CN201206120Y - Urea molten tank with ammonia ion concentration detection apparatus - Google Patents
Urea molten tank with ammonia ion concentration detection apparatus Download PDFInfo
- Publication number
- CN201206120Y CN201206120Y CNU2007201595077U CN200720159507U CN201206120Y CN 201206120 Y CN201206120 Y CN 201206120Y CN U2007201595077 U CNU2007201595077 U CN U2007201595077U CN 200720159507 U CN200720159507 U CN 200720159507U CN 201206120 Y CN201206120 Y CN 201206120Y
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- CN
- China
- Prior art keywords
- housing
- urea
- discharge port
- ion concentration
- heating tube
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a urea smelt tank with an ammonia ion concentration detecting device, which comprises a housing with a feed port and a discharge port. A feeding distributor and a spiral and ring-shaped heating tube are arranged in the housing; and the heating tube has a steam inlet and a condensed water outlet. The tank is characterized in that the detecting device is installed on the housing and a detecting instrument is connected to the signal input end thereof; and the signal output end is connected with a magnet valve arranged at the discharge port. The utility model controls the on-off of the magnet valve arranged at the discharge port through detecting the ammonia concentration in the smelt tank, thereby decreasing the generation of biuret, reducing the loss of ammonia, and realizing the preparation of high-quality urea liquid and auto-control in production process.
Description
Technical field
The utility model relates to a kind of urea liquid production unit, specifically a kind of urea melting groove that has the ammonium ion concentration detection apparatus.
Background technology
In the prior art, the structure formation of the urea melting device that chemical fertilizers production producer adopts mostly is the vertical tank that inside is provided with heating tube and feed distributor, has opening for feed and discharge port on its housing, and heating tube has steam-in and condensation-water drain.When the preparation urine, the producer that has also adds a certain amount of water to form urea soln (90～95%) in the urea melting device, since urea soln in groove, have the quite long residence time (〉=20min) or contain 5～10% moisture, the very fast meeting of urea in the urea soln in the urea soln is 100 ℃ of high temperature (〉) and than long residence time (〉=20min) condition, produce rapidly a large amount of biuret (it is unfavorable to the growth of farm crop that employing contains compound fertilizer or granular urea that the higher urine of biuret is processed into, and particularly seedling can be caused serious burning seedling phenomenon); Simultaneously, hydrolysis (CO (NH can take place rapidly in urea under the effect of moisture
2)+H
2O=CO
2+ 2NH
3), overflow a large amount of ammonia, the result causes the plain loss of ammonia on the one hand, and hydrolysis makes that the vapour pressure of ammonia descends in the urine and causes the further generation of biuret in the urine on the other hand.Like this, what produce is a kind of urine of poor quality, is not suitable for using in the production of urine slurry process urea-based compound fertilizer.
Summary of the invention
The purpose of this utility model provides a kind of urea liquid production process that realizes and controls automatically, the urea melting groove that has the ammonium ion concentration detection apparatus of preparation high quality urea liquid.
For achieving the above object, the utility model is by the following technical solutions:
The urea melting groove that has the ammonium ion concentration detection apparatus described in the utility model, comprise the housing that has opening for feed and discharge port, be provided with the heating tube of feed distributor and spiral ring in the housing, heating tube has steam-in and condensation-water drain, its characteristics are: proofing unit is installed on the housing, its signal input part is connected with detector, and signal output part is connected with the magnetic valve that is installed in the discharge port place.
Owing to adopted technique scheme, the utility model detects the opening and closing of the magnetic valve at the ammonium ion concentration control discharge port place in the fusion tank by proofing unit, reduced the generation of biuret, reduced the loss of nitrogen, can prepare high-quality urea liquid, and realize the automatic control of production process.
Description of drawings
Accompanying drawing is the structural representation of a kind of embodiment of the utility model.
Embodiment
The utility model will be further described below in conjunction with the drawings and specific embodiments.
A kind of urea melting groove that has the ammonium ion concentration detection apparatus, as shown in drawings, comprise the housing 1 that has opening for feed 4,7 and discharge port 11, be provided with the heating tube 2 of feed distributor 6 and spiral ring in the housing 1, heating tube 2 has steam-in 3 and condensation-water drain 9, proofing unit 8 is installed on the housing 1, and its signal input part is connected with detector, and signal output part is connected with the magnetic valve 10 that is installed in discharge port 11 places.
During use, solid particulate urea is added from opening for feed 4,7 by measuring apparatus metering back, feed distributor 6 is rotation in the horizontal direction under the drive of transmission mechanism 5, makes solid urea particle can be heated pipe 2 heating equably.Stable heating steam 3 enters heating tube 2 from the steam-in, heating tube provides heat endlessly, solid particulate urea moment in the urea melting groove is finished fusion, meanwhile, can evaporate the part ammonia, when ammonium ion concentration reached the set(ting)value of proofing unit 8, proofing unit output signal control magnetic valve 10 was opened, and urea liquid flows out from discharge port 11 at once.Like this, the Biuret Content in the urea liquid that obtains is lower, and the loss of nitrogen is also smaller.
In above-mentioned process, steam through with the solid urea particle heat exchange after become water of condensation, flow out from condensation-water drain 9.
Claims (1)
1, a kind of urea melting groove that has the ammonium ion concentration detection apparatus, comprise the housing (1) that has opening for feed (4,7) and discharge port (11), be provided with the heating tube (2) of feed distributor (6) and spiral ring in the housing (1), heating tube (2) has steam-in (3) and condensation-water drain (9), it is characterized in that: proofing unit (8) is installed on the housing (1), its signal input part is connected with detector, signal output part be installed in the magnetic valve (10) that discharge port (11) locates and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201595077U CN201206120Y (en) | 2007-12-27 | 2007-12-27 | Urea molten tank with ammonia ion concentration detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201595077U CN201206120Y (en) | 2007-12-27 | 2007-12-27 | Urea molten tank with ammonia ion concentration detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206120Y true CN201206120Y (en) | 2009-03-11 |
Family
ID=40465188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201595077U Expired - Fee Related CN201206120Y (en) | 2007-12-27 | 2007-12-27 | Urea molten tank with ammonia ion concentration detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206120Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179065A (en) * | 2011-04-08 | 2011-09-14 | 江西稀有金属钨业控股集团有限公司 | Warmer of wet-process extracting groove and warming method |
| CN105431724A (en) * | 2014-04-30 | 2016-03-23 | 长沙三相医疗器械有限公司 | Ammonia trap |
-
2007
- 2007-12-27 CN CNU2007201595077U patent/CN201206120Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179065A (en) * | 2011-04-08 | 2011-09-14 | 江西稀有金属钨业控股集团有限公司 | Warmer of wet-process extracting groove and warming method |
| CN105431724A (en) * | 2014-04-30 | 2016-03-23 | 长沙三相医疗器械有限公司 | Ammonia trap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20111227 |