CN110451767A - Sludge drying system - Google Patents
Sludge drying system Download PDFInfo
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- CN110451767A CN110451767A CN201910783089.6A CN201910783089A CN110451767A CN 110451767 A CN110451767 A CN 110451767A CN 201910783089 A CN201910783089 A CN 201910783089A CN 110451767 A CN110451767 A CN 110451767A
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- 239000010802 sludge Substances 0.000 title claims abstract description 272
- 238000001035 drying Methods 0.000 title claims abstract description 102
- 238000000465 moulding Methods 0.000 claims abstract description 47
- 238000002156 mixing Methods 0.000 claims abstract description 45
- 239000011261 inert gas Substances 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims description 19
- 238000012546 transfer Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 239000002918 waste heat Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 11
- 238000004064 recycling Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000010801 sewage sludge Substances 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000010865 sewage Substances 0.000 description 8
- 230000018044 dehydration Effects 0.000 description 7
- 238000006297 dehydration reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of sludge drying systems.The sludge drying system includes: sludge storage bin；There is mixing device the first sludge inlet, the second sludge inlet and the outlet of sludge mixing, the first sludge inlet to be connected with sludge storage bin；Sludge drying machine, interior to be equipped with molding machine, there is sludge drying machine sludge mixing entrance, desiccation molding sludge outlet, inert gas entrance and inert gas outlet, sludge mixing entrance to be connected with the outlet of sludge mixing；Sorting unit, with desiccation molding sludge inlet, the first drier outlet and the second drier outlet, desiccation forms sludge inlet and is connected with desiccation molding sludge outlet, and the second drier outlet is connected with the second sludge inlet.The sludge drying system processing capacity is big, outlet moisture percentage in sewage sludge is easy to adjust, energy consumption is low, no added, pollution-free, can be realized sludge reduction, innoxious, recycling treatment disposition, and outlet sludge can satisfy the requirement that recycling sludge utilizes.
Description
Technical field
The present invention relates to sludge drying processing technology fields, specifically, the present invention relates to sludge drying systems.
Background technique
With domestic city progress faster, treatment rate of domestic sewage is gradually promoted, and the sludge of municipal sewage plant is total
Amount also sharply increases.Data introduction according to the study, the sludge yield of the following municipal sewage plant, 3 years China increase speed with 4%
Degree increases.The year two thousand twenty is expected, it is expected that 60,000,000 tons of sludge will be generated every year.The sludge of sewage treatment plant is after preliminary hydro-extraction
Moisture content usual 80% or so, volume is big, is unfavorable for transporting and handle, is easy corruption, stink is big, has seriously endangered environment peace
Entirely.
The main whereabouts of the sewage plant domestic sludge in China is garbage loading embeading at present, by mud decrement, stabilization and nothing
Aspect after evilization processing as comprehensive utilization of resources is also very poor.It is a large amount of dirty with the continuous improvement of wastewater treatment rate
Mud, which is filled, brings huge burden to refuse landfill, and it is also more and more limited to fill place.
Sludge either fills, or burning or resource utilization, has strict demand to indexs such as moisture content." cities and towns
Sludge of sewage treatment plant disposes blended landfill shale " (GBT23485-2009) require moisture percentage in sewage sludge < 60%；" town sewage
Treatment plant's sludge treatment afforestation shale " (GBT23486-2009) require moisture percentage in sewage sludge < 40%；" urban wastewater treatment
Factory's sludge treatment is individually burned with shale " self-holding moisture percentage in sewage sludge < 50% burned of (GBT24602-2009) requirement, Low Temperature Thermal
Value > 5000kJ/kg；" urban sewage treatment plant sludge dispose brickmaking shale " (GBT23485-2009) require moisture percentage in sewage sludge <
40%.
After sludge dehydrating and drying, moisture content is reduced, volume reduces about 4~5 times, and surplus materials is more stable after desiccation,
Foul smell and causal organism are greatly removed, and calorific value and nutritional ingredient are retained.Accordingly, it can be said that sludge drying is
The premise and key of specific resistance to filtration technology.Sludge dehydrating and drying can be divided into: natural desiccation, mechanical dehydration and heat drying.From
The factors such as right desiccation climate, place restrict, and have not adapted to sludge quantity increasing today substantially；Mechanical dehydration, by
It is high in mud extraction moisture content, it is not able to satisfy the aqueous requirement of present sludge terminal processes, it can only be as the pre- place before sludge heat drying
Reason；The advantages of heat drying is with its own is that the following sludge drying is de- such as the advantages that high-efficient, treating capacity is big, high degree of automation
The main direction of development of water technology.
In research and development on sludge disposal technology, the phenomenon that generally existing " heavy equipment, light industry skill ".Therefore sludge heat drying
Although there is many different treatment process, the difference of these treatment process essentially consists in the difference of sludge drying device, whole
Comprehensive energy consumption difference is little.In order to further decrease the heat consumption of specific resistance to filtration, in addition to using efficient sludge drying
Equipment, it is also necessary to develop a kind of new process route, enhance the systematicness of sludge heat drying technique.
Currently, sludge heat drying can divide low temperature desiccation, high temperature desiccation by operating procedure temperature.Low temperature desiccation, generally micro-
Negative pressing operation is directly contacted using a large amount of low-temperature circulating gas with sludge, the main unsaturation using water vapour in dry air
Degree takes away moisture, realizes sludge drying.Low temperature drying process is generally coupled with heat pump techniques at present, using belt-type drying
Machine allows Cryogenic air directly to carry out desiccation to sludge.The major defect of the technique has: desiccation temperature is low, cannot play to sludge
The effect of sterilizing；Belt-type drying efficiency is relatively low；Heat pump makes electrotransformation for heat or cooling capacity desiccation air is heated or cooled
At the waste of energy.High temperature desiccation carries out water evaporation mainly by heat is absorbed, and operation temperature is generally at 100 DEG C or so, behaviour
Make pressure be normal pressure or tiny structure, using indirectly drying equipment, utilizable heat source have very much, as waste heat steam, conduction oil,
Hot fume, natural gas etc..Sludge high temperature heat drying: temperature is high, can sterilize to sludge；Origin of heat is wide, suitable and work
Industry garden, steam power plant, biogas plant etc. match.But there is also some disadvantages for existing sludge high temperature heat drying technique: place
Reason ability is small, and energy consumption is high, and waste heat recycling is insufficient, and security of system is relatively low etc..Therefore, it is necessary to develop a kind of processing capacity it is big,
The sludge drying process that low energy consumption, highly-safe.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose sludge drying system.The sludge drying system processing capacity is big, outlet moisture percentage in sewage sludge is easy to adjust,
It consumes energy low, no added, pollution-free, can be realized sludge reduction, innoxious, recycling treatment disposition, outlet sludge can expire
The requirement that sufficient recycling sludge utilizes.
In one aspect of the invention, the invention proposes a kind of sludge drying systems.According to an embodiment of the invention, should
Sludge drying system includes: sludge storage bin；Mixing device, the mixing device have the first sludge inlet, the second sludge inlet
It is exported with sludge mixing, first sludge inlet is connected with the sludge storage bin；Sludge drying machine, in the sludge drying machine
Equipped with molding machine, the sludge drying machine has sludge mixing entrance, desiccation molding sludge outlet, inert gas entrance and lazy
Property gas vent, the outlet of the sludge mixing entrance and the sludge mixing is connected；And sorting unit, the sorting unit tool
There are desiccation molding sludge inlet, the first drier outlet and the second drier outlet, the desiccation molding sludge inlet and desiccation form
Sludge outlet is connected, and second drier outlet is connected with second sludge inlet.
Sludge drying system according to an embodiment of the present invention first supplies the pending mud in sludge storage bin to mixing
It being mixed in device with sludge siccative, gained sludge mixing enters sludge drying machine, desiccation dehydration is carried out in atmosphere of inert gases,
And grain shape is formed under the action of molding machine, obtain desiccation molding sludge.Further, desiccation molding sludge, which enters, divides
Screening device is sorted by certain specification, and a part of partial sludge siccative returns to mixing device and mixes with pending mud, another
Portion's sludge siccative can be used as outlet siccative and carry out resource utilization.Sludge drying system single line proposed by the present invention, single set as a result,
Processing capacity is greater than 120t/d, can handle aqueous about 80% sludge, the moisture content for exporting sludge can be according to sludge terminal
Purposes is adjusted, and sludge drying system uses atmosphere of inert gases, highly-safe, and hidden peril of explosion is not present.In addition, this hair
In the product that bright sludge drying system is handled other than containing a small amount of flocculant, other medicaments are not added, export siccative
Land use may be implemented, also can be used for burning, carbonize, purposes, the sludge drying system of the invention such as brickmaking completely can be real
Existing the innoxious of sludge, minimizing, recycling treatment requirement.
In addition, sludge drying system according to the above embodiment of the present invention can also have the following additional technical features:
In some embodiments of the invention, the sludge drying system further comprises: sludge pump, the sludge pump with
The sludge storage bin is connected.
In some embodiments of the invention, conveyer is equipped between the sludge storage bin and first sludge inlet.
In some embodiments of the invention, the outside of the sludge drying machine is equipped with insulating layer.
In some embodiments of the invention, the sludge drying system further comprises: pre- heat transfer apparatus, described pre-
Heat transfer apparatus is located between desiccation molding sludge outlet and desiccation molding sludge inlet, and with the inert gas
Entrance is connected.
In some embodiments of the invention, it is equipped between the pre- heat transfer apparatus and desiccation molding sludge inlet
Elevator.
In some embodiments of the invention, the sludge drying system further comprises: waste-heat recovery device, described remaining
Heat recovery apparatus has high-temperature medium entrance and cryogenic media outlet, the high-temperature medium entrance and the inert gas outlet phase
Even；Gas-liquid separation device, the gas-liquid separation device have cryogenic media entrance, gas vent and liquid outlet, the low temperature
Medium inlet is connected with the cryogenic media outlet, and the gas vent is connected with the pre- heat transfer apparatus.
In some embodiments of the invention, gas is equipped between the high-temperature medium entrance and the inert gas outlet
Detector.
In some embodiments of the invention, circulated air is equipped between the gas vent and the pre- heat transfer apparatus
Machine.
In some embodiments of the invention, the sludge drying system further comprises: siccative feed bin, the siccative material
Storehouse is connected with first drier outlet, and conveyer is equipped between the siccative feed bin and first drier outlet.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of sludge drying system according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the sludge drying system of further embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instruction such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, the terms such as " installation ", " connected ", " connection ", " fixation "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
The interaction relationship of connection or two elements, unless otherwise restricted clearly.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of sludge drying systems.According to an embodiment of the invention, ginseng
Fig. 1 is examined, which includes: sludge storage bin 10, mixing device 20, sludge drying machine 30 and sorting unit 40.Wherein,
Mixing device 20 has the first sludge inlet 21, the second sludge inlet 22 and a sludge mixing outlet 23, the first sludge inlet 21 with
Sludge storage bin 10 is connected；Molding machine 31 is equipped in sludge drying machine 30, sludge drying machine 30 has sludge mixing entrance 32, does
Chemical conversion type sludge outlet 33, inert gas entrance 34 and inert gas outlet 35, sludge mixing entrance 32 and sludge mixing export
23 are connected；Sorting unit 40 has a desiccation molding sludge inlet 41, the first drier outlet 42 and the second drier outlet 43, desiccation at
Type sludge inlet 41 is connected with desiccation molding sludge outlet 33, and the second drier outlet 43 is connected with the second sludge inlet 22.
Sludge drying system according to an embodiment of the present invention first supplies the pending mud in sludge storage bin to mixing
It is mixed in device with sludge siccative, gained sludge mixing enters sludge drying machine, at inert gas (such as nitrogen and/or argon gas)
Desiccation dehydration is carried out in atmosphere, and forms grain shape under the action of molding machine, obtains desiccation molding sludge.Further
Ground, desiccation molding sludge enter sorting unit and are sorted by certain specification, and a part of partial sludge siccative returns to mixing device
It is mixed with pending mud, another sludge siccative can be used as outlet siccative and carry out resource utilization.It is proposed by the present invention as a result,
Sludge drying system single line, single set processing capacity are greater than 120t/d, can handle aqueous about 80% sludge, export containing for sludge
Water rate can be adjusted according to sludge terminal use, and sludge drying system uses atmosphere of inert gases, highly-safe, not deposited
In hidden peril of explosion.In addition, not adding other than containing a small amount of flocculant in the product that sludge drying system of the invention is handled
Adding other medicaments, land use may be implemented in outlet siccative, and it also can be used for burning, carbonize, the purposes such as brickmaking, sludge of the invention
The innoxious of sludge, minimizing, recycling treatment requirement may be implemented in anhydration system completely.
Further sludge drying system according to an embodiment of the present invention is described in detail below with reference to Fig. 1~2.
According to an embodiment of the invention, mixing device 20 has the first sludge inlet 21, the second sludge inlet 22 and sludge
Mixing outlet 23, the first sludge inlet 21 is connected with sludge storage bin 10.Mixing device 20 is suitable for will be from sludge storage bin 10
Pending mud is mixed with the sludge siccative from sorting unit 40, obtains sludge mixing.Inventors have found that pass through by
The pending mud of moisture content about 80% is mixed with the desiccation molding sludge that sorting unit exports, and can be significantly improved wait locate
Sludge subsequent desiccation molding effect is managed, to significantly improve the treatment effeciency and desiccation molding sludge of subsequent sludge drying machine
Quality.In addition, it is necessary to explanation, pending mud and the mixed proportion of sludge siccative are not particularly restricted, it can basis
Moisture content needed for outlet sludge terminal use is adjusted.
According to an embodiment of the invention, being equipped with molding machine 31 in sludge drying machine 30, sludge drying machine 30 has sludge
Mixing entrance 32, desiccation molding sludge outlet 33, inert gas entrance 34 and inert gas outlet 35, sludge mixing entrance 32 with
Sludge mixing outlet 23 is connected.Sludge drying machine 30 is suitable for carrying out desiccation and molding to sludge mixing in atmosphere of inert gases,
Obtain the desiccation molding sludge of grain shape.Specifically, sludge drying machine can be using outside heat (such as the A institute in Fig. 1 and 2
Show) dehydration and drying is carried out to sludge mixing, the specific type of external heat source is not particularly restricted, such as can be steamed for high temperature
Vapour, high temperature heat conductive oil, high-temperature flue gas etc..Meanwhile the molding machine in sludge drying machine can carry out at molding sludge mixing
Reason.Sludge drying machine collaboration molding machine can use outside heat and realize to sludge progress dehydration and drying, transport, mix as a result,
Close the functions such as stirring, molding.
According to an embodiment of the invention, there is sorting unit 40 desiccation to form sludge inlet 41,42 and of the first drier outlet
Second drier outlet 43, desiccation molding sludge inlet 41 and desiccation form sludge outlet 33 and are connected, the second drier outlet 43 and the
Two sludge inlets 22 are connected.Sorting unit is suitable for sorting desiccation molding sludge according to certain specification, to obtain first
Siccative and the second siccative, wherein the first siccative can be used as outlet siccative and carry out resource utilization, and the second siccative returns to mixing device
It is mixed with pending mud.Specifically, sorting unit can sort desiccation molding sludge according to granularity, grain is obtained
First siccative of the diameter more than or equal to 6mm and the second siccative less than 6mm.
According to an embodiment of the invention, above-mentioned sludge drying system may further comprise: sludge pump 50 with reference to Fig. 2.Sludge
Pump 50 is connected with sludge storage bin 10.It is kept in thus, it is possible to be supplied pending mud into sludge storage bin 10 using sludge pump 50,
To further increase the continuity of production.
According to an embodiment of the invention, being equipped with conveyer 60 between sludge storage bin 10 and the first sludge inlet 21.In addition, root
According to the embodiment of the present invention, conveyer 60 also is provided between the second drier outlet 43 and the second sludge inlet 22.Thus, it is possible to sharp
The pending mud in sludge storage bin 10 is supplied to mixing device 20, the part for sub-electing sorting unit 40 with conveyer 60
Sludge siccative is back to mixing device 20.
According to an embodiment of the invention, the outside of sludge drying machine 30 is equipped with insulating layer 36.Thus, it is possible to effectively reduce dirt
Thermal loss in mud desiccation machine 30 further increases the utilization rate of heat in sludge drying machine 30.
According to an embodiment of the invention, above-mentioned sludge drying system may further comprise: pre- heat transfer apparatus with reference to Fig. 2
70.Pre- heat transfer apparatus 70 is located between desiccation molding sludge outlet 33 and desiccation molding sludge inlet 41, and and inert gas
Entrance 34 is connected.Pre- heat transfer apparatus 70 can be while conveying desiccation molding sludge, using entrained by desiccation molding sludge
Heat inert gas that subsequent gas-liquid separation device is sent preheat, and then the inert gas by preheating enters sludge
Desiccation machine 30, thus, it is possible to further increase the thermal efficiency of system entirety.
According to an embodiment of the invention, pre- heat transfer apparatus 70 is connected towards desiccation molding 33 direction of sludge outlet inclination, with
Convenient for desiccation molding sludge discharge.
According to an embodiment of the invention, being equipped between pre- heat transfer apparatus 70 and desiccation molding sludge inlet 41 with reference to Fig. 2
Elevator 80.
According to an embodiment of the invention, above-mentioned sludge drying system may further comprise: waste-heat recovery device with reference to Fig. 2
90 and gas-liquid separation device 100.Waste-heat recovery device 90 has high-temperature medium entrance 91 and cryogenic media outlet 92, high-temperature medium
Entrance 91 is connected with inert gas outlet 35；Gas-liquid separation device 100 has cryogenic media entrance 101, gas vent 102 and liquid
Body outlet 103, cryogenic media entrance 101 is connected with cryogenic media outlet 92, gas vent 102 and pre- 70 phase of heat transfer apparatus
Even.The high temperature inert gas that sludge drying machine 30 is discharged enters waste-heat recovery device 90 and carries out waste heat recovery processing, the heat of acquisition
Amount can be applied to other production units (as shown in B in Fig. 2).Through waste heat inert gas after the recovery from 92 row of cryogenic media outlet
Out, it travels further into gas-liquid separation device 100 and carries out gas-liquid separation processing, isolated gas returns to pre- heat transfer apparatus
70, by desiccation molding sludge preheating, isolated liquid (main component is water, as shown in C in Fig. 2) can be applied to other lifes
Production system.Sludge drying system of the invention is by being arranged pre- heat transfer apparatus 70, waste-heat recovery device 90 and gas-liquid point as a result,
From device 100, further system waste heat can be made sufficiently to be recycled, effectively reduce the energy consumption of sludge drying, and recycled
To waste heat can be used for other production units.
According to an embodiment of the invention, being equipped with gas between high-temperature medium entrance 91 and inert gas outlet 35 with reference to Fig. 2
Detector 110.Detector 110 is suitable for monitoring the noble gas component that sludge drying machine 30 is discharged, and in time to indifferent gas
The variation of body ingredient is made accordingly, to ensure in sludge drying machine 30 for atmosphere of inert gases.
According to an embodiment of the invention, being equipped with circulated air between gas vent 102 and pre- heat transfer apparatus 70 with reference to Fig. 2
Machine 120.Circulating fan 120 is suitable for supplying the gas that gas-liquid separation device 100 is discharged to pre- heat transfer apparatus 70.
According to an embodiment of the invention, above-mentioned sludge drying system may further comprise: siccative feed bin 130 with reference to Fig. 2.
Siccative feed bin 130 is connected with the first drier outlet 42, and conveyer is equipped between siccative feed bin 130 and the first drier outlet 42
60.Siccative feed bin 130, which is suitable for sorting obtained partial sludge siccative to sorting unit 40, to be stored.
It is dry to the sludge implemented using sludge drying system according to an embodiment of the invention below in order to facilitate understanding
Change method is described.
Sludge pump is used to about 80% sludge of moisture content that the external world comes being delivered to sludge storage bin, and then sludge enters mixing dress
The siccative sent with sorting unit is set to be mixed；Mixed material enters thermal dehydration in sludge drying machine, reaches requirement
Moisture content, and form grain shape；The dry material of sludge drying machine outlet is preheated conveying device and send to lifting device；It is preheating
In conveying device, the material of high temperature can also heat the inert gas into sludge drying machine, further decrease energy consumption；Promote dress
It sets and dry material is sent into sorting unit, material is separated by certain specification；The discharging conveyer material that meets the requirements of conveying into
Enter siccative feed bin, the material that circulation feeder conveying is unsatisfactory for requiring enters mixing device and the sludge of sludge storage bin output carries out
Mixing；In order to monitor the inert conditions inside desiccation machine, gas detection has been installed additional on the jet chimney of sludge drying machine outlet
Device, then steam enters the heat in waste-heat recovery device in recovered steam, this partial heat is used for other and uses hot cell；It returns
Inert gas after receiving heat is re-fed into sludge drying machine by circulating fan, is followed after gas-liquid separation device is handled
Ring uses；Condensate liquid and separation water, are admitted to the use of other production systems.
Sludge drying system according to an embodiment of the present invention can have selected from least one of following advantage:
(1) single line, single set processing capacity are big, and processing capacity is greater than 120t/d；
(2) sludge that can handle aqueous 80% or so, export sludge moisture content can according to sludge terminal use into
Row adjustment；
(3) waste heat recycling sufficiently, can be used for other production units, effectively reduce the energy consumption of sludge drying；
(4) inert atmosphere is used, it is highly-safe, hidden peril of explosion is not present；
(5) in the sludge product of desiccation in addition to containing other than a small amount of flocculant, not adding any medicament, outlet siccative can be with
It realizes land use, can also be burned, be carbonized, brickmaking etc., the innoxious of sludge, minimizing, recycling may be implemented completely
It is required that.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of sludge drying system characterized by comprising
Sludge storage bin；
There is the first sludge inlet, the second sludge inlet and sludge mixing to export for mixing device, the mixing device, and described first
Sludge inlet is connected with the sludge storage bin；
Sludge drying machine, the sludge drying machine is interior to be equipped with molding machine, and the sludge drying machine has sludge mixing entrance, does
Chemical conversion type sludge outlet, inert gas entrance and inert gas outlet, the sludge mixing entrance and the sludge mixing export
It is connected；
Sorting unit, the sorting unit has desiccation molding sludge inlet, the first drier outlet and the second drier outlet, described
Desiccation forms sludge inlet and is connected with desiccation molding sludge outlet, second drier outlet and the second sludge inlet phase
Even.
2. sludge drying system according to claim 1, which is characterized in that further comprise:
Sludge pump, the sludge pump are connected with the sludge storage bin.
3. sludge drying system according to claim 1, which is characterized in that the sludge storage bin enters with first sludge
Conveyer is equipped between mouthful.
4. sludge drying system according to claim 1, which is characterized in that the outside of the sludge drying machine is equipped with heat preservation
Layer.
5. sludge drying system according to claim 1, which is characterized in that further comprise:
Pre- heat transfer apparatus, the pre- heat transfer apparatus are located at the desiccation molding sludge outlet and enter with desiccation molding sludge
Between mouthful, and it is connected with the inert gas entrance.
6. sludge drying system according to claim 5, which is characterized in that the pre- heat transfer apparatus and the desiccation at
Elevator is equipped between type sludge inlet.
7. sludge drying system according to claim 5, which is characterized in that further comprise:
Waste-heat recovery device, the waste-heat recovery device have high-temperature medium entrance and cryogenic media outlet, the high-temperature medium
Entrance is connected with the inert gas outlet；
Gas-liquid separation device, the gas-liquid separation device have cryogenic media entrance, gas vent and liquid outlet, the low temperature
Medium inlet is connected with the cryogenic media outlet, and the gas vent is connected with the pre- heat transfer apparatus.
8. sludge drying system according to claim 7, which is characterized in that the high-temperature medium entrance and the indifferent gas
Body is equipped with detector between outlet.
9. sludge drying system according to claim 7, which is characterized in that the gas vent and the pre- heated conveying fill
Circulating fan is equipped between setting.
10. described in any item sludge drying systems according to claim 1~9, which is characterized in that further comprise:
Siccative feed bin, the siccative feed bin are connected with first drier outlet, and the siccative feed bin and first siccative
Conveyer is equipped between outlet.
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|---|---|---|---|
| CN201910783089.6A CN110451767A (en) | 2019-08-23 | 2019-08-23 | Sludge drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910783089.6A CN110451767A (en) | 2019-08-23 | 2019-08-23 | Sludge drying system |
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| CN110451767A true CN110451767A (en) | 2019-11-15 |
Family
ID=68488763
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|---|---|---|---|
| CN201910783089.6A Pending CN110451767A (en) | 2019-08-23 | 2019-08-23 | Sludge drying system |
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