CN101644437B - Flue gas purifying system and method - Google Patents

Flue gas purifying system and method Download PDF

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Publication number
CN101644437B
CN101644437B CN2009101626670A CN200910162667A CN101644437B CN 101644437 B CN101644437 B CN 101644437B CN 2009101626670 A CN2009101626670 A CN 2009101626670A CN 200910162667 A CN200910162667 A CN 200910162667A CN 101644437 B CN101644437 B CN 101644437B
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China
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flue gas
deduster
valve
mixer
incinerator
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CN2009101626670A
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Chinese (zh)
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CN101644437A (en
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宋正兴
陈砚雄
刘立平
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江苏亿金环保设备工程有限公司
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Publication of CN101644437A publication Critical patent/CN101644437A/en
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Abstract

The invention discloses a flue gas purifying system and a method. The system comprises a feed bin, a reaction tower and a deduster, wherein, the feed bin is used for transporting the garbage to a garbage incinerator when the garbage amount meets the primary combustion amount of the garbage incinerator; the reaction tower is connected with the garbage incinerator by a pipeline to be used for the flue gas to react with the lime slurry ejected from a rotary sprayer; the deduster is connected with the reaction tower by the pipeline to be used for dedusting of the flue gas treated by the reaction tower. The system of the invention is high in safety, simple in operation, high in purification efficiency and durable in use.

Description

Flue gas purification system and method

Technical field

The present invention relates to flue gases purification, relate in particular to flue gas purification system and method.

Background technology

The conventional treatment method of rubbish has landfill, burning and compost etc.Waste incineration receives much attention because of advantages such as it are innoxious thoroughly, the processing time is short, can reclaim heat energy, floor space is less.Flue gas purification system is the key that control is polluted in waste incineration, and the concentration of emission of all contaminations should reach the regulation of GB GWKB3-2000 after the gas cleaning.Gas cleaning generally mainly contains by depickling, charcoal absorption, three parts of dedusting to be formed.The technology that generally adopts mainly is semidry method/dry method+sack cleaner both at home and abroad, and wherein depickling technology is the core of garbage-incineration smoke purifying system.

The gas cleaning desulphurization system of garbage burning factory generally is divided into wet method, semidry method and dry desulfurization depickling technical scheme at present.Wet fuel gas desulfurizing technology adopts alkaline slurry or solution as absorbent mostly, mainly is to utilize lime stone or lime washing agent and smoke reaction, and product precipitates in cleaning solution, abandons or reclaims with gypsum form after separating.There are problems such as capital construction operating cost height, floor space are big, stabilization of equipment performance difference in this technology.Semidry method mainly is to utilize that desulfurizing agent carries out desulfurization under drying regime, regeneration or desulfurization and handle desulfurization product under drying regime under wet condition under wet condition, and its desulfuration efficiency is not high, cost is high.Dry desulfurizing process is a kind of spray absorbent technology, can be divided into calcium base and sodium base technology by different its of used absorbent, and desulfuration efficiency is not high under this technology.

Wherein, the structure kind of the feed hopper in the semidry process desulfurizer is a lot, small-sized rubbish hopper only adopts the structure of flip-shell just can realize dumping rubbish at any time, and loam cake just can overturn with the dustbin capping at random then, as family expenses, office dustbin.For the bulky refuse treatment facility, generally all be directly rubbish to be added in garbage pulverator or the incinerator by feeding port, said structure is unfavorable for that pulverizer grinds the pulverizing of rubbish repeated multiple times or adds in the incinerator and burn immediately, because the pulverizing of repeated multiple times or burn away the refuse and need the regular hour, rubbish can only be pulverized rubbish by the reamer in the pulverizer is disposable in existing equipment, adds new rubbish after having burnt once more.Because if rubbish is not by disposable pulverizing or do not have burned intact, the feeding port place has new rubbish to be added again, the rubbish that pulverizer must be handled new input makes incineration firing thorough inadequately, therefore existing bulky refuse treatment facility can not carry out rubbish the pulverizing of repeated multiple times or thoroughly burn, after removing non-once input rubbish, certain interval of time drops into new rubbish once more.Therefore be necessary existing treatment facility is immediately improved.

Summary of the invention

The objective of the invention is at the deficiencies in the prior art provide a kind of can with the rubbish batch by batch and stage by stage that drops into continuously put in the incinerator, flue gas purification system and method that the flue gas that can produce burning away the refuse fully purify.

For achieving the above object, the object of the present invention is to provide a kind of flue gas purification system, comprising:

Feed hopper is used for when rubbish quantity satisfies incinerator primary combustion consumption rubbish being delivered to incinerator;

Reaction tower is connected with incinerator by pipeline, and the lime slurry that is used for ejecting in flue gas and the rotary sprayer reacts; And

Deduster is connected with reaction tower by pipeline, is used for the flue gas after handling through reaction tower is carried out dust removal process.

Wherein, the pipe side wall of coupled reaction tower and deduster is equipped with activated carbon eductor, and activated carbon eductor is used to eject activated carbon powder, with the harmful substance in the absorption flue gas.

Wherein, feed hopper can comprise hopper shell, side at hopper shell can be provided with the baffle plate framework, inboard at the baffle plate framework can be provided with valve plate, but valve plate is positioned at feed hopper, the both sides, top of valve plate can be connected with an end of lift arm by rotating shaft, and the other end of lift arm can be hinged with piston rod.

Wherein, reaction tower can comprise tower body, gas approach pipeline, rotary sprayer and air-out smoke pipe, and rotary sprayer can be positioned at the top of tower body, and the gas approach pipeline can be installed on the below of rotary sprayer, and the air-out smoke pipe can be positioned at the bottom of described tower body.

Wherein, deduster can comprise by-passing valve, is used for when occurring supply gas pressure in the deduster and be lower than preset critical flue gas being discharged by by-passing valve; By-passing valve can comprise the bypass adapter, be installed on the barometric pipe that bypass is taken over outer wall, promotes cylinder, coupling assembling, and the bivalve plate, wherein promotes the end that cylinder can be connected in coupling assembling, and the bivalve plate can be connected in the other end of coupling assembling.

Wherein, coupling assembling can comprise interconnective connecting rod and tube connector.

Wherein, on the tube connector Weight plate can be installed.

Wherein, incinerator and deduster bottom have dust inlet, and push-pull valve can be installed by the dust inlet place, and push-pull valve is used to control the circulation of dust inlet place material.

Wherein, the plate that push-pull valve can comprise valve body, the support that is connected with valve body, be installed on the leading screw of internal stent, is connected with an end of leading screw, and the handwheel that is connected with the leading screw other end.

Wherein, this system can comprise that also flying dust stores curing apparatus, and the flying dust that is used for that incinerator, reaction tower or deduster are produced mixes and extrusion molding is handled.

Wherein, flying dust stores curing apparatus can comprise mixer, and mixer is used for flying dust is mixed with cement, chelating agent, obtains having the ash group of certain humidity and degree of holding tightly; Mixer can comprise the mixer housing, and the mixer housing has flying dust import, cement import and chelating agent import; The mixer enclosure interior has mixes axle, is provided with and mixes a transmission mechanism that is connected at an end of mixer; The feed opening that the mixer housing also has exhaust outlet and is positioned at the exhaust outlet below.Mix axle and can have the blade that is the setting of 15-25 degree angle with its axis.

Wherein, flying dust stores curing apparatus also can comprise banded extruder, and banded extruder is used for slivering is pushed by the ash group that mixer is discharged; Banded extruder can comprise housing, has feed opening on housing, has the axle of extruding in enclosure interior, an end of banded extruder have central shaft with housing vertical be extruded into female cap, be extruded into female cap and comprise six sections that are evenly arranged in its central shaft at most.

The present invention also provides a kind of method of utilizing said system to carry out gas cleaning, may further comprise the steps:

S1, the rubbish that the material grasping bucket will be stored in the waste deposit pond is delivered to feed hopper;

S2, when the rubbish quantity in the feed hopper satisfied incinerator primary combustion consumption, the valve plate of feed hopper was opened, and rubbish is delivered in the incinerator burned;

S3, the flue gas after burning in the incinerator enters reaction tower, in reaction tower with rotary sprayer in the lime slurry that ejects react;

S4 carries out reacted flue gas and flows along pipeline, sprays the activated carbon powder that enters with pipe side wall and mixes, the harmful substance in the activated carbon powder absorption flue gas;

S5, the flue gas flow direction deduster by the deduster detention, falls into ash bucket through the solid after the deduster processing, and is transported to flying dust storage curing apparatus, and flying dust is mixed flying dust storage curing apparatus and extrusion molding is handled; Extract out by blower fan through the gas after the deduster processing.

Technique scheme has following advantage:

1, putting in the incinerator of the rubbish batch by batch and stage by stage that will drop into continuously by feed hopper, this feed hopper is simple in structure, and is durable in use, and operating maintenance is convenient;

2, spray vaporific lime slurry by rotary sprayer, make flue gas fully mix with lime slurry, gas cleaning is abundant, reaction efficiency is high thereby make, and cost is low;

3, by the zero leakage that the barometric pipe be communicated with atmosphere has guaranteed dirt air chamber and air-purifying chamber in the deduster is set on the by-passing valve; And when Weight plate being set being implemented in deduster and abnormal conditions such as supply gas pressure subcritical value occur, open the automatic protection functions of valve plate fast to guarantee that flue gas is discharged.

4, the spiral rotation by the handwheel that is provided with on the push-pull valve forms the spiral width of cloth with the rectilinear motion of leading screw, it is reciprocating in valve body to have realized driving plate by leading screw, operating personnel rotate handwheel with less power can produce very big linear thrust on the spiral width of cloth, realized opening and closing of push-pull valve.

5, guarantee the balance of mixer inner air and outer air pressure by exhaust outlet set on the mixer, take place with the situation of avoiding causing flying dust can not fall smoothly and then cram in the flying dust import owing to mixer housing internal pressure is excessive.

6, by the section of evenly arranging on the banded extruder bulk ash is rolled into a ball and cut into strip, have the advantage that the putty phenomenon evenly, does not appear in simple in structure, working stability, discharging.

Description of drawings

Fig. 1 is the system architecture schematic diagram of the embodiment of the invention;

Fig. 2 is the structural representation of feed hopper in the system of the embodiment of the invention;

Fig. 3 is the structural representation of reaction tower in the system of the embodiment of the invention;

Fig. 4 is the structural representation of by-passing valve in the system of the embodiment of the invention;

Fig. 5 is the structural representation of system's centerboard valve of the embodiment of the invention;

Fig. 6 is the top plan view of mixer in the system of the embodiment of the invention;

Fig. 7 is that the A-A of Fig. 6 is to cutaway view;

Fig. 8 is the elevation cross-sectional view of banded extruder in the system of the embodiment of the invention.

Wherein, 1 feed hopper; 2 incinerators; 3 reaction towers; 4 rotary sprayers; 5 dedusters; 6 activated carbon eductors; 7 hopper shells; 8 baffle plate frameworks; 9 valve plates; 10 rotating shafts; 11 lift arms; 12 piston rods; 13 oil cylinders or cylinder; 14 tower bodies; 15 gas approach pipelines; 16 air-out smoke pipes; 17 bypass are taken over; 18 barometric pipes; 19 promote cylinder; 20 bivalve plates; 21 connecting rods; 22 tube connectors; 23 Weight plates; 24 valve bodies; 25 supports; 26 leading screws; 27 plates; 28 handwheels; 29 material grasping buckets; 30 waste deposit ponds; 31 flying dusts store curing apparatus; 32 blower fans; 33 chimneys; 34 pulping systems; 35 scraper plate machines; 36 conveying worms; 38 mixer housings; 39 flying dust imports; 40 cement imports; 41 chelating agent imports; 42 mix axle; 43 transmission mechanisms; 44 exhaust outlets; 45 first feed openings; 47 housings; 48 second feed openings; 49 extrude axle; 50 are extruded into female cap; 51 motors; 52 transmission devices; 53 shaft couplings.

The specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.

The object of the present invention is to provide a kind of flue gas purification system, Fig. 1 is the system architecture schematic diagram of the embodiment of the invention; Fig. 2 is the structural representation of feed hopper in the system of the embodiment of the invention; Fig. 3 is the structural representation of reaction tower in the system of the embodiment of the invention; Fig. 4 is the structural representation of by-passing valve in the system of the embodiment of the invention; Fig. 5 is the structural representation of system's centerboard valve of the embodiment of the invention; Fig. 6 is the top plan view of mixer in the system of the embodiment of the invention; Fig. 7 is that the A-A of Fig. 6 is to cutaway view; Fig. 8 is the elevation cross-sectional view of banded extruder in the system of the embodiment of the invention.Shown in Fig. 1 to 8, comprise according to the flue gas purification system of the embodiment of the invention:

Feed hopper 1 is used for when rubbish quantity satisfies incinerator primary combustion consumption rubbish being delivered to incinerator 2;

Reaction tower 3 is connected by pipeline with incinerator 2, and the lime slurry that is used for ejecting in flue gas and the rotary sprayer 4 reacts; And

Deduster 5 is connected by pipeline with reaction tower 3, is used for the flue gas after handling through reaction tower 3 is carried out dust removal process.

In the present embodiment, the pipe side wall of coupled reaction tower 3 and deduster 5 is equipped with activated carbon eductor 6, and activated carbon eductor 6 is used to eject activated carbon powder, with the harmful substance in the absorption flue gas.

In the present embodiment, feed hopper 1 can comprise hopper shell 7, side at hopper shell 7 can be provided with baffle plate framework 8, inboard at baffle plate framework 8 can be provided with valve plate 9, valve plate 9 can be positioned at feed hopper 1, the both sides, top of valve plate 9 can be connected with an end of lift arm 11 by rotating shaft 10, and the other end of lift arm 11 can be hinged with an end of piston rod 12, and piston rod 12 can match with oil cylinder or cylinder 13.Consider the intensity of valve plate 9 and rotating shaft 10, both are made of one formula, and rotating shaft 10 and valve plate 9 are connected and fixed by positioning cylindrical surface by bearing block (not shown) and high strength screw.When rubbish is stored into when being fit to put into the volume of incinerator 2, the valve plate 9 of feed hopper 1 is opened, and garbage waste enters the incinerator burning.

In the present embodiment, reaction tower 3 can comprise tower body 14, gas approach pipeline 15, rotary sprayer 4 and air-out smoke pipe 16, rotary sprayer 4 can be arranged in the top (Fig. 2 only illustrates the part that rotary sprayer stretches into reaction tower) of tower body 14, gas approach pipeline 15 can be installed on the below of rotary sprayer 4, and air-out smoke pipe 16 can be positioned at the bottom of tower body 14.Reaction tower 3 can carry out preliminary purification to the flue gas that waste incineration produces, and removes acid ingredient wherein.Reaction tower 3 is when work, and the high-temperature acidic flue gas that produces in the incinerator 2 enters gas approach pipeline 15 along the direction of the tangential direction of the housing that is parallel to tower body 14 tops, thereby enters the top of tower body 14.Because flue gas enters tower body 14 along the direction of the tangential direction of the housing that is parallel to tower body 14 tops, and being shaped as of tower body 14 is cylindrical, so flue gas can be along the downward spiral rotation of tower body 14 inwalls under the effect of centripetal force and gravity.Rotary sprayer 4 sprays vaporific lime slurry, lime slurry also moves downward, and flue gas fully mixes with lime slurry, and sufficient acid-base neutralization reaction and oxidation reaction take place rapidly under 120-140 ℃ temperature, thereby remove the most acidic materials in the flue gas, as SO 2, HF, HCL etc.Reacted flue gas enters by a downward-sloping end that stretches into from air-out smoke pipe 16 in the tower body 14, and discharges from its other end, enters down fume purifying processes one.

