CN104984606B - A kind of multitower many kilns common type synchronized desulfuring dust pelletizing system and method - Google Patents
A kind of multitower many kilns common type synchronized desulfuring dust pelletizing system and method Download PDFInfo
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Abstract
The invention discloses a kind of multitower many kilns common type synchronized desulfuring dust pelletizing system and method, it includes flue, kiln smoke extractor, spraying tower system, blender, dusting device, alkali liquor humidification system, dust-removing desulfurating apparatus and electrical apparatus control system；Described blender is connected with kiln smoke extractor, spraying tower system and alkali liquor humidification system by flue respectively；Described dusting device is connected with blender；Described dust-removing desulfurating apparatus is connected with blender by flue；Described electrical apparatus control system is connected with above-mentioned each parts respectively；Described kiln smoke extractor includes multiple smoke evacuation kiln and flue gas is delivered to most the positive pressure fan of blender；Described positive pressure fan is by the flue gas of flue extraction smoke evacuation kiln；Described spraying tower system includes multiple spray tower.The present invention is integrated with cleaner by desulphurization plant, the mode of dedusting after the first desulfurization of employing so that after dedusting, the little granule of the sulfide of related desulfurization is removed by sack cleaner together.
Description
Technical field
The present invention relates to the dust removing desulphurization plant field of waste gas, in particular a kind of multitower many kilns common type synchronized desulfuring dust pelletizing system and method.
Background technology
Along with the development of society, the environmental consciousness of people is increasingly stronger, and the increasing of Environmental protection, and country is the highest for industrial gas emission standard；So existing waste gas emission treatment requires the highest, for pottery manufacturing enterprise, the exhaust emission that waste gas discharge produces is more, produces substantial amounts of dust and sulfur-bearing composition in mist projection granulating tower and kiln；So waste gas needs first to process before discharge.The equipment of existing dedusting and desulfurization is separate, is usually and uses mist projection granulating tower flue gas bag-type dust and two equipment of desulfurizing tower, and after using first dedusting, the mode of desulfurization carries out exhaust-gas treatment；And be a kiln or the corresponding dust-removal cloth-bag of spray tower, and existing sulfur method is wet desulphurization, uses calcium bicarbonate as desulphurization reaction thing；Therefore, the corresponding dust settling pocket of one mist projection granulating tower of existing emission-control equipment, and after each dust settling pocket, it is required for the blower fan of a negative pressure, owing to existing ceramics factory place is limited, causing whole pipe network system complicated, so the resistance of whole system is excessive, fan energy consumption is high；Desulfurization after first dedusting, the desulfurizing agent that during follow-up desulfurization, flue gas steam is taken out of, when dust detects, is dried crystallization and can be erroneously interpreted as dust, cause dust exceeding (the independent desulfurization of kiln exists the situation that dust easily exceeds standard too)；Cleaner start-stop stops simultaneously, and when stopping tower and switching to bypass flue gas, the steam in equipment accumulates in inside, easily causes equipment corrosion and accelerates, cause service life of equipment to shorten, and the when that tower work being opened by spray tower, temperature is higher, easily burns out dust-removal cloth-bag.
Therefore, existing technology awaits development and improves.
Summary of the invention
It is an object of the invention to provide a kind of multitower many kilns common type synchronized desulfuring dust pelletizing system and method, it is intended to solve existing pottery manufacture flue gas separate with the equipment of dust-removal and desulfurizing in waste gas, one the most corresponding sack cleaner of spray tower, flue gas transport resistance is excessive, cause fan energy consumption high, and spraying is when opening tower or stop tower, have to switch over bypass channel, steam is caused to accumulate in equipment, easily etching apparatus and sack cleaner, and also can produce the little granule of a part of sulfide after desulfurization after elder generation's dedusting, increase the technical problem of dust emission.
The technical scheme is that a kind of multitower kiln common type synchronized desulfuring dust pelletizing system, it includes flue, kiln smoke extractor, spraying tower system, blender, dusting device, alkali liquor humidification system, dust-removing desulfurating apparatus and electrical apparatus control system；Described blender is connected with kiln smoke extractor, spraying tower system and alkali liquor humidification system by flue respectively；Described dusting device is connected with blender；Described dust-removing desulfurating apparatus is connected with blender by flue；Described electrical apparatus control system is connected with above-mentioned each parts respectively；Described kiln smoke extractor includes multiple smoke evacuation kiln and flue gas is delivered to most the positive pressure fan of blender；Described positive pressure fan is by the flue gas of flue extraction smoke evacuation kiln；Described spraying tower system includes multiple spray tower.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described spraying tower system also include the cyclone dust extractor of a rough dusting and one increase blower fan for extracting the spraying of waste gas, described spray tower increases the blower fan waste gas by flue extraction spray tower.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described dusting device includes that one is placed the powder cabin of desulfurization powder and one for by the blower fan that dusts in desulfurization powder spray feed to blender.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described alkali liquor humidification system includes the alkali liquor pond for holding fresh water (FW) alkali liquor, described alkali liquor pond is connected with the fresh water (FW) port of export by pipeline, and the flue that described alkali liquor pond is immersed in fresh water (FW) alkali liquor by a part is connected with blender.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described dust-removing desulfurating apparatus includes sack cleaner and waste recovery tank, and described waste recovery tank connects the bottom of sack cleaner by pipeline.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described electrical apparatus control system includes electric appliance control box and for monitoring the chimney of discharge waste gas；The on-line monitoring device being connected with electric appliance control box it is provided with in described chimney.
Described multitower kiln common type synchronized desulfuring dust pelletizing system, wherein, described sack cleaner connects with chimney, can also install a negative-pressure air fan between chimney and sack cleaner, for the waste gas after the middle dust-removal and desulfurizing of sack cleaner or fume extraction out being discharged.
A kind of method of multitower kiln common type synchronized desulfuring dedusting, wherein, comprises the following steps:
Step A, by blower fan, the waste gas in multiple smoke evacuation kilns and multiple spray tower and flue gas are blown into blender；
Kiln smoke evacuation is humidified by step B, alkali liquor humidification system, and desulfurization powder spray feed to blender is carried out mixing and reacting with flue gas and waste gas by the powder cabin placing desulfurization powder by the blower fan that dusts；
Step C, the mixed flue gas of blender and waste gas spray feed to sack cleaner, through mixing and reacted flue gas and waste gas by sack cleaner carry out dedusting and the little granule formed by desulfurization powder or dust with smoke reaction together with filter out, then reclaim；
Step D, the flue gas after sack cleaner dust-removal and desulfurizing and waste gas are discharged into chimney, are then discharged to the external world.
The method of described multitower kiln common type synchronized desulfuring dedusting, wherein, in described step B, is magnesium oxide dry desulfurization method by mixing with flue gas and waste gas in desulfurization powder spray feed to blender and reacting the sulfur method used；The reaction equation of described magnesium oxide dry desulfurization method is: MgO+H2O=Mg(OH) 2, Mg(OH) 2+SO2=MgSO3+H2O, or Mg(OH) 2+SO3=MgSO4+H2O.
The method of described multitower kiln common type synchronized desulfuring dedusting, wherein, described magnesium oxide dry desulfurization method use magnesium oxide powder carry out magnesium nitrite and the sulphation magnesium obtained after desulfurization is reacted with the sulfur dioxide in flue gas and waste gas or sulfur trioxide, it is all for manufacturing pottery and main material, it is possible to by waste recovery pipeline, these waste materials are recovered to waste recovery tank again.
Beneficial effects of the present invention: the present invention is by by one system of integrated with cleaner for desulphurization plant composition, after using first desulfurization, the mode of dedusting carries out desulfurization and dedusting, after making dedusting, the little granule of the sulfide of related desulfurization is removed by sack cleaner together, and use magnesium oxide dry desulfurization, desulfurization after cure thing again to recycle；Mix with flue gas through desulfurizing agent and react dust, dust or the granule produced after sack cleaner, can once cross fall the sulfur-bearing goods and materials in flue gas or dust-filtering；The present invention uses the many kilns of multitower to share a sack cleaner simultaneously, first, it is transported in blender mix by the flue gas in multiple kilns and multiple spray tower, during so central single spray tower needs stop tower or open tower, without flue is switched to by-pass line, all of flue gas only can be pooled in blender, from without carrying out dedusting in being delivered directly to sack cleaner, sack cleaner is burnt out by the high temperature produced when avoiding single column to stop tower, or when stopping tower, when being switched to bypass, moisture in flue gas or will not collect in sack cleaner, cause sack cleaner internal or the excess moisture of other equipment, thus etching apparatus, shorten the life-span of sack cleaner and the life-span of other equipment；Flue gas in multiple spray towers and kiln is being pooled in blender, then desulfurization powder spirt blender will carry out hybrid reaction with flue gas, in addition, also have an alkali liquor humidification system that the flue gas in blender is humidified, enough moisture is provided, it is simple to the sulphur-containing substance in desulfurization powder and flue gas reacts for flue gas；By arranging positive pressure fan at the outfan of multiple spray towers and multiple kiln, flue gas or waste gas are jetted in blender, so saving blower fan quantity in the middle of a whole set of dust removing desulphurization plant, after collecting, it is being transported to sack cleaner, it is possible to reduce the electric energy loss of blower fan；After blender mixed flue gas and desulfurization powder, it is being transported to sack cleaner, make flue gas can fully enter sack cleaner, carry out unified desulfurization and dedusting, avoid flue gas and cannot all be discharged to desulfurizing tower process, or partial fume is at workshop internal diffusion, cause the heaviest situation of taste of sulfur dioxide in workshop；And the desulfurization powder used in blender is magnesia powder, after reacting with the sulfide in flue gas, the waste material formed is the main material manufactured as pottery, reuse it is possible to reclaim, and desulfurization powder is to be jetted magnesia powder by the blower fan that dusts to mix with flue gas in blender；Use desulfurization powder so unified, save the usage amount of desulfurization powder, thus reduce the cost of dust-removal and desulfurizing, reclaim waste material and reuse, the input cost of chemical industry material can be reduced；Use magnesium oxide dry desulfurization, except the spray system of wet desulphurization, eliminate water pump, reduce the usage amount of power consumption, the problem decreasing line clogging, reduce the fault rate of equipment.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the method flow diagram of the desulfurization and dedusting of the present invention.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.
As shown in Figure 1, the invention discloses a kind of multitower kiln common type synchronized desulfuring dust pelletizing system, it includes flue 8, kiln smoke extractor 1, spraying tower system 2, blender 3, dusting device 4, alkali liquor humidification system 5, dust-removing desulfurating apparatus 6 and electrical apparatus control system 7；Described blender 3 is connected with kiln smoke extractor 1, spraying tower system 2 and alkali liquor humidification system 5 by flue 8 respectively；Described dusting device 4 is connected with blender 3；Described dust-removing desulfurating apparatus 6 is connected with blender 3 by flue 8；Described electrical apparatus control system 7 is connected with above-mentioned each parts respectively；Described kiln smoke extractor 1 includes multiple smoke evacuation kiln 11 and flue gas is delivered to most the positive pressure fan 12 of blender 3；Described positive pressure fan 12 is by the flue gas of flue 8 extraction smoke evacuation kiln 11；Described spraying tower system 2 includes multiple spray tower 21.
nullAfter using said structure，The present invention is by forming the equipment being used in conjunction with desulfurization and dedusting by dust-removing desulfurating apparatus 6 with multiple spray towers 21 and kiln smoke extractor 1，It is transported in blender 3 mix by the flue gas in multiple kilns and multiple spray tower 21，During so central single spray tower 21 needs stop tower or open tower，Without flue is switched to by-pass line，All of flue gas only can be pooled in blender 3，From without carrying out dedusting in being delivered directly to sack cleaner，Sack cleaner is burnt out by the high temperature produced when avoiding single column to stop tower，Or when stopping tower，When being switched to bypass，Moisture in flue gas or will not collect in sack cleaner，Cause sack cleaner internal or the excess moisture of other equipment，Thus etching apparatus，Shorten the life-span of sack cleaner and the life-span of other equipment；Flue gas in multiple spray towers and kiln is being pooled in blender, then desulfurization powder spirt blender will carry out hybrid reaction with flue gas, sulfur-bearing dust after desulfurization powder and smoke reaction or particle filtering are fallen by last property, ensure that stable and discharge flue gas the dustiness of discharge flue gas reduces, avoiding the mode of desulfurization after the first dedusting of tradition, some dust produced in last desulfurization stage cause the dust in flue gas to increase.
Spraying tower system 2 in the present invention also include the cyclone dust extractor 22 of a rough dusting and one increase blower fan 23 for extracting the spraying of waste gas, described spray tower is increased blower fan 23 and is extracted the waste gas of spray tower 21 by flue 8；By rough dusting, the big dust particle in flue gas is first filtered out, it is simple to flue gas carries out mixing and reacting with desulfurization powder at blender 3.
The dusting device of the present invention includes that one is placed the powder cabin 41 of desulfurization powder and one for by the blower fan 42 that dusts in desulfurization powder spray feed to blender 3；By dusting, desulfurization powder can quickly be jetted down in blender 3 by blower fan 42, carries out mixing and reacting with flue gas, decreases the usage amount of desulfurization powder.
In real work, the alkali liquor humidification system 5 of the present invention includes the alkali liquor pond 51 for holding fresh water (FW) alkali liquor, described alkali liquor pond 51 is connected with the fresh water (FW) port of export by pipeline, and the flue that described alkali liquor pond 51 is immersed in fresh water (FW) alkali liquor by a part is connected with blender 3.
In real work, the dust-removing desulfurating apparatus 6 of the present invention includes that sack cleaner 61 and waste recovery tank 62, described waste recovery tank 62 connect the bottom of sack cleaner 62 by pipeline；By by waste recovery, reuse, alleviate the cost manufacturing pottery.
Furtherly, described electrical apparatus control system 7 includes electric appliance control box (not shown) and for monitoring the chimney 71 of discharge waste gas；The on-line monitoring device 710 being connected with electric appliance control box it is provided with in described chimney 71；By this on-line monitoring device 710 can constantly monitor discharge flue gas discharge in various parameters, if the most up to standard when can in time equipment be keeped in repair.
Furtherly, described sack cleaner 61 connects with chimney 71, can also install a negative-pressure air fan between chimney 71 and sack cleaner 61, for the waste gas after the middle dust-removal and desulfurizing of sack cleaner or fume extraction out being discharged.
As in figure 2 it is shown, a kind of method that the invention discloses multitower kiln common type synchronized desulfuring dedusting, it comprises the following steps:
Step A, by blower fan, the waste gas in multiple smoke evacuation kilns and multiple spray tower and flue gas are blown into blender；
Kiln smoke evacuation is humidified by step B, alkali liquor humidification system, and desulfurization powder spray feed to blender is carried out mixing and reacting with flue gas and waste gas by the powder cabin placing desulfurization powder by the blower fan that dusts；
Step C, the mixed flue gas of blender and waste gas spray feed to sack cleaner, through mixing and reacted flue gas and waste gas by sack cleaner carry out dedusting and the little granule formed by desulfurization powder or dust with smoke reaction together with filter out, then reclaim；
Step D, the flue gas after sack cleaner dust-removal and desulfurizing and waste gas are discharged into chimney, are then discharged to the external world.
Furtherly, in described step B, it is magnesium oxide dry desulfurization method by desulfurization powder spray feed to blender mixing with flue gas and waste gas and reacting the sulfur method used；The reaction equation of described magnesium oxide dry desulfurization method is: MgO+H2O=Mg(OH) 2, Mg(OH) 2+SO2=MgSO3+H2O, or Mg(OH) 2+SO3=MgSO4+H2O.
Furtherly, described magnesium oxide dry desulfurization method use magnesium oxide powder carry out magnesium nitrite and the sulphation magnesium obtained after desulfurization is reacted with the sulfur dioxide in flue gas and waste gas or sulfur trioxide, it is all for manufacturing pottery and main material, it is possible to by waste recovery pipeline, these waste materials are recovered to waste recovery tank again.
The present invention is by by one system of integrated with cleaner for desulphurization plant composition, after using first desulfurization, the mode of dedusting carries out desulfurization and dedusting, after making dedusting, the little granule of the sulfide of related desulfurization is removed by sack cleaner together, and use magnesium oxide dry desulfurization, desulfurization after cure thing again to recycle；Mix with flue gas through desulfurizing agent and react dust, dust or the granule produced after sack cleaner, can once cross fall the sulfur-bearing goods and materials in flue gas or dust-filtering；The present invention uses the many kilns of multitower to share a sack cleaner simultaneously, first, it is transported in blender mix by the flue gas in multiple kilns and multiple spray tower, during so central single spray tower needs stop tower or open tower, without flue is switched to by-pass line, all of flue gas only can be pooled in blender, from without carrying out dedusting in being delivered directly to sack cleaner, sack cleaner is burnt out by the high temperature produced when avoiding single column to stop tower, or when stopping tower, when being switched to bypass, moisture in flue gas or will not collect in sack cleaner, cause sack cleaner internal or the excess moisture of other equipment, thus etching apparatus, shorten the life-span of sack cleaner and the life-span of other equipment；Flue gas in multiple spray towers and kiln is being pooled in blender, then desulfurization powder spirt blender will carry out hybrid reaction with flue gas, in addition, also have an alkali liquor humidification system that the flue gas in blender is humidified, enough moisture is provided, it is simple to the sulphur-containing substance in desulfurization powder and flue gas reacts for flue gas；By arranging positive pressure fan at the outfan of multiple spray towers and multiple kiln, flue gas or waste gas are jetted in blender, so saving blower fan quantity in the middle of a whole set of dust removing desulphurization plant, after collecting, it is being transported to sack cleaner, it is possible to reduce the electric energy loss of blower fan；After blender mixed flue gas and desulfurization powder, it is being transported to sack cleaner, make flue gas can fully enter sack cleaner, carry out unified desulfurization and dedusting, avoid flue gas and cannot all be discharged to desulfurizing tower process, or partial fume is at workshop internal diffusion, cause the heaviest situation of taste of sulfur dioxide in workshop；And the desulfurization powder used in blender is magnesia powder, after reacting with the sulfide in flue gas, the waste material formed is the main material manufactured as pottery, reuse it is possible to reclaim, and desulfurization powder is to be jetted magnesia powder by the blower fan that dusts to mix with flue gas in blender；Use desulfurization powder so unified, save the usage amount of desulfurization powder, thus reduce the cost of dust-removal and desulfurizing, reclaim waste material and reuse, the input cost of chemical industry material can be reduced；Use magnesium oxide dry desulfurization, except the spray system of wet desulphurization, eliminate water pump, reduce the usage amount of power consumption, the problem decreasing line clogging, reduce the fault rate of equipment.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a multitower kiln common type synchronized desulfuring dust pelletizing system, it is characterised in that include flue, kiln smoke extractor, spraying tower system, blender, dusting device, alkali liquor humidification system, dust-removing desulfurating apparatus and electrical apparatus control system；Described blender is connected with kiln smoke extractor, spraying tower system and alkali liquor humidification system by flue respectively；Described dusting device is connected with blender；Described dust-removing desulfurating apparatus is connected with blender by flue；Described electrical apparatus control system is connected with above-mentioned each parts respectively；Described kiln smoke extractor includes multiple smoke evacuation kiln and flue gas is blown into the positive pressure fan of blender；Described positive pressure fan is by the flue gas of flue extraction smoke evacuation kiln；Described spraying tower system includes multiple spray tower.