CN108178213A - Calcium chloride wastewater is concentrated and dried thermal energy coupling device - Google Patents
Calcium chloride wastewater is concentrated and dried thermal energy coupling device Download PDFInfo
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- CN108178213A CN108178213A CN201711491983.3A CN201711491983A CN108178213A CN 108178213 A CN108178213 A CN 108178213A CN 201711491983 A CN201711491983 A CN 201711491983A CN 108178213 A CN108178213 A CN 108178213A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
A kind of calcium chloride wastewater is concentrated and dried thermal energy coupling device,Mainly by evaporation concentration system,Granulating and drying system two large divisions forms,Evaporation concentration system includes triple effect evaporation and separative element,Intermediate pump,Increase concentrated evaporator,Enrichment imitates separator,Enrichment imitates circulating pump,Underflow discharging pump,Waste heat double-effect evaporation and separative element,Condenser,Cooling tower,Circulating cooling water pump,Evaporative condenser water pump,Vacuum pump,Steam condensate (SC) tank,Steam condensate (SC) pump etc.,Granulating and drying system includes spray granulation drier,Classifying screen,Pulverizer,Cooler,Elevator,Screw conveyor,Cyclone dust collectors,Hopper,Automatic packaging machine,Underflow storage tank,Underflow pump,Compressed air heater,Air blower,Air preheater,Air heater,Fuel gas hot-blast stove,Wet scrubber,De-dusting cycle pumps,Air-introduced machine etc.,Chemical industry can be promoted the use of,It is metallurgical,Oil,Papermaking,Fermentation,New energy,The solution of the industries such as environmental protection is concentrated and dried.
Description
Technical field
The invention belongs to wastewater treatment equipment or equipment technical fields, and in particular to be concentrated and dried to a kind of calcium chloride wastewater
Thermal energy coupling device.
Background technology
It is substantially solute and the physical process of solvent separation in a kind of solution to be concentrated by evaporation.Its basic principle be by containing
There is the aqueous solution of the solutes such as calcium chloride, heat under vacuum conditions, evaporate the aqueous solvent of volatile in solution, pass through condensation
Device utilizes cooling water condensation, forms evaporation condensate；With the evaporation of moisture, the volume of solution reduces, not volatilizable in solution
The concentration of the solutes such as calcium chloride increases, and forms the chlorination concentrated calcium solution that design needs.
Granulating and drying is substantially to carry out making powder by way of being aggregated coating granulation, and certain density feed liquid is by different
Become different size of drop after the atomization of form atomizer, a part of drop is adhered to and infiltrated and (applied on the surface of larger particles
Layer), a part of drop is coated on the surface (coating) of smaller particle, a part of drop adherency fine powder (aggegation), a part of drop
Self-contained crystal seed.
By suitably changing operating parameter and adjustment nozzle atomization granular size, make the rapid convection drying of the drop after atomization
As calcium chloride fine powder, under the entrainment effect of wind, directly finished product is collected and then is cooled into cyclone separator.Segmentation
Using different fluidizing velocities, it ensure that granulating and drying process operation is stablized.Using heavy caliber nozzle, it is ensured that nozzle atomization is led to
Smooth property, can be with continuous operation.Using external detachable stainless steel nozzle, nozzle can be overhauled in the case that non-stop-machine.Fluidisation
Bed dryer is freedom from repairs equipment, because there is no runnability equipment, the vibration device of particularly no high intensity, with other equipment
Particularly Vibratingfluidbeddrier is compared, and does not need to repair, and stable, operating cost is low.Material is in granulating and drying process
Middle drying quality stable and uniform has great operational stability.At present, it is mainly asked existing for calcium chloride evaporation concentration device
Topic：Apparatus system fluctuation of service；Device Btu utilization is insufficient, causes heat waste；Calcium chloride concentration after concentration is relatively low,
Cause below energy consumption for drying it is very high；Drying system fluctuation of service is granulated bad control etc..
Invention content
The technical problems to be solved by the invention are to overcome the shortcomings of above-mentioned existing apparatus, provide a kind of reasonable design,
It is simple for process, convenient for automation control, be concentrated and dried efficient calcium chloride wastewater and be concentrated and dried thermal energy coupling device.
Solve above-mentioned technical problem the technical solution adopted is that：Calcium chloride water from wastewater disposal basin enters cooling pond, cold water
Calcium chloride water in pond enters the first entrance of condenser by the circulating cooling water pump being mounted on pipeline, and the first of condenser
The entrance of cooling tower of the outlet a-road-through piping with being arranged at the top of cooling pond is connected, another way is by being mounted on pipeline
Waste heat two imitate circulating pump be connected with an entrance of waste heat 2nd effect evaporator, the second outlet of condenser and the entrance of vacuum pump
It is connected, evaporation condensate reuse, the effect evaporation of waste heat two are discharged in third outlet by the evaporative condenser water pump being mounted on pipeline
The entrance that separator is imitated in the outlet of device by pipeline and waste heat two is connected, waste heat two imitate separator an outlet pass through pipeline and
The second entrance of condenser is connected, circulating pump and the effect cycle of waste heat one are imitated in another outlet by the waste heat two being mounted on pipeline
Pump is connected with an entrance of waste heat 1st effective evaporator, and an outlet of waste heat 1st effective evaporator is detached by pipeline with the effect of waste heat one
The entrance of device is connected, and the outlet that waste heat one imitates separator is connected by pipeline with another entrance of waste heat 2nd effect evaporator
The first entrance of circulating pump and triple effect cycle pump and triple effect evaporator is imitated by the waste heat one being mounted on pipeline in logical, another outlet
It is connected, the second outlet of triple effect evaporator is connected by pipeline with the entrance of triple effect separator, and the one of triple effect separator goes out
Mouthful it is connected by pipeline with the second entrance of condenser, another outlet passes through the intermediate pump that is mounted on pipeline and preheater
One entrance is connected, and an outlet of preheater is connected by pipeline with an entrance of 1st effective evaporator, another outlet and steam
The entrance of condensate water pot is connected, and the outlet of steam condensate (SC) tank is pumped by steam condensate (SC) sends steam condensate (SC) back to boiler,
One outlet of 1st effective evaporator is connected by pipeline with the entrance of an effect separator, another export passes through pipeline and preheater
Another entrance is connected, and effect separator one outlet is connected by pipeline with the entrance of 2nd effect evaporator, another outlet passes through
An effect circulating pump on pipeline is connected with two effect one entrances of separator, and the first outlet of 2nd effect evaporator passes through pipeline
It is connected with the second entrance of condenser, second outlet is connected by pipeline with another entrance of two effect separators, third goes out
Mouth is connected by the second entrance of pipeline and triple effect evaporator, and an outlet of two effect separators passes through pipeline and triple effect evaporator
Third entrance be connected, it is another outlet by be mounted on pipeline two effect circulating pumps be connected with the entrance of underflow storage tank,
The third outlet of triple effect evaporator is connected by pipeline with the second entrance of condenser, third outlet passes through pipeline and condenser
Third entrance be connected, an outlet of triple effect separator, which by the triple effect cycle that is mounted on pipeline pumps a-road-through, to be crossed underflow and goes out
Material pump imitates circulating pump by enrichment into underflow storage tank, another way and is connected with increasing an entrance of concentrated evaporator, and enrichment effect is steamed
The entrance that separator is imitated in the outlet of hair device by pipeline and enrichment is connected, the one of enrichment effect separator export pass through pipeline with it is cold
The second entrance of condenser is connected, another outlet is connected by the underflow discharging pump being mounted on pipeline with the entrance of underflow storage tank
Logical, the life steam from boiler respectively enters 1st effective evaporator, another entrance for increasing concentrated evaporator；
Steam from boiler enters underflow storage tank, and the outlet of underflow storage tank is entered by the underflow pump being mounted on pipeline
Spray granulation drier, the compressed air from air compression station enter spray granulation drier by compressed air heater, whitewashing
The material of granulating and drying machine is sent into elevator, and material is sent into classifying screen by elevator, and the material in classifying screen is sent into cooling all the way
Machine, another way are sent into pulverizer, and the material of pulverizer is sent into screw conveyor all the way, another way is sent into cyclone dust collectors, spiral
The material of conveyer is sent into cyclone dust collectors all the way, another way is sent into spray granulation drier, the solids in cyclone dust collectors
Material is sent into screw conveyor, gas is sent into the entrance of wet scrubber, and the material in cooler is sent into automatic packaging by hopper
Machine；
Steam from boiler enter air heater air inlet and compressed air heater air inlet and whitewashing make
The air inlet of grain drying machine, cold air enter an entrance of air preheater by air blower, waste heat 1st effective evaporator it is another
Outlet is connected by pipeline with another entrance of air preheater, and an outlet of air preheater is connected, separately with air-introduced machine
One outlet is connected with air heater, and the outlet of air heater is connected with the entrance of fuel gas hot-blast stove, fuel gas hot-blast stove
One outlet be connected with the air inlet of spray granulation drier, it is another export be connected with an entrance of wet scrubber, it is wet
One outlet of formula deduster is connected by pipeline with another entrance of waste heat 1st effective evaporator, another outlet passes through mounted on pipe
On road de-dusting cycle pump is connected with another entrance of wet scrubber, waste heat one effect separator outlet by pipeline with it is wet
Another entrance of formula deduster is connected.
