CN205710266U - Electroplating waste processing equipment - Google Patents
Electroplating waste processing equipment Download PDFInfo
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- CN205710266U CN205710266U CN201620607105.8U CN201620607105U CN205710266U CN 205710266 U CN205710266 U CN 205710266U CN 201620607105 U CN201620607105 U CN 201620607105U CN 205710266 U CN205710266 U CN 205710266U
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- 238000009713 electroplating Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 title claims abstract description 28
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- 230000000694 effects Effects 0.000 claims abstract description 282
- 239000011552 falling film Substances 0.000 claims abstract description 190
- 238000001704 evaporation Methods 0.000 claims abstract description 160
- 230000008020 evaporation Effects 0.000 claims abstract description 148
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000010408 film Substances 0.000 claims abstract description 18
- 238000012546 transfer Methods 0.000 claims description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
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- 229910001385 heavy metal Inorganic materials 0.000 description 8
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- 238000000926 separation method Methods 0.000 description 7
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- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
This utility model relates to technical field of waste water processing, particularly relate to a kind of electroplating waste processing equipment, a kind of electroplating waste processing equipment, including passing sequentially through the first head tank of pipeline connection, preheating device, an effect evaporation element, two effect evaporation element and forced-circulation evaporation unit, electroplating waste processing equipment of the present utility model and processing method thereof, it is made up of 2 effect falling film evaporations and forced-circulation evaporation three part, evaporation uses two advanced effect MVR falling liquid film techniques, carry out forced circulation again, more more energy efficient than common evaporation technology, more more stable than common evaporation technology.
Description
Technical field
This utility model relates to technical field of waste water processing, particularly relates to a kind of electroplating waste processing equipment.
Background technology
Electroplating wastewater complicated component, ordinary circumstance acidity is relatively strong, and major pollutants are Zn2+, Cu2+, Ni2+, Cr6+, Cd2
+ etc. heavy metal ion, acid, alkali, salt and cyanide etc..19 kinds of materials of environment are polluted in national regulation inspection, in electroplating wastewater just
Having 14 kinds, environmental pollution is extremely serious.Electroplating wastewater toxicity is very big, and some is also containing carcinogenic, teratogenesis, mutagenic violent in toxicity
Matter, very harmful to the mankind.Containing a large amount of precious metals in electroplating wastewater, if not recycling the waste also resulting in resource.I
Electroplate Factory of state more than 10,000, annual waste discharge amount about 4,000,000,000 cubes.
Using chemical deposition method to process electroplating wastewater, after chemical settling, heavy metal is remaining, produces a large amount of mud, and heavy metal contains
Amount is 1% 1.5%, can only do hazardous waste and process, and non-recovery is worth；Resin is oxidizable, and resin regeneration causes secondary pollution；
Film easily blocks, and operating cost is high, and film concentrated phase is difficult；Resin and film properties decline, and easily cause discharge beyond standards；Water outlet is difficult to back
With, operation complexity, operator are required height.
Utility model content
The technical problems to be solved in the utility model is: in order to solve to use chemical deposition method to process plating in prior art
Waste water, sewage sludge waste slag is many, and non-recovery is worth, it is impossible to ensureing that water outlet is the most qualified, processing cost is high, and the technology of operation complexity is asked
Topic, this utility model provides a kind of electroplating waste processing equipment.
This utility model solves its technical problem and be the technical scheme is that a kind of electroplating waste processing equipment, including
Pass sequentially through the first head tank of pipeline connection, preheating device, an effect evaporation element, two effect evaporation element and forced-circulation evaporations
Unit,
One effect evaporation element includes an effect Falling film heat transfer device, effect falling film evaporation room and first condensate drum, two effect evaporations
Unit includes two effect Falling film heat transfer devices, two effect falling film evaporation room and the second condensate drums, and forced-circulation evaporation unit includes triple effect
Forced-circulation evaporation room, the first three-effect heat exchanger, the second three-effect heat exchanger, stirred tank and centrifuge (centrifuge be so that
Concentrated solution separates with solid, it is also possible to be that other have the equipment of this function),
The upper tube box of one effect Falling film heat transfer device is connected with preheating device, the lower tube box of an effect Falling film heat transfer device and an effect fall
Film vaporization chamber is connected, and the lower tube box of an effect Falling film heat transfer device is also connected with two lower tube box imitating Falling film heat transfer devices, an effect fall
The lower tube box of film heat exchanger is also connected by exterior line with a upper tube box imitating Falling film heat transfer device, an effect falling film evaporation room
Upper end is connected with two effect Falling film heat transfer devices, the lower end of an effect falling film evaporation room and an exterior tube imitating Falling film heat transfer device lower tube box
Road is connected, and an effect Falling film heat transfer device is provided with the condensation-water drain being connected with the first condensate drum, an effect falling film evaporation
It is provided with the vapor phase equilibrium mouth being connected with the first condensate drum, the first condensate drum and the second condensate drum on room to be connected,
Second condensate drum connects total condensate water pot,
The upper tube box of described two effect Falling film heat transfer device lower tube box and two effect Falling film heat transfer devices is connected, two effect Falling film heat transfer devices
Lower tube box and two effect falling film evaporation rooms be connected, two effect falling film evaporation rooms lower ends be connected with triple effect forced-circulation evaporation room
Logical, the bottom of two effect falling film evaporation rooms is connected with the pipeline of the lower tube box of two effect Falling film heat transfer devices, on two effect Falling film heat transfer devices
It is provided with the condensation-water drain being connected with the second condensate drum, two effect falling film evaporation rooms are provided with and the second condensate drum phase
The vapor phase equilibrium mouth of connection,
The lower tube box of triple effect forced-circulation evaporation room and the upper end of the first three-effect heat exchanger are connected, the first three-effect heat exchanger
Lower tube box and the lower tube box of the second three-effect heat exchanger be connected, the upper tube box of the second three-effect heat exchanger steams with triple effect forced circulation
The lower tube box sending out room is connected, and the bottom of triple effect forced-circulation evaporation room is connected with stirred tank upper port, the bottom of stirred tank
Being connected with centrifuge, the liquid outlet of centrifuge connects has mother liquor tank, mother liquor tank to be connected with triple effect forced-circulation evaporation room,
Shell side (i.e. housing) lower end of the first three-effect heat exchanger and the second three-effect heat exchanger is provided with and is connected with the first condensate drum
Vapor phase equilibrium mouth,
Electroplating waste processing equipment also includes vapour compression machine, and vapour compression machine connects external Boiler Steam, the one or three
Effect heat exchanger, the steam inlet of the second three-effect heat exchanger are connected with vapour compression machine, the steam of two effect upper ends, falling film evaporation room
The steam (vapor) outlet on outlet and top, triple effect forced-circulation evaporation room is connected with vapour compression machine, on an effect Falling film heat transfer device
Steam inlet is connected with vapour compression machine,
It is provided with the first pressure filter, mother liquor tank and triple effect forced circulation on the pipeline of described two effect Falling film heat transfer device lower tube box
Pipeline between vaporization chamber is provided with the second pressure filter.
Described electroplating waste processing equipment also sets up at least one second head tank, and each second head tank respectively and preheats
Device is connected.When the raw material in the first head tank runs low, the raw material mixed up can be sent into preheating in the second head tank
Device.In order to improve work efficiency, the quantity of the second head tank can increase, and the first head tank and the second head tank have just started point
Regulating pH value, two used in parallel, the most first uses the raw material in the first head tank the most simultaneously, when in the first head tank, raw material is fast
When being finished, it is switched to the second head tank, the raw material that now in the first head tank, allotment is new, the using and the reserved, so ensure that dress
Put and do not stop to circulate work, improve work efficiency.
Described preheating device includes plate type preheater and the tubulation preheater being serially connected, the second head tank and board-like preheating
Device is connected, and tubulation preheater and an effect Falling film heat transfer device connect.The thermal source of plate type preheater is from generation in heating process
Condensed water (condensed water from the second condensate drum, namely the condensed fluid in the second condensate drum pump into total condensate water pot it
Before, condensed fluid first passes through plate type preheater heat exchange), the temperature needed can not be reached to material heating, therefore to fully add
Heat, is also provided with tubulation preheater, and the thermal source of tubulation preheater changes thermogenetic Low Temperature Steam from an effect falling film evaporator and (contains
Do not coagulate steam).
A described effect falling film evaporation room and two effect bottoms, falling film evaporation room are provided with vapour liquid separator.
In order to the material blowback that an effect Falling film heat transfer device lower tube box or two effect Falling film heat transfer device lower tube box are flowed out
One effect Falling film heat transfer device upper tube box or two effect Falling film heat transfer device upper tube box, the lower tube box of a described effect Falling film heat transfer device and an effect
Two one effect circulating pumps, the pipe of two effect Falling film heat transfer device lower tube box it is provided with on exterior line between Falling film heat transfer device upper tube box
Two two effect circulating pumps it are provided with on road.
Described tubulation preheater is also associated with condenser.
A kind of electroplating effluent treatment method, the electroplating waste processing equipment described in employing, comprise the steps:
1) PH: the material of regulation raw material is transported in the first head tank regulate PH from a upper workshop section；
2) preheating: material enters preheating device preheating after regulating PH；
3) an effect circulating and evaporating: the raw material after preheating enters an effect Falling film heat transfer device, external steam is to an effect Falling film heat transfer
Device provides thermal source, and after heat exchange, material produces evaporation in an effect Falling film heat transfer device, material be condensed into after concentrated solution with steam
Together entering the lower tube box of an effect Falling film heat transfer device, after vapor-liquid separation, steam and part are carried the steam of the concentrated solution spittle secretly and are entered
Entering an effect falling film evaporation room, a part of concentrated solution pumps into an effect from the lower tube box outlet of an effect Falling film heat transfer device through an effect circulating pump
The upper tube box of Falling film heat transfer device, continues cycling through, and another part concentrated solution enters two effect Falling film heat transfer device lower ends by pressure differential
On pipeline, after the steam in an effect falling film evaporation room is separated, concentrated solution changes with an effect falling liquid film from an effect lower end, falling film evaporation room
The partial concentration liquid of the lower tube box outlet of hot device converges, and steam enters two effect falls from the upper end of an effect falling film evaporation room as thermal source
Film heat exchanger, the condensed fluid of an effect Falling film heat transfer device enters in the first condensate drum, and the partial condensation liquid in the first drainer dodges
Entering an effect falling film evaporation room due to differential pressure action after steaming, remaining condensed fluid pumps into the second condensate drum, eventually through condensation
Water pump pumps into total condensate water pot；
4) two effect circulating and evaporating: the concentrated solution on the pipeline of two effect Falling film heat transfer device lower ends sends into two through two effect circulating pumps
In effect Falling film heat transfer device, an effect falling film evaporation room steam out enters two effect Falling film heat transfer devices as thermal source, after heat exchange,
Concentrated solution evaporates in two effect Falling film heat transfer devices, and after evaporation, the indirect steam of entrainment portions concentrated solution enters two effect falling film evaporations
Room, a part of concentrated solution pumps into pipe two effect Falling film heat transfer devices from the lower tube box outlet of two effect Falling film heat transfer devices through two effect circulating pumps
Case, continues cycling through, and another part concentrated solution pumps into triple effect forced-circulation evaporation room, two effect falling film evaporation rooms by two effect circulating pumps
In steam separated after, concentrated solution from two effect lower ends, falling film evaporation room with two effect Falling film heat transfer devices lower tube box outlet parts
Concentrated solution converges, and the steam upper tube box from two effect falling film evaporation rooms enters vapour compression machine, and vapour compression machine changes to the first triple effect
Hot device, the second three-effect heat exchanger and an effect Falling film heat transfer device provide thermal source, the condensed fluid of two effect Falling film heat transfer devices to enter second
In condensate drum, after the partial condensation liquid flash distillation in the second drainer, enter two effect falling film evaporation rooms due to differential pressure action, remaining
Condensed fluid pump into total condensate water pot by condensate pump；
5) triple effect cycle evaporation: pump into the concentrated solution of triple effect forced-circulation evaporation room from two effect falling film evaporation rooms and be introduced into the
After two three-effect heat exchanger heat exchange, then pump into the bottom of the first three-effect heat exchanger from the bottom of the second three-effect heat exchanger, then from first
The upper end of three-effect heat exchanger enters triple effect forced-circulation evaporation room, then enters stirred tank from the bottom of triple effect forced-circulation evaporation room
Being stirred, carry out solid-liquid separation subsequently into centrifuge, solid unlap processes, and liquid enters mother liquor tank, in mother liquor tank
Liquid in the second pressure filter backs into triple effect forced-circulation evaporation room, top, triple effect forced-circulation evaporation room steam out with
Two effect upper end, falling film evaporation room steam out converge entrance vapour compression machine, vapour compression machine give the first three-effect heat exchanger, the
Two three-effect heat exchangers and an effect Falling film heat transfer device provide thermal source, the lower end vapour of the first three-effect heat exchanger and the second three-effect heat exchanger
The condensed water that the mouth that balances each other flows out enters the first condensate drum, then relies on pressure differential to enter the second condensate drum, then passes through pump
Pump into total condensate water pot.
In order to save the energy, after the material in an effect Falling film heat transfer device is warmed up to boiling point, external steam is closed.
The heavy metal in concentrated solution and salt is collected in the first pressure filter, the second pressure filter and centrifuge.
Step 1) in also include that the second head tank, the first head tank and the second head tank regulate pH value the most simultaneously, two
Used in parallel, the using and the reserved.
The beneficial effects of the utility model are, electroplating waste processing equipment of the present utility model and processing method thereof, by 2 effects
Falling film evaporation and forced-circulation evaporation three part composition, evaporation uses two advanced effect MVR falling liquid film techniques, then carries out pressure and follow
Ring, more more energy efficient than common evaporation technology, more more stable than common evaporation technology.
It addition, the water being evaporated is less than 200 containing a small amount of low-boiling-point substance, COD (COD), all indexs meet plating
Water circulation standard, retortable water 100% reuse, it is possible to achieve zero-emission, without discharging illegal risk；
Reclaiming high-load heavy metal and salt, tenor is more than 10%, is worth and approximates contained metal market value
50%；
Acceptable production cost, ton water evaporation cost is less than 30 yuan/ton；
Automation mechanized operation, effluent index on-line monitoring and record, operator are required low；
Low-temperature negative-pressure runs, and equipment is reliable and stable.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of this utility model optimum embodiment.
