CN105254147A - Triple utilization device and method for exhaust steam waste heat produced during superheat steam drying of sludge - Google Patents
Triple utilization device and method for exhaust steam waste heat produced during superheat steam drying of sludge Download PDFInfo
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- CN105254147A CN105254147A CN201510681435.1A CN201510681435A CN105254147A CN 105254147 A CN105254147 A CN 105254147A CN 201510681435 A CN201510681435 A CN 201510681435A CN 105254147 A CN105254147 A CN 105254147A
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Abstract
The invention relates to a triple utilization device and method for exhaust steam waste heat produced during superheat steam drying of sludge. The device comprises a shaftless screw feeder, a double-shaft stirring dryer, a sludge particle forming machine and the like, wherein the shaftless screw feeder, the double-shaft stirring dryer, the sludge particle forming machine and a net belt dryer are sequentially connected to form a material channel; a heater, the double-shaft stirring dryer, a cycle separator A, a fan A and an air valve B are sequentially connected to form an internal circulation air channel; the shaftless screw feeder, a cyclone separator B, a heat exchanger B and a tail gas washing tower are sequentially connected to form an external air channel; the shaftless screw feeder, a heat exchanger A and a sewage treatment system form a water circulating utilization channel; a heat exchanger B, the fans and the net belt dryer are combined for drying. The device and the method have the advantages that sensible heat and latent heat of the exhaust steam are recovered simultaneously, the device and the method are efficient and energy-saving, and condensation can be effectively prevented; circulating utilization of waste water and zero-pollution exhaust of waste gas are realized; formed sludge can be used for preparing fertilizers, and reutilization of the sludge is realized.
Description
Technical field
The present invention relates to a kind of sludge drying mechanism and method, especially relate to a kind of be drying medium with superheated vapour, exhaust steam residual heat is triple utilizes device and method.
Background technology
Along with Re-search on Urbanization level improves, urban wastewater treatment amount strengthens, and needs the sludge quantity of safe handling day by day to increase.By in by the end of March, 2014, China cities and towns are accumulative builds up sewage work 3622, sewage treatment capacity about 1.53 hundred million m
3/ d, the sludge yield of 80% water ratio is more than 3,000 ten thousand t; 2015, China produces mud (80% water ratio) total amount per year will reach 3,359 ten thousand t; Expect 2018, the sludge yield of 80% water ratio will break through 4,000 ten thousand t(Ruan Chen Min further. directivity thinking [J] of China's specific resistance to filtration industry development. and water purification technology, 2015,34(s1): 1-3.).Mud is a kind of byproduct of Pollution abatement technique, have that water ratio is high, complicated component, containing features such as a large amount of fatal microorganisms, and easily cause secondary pollution, carrying out drying treatment to it is the prerequisite realizing sewage sludge harmlessness, minimizing and recycling, improve its added value through secondary treatment after drying sludge, it is recycled.Traditional sludge process comprises the modes such as burning, landfill, compost, burns because moisture percentage in sewage sludge high economy is bad and easily produce the materials such as dioxin, landfill land occupation and easily cause secondary pollution, should not be directly used in compost in mud containing heavy metal.
Drying is a kind of operation of high energy consumption, and traditional drying adopts hot blast as drying medium usually, shortcomings such as there is oxygenolysis, catch fire, explode and energy consumption is high.Superheat steam drying is as the novel dried mode of one, and it refers to and utilizes superheated vapour directly contact with material and remove the operation of moisture.Advantage that superheated vapour has that specific heat capacity is large, heat and mass transfer coefficient is large and latent heat is large etc., therefore be that drying medium carries out needed for drying that mass rate is little, speed is fast, the time is short, has significant energy-saving effect with superheated vapour.Superheat steam drying tail gas is all steam, has a large amount of latent heat, and therefore can superheated vapour realize energy-conservation key is the unnecessary exhaust steam how utilizing drying process to produce economically.According to documents and materials (Zhang Xukun, Sun Ruichen, Wang Xuecheng etc. sludge superheated vapor thin layer drying characteristic and drying model build [J]. Transactions of the Chinese Society of Agricultural Engineering, 2014,30(14): 258-266.) known, there is condensing characteristic in the superheat steam drying starting stage, and this characteristic is negative for drying process, because vapor condenses makes the water ratio of material increase, extend the time of whole drying process.From Fig. 5 in document and sludge superheated vapor initial stage of drying drying curve, mud is under 160 ~ 280 DEG C of superheat steam drying conditions, and the initial condensation time, at 40 ~ 15s etc. this did not just make the whole drying process time increase, moisture percentage in sewage sludge increases, thus adds system energy consumption.
The water ratio of usual dewatered sludge up to about 80%, if by the drying sludge of 1 ton moisture 80% to moisture 20%, by the high temperature exhaust steam of generation 0.75 ton.If high temperature exhaust steam residual heat can be utilized to carry out preheating and multiple utilization to material, achieve energy-conservation on the one hand, shorten time of drying on the other hand, improve drying efficiency, furthermore achieved that energy-conservation.In addition, can discharge a large amount of latent heat when steam is become liquid phase by gas phase, after vapor condensation Cheng Shui, liquid water temperature is higher, if can reclaim its sensible heat significantly can reduce energy consumption.
The dry exhaust steam residual heat of current sludge superheated vapor utilizes device and method as follows:
Chinese patent CN201530772U discloses a kind of sludge superheated vapor drying system of two-stage paddle dryer, this system is burned after drying sludge, burn the thermal source of steam as whole drying of generation, the excess steam that secondary blade dryer produces is used for one-level blade dryer and carries out drying, the mode of indirect heat exchange is adopted to utilize steam cycle, energy-efficient, finally waste is processed, achieve material zero release, no pollution.But, one-level blade dryer produce steam after treatment simple fail for other drying processs for sludge incineration and mud fail recycling.
Chinese patent CN1686876A discloses a kind of superheat steam drying method and drying installation thereof of mud, the tail gas produced by utilizing drying sludge and water or the fluent meterial such as freonll-11, methyl alcohol carry out heat exchange, water after heat exchange through heating after for drying sludge, and the tail gas after heat exchange becomes the saturated vapor water mixture that temperature is about 100 DEG C, waste large energy by directly discharging after the saturated vapor water mixture process of high temperature.
Chinese patent CN101823830A discloses a kind of sludge drying mechanism and drying means of superheated vapour closed cycle, the tail gas part produced is used for a predrying part and is used for internal recycle, reduce energy consumption for drying in drying process.But this device does not recycle the tail gas that pre-drying process produces, and does not also reclaim the sensible heat of water of condensation.
Chinese patent CN102260033A and CN102276131A also discloses a kind of secondary steam compressed drying method of sludge, in drying process, mud and oil are mixed in proportion, its grade is improved by carrying out compression to secondary steam, owing to there is non-condensable gases in secondary steam and engine efficiency impact by compression, whole compression process power loss is comparatively large, causes energy consumption higher; Drying process oil mixes with mud, although be separated both after drying, be difficult to thoroughly be separated both, and then have impact on the recycling of mud.
The superheat steam drying method that can reuse and device disclosed in Chinese patent CN101822933A, utilize the thought that energy multi-level utilizes, first step system adopts pressure superheat steam drying, and its tail gas produced is used for rear stage dehumidification system and uses, the like.Along with the increase of progression, dehumidification system becomes increasingly complex, and equipment investment cost increases, and the larger temperature difference of progression to reduce drying effect gradually poorer, adopt pressure superheated vapour to require higher to security of system.
Existing sludge superheated vapor exhaust steam residual heat Application way and device are difficult to fully recycle exhaust steam sensible heat and latent heat simultaneously.Wherein, prior art cannot reclaim the sensible heat of superheated vapour water of condensation mostly.The method extraneous factor such as engine efficiency, the exhaust steam purity impact by compression being improved exhaust steam grade by vapour compression is comparatively large, and overall thermal efficiency is not high.In addition, dried mud adopts traditional sludge treatment process to process mostly, is difficult to recycle mud.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of sludge superheated vapor, dry exhaust steam residual heat is triple utilizes device and method, it can recycle the exhaust steam sensible heat of sludge superheated vapor drying generation and latent heat simultaneously on the one hand, prevent condensation, improve drying efficiency, energy-efficient; On the other hand can be shaping to dried mud, the mud after shaping may be used for preparation gardens, highway planting granulated fertilizer after the drying, realizes recycling sludge recycling.
To achieve these goals, the technical solution used in the present invention is:
A kind of sludge superheated vapor is dry, and exhaust steam residual heat is triple utilizes device, comprise vapour generator, shaftless screw feeder, air valve, well heater, Double shaft stirring drying machine, mud granule forming machine, mesh dryer, tail gas washing tower, cyclonic separator (A, B), blower fan (A, B), interchanger (A, B) and Sewage treatment systems, it is characterized in that: described shaftless screw feeder skin has a chuck, chuck is provided with chuck steam inlet, chuck steam outlet and condensation-water drain, and shaftless screw feeder is provided with steam drain; Shaftless screw feeder discharge port, cyclonic separator B discharge port are connected with Double shaft stirring drying machine opening for feed simultaneously, Double shaft stirring discharge hole of drying machine, cyclonic separator A discharge port are connected with mud granule forming machine opening for feed simultaneously, mud granule forming machine discharge port is connected with mesh belt dry machine inlet capable, shaftless screw feeder, Double shaft stirring drying machine, mud granule forming machine, mesh dryer formation circulation road.
Further, described heater outlet is connected with Double shaft stirring drying machine steam inlet by pipeline, Double shaft stirring drying machine steam drain is connected with cyclonic separator A import, cyclonic separator A steam outlet is connected with blower fan A import by pipeline, blower fan A outlet is divided into two-way by pipeline, lead up to after air valve A and be connected with shaftless screw feeder chuck steam inlet, separately lead up to after air valve B and be connected with heater inlet, well heater, Double shaft stirring drying machine, cyclonic separator A, blower fan A and air valve B form internal recycle gas channel.
Further, described shaftless screw feeder steam drain is connected with cyclonic separator B import by pipeline with chuck steam outlet simultaneously, cyclonic separator B steam outlet is connected with interchanger B hot-fluid medium entrance by pipeline, interchanger B hot-fluid media outlet is connected with tail gas washing tower inlet exhaust gas by pipeline, and shaftless screw feeder, cyclonic separator B, interchanger B, tail gas washing tower form outer gas channel.
Further, described shaftless screw feeder condensation-water drain is connected with interchanger A hot-fluid medium entrance by pipeline, interchanger A hot-fluid media outlet is connected with Sewage treatment systems import, Sewage treatment systems one exports and is connected with interchanger A cold flow medium entrance, surrounding environment is led in another outlet, interchanger A cold flow media outlet is connected with vapour generator import by pipeline, and steam generator outlet is connected to air valve C by pipeline, forms condensate water circulatory and utilizes passage.Pipeline after air valve C converges with the pipeline after air valve B and is connected with heater inlet.
Further, described interchanger B cold flow media outlet is connected with blower fan B import, and blower fan B outlet is connected with mesh dryer blast inlet, and interchanger B, blower fan, mesh dryer form combination drying.
Further, described mesh dryer air outlet is connected with tail gas washing tower inlet exhaust gas.
The dry exhaust steam residual heat of sludge superheated vapor is triple utilizes the triple Application way of the dry exhaust steam residual heat of the sludge superheated vapor of device, the exhaust steam residual heat that sludge superheated vapor drying process produces is realized step and repeatedly utilizes.It is characterized in that:
(1) the high temperature exhaust steam that mud Double shaft stirring drying machine produces is passed into shaftless screw feeder and thermal pretreatment is carried out to mud, avoid mud to enter Double shaft stirring drying machine and produce condensation phenomenon, realize the first time utilization of high temperature exhaust steam residual heat;
(2) the further heat exchange in vapour-gas interchanger of the exhaust steam through shaftless screw feeder utilized, add the thermal source of warm air as the drying of mud Double shaft stirring drying machine dry aftershaping granule sludge, the second time realizing exhaust steam residual heat utilizes;
(3) the further heat exchange in water-water heat exchanger of the water of condensation in shaftless screw feeder is utilized, for heating the water after Sewage treatment systems process, water after heating is used for vapour generator and produces steam, reclaim exhaust steam (becoming water of condensation) sensible heat, the third time indirectly realizing exhaust steam residual heat utilizes;
(4) tail gas that vapour-gas interchanger and granule sludge drying process produce is passed into tail gas washing tower, realize drying process non-pollution discharge.
The invention has the beneficial effects as follows:
1. drying sludge take superheated vapour as drying medium, avoid the danger such as the oxidation of warm air drying appearance under the high temperature conditions, decomposition, burning and blast, superheated vapour heat and mass transfer coefficient is large, specific heat capacity large, and required mass rate is little, drying efficiency is high, energy-efficient.
2. by blower fan A, a part of exhaust steam is turned back to Double shaft stirring drying machine after the exhaust steam that the drying of Double shaft stirring drying machine produces is separated by cyclonic separator A dedusting, the exhaust steam after heating is reused for drying, achieves the recycle of steam; Remainder exhaust steam to pump in shaftless screw feeder chuck to mud raw material preheating, effectively prevent the dry initial stage to produce condensation.
3. the pre-thermogenetic water of condensation of shaftless screw feeder is through interchanger A heat exchange, for heating the sewage after Sewage treatment systems process, water after heating is for generation of steam, the sensible heat of whole process to water of condensation reclaims, achieve the recycle of water, reduce the energy consumption producing steam.
4. enter into mud granule forming machine through the dried sludge with low moisture content of Double shaft stirring drying machine shaping to mud, shaping mud can be used for preparation gardens, highway planting granulated fertilizer after drying, achieve innoxious, minimizing and the resource utilization of mud, improve the added value of mud, there is the feature of Sustainable development.
5. the pre-thermogenetic steam of shaftless screw charging machine enters in interchanger with non-condensable gases after cyclonic separator B dedusting is separated, mesh dryer is passed into after freezing air and high-temperature gas heat exchange, mesh dryer is dried the mud granule after shaping, effectively prevent mud and in moulding process, produces condensation and make the problem that its water ratio increases.
6. whole drying installation achieves exhaust steam residual heat three utilizations, greatly reduces energy consumption, energy-efficient." waste water " that produces in drying process enters Sewage treatment systems process, and a part is used for recycle, and a part enters surrounding environment; " waste gas " discharges after tail gas washing tower process, achieves no pollution.
Accompanying drawing explanation
Fig. 1 is drying installation structural representation of the present invention.
Wherein, 1. vapour generator, 2. shaftless screw feeder, 2-1, 2-2, 2-3, 2-4, 2-5, 2-6 is respectively the opening for feed of shaftless screw feeder, chuck steam inlet, condensation-water drain, discharge port, steam drain, chuck steam outlet, 3A, 3B, 3C is air valve, 4. well heater, 5. Double shaft stirring drying machine, 5-1, 5-2, 5-3, 5-4 is respectively the opening for feed of Double shaft stirring drying machine, steam inlet, discharge port, steam drain, 6. mud granule forming machine, 7. mesh dryer, 7-1, 7-2, 7-3, 7-4 is respectively the opening for feed of mesh dryer, blast inlet, discharge port, air outlet, 8. tail gas washing tower, 9A, 9B is cyclonic separator, 10A, 10B is blower fan, 11A, 11B is interchanger, 12. Sewage treatment systemss.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of sludge superheated vapor is dry, and exhaust steam residual heat is triple utilizes device, comprises vapour generator 1, shaftless screw feeder 2, air valve (3A, 3B, 3C), well heater 4, Double shaft stirring drying machine 5, mud granule forming machine 6, mesh dryer 7, tail gas washing tower 8, cyclonic separator (9A, 9B), blower fan (10A, 10B), interchanger (11A, 11B) and Sewage treatment systems 12.Shaftless screw feeder 2 is provided with opening for feed 2-1, discharge port 2-4, steam drain 2-5, and shaftless screw feeder 2 skin has a chuck, and chuck is provided with chuck steam inlet 2-2, condensation-water drain 2-3 and chuck steam outlet 2-6; Shaftless screw feeder 2 discharge port 2-4, cyclonic separator 9B discharge port are connected with Double shaft stirring drying machine 5 opening for feed 5-1 simultaneously, Double shaft stirring drying machine 5 discharge port 5-3, cyclonic separator 9A discharge port are connected with mud granule forming machine 6 opening for feed simultaneously, mud granule forming machine 6 discharge port is connected with mesh dryer 7 opening for feed 7-1, and shaftless screw feeder 2, Double shaft stirring drying machine 5, mud granule forming machine 6, mesh dryer 7 are in turn connected to form logistics corridor; Double shaft stirring drying machine 5 steam outlet 5-4 is connected with cyclonic separator 9A import, cyclonic separator 9A steam outlet is connected with blower fan 10A import by pipeline, blower fan 10A outlet is divided into two-way by pipeline, air valve 3A of leading up to is connected with shaftless screw feeder 2 chuck steam inlet 2-2, air valve 3B of separately leading up to is connected with well heater 4 import, and well heater 4, Double shaft stirring drying machine 5, cyclonic separator 9A and blower fan 10A are in turn connected to form internal recycle gas channel; Shaftless screw feeder 2 steam drain 2-5 is connected with cyclonic separator 9B import by pipeline with chuck steam outlet 2-6 simultaneously, cyclonic separator 9B steam outlet is connected with interchanger 11B hot-fluid medium entrance by pipeline, interchanger 11B hot-fluid media outlet is connected with tail gas washing tower 8 import by pipeline, forms outer gas channel; Shaftless screw feeder 2 water of condensation 2-3 outlet is connected with interchanger 11A hot-fluid medium entrance by pipeline, interchanger 11A hot-fluid media outlet is connected with Sewage treatment systems 12 import, Sewage treatment systems 12 1 outlet is connected with interchanger 11A cold flow medium entrance, surrounding environment is led in another outlet, interchanger 11A cold flow media outlet is connected with vapour generator 1 import by pipeline, vapour generator 1 exports and is connected to air valve 3C by pipeline, forms condensate water circulatory and utilizes passage; Pipeline after air valve 3C converges with the pipeline after air valve 3B and is connected with well heater 4 import; Interchanger 11B cold flow media outlet is connected with the blast inlet 7-2 of mesh dryer 7 by pipeline, and mesh dryer 7 air outlet 7-4 is connected with tail gas washing tower 8 import, and interchanger 11B, blower fan 10B, mesh dryer 7 form combination drying.
The triple Application way of the dry exhaust steam residual heat of sludge superheated vapor the exhaust steam residual heat that sludge superheated vapor drying process produces is realized step repeatedly utilize.First, the high temperature exhaust steam that mud Double shaft stirring drying machine 5 produces is passed into shaftless screw feeder 2 pairs of mud and carry out thermal pretreatment, avoid mud to enter Double shaft stirring drying machine 5 and produce condensation phenomenon, realize the first time utilization of high temperature exhaust steam residual heat; Secondly, the further heat exchange in vapour-gas interchanger 11B of the exhaust steam through shaftless screw feeder 2 utilized, add the thermal source of warm air as the drying of mud Double shaft stirring drying machine 5 dry aftershaping granule sludge, the second time realizing exhaust steam residual heat utilizes; Again, the further heat exchange in water-water heat exchanger 11A of water of condensation in shaftless screw feeder 2 is utilized, for heating the water after Sewage treatment systems 12 processes, water after heating is used for vapour generator 1 and produces steam, reclaim exhaust steam (becoming water of condensation) sensible heat, the third time indirectly realizing exhaust steam residual heat utilizes; Finally, the tail gas that vapour-gas interchanger 11B and granule sludge drying process produce is passed into tail gas washing tower 8, realizes drying process non-pollution discharge.
During work, add suitable quantity of water to vapour generator in advance, produce steam.Open air valve 3A, 3C, pass into steam to system, preheating is carried out to system.After system warm-up, heater 4 pairs of steam heat, superheated vapour is become after steam heating, after temperature reaches design temperature, mud raw material is added from shaftless screw charging machine 2 opening for feed 2-1, steam in shaftless screw feeder 2 chuck carries out preheating to mud, prevent mud from the dry initial stage, condensation occurring and water ratio is increased, cause extend time of drying, the mud after preheating enters Double shaft stirring drying machine 5 from shaftless screw charging machine 2 discharge port 2-4 through Double shaft stirring drying machine 5 opening for feed 5-1.
Mud is moisture evaporative removal gradually under the stirring and superheated vapour heat of Double shaft stirring drying machine 5, produces a large amount of steam, and dried mud enters mud granule forming machine 6 from Double shaft stirring drying machine 5 discharge port 5-3.Steam enters cyclonic separator 9A from Double shaft stirring drying machine 5 steam drain 5-4, after dedusting is separated, steam is divided into two-way after the guiding of blower fan 10A, now open air valve 3B, close gas check valve 3C, a part of steam enters in Double shaft stirring drying machine 5 and carries out cyclic drying, later stage is without the need to passing into new superheated vapour, unnecessary steam passes in shaftless screw charging machine 2 through air valve 3A, carries out preheating to mud raw material, and the first time achieving exhaust steam residual heat utilizes.Now from cyclonic separator 9A, isolated solid enters into mud granule forming machine 6.
Steam in shaftless screw charging machine 2 is to after mud preheating, and condensable gases is condensed into water, and non-condensable gases is discharged from chuck steam outlet 2-6 and entered cyclonic separator 9B.Now, sludge part moisture evaporation after preheating, steam enters cyclonic separator 9B from shaftless screw charging machine 2 steam drain 2-5, the gas be separated through dedusting enters in interchanger 11B, from cyclonic separator 9B, isolated solid enters into Double shaft stirring drying machine 5, the water of condensation that warm produces is discharged from condensation-water drain 2-3 and is entered interchanger 11A, enter in Sewage treatment systems 12 with after the cold water added in advance (room temperature) heat exchange, water of condensation after Sewage treatment systems 12 processes is close to room temperature, a part is used for the sensible heat that the later stage reclaims water of condensation, finally enter vapour generator 1 and produce steam, steam is used for next drying process, redundance water is discharged in surrounding environment.The sensible heat of this process to water of condensation reclaims, and achieves the recycle of water, reduces the energy consumption producing steam.
The excess steam that preheating mud produces and non-condensable gases temperature after interchanger 11B heat exchange reduces, and condensable gases is condensed into water, and non-condensable gases passes into tail gas washing tower 8, emptying after treatment; Meanwhile, the tail gas that mesh dryer 7 produces enters tail gas washing tower 8, emptying after treatment.Whole process implementation " tail gas " non-pollution discharge.
The mud granule temperature shaping through mud granule forming machine 6 reduces, and easily produces condensation when running into freezing air.The excess steam utilizing interchanger 11B to produce preheating mud and air carry out heat exchange, air temperature after heat exchange raises, warm air passes into mesh dryer 7 and dries shaping mud granule under the guiding of blower fan 10B, prevents that condensation causes its water ratio to increase.Mud granule through drying may be used for preparation gardens, highway planting fertilizer, not only achieves sewage sludge harmlessness, minimizing, also achieves the resource utilization recycling of mud, walks sustainable development path.
Whole device achieves the dry exhaust steam residual heat of sludge superheated vapor and utilizes for three times.Drying process, by reclaiming exhaust steam sensible heat and latent heat simultaneously, prevents from producing condensation in drying process, shortens time of drying; Only need pass into superheated vapour in the starting stage in drying process, later stage steam cycle uses, and decreases the input of thermal source, reduces energy consumption; Different from traditional sludge treatment process, the mud after this device process can be used as the raw material of preparation gardens, highway planting fertilizer, achieves recycling sludge recycling; The waste water part produced in drying carries out recycle, and a part is discharged into surrounding environment, and waste gas discharges after treatment, achieves no pollution.
Claims (2)
1. dry exhaust steam residual heat is triple utilizes device for a sludge superheated vapor, comprise vapour generator, shaftless screw feeder, air valve (A, B, C), well heater, Double shaft stirring drying machine, mud granule forming machine, mesh dryer, tail gas washing tower, cyclonic separator (A, B), blower fan (A, B), interchanger (A, B) and Sewage treatment systems, it is characterized in that:
Described shaftless screw feeder skin has a chuck, and chuck is provided with chuck steam inlet, chuck steam outlet and condensation-water drain, and shaftless screw feeder is provided with steam drain;
Described shaftless screw feeder discharge port, cyclonic separator B discharge port are connected with Double shaft stirring drying machine opening for feed simultaneously, Double shaft stirring discharge hole of drying machine, cyclonic separator A discharge port are connected with mud granule forming machine opening for feed simultaneously, mud granule forming machine discharge port is connected with mesh belt dry machine inlet capable, shaftless screw feeder, Double shaft stirring drying machine, mud granule forming machine, mesh dryer formation circulation road;
Described heater outlet is connected with Double shaft stirring drying machine steam inlet by pipeline, Double shaft stirring drying machine steam drain is connected with cyclonic separator A import, cyclonic separator A steam outlet is connected with blower fan A import by pipeline, blower fan A outlet is divided into two-way by pipeline, lead up to after air valve A and be connected with shaftless screw feeder chuck steam inlet, separately lead up to after air valve B and be connected with heater inlet, well heater, Double shaft stirring drying machine, cyclonic separator A, blower fan A and air valve B form internal recycle gas channel;
Described shaftless screw feeder steam drain is connected with cyclonic separator B import by pipeline with chuck steam outlet simultaneously, cyclonic separator B steam outlet is connected with interchanger B hot-fluid medium entrance by pipeline, interchanger B hot-fluid media outlet is connected with tail gas washing tower import, and shaftless screw feeder, cyclonic separator B, interchanger B, tail gas washing tower form outer gas channel;
Described shaftless screw feeder condensation-water drain is connected with interchanger A hot-fluid medium entrance by pipeline, interchanger A hot-fluid media outlet is connected with Sewage treatment systems import, Sewage treatment systems one exports and is connected with interchanger A cold flow medium entrance, surrounding environment is led in another outlet, interchanger A cold flow media outlet is connected with vapour generator import by pipeline, steam generator outlet is connected to air valve C by pipeline, forms condensate water circulatory and utilizes passage; Pipeline after air valve C converges with the pipeline after air valve B and is connected with heater inlet;
Described interchanger B cold flow media outlet is connected with blower fan B import, and blower fan B outlet is connected with mesh dryer blast inlet by pipeline, and interchanger B, blower fan, mesh dryer form combination drying; Described mesh dryer air outlet is connected with tail gas washing tower import.
