CN104961178A - Evaporation type liquid concentration treatment system and treatment method thereof - Google Patents
Evaporation type liquid concentration treatment system and treatment method thereof Download PDFInfo
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- CN104961178A CN104961178A CN201510387331.XA CN201510387331A CN104961178A CN 104961178 A CN104961178 A CN 104961178A CN 201510387331 A CN201510387331 A CN 201510387331A CN 104961178 A CN104961178 A CN 104961178A
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Abstract
The invention provides an evaporation type liquid concentration treatment system which can improve the running efficiency, save the energy consumption, reduce scaling and corrosion on the running side of a working medium, reduce the equipment fault rate and solve the problems of poor use effect and short service life of the conventional system. The evaporation type liquid concentration treatment system comprises a working medium circulating system and a wastewater evaporation cooling system, wherein the working medium circulating system comprises a pressure pump; the pressure pump is connected with a steam-water heat exchanger through an expanding pipe; the steam-water heat exchanger is connected with a diffuser pipe; the diffuser pipe is connected with a liquid condensing box through an evaporator; the liquid condensing box is connected with the pressure pump to form circulation; the wastewater evaporation cooling system comprises a wastewater basin; a wastewater pump is connected with the wastewater basin; the evaporator is connected with a heat exchanger; the heat exchanger is connected with the wastewater pump; the steam-water heat exchanger is connected with the evaporator; the steam-water heat exchanger is connected with a pure water tank through the heat exchanger; a concentrated liquid tank is connected with the evaporator. The invention further provides an evaporation type liquid concentration treatment method.
Description
Technical field
The present invention relates to the technical field of environmental treatment, particularly a kind of evaporating liquid concentration treatment system and treatment process thereof.
Background technology
Useless (dirt) water concentration device of current evaporating mainly contains two kinds: a kind of is useless (dirt) water concentration device adopting thermocompressor, and another kind is useless (dirt) water concentration device of multiple-effect evaporation.But these two kinds all have weak point, useless its thermocompressor of (dirt) water concentration device of thermocompressor is adopted directly to compress the steam produced from useless (dirt) water, these steam need to carry out scrubbing, Overheating Treatment, easily produce fault, and facility investment is large, power consumption is high; Useless (dirt) water concentration device technique of multiple-effect evaporation is complicated, and steam consumption is many, and equipment is huge, and econmics comparison is poor.Front a kind of working medium is useless (dirt) water vapor, and after rear a kind of working medium, a few effect is useless (dirt) water vapor, containing the easy fouling of certain impurity, and has certain corrodibility, affects result of use and the life-span of equipment.
Summary of the invention
For existing the problems referred to above, the invention provides a kind of evaporating liquid concentration treatment system, operational efficiency can be improved, energy efficient, reduce working medium and run side fouling, corrosion, decrease equipment failure rate simultaneously, solve the problem that system result of use is poor and the life-span is short, invention also provides a kind of evaporating liquid concentration treatment process.
Technical scheme of the present invention is as follows:
A kind of evaporating liquid concentration treatment system, it comprises duplex matter system and waste water vaporization system, described duplex matter system comprises by force (forcing) pump, described force (forcing) pump connects vapor-water heat exchanger by expansion pipe, described vapor-water heat exchanger connects diffuser pipe, described diffuser pipe connects lime set case by vaporizer, described lime set case connects described force (forcing) pump and forms circulation, described waste water vaporization system comprises wastewater disposal basin, waste water pump connects described wastewater disposal basin, described vaporizer connects heat exchanger, described heat exchanger connects described waste water pump, described vapor-water heat exchanger connects described vaporizer, described vapor-water heat exchanger connects pure water tank by described heat exchanger, concentrated liquid bath connects described vaporizer.
It is further characterized in that: described vaporizer connects described heat exchanger by auxiliary heater.
A kind of evaporating liquid concentration treatment process, is characterized in that: it comprises the following steps:
(1), force (forcing) pump extracts the worker quality liquid in lime set case and pressurizes to worker quality liquid;
(2) worker quality liquid, after pressurization is entered in vapor-water heat exchanger by expansion pipe, then enters in vaporizer by diffuser pipe; Sewage is by after heat exchanger preheating simultaneously, enter in vaporizer, in vaporizer, sewage and worker quality liquid carry out indirect heat exchange, sewage evaporates after absorbing worker quality liquid heat, water becomes steam and separates from sewage, sewage is concentrated, and worker quality liquid is entered in force (forcing) pump by lime set case and enters next circulation;
(3) steam that, sewage generates in vaporizer enters vapor-water heat exchanger subsequently, indirect heat exchange is carried out with worker quality liquid, heat is passed to worker quality liquid, pure water liquid is condensed into after releasing heat, complete sewage to be separated, to concentrate, pure water liquid enters in heat exchanger and carries out heat exchange to sewage, realizes the preheating of sewage, forms the circle transmission of heat.
It is further characterized in that: in step (2), and sewage, by after heat exchanger preheating, is entered in vaporizer after being heated by auxiliary heater.
In said system of the present invention, owing to have employed duplex matter system and waste water vaporization system, worker quality liquid provides high temperature refrigerant steam by working medium circulation, high temperature refrigerant steam makes the waste water in waste water vaporization system in vaporizer, realize evaporation, the steam formed after evaporation passes to worker quality liquid heat in vapor-water heat exchanger, worker quality liquid is heated up, pure water is formed after self condensing into liquid, achieve the separation of waste water, pure water carries out preheating to waste water in a heat exchanger simultaneously, achieve the circle transmission of heat, operational efficiency can be improved, energy efficient, simultaneously owing to adopting the alone cycle of clean worker quality liquid to transmit, reduce working medium and run side fouling, corrosion, decrease equipment failure rate simultaneously, improve system result of use and work-ing life.
Accompanying drawing explanation
Fig. 1 is evaporating liquid concentration treatment system schematic diagram of the present invention.
Embodiment
See Fig. 1,
A kind of evaporating liquid concentration treatment system, it comprises duplex matter system 1 and waste water vaporization system 2, duplex matter system 1 comprises by force (forcing) pump 3, force (forcing) pump 3 connects vapor-water heat exchanger 5 by expansion pipe 4, vapor-water heat exchanger 5 connects diffuser pipe 6, diffuser pipe 6 connects lime set case 8 by vaporizer 7, lime set case 8 connects force (forcing) pump 3 and forms circulation, waste water vaporization system 2 comprises wastewater disposal basin 9, waste water pump 10 connects wastewater disposal basin 9, heat exchanger 11 connects waste water pump 10, vaporizer 7 connects heat exchanger 11 by auxiliary heater 12, vapor-water heat exchanger 5 connects vaporizer 7, vapor-water heat exchanger 5 connects pure water tank 13 by heat exchanger 11, concentrated liquid bath 14 connects vaporizer 7.
In evaporating liquid concentration treatment system of the present invention:
Vaporizer 7 is useless (dirt) water heat absorption evaporators, and useless (dirt) water absorbs working medium heat of vaporization and produces water vapor, and working medium releases heat condensation.Useless (dirt) water inlet of vaporizer 7 to be exported with auxiliary heater 12 by pipeline and is connected, steam outlet is connected with vapor-water heat exchanger 5 steam inlet by pipeline, useless (dirt) concentrated liquid outlet is connected with the import of concentrated liquid bath 14 by pipeline, refrigerant vapor import exports with diffuser pipe 6 and is connected, and the outlet of working fluid condenses liquid is connected with lime set case 8 import;
Auxiliary heater 12 is ancillary heating equipment of useless (dirt) water concentration device.Auxiliary heater 12 import is connected with useless (dirt) water out of heat exchanger 11 by pipeline, exports and is connected with useless (dirt) water inlet of vaporizer 7 by pipeline;
Diffuser pipe 6 is refrigerant vapor boosting heat risers.Diffuser pipe 6 import to be exported with vapor-water heat exchanger 5 working substance steam by pipeline and is connected, and exports and is connected with the import of vaporizer 7 refrigerant vapor by pipeline;
Vapor-water heat exchanger 5 is working medium and useless (dirt) water vapour heat exchanger.Working medium heat absorption evaporation, useless (dirt) water vapour exothermic condensation.The import of vapor-water heat exchanger 5 working medium to be exported with expansion pipe 4 by pipeline and is connected, sender property outlet is connected with diffuser pipe 6 import by pipeline, steam inlet is connected with useless (dirt) steam outlet of vaporizer 7, and solidifying water out is connected with heat exchanger 11 purified water inlet;
