CN1228130C

CN1228130C - Apparatus for washing acidic materials in flue gas

Info

Publication number: CN1228130C
Application number: CN 02156874
Authority: CN
Inventors: 钟金龙
Original assignee: China Steel Corp
Current assignee: China Steel Corp
Priority date: 2002-12-19
Filing date: 2002-12-19
Publication date: 2005-11-23
Anticipated expiration: 2022-12-19
Also published as: CN1507937A

Abstract

The present invention relates to elimination equipment of acidic substances in flue gas. The present invention aims to provide processing equipment of a combustion device, which has the advantages of cleanness, regeneration, moistening, one-time temperature drop, increase of scrubbing benefit, improvement of scrubbing effect and pollution reduction. The elimination equipment comprises a feeding structure, a scrubbing structure, a screening and washing structure, a water spray structure and a recovery structure, wherein the feeding structure comprises a feeding source and a feeder, the scrubbing structure comprises a plurality of definition air inlet channels and air outlet channels arranged in an adjacent mode, and the scrubbing structure is provided with a reaction tower of a scrubbing particle inlet and a scrubbing particle outlet. The reaction tower is formed by the definition of a plurality of blade groups of storage channels, which are arranged at intervals; the blade groups of storage channels are used for defining the air outlet channels, and are communicated with and positioned on both sides of each air outlet channel to be used for filling scrubbing particles; and the storage channels and the air outlet channels are respectively communicated with the scrubbing particle inlet and the scrubbing particle outlet. The screening and washing structure comprises a collecting piece, a plurality of main sieves, a vibrator and a recovery device, wherein the main sieves are aslant arranged in the collecting piece; the water spray structure comprises a plurality of aspersories and a plurality of water sprayers; and the recovery structure is provided with a recoverer communicated with the recovery piece and the feeder.

Description

The equipment of washing away of flue gas middle acid substance

Technical field

The invention belongs to the burner treatment facility, particularly a kind of equipment of washing away of flue gas middle acid substance.

Background technology

The equipment of washing away of the flue gas middle acid substance of commonly using has multiple pattern.

A kind ofly wash away acidic materials in the flue gas for the lime stone particle bed of humidity that utilizes fixed or thermopnore formula.

In general, moist lime stone with flue gas in acidic materials, as formed product behind the sulfur oxide reaction, can form membranoid substance in the surface of lime stone as calcium sulfate or calcium sulfite.And capture-effect all can take place in this membranoid substance, makes lime stone need to such an extent that could utilize after the demoulding regeneration again.

The equipment of washing away 1 of the fixed-bed type flue gas middle acid substance of commonly using as shown in Figure 1, is valve-off 111,112,113,115 when using; Open valve 114, water jet 12 can be sprayed into water liquid in the reactor 13, and wetting lime stone particle 131; Open valve 111,113 then, order is entered in the reactor 13 via flue gas manifold 161 and valve 111 by the flue gas of air-introduced machine 14 after precipitator 15 sucking-offs pressurization; Behind lime stone 131 scrubbing of flue gas in reactor 13, see through sieve plate 17, be discharged to atmosphere by valve 113 and flue gas manifold 162 to chimney 16, this process can be reacted the sulfur dioxide in the flue gas or sulfur sesquioxide and wet lime stone 131, make lime stone 131 surface generate calcium sulfate or calcium sulfite membranoid substances, and then sulfur dioxide or the sulfur sesquioxide washing away in the flue gas to be contained.When reactor 13 uses a period of times and need clean or when adding lime stone 131 first valve-off 111,113; Flue gas stream is to other reactors of washing away equipment; And then with valve 115,112 breakdowns, and the air-introduced machine 181 of startup bag collector 18 and contrary wind machine 182, open vibrator 19 more simultaneously, and make calcium sulfate or calcium sulfite membranoid substance can break away from the surface of lime stone 131; Break away from the calcium sulfate on lime stone 131 surfaces or calcium sulfite membranoid substance this moment and can be sucked up to bag collector 18 through valve 115 and collect, cleaning after finishing is valve-off 115,112, open again afterwards valve 116 replenish lime stones 131 '.So, reactor 13 just can be exercised usefulness again.In real-world operation, many bank of reactor 13 one after the others runnings need be arranged, and scrubbing running continuously.

The equipment of washing away 1 of above-mentioned known fixed-bed type is because lime stone 131 amounts on its sieve plate 17 can not be too thick, so as not to ventilate and demoulding efficient bad, so, the time that reactor can use and the benefit of scrubbing then can be affected.

Therefore, the equipment of washing away 2 of thermopnore formula flue gas middle acid substance is as shown in Figure 2 disclosed on the market, the lime stone particle 21 that wherein reacts usefulness is to be extracted out by the bottom of conveyer autoreactor 20, return reactor 20 tops through regenerating unit, flue gas is then entered by the multiple blade 24 air inlet grooves 241 that constitute arranged side by side by the waste gas inlet manifold, flow through again afterwards lime stone particle 21 in the reactor 20, the flue gas of removing behind the acid material then can be delivered to the external world by flue gas outlet.In addition, enter flue gas in the air inlet groove 241 by the waste gas inlet, the lime stone particle of part can be entrained with by in the multiple blade 25 conjoint outlet grooves 251 that constitute arranged side by side, simultaneously, the set feeder 252 in mat bottom again, make the lime stone particle 21 heavy fall in the feeder 252, be recovered to again in the circulatory system of reactor 20 scrubbing particles 21 than flue gas.

The equipment of washing away 2 of this thermopnore formula flue gas middle acid substance still has weak point when using, lime stone particle 21 in the reactor be by by gravity toward lower slider, in process of flowing, because of still having calcium sulfate or calcium sulfite membranoid substance and a large amount of limestone powders, the friction collision produces, membranoid substance and limestone powder enter the flue gas conjoint outlet groove 251 of reaction bed 20 along with flue gas, part is discharged to chimney than the limestone powder and the membranoid substance of granule with flue gas, making flue gas include particulate contaminant increases, and light tight rate rises.In addition, the part larger particles then drops to the feeder 252 of conjoint outlet groove 251 bottoms, and part membranoid substance and limestone powder cause the phenomenon of blind envelope to take place because of the humidity knot amasss on the multiple blade 25 of conjoint outlet groove 251.In the early stage, the flue gas differential pressure of the reactor 20 of flowing through is raise, superficial gas velocity rises rapidly to the end, and make oarse-grained lime stone particle 21 also be entrained with multiple blade 25, when by the lime stone particle 21 taken out of and membranoid substance amount during greater than the yield of its caisson, lime stone particle 21 and membranoid substance begin to suck in the air-introduced machine with flue gas, are discharged by chimney again, cause chimney particulate contaminant amount to increase.

Disappearance based on the equipment of washing away of aforementioned flue gas middle acid substance, though there is the large-sized lime stone particle of the replacing of trial to reduce the problem of taking out of in addition, but but fail to solve reactor flue gas outlet blade 25 by the problem of the blind envelope of powder agglomates, and react with bulky grain lime stone particle and flue gas, it removes on the ability of sulfide not as effective than granule, and less after all particle has higher surface area; Simultaneously, the speed that the lime stone particle flows downward in reactor, if when being not enough to arrive the bottom rapidly with the powder that produces, powder will be forever along with flue gas is discharged chimney and caused the secondary public hazards.

In addition, no matter be the equipment of washing away of fixed-bed type or thermopnore formula, when the lime stone particle enter reaction tower after, the phenomenon that the lime stone particle can become to build bridge at aforesaid reaction bed place, causing the flue gas path is obstructed, so, the flow velocity of flue gas is increased, cause the amount of carrying secretly of lime stone particle to increase; In addition, utilize water liquid directly to clean the lime stone particle because of both are all non-again, and the membranoid substance of dispeling the limestone particle sub-surface.Therefore, the lime stone particle that becomes the bridge formation state then can't separate, and causes the problem that the lime stone particle of thermopnore carries secretly and can't solve.

Therefore in the skill of the equipment of washing away of flue gas middle acid substance, exist demand for a long time, the equipment of washing away of aforementioned fixation bed formula, thermopnore formula just, the problem that all can't get rid of existence simultaneously, and solution is proposed and the high sulfide of not sacrificing the thermopnore formula is washed away efficient and fixed bed and do not had the problem that lime stone particle and powder are taken out of.

Summary of the invention

The purpose of this invention is to provide a kind of cleaning, regeneration, wetting, the scrubbing benefit is once finished, is improved in cooling, promote the scrubbing effect, reduce the equipment of washing away of the flue gas middle acid substance that pollutes.

The present invention includes the feeding structure, be located at feeding structure below the scrubbing structure, be located at sieving and washing structure, water liquid can be delivered to the scrubbing structure, sieve and wash water spraying structure and recovery structure in the structure of scrubbing structure below; The feeding structure comprises that storage can wash away the feed source of flue gas middle acid substance scrubbing particle and carry the feed appliance of scrubbing particle; The scrubbing structure comprises that several adjacent settings define air intake duct and can accept and load the scrubbing particle of being carried by feeder and have the reaction tower that the scrubbing particle is gone into, exported; Reaction tower system is spaced and defines gas off-take and connection by several and be positioned at the gas off-take both sides and defines for the vane group in the storing road of scrubbing particle filling and form, the two ends system of each vane group blade oppositely bends a predetermined angular respectively, and when vane group was arranged between the supporting clapboard, the vertical direction at each blade two ends and horizontal plane system were 75 ° angle; The storing road is communicated with the scrubbing particle entry, gas off-take is communicated with the outlet of scrubbing particle; Sieving and washing structure comprises collecting means, a plurality of corresponding each reaction tower that is arranged at the reaction tower below and is obliquely installed the main screen in collecting means, the corresponding recovery part of being located at the vibrator on each main screen and being located at each main screen ora terminalis respectively respectively; Water spraying structure comprises a plurality of water sprinkler and a plurality of water jets that are arranged at each main screen top respectively that are arranged at reaction tower respectively; Recovery structure has and reclaims part and be communicated with and can carry scrubbing particle after sieving to the recover of feeder.

Wherein:

Scrubbing structure plural number reaction tower is provided with the housing of tool for its ccontaining accommodation space outward; Housing has corresponding front and back walls and top, diapire, and offers the flue gas import and export on front and back walls respectively, pushes up, then runs through setting for reaction tower on the diapire; The scrubbing particle entry of each reaction tower is connected with feeder; Be placed in and define the air intake duct that enters for flue gas between each reaction tower in the housing.

Each reaction tower top of scrubbing structure is provided with first material guiding parts with the first guide space that is connected with the scrubbing particle entry of corresponding reaction tower; Offer the feeding mouth that is connected with the feeder of feeding structure and is provided with inlet valve on each first material guiding parts; Housing is provided with several guides that are arranged in first material guiding parts and are positioned at the scrubbing particle entry top of corresponding reaction tower and determines; The water sprinkler of water spraying structure is to run through to be arranged on first material guiding parts.

Be provided with two material baffles that are positioned at the feeding mouth exit in each first material guiding parts of scrubbing structure, and material baffle system can be divided into the first guide space region blanking space and watering space.

The feed source system of feeding structure is connected with the recover of recovery structure; Be connected with between recover and feeder and use the vertical feed appliance that scrubbing particle in the recover is delivered to feeder; Feeding structure feed source is communicated with feed appliance and therebetween is provided with flash spare; Sieve and wash the structure collecting means and be connected with discharging structure with outsifting discharger in the conveying collecting means.

The scrubbing structure has several second material guiding parts of being located at housing bottom respectively and having the second guide space; The second guide space system of each second material guiding parts is communicated with the scrubbing particle outlet of corresponding reaction tower; Second material guiding parts includes two first and second guide plate, two correspondences corresponding to reaction tower bottom and nearly scrubbing particle outlet both sides and is arranged at the reaction tower bottom and is positioned at ending the gas plate and be arranged at two and ending the block at place, gas plate below of place, gas off-take below; Each block in second material guiding parts and two ends between the gas plate can define the material dropping channel that is connected with the reaction tower gas off-take, and first and second guide plate and two only then defines the two only air flues that are connected with air intake duct respectively between the gas plate.

The scrubbing structure has several and is arranged at guide block on the reaction tower air intake duct bottom respectively.

Sieve and wash the first guide plate end that structure main screen system is arranged at corresponding second material guiding parts; Be provided with opposite and be provided with the secondary screen of vibrator in the second stock guide end of second material guiding parts with the main screen incline direction; The other end of secondary screen then is provided with the outsifting baffle plate parallel with the main screen incline direction; Water spraying structure is provided with the water jet that is positioned at the secondary screen top.

Reaction tower has two first plate body, second plate body and a plurality of supporting clapboards of being located at relatively in the housing of being located at side by side between first and second plate body; Supporting clapboard correspond to offer several on the storing road in the reaction tower can be for the scrubbing particle mutual discharge orifice of stream mutually; Supporting clapboard corresponds on the gas off-take in the reaction tower 53 and offers the steam vent that several are connected; Second plate body is provided with the flue gas outlet valve that can be communicated with in good time/seal gas off-take; Be positioned at both sides, reaction tower storing road vane group in most vane group and have the blade that plural number is corresponding inclination mutually; And be positioned at the blade in the outside, reaction tower storing road and the blade of reaction tower gas off-take two examples and also become corresponding inclination.

The collecting means of sieving and washing structure is provided with filter structure outward; It comprises and is arranged at the outer recovery tank of the collecting means of sieving and washing structure, is arranged at the water filter that reclaims the tank top, is opened in spout hole on the collecting means of sieving and washing structure, is arranged at the outer overflow guide plate of spout hole and can will reclaims the water-delivery pump that water liquid in the tank be delivered to watering; Water filter comprises that two correspondences are arranged at first axostylus axostyle, second axostylus axostyle on the wall that reclaims tank, are wound in the filter cloth on first axostylus axostyle and can drive the motor of second spindle rotation; The one end system of the filter cloth on first axostylus axostyle is fixedly set on second axostylus axostyle, makes the filter cloth of being located at first and second axostylus axostyle just can cross the top of reclaiming tank; The end system of overflow guide plate is positioned at the filter cloth top.

Owing to the present invention includes feeding structure, scrubbing structure, sieve and wash structure, water spraying structure and recovery structure; The feeding structure comprises feed source and feed appliance; The scrubbing structure comprises that several adjacent settings define air intake duct and have the reaction tower that the scrubbing particle is gone into, exported; Reaction tower system is spaced and defines gas off-take and connection by several and be positioned at the gas off-take both sides and defines for the vane group in the storing road of scrubbing particle filling and form, the two ends system of each vane group blade oppositely bends a predetermined angular respectively, and when vane group was arranged between the supporting clapboard, the vertical direction at each blade two ends and horizontal plane system were 75 ° angle; The storing road is communicated with the scrubbing particle entry, gas off-take is communicated with the outlet of scrubbing particle; Sieving and washing structure comprises and establishes collecting means, a plurality ofly is obliquely installed main screen in collecting means, is located at the vibrator on each main screen and is located at the recovery part of each main screen ora terminalis respectively; Water spraying structure comprises a plurality of water sprinklers and a plurality of water jet; Recovery structure has and reclaims part and be communicated with and can carry scrubbing particle after sieving to the recover of feeder.When the present invention operates, start the feeder of recovery structure recover and feeding structure at first simultaneously, make when being recovered device and being delivered to the feeder of feeding structure by the wet scrubbing particle that has a feed source, feeder can enter the scrubbing particle in the storing road of reaction tower through the scrubbing particle entry, makes the scrubbing particle to be piled up in gradually in the storing road; After the scrubbing particle filling in each reaction tower finished, each reaction tower of control scrubbing structure entered in the air intake duct that each adjacent reaction tower defined flue gas, and is entered in the storing road of reaction tower by the vane group of reaction tower; This moment, in the storing road wetted scrubbing particle can with the acidic materials in the flue gas, as sulfur dioxide, sulfur sesquioxide reaction, and form membranaceous product in the surface; Flue gas behind scrubbing then can flow in the gas off-take, and last flue gas is circulated to the external world through each reaction tower again; Because the system of the scrubbing particle in the reaction tower storing road is the state that leaves standstill, therefore, the particulate contaminant that the scrubbing particle is contained in more can filtering flue gas; After the present invention uses a period of time, in the time of must cleaning and remove on the scrubbing particle formed membranoid substance, operating personnel then can clean scrubbing particle that reaction tower is interior in each reaction tower in advance, need to turn-off flue gas earlier, to sieve and wash being arranged in the collecting means of structure again, and open the water jet and the water sprinkler of water spraying structure, begin to wash the scrubbing particle in the storing road, restart afterwards when sieving and washing the vibration of structural vibrations device drive main screen, make the scrubbing particle that is statically placed in the reaction tower storing road flow out by main screen, simultaneously, when the scrubbing particle moves down gradually, the current that caused by the friction of itself and other scrubbing particle and the continuous spray water liquid of water sprinkler, the membranaceous product of scrubbing particle surface is separated fast with the scrubbing particle, and apace membranaceous product is taken to reaction tower bottom by current, simultaneously again by the continuous water spray of the scrubbing particle on main screen of the water jet on the main screen, at this moment, with the membranaceous product of scrubbing separate particles then through the sieving of main screen, make membranaceous product to fall in the collecting means to be delivered to the external world with water liquid by main screen.The scrubbing particle of having dispeled membranaceous product on the main screen then can fall to along main screen and reclaim in the part, and by the recover general is wetting fully, cleaning finishes and the scrubbing particle of low temperature is delivered in the feeder, for recycling.Not only clean, regeneration, wetting, cooling once finishes, and improve the scrubbing benefit, promote the scrubbing effect, reduce and pollute, thereby reach purpose of the present invention.

Description of drawings

Fig. 1, wash away the device structure schematic diagram for the fixed-bed type flue gas middle acid substance commonly used.

Fig. 2, wash away the device structure schematic diagram for the thermopnore formula flue gas middle acid substance commonly used.

Fig. 3, for structural representation stereogram of the present invention.

Fig. 4, for structural representation cutaway view of the present invention.

Fig. 5, for reaction tower decomposition texture schematic isometric of the present invention.

Fig. 6, for reaction tower part-structure schematic isometric of the present invention.

Fig. 7, for reaction tower structural representation stereogram of the present invention.

Fig. 8, be A-A cutaway view among Fig. 3.

Fig. 9, be B-B cutaway view among Fig. 3.

Figure 10, for blade enlarged diagram of the present invention.

The specific embodiment

As shown in Figure 3, the equipment of washing away 3 of flue gas middle acid substance of the present invention comprise feeding structure 4, be located at feeding structure 4 belows scrubbing structure 5, be located at the sieving and washing structure 6, water liquid can be delivered to scrubbing structure 5 and sieve and wash water spraying structure 7 in the structure 6 of scrubbing structure 5 belows, be located at discharging structure 8, recovery structure 9 and the filter structure 32 of sieving and washing structure 6 belows.

As shown in Figure 3, feeding structure 4 comprises the feed source 41 that can wash away flue gas middle acid substance scrubbing particle of storing, carries the feed appliance 42 of scrubbing particle and is communicated in feed source 41 and the flash spare 43 of 42 of feeders.

The scrubbing particle 31 that feed source 41 stores is the lime stone particle.

As shown in Figure 3, Figure 4, scrubbing structure 5 comprise tool accommodation space 511 housing 51, several are located at housing 51 tops and have first material guiding parts 52 in the first guide space 521 and a plurality of compartment of terrain is located in the housing 51 and can be accepted and load the reaction tower 53 of the scrubbing particle of being carried by feeder 42 31.

Housing 51 has corresponding front and back walls and top, diapire, and offers flue gas import and export 512,513 on front and back walls respectively, pushes up, then runs through setting for reaction tower 53 on the diapire.

The reaction tower of being located in the housing 51 53 is to be defined by several spaced vane group 538 to form, and simultaneously, the top of each reaction tower 53, bottom all have the scrubbing particle and go into, export 539,539 '.

The first guide space 521 of first material guiding parts 52 is to be connected with the scrubbing particle entry 539 of corresponding reaction tower 53.In addition, more offer the feeding mouth 522 that is connected with the feeder 42 of feeding structure 4 on each first material guiding parts 52, simultaneously, 42 of the feeding mouth 522 of each first material guiding parts 52 and feeders more are provided with inlet valve 523.In addition, guide pad 524 above each first material guiding parts 52 is provided with the scrubbing particle entry 539 that is positioned at corresponding reaction tower 53 uses making the scrubbing particle 31 that falls within the reaction tower 53 through feeder 42, first material guiding parts 52 to fall into reaction tower 53 through the guiding of guide pad 524.Moreover, be provided with two material baffles 525 that are positioned at feeding mouth 522 exits in each first material guiding parts 52 of scrubbing structure 5 in addition, and material baffle 525 is the first guide space 521 to be separated into blanking space 526 and watering space 527.

As Fig. 4, shown in Figure 5, the reaction tower of being located at interval in the housing 51 53 can define the air intake duct 531 that is connected and can supplies flue gas to enter with the flue gas import, and two 538 of adjacent vane group of each reaction tower 53 define and can supply the storing road 533 of scrubbing particle 31 fillings, and 533 in two storing roads define the gas off-take 532 that can supply flue gas to discharge; Simultaneously, all storings road 533 can be connected with the air intake duct 531 that is positioned at reaction tower 53 left and right sides, and the feasible flue gas that enters air intake duct 531 through flue gas import 512 can be discharged reaction towers 53 by gas off-take 532 through the storing road 533 in the reaction tower 53.

Each reaction tower 53 structure is identical.As Fig. 4, shown in Figure 5, reaction tower 53 has two first plate body 534, second plate body 535 and a plurality of supporting clapboards of being located at relatively in the housing 51 537 of being located at 534,535 of first and second plate bodys side by side.Simultaneously, supporting clapboard 537 correspond to offer several on the storing road 533 in the reaction tower 53 can be for the scrubbing particle 31 mutual discharge orifices 536 ' of stream mutually; In addition, supporting clapboard 537 corresponds on the gas off-take 532 in the reaction tower 53 and then offers several steam vents that is connected 536; Most vane group 538 have a plurality of inclinations and the overlapping blade 530 that is arranged at 534,535 of each supporting clapboard 537 and first and second plate bodys, and the blade 530 that is positioned at 533 both sides, reaction tower 53 storing roads is to be corresponding inclination mutually, and upper and lower equidistantly, the left and right sides is equidistant; The also corresponding inclination of blade 530 as for blade 530 that is positioned at 532 outsides, reaction tower 53 storing roads and reaction tower 53 gas off-takes 532 both sides.

Moreover the blade 530 two ends system of each vane group 538 of scrubbing structure 5 oppositely bends an angle respectively.So, after blade 530 overlapping settings, 530 spaces that defined of each blade then can be bigger, simultaneously, more can increase the intensity of each blade 530, in addition, can prevent that also scrubbing particle 31 from being fallen in gas off-take 532 or the air intake duct 531 by crack between 530 in blade 530 and the blade when filling is in storing road 533, reach flue gas simultaneously and be difficult for advantage that scrubbing particle 31 is taken out of.

As Fig. 4, shown in Figure 5, the top in storing road 533 system is connected with the scrubbing particle entry 539 of reaction tower 53, make feeder 42 can be respectively with scrubbing particle 31 through each scrubbing particle entry 539 of first material guiding parts 52, housing 51 to be delivered to the storing road 533 in the reaction tower 53.As Fig. 3, shown in Figure 5, first and second plate body 534,535 is flue gas import and export 512,513 places that are positioned on the nearly housing 51, and second plate body 535 is provided with the flue gas outlet valve 529 that can in good time seal gas off-take 532.

As Fig. 4, shown in Figure 6, scrubbing structure 5 has more several second material guiding parts 54 of being located at each reaction tower 53 bottom respectively and having the second guide space 541.Simultaneously, because the structure of each second material guiding parts 54 is identical.

The second guide space 541 of second material guiding parts 54 is to be communicated with the scrubbing particle outlet 539 ' of corresponding reaction tower 53; In addition, second material guiding parts 54 includes two first and second guide plate 544,545, two correspondences corresponding to reaction tower 53 bottoms and nearly scrubbing particle outlet 539 ' both sides and is arranged at reaction tower 53 bottoms and is positioned at ending gas plate 542 and be arranged at two and ending the block 543 at place, gas plate 542 belows of place, gas off-take 532 belows.Each block 543 in second material guiding parts 54 and two ends 542 of gas plates can define the material dropping channel 546 that is connected with the gas off-take 532 of reaction tower 53.First and second guide plate 544,545 and two ends 542 of gas plates then can define the two only air flues 547 that are connected with air intake duct 531 respectively.Scrubbing structure 5 has more several and is arranged at guide block 55 on reaction tower 53 air intake ducts 531 bottoms respectively, be directed to shot-like particle by guide block 55 and end air flue 547 in second material guiding parts 54, and then discharge outside the reaction tower 53 air intake duct 531 bottoms of dropping in the flue gas.

The scrubbing particle 31 that block 543 can be guided 532 bottoms, storing road of dropping is by block 543 and end the material dropping channel 546 that gas plate 542 defined and derive, and uses for reclaiming.

As Fig. 4, Fig. 6, shown in Figure 7, sieve and wash structure 6 and be located at scrubbing structure 5 belows, it comprises the collecting means 61 that is arranged at reaction tower 53 belows and has collection space 611, a plurality of corresponding each reaction tower 53 and is obliquely installed the main screen 62 in the collection space 611 of collecting means 61, the corresponding recovery part 68 of being located at the vibrator 63 on each main screen 62 and being located at each main screen 62 ora terminalis respectively respectively.

Main screen 62 is first guide plate, 544 ends that are arranged at corresponding second material guiding parts 54, and in addition, second stock guide, 545 ends of second material guiding parts 54 of scrubbing structure 5 are provided with the secondary screen 65 opposite with main screen 62 incline directions.And also be provided with vibrator 66 on the secondary screen 65.Simultaneously, the other end of secondary screen 65 then is provided with the outsifting baffle plate 64 parallel with main screen 62 incline directions.When

vibrator

63,66 vibrations, the scrubbing particle 31 in the reaction tower 53 can be flowed out by the block 543 and the gap of major and

minor screen cloth

62,65, and falls on the major and

minor screen cloth

62,65, via

main screen

62 and 64 outputs of outsifting baffle plate, and flows in the recovery part 68.

As Fig. 3, Fig. 4, shown in Figure 6, water spraying structure 7 comprises a plurality of be arranged at respectively in the reaction tower 53 and can be to the water sprinkler 71 of the storing road 533 spray water liquid in the reaction tower 53 and a plurality of each major and

minor screen cloth

62,65 top and can be to falling into the water jet 77 of the scrubbing particle 31 spray water liquid on the major and

minor screen cloth

62,65 of being arranged at respectively.Simultaneously, water sprinkler 71 is to run through to be arranged in first material guiding parts 52, and just in time be arranged in the watering space 527 that is separated by material baffle 525, make the water sprinkler 71 of water spraying structure 7 have enough spaces and 533 spray water liquid of the storing road in reaction tower 53 adequately and uniformly.

As Fig. 3, shown in Figure 7, discharging structure 8 comprises and sieves and washes structure 6 collecting means 61 and be communicated with and can carry and fall in the collecting means 61 outsifting through major and

minor screen cloth

62,65 and deliver to extraneous discharger 81.The structure of discharger 81 is identical with the feeder 42 of feeding structure 4.

As Fig. 3, shown in Figure 7, recovery structure 9 have with etc. recovery part 68 be communicated with and can carry the recover 91 of the scrubbing particle 31 after sieving, simultaneously, the feed source 41 of feeding structure 4 is to be connected with the recover 91 of recovery structure 9, so that recover 91 can be delivered to feed source 41 with scrubbing particle 31.In addition, recover 91 is connected with 42 of feeders and uses the vertical feed appliance 92 that scrubbing particle 31 in the recover 91 is delivered to feeder 42, so that the feeder 42 of feeding structure 4 can be delivered to the scrubbing particle 31 that recovery structure 9 reclaims in each reaction tower 53 by recover 91 and vertical feed appliance 92, and then scrubbing particle 31 is recycled.

As Fig. 3, shown in Figure 8, filter structure 32 includes and is arranged at the outer recovery tank 321 of the collecting means 61 of sieving and washing structure 6, be arranged at the water filter 322 that reclaims tank 321 tops, be opened in spout hole on the collecting means 61 of sieving and washing structure 6, be arranged at the outer overflow guide plate 324 of spout hole and can will reclaim the water-delivery pump 325 that water liquid in the tank 321 be delivered to watering.

As shown in Figure 3, water filter 322 comprises that two correspondences are arranged at first axostylus axostyle 326, second axostylus axostyle 326 ' on the wall that reclaims tank 321, are wound in the filter cloth 327 on first axostylus axostyle 326 and can drive the motor 328 that second axostylus axostyle 326 ' rotates.Simultaneously, the one end system of the filter cloth 327 on first axostylus axostyle 326 is fixedly set on second axostylus axostyle 326 ', make be located at first and second axostylus axostyle 326,326 ' filter cloth 327 just can cross the top of reclaiming tank 321, and, the filter cloth 327 on first axostylus axostyle 326 is wound on second axostylus axostyle 326 ' by the drive of the motor 328 of second axostylus axostyle 326 '.In addition, the end of overflow guide plate 324 system is positioned at filter cloth 327 tops, makes the water liquid that is flowed out by spout hole to drop down onto in the recovery tank 321 after filter cloth 327 filters.

As Fig. 3, shown in Figure 8, when the present invention operates, at first need control inlet valve 523 breakdowns of 42 of the feeding mouth 522 of each first material guiding parts 52 and feeders, and start the feeder 42 of recovery structure 9 recovers 91 and feeding structure 4 simultaneously, make by the wet scrubbing particle 31 that has feed source 41, can be recovered device 91 and be delivered to vertical feed appliance 92, in addition, when vertical feed appliance 92 up is delivered to the feeder 42 of feeding structure 4 with scrubbing particle 31, feeder 42 can be delivered to scrubbing particle 31 in the storing road 533 of each reaction tower 53 through first material guiding parts 52 in regular turn, simultaneously, enter 31 on scrubbing particle in the storing road 533 of each reaction tower 53 and can be angle of repose greater than scrubbing particle 31 in the storing road 533 because of the angle of inclination of blade 530, so when scrubbing particle 31 continue to be packed into storing road 533 can be because of the angle of repose of scrubbing particle 31, make scrubbing particle 31 to be piled up in gradually in the storing road 533, and can not overflow, and be communicated with a flash spare 43 in addition by

feeder

42 and 41 in feed source, make that unnecessary scrubbing particle 31 can be carried go back to feed source 41 by flash spare 43 in the feeder 42.

As Fig. 3, Fig. 8, shown in Figure 9, after this, after scrubbing particle 31 fillings in each reaction tower 53 finish, flue gas valve 529 breakdowns on second plate body 535 among reaction tower 53a, 53b, the 53c in each reaction tower 53 of control scrubbing structure 5, flue gas can be entered through each by the accommodation space 511 of the flue gas import 512 of housing 51, housing 51 and be adjacent to mutually in the air intake duct 531 that is defined between reaction tower 53b, 53c in the housing 51 this moment, and was entered in the storing road 533 of reaction tower 53b, 53c by the vane group 538 of reaction tower 53.This moment, wetted scrubbing particle 31 in the storing road 533, can with the acidic materials in the flue gas, as sulfur dioxide, sulfur sesquioxide reaction, and form membranaceous product, as calcium sulfate or calcium sulfite in the surface; Afterwards, the flue gas behind scrubbing then can flow in the gas off-take 532, and last flue gas is circulated to the external world through the flue gas valve 529 of each reaction tower 53 by the flue gas outlet 513 of housing 51 again.

In this, because the scrubbing particle 31 in the reaction tower of the present invention 53 storing roads 533 is to be the state that leaves standstill, therefore, the particulate contaminant that scrubbing particle 31 is contained in more can filtering flue gas, simultaneously, also can the more effective operation of carrying out scrubbing.In addition, as shown in Figure 4, when flue gas enters air intake duct 531, though the guide space 541 of second material guiding parts 54 is to be connected with air intake duct 531, but by ending 544,545 institutes of gas plate 542 and first and second guide plate and define only air flue 547 and material dropping channel 546 by ending the design of gas plate 542, making with block 543, so flue gas is unlikely to can be directly through reaction tower 53 bottoms and by gas off-take 532 discharges, simultaneously, also isolated flue gas communicates with extraneous air in reaction tower 53 bottoms.

In addition, when other reaction towers 53 are finished the pan feeding process of scrubbing particle 31 successively, then can open each flue gas valve 529 successively, make each reaction tower 53 of scrubbing structure 5 all wash away the action that contains acidic materials in the flue gas simultaneously.

After the present invention used a period of time, in the time of must cleaning and remove on the scrubbing particle 31 formed membranoid substance, as Fig. 8, shown in Figure 9, operating personnel then can clean in each reaction tower 53 the scrubbing particle 31 in the reaction tower 53a in advance.When cleaning during reaction tower 53a, need earlier flue gas valve 529 to be closed, to sieve and wash being arranged in the collecting means 61 of structure 6 again, and open and be positioned at the master, secondary screen 62, water sprinkler 71 on the water jet 77 of 65 tops and first material guiding parts 52, begin to wash the scrubbing particle 31 in the storing road 533, restart the vibrator 63 of sieving and washing structure 6 afterwards, 66 drive the master, secondary screen 62, during 65 vibrations, make and to be statically placed in scrubbing particle 31 in the reaction tower 53a storing road 533 by the master, secondary screen 62,65 and block 543 between the gap flow out, simultaneously, when scrubbing particle 31 moves down gradually, the current that caused by the friction of itself and other scrubbing particle and water sprinkler 71 continuous spray water liquid, the membranaceous product on scrubbing particle 31 surfaces is separated fast with scrubbing particle 31, and apace membranaceous product is taken to reaction tower 53 bottoms by current, simultaneously again by the master, secondary screen 62, water jet 77 on 65 is constantly to the master, secondary screen 62, scrubbing particle 31 water sprays on 65, at this moment, the membranaceous product of separating with scrubbing particle 31 is then through the master, secondary screen 62,65 sieve, make membranaceous product to fall in the collecting means 61 with water liquid by main screen 62, in addition, the membranaceous product that is dropped by secondary screen 65 also can be subjected to stopping of outsifting baffle plate 64, fall to collecting means 61 simultaneously, and be delivered to the external world by the discharger 81 that is communicated with collecting means 61.31 on the scrubbing particle of having dispeled membranaceous product on the main screen 62 can fall to along main screen 62 and reclaim in the part 68, and by recover 91 will be wetting fully, cleaning finishes and the scrubbing particle 31 of low temperature is delivered in the feeder 42 through vertical feed appliance 92, for recycling, moreover, when reaction tower 53a when cleaning action, can be simultaneously with corresponding to inlet valve 523 breakdowns of reaction tower 53a, with the scrubbing particle 31 among the postreaction tower 53a.

After this reaction tower 53a cleans out, can close

vibrator

66,63, water sprinkler 77 and the water jet 71 of corresponding reaction tower 53a, and the flue gas valve 529 of reaction tower 53a opened, incorporate the scrubbing operation into, after clean each reaction tower 53 in aforesaid mode in regular turn again.

Moreover, enter the water liquid of the collecting means 61 of each reaction tower 53 below by water sprinkler 71 or water jet 77, also can be by the suspended particulates that contained in the filter structure 32 filtered water liquid of being located at scrubbing structure 5 one sides, its mainly be when water liquid after the spout hole of collecting means 61 and overflow guide plate 324 flow out, flow to immediately and be set around the filter cloth 327 that collection tank 321 tops were gone up and be positioned to first and second axostylus axostyle 326,326 ', so, via the water liquid of filter cloth 327 filtering suspended particulates, promptly be delivered to watering through water-delivery pump 325 again and reclaim use.In addition, after filter cloth 327 uses a period of time, the motor 328 that can control on second axostylus axostyle 326 ' rotates, and makes second axostylus axostyle 326 ' filter cloth 327 of dirt can be furled, and the filter cloth 327 of cleaning on first axostylus axostyle 326 is moved to recovery tank 321 tops for continuing use.

As mentioned above, the present invention has following effect:

1, invent its quantity by scrubbing particle stored in each reaction tower, can't as fixed-bed type wash away equipment because the lime stone amount that is positioned on the main screen plate can not be too thick, in order to avoid ventilation and demoulding efficient are bad, and then cause the scrubbing benefit to reduce shortcoming, in addition, reaction tower of the present invention is when carrying out the work of scrubbing, be in the state that leaves standstill by the scrubbing particle system that is stored in wherein, therefore, can not produce the shortcoming that limestone powder is taken out of with flue gas, simultaneously, also make on the blade and to be difficult for producing the disappearance that general as described above thermopnore formula is washed away the blind envelope that equipment has; Moreover the particulate contaminant that the scrubbing particle that leaves standstill is contained in more can filtering flue gas as flying dust, reaches better filter effect.

2, in the reaction tower through between the scrubbing particle mutually friction and washing effect and the scrubbing particle that is separated from each other with membranaceous reactant, can be via the washing of action of sieving and washing the structural vibrations device and water jet, and then membranaceous product mat water liquid reached be easy to the effect that the membranaceous product that the scrubbing particle is outer is separated.

3, be gradually toward the bottom when mobile in reaction tower by the scrubbing particle again, in reaction tower, become the scrubbing particle of bridge formation state can in this process, be separated from each other, do not have the situation that becomes to build bridge between the lime stone particle and do not have the general as described above equipment of washing away of class by water liquid that water sprinkler sprayed.

4, because the scrubbing particle in the reaction tower of the present invention is the state that leaves standstill when scrubbing, therefore, each reaction tower inside of the present invention can't be washed away equipment just like general thermopnore formula and be produced a large amount of limestone powders and the shortcoming of membranoid substance, and then make the flue gas of discharging flue gas outlet can meet environmental regulations, simultaneously, more can save nearly three times of lime stone particle amounts of consuming because of friction.

5, because the equipment system of washing away of the present invention utilizes water jet, water sprinkler to clean the scrubbing particle, therefore, the present invention does not have powder in the process of washing, dust produces; Simultaneously, the design of mat flue gas outlet valve again makes reaction tower not have flue gas when cleaning and enters, and then does not have the problem that powder or dust are taken out of.

6, since the present invention when washing the scrubbing particle, promptly wettable scrubbing particle, and needn't carry out wetting action more in addition, thus reach effect easy and simple to handle.

7, in general, flue gas is a kind of high-temperature gas, and scrubbing particle of the present invention can lowered the temperature after washing, so, when flue gas touched the scrubbing particle, the aqueous vapor in the flue gas then can be condensed, make the scrubbing particle when contacting, improve its degree of wetting more simultaneously with flue gas.So, reaction benefit that can each scrubbing particle of more effective lifting.

8, as shown in figure 10, because the blade two ends of vane group of the present invention are oppositely to bend an angle, and then can when being arranged on the supporting clapboard, blade increase the intensity of each blade; In addition, each blade is when being arranged between supporting clapboard, and the vertical direction at each blade two ends and horizontal plane system are 75 ° angle; Simultaneously, it is overlapping with adjacent vanes that the blade of each vane group all has part, and thus, when the filling of scrubbing particle was in the storing road, then the angle that can be bent because of the angular relationship and the blade two ends of blade made the scrubbing particle can not overflow outside the storing road; Moreover, owing to generally wash away the blade of equipment when being provided with, the angle design that similar this case is not arranged, therefore the present invention is in the angle of being located between supporting clapboard by the angular relationship of blade and the blade two ends are bent, thereby between making between two blades apart from can more generally wash away the blade of equipment be wide, make by the interlobate flue gas flow velocity of the present invention and can more generally wash away equipment for slow, thus the present invention be arranged in the scrubbing particle in storing road be difficult for being entrained with flue gas the storing road outside; So, the present invention can prevent that more the scrubbing particle from when filling is in the storing road, overflowing the storing road by the gap between the blade except the intensity that can increase each blade, more can reach simultaneously the scrubbing particle and be difficult for the advantage that is entrained with or the like by flue gas.

9, react owing to the present invention uses the scrubbing particle flue gas direct and high temperature of low temperature and moisture, make flue gas cool to optimal reaction temperature, so need before reaction tower, to install any in order to the temperature of adjustment flue gas and the flue gas conditioning chamber of humidity.

Moreover, the major and minor screen cloth of the present invention can utilize first screen cloth of the mesh with two kinds of different sizes and the second screen cloth upper-lower overlapping to form, the mesh number of first screen cloth on upper strata needs the mesh number less than second screen cloth of lower floor, so, flow in the scrubbing particle on the major and minor screen cloth by the storing road, the less scrubbing particle of particle diameter then can pass through first screen cloth, on second screen cloth, carry out simultaneously the operation of diffusion barrier shape product, the weight of disperseing the individual layer screen cloth originally must bear, so, prolonged the service life of main screen.

Claims

1, a kind of equipment of washing away of flue gas middle acid substance, it is characterized in that it comprise the feeding structure, be located at feeding structure below the scrubbing structure, be located at sieving and washing structure, water liquid can be delivered to the scrubbing structure, sieve and wash water spraying structure and recovery structure in the structure of scrubbing structure below; The feeding structure comprises that storage can wash away the feed source of flue gas middle acid substance scrubbing particle and carry the feed appliance of scrubbing particle; The scrubbing structure comprises that several adjacent settings define air intake duct and can accept and load the scrubbing particle of being carried by feeder and have the reaction tower that the scrubbing particle is gone into, exported; Reaction tower system is spaced and defines gas off-take and connection by several and be positioned at the gas off-take both sides and defines for the vane group in the storing road of scrubbing particle filling and form; The two ends of each vane group blade system is reverse bending one predetermined angular respectively, and vane group is when being arranged between the supporting clapboard, and the vertical direction at each blade two ends and horizontal plane system are 75 ° angle; The storing road is communicated with the scrubbing particle entry, gas off-take is communicated with the outlet of scrubbing particle; Sieving and washing structure comprises collecting means, a plurality of corresponding each reaction tower that is arranged at the reaction tower below and is obliquely installed the main screen in collecting means, the corresponding recovery part of being located at the vibrator on each main screen and being located at each main screen ora terminalis respectively respectively; Water spraying structure comprises a plurality of water sprinkler and a plurality of water jets that are arranged at each main screen top respectively that are arranged at reaction tower respectively; Recovery structure has and reclaims part and be communicated with and can carry scrubbing particle after sieving to the recover of feeder.

2, the equipment of washing away of flue gas middle acid substance according to claim 1 is characterized in that described scrubbing structure plural number reaction tower is provided with the housing of tool for its ccontaining accommodation space outward; Housing has corresponding front and back walls and top, diapire, and offers the flue gas import and export on front and back walls respectively, pushes up, then runs through setting for reaction tower on the diapire; The scrubbing particle entry of each reaction tower is connected with feeder; Be placed in and define the air intake duct that enters for flue gas between each reaction tower in the housing.

3, the equipment of washing away of flue gas middle acid substance according to claim 1 is characterized in that each reaction tower top of described scrubbing structure is provided with first material guiding parts with the first guide space that is connected with the scrubbing particle entry of corresponding reaction tower; Offer the feeding mouth that is connected with the feeder of feeding structure and is provided with inlet valve on each first material guiding parts; Housing is provided with several guide pads that is arranged in first material guiding parts and is positioned at the scrubbing particle entry top of corresponding reaction tower; The water sprinkler of water spraying structure is to run through to be arranged on first material guiding parts.

4, the equipment of washing away of flue gas middle acid substance according to claim 3, it is characterized in that being provided with in each first material guiding parts of described scrubbing structure two material baffles that are positioned at the feeding mouth exit, and material baffle system can be divided into the first guide space region blanking space and watering space.

5, the equipment of washing away of flue gas middle acid substance according to claim 1 is characterized in that the feed source system of described feeding structure is connected with the recover of recovery structure; Be connected with between recover and feeder and use the vertical feed appliance that scrubbing particle in the recover is delivered to feeder; Feeding structure feed source is communicated with feed appliance and therebetween is provided with flash spare; Sieve and wash the structure collecting means and be connected with discharging structure with outsifting discharger in the conveying collecting means.

6, the equipment of washing away of flue gas middle acid substance according to claim 1 and 2 is characterized in that described scrubbing structure has second material guiding parts that several are located at housing bottom respectively and have the second guide space; The second guide space system of each second material guiding parts is communicated with the scrubbing particle outlet of corresponding reaction tower; Second material guiding parts includes two first and second guide plate, two correspondences corresponding to reaction tower bottom and nearly scrubbing particle outlet both sides and is arranged at the reaction tower bottom and is positioned at ending the gas plate and be arranged at two and ending the block at place, gas plate below of place, gas off-take below; Each block in second material guiding parts and two ends between the gas plate can define the material dropping channel that is connected with the reaction tower gas off-take, and first and second guide plate and two only then defines the two only air flues that are connected with air intake duct respectively between the gas plate.

7, the equipment of washing away of flue gas middle acid substance according to claim 1 is characterized in that described scrubbing structure has several and is arranged at guide block on the reaction tower air intake duct bottom respectively.

8, the equipment of washing away of flue gas middle acid substance according to claim 6 is characterized in that the described first guide plate end that structure main screen system is arranged at corresponding second material guiding parts of sieving and washing; Be provided with opposite and be provided with the secondary screen of vibrator in the second stock guide end of second material guiding parts with the main screen incline direction; The other end of secondary screen then is provided with the outsifting baffle plate parallel with the main screen incline direction; Water spraying structure is provided with the water jet that is positioned at the secondary screen top.

9, the equipment of washing away of flue gas middle acid substance according to claim 1 and 2 is characterized in that described reaction tower has two first plate body, second plate body and a plurality of supporting clapboards of being located at relatively in the housing of being located at side by side between first and second plate body; Supporting clapboard correspond to offer several on the storing road in the reaction tower can be for the scrubbing particle mutual discharge orifice of stream mutually; Supporting clapboard corresponds on the gas off-take in the reaction tower and offers the steam vent that several are connected; Second plate body is provided with the flue gas outlet valve that can be communicated with in good time/seal gas off-take; Be positioned at both sides, reaction tower storing road vane group in most vane group and have the blade that plural number is corresponding inclination mutually; And be positioned at the blade in the outside, reaction tower storing road and the blade of reaction tower gas off-take both sides and also become corresponding inclination.

10, the equipment of washing away of flue gas middle acid substance according to claim 1 is characterized in that the described collecting means of sieving and washing structure is provided with filter structure outward; It comprises and is arranged at the outer recovery tank of the collecting means of sieving and washing structure, is arranged at the water filter that reclaims the tank top, is opened in spout hole on the collecting means of sieving and washing structure, is arranged at the outer overflow guide plate of spout hole and can will reclaims the water-delivery pump that water liquid in the tank be delivered to watering; Water filter comprises that two correspondences are arranged at first axostylus axostyle, second axostylus axostyle on the wall that reclaims tank, are wound in the filter cloth on first axostylus axostyle and can drive the motor of second spindle rotation; The one end system of the filter cloth on first axostylus axostyle is fixedly set on second axostylus axostyle, makes the filter cloth of being located at first and second axostylus axostyle just can cross the top of reclaiming tank; The end system of overflow guide plate is positioned at the filter cloth top.