CN2499118Y - Venturi fast reactor - Google Patents
Venturi fast reactor Download PDFInfo
- Publication number
- CN2499118Y CN2499118Y CN 01262482 CN01262482U CN2499118Y CN 2499118 Y CN2499118 Y CN 2499118Y CN 01262482 CN01262482 CN 01262482 CN 01262482 U CN01262482 U CN 01262482U CN 2499118 Y CN2499118 Y CN 2499118Y
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- ammonia
- feeding section
- acid
- reactor
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Abstract
Disclosed is a venturi quick reactor, related to an under-pressure reacting equipment, which is mostly used to produce high-concentration phosphate compound fertilizers. The utility model comprises a feeding section, a mixing reaction section, gas liquid separation and spraying section with an ammonia nozzle tangent to the feeding section. The pipe diameter of gaseous ammonia pipe at the feeding section is determined by ammonia entering speed which is 45 to 55m/s and is no more than one second of the pipe diameter of the feeding section; at the feeding section, an acid nozzle is arranged at a place to make the phosphoric acid or mixed acid of phosphoric acid and sulfuric acid meet at the head of the mixing reaction section after shrinkage confluence; a reactor master pipe and the mixing reaction section is respectively long enough to match production capacity. The utility model can ensure that gaseous ammonia is thoroughly mixed and reacted with the acid at the mixing reaction section which makes the neutralization reaction completed in the reactor by one step without the need to feed ammonia to aminate in other equipment and can benefit maximum to evaporate the moisture by the heat of neutralization reaction.
Description
Technical field: the utility model belongs to technical field of chemical, be specifically related to a kind of consersion unit with pressure, be mainly used in the neutralization reaction of finishing ammonia and phosphoric acid (or mixed acid of phosphoric acid, sulfuric acid) in the high-concentration phosphate compound fertilizers production, produce qualified slip so that subsequent handling is produced the MAP/DAP/NPK composite fertilizer of required grade.
Background technology: in high-concentration phosphate compound fertilizers is produced, often adopt ammonia and phosphoric acid＜or the mixed acid of ammonia and phosphoric acid, sulfuric acid carry out neutralization reaction and produce phosphorus ammonium or ammonium sulphate phosphate slip, further atomize then or be sprayed in the relevant device and the method for further logical ammonia ammonification, produce MAP (MAP)/DAP＜Diammonium phosphate (DAP)/NPK (nitrogen-phosphorus-potassium compound fertilizer).Ammonia and phosphoric acid＜or the mixed acid of ammonia and phosphoric acid, sulfuric acid neutralization reaction generally carry out in neutralization reactor or in the tubular reactor.In neutralization reactor, the neutralization reaction time of ammonia and phosphoric acid (or mixed acid of ammonia and phosphoric acid, sulfuric acid) is about 45 minutes, and phosphorus ammonium that reaction generates or sulphur ammonium can crystallizations, and therefore, the conveying and the stirring of slip have difficulties; Simultaneously, under the normal pressure phosphoric acid (or mixed acid of phosphoric acid and sulfuric acid) can not by the ammonia neutralization reaction to the N/P calibration molecule than MRc＞1.6[MRc=(molecular number one of N and the N molecular number of sulfuric acid reaction)/H
3PO
4Molecular number] because the loss meeting of ammonia sharply increases at this moment.And in general tubular reactor, the reaction time is too short, and hybrid reaction is incomplete, same phosphoric acid (or mixed acid of phosphoric acid and sulfuric acid) can not by the ammonia neutralization reaction to the N/p calibration molecule than MRc＞1.6, otherwise the ammonia loss is also higher.
Summary of the invention: the venturi flashing reactor utilizes the Venturi tube washing to absorb the principle of tail gas and the theory of hydrodynamics eddy current designs, this design can make ammonia and phosphoric acid (or mixed acid of phosphoric acid and sulfuric acid) carry out mixed fully and reaction in the short time, not only can produce the N/P calibration molecule than the arbitrary phosphor ammonium slurry in the 1.0-1.90 scope, also can reduce to the ammonia loss minimum.General MRc＞1.6 are 1.0-1.45, and the ammonia loss is not more than the venturi flashing reactor and always leads to 2.5% of ammonia amount; MRc＞1.85, ammonia loss are not more than the venturi flashing reactor and always lead to 15% of ammonia amount.
The utility model mainly comprises feeding section, hybrid reaction section, gas-liquid separation and sprays section, ammonia nozzle and feeding section are tangent, it is characterized in that the feeding section diameter of gaseous ammonia tube according to gaseous ammonia intake velocity 45-55m/s and definite, and be no more than 1/2 of feeding section caliber; At feeding section, sour shower nozzle place can make phosphoric acid/or the mixed acid of phosphoric acid and sulfuric acid shrink and intersect at hybrid reaction section internal diameter head place after converging; Reactor house steward and hybrid reaction section have respectively and the corresponding sufficient length of production capacity.
Specifically the utility model is compared with same category of device (mainly being the Spain ESPINDESA of TR company single tube tubular reactor), has the following advantages:
1, at feeding section, gas ammonia is reinforced with tangential direction.Diameter of gaseous ammonia tube is according to gaseous ammonia intake velocity 45-55m/s and definite, and must not surpass 1/2 of feeding section caliber, guarantee the rotation after gas ammonia enters the venturi flashing reactor.Though the Spain ESPINDESA of TR company single tube reactor ammonia also is reinforced with tangential direction, admission velocity does not require, and its ammonia pipe design caliber is above feeding section caliber 1/2.
2, at feeding section, the design of sour shower nozzle intersects at hybrid reaction section internal diameter head place after phosphoric acid (or mixed acid of phosphoric acid and sulfuric acid) contraction is converged, and its eddy current that utilizes gas ammonia to produce is sucked.And the Spain's ESPINDESA of TR company single tube reactor does not require this.
3, this total reactor length corresponding with production output (as shown in table 1).Guaranteeing maximum ammonia load (also claiming the ammonification volume) [DAP-25gNH
3/ (cm
3.h) MAP-30gNH
3/ (cm
3.h)] under the condition, the length of the hybrid reaction section that should as far as possible extend is to improve the performance level of mixing and reacting.The Spain ESPINDESA of TR company single tube reactor designs maximum ammonia load greater than 35 gNH when producing DAP
3/ (cm
3.h).
The table 1. venturi flashing reactor total length and the output table of comparisons
| Production capacity (t/h) | Flashing reactor total length (mm) |
| 15 | 7800 |
| 36 | 10500 |
| 67.5 | 10500 |
| 90 | 10500 |
Above-mentioned feature can guarantee that gas ammonia and acid fully mix and react in venturi flashing reactor hybrid reaction section, and finished in neutralization reaction step in the venturi flashing reactor of ammonia and acid, do not need in miscellaneous equipment further logical ammonia ammonification, and can accomplish that big limit utilizes neutralization reaction heat to come transpiring moisture.
Description of drawings: accompanying drawing 1 is the utility model structural representation sketch; Accompanying drawing 2 is the C-C profile of accompanying drawing 1.In the accompanying drawing, the 1-feeding section; 2-hybrid reaction section; 3-gas-liquid separation and sprinkling section; The 4-ammonia nozzle; 5-acid shower nozzle; The 6-flange gasket; 7-ammonia process orchid.
The specific embodiment: the utility model is described in detail below in conjunction with accompanying drawing.It mainly comprises feeding section 1, hybrid reaction section 2, gas-liquid separation and sprays section 3, and ammonia nozzle 4 is tangent with feeding section 1, and its feeding section 1 diameter of gaseous ammonia tube is according to gaseous ammonia intake velocity 45-55m/s and definite, and is no more than 1/2 of feeding section 1 caliber; At feeding section 1, sour shower nozzle 5 place can make phosphoric acid/or the mixed acid of phosphoric acid and sulfuric acid shrink and intersect at hybrid reaction section 2 internal diameter head places after converging; Reactor house steward and hybrid reaction section 2 have respectively and the corresponding sufficient length of production capacity.
Claims (1)
1, a kind of venturi flashing reactor, mainly comprise feeding section, hybrid reaction section, gas-liquid separation and spray section, ammonia nozzle and feeding section are tangent, it is characterized in that the feeding section diameter of gaseous ammonia tube according to gaseous ammonia intake velocity 45-55m/s and definite, and are no more than 1/2 of feeding section caliber; At feeding section, sour shower nozzle place can make phosphoric acid/or the mixed acid of phosphoric acid and sulfuric acid shrink and intersect at hybrid reaction section internal diameter head place after converging; Reactor house steward and hybrid reaction section have respectively and the corresponding sufficient length of production capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262482 CN2499118Y (en) | 2001-08-31 | 2001-08-31 | Venturi fast reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01262482 CN2499118Y (en) | 2001-08-31 | 2001-08-31 | Venturi fast reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2499118Y true CN2499118Y (en) | 2002-07-10 |
Family
ID=33670217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01262482 Expired - Fee Related CN2499118Y (en) | 2001-08-31 | 2001-08-31 | Venturi fast reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2499118Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357018C (en) * | 2005-06-07 | 2007-12-26 | 蒋遂安 | Quick reactor and its method |
-
2001
- 2001-08-31 CN CN 01262482 patent/CN2499118Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357018C (en) * | 2005-06-07 | 2007-12-26 | 蒋遂安 | Quick reactor and its method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiang Shouliang Document name: payment instructions |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |