CN208008471U - A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration - Google Patents
A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration Download PDFInfo
- Publication number
- CN208008471U CN208008471U CN201820372853.1U CN201820372853U CN208008471U CN 208008471 U CN208008471 U CN 208008471U CN 201820372853 U CN201820372853 U CN 201820372853U CN 208008471 U CN208008471 U CN 208008471U
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- China
- Prior art keywords
- ammonia
- concentrated
- denitration
- liquor
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 190
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 94
- 238000004821 distillation Methods 0.000 title claims abstract description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 91
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000009835 boiling Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 flue gas nitrogen oxides Chemical class 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration, it includes concentrated ammonia liquor holding vessel (1), the output end of the concentrated ammonia liquor holding vessel (1) is connected to concentrated ammonia liquor preheater (2), the output port one of the concentrated ammonia liquor preheater (2) is connected with weak aqua ammonia cooler (5), the output port two of the concentrated ammonia liquor preheater (2) is connect with ammonia still (6), the weak aqua ammonia cooler (5) is connected to weak aqua ammonia holding vessel (7), and the tower top of the ammonia still (6) is equipped with tower top dephlegmator (10).The energy-saving special ammonia distillation ammonia-preparing device of denitration carries out ammonia preparation using rectifying column method, and concentrated ammonia liquor is sent into tower, the heat heated by heater, so that ammonium hydroxide is evaporated, by tower internals, ammonia is made constantly to concentrate, ammonia purity is improved, the ammonia of final overhead extraction high concentration is used for denitration；Using rectifying column, it is possible to provide larger ammonia yield, adjustable range are larger.Configured with preheater, the heat of recyclable system plays energy-efficient effect.
Description
Technical field
The utility model belongs to environmental technology field, is exactly specifically to be related to a kind of special ammonia distillation system of energy-saving denitration
Ammonia device.
Background technology
Garbage power plant denitrating flue gas gradually upgrades to SNCR+SCR by former SNCR at present, and when SCR denitration needs to use reduction
Agent " ammonia ".The prior art mostly uses greatly ammonium hydroxide evaporation hybrid technology or urea pyrolysis technology.
Ammonium hydroxide, which evaporates hybrid technology, to be delivered in steam heater by dilution air using air, and air is heated,
Hot-air after heating is delivered to evaporation mixer, and twin spray gun is arranged in evaporation mixer, will by compressed air
Ammonia atomization, the ammonium hydroxide after atomization are mixed with hot-air, ammonium hydroxide are evaporated ammonia, final ammonia sky gaseous mixture is as denitration with also
Former agent uses.Urea pyrolysis technology is then to use 500 DEG C or more hot winds that urea liquid is pyrolyzed as ammonia, and high temperature electrical heating need to be arranged
Device, atomizing lance, due to pyrolysis temperature height, whole system need to use high-temperature alloy steel, need to there is many places thermometric control point.
But there are following shortcomings for existing ammonium hydroxide evaporation hybrid technology：1) ammonium hydroxide evaporation mixing is suitable for small flow ammonia
Gas, or single use for covering denitrating system are not suitable for cover more and share.2) due to heating air, the heat transfer coefficient of air side is very low,
Need larger heat exchange area, equipment can be bigger.3) twin spray gun need to be used, the compression that need in addition draw atomization is empty
Gas need to consume more compressed air.4) each Denitration in Boiler is all that a plurality of line is parallel, need to put into more set evaporation hybrid systems, whole
Body project investment is higher.
There are following shortcomings for existing urea pyrolytic technique：1) this system is suitble to the pyrolysis ammonia of small flow, is not suitable for
It is shared in more sets.2) due to heating air, the heat transfer coefficient of air side is very low, needs larger heat exchange area, equipment that can compare
Greatly.3) twin spray gun is used, due to being urea liquid, spray gun is easy to be blocked.4) pyrolytic process is to temperature control requirement
Height often occurs resolving into condensation polymer in operational process, and occluding device, need to often stop cleaning.5) due to hot wind operation temperature
Height, whole system need to use high-temperature alloy steel, whole investment higher.
Utility model content
The purpose of this utility model is lacked aiming at existing above-mentioned technology during existing garbage power plant denitrating flue gas
It falls into, a kind of special ammonia distillation ammonia-preparing device of energy-saving denitration is provided, ammonia preparation is carried out using rectifying column method, concentrated ammonia liquor is sent into
In tower, the heat heated by heater makes ammonium hydroxide evaporate, by tower internals, ammonia is made constantly to concentrate, and improves ammonia purity,
The ammonia of final overhead extraction high concentration, uses for denitration；Using rectifying column, it is possible to provide larger ammonia yield, adjustable range
It is larger.Configured with preheater, the heat of recyclable system plays energy-efficient effect.
Technical solution
In order to achieve the above technical purposes, a kind of energy-saving special ammonia distillation ammonia dress of denitration of the utility model design
It sets, it is characterised in that：It includes concentrated ammonia liquor holding vessel, and the output end of the concentrated ammonia liquor holding vessel is connected to concentrated ammonia liquor preheater,
The connecting leg road of the concentrated ammonia liquor holding vessel and concentrated ammonia liquor preheater is sequentially arranged with safety cut-off valve one and concentrated ammonia liquor delivery pump, institute
The output port one for stating concentrated ammonia liquor preheater is connected with weak aqua ammonia cooler, the output port two of the concentrated ammonia liquor preheater with
Ammonia still connects, and the weak aqua ammonia cooler is connected to weak aqua ammonia holding vessel, and the weak aqua ammonia cooler is stored up with the weak aqua ammonia
It deposits and weak aqua ammonia flowmeter and weak aqua ammonia delivery pump is housed on the connecting line of tank, the tower top of the ammonia still is equipped with tower top point contracting
Device, the tower top dephlegmator are connected with ammonia surge tank, and the output end of the ammonia surge tank is connected to several denitrating systems,
It is sequentially installed with safety cut-off valve two, flow control valve and flow control on the connecting line of the ammonia surge tank and denitrating system
Valve processed, the bottom end of the ammonia still with boil heater again and connect, the output for boiling heater and the concentrated ammonia liquor preheater again
Port three connects, and the input terminal for boiling heater again is equipped with steam flow control valve, the output end for boiling heater again
Steam drainage system is installed.
Further, the denitrating system includes denitration ammonia-spraying grid.
Further, concentrated ammonia liquor flowmeter is housed on the pipeline that the concentrated ammonia liquor preheater is connect with ammonia still.
Further, the bottom end of the ammonia still is equipped with tower reactor fluid level controller and bottom temperature controller.
Further, pressure sensor, liquid level sensor and safety valve are installed on the ammonia surge tank.
Advantageous effect
A kind of energy-saving special ammonia distillation ammonia-preparing device of denitration provided by the utility model carries out ammonia using rectifying column method
Prepared by gas, concentrated ammonia liquor is sent into tower, and the heat heated by heater makes ammonium hydroxide evaporate, by tower internals, keeps ammonia constantly dense
Contracting, improves ammonia purity, and the ammonia of final overhead extraction high concentration is used for denitration；Using rectifying column, it is possible to provide larger ammonia
Gas yield, adjustable range are larger.Configured with preheater, the heat of recyclable system plays energy-efficient effect.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of the utility model embodiment.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is described further.
Embodiment
As shown in Fig. 1, the special ammonia distillation ammonia-preparing device of a kind of energy-saving denitration, it includes concentrated ammonia liquor holding vessel 1, institute
The output end for stating concentrated ammonia liquor holding vessel 1 is connected to concentrated ammonia liquor preheater 2, the concentrated ammonia liquor holding vessel 1 and concentrated ammonia liquor preheater 2
Connecting leg road is sequentially arranged with safety cut-off valve 1 and concentrated ammonia liquor delivery pump 4, the output port one of the concentrated ammonia liquor preheater 2 with
Weak aqua ammonia cooler 5 is connected, and the output port two of the concentrated ammonia liquor preheater 2 is connect with ammonia still 6, the concentrated ammonia liquor preheating
Concentrated ammonia liquor flowmeter 19 is housed on the pipeline that device 2 is connect with ammonia still 6.The weak aqua ammonia cooler 5 is connected to weak aqua ammonia storage
Weak aqua ammonia flowmeter 8 and weak aqua ammonia are housed on the connecting line of tank 7, the weak aqua ammonia cooler 5 and the weak aqua ammonia holding vessel 7
The tower top of delivery pump 9, the ammonia still 6 is equipped with tower top dephlegmator 10, and the tower top dephlegmator 10 is connected with ammonia surge tank 11
It connects, the output end of the ammonia surge tank 11 is connected to several denitrating systems 12, the ammonia surge tank 11 and denitrating system 12
Connecting line on be sequentially installed with safety cut-off valve 2 13, flow control valve 14 and flow control valve 15, the ammonia still 6
Bottom end is connect with heater 16 is boiled again, and the heater 16 that boils again is connect with the output port three of the concentrated ammonia liquor preheater 2, institute
It states and boils the input terminal of heater 16 again steam flow control valve 17 is installed, the output end for boiling heater 16 again is equipped with steaming
Vapour draining system 18.
The denitrating system 12 includes denitration ammonia-spraying grid 1201.
The bottom end of the ammonia still 6 is equipped with tower reactor fluid level controller 20 and bottom temperature controller 21.
Pressure sensor 22, liquid level sensor 23 and safety valve 24 are installed on the ammonia surge tank 11.
The technological process of the present embodiment is：
Ammonium hydroxide in concentrated ammonia liquor holding vessel 1 is sent into ammonia steaming system using concentrated ammonia liquor delivery pump 4, and concentrated ammonia liquor is first fed into dense ammonia
Water preheater 2 after exchanging heat with 6 tower bottom liquid of ammonia still, recycles heat, is sent into the feed pipe of ammonia still 6, and concentrated ammonia liquor carries out in tower
Heat transfer, mass transfer carry out the separation of ammonia and water.Ammonia is gradually separated from ammonium hydroxide, and tower top is come together in, by tower top point contracting
Device 10, further purifies ammonia, and the ammonia of tower top high concentration passes through pipeline to ammonia surge tank 11.Ammonia surge tank 11
Outlet setting ammonia measures distribution module, and ammonia metering distribution module includes：Flow control valve 14 and flow control valve 15.This meter
Module and denitrating flue gas nitrogen oxides data locking are measured, is fed back by signal, ammonia is adjusted by flow control valve 14
Conveying capacity, meet the continuous-stable of denitration line for ammonia.This metering distribution module can be arranged it is multigroup, can using parallel form
It send to different denitration lines, the use of a plurality of line can be met simultaneously.
The low weak aqua ammonia of concentration is summarized after separating-purifying, in tower reactor in ammonia still 6, tower reactor weak aqua ammonia is delivered to pre-
Hot device 2 exchanges heat with cold ammonia, recycles heat, is re-fed into weak aqua ammonia cooler 5, is cooled to room temperature, pass through weak aqua ammonia delivery pump 9
It is sent to tank field weak aqua ammonia tank 7, weak aqua ammonia can measure the flow of weak aqua ammonia by weak aqua ammonia flowmeter 8.
Ammonia still 6 is provided with boils heater 16 again, gives system heat supply by steam, meets the heat demand of ammonia still process.It boils again
The input terminal of heater 16 is equipped with steam flow control valve 17, and the output end for boiling heater 16 again is equipped with steam drainage
System 18.Steam is adjusted by flow control valve 17, ensure to boil again heater 16 it is continual and steady there is steam to be passed through.
The present embodiment has the advantage that：1) a plurality of denitration line can be achieved and shares ammonia system processed, it is even more to meet 6 denitrations
The use of denitration, it is only necessary to 1 set of ammonia steaming system.2) more set denitrating systems can be met while being used, when denitration line is more, advantage is more
Obviously.3) ammonia still process load adjustable extent is big, meets different production line denitrations and uses.4) ammonium hydroxide inlet amount joins with ammonia load
Lock control can feed back ammonium hydroxide inlet amount, ammonia still process process is made not fluctuate steadily in advance.5) column plate type rectifying is used, ammonia purity is high,
It can reach 85% or more purity.6) using automatically controlling, PLC control cabinet and the interfaces HMI are configured, factory is facilitated to carry out parameter
Setting.7) surge tank is arranged in ammonia product, ensures that ammonia pressure is stablized.It, still can continuous-stable confession when system short-duration failure
Ammonia.8) system integration various interlockings, alert program, including：Tower reactor two position interlocks, temperature interlocking, flow interlocking etc..9)
Various safety measures are arranged in system, including：Tower top safety valve, surge tank safety valve, pump discharge safety valve etc..10) all automatic
Change integrated, each menu built in program, system can meet one-key start, mitigation labor intensity.11) this system is safe.
12) ammonium hydroxide preheater is set, and by bottom of tower discharging heat and charging cold ammonia heat exchange, recovery waste heat reduces whole energy consumption, belongs to section
It can type ammonia steaming system.13) this system is highly integrated, is dispatched from the factory using modularization, whole system be one individually sled block, by steelframe,
Equipment, pipeline, instrument, platform stair are all at sled block.On-site installation work amount is seldom, it is only necessary to the docking of inlet and outlet piping.
Claims (5)
1. a kind of special ammonia distillation ammonia-preparing device of energy-saving denitration, it is characterised in that：It includes concentrated ammonia liquor holding vessel (1), institute
The output end for stating concentrated ammonia liquor holding vessel (1) is connected to concentrated ammonia liquor preheater (2), and the concentrated ammonia liquor holding vessel (1) and concentrated ammonia liquor are pre-
The connecting leg road of hot device (2) is sequentially arranged with safety cut-off valve one (3) and concentrated ammonia liquor delivery pump (4), the concentrated ammonia liquor preheater (2)
Output port one be connected with weak aqua ammonia cooler (5), the output port two and ammonia still of the concentrated ammonia liquor preheater (2)
(6) connect, the weak aqua ammonia cooler (5) is connected to weak aqua ammonia holding vessel (7), the weak aqua ammonia cooler (5) with it is described dilute
Weak aqua ammonia flowmeter (8) and weak aqua ammonia delivery pump (9) are housed on the connecting line of ammonium hydroxide holding vessel (7), the ammonia still (6)
Tower top is equipped with tower top dephlegmator (10), and the tower top dephlegmator (10) is connected with ammonia surge tank (11), the ammonia buffering
The output end of tank (11) is connected to several denitrating systems (12), the connecting tube of the ammonia surge tank (11) and denitrating system (12)
Road is sequentially installed with safety cut-off valve two (13), flow control valve (14) and flow control valve (15), the ammonia still (6)
Bottom end is connect with heater (16) is boiled again, the output port three for boiling heater (16) and the concentrated ammonia liquor preheater (2) again
Connection, the input terminal for boiling heater (16) again be equipped with steam flow control valve (17), the heater (16) that boils again
Output end is equipped with steam drainage system (18).
2. a kind of energy-saving special ammonia distillation ammonia-preparing device of denitration as described in claim 1, it is characterised in that：The denitration
System (12) includes denitration ammonia-spraying grid (1201).
3. a kind of energy-saving special ammonia distillation ammonia-preparing device of denitration as described in claim 1, it is characterised in that：The dense ammonia
Concentrated ammonia liquor flowmeter (19) is housed on the pipeline that water preheater (2) is connect with ammonia still (6).
4. a kind of energy-saving special ammonia distillation ammonia-preparing device of denitration as described in claim 1, it is characterised in that：The ammonia still process
The bottom end of tower (6) is equipped with tower reactor fluid level controller (20) and bottom temperature controller (21).
5. a kind of energy-saving special ammonia distillation ammonia-preparing device of denitration as described in claim 1, it is characterised in that：The ammonia
Pressure sensor (22), liquid level sensor (23) and safety valve (24) are installed on surge tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820372853.1U CN208008471U (en) | 2018-03-19 | 2018-03-19 | A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820372853.1U CN208008471U (en) | 2018-03-19 | 2018-03-19 | A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208008471U true CN208008471U (en) | 2018-10-26 |
Family
ID=63889674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820372853.1U Withdrawn - After Issue CN208008471U (en) | 2018-03-19 | 2018-03-19 | A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208008471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264060A (en) * | 2018-03-19 | 2018-07-10 | 上海众仕工程技术有限公司 | A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration |
-
2018
- 2018-03-19 CN CN201820372853.1U patent/CN208008471U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264060A (en) * | 2018-03-19 | 2018-07-10 | 上海众仕工程技术有限公司 | A kind of special ammonia distillation ammonia-preparing device of energy-saving denitration |
| CN108264060B (en) * | 2018-03-19 | 2023-12-29 | 上海众仕环境科技股份有限公司 | Energy-saving ammonia water distillation ammonia production device special for denitration |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 208, Room C, No. 1, 1505 Lane, Lianhai Road, Minhang District, Shanghai 201108 Patentee after: SHANGHAI ZOSUM ENVIRONMENT Co.,Ltd. Address before: 201112 Shanghai city Minhang District Chang Road No. 27 Building No. 4 room E101 Patentee before: SHANGHAI ZOSUM ENGINEERING Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181026 Effective date of abandoning: 20231229 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181026 Effective date of abandoning: 20231229 |