CN206262122U - Integrated MVR evaporation dryings system - Google Patents
Integrated MVR evaporation dryings system Download PDFInfo
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- CN206262122U CN206262122U CN201621370605.0U CN201621370605U CN206262122U CN 206262122 U CN206262122 U CN 206262122U CN 201621370605 U CN201621370605 U CN 201621370605U CN 206262122 U CN206262122 U CN 206262122U
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- evaporator tank
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Abstract
The utility model is related to the integrated MVR evaporation dryings system that energy-saving environmental protection device is manufactured, and a seal case, top sets feed pipe, bottom sets solids outlet port, and end sets steam (vapor) outlet, and box house sets evaporator tank, evaporator tank sets annular scraper guipure along evaporator tank length direction；Outside casing, interconnected steam heater and hot water basin is provided with, by circulating pump, connection is located at the heat source passages of evaporator tank discharge end, the heat source passages of evaporator tank feed end, connection steam heater bottom for hot water basin bottom；Steam heater bottom also by vapour compression machine, connects the steam (vapor) outlet of casing；Hot water basin top, connects fixed gas drain valve；Steam heater adjacent bottom portions, set pipeline connection condensed water elimination valve and steam valve；Fixed gas and condensate return system are also add, the upper plate of heat source passages is united two into one with the base plate of evaporator tank, heating surface non flouling behaviour will not also be blocked, multi-layer evaporation groove is set, improve evaporation efficiency.
Description
Technical field
The present invention relates to energy-saving environmental protection device manufacture field, in specifically referring to just high-salt wastewater and industrial processes
Mother liquor, is concentrated, is crystallized, and the integrated MVR evaporation dryings system that solid to crystallizing out is dried.
Background technology
MVR is steam mechanical recompression（mechanical vapor recompression ）Abbreviation.It is weight
The energy of the new indirect steam produced using its own, so as to reduce a power-saving technology of the demand of the energy to external world.Early in
The technology is successfully used for chemical industry, food, papermaking, medicine, desalinization and sewage disposal etc. by the sixties, Germany and France
Field.Its course of work is that low-grade steam is compressed through compressor, and temperature, pressure are improved, and heat content increases, subsequently into changing
Hot device condensation, to make full use of the latent heat of steam.
MVR evaporators on the market, adopt liter film more or falling liquid film rise hair evaporation technology, these evaporator generally existings at present
Maximum problem be easy fouling, easily cause evaporator to block because of crystal.
The applicant once developed excessive money MVR drying machines, and it can effectively solve fouling and blockage problem, be suitable for without stream
The drying of the solid pureed material of dynamic property, but their heat exchange efficiency is not high, such as, and the applicant's patent《A kind of thermal balance
Formula dryer》, patent No. ZL2016 2 0053337.3 is to set heat source passages under steel band, because steel band is logical in thermal source
Slided on road, gap is had between steel band and hot water channel, this gap can largely effect on the conduction of heat.
The content of the invention
In order to solve the problems, such as above-mentioned prior art, the present invention provides simple efficient integration MVR evaporation dryings
System.
The technical scheme that the present invention is used is as follows：
Integrated MVR evaporation dryings system, including a seal case, set feed pipe, at casing bottom in casing top
Portion sets the solids outlet port of locking airway dysfunction, and steam (vapor) outlet is set in casing top or end, it is characterized in that：In box house
At least one, at most 50 is set in the evaporator tank arranged in a zigzag；The evaporator tank is downward-sloping along Flow of Goods and Materials direction
No more than the angle of octave；Along evaporator tank length direction, outside the inside of evaporator tank and evaporator tank below between, ring is set
Shape scraper guipure, evaporation trench bottom sets heat source passages；Outside the casing, interconnected steam heater and heat is provided with
Water basin, the bottom of hot water basin is by circulating pump, heat source passages of the connection at evaporator tank discharge end, evaporator tank feed end
The heat source passages at place, connect the bottom of steam heater；The bottom of steam heater also by vapour compression machine, connects casing
Steam (vapor) outlet；On the top of hot water basin, fixed gas drain valve is connected；In the heat source passages and steam-water mixing of evaporator tank feed end
Between device bottom, draw a pipeline, pipe end connection condensed water elimination valve, the bottom of steam heater and vapour compression machine it
Between, draw a pipeline, pipe end connection steam valve.
As optimization, the other end of the fixed gas drain valve on the connection hot water basin top, highest one in connecting box body
Heat source passages at bar evaporator tank discharge end, the heat source passages at one evaporator tank feed end of highest, the outer steam discharge of connection right case
Pipeline；In the other end of the condensed water elimination valve of the connection steam heater bottom, connection casing from top to bottom steam by Article 2
Heat source passages at hair groove discharge end, the heat source passages at Article 2 evaporator tank feed end then connect the outer blow-off line of left box body；
Heat source passages at the top-down Article 3 evaporator tank feed end of casing, connect the bottom of steam heater.
The annular scraper guipure that the present invention is arranged in evaporator tank, its effect has multiple function concurrently simultaneously, one is scraping off
Deposition, makes evaporator tank not produce fouling；The second is drive the slag charge after crystallization or concentration to be moved to Way out, unlikely generation
Substantial amounts of solids bulk and result in blockage；The third is the material that dispersion is evaporated, makes the material for being evaporated uniform in evaporator tank
Distribution, and flow velocity of the material for being evaporated in evaporator tank can be controlled.Because the mesh of guipure is larger, liquid is not influenceed with heat exchange
The contact in face, so as to obtain evaporation efficiency higher；Evaporate the thermal source used by the heat source passages of trench bottom and come from hot water storage
The hot water and steam of tank.
The steam of material evaporation institute output, through vapour compression machine compression increasing enthalpy after, be not to be sent directly into evaporation trench bottom
Heat source passages entrance, but first in steam heater, heat temperature raising is carried out to the heat source passages low-temperature water heating sent back to of outlet,
Again by circulation pumped back heat source passages entrance.This is, because the material for being evaporated is in charging, to bring part air etc. into unavoidably
On-condensible gas, while the solids outlet port of lower box also has a small amount of air unavoidably enter, along with the material for being evaporated exists
Because the reasons such as temperature rise may chemically react in evaporator tank, on-condensible gas is produced.These not condensing know from experience in heat source passages
Interior formation fixed gas layer, hinders the contact of hot water and steam and evaporation trough floor, so as to greatly reduce heat exchange efficiency.The system
By setting steam-water mixing device, the heat energy of steam is set to be converted into hot water, while fixed gas is discharged from hot water tank top, from
And ensure evaporator tank stabilization and obtain sufficient thermal source.
One steam-out (SO) valve is set, and the valve is arranged on the bottom of steam heater, it is also possible to be arranged on going out for circulating pump
At mouthful, the steam valve, when hot water temperature is less than setting value, is somebody's turn to do by heat source passages outlet hot water's temperature control of evaporation trench bottom
Steam valve is opened, and steam is supplemented from outside to system, and when hot water temperature is more than or equal to setting value, the steam valve is closed, by
The high-quality indirect steam of vapour compression machine institute output maintains system operation.
Fixed gas drain valve is set in hot water tank top, the valve is controlled by air pressure in hot water basin, when in hot water basin
When fixed gas is excessive, system air pressure is raised, and when air pressure is higher than setting value, fixed gas discharge valve opening increase increases capacity,
When air pressure is less than setting value, fixed gas drain valve reduces aperture, reduces capacity.
In the outside in the heat source passages exit of evaporation trench bottom, a condensed water elimination valve is set, the valve is store by hot water
Liquid level in tank, when liquid level is higher than setting value in hot water basin, the increase of condensed water elimination valve opening, increasing water discharge capacity, when
When liquid level is less than setting value, condensed water elimination valve reduces aperture, reduces displacement.Because the high-quality of vapour compression machine output is steamed
Vapour mixes in steam heater with the low-temperature water heating that heat source passages are sent back to, therefore steam is also translated into high-temperature-hot-water, thus is
System total Water can increase, and at this moment, the liquid level of hot water basin can rise, and it is exactly to maintain systematic water level to balance to set this valve.
Further, by the fixed gas that a kind of described MVR evaporation dryings integral system is discharged, can carry a large amount of secretly
Steam, meanwhile, the condensed water for being discharged is also temperature hot water higher, thus can the outer row of this two part gas and water as
Thermal source, is preheated or initial stage evaporation to material.
Further, minimum one layer of evaporator tank is not provided with bottom heat source passages in casing, makes that moisture content is relatively low to be consolidated
Body cannot get heat supplement when the layer is moved, but because whole evaporator tank is in sealing vacuum chamber, thus in it it is residual
Remaining moisture content can still be evaporated and be absorbed heat, and so as to be reached for the purpose of solid material cooling, make the solids material temperature bottom of discharge relatively low.
The beneficial effects of the invention are as follows：
（1）High-salt wastewater or industrial mother liquor, into after system, water and volatile material are evaporated and evaporated by a direct step
Part, and the solids such as salt, slag charge etc. are separated and convection drying, and the non flouling behaviour in evaporative drying process, also will not
Evaporator is blocked because of output crystal or slag charge；
（2）This MVR systems absorb the heat of the steam of compressor output using substantial amounts of recirculated water, rather than directly allowing pressure
Steam after contracting enters evaporator tank, because the water of same volume is more much more than the heat that the steam of same volume is carried, thus, can
Steamer is set to be worked in being in an evaporitic environment for relative constant temperature, evaporation efficiency is higher, while during steam-water mixing, no
Solidifying gas has been discharged, and does not interfere with evaporation efficiency；
（3）Multi-layer evaporation groove is set in casing, is arranged from top to bottom in a zigzag, material and the mutual reverse flow of steam phase are carried
Evaporation efficiency high；
（4）The fixed gas and condensed water that system is discharged, a large amount of steam of entrained with, return-flow system, is repeated again
Utilize, reduce the temperature of system effluent material, energy-conserving and environment-protective；
（5）The present invention unites two into one the upper plate of heat source passages with the base plate of evaporator tank, and using guipure come instead of original
Steel band, due to the macropore of guipure, material is not hindered and is directly contacted with the upper plate of heat source passages, thus heat exchange efficiency with it is traditional
Climbing film evaporator and falling film evaporator are equally matched, but due to the scraper for having net, make heating surface non flouling behaviour, will not also block up
Plug.
Brief description of the drawings
The integrated MVR evaporation dryings system schematics of Fig. 1.
Fig. 2 is many evaporator tanks integration MVR evaporation drying system schematics.
Fig. 3 is many evaporator tanks integration MVR evaporation drying system schematics that waste heat is recycled.
Fig. 4 is A-A schematic cross-sectional views in Fig. 1.
Fig. 5 is the heat source passages schematic diagram that patent 2016200533373 is set under steel band.
In figure, 1-casing, 2-evaporator tank, 3-heat source passages, 4-feed pipe, 5-scraper guipure, 6-both vapor compression
Machine, 7-steam-out (SO) valve, 8-steam heater, 9-hot water basin, 10-circulating pump, 11-fixed gas drain valve, 12-cold
Solidifying water discharging valve, 13-solids outlet port, 14-steam (vapor) outlet, the outer blow-off line of 21-left box body, the outer steam discharge of 22-right case
Pipeline, the steam of 23-backflow steam heater bottom, 24-steel band.
Arrow is steam flow direction in figure.
Specific embodiment
The integrated MVR evaporation dryings system schematics of Fig. 1, Fig. 2 shows for many evaporator tanks integration MVR evaporation drying systems
It is intended to, it is a seal case, feed pipe is set in casing top, the solid discharge of locking airway dysfunction is set in bottom half
Mouthful, in casing end, steam (vapor) outlet is set, box house sets an evaporator tank, sees Fig. 1, and Fig. 2,3 set zigzag arrangement
Nine evaporator tanks, evaporator tank is along Flow of Goods and Materials direction, downward-sloping five degree；Scraped annular along evaporator tank length direction, is set
Material guipure；Outside the enclosure portion, is provided with interconnected steam heater and hot water basin, and the bottom of hot water basin is by circulation
Pump, connection is located at the heat source passages of evaporator tank discharge end, the heat source passages of evaporator tank feed end, connection steam heater bottom；
Steam heater bottom also by vapour compression machine, connects the steam (vapor) outlet of casing；Hot water basin top, connection fixed gas discharge
Valve；Between the heat source passages of evaporator tank feed end and steam heater bottom, a pipeline, pipe end connection condensed water are drawn
Drain valve, between the bottom of steam heater and vapour compression machine, draws a pipeline, pipe end connection steam valve.
Fig. 3 is many evaporator tanks integration MVR evaporation drying system schematics that waste heat is recycled.Increased fixed gas and cold
Solidifying water, return-flow system, carries out waste heat recycling again, reduces energy consumption.
The course of work of the present invention：Material to be evaporated enters in evaporation tank body from feed pipe 4, and film-like is distributed in evaporator tank
On scraper guipure 5 in 2, and to evaporator tank low side flow, due to being blocked by scraper guipure, its flow velocity substantially with scraper net
The speed sync of band.Because the mesh of scraper guipure is larger, liquid through guipure directly with evaporator tank contacts baseplate, and evaporator tank
Base plate is heated by hot water, therefore the material that is evaporated to low side while move, while by thermal evaporation, concentration is stepped up,
Rationally control inlet amount, when material is moved to discharge end, is evaporated completely.The steam of output is evaporated, is gone out from the steam of casing
Mouthful outflow, after being compressed through vapour compression machine 6, sends into steam heater 8, the low temperature that the steam of high enthalpy is sent back to evaporation trench bottom
Hot water mixes, output high-temperature-hot-water, and high-temperature-hot-water is pumped into evaporator tank bottom through circulation again, and forms inverse with Flow of Goods and Materials direction
Stream, for the evaporation of material provides heat energy, when the hot water spontaneous evaporation groove other end is exported to flow out, part heat is absorbed by evaporator tank,
Water temperature reduction, the hot water of this low temperature returns steam heater circulation heat-carrying.With the carrying out of evaporation, the water in system increases
Plus, the liquid level in hot water basin can rise, and the liquid surface lifting in hot water basin, tapping valve can be adjusted automatically by liquid level gauge
Aperture, the liquid level in basin is maintained in the liquid level of setting.Fixed gas is controlled by the air pressure in hot water basin,
When air pressure is higher than setting value in basin, pressure sensor can assign the instruction for increasing exhaust valve opening, increase capacity, work as storage
When air pressure is less than setting value in gas tank, pressure sensor can assign the instruction for reducing exhaust valve opening, reduce capacity.Fixed gas
With discharging for condensed water, there is certain heat entrainment discharge, be this respectively by they send into evaporators highest and time
Two-layer evaporator tank high, for the preheating to material or early stage evaporation heating.
It is below case to process the waste water of 1 ton of saliferous 8% per hour, sketches the course of work of the invention.Design condition is such as
Under：
1) 1 ton of waste water, wherein 80 kilograms of salt content, 920 kilograms of water are processed per hour；
2) vapour compression machine entrance is designed by -0.03MPa, and corresponding evaporating temperature is 90 DEG C；
3) outlet of vapour compression machine is designed by 0.05MPa, and corresponding vapor (steam) temperature is 110 DEG C, and vapour compression machine comes in and goes out
Mouth pressure difference 0.08MPa, 20 DEG C of gateway temperature rise, match power 50KW；
4) ton hour of quantity of circulating water 500, the hydraulic pressure into evaporator tank heat source passages is designed by 0.1MPa, and temperature presses 108 DEG C
Design, from the water that evaporator tank thermal source admittance is returned, pressure is designed by 0.05MPa, and by 106.5 DEG C of designs, the temperature difference is 1.5 to temperature
DEG C, heat load is 500 × 1000 × 1.5 × 1=750000Kcal to recirculated water per hour；
5) 920 kilograms of evaporator tank evaporated water, 65 DEG C of temperature rise, required heat per hour：920×65×1+920×454
(heat of vaporization of water, unit is Kcal/kg)=566400Kcal；
Knowable to the above-mentioned 4th, the 5th article of analytical calculation, the heat that hot water is loaded into is more than evaporation and evaporates required heat,
And hot water, from entering out, the temperature difference only has 1.5 degree of the range of decrease, evaporation can be considered as substantially is persistently entered in an environment for constant temperature
Capable.This process is an inner cyclic process for heat, and heat is transmitted to evaporator tank by hot water, and be transmitted to for heat by evaporator tank
Material is evaporated, and output steam, steam is returned in water, and heat is passed back feedwater.And for water it is then one unidirectional
Flowing, after the steam of evaporator tank output mixes with hot water, steam generation phase transformation changes into aqueous water, and from condensed water discharge outlet
Discharge system;
6) 80 kilograms of the solid salt discharged per hour, 60 DEG C of temperature rise, takes away heat 3840Kcal;
7) 920 kilograms of the distilled water discharged per hour, 40 DEG C of temperature rise, takes away heat 36800Kcal;
8) water vapour that the not condensing discharged per hour is mingled with takes away heat 2000Kcal;
9) heat consumption of insulation loss per hour：6960Kcal.
Summary the 6th, 7,8,9, four consumption of calorie are 49600Kcal, and these heats are main by vapour compression machine
Acting is provided, and vapour compression machine actual power consumption is 45KW.H, and the energy that can be provided is 860Kcal/KW.H × 45=38700
Kcal, this energy can not meet the heat demand of system, and breach is 1090 Kcal, therefore is also supplemented with heat, such as uses steam
Supplement, needs 20 kilograms of supplement per hour, and the heat brought into is 545（The heat of vaporization of water）×20=1090 Kcal.
Claims (2)
1. integration MVR evaporation drying systems, an including seal case, set feed pipe, in bottom half in casing top
The solids outlet port of locking airway dysfunction is set, steam (vapor) outlet is set in casing top or end, it is characterized in that：Set in box house
At least one, at most 50 is put in the evaporator tank arranged in a zigzag；The evaporator tank along Flow of Goods and Materials direction, it is downward-sloping not
More than the angle of octave；Along evaporator tank length direction, outside the inside of evaporator tank and evaporator tank below between, annular is set
Scraper guipure, evaporation trench bottom sets heat source passages；Outside the casing, interconnected steam heater and hot water is provided with
Basin, the bottom of hot water basin is by circulating pump, heat source passages of the connection at evaporator tank discharge end, at evaporator tank feed end
Heat source passages, connect steam heater bottom；The bottom of steam heater also by vapour compression machine, connects the steaming of casing
Vapor outlet；On the top of hot water basin, fixed gas drain valve is connected；In the heat source passages and steam heater of evaporator tank feed end
Between bottom, draw a pipeline, pipe end connection condensed water elimination valve, the bottom of steam heater and vapour compression machine it
Between, draw a pipeline, pipe end connection steam valve.
2. integrated MVR evaporation dryings system according to claim 1, it is characterised in that：On the connection hot water basin
The other end of the fixed gas drain valve in portion, the heat source passages in connecting box body at one evaporator tank discharge end of highest, highest one
Heat source passages at evaporator tank feed end, the outer blow-off line of connection right case；In the condensation of the connection steam heater bottom
The other end of water discharging valve, connection casing heat source passages from top to bottom at Article 2 evaporator tank discharge end, Article 2 evaporator tank
Heat source passages at feed end, then connect the outer blow-off line of left box body；At the top-down Article 3 evaporator tank feed end of casing
Heat source passages, connect steam heater bottom.
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| CN201621370605.0U CN206262122U (en) | 2016-12-14 | 2016-12-14 | Integrated MVR evaporation dryings system |
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| CN201621370605.0U CN206262122U (en) | 2016-12-14 | 2016-12-14 | Integrated MVR evaporation dryings system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371825A (en) * | 2018-05-04 | 2018-08-07 | 吉林北沙制药有限公司 | A kind of mocromembrane evaporator, the distillation system comprising mocromembrane evaporator and the rectificating method using mocromembrane evaporator |
| CN108452542A (en) * | 2018-05-04 | 2018-08-28 | 美清科技（北京）有限公司 | Liquid vaporising unit and liquid evaporation technique |
| CN108862430A (en) * | 2018-05-14 | 2018-11-23 | 广州晟启能源设备有限公司 | Dope belt evaporative crystallization drying machine |
| CN115198113A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Solar lithium extraction equipment |
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2016
- 2016-12-14 CN CN201621370605.0U patent/CN206262122U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371825A (en) * | 2018-05-04 | 2018-08-07 | 吉林北沙制药有限公司 | A kind of mocromembrane evaporator, the distillation system comprising mocromembrane evaporator and the rectificating method using mocromembrane evaporator |
| CN108452542A (en) * | 2018-05-04 | 2018-08-28 | 美清科技（北京）有限公司 | Liquid vaporising unit and liquid evaporation technique |
| CN108862430A (en) * | 2018-05-14 | 2018-11-23 | 广州晟启能源设备有限公司 | Dope belt evaporative crystallization drying machine |
| CN108862430B (en) * | 2018-05-14 | 2024-03-15 | 广州晟启能源设备有限公司 | Concentrated liquid belt type evaporation crystallization dryer |
| CN115198113A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Solar lithium extraction equipment |
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Legal Events
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| GR01 | Patent grant | ||
| 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 |
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| TR01 | Transfer of patent right |