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 1, it is characterized in that, described spraying tower system also include the cyclone dust extractor of a rough dusting and one increase blower fan for extracting the spraying of waste gas, described spraying increases the blower fan waste gas by flue extraction spray tower.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 1, it is characterised in that described dusting device includes that one is placed the powder cabin of desulfurization powder and one for by the blower fan that dusts in desulfurization powder spray feed to blender.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 3, it is characterized in that, described alkali liquor humidification system includes the alkali liquor pond for holding fresh water (FW) alkali liquor, described alkali liquor pond is connected with the fresh water (FW) port of export by pipeline, and the flue that described alkali liquor pond is immersed in fresh water (FW) alkali liquor by a part is connected with blender.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 1, it is characterised in that described dust-removing desulfurating apparatus includes sack cleaner and waste recovery tank, described waste recovery tank connects the bottom of sack cleaner by pipeline.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 5, it is characterised in that described electrical apparatus control system includes electric appliance control box and for monitoring the chimney of discharge waste gas；The on-line monitoring device being connected with electric appliance control box it is provided with in described chimney.
Multitower kiln common type synchronized desulfuring dust pelletizing system the most according to claim 6, it is characterized in that, described sack cleaner connects with chimney, one negative-pressure air fan is also installed between chimney and sack cleaner, for the waste gas after sack cleaner dust-removal and desulfurizing or fume extraction out being discharged.
8. the method for a multitower kiln common type synchronized desulfuring dedusting, it is characterised in that comprise the following steps:
Step A, by blower fan, the waste gas in multiple smoke evacuation kilns and multiple spray tower and flue gas are blown into blender；
Kiln smoke evacuation is humidified by step B, alkali liquor humidification system, and desulfurization powder spray feed to blender is carried out mixing and reacting with flue gas and waste gas by the powder cabin placing desulfurization powder by the blower fan that dusts；
Step C, the mixed flue gas of blender and waste gas spray feed to sack cleaner, through mixing and reacted flue gas and waste gas by sack cleaner carry out dedusting and the little granule formed by desulfurization powder or dust with smoke reaction together with filter out, then reclaim；
Step D, the flue gas after sack cleaner dust-removal and desulfurizing and waste gas are discharged into chimney, are then discharged to the external world.
The method of multitower kiln common type synchronized desulfuring dedusting the most according to claim 8, it is characterised in that in described step B, is magnesium oxide dry desulfurization method by mixing with flue gas and waste gas in desulfurization powder spray feed to blender and reacting the sulfur method used；The reaction equation of described magnesium oxide dry desulfurization method is: MgO+H2O=Mg(OH)2, Mg(OH)2+SO2=MgSO3+H2O, or Mg(OH)2+SO3=MgSO4+H2O。
The method of multitower kiln common type synchronized desulfuring dedusting the most according to claim 9, it is characterized in that, described magnesium oxide dry desulfurization method use magnesium oxide powder carry out magnesium nitrite and the sulphation magnesium obtained after desulfurization is reacted with the sulfur dioxide in flue gas and waste gas or sulfur trioxide, it is all for manufacturing pottery and main material, it is possible to by waste recovery pipeline, these waste materials are recovered to waste recovery tank again.
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| CN106318514A (en) * | 2016-08-30 | 2017-01-11 | 温州乐享科技信息有限公司 | Coal combustion method |
| CN106322422A (en) * | 2016-08-30 | 2017-01-11 | 温州乐享科技信息有限公司 | Coal burning method |
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