In the present embodiment, deduster 5 can comprise by-passing valve, is used for when supply gas pressure occurring in the deduster 5 and be lower than preset critical flue gas being discharged by by-passing valve; By-passing valve can comprise bypass adapter 17, be installed on the barometric pipe 18 that bypass is taken over 17 outer walls, promote cylinder 19, coupling assembling, and bivalve plate 20, wherein promoting the end that cylinder 19 can be connected in coupling assembling, bivalve plate 20 can be connected in the other end of coupling assembling.Wherein, coupling assembling can comprise interconnective connecting rod 21 and tube connector 22, on the tube connector 22 Weight plate 23 can be installed.Under the state of deduster 5 normal operations, enough supply gas pressures are arranged by magnetic valve (two-position five-way valve for example, not shown) drive to promote cylinder 19 and bivalve plate 20 is upwards mentioned by coupling assembling, make bivalve plate 20 and bypass take over 17 and closely contact, hinder the air-purifying chamber that flue gas flows valve plate top above the dirt air chamber of following valve plate below enters.Because barometric pipe 18 is identical with external atmosphere, the top of therefore top valve plate and the bottom of following valve plate are negative pressure state, have so just stoped overflowing of gas in dirt air chamber and the air-purifying chamber, thereby have realized zero leakage.Abnormal conditions occur at deduster, for example during supply gas pressure subcritical value, bivalve plate 20 is opened under the counterweight effect of Weight plate 23 fast, makes flue gas discharge.In the present embodiment, incinerator 2 and deduster 5 bottoms have dust inlet, and push-pull valve can be installed by the dust inlet place, and push-pull valve is used to control the circulation of dust inlet place material.Wherein, the plate 27 that push-pull valve can comprise valve body 24, the support 25 that is connected with valve body 24, be installed on the leading screw 26 of support 25 inside, is connected with an end of leading screw 26, and the handwheel 28 that is connected with leading screw 26 other ends.It is reciprocating in valve body 24 that the screw pair that the rectilinear motion of the spiral rotation of the push-pull valve of present embodiment by handwheel 28 and leading screw 26 forms has realized driving plates 27 by leading screw 26, operating personnel rotate handwheel 28 with less power can produce very big linear thrust on screw pair, realized opening and closing of push-pull valve.In the time need overhauling the equipment below the push-pull valve or change, to start to take turns with hand-screw, the spiral rotation of handwheel 28 drives leading screw 26 moving linearlies, and leading screw 26 drives plates 27 and passes pin with split pin hole reeve valve body 24, thereby closes push-pull valve, the cut-out logistics; When overhaul of the equipments or replacing finish need carry logistics once more the time,, plate 27 is extracted out from valve body 24 with the reverse turn handwheel 28 of hand.

In the present embodiment, this system can comprise that also flying dust stores curing apparatus 31.Wherein, flying dust stores curing apparatus 31 can comprise mixer, and mixer is used for the flying dust that incinerator 2, reaction tower 3 or deduster 5 etc. are produced is mixed with cement, chelating agent, obtains having the ash group of certain humidity and degree of holding tightly; Mixer can comprise mixer housing 38, and mixer housing 38 has flying dust import 39, cement import 40 and chelating agent import 41; Mixer housing 38 inside have mixes axle 42, is provided with and mixes 42 transmission mechanism that are connected at an end of mixer, and for example belt gear 43; First feed opening 45 that mixer housing 38 also has exhaust outlet 44 and is positioned at exhaust outlet 44 belows.Mix axle 42 and have the blade (not shown) that is 15 degree angles settings with its axis.

Mixer is when work, flying dust enters from flying dust import 39, cement enters from cement import 40, chelating agent solution enters from chelating agent import 41, drive the rotation of mixing axle by transmission mechanism, the ash group that flying dust, cement and chelating agent is formed by the rotation of mixing axle 42 mixes, and mixes the blade of axle 42 and delivers to first feed opening 45 along the ash group that mixing axis direction will mix, and is discharged by first feed opening 45.Because being 15~25 degree angles (for example 15 degree angles), blade and axis be provided with, and tilt to first feed opening, 45 directions, axle 42 thrust component intended that are subjected to perpendicular to its axis direction are mixed by ash group under the effect of blade, thereby guaranteeing has time enough that ash group is mixed, the thrust component intended that axle 42 is subjected to being parallel to its axis direction is mixed by ash group under the effect of blade, this component is transported to first feed opening 45 with ash group.Carrying out along with mixer work, flying dust is brought air into mixer, mixer housing internal gas pressure is raise, simultaneously, mixed process also can produce a certain amount of gas, therefore, can guarantee the mixer inside and outside air pressure balance, take place with the situation of avoiding causing flying dust can not fall to cramming smoothly in flying dust import 39 owing to mixer housing internal pressure is excessive by exhaust outlet.

Wherein, flying dust stores curing apparatus 31 also can comprise banded extruder, and banded extruder is used for slivering is pushed by the ash group that mixer is discharged; Banded extruder can comprise housing 47, on housing 47, has second feed opening 48, have in housing 47 inside and to extrude axle 49, an end of banded extruder have central shaft with housing 47 vertical be extruded into female cap 50, be extruded into female cap 50 and comprise six sections 51 that are evenly arranged in its central shaft at most.Block ash is rolled into a ball and is entered banded extruder from second feed opening 48, fall into and extrude axle 49, extrude axle 49 by the transmission device 52 of motor 51 startups by shaft coupling 53 drives and carry out helical rotation, by helical rotation bulk ash group is transported to and is extruded into female cap 50, the section 51 that is extruded into female cap 50 cuts into strip and drops out banded extruder.

In the present embodiment, the slurries of rotary sprayer 4 can be from pulping system 34.Below reaction tower 3 and deduster 5, all conveying worm 36 can be set; Below the incinerator 2 and below the conveying worm 36 scraper plate machine 35 can also be set.The effect of conveying worm and drag conveyor is to carry collected flying dust, and the amount that conveying worm is carried is littler, and the amount that the scraper plate machine is carried more greatly.

The technology of carrying out gas cleaning according to the flue gas purification system of the embodiment of the invention may further comprise the steps (referring to Fig. 1):

The rubbish that S1, material grasping bucket 29 will be stored in the waste deposit pond 30 is delivered to feed hopper 1.

S2, when the rubbish quantity in the feed hopper 1 satisfied incinerator 2 primary combustion consumptions, the valve plate 9 of feed hopper 1 was opened, and rubbish is delivered in the incinerator 2 burned; Produce the flue gas of a large amount of oxyacid materials, and contain harmful hypertoxic products such as bioxin.

S3, the flue gas after burning in the incinerator 2 enters reaction tower 3, and the lime slurry that ejects in reaction tower 3 and in the rotary sprayer 4 reacts, for example soda acid and combined reaction and oxidation reaction; At this moment, the most acid ingredients in the flue gas are removed, but some harmful substance, for example bioxin is also therein.

S4 carries out reacted flue gas and circulates forward along pipeline, sprays the activated carbon powder that enters with pipe side wall and mixes, and activated carbon powder adsorbs the harmful substance in the described flue gas; S5, flue gas flow direction deduster 5.As sack cleaner, flying dust after process deduster 5 is handled is by the deduster detention, fall into ash bucket, and be transported to flying dust and store curing apparatus 31,31 pairs of flying dusts of flying dust storage curing apparatus mix and extrusion molding is handled, flying dust is buried flying dust or other processing after storing 31 pairs of flying dusts processing of curing apparatus; Detach by blower fan 32 through the gas after deduster 5 processing, discharge through chimney 33.

