CN202729806U - External circumfluence preheating device - Google Patents
External circumfluence preheating device Download PDFInfo
- Publication number
- CN202729806U CN202729806U CN 201220263337 CN201220263337U CN202729806U CN 202729806 U CN202729806 U CN 202729806U CN 201220263337 CN201220263337 CN 201220263337 CN 201220263337 U CN201220263337 U CN 201220263337U CN 202729806 U CN202729806 U CN 202729806U
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- circumfluence
- external
- phosphoric acid
- outlet
- preheating device
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Abstract
The utility model discloses an external circumfluence preheating device which comprises an external circumfluence system and a phosphoric acid preheating device. The external circumfluence system comprises an external circumfluence evaporator and an external circumfluence axial flow pump, wherein the external circumfluence evaporator comprises a circulating liquid inlet, a circulating liquid outlet, an monoammonium phosphate (MAP) material slurry external circumfluence outlet and an external circumfluence secondary steam outlet. The circulating liquid outlet is connected with the circulating liquid inlet through the external circumfluence axial flow pump, an ammonia gas inlet is arranged on the outlet pipe of the external circumfluence axial flow pump, and a hot phosphoric acid inlet is arranged on the inlet pipe of the external circumfluence axial flow pump. The phosphoric acid preheating device comprises a cold phosphoric acid inlet, a hot phosphoric acid outlet, an MAP material slurry preheating device inlet and an MAP material slurry preheating device outlet, wherein the hot phosphoric acid outlet of the phosphoric acid preheating device is connected with the hot phosphoric acid inlet through pipes, and the MAP material slurry external circumfluence outlet of the external circumfluence evaporator is connected with the MAP material slurry preheating device inlet through pipes. The external circumfluence preheating device is simple in structure, and plenty of high grade secondary steam can be generated by the external circumfluence system after the phosphoric acid is preheated, and therefore the energy consumption can be reduced, and the external circumfluence preheating device is beneficial to the reduction of the producing cost.
Description
Technical field
The utility model relates to phosphorus ammonium production unit field, is specifically related to a kind of outside circulation primary heater unit.
Background technology
In phosphorus ammonium especially monoammonium phosphate (MAP) production process, enter the phosphoric acid (approximately 40 ℃) of outside circulation system, gas ammonia and phosphoric acid carry out neutralization reaction, be warmed up to neutralization reaction slurry temperature (approximately 105 ℃) so reaction heat is most of with raw material phosphor acid (approximately 40 ℃), remaining small portion reaction heat is for generation of the outside circulation secondary steam, because the utilization of Heat of Reaction rate is low, so that the outside circulation secondary steam amount that produces is few and grade is low.
Summary of the invention
The purpose of this utility model just is to address the above problem, a kind of outside circulation primary heater unit is provided, the process that makes gas ammonia and phosphoric acid neutralization reaction (being called for short the propylhomoserin neutralization reaction) generate the MAP slip can be carried out under comparatively high temps, has improved quantity of steam and the steam grade of outside circulation secondary system steam.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of outside circulation primary heater unit comprises outside circulation system and phosphoric acid preheater, it is characterized in that: described outside circulation system comprises outside circulation vaporizer and outside circulation propeller pump; Described outside circulation vaporizer comprises circulation fluid entrance, circulation fluid outlet, the outlet of MAP slip outside circulation and the outlet of outside circulation secondary steam; Described circulation fluid outlet is connected by the outside circulation propeller pump with the circulation fluid entrance; The outlet conduit of described outside circulation propeller pump is provided with the gas ammonia entrance; The inlet duct of described outside circulation propeller pump is provided with hot phosphoric acid entrance; Described phosphoric acid preheater comprises cold phosphoric acid entrance, the outlet of hot phosphoric acid, MAP slip preheater entrance and the outlet of MAP slip preheater; The hot phosphoric acid outlet of phosphoric acid preheater is connected by pipeline with hot phosphoric acid entrance; The MAP slip outside circulation outlet of described outside circulation vaporizer is connected by pipeline with MAP slip preheater entrance.
The utility model has the advantage of: 1, the utility model apparatus structure is simple, the outside MAP slip outside circulation of circulation system outlet arranges the phosphoric acid preheater, utilize the high temperature MAP slip that generates that the phosphoric acid that enters the outside circulation system is carried out preheating, improve the phosphoric acid temperature; 2, by the preheating to phosphoric acid, the propylhomoserin neutralization reaction heat that makes discharges under a high position, and most of propylhomoserin neutralization reaction heat all is used to produce steam, has greatly improved quantity of steam and the steam grade of outside circulation secondary steam, can reduce energy consumption, be conducive to reduce production costs.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
As shown in Figure 1, a kind of outside circulation primary heater unit comprises outside circulation system and phosphoric acid preheater 3, and described outside circulation system comprises outside circulation vaporizer 1 and outside circulation propeller pump 2; Described outside circulation vaporizer 1 comprises circulation fluid entrance 4, circulation fluid outlet 5, the outlet 6 of MAP slip outside circulation and outside circulation secondary steam outlet 7; Described circulation fluid outlet 5 is connected by outside circulation propeller pump 2 with circulation fluid entrance 4; The outlet conduit of described outside circulation propeller pump 2 is provided with gas ammonia entrance 8; The inlet duct of described outside circulation propeller pump 2 is provided with hot phosphoric acid entrance 9; Described phosphoric acid preheater 3 comprises cold phosphoric acid entrance 10, hot phosphoric acid outlet 11, MAP slip preheater entrance 12 and MAP slip preheater outlet 13; The hot phosphoric acid outlet 11 of phosphoric acid preheater 3 and hot phosphoric acid entrance 9 are connected by pipeline; The outlet 6 of the MAP slip outside circulation of described outside circulation vaporizer 1 and MAP slip preheater entrance 12 are connected by pipeline.
Claims (1)
1. an outside circulation primary heater unit comprises outside circulation system and phosphoric acid preheater (3), it is characterized in that: described outside circulation system comprises outside circulation vaporizer (1) and outside circulation propeller pump (2); Described outside circulation vaporizer (1) comprises circulation fluid entrance (4), circulation fluid outlet (5), MAP slip outside circulation outlet (6) and outside circulation secondary steam outlet (7); Described circulation fluid outlet (5) is connected by outside circulation propeller pump (2) with circulation fluid entrance (4); The outlet conduit of described outside circulation propeller pump (2) is provided with gas ammonia entrance (8); The inlet duct of described outside circulation propeller pump (2) is provided with hot phosphoric acid entrance (9); Described phosphoric acid preheater (3) comprises cold phosphoric acid entrance (10), hot phosphoric acid outlet (11), MAP slip preheater entrance (12) and MAP slip preheater outlet (13); The hot phosphoric acid outlet (11) of phosphoric acid preheater (3) is connected by pipeline with hot phosphoric acid entrance (9); The MAP slip outside circulation outlet (6) of described outside circulation vaporizer (1) is connected by pipeline with MAP slip preheater entrance (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263337 CN202729806U (en) | 2012-06-02 | 2012-06-02 | External circumfluence preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220263337 CN202729806U (en) | 2012-06-02 | 2012-06-02 | External circumfluence preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202729806U true CN202729806U (en) | 2013-02-13 |
Family
ID=47655526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220263337 Expired - Fee Related CN202729806U (en) | 2012-06-02 | 2012-06-02 | External circumfluence preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202729806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604624A (en) * | 2020-11-16 | 2021-04-06 | 湖北第二师范学院 | External circulation ammonification reaction experimental equipment and method for analyzing factors influencing external circulation ammonification reaction by using same |
-
2012
- 2012-06-02 CN CN 201220263337 patent/CN202729806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604624A (en) * | 2020-11-16 | 2021-04-06 | 湖北第二师范学院 | External circulation ammonification reaction experimental equipment and method for analyzing factors influencing external circulation ammonification reaction by using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150602 |
|
| EXPY | Termination of patent right or utility model |