CN206407915U - The device of high-purity ammoniacal liquor is produced from ammonia nitrogen waste water - Google Patents
The device of high-purity ammoniacal liquor is produced from ammonia nitrogen waste water Download PDFInfo
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- CN206407915U CN206407915U CN201720028521.7U CN201720028521U CN206407915U CN 206407915 U CN206407915 U CN 206407915U CN 201720028521 U CN201720028521 U CN 201720028521U CN 206407915 U CN206407915 U CN 206407915U
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Abstract
The utility model belongs to rectifying device field, and it is a kind of device that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water.Recovery ammonia tower uses integral structure, bottom-up at least to include four functional areas such as stripping section, washing section, cyclic absorption section, clean-up stage；Complete the processes such as absorption and the tail gas clean-up of the mixing gas phase of washing, ammonia and the water of the mixing gas phase of stripping processing, ammonia and the water of ammonia nitrogen waste water simultaneously in a described recovery ammonia tower, apparatus structure is compact, recovery ammoniacal liquor impurity is low, purity is high, it is prevented effectively from and secondary pollution is caused to atmospheric environment, the utility model has significant practicality and economic benefit.
Description
Technical field
The utility model belongs to rectifying device field, and it is a kind of device that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water.
Background technology
Ammonia nitrogen is a kind of pollutant for having to water environment and having a strong impact on, and can make body eutrophication, promotes algae reproduction, greatly
The oxygen that amount consumption is dissolved in water, causes smelly, the deteriorating water quality of water body nigrescence, and the existence to aquatic animals and plants is impacted.
On ammonia-nitrogen sewage, the existing discharge standard of China is《Integrated wastewater discharge standard》GB 8978-1996, the standard is according to waste water
Ammonia nitrogen discharge standard is divided into two-stage by the difference in discharge waters：Primary standard ammonia nitrogen concentration of emission is less than or equal to 15mg/L, two
Level standard ammonia nitrogen concentration of emission is less than or equal to 25mg/L.
High-concentration wastewater containing ammonia nitrogen processing be always wastewater treatment industry in problem, be widely present in oil, chemical industry,
The production fields such as pharmacy, electronics, process hides, and if high ammonia-nitrogen wastewater is directly discharged into water body without processing, environment can be caused
Serious harm.Therefore, the improvement of high-concentration ammonia nitrogenous wastewater turns into urgent problem to be solved in waste water treatment industry.
The processing of ammonia nitrogen waste water is divided into physical-chemical process and the major class of bio-denitrification technology two.
Biological denitrificaion method refers to ammonia nitrogen in waste water under various microbial actions, a series of by nitrification, nitrosation etc.
Reaction ultimately generates nitrogen, so as to reach the mesh of processing.But the technological process is complicated, processing equipment is more, often needs additional carbon, energy
Consumption is big, and cost is high.
The conventional physical-chemical process of denitrogenation have break point chlorination, chemical precipitation method, ion-exchange, blow-off method, liquid-film method,
Electroosmose process and catalytic wet air oxidation etc..With respect to other several physical-chemical processes, steam blow-off method is that one kind is relatively simple, had
The method of effect, without introducing other additives, and ammonia nitrogen removal frank is higher, can also reclaim the ammonia in waste water.
At present, the processing requirement ammonia resource to high-concentration wastewater containing ammonia nitrogen will be recycled, to reach economic benefit and ring
The unification of border benefit, but existing steam blow-off method ammonia recovery system, ammonia recovery are relatively low, reclaim ammoniacal liquor and easily carry other miscellaneous secretly
Matter, tail gas easily causes secondary pollution without clean-up stage to atmospheric environment.
The content of the invention
The purpose of this utility model is to provide a kind of device for producing high-purity ammoniacal liquor from ammonia nitrogen waste water.Recovery ammonia tower
It is bottom-up at least to include four functional areas such as stripping section, washing section, cyclic absorption section, clean-up stage using integral structure；
Washing, ammonia and the water of the mixing gas phase of stripping processing, ammonia and the water of ammonia nitrogen waste water are completed in a described recovery ammonia tower simultaneously
Mixing gas phase absorption and the process such as tail gas clean-up, apparatus structure is compact, reclaims that ammoniacal liquor impurity is low, purity is high, is prevented effectively from
Secondary pollution is caused to atmospheric environment, the utility model has significant practicality and economic benefit.
The utility model, which provides a kind of device that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water, includes recovery ammonia tower body, adopts
With integral structure, it is bottom-up at least include four functional areas such as stripping section, washing section, cyclic absorption section, clean-up stage and
Pipeline, the annexation of four described functional areas is as follows：
Stripping section is located at recovery ammonia tower bottom, and stripped vapor enters recovery ammonia tower tube line and is connected to stripping section bottom, preheater
Cold side stream outlet is connected to stripping section top, and recovery ammonia tower tower reactor liquid outlet is connected with kettle liquid pump intake, and kettle liquid is pumped out
Mouth is connected with preheater hot side material inlet；
Washing section is located above stripping section；
Cyclic absorption section is located above washing section, and liquid header is set between washing section and cyclic absorption section, and liquid is received
Storage is connected with absorbing liquid circulating pump, and absorbing liquid circulating-pump outlet is connected with washing section top and circulation fluid cooler respectively
Connect, circulation fluid cooler outlet is connected with cyclic absorption section top and recovery ammoniacal liquor discharging pipeline respectively；
Clean-up stage is located at cyclic absorption section top, and desalination water inlet is connected with clean-up stage top, connected at the top of clean-up stage
Fixed gas is exported.
The device of the production high-purity ammoniacal liquor provided by the utility model, recovery ammonia tower tower reactor liquid outlet can connect sudden strain of a muscle
Steaming pot, flash tank bottom liquid outlet is connected with kettle liquid pump, the outlet of flash tank upper gaseous phase and steam jet ejector air entry phase
Connection, stripped vapor is connected to steam jet ejector power injection gas entrance, and steam jet ejector outlet is connected to stripping section bottom.
The device of the production high-purity ammoniacal liquor provided by the utility model, recovery ammonia tower four described functional areas with
Outside, demisting section can also be set up in tower top, it is to avoid desalted water is taken out of by fixed gas, reduces desalination water consumption.
A kind of process that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water that the utility model is provided includes：
Recovery ammonia tower uses integral structure, bottom-up at least to include stripping section, washing section, cyclic absorption section, purification
Four functional areas such as section；Complete the mixing of stripping processing, ammonia and the water of ammonia nitrogen waste water simultaneously in a described recovery ammonia tower
The process such as the absorption of the mixing gas phase of the washing of gas phase, ammonia and water and tail gas clean-up；The effect of four described functional areas is as follows：
Ammonia nitrogen waste water and the laggard stripping section top of recovery ammonia tower tower reactor liquid heat exchange after described stripping section, adjustment pH value
The waste water that ammonia in portion, waste water is stripped off by the live steam that tower reactor is passed through, risen to after washing section, tower reactor discharge deamination；
The mixing gas phase of described washing section, ammonia and water is lowered by liquid scrubbing, imurity-removal, the ammonia and water after washing
Gaseous mixture mutually continues to rise, into cyclic absorption section；
The mixing gas phase of described cyclic absorption section, ammonia and water is absorbed by circulation fluid, absorbs the ammoniacal liquor part after heating
Enter washing section top, wash ascending vapor, another part enters ammoniacal liquor cooler.An ammoniacal liquor part after cooling is used as ammoniacal liquor product
Go out device, another part returns to cyclic absorption section top, continues cycling through the mixing gas phase for absorbing ammonia and water from washing section；
Described clean-up stage, the mixing gas phase of most ammonia and water is all absorbed by circulation fluid after cyclic absorption section,
But fixed gas can not be absorbed by circulation fluid in charging, and as fixed gas can take a small amount of ammonia and steam out of, the effect of clean-up stage is exactly
Desalted water is gone to absorb the ammonia taken out of with fixed gas using what is added from tower top so as to be only fixed gas in tower top discharge fixed gas
Steam with saturation, without ammonia.The presence of clean-up stage, traditional ammonia single-stage condensed absorbent or single-stage ammonia circulation are absorbed and become
Additional one section of fixed gas desalination Water warfare absorption process is absorbed for one-level ammonia circulation, the ammonia of common process had both been avoided with not
Solidifying gas overflows the secondary pollution caused, also improves the rate of recovery of ammonia.
The device of the production high-purity ammoniacal liquor provided by the utility model, through stripping section, washing section, cyclic absorption section, net
Change after four sections of processing such as section, high-purity ammoniacal liquor is obtained from ammoniacal liquor cooler outlet.
The device of the production high-purity ammoniacal liquor provided by the utility model, recovery ammonia tower is preferred to use direct steam heating,
Heat exchanger can also be passed through（Conventional）, it is connected in recovery ammonia tower and heat is provided.
The device of the production high-purity ammoniacal liquor provided by the utility model, recovery ammonia tower tower reactor can use steam jet ejector
The heat of tower reactor waste discharge is reclaimed, while the ammonia density in waste discharge can also be reduced further, ammonia recovery is improved.
The device of the production high-purity ammoniacal liquor provided relative to Conventional processing methods, the utility model, at described one
The mixing gas phase of washing, ammonia and the water of the mixing gas phase of stripping processing, ammonia and the water of ammonia nitrogen waste water is completed in recovery ammonia tower simultaneously
Absorption and the process such as tail gas clean-up, not only with stripping section, cyclic absorption section, be additionally provided with washing section and clean-up stage so that return
Receipts ammoniacal liquor impurity is low, purity is high, and ion concentration and other impurity contents are substantially reduced, and are prevented effectively from and are caused secondary to atmospheric environment
Pollution.The apparatus structure for the production high-purity ammoniacal liquor that the utility model is provided is compact, with significant practicality and economic benefit.
Brief description of the drawings
Fig. 1 is a kind of general flow chart for device that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water that the utility model is provided.
Fig. 2 is a kind of deformation of general flow chart shown in Fig. 1, in tower reactor there is provided steam jet ejector, tower top are provided with demisting
Section.
Embodiment
The utility model be explained in detail with reference to the accompanying drawings it is as follows, but for illustrative purposes only rather than limitation the utility model.
Embodiment 1：
The utility model uses integral structure, including recovery ammonia tower（T101）Body, recovery ammonia tower（T101）From it is lower to
On at least include stripping section（S101）, washing section（S102）, cyclic absorption section（S103）With clean-up stage（S104）Deng four functions
Area and its pipeline for connection.
As shown in figure 1, adjustment pH value（Typical pH value range is 9.5~11.5）Ammonia nitrogen waste water 1 afterwards and recovery ammonia tower
Tower reactor liquid 4 exchanges heat, at the top of the laggard stripping section S101 of the ammonia nitrogen waste water 2 after preheating, the ammonia in waste water by tower reactor be passed through it is fresh
Steam 3 is stripped off, rises to washing section S102.Waste water 4 after tower reactor discharge deamination removes kettle liquid pump P101, logistics 4 and ammonia nitrogen
Waste water 1 goes out device after exchanging heat.
In washing section, the mixing gas phase of ammonia and water be lowered by liquid 7 wash, imurity-removal, ammonia and water after washing it is mixed
Close gas phase to continue to rise, into cyclic absorption section S103.
In cyclic absorption section, the mixing gas phase of ammonia and water is absorbed by circulation fluid 10.It is arranged on washing section and cyclic absorption section
Between liquid header C101 by absorb heating after ammoniacal liquor 6 import absorbing liquid circulating pump P102.Absorbing liquid circulating-pump outlet
Liquid is divided into two parts, and a part of liquid 7 enters washing section top, washs the ascending vapor from stripping section, and another part enters ammonia
Water cooler E102.9 points of ammoniacal liquor after cooling is two parts, and a part goes out device, another part conduct as ammoniacal liquor product 11
Circulating absorption solution 10 returns to cyclic absorption section top, continues cycling through the mixing gas phase for absorbing ammonia and water from washing section；
Desalted water 12 is added on clean-up stage top and absorbs the ammonia taken out of with fixed gas so that in tower top discharge fixed gas 13
Only the steam of fixed gas and saturation, without ammonia.
The device of the production high-purity ammoniacal liquor provided by the utility model, through stripping section, washing section, cyclic absorption section, net
Change after four sections of processing such as section, high-purity ammoniacal liquor 11 is obtained from ammoniacal liquor cooler outlet.
Embodiment 2：
As shown in Fig. 2 on the device basic shown in Fig. 1, being additionally arranged flash tank V101 and steam jet ejector J101.Ammonia is returned
Receive tower tower reactor liquid 3 and be introduced into flash tank, flash tank bottom liquid 14 enters kettle liquid pump P101 entrances.Flash tank upper gaseous phase 15 is entered
Steam jet ejector air entry, stripped vapor 3 is connected to steam jet ejector power injection gas entrance, steam jet ejector exit gas 16
Enter recovery ammonia tower stripping section bottom.
The device of the production high-purity ammoniacal liquor provided by the utility model, recovery ammonia tower described stripping section, washing section,
Beyond cyclic absorption section, four functional areas of clean-up stage, demisting section can also be set up in tower top（S105）, it is to avoid desalted water is not coagulated
Gas is taken out of, reduces desalination water consumption.
The device of the production high-purity ammoniacal liquor provided by the utility model, the useless of 12000mg/L is up to for ammonia nitrogen concentration
Water, processed waste water ammonia density is less than 15mg/L, and high purity ammonia water concentration is up to 25%（Mass percent）More than.
A kind of apparatus structure that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water that the utility model is provided is simple, be easy to real
Apply, with significant practicality and economic benefit.Illustrated in conjunction with the embodiments, the personnel of association area completely can root
The method provided according to the utility model suitably change or change with combining, to realize the technology.It should be strongly noted that
All these changes similar by the technological process progress provided the utility model are changed with reconfiguring, to ability
It is it will be apparent that being considered as in spirit of the present utility model, scope and content for field technique personnel.
Claims (3)
1. a kind of device that high-purity ammoniacal liquor is produced from ammonia nitrogen waste water, it is characterised in that including recovery ammonia tower（T101）Body,
Recovery ammonia tower（T101）It is bottom-up at least to include stripping section（S101）, washing section（S102）, cyclic absorption section（S103）With it is net
Change section（S104）；
Stripping section（S101）Positioned at recovery ammonia tower（T101）Bottom, stripped vapor enters recovery ammonia tower tube line connection stripping section（S101）
Bottom, preheater（E101）Cold side stream outlet is connected to stripping section（S101）Top, recovery ammonia tower（T101）Tower reactor liquid discharge
Mouth and kettle liquid pump（P101）Entrance is connected, kettle liquid pump（P101）Outlet and preheater（E101）Hot side material inlet is connected；
Washing section（S102）Positioned at stripping section（S101）Top；
Cyclic absorption section（S103）Positioned at washing section（S102）Top, washing section（S102）With cyclic absorption section（S103）Between set
Put liquid header（C101）, liquid header（C101）With absorbing liquid circulating pump（P102）It is connected, absorbing liquid circulating pump
（P102）Outlet respectively with washing section（S102）Top and circulation fluid cooler（E102）It is connected, circulation fluid cooler（E102）
Outlet respectively with cyclic absorption section（S103）Top is connected with ammoniacal liquor discharging pipeline is reclaimed；
Clean-up stage（S104）Positioned at cyclic absorption section（S103）Top, desalination water inlet and clean-up stage（S103）Top is connected,
Clean-up stage（S103）Top connection fixed gas outlet.
2. according to the device of the production high-purity ammoniacal liquor described in claim 1, it is characterised in that：Recovery ammonia tower tower reactor liquid outlet
Connect flash tank（V101）, flash tank（V101）Bottom liquid outlet and kettle liquid pump（P101）It is connected, flash tank（V101）On
Portion's gaseous phase outlet and steam jet ejector（J101）Air entry is connected, steam jet ejector（J101）Outlet is connected to stripping section bottom
Portion.
3. according to the device of the production high-purity ammoniacal liquor described in claim 1, it is characterised in that：In recovery ammonia tower（T101）Tower top
Set up demisting section（S105）, it is to avoid desalted water is taken out of by fixed gas, reduces desalination water consumption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720028521.7U CN206407915U (en) | 2017-01-11 | 2017-01-11 | The device of high-purity ammoniacal liquor is produced from ammonia nitrogen waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720028521.7U CN206407915U (en) | 2017-01-11 | 2017-01-11 | The device of high-purity ammoniacal liquor is produced from ammonia nitrogen waste water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341418A (en) * | 2018-03-05 | 2018-07-31 | 安徽国星生物化学有限公司 | A kind of high ammonia-nitrogen wastewater ammonia recovery system |
| CN112794339A (en) * | 2020-12-25 | 2021-05-14 | 中国科学院城市环境研究所 | Method and device for recovering ammonia in liquid |
| CN112794341A (en) * | 2021-02-11 | 2021-05-14 | 新疆天业汇合新材料有限公司 | Method and device for twice recovering ammonia in ammonia-containing non-condensable gas in coal gasification process |
| CN114873669A (en) * | 2022-01-26 | 2022-08-09 | 锦益创典(天津)科技有限责任公司 | Biogas slurry decarburization and deamination method and system |
-
2017
- 2017-01-11 CN CN201720028521.7U patent/CN206407915U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341418A (en) * | 2018-03-05 | 2018-07-31 | 安徽国星生物化学有限公司 | A kind of high ammonia-nitrogen wastewater ammonia recovery system |
| CN112794339A (en) * | 2020-12-25 | 2021-05-14 | 中国科学院城市环境研究所 | Method and device for recovering ammonia in liquid |
| CN112794341A (en) * | 2021-02-11 | 2021-05-14 | 新疆天业汇合新材料有限公司 | Method and device for twice recovering ammonia in ammonia-containing non-condensable gas in coal gasification process |
| CN112794341B (en) * | 2021-02-11 | 2024-06-07 | 新疆天业汇合新材料有限公司 | Method and device for recycling ammonia in ammonia-containing noncondensable gas in coal gasification process twice |
| CN114873669A (en) * | 2022-01-26 | 2022-08-09 | 锦益创典(天津)科技有限责任公司 | Biogas slurry decarburization and deamination method and system |
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