CN109381880A - Ammonium chloride waste-water triple effect evaporation crystal system and method - Google Patents
Ammonium chloride waste-water triple effect evaporation crystal system and method Download PDFInfo
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- CN109381880A CN109381880A CN201811291641.1A CN201811291641A CN109381880A CN 109381880 A CN109381880 A CN 109381880A CN 201811291641 A CN201811291641 A CN 201811291641A CN 109381880 A CN109381880 A CN 109381880A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/16—Halides of ammonium
- C01C1/164—Ammonium chloride
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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Abstract
The invention belongs to chemical equipment technical fields, and in particular to a kind of ammonium chloride waste-water triple effect evaporation crystal system and method.The ammonium chloride waste-water triple effect evaporation crystal system includes an effect evaporation element, triple effect evaporation unit, triple effect evaporation unit and condensing unit, specifically: the effect evaporation element includes that an effect separates crystallization apparatus, an effect circulating pump and an effect heating device；The two effects evaporation element includes two effect separation crystallization apparatus, two effect circulating pumps and two effect heating devices；The triple effect evaporation unit includes feed pump, triple effect separation crystallization apparatus, triple effect cycle pump and triple effect heating device；The condensing unit includes condenser, condensate water pot and condensate pump.Design is scientific and reasonable for ammonium chloride waste-water triple effect evaporation crystal system of the present invention, and running is stablized, and the consumption of the energy substantially reduces, and the ammonium chloride crystals amount and output that obtain also greatly increase.
Description
Technical field
The invention belongs to chemical equipment technical fields, and in particular to a kind of ammonium chloride waste-water triple effect evaporation crystal system and side
Method.
Background technique
Ammonium chloride waste-water is generated based on containing ammonium chloride in the process of producing product such as chemical fertilizer, rare earth, printing, plating
Various concentration organic-inorganic waste water, a large amount of discharges of ammonia nitrogen and chloride ion therein can all generate very big danger to environment
Evil will lead to water eutrophication and water resource deteriorate, while can also make to the health of human body if ammonia nitrogen concentration is excessively high in water body
It is influenced at certain.Still further aspect, a large amount of discharges of chloride ion also result in the change of soil texture, thus to crops and
Very big harm is brought in hypogee, therefore the waste water has to pass through processing can be only achieved emission request.Currently, with Chinese society
The scale of economic fast development and industry production, generated ammonium chloride waste-water amount is also being continuously increased, if the waste water
Direct emission not only can cause environmental pollution, while can also enterprise's production cost be made to improve.With adding for national environmental protection dynamics
Strong and energy prices soaring, enterprise is also faced with huge pressure, because to generally use evaporation dense for ammonium chloride solution crystallization
Contracting technique, traditional handicraft steam consumption is high, and consuming resource is more, higher cost, and the consumption of the energy keeps the burden of vast enterprise anxious
Increase severely big.
106277117 A of Chinese patent literature CN discloses a kind of double independent low temperature double-effect evaporations of adverse current of ammonium chloride waste-water
Method and apparatus, after this method is by being evaporated separation into an effect evaporation element and two effect evaporation elements for ammonium chloride solution
Crystallization filtering, obtains ammonium chloride product, which reduces steam consumption, but due to the limitation of double-effect evaporation unit, steams
Hair crystalline rate is low, therefore the ammonium chloride crystals amount obtained is lower.104692415 A of Chinese patent literature CN discloses one kind
To the evaporative crystallisation process of ammonium chloride when production potassium nitrate, ammonium chloride mother liquor is passed through in multiple-effect evaporation crystallization apparatus sharp by this method
The process and crystallization process of multiple effect counter current evaporation are carried out with steam, multi-effect evaporating device includes 1st effective evaporator, two effect evaporations
Device and triple effect evaporator, the invention steam consumption reduce, and crystallization condition is stablized, but the condensed water after steam heating is directly arranged
It walks, directly results in the waste with water resource, increase production cost.
Currently, the day crystallization content for the ammonium chloride that existing ammonium chloride waste-water evaporation and crystallization system obtains is 5~6 tons, day processing
Amount is 50~65 tons, the reason of leading to the result have it is very much, as the concentration of ammonium chloride in ammonium chloride waste-water is lower, filter when compare
Difficulty causes the factors such as a certain amount of crystallization is lost and evaporative crystallization efficiency is bad.On the other hand, when ammonium chloride waste-water enters
After evaporation element evaporation, since concentration gradually rises, mobility is deteriorated, and ammonium chloride solution gradually has crystal precipitation, easily makes to add
Tubulation fouling, and lead to the blocking for heating tubulation, so that equipment is limited to the state that cannot be run, influences the efficiency of evaporative crystallization.Cause
This, needs to overcome that current ammonium chloride waste-water evaporation and crystallization system water consumption is big, energy consumption is big, equipment is unstable and obtains
Ammonium chloride crystals amount it is low the problems such as, provide that a kind of design is complete, running is stablized, low energy consumption and chlorine as people
Change crystalline ammonium amount high ammonium chloride waste-water triple effect evaporation crystal system and method.
Summary of the invention
The purpose of the present invention is intended to overcome the shortcomings of the prior art, provides a kind of ammonium chloride waste-water triple effect evaporation crystallization
System and method, compared with traditional ammonium chloride waste-water evaporation and crystallization system, the consumption of the energy substantially reduces the system, obtains
Ammonium chloride crystals amounts it is high, running is stablized, and production cost is reduced.
To achieve the goals above, technical scheme is as follows:
A kind of ammonium chloride waste-water triple effect evaporation crystal system, including an effect evaporation element, two effect evaporation elements, triple effect evaporation
Unit and condensing unit；
The one effect evaporation element is imitated including one separates crystallization apparatus, an effect circulating pump and an effect heating device, and described one
The outlet of effect separation crystallization apparatus is connect with the entrance of the effect circulating pump by feed cycle pipe, the effect circulating pump
It exports and is connect with the entrance of the effect heating device by pipeline, the outlet of the effect heating device is separated with an effect
The entrance of crystallization apparatus is connected by pipeline；
The two effect evaporation element is imitated including two separates crystallization apparatus, two effect circulating pumps and two effect heating devices, and described two
The outlet of effect separation crystallization apparatus is connect with the entrance of the two effects circulating pump by feed cycle pipe, the two effects circulating pump
It exports and is connect with the entrance of the two effects heating device by pipeline, the outlet of the two effects heating device is separated with two effect
The entrance of crystallization apparatus is connected by pipeline；
The triple effect evaporation unit includes feed pump, triple effect separation crystallization apparatus, triple effect cycle pumps and triple effect heating device,
The feed pump separates crystallization apparatus with the triple effect and is connected by pipeline, the outlet of triple effect separation crystallization apparatus with it is described
The entrance of triple effect cycle pump is connected by feed cycle pipe, the outlet of the triple effect cycle pump and entering for the triple effect heating device
Mouth is connected by pipeline, and the entrance that the outlet of the triple effect heating device separates crystallization apparatus with the triple effect passes through pipeline and connects
It connects；
The condensing unit includes condenser, condensate water pot and condensate pump, the outlet of the condenser and the condensation
The entrance of water pot is connected by pipeline, and the outlet of the condensate water pot is connect with the entrance of the condensate pump by pipeline；
The outlet of the triple effect cycle pump is connected with the entrance that an effect separates crystallization apparatus by pipeline, an effect
The outlet of circulating pump is connected with the entrance that two effect separates crystallization apparatus by pipeline, and the triple effect separation crystallization apparatus passes through
Secondary steam pipeline is connect with the condenser.
Further, the effect heating device is equipped with raw steam inlet.
Further, by pipeline connection, there are two crystallisation by cooling kettles for the outlet of the two effects circulating pump, described two cold
But the outlet of crystallization kettle all passes through pipeline and is connected with suction filtration tank.
Further, the suction filtration tank is connected with mother liquor tank by pipeline, and the mother liquor tank is connected with mother by pipeline
Liquid pump, the mother liquor pump separate crystallization apparatus with two effect and are connected by pipeline.
Further, the effect heating device is also connect with pans by pipeline, and the pans and steam condense
Water pump is connected by pipeline, and steam water is recovered to boiler softened water tank, is recycled.
Further, the condenser carries out cooling down to it using cooling water, and the cooling water is from water circulating pump
Come, returns to cooling tower by the condenser.
The present invention also provides above-mentioned ammonium chloride waste-water triple effect evaporation crystal systems to carry out triple effect evaporation to ammonium chloride waste-water
The method of crystallization, comprising the following steps:
S1, ammonium chloride waste-water are transported to triple effect separation crystallization apparatus by feed pump, then enter triple effect through feed cycle pipe
Circulating pump is pumped into triple effect heating device by triple effect cycle and heats to solution, heats later solution and flows into triple effect point
Vapor-liquid separation is carried out from crystallization apparatus, obtains triple effect concentrate and triple effect steam, separating obtained triple effect steam is separated in triple effect
The top of crystallization apparatus enters condenser through secondary steam pipeline, and cooling water carries out cooling down to it in tube side and condensed
Water, usual cold in-water temperature are not higher than 35 DEG C, and leaving water temperature is not higher than 40 DEG C；
S2, the triple effect concentrate enter an effect by triple effect cycle pump through pipeline and separate crystallization apparatus, then through feeding
Circulation pipe enters an effect circulating pump, is pumped into an effect heating device by an effect circulation and is heated to triple effect concentrate, heating with
Concentrate afterwards flows into an effect separation crystallization apparatus and carries out vapor-liquid separation, obtains an effect concentrate and an effect steam, separating obtained
Heat source of the effect steam as two effect heating devices, steam condensate (SC) caused by steam by pans recycling, by
Reclamation of condensate water to boiler softened water tank is recycled steam condensate (SC) pump；
S3, an effect concentrate enter two effects by an effect circulating pump through pipeline and separate crystallization apparatus, then through feeding
Circulation pipe enters two effect circulating pumps, and You Erxiao circulating pump is sent to two effect heating devices and heats to an effect concentrate, heats
Later concentrate is flowed into two effects separation crystallization apparatus and carries out vapor-liquid separation, obtains two effect concentrates and two effect steam, separation
Heat source of the resulting two effects steam as triple effect heating device；
S4, the two effect concentrate reach crystallisation by cooling kettle by two effect circulating pumps through pipeline, enter after being cooled to room temperature
Suction filtration tank is separated, and ammonia chloride crystal is obtained, and the mother liquor separated returns two effects separation knot by mother liquor pump through pipeline
Brilliant device evaporative crystallization again.
Further, the condensation that the effect heating device, two effect heating devices, triple effect heating device and condenser generate
Water is discharged by condensate pump.
In the inventive solutions, on the one hand, pans are increased between an effect heating device and boiler water softening tank,
For storing the steam condensate (SC) that is formed after recycling saturated vapor heating, and pump by steam condensate (SC) that back into boiler soft
Water pot, boiler of feeding are recycled；On the other hand, the present invention two effect separation crystallization apparatus and suction filtration tank between increase two it is cold
But crystallization kettle is cooled to the temperature of the former concentrated solution after two effect separation crystallization apparatus often by original 100 DEG C or so
Temperature, this makes concentrate be easier to filter when passing through suction filtration tank, therefore the ammonium chloride crystals amount increase obtained, output
It greatly increases.
Compared with prior art, the invention has the following advantages:
(1) ammonium chloride waste-water triple effect evaporation crystal system of the present invention is a complete large-scale system, with good antiscale property
With anticlogging advantage and design is scientific and reasonable, construct complete, running is stablized, and is realized at 9 tons of day crystallization content and day
90 tons of reason amount of ammonium chloride evaporative crystallization technique.
(2) ammonium chloride waste-water triple effect evaporation crystal system of the present invention is compared with traditional ammonium chloride waste-water crystal system,
The steam condensate (SC) formed after saturated vapor heating can recycle boiler of feeding recycling, and at the same time partial heat has been recycled,
Make boiler reduces 22% with oil mass on the basis of the original, and water consumption has dropped 83% on the basis of the original, the energy
Consumption substantially reduces.
(3) ammonium chloride waste-water triple effect evaporation crystal system of the present invention is compared with traditional ammonium chloride waste-water crystal system,
Two crystallisation by cooling kettles are increased between two effect separation crystallization apparatus and suction filtration tank, are made after two effect separation crystallization apparatus
The temperature of former concentrated solution be cooled to room temperature by original 100 DEG C or so, this holds that concentrate more when passing through suction filtration tank
Easily filtering avoids the loss of ammonium chloride crystals to improve the efficiency of crystallization content and evaporative crystallization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ammonium chloride waste-water triple effect evaporation crystal system of the present invention.
Description of symbols: 01- mono- imitates heating device, the effect separation of 02- mono- crystallization apparatus, 03- mono- and imitates circulating pump, 04- bis-
It imitates heating device, the effect separation of 05- bis- crystallization apparatus, 06- bis- and imitates circulating pump, 07- feed pump, 08- triple effect heating device, 09- tri-
Effect separation crystallization apparatus, 10- triple effect cycle pump, 11- condenser, 12- condensate water pot, 13- condensate pump, 14- pans, 15-
Steam condensate (SC) pump, 16- vacuum pump, 171- crystallisation by cooling kettle, 172- crystallisation by cooling kettle, 18- coiled pipe cooler, 191- are filtered
Slot, 192- suction filtration tank, 20- mother liquor tank, 21- filter vacuum pump, 22- mother liquor pump and raw steam inlet -23.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, those skilled in the art are more preferable
Understanding technical solution of the present invention, With reference to embodiment and referring to attached drawing, the present invention is described in more detail.
It should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the invention.In addition, in the following description, omitting
To descriptions of well-known structures and technologies, so as not to unnecessarily obscure the concept of the present invention.
Embodiment 1, ammonium chloride waste-water triple effect evaporation crystal system of the present invention
It please refers to shown in attached drawing 1, ammonium chloride waste-water triple effect evaporation crystal system of the present invention, including effect an evaporation element, two
Imitate evaporation element, triple effect evaporation unit and condensing unit:
The one effect evaporation element includes that an effect separation crystallization apparatus 02, one imitates circulating pump 03 and an effect heating device 01,
The outlet of one effect separation crystallization apparatus 02 is connect with the entrance of an effect circulating pump 03 by feed cycle pipe, an effect circulating pump 03
It exports and is connect with the entrance of an effect heating device 01 by pipeline, an effect heating device 01 is also connected with raw steam inlet 23, an effect
The outlet of heating device 01 separates the entrance of crystallization apparatus 02 with an effect by pipeline connection, one imitate heating device 01 also with centre
Tank 14 is connected by pipeline, and pans 14 are connect with steam condensate (SC) pump 15 by pipeline, and steam condensate (SC) pump 15 is cold by steam
Condensate is recovered to boiler softened water tank, is recycled；
The two effects evaporation element includes that two effect separation crystallization apparatus 05, two imitate circulating pump 06 and two effect heating devices 04,
The outlet of two effect separation crystallization apparatus 05 is connect with the entrance of two effect circulating pumps 06 by feed cycle pipe, two effect circulating pumps 06
It exports and is connect with the entrance of two effect heating devices 04 by pipeline, the outlet of two effect heating devices 04 separates crystallization apparatus with two effects
05 entrance is connected by pipeline, and the outlet of two effect circulating pumps 06 and crystallisation by cooling kettle 171 and crystallisation by cooling kettle 172 pass through pipeline
Connection, the outlet of crystallisation by cooling kettle 171 and crystallisation by cooling kettle 172 are all connect with suction filtration tank 191 and suction filtration tank 192 by pipeline,
Suction filtration tank 191 and suction filtration tank 192 are connected with mother liquor tank 20 by pipeline, and mother liquor tank 20 is connected with mother liquor pump 22 by pipeline, female
Liquid pump 22 separates crystallization apparatus 05 with two effects and is connected by pipeline；
The triple effect evaporation unit includes that feed pump 07, triple effect separation crystallization apparatus 09, triple effect cycle pump 10 and triple effect add
Thermal 08, feed pump 07 are separated with triple effect and are connected between crystallization apparatus 09 by pipeline, and triple effect separates going out for crystallization apparatus 09
Mouth is connect with the entrance of triple effect cycle pump 10 by feed cycle pipe, outlet and the triple effect heating device 08 of triple effect cycle pump 10
Entrance is connected by pipeline, and the entrance that the outlet of triple effect heating device 08 separates crystallization apparatus 09 with triple effect is connected by pipeline；
The condensing unit includes condenser 11, condensate water pot 12 and condensate pump 13, the outlet and condensation of condenser 11
The entrance of water pot 12 is connected by pipeline, and the outlet of condensate water pot 12 is connect with the entrance of condensate pump 13 by pipeline；
The outlet of the triple effect cycle pump 10 is connected with the entrance that an effect separates crystallization apparatus 02 by pipeline, an effect circulation
The outlet of pump 03 is connected with the entrance that two effects separate crystallization apparatus 05 by pipeline, and triple effect separation crystallization apparatus 09 passes through secondary steaming
Steam pipe road is connect with condenser 11.
Embodiment 2 carries out triple effect evaporation to ammonium chloride waste-water using ammonium chloride waste-water triple effect evaporation crystal system of the present invention
The method of crystallization
The side of triple effect evaporation crystallization is carried out to ammonium chloride waste-water using ammonium chloride waste-water triple effect evaporation crystal system of the present invention
Method, comprising the following steps:
S1, the ammonium chloride waste-water that mass concentration is 10% are transported to triple effect by feed pump 07 and separate crystallization apparatus 09, then
Enter triple effect cycle pump 10 through feed cycle pipe, triple effect heating device 08 is sent to by triple effect cycle pump 10, solution is added
Heat heats later solution and flows into the triple effect separation progress vapor-liquid separation of crystallization apparatus 09, obtains triple effect concentrate and triple effect steam,
Separating obtained triple effect steam enters condenser 11, condenser through secondary steam pipeline at the top of triple effect separation crystallization apparatus 09
11 lower section is also connected with condensate water pot 12 and condensate pump 13, and cooling water carries out cooling down to it in tube side, cooling water from
Water circulating pump comes, and returns to cooling tower by the condenser, usual cold in-water temperature is not higher than 35 DEG C, and leaving water temperature is not high
In 40 DEG C；
S2, the triple effect concentrate enter an effect by triple effect cycle pump 10 through pipeline and separate crystallization apparatus 02, then pass through
Feed cycle pipe enters an effect circulating pump 03, and You Yixiao circulating pump 03 is sent into an effect heating device 01 and is added to triple effect concentrate
Heat heats later concentrate and flows into an effect separation progress vapor-liquid separation of crystallization apparatus 02, obtains an effect concentrate and an effect is steamed
Vapour, separating obtained one imitates heat source of the steam as two effect heating devices 04, and steam condensate (SC) caused by steam passes through
Pans 14 recycle, and by steam condensate (SC) pump 15 by reclamation of condensate water to boiler softened water tank, are recycled；
S3, an effect concentrate enter two effects by an effect circulating pump 03 through pipeline and separate crystallization apparatus 05, then pass through
Feed cycle pipe enter second effect circulating pump 06, You Erxiao circulating pump 06 be sent to two effect heating devices 04 to one effect concentrate into
Row heating, heat later concentrate be flowed into two effects separation crystallization apparatus 05 carry out vapor-liquid separation, obtain two effect concentrates and
The mass concentration of two effect steam, two effect concentrates is 70%, separating obtained two effect steam adding as triple effect heating device 08
Heat source；
S4, the two effect concentrate reach crystallisation by cooling kettle 171 and crystallisation by cooling kettle by two effect circulating pumps 06 through pipeline
172, enter suction filtration tank 191 after being cooled to room temperature and suction filtration tank 192 is separated, it is brilliant to obtain the ammonium chloride that mass concentration is 70%
Body, the mother liquor separated return two effects and separate crystallization apparatus 05 again through pipeline by filtering vacuum pump 21 and mother liquor pump 22
It is evaporated crystallization.
The one effect heating device 01, two imitates the condensation that heating device 04, triple effect heating device 08 and condenser 11 generate
Water is continuously discharged by a condensate pump 13.
The triple effect heating device of ammonium chloride waste-water triple effect evaporation crystal system of the present invention is all designed to good antiscale property, anti-clogging
The evaporated crystallization device of type, to guarantee that vaporising device can continue to run.In addition, ammonium chloride triple effect evaporation crystal system of the present invention
Pans are increased between an effect heating device and boiler water softening tank, for storing the steaming formed after recycling saturated vapor heating
Vapour condensed water, and boiler water softening tank is backed by steam condensate (SC) pump, boiler of feeding is recycled, and at the same time recycling
Partial heat, make boiler reduces 22% with oil mass on the basis of the original, and water consumption has dropped on the basis of the original
83%；Still further aspect, the present invention two effect separation crystallization apparatus and suction filtration tank between increases two crystallisation by cooling kettles, make through
The temperature for the former concentrated solution crossed after two effect separation crystallization apparatus is cooled to room temperature by original 100 DEG C or so, this makes concentrate
It is easier the ammonium chloride crystals amount for filtering, therefore obtaining when passing through suction filtration tank to increase, treating capacity also greatly increases, and realizes
Day 9 tons and 90 tons of day output of crystallization content of ammonium chloride evaporative crystallization technique.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (7)
1. a kind of ammonium chloride waste-water triple effect evaporation crystal system, which is characterized in that single including an effect evaporation element, two effect evaporations
Member, triple effect evaporation unit and condenser:
The one effect evaporation element includes an effect separation crystallization apparatus, an effect circulating pump and an effect heating device, an effect point
It is connect with the entrance of the effect circulating pump by feed cycle pipe from the outlet of crystallization apparatus, the outlet of the effect circulating pump
It is connect with the entrance of the effect heating device by pipeline, the outlet of the effect heating device separates crystallization with an effect
The entrance of device is connected by pipeline；
The two effects evaporation element includes two effect separation crystallization apparatus, two effect circulating pumps and two effect heating devices, two effect point
It is connect with the entrance of the two effects circulating pump by feed cycle pipe from the outlet of crystallization apparatus, the outlet of the two effects circulating pump
It is connect with the entrance of the two effects heating device by pipeline, the outlet of the two effects heating device separates crystallization with two effect
The entrance of device is connected by pipeline；
The triple effect evaporation unit includes feed pump, triple effect separation crystallization apparatus, triple effect cycle pumps and triple effect heating device, described
Feed pump separates crystallization apparatus with third effect and is connected by pipeline, the outlet and described three of the triple effect separation crystallization apparatus
The entrance of effect circulating pump is connected by feed cycle pipe, the outlet of the triple effect cycle pump and the entrance of the triple effect heating device
It is connected by pipeline, the entrance that the outlet of the triple effect heating device separates crystallization apparatus with the triple effect is connected by pipeline；
The condensing unit includes condenser, condensate water pot and condensate pump, the outlet of the condenser and the condensate water pot
Entrance by pipeline connect, the outlet of the condensate water pot is connect with the entrance of the condensate pump by pipeline；
The outlet of the triple effect cycle pump is connected with the entrance that an effect separates crystallization apparatus by pipeline, the effect circulation
The outlet of pump is connected with the entrance that two effect separates crystallization apparatus by pipeline, and the triple effect separation crystallization apparatus passes through secondary
Jet chimney is connect with the condenser.
2. ammonium chloride waste-water triple effect evaporation crystal system as described in claim 1, which is characterized in that the effect heating device is set
There is raw steam inlet.
3. ammonium chloride waste-water triple effect evaporation crystal system as described in claim 1, which is characterized in that the two effects circulating pump goes out
There are two crystallisation by cooling kettles by pipeline connection for mouth, and the outlet of described two crystallisation by cooling kettles all passes through pipeline and is connected with suction filtration
Slot.
4. ammonium chloride waste-water triple effect evaporation crystal system as claimed in claim 3, which is characterized in that the suction filtration tank passes through pipeline
It is connected with mother liquor tank, the mother liquor tank is connected with mother liquor by pipeline and pumps, and the mother liquor pump separates crystallization apparatus with two effect
It is connected by pipeline.
5. ammonium chloride waste-water triple effect evaporation crystal system as described in claim 1, which is characterized in that the effect heating device is also
It is connect with pans by pipeline, the pans are pumped with steam condensate (SC) and connect by pipeline.
6. a kind of ammonium chloride waste-water triple effect evaporation method for crystallising, which is characterized in that utilize ammonium chloride waste-water as described in claim 1
Triple effect evaporation crystal system carries out triple effect evaporation crystallization to ammonium chloride waste-water, comprising the following steps:
S1, ammonium chloride waste-water are transported to triple effect separation crystallization apparatus by feed pump, then enter triple effect cycle through feed cycle pipe
Pump, is pumped into triple effect heating device by triple effect cycle and heats to solution, heats later solution and flows into triple effect separation knot
Brilliant device carries out vapor-liquid separation, obtains triple effect concentrate and triple effect steam, and separating obtained triple effect steam is separated in triple effect and crystallized
The top of device enters condenser through secondary steam pipeline, and cooling water carries out cooling down to it in tube side；
S2, the triple effect concentrate enter an effect by triple effect cycle pump through pipeline and separate crystallization apparatus, then through feed cycle
Pipe enters an effect circulating pump, is pumped into an effect heating device by an effect circulation and heats to triple effect concentrate, heats later
Concentrate flow into one effect separation crystallization apparatus carry out vapor-liquid separation, obtain an effect concentrate and one effect steam, separating obtained one
Imitate heat source of the steam as two effect heating devices；
S3, an effect concentrate enter an effect by an effect circulating pump through pipeline and separate crystallization apparatus, then through feed cycle
Pipe enters two effect circulating pumps, and You Erxiao circulating pump is sent to two effect heating devices and heats to an effect concentrate, after heating
Concentrate be flowed into two effects separation crystallization apparatus carry out vapor-liquid separation, obtain two effect concentrates and two effect steam, it is separating obtained
Two heat sources of the effect steam as triple effect heating device；
S4, the two effect concentrate reach crystallisation by cooling kettle by an effect circulating pump through pipeline, enter after being cooled to room temperature and filter
Slot is separated, and ammonia chloride crystal is obtained, and the mother liquor separated returns two effects separation crystallization dress by mother liquor pump through pipeline
Set evaporative crystallization again.
7. ammonium chloride waste-water triple effect evaporation method for crystallising as claimed in claim 6, which is characterized in that the effect heating device,
The condensed water that two effect heating devices, triple effect heating device and condenser generate is discharged by condensate pump.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023222433A1 (en) | 2022-05-17 | 2023-11-23 | Basf Se | Process for preparing ammonium chloride |
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| CN207451655U (en) * | 2017-09-23 | 2018-06-05 | 苏圣科技（无锡）有限公司 | A kind of chloride containing calcium waste water evaporative crystallization processing system |
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