CN208265782U - A kind of denitration tower urea seeding hydrolysis ammonia reaction tower - Google Patents
A kind of denitration tower urea seeding hydrolysis ammonia reaction tower Download PDFInfo
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- CN208265782U CN208265782U CN201720816944.5U CN201720816944U CN208265782U CN 208265782 U CN208265782 U CN 208265782U CN 201720816944 U CN201720816944 U CN 201720816944U CN 208265782 U CN208265782 U CN 208265782U
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- tower
- urea
- ammonia reaction
- depth hydrolysis
- denitration
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- 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
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
The utility model relates to a kind of tower urea seedings of denitration to hydrolyze ammonia reaction tower, including tower body, tower body includes the rectifying column being arranged successively from top to bottom, intermediate tower body and depth hydrolysis' tower, condenser is equipped in rectifying column, depth hydrolysis' tower lower part is equipped with reboiler, and depth hydrolysis' top of tower is equipped with liquid distribution device, several layers column plate is equipped in depth hydrolysis' tower, column plate is equipped with riser, is equipped with above riser and rises gas cap, is connected with downspout between every adjacent two layers column plate.The beneficial effects of the utility model are: being heated up by liquid side trailing edge, make urea is continual to be decomposed, make to form rectifying environment in entire tower simultaneously, uninterruptedly the involatile matters such as water in gas are condensed out, carbon dioxide and ammonia, the uniformity and reliability for substantially increasing heat exchange from tower top discharge are separated, equipment clogging is not susceptible to, reaction speed is substantially increased, the recycling rate of waterused of ureaclastic conversion ratio and aqueous solution is improved.
Description
Technical field
The utility model relates to a kind of reaction tower, in particular to the tower urea seeding of a kind of denitration hydrolyzes ammonia and reacts
Tower.
Background technique
NOXOccur as the pernicious gas in the industries industrial production such as thermoelectricity, glass-ceramic, coking, cement, to normal
Atmospheric environment has biggish harm, it can directly cause acid rain, toxicity haze.Therefore in flue gas in process units
NOXThere is larger limitation, denitration is just particularly important.In recent years, the biography that the industries such as thermoelectricity, coking, cement, glass-ceramic use
System removing NOXMode has the methods of SNCR, SCR.These methods require corresponding denitrification reducing agent.
The selection of denitrification reducing agent generally comprehensively considers in terms of its physical property, economy and safety, main at present
There are liquefied ammonia, ammonium hydroxide and three kinds of urea.Since liquefied ammonia is hazardous chemical, as country is to the pay attention to day by day of safety and a series of
The gradually appearance of related restriction, so that power plant is more next using receiving when liquefied ammonia in all various aspects such as examination & approval, duration, land occupation
More restrictions, it is also relatively complicated by the program of environmental protection inspection and acceptance after putting into operation；And ammonium hydroxide is because its ammonia content is low, volume is big, transport
Inconvenient, operating cost it is high and by the limitation applied.As non-hazardous feed for ammonia production, urea has denitration identical with liquefied ammonia
Performance, and be widely applied green fertilizer, it is nontoxic, using safe, because being limited without regulation, and be readily transported and
Storage.
For many years, because of improper use, the casualty loss as caused by liquefied ammonia is very heavy.Thermal power plant's denitration is according to liquefied ammonia
Raw material, usage amount is very huge, by taking a medium-sized thermal power plant as an example, takes around 10 tons of liquefied ammonia of consumption daily.There is number in the whole nation
Thousand thermal power plants, such as all using liquefied ammonia, only this item is equivalent to has thousands of 10 tons of liquefied ammonia tank car to run in the whole nation daily
Various regions, for transporting raw material, security risk be can not be ignored.Current SCR (Selective Catalytic at home
Reduction, selective catalytic reduction) denitration uses urea to have become a kind of trend for reducing agent, and is increasingly becoming master
Stream, especially in some key areas and from the closer city power plant in residential block, urea decomposition technique for production of ammonia obtains more and more
Application.
For this status, the characteristic that urea decomposes ammonia processed is successively found and is utilized both at home and abroad, with urea decomposition or water
Solution come replace liquefied ammonia be used as denitration, but because technology it is immature, it is external monopolization etc. reasons, plant investment is very big, 300-350kg/h produce
In 3000-7000 ten thousand, power consumption, water consume, steam consumption are higher for the hydrolysis of urea of ammonia ability and urea pyrolysis equipment investment, urea point
Solution reaction efficiency is low, conversion ratio is low, and structure is extremely complex, required at high cost.
Summary of the invention
In order to make up for the deficiencies of the prior art, providing a kind of structure, the processing is simple, save the cost, reduction for the utility model
Energy consumption, the denitration that safe and reliable, conversion rate of urea is high hydrolyze ammonia reaction tower with tower urea seeding.
The utility model is achieved by the following technical solution:
A kind of denitration hydrolyzes ammonia reaction tower, including tower body with tower urea seeding, it is characterized in that: the tower body include from
Rectifying column, intermediate tower body and the depth hydrolysis' tower that top to bottm is arranged successively, rectifying column is interior to be equipped with condenser, depth hydrolysis' tower lower part
Equipped with reboiler, depth hydrolysis' top of tower is equipped with liquid distribution device, and several layers column plate is equipped in depth hydrolysis' tower, is set on column plate
There is riser, is equipped with above riser and rises gas cap, be connected with downspout between every adjacent two layers column plate.
The column plate is equipped with catalyst layer, and overflow weir is equipped at the top of downspout, is equipped with drain hole on the inside of downspout.
The liquid distribution device includes urea liquid import, and urea liquid import is connected with main infusion tube, main infusion
Pipe is connected with several distributor pipes, offers liquid distributing hole on distributor pipe.
Gas vent is equipped at the top of the rectifying column.
The condenser side is connected with cooling water inlet and cooling water outlet.
The reboiler side is connected with steam inlet and condensation-water drain.
The reboiler bottom is equipped with grid, and depth hydrolysis' tower bottom is connected with raffinate outlet.
Packed tower is equipped in the rectifying column.
The rectifying column, depth hydrolysis' tower and reboiler side are respectively equipped with thermometric pressure tap, depth hydrolysis' tower bottom and
Reboiler is respectively arranged below with liquidometer mouth.
The beneficial effects of the utility model are: being heated up by liquid side trailing edge, makes urea is continual to be decomposed, arrive
When tower bottom reboiler, urea concentration is no more than 5%, if can be reduced to 2% or less using catalyst.Pass through tower bottom simultaneously
Reboiler heat exchange evaporation, overhead condensation make to form rectifying environment in entire tower, uninterruptedly that the involatile matters such as water in gas are cold
It coagulates, carbon dioxide and ammonia, separates and be discharged from tower top.The characteristics of utilizing spiral-plate heat exchanger simultaneously, sufficiently increases
The uniformity and reliability for adding heat exchange, are not susceptible to equipment clogging, can also be intended to do not have to catalyst, urged using liquid
Agent and switch using between three kinds of functions of solid catalyst, substantially increase reaction speed, and decomposes urea in reaction tower
More efficient, raffinate concentration is lower, improves the recycling rate of waterused of ureaclastic conversion ratio and aqueous solution, and device structure letter
Single, the processing is simple, save the cost, more reduces energy consumption, securely and reliably.
Detailed description of the invention
The utility model will be further described below with reference to the accompanying drawings.
Attached drawing 1 is the structural schematic diagram of the utility model；
Attached drawing 2 is schematic view of the front view inside depth hydrolysis' tower of the utility model；
Attached drawing 3 is depth hydrolysis' tower inside top structural schematic diagram of the utility model；
Attached drawing 4 is the liquid distribution device structural schematic diagram of the utility model；
Attached drawing 5 is the distributor pipe schematic view of the front view of the utility model；
Attached drawing 6 is the distributor pipe side structure schematic view of the utility model；
In figure, 1 tower body, 2 rectifying columns, 3 intermediate tower bodies, 4 depth hydrolysis' towers, 5 condensers, 6 reboilers, 7 liquid distributions dress
It sets, 8 column plates, 9 riseies, 10 liters of gas caps, 11 downspouts, 12 catalyst layers, 13 overflow weirs, 14 drain holes, 15 urea liquid imports,
16 main infusion tubes, 17 distributor pipes, 18 liquid distributing holes, 19 gas vents, 20 cooling water inlets, 21 cooling water outlets, 22 steam inlets,
23 condensation-water drains, 24 grids, the outlet of 25 raffinates, 26 packed towers, 27 thermometric pressure taps, 28 liquidometer mouths.
Specific embodiment
Attached drawing is a kind of specific embodiment of the utility model.The embodiment includes tower body 1, and tower body 1 includes from top to bottom
Rectifying column 2, intermediate tower body 3 and the depth hydrolysis' tower 4 being arranged successively, rectifying column 2 is interior to be equipped with condenser 5,4 lower part of depth hydrolysis' tower
Equipped with reboiler 6, it is equipped with liquid distribution device 7 at the top of depth hydrolysis' tower 4, is equipped with several layers column plate 8, tower in depth hydrolysis' tower 4
Plate 8 is equipped with riser 9, is equipped with above riser 9 and rises gas cap 10, is connected with downspout 11 between every adjacent two layers column plate 8.Tower
Plate 8 is equipped with catalyst layer 12, and overflow weir 13 is equipped at the top of downspout 11, is equipped with drain hole 14 on the inside of downspout 11.Liquid distribution
Device 7 includes urea liquid import 15, and urea liquid import 15 is connected with main infusion tube 16, and main infusion tube 16 is connected with several
Distributor pipe 17 offers liquid distributing hole 18 on distributor pipe 17.Gas vent 19 is equipped at the top of rectifying column 2.5 side of condenser is connected with
Cooling water inlet 20 and cooling water outlet 21.6 side of reboiler is connected with steam inlet 22 and condensation-water drain 23.Reboiler 6
Bottom is equipped with grid 24, and 4 bottom of depth hydrolysis' tower is connected with raffinate outlet 25.Packed tower 26 is equipped in rectifying column 2.Rectifying column 2,
Depth hydrolysis' tower 4 and 6 side of reboiler are respectively equipped with thermometric pressure tap 27, distinguish below 4 bottom of depth hydrolysis' tower and reboiler 6
Equipped with liquidometer mouth 28.
Ammonia reaction tower is hydrolyzed using a kind of tower urea seeding of denitration of the utility model, urea liquid passes through urea
Solution inlet port 15 enters the main infusion tube 16 of liquid distribution device 7, is then uniformly fallen to by the liquid distributing hole 18 of distributor pipe 17
The gas of column plate 8, hydrolysis under the action of catalyst layer 12, generation rises to condensation by riser 9 and liter gas cap 10
Device 5, the involatile matters such as continual water in gas condense out, carbon dioxide and ammonia are separated from gas vent
19 discharges.Urea liquid successively falls from top layer column plate 8, overflow weir 13 guarantee its in every layer of fully reacting as far as possible of column plate 8, then
It falls and is reacted again under the effect of downspout 11, make it by multistage hydrolysis, hydrolyze more thorough.Drain hole 14 can avoid
Downspout 11 blocks.Reboiler 6 is finally entered by the urea liquid of afterbody column plate 8, temperature is high in reboiler 6, can incite somebody to action
The urea liquid further progress of non-hydrolysis hydrolyzes, and further decreases its concentration.
Claims (9)
1. a kind of denitration hydrolyzes ammonia reaction tower, including tower body (1) with tower urea seeding, it is characterized in that: the tower body (1) wraps
The rectifying column (2) being arranged successively from top to bottom, intermediate tower body (3) and depth hydrolysis' tower (4) are included, is equipped with condensation in rectifying column (2)
Device (5), depth hydrolysis' tower (4) lower part are equipped with reboiler (6), are equipped with liquid distribution device (7) at the top of depth hydrolysis' tower (4), deep
It spends in hydrolysis tower (4) and is equipped with several layers column plate (8), column plate (8) is equipped with riser (9), is equipped with above riser (9) and rises gas cap
(10), downspout (11) are connected between every adjacent two layers column plate (8).
2. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the column plate
(8) catalyst layer (12) are equipped with, are equipped with overflow weir (13) at the top of downspout (11), drain hole is equipped on the inside of downspout (11)
(14).
3. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the liquid point
Cloth apparatus (7) includes urea liquid import (15), and urea liquid import (15) is connected with main infusion tube (16), main infusion tube
(16) it is connected with several distributor pipes (17), liquid distributing hole (18) is offered on distributor pipe (17).
4. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the rectifying column
(2) top is equipped with gas vent (19).
5. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the condenser
(5) side is connected with cooling water inlet (20) and cooling water outlet (21).
6. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the reboiler
(6) side is connected with steam inlet (22) and condensation-water drain (23).
7. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the reboiler
(6) bottom is equipped with grid (24), and depth hydrolysis' tower (4) bottom is connected with raffinate outlet (25).
8. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the rectifying column
(2) packed tower (26) are equipped in.
9. denitration according to claim 1 hydrolyzes ammonia reaction tower with tower urea seeding, it is characterized in that: the rectifying column
(2), depth hydrolysis' tower (4) and reboiler (6) side are respectively equipped with thermometric pressure tap (27), depth hydrolysis' tower (4) bottom and again
Boiling device (6) is respectively arranged below with liquidometer mouth (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816944.5U CN208265782U (en) | 2017-07-07 | 2017-07-07 | A kind of denitration tower urea seeding hydrolysis ammonia reaction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816944.5U CN208265782U (en) | 2017-07-07 | 2017-07-07 | A kind of denitration tower urea seeding hydrolysis ammonia reaction tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208265782U true CN208265782U (en) | 2018-12-21 |
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ID=64672111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720816944.5U Active CN208265782U (en) | 2017-07-07 | 2017-07-07 | A kind of denitration tower urea seeding hydrolysis ammonia reaction tower |
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| CN (1) | CN208265782U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439308A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Method for removing acidic liquid in gas phase at top of quenching tower of acrylonitrile device |
| CN112439309A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Acrylonitrile device rapid cooling system |
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
-
2017
- 2017-07-07 CN CN201720816944.5U patent/CN208265782U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439308A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Method for removing acidic liquid in gas phase at top of quenching tower of acrylonitrile device |
| CN112439309A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Acrylonitrile device rapid cooling system |
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
| CN114345247B (en) * | 2021-12-10 | 2023-12-05 | 江苏碳和环境科技有限公司 | Packing tower |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 103-3, building 15, Qilu cultural and creative base, No.101, Shunfeng Road, Jinan area, China (Shandong) pilot Free Trade Zone, Jinan City, Shandong Province Patentee after: Shandong AoMiao Technology Development Co., Ltd Address before: High tech Zone Xinyu South Road Ji'nan city Shandong province 250101 first Qilu Software Park building three Room 308 Patentee before: SHANDONG AONENG ELECTRIC POWER SCIENCE & TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |