CN204529331U - From stirring-type hydrolysis of urea reactor - Google Patents
From stirring-type hydrolysis of urea reactor Download PDFInfo
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- CN204529331U CN204529331U CN201520215146.8U CN201520215146U CN204529331U CN 204529331 U CN204529331 U CN 204529331U CN 201520215146 U CN201520215146 U CN 201520215146U CN 204529331 U CN204529331 U CN 204529331U
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Abstract
The utility model discloses a kind of from stirring-type hydrolysis of urea reactor, comprise reactor shell, urea soln import, poor urea soln outlet, for described reactor shell is divided into the liquid level baffle plate of reaction zone and flooded zonevvv and perpendicular to bottom reaction zone and be positioned at reaction zone air inlet supervisor, described air inlet supervisor outside surface is provided with multiple axis and the tangent jet pipe of giving vent to anger of circumference is responsible in air inlet, described jet pipe of giving vent to anger is arranged along mode that is clockwise or that be rotated counterclockwise to make air inlet be responsible for urea soln around simultaneously, described air inlet supervisor is multiple and is evenly arranged at bottom reaction zone, by the stirring action of multiple air inlet supervisors to urea soln, make the reaction of urea soln more violent, avoid the shortcoming that liquid thermal conductivity is bad, guarantee reaction efficiency is high, and utilizes self kinetic energy of water vapour to stir, and avoids adding whipping appts, guarantee structure is simple, easy to operate.
Description
Technical field
The utility model relates to denitrating flue gas field of purification, specifically a kind of from stirring-type hydrolysis of urea reactor.
Background technology
Flue Gas Denitration Technology of Coal-buming Power Plant mainly contains low nitrogen burning, selective non-catalytic reduction (SNCR) and SCR (SCR); Along with country is to the raising of generating plant flue gas emission standard, denitrating flue gas has listed the development program of " 12 " in; Because in China's ature of coal complexity, flue gas, NOx content is high, the SCR technology therefore with higher denitration efficiency obtains very big popularization at home; The reductive agent of SCR gas denitrifying technology can select liquefied ammonia, ammoniacal liquor and urea.Liquefied ammonia low price, transport, running cost is low, but belongs to major hazard source, transport, stores and is all subject to strict control; Ammonia density in ammoniacal liquor is lower, and transportation cost is high, and has more metal ion in industrial ammonia, has certain influence to the life-span of catalyzer, therefore applies not extensive in the SCR engineering of coal power station; Urea is a kind of nontoxic solid particulate, and transport, storage safe is convenient, environmental sound, is applicable to denitration engineering, the coal power station that especially distance city, Residential areas are nearer.For the consideration of security and practicality, in order to overcome the potential safety hazard that the links such as liquefied ammonia transport, discharging, storage, operation, maintenance exist, the urea technique for production of ammonia being applicable to SCR denitrating flue gas causes the concern of people gradually.The technology of current urea ammonia mainly contains urea pyrolysis and hydrolysis of urea two kinds.Compare pyrolytic reaction, hydrolysis of urea process is relatively more thorough, and no coupling product produces, and consume energy little, only need low-grade steam can meet the heat demand of hydrolysis reaction, running cost is low.
In existent technique, water vapor gas directly directly passes into from the bottom of reactor and heats and keep the skin wet by the hydrolysis of urea reactor that power-plant flue gas denitrating system adopts, urea soln decomposes produces ammonia and carbonic acid gas, finally discharges from reactor top and enters SCR denitration system.Current hydrolyzer, in actual motion, because heat that water vapour is with can not effectively disperse in the reactor, makes the working efficiency of reactor not high.
Therefore, for overcoming the above problems, need a kind of hydrolysis of urea reactor, can utilize water vapour with heat and kinetic energy, the urea soln in reactor is fully heated, improve reaction efficiency.
Utility model content
In view of this, the purpose of this utility model overcomes defect of the prior art, provide a kind of can utilize the poor urea soln that reacted discharge to the rich urea soln entering reactor carry out preheating from stirring-type hydrolysis of urea reactor.
Of the present utility model from stirring-type hydrolysis of urea reactor, comprise reactor shell, urea soln import, poor urea soln outlet, for described reactor shell is divided into the liquid level baffle plate of reaction zone and flooded zonevvv and perpendicular to bottom reaction zone and be positioned at reaction zone air inlet supervisor, described urea soln import is arranged at bottom reaction zone, poor urea soln outlet is arranged at bottom flooded zonevvv, described air inlet supervisor top closure, lower end is as water vapour inlet mouth, described air inlet supervisor outside surface is provided with multiple axis and the tangent jet pipe of giving vent to anger of circumference is responsible in air inlet, described jet pipe of giving vent to anger is arranged along mode that is clockwise or that be rotated counterclockwise to make air inlet be responsible for urea soln around simultaneously, described air inlet supervisor is multiple and is evenly arranged at bottom reaction zone, .
Further, also comprise the equilibrium box be arranged at for balancing each air inlet supervisor pressure, described equilibrium box is provided with multiple points of gas ports and each point of gas port is communicated with each water vapour inlet mouth one_to_one corresponding, and equilibrium box is arranged at the lower end of reactor shell and equilibrium box is provided with total inlet mouth; The supply heating unit for preventing water vapour from liquefying is provided with in described equilibrium box.
Further, also comprise the waste-heat recovery device utilizing the heat of poor urea soln of discharging reactor shell the urea soln that will enter reactor shell to be carried out to preheating, described waste-heat recovery device comprise connect urea soln import feed-pipe, connect the discharge nozzle of poor urea soln outlet and connect the interchanger of described feed-pipe and discharge nozzle.
Further, also sewage draining exit is provided with bottom described reaction zone.
Further, also liquid thermometer is provided with bottom described reaction zone.
Further, described reactor shell is provided with manhole near flooded zonevvv side.
The beneficial effects of the utility model are: the utility model is disclosed from stirring-type hydrolysis of urea reactor, by the stirring action of multiple air inlet supervisors to urea soln, make the reaction of urea soln more violent, avoid the shortcoming that liquid thermal conductivity is bad, guarantee reaction efficiency is high, and utilizes self kinetic energy of water vapour to stir, and avoids adding whipping appts, guarantee structure is simple, easy to operate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of air inlet supervisor.
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the vertical view of air inlet supervisor, as shown in the figure, in the present embodiment from stirring-type hydrolysis of urea reactor, comprise reactor shell 1, urea soln import 11, poor urea soln outlet 12, for described reactor shell 1 is divided into the liquid level baffle plate 2 of reaction zone and flooded zonevvv and perpendicular to bottom reaction zone and be positioned at reaction zone air inlet supervisor 3, described urea soln import 11 is arranged at bottom reaction zone, poor urea soln outlet 12 is arranged at bottom flooded zonevvv, in hydrolysis reaction, steam and rich urea soln constantly pass in the reaction zone of reactor shell 1, therefore in reaction process, in reaction zone, liquid level can raise gradually, reacted poor urea soln constantly can be crossed liquid level baffle plate 2 overflow from reaction zone and enter in flooded zonevvv, therefore liquid level baffle plate 2 can ensure that urea soln maintains normal level, and flooded zonevvv can be used for collecting the poor urea soln reacted, 3 top closure are responsible in described air inlet, lower end is communicated with outside source of water vapor as water vapour inlet mouth, described air inlet is responsible for 3 outside surfaces and is provided with multiple axis and air inlet and is responsible for the tangent jet pipes 31 of giving vent to anger of 3 circumferences, it is air outlet that jet pipe 31 of giving vent to anger is responsible for 3 ends away from air inlet, the other end and air inlet are responsible for 3 and are sealed and be communicated with, described jet pipe 31 of giving vent to anger is arranged along mode that is clockwise or that be rotated counterclockwise to make air inlet be responsible for 3 surrounding urea solns simultaneously, namely jet pipe 31 of giving vent to anger is responsible for that the sense of rotation of 3 outside surfaces is consistent and axial and circumferential along air inlet supervisor 3 arrange multiple along air inlet, described air inlet supervisor 3 is multiple and is evenly arranged at bottom reaction zone, reactor top is provided with ammonia outlet 9, be responsible for the stirring action of 3 pairs of urea solns by multiple air inlet, make the reaction of urea soln more violent, avoid the shortcoming that liquid thermal conductivity is bad, guarantee reaction efficiency is high, and utilizes self kinetic energy of water vapour to stir, and avoids adding whipping appts, guarantee structure is simple, easy to operate.
In the present embodiment, also comprise the equilibrium box 4 being arranged at and being responsible for 3 pressure for balancing each air inlet, described equilibrium box 4 is provided with multiple points of gas ports and each point of gas port is communicated with each water vapour inlet mouth one_to_one corresponding, and equilibrium box 4 is arranged at the lower end of reactor shell 1 and equilibrium box 4 is provided with total inlet mouth 41; The supply heating unit 5 for preventing water vapour from liquefying is provided with in described equilibrium box 4, supply heating unit 5 can be hot plate, by equilibrium box 4 being arranged at the lower end near reaction zone, water vapour is stirred to urea soln, supply heating unit 5 can carry out supply for dispersed heat in water vapor transport process, ensures that the heat in reactor is sufficient.
In the present embodiment, also comprise the waste-heat recovery device utilizing the heat of the poor urea soln of discharging reactor shell 1 urea soln that will enter reactor shell 1 to be carried out to preheating, described waste-heat recovery device comprises the feed-pipe 7 connecting urea soln import 11, the discharge nozzle 8 connecting poor urea soln outlet 12 and connects the interchanger 6 of described feed-pipe 7 and discharge nozzle 8; Interchanger 6 is existing energy-efficient equipments realizing heat transmission between material between two or more fluid of differing temps, when interchanger 6 connects, poor urea soln discharge nozzle 8 being connected to liquid changing device thermal fluid inlet and reactor shell 1 exports between 12, and feed-pipe 7 is connected between the urea soln import 11 of liquid changing device cold fluid inlet and reactor shell 1.
In the present embodiment, bottom described reaction zone, be also provided with sewage draining exit; When urea soln reaction is complete, no longer in reactor shell 1, supplement rich urea soln and when no longer producing ammonia in reactor shell 1, this sewage draining exit can be led to the poor urea soln in reaction zone is discharged.
In the present embodiment, bottom described reaction zone, be also provided with liquid thermometer; Also liquid thermometer is provided with bottom described reaction zone, the hydrolysis rate impact of temperature on urea is larger, often increase by 10 DEG C of speed of response and increase 1.4-1.5 doubly, therefore, very important to the temperature in solution reaction process, and liquid thermometer can the Temperature numerical of Real-time Collection solution, monitors for operating personnel.
In the present embodiment, described reactor shell 1 is provided with manhole 13 near flooded zonevvv side; In the present embodiment, described reactor shell 1 is provided with manhole 13 near flooded zonevvv side, and manhole can enter in reactor shell 1 for maintainer and carry out overhaul of the equipments, in addition, manhole is arranged at flooded zonevvv side, when Manhole Sealing Joints can be avoided not tight, causes solution in reaction zone to be oozed out by manhole.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. one kind from stirring-type hydrolysis of urea reactor, it is characterized in that: comprise reactor shell, urea soln import, poor urea soln outlet, for described reactor shell is divided into the liquid level baffle plate of reaction zone and flooded zonevvv and perpendicular to bottom reaction zone and be positioned at reaction zone air inlet supervisor, described urea soln import is arranged at bottom reaction zone, poor urea soln outlet is arranged at bottom flooded zonevvv, described air inlet supervisor top closure, lower end is as water vapour inlet mouth, described air inlet supervisor outside surface is provided with multiple axis and the tangent jet pipe of giving vent to anger of circumference is responsible in air inlet, described jet pipe of giving vent to anger is arranged along mode that is clockwise or that be rotated counterclockwise to make air inlet be responsible for urea soln around simultaneously, described air inlet supervisor is multiple and is evenly arranged at bottom reaction zone.
2. according to claim 1 from stirring-type hydrolysis of urea reactor, it is characterized in that: also comprise the equilibrium box be arranged at for balancing each air inlet supervisor pressure, described equilibrium box is provided with multiple points of gas ports and each point of gas port is communicated with each water vapour inlet mouth one_to_one corresponding, and equilibrium box is arranged at the lower end of reactor shell and equilibrium box is provided with total inlet mouth; The supply heating unit for preventing water vapour from liquefying is provided with in described equilibrium box.
3. according to claim 2 from stirring-type hydrolysis of urea reactor, it is characterized in that: also comprise the waste-heat recovery device utilizing the heat of poor urea soln of discharging reactor shell the urea soln that will enter reactor shell to be carried out to preheating, described waste-heat recovery device comprise connect urea soln import feed-pipe, connect the discharge nozzle of poor urea soln outlet and connect the interchanger of described feed-pipe and discharge nozzle.
4. according to claim 3 from stirring-type hydrolysis of urea reactor, it is characterized in that: bottom described reaction zone, be also provided with sewage draining exit.
5. according to claim 4 from stirring-type hydrolysis of urea reactor, it is characterized in that: bottom described reaction zone, be also provided with liquid thermometer.
6. according to claim 5 from stirring-type hydrolysis of urea reactor, it is characterized in that: described reactor shell is provided with manhole near flooded zonevvv side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520215146.8U CN204529331U (en) | 2015-04-10 | 2015-04-10 | From stirring-type hydrolysis of urea reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520215146.8U CN204529331U (en) | 2015-04-10 | 2015-04-10 | From stirring-type hydrolysis of urea reactor |
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| CN204529331U true CN204529331U (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151092A (en) * | 2017-12-22 | 2018-06-12 | 横琴国际知识产权交易中心有限公司 | A kind of smoke exhaust ventilator residual neat recovering system |
| CN109529729A (en) * | 2018-12-11 | 2019-03-29 | 中国化学工程第六建设有限公司 | Fine chemistry industry produces Organic Silicon Plant |
-
2015
- 2015-04-10 CN CN201520215146.8U patent/CN204529331U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108151092A (en) * | 2017-12-22 | 2018-06-12 | 横琴国际知识产权交易中心有限公司 | A kind of smoke exhaust ventilator residual neat recovering system |
| CN109529729A (en) * | 2018-12-11 | 2019-03-29 | 中国化学工程第六建设有限公司 | Fine chemistry industry produces Organic Silicon Plant |
| CN109529729B (en) * | 2018-12-11 | 2021-11-02 | 中国化学工程第六建设有限公司 | Fine chemical production organosilicon device |
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