Expansion pipe 4 is working medium speedup dropping equipments.Expansion pipe 4 import to be exported with force (forcing) pump 3 by pipeline and is connected, and exports and is connected with the import of vapor-water heat exchanger 5 working medium by pipeline;
Heat exchanger 11 is pure water and useless (dirt) hydrothermal exchange device.Pure water exothermic temperature declines, and useless (dirt) water endothermic temperature rises.Useless (dirt) water inlet of heat exchanger 11 is connected with waste water pump 10 by pipeline, useless (dirt) water out is connected with auxiliary heater 12 import by pipeline, purified water inlet is coagulated water out by pipeline with vapor-water heat exchanger 5 and is connected, and pure water outlet is connected with pure water tank 13 import by pipeline;
Concentrated liquid bath 14 deposits useless (dirt) concentrated liquid container of discharging from vaporizer 7.Concentrated liquid bath 14 import is exported be connected by pipeline and vaporizer 7 (dirt) concentrated liquid that gives up, and exports and is connected with external process devices by pipeline;
The working medium container of discharging from vaporizer 7 deposited by lime set case 8.Lime set case 8 import to be exported with vaporizer 7 working fluid condenses liquid by pipeline and is connected, and exports and is connected with force (forcing) pump 3 import by pipeline;
Force (forcing) pump 3 provides power for working medium circulation.Force (forcing) pump 3 import to be exported with lime set case 8 by pipeline and is connected, and exports and is connected with expansion pipe 4 import by pipeline;
Pure water tank 13 deposits the pure water container of discharging from heat exchanger 11.Pure water tank 13 import to be exported with heat exchanger 11 pure water by pipeline and is connected, and exports and is connected with external process devices by pipeline;
Waste water pump 10 is that useless (dirt) water flow provides power.Waste water pump 10 import to be exported with wastewater disposal basin 9 by pipeline and is connected, and exports and is connected by pipeline and useless (dirt) water inlet of heat exchanger 11;
Wastewater disposal basin 9 is the containers depositing useless (dirt) water.Wastewater disposal basin 9 is exported and is connected with waste water pump 10 import by pipeline, and its import is connected with external device (ED).
A kind of evaporating liquid concentration treatment process, it comprises the following steps:
(1), force (forcing) pump 3 extracts the worker quality liquid in lime set case 8 and pressurizes to worker quality liquid;
(2) worker quality liquid, after pressurization is entered in vapor-water heat exchanger 5 by expansion pipe 4, then enters in vaporizer 7 by diffuser pipe 6; Sewage is by after heat exchanger 11 preheating simultaneously, enter in vaporizer 7 by auxiliary heater 12, in vaporizer 7, sewage and worker quality liquid carry out indirect heat exchange, sewage evaporates after absorbing worker quality liquid heat, water becomes steam and separates from sewage, sewage is concentrated, and worker quality liquid is entered in force (forcing) pump by lime set case 9 and enters next circulation;
(3) steam that, sewage generates in vaporizer 1 enters vapor-water heat exchanger 5 subsequently and carries out indirect heat exchange with worker quality liquid, heat is passed to worker quality liquid, pure water liquid is condensed into after releasing heat, complete sewage to be separated, to concentrate, pure water liquid enters in heat exchanger 11 and carries out heat exchange to sewage, realize the preheating of sewage, form the circle transmission of heat.
The task of duplex matter system is exactly from useless (dirt) water vapor absorption heat, and then these heats is passed to useless (dirt) water again and make it evaporate, and completes the concentration of useless (dirt) water.According to heat conduction principle, in vapor-water heat exchanger, the temperature of worker quality liquid must lower than useless (dirt) steam temperature, and worker quality liquid could absorb heat from useless (dirt) water vapor.Spray expand tube is adopted to expand to worker quality liquid, useless (dirt) steam temperature is reduced at temperature after worker quality liquid expands in spray expand tube, then enter vapor-water heat exchanger and carry out indirect heat exchange with useless (dirt) water vapor, absorb useless (dirt) water vapor heat of vaporization, its rapid spatial expansion, flow velocity increase sharply, and then enter diffuser pipe.Worker quality liquid its flow velocity in diffuser pipe declines, pressure and temperature rise, when temperature enters vaporizer higher than during temperature of saturation under useless (dirt) water evaporating pressure.In vaporizer, worker quality liquid indirect heating is given up (dirt) water, is condensed into liquid after releasing heat.Then pressurize to liquid working substance liquid, the rear worker quality liquid of pressurization enters expansion pipe again and expands.So far, worker quality liquid completes a closed circulation.
The task of useless (dirt) evaporative cooling system is that (dirt) water absorption heat that makes to give up evaporates, and then steam is carried out cooling becomes pure water, completes the separation of useless (dirt) water.Useless (dirt) evaporation of water has mainly come by vaporizer, in vaporizer, useless (dirt) water and worker quality liquid carry out indirect heat exchange, evaporate after absorbing worker quality liquid heat, water is just separated from useless (dirt) water, and useless (dirt) water is concentrated.Then discharge concentrated useless (dirt) water, water vapor then enters vapor-water heat exchanger and cools.In vapor-water heat exchanger, the water vapor separated from useless (dirt) water still carries out indirect heat exchange with worker quality liquid, and heat is passed to worker quality liquid, condenses into liquid after releasing heat, so far, complete useless (dirt) water to be separated, to concentrate main process.
Heat required for above-mentioned useless (dirt) water evaporation is mainly taken from useless (dirt) water itself.Useless (dirt) water evaporates under pressure, steam after evaporation transfers heat to cycle fluid liquid by vapor-water heat exchanger, then cycle fluid liquid transfers heat to useless (dirt) water again by vaporizer, evaporate again after useless (dirt) water absorbs heat, complete the transmission circulation of heat.Because useless (dirt) water concentration device has calorific loss in operational process, therefore, be provided with auxiliary heater in the present invention, system is heated, can the heat of replenish loss.
The principle of work of evaporating liquid concentration treatment unit of the present invention and treatment process is described below more with reference to the accompanying drawings:
1. duplex matter system:
First force (forcing) pump 3 extracts the worker quality liquid in lime set case 8 and pressurizes to it, improves the pressure of worker quality liquid.Worker quality liquid after boosting enters expansion pipe 4, and in expansion pipe 4, worker quality liquid expands.Along with worker quality liquid flow velocity is accelerated gradually, kinetic energy constantly increases, and pressure and temperature constantly decline, and then enters vapor-water heat exchanger 5.In vapor-water heat exchanger 5, worker quality liquid carries out indirect heat exchange with useless (dirt) water vapor, and absorb useless (dirt) water vapor heat of vaporization, its rapid spatial expansion, flow velocity increases sharply, and then enters diffuser pipe 6.In diffuser pipe 6, compress working substance steam, the decline of its flow velocity, pressure and temperature rise, and then working substance steam enters vaporizer 7.In vaporizer 7, working substance steam indirect heating is given up (dirt) water, and self is condensed into liquid after releasing heat, and then worker quality liquid enters lime set case 8.Last worker quality liquid enters force (forcing) pump 3, and force (forcing) pump 3 pairs of worker quality liquids pressurize again.So far, worker quality liquid completes a closed circulation process;
2. useless (dirt) evaporative cooling system:
First useless (dirt) water enter wastewater disposal basin 9, and then waste water pump 10 extracts useless (dirt) water in wastewater disposal basin 9, and (dirt) water that will give up sends into heat exchanger 11 preheating.In heat exchanger 11, useless (dirt) water carries out heat exchange with the pure water of coming from vapor-water heat exchanger 5, and useless (dirt) water endothermic temperature rises.Useless (dirt) water after preheating enters auxiliary heater 12 and heats, and temperature rises further, then enters vaporizer 7.In vaporizer 7, useless (dirt) water and working substance steam carry out indirect heat exchange, evaporate after useless (dirt) water absorbs working substance steam heat, water in useless (dirt) water becomes steam and separates from useless (dirt) water, and useless (dirt) water is concentrated.The steam generated in the evaporator 7 enters vapor-water heat exchanger 5 subsequently, and carry out indirect heat exchange with worker quality liquid, heat is passed to worker quality liquid, self is condensed into water of condensation.Then water of condensation enters heat exchanger 11, carries out indirect heat exchange with useless (dirt) water, releases thermal temperature and declines, enter thereafter pure water tank 13, finally discharge or be further processed.
Useless (dirt) water be concentrated in the evaporator 7, enters concentrated liquid bath 14, then sends and be further processed.
The invention has the beneficial effects as follows:
(1), the present invention uses clean worker quality liquid alone cycle, improves equipment operating efficiency, extension device work-ing life;
(2), useless (dirt) hydro-thermal amount can be made full use of, realize the circle transmission of heat simultaneously, reduce external heat input, save energy consumption.
Range of application of the present invention is very wide, not only in useless (dirt) use waterborne, also can carry out purifying, concentrating on other solution.Such as sea water desaltination, cow's milk concentrate.
Claims (4)
1. an evaporating liquid concentration treatment system, it comprises duplex matter system and waste water vaporization system, described duplex matter system comprises by force (forcing) pump, described force (forcing) pump connects vapor-water heat exchanger by expansion pipe, described vapor-water heat exchanger connects diffuser pipe, described diffuser pipe connects lime set case by vaporizer, described lime set case connects described force (forcing) pump and forms circulation, described waste water vaporization system comprises wastewater disposal basin, waste water pump connects described wastewater disposal basin, described vaporizer connects heat exchanger, described heat exchanger connects described waste water pump, described vapor-water heat exchanger connects described vaporizer, described vapor-water heat exchanger connects pure water tank by described heat exchanger, concentrated liquid bath connects described vaporizer.
2. a kind of evaporating liquid concentration treatment system according to claim 1, is characterized in that: described vaporizer connects described heat exchanger by auxiliary heater.
3. an evaporating liquid concentration treatment process, is characterized in that: it comprises the following steps:
(1), force (forcing) pump extracts the worker quality liquid in lime set case and pressurizes to worker quality liquid;
(2) worker quality liquid, after pressurization is entered in vapor-water heat exchanger by expansion pipe, then enters in vaporizer by diffuser pipe; Sewage is by after heat exchanger preheating simultaneously, enter in vaporizer, in vaporizer, sewage and worker quality liquid carry out indirect heat exchange, sewage evaporates after absorbing worker quality liquid heat, water becomes steam and separates from sewage, sewage is concentrated, and worker quality liquid is entered in press pump by lime set case and enters next circulation;
(3) steam that, sewage generates in vaporizer enters vapor-water heat exchanger subsequently, indirect heat exchange is carried out with worker quality liquid, heat is passed to worker quality liquid, pure water liquid is condensed into after releasing heat, complete sewage to be separated, to concentrate, pure water liquid enters in heat exchanger and carries out heat exchange to sewage, realizes the preheating of sewage, forms the circle transmission of heat.
4. a kind of evaporating liquid concentration treatment process according to claim 3, is characterized in that: in step (2), and sewage, by after heat exchanger preheating, is entered in vaporizer after being heated by auxiliary heater.
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| CN105439222A (en) * | 2015-11-23 | 2016-03-30 | 江苏润海能源科技有限公司 | Heat exchange mechanism used for sea water desalination system |
| CN105523597A (en) * | 2015-12-11 | 2016-04-27 | 上海朴是环境科技有限公司 | Efficient liquid medium thermal compression evaporation purification system |
| CN105776377A (en) * | 2016-04-14 | 2016-07-20 | 上海理工大学 | Industrial liquid hazardous waste treatment system |
| CN110372055A (en) * | 2019-08-23 | 2019-10-25 | 庄卫敏 | A kind of weary vapor recompression low-temperature evaporation wastewater zero discharge system and technique |
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| CN105439222A (en) * | 2015-11-23 | 2016-03-30 | 江苏润海能源科技有限公司 | Heat exchange mechanism used for sea water desalination system |
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| CN110372055A (en) * | 2019-08-23 | 2019-10-25 | 庄卫敏 | A kind of weary vapor recompression low-temperature evaporation wastewater zero discharge system and technique |
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Application publication date: 20151007 |