The present invention has the following advantages：
1st, processing calcium chloride wastewater is combined using dry waste heat economic benefits and social benefits pre-concentration+three-effect evaporation and condensation+single-action enrichment
Evaporation concentration device, technique is advanced, reasonable, while obvious energy conservation；
2nd, each evaporation and concentration unit is concentrated using negative pressure evaporation：Due to negative pressure evaporation, total heat transfer temperature difference increase increases
Equipment heat exchange efficiency, can reduce total construction investment；Under condition of negative pressure, evaporating temperature is low, rotten to equipment, the material of pipeline
Erosion reduces, and can ensure continuous and stable production；Processing procedure operates under negative pressure, ensures clean and safe production, reduces workshop
Environmental pollution.Operating environment and the environment of plant are greatly improved；
3rd, contain SO in calcium chloride wastewater4 2-、PO4 3-、F-Ion, the inorganic salts of formation are in saturation state in the solution,
These calcium salts easily crystallize fouling in evaporating concentration process, and evaporation element of the invention is all concentrated using forced-circulation evaporation,
The fouling of heat exchanger tube can effectively be slowed down, blocked, strengthen heat transfer efficiency；
4th, it is big to increase high concentrated evaporator discharge concentration, boiling point height, viscosity, using the forced-circulation evaporation of steam direct heating
Device, evaporation intensity is big, efficient, and heat exchanger tube is not easy fouling；
5th, the setting of calcium chloride granulating and drying system is granulated carries out with dry in same equipment, easy to operate, failure rate
It is small；
6th, calcium chloride granulating and drying system uses thermal energy coupling energy-saving measure, and the high temperature waste vapour heat of generation first carries out chlorination
Calcium waste water pre-concentration reheats a cold air, so as to reach energy saving purpose after preheating；
7th, calcium chloride granulating and drying dust pelletizing system uses dry and wet two-stage dust removal, reaches environment protection emission requirement.Dry waste gas is first
By whirlwind dry method dust, using spray scrubber wet dedusting；
8th, air heater uses combustion gas indirectly heat air, meets high humidity weather conditions, combustion of natural gas is avoided to generate
A large amount of moisture content get into the air, and influence drying effect.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the invention.
In figure：1st, steam condensate (SC) pumps；2nd, steam condensate (SC) tank；3rd, preheater；4th, an effect circulating pump；5th, an effect evaporation
Device；6th, an effect separator；7th, 2nd effect evaporator；8th, two effect separator；9th, two effect circulating pump；10th, triple effect evaporator；11st, triple effect
Separator；12nd, triple effect cycle pumps；13rd, intermediate pump；14th, increase concentrated evaporator；15th, enrichment effect separator；16th, enrichment effect cycle
Pump；17th, condenser；18th, evaporative condenser water pump；19th, circulating cooling water pump；20th, cooling tower；21st, cooling pond；22nd, vacuum pump；
23rd, underflow discharging pump；24th, waste heat two imitates separator；25th, waste heat 2nd effect evaporator；26th, waste heat two imitates circulating pump；27th, waste heat one
Imitate separator；28th, waste heat 1st effective evaporator；29th, waste heat one imitates circulating pump；30th, de-dusting cycle pumps；31st, wet scrubber；32、
Air-introduced machine；33rd, air blower；34th, air preheater；35th, air heater；36th, fuel gas hot-blast stove；37th, automatic packaging machine；38、
Hopper；39th, elevator；40th, cooler；41st, pulverizer, 42, spray granulation drier；43rd, underflow pump；44th, underflow storage tank；
45th, screw conveyor；46th, compressed air heater；47th, cyclone dust collectors；48th, classifying screen.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples, but the present invention is not restricted to these implement
Example.
Embodiment 1
In Fig. 1, a kind of calcium chloride wastewater of the present invention is concentrated and dried thermal energy coupling device, the calcium chloride water from wastewater disposal basin
Into cooling pond 21, the calcium chloride water in cooling pond 21 enters condenser 17 by the circulating cooling water pump 19 being mounted on pipeline
First entrance, the first outlet a-road-through piping of condenser 17 and be arranged on the top of cooling pond 21 cooling tower 20 entrance
It is connected, another way imitates circulating pump 26 by the waste heat two being mounted on pipeline and is connected with an entrance of waste heat 2nd effect evaporator 25
It is logical, the second outlet of condenser 17 is connected with the entrance of vacuum pump 22, third export it is cold by the evaporation being mounted on pipeline
Condensate pump 18 discharges evaporation condensate reuse, and separator 24 is imitated in the outlet of waste heat 2nd effect evaporator 25 by pipeline and waste heat two
Entrance is connected, waste heat two imitate separator 24 one outlet be connected by pipeline with the second entrance of condenser 17, it is another go out
Mouth passes through the waste heat two being mounted on pipeline and imitates circulating pump 26 and the effect circulating pump 29 of waste heat one and the one of waste heat 1st effective evaporator 28
Entrance is connected, and an outlet of waste heat 1st effective evaporator 28 is connected by pipeline with the entrance of the effect separator 27 of waste heat one, is given up
The outlet that heat one imitates separator 27 is connected by pipeline with another entrance of waste heat 2nd effect evaporator 25, another outlet passes through
Waste heat one on pipeline imitates circulating pump 29 and triple effect cycle pump 12 is connected with the first entrance of triple effect evaporator 10, and three
The second outlet of effect evaporator 10 is connected by pipeline with the entrance of triple effect separator 11, and an outlet of triple effect separator 11 is logical
Piping is connected with the second entrance of condenser 17, another intermediate pump 13 and preheater 3 exported by being mounted on pipeline
An entrance be connected, preheater 3 one outlet be connected by pipeline with an entrance of 1st effective evaporator 5, it is another export and
The entrance of steam condensate (SC) tank 2 is connected, and steam condensate (SC) is sent by steam condensate (SC) pump 1 in the outlet of steam condensate (SC) tank 2
Back boiler, an outlet of 1st effective evaporator 5 is connected by pipeline with the entrance of an effect separator 6, another outlet passes through pipeline
Be connected with another entrance of preheater 3, one effect separator 6 one outlet be connected by pipeline with the entrance of 2nd effect evaporator 7,
Another outlet is connected by the effect circulating pump 4 being mounted on pipeline with two effect 8 one entrances of separator, 2nd effect evaporator 7
First outlet is connected by pipeline with the second entrance of condenser 17, second outlet imitates the another of separators 8 by pipeline and two
One entrance is connected, third outlet is connected by the second entrance of pipeline and triple effect evaporator 10, and the one of two effect separators 8 go out
Mouth is connected by pipeline with the third entrance of triple effect evaporator 10, circulating pumps are imitated in another outlet by be mounted on pipeline two
9 are connected with the entrance of underflow storage tank 44, and the third outlet of triple effect evaporator 10 passes through the second entrance of pipeline and condenser 17
Be connected, third outlet be connected by pipeline with the third entrance of condenser 17, an outlet of triple effect separator 11 passes through peace
Triple effect cycle 12 a-road-throughs of pump on pipeline are crossed underflow discharging pump 23 and are followed into underflow storage tank 44, another way by enrichment effect
Ring pump 16 is connected with increasing an entrance of concentrated evaporator 14, and the outlet for increasing concentrated evaporator 14 is detached by pipeline with enrichment effect
The entrance of device 15 is connected, and an outlet of enrichment effect separator 15 is connected, separately by pipeline with the second entrance of condenser 17
One outlet is connected by the underflow discharging pump 23 being mounted on pipeline with the entrance of underflow storage tank 44, the life steam from boiler
Respectively enter 1st effective evaporator 5, another entrance for increasing concentrated evaporator 14；
Steam from boiler enters underflow storage tank 44, and the outlet of underflow storage tank 44 passes through the underflow pump that is mounted on pipeline
43 enter spray granulation drier 42, and the compressed air from air compression station is done by compressed air heater 46 into slurry-spraying pelletizing
Dry machine 42, the material of spray granulation drier 42 are sent into elevator 39, and material is sent into classifying screen 48, classifying screen 48 by elevator 39
In material be sent into cooler 40 all the way, another way is sent into pulverizer 41, the material of pulverizer 41 is sent into screw conveyor all the way
45th, another way is sent into cyclone dust collectors 47, and the material of screw conveyor 45 is sent into cyclone dust collectors 47 all the way, another way is sent into spray
Granulating and drying machine 42 is starched, the solid material in cyclone dust collectors 47 is sent into screw conveyor 45, gas is sent into wet scrubber 31
Entrance, the material in cooler 40 is sent into automatic packaging machine 37 by hopper 38；
Steam from boiler enters the air inlet of air heater 35 and 46 air inlet of compressed air heater and spray
The air inlet of granulating and drying machine 42 is starched, cold air enters an entrance of air preheater 34 by air blower 33, and the effect of waste heat one is steamed
Hair device 28 another outlet be connected by pipeline with another entrance of air preheater 34, air preheater 34 one outlet and
Air-introduced machine 32 is connected, another outlet is connected with air heater 35, outlet and the fuel gas hot-blast stove 36 of air heater 35
Entrance be connected, fuel gas hot-blast stove 36 one outlet be connected with the air inlet of spray granulation drier 42, it is another outlet and
One entrance of wet scrubber 34 is connected, and an outlet of wet scrubber 34 passes through the another of pipeline and waste heat 1st effective evaporator 28
One entrance is connected, another outlet pumps another entrance phase of 30 and wet scrubber 31 by the de-dusting cycle being mounted on pipeline
Connection, the outlet that waste heat one imitates separator 27 are connected by pipeline with another entrance of wet scrubber 34.
The selection of present device material fully meets the calcium chloride wastewater feature：High Cl-, micro F- (later stage accumulate F-)
Feature, every material contacted with material, relatively low calcium chloride concentration is with using TA2 or TA10, higher calcium chloride concentration during temperature
With using TA9 during temperature, ensure that equipment runs well for a long time；Heat tracing measure in high calcium chloride concentration dope transmission process, is adopted
With stainless steel electrical heating heating tape, heat tracing temperature height (200~280 DEG C), each charging line temperature display is adjustable, ensures material
Conveying non-scaling does not block；High calcium chloride concentration dope carries out mist projection granulating using two-phase flow (hot-air+liquid calcium chloride) nozzle
Dry, atomizing effect is good, is granulated uniform；The present apparatus uses DCS computer controlled automatics, continuous feed, continuous discharge work side
Formula, labor intensity is low, sets automatic cleaning and descaling system, periodically carries out descaling rinsing to equipment, ensures equipment high efficiency rate
Operating, reaches energy saving purpose.
The operation principle of the present invention is as follows：
Calcium chloride wastewater material flow：
Calcium chloride wastewater is arrived first in cooling pond 21, and calcium chloride wastewater is got to condenser 17 by circulating cooling water pump 19
In, the indirect steam for condensing end effect improves the temperature of itself simultaneously, from condenser 17 out most of calcium chloride wastewater to
Cooling tower 20 is completed to carry out dilute chlorination calcium stock solution initial concentration, and another part calcium chloride wastewater enters the effect evaporation of waste heat two
Device 25.
Material is imitated evaporation by the material for entering waste heat 2nd effect evaporator 25 by the effect circulating pump 26 of waste heat two in waste heat two
Circulating-heating in device 25, the material for reaching design boiling point imitate completion vapour in separator 24, liquid separation in waste heat two, complete concentration
Material enters waste heat 1st effective evaporator 28 by pressure difference, enters waste heat 1st effective evaporator, and 28 material is imitated by waste heat one to be recycled
The circulating-heating in waste heat 1st effective evaporator 28 by material of pump 29, the material for reaching design boiling point are imitated in waste heat one in separator 27
Vapour, liquid separation are completed, the material for completing concentration enters triple effect evaporator 10 by pressure difference.
Into triple effect evaporator 10 material by triple effect cycle pump 12 by material in triple effect evaporator 10 circulating-heating,
The material for reaching design boiling point completes vapour, liquid separation in triple effect separator 11, and the material for completing concentration is got to by intermediate pump 13
1st effective evaporator 5, by preheating in way, 3 preheatings, the heat source of preheating is the steam condensate (SC) that 1st effective evaporator 5 generates, and has been preheated
Into it is rear enter 1st effective evaporator 5, by one effect circulating pump 4 by material the circulating-heating in 1st effective evaporator 5, reach design boiling point
Material one effect separator 6 in complete vapour, liquid separation, complete concentration material enter 2nd effect evaporator 7 by pressure difference, into two
Imitate evaporator, 7 material by two effect circulating pumps 9 by material the circulating-heating in 2nd effect evaporator 7, reach the object of design boiling point
Material is imitated two completes vapour, liquid separation in separators 8, the material for completing concentration enters increasing concentrated evaporator 14 by pressure difference, into increasing
The material of concentrated evaporator 14 by enrichment circulating pump 16 by material in 14 circulating-heating of enrichment evaporator, reach design boiling point
Material completes vapour, liquid separation in enrichment effect separator 16, and the material for being finally completed concentration gets to granulation by underflow discharging pump 23
Drying section removes granulating and drying.
Heat steam flow：
Material in the advanced 5 shell side heating evaporation tube side of 1st effective evaporator of life steam from boiler, the material of heating exist
Flash distillation carries out vapor-liquid separation in one effect separator 6, and the indirect steam of generation enters back into 7 shell side heating evaporation pipe of 2nd effect evaporator
Material in journey, the material of heating flashes in two effect separators 8 carries out vapor-liquid separation, and the indirect steam of generation is entered back into three
The material in 10 shell side heating evaporation tube side of evaporator is imitated, the material of heating flashes in triple effect separator 11 carries out vapour-liquid point
The shell side that indirect steam from, generation finally arrives condenser 17 is condensed.
Life steam of the another part from boiler enters the material in the shell side heating evaporation tube side of enrichment evaporator 14, adds
The flash distillation in enrichment imitates separator 15 of the material of heat carries out vapor-liquid separation, and the indirect steam of generation finally also leads into condenser 17
Shell side is condensed.
The waste vapour by washing is come out from drying section, first enters the shell side heating evaporation tube side of waste heat 1st effective evaporator 28
In material, out provide heat source to 34 preheated air of air preheater again from shell side, the material heated in tube side is in waste heat one
It imitates flash distillation in separator 27 and carries out vapor-liquid separation, the indirect steam of generation enters back into the heating of 25 shell side of waste heat 2nd effect evaporator and steams
The material in tube side is sent out, the material of heating flashes in waste heat two imitates separator 24 carries out vapor-liquid separation, the indirect steam of generation
The last shell side for also arriving condenser 17 is condensed.
Condensed water flow：
The steam condensate (SC) of 5 shell side of 1st effective evaporator flows to the material in 3 shell side of preheater preheating tube side by pressure difference, from
Tube side is flowed to after coming out in steam condensate (SC) tank 2, and it is cold also to flow to steam by pressure difference for enrichment evaporation, the steam condensate (SC) of 14 shell sides
In condensate tank 2, back boiler or its use are got then by steam condensate (SC), 1.
7 shell side condensed water of 2nd effect evaporator flows into 10 shell side of triple effect evaporator flash distillation condensation (heat is utilized) by pressure difference,
Then with 10 shell side condensed water of triple effect evaporator, flowed to by pressure difference in the foul condensate storage tank of 17 lower part of condenser, finally by
Evaporative condenser water pump 18 gets reuse or reprocessing.
The foul condensate of 28 shell side of waste heat 1st effective evaporator flows into the 25 shell side flash distillation condensation of waste heat 2nd effect evaporator by pressure difference
(heat is utilized), then with 25 shell side condensed water of waste heat 2nd effect evaporator, the dirt that 17 lower part of condenser is flowed to by pressure difference is cold
In condensate storage tank, reuse or reprocessing are finally got by evaporative condenser water pump 18.
Vacuum system：
Vacuum system is made of condenser 17, vacuum pump 22, and the fixed gas in system is extracted out, maintains system vacuum, real
Existing negative pressure evaporation.
Calcium chloride wastewater granulating and drying material flow：
It is arrived first in underflow storage tank 44 from the calcium chloride underflow for being concentrated by evaporation workshop section, whitewashing is then squeezed by underflow pump 43
Granulating and drying is completed in granulating and drying machine 42, dried material is sent to classifying screen 48 by elevator 39 and is screened, after screening
Qualified material enters cooler 40 and cools down, and is then fed into hopper 38, completes to pack automatically by automatic packaging machine 37.
Large granular materials and small part fine grained after classifying screen screening are broken directly to being crushed in pulverizer 41
It is sent to after broken in screw conveyor 45.
During granulating and drying, the minute quantity dust that hot-air carries is laggard by the progress of cyclone dust collectors 47 gas solid separation
Row recycling, also flows to after recycling in screw conveyor 45, finally unifies into spray granulation drier 42 to make as bottom material nucleus
With, during entire granulating and drying, the fully automated adjusting of flow of calcium chloride underflow.
Hot wind flow：
Processing medium of the hot-air as granulating and drying, main process are：Cold air is filtered first by dry air
It after device, drying air fan silencer, is sent in air preheater 34 by air blower 33, utilizes the heat generated during granulating and drying
Air is first preheated, and then in air heater 35, is heated using high steam, finally to fuel gas hot-blast stove 36
In, using combustion of natural gas indirectly heat to required temperature, slurry-spraying pelletizing drying is then passed to, 42 is interior highly concentrated with atomization
It spends underflow and carries out sufficient heat exchange completion granulating and drying, compressed air is heated by compressed air, and 46 are heated using steam, are added
Enter to during slurry-spraying pelletizing, the effect of the atomization of underflow can be further enhanced.
It completes to carry out gas solid separation by cyclone dust collectors 47 with minute quantity fine powder in the hot-air after granulating and drying
Afterwards, it enters back into wet scrubber 31 and is recovered dissolving, the waste heat of last tail gas imitates evaporation to workshop section is concentrated by evaporation to waste heat one
The evaporation of device 28 provides heat source, after the completion again in air preheater 34 to being preheated into system cold air, after the completion of preheating
Tail gas is discharged by air-introduced machine 32.
Claims (1)
1. a kind of calcium chloride wastewater is concentrated and dried thermal energy coupling device, it is characterised in that：Calcium chloride water from wastewater disposal basin enters
Cooling pond, the calcium chloride water in cooling pond enter the first entrance of condenser by the circulating cooling water pump being mounted on pipeline,
The entrance of cooling tower of the first outlet a-road-through piping of condenser with being arranged at the top of cooling pond is connected, another way passes through
Waste heat two on pipeline imitates circulating pump and is connected with an entrance of waste heat 2nd effect evaporator, the second outlet of condenser and
The entrance of vacuum pump is connected, evaporation condensate reuse is discharged in third outlet by the evaporative condenser water pump being mounted on pipeline,
The entrance that separator is imitated in the outlet of waste heat 2nd effect evaporator by pipeline with waste heat two is connected, and the one of the effect separator of waste heat two goes out
Mouthful be connected by pipeline with the second entrance of condenser, another outlet by the waste heat two being mounted on pipeline imitate circulating pump and
Waste heat one imitates circulating pump and is connected with an entrance of waste heat 1st effective evaporator, an outlet of waste heat 1st effective evaporator by pipeline and
The entrance that waste heat one imitates separator is connected, and the outlet that waste heat one imitates separator passes through the another of pipeline and waste heat 2nd effect evaporator
One entrance is connected, circulating pump and triple effect cycle pump and triple effect evaporator are imitated in another outlet by the waste heat one being mounted on pipeline
First entrance be connected, the second outlet of triple effect evaporator is connected by pipeline with the entrance of triple effect separator, triple effect point
An outlet from device is connected by pipeline with the second entrance of condenser, another intermediate pump exported by being mounted on pipeline
It is connected with an entrance of preheater, an outlet of preheater is connected with an entrance of 1st effective evaporator by pipeline, is another
Outlet is connected with the entrance of steam condensate (SC) tank, and the outlet of steam condensate (SC) tank is pumped by steam condensate (SC) by steam condensate (SC)
Send boiler back to, an outlet of 1st effective evaporator is connected by pipeline with the entrance of an effect separator, another outlet passes through pipeline
It is connected with another entrance of preheater, effect separator one outlet is connected, separately by pipeline with the entrance of 2nd effect evaporator
One outlet is connected by the effect circulating pump being mounted on pipeline with two effect one entrances of separator, and the first of 2nd effect evaporator goes out
Mouth is connected by pipeline with the second entrance of condenser, second outlet is connected by pipeline with another entrance of two effect separators
Logical, third outlet is connected by the second entrance of pipeline and triple effect evaporator, an outlet of two effect separators by pipeline and
The third entrance of triple effect evaporator is connected, another outlet is entered by the two effect circulating pumps that are mounted on pipeline and underflow storage tank
Mouth is connected, and the third outlet of triple effect evaporator is connected by pipeline with the second entrance of condenser, third outlet passes through pipe
Road is connected with the third entrance of condenser, and an outlet of triple effect separator is pumped all the way by the triple effect cycle being mounted on pipeline
Underflow storage tank is entered by underflow discharging pump, another way imitates circulating pump by enrichment and is connected with increasing an entrance of concentrated evaporator
Logical, the outlet for increasing concentrated evaporator is connected by pipeline with the entrance of enrichment effect separator, and enrichment imitates an outlet of separator
It is connected by pipeline with the second entrance of condenser, another outlet is stored up by the underflow discharging pump and underflow being mounted on pipeline
The entrance of tank is connected, and the life steam from boiler respectively enters 1st effective evaporator, another entrance for increasing concentrated evaporator；
Steam from boiler enters underflow storage tank, and the outlet of underflow storage tank enters whitewashing by the underflow pump being mounted on pipeline
Granulating and drying machine, the compressed air from air compression station enter spray granulation drier, slurry-spraying pelletizing by compressed air heater
The material of drying machine is sent into elevator, and material is sent into classifying screen by elevator, and the material in classifying screen is sent into cooler, another all the way
It is sent into pulverizer all the way, the material of pulverizer is sent into screw conveyor all the way, another way is sent into cyclone dust collectors, screw conveyor
Material be sent into cyclone dust collectors all the way, another way is sent into spray granulation drier, the solid material in cyclone dust collectors is sent into
Screw conveyor, gas are sent into the entrance of wet scrubber, and the material in cooler is sent into automatic packaging machine by hopper；
Steam from boiler enters the air inlet of air heater and compressed air heater air inlet and slurry-spraying pelletizing are done
The air inlet of dry machine, cold air enter an entrance of air preheater, another outlet of waste heat 1st effective evaporator by air blower
Be connected by pipeline with another entrance of air preheater, air preheater one outlet be connected with air-introduced machine, it is another go out
Mouth is connected with air heater, and the outlet of air heater is connected with the entrance of fuel gas hot-blast stove, and the one of fuel gas hot-blast stove
Outlet is connected with the air inlet of spray granulation drier, another outlet is connected with an entrance of wet scrubber, and wet type is removed
One outlet of dirt device is connected by pipeline with another entrance of waste heat 1st effective evaporator, another outlet is by being mounted on pipeline
De-dusting cycle pump be connected with another entrance of wet scrubber, waste heat one effect separator outlet removed by pipeline and wet type
Another entrance of dirt device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491983.3A CN108178213A (en) | 2017-12-30 | 2017-12-30 | Calcium chloride wastewater is concentrated and dried thermal energy coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711491983.3A CN108178213A (en) | 2017-12-30 | 2017-12-30 | Calcium chloride wastewater is concentrated and dried thermal energy coupling device |
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| Publication Number | Publication Date |
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| CN108178213A true CN108178213A (en) | 2018-06-19 |
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| CN201711491983.3A Pending CN108178213A (en) | 2017-12-30 | 2017-12-30 | Calcium chloride wastewater is concentrated and dried thermal energy coupling device |
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| Country | Link |
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| CN109078570A (en) * | 2018-08-24 | 2018-12-25 | 江西鹏腾实业有限公司 | A kind of continuous evaporation drying and granulating equipment |
| CN109381879A (en) * | 2018-12-26 | 2019-02-26 | 郑州博大浓缩干燥设备有限公司 | Aluminium polychloride production evaporation and concentration spray drying system |
| CN109432808A (en) * | 2018-12-26 | 2019-03-08 | 郑州博大浓缩干燥设备有限公司 | Energy-saving and environment-friendly DDGS waste heat vapo(u)rization system |
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| CN109381879A (en) * | 2018-12-26 | 2019-02-26 | 郑州博大浓缩干燥设备有限公司 | Aluminium polychloride production evaporation and concentration spray drying system |
| CN109432808A (en) * | 2018-12-26 | 2019-03-08 | 郑州博大浓缩干燥设备有限公司 | Energy-saving and environment-friendly DDGS waste heat vapo(u)rization system |
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Application publication date: 20180619 |