CN204356237U - With the quality coal in cement kiln systems of grate-cooler disposing sludge - Google Patents
With the quality coal in cement kiln systems of grate-cooler disposing sludge Download PDFInfo
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- CN204356237U CN204356237U CN201420808269.8U CN201420808269U CN204356237U CN 204356237 U CN204356237 U CN 204356237U CN 201420808269 U CN201420808269 U CN 201420808269U CN 204356237 U CN204356237 U CN 204356237U
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- 239000010802 sludge Substances 0.000 title claims abstract description 207
- 239000004568 cement Substances 0.000 title claims abstract description 100
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 78
- 239000011236 particulate material Substances 0.000 claims abstract description 20
- 239000008187 granular material Substances 0.000 claims description 55
- 238000002156 mixing Methods 0.000 claims description 32
- 238000001035 drying Methods 0.000 claims description 31
- 239000000126 substance Substances 0.000 claims description 25
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 24
- 239000011707 mineral Substances 0.000 claims description 24
- 239000010865 sewage Substances 0.000 claims description 21
- 230000004888 barrier function Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 description 45
- 235000010755 mineral Nutrition 0.000 description 23
- 239000002028 Biomass Substances 0.000 description 16
- 241000196324 Embryophyta Species 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- -1 then Substances 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 150000002240 furans Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a kind of quality coal in cement kiln systems of grate-cooler disposing sludge.Described quality coal in cement kiln systems comprises cement kiln and grate-cooler, described cement kiln is communicated with by kiln head cover with grate-cooler, described kiln head cover is communicated with described cement kiln by tertiary air pipeline, described kiln head cover is provided with sludge inlet, and described sludge inlet is communicated with dewatered sludge particulate material storehouse by conveying device of dry sludge particles.Quality coal in cement kiln systems of the present utility model can improve the disposal scale of mud greatly, day disposes scale and can reach 200 ton per days.
Description
Technical field
The utility model relates to a kind of disposal system of mud, particularly relates to a kind of quality coal in cement kiln systems of grate-cooler disposing sludge.
Background technology
Cement industry is one of China industrial circle energy consumption rich and influential family, accounts for 6.5% of national total energy consumption.Cement industry fuel consumption accounts for 75% of cement industry total energy consumption, and coal accounts for nearly 100% of total fuel consumption.Seek to use alternative fuel to meet the strategy of China's energy structure optimizing and the displacement of Cement industry production capacity.
Along with the construction of urban wastewater treatment facility, sewage plant sludge and sewage sludge become a new Urban Environmental Problem.Moisture percentage in sewage sludge about 80% after Sewage Plant mechanical dehydration.The conventional method of disposal such as landfill, burning, compost is difficult to the environmental emission standard and the resource utilization needs that adapt to increasingly stringent.Because the main chemical compositions of mud comprises SiO
2, Fe
20
3, and A1
2o
3, more similar with the siliceous raw material in cement raw material, can be used for Some substitute siliceous raw material in theory prepares burden, and its calorific value can be used as fuel and uses.Therefore utilizing cement kiln synergic processing town sewage plant mud, is a kind of economy, feasible recycling mode.But concerning cement kiln synergic processing mud utilizes, moisture, calorific value and physical dimension are the important factors affecting cement kiln mass-producing and stability disposing sludge.Wet sludge calorific value is low, directly enters kiln and can form floc sedimentation shape structure, causes cement kiln temperature to decline and worsens combustion conditions.Affect the yield and quality of grog.Moisture content is high in addition, will increase the load of exhaust gas volumn and exhaust-gas treatment facilities, easily produce foul gas.
Domestic and international cement kiln disposing sludge is all that after utilizing mummification, single-point enters kiln technology.In prior art, be first mud is transported to cement mill from Sewage Plant with the main common ground of cement kiln disposing sludge, recycling cement kiln waste heat carries out ovens dry deodorizing to mud and directly enters decomposing furnace and burn, due to mud conglomeration and skewness, dispose small, and energy consumption is higher.Zaozhuang, Shandong Province Zhong Lian cement limited liability company builds up dewatered sludge (water ratio about 75%) the demonstration line that 60 ton per days dispose Zaozhuang Sewage Plant.
