CN110217843A - A kind of automatic waste water three-effect evaporation and condensation system - Google Patents

A kind of automatic waste water three-effect evaporation and condensation system Download PDF

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Publication number
CN110217843A
CN110217843A CN201910596766.3A CN201910596766A CN110217843A CN 110217843 A CN110217843 A CN 110217843A CN 201910596766 A CN201910596766 A CN 201910596766A CN 110217843 A CN110217843 A CN 110217843A
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China
Prior art keywords
evaporator
level
effect
heat exchanger
gas
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Chinese (zh)
Inventor
刘国强
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Changzhou Jiaqiang Evaporator Co Ltd
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Changzhou Jiaqiang Evaporator Co Ltd
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Priority to CN201910596766.3A priority Critical patent/CN110217843A/en
Publication of CN110217843A publication Critical patent/CN110217843A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0082Regulation; Control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0094Evaporating with forced circulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/26Multiple-effect evaporating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/30Accessories for evaporators ; Constructional details thereof
    • B01D1/305Demister (vapour-liquid separation)
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/043Details
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/005Processes using a programmable logic controller [PLC]
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/02Temperature
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/03Pressure
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/42Liquid level
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/06Pressure conditions
    • C02F2301/063Underpressure, vacuum
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

The present invention relates to a kind of automatic waste water three-effect evaporation and condensation systems, it includes the water inlet system being sequentially connected, vapo(u)rization system, condenser system, vacuum system and cooling system, if vapo(u)rization system includes the identical evaporator of stem structure, and each evaporator is respectively 1st effective evaporator according to positional relationship, 2nd effect evaporator and triple effect evaporator, each evaporator includes heat exchanger and gas-liquid separator, level-one level sensor is provided on gas-liquid separator in 1st effective evaporator, in 1st effective evaporator, primary cycle pump is provided between the discharge end of its gas-liquid separator and the feed end of heat exchanger, two effect inlet valves are provided between primary cycle pump and the feed end of 1st effective evaporator heat exchanger, two effect inlet valves are connect with the heat exchanger feed end in 2nd effect evaporator, primary cycle pump and two effect inlet valves are electrically connected with PLC controller, PL C controller is electrically connected with level-one level sensor.The present invention has the effect of improving automatic controlling level to realize energy consumption reduction.

Description

A kind of automatic waste water three-effect evaporation and condensation system
Technical field
The present invention relates to waste water vapo(u)rization systems, more particularly, to a kind of automatic waste water three-effect evaporation and condensation system.
Background technique
Currently, durings the acquisition of chemical petroleum and natural gas processing etc., or in daily domestic sewage process In, it is easy to produce a large amount of high-salt wastewater, high-salt wastewater refers to that total salinity is at least up to 1% waste water, contains in this kind of waste water The substances such as more salt and organic matter, general physical filtering method are difficult to effectively handle this kind of waste water, if Direct emission is then very easy to pollute the environment.
In the prior art, notification number is that the Chinese invention patent of CN108862438A discloses a kind of multiple-effect of brine waste Evaporation concentration system, including vapour compression machine, multiple evaporators set gradually, each evaporator is equipped with inlet, goes out liquid Mouth, vapor inlet port and gas outlet;The vapor inlet port of foremost evaporator is connected to the outlet of vapour compression machine by pipeline, Backmost the gas outlet on evaporator is connected to the suction inlet of vapour compression machine by pipeline and is connected to closed water pot by condenser, Closed water pot is led in the connection of one vacuum pump, and the suction inlet of vapour compression machine is also connected to external jet chimney;Between adjacent vaporizers, after Liquid outlet on the evaporator of face is connected to the inlet on the evaporator of front by pipeline;Gas outlet on the evaporator of front passes through pipe Road is connected to the vapor inlet port on evaporator below;The material wastewater inlet pipe connection backmost inlet on evaporator, most before Liquid outlet on the evaporator of face is connected to material wastewater inlet pipe and is bypassed by pipeline concentrated water outlet pipe.Energy-saving effect of the present invention Obviously, low energy consumption.
Above-mentioned prior art has the following deficiencies: in actual use, the multiple-effect evaporation of this kind of brine waste Although concentration systems can achieve preferable waste water and be concentrated by evaporation effect, but it lacks effective automation control scheme, give up The flowing of water relies primarily on experience the fixed valve opening and closing time is arranged and realizes, causing can not in entire wastewater treatment process There is the waste of the energy with avoiding, improves whole operating cost.
Summary of the invention
The object of the present invention is to provide a kind of automatic waste water three-effect evaporation and condensation systems, have and improve automation control journey Degree is to realize the advantages of energy consumption reduces.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of automatic waste water three-effect evaporation and condensation system, including be sequentially connected water inlet system, vapo(u)rization system, condenser system, Vacuum system and cooling system, if the vapo(u)rization system includes the identical evaporator of stem structure, and each evaporator is according to position The relationship of setting is respectively 1st effective evaporator, 2nd effect evaporator and triple effect evaporator, and each evaporator includes heat exchanger and gas-liquid Separator, waste water enter in gas-liquid separator from by water inlet system, and subsequent waste water is transported in heat exchanger and in heat exchanger Interior evaporation and concentration, the waste water after concentration flow into gas-liquid separator, and generated secondary steam is logical in the gas-liquid separator Piping is transported into next stage evaporator, and the induction of level-one liquid level is provided on the gas-liquid separator in the 1st effective evaporator Device in the 1st effective evaporator, is provided with primary cycle pump between the discharge end of gas-liquid separator and the feed end of heat exchanger, Two effect inlet valves, the two effects charging are provided between the primary cycle pump and the feed end of the 1st effective evaporator heat exchanger Valve is connect with the heat exchanger feed end in 2nd effect evaporator, and the primary cycle pump and two effect inlet valves are electrically connected with PLC control Device processed, the PLC controller are electrically connected with level-one level sensor.
By using above-mentioned technical proposal, before this kind of automatic waste water three-effect evaporation and condensation system starts, first need by Condenser system, vacuum system and cooling system in the system fully open, wherein condenser system was for realizing being concentrated by evaporation The collection and recycling of condensed water in journey, for realizing the circulating cooling of each equipment, vacuum system is used for cooling system The internal low-voltage state of each equipment is in realization system to reduce evaporation required temperature, and reduces the waste liquid in evaporating concentration process and let out Leakage.Staff is ensuring that condenser system, vacuum system and cooling system fully open and after normal operating, and opening is preset The PLC controller of good parameter makes whole system enter automatic operating state.Waste water to be processed is entered by water inlet system It is concentrated by evaporation into heat exchanger, heat exchanger is communicated with the vapour compression machine for supplying steam, and waste water to be processed enters It into the gas-liquid separator of 1st effective evaporator, and is entered in heat exchanger by primary cycle pump and is evaporated concentration, with laggard Enter into the gas-liquid separator of 1st effective evaporator, level-one level sensor can incude the fluid level in gas-liquid separator.
In actual evaporating concentration process, the wastewater flow rate that single evaporator is handled within the unit time is efficient there are one Section is handled, two limiting values in the efficient process section are respectively highest liquid level and minimum liquid level, highest liquid level and minimum liquid The specific value parameter of position is adjusted according to the actual situation by staff.When the wastewater flow rate in single evaporator is lower than minimum liquid level When, the wastewater flow rate that single evaporator can be handled is far longer than actual waste water amount, is easy to cause energy waste, and energy consumption improves;When When wastewater flow rate in single evaporator is higher than highest liquid level, the wastewater flow rate that single evaporator can be handled is lower than actual waste water amount, It is easy to cause wastewater treatment incomplete, so that set processing requirement is not achieved in final water treatment effect.Therefore useless During water evaporation is concentrated, if the wastewater flow rate in each evaporator can reach dynamic equilibrium in efficient process section, it can make The evaporating concentration process for obtaining waste water reaches the balance between energy consumption level and wastewater treatment quality.
When the liquid level in 1st effective evaporator lower than highest liquid level and be higher than minimum liquid level when, PLC controller control into Water system, which operates normally and waste water is constantly flowed into heat exchanger, is evaporated compression.When the liquid level in 1st effective evaporator is high When degree is higher than highest liquid level, PLC controller control water inlet system closes and system is made to stop water inlet, meanwhile, PLC controller control Two effect inlet valves of system are opened, so that excessive waste water is entered in 2nd effect evaporator and handled in 1st effective evaporator.When an effect When liquid level in evaporator is lower than minimum liquid level, PLC controller control primary cycle pump stops working, so that waste water Stopping enters in heat exchanger, and the wastewater flow rate in gas-liquid separator in 1st effective evaporator is constantly accumulated, until it is higher than minimum Primary cycle pump is reopened when liquid level, restores to be concentrated by evaporation work.
The present invention is further arranged to, and the induction of second level liquid level is provided on the gas-liquid separator in the 2nd effect evaporator Device in the 2nd effect evaporator, is provided with secondary cycle pump between the discharge end of gas-liquid separator and the feed end of heat exchanger, Triple effect inlet valve, the triple effect inlet valve are provided between the feed end of heat exchanger in the secondary cycle pump and 2nd effect evaporator It is connect with the heat exchanger feed end in triple effect evaporator, the second level level sensor, secondary cycle pump and triple effect inlet valve are equal It is electrically connected with PLC controller.
By using above-mentioned technical proposal, the waste water handled by 1st effective evaporator enters to two effects from two effect inlet valves It is similar with 1st effective evaporator in the gas-liquid separator of evaporator, when the liquid level in second level level sensor is lower than highest liquid Position and be higher than minimum liquid level when, PLC controller control two effect inlet valves open and secondary cycle pump open simultaneously so that two effect steam Waste water evaporating concentration process in hair device is normally carried out.When the liquid level in second level level sensor is higher than highest liquid level, PLC controller controls triple effect inlet valve and opens, so that excessive waste water is entered in triple effect evaporator and carried out in 2nd effect evaporator Processing.When the liquid level in 2nd effect evaporator is lower than minimum liquid level, PLC controller control secondary cycle pump stops working, So that waste water, which stops entering in the heat exchanger of 2nd effect evaporator, is evaporated enriching service, the gas-liquid in 2nd effect evaporator Wastewater flow rate in separator is constantly accumulated, until it reopens secondary cycle pump when being higher than minimum liquid level, restores two effect evaporations The evaporation and concentration work of device.
The present invention is further arranged to, and the induction of three-level liquid level is provided on the gas-liquid separator in the triple effect evaporator Device in the triple effect evaporator, is provided with three-level circulating pump between the discharge end of gas-liquid separator and the feed end of heat exchanger, Discharging regulating valve, the three-level liquid level sense are provided in the three-level circulating pump and triple effect evaporator between the feed end of heat exchanger Device, three-level circulating pump and discharging regulating valve is answered to be electrically connected with PLC controller.
By using above-mentioned technical proposal, the waste water that handles by 1st effective evaporator and 2nd effect evaporator is from triple effect inlet valve In enter in the gas-liquid separator of triple effect evaporator, it is similar with 1st effective evaporator and 2nd effect evaporator, when three-level liquid level incude The liquid level that device detects lower than highest liquid level and be higher than minimum liquid level when, PLC controller control triple effect inlet valve open and Three-level circulating pump opens simultaneously, so that the Waste water concentrating evaporation process in triple effect evaporator is normally carried out.When three-level liquid level incudes When the liquid level that device detects is higher than highest liquid level, PLC controller control discharging regulating valve is opened, so that in triple effect evaporator Excessive waste water discharge.When the liquid level in triple effect evaporator is lower than minimum liquid level, PLC controller controls three-level circulating pump It stops working, so that waste water, which stops entering in the heat exchanger of triple effect evaporator, is evaporated enriching service, in triple effect evaporator Gas-liquid separator in wastewater flow rate constantly accumulate, until it reopens three-level circulating pump when being higher than minimum liquid level, restore three Imitate the evaporation and concentration work of evaporator.
The present invention is further arranged to, and is provided with sample tap between the three-level circulating pump and discharging regulating valve, described to take Sample mouth is connected with density sensing instrument, and the density sensing instrument is electrically connected with PLC controller, and the discharging regulating valve is along its discharging side To being connected with waste liquid thickener.
By using above-mentioned technical proposal, density sensing instrument can be carried out the wastewater sample recycled in triple effect evaporator The concentrating degree of Density Detection, waste water can directly be embodied from the autologous density of waste water, when density sensing instrument detect it is useless When the density of water reaches specified value, density sensing instrument sends signal to PLC controller and controls discharging regulating valve and opens.In reality In the operating process on border, density sensing instrument and three-level level sensor jointly control discharging regulating valve, wherein density passes Sense instrument control produces the opening and closing of material regulating valve, the uninterrupted of three-level level sensor control discharging regulating valve.Waste liquid thickener is adopted With the mode of rotary filter press, the solid-liquid substance in processed waste liquid is rapidly separated, and liquid and residue are discharged respectively.
The present invention is further arranged to, and is provided with first class pressure sensor on the heat exchanger in each evaporator, respectively Secondary pressure sensor, the first class pressure sensor and secondary pressure are provided on gas-liquid separator in the evaporator Sensor is electrically connected with PLC controller.
By using above-mentioned technical proposal, first class pressure sensor and secondary pressure sensor respectively to each evaporator inside Pressure monitored in real time, and pressure data signal real-time delivery is recorded to preservation into PLC controller, so that staff The real work situation of each evaporator can be understood at any time.
The present invention is further arranged to, and is provided with level-one temperature sensor on the heat exchanger in each evaporator, respectively Second level temperature sensor, the level-one temperature sensor and second level temperature are provided on gas-liquid separator in the evaporator Sensor is electrically connected with PLC controller, and the PLC controller is electrically connected with graph processing chips, the graph processing chips It is electrically connected with display screen.
By using above-mentioned technical proposal, level-one temperature sensor and second level temperature sensor respectively to each evaporator inside Temperature monitored in real time, and temperature data signal real-time delivery is recorded to preservation into PLC controller.Meanwhile PLC is controlled Device is connected with graph processing chips, and graph processing chips can be by each first class pressure sensor, secondary pressure sensor, level-one temperature Degree sensor and second level temperature sensor recorded data are depicted as the curve graph with association in time, and by image real-time delivery Shown on to display screen so that staff can real work situation to each evaporator carry out it is intuitive and immediately Monitoring, so as to quickly find the problem that system is in the evaporating concentration process to waste water, and adjusted in time It is whole, so that the operation that the systems stay is stable.
The present invention is further arranged to, and the condenser system includes condenser, on the heat exchanger in each evaporator Equipped with not condensing mouth, the not condensing mouth of each heat exchanger is connect with the fixed gas collection port on condenser, in each evaporator Heat exchanger on be provided with condensate outlet, the condensate outlet of each heat exchanger connects with the condensate liquid collection port on condenser It connects, the condensate liquid general export being connected to condensate liquid collection port is provided on the condenser, the condensate liquid general export is communicated with Condensate liquid collecting tank, the condensate liquid collecting tank are communicated with condensate pump.
By using above-mentioned technical proposal, during each evaporator operation, generated condensed water is unified collects to condensate liquid In collecting tank, the condensed water consolidated delivery in condensate liquid collecting tank can be carried out recycling benefit by condensate pump into other equipment With on the one hand can saving water resource, the leakproofness of internal system on the other hand can be improved.Each evaporator is in real work In the process, steam can not be fully utilized, the steam that can not be fully used is discharged and is being condensed from each fixed gas mouth It is converged in the fixed gas collection port of device, the steam that can not be fully used in each evaporator is concentrated within the condenser to be condensed and receive Collection.
The present invention is further arranged to, and the cooling system includes cooling tower and cooling water pump interconnected, described cold It is provided with cooling water outlet at the top of condenser, the cooling water outlet is connected to cooling tower, and the condenser bottom is provided with cooling Water inlet, the cooling water inlet are connected to cooling water pump.
By using above-mentioned technical proposal, cooling water pump continuously enters cooling water in condenser simultaneously from bottom to teeming It constantly recycles within the condenser, is the heating coolant liquid after heat exchange from the coolant liquid flowed out in cooling water outlet, it is cold after heating But liquid returns back to low-temperature condition in cooling tower and flows into from cooling water inlet again, so that when the condensation process in condenser is long Between be normally carried out.
The present invention is further arranged to, and the water inlet system includes sequentially connected wastewater disposal basin, feed pump and an effect charging Valve, ejected wash water adding mouth is provided on the pipeline being connected between the wastewater disposal basin and feed pump, and the feed pump and an effect are fed Primary contaminant filter is provided between valve.
By using above-mentioned technical proposal, the waste water in wastewater disposal basin does not pass through any processing, itself impurity compared with It is more, and its own concentration is possible to excessively high so that evaporator it is concentrated by evaporation it is ineffective.Ejected wash water adding mouth On the one hand the concentration of adjustable waste water is set, it is made to be more convenient for handling.Meanwhile staff can be at ejected wash water adding mouth Mixing addition adjuvant, so that some soluble impurities in waste water precipitate.Primary contaminant filter can in waste water not Soluble impurity carries out primary physical filtering, to effectively improve the wastewater treatment quality in subsequent process.
In conclusion the invention has the following advantages:
1. pass through the setting of level-one level sensor, second level level sensor, three-level level sensor and PLC controller, it can Raising system is played to run the degree of automation, reduce energy consumption and improve the effect for being concentrated by evaporation quality;
2. passing through the setting of density sensing instrument and waste liquid thickener, it can play and improve system automation operation degree and improve steaming The effect of hair concentration quality;
3. passing through the setting of graph processing chips and display screen, it can play and staff is enabled intuitively to recognize that each evaporator is real-time The effect of operating condition.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of automatic waste water multiple-effect evaporation concentration systems in an embodiment.
Fig. 2 is the enlarged diagram in the portion A in Fig. 1.
Fig. 3 is the enlarged diagram in the portion B in Fig. 1.
Fig. 4 is the enlarged diagram in the portion C in Fig. 1.
In figure, 1, water inlet system;11, wastewater disposal basin;12, feed pump;13, an effect inlet valve;14, ejected wash water adding mouth;15, Primary contaminant filter;2, vapo(u)rization system;21,1st effective evaporator;211, level-one level sensor;212, primary cycle pumps; 213, two effect inlet valve;22,2nd effect evaporator;221, second level level sensor;222, secondary cycle pumps;223, triple effect is fed Valve;23, triple effect evaporator;231, three-level level sensor;232, three-level circulating pump;233, discharge regulating valve;234, sample tap; 235, density sensing instrument;236, waste liquid thickener;3, condenser system;31, condenser;311, condensate liquid collection port;312, it condenses Liquid general export;313, cooling water outlet;314, cooling water inlet;32, condensate liquid collecting tank;33, condensate pump;4, vacuum system System;5, cooling system;51, cooling tower;52, cooling water pump;6, evaporator;61, heat exchanger;611, first class pressure sensor; 612, level-one temperature sensor;613, not condensing mouth;614, fixed gas collection port;615, condensate outlet;62, gas-liquid separation Device;621, secondary pressure sensor;622, second level temperature sensor;7, PLC controller;71, graph processing chips;72, it shows Screen.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Referring to Fig.1, be a kind of automatic waste water multiple-effect evaporation concentration systems disclosed by the invention, including be sequentially connected into Water system 1, vapo(u)rization system 2, condenser system 3, vacuum system 4 and cooling system 5.Wherein, vacuum system 4 is for realizing in system The internal low-voltage state of each equipment reduces the leakage of the waste liquid in evaporating concentration process to reduce evaporation required temperature.
It is introduced into vapo(u)rization system 2 with Fig. 4, water inlet system 1 for realizing by waste water to be processed referring to Fig.1.Water inlet system 1 Including sequentially connected wastewater disposal basin 11, feed pump 12 and an effect inlet valve 13, the pipe being connected between wastewater disposal basin 11 and feed pump 12 It is provided with ejected wash water adding mouth 14 on road, is provided with primary contaminant filter 15 between feed pump 12 and an effect inlet valve 13.It is useless Waste water in pond 11 does not pass through any processing, and the impurity of itself is more, and its own concentration is possible to excessively high, thus So that evaporator 6 it is concentrated by evaporation it is ineffective.The dense of the adjustable waste water of one side is arranged in ejected wash water adding mouth 14 Degree, makes it be more convenient for handling.Meanwhile staff can mix addition addition adjuvant at ejected wash water adding mouth 14, so that Some soluble impurities in waste water are precipitated.Primary contaminant filter 15 can carry out just the insoluble impurity in waste water The physical filtering of grade, to effectively improve the wastewater treatment quality in subsequent process.
Referring to Fig.1, condenser system 3 for realizing condensed water in evaporating concentration process collection and recycling.It is cold Solidifying system 3 includes condenser 31, and condensate liquid collection port 311, the condensation that vapo(u)rization system 2 generates when working are provided on condenser 31 Liquid, which is concentrated, to be flowed into condensate liquid collection port 311, and the condensate liquid being connected to condensate liquid collection port 311 is provided on condenser 31 and is always gone out Mouth 312, condensate liquid general export 312 is communicated with condensate liquid collecting tank 32, and condensate liquid collecting tank 32 is communicated with condensate pump 33.It is each to steam Send out the unified collection of generated condensed water extremely condensation in 31 course of work of generated condensed water and condenser in 6 course of work of device In liquid collecting tank 32, condensate pump 33 can be carried out the condensed water consolidated delivery in condensate liquid collecting tank 32 into other equipment It recycles.Each evaporator can not be fully utilized steam during real work, the steaming that can not be fully used Vapour can not be fully used in each evaporator from being discharged in each fixed gas mouth and converging in the fixed gas collection port of condenser Steam is concentrated within the condenser to be condensed and collects.
Referring to Fig.1, for cooling system 5 for realizing the circulating cooling of each equipment, cooling system 5 includes cooling interconnected Tower 51 and cooling water pump 52 are provided with the cooling water outlet 313 being connected to cooling tower 51,31 bottom of condenser at the top of condenser 31 It is provided with cooling water inlet 314, cooling water inlet 314 is connected to cooling water pump 52.Cooling water pump by cooling water continuously Enter in condenser from bottom to teeming and constantly recycle within the condenser, after being heat exchange from the coolant liquid flowed out in cooling water outlet Heat up coolant liquid, and the coolant liquid after heating returns back to low-temperature condition in cooling tower and flows into from cooling water inlet again, so that Condensation process in condenser is normally carried out for a long time.
Referring to Figures 1 and 2, if vapo(u)rization system 2 includes the identical evaporator 6 of stem structure, and each evaporator 6 is closed according to position System is respectively 1st effective evaporator 21,2nd effect evaporator 22 and triple effect evaporator 23, and each evaporator 6 includes heat exchanger 61 and gas-liquid Separator 62, waste water from being entered in gas-liquid separator 62 by water inlet system 1, subsequent waste water be transported in heat exchanger 61 and It is concentrated by evaporation in heat exchanger 61, the waste water after concentration flows into gas-liquid separator 62, generated two in gas-liquid separator 62 Secondary steam is by pipeline transportation into next stage evaporator 6.First class pressure biography is provided on heat exchanger 61 in each evaporator 6 Sensor 611 is provided with secondary pressure sensor 621, first class pressure sensor on the gas-liquid separator 62 in each evaporator 6 611 and secondary pressure sensor 621 be electrically connected with PLC controller 7.One is provided on heat exchanger 61 in each evaporator 6 Grade temperature sensor 612 is provided with second level temperature sensor 622, level-one temperature on the gas-liquid separator 62 in each evaporator 6 Sensor 612 and second level temperature sensor 622 are electrically connected with PLC controller 7, and PLC controller 7 is electrically connected with graphics process core Piece 71, graph processing chips 71 are electrically connected with display screen 72.
Referring to Figures 1 and 2, first class pressure sensor 611 and secondary pressure sensor 621 respectively to each evaporator 6 inside Pressure monitored in real time, and pressure data signal real-time delivery is recorded to preservation into PLC controller 7.Level-one temperature passes Sensor 612 and second level temperature sensor 622 respectively monitor the temperature inside each evaporator 6 in real time, and by temperature data Signal real-time delivery records preservation into PLC controller 7.Meanwhile PLC controller 7 is connected with graph processing chips 71, at figure Managing chip 71 can be by each first class pressure sensor 611, secondary pressure sensor 621, level-one temperature sensor 612 and second level temperature Degree 622 recorded data of sensor is depicted as the curve graph with association in time, and will be in image real-time delivery to display screen 72 It is shown, so that staff can carry out intuitive and instant monitoring to the real work situation of each evaporator 6, from And can quickly find the problem that system is in the evaporating concentration process to waste water, and be adjusted in time, to make Obtain the stable operation of the systems stay.
Referring to Figures 1 and 2, it is provided with level-one level sensor 211 on the gas-liquid separator 62 in 1st effective evaporator 21, one It imitates in evaporator 21, primary cycle pump 212 is provided between the discharge end of gas-liquid separator 62 and the feed end of heat exchanger 61, Two effect inlet valves 213, two effect inlet valves are provided between primary cycle pump 212 and the feed end of 21 heat exchanger 61 of 1st effective evaporator 213 connect with 61 feed end of heat exchanger in 2nd effect evaporator 22, and primary cycle pump 212 and two effect inlet valves 213 are electrically connected There is PLC controller 7, PLC controller 7 is electrically connected with level-one level sensor 211.
Referring to Fig.1, second level level sensor 221 is provided on the gas-liquid separator 62 in 2nd effect evaporator 22, two effects are steamed It sends out in device 22, secondary cycle pump 222, second level is provided between the discharge end of gas-liquid separator 62 and the feed end of heat exchanger 61 Triple effect inlet valve 223, triple effect inlet valve are provided in circulating pump 222 and 2nd effect evaporator 22 between the feed end of heat exchanger 61 223 connect with 61 feed end of heat exchanger in triple effect evaporator 23, second level level sensor 221, secondary cycle pump 222 and triple effect Inlet valve 223 is electrically connected with PLC controller 7.
Referring to Figure 1 and Figure 3, it is provided with three-level level sensor 231 on the gas-liquid separator 62 in triple effect evaporator 23, three It imitates in evaporator 23, is provided with three-level circulating pump 232 between the discharge end of gas-liquid separator 62 and the feed end of heat exchanger 61, Discharging regulating valve 233, three-level liquid level are provided in three-level circulating pump 232 and triple effect evaporator 23 between the feed end of heat exchanger 61 Inductor 231, three-level circulating pump 232 and discharging regulating valve 233 are electrically connected with PLC controller 7.Three-level circulating pump 232 and go out Be provided with sample tap 234 between material regulating valve 233, sample tap 234 is connected with density sensing instrument 235, density sensing instrument 235 with PLC controller 7 is electrically connected, and the regulating valve 233 that discharges is connected with waste liquid thickener 236 along its discharging direction.
The implementation principle of the present embodiment are as follows:
In actual evaporating concentration process, the wastewater flow rate that single evaporator 6 is handled within the unit time is efficiently located there are one Section is managed, two limiting values in the efficient process section are respectively highest liquid level and minimum liquid level, highest liquid level and minimum liquid level Specific value parameter adjusted according to the actual situation by staff.When the wastewater flow rate in single evaporator 6 is lower than minimum liquid level When, the wastewater flow rate that single evaporator 6 can be handled is far longer than actual waste water amount, is easy to cause energy waste, and energy consumption improves;When When wastewater flow rate in single evaporator 6 is higher than highest liquid level, the wastewater flow rate that single evaporator 6 can be handled is lower than actual waste water Amount, is easy to cause wastewater treatment incomplete, so that set processing requirement is not achieved in final water treatment effect.Therefore It, can if the wastewater flow rate in each evaporator 6 can reach dynamic equilibrium in efficient process section during waste water is concentrated by evaporation So that the evaporating concentration process of waste water reaches the balance between energy consumption level and wastewater treatment quality.
Before this kind of automatic waste water three-effect evaporation and condensation system starts, first need the condenser system 3, true in the system Empty set system 4 and cooling system 5 fully open.Staff is ensuring that condensed system, vacuum system 4 and cooling system 5 fully open And after normal operating, the PLC controller 7 for opening pre-set parameter makes whole system enter automatic operating state.To The waste water of processing is entered in heat exchanger 61 by water inlet system 1 and is concentrated by evaporation, and heat exchanger 61 is communicated with to be steamed for supplying The vapour compression machine of vapour, waste water to be processed enters in the gas-liquid separator 62 of 1st effective evaporator 21, and passes through primary cycle Pump 212, which enters in heat exchanger 61, is evaporated concentration, subsequently enters into the gas-liquid separator 62 of 1st effective evaporator 21, level-one Level sensor 211 can incude the fluid level in gas-liquid separator 62.When the liquid level in 1st effective evaporator 21 is lower than Highest liquid level and be higher than minimum liquid level when, PLC controller 7 control water inlet system 1 operate normally simultaneously waste water is constantly flowed into Compression is evaporated in heat exchanger 61.When the liquid level in 1st effective evaporator 21 is higher than highest liquid level, PLC controller 7 is controlled Water inlet system 1 processed closes and system is made to stop water inlet, meanwhile, two effect inlet valve 213 of the control of PLC controller 7 is opened, so that one Excessive waste water, which enters in 2nd effect evaporator 22, in effect evaporator 21 is handled.Liquid level in 1st effective evaporator 21 When lower than minimum liquid level, PLC controller 7 controls primary cycle pump 212 and stops working, so that waste water stopping enters heat exchange In device 61, the wastewater flow rate in gas-liquid separator 62 in 1st effective evaporator 21 is constantly accumulated, until weight when it is higher than minimum liquid level It is new to open primary cycle pump 212, restore to be concentrated by evaporation work.
The waste water handled by 1st effective evaporator 21 enters to the gas-liquid point of 2nd effect evaporator 22 from two effect inlet valves 213 It is similar with 1st effective evaporator 21 from device 62, when the liquid level in second level level sensor 221 lower than highest liquid level and is higher than When minimum liquid level, two effect inlet valve 213 of the control of PLC controller 7 is opened and secondary cycle pump 222 opens simultaneously, so that two effects are steamed Waste water evaporating concentration process in hair device 22 is normally carried out.When the liquid level in second level level sensor 221 is higher than highest liquid When position, PLC controller 7 controls triple effect inlet valve 223 and opens, so that excessive waste water enters to triple effect steaming in 2nd effect evaporator 22 It is handled in hair device 23.When the liquid level in 2nd effect evaporator 22 is lower than minimum liquid level, PLC controller 7 controls second level Circulating pump 222 stops working, so that waste water, which stops entering in the heat exchanger 61 of 2nd effect evaporator 22, is evaporated concentration It works, the wastewater flow rate in gas-liquid separator 62 in 2nd effect evaporator 22 is constantly accumulated, until when it is higher than minimum liquid level again Secondary cycle pump 222 is opened, the evaporation and concentration work of 2nd effect evaporator 22 is restored.
Triple effect is entered to from triple effect inlet valve 223 by the waste water that 1st effective evaporator 21 and 2nd effect evaporator 22 are handled to steam It is similar with 1st effective evaporator 21 and 2nd effect evaporator 22 in the gas-liquid separator 62 for sending out device 23, when three-level level sensor 231 is examined The liquid level measured lower than highest liquid level and be higher than minimum liquid level when, PLC controller 7 control triple effect inlet valve 223 open and Three-level circulating pump 232 opens simultaneously, so that the Waste water concentrating evaporation process in triple effect evaporator 23 is normally carried out.When three-level liquid level When the liquid level that inductor 231 detects is higher than highest liquid level, the control discharging regulating valve 233 of PLC controller 7 is opened, so that Excessive waste water discharge in triple effect evaporator 23.When the liquid level in triple effect evaporator 23 is lower than minimum liquid level, PLC control Device 7 controls three-level circulating pump 232 and stops working, and is steamed so that waste water stops entering in the heat exchanger 61 of triple effect evaporator 23 Enriching service is sent out, the wastewater flow rate in gas-liquid separator 62 in triple effect evaporator 23 is constantly accumulated, until it is higher than minimum liquid level When reopen three-level circulating pump 232, restore the evaporation and concentration work of triple effect evaporator 23.Density sensing instrument 235 can to The wastewater sample recycled in triple effect evaporator 23 carries out Density Detection, and the concentrating degree of waste water can be straight from the autologous density of waste water It connects and embodies, when density sensing instrument 235 detects that the density of waste water reaches specified value, density sensing instrument 235 is controlled to PLC Device 7 processed sends signal and controls discharging regulating valve 233 and opens.In the actual operation process, density sensing instrument 235 and three-level liquid Position inductor 231 jointly controls discharging regulating valve 233, wherein the control discharging regulating valve 233 of density sensing instrument 235 Opening and closing, the uninterrupted of the control discharging regulating valve 233 of three-level level sensor 231.Waste liquid thickener 236 is using rotary filter press Solid-liquid substance in processed waste liquid is rapidly separated, and liquid and residue is discharged respectively by mode.
It should be noted that being also set up between minimum liquid level and highest liquid level in the actual operational process of the system There is target level.Minimum liquid level and highest liquid level are respectively the limit liquid level that system operates normally, if level-one level sensor 211, the liquid level where second level level sensor 221 and three-level level sensor 231 frequently sense in gas-liquid separator 62 reaches When to minimum liquid level or highest liquid level, it is be easy to cause the emergency stop of each equipment in system, so that system operation is not smooth, and is set Standby starting repeatedly is easier that energy consumption is caused to improve.Therefore target level is set, in the present embodiment, target level is for minimum liquid level and most The median of high liquid level imitates inlet valve 213, triple effect inlet valve 223, one by one effect inlet valve 13, two of the control of PLC controller 7 The opening and closing degree of grade circulating pump 212, secondary cycle pump 222 and three-level circulating pump 232, so that the liquid in gas-liquid separator 62 Position is maintained near target level.By taking 1st effective evaporator 621 as an example, when the liquid level in 1st effective evaporator 621 is lower than target Liquid level and be higher than minimum liquid level when, PLC controller 7 control one effect 13 flow of inlet valve increase and primary cycle pump 212 flow Reduce, so that the liquid level in 1st effective evaporator 621 increases.When the liquid level in 1st effective evaporator 621 be higher than target level and When lower than highest liquid level, the flow that PLC controller 7 controls primary cycle pump 212 increases and the flow of an effect feed pump 12 reduces, So that the liquid level in 1st effective evaporator 621 declines.The liquid level in 1st effective evaporator 621 in gas-liquid separator 62 is achieved in mesh Standard liquid position is implemented around dynamic equilibrium, and the liquid level adjustment process in 2nd effect evaporator 622 and triple effect evaporator 623 is similar to an effect Liquid level adjustment process in evaporator 621.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it It is interior.

Claims (9)

1. a kind of automatic waste water three-effect evaporation and condensation system, including the water inlet system (1), vapo(u)rization system (2), cold being sequentially connected Solidifying system (3), vacuum system (4) and cooling system (5), it is characterised in that: the vapo(u)rization system (2) is if include that stem structure is identical Evaporator (6), and each evaporator (6) is respectively 1st effective evaporator (21), 2nd effect evaporator (22) according to positional relationship With triple effect evaporator (23), each evaporator (6) include heat exchanger (61) and gas-liquid separator (62), waste water from by into Water system (1) is entered in heat exchanger (61) and is concentrated by evaporation in heat exchanger (61), and the waste water after concentration enters to gas-liquid point From in device (62), generated secondary steam passes through pipeline transportation to next stage evaporator (6) in the gas-liquid separator (62) In, it is characterised in that: level-one level sensor is provided on the gas-liquid separator (62) in the 1st effective evaporator (21) (211), it in the 1st effective evaporator (21), is set between the discharge end of gas-liquid separator (62) and the feed end of heat exchanger (61) It is equipped with primary cycle pump (212), the feed end of the primary cycle pump (212) and the 1st effective evaporator (21) heat exchanger (61) Between be provided with two effect inlet valves (213), the heat exchanger (61) in two effect inlet valve (213) and 2nd effect evaporator (22) into Expect end connection, the primary cycle pump (212) He Erxiao inlet valve (213) is electrically connected with PLC controller (7), the PLC control Device (7) processed is electrically connected with level-one level sensor (211).
2. a kind of automatic waste water three-effect evaporation and condensation system according to claim 1, it is characterised in that: two effect is steamed It is provided with second level level sensor (221) on gas-liquid separator (62) in hair device (22), in the 2nd effect evaporator (22), Secondary cycle pump (222), the second level are provided between the discharge end of gas-liquid separator (62) and the feed end of heat exchanger (61) It is provided with triple effect inlet valve (223) between the feed end of heat exchanger (61) in circulating pump (222) and 2nd effect evaporator (22), it is described Triple effect inlet valve (223) is connect with heat exchanger (61) feed end in triple effect evaporator (23), the second level level sensor (221), secondary cycle pump (222) and triple effect inlet valve (223) are electrically connected with PLC controller (7).
3. a kind of automatic waste water three-effect evaporation and condensation system according to claim 2, it is characterised in that: the triple effect steams It is provided with three-level level sensor (231) on gas-liquid separator (62) in hair device (23), in the triple effect evaporator (23), Three-level circulating pump (232), the three-level are provided between the discharge end of gas-liquid separator (62) and the feed end of heat exchanger (61) Discharging regulating valve (233) is provided in circulating pump (232) and triple effect evaporator (23) between the feed end of heat exchanger (61), it is described Three-level level sensor (231), three-level circulating pump (232) and discharging regulating valve (233) are electrically connected with PLC controller (7).
4. a kind of automatic waste water three-effect evaporation and condensation system according to claim 3, it is characterised in that: the three-level is followed It is provided with sample tap (234) between ring pump (232) and discharging regulating valve (233), the sample tap (234) is connected with density sensing Instrument (235), the density sensing instrument (235) are electrically connected with PLC controller (7), and the discharging regulating valve (233) is along its discharging side To being connected with waste liquid thickener (236).
5. a kind of automatic waste water three-effect evaporation and condensation system according to claim 4, it is characterised in that: each evaporation It is provided with first class pressure sensor (611) on heat exchanger (61) in device (6), the gas-liquid separation in each evaporator (6) It is provided on device (62) secondary pressure sensor (621), the first class pressure sensor (611) and secondary pressure sensor (621) it is electrically connected with PLC controller (7).
6. a kind of automatic waste water three-effect evaporation and condensation system according to claim 5, it is characterised in that: each evaporation It is provided with level-one temperature sensor (612) on heat exchanger (61) in device (6), the gas-liquid separation in each evaporator (6) It is provided on device (62) second level temperature sensor (622), the level-one temperature sensor (612) and second level temperature sensor (622) it is electrically connected with PLC controller (7), the PLC controller (7) is electrically connected with graph processing chips (71), the figure Processing chip (71) is electrically connected with display screen (72).
7. a kind of automatic waste water three-effect evaporation and condensation system according to claim 6, it is characterised in that: the condensed system System (3) includes condenser (31), is equipped with not condensing mouth (613) on the heat exchanger (61) in each evaporator (6), each to exchange heat The not condensing mouth (613) of device (61) is connect with the fixed gas collection port (614) on condenser (31), each evaporator (6) In heat exchanger (61) on be provided with condensate outlet (615), the condensate outlet (615) of each heat exchanger (61) with condensation Condensate liquid collection port (311) on device (31) connects, and is provided on the condenser (31) and is connected to condensate liquid collection port (311) Condensate liquid general export (312), the condensate liquid general export (312) is communicated with condensate liquid collecting tank (32), and the condensate liquid is received Collection tank (32) is communicated with condensate pump (33).
8. a kind of automatic waste water three-effect evaporation and condensation system according to claim 7, it is characterised in that: the cooling system System (5) includes cooling tower interconnected (51) and cooling water pump (52), is provided with cooling water at the top of the condenser (31) and goes out Mouthful (313), the cooling water outlet (313) are connected to cooling tower (51), condenser (31) bottom be provided with cooling water into Mouth (314), the cooling water inlet (314) are connected to cooling water pump (52).
9. a kind of automatic waste water three-effect evaporation and condensation system according to claim 8, it is characterised in that: the water inlet system System (1) includes sequentially connected wastewater disposal basin (11), feed pump (12) He Yixiao inlet valve (13), the wastewater disposal basin (11) and charging Pump (12) between be connected pipeline on be provided with ejected wash water adding mouth (14), the feed pump (12) with one effect inlet valve (13) it Between be provided with primary contaminant filter (15).
CN201910596766.3A 2019-07-02 2019-07-02 A kind of automatic waste water three-effect evaporation and condensation system Pending CN110217843A (en)

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CN110941300A (en) * 2019-12-23 2020-03-31 无锡市蓝天水处理设备有限公司 Automatic control system and control method for integrated evaporator
CN112755559A (en) * 2020-12-24 2021-05-07 阮氏化工(常熟)有限公司 Full-automatic triple-effect evaporation system and method for producing sodium chloride through triple-effect evaporation
CN112939126A (en) * 2021-01-19 2021-06-11 广州晟启能源设备有限公司 Concentration treatment method

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CN205412285U (en) * 2015-12-24 2016-08-03 江苏瑞升华能源科技有限公司 Sodium chloride evaporation of water crystallization equipment control system that gives up
CN205773844U (en) * 2016-05-17 2016-12-07 常州泰特环境设备工程有限公司 A kind of high-salt wastewater triple effect evaporation crystallization apparatus without cooling down water

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CN110941300A (en) * 2019-12-23 2020-03-31 无锡市蓝天水处理设备有限公司 Automatic control system and control method for integrated evaporator
CN112755559A (en) * 2020-12-24 2021-05-07 阮氏化工(常熟)有限公司 Full-automatic triple-effect evaporation system and method for producing sodium chloride through triple-effect evaporation
CN112939126A (en) * 2021-01-19 2021-06-11 广州晟启能源设备有限公司 Concentration treatment method

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