CN203582505U - Urea solution pyrolyzing furnace - Google Patents
Urea solution pyrolyzing furnace Download PDFInfo
- Publication number
- CN203582505U CN203582505U CN201320742609.7U CN201320742609U CN203582505U CN 203582505 U CN203582505 U CN 203582505U CN 201320742609 U CN201320742609 U CN 201320742609U CN 203582505 U CN203582505 U CN 203582505U
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- Prior art keywords
- reaction chamber
- air inlet
- pyrolyzing
- pyrolytic reaction
- urea soln
- Prior art date
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- 239000004202 carbamide Substances 0.000 title claims abstract description 44
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- 238000012423 maintenance Methods 0.000 claims abstract description 19
- 238000000197 pyrolysis Methods 0.000 claims description 33
- 244000144985 peep Species 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 7
- 208000002925 dental caries Diseases 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 22
- 239000007789 gas Substances 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a urea solution pyrolyzing furnace solving the problem of poor pyrolyzing effect caused by poor airflow distribution in a pyrolyzing furnace in the prior art. The urea solution pyrolyzing furnace comprises a pyrolyzing reaction chamber, a heating air inlet arranged on the top of the pyrolyzing reaction chamber, a product gas outlet formed in the bottom end of the pyrolyzing reaction chamber, a urea solution inlet formed in the upper part of the pyrolyzing reaction chamber, a urea solution inlet formed in the upper part of the pyrolyzing reaction chamber, an atomizing spraying gun arranged in the pyrolyzing reaction chamber and communicated with a urea solution inlet pipe, an air inlet guide plate and an air inlet balance plate which are sequentially arranged in the pyrolyzing reaction chamber, wherein a maintenance bypass isolating valve and a product gas outlet maintenance bypass connected with the maintenance bypass isolating valve are arranged at the bottom end of the pyrolyzing reaction chamber. According to the urea solution pyrolyzing furnace, the air inlet guide plate is provided, so that hot air can be uniformly distributed in the pyrolyzing reaction chamber through a blade on the air inlet guide plate when entering the pyrolyzing furnace, and thus uniform heating on a urea solution is ensured.
Description
Technical field
The utility model relates to a kind of urea soln pyrolysis oven.
Background technology
Heat power plant boiler burning produces a large amount of flue gases, wherein NO
xcontent is high, according to the < < fuel-burning power plant atmosphere pollutants emission standards > > requirement of implementing on January 1st, 2012, all fossil fuel fired boiler all must arrange denitrification apparatus, particularly large-sized boiler.The method of its use will be for selective catalytic reduction (SCR method) chemical reaction:
Be that SCR method is used a large amount of ammonia (NH
3).
Ammonia method processed mainly has three kinds of modes, i.e. ammoniacal liquor, liquefied ammonia, urea according to region, envrionment conditions (containing transportation, storage) both at home and abroad at present.
Ammoniacal liquor, liquefied ammonia, the relative liquefied ammonia of ammoniacal liquor is safer, but all belongs to hazardous substance.The blast utmost point root of ammonia steam and air mixture is 15.7%-27.4%, reaches this concentration range and meets naked light energy combustion explosion.Recently, a lot of A leak of liquefied ammonia explosive incidents of domestic appearance have been brought very big injury and psychological burden to people's life, property.And ammoniacal liquor, liquefied ammonia transportation, storage difficulty relatively.
Urea is a kind of colourless or white, nontoxic, harmless chemical, and is easy to transportation, storage.Therefore, it is to expand gradually at present use as feed for ammonia production, and very popular.
According to urea characteristic, process for producing ammonia from urea is divided into hydrolysis and two kinds of methods of pyrolysis.
Urea soln pyrolysis oven is the main equipment of urea pyrolysis technique, not good but existing urea soln pyrolysis oven is still deposited the distribution of air flow of warm air, cause pyrolysis poor effect, and the phenomenon of slagging scorification easily appears in pyrolysis oven.
Utility model content
The purpose of this utility model is to provide a kind of urea soln pyrolysis oven, and in the pyrolysis oven of solution prior art, distribution of air flow is not good, causes the problem of pyrolysis poor effect.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Urea soln pyrolysis oven, comprise pyrolytic reaction chamber, be arranged at the hot air inlet that adds on top, pyrolytic reaction chamber, be arranged at the product gas outlet of bottom, pyrolytic reaction chamber, be arranged at the urea soln import on top, pyrolytic reaction chamber, be arranged at the indoor atomizing lance being communicated with by urea soln inlet pipe with urea soln import of pyrolytic reaction, and it is indoor and be positioned at the air inlet flow deflector and the air inlet balancing disk that add hot air inlet below, atomizing lance top to be set in turn in pyrolytic reaction; Bottom, described pyrolytic reaction chamber is also provided with maintenance bypass shutdown valve, and the product gas outlet maintenance bypass being connected with maintenance bypass shutdown valve.
Further, between described product gas outlet and pyrolytic reaction chamber, be also provided with grit chamber, between described grit chamber and pyrolysis reactor furnace, be also provided with grit chamber's shutdown valve.
Again further, described air inlet flow deflector is provided with multiple blades that are circular layout and air inlet flow deflector are separated into multiple cavitys.
Further, described air inlet balancing disk is reticulated structure.
In addition, described atomizing lance adopts the shower nozzle of two media.
In order better to realize the utility model, bottom, described pyrolytic reaction chamber is provided with pyrolysis oven peep hole; Described grit chamber is provided with grit chamber's peep hole.
Preferred as one, pyrolytic reaction of the present utility model chamber all adopts flange to be connected with adding hot air inlet, product gas outlet, atomizing lance, grit chamber, installation, operation, easy to maintenance.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is at the indoor air inlet flow deflector that is provided with of pyrolytic reaction, warm air can be distributed to pyrolytic reaction uniformly after in warm air enters pyrolysis oven indoor by the blade on air inlet flow deflector, guaranteed that urea soln is heated evenly.
(2) the utility model is at the indoor air inlet balancing disk that is also provided with of pyrolytic reaction, and warm air is distributed further, guarantee the effect of warm air reaction balanced with atomize urea solution, steady flow condition, thereby it is complete to realize pyrolysis, prevents slagging scorification effect.
(3) the utility model is also provided with grit chamber and product gas outlet maintenance bypass in bottom, pyrolytic reaction chamber, can realize timing observation, scarfing cinder, guarantees that system is normal, stable, operation continuously; Also be provided with grit chamber's shutdown valve and maintenance bypass shutdown valve simultaneously, can realize contacting of partition and pyrolytic reaction chamber, guarantee to remove the issuable slagging scorification of abnormal running, and do not affect normal operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of air inlet flow deflector in the utility model.
Fig. 3 is the structural representation of air inlet balancing disk in the utility model.
Wherein, the component name that in accompanying drawing, mark is corresponding is called: 1-pyrolytic reaction chamber, and 2-adds hot air inlet, 3-product gas outlet, the import of 4-urea soln, 5-urea soln inlet pipe, 6-atomizing lance, 7-air inlet flow deflector, 8-air inlet balancing disk, 9-maintenance bypass shutdown valve, 10-product gas outlet maintenance bypass, 11-grit chamber, 12-grit chamber shutdown valve, 13-blade, 14-pyrolysis oven peep hole, 15-grit chamber peep hole.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figures 1 to 3, urea soln pyrolysis oven, comprise pyrolytic reaction chamber 1, what be arranged at top, pyrolytic reaction chamber adds hot air inlet 2, be arranged at the product gas outlet 3 of bottom, pyrolytic reaction chamber, be arranged at the urea soln import 4 on top, pyrolytic reaction chamber, be arranged at the indoor atomizing lance 6 being communicated with by urea soln inlet pipe 5 with urea soln import of pyrolytic reaction, and it is indoor and be positioned at the air inlet flow deflector 7 and the air inlet balancing disk 8 that add hot air inlet below, atomizing lance top to be set in turn in pyrolytic reaction; Bottom, described pyrolytic reaction chamber is also provided with maintenance bypass shutdown valve 9, and the product gas outlet maintenance bypass 10 being connected with maintenance bypass shutdown valve.By above-mentioned setting, when using the utility model, warm air enters from adding hot air inlet, then by air inlet flow deflector and air inlet balancing disk, warm air is evenly distributed to pyrolytic reaction indoor, thereby realize and evenly mix from the urea soln of atomizing lance ejection, it is heated, and there will not be, only heat a part of urea soln, cause pyrolysis incomplete.And the maintenance bypass shutdown valve of above-mentioned setting and product gas outlet maintenance bypass are while there is slagging scorification problem for abnormal running, can remove, and not affect normal operation of the present utility model.
More even for what warm air was distributed, preferred as one, described air inlet flow deflector 7 is provided with multiple blades 13 that are circular layout and air inlet flow deflector are separated into multiple cavitys; Described air inlet balancing disk 8 is reticulated structure.By above-mentioned setting, warm air flows to pyrolysis reaction chamber middle part by multiple cavitys of air inlet flow deflector, by cancellated air inlet balancing disk, makes the more balanced of warm air distribution.Thereby assurance further reaction balanced with urea soln.
In order to guarantee normal operation of the present utility model, between described product gas outlet 3 and pyrolytic reaction chamber, be also provided with grit chamber 11, between described grit chamber and pyrolysis reactor furnace, be also provided with grit chamber's shutdown valve 12.When using the utility model, if there is slagging scorification phenomenon very, can slagging scorification be removed by grit chamber, guarantee normal operation of the present utility model, owing to being provided with grit chamber's shutdown valve, so when removing slagging scorification, can not affect the normal operation in pyrolytic reaction, improve pyrolysis efficiency.
In order to ensure the complete atomization of urea, described atomizing lance adopts the shower nozzle of two media.
For when using the utility model, can observe the indoor particular case of pyrolytic reaction, bottom, described pyrolytic reaction chamber is provided with pyrolysis oven peep hole 14; In order to guarantee normal operation of the present utility model, can remove in time the slagging scorification in grit chamber, described grit chamber is provided with grit chamber's peep hole 15.
When the utility model is used in reality, the hot air temperature passing into is 345 ℃～600 ℃, through adding hot air inlet, enter heating chamber, flow deflector, balancing disk carry out after equilibrium distributes entering pyrolysis chamber to adding warm air, fully react under high temperature, normal pressure with the urea soln of complete atomization, resolve into the mixing gas of ammonia, carbonic acid gas, water vapor, from pyrolysis oven outlet, deliver to place to use.
According to above-described embodiment, just can realize well the utility model.What deserves to be explained is; under prerequisite based on said structure design; for solving same technical problem; even if some that make on the utility model are without substantial change or polishing; the essence of the technical scheme adopting is still the same with the utility model, therefore it also should be in protection domain of the present utility model.
Claims (6)
1. urea soln pyrolysis oven, it is characterized in that, comprise pyrolytic reaction chamber (1), what be arranged at top, pyrolytic reaction chamber adds hot air inlet (2), be arranged at the product gas outlet (3) of bottom, pyrolytic reaction chamber, be arranged at the urea soln import (4) on top, pyrolytic reaction chamber, be arranged at the indoor atomizing lance (6) being communicated with by urea soln inlet pipe (5) with urea soln import of pyrolytic reaction, and it is indoor and be positioned at the air inlet flow deflector (7) and the air inlet balancing disk (8) that add hot air inlet below, atomizing lance top to be set in turn in pyrolytic reaction; Bottom, described pyrolytic reaction chamber is also provided with maintenance bypass shutdown valve (9), and the product gas outlet maintenance bypass (10) being connected with maintenance bypass shutdown valve.
2. urea soln pyrolysis oven according to claim 1, is characterized in that, is also provided with grit chamber (11) between described product gas outlet (3) and pyrolytic reaction chamber, is also provided with grit chamber's shutdown valve (12) between described grit chamber and pyrolysis reactor furnace.
3. urea soln pyrolysis oven according to claim 2, is characterized in that, described air inlet flow deflector (7) is provided with multiple blades (13) that are circular layout and air inlet flow deflector are separated into multiple cavitys.
4. urea soln pyrolysis oven according to claim 3, is characterized in that, described air inlet balancing disk (8) is reticulated structure.
5. urea soln pyrolysis oven according to claim 4, is characterized in that, described atomizing lance adopts the shower nozzle of two media.
6. urea soln pyrolysis oven according to claim 5, is characterized in that, bottom, described pyrolytic reaction chamber is provided with pyrolysis oven peep hole (14); Described grit chamber is provided with grit chamber's peep hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742609.7U CN203582505U (en) | 2013-11-22 | 2013-11-22 | Urea solution pyrolyzing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320742609.7U CN203582505U (en) | 2013-11-22 | 2013-11-22 | Urea solution pyrolyzing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203582505U true CN203582505U (en) | 2014-05-07 |
Family
ID=50580455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320742609.7U Expired - Fee Related CN203582505U (en) | 2013-11-22 | 2013-11-22 | Urea solution pyrolyzing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203582505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144642A (en) * | 2021-03-16 | 2021-07-23 | 北京工大环能科技有限公司 | Device for evaporation pyrolysis |
-
2013
- 2013-11-22 CN CN201320742609.7U patent/CN203582505U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113144642A (en) * | 2021-03-16 | 2021-07-23 | 北京工大环能科技有限公司 | Device for evaporation pyrolysis |
| CN114307859A (en) * | 2021-03-16 | 2022-04-12 | 北京工大环能科技有限公司 | Device for evaporation pyrolysis |
| CN113144642B (en) * | 2021-03-16 | 2024-03-26 | 北京紫黄科技有限公司 | Device for evaporation pyrolysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The information industry building, No. 159 East loop section of Chengdu Chenghua District 610000 Sichuan province No. 1106 Patentee after: CHENGDU SHIGANG ENERGY SAVING AND ENVIRONMENT PROTECTION ENGINEERING Co.,Ltd. Address before: The information industry building, No. 159 East loop section of Chengdu Chenghua District 610000 Sichuan province No. 1106 Patentee before: CHENGDU SHIGANG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |