CN207222548U - The coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish - Google Patents
The coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish Download PDFInfo
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- CN207222548U CN207222548U CN201721145555.0U CN201721145555U CN207222548U CN 207222548 U CN207222548 U CN 207222548U CN 201721145555 U CN201721145555 U CN 201721145555U CN 207222548 U CN207222548 U CN 207222548U
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- 239000002689 soil Substances 0.000 title claims abstract description 128
- 239000004568 cement Substances 0.000 title claims abstract description 54
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 48
- 239000004033 plastic Substances 0.000 title claims abstract description 35
- 229920003023 plastic Polymers 0.000 title claims abstract description 35
- 230000032683 aging Effects 0.000 title claims abstract description 28
- 238000003795 desorption Methods 0.000 claims abstract description 88
- 238000001035 drying Methods 0.000 claims abstract description 49
- 239000002699 waste material Substances 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000012216 screening Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 17
- 238000013019 agitation Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000004064 recycling Methods 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 15
- 239000000047 product Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000004016 soil organic matter Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses the coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish, including aging screening rubbish equipment, waste incinerator, fertile soil pre-drying device and fertile soil thermal desorption device；Light refuse in screening installation oversize is sent to waste incinerator by transmission device to burn, fertile soil under screening installation sieve is sent to fertile soil pre-drying device and fertile soil thermal desorption device by transmission device carries out drying and thermal desorption processing, one is provided with the downside of vibrating screen oversize submitting mouth and throws the machine that selects, and the utility model is by throwing the collection efficiency for selecting machine step to improve plastics；By " treatment of wastes with processes of wastes against one another " and the theory of heat energy recycling, the heat source using the thermal energy of Plastics Combustion release as fertile soil thermal desorption；Exhaust gas after fertile soil thermal desorption is disposed by the exhaust treatment system of cement kiln, has saved the processing cost of fertile soil thermal desorption tail gas.
Description
Technical field
It the utility model is related to the coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish.
Background technology
Landfill method was once in the world to the main way of domestic rubbish disposal, but with the big volume production of household refuse landfill sites
Raw, thing followed pollution problem and land wastage problem are also serious all the more.On the one hand, household refuse landfill sites are in garbage disposal
Process can produce the polluters such as a large amount of percolates and refuse landfill gas, not only cause serious dirt to landfill yard and surrounding enviroment
Dye, also forms grave danger to the health of nearby residents；On the other hand, household refuse landfill sites usually take up a large area, Yi Zao
Into the waste of land resource.
According to《Chinese town and country Construction Statistics yearbook》Statistics（2014）, by the end of the year 2013, the existing health in the country
Landfill yard, Mini nutritionalassessment and the integrated treatment field based on landfill amount to 1549, and disposal ability adds up to 421776t/d, accounts for
Ground area is 36262 hectares.In the landfill yard that these are currently running, nearly half concentrates on this stage of 2006-2014 and throws
People runs.Wherein 2006-2010 puts into operation 737, accounting 47.58%；2011-2014 puts into operation 462, accounting
29.70%, secondly put into operation between 2001-2005 220, accounting 14.20%；Between 1996-2000 before 50,95 years
30,50 of specific service time are not known in other.By every landfill yard average life for based on 15 years, from now on 5~
15 years, there will be 1469 landfill yards to enter the closing stage successively, China also enters the high frequency period that refuse landfill is discarded immediately,
Refuse landfill that is a large amount of discarded or will discarding urgently is handled.In addition with the economic development in China, household refuse landfill sites
It is eliminated at last, will have largely discarded household refuse landfill sites at that time needs properly to be disposed.
According to correlative study achievement, in general southern region of China landfill yard 8-10, northern area landfill yard 10-15
Year can exploit.With the continuous improvement of Beijing's environmental protection standard, landfill yard is built with the Standardization Requirement of operation increasingly
Height, makes initial investment and operating cost all increase substantially accordingly.In this context, the research aging rubbish of landfill yard is inquired into as early as possible
The technology and approach that rubbish is pre-processed and recycled are of great significance.The excavation of landfill yard is administered, and can increase existing landfill yard storehouse
Hold, extend the physical life of landfill yard, the soil vacated and returned after excavation can carry out public facility construction, realize the sharp again of soil
With.
But Excavating of Landfills produce aging rubbish recycling treatment be landfill yard administer face it is mostly important
Problem.The disposal of the especially material such as the highest fertile soil of content and plastics is particularly critical, about 50- in the aging rubbish after excavation
70% is screenings fertile soil, and 25-42% is plastics.The recycling mode of the incendive garbages such as plastics mainly has（1）Carry out at burning
Reason, China increased burning disposal dynamics always in terms of garbage disposal in recent years, but burning disposal ability is limited, current rubbish
Rubbish burns or based on crude waste, and the disposal ability do not had more than needed in short-term carries out plastic garbage in aging rubbish
Burning disposal；（2）As the alternative fuel of cement kiln, plastic garbage is highly developed as the alternative fuel technology of cement kiln,
There are many successful cases, but disposal ability is by the harmful elements such as chlorine, and the influence of cement kiln condition and technique in itself.
The processing mode humous of aging sieving garbage has：（1）Backfill, due to the fertile soil produced after Excavating of Landfills
Amount is very big, and general is difficult to find suitable treatment approach, most of all by the way of backfill, does not realize landfill yard really
The recycling for rising storage capacity and rubbish, the fertile soil of the informal landfill yard governance process in Beijing is just using the side of backfill
Formula；（2）Afforestation, since aging rubbish is not reaching to the requirement of mineralising, is tested and analyzed by literature query and investigation, aging
Fertile soil after sieving garbage has obvious stink, and msw water content is higher, between about 35%-45%, indivedual content of beary metal compared with
Height, also needs to be pre-processed before carrying out afforestation, and afforestation has seasonal requirement, and demand is limited, is not humic
The preferable outlet that soil resource utilizes；（3）Fertile soil manufactures haydite, and it is humous in below 20mm which only handles particle diameter,
But later research and engineering screening result shows that fertile soil is distributed in below 40mm, ceramic particle technology is manufactured in addition and is also needed into one
Walk and below 0.6mm, technical requirements and high energy consumption are finely ground to repeatedly to the fertile soil of 20mm particle diameter sections；（4）Fertile soil manufactures coagulation
Soil, which is also to require that fertile soil is carried out repeatedly to crush until particle diameter reaches 5-8mm, while is dried when manufacturing concrete
About 30-40 parts of fertile soil additive amount after crushing, disposal amount is relatively small.
In the assorting room of rubbish, not high always for the organic efficiency of the plastics in oversize, some plastic tapes can
To be recycled by the method for blowing, but for the moist heavier blowing of aging kitchen-can bag effect with regard to unobvious, at the same time
For some solid plastics collect effect with regard to worse, therefore how to improve to these garbage reclamations processing be to aging rubbish
Urgent problem to be solved is needed in processing procedure.
The content of the invention
The purpose of this utility model is to propose the collaboration processing of fertile soil and plastics on cement kiln in a kind of aging rubbish
System, is processing system and method to aging at least more than 5 years rubbish, is divided plastics, stone and fertile soil by screening
Separate out and, pre- desiccation is carried out to fertile soil using the waste heat of cement kiln, the fertile soil after desiccation carries out thermal desorption processing, in system
The step of make use of throwing to select sufficiently separates plastics and stone, using cement kiln realize in aging rubbish fertile soil and
The collaboration recycling of the incendive garbages such as plastics.
To achieve these goals, the technical solution of the utility model is：
The coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish, including aging screening rubbish are set
Standby, waste incinerator, fertile soil pre-drying device and fertile soil thermal desorption device；Light refuse in screening installation oversize leads to
Cross transmission device and send to waste incinerator and burn, the fertile soil under screening installation sieve is sent to fertile soil prebake by transmission device
Device and fertile soil thermal desorption device carry out drying and thermal desorption processing, wherein, the screening installation includes vibrating screen, vibrating screen
Downside be fertile soil collecting tank, fertile soil collecting tank passes through transmission device and connects fertile soil pre-drying device, fertile soil preliminary drying
Equipment for drying connects fertile soil thermal desorption device, is sent out in vibrating screen oversize and air-suction duct is provided with the upside of mouth, and air-suction duct is used
Burning in sending the first light refuse suction in oversize to waste incinerator, sending out in vibrating screen oversize and being set on the downside of mouth
There is one to throw and select machine, throw on the downside of the front for selecting machine to dish out mouth by closely to remote the second light refuse collecting tank and inorganic of being respectively arranged with
Heavy material collecting tank, the hot air inlet connection cement kiln tail hot-blast outlet of the fertile soil pre-drying device, thermal desorption dress
The hot-blast outlet of hot air inlet connection waste incinerator is put, the air outlet of fertile soil pre-drying device connects a steam separation
Device, the air outlet of thermal desorption device are connected to cement kiln and the exhaust gas after thermal desorption are sent into cement kiln progress burning disposal, steam
The gas separating pipe of separator selects valve by one or is connected with waste incinerator or is connected with cement kiln.
Scheme is further：The fertile soil collecting tank is pre- through the first sealing chute connection fertile soil by screw(-type) feeder
Drying unit, fertile soil pre-drying device connect fertile soil thermal desorption device, fertile soil prebake dress by the second sealing chute
It is an auger prebake tank containing screw agitation shaft to put, and fertile soil thermal desorption device is one and contains screw agitation shaft
Auger thermal desorption tank, auger prebake tank higher than auger thermal desorption tank anterior-posterior horizontal set, auger
It is provided with helical blade in the screw agitation shaft of prebake tank and auger thermal desorption tank, auger prebake tank and spiral
The hot air inlet of stirring thermal desorption tank is arranged on the front end that helical blade is threadingly advanced direction, auger prebake tank and spiral shell
The air outlet of rotation stirring thermal desorption tank is arranged on the tail end of blade screw direction of advance.
Scheme is further：The water separating pipe of the steam trap connects a separation water cooling case, separates water cooling
The fertile soil that case is connected to fertile soil thermal desorption device by pipeline exports, and separates the cooling water in water cooling case as recycling gas
High temperature drying fertile soil cooling humidification water after body, after high temperature drying fertile soil cooling humidification as cement kiln alternative materials or
Person's cement admixture.
Scheme is further：The air-suction duct is also arranged on the downside thrown and select machine to dish out mouth at the same time.
Scheme is further：Angle is adjustable is obliquely installed in 5 to 10 degree for the vibrating screen and ground level, the vibrations of vibrating screen
It is to move horizontally and jump up and down at the same time.
Scheme is further：It is horizontally disposed belt rotating machine that machine is selected in the throwing, and the belt speed of belt rotating machine can
Adjust, anti-skid bulge bar is horizontally arranged with belt.
The beneficial effects of the utility model are：
The utility model selects machine and its step to improve the collection efficiency of plastics by throwing.
The utility model carries out drying and processing using cement kiln tail waste heat to fertile soil, passes through the precipitation outside cement kiln
Drying is reduced with this, the steam that thermal desorption produces enters influence of the kiln to kiln system.
Aqueous vapor after the utility model dries fertile soil is separated, and moisture is as humous after thermal desorption after separation
Cool down dust suppression measure water, using water wisely.Air quantity is supplemented using the gas after separation as incinerator at the same time, realizes liquids and gases
Component recycles.
Heat of the utility model by the use of the incendive garbage such as plastics in aging rubbish combustion heat energy as fertile soil thermal desorption
Source, the organic matter in fertile soil is separated, and the fertile soil after organic matter separation is used as building materials, has expanded humic civil engineering
The approach that material utilizes, the residue that incendive garbage produces after burning enter raw mill and carry out dispensing, whole processing procedure solid refuse
All realize recycling.
The utility model makes full use of the cement production process and exhaust treatment system of cement kiln, after fertile soil thermal desorption
Exhaust gas be disposed by the exhaust treatment system of cement kiln, saved the processing cost of fertile soil thermal desorption tail gas.
The utility model is described in detail with reference to the accompanying drawings and examples.
Brief description of the drawings
Fig. 1 is Tthe utility model system structure diagram；
Fig. 2 is the utility model prebake and thermal desorption device external structure schematic diagram.
Embodiment
The coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish, including aging screening rubbish are set
Standby, waste incinerator, fertile soil pre-drying device and fertile soil thermal desorption device, the light refuse in screening installation oversize
（The mainly combustibles such as plastic products）Sent to waste incinerator and burnt by transmission device, the fertile soil under screening installation sieve leads to
Cross transmission device and send to fertile soil pre-drying device and fertile soil thermal desorption device and burnt using cement kiln tail hot wind and rubbish
The hot wind for burning stove carries out drying thermal desorption processing, wherein, the screening installation includes vibrating screen 1, is humic on the downside of vibrating screen
Native collecting tank 2, fertile soil collecting tank pass through transmission device（Automobile Transportation or conveyer belt）Fertile soil pre-drying device 3 is connected, it is rotten
Native pre-drying device connection fertile soil thermal desorption device 4 is grown, is sent out in vibrating screen oversize and is provided with air-suction duct 5 on the upside of mouth,
Air-suction duct is used for the first light refuse in oversize（Mainly polybag）Suction, which is sent to waste incinerator 6, burns,
Vibrating screen oversize, which is sent out to be provided with one on the downside of mouth and throw, selects machine 7, throws on the downside of the front for selecting machine to dish out mouth by closely to far setting respectively
It is equipped with the second light refuse（Mainly moist polybag and plastics plate etc.）Collecting tank 8 and inorganic heavy material（The weight such as stone
Thing）Collecting tank 9, hot air inlet 10 kiln tail high-temperature hot-air of the connection cement kiln outlet 1001 of the fertile soil pre-drying device,
Thermal desorption device hot air inlet connects the hot-blast outlet 601 of waste incinerator, the air outlet connection of fertile soil pre-drying device
One steam trap 11, the air outlet of thermal desorption device are connected to cement kiln, and the exhaust gas after thermal desorption is sent into cement kiln
Tertiary-air pipe, dore furnace or grate-cooler carry out burning disposal, and the gas separating pipe of steam trap passes through a selection valve 12
Or it is connected with waste incinerator 6 or is connected with cement kiln 10.
Wherein：Fertile soil in the fertile soil collecting tank is passed through using after forklift or belt transmission by screw(-type) feeder
First sealing chute connection fertile soil pre-drying device 3, as shown in Fig. 2, fertile soil pre-drying device passes through the second sealing chute
13 connection fertile soil thermal desorption devices 4, the fertile soil pre-drying device is that an auger containing screw agitation shaft is pre-
Tank is dried, fertile soil thermal desorption device is an auger thermal desorption tank containing screw agitation shaft, auger prebake
Tank is set higher than auger thermal desorption tank anterior-posterior horizontal, auger prebake tank in preceding auger thermal desorption tank rear,
Pass through the second angularly disposed sealing chute between preceding auger prebake tank and posterior auger thermal desorption tank
13 are connected with each other, this structure is easy to flowing humous, spiral the stirring of auger prebake tank and auger thermal desorption tank
Mix and helical blade is provided with axis, the hot air inlet 301 and 401 of auger prebake tank and auger thermal desorption tank is set
Put the air outlet 302 of the front end that direction is threadingly advanced in helical blade, auger prebake tank and auger thermal desorption tank
With 402 tail ends for being arranged on blade screw direction of advance.
In embodiment：The water separating pipe of the steam trap connects a separation water cooling case 14, separates water cooling case
The fertile soil that fertile soil thermal desorption device is connected to by pipeline exports, and separates the cooling water in water cooling case as gas recovery
High temperature drying fertile soil cooling humidification water afterwards, after high temperature drying fertile soil cooling humidification as cement kiln alternative materials or
Cement admixture.
Wherein：The air-suction duct is also arranged on the downside thrown and select machine to dish out mouth at the same time.
In embodiment：The vibrating screen is plain net sieve either rotary screen, and oscillating screen is with ground level in 5 to 10 degree
Angle is adjustable to be obliquely installed, and the vibrations of vibrating screen are to move horizontally and jump up and down at the same time.
In embodiment：It is horizontally disposed belt rotating machine that machine is selected in the throwing, and the belt speed of belt rotating machine is adjustable, skin
Take and be horizontally arranged with anti-skid bulge bar, can find an optimal throwing by adjusting speed selects speed.
The outlet of cement kiln tail high warm air at the same time by a controllable valve 15 connect the auger prebake tank and
The hot air inlet of auger thermal desorption tank, first beats controllable valve in the hot wind for starting also to produce without incinerator burning
Open, control controllable valve to reduce air output or closing after the hot wind for thering is incinerator burning to produce.
The step of here is the method using the system, and method includes aging screening rubbish, the step of incineration treatment of garbage
The step of the step of rapid and fertile soil is handled, the aging screening rubbish is by plastic products and fertile soil point from aging rubbish
Separate out and, the step of incineration treatment of garbage is that the plastic products separated are sent into incinerator burning, fertile soil processing
The step of be by the fertile soil separated dry carry out thermal desorption processing；Wherein：
Described separate plastic products and fertile soil is divided into the progress of two steps：The first step is by way of exhausting from vibration
The first light plastic product rubbish is collected in the top suction of sieve；Second step selects machine to dish out by way of oversize to collect second throwing
Light plastic product rubbish, the second light plastic product rubbish are being thrown on the downside of the front for selecting machine to dish out mouth by closely to remote point
Collected in the second light refuse collecting tank not being provided with the second light refuse collecting tank and inorganic heavy material collecting tank；
The method that the fertile soil drying carries out thermal desorption processing is to quote cement kiln tail high-temperature hot-air to add fertile soil
Temperature drying makes its moisture content be down to less than 20%, and moisture content is down to the heat that less than 20% fertile soil produced using incinerator burning
Wind carry out thermal desorption processing, by after thermal desorption exhaust gas be sent into cement kiln carry out burning disposal, by dry produce vapor into
Row gas-water separation, the gas isolated are sent into waste incinerator or cement kiln combustion, and it is de- that the water isolated is used for heat after cooling
Attached high temperature drying fertile soil cools, and reduces dust generation, fertile soil after cooling as cement kiln alternative materials or
Person's cement admixture.
In systems：Fertile soil pre-drying device connects fertile soil thermal desorption device 4 by the second sealing chute 13, described
Fertile soil pre-drying device is an auger prebake tank containing screw agitation shaft, and fertile soil thermal desorption device is one
Auger thermal desorption tank containing screw agitation shaft, auger prebake tank are higher than auger thermal desorption tank anterior-posterior horizontal
Set, auger prebake tank in preceding auger thermal desorption tank rear, preceding auger prebake tank and posterior
It is connected with each other between auger thermal desorption tank by the second angularly disposed sealing chute 13, this structure is easy to stream humous
It is dynamic, helical blade is provided with the screw agitation shaft of auger prebake tank and auger thermal desorption tank, auger is pre-
The hot air inlet 301 and 401 of drying tank and auger thermal desorption tank is arranged on the front end that helical blade is threadingly advanced direction,
The air outlet 302 and 402 of auger prebake tank and auger thermal desorption tank is arranged on the tail of blade screw direction of advance
End.Therefore, fertile soil drying and thermal desorption processing are in the auger prebake tank containing screw agitation shaft and spiral
It is carried out continuously in stirring thermal desorption tank, auger prebake tank and auger thermal desorption tank pass through the second sealing chute pair
Connecing, auger prebake tank is set higher than auger thermal desorption tank anterior-posterior horizontal, wherein：The auger prebake tank
Be provided with helical blade in the screw agitation shaft of auger thermal desorption tank, cement kiln tail hot wind is from auger prebake
The front end that tank helical blade is threadingly advanced direction is sent into, and is sent from the tail end of auger prebake tank blade screw direction of advance
Go out, the front end that the hot wind that incinerator burning produces is threadingly advanced direction from auger thermal desorption tank helical blade is sent into, from spiral shell
The tail end of rotation stirring thermal desorption tank blade screw direction of advance is sent out.The high warm air outlet of cement kiln tail is controllable by one at the same time
Valve 15 connects the hot air inlet of auger prebake tank and auger the thermal desorption tank, is starting not burn also
First controllable valve is opened during the hot wind that stove burning produces, control controllable valve subtracts after the hot wind for having incinerator burning to produce
Few air output or closing.
Wherein：Angle is adjustable is obliquely installed in 5 to 10 degree for the vibrating screen and ground level, and the vibrations of vibrating screen are to do at the same time
Move horizontally and jump up and down；The throwing selects machine to be horizontally disposed with the belt rotating machine of belt, and the belt speed of belt rotating machine can
Adjust, anti-skid bulge bar is horizontally arranged with belt.
In method：The temperature for being sent into the cement kiln tail hot wind of auger prebake tank is 180-260 DEG C, by adjusting
The rotating speed of auger, controls from the fertile soil moisture content of auger prebake tank caudal end egress and is not higher than 20%, be sent into spiral
The hot blast temperature for stirring the incinerator burning generation of thermal desorption tank is 900-1200 DEG C（Degree Celsius）, by adjusting auger
Rotating speed, control fertile soil are not less than 20 minutes with the time that the hot wind that stove burning produces contacts, and are typically 20 to 30 minutes；Together
When by adjusting auger the intake control of hot wind that produces of rotating speed and incinerator burning from auger thermal desorption
The temperature that tank tail end sends out wind is 200-800 DEG C（Degree Celsius）.
In embodiment, about 45% less than 20% is reduced to by by moisture content humous after drying and processing, humic
The tail gas produced in native drying course carries out steam-water separation by steam-water separator, is taken off after the water natural cooling after separation as heat
Attached cooling water humous, the supplement air quantity that the gas after separation is burned as light materials such as plastics.
The inherent advantage of above-described embodiment combination cement kiln, it is proposed that cooperateed with fertile soil and plastics on cement kiln
The technology of disposal, carries out prebake, the fertile soil after drying carries out thermal desorption processing, heat using the waste heat of cement kiln to fertile soil
The heat difference source of active blend or alternative materials of the fertile soil as cement kiln after desorption, prebake and thermal desorption
The thermal energy produced is burned in the waste heat and plastic garbage of cement kiln, incineration residue enters cement kiln raw mill and carries out dispensing.The skill
Art realizes the desorption of fertile soil organic matter using the heat of discarded object itself, in water while cement kiln waste heat is made full use of
The collaboration recycling of the incendive garbage such as fertile soil and plastics in aging rubbish is adequately achieved on stall.
Claims (6)
1. the coprocessing system of fertile soil and plastics on cement kiln in a kind of aging rubbish, including aging screening rubbish are set
Standby, waste incinerator, fertile soil pre-drying device and fertile soil thermal desorption device；Light refuse in screening installation oversize leads to
Cross transmission device and send to waste incinerator and burn, the fertile soil under screening installation sieve is sent to fertile soil prebake by transmission device
Device and fertile soil thermal desorption device carry out drying and thermal desorption processing, it is characterised in that and the screening installation includes vibrating screen,
It is fertile soil collecting tank on the downside of vibrating screen, fertile soil collecting tank connects fertile soil pre-drying device, humic by transmission device
Native pre-drying device connects fertile soil thermal desorption device, is sent out in vibrating screen oversize and is provided with air-suction duct, air draught on the upside of mouth
Pipeline, which is used to send the first light refuse suction in oversize to waste incinerator, to burn, and is sent out in vibrating screen oversize under mouth
Side, which is provided with one, throws and selects machine, throws on the downside of the front for selecting machine to dish out mouth by closely to being far respectively arranged with the second light refuse collecting tank
With inorganic heavy material collecting tank, the hot air inlet connection cement kiln tail hot-blast outlet of the fertile soil pre-drying device, heat
Desorption apparatus hot air inlet connects the hot-blast outlet of waste incinerator, and the air outlet of fertile soil pre-drying device connects a water
Vapour separator, the air outlet of thermal desorption device are connected to cement kiln and carry out the exhaust gas feeding cement kiln after thermal desorption at burning
Reason, the gas separating pipe of steam trap select valve by one or are connected with waste incinerator or are connected with cement kiln.
2. system according to claim 1, it is characterised in that the fertile soil collecting tank is by screw(-type) feeder through first
Chute connection fertile soil pre-drying device is sealed, fertile soil pre-drying device connects fertile soil thermal desorption by the second sealing chute
Device, fertile soil pre-drying device are an auger prebake tanks containing screw agitation shaft, fertile soil thermal desorption device
It is an auger thermal desorption tank containing screw agitation shaft, before auger prebake tank is higher than auger thermal desorption tank
After be horizontally disposed with, be provided with helical blade, spiral shell in the screw agitation shaft of auger prebake tank and auger thermal desorption tank
The hot air inlet of rotation stirring prebake tank and auger thermal desorption tank is arranged on the front end that helical blade is threadingly advanced direction,
The air outlet of auger prebake tank and auger thermal desorption tank is arranged on the tail end of blade screw direction of advance.
3. system according to claim 1, it is characterised in that the water separating pipe of the steam trap connects a separation
Water cooling case, the fertile soil that separation water cooling case is connected to fertile soil thermal desorption device by pipeline export, and separate water cooling case
In cooling water as after gas recovery high temperature drying fertile soil cool down humidification water, high temperature drying fertile soil cooling humidification after
As cement kiln alternative materials or cement admixture.
4. system according to claim 1, it is characterised in that the air-suction duct is also arranged on throwing and selects machine to dish out mouth at the same time
Downside.
5. system according to claim 1, it is characterised in that the vibrating screen is adjustable in 5 to 10 degree angles with ground level
It is obliquely installed, the vibrations of vibrating screen are to move horizontally and jump up and down at the same time.
6. system according to claim 1, it is characterised in that it is horizontally disposed belt rotating machine that machine is selected in the throwing, skin
Belt speed with rotating machine is adjustable, and anti-skid bulge bar is horizontally arranged with belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107350275A (en) * | 2017-09-08 | 2017-11-17 | 北京建筑材料科学研究总院有限公司 | The coprocessing system and method for fertile soil and plastics on cement kiln in a kind of old rubbish |
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| CN107350275A (en) * | 2017-09-08 | 2017-11-17 | 北京建筑材料科学研究总院有限公司 | The coprocessing system and method for fertile soil and plastics on cement kiln in a kind of old rubbish |
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