Fig. 2 is enlarged diagram at B in Fig. 1.
Fig. 3 is enlarged diagram at A in Fig. 1.
In figure: 1, the first head tank, the 2, second head tank, 3, feed pump, 41, one effect Falling film heat transfer device, 42, one effect falling liquid film
Vaporization chamber, the 43, first condensate drum, 44, one effect circulating pump, 51, two effect Falling film heat transfer devices, 52, two effect falling film evaporation rooms, 53,
Second condensate drum, 54, two effect circulating pumps, 61, triple effect forced-circulation evaporation room, the 62, first three-effect heat exchanger, the 63, the 2nd 3
Effect heat exchanger, 64, stirred tank, 65, centrifuge, 7, total condensate water pot, 81, plate type preheater, 82, tubulation preheater, 9, second
Pressure filter, the 10, first pressure filter, 11, vapour compression machine, 12, condenser, 13, mother liquor tank, 14, vacuum pump.
Detailed description of the invention
Presently in connection with accompanying drawing, this utility model is described in further detail.These accompanying drawings are the schematic diagram of simplification,
Basic structure of the present utility model is described the most in a schematic way, and therefore it only shows the composition relevant with this utility model.
As Figure 1-3, being this utility model optimum embodiment, a kind of electroplating waste processing equipment, including passing sequentially through
First head tank 1 of pipeline connection, preheating device, an effect evaporation element, two effect evaporation element and forced-circulation evaporation unit,
One effect evaporation element includes effect Falling film heat transfer device 41, effect falling film evaporation room 42 and the first condensate drum 43, two
Effect evaporation element includes two effect Falling film heat transfer device 51, two effect falling film evaporation room 52 and the second condensate drum 53, forced-circulation evaporations
Unit includes triple effect forced-circulation evaporation room the 61, first three-effect heat exchanger the 62, second three-effect heat exchanger 63, stirred tank 64, is centrifuged
Machine 65,
The upper tube box of one effect Falling film heat transfer device 41 is connected with preheating device, the lower tube box and of an effect Falling film heat transfer device 41
Effect falling film evaporation room 42 is connected, and the lower tube box of an effect Falling film heat transfer device 41 is also connected with two lower tube box imitating Falling film heat transfer devices 51
Logical, the lower tube box of an effect Falling film heat transfer device 41 is also connected by exterior line with a upper tube box imitating Falling film heat transfer device 41, and one
The upper end of effect falling film evaporation room 42 is connected with two effect Falling film heat transfer devices 51, the lower end of an effect falling film evaporation room 42 and an effect falling liquid film
Exterior line under heat exchanger 41 lower tube box is connected, and an effect Falling film heat transfer device 41 is provided with and is connected with the first condensate drum 43
Logical condensation-water drain, an effect falling film evaporation room 42 is provided with the vapor phase equilibrium mouth being connected with the first condensate drum 43, the
One condensate drum 43 is connected with the second condensate drum 53, and the second condensate drum 53 connects total condensate water pot 7,
The lower tube box of two effect Falling film heat transfer devices 51 and the upper tube box of two effect Falling film heat transfer devices 51 are connected, two effect Falling film heat transfers
The lower tube box of device 51 and two effect falling film evaporation rooms 52 are connected, and the lower tube box of two effect falling film evaporation rooms 52 steams with triple effect forced circulation
Sending out room 61 to be connected, the bottom of two effect falling film evaporation rooms 52 is connected with the pipeline of the lower tube box of two effect Falling film heat transfer devices 51, and two
It is provided with the condensation-water drain being connected with the second condensate drum 53 on effect Falling film heat transfer device 51, two effect falling film evaporation rooms 52 set
It is equipped with the vapor phase equilibrium mouth being connected with the second condensate drum 53,
Triple effect forced-circulation evaporation room 61 is connected with the upper end of the first three-effect heat exchanger 62, the first three-effect heat exchanger 62
The lower tube box of lower tube box and the second three-effect heat exchanger 63 is connected, the upper tube box of the second three-effect heat exchanger 63 and triple effect forced circulation
The lower tube box of vaporization chamber 61 is connected, and the bottom of triple effect forced-circulation evaporation room 61 is connected with stirred tank 64 upper port, stirring
The bottom of still 64 is connected with centrifuge 65, and the liquid outlet of centrifuge 65 connects mother liquor tank 13, and mother liquor tank 13 is strong with triple effect
Circulating and evaporating room 61 processed is connected, and the shell side lower end of the first three-effect heat exchanger 62 and the second three-effect heat exchanger 63 is provided with and the
The vapor phase equilibrium mouth that one condensate drum 43 is connected,
Electroplating waste processing equipment also includes vapour compression machine 11, and vapour compression machine 11 connects external Boiler Steam, the
The steam inlet of one three-effect heat exchanger the 62, second three-effect heat exchanger 63 is connected with the outlet of vapour compression machine 11, two effect falling liquid films
The steam (vapor) outlet of vaporization chamber 52 upper end and the steam (vapor) outlet on top, triple effect forced-circulation evaporation room 61 and vapour compression machine 11
Import is connected, and the steam inlet on an effect Falling film heat transfer device 41 is connected with the outlet of vapour compression machine 11,
Being provided with the first pressure filter 10 on the pipeline of the lower tube box of two effect Falling film heat transfer devices 51, mother liquor tank 13 is forced with triple effect
Pipeline between circulating and evaporating room 61 is provided with the second pressure filter 9.
Electroplating waste processing equipment is additionally provided with the second head tank 2, and the second head tank 2 is connected with preheating device.
Preheating device includes plate type preheater 81 and the tubulation preheater 82 being serially connected, and the second head tank 2 is pre-with board-like
Hot device 81 is connected, and tubulation preheater 82 is connected with an effect Falling film heat transfer device 41.
One effect falling film evaporation room 42 and two effect bottoms, falling film evaporation room 52 are provided with vapour liquid separator.
Arrange on exterior line between lower tube box and effect Falling film heat transfer device 41 upper port of one effect Falling film heat transfer device 41
There is an effect circulating pump 44, the pipeline of two effect Falling film heat transfer device 51 lower ends is provided with two effect circulating pumps 54.
Tubulation preheater 82 is also associated with condenser 12.
A kind of electroplating effluent treatment method, is summarized as follows:
Material solution temperature >=20 degree, front operation in after mixing up pH value, filter pressing pump delivers to the first head tank 1, by raw material pump
Enter plate type heat exchanger 81 after pressurization and be preheating to about 49 degree, be then heated to about 70 degree through tubulation preheater 82, enter back into an effect
In Falling film heat transfer device 41, the raw material in effect Falling film heat transfer device 41 pipe makes raw material explosive evaporation with pipe external heat steam heat-exchanging, steams
Send out produce steam entrainment portions drop enter one effect falling film evaporation room 42, separator the drop in steam from steam
It is separated off forming indirect steam.Indirect steam enters in two effect Falling film heat transfer device 51 housings, in two effect Falling film heat transfer devices 51 are managed
Raw material and shell steam heat-exchanging make raw material evaporation and water vapour condensation, the steam entrainment portions drop that evaporation produces enters two
Effect falling film evaporation room 52, separator is separated off the drop in steam to form indirect steam from steam, and indirect steam enters
Entering vapour compression machine 11, after steam is compressed, temperature and pressure raises, and the steam of higher temperature is as an effect Falling film heat transfer
Raw material heat exchange in the thermal source of device 41, with pipe, steam is released latent heat and is condensed into condensed water.Condensed water imitates Falling film heat transfer device one
Entering the first condensate drum 43 after collecting bottom the heat exchanger tube of 41, partial condensation water enters the second condensate drum by differential pressure step by step
53, enter total condensate water pot 7 after finally pumping into plate type preheater 81.After raw material in one effect Falling film heat transfer device 41 is concentrated, lean on
Pressure differential enters two effect Falling film heat transfer devices 51, is then pumped into triple effect forced-circulation evaporation room 61, concentrates feed liquid and enters the second filter pressing
Machine 9 separate (solid-liquid separation, admittedly be heavy metal and salt, stays in the second pressure filter 9, periodic cleaning, liquid be concentrated solution enter triple effect
Forced-circulation evaporation room 61), indirect steam enters vapour compression machine 11 supercharging together with two effect falling film evaporation room 52 indirect steams
After, partial boost steam enters triple effect forced-circulation evaporation room 61 shell heated material.
Not condensing cooler, vacuum pump 14, steam-water separator composition vacuum pump set, it is ensured that evaporator operation is in design pressure
Under, it is ensured that evaporating temperature is stable in the range of technological requirement.
Processing method in detail is as follows:
1) raw material (i.e. material) discharge is about 10m3/ h, salinity 5%, the raw material that temperature is 20 DEG C is transported to from operation
One head tank 1 regulates PH, then enters pressure filter by feed pump 3 pressurization, after filtration, pumped into plate type preheater 81 by pump, stream
Measure, after electromagnetic flowmeter measures, the signal of telecommunication is sent to the Flow-rate adjustment inlet valve aperture that PLC, PLC set according to operator
Speed makes inlet amount constant in setting value；
2) preheating: material sequentially enters plate type preheater 81 after regulating PH and tubulation preheater 82 preheats；
3) an effect circulating and evaporating: the raw material after preheating enters an effect Falling film heat transfer device 41, external steam changes to an effect falling liquid film
Hot device 41 provides thermal source, and after heat exchange, material produces evaporation in an effect Falling film heat transfer device 41, on an effect Falling film heat transfer device 41
Liquid distributor is installed in bobbin carriage, it is possible to being evenly distributed in by liquid on Falling film heat transfer inside pipe wall, material leans on from heat exchanger tube inwall
Gravity flows downward, and forms uniform liquid film.Liquid film evaporates under shell steam heat effect, indirect steam pair in the same direction
The shearing force of liquid film, as motive force, improves heat exchange efficiency, even if making liquid also can heat exchanger tube inwall flowing time is the shortest
Produce bigger evaporation capacity.Material together enters the lower tube box of an effect Falling film heat transfer device 41, warp with steam after being condensed into concentrated solution
After vapor-liquid separation, steam and part carry secretly the concentrated solution spittle steam enter one effect falling film evaporation room 42, a part of concentrated solution from
The lower tube box outlet of one effect Falling film heat transfer device 41 pumps into the upper tube box of an effect Falling film heat transfer device 41 through an effect circulating pump 44, continues to follow
Ring, another part concentrated solution enters on the pipeline of two effect Falling film heat transfer device 51 lower ends by pressure differential, an effect falling film evaporation room 42
In steam separated after, concentrated solution from one effect lower end, falling film evaporation room 42 with one effect Falling film heat transfer device 41 lower tube box outlet
Partial concentration liquid converges, and steam enters two effect Falling film heat transfer devices 51, an effect from the upper end of an effect falling film evaporation room 42 as thermal source
The condensed water that Falling film heat transfer device 41 shell side lower end is discharged enters the first condensate drum 43, pressured difference after its partial condensation liquid flash distillation
Effect enters an effect falling film evaporation room 42, and then remainder condensed fluid relies on pressure differential to enter the second condensate drum 53, then leads to
Cross pump and pump into total condensate water pot 7；
4) two effect circulating and evaporating: on the pipeline of (essentially identical with an effect circulating and evaporating) two effect Falling film heat transfer device 51 lower tube box
Concentrated solution through two effect circulating pumps 54 send in two effect Falling film heat transfer devices 51, one effect falling film evaporation room 42 steam conduct out
Thermal source enters two effect Falling film heat transfer devices 51, and after heat exchange, concentrated solution produces evaporation, concentrated solution in two effect Falling film heat transfer devices 51
Together enter the lower tube box of an effect Falling film heat transfer device 41 after being again condensed into concentrated solution with steam, after vapor-liquid separation, steam and
Part is carried the steam of the concentrated solution spittle secretly and is entered two effect falling film evaporation rooms 52, and a part of concentrated solution is from two effect Falling film heat transfer devices 51
Lower tube box outlet pumps into two effect Falling film heat transfer device 51 upper tube box through two effect circulating pumps 54, continues cycling through, and another part concentrated solution leads to
Cross two effect circulating pumps 54 and pump into triple effect forced-circulation evaporation room 61, after the steam in two effect falling film evaporation rooms 52 is separated, concentrate
The liquid partial concentration liquid from two effect lower ends, falling film evaporation room 52 with the lower tube box outlet of two effect Falling film heat transfer devices 51 converges, through two effects
Circulating pump 54 pumps into the first pressure filter 10, carry out filter solid-liquid separation (admittedly be heavy metal and salt, stay in the first pressure filter 10,
Periodic cleaning, liquid is that concentrated solution is partly into triple effect forced-circulation evaporation room 61, is partly into two effect Falling film heat transfer devices 51
Upper end continue cycling through), steam enters vapour compression machines 11 from the upper ends of two effect falling film evaporation rooms 52, and vapour compression machine 11 gives the
One three-effect heat exchanger the 62, second three-effect heat exchanger 63 and an effect Falling film heat transfer device 41 provide thermal source, in the second condensate drum 53
Partial condensation liquid flash distillation after enter two effect falling film evaporation rooms 52 due to differential pressure action, then pump into total condensate water pot 7 by pump；
5) triple effect cycle evaporation: pump into the concentrated solution (temperature of triple effect forced-circulation evaporation room 61 from two effect falling film evaporation rooms 52
Spend a holiday and be set to 55 DEG C), after being introduced into the second three-effect heat exchanger 63 heat exchange, then pump into first from the bottom of the second three-effect heat exchanger 63
The bottom of three-effect heat exchanger 62, then enter triple effect forced-circulation evaporation room 61 (temperature is from the upper end of the first three-effect heat exchanger 62
65 DEG C), do not stop circulating-heating, do not stop have new concentrated solution to pump into triple effect forced-circulation evaporation room from two effect falling film evaporation rooms 52
In 61, the concentrated solution (such as with the salt lower limb of liquid) that concentration is higher sinks to the bottom of triple effect forced-circulation evaporation room 61, from
The bottom of triple effect forced-circulation evaporation room 61 enters stirred tank 64 and is stirred, and carries out solid-liquid separation subsequently into centrifuge 65,
Solid unlap processes, and liquid enters mother liquor tank 13, and the liquid in mother liquor tank 13 backs into triple effect through the second pressure filter 9 and forces to follow
In ring vaporization chamber 61, top, triple effect forced-circulation evaporation room 61 steam and two out imitates the steamings out of upper end, falling film evaporation room 52
Vapour converges entrance vapour compression machine 11, and first three-effect heat exchanger the 62, second three-effect heat exchanger 63 and given by vapour compression machine 11
Effect Falling film heat transfer device 41 provides thermal source, and the lower end vapor phase equilibrium mouth of the first three-effect heat exchanger 62 and the second three-effect heat exchanger 63 flows out
Condensed water enter the first condensate drum 43, then rely on pressure differential to enter the second condensate drum 53, then pumped into by pump the coldest
Solidifying water pot 7.With the connector of the first three-effect heat exchanger 62 than triple effect forced-circulation evaporation room on triple effect forced-circulation evaporation room 61
Wanting high with the height of the connector of the second three-effect heat exchanger 63 on 61, the bottom of triple effect forced-circulation evaporation room 61 is that triple effect is forced
Lowest part on circulating and evaporating room 61.The filter membrane of centrifuge 65 is poroid filter membrane, and the filter membrane of the second pressure filter 9 is filter
Cloth, centrifuge 65 is coarse filtration, and the second pressure filter 9 is finly filtration.
First pressure filter the 10, second pressure filter 9 and centrifuge 65, periodically removes, the solid filtered out inside cleaning.
After the material in an effect Falling film heat transfer device 41 is warmed up to boiling point, external steam is closed.
The heavy metal in concentrated solution and salt is collected in first pressure filter the 10, second pressure filter 9 and centrifuge 65.
Step 1) in also include that the second head tank 2, the first head tank 1 and the second head tank 2 regulate pH value the most simultaneously, two
Platform is used in parallel, the using and the reserved.
There are liquid level sensor, liquid level sensor that liquid level signal is sent to PLC on all condensate water pots, controlled by PLC
The outlet regulating valve opening of refrigeration condensate pump controls pump discharge flow, constant liquid level in setting value.Condensate flow and pressure
Instruction monitoring is carried out by effusion meter and pressure inverting.
Not condensing in one effect Falling film heat transfer device 41 and triple effect forced-circulation evaporation room 61 shell side carries some vapor and passes through
First three-effect heat exchanger 62 and the second three-effect heat exchanger 63, after the steam in condensing is not condensed, condensing is not discharged by vacuum pump 14
System, the steam in condensing is not condensed into condensed water and is pooled in total condensate water pot 7 together discharge system with evaporator condensation water.
Electroplating waste processing equipment external fresh activated vapor, steam start vapour pressure after material is heated to evaporating state
Contracting machine 11, starts every time and consumes steam about 0.7 ton.
Electroplating waste processing equipment uses 1 centrifugal compressor 65 to compress indirect steam, makes indirect steam temperature improve
18 DEG C, evaporate thermal source as system.In order to release indirect steam through overcompression produce overheated, in vapour compression machine 11 exit
Water spray.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, related work people
Member can carry out various change and amendment completely in the range of without departing from this utility model technological thought.This reality
The content being not limited in description by novel technical scope, it is necessary to determine its technology according to right
Property scope.
Claims (6)
1. an electroplating waste processing equipment, it is characterised in that: include passing sequentially through the first head tank (1) that pipeline connects, pre-
Thermal, an effect evaporation element, two effect evaporation element and forced-circulation evaporation unit,
One effect evaporation element includes effect Falling film heat transfer device (41), effect falling film evaporation room (42) and first condensate drum (43),
Two effect evaporation elements include two effects Falling film heat transfer device (51), two effect falling film evaporation room (52) and the second condensate drums (53), force
Circulating and evaporating unit include triple effect forced-circulation evaporation room (61), the first three-effect heat exchanger (62), the second three-effect heat exchanger (63),
Stirred tank (64) and centrifuge (65),
The upper tube box of one effect Falling film heat transfer device (41) is connected with preheating device, the lower tube box and of effect Falling film heat transfer device (41)
Effect falling film evaporation room (42) is connected, and the lower tube box of effect Falling film heat transfer device (41) also imitates Falling film heat transfer device (51) lower tube box with two
Being connected, the lower tube box of effect Falling film heat transfer device (41) also imitates the upper tube box of Falling film heat transfer device (41) by exterior line phase with one
Connection, the upper end of effect falling film evaporation room (42) is connected with two effects Falling film heat transfer device (51), effect falling film evaporation room (42)
Lower end is connected with the exterior line of effect Falling film heat transfer device (41) lower tube box, effect Falling film heat transfer device (41) is provided with and the
The condensation-water drain that one condensate drum (43) is connected, effect falling film evaporation room (42) is provided with and the first condensate drum (43)
The vapor phase equilibrium mouth being connected, the first condensate drum (43) is connected with the second condensate drum (53), the second condensate drum (53)
Connect total condensate water pot (7),
The lower tube box of described two effects Falling film heat transfer device (51) and the upper tube box of two effects Falling film heat transfer device (51) are connected, two effect falling liquid films
The lower tube box of heat exchanger (51) and two effects falling film evaporation room (52) are connected, the lower tube box of two effects falling film evaporation room (52) and triple effect
Forced-circulation evaporation room (61) is connected, the bottom of two effects falling film evaporation room (52) and two lower tube box imitating Falling film heat transfer device (51)
Pipeline be connected, two effects Falling film heat transfer device (51) are provided with the condensation-water drain being connected with the second condensate drum (53),
It is provided with, in two effects falling film evaporation room (52), the vapor phase equilibrium mouth being connected with the second condensate drum (53),
Triple effect forced-circulation evaporation room (61) is connected with the upper end of the first three-effect heat exchanger (62), the first three-effect heat exchanger (62)
Lower tube box and the lower tube box of the second three-effect heat exchanger (63) be connected, the upper tube box of the second three-effect heat exchanger (63) is strong with triple effect
The lower tube box of circulating and evaporating room (61) processed is connected, the bottom of triple effect forced-circulation evaporation room (61) and stirred tank (64) upper port
Being connected, the bottom of stirred tank (64) is connected with centrifuge (65), and the liquid outlet of centrifuge (65) connects mother liquor tank
(13), mother liquor tank (13) is connected with triple effect forced-circulation evaporation room (61), and the first three-effect heat exchanger (62) and the second triple effect change
The shell side lower end of hot device (63) is provided with the vapor phase equilibrium mouth being connected with the first condensate drum (43),
Electroplating waste processing equipment also includes vapour compression machine (11), and vapour compression machine (11) connects external Boiler Steam, the
One three-effect heat exchanger (62), the steam inlet of the second three-effect heat exchanger (63) are connected with the outlet of vapour compression machine (11), and two
The effect steam (vapor) outlet of falling film evaporation room (52) upper end and the steam (vapor) outlet on triple effect forced-circulation evaporation room (61) top and steam
The import of compressor (11) is connected, and one imitates the outlet phase of the steam inlet on Falling film heat transfer device (41) and vapour compression machine (11)
Connect,
It is provided with the first pressure filter (10), mother liquor tank (13) and triple effect on the pipeline of described two effect Falling film heat transfer device (51) lower tube box
Pipeline between forced-circulation evaporation room (61) is provided with the second pressure filter (9).
2. electroplating waste processing equipment as claimed in claim 1, it is characterised in that: described electroplating waste processing equipment also sets up
At least one second head tank (2), each second head tank (2) is had to be connected with preheating device respectively.
3. electroplating waste processing equipment as claimed in claim 2, it is characterised in that: described preheating device includes being serially connected
Plate type preheater (81) and tubulation preheater (82), the second head tank (2) is connected with plate type preheater (81), tubulation preheater
(82) it is connected with effect Falling film heat transfer device (41).
4. electroplating waste processing equipment as claimed in claim 1, it is characterised in that: described effect falling film evaporation room (42) and two
Effect falling film evaporation room (52) bottom is provided with vapour liquid separator.
5. electroplating waste processing equipment as claimed in claim 1, it is characterised in that: under described effect Falling film heat transfer device (41)
Being provided with an effect circulating pump (44) on exterior line between bobbin carriage and effect Falling film heat transfer device (41) upper tube box, two effect falling liquid films change
Two effect circulating pumps (54) it are provided with on the pipeline of hot device (51) lower tube box.
6. electroplating waste processing equipment as claimed in claim 3, it is characterised in that: described tubulation preheater (82) is also associated with
Condenser (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620607105.8U CN205710266U (en) | 2016-06-20 | 2016-06-20 | Electroplating waste processing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620607105.8U CN205710266U (en) | 2016-06-20 | 2016-06-20 | Electroplating waste processing equipment |
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| CN205710266U true CN205710266U (en) | 2016-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007137A (en) * | 2016-06-20 | 2016-10-12 | 常州中源工程技术有限公司 | Electroplating wastewater treatment device and method |
| CN110228891A (en) * | 2019-07-22 | 2019-09-13 | 四川省川南酿造有限公司 | A kind of preparation method of brine waste MVR condensing crystallizing |
-
2016
- 2016-06-20 CN CN201620607105.8U patent/CN205710266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007137A (en) * | 2016-06-20 | 2016-10-12 | 常州中源工程技术有限公司 | Electroplating wastewater treatment device and method |
| CN110228891A (en) * | 2019-07-22 | 2019-09-13 | 四川省川南酿造有限公司 | A kind of preparation method of brine waste MVR condensing crystallizing |
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Address after: 213000, No. 16 Donggang Second Road, Weicun Street, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou Zhongyuan Technology Co.,Ltd. Country or region after: China Address before: No. 82 Anjia Zhenxing Road, Xinbei District, Changzhou City, Jiangsu Province, China Patentee before: CHANGZHOU ZHONGYUAN ENGINEERING TECHNOLOGY Co.,Ltd. Country or region before: China |