CN203095628U - Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration - Google Patents
Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration Download PDFInfo
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- CN203095628U CN203095628U CN 201320145979 CN201320145979U CN203095628U CN 203095628 U CN203095628 U CN 203095628U CN 201320145979 CN201320145979 CN 201320145979 CN 201320145979 U CN201320145979 U CN 201320145979U CN 203095628 U CN203095628 U CN 203095628U
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Abstract
The utility model discloses an electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration, which comprises a reactor body (1), wherein a product gas outlet pipe (18) and a urea solution inlet (12) are formed in the outer wall of the reactor body (1). The electric heating urea hydrolysis ammonia preparation rector also comprises an electric heating controller (2) and one or more electric heating tubes (3) arranged in the reactor body (1), wherein the electric heating controller (2) is connected with the electric heating tube (3) through a cable. The electric heating urea hydrolysis ammonia preparation rector disclosed by the utility model adopts electric energy as supply energy and has the advantages of high hydrolysis efficiency, convenience in disassembly for cleaning and replacing and the like.
Description
Technical field
The utility model relates to the system ammonia reactor, particularly a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas.
Background technology
In China, industry industrial gasses quantity dischargeds such as metallurgy, petrochemical complex, chemical fertilizer, urban coal gasification are all very big, along with attention gradually to environmental problem, China formally implemented " thermal power plant's atmosphere pollutants emission standards " in 2012, adjusted the Air Pollutant Emission concentration limit, the enterprise that implements discharging has been proposed strict more requirement.A kind of important waste gas is flue gas nitrogen oxide in the industrial gasses, at present, in the measure of all control flue gas nitrogen oxide dischargings, it is one of flue gases purification method that the selective catalytic reduction flue gas removes oxynitride, and it is widely used in the denitrating flue gas field with characteristics such as technology maturation, reliability height and suitability are good.And in the main chemical reactions of selective catalytic reduction gas denitrifying technology, the reductive agent gas ammonia that participates in reaction is an important material, at present explained hereafter gas ammonias such as liquefied ammonia evaporation, ammoniacal liquor vaporization that adopt more, but because liquefied ammonia has toxicity and corrodibility, and volatilization easily, have bigger potential safety hazard, all there are special stipulation in China to transportation, the storage of liquefied ammonia or ammoniacal liquor in addition, and the transportation and the storage of system ammonia raw material must be carried out in accordance with regulations in strictness.
And the another kind of method of ammonia preparation, be by the buying solid urea, prepare by urea decomposition, this kind method is owing to can adopt nontoxic, tasteless general chemical raw material urea, transportation and storage all only need to handle by General Physics, the urea decomposition ammonia-preparing device is set inside, and the safety prevention measure in the simplified reduction agent storage and transport process reduces production costs greatly.
Hydrolysis of urea is ureaclastic a kind of method, hydrolysis system ammonia reactor is the key equipment in the Ammonia Process, mainly comprises reactor body, is arranged on the heat transfer tube in the reactor body and is arranged on product gas outlet, urea soln inlet, safety-valve on the reactor body.Present urea system ammonia reactor heat supply mostly is high-temperature hot-air or steam provides, and when not enough or conditions such as vapor pressure, temperature did not satisfy when hot blast rate, hydrolysis system ammonia reactor can't works better.
The utility model content
Technical problem to be solved in the utility model is, provides a kind of electric energy that adopts as supply energy source, the electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas that hydrolysis reaction efficient is high.
For solving the problems of the technologies described above, a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of the present utility model, comprise reactor body, above-mentioned reactor body outer wall is provided with product gas outlet pipe and urea soln inlet, also comprise electrical heating controller and at least one electric heating tube that is arranged on reactor body inside, above-mentioned electrical heating controller links to each other with electric heating tube by cable.
As further improvement of the utility model, above-mentioned reactor body is horizontal cylindrical structure, comprises cylindrical shell and end socket, and end socket is arranged on the cylindrical shell both sides; The said products gas outlet pipe and urea soln inlet are separately positioned on the upper and lower end of reactor body.
Further, move and control for ease of the integral body of electrically heated hydrolysis of urea system ammonia reactor equipment, the whole skid of above-mentioned reactor body and electrical heating controller is on a horizontal base.
Preferably, the said products gas outlet pipe is provided with pressure-detecting device.
Preferably, above-mentioned reactor body outer wall is provided with temperature sensor and thermometer.
Preferably, the above-mentioned electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas also comprises radar type liquid-level gauge, and above-mentioned reactor body outer wall is provided with interface of the level gauge, and above-mentioned radar type liquid-level gauge is by in the interface of the level gauge insertion reaction device body.
Preferably, also be provided with safety valve and tapping valve on the above-mentioned reactor body.
Preferably, for keeping the temperature in the reactor body, reduce heat and scatter and disappear, above-mentioned reactor body arranged outside has thermal insulation layer.
Principle of work of the present utility model is: system ammonia raw material--urea soln adds in the reactor body by the urea soln inlet, soaks electric heating tube fully; The output rating of electrical heating controller control electric heating tube, thus the heating of control urea soln makes urea soln be hydrolyzed into ammonia; Ammonia is discharged reactor body by the product gas outlet pipe.Force value on the pressure-detecting device testing product gas outlet pipe, thermometer and the intrinsic temperature of temperature sensor detection reaction device, the level value of urea soln in the liquidometer detection reaction device, above-mentioned pressure, temperature, liquid level information can teletransmission arrive supervisory control desk, supervisory control desk is by implementing the adjustment to the electric heating tube output rating, to satisfy the demand of different system ammonia amounts to the control of electrical heating controller.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model adopts electric heating tube to substitute steam U type pipe as the needed thermal source of hydrolysis of urea system ammonia, electric heating tube is soaked in the urea soln fully, urea soln is heated evenly between coil pipe, add that inner water conservancy diversion setting can allow inner organized circulation, enhancing heat transfer has improved heat transfer efficiency.
(2) electric heating tube of the present utility model can conveniently take out and clean and change, and the while is the easy cleaning inside reactor more.
(3) the utility model can be accomplished the real-time monitoring to temperature and pressure by the control of temperature sensor and pressure-detecting device, regulates the power of electric heating tube in real time, can satisfy the needs of different amonia yields well.
Description of drawings
Fig. 1 is a synoptic diagram of the present utility model.
Pairing Reference numeral is in the accompanying drawing: 1, reactor body; 11, product gas flushing mouth; 12, urea soln inlet; 13, interface of the level gauge; 14, safety valve; 15, tapping valve; 16, temperature sensor; 17, thermometer; 18, product gas outlet pipe; 2, electrical heating controller; 3, electric heating tube; 4, horizontal base.
Embodiment
Below with reference to Figure of description and specific embodiment the utility model is described in further details.
As shown in Figure 1, a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of the present utility model comprises reactor body 1, and this reactor body 1 outer wall is provided with product gas outlet pipe 18 and urea soln inlet 12; Also comprise electrical heating controller 2 and at least one electric heating tube 3 that is arranged on reactor body 1 inside, wherein, electrical heating controller 2 links to each other with electric heating tube 3 by cable.In the present embodiment, product gas mainly is meant ammonia.The main fit system of each parts is: system ammonia raw material--urea soln adds in the reactor body 1 by urea soln inlet 12, soaks electric heating tube 3 fully; Electrical heating controller 2 is by the output rating of control electric heating tube 3, and control is to the heating of urea soln, and urea soln heating posthydrolysis becomes ammonia; Ammonia is discharged reactor body 1 by product gas outlet pipe 18.Adopt electrical heating controller 2 as the power supply device in the present embodiment, adopt electric heating tube 3 to replace traditional heat transfer tube, utilize electric energy as the mode that supply energy source replaces traditional steam and hot blast that heat is provided, avoided because of hot blast rate when not enough or conditions such as vapor pressure, temperature do not satisfy can't works better deficiency; Electric heating tube 3 is soaked in the urea soln fully, behind the cold side heated liquid inner carrying out from down to up self-circulation, be heated evenly, heat transfer coefficient is big, urea system ammoniacal liquor is separated the reaction efficiency height, meets big, the big demand of need ammonia load variations of flue gas denitrification system need ammonia amount.
On the basis of embodiment 1, above-mentioned reactor body 1 is horizontal cylindrical structure, comprises cylindrical shell and end socket, and two end sockets flange respectively are connected the cylindrical shell both sides; The said products gas outlet pipe 18 and urea soln inlet 12 are separately positioned on the upper and lower end of reactor body 1, and product gas outlet pipe 18 lower ends also are provided with product gas flushing mouth 18.The horizontal cylindrical structure of reactor body 1 can hold more electric heating tube 3 and reaction soln, can separate and store more ammonia down with isometric(al), increases system ammonia amount.End socket adopts flange to be connected with cylindrical shell, is convenient to dismounting, and electric heating tube 3 can take out easily and clean and change, and the while is the easy cleaning inside reactor more.
On the basis of the foregoing description, add thermal control for implementing better, the said products gas outlet pipe 18 is provided with pressure-detecting device, and the force value of measure product gas outlet pipe 18 also shows that the transmission pressure data are to supervisory control desk simultaneously; Reactor body 1 outer wall is provided with temperature sensor 16, thermometer 17, interface of the level gauge 13, temperature sensor 16 transfers to supervisory control desk with temperature data, thermometer 17 is used for showing in real time Current Temperatures, radar type liquid-level gauge is by in the interface of the level gauge 13 insertion reaction device bodies 1, urea soln height in the observing response device body 1 in real time, replenish urea soln as required, and liquid level signal is transferred to supervisory control desk.After supervisory control desk obtains said temperature, pressure, liquid level signal, electrical heating controller 2 is controlled, adjusted the power of electric heating tube 3, to satisfy different system ammonia amount demands.
The tapping valve 15 that also is provided with the safety valve 14 of the safeguard protection that is used for reactor body 1 on the above-mentioned reactor body 1 and is used for urgent emptying, emptying when shutting down.
For keeping the temperature in the reactor body 1 better, reduce heat and scatter and disappear, above-mentioned reactor body 1 hull outside also is provided with thermal insulation layer.
In addition, move and control for ease of the integral body of electrically heated hydrolysis of urea system ammonia reactor equipment, reactor body 1 and electrical heating controller 2 whole skids are on a horizontal base 4.
Below only be preferred implementation of the present utility model, protection domain of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the utility model principle prerequisite should be considered as protection domain of the present utility model.
Claims (8)
1. electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas, comprise reactor body (1), described reactor body (1) outer wall is provided with product gas outlet pipe (18) and urea soln inlet (12), it is characterized in that: also comprise electrical heating controller (2) and be arranged on inner at least one electric heating tube (3) of reactor body (1), described electrical heating controller (2) links to each other with electric heating tube (3) by cable.
2. a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas according to claim 1, it is characterized in that: described reactor body (1) is horizontal cylindrical structure, comprises cylindrical shell and end socket, and end socket is arranged on the cylindrical shell both sides; Described product gas outlet pipe (18) and urea soln inlet (12) are separately positioned on the upper and lower end of reactor body (1).
3. a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas according to claim 2 is characterized in that: described reactor body (1) and the whole skid of electrical heating controller (2) are on a horizontal base (4).
4. according to the arbitrary described a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of claim 1 to 3, it is characterized in that: described product gas outlet pipe (18) is provided with pressure-detecting device.
5. according to the arbitrary described a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of claim 1 to 3, it is characterized in that: described reactor body (1) outer wall is provided with temperature sensor (16) and thermometer (17).
6. according to the arbitrary described a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of claim 1 to 3, it is characterized in that: also comprise radar type liquid-level gauge, described reactor body (1) outer wall is provided with interface of the level gauge (13), and described radar type liquid-level gauge is by in interface of the level gauge (13) the insertion reaction device body (1).
7. according to the arbitrary described a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of claim 1 to 3, it is characterized in that: also be provided with safety valve (14) and tapping valve (15) on the described reactor body (1).
8. according to the arbitrary described a kind of electrically heated hydrolysis of urea system ammonia reactor that is used for denitrating flue gas of claim 1 to 3, it is characterized in that: described reactor body (1) arranged outside has thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145979 CN203095628U (en) | 2013-03-28 | 2013-03-28 | Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320145979 CN203095628U (en) | 2013-03-28 | 2013-03-28 | Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration |
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| CN 201320145979 Expired - Lifetime CN203095628U (en) | 2013-03-28 | 2013-03-28 | Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556146A (en) * | 2014-12-22 | 2015-04-29 | 成都天化化工工程技术有限公司 | Device for rapidly responding to required ammonia amount changes in urea-hydrolysis ammonia preparation and implementation method of device |
| CN111841481A (en) * | 2020-06-03 | 2020-10-30 | 中国原子能科学研究院 | Nitrogen oxide preparation facilities |
| CN113083206A (en) * | 2021-05-12 | 2021-07-09 | 北京未来明能科技有限公司 | Method and device for preparing ammonia by decomposing urea |
-
2013
- 2013-03-28 CN CN 201320145979 patent/CN203095628U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556146A (en) * | 2014-12-22 | 2015-04-29 | 成都天化化工工程技术有限公司 | Device for rapidly responding to required ammonia amount changes in urea-hydrolysis ammonia preparation and implementation method of device |
| CN104556146B (en) * | 2014-12-22 | 2016-08-24 | 成都天化化工工程技术有限公司 | Hydrolysis of urea ammonia quickly responds needs ammonia amount changeable device and its implementation |
| CN111841481A (en) * | 2020-06-03 | 2020-10-30 | 中国原子能科学研究院 | Nitrogen oxide preparation facilities |
| CN113083206A (en) * | 2021-05-12 | 2021-07-09 | 北京未来明能科技有限公司 | Method and device for preparing ammonia by decomposing urea |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU RAISE ENVIRONMENTAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 307 No. 6, building B, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 610041 Patentee after: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 307 No. 6, building B, No. nine Hing Road, Chengdu hi tech Development Zone, Sichuan, 610041 Patentee before: Chengdu Raise Environmental Protection Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electric heating urea hydrolysis ammonia preparation reactor for flue gas denitration Effective date of registration: 20190806 Granted publication date: 20130731 Pledgee: China Minsheng Banking Corp Chengdu branch Pledgor: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2019510000001 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230913 Granted publication date: 20130731 Pledgee: China Minsheng Banking Corp Chengdu branch Pledgor: CHENGDU RAISE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Registration number: Y2019510000001 |