereabouts that fill into carry out slurrying so that in desulphurization reaction slurries Effective sweetening component concentration improve.When desulfurizing agent excessive concentration, demister 2 can be cleaned so that rinse water is carried Reacting slurry falls to multi-functional collecting tank 5 after entering cyclone reaction device 3, can also add water separately through water replanishing device, With the high desulphurization reaction slurries of desulfurization active ingredient concentration in rinse water or the water filled into so that effective in desulphurization reaction slurries The concentration reduction of sweetening component.Entered with the flue gas that certain flow rate is run after cyclone 33, hit with swirl vane 46, due to Flue gas changes eddy flow flue gas as flow direction is changed into cyclone by the swirl vanes 43 of cyclone 33 first, and flue gas and desulfurization are anti- Slurries are answered to stop and fully contact in the suspension eddy flow layer of the top of cyclone 33 formation, compared to existing spray desulfurizer Speech, desulphurization reaction slurries are fully contacted with flue gas so that reaction efficiency is greatly improved, and desulfurized effect and disengaging efficiency are at least sprays 2-3 times of desulfurizer desulfurization is drenched, desulfurization is more thorough, and sulfur content is very little in flue gas after desulfurization, accomplishes substantially to environment It is harmless.And due to add the pre- desulfurization of dry powder desulfurizing agent, dry powder desulfurizing agent enter cyclone 33, into the grade of demister 2 in The water of reacting slurry is combined, or is eventually entered into Multifunctional centralized liquid pool 5 and formed new reacting slurry with water, therefore no longer needs slurrying Pond and sedimentation basin, a Multifunctional centralized liquid pool 5 can realize slurrying, loop slurry and sediment slurry.Space is saved, simultaneously Cost is saved, slurries energy-conserving and environment-protective can be recycled, desulfurized effect is more preferable.Gypsum preparation facilities 9 is more by deposit Reacting slurry prepares desulfurated plaster after extracting, while the reacting slurry for removing deposit turns round be delivered to Multifunctional centralized liquid pool 5 again It is interior to carry out follow-up desulphurization reaction.This have the advantage that in terms of existing technologies：It is simple in construction, carry out flue gas desulfurization before First in flue gases duct 7 in advance carry out once pre- desulfurization, and afterwards carry out cyclone desulfuration reaction, improve flue gas desulfurization effect and Desulfurization degree, saves space-consuming, it is no longer necessary to slurrying pond and slurry sediment pool, facilitates later maintenance, maintenance cost is low, and effectively saves The energy and avoid pollute environment.

It is above-mentioned that only several specific embodiments in the present invention are illustrated, but protection model of the invention can not be used as Enclose, the equivalent change or modification or equal proportion made by every design spirit according in the present invention are zoomed in or out, all should Think to fall into protection scope of the present invention.

Claims (9)

1. a kind of flue gas desulphurization system, it is characterised in that：Including fume desulfurizing tower, storage apparatus for ash, gypsum preparation facilities and air inducing Device, the storage apparatus for ash, blower unit and gypsum preparation facilities are connected with fume desulfurizing tower, and the fume desulfurizing tower includes Tower body and the fume extractor from top to bottom set along the tower body, demister, cyclone reaction device, equal device of air and multi-functional Collecting tank, by anti-for reacting slurry to be pumped into the eddy flow between the Multifunctional centralized liquid pool and the cyclone reaction device Answer and be connected at the top of the serum recycle system connectivity on device top, the demister with the fume extractor, the cyclone reaction The top of device is connected with the bottom of the demister, and the cyclone reaction bottom of device at the top of the equal device of air with connecting Logical, the equal device of air is connected with flue gases duct, and the flue gases duct offers dry powder entrance, institute at the equal device of air State dry powder entrance to be connected with the dry powder desulfurizing agent injection apparatus for spraying dry powder to the dry powder entrance, the dry powder desulfurizing agent Injection apparatus front end, towards in the equal device of air and consistent with the flue gas inflow direction, is many immediately below the equal device of air Function collecting tank, the cyclone reaction device includes eddy flow shell body and horizontally arranged is arranged in the eddy flow shell body extremely At least one cyclone is horizontally disposed with Shao Liangge spin chambers, the spin chamber, the spin chamber top is provided with circular response Connected below injection point, the spin chamber with equal device of air, the cyclone includes horizontally disposed swirl vanes, the rotation Stream impeller includes being arranged at the impeller housing of periphery, the impeller axis of centres for being arranged at center and at least five spiralling rotations Blade is flowed, the swirl vane is set around the impeller axis of centres, and the impeller housing is fixed in the spin chamber, described The inside edge of swirl vane is fixed with the impeller axis of centres, and the outer ledge of the swirl vane is consolidated with the impeller housing Fixed, the blower unit is connected with the flue gases duct, and the storage apparatus for ash is connected with the dry powder desulfurizing agent injection apparatus, institute State gypsum preparation facilities to connect with the Multifunctional centralized liquid pool bottom, the demister includes removing fog chamber, demister and demisting Cleaning device, the demister at least two, the demister and the equal transverse horizontal of demisting cleaning device are arranged at institute State in demisting room, each demister both corresponds at least one described demisting washer, between being waited in each demister Every being arranged with least 36 demisting blades, longitudinal interface shape of the demisting blade is S-shaped, at least one described eddy flow Ceiling portion is provided with the flue gas flow adjusting means at the top of the spin chamber able to turn on or off, the flue gas flow adjusting means with it is described Connect at the top of spin chamber, the flue gas flow adjusting means include opening and closing the flue gas regulation lid of the spin chamber and with The opening and closing lid arrangement of the flue gas regulation lid connection, the opening and closing lid arrangement is adjusted at the top of lid and the spin chamber with flue gas respectively Connection, the opening and closing lid arrangement is connected with control system.

2. a kind of flue gas desulphurization system according to claim 1, it is characterised in that：The dry powder desulfurizing agent injection apparatus bag Include the dry powder desulfurizing agent playpipe being connected with charge gun and be arranged at the ejecting gun that the dry powder desulfurizing agent sprays tube end, institute State ejecting gun and fixation is connected with the dry powder desulfurizing agent playpipe, the front portion of the ejecting gun passes through the dry powder entrance, described Ejecting gun front portion is stretched into the flue gases duct, and the storage apparatus for ash is ash-storing bin, and the ash-storing bin is connected with the charge gun.

3. a kind of flue gas desulphurization system according to claim 1, it is characterised in that：The gypsum preparation facilities includes gypsum Excavationg pump, plaster serum rotational flow device and vacuum band-type filter machine, the gypsum excavationg pump connect with the Multifunctional centralized liquid pool bottom Logical, the plaster serum rotational flow device is connected with the gypsum excavationg pump, and the plaster serum rotational flow device is exported and institute provided with gypsum Reacting slurry outlet is stated, the plaster serum rotational flow device gypsum outlet is connected with the vacuum band-type filter machine, shown calcium plaster The outlet of liquid swirler reacting slurry is connected with the Multifunctional centralized liquid pool top.

4. a kind of flue gas desulphurization system according to claim 1 or 2 or 3, it is characterised in that：Draw based on the blower unit Blower fan.

5. a kind of flue gas desulphurization system according to claim 1 or 2 or 3, it is characterised in that：The spin chamber is at least two It is individual, the flue gas flow adjusting means at the top of the spin chamber able to turn on or off, the cigarette are provided with the top of at least one described spin chamber Air-flow quantity regulating device at the top of the spin chamber with being connected.

6. a kind of flue gas desulphurization system according to claim 1 or 2 or 3, it is characterised in that：At the top of the swirl vane For arc, the swirl vanes top surface forms the high circular arc in middle low periphery.

7. a kind of flue gas desulphurization system according to claim 1 or 2 or 3, it is characterised in that：The spin chamber top is set There is upward abducent extended area, the extended area is located on spin chamber top, the extended area top outer edge Size is more than the extended area bottom outer edge size, the extended area from top to bottom even transition.

8. a kind of flue gas desulphurization system according to claim 1 or 2 or 3, it is characterised in that：The Multifunctional centralized liquid pool bag Include and aerator be provided with collecting tank body, collecting tank body, the collecting tank body bottom portion is connected with gypsum preparation facilities, The collecting tank body interior has reseted reacting slurry, and the collecting tank body is connected with the external world by the reacting slurry circulatory system It is logical, agitator is provided with the collecting tank body, the aerator includes at least two aeration performance ends, the aeration work( Energy end is stretched into the collecting tank body, and the collecting tank sheet is inserted in the aeration performance end through described this body sidewall of collecting tank In vivo, the aeration performance end is from top to bottom inserted in the reacting slurry, to be hollow and described inside the aeration performance end Aeration performance end at least opens up solarization air cap in its bottom, and the solarization air cap is located in reacting slurry.

9. the method for flue gas desulfurization is carried out using the flue gas desulphurization system described in claim 1 or 2 or 3, it is characterised in that：Including Following steps：

A. need the flue gas of desulfurization to be transported to flue gases duct by blower unit, gas dress is pushed to by follow-up flue gas afterwards Put, when close to equal device of air, storage apparatus for ash sprays to dry powder desulfurizing agent injection apparatus delivery of dry powder desulfurizing agent, dry powder desulfurizing agent Device sprays into dry powder desulfurizing agent to flue gases duct, and dry powder desulfurizing agent is sprayed to flue gases duct towards equal device of air direction, dry powder Desulfurizing agent carries out pre- desulfurization with flue gas hybrid reaction；

B. the flue gas for having carried out the pre- desulfurization of step A enters in equal device of air, and full of equal device of air, cyclone reaction is entered afterwards and is filled Each spin chamber put, after the Cyclonic reactor in spin chamber, changes its direction of motion for swirling motion as cyclone；

C. the reacting slurry in Multifunctional centralized liquid pool is extracted and is delivered to cyclone reaction device top by serum recycle system, from each Spin chamber top enters in spin chamber, and the flue gas of the swirling motion of reacting slurry and high speed meets, and both interact and in cigarette Suspension eddy flow layer is formed in the presence of the upward impulsive force of gas in the top of Cyclonic reactor, flue gas and reacting slurry are in suspension eddy flow Fully contact, mix and react in layer, that is, carry out cyclone desulfuration reaction, when reacting slurry is constantly fallen, suspend rotation flow layer thickness When excessive, partial reaction slurries drop through after Cyclonic reactor from suspension eddy flow layer and fall into multi-functional liquid collecting by equal device of air Waited in pond and carried out desulphurization reaction with flue gas after the extraction of serum recycle system again；

Flue gas in D.C steps after progress cyclone desulfuration reaction continues to ascend into progress demisting processing in demister, will The reacting slurry that flue gas is carried is removed；

Flue gas after the processing of E.D steps demisting is emitted into ambient atmosphere by exhaust apparatus；

F. when deposit is more in Multifunctional centralized liquid pool, using gypsum preparation facilities extract Multifunctional centralized liquid pool bottom contain compared with The reacting slurry of many deposits, prepares desulfurated plaster and exports, at the same filtering after reacting slurry turned round be delivered to it is multi-functional Desulphurization reaction is carried out after collecting tank interior circulation.