CN201704094U - Circulating evaporation device - Google Patents
Circulating evaporation device Download PDFInfo
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- CN201704094U CN201704094U CN2010201558987U CN201020155898U CN201704094U CN 201704094 U CN201704094 U CN 201704094U CN 2010201558987 U CN2010201558987 U CN 2010201558987U CN 201020155898 U CN201020155898 U CN 201020155898U CN 201704094 U CN201704094 U CN 201704094U
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Abstract
The utility model discloses an evaporation device used for harmless treatment on sewage water in paper making industry and the like. The technical scheme includes that in an existing device, a secondary steam pipe is connected into an inlet of a compressor, an outlet of the compressor is connected with a steam inlet of a pressure stabilizer, another steam inlet pipe of the pressure stabilizer is connected with a boiler fresh steam pipe, a steam outlet of the pressure stabilizer is connected into a falling film evaporator, at least one circulating pipe connected with a circulating pump is arranged on the falling film evaporator, an outlet of a steam stripping device of the falling film evaporator is communicated with a non-condensable gas pipe and a heavy-dirt condensate water outlet pipe, the heavy-dirt condensate water outlet pipe is communicated with a water inlet of a heavy-dirt condensate water tank, a water outlet of the heavy-dirt condensate water tank is communicated with a heavy-dirt condensate water feeding pipe, and a condensate water outlet pipe of a condenser is communicated with a water inlet of the heavy-dirt condensate water tank.
Description
Technical field
The utility model relates to a kind of vapo(u)rization system, sewage is carried out the evaporation unit of harmless treatment especially for industries such as papermaking, it reaches connecting pipe, valve and pump and constitutes by being evaporated liquid supplied materials pipe, well heater, falling-film evaporator, dope feeding tube, boiler live steam pipe, secondary steam pipe.
Background technology
Vapo(u)rization system is being played the part of very important role in modern industry, or realize the evaporation concentration of certain solution or realize the extracting and separating of variant production, be widely used in multiple fields such as papermaking, petrochemical industry, food-drink processing, effectively reduce the energy consumption of vapo(u)rization system, have great social effect and economic benefit.For traditional vapo(u)rization system, in actual use in order to save running cost, reduce energy expenditure and realize different arts demands, often adopt multiple-effect evaporation, wherein the I single-effect evaporator uses the boiler live steam as the heating thermal source, thereafter each single-effect evaporator utilizes one to imitate secondary steam that evaporation produced as the heating thermal source successively, and end effect secondary steam enters condenser condenses, forms whole evaporation process.Hence one can see that, and the condenser of condensation end effect secondary steam is not directly contribution for evaporation, also will be equipped with other utility appliance for this reason, and the part heat is wasted, and can not obtain effective recycle.But it is indispensable again, is used for the end effect secondary steam condensation is made it to form vacuum, forms evaporation power with live steam, finishes the process of consecutive evaporation.
Calculate in theory, the tradition vapo(u)rization system adopts the effect number of vaporizer many more, the heat energy utilization rate is just high more, so traditional vapo(u)rization system is in order to cut down the consumption of energy, improve utilization efficiency of heat energy, in most cases all adopt the array mode of multiple-effect evaporator, make that so just the total system number of devices is various, occupied ground increases, the Controlling System complexity.And the multiple-effect evaporator system is when vaporizer effect number is increased to a certain degree, because effective temperature difference reduces, temperature loss increases, evaporation capacity descends, every increase 1st effective evaporator all will be paid great equipment input, and energy-saving effect no longer improves significantly, thus at present basically the vaporizer of vapo(u)rization system imitate number all five to seven imitate between, the target that further improves efficiency of energy utilization on traditional vapo(u)rization system is absorbed in technical bottleneck.
Summary of the invention
The utility model provides a kind of efficiency of energy utilization that improves, and at utmost reduces the evaporation unit of all devices quantity, minimum occupied ground.
The utility model is by being evaporated liquid supplied materials pipe, well heater, falling-film evaporator, the dope feeding tube, boiler live steam pipe, secondary steam pipe, and connecting pipe, in the existing apparatus that valve and pump constitute, secondary steam pipe is inserted the inlet of compressor, the outlet of compressor connects a steam-in of buffer tank, another steam inlet tube of buffer tank connects boiler live steam pipe, the vapour outlet of buffer tank inserts falling-film evaporator, at least be provided with a circulation tube that is connected with recycle pump on the falling-film evaporator, the stripper plant outlet of falling-film evaporator is communicated with non-condensable gas pipe and heavy foul condensate outlet pipe, heavy foul condensate outlet pipe is communicated with the water-in of heavy foul condensate jar, heavy foul condensate jar water outlet is communicated with heavy foul condensate induction pipe, and the condenser condenses rising pipe is communicated with the water-in of heavy foul condensate jar.
In the circulation evaporator of the present utility model, be provided with compressor condensation water pot and light foul condensate jar, compressor condensation water pot is communicated with secondary steam pipe by different vapour pipes respectively with light foul condensate jar, between compressor and compressor condensation water pot with being communicated with communicating pipe, be connected by another pipe between compressor condensation water pot and light foul condensate jar
Among the embodiment of circulation evaporator of the present utility model, falling-film evaporator is provided with two solution circulated pipes, is provided with recycle pump on it, and two groups of circulation tubes are arranged at the both sides of housing internal partition respectively.
In the most preferred embodiment of circulation evaporator of the present utility model, the bottom, big area district that is in stripper plant in falling-film evaporator is provided with the light foul condensate pipe that is communicated with light foul condensate jar.
In the circulation evaporator of the present utility model, be provided with automatically controlled valve at live steam Guan Shangke.
The utility model is owing to adopted single-stage vacuum-evaporation, vaporization temperature is low, is particularly suitable for the stronger material of thermo-sensitivity, is difficult for making the material sex change, can improve simultaneously system's effective temperature difference, increase evaporation capacity, reduce thermosteresis, save production site, significantly reduce the device fabrication cost.Each equipment of tradition vapo(u)rization system all has calorific loss in various degree, and the calorific loss of accumulative total is considerable; The hold facility place that quantity is various is very big, and facility investment is very high, and certain temperature head makes that the effective temperature difference of each effect is few after distributing to each single-effect evaporator, has limited evaporation capacity.And the utility model only has a falling-film evaporator, can obtain the higher effective temperature difference, and by evaporating principle as can be known, effective temperature difference is big more, and evaporation capacity is high more; The utility model is because number of devices is few simultaneously, so occupied ground is little, controlling unit and less investment have been saved a large amount of social resources.
Owing to be provided with compressor condensation water pot and light foul condensate jar, can be used for collecting the water that coagulates that compressor forms in the utility model, and feed back in the compressor by the steam-pipe that is provided with separately on it gas with flash distillation in it.These technical measures have promptly improved the efficient of device, make intrasystem energy, liquid, gas be able to sufficient utilization again.
In the utility model because a plurality of circulation tubes are set in falling-film evaporator, its best mode is for being provided with two circulation tubes, and two groups of circulation tubes are arranged at the both sides of housing internal partition respectively, like this work the time can make the solution that just entered in the vaporizer after circulating and evaporating could with the solution thorough mixing of dividing plate both sides differing temps and concentration, can make not only that solution in the vaporizer fully circulates, heat exchange, can make device be in the top efficiency state simultaneously.
In the most preferred embodiment of the present utility model because the bottom, big area district that is in stripper plant in falling-film evaporator is provided with the light foul condensate pipe that is communicated with light foul condensate jar, can by it with the light sewage collecting of first condensation in light foul condensate jar, its COD
CrContent is delivered to different workshop sections below 450ppm, directly cycling and reutilization has satisfied the production technique needs, thereby realizes the step emission of time condensation sewage.
Be also shown in by figure,, discharge heavy foul condensate, its COD from the vaporizer small surfaces because of also being provided with heavy foul condensate jar in the utility model
CrContent can reach more than the 12000ppm, enters into heavy foul condensate jar together together with water of condensation in the condenser, concentrates to send into stripping tower and carry out stripping and handle, and becomes recycle behind the qualified water.
After on the live steam pipe automatically controlled valve being set, can replenish live steam in the utility model, whole device is under the optimum operating condition according to the state of system works.
Description of drawings
The overall system synoptic diagram that attached 1 figure is the utility model device.Each label is among the figure:
1-is evaporated the liquid liquid-inlet pipe; The 2-fresh feed pump; The 3-well heater; 4-is evaporated the liquid feed-pipe; The 5-electric control valve; 6-dope discharge nozzle; The 7-discharging pump; The 8-electric control valve; 9-dope feeding tube; 10-compressed vapour pipe; The 11-vapour compressor; The 12-secondary steam pipe; 13-compressor condensate pipe; 14-compressor condensation water pot; 15-compressor condensed water flash steam pipe; 16-compressor condensate pump; The 17-electric control valve; 18-compressor water of condensation rising pipe; The light foul condensate jar of 19-; The light foul condensate flash distillation of 20-steam pipe; The light foul condensate pump of 21-; The 22-electric control valve; The light foul condensate induction pipe of 23-; The light foul condensate outlet pipe of 24-; 25-circulation fluid inlet tube; The 26-recycle pump; 27-circulation fluid outlet pipe; 28-circulation fluid outlet pipe; The 29-recycle pump; 30-circulation fluid inlet tube; The heavy foul condensate outlet pipe of 31-, the heavy foul condensate pump of 32-; The 33-electric control valve; The heavy foul condensate induction pipe of 34-; The heavy foul condensate jar of 35-; 36-condenser rising pipe; The 37-condenser; The 38-clear water output; The light foul condensate induction pipe of 39-; 40-clear water inlet; The 41-venting port; 42-boiler live steam pipe; 43-non-condensable gas pipe; The 44-electric control valve; The 45-falling-film evaporator; The 46-steam-in; The 47-buffer tank; The 48-electric control valve.
Embodiment
Accompanying drawing 1 is the synoptic diagram of the utility model device embodiment, has fully provided wherein each parts composition and mutual annexation among Fig. 1.A specific embodiment of the present utility model is: according to arts demand, at first determine the specifications and models and the technical parameter of major-minor equipment such as falling-film evaporator, well heater, condenser, vapour compressor.Be treated to example with black liquid, rare black liquor total amount of handling as needs is 170M
3/ H, 75 ℃ of initial temperatures, rare black liquor solid percentage composition concentration is 1.5%, and it is 15% that the black liquor after the processing requires to reach the solid content percentage concentration, and by calculating, the falling-film evaporator area is 9500M
2, 95 ℃ of shell side working temperatures, 105 ℃ of plate (or pipe) journey working temperatures; Heater area 200M
2, 75 ℃ of black liquor temperature ins, 92 ℃ of temperature outs; Condenser area 40M
295 ℃ of vapour compressor temperature ins, 105 ℃ of temperature outs, secondary steam flow rate 84M
3/ s.Machine each major-minor equipment by the above parameter designing of determining, manufacturing, and install, connect each pipeline, valve, intelligent DCS Controlling System and water pump, form complete steam compression cycle vapo(u)rization system by flow process shown in the drawings.Its user mode is as follows:
Being evaporated treatment soln---rare black liquor enters into fresh feed pump 2 inlets by being evaporated liquid supplied materials pipe 1, be fed in the well heater 3, in well heater 3, produce heat exchange with light foul condensate, rare black liquor temperature is heated to 92 ℃ by 75 ℃, and light foul condensate is cooled to certain temperature, both effectively utilized this part thermal source of water of condensation, can guaranteeing to be evaporated solution again, to enter into vaporizer be to have higher temperature, for further evaporation concentration has been created favourable condition.Being evaporated in the shell side that solution is sent to falling-film evaporator 45 of heater via 3 heating, make it arrive the capacity and the liquid level requirement of regulation, while ON cycle pump (1) 26 and recycle pump (2) 29, what falling-film evaporator 45 shell sides were interior is evaporated solution respectively through circulation fluid outlet pipe (1) 27, circulation fluid outlet pipe (2) 28 passes through circulation fluid inlet tube (1) 25 by each self-circulating pump, circulation fluid inlet tube (2) 30 is fed to the rotational flow type liquid divider, with liquid uniformly distributing each heat exchange element in vaporizer, open electric control valve 48, in vaporizer 45, feed the live steam preheating by boiler live steam pipe 42, when being evaporated liquid arrival boiling point, close live steam pipeline electric control valve 48, start vapour compressor 11.Be evaporated liquid with rapid explosive evaporatoin this moment, the secondary steam that produces enters into vapour compressor 11 by secondary steam pipe 12, secondary steam is promoted to having elevated pressures, temperature and enthalpy and steam high-quality, the high energy position, return in vaporizer 45 by compressed vapour pipe 10 again, to in vaporizer, produce heat exchange and undergo phase transition as new thermal source, becoming water of condensation drains, liquid in the vaporizer 45 is heated boiling again, produce new steam, again through vapour compressor 11 compressed actions, reciprocation cycle is finished evaporative process.
The intravital continuous evaporation concentration of liquid that is evaporated of vaporizer 45 shells, when reaching the concentration of specified requirement, open discharging pump 7, be transported to specified location via dope feeding tube 9, simultaneously, reduce owing to discharging causes the intravital liquid that is evaporated of vaporizer 45 shells, liquid level descends, fresh feed pump 2 will be opened automatically by preset program, replenish the new soln of respective volume.
The compressor water of condensation enters into compressor condensation water pot 14 by compressor condensate pipe 13, flash steam is sent into vapour compressor 11 by compressor condensed water flash steam pipe 15, again through vapour compressor 11 compressed actions, flash steam is promoted to having elevated pressures, temperature and enthalpy and steam high-quality, the high energy position, return in vaporizer 45 by compressed vapour pipe 10 again, thermal source produces heat exchange and undergoes phase transition in vaporizer as a supplement, becomes water of condensation to drain; Light foul condensate enters light foul condensate jar 19 by light foul condensate outlet pipe 24, flash steam is sent into vapour compressor 11 by light foul condensate flash distillation steam pipe 20, again through vapour compressor 11 compressed actions, flash steam is promoted to having elevated pressures, temperature and enthalpy and steam high-quality, the high energy position, return in vaporizer 45 by compressed vapour pipe 10 again, thermal source produces heat exchange and undergoes phase transition in vaporizer as a supplement, becomes water of condensation and drains.Light foul condensate is sent to well heater 3 by light foul condensate pump 21 through light foul condensate induction pipe 23, in well heater 3 be evaporated solution and produce heat exchange, to be evaporated solution temperature improves, and light foul condensate is cooled to certain temperature, both effectively utilized this part thermal source of water of condensation, can guaranteeing to be evaporated solution again, to enter into vaporizer be to have higher temperature, for further evaporation concentration has been created favourable condition.
Heavy foul condensate enters into heavy foul condensate jar 35 by heavy foul condensate outlet pipe 31, is seen off through heavy foul condensate induction pipe 34 by-heavy foul condensate pump 32 again, handles by other means, makes it reach related request.
The vapour mixture that contains poisonous non-condensable gasess such as a small amount of saturated vapor and a large amount of organic volatile and hydrogen sulfide, sulfurous gas then is sent in the condenser 37 by non-condensable gas pipe 43, the heavy foul condensate of the back formation part that is cooled, other poisonous non-condensable gases is discharged by venting port 41, burns or other processing.
By preceding as can be known described:
The utility model utilizes the water of condensation that produces behind the steam phase transforming will be evaporated solution and is preheating to certain temperature by adopting well heater, has effectively improved utilization efficiency of heat energy.Because the water of condensation that produces after the vapor generation phase transformation has higher temperature, the utility model with water of condensation be evaporated solution and enter in the well heater simultaneously by different pipelines, in well heater, produce heat exchange, be evaporated solution and be heated to certain temperature, and water of condensation is cooled to certain temperature, both effectively utilized this part thermal source of water of condensation, can guaranteeing to be evaporated solution again, to enter into vaporizer be to have higher temperature, for further evaporation concentration has been created favourable condition.
The utility model adopts from the stripping falling-film evaporator, and recycle is handled in the water of condensation classification.When thermal source steam enters in the vaporizer when participating in heat exchange, at first enter the large-area light dirty district of interchanger, because the boiling point of saturated vapor is higher than organic volatile entrained in the circulation fluid and toxic gases such as hydrogen sulfide, sulfurous gas, therefore saturated vapor at first is condensed into low smelly, nontoxic, meet environmental protection or processing requirement fully, the journey that can reflux recycle or reach the most of light dirty time condensation water that the environmental protection standard requirement can directly be discharged, and discharge through light foul condensate pipe; The vapour mixture that contains toxic gases such as fractional saturation water vapor and a large amount of organic volatile and hydrogen sulfide, sulfurous gas then can enter into the small surfaces of well heater again, a large amount of organism and toxic gas are concentrated in a spot of heavy foul condensate, discharge through heavy foul condensate pipe, handle by other means again, make it reach related request.These technical measures have played well effectively separates, and the effect that classification is handled significantly reduces the sewage quantity of being handled again and concentrates, and saves the cost of sewage disposal greatly.
The utility model adopts buffer tank to stablize the vapor pressure that enters into vaporizer, with the stable system evaporating pressure, equipment is operated steadily, reliably.System owing to liquid level change, temperature effect etc. are all multifactor, is difficult to accomplish the generation and the pressure held stationary of secondary steam in the middle of operation, be guarantee the vapo(u)rization system inlet pressure stable, need be provided with buffer tank at the evaporator inlet place.Buffer tank is accumulator again, the minor fluctuations of energy balancing evaporator inlet pressure.Because steam volume after pressurization heats up through vapour compressor significantly reduces, and therefore, buffer tank is arranged on place, vaporizer steam-in.Like this, can guarantee the stable of inlet pressure to a certain extent, not make that again the volume of buffer tank is too huge.Be provided with automatically controlled valve by the live steam pipe simultaneously, can replenish live steam in good time, make system be in the state of balance work according to the state of system works.
Claims (5)
1. circulation evaporator, by being evaporated liquid supplied materials pipe (1), well heater (3), falling-film evaporator (45), dope feeding tube (9), boiler live steam pipe (42), secondary steam pipe (12), and connecting pipe, valve and pump constitute, it is characterized in that secondary steam pipe (12) connects the inlet of compressor (11), the outlet of compressor (11) connects a steam-in of buffer tank (47), another steam-in vapour pipe of buffer tank (47) connects boiler live steam pipe (42), the vapour outlet of buffer tank (47) inserts falling-film evaporator (45), at least be provided with a circulation tube (25) that is connected with recycle pump (26) on the falling-film evaporator (45), the stripper plant outlet of falling-film evaporator (45) is communicated with non-condensable gas pipe (43) and heavy foul condensate outlet pipe (31), heavy foul condensate outlet pipe (31) is communicated with the water-in of heavy foul condensate jar (35), heavy foul condensate jar (35) water outlet is communicated with heavy foul condensate induction pipe (34), and condenser condenses rising pipe (36) is communicated with the water-in of heavy foul condensate jar (35).
2. circulation evaporator according to claim 1, it is characterized in that being provided with in the device compressor condensation water pot (14) and light foul condensate jar (19), compressor condensation water pot (14) and light foul condensate jar (19) are communicated with secondary steam pipe (12) by vapour pipe (15) and (20) respectively, compressor (11) is communicated with by pipe (13) with compressor condensation water pot (14), be communicated with by managing (18) between compressor condensation water pot (14) and light foul condensate jar (19)
3. circulation evaporator according to claim 2, it is characterized in that falling-film evaporator (45) be provided with second its be provided with the circulation tube (28) of recycle pump (29), two groups of circulation tubes are arranged at the both sides of housing internal partition respectively.
4. according to claim 2 or 3 described circulation evaporators, it is characterized in that the bottom, big area district that is in stripper plant in falling-film evaporator (45) is provided with the light foul condensate pipe (24) that is communicated with light foul condensate jar (19).
5. circulation evaporator according to claim 4 is characterized in that live steam pipe (42) is provided with automatically controlled valve (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201558987U CN201704094U (en) | 2010-04-09 | 2010-04-09 | Circulating evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201558987U CN201704094U (en) | 2010-04-09 | 2010-04-09 | Circulating evaporation device |
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| Publication Number | Publication Date |
|---|---|
| CN201704094U true CN201704094U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201558987U Expired - Lifetime CN201704094U (en) | 2010-04-09 | 2010-04-09 | Circulating evaporation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811743A (en) * | 2010-04-09 | 2010-08-25 | 兰州节能环保工程有限责任公司 | Circulation evaporator |
| CN110440140A (en) * | 2019-09-10 | 2019-11-12 | 浙江伟博化工科技有限公司 | A kind of plasticizer DINP tower gas system |
-
2010
- 2010-04-09 CN CN2010201558987U patent/CN201704094U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811743A (en) * | 2010-04-09 | 2010-08-25 | 兰州节能环保工程有限责任公司 | Circulation evaporator |
| CN110440140A (en) * | 2019-09-10 | 2019-11-12 | 浙江伟博化工科技有限公司 | A kind of plasticizer DINP tower gas system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |