CN207619249U - A kind of system using cement kiln synergic processing municipal sludge - Google Patents
A kind of system using cement kiln synergic processing municipal sludge Download PDFInfo
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- CN207619249U CN207619249U CN201721516644.1U CN201721516644U CN207619249U CN 207619249 U CN207619249 U CN 207619249U CN 201721516644 U CN201721516644 U CN 201721516644U CN 207619249 U CN207619249 U CN 207619249U
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Abstract
A kind of system using cement kiln synergic processing municipal sludge includes for storing dry, wet mud surge bunker, and metering system is respectively set in surge bunker outlet, and wherein device for discharging is forced in setting in wet mud surge bunker；The hybrid system that sludge is stirred；The three-level dispersed system system that sludge is disperseed；The suspended state drying system that sludge is dried；Outer circulation piece-rate system；The dust collecting system gathered dust the exhaust gas for circulation separation system of going out；Revert system；The condenser system of draining cooling is carried out to exhaust gas；The utility model utilizes cement plant kiln head and tail residual heat drying municipal sludge, moisture percentage in sewage sludge ＜ 5% after drying, has that simple flow, control are simple, investment is small a little, drying sludge can further recycling, there is good economy and social value.
Description
Technical field
The invention belongs to municipal sludge processing technology fields, more particularly to a kind of to utilize cement kiln synergic processing municipal sludge
System.
Background technology
Municipal sludge main source is the product of the purification process such as the sanitary sewage of resident, municipal wastewater, with waterworks
The soil properties such as sludge sludge is different, and the content of organic matter is higher, typically constitutes from 50% of its contents on dry basis or more, while also containing a large amount of
The nutriments such as nitrogen phosphorus.Since part of contaminated water factory also receives some industrial wastewaters, also contain in sludge a certain proportion of heavy
Metal ion and chemical substance especially contain a certain amount of harmful chemical, as adsorbability organic halogen, anion close
At detergent, Polychlorinated biphenyls etc. and a large amount of pathogenic microorganism.In addition, the moisture content of municipal sludge is high, it is primarily present form
For Free water, Interstitial Water, capillary water and intracellular hydrate water, general sewage plant can only be by way of the concentration of physics
Free water is removed into a part, therefore, moisture content when sewage plant is discharged in sewage plant sludge substantially remains in 80% or so, generally
This sludge is referred to as dewatered sludge or dehydrated sludge cake.
With the quickening of Urbanization in China, the discharge capacity cumulative year after year of municipal wastewater, as the spin-off of sewage, when
About 40,000,000 tons of the yield of year of preceding China's municipal sludge.Traditional depth land-fill method not only wastes soil, but also easily causes two
Secondary pollution cannot achieve minimizing, innoxious, recycling purpose.
It is innoxious, disposal of resources a important way using cement kiln synergic processing municipal sludge.Japan, the U.S.
And just there are the industrial applications of this respect in Europe early in last century 70, the eighties.The cement producer of China is utilizing cement kiln
There has also been nearly 20 years Successful Practices in terms of cooperative disposal industrial solid castoff, hazardous waste.
Currently, there are two types of modes for quality coal in cement kiln systems disposing sludge：One is aqueous 80% dewatered sludge is directly put into kiln
Interior, this mode is since sludge water content is too high, and the unit interval sludge quantity of input is small, and treatment scale is limited；Another kind is first right
Dewatered sludge is put into kiln again after carrying out a degree of desiccation using cement kiln waste heat, and this mode can greatly improve at sludge
The amount of setting, since moisture percentage in sewage sludge still can normally produce cement kiln the certain influence of generation, simultaneously 40% or so after its desiccation
The difficulty of the further recycling of sludge after desiccation is very big.
Invention content
In order to overcome the disadvantages of the above prior art, cement kiln synergic processing is utilized the purpose of the present invention is to provide a kind of
The system of municipal sludge has the characteristics that with good investment, operating cost is low, easy to operate, maximum minimizing sludge.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of system using cement kiln synergic processing municipal sludge, including：
For storing dry, wet mud surge bunker, metering system, wherein wet mud surge bunker is respectively set in surge bunker outlet
Device for discharging is forced in interior setting；
To the hybrid system that sludge is stirred, entrance connects the outlet of dry, wet mud metering system, and material outlet connects the
Level-one decentralized system entrance；
To the three-level dispersed system system that sludge is disperseed, wherein first order decentralized system connects hybrid system outlet, the first order
The sludge that presetting granularity is not up in decentralized system is sent into second level decentralized system, and the second level decentralized system is also connected with kiln
Head/kiln tail heat smoke pipeline；
It to the suspended state drying system that sludge is dried, is connect with the outlet of second level decentralized system, also with first
Grade decentralized system reaches the sludge outlet connection of presetting granularity；
Outer circulation piece-rate system connects the outlet of drying system, and material outlet connects the entrance of third level material scattering machine,
The outlet tieback drying system of third level material scattering machine；
To the dust collecting system that the exhaust gas for circulation separation system of going out gathers dust, entrance connects the useless of outer circulation piece-rate system
Gas exports, and drying sludge is collected in dust collecting system；
Revert system entrance connects the discharge outlets of dust collecting system, and outlet connects dewatered sludge surge bunker entrance；
The condenser system of draining cooling is carried out to exhaust gas, entrance connects the waste gas outlet of dust collecting system, and exhaust gas is drained through it
After cooling, kiln head cover or grate-cooler cooling blower are sent by air-introduced machine.
The drying system is dryer, and the material dispersion system is material scattering machine, and the dust collecting system is dust
Collector.
The dust collector is cyclone cylinder or electricity gathers dust or bag gathers dust or three's combination.
The drying system is negative-pressure operation, power resources in tail end air-introduced machine, the revert system and corresponding feeding,
Compounding, mixing system regards material properties and may be selected to cancel.
The condenser system can be water-cooling type or Wind-cooling type or other any type condenser systems.
The visual actual condition selection of condenser system is cancelled.
The method for disposing municipal sludge using the device, includes the following steps：
The first step：It will be stored in wet mud surge bunker from the municipal sludge from sewage treatment plant, wet mud buffering
Storehouse, which is set, forces device for discharging so as to continuous-stable discharging；
Second step：Surge bunker divides into feed proportioning system, and wet mud and finished product dewatered sludge are fed after metering device measures respectively
Mixing system, the finished product dewatered sludge of supplying is for reducing wet mud moisture content, it is ensured that sludge blanking is smooth in the disposal process of rear end
It is not bonded, blocks；
Third walks：Two kinds of materials are sufficiently mixed in mixing system and stir evenly, and reach through the dispersion of first order decentralized system
It after certain particle size, is broken up in drying system into suspended state, while kiln hood/kiln tail heat smoke leads to suspended state by tail portion air-introduced machine
In drying system；
4th step：Sludge is after the suspended state drying system bottom second level system of breaing up is broken up, the heat that is entered by bottom
Flue gas brings suspended state drying system, sludge and hot wind into through heat exchange, and moisture is converted into gas by liquid and enters exhaust gas in sludge,
Sludge is oven-dried, and sludge takes suspended state drying system out of with exhaust gas and enters outer circulation piece-rate system；
5th step：In outer circulation separation system, bulky grain is collected and is returned after the third level system of breaing up is broken up outstanding
Floading condition drying system continues to dry, and the little particle isolated is taken out of as finished product by exhaust gas；
6th step：The exhaust gas of the sludge containing finished product enters dust collector, and dewatered sludge is partly returned through revert system after collection
Dewatered sludge surge bunker is returned as dispensing, remaining can be used as fuel and be sent into kiln hood/kiln tail burner as the finished product storage after drying
Burning also can be used as organic fertilizer use.Exhaust gas is sent into kiln head cover or grate-cooler cooling wind after carrying out draining cooling by condenser
Machine, in the high temperature environment the volatile organic compounds in exhaust gas be purified；In addition, being entered by the condensed water that condenser is discharged
Sewage disposal system is handled.
The sludge can be the wet stickiness sludge that contains generated in other industry production process, and the heat smoke is cement plant
Kiln hood or temperature of kiln head are more than 80 DEG C of heat smoke.
In blending process, the water content returned through revert system is less than 5% finished product dewatered sludge, match ratio 0%
~50% is adjustable.
After the dispersion of first order decentralized system, sludge grain size is less than 5000 μm；After the dispersion of second level decentralized system, sludge
Grain size is less than 1000 μm, and after the dispersion of third level decentralized system, sludge grain size is less than 500 μm.
The heat smoke is mixed from kiln hood or kiln tail or both, and heat smoke temperature is 80 DEG C~450 DEG C, after the drying
Dewatered sludge moisture content is less than 5%, and the outer circulation piece-rate system, separative efficiency 10~90%, the coarse fodder isolated is through breaing up
Machine returns again to drying system after breaing up.
Exhaust gas was sent into kiln head cover or grate-cooler cooling blower after can both having carried out draining cooling by condenser, can not also pass through
Condenser is sent directly into kiln head cover or grate-cooler cooling blower.
Exhaust gas can all be sent into kiln head cover, also can all be sent into grate-cooler cooling blower.
Dewatered sludge after drying can both be sent into kiln hood burner or kiln tail burner is used as fuel, can also be used as
Machine fertilizer uses.
Compared with prior art, the beneficial effects of the invention are as follows：
1) process procedure is relatively easy, with good investment, and floor space is small.
2) good to the thermal adaptability of heat smoke, the minimum flue gas for being 80 DEG C using temperature.
3) moisture percentage in sewage sludge is less than 5% after handling, you can is used for kiln head and tail burner as fuel, also can be used as organic
The further recycling of fertilizer.
To sum up, moisture percentage in sewage sludge ＜ 5% after present invention drying, simple flow, control is simple, and investment is small, and drying sludge can
Further recycling has good economy and social value.
Description of the drawings
Fig. 1 is one structural schematic diagram of sludge drying system form of the present invention.
Fig. 2 is two structural schematic diagram of sludge drying system form of the present invention.
Fig. 3 is the sludge furnace drying method flow diagram of the present invention.
Specific implementation mode
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
A kind of system using cement kiln synergic processing municipal sludge of the invention, including：
For storing dry, wet mud surge bunker, metering system is respectively set in surge bunker outlet.In specific equipment,
Wet mud surge bunker 01a and dewatered sludge surge bunker 01b is mechanism independently.Wet dirt is arranged in the outlets wet mud surge bunker 01a
It is arranged in mud metering device 03a, dewatered sludge surge bunker 01b outlet setting dewatered sludge metering device 03b, wet mud surge bunker 01a
Force device for discharging 02a.
To the hybrid system that sludge is stirred, entrance connects the outlet of dry, wet mud metering system, and material outlet connects the
Level-one decentralized system entrance；In specific equipment, hybrid system uses mixing device 04, dewatered sludge and wet mud is mixed equal
It is even.
To the three-level dispersed system system that sludge is disperseed, wherein first order decentralized system connects hybrid system outlet, the first order
The sludge that presetting granularity is not up in decentralized system is sent into second level decentralized system, and the second level decentralized system is also connected with kiln
Head/kiln tail heat smoke pipeline；In specific equipment, first order decentralized system, that is, first order material scattering machine 05, the second fraction
Scattered system, that is, second level material scattering machine 06, third level decentralized system are third level material scattering machine 09.
It to the suspended state drying system that sludge is dried, is connect with the outlet of second level decentralized system, also with first
Grade decentralized system reaches the sludge outlet connection of presetting granularity.In specific equipment, suspended state drying system includes mainly drying
Dry machine 07,07 lower part of sludge feeding dryer that 05 first time of first order material scattering machine breaks up, second level material scattering machine 06
It is arranged in the bottom of dryer 07, the sludge that first order material scattering machine 05 is sent into falls into second level material from 07 bottom of dryer
Beater 06, is broken up for the second time, and the heat smoke from kiln hood or kiln tail after the adjustment match by flow valve 14 and the adjusting of cold blast sliding valve 13
It is sent into from 06 bottom of second level material scattering machine after wind, generates ascending air and break up rear sludge by secondary and bring dryer 07 into.
Outer circulation piece-rate system connects the outlet of drying system, and material outlet connects the entrance of third level material scattering machine,
The outlet tieback drying system of third level material scattering machine.In specific equipment, outer circulation piece-rate system includes outer circulation point
From equipment 08, dust-laden (sludge) exhaust gas for going out dryer enters outer circulation separation equipment 08, big in outer multi-cycle separation equipment 08
Particle, which is collected and returns to dryer 07 after third level material scattering machine 09 disperses again, continues the little particle dried, isolated
It is taken out of into dust collecting system by exhaust gas as finished product.
To the dust collecting system that the exhaust gas for circulation separation system of going out gathers dust, entrance connects the useless of outer circulation piece-rate system
Gas exports, and drying sludge is collected in dust collecting system.In specific equipment, dust collecting system is dust collection device 10, example
Can be cyclone cylinder or electricity gathers dust or bag gathers dust or three's combination, dewatered sludge are collected wherein such as dust collector.
Finished product dewatered sludge is returned to the revert system of dewatered sludge surge bunker, entrance connects the discharge outlets of dust collecting system,
Outlet connects dewatered sludge surge bunker entrance.In specific equipment, the dewatered sludge that dust collection device 11 is collected partly is returned through revert system
Dewatered sludge surge bunker 01b is back to as dispensing, remaining is as finished product after drying.
The condenser system of draining cooling is carried out to exhaust gas, entrance connects the waste gas outlet of dust collecting system, and exhaust gas is drained through it
After cooling, kiln head cover or grate-cooler cooling blower are sent by air-introduced machine.In specific equipment, condenser system is condensing plant
11, the exhaust gas of dust collection device 10 enters condensing plant 11.Exhaust gas after the draining that cools down by passing through grate-cooler in condensing plant 11
Cooling blower is sent into grate-cooler as grate-cooler cooling clinker wind.
According to system above, it is as follows that the present invention provides embodiment：
Embodiment 1
It is one of present system form such as Fig. 1
In conjunction with Fig. 1 and Fig. 3, wet mud is sent through transport system or mobile scraper equipment to wet mud surge bunker 01a, and dirt is done
Mud (finished product after drying) is delivered to dewatered sludge surge bunker 01b, surge bunker 01a~b through revert system and plays transport system and rear end
The unmatched adjustment effect of drying system ability.Device for discharging 02a is forced in setting in wet mud surge bunker 01a, plays material
The effect of continuous uniform blanking.The lower ends surge bunker 01a~b setting metering device 03a~b measures material.After metering
It after sludge is mixed by mixing device 04, is broken up through 05 first time of first order material scattering machine, 07 bottom of feeding dryer, through first
Grade breaks up rear 1500 μm of sludge grain size ＜.Material falls into the second level material scattering machine 06 of drying motor spindle after breaing up for the second time
Dryer 07 is brought by ascending air, 1000 μm of the sludge grain size ＜ after the second level is broken up.Heat smoke from kiln hood or kiln tail
Wind-warm syndrome control is at 80~450 DEG C after flow valve 14 and cold blast sliding valve 13 adjust air distribution after the adjustment, through second level material scattering machine 06 into
Enter dryer 07, exhaust gas flowing is negative-pressure operation, and power comes from air-introduced machine 12.In dryer 07, sludge and exhaust gas carry out
Sufficient heat exchange, moisture enters exhaust gas in sludge, and sludge is oven-dried.Dust-laden (sludge) exhaust gas for going out dryer enters outer circulation
Separation equipment 08.Bulky grain is collected and is returned after third level material scattering machine 09 disperses again in outer multi-cycle separation equipment 08
It returns dryer 07 to continue to dry, the little particle isolated is taken out of by exhaust gas into dust collection device 10, in dust collection device as finished product
Dewatered sludge, which is collected down, in 10 is used as the existing burner of fuel feeding, and exhaust gas enters condensing plant 11.In condensing plant 11
Exhaust gas cools down clinker wind feeding grate-cooler by being used as grate-cooler by grate-cooler cooling blower after the draining that cools down.Dust collection device
10 be bagroom.
Embodiment 2
It is the two of present system form such as Fig. 2
In conjunction with Fig. 2 and Fig. 3, wet mud is sent through transport system or mobile scraper equipment to wet mud surge bunker 01a, and dirt is done
Mud (finished product after drying) is delivered to dewatered sludge surge bunker 01b, surge bunker 01a~b through revert system and plays transport system and rear end
The unmatched adjustment effect of drying system ability.Device for discharging 02a is forced in setting in dewatered sludge surge bunker 01a, plays material
The effect of continuous uniform blanking.The lower ends surge bunker 01a~b setting metering device 03a~b measures material.After metering
It after sludge is mixed by mixing device 04, is broken up through 05 first time of first order material scattering machine, 07 bottom of feeding dryer, through first
Grade breaks up rear 1500 μm of sludge grain size ＜.Material falls into the second level material scattering machine 06 of drying motor spindle after breaing up for the second time
Dryer 07 is brought by ascending air, 1000 μm of the sludge grain size ＜ after the second level is broken up.Heat smoke from kiln hood or kiln tail
Wind-warm syndrome control is at 80~450 DEG C after flow valve 14 and cold blast sliding valve 13 adjust air distribution after the adjustment, through second level material scattering machine 06 into
Enter dryer 07, exhaust gas flowing is negative-pressure operation, and power comes from air-introduced machine 12.In dryer 07, sludge and exhaust gas carry out
Sufficient heat exchange, moisture enters exhaust gas in sludge, and sludge is oven-dried.Dust-laden (sludge) exhaust gas for going out dryer enters outer circulation
Separation equipment 08.Bulky grain is collected and is returned after third level material scattering machine 09 disperses again in outer multi-cycle separation equipment 08
It returns dryer 07 to continue to dry, the little particle isolated is taken out of by exhaust gas into dust collection device 10, in dust collection device as finished product
Dewatered sludge, which is collected down, in 10 is used as the existing burner of fuel feeding, and exhaust gas is sent directly into kiln head cover by air-introduced machine 12.It receives
Dirt equipment 10 is bagroom.
Above example is not that invention is preferably exhaustive, and apparatus-form of the invention can also be there are many form.
To sum up, a kind of method and system using cement kiln synergic processing municipal sludge of the invention, sewage treatment plant generate
Aqueous 80% sludge be sent into cement plant after, into wet mud surge bunker, broken up through metering, mixing system, the first order under storehouse
System enters suspended state and breaks up drying system, and the heat smoke from kiln hood or kiln tail also breaks up drying system into suspended state simultaneously
System.Sludge in drying system is broken up in suspended state and breaks up system by the second level, and outer with entering after heat smoke sufficient heat exchange
Circulation separation system, bulky grain is collected, returns to baker after the third level system of breaing up is broken up in outer circulation separation system
Continue to dry, little particle is taken out of by exhaust gas.Dust-laden (sludge) exhaust gas for going out circulation separation system enters dust collecting system, dewatered sludge by
After dust collecting system is collected, dewatered sludge surge bunker partly is back to as dispensing through revert system, remaining is as the finished product after drying
It stores, kiln head cover or grate-cooler cooling blower is sent into after the condensed system cooling drainage sunk well of exhaust gas.Sludge after present invention drying
Moisture content is less than 5%, and 65% or more mud decrement, system utilizes kiln hood or kiln tail waste heat, is not necessarily to external heat source, operating cost
It is low, Treatment of Sludge expense is reduced, sludge is that further recycling creates good condition after drying.
The above is only the preferred embodiments of the present invention, not does limitation in any form to the present invention, although
The present invention is disclosed as above with preferred embodiments, however is not intended to limit the present invention, any to be familiar with those skilled in the art,
It does not depart within the scope of inventive technique scheme, when the technology contents using the disclosure above make any a little change or are modified to
With variation equivalent embodiment, as long as being the content without departing from technical solution of the present invention, according to the technical essence of the invention to
Any simple modification, equivalent variations and modification made by upper embodiment, in the range of still falling within technical solution of the present invention.
Claims (6)
1. a kind of system using cement kiln synergic processing municipal sludge, which is characterized in that including：
For storing dry, wet mud surge bunker, surge bunker outlet is respectively set metering system, is wherein set in wet mud surge bunker
Set pressure device for discharging；
To the hybrid system that sludge is stirred, entrance connects dry, wet mud metering system outlet, and material outlet connects the first order
Decentralized system entrance；
To the three-level dispersed system system that sludge is disperseed, wherein first order decentralized system connects hybrid system outlet, first order dispersion
The sludge that presetting granularity is not up in system is sent into second level decentralized system, and the second level decentralized system is also connected with kiln hood/kiln
Tail heat smoke pipeline；
To the suspended state drying system that sludge is dried, connect with the outlet of second level decentralized system, also with the first fraction
Scattered system reaches the sludge outlet connection of presetting granularity；
Outer circulation piece-rate system, connects the outlet of drying system, and material outlet connects the entrance of third level material scattering machine, third
The outlet tieback drying system of grade material scattering machine；
To the dust collecting system that the exhaust gas for circulation separation system of going out gathers dust, the exhaust gas that entrance connects outer circulation piece-rate system goes out
Mouthful, drying sludge is collected in dust collecting system；
Revert system entrance connects the discharge outlets of dust collecting system, and outlet connects dewatered sludge surge bunker entrance；
The condenser system of draining cooling is carried out to exhaust gas, entrance connects the waste gas outlet of dust collecting system, and exhaust gas cools down through its draining
Afterwards, kiln head cover or grate-cooler cooling blower are sent by air-introduced machine.
2. the system for utilizing cement kiln synergic processing municipal sludge according to claim 1, which is characterized in that the drying system
System is dryer, and the three-level dispersed system system is material scattering machine, and the dust collecting system is dust collector.
3. the system for utilizing cement kiln synergic processing municipal sludge according to claim 2, which is characterized in that the dust is received
Storage is cyclone cylinder or electricity gathers dust or bag gathers dust or three's combination.
4. the system for utilizing cement kiln synergic processing municipal sludge according to claim 1, which is characterized in that the drying system
System is negative-pressure operation, and power resources regard object in tail end air-introduced machine, the revert system and corresponding feeding, compounding, mixing system
Expect that property may be selected to cancel.
5. the system for utilizing cement kiln synergic processing municipal sludge according to claim 1, which is characterized in that the condensed system
System is water-cooling type or Wind-cooling type.
6. the system for utilizing cement kiln synergic processing municipal sludge according to claim 1, which is characterized in that cancel described cold
Solidifying system.
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| CN201721516644.1U CN207619249U (en) | 2017-11-14 | 2017-11-14 | A kind of system using cement kiln synergic processing municipal sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109851199A (en) * | 2019-01-25 | 2019-06-07 | 唐山冀东装备工程股份有限公司 | A kind of the kiln collaboration innocuity disposal system and technique of plate domestic sludge |
| CN112361800A (en) * | 2020-10-12 | 2021-02-12 | 新疆宝新昌佳石灰制品有限公司 | Method for drying pulverized coal by using waste heat of rotary kiln |
| CN114275992A (en) * | 2022-01-10 | 2022-04-05 | 江苏鹏飞集团股份有限公司 | Novel energy-efficient environmental protection's mud drying kiln system |
| CN116067163A (en) * | 2023-01-10 | 2023-05-05 | 中国中材国际工程股份有限公司 | System and process for drying chlorine-containing powder chlorine-removing filter residues through low-temperature waste gas in kiln head |
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- 2017-11-14 CN CN201721516644.1U patent/CN207619249U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109851199A (en) * | 2019-01-25 | 2019-06-07 | 唐山冀东装备工程股份有限公司 | A kind of the kiln collaboration innocuity disposal system and technique of plate domestic sludge |
| CN109851199B (en) * | 2019-01-25 | 2024-08-09 | 唐山冀东装备工程股份有限公司 | Kiln cooperative harmless treatment system and technology for platy domestic sludge |
| CN112361800A (en) * | 2020-10-12 | 2021-02-12 | 新疆宝新昌佳石灰制品有限公司 | Method for drying pulverized coal by using waste heat of rotary kiln |
| CN114275992A (en) * | 2022-01-10 | 2022-04-05 | 江苏鹏飞集团股份有限公司 | Novel energy-efficient environmental protection's mud drying kiln system |
| CN116067163A (en) * | 2023-01-10 | 2023-05-05 | 中国中材国际工程股份有限公司 | System and process for drying chlorine-containing powder chlorine-removing filter residues through low-temperature waste gas in kiln head |
| CN116067163B (en) * | 2023-01-10 | 2024-05-10 | 中国中材国际工程股份有限公司 | System and process for drying chlorine-containing powder chlorine-removing filter residues through low-temperature waste gas in kiln head |
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