CN108439763A - A kind of two-period form thin layer sludge drying system - Google Patents
A kind of two-period form thin layer sludge drying system Download PDFInfo
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- CN108439763A CN108439763A CN201810525841.2A CN201810525841A CN108439763A CN 108439763 A CN108439763 A CN 108439763A CN 201810525841 A CN201810525841 A CN 201810525841A CN 108439763 A CN108439763 A CN 108439763A
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- desiccation
- sludge
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- desiccation machine
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
Abstract
The present invention provides a kind of two-period form thin layer sludge drying system, wet mud is delivered to thin layer desiccation machine by wet mud feed pump and carries out first segment desiccation, saturated vapor indirect heat exchange in thin layer desiccation machine in sludge and equipment chuck and remove portion of water, sludge after first segment desiccation falls into linear desiccation machine by chute and carries out second segment desiccation, by in linear desiccation machine chuck and rotor the indirect heat exchange of saturated vapor by remove remaining partial moisture.This system evaporation efficiency is high, and exhaust gas production is small, no foul smell and flour dust overflow, it can be achieved that sludge depth desiccation, reach sludge treatment stabilize, minimizing and innoxious requirement.
Description
Technical field
The present invention relates to sludge drying technique fields, particularly belong to a kind of two-period form thin layer sludge drying system, especially wrap
Containing desiccation machine construction and system composition.
Background technology
Gradually increase with the treatment scale of municipal sewage in recent years, the treating capacity of accessory products sludge is also constantly increasing
It is high.Sludge has the features such as moisture content is high, bulky, unstable, and many difficulties are brought to subsequent burning, landfill, compost.
Thus the desiccation dehydration of sludge has become the necessary process of Treatment of Sludge.
Sludge drying device is divided into direct-type desiccation and indirect type desiccation, and direct-type desiccation is that heat source is allowed directly to be connect with sludge
It touches, by the thermal energy of heat source institute band by the moisture evaporation in sludge, to realize the desiccation of sludge.And indirect type desiccation is heat source
It is not in direct contact with sludge, using the form of indirect heat exchange, by the moisture removal in sludge.
Traditional sludge drying mode and equipment are one-part form desiccation.If in face of high-volume, the technique of depth desiccation
It is required that when, it is required that the volume of equipment will be larger, very high requirement, while high energy consumption, work are proposed to device fabrication and processing
Skill flow is complicated, and most of requirements for being also unable to reach depth desiccation.
Therefore, select the sludge drying system of simple flow, manufacture view, economical rationality dry to handle high-volume, depth
The sludge drying process of change just seems extremely necessary.
Invention content
A kind of two-period form thin layer proposed the purpose of the present invention is to solve disadvantage present in prior art technology
Sludge drying system realizes the quick desiccation of wet mud safety and stability.
Above-mentioned purpose to realize the present invention, the present invention adopt the following technical scheme that：
A kind of two-period form thin layer sludge drying device, the equipment are made of thin layer desiccation machine and linear desiccation machine.
The thin layer desiccation machine includes motor, shell, rotor and scraper, and end cap is equipped with before and after thin layer desiccation machine, internal
Equipped with rotor；The rotor is connect by bearing with drive end bearing bracket and rear end cap, and scraper is provided on the rotor, and scraper will enter
Sludge in thin layer desiccation machine is uniformly coated with straticulation and conveys forward；The shell of desiccation machine includes inner casing and shell, inner casing
Lead to saturated vapor in chuck between shell, by the indirect heat exchange of inner walls realization and internal sludge, realizes sludge
First segment desiccation.
The linear desiccation machine includes motor, shell and rotor, and end cap is equipped with before and after linear desiccation machine, is internally provided with and turns
Son；The rotor of linear desiccation machine is helical axis, is connect with drive end bearing bracket and rear end cap by bearing；Cloth on the rotor of linear desiccation machine
It is equipped with blade, sludge is pushed to be fed forward；The shell of linear desiccation machine includes inner casing and shell, the chuck between inner casing and shell
Interior logical saturated vapor can also lead to saturated vapor in the rotor of linear desiccation machine, by inner walls and rotor outer wall realize with it is interior
The indirect heat exchange of portion's sludge, and realize the second segment desiccation of sludge.
The heat source of thin layer desiccation machine and linear desiccation machine is conduction oil, after exchanging heat out of thin layer desiccation machine and linear desiccation machine
Conduction oil return again to heat-conducting oil heating system and recycled.
Cooling spiral is additionally provided with after linear desiccation machine, the cooling spiral uses the double-shaft spiral of jacketed, leads in chuck
Recirculated cooling water realizes the cooling of sludge by the indirect heat exchange with recirculated cooling water.
It is additionally provided with tail gas condensation device, the tail gas condensation device is made of condenser, demister, exhaust fan.
The present invention also provides a kind of two-period form thin layer sludge drying methods, include the following steps：
(1) wet mud is delivered to progress first segment desiccation in thin layer desiccation machine by given flow；
Wherein enter the wet mud in thin layer desiccation machine under the action of the rotation of rotor and scraper, is uniformly coated into thin
Layer is simultaneously fed forward with certain speed, realization and the saturated vapor indirect heat exchange in thin layer desiccation machine chuck in transmission process,
Portion of water in wet mud is evaporated；Sludge after first segment desiccation is exported from thin layer desiccation machine to be discharged, and is made in gravity
With lower second segment desiccation is carried out into linear desiccation machine by vertical chute；
(2) in second segment desiccation, into sludge and the saturation in linear desiccation machine chuck and rotor of linear desiccation machine
Steam carries out indirect heat exchange, and remaining partial moisture is evaporated in sludge.
(3) sludge after linear desiccation machine desiccation enters subsequent sludge cooling spiral through exit chute under the effect of gravity
It cools down, recirculated cooling water is passed through in the shell chuck of cooling spiral, realize that the cooling of sludge drops by indirect heat exchange
Temperature.
The tail gas evaporated from first segment and second segment sludge drying is pumped under fan action into condenser,
Condenser overhead is equipped with nozzle, is passed through recycle-water and carries out spray condensation, to reach the cooling-down effect of tail gas；It is arranged from condenser
Drop in the on-condensible gas gone out removes in subsequent demister, and final tail gas will be drained into subsequent deodorization by exhaust fan
System carries out Odor control.
The flow direction of evaporation tail gas inversely in the conveying direction of dewatered sludge, done by wind turbine from thin layer by evaporation tail gas in step (1)
Change machine is extracted out, and spray condensation is carried out into subsequent condenser system；
Evaporation tail gas flows to the inversely evaporation tail gas in the conveying direction of dewatered sludge, linear desiccation machine in step (2)
It is introduced into thin layer desiccation machine under the action of wind turbine, then enters subsequently with after the evaporation tail gas mixing in first segment thin layer desiccation
Tail gas condensing system carry out spray condensation process.
The further specific technical solution of the present invention is as follows：
A kind of two-period form thin layer sludge drying system, includes the following steps：
Wet mud through dehydration pre-process is poured onto wet mud through tipper and receives in storehouse, receives orlop portion and balladeur train is arranged
Wet mud broken arch is carried out, prevents sludge from building bridge, and the discharge auger discharging in orlop portion is received to wet mud feed pump by wet mud,
Wet mud is delivered in wet mud storage warehouse through wet mud feed pump and is stored.
Wet mud storage warehouse bottom is arranged balladeur train and carries out wet mud broken arch, prevents sludge from building bridge, in wet mud storage warehouse
Discharge auger discharging of the wet mud through its bottom to wet mud feed pump, wet mud feed pump is conveyed wet mud by given flow
To progress first segment desiccation in thin layer desiccation machine.
Into the wet mud in thin layer desiccation machine under the action of the rotation of rotor and its scraper, can uniformly it be coated into thin
Layer is simultaneously conveyed forward with certain speed, is realized in transmission process and is changed with the saturated vapor indirect type in thin layer desiccation machine chuck
Heat, the portion of water in wet mud are evaporated.The flow direction of tail gas is evaporated inversely in the conveying direction of dewatered sludge, evaporates tail gas quilt
Wind turbine is extracted out from thin layer desiccation machine, and spray condensation is carried out into subsequent condenser system.Sludge after first segment desiccation is from thin
The outlet discharge of layer desiccation machine enters linear desiccation machine by vertical chute under the effect of gravity and carries out second segment desiccation.
In second segment desiccation, into sludge and the saturated vapor in linear desiccation machine chuck and rotor of linear desiccation machine
Indirect heat exchange is carried out, remaining partial moisture is evaporated in sludge.Evaporate the flow direction of tail gas inversely in the conveying direction of dewatered sludge,
Evaporation tail gas in linear desiccation machine is introduced into thin layer desiccation machine under the action of wind turbine, then in first segment thin layer desiccation
After evaporation tail gas mixing spray condensation is carried out into subsequent tail gas condensing system.
Sludge after linear desiccation machine desiccation under the effect of gravity through exit chute enter subsequent sludge cooling spiral into
Row cool, cooling spiral be jacketed double-shaft spiral, it can be achieved that sludge while cooling by smooth delivery of power.It is cold
But it is passed through recirculated cooling water in the shell chuck of spiral, cooling for sludge can be realized by indirect heat exchange.Dirt after cooling
Mud is kept in after drag conveyor is delivered to dewatered sludge feed bin, and dewatered sludge bin outlet is equipped with gate valve, when dewatered sludge is collected into
Gate valve is opened after a certain amount of, and by dewatered sludge discharging to tipper, is transported outward by tipper and carried out subsequent processing.
The tail gas evaporated from first segment and second segment sludge drying is pumped under fan action into condenser,
Condenser overhead is equipped with nozzle, is passed through recycle-water and carries out spray condensation, to reach the cooling-down effect of tail gas.It is arranged from condenser
Drop in the on-condensible gas gone out removes in subsequent demister, and final tail gas will be drained into subsequent deodorization by exhaust fan
System carries out Odor control.
Further, thin layer desiccation machine is made of motor, shell, rotor, scraper.It is equipped with end cap before and after thin layer desiccation machine,
It is internally provided with rotor.The rotor of desiccation machine is connect by bearing with drive end bearing bracket and rear end cap.Scraper is provided on rotor, scraper can
The sludge entered in thin layer desiccation machine is uniformly coated with straticulation and is conveyed forward.The shell of desiccation machine is by cylindrical shape steel plate
It forms, saturated vapor is led in the chuck between inner casing and shell, the indirect heat exchange with internal sludge can be realized by inner walls,
And realize the first segment desiccation of sludge.
Further, linear desiccation machine is made of motor, shell, rotor and scraper.It is equipped with end cap before and after linear desiccation machine.
It is internally provided with rotor, the rotor of linear desiccation machine is helical axis, is connect with drive end bearing bracket and rear end cap by bearing.It is arranged on rotor
There is blade, sludge is pushed to be fed forward.The shell of linear desiccation machine is made of cylindrical shape steel plate, the folder between inner casing and shell
Logical saturated vapor in set, while can also lead to saturated vapor in rotor, it can be realized and inside dirt by inner walls and rotor outer wall
The indirect heat exchange of mud, and realize the second segment desiccation of sludge.
Further, the heat source of thin layer desiccation machine and linear desiccation machine can be replaced conduction oil, from thin layer desiccation machine and line
Property desiccation machine in conduction oil after heat exchange return again to heat-conducting oil heating system and recycled.
Further, cooling spiral uses the double-shaft spiral of jacketed, leads to recirculated cooling water, process and circulating cooling in chuck
The indirect heat exchange of water realizes the cooling of sludge, it is ensured that the delivery safety of dewatered sludge.
Further, tail gas condensing system is made of condenser, demister, exhaust fan.Condenser is cylinder type stainless steel
Equipment, top are equipped with nozzle, can uniformly spray recycle-water from top down, realize tail gas cooling.Demister is that cast is stainless
Steel equipment can remove the drop in on-condensible gas.Wind turbine is centrifugal blower, can drain into the tail gas after condensing demisting subsequently
Deodoration system carry out subsequent processing.
The implementation result of the present invention is as follows：
Of the present invention is a kind of two-period form thin layer sludge drying system, realizes wet mud depth desiccation, reaches sludge
Minimizing, stabilisation and harmless environmental protection requirement.It is continuous to give conveying capacity to wait for that the wet mud of desiccation is pumped by sewage sludge feed
Into in thin layer desiccation machine, the saturated vapor of 1.0MPa is passed through in the shell chuck of thin layer desiccation machine, it will by indirect heat exchange
Partial moisture evaporation in sludge.Sludge after first segment desiccation enters subsequent linear desiccation after the discharge of thin layer desiccation machine
Machine carries out second segment desiccation, is passed through the saturated vapor of 1.0MPa in the shell chuck and rotor of linear desiccation machine, sludge and full
With steam indirect heat exchange, remaining partial moisture is dried in sludge.Sludge after second segment desiccation enter cooling spiral into
Row cools to ensure that the delivery safety of sludge, final dewatered sludge are delivered in dewatered sludge feed bin by drag conveyor and are carried out temporarily
Deposit, when to be stored to a certain amount of discharging to external tipper and transport outward processing.The exhaust gas that evaporation generates is done by wind turbine from thin layer
Change machine and the extraction of linear desiccation machine, spray washing cools down within the condenser, then removes the liquid in on-condensible gas through demister
Drop, and drain into subsequent stench processing system eventually by wind turbine and handled.
Horizontal lamellar desiccation machine coordinates the anhydration system of linear desiccation machine to belong to two-period form indirect type anhydration system, using outer
Portion's heat source such as saturated vapor or conduction oil, by the form of indirect heat exchange by most moisture evaporations in sludge, to real
The depth desiccation of existing sludge, reaches sludge stabilizing, minimizing and innoxious requirement.The technological process is simple, production is stablized,
Equipment processing and manufacturing is relatively easy, is a kind of drying process for the reply high-volume sludge deep desiccation being worthy to be popularized.
Description of the drawings
Fig. 1 is a kind of flow diagram of two-period form thin layer sludge drying system proposed by the present invention.
Fig. 2 is the structural representation for the thin layer desiccation machine that a kind of two-period form thin layer sludge drying system proposed by the present invention uses
Figure.
Fig. 3 is the structural representation for the linear desiccation machine that a kind of two-period form thin layer sludge drying system proposed by the present invention uses
Figure.
Specific implementation mode
The invention will be further described with example below in conjunction with the accompanying drawings, but the present invention is not limited to these instances,
Under the premise of without departing from present inventive concept, so-called any improvement is within the scope of the present invention.
The invention discloses a kind of two-period form thin layer sludge drying system, the thin layer desiccation machine in system includes shell 103
It is equipped with drive end bearing bracket 108 and rear end cap 111 with the front and back end of motor 101, thin layer desiccation machine, is internally provided with the inner casing of thin layer desiccation machine
105 and rotor 106, the rotor 106 of thin layer desiccation machine be placed in inside inner casing 105, the rotor 106 of thin layer desiccation machine by bearing with
Drive end bearing bracket 108 and rear end cap 111 connect, and inerting gas entrance 115 is equipped on drive end bearing bracket 108 and rear end cap 111.Thin layer is dry
The inner casing 105 of change machine is made of the round steel plate of multistage equal length.105 outside of inner casing of desiccation machine is chuck layer, can be led to
Enter saturated vapor or conduction oil as heating agent.Various forms of scrapers 107 are arranged on thin layer desiccation machine rotor 106.Thin layer desiccation
The motor side of machine is equipped with speed reducer 102, and mud inlet 112 and mud mouth 110 are additionally provided on shell.The upper part of the housing of thin layer desiccation machine
Equipped with exhaust outlet 104, steam inlet 113 and steam condensate outlet 114.
In specific implementation process, pass through wet mud feed pump by the wet mud of pretreated moisture content 75%~85%
It is continuously entered in thin layer desiccation machine with given flow, inner casing is uniformly coated under the action of desiccation machine rotor 106 and scraper 107
On 105 inner wall, one layer of wet mud thin layer is formed.Lead to the saturated vapor of 1.0MPa in the steam jacket of thin layer desiccation machine, it is thin
The inner casing 105 of layer desiccation machine provides sufficient heat exchange area, conducts heat to inner wall and by the moisture evaporation in wet mud.
With the rotation of rotor and scraper, sludge is scraped from inner wall and is coated with to form new thin layer again, is constantly scraping, is applying
Cloth is fed forward during forming thin layer, desiccation, and the moisture percentage in sewage sludge after first segment desiccation is usually 30~40%.Thin layer
The evaporation tail gas of desiccation machine is discharged by wind turbine from exhaust outlet 104 from thin layer desiccation machine, into subsequent spray condenser system, and
Subsequent deodorizing process system is ultimately discharged into be handled.In operational process, gas oxygen content is strictly controlled in thin layer desiccation machine,
When online oxygen conten analyser detects that gas oxygen content is more than secure setting in thin layer desiccation machine, deactivation gas will be passed through
Body entrance 115 supplements nitrogen or saturated vapor into desiccation machine, to reduce rapidly oxygen content to safety value, it is ensured that thin layer desiccation machine
Operational safety.Thin layer desiccation machine is discharged by mud mouth 110 in sludge after desiccation, and passes through exit chute under the effect of gravity
Fall into subsequent linear desiccation machine.
The invention discloses a kind of two-period form thin layer sludge drying system, the linear desiccation machine in system includes shell 201
With motor 204, linear desiccation machine is equipped with drive end bearing bracket 205 and rear end cap 206, and inside is linear desiccation machine inner casing 203 and rotor
202, the rotor 202 of linear desiccation machine is placed in inside inner casing 203.The rotor 202 of linear desiccation machine is helical axis, linear desiccation machine
Rotor 202 is connect by bearing with drive end bearing bracket 205 and rear end cap 206, and the rotor of linear desiccation machine is equipped with 214 He of steam inlet
Steam condensate outlet 215.The inner casing 203 of linear desiccation machine is made of the cylindrical shape steel plate of multistage equal length.Linear desiccation machine
203 outside of inner casing is chuck layer, to logical saturated vapor to heat materials inside.The motor side of linear desiccation machine is equipped with speed reducer
211.Shell upper is equipped with steam inlet 212, and lower part is equipped with steam condensate and exports 213.Be additionally provided on linear desiccation machine shell into
Mud mouth 208, supporting leg 210 and mud mouth 209.
In specific implementation process, the sludge after first segment desiccation is entered linear dry by linear desiccation machine mud inlet 208
Change machine, sludge are fed forward under the rotation of linear desiccation machine rotor 202.The saturated vapor of 1.0MPa passes through steam inlet 212
Into in the steam jacket of shell, saturated vapor also enters internal rotor, linear desiccation machine by rotor steam entrance 214 in addition
203 inner wall of inner casing and 202 outer wall of helical rotor the heat exchange area of dewatered sludge is provided jointly, by way of indirect heat exchange after
Continuous dewatered sludge, the moisture percentage in sewage sludge after second segment desiccation are usually arranged as 10%.Steam condensate is from 213 He of condensate outlet
The 215 linear desiccation machines of discharge.The flow direction of tail gas is evaporated inversely in dewatered sludge conveying direction, and evaporation tail gas is taken out under fan action
Cutting edge aligned desiccation machine into thin layer desiccation machine, and mixes with evaporation tail gas in thin layer desiccation machine and is evacuated to subsequent spray together
Condenser system.Linear desiccation machine is discharged in sludge after second segment desiccation from mud mouth 209, into subsequent cooling spiral
It cools down.
In specific implementation process, into about 90 DEG C of the dewatered sludge temperature of cooling spiral, in the shell chuck of cooling spiral
Logical recirculated cooling water, dewatered sludge constantly contact with jackets inner wall in the transmission process of double-shaft spiral and carry out indirect heat exchange, most
Whole dewatered sludge is cooled to≤50 DEG C in cooling spiral.Dewatered sludge after cooling spiral cools down enters drag conveyor,
Dewatered sludge is promoted and is delivered to dewatered sludge feed bin by drag conveyor, collects sludge to after a certain amount of after dewatered sludge feed bin, discharging
Outward transport processing is carried out to tipper.
In specific implementation process, spray condenser system is made of condenser, demister, wind turbine.It is taken out from thin layer desiccation machine
The evaporation tail gas gone out is introduced into condenser, and temperature is about 110 DEG C, and it is about the 5% to 10% of evaporated water usually to evaporate tail gas amount.
Condenser is cylinder stainless steel equipment, and top is equipped with nozzle, can uniformly spray recycle-water from top down, realizes that tail gas is washed
Wash cooling.Exhaust gas temperature after cooling is about 45~50 DEG C.Part aqueous the gas such as ammonia, grease contained in exhaust gas simultaneously
And part dust particles can be washed into shower water, reduce subsequent vent gas treatment burden.Demister is cast stainless steel
Equipment can remove the drop in on-condensible gas.Wind turbine is centrifugal blower, can be drained into the tail gas after condensing demisting subsequent
Deodoration system carries out subsequent processing.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technical solution of invention and design
It is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of two-period form thin layer sludge drying device, it is characterised in that：The equipment is by thin layer desiccation machine and linear desiccation machine
Composition.
2. a kind of two-period form thin layer sludge drying device according to claim 1, it is characterised in that：The thin layer desiccation machine
Including motor, shell, rotor and scraper, it is equipped with end cap before and after thin layer desiccation machine, is internally provided with rotor；The rotor passes through axis
It holds and is connect with drive end bearing bracket and rear end cap, scraper is provided on the rotor, it is uniform that scraper will enter the sludge in thin layer desiccation machine
Coating straticulation and convey forward；The shell of desiccation machine includes inner casing and shell, is led in the chuck between inner casing and shell full
And steam realizes the first segment desiccation of sludge by the indirect heat exchange of inner walls realization and internal sludge.
3. a kind of two-period form thin layer sludge drying device according to claim 1, it is characterised in that：The linear desiccation machine
Including motor, shell and rotor, it is equipped with end cap before and after linear desiccation machine, is internally provided with rotor；Linearly the rotor of desiccation machine is
Helical axis is connect by bearing with drive end bearing bracket and rear end cap；It is disposed with blade on the rotor of linear desiccation machine, pushes sludge forward
Conveying；The shell of linear desiccation machine includes inner casing and shell, leads to saturated vapor in the chuck between inner casing and shell, passes through shell
Inner wall realizes the indirect heat exchange with internal sludge, and realizes the second segment desiccation of sludge.
4. a kind of two-period form thin layer sludge drying device according to claim 3, it is characterised in that：Linear desiccation machine turns
Lead to saturated vapor in son, the indirect heat exchange with internal sludge is realized by inner walls and rotor outer wall, and realizes the of sludge
Two sections of desiccation.
5. a kind of two-period form thin layer sludge drying device according to claim 1, it is characterised in that：Thin layer desiccation machine and line
Property desiccation machine heat source be conduction oil, the conduction oil after exchanging heat out of thin layer desiccation machine and linear desiccation machine returns again to conduction oil and adds
Hot systems are recycled.
6. a kind of two-period form thin layer sludge drying device according to claim 1, it is characterised in that：After linear desiccation machine also
Equipped with cooling spiral, the cooling spiral uses the double-shaft spiral of jacketed, leads to recirculated cooling water in chuck, by cold with cycle
But the indirect heat exchange of water realizes the cooling of sludge.
7. a kind of two-period form thin layer sludge drying device according to claim 1, it is characterised in that：It is additionally provided with tail gas condensing
Device, the tail gas condensation device are made of condenser, demister, exhaust fan.
8. a kind of two-period form thin layer sludge drying method, which is characterized in that include the following steps：
(1) wet mud is delivered to progress first segment desiccation in thin layer desiccation machine by given flow；
Wherein enter the wet mud in thin layer desiccation machine under the action of the rotation of rotor and scraper, it is uniform to be coated with straticulation simultaneously
It is fed forward, is realized in transmission process and the saturated vapor indirect heat exchange in thin layer desiccation machine chuck, wet dirt with certain speed
Portion of water in mud is evaporated；Sludge after first segment desiccation is exported from thin layer desiccation machine to be discharged, under the effect of gravity
Enter linear desiccation machine by vertical chute and carries out second segment desiccation；
(2) in second segment desiccation, into sludge and the saturated vapor in linear desiccation machine chuck and rotor of linear desiccation machine
Indirect heat exchange is carried out, remaining partial moisture is evaporated in sludge.
(3) sludge after linear desiccation machine desiccation is carried out through exit chute into subsequent sludge cooling spiral under the effect of gravity
It cools, recirculated cooling water is passed through in the shell chuck of cooling spiral, cooling for sludge is realized by indirect heat exchange.
9. a kind of two-period form thin layer sludge drying method according to claim 8, it is characterised in that：From first segment and second
The tail gas evaporated in section sludge drying is pumped under fan action into condenser, is equipped with nozzle in condenser overhead, is led to
Enter recycle-water and carry out spray condensation, to reach the cooling-down effect of tail gas；Drop from the on-condensible gas being discharged in condenser
It is removed in subsequent demister, final tail gas will be drained into subsequent deodoration system by exhaust fan and carry out Odor control.
10. a kind of two-period form thin layer sludge drying method according to claim 8, it is characterised in that：Evaporation in step (1)
The flow direction of tail gas inversely in the conveying direction of dewatered sludge, extracted out by wind turbine from thin layer desiccation machine by evaporation tail gas, into subsequent cold
Solidifying system carries out spray condensation；
In step (2) flow direction of evaporation tail gas inversely the evaporation tail gas in the conveying direction of dewatered sludge, linear desiccation machine in wind
It is introduced into thin layer desiccation machine under the action of machine, then enters subsequent tail with after the evaporation tail gas mixing in first segment thin layer desiccation
Gas condenser system carries out spray condensation process.
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Cited By (6)
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|---|---|---|---|---|
| CN110002715A (en) * | 2019-03-22 | 2019-07-12 | 浙江工业大学 | A kind of two-stage sludge drying equipment system |
| CN112573794A (en) * | 2019-09-12 | 2021-03-30 | 广州新致晟环保科技有限公司 | Sludge drying system and method for drying sludge by using same |
| CN113087359A (en) * | 2021-02-22 | 2021-07-09 | 中国石油天然气集团有限公司 | Sludge drying system, sludge drying method and application thereof |
| CN113292221A (en) * | 2021-06-07 | 2021-08-24 | 甘泉 | Sludge drying method and equipment |
| CN114956507A (en) * | 2022-06-01 | 2022-08-30 | 杰瑞环保科技有限公司 | Sludge treatment method and sludge treatment system |
| CN115504651A (en) * | 2022-11-10 | 2022-12-23 | 中国船舶集团有限公司第七一一研究所 | Thin layer drying device |
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| CN110002715A (en) * | 2019-03-22 | 2019-07-12 | 浙江工业大学 | A kind of two-stage sludge drying equipment system |
| CN110002715B (en) * | 2019-03-22 | 2023-11-17 | 浙江工业大学 | Two-stage sludge drying equipment system |
| CN112573794A (en) * | 2019-09-12 | 2021-03-30 | 广州新致晟环保科技有限公司 | Sludge drying system and method for drying sludge by using same |
| CN113087359A (en) * | 2021-02-22 | 2021-07-09 | 中国石油天然气集团有限公司 | Sludge drying system, sludge drying method and application thereof |
| CN113292221A (en) * | 2021-06-07 | 2021-08-24 | 甘泉 | Sludge drying method and equipment |
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