CN104645646A - Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device - Google Patents
Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device Download PDFInfo
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- CN104645646A CN104645646A CN201510080873.2A CN201510080873A CN104645646A CN 104645646 A CN104645646 A CN 104645646A CN 201510080873 A CN201510080873 A CN 201510080873A CN 104645646 A CN104645646 A CN 104645646A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device. A heating chamber and an evaporation chamber are respectively divided into first-stage and second-stage heating chambers and evaporation chambers, and to-be-evaporated feed liquid is fed into a heated layer of the heating chamber by a pipeline; the upper end of a water reception machine is connected with a steam outlet of the second-stage evaporation chamber, a reflow horizontal pipe is arranged between the lower end of the left side of the water reception machine and the second-stage heating chamber, steam and steam condensation water discharged from the second-stage evaporation chamber and a heating layer of a second-stage heater are subjected to steam-water separation in the water reception machine, so that secondary steam and steam condensation water are obtained; and a steam recycling device comprises a vacuum pump and a circulating pipe, the separated secondary steam is pressurized and pumped in a heating layer of the first-stage heating chamber by the vacuum pump so as to provide all or part of a heat source for the first-stage heating chamber. According to the device, secondary steam produced in the process of heating evaporation is pressurized and pumped in the first-stage heating chamber and is used as all or part of heat of the first-stage heating chamber, so that energy is saved, and the recovery of latent heat in negative-pressure secondary steam is realized, so that circulating cooling water for cooling the secondary steam can be saved.
Description
Technical field
The present invention relates to multiple-effect vacuum evaporation concentration device, be specifically related to full heat and latent heat recovery type multiple-effect vacuum evaporation concentration device.
Background technology
Multiple-effect vacuum evaporation concentration device is evaporation concentration equipment conventional at present, for carrying out evaporation and concentration to feed liquid, existing multiple-effect vacuum evaporation concentration device normally by feed liquid to be evaporated after Multi-stage heating and vaporising device, gas-water separation is carried out in drop pan, the high-temperature steam condensate water obtained after separation enters condensate water collecting tank, then recirculated cooling water is injected to condensate water collecting tank interlayer, by discharge after the cooling of high-temperature steam condensate water, the steam obtained after separation passes through condensation, chiller treatment is discharged after becoming normal temperature condensate water, through cooled on-condensible gas vacuum exhaust or enter other process, this evaporative condenser mode does not utilize fully to the energy, waste a large amount of energy and recirculated cooling water moisturizing, and complex process, there is significant limitation.
Summary of the invention
Technical problem to be solved by this invention is existing multiple-effect vacuum evaporation concentration device complex process, produces the problem of waste because the energy can not make full use of.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of full heat and latent heat recovery type multiple-effect vacuum evaporation concentration device, comprise heating clamber, vaporization chamber, drop pan, described heating clamber comprises the one-level heating clamber and secondary heating clamber that set gradually, feed liquid to be evaporated by feed liquid pipeline enter described one-level, secondary heating clamber by thermosphere, the lower end of the zone of heating of described one-level heating clamber connects the first steam trap, and the steam condensate formed in described one-level heating clamber is regularly discharged through described first steam trap;
Described vaporization chamber comprises the one-level vaporization chamber and dual evaporation room of being inverted setting successively, and described one-level vaporization chamber is connected between described one-level heating clamber and described secondary heating clamber by pipeline, and the left side of described dual evaporation room connects described secondary heating clamber;
The upper end of described drop pan connects the steam (vapor) outlet on the right side of described dual evaporation room by bend pipe, the lower end, left side of described drop pan is provided with between described secondary heating clamber the backflow transverse tube be communicated with, the unnecessary steam of discharging in the evaporated vapor of being discharged by described dual evaporation room and described secondary heater zone of heating and steam condensate carry out gas-water separation in described drop pan, obtain indirect steam and steam condensate, the lower end of described drop pan connects the second steam trap, steam condensate after being separated enters described second steam trap, and regularly discharges;
Vapor recycle retracting device, comprise vavuum pump and circulating line, indirect steam after being separated is by pumping into described circulating line after described vavuum pump adiabatic compression, and enter described one-level heating clamber through described circulating line, for described one-level heating clamber provides all or part of heating source, the lower end of described vavuum pump connects the 3rd steam trap, the steam condensate produced with exhaust steam compression.
In such scheme, also comprise condensate water heat recovering device, described condensate water heat recovering device comprises heat exchanger, condensed water in high temperature recycling can, described heat exchanger series connection is incorporated on the feed liquid pipeline of described one-level heating clamber and described secondary heating clamber, described first, second, and third steam trap is connected to the water inlet of described condensed water in high temperature recycling can respectively by pipeline, and the delivery port of described condensed water in high temperature recycling can connects described heat exchanger.
In such scheme, delivery pump is provided with between described condensed water in high temperature recycling can and described heat exchanger, high-temperature steam condensate water after reclaiming pumps in the zone of heating of described heat exchanger by described delivery pump, with the feed liquid heat exchange to be evaporated be subject to through described heat exchanger in thermosphere, discharge after described high-temperature steam condensate water obtains lowering the temperature, enters described one-level, secondary heating heating indoor after described feed liquid to be evaporated obtains preheating.
In such scheme, the pipeline of described first, second, and third steam trap both sides is respectively equipped with Valve controlling assembly.
In such scheme, the lower end of described one-level heating clamber and described secondary heating clamber is respectively equipped with cleaning waste pipe, and described cleaning waste pipe is provided with by-pass valve control.
In such scheme, described vavuum pump is special high back pressure vavuum pump.
In such scheme, the upper end of described one-level heating clamber is provided with steam pressure gauge and safety valve.
In such scheme, described one-level, secondary heating clamber are shell and tube or plate type heat exchanger, and are divided into corresponding by thermosphere and zone of heating respectively by heat transfer wallboard.
In such scheme, described special high back pressure vavuum pump arranges variable-frequency motor, and described variable-frequency motor is controlled by PLC.
In such scheme, described heating clamber and described vaporization chamber can also be more than three grades or three grades.
The present invention, the steam vacuum produced in heating evaporation process is extracted out and after adiabatic compression, pumps into the zone of heating of one-level heating clamber, as the part or all of heat of one-level heating clamber, save to the energy of one-level oven heats, thus realize reclaiming the latent heat in the negative pressure secondary steam of vacuum evaporation formation, reach fully energy-conservation object, simultaneously, indirect steam does not need condensation, indirect steam condensate water cooling medium can adopt feed liquid to be evaporated, eliminate a large amount of recirculated cooling waters, both a large amount of electric energy needed for circulating cooling water cooling tower and delivery pump had been saved, also a saving recirculated cooling water moisturizing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 is the structural representation of the specific embodiment of the invention 2.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of full heat and latent heat recovery type multiple-effect vacuum evaporation concentration device, comprise heating clamber, vaporization chamber, drop pan 50, heating clamber comprises the one-level heating clamber 10 and secondary heating clamber 30 that set gradually, one-level heating clamber 10 and secondary heating clamber 30 adopt shell and tube or plate type heat exchanger, and being divided into by thermosphere and zone of heating by heat transfer wallboard respectively, double-layer thermal-insulation, ensures to heat fully and prevents thermal waste.Feed liquid to be evaporated enters one-level heating clamber 10 by pipeline and secondary heating clamber 30 heats, and vaporization chamber comprises the one-level vaporization chamber 20 and dual evaporation room 40 that set gradually, evaporates respectively to feed liquid to be evaporated, and feed liquid to be evaporated is fully concentrated.Heating clamber and vaporization chamber can also be more than three grades or three grades.Below in conjunction with specific embodiment the present invention made and further illustrating:
Specific embodiment 1:
As Fig. 1, the lower end of one-level heating clamber 10 zone of heating connects the first steam trap 13, the left upper portion of one-level heating clamber 10 is provided with steam inlet 14, steam enters one-level heating clamber 10 zone of heating from steam inlet 14 provides heat for it, one-level heating clamber 10 heats feed liquid to be evaporated, the steam condensate formed in one-level heating clamber 10 is regularly discharged through the first steam trap 13, guarantees that the steam in one-level heating clamber 10 is saturated dry saturated steam.The upper end of one-level heating clamber 10 is provided with steam pressure gauge and safety valve 11, ensures to heat in the force value preset, and guarantees production safety.The lower end of one-level heating clamber 10 and secondary heating clamber 30 is respectively equipped with the first cleaning waste pipe 12 and the second cleaning waste pipe 31, first cleaning waste pipe 12 and the second cleaning waste pipe 31 are respectively equipped with by-pass valve control, the cleaning waste water of room in equipment is flowed out from the first cleaning waste pipe 12 and the second cleaning waste pipe 31.
One-level vaporization chamber 20 is connected between one-level heating clamber 10 and secondary heating clamber 30 by pipeline, under the effect of feed liquid after one-level heating clamber 10 heats in vacuum, one-level vaporization chamber 20 is sprayed into from jet pipe, feed liquid sprays into one-level vaporization chamber 20 and is formed vaporific, moisture is evaporation rapidly in one-level vaporization chamber 20, unevaporated feed liquid is back to heating by thermosphere continuation of one-level heating clamber 10 by the first return duct 21, so circulates, until concentrated qualified.The steam that one-level vaporization chamber 20 is evaporated enters the zone of heating of secondary heating clamber 30, heat by the feed liquid in thermosphere to it, the left side of dual evaporation room 40 connects secondary heating clamber 30, feed liquid after secondary heating clamber 30 heats enters dual evaporation room 40, evaporation and concentration in dual evaporation room 40, unevaporated feed liquid is back to heating by thermosphere continuation of secondary heating clamber 30 by the second return duct 42, and circulation is until concentrated qualified.
The upper end of drop pan 50 connects the steam (vapor) outlet 41 on the right side of dual evaporation room 40 by bend pipe, lower end, left side connects the zone of heating of secondary heating clamber 40 by backflow transverse tube 32, the unnecessary steam of discharging in the evaporated vapor of being discharged by dual evaporation room 40 and secondary heater 30 zone of heating and steam condensate carry out gas-water separation in drop pan 50, obtain secondary negative pressure steam and steam condensate respectively, the lower end of drop pan 50 connects the second steam trap 51, steam condensate after being separated enters the second steam trap 51, and regularly discharges.
The present invention includes vapor recycle retracting device, comprise vavuum pump 60 and circulating line 62, secondary negative pressure steam after drop pan 50 carbonated drink is separated is extracted out by vavuum pump 60, and it is high to the high high temperature recompression steam to 121 degrees Celsius of 0.2Mpa, temperature to be compressed into gauge pressure under adiabatic heat-insulation, vavuum pump 60 compression chamber is ined succession the 3rd steam trap 61, the steam condensate produced in vavuum pump 60 adiabatic compression process is regularly discharged from the 3rd steam trap 61, and the condensate water regularly getting rid of compression generation makes recompression steam be dry saturated steam.High temperature recompression dry saturated steam enters in circulating line 62, one-level heating clamber 10 is entered by circulating line 62, all or part of heating source can be provided for one-level heating clamber 10, save the industrial steam originally needing to inject in one-level heating clamber 10, reach the object that the latent heat in negative pressure secondary steam is reclaimed, also eliminate condensation, a large amount of recirculated cooling water of cooling needed for indirect steam simultaneously, greatly save the energy from two aspects and economize on water.Drop pan 50 is provided with vacuum meter 52 with the pipeline of vavuum pump 60, changes with detection and control vacuum.In the present invention, the preferred special high back pressure vavuum pump of vavuum pump 60, this special high back pressure vavuum pump arranges variable-frequency motor, and variable-frequency motor is controlled by PLC, flexible operation, improves automaticity.
In the present invention, the pipeline of steam trap both sides is respectively equipped with Valve controlling assembly, ensures that steam condensate can only unidirectionally flow out as required.
Specific embodiment 2:
As Fig. 2, compared with specific embodiment 1, add condensate water heat recovering device, condensate water heat recovering device comprises heat exchanger 80 and condensed water in high temperature recycling can 70, heat exchanger 80 accesses on the feeding liquid pipeline of one-level heating clamber 10, first steam trap 13, second steam trap 51 and the 3rd steam trap 61 are connected to the water inlet of condensed water in high temperature recycling can 70 respectively by pipeline, and are discharged in condensed water in high temperature recycling can 70 by the steam condensate of high temperature.
The delivery port of condensed water in high temperature recycling can 70 connects heat exchanger 80, establish zone of heating in heat exchanger 80 and be subject to thermosphere, delivery pump 71 is provided with between condensed water in high temperature recycling can 70 and heat exchanger 80, high-temperature steam condensate water after reclaiming pumps in the zone of heating of heat exchanger 80 by delivery pump 71, with the feed liquid heat exchange to be evaporated be subject to through heat exchanger 80 in thermosphere, discharge after high-temperature steam condensate water obtains lowering the temperature, feed liquid to be evaporated enters heating in one-level heating clamber 10 and secondary heating clamber 30 after obtaining preheating.The heat that feed liquid to be evaporated after preheating needs in one-level heating clamber 10 reduces, and saves the energy.In addition, high-temperature steam condensate water with the process of feed liquid heat exchange to be evaporated in self lowered the temperature, eliminate a large amount of recirculated cooling waters that before discharge high-temperature steam condensate water, cooling down needs in the middle of producing, thus the Exposure degree realized high temperature evaporation condensate water, both production stage was simplified, the energy can be made again to be recycled recycling, and practical value is high.
The present invention, by the steam produced in heating evaporation process is pumped into one-level heating clamber, as the part or all of heat of one-level heating clamber, save to the energy of one-level oven heats, thus realize reclaiming the latent heat in negative pressure secondary steam, reach fully energy-conservation object; High temperature evaporation condensate water is collected in condensed water in high temperature recycling can 70, when evaporation feed liquor and feed liquid to be evaporated carry out heat exchange, evaporation and condensation water obtains cooling discharge, and feed liquid to be evaporated obtains preheating, thus realizes the Exposure degree to high temperature evaporation condensate water; Meanwhile, eliminate condensation, cooling indirect steam and a large amount of recirculated cooling water needed for cooling steam condensate water, the energy be fully used and reclaim and fully save water and energy, substantially increasing energy utilization rate, there is very high practical value.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structure change made under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (10)
1. full heat and latent heat recovery type multiple-effect vacuum evaporation concentration device, comprise heating clamber, vaporization chamber, drop pan, it is characterized in that,
Described heating clamber comprises the one-level heating clamber and secondary heating clamber that set gradually, feed liquid to be evaporated by feed liquid pipeline enter described one-level, secondary heating clamber by thermosphere, the lower end of the zone of heating of described one-level heating clamber connects the first steam trap, and the steam condensate formed in described one-level heating clamber is regularly discharged through described first steam trap;
Described vaporization chamber comprises the one-level vaporization chamber and dual evaporation room that set gradually, and described one-level vaporization chamber is connected between described one-level heating clamber and described secondary heating clamber by pipeline, and the left side of described dual evaporation room connects described secondary heating clamber;
The upper end of described drop pan connects the steam (vapor) outlet on the right side of described dual evaporation room by bend pipe, the lower end, left side of described drop pan is provided with between described secondary heating clamber the backflow transverse tube be communicated with, the unnecessary steam of discharging in the evaporated vapor of being discharged by described dual evaporation room and described secondary heater zone of heating and steam condensate carry out gas-water separation in described drop pan, obtain indirect steam and steam condensate, the lower end of described drop pan connects the second steam trap, steam condensate after being separated enters described second steam trap, and regularly discharges;
Vapor recycle retracting device, comprise vavuum pump and circulating line, indirect steam after being separated is by pumping into described circulating line after described vavuum pump adiabatic compression, and enter described one-level heating clamber through described circulating line, for described one-level heating clamber provides all or part of heating source, the lower end of described vavuum pump connects the 3rd steam trap, the steam condensate produced with exhaust steam compression.
2. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, also comprise condensate water heat recovering device, described condensate water heat recovering device comprises heat exchanger, condensed water in high temperature recycling can, described heat exchanger series connection is incorporated on the feed liquid pipeline of described one-level heating clamber and described secondary heating clamber, described first, second, and third steam trap is connected to the water inlet of described condensed water in high temperature recycling can respectively by pipeline, and the delivery port of described condensed water in high temperature recycling can connects described heat exchanger.
3. full heat as claimed in claim 2 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, delivery pump is provided with between described condensed water in high temperature recycling can and described heat exchanger, high-temperature steam condensate water after reclaiming pumps in the zone of heating of described heat exchanger by described delivery pump, with the feed liquid heat exchange to be evaporated be subject to through described heat exchanger in thermosphere, discharge after described high-temperature steam condensate water obtains lowering the temperature, enters described one-level, secondary heating heating indoor after described feed liquid to be evaporated obtains preheating.
4. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, is characterized in that, the pipeline of described first, second, and third steam trap both sides is respectively equipped with Valve controlling assembly.
5. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, the lower end of described one-level heating clamber and described secondary heating clamber is respectively equipped with cleaning waste pipe, and described cleaning waste pipe is provided with by-pass valve control.
6. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, described vavuum pump is special high back pressure vavuum pump.
7. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, the upper end of described one-level heating clamber is provided with steam pressure gauge and safety valve.
8. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, described one-level, secondary heating clamber are shell and tube or plate type heat exchanger, and are divided into corresponding by thermosphere and zone of heating respectively by heat transfer wallboard.
9. full heat as claimed in claim 6 and latent heat recovery type multiple-effect vacuum evaporation concentration device, is characterized in that, described special high back pressure vavuum pump arranges variable-frequency motor, and described variable-frequency motor is controlled by PLC.
10. full heat as claimed in claim 1 and latent heat recovery type multiple-effect vacuum evaporation concentration device, it is characterized in that, described heating clamber and described vaporization chamber can also be more than three grades or three grades.
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| CN201510080873.2A CN104645646A (en) | 2015-02-15 | 2015-02-15 | Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device |
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| CN201510080873.2A CN104645646A (en) | 2015-02-15 | 2015-02-15 | Total heat and latent heat recovery type multi-effect vacuum evaporation and concentration device |
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Cited By (4)
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| CN109185862A (en) * | 2018-10-24 | 2019-01-11 | 王云涛 | Steam circulation |
| CN109432809A (en) * | 2018-12-28 | 2019-03-08 | 深圳市鼎深科技有限公司 | A kind of efficient cryogenic vapo(u)rization system |
| CN111732143A (en) * | 2020-07-29 | 2020-10-02 | 昆山威胜达环保设备有限公司 | Evaporation concentration system |
| CN114772671A (en) * | 2022-06-14 | 2022-07-22 | 北京化工大学 | Two-stage MVR single-effect forced circulation evaporation production device and method for salt-containing wastewater |
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Application publication date: 20150527 |