CN206089407U - MVR drying system - Google Patents
MVR drying system Download PDFInfo
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- CN206089407U CN206089407U CN201621097437.2U CN201621097437U CN206089407U CN 206089407 U CN206089407 U CN 206089407U CN 201621097437 U CN201621097437 U CN 201621097437U CN 206089407 U CN206089407 U CN 206089407U
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- 238000001035 drying Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 238000010025 steaming Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 239000010802 sludge Substances 0.000 abstract description 7
- 238000010186 staining Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 17
- 238000007906 compression Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000004064 dysfunction Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a MVR drying system in the sludge treatment industrial equipment field of making, including a rectangle shell, hydrofuge mouth, feed valve and bleeder valve are equipped with well pony axle along the axis in that the shell is inside, on the well pony axle circumference, set up with the cavity heliciform paddle of well pony axle intercommunication, the both ends of well pony axle are heat source entry and heat source export respectively, and are outside at the rectangle shell, are equipped with heat exchanger and hot -water cylinder, set up heater and aeration board in hot -water cylinder inside, the last steam inlet of heat exchanger, through vapor compressor connection hydrofuge mouth, heat source entry is connected to the steam ports of going up of heat exchanger, the export of hot -water cylinder sub -unit connection heat source, the play water end (W. E. ) of hot -water cylinder passes through the lower water inlet of hot water pump connected heat exchanger, and the aeration board of hot -water cylinder bottom is connected to the lower delivery port of heat exchanger, and the top and the middle part of heat exchanger set up blow -down valve and trap respectively, and the energy of inputing just promotes material temperature, energy -conserving and non -staining environment.
Description
Technical field
The present invention relates to Treatment of Sludge industrial equipment manufacture field, specifically refers to be dried aqueous higher material
A kind of MVR drying systems.
Background technology
MVR is steam mechanical recompression（mechanical vapor recompression ）Abbreviation.It is
The energy of the indirect steam that its own is produced is re-used, so as to reduce a power-saving technology of the demand of the energy to external world.It is early
In the sixties, Germany and France are successfully by the technology for chemical industry, food, papermaking, medicine, desalinization and sewage disposal
Deng field.Its course of work is that, by the compression of low-grade steam Jing compressors, temperature, pressure are improved, and heat content increases, subsequently into
Heat exchanger is condensed, to make full use of the latent heat of steam.
At present achieved with being widely applied in terms of evaporation and concentration, evaporative crystallization, but MVR technologies are used to do MVR technologies
Dry aspect is also without successful story.
The dehydrator that several moneys are dried using MVR technologies to material, the such as patent No. 2016 were developed before the applicant
20053334X's《A kind of thermal balance disk dehydrator》, the patent No. 2016200533335《A kind of thermal balance blade dehydrator》With
The patent No. 2016200533373《A kind of thermal balance type dehydrator》.
With the patent No. 2016200533335《A kind of thermal balance blade dehydrator》As a example by, the invention is included outside a rectangle
Shell, moisture exhausting port, inlet valve and outlet valve, inside the housing along axis, are provided with hollow axle, on hollow axle circumference, arrange
The hollow screw shape blade connected with hollow axle, the two ends of hollow axle, respectively thermal source inlet and thermal source outlet, in dehumidifying
At mouthful, connect vapour compression machine air intake, at vapour compression machine venthole, connect thermal source inlet；At thermal source outlet, connect cold
Condensate pump, between vapour compression machine venthole and thermal source inlet, is provided with assisted heating device；In thermal source outlet and condensate pump
Between, it is provided with fixed gas vacuum pump；The temperature of charge of input is simply improved tens by the energy being input in drying course
Degree, discharges without water vapour.Traditional dehydrator, more than the 80% of energy consumption consumes and becomes on steam in water, and the invention is exactly this
More than 80% energy consumption saves, and reaches energy-conservation purpose.Drying course is carried out in the casing for fully sealing, and is prevented
The discharge of dust, it is free from environmental pollution.
But the invention is mainly shown as in actual use it has also been found that there is weak point：After work a period of time, pressure
Contracting machine just takes out motionless steam, produces overheated and stops.This is because drying equipment is by indirect steam by the form of conduction of heat
Enthalpy heat transfer is to the solid material for being dried, and the heat transfer rate between solid material and drying equipment can not show a candle to liquid and set with evaporation
Heat transfer rate between standby, therefore substantial amounts of indirect steam consumed in time, is risen very to the outlet pressure of compressor is made
To blocking, compressor is caused to stop, system cannot continuous firing.
The content of the invention
In order to solve the problems, such as above-mentioned prior art, the present invention provides a kind of simple efficient MVR drying systems.
The technical scheme that the present invention is used is as follows：
A kind of MVR drying systems, including a rectangle shell, are provided with moisture exhausting port, inlet valve and outlet valve on shell,
Enclosure is provided with hollow axle along axis, on hollow axle circumference, arranges the hollow screw shape oar connected with hollow axle
Leaf, the two ends of hollow axle, respectively thermal source inlet and thermal source outlet, in the outside of the rectangle shell, are provided with heat exchanger
And hot-water cylinder, heater and aeration board are set inside hot-water cylinder；The upper air intake of the heat exchanger, is connected by vapour compression machine
Connect moisture exhausting port, the upper venthole connection thermal source inlet of heat exchanger；The hot-water cylinder bottom connects thermal source outlet, the water outlet of hot-water cylinder
The lower water inlet for connecting heat exchanger by heat-exchanger pump, the lower outlet of heat exchanger is held to connect the aeration board of hot water pot bottom, heat exchange
The top and middle part of device is respectively provided with drain valve and drain valve.
The low temperature and low pressure steam of drying machine of the present invention institute's output in dry run Jing compressor compression after, temperature and pressure
Raise, then Jing heat exchangers exchange heat, most heat is switched in hot water, and output high-temperature-hot-water and a small amount of steam send drying machine back to
It is used for again being dried evaporation, little part heat is sent to hot-water cylinder bottom with the form of condensed water and uncooled steam and on-condensible gas
The aeration board in portion, Jing aeration boards dispersion is washed the gas that heat exchanger flows out, remaining steam enthalpy heat and on-condensible gas institute
The heat of carrying is further recycled, and when fixed gas is enough, air pressure rises, and venting valve is automatically opened up, by on-condensible gas
Discharge, reach the purpose for separating on-condensible gas.With the increase of the condensation water quantity of evaporation output, liquid level rises in hot-water cylinder, dredges
Water valve is automatically opened up, and discharges unnecessary water, maintains system balancing.Enter from the high-temperature-hot-water and a small amount of steam of heat exchanger output
After drying machine, heat is absorbed by drying machine, be converted into low-temperature water heating and send back to hot-water cylinder from the water return outlet of drying machine recycling.
Drying machine is absorbed after heat, is passed to by baking material, makes the evaporation moisture content dried in material, output low-pressure steam.Such circulation industrial
Make, it is outer at the beginning of start, it is not required to consume the purpose of the i.e. achievable drying materials of external heat source, so as to reach the purpose of energy-conservation.
Hot-water cylinder set by the present invention is crucial, and it completes following functions：
1st, it is collecting and segregation apparatuss for hot-fluid, current and air-flow.The steam for being dried output is finally with liquid in this tank
Form from system separate, fixed gas be also here it is scrubbed reclaim heat after empty, while the section of this tank or recuperated cycle
Point；
2nd, it is the key device of regulation and constant compression machine inlet outlet pressure differential, there is its regulatory function, no matter material
How it is dried to journey, compressor normal work can be kept.If heat-insulating property is bad, middle heat loss is excessive, system without
Method self sustaining, is also to realize automatic heat patching by it.
The invention has the beneficial effects as follows：
（1）The present invention is recycled the heat that the water vapour that traditional dehydrator is discharged contains, and the energy being input into is only
It is that temperature of charge is improved into tens degree, solves traditional dehydrator, more than the 80% of energy consumption consumes and become asking on steam in water
Topic, reaches energy-conservation purpose；
（2）Increase the hot-water cylinder for arranging, enable the heat that the water vapour that dehydrator is discharged contains to carry out recycling smoothly
Carry out, it is ensured that stable operation of the present invention, normal work.In addition at the beginning of start, it is not required to consume the i.e. achievable material baking of external heat source
It is dry, reach the purpose of energy-conservation；
（3）Drying course of the present invention is carried out in the cylinder for fully sealing, and has prevented the discharge of dust, is also greatly subtracted
Issuable foul smell is lacked in material drying to working environment and the impact of social environment.
Description of the drawings
Fig. 1 is a kind of MVR drying systems schematic diagram.
Fig. 2 is a kind of 2016200533335 thermal balance blade dehydrator schematic diagrams.
In figure, 1- heat exchangers, 2- vapour compression machines, 3- drain valves, 4- drying machines, 5- drain valves, 6- heaters,
7- aeration boards, 8- hot-water cylinders, 9- heat-exchanger pumps, 11-locking airway dysfunction inlet valve, 12-moisture exhausting port, 13-shell, 14-oar
Leaf, 15-locking airway dysfunction outlet valve, 16-thermal source inlet, 17-thermal source outlet, 19-assisted heating device, 110-do not coagulate
Gas vacuum pump, 111-condensate pump, 118-vapour compression machine.
Specific embodiment
Fig. 2 is a kind of 2016200533335 thermal balance blade dehydrator schematic diagrams, an including rectangle shell, moisture exhausting port,
Inlet valve and outlet valve, inside the housing along axis, are provided with hollow axle, on hollow axle circumference, arrange and hollow axle
The hollow screw shape blade of connection, the two ends of hollow axle, respectively thermal source inlet and thermal source outlet, at moisture exhausting port, connection
Vapour compression machine air intake, at vapour compression machine venthole, connects thermal source inlet；At thermal source outlet, connect condensate pump.
Between vapour compression machine venthole and thermal source inlet, assisted heating device is provided with；Between thermal source outlet and condensate pump, it is provided with
Fixed gas vacuum pump.
Fig. 1 is a kind of MVR drying systems schematic diagram, is improving and optimizating of carrying out on the basis of Fig. 2, and increase is provided with changes
Hot device and hot-water cylinder, arrange heater and aeration board inside hot-water cylinder；The upper air intake of the heat exchanger, by both vapor compression
Machine connects moisture exhausting port, the upper venthole connection thermal source inlet of heat exchanger；The hot-water cylinder bottom connects thermal source outlet, hot-water cylinder
Water side connects the lower water inlet of heat exchanger by heat-exchanger pump, and the lower outlet of heat exchanger connects the aeration board of hot water pot bottom,
The top and middle part of heat exchanger is respectively provided with drain valve and drain valve.
Working process and principle of the invention：
1st, at the beginning of starting, first appropriate tap water is injected in hot-water cylinder 8, restarts water pump 9, lead to the water in hot-water cylinder
Heat exchanger 1 is crossed in drying machine 4, then hot-water cylinder is sent back to from the return pipe of drying machine.After hot water pump work, should be to hot-water cylinder
Interior moisturizing, until drain valve to there are flowing out just stop adding water；
2nd, start heater 6 and drying machine, circulate the waterside in hot-water cylinder, while intensification of being heated, while making drying
Material in machine is heated intensification；
3rd, when the temperature rise in drying machine reaches the evaporating temperature of setting, vapour compression machine is started, in vapour compression machine
Under suction, certain negative pressure is produced in drying machine, makes moisture evaporation, produce steam, steam Jing after compressor compression, temperature and pressure
Power is raised, and when flowing through heat exchanger, most heat is switched in hot water, and output high-temperature-hot-water and a small amount of steam send drying machine back to
Recycle, little part heat is sent to the aeration of hot water pot bottom with the form of condensed water and uncooled steam and on-condensible gas
Plate 7, Jing aeration boards dispersion is washed the gas that heat exchanger flows out, and remaining steam enthalpy heat and the heat of on-condensible gas is entered
One step is recycled.When fixed gas is enough, air pressure rises, and automatically opens up venting valve 3, and on-condensible gas is discharged.With steaming
The increase of the condensation water quantity of output is sent out, liquid level rises in hot-water cylinder, drain valve is automatically opened up, discharge unnecessary water, maintain system
Balance；
4th, when the temperature rise in hot-water cylinder is too high, the heat in heat exchanger is transformed in hot water will tail off, and substantial amounts of two
Secondary steam is not condensed and is sent back to hot-water cylinder, and now the steam in hot-water cylinder increases, and temperature is raised, and air pressure is increased, and system is certainly
The dynamic work for stopping heater 6, proceeds to self sustaining.During self sustaining, the middle warm water Jing heat exchangers in hot-water cylinder are changed
Output high-temperature-hot-water after heat, high-temperature-hot-water is sent in drying machine, is absorbed after heat by drying machine, becomes low-temperature water heating and sends back to heat
Water pot, low-temperature water heating washs the residue vapor of heat exchanger output in hot-water cylinder and obtains temperature rise, warm water in output.Drying machine is inhaled
After receiving heat, moisture output low-pressure steam is evaporated, Jing after compressor compression, output high temperature and high pressure steam, high temperature steams low-pressure steam
Jing after heat exchange, most heat is given to middle warm water's output high-temperature-hot-water to vapour, and few part heat returns to hot-water cylinder Jing low-temperature water heatings
Absorb warm water in output.So circulation, autonomous working.Control oneself, i.e. itself automatic maintenance；
5th, control oneself in running, such as dehydrator heat dissipation is very few, then the steam of output also can be reduced, compressor inlet pressure
Reduce, the load increase of compressor, system reduces the rotating speed of compressor automatically, and adjusts pressure maintaining valve 3, reduces the outlet of compressor
Pressure, maintains metastable gateway pressure reduction, keeps the normal work of compressor, will not produce the phenomenon of parking, and system is still
Can steady operation.But the temperature rise now in hot-water cylinder is very high, pressure maintaining valve can also continue aerofluxuss, and system can report to the police, and notify operative employee
Process；
The hot water that the energy loss of running system of the 6th, controlling oneself mainly is discharged by drain valve takes away part heat, a small amount of
Fixed gas takes away part heat, and the material being oven-dried takes away part heat, and these heat loss are mainly by compressor and dehydrator institute
The electric energy of input is supplemented.With traditional drying equipment ratio, the present invention is recycled profit in the indirect steam of dry run institute output
With, substantial amounts of energy is saved, and greatly reduce the stink of drying course output；
7th, during self sustaining, such as system heat insulating ability is poor, and heat loss is excessive, and the temperature in hot-water cylinder can decline,
System automatic heater, additional heat maintains system heat balance；
8th, drying machine of the present invention can be blade dryer, band drier, tray drier and other appoint
A kind of what drying equipment with steam, conduction oil, hot water or hot blast as thermal source；
9th, heater of the present invention can be the heat exchanger such as electrothermal tube, or conduction oil, hot blast, steam.
The back yard industry device for processing 6 tons of municipal sludge for a set of day of our developments is the following is, is configured as follows：
Sludge original moisture content 83%, after drying, moisture content drops to 28%.Per hour power consumption 32KW.H, processes municipal sludge
0.25 ton, comprehensive power consumption about 128KW.H/ ton sludge.This technology is as follows with blade drying contrast：
Ton drying sludge operating cost compares
MVR dry technologies of the present invention, only pass 56% or so of same drying cost, due to the thermal source temperature of drying of the present invention
Degree is high without commodity steam, and the heat exchange area of drying machine will be increased, therefore cost of investment will increase, but increasing degree is less, and
Investment increases simply disposable, and the saving of operation cost is that all occur daily, therefore the popularization and application of the present invention have
Preferable economic benefit.
Claims (1)
1. a kind of MVR drying systems, an including rectangle shell, are provided with moisture exhausting port, inlet valve and outlet valve, outside on shell
Along axis inside shell, hollow axle is provided with, on hollow axle circumference, the hollow screw shape oar connected with hollow axle is set
Leaf, the respectively two ends of hollow axle, thermal source inlet and thermal source outlet, it is characterised in that：In the outside of the rectangle shell,
Heat exchanger and hot-water cylinder are provided with, heater and aeration board are set inside hot-water cylinder；The upper air intake of the heat exchanger, by steaming
Vapour compressor connects moisture exhausting port, the upper venthole connection thermal source inlet of heat exchanger；The hot-water cylinder bottom connects thermal source outlet, heat
The water side of water pot connects the lower water inlet of heat exchanger by heat-exchanger pump, and the lower outlet of heat exchanger connects the exposure of hot water pot bottom
Gas plate, the top and middle part of heat exchanger are respectively provided with drain valve and drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621097437.2U CN206089407U (en) | 2016-10-03 | 2016-10-03 | MVR drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621097437.2U CN206089407U (en) | 2016-10-03 | 2016-10-03 | MVR drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206089407U true CN206089407U (en) | 2017-04-12 |
Family
ID=58481999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621097437.2U Active CN206089407U (en) | 2016-10-03 | 2016-10-03 | MVR drying system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206089407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365407A (en) * | 2016-10-03 | 2017-02-01 | 辛后安 | MVR (mechanical vapor recompression) drying system |
| CN107352772A (en) * | 2017-08-09 | 2017-11-17 | 南京中电环保工程有限公司 | Sludge preheating device and sludge drying system |
-
2016
- 2016-10-03 CN CN201621097437.2U patent/CN206089407U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365407A (en) * | 2016-10-03 | 2017-02-01 | 辛后安 | MVR (mechanical vapor recompression) drying system |
| CN107352772A (en) * | 2017-08-09 | 2017-11-17 | 南京中电环保工程有限公司 | Sludge preheating device and sludge drying system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180404 Address after: Block south of Xiaoshan economic and Technological Development Zone Xiaoshan Hongxing Road District of Hangzhou City, Zhejiang province 311215 No. 117 Patentee after: Hangzhou an Yong environmental protection & Technology Co., Ltd. Address before: 526020, Guangdong 40, Duanzhou Province, Zhaoqing Road Star Cui Bridge Company Patentee before: Xin Houan |