As can be seen from the above embodiments, the putting in the incinerator of the rubbish batch by batch and stage by stage that the flue gas purification system of embodiments of the invention will drop into continuously by feed hopper, this feed hopper is simple in structure, and is durable in use, and operating maintenance is convenient; Spray vaporific lime slurry by rotary sprayer, make flue gas fully mix with lime slurry, gas cleaning is abundant, reaction efficiency is high thereby make, and cost is low; By the zero leakage that the barometric pipe be communicated with atmosphere has guaranteed dirt air chamber and air-purifying chamber in the deduster is set on the by-passing valve; And when Weight plate being set being implemented in deduster and abnormal conditions such as supply gas pressure subcritical value occur, open the automatic protection functions of valve plate fast to guarantee that flue gas is discharged.Spiral rotation by the handwheel that is provided with on the push-pull valve forms the spiral width of cloth with the rectilinear motion of leading screw, it is reciprocating in valve body to have realized driving plate by leading screw, operating personnel rotate handwheel with less power can produce very big linear thrust on the spiral width of cloth, realized opening and closing of push-pull valve; Balance by exhaust outlet assurance mixer inner air and outer air pressure set on the mixer takes place with the situation of avoiding causing flying dust can not fall smoothly and then cram in the flying dust import owing to mixer housing internal pressure is excessive; By the section of evenly arranging on the banded extruder bulk ash is rolled into a ball and to be cut into strip, have the advantage that the putty phenomenon evenly, does not appear in simple in structure, working stability, discharging.Therefore, the flue gas purification system of embodiments of the invention and method are safe, simple to operate, purification is abundant.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.

Claims (13)

1. flue gas purification system comprises:
Feed hopper is used for when rubbish quantity satisfies incinerator primary combustion consumption rubbish being delivered to described incinerator;
Reaction tower is connected with described incinerator by pipeline, and the lime slurry that is used for ejecting in flue gas and the rotary sprayer reacts; And
Deduster is connected with described reaction tower by pipeline, is used for the flue gas after handling through described reaction tower is carried out dust removal process;
Described feed hopper comprises hopper shell, side at described hopper shell is provided with the baffle plate framework, inboard at described baffle plate framework is provided with valve plate, described valve plate is positioned at described feed hopper, the both sides, top of described valve plate are connected with an end of lift arm by rotating shaft, and an end of the other end of described lift arm and piston rod is hinged.
2. flue gas purification system as claimed in claim 1 is characterized in that the pipe side wall that connects described reaction tower and described deduster is equipped with activated carbon eductor, and described activated carbon eductor is used to eject activated carbon powder, with the harmful substance in the absorption flue gas.
3. flue gas purification system as claimed in claim 1, it is characterized in that, described reaction tower comprises tower body, gas approach pipeline, rotary sprayer and air-out smoke pipe, described rotary sprayer is positioned at the top of described tower body, described gas approach pipeline is installed on the below of described rotary sprayer, and described air-out smoke pipe is positioned at the bottom of described tower body.
4. flue gas purification system as claimed in claim 1 is characterized in that described deduster comprises by-passing valve, is used for when supply gas pressure occurring in the described deduster and be lower than preset critical described flue gas being discharged by by-passing valve; Described by-passing valve comprises the bypass adapter, is installed on the barometric pipe that described bypass is taken over outer wall, promote cylinder, coupling assembling, and the bivalve plate, wherein said lifting cylinder is connected in an end of described coupling assembling, and described bivalve plate is connected in the other end of described coupling assembling.
5. flue gas purification system as claimed in claim 4 is characterized in that described coupling assembling comprises interconnective connecting rod and tube connector.
6. flue gas purification system as claimed in claim 5 is characterized in that, on the described tube connector Weight plate is installed.
7. flue gas purification system as claimed in claim 1 is characterized in that, described incinerator and described deduster bottom all have dust inlet, and push-pull valve is installed at described dust inlet place, and described push-pull valve is used to control the circulation of described dust inlet place material.
8. flue gas purification system as claimed in claim 7, it is characterized in that, described push-pull valve comprises valve body, the support that is connected with described valve body, the leading screw that is installed on described internal stent, the plate that is connected with an end of described leading screw, and the handwheel that is connected with the described leading screw other end.
9. flue gas purification system as claimed in claim 1 is characterized in that, described system comprises that also flying dust stores curing apparatus, and the flying dust that is used for that described incinerator, described reaction tower or described deduster produced mixes and extrusion molding is handled.
10. flue gas purification system as claimed in claim 9 is characterized in that, described flying dust stores curing apparatus and comprises mixer, and described mixer is used for flying dust is mixed with cement, chelating agent; Described mixer comprises the mixer housing, and described mixer housing has flying dust import, cement import and chelating agent import; Described mixer enclosure interior has the axle of mixing, at the transmission mechanism that an end is provided with and described mixing axle is connected of described mixer; The feed opening that described mixer housing also has exhaust outlet and is positioned at described exhaust outlet below.
11. flue gas purification system as claimed in claim 10 is characterized in that, the described axle that mixes has the blade that is the setting of 15-25 degree angle with its axis.
12. flue gas purification system as claimed in claim 10 is characterized in that, described flying dust stores curing apparatus and also comprises banded extruder, and described banded extruder is used for slivering is pushed by the ash group that described mixer is discharged; Described banded extruder comprises housing, on described housing, has feed opening, have the axle of extruding in described enclosure interior, an end of described banded extruder have central shaft with described housing vertical be extruded into female cap, the described female cap that is extruded into comprises six sections that are evenly arranged in its central shaft at most.
13. the method that each the described flue gas purification system that utilizes claim 1 to 12 carries out gas cleaning may further comprise the steps:
S1, the rubbish that the material grasping bucket will be stored in the waste deposit pond is delivered to feed hopper;
S2, when the rubbish quantity in the described feed hopper satisfied incinerator primary combustion consumption, the valve plate of described feed hopper was opened, and rubbish is delivered in the described incinerator burned;
S3, the flue gas after burning in the described incinerator enters reaction tower, in reaction tower with rotary sprayer in the lime slurry that ejects react;
S4 carries out described reacted flue gas and flows along pipeline, sprays the activated carbon powder that enters with pipe side wall and mixes, and described activated carbon powder adsorbs the harmful substance in the described flue gas;
S5, described flue gas flow direction deduster by the deduster detention, falls into ash bucket through the solid after the described deduster processing, and is transported to flying dust storage curing apparatus, and flying dust is mixed described flying dust storage curing apparatus and extrusion molding is handled; Extract out by blower fan through the gas after the described deduster processing.
CN2009101626670A 2009-08-17 2009-08-17 Flue gas purifying system and method CN101644437B (en)

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CN2009101626670A CN101644437B (en) 2009-08-17 2009-08-17 Flue gas purifying system and method

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Application Number Priority Date Filing Date Title
CN2009101626670A CN101644437B (en) 2009-08-17 2009-08-17 Flue gas purifying system and method

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CN101644437A CN101644437A (en) 2010-02-10
CN101644437B true CN101644437B (en) 2011-01-05

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CN102008888B (en) * 2010-11-25 2013-01-23 宁波大学 Incineration flue gas purification device
CN104028528A (en) * 2013-03-04 2014-09-10 上海科锐驰化工装备技术有限公司 Solidification apparatus for fly ash produced in power generation through burning of municipal waste
CN104667711A (en) * 2014-11-25 2015-06-03 南通新世纪机电有限公司 Industrial air drying purifying device
CN106139872A (en) * 2016-08-14 2016-11-23 安徽盛运环保(集团)股份有限公司 A kind of flue gas of refuse burning processing means
CN107655008A (en) * 2017-09-01 2018-02-02 佛山市南海绿电再生能源有限公司 A kind of flue gas processing method and system for reducing waste incineration Zhong content of dioxin

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