Utility model content
A technical problem to be solved in the utility model is to provide a kind of method of cement kiln disposing sludge, and the method can improve the disposal scale of mud greatly.
Another technical problem to be solved in the utility model is to provide a kind of quality coal in cement kiln systems of grate-cooler disposing sludge, and this system can improve the disposal scale of mud greatly.
With regard to method, in order to solve an above-mentioned technical problem, the utility model method of cement kiln disposing sludge, first wet mud is made dewatered sludge particle, again dewatered sludge particle is heated by the high temperature chamotte ejected from cement kiln, impel dewatered sludge particle burning, finally, flue gas is sent into cement kiln tertiary air system, the mud granule after burning and the grog after heat release are sent into cement mill system.
Described by dewatered sludge particle by the heating of the high temperature chamotte that ejects from cement kiln, impel the process of dewatered sludge particle burning to complete in grate-cooler; Described high temperature chamotte escapes and enter in grate-cooler from cement kiln and is layered on grate, described dewatered sludge particle is delivered in grate-cooler and is layered on above described high temperature chamotte, under the effect of blower fan, the high temperature air ejected from high temperature chamotte and dewatered sludge particle contacts, impel dewatered sludge particle burning; And/or, by the dewatered sludge particle delivered in cement-kiln grate-cooler with from cement kiln, the high temperature chamotte escaped and enter in grate-cooler is layered in grate after mixing, under the effect of blower fan, the high temperature air ejected from high temperature chamotte and dewatered sludge particle contacts, impel dewatered sludge particle burning.
Enter to described dewatered sludge uniform particles the sludge inlet on kiln head cover, described kiln head cover is communicated with described cement kiln and described grate-cooler.
Temperature in described grate-cooler, more than 1300 degree, is in aerobic state in described grate-cooler.
Described dewatered sludge particle of being made by wet mud is first by adding mineral substance and/or biomass in the wet mud of Sewage Plant or water drain, moisture in wet mud is reduced to 40-50%, again the mud after reduction moisture is made wet mud granule, then, mud granule ventilation mummification of wetting forms dewatered sludge particle.
Describedly moisture in wet mud is reduced to 40-50% carries out in mud mixing machine, described wet mud is squeezed in described mud mixing machine by sludge pump, described mineral substance is flyash and/or unslaked lime, described mineral substance adds in described mud mixing machine by mineral substance measuring apparatus, describedly make wet mud granule realized reducing the mud after moisture by sludge granulator, describedly send into described sludge granulator by reducing the mud after moisture by rotary conveyor, described wet mud granule ventilation mummification to be realized by mud granule drying device, described wet mud granule sends into described mud granule drying device by forklift, the moisture content of described dewatered sludge particle is 10%, described dewatered sludge particle is transported in the dewatered sludge particulate material storehouse in cement mill by dewatered sludge particulate transportation car.
Described biomass are garbage waste materials, and described biomass are added in described mud mixing machine by biomass measuring apparatus.
The method of the utility model cement kiln disposing sludge compared with prior art has following beneficial effect.
1, wet mud is first made dewatered sludge particle owing to have employed by the technical program, again by the high temperature chamotte heating of dewatered sludge particle by ejecting from cement kiln, impel dewatered sludge particle burning, finally, flue gas is sent into cement kiln tertiary air system, the mud granule after burning and the grog after heat release are sent into the technique means of cement mill system, so, greatly can improve the disposal scale of mud, day dispose scale and can reach 200 ton per days.
2, dewatered sludge particle describedly to be contacted with high temperature air by the heating of the high temperature chamotte that ejects from cement kiln owing to have employed by the technical program, the process of dewatered sludge particle burning is impelled to be the technique means completed in grate-cooler, so, directly dewatered sludge particle can be passed through the process of high temperature grate-cooler, solve parameter influence mass transport and the clean-burning problems such as the moisture of prior art, size, conglomeration, greatly reduce energy consumption; Because separate unit grate-cooler processing power is large, sludge disposal amount is less relative to it, thus little to cement kiln influence on system operation; Realize waste zero release; Cement kiln does not produce flying dust and slag, does not have the problem of secondary pollution; Add mud from grate-cooler, can delivery technology be simplified; Conventional mechanical conveying can meet a large amount of process, does not worry air and cloth assignment problem.
3, the technical program owing to entering the technique means of the sludge inlet on kiln head cover with have employed described dewatered sludge uniform particles, so, to raw material calorific value and water adaptability wide, due to grate-cooler high temperature, aerobic, and the residence time is long, higher water-containing sludge can be adapted to; Greatly can improve the disposal efficiency to dewatered sludge particle and quality.
4, the technical program is owing to have employed temperature in described grate-cooler more than 1300 degree, the technique means of aerobic state is in described grate-cooler, so, mud good permeability after drying particles, grate-cooler can fully realize burning, can thoroughly eliminate the objectionable impurities such as Dioxins, furans, and these objectionable impuritiess there will not be the hidden danger of regeneration; Significantly can reduce the acid gas emissions such as cement kiln oxynitride oxysulfide.
5, the technical program is first by adding mineral substance and/or biomass in the wet mud of Sewage Plant or water drain owing to have employed described dewatered sludge particle of being made by wet mud, moisture in wet mud is reduced to 40-50%, again the mud after reduction moisture is made wet mud granule, then, mud granule ventilation mummification of wetting forms dewatered sludge granule technology means, so, the moisture in mud can be reduced, be conducive to the transport to mud, improve the calorific value of mud, for the disposal amount improving mud creates favourable condition, enhance the adaptability of cement kiln to sludge disposal, by sewage plant sludge is mixed preliminary precipitation and drying particles precipitation with additive, reach low cost precipitation, the cement kiln achieving dewatered sludge is disposed, because mud with the addition of the additive such as mineral substance, biomass, both reduce moisture and also inhibits foul smell, decrease deodoration system investment.
6, moisture in wet mud is describedly reduced to 40-50% owing to have employed and carries out in mud mixing machine by the technical program, described wet mud is squeezed in described mud mixing machine by sludge pump, described mineral substance is flyash and/or unslaked lime, described mineral substance adds in described mud mixing machine by mineral substance measuring apparatus, describedly make wet mud granule realized reducing the mud after moisture by sludge granulator, describedly send into described sludge granulator by reducing the mud after moisture by rotary conveyor, described wet mud granule ventilation mummification to be realized by mud granule drying device, described wet mud granule sends into described mud granule drying device by forklift, the moisture content of described dewatered sludge particle is 10%, described dewatered sludge particle is transported to the technique means in the dewatered sludge particulate material storehouse in cement mill by dewatered sludge particulate transportation car, so, so, substantially reduce the investment of equipment, be conducive to applying by cement kiln disposing sludge method.
7, the technical program is owing to have employed the technique means that described biomass are garbage waste materials, so, the cost of sludge pretreatment can be greatly reduced, increase the calorific value of mud further.
With regard to system, in order to solve another above-mentioned technical problem, the utility model quality coal in cement kiln systems of grate-cooler disposing sludge, comprise cement kiln and grate-cooler, described cement kiln is communicated with by kiln head cover with grate-cooler, described kiln head cover is communicated with described cement kiln by tertiary air pipeline, and described kiln head cover is provided with sludge inlet, and described sludge inlet is communicated with dewatered sludge particulate material storehouse by conveying device of dry sludge particles.
Described conveying device of dry sludge particles comprises pan feeding chute and horizontal conveyer, the lower end of described pan feeding chute is positioned at described sludge inlet, top in the middle part of described pan feeding chute is provided with air valve, the discharge port of described horizontal conveyer is positioned at the top of described pan feeding chute upper end down, dewatered sludge particle metering apparatus is provided with between the discharge port of described horizontal conveyer and the upper end of described pan feeding chute, the opening for feed of described horizontal conveyer is positioned at described dewatered sludge particulate material storehouse upward, grab mechanisms is provided with in described dewatered sludge particulate material storehouse, blanking place of described grab mechanisms is positioned at the top of the opening for feed of described horizontal conveyer.
The quality coal in cement kiln systems of described grate-cooler disposing sludge also comprises the mud mixing machine, sludge granulator and the mud granule drying device that are arranged on Sewage Plant, described mud mixing machine is configured with sludge pump and mineral substance measuring apparatus, rotary conveyor is configured with between described mud mixing machine and described sludge granulator, be configured with forklift between described sludge granulator and described mud granule drying device, between described Sewage Plant and cement mill, be configured with dewatered sludge particulate transportation car; Described mud granule drying device comprises the barrier of rectangle, is provided with multiple stage blower fan below the barrier of described rectangle.
The quality coal in cement kiln systems of the utility model grate-cooler disposing sludge compared with prior art has following beneficial effect.
1, the technical program is provided with sludge inlet owing to have employed on described kiln head cover, the technique means that described sludge inlet is communicated with dewatered sludge particulate material storehouse by conveying device of dry sludge particles, so, greatly can improve the disposal scale of mud, day dispose scale and can reach 200 ton per days; Directly dewatered sludge particle can be passed through the process of high temperature grate-cooler, solve parameter influence mass transport and the clean-burning problems such as the moisture of prior art, size, conglomeration, greatly reduce energy consumption; Because separate unit grate-cooler processing power is large, sludge disposal amount is less relative to it, thus little to cement kiln influence on system operation; Realize waste zero release; Cement kiln does not produce flying dust and slag, does not have the problem of secondary pollution; Add mud from grate-cooler, can delivery technology be simplified; Conventional mechanical conveying can meet a large amount of process, does not worry air and cloth assignment problem.
2, the technical program comprises pan feeding chute and horizontal conveyer owing to have employed described conveying device of dry sludge particles, the lower end of described pan feeding chute is positioned at described sludge inlet, top in the middle part of described pan feeding chute is provided with air valve, the discharge port of described horizontal conveyer is positioned at the top of described pan feeding chute upper end down, dewatered sludge particle metering apparatus is provided with between the discharge port of described horizontal conveyer and the upper end of described pan feeding chute, the opening for feed of described horizontal conveyer is positioned at described dewatered sludge particulate material storehouse upward, grab mechanisms is provided with in described dewatered sludge particulate material storehouse, blanking place of described grab mechanisms is positioned at the technique means of the top of the opening for feed of described horizontal conveyer, so, production technique is simple, facility investment is few, the dewatered sludge solving prior art directly enters decomposing furnace blocking, the problems such as incomplete combustion.
3, the technical program also comprises the mud mixing machine being arranged on Sewage Plant due to the quality coal in cement kiln systems that have employed described grate-cooler disposing sludge, sludge granulator and mud granule drying device, described mud mixing machine is configured with sludge pump and mineral substance measuring apparatus, rotary conveyor is configured with between described mud mixing machine and described sludge granulator, forklift is configured with between described sludge granulator and described mud granule drying device, the technique means of dewatered sludge particulate transportation car is configured with between described Sewage Plant and cement mill, so, not only can reduce the manufacturing cost of equipment widely, and, greatly reduce the transportation cost of mud.The barrier of rectangle is comprised again owing to have employed described mud granule drying device, the technique means of multiple stage blower fan is provided with below the barrier of described rectangle, so, the structure of mud granule drying device is simple, reduce further the manufacturing cost of mud granule drying device, improve the mummification efficiency of mud granule.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments to the method for the utility model cement kiln disposing sludge and be described in further detail with the quality coal in cement kiln systems of grate-cooler disposing sludge.
Fig. 1 is the method schematic diagram of the utility model cement kiln disposing sludge.
Fig. 2 is the quality coal in cement kiln systems schematic diagram of the utility model grate-cooler disposing sludge.
Embodiment
As shown in Figure 1 to Figure 2, the method of present embodiment cement kiln disposing sludge first wet mud is made dewatered sludge particle, dewatered sludge particle is passed through the high temperature chamotte heating after calcining from cement kiln 1 again, and contact with the high temperature air through grog, make dewatered sludge particle burning, finally, flue gas is sent into cement kiln tertiary air system, cement mill system sent into by the mud granule after burning and the grog after heat release.
Wet mud is first made dewatered sludge particle owing to have employed by present embodiment, again dewatered sludge particle is delivered to from cement-kiln grate-cooler, and contact with the high temperature air ejected, make dewatered sludge particle burning, finally, flue gas is sent into cement kiln tertiary air system, mud granule after burning and the grog after heat release are sent into the technique means of cement mill system, so, greatly can improve the disposal scale of mud, day dispose scale and can reach 200 ton per days.
One as present embodiment is improved, as shown in Figure 1 to Figure 2, described by dewatered sludge particle by the heating of the high temperature chamotte that ejects from cement kiln, impel the process of dewatered sludge particle burning to complete in grate-cooler 2.Certainly, also can be described by the high temperature chamotte heating of dewatered sludge particle by ejecting from cement kiln, impel the process of dewatered sludge particle burning to be complete in cartridge type cooler, described cartridge type cooler be prior art.Described high temperature chamotte escapes and enter in grate-cooler 2 from cement kiln and is layered on grate 2-1, described dewatered sludge particle is delivered in grate-cooler 2 and is layered on above described high temperature chamotte, under the effect of blower fan 2-2, the high temperature air ejected from high temperature chamotte and dewatered sludge particle contacts, impel dewatered sludge particle burning; Can certainly be with from cement kiln, the high temperature chamotte escaped and enter in grate-cooler 2 is layered on grate 2-1 after mixing by the dewatered sludge particle delivered in cement-kiln grate-cooler 2, under the effect of blower fan 2-2, the high temperature air ejected from high temperature chamotte and dewatered sludge particle contacts, impel dewatered sludge particle burning.
Present embodiment is described by the high temperature chamotte heating of dewatered sludge particle by ejecting from cement kiln owing to have employed, the process of dewatered sludge particle burning is impelled to be the technique means completed in grate-cooler, so, directly dewatered sludge particle can be passed through the process of high temperature grate-cooler, solve parameter influence mass transport and the clean-burning problems such as the moisture of prior art, size, conglomeration, greatly reduce energy consumption; Because separate unit grate-cooler processing power is large, sludge disposal amount is less relative to it, thus little to cement kiln influence on system operation; Realize waste zero release; Cement kiln does not produce flying dust and slag, does not have the problem of secondary pollution; Add mud from grate-cooler, can delivery technology be simplified; Conventional mechanical conveying can meet a large amount of process, does not worry air and cloth assignment problem.
Further improve as present embodiment, as shown in Figure 1 to Figure 2, enter to described dewatered sludge uniform particles the sludge inlet on kiln head cover 3, described kiln head cover 3 is communicated with described cement kiln 1 and described grate-cooler 2.
Present embodiment owing to entering the technique means of the sludge inlet on kiln head cover with have employed described dewatered sludge uniform particles, so, to raw material calorific value and water adaptability wide, due to grate-cooler high temperature, aerobic, and the residence time is long, higher water-containing sludge can be adapted to; Greatly can improve the disposal efficiency to dewatered sludge particle and quality.
Further improve as present embodiment, as shown in Figure 1 to Figure 2, the temperature in described grate-cooler 2, more than 1300 degree, is in aerobic state in described grate-cooler 2.
Present embodiment is owing to have employed temperature in described grate-cooler more than 1300 degree, the technique means of aerobic state is in described grate-cooler, so, mud good permeability after drying particles, grate-cooler can fully realize burning, can thoroughly eliminate the objectionable impurities such as Dioxins, furans, and these objectionable impuritiess there will not be the hidden danger of regeneration; Significantly can reduce the acid gas emissions such as cement kiln oxynitride oxysulfide.
Also further improve as present embodiment, as shown in Figure 1 to Figure 2, described dewatered sludge particle of being made by wet mud is first by adding mineral substance and/or biomass in the wet mud of Sewage Plant A or water drain, moisture in wet mud is reduced to 40-50%, again the mud after reduction moisture is made wet mud granule, then, mud granule ventilation mummification of wetting forms dewatered sludge particle.
Present embodiment is first by adding mineral substance and/or biomass in the wet mud of Sewage Plant or water drain owing to have employed described dewatered sludge particle of being made by wet mud, moisture in wet mud is reduced to 40-50%, again the mud after reduction moisture is made wet mud granule, then, mud granule ventilation mummification of wetting forms dewatered sludge granule technology means, so, the moisture in mud can be reduced, be conducive to the transport to mud, improve the calorific value of mud, for the disposal amount improving mud creates favourable condition, enhance the adaptability of cement kiln to sludge disposal; By sewage plant sludge is mixed preliminary precipitation and drying particles precipitation with additive, reach low cost precipitation, the cement kiln achieving dewatered sludge is disposed; Because mud with the addition of the additive such as mineral substance, biomass, both reduce moisture and also inhibits foul smell, decrease deodoration system investment.
Further improve again as present embodiment, as shown in Figure 1 to Figure 2, describedly moisture in wet mud is reduced to 40-50% carries out in mud mixing machine 12, described wet mud is squeezed in described mud mixing machine 12 by sludge pump 13, described mineral substance is flyash and/or unslaked lime, described mineral substance measures 14 devices by mineral substance and adds in described mud mixing machine, describedly make wet mud granule realized reducing the mud after moisture by sludge granulator 17, describedly send into described sludge granulator 17 by reducing the mud after moisture by rotary conveyor 16, described wet mud granule ventilation mummification to be realized by mud granule drying device 19, described wet mud granule sends into described mud granule drying device 19 by forklift 18, the moisture content of described dewatered sludge particle is 10%, described dewatered sludge particle is transported in the dewatered sludge particulate material storehouse 10 of cement mill B by dewatered sludge particulate transportation car 20.
Moisture in wet mud is describedly reduced to 40-50% owing to have employed and carries out in mud mixing machine by present embodiment, described wet mud is squeezed in described mud mixing machine by sludge pump, described mineral substance is flyash and/or unslaked lime, described mineral substance adds in described mud mixing machine by mineral substance measuring apparatus, describedly make wet mud granule realized reducing the mud after moisture by sludge granulator, describedly send into described sludge granulator by reducing the mud after moisture by rotary conveyor, described wet mud granule ventilation mummification to be realized by mud granule drying device, described wet mud granule sends into described mud granule drying device by forklift, the moisture content of described dewatered sludge particle is 10%, described dewatered sludge particle is transported to the technique means in the dewatered sludge particulate material storehouse in cement mill by dewatered sludge particulate transportation car, so, so, substantially reduce the investment of equipment, be conducive to applying by cement kiln disposing sludge method.
Further improve as present embodiment, as shown in Figure 1 to Figure 2, described biomass are garbage waste materials, and described biomass are added in described mud mixing machine 12 by biomass measuring apparatus 15.
Present embodiment owing to have employed the technique means that described biomass are garbage waste materials, so, the cost of sludge pretreatment can be greatly reduced, increase further the calorific value of mud.
As shown in Figure 2, the present embodiment quality coal in cement kiln systems of grate-cooler disposing sludge, comprise cement kiln 1 and grate-cooler 2, described cement kiln 1 is communicated with by kiln head cover 3 with grate-cooler 2, described kiln head cover 3 is communicated with described cement kiln 1 by tertiary air pipeline 5, described kiln head cover 3 is provided with sludge inlet, and described sludge inlet is communicated with dewatered sludge particulate material storehouse 10 by conveying device of dry sludge particles 6,8.As can be seen from Figure 2, described kiln head cover 3 is provided with burner 4, and the spout of described burner 4 is positioned at described cement kiln 1.
Present embodiment is provided with sludge inlet owing to have employed on described kiln head cover, the technique means that described sludge inlet is communicated with dewatered sludge particulate material storehouse by conveying device of dry sludge particles, so, greatly can improve the disposal scale of mud, day dispose scale and can reach 200 ton per days; Directly dewatered sludge particle can be passed through the process of high temperature grate-cooler, solve parameter influence mass transport and the clean-burning problems such as the moisture of prior art, size, conglomeration, greatly reduce energy consumption; Because separate unit grate-cooler processing power is large, sludge disposal amount is less relative to it, thus little to cement kiln influence on system operation; Realize waste zero release; Cement kiln does not produce flying dust and slag, does not have the problem of secondary pollution; Add mud from grate-cooler, can delivery technology be simplified; Conventional mechanical conveying can meet a large amount of process, does not worry air and cloth assignment problem.
One as present embodiment is improved, as shown in Figure 2, described conveying device of dry sludge particles 6, 8 comprise pan feeding chute 6 and horizontal conveyer 8, described horizontal conveyer 8 can be chain conveyor or belt type conveyer, the lower end of described pan feeding chute 6 is positioned at described kiln head cover 3 sludge inlet, top in the middle part of described pan feeding chute 3 is provided with air valve 7, the discharge port of described horizontal conveyer 8 is positioned at the top of described pan feeding chute 6 upper end down, dewatered sludge particle metering apparatus 9 is provided with between the discharge port of described horizontal conveyer 8 and the upper end of described pan feeding chute 6, the opening for feed of described horizontal conveyer 8 is positioned at described dewatered sludge particulate material storehouse 10 upward, grab mechanisms 11 is provided with in described dewatered sludge particulate material storehouse, blanking place of described grab mechanisms 11 is positioned at the top of the opening for feed of described horizontal conveyer 8.
Present embodiment comprises pan feeding chute and horizontal conveyer owing to have employed described conveying device of dry sludge particles, the lower end of described pan feeding chute is positioned at described sludge inlet, top in the middle part of described pan feeding chute is provided with air valve, the discharge port of described horizontal conveyer is positioned at the top of described pan feeding chute upper end down, dewatered sludge particle metering apparatus is provided with between the discharge port of described horizontal conveyer and the upper end of described pan feeding chute, the opening for feed of described horizontal conveyer is positioned at described dewatered sludge particulate material storehouse upward, grab mechanisms is provided with in described dewatered sludge particulate material storehouse, blanking place of described grab mechanisms is positioned at the technique means of the top of the opening for feed of described horizontal conveyer, so, production technique is simple, facility investment is few, the dewatered sludge solving prior art directly enters decomposing furnace blocking, the problems such as incomplete combustion.
Further improve as present embodiment; as shown in Figure 2; the quality coal in cement kiln systems of described grate-cooler disposing sludge also comprises the sludge sump 22 being arranged on Sewage Plant A; mud mixing machine 12, sludge granulator 17 and mud granule drying device 19; described mud mixing machine 12 is configured with sludge pump 13 and mineral substance measuring apparatus 14, and described mineral substance measuring apparatus 14 also can be used for biomass measuring apparatus.Certainly, also can be that described mud mixing machine 12 is separately configured with biomass measuring apparatus 15.Rotary conveyor 16 is configured with between described mud mixing machine 12 and described sludge granulator 17; be configured with forklift 18 between described sludge granulator 17 and described mud granule drying device 19, between described Sewage Plant A and cement mill B, be configured with dewatered sludge particulate transportation car 20.Described mud granule drying device 19 comprises the barrier 19-1 of rectangle, is provided with multiple stage blower fan 19-2 below the barrier 19-1 of described rectangle.
Present embodiment also comprises the mud mixing machine being arranged on Sewage Plant due to the quality coal in cement kiln systems that have employed described grate-cooler disposing sludge, sludge granulator and mud granule drying device, described mud mixing machine is configured with sludge pump and mineral substance measuring apparatus, rotary conveyor is configured with between described mud mixing machine and described sludge granulator, forklift is configured with between described sludge granulator and described mud granule drying device, the technique means of dewatered sludge particulate transportation car is configured with between described Sewage Plant and cement mill, so, not only can reduce the manufacturing cost of equipment widely, and, greatly reduce the transportation cost of mud.The barrier of rectangle is comprised again owing to have employed described mud granule drying device, the technique means of multiple stage blower fan is provided with below the barrier of described rectangle, so, the structure of mud granule drying device is simple, reduce further the manufacturing cost of mud granule drying device, improve the mummification efficiency of mud granule.
Claims (3)
1. the quality coal in cement kiln systems by grate-cooler disposing sludge, comprise cement kiln and grate-cooler, described cement kiln is communicated with by kiln head cover with grate-cooler, described kiln head cover is communicated with described cement kiln by tertiary air pipeline, it is characterized in that: described kiln head cover is provided with sludge inlet, described sludge inlet is communicated with dewatered sludge particulate material storehouse by conveying device of dry sludge particles.
2. the quality coal in cement kiln systems of grate-cooler disposing sludge according to claim 1, it is characterized in that, described conveying device of dry sludge particles comprises pan feeding chute and horizontal conveyer, the lower end of described pan feeding chute is positioned at described sludge inlet, top in the middle part of described pan feeding chute is provided with air valve, the discharge port of described horizontal conveyer is positioned at the top of described pan feeding chute upper end down, dewatered sludge particle metering apparatus is provided with between the discharge port of described horizontal conveyer and the upper end of described pan feeding chute, the opening for feed of described horizontal conveyer is positioned at described dewatered sludge particulate material storehouse upward, grab mechanisms is provided with in described dewatered sludge particulate material storehouse, blanking place of described grab mechanisms is positioned at the top of the opening for feed of described horizontal conveyer.
3. the quality coal in cement kiln systems of grate-cooler disposing sludge according to claim 1, it is characterized in that, the quality coal in cement kiln systems of described grate-cooler disposing sludge also comprises the mud mixing machine, sludge granulator and the mud granule drying device that are arranged on Sewage Plant, described mud mixing machine is configured with sludge pump and mineral substance measuring apparatus, rotary conveyor is configured with between described mud mixing machine and described sludge granulator, be configured with forklift between described sludge granulator and described mud granule drying device, between described Sewage Plant and cement mill, be configured with dewatered sludge particulate transportation car; Described mud granule drying device comprises the barrier of rectangle, is provided with multiple stage blower fan below the barrier of described rectangle.
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| CN201420808269.8U CN204356237U (en) | 2014-12-19 | 2014-12-19 | With the quality coal in cement kiln systems of grate-cooler disposing sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478243A (en) * | 2014-12-19 | 2015-04-01 | 北京金隅股份有限公司 | Method for treating sludge by cement kiln and cement kiln system for treating sludge by grate cooler |
| CN105276589A (en) * | 2015-11-02 | 2016-01-27 | 北京建筑材料科学研究总院有限公司 | Drying system for drying water-containing garbage by utilizing waste heat of cement kiln system |
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- 2014-12-19 CN CN201420808269.8U patent/CN204356237U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478243A (en) * | 2014-12-19 | 2015-04-01 | 北京金隅股份有限公司 | Method for treating sludge by cement kiln and cement kiln system for treating sludge by grate cooler |
| CN104478243B (en) * | 2014-12-19 | 2017-02-22 | 北京金隅股份有限公司 | Method for treating sludge by cement kiln and cement kiln system for treating sludge by grate cooler |
| CN105276589A (en) * | 2015-11-02 | 2016-01-27 | 北京建筑材料科学研究总院有限公司 | Drying system for drying water-containing garbage by utilizing waste heat of cement kiln system |
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