2. utilize the triple Application way of the dry exhaust steam residual heat of the sludge superheated vapor of device for the dry exhaust steam residual heat of sludge superheated vapor of claim 1 is triple, it is characterized in that:
(1) the high temperature exhaust steam that mud Double shaft stirring drying machine produces is passed into shaftless screw feeder and thermal pretreatment is carried out to mud, avoid mud to enter Double shaft stirring drying machine and produce condensation phenomenon, realize the first time utilization of high temperature exhaust steam residual heat;
(2) the further heat exchange in vapour-gas interchanger of the exhaust steam through shaftless screw feeder utilized, add the thermal source of warm air as the drying of mud Double shaft stirring drying machine dry aftershaping granule sludge, the second time realizing exhaust steam residual heat utilizes;
(3) the further heat exchange in water-water heat exchanger of the water of condensation in shaftless screw feeder is utilized, for heating the water after Sewage treatment systems process, water after heating is used for vapour generator and produces steam, reclaim exhaust steam (becoming water of condensation) sensible heat, the third time indirectly realizing exhaust steam residual heat utilizes;
(4) tail gas that vapour-gas interchanger and granule sludge drying process produce is passed into tail gas washing tower, realize drying process non-pollution discharge.
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Cited By (10)
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| CN106045274A (en) * | 2016-07-21 | 2016-10-26 | 山东博润工业技术股份有限公司 | MVR belt sludge drying machine |
| CN106517727A (en) * | 2016-12-26 | 2017-03-22 | 南昌航空大学 | Sludge two-grade united energy-saving drying device and method |
| CN106517726A (en) * | 2016-12-26 | 2017-03-22 | 南昌航空大学 | Two-stage sludge drying device and method |
| CN106904812A (en) * | 2017-03-27 | 2017-06-30 | 张秀青 | It is a kind of to dry the process that oil-sand cures thin mine tailing |
| CN108328901A (en) * | 2018-03-29 | 2018-07-27 | 天津大学 | A kind of sludge drying mechanism integrated based on waste heat |
| CN108826271A (en) * | 2018-07-05 | 2018-11-16 | 伊婕 | A kind of superheat steam drying device |
| CN108981372A (en) * | 2018-07-05 | 2018-12-11 | 伊婕 | Highly effective drying system |
| CN109133572A (en) * | 2017-06-15 | 2019-01-04 | 广州新致晟环保科技有限公司 | The purification of exhaust gas for sludge drying and heat recovery system and method |
| CN109141064A (en) * | 2017-06-15 | 2019-01-04 | 广州新致晟环保科技有限公司 | Tail gas clean-up and heat recovery system and method for Treatment of Sludge |
| CN111138067A (en) * | 2019-12-30 | 2020-05-12 | 江苏绿威环保科技有限公司 | Dryer waste heat recovery system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570388A (en) * | 2009-05-26 | 2009-11-04 | 华电滕州新源热电有限公司 | Harmless recycling treatment process for urban sludge |
| CN101774743A (en) * | 2010-01-26 | 2010-07-14 | 沈阳航空工业学院 | Latent heat recoverable multi-phase change sludge drying method and device |
| KR20120094378A (en) * | 2011-02-16 | 2012-08-24 | 고등기술연구원연구조합 | Apparatus and method of a waste heat recovering for solid-liquid slurry from organic sludges |
| CN205133368U (en) * | 2015-10-21 | 2016-04-06 | 南昌航空大学 | Triple devices that utilize of mud superheated steam drying exhaust steam waste heat |
-
2015
- 2015-10-21 CN CN201510681435.1A patent/CN105254147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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