CN217273568U - Flow guide structure of material passing pipe in ammonium phosphate neutralization and concentration process - Google Patents
Flow guide structure of material passing pipe in ammonium phosphate neutralization and concentration process Download PDFInfo
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- CN217273568U CN217273568U CN202221008119.XU CN202221008119U CN217273568U CN 217273568 U CN217273568 U CN 217273568U CN 202221008119 U CN202221008119 U CN 202221008119U CN 217273568 U CN217273568 U CN 217273568U
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- passing pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a guide structure of a material passing pipe of ammonium phosphate neutralization and concentration processes. The method comprises the following steps that material passing through a material passing pipe is conducted between circulating pumps of two adjacent units of an ammonium phosphate production line and between circulating pumps of an effect concentration unit I and a neutralization unit II, the material passing pipe is a straight pipe which is obliquely arranged, an oblique pressurizing guide plate is arranged in a material discharging pipe, the lower end of the pressurizing guide plate is overlapped with the upper edge of the upper port of the material passing pipe, and the upper end of the pressurizing guide plate extends to the central line of the material discharging pipe along the oblique direction of the material passing pipe; an inclined decompression guide plate is arranged in the feeding pipe, the upper end of the decompression guide plate is overlapped with the outer edge of the lower end of the material passing pipe, and the lower end of the decompression guide plate extends to the central line of the feeding pipe along the inclined direction of the material passing pipe. The material passing pipe of the utility model adopts a straight pipe type, and the pressure guide plate guides the material to enter the material passing pipe; the pressure reduction guide plate prevents the materials at the inlet of the circulating pump from entering the material passing pipe and the material at the outlet of the circulating pump to cause resistance and disturbance, and the scaling speed is delayed.
Description
Technical Field
The utility model relates to wet process ammonium phosphate production equipment, in particular to a guide structure of a material passing pipe of ammonium phosphate neutralization and concentration processes.
Background
In wet ammonium phosphate production, the concentration of the phosphoric acid obtained in a phosphoric acid section is low, generally between 20 and 24 percent, and neutralization and concentration are key processes in ammonium phosphate production. The neutralization is to react phosphoric acid with ammonia to generate ammonium phosphate slurry, and the ammonium phosphate slurry is generally divided into a first neutralization unit and a second neutralization unit; the concentration is to heat phosphoric acid slurry by steam in a heater, and flash evaporate part of water in the slurry in a negative pressure flash chamber, and the concentration is generally divided into an I-effect concentration unit, an II-effect concentration unit and an III-effect concentration unit. The water content in the slurry is sprayed into a powdery ammonium phosphate tower (or a granulator) after reaching the requirement to produce powdery ammonium phosphate (granular ammonium phosphate). The neutralization process comprises a circulating system consisting of a circulating pump, a flash chamber and a pipeline, and the concentration process comprises a circulating system consisting of a circulating pump, a slurry heater, a flash chamber, an atmospheric condenser, a pipeline and the like. After one unit is circulated to a certain control index, the material is required to be fed to the next unit (part of slurry is conveyed), and the material is generally fed to the inlet of the circulating pump of the next unit from the outlet of the circulating pump. The material passing process comprises the following steps: the first neutralization to III effect, the third to II effect, the second to I effect, the first to two neutralization and passing. The ammonium phosphate slurry has the characteristics that when the cooling speed is high, the composite potassium salt and sodium salt of the slurry are easy to quickly scale in a pipeline, the cleaning after scaling is very difficult, and the continuous operation of a system causes great difficulty.
The current material passing mode comprises the following steps: the type of the material passing intermediate tank and the material passing pump is called material passing pump for short; the pressure difference of the circulating pump between the two units is utilized to directly feed the material through a pipeline and a valve for control, which is called material passing pipe for short. The material passing pump has the advantages of too fast material passing, slow cooling and difficult scaling. But the occupied space is large, and the layout of the equipment is messy; the long-term operation of the material passing pump increases large power consumption. The material passing pipe utilizes the pressure difference of a circulating pump, no additional power is added, and the equipment layout is clear; but the material passing speed is slow, the temperature reduction is fast, and the pipeline is easy to scale; in order to ensure the stable material passing amount after the pipeline is scaled, the method of increasing the diameter of the material passing pipe is generally adopted, but because the diameter of the pipeline is increased, the flow velocity of the materials in the pipeline is reduced, the scaling speed of the pipeline is increased, and the material passing pipe is often blocked. Therefore, the increase of the diameter of the feed pipe during feeding of the feed pipe is in opposition and contradiction to the scaling speed of the feed pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing a ammonium phosphate neutralization and concentrated process's material passing pipe's water conservancy diversion structure, slowing down the speed of material passing pipe scale deposit, improve production efficiency.
The utility model provides a its technical problem, the technical scheme of adoption is:
a flow guide structure of a material passing pipe in ammonium phosphate neutralization and concentration procedures is characterized in that an ammonium phosphate production line sequentially comprises a secondary neutralization unit, a primary neutralization unit, a tertiary effect concentration unit, a secondary effect concentration unit and a primary effect concentration unit, material passing through the material passing pipe is arranged between circulating pumps of two adjacent units and between circulating pumps of the primary effect concentration unit and the secondary neutralization unit, two ends of the material passing pipe are respectively communicated with a discharge pipe of an incoming material circulating pump and a feed pipe of a material removing circulating pump, the material passing pipe is a straight pipe which is obliquely arranged, an oblique pressurizing guide plate is arranged in the discharge pipe, the lower end of the pressurizing guide plate is coincided with the upper edge of the upper port of the material passing pipe, and the upper end of the pressurizing guide plate extends to the central line of the discharge pipe along the oblique direction of the material passing pipe; the device is characterized in that an inclined pressure reduction guide plate is arranged in the feeding pipe, the upper end of the pressure reduction guide plate is overlapped with the outer edge of the lower port of the material passing pipe, and the lower end of the pressure reduction guide plate extends to the central line of the feeding pipe along the inclined direction of the material passing pipe.
Adopt above-mentioned technical scheme the utility model discloses compare with prior art, the intentional effect is:
the material passing pipe is in a straight pipe type to reduce resistance, and the pressurizing guide plate guides materials to enter the material passing pipe; the pressure reduction guide plate prevents the inlet material of the circulating pump from causing resistance and disturbance to the outlet material of the material passing pipe from entering the circulating pump, so that the scaling speed is delayed, and the production efficiency is improved; simple structure is practical, and unpowered consumption reduces the disposable input of equipment.
Further, the utility model discloses an optimization scheme is:
the pressure-increasing guide plate and the pressure-reducing guide plate are flat plates or arc plates.
And the material passing pipe is provided with a valve.
The bottom surface of the material passing pipe is provided with a plurality of cleaning pipes arranged at intervals, an included angle is formed between each cleaning pipe and the material passing pipe, and the blind plate of the mounting flange is sealed at the lower port of each cleaning pipe.
And the flow guide surfaces of the pressurization flow guide plate and the decompression flow guide plate are provided with flow guide grooves.
The guide grooves are radially arranged.
Drawings
FIG. 1 is a schematic view of a production process of an embodiment of the present invention;
FIG. 2 is a schematic view of a connecting structure of a material passing pipe according to an embodiment of the present invention;
fig. 3 is a schematic view of a material passing pipe and a cleaning pipe according to an embodiment of the present invention.
In the figure: a neutralization unit 1; a circulating pump 1-1; a neutralization flash chamber 1-2; 1-3 of a secondary steam buffer tank; a second neutralization unit 2; a secondary neutralization flash chamber 2-1; a III-effect concentration unit 3; a heater 3-1; 3-2 of a concentration flash chamber; a second effect concentration unit 4; an I-effect concentration unit 5; an incoming material circulating pump 6; 6-1 of a discharge pipe; a material removing circulating pump 7; a feed pipe 7-1; a feed pipe 8; a supercharging deflector 9; a pressure reducing guide plate 10; a ball valve 11; the tube 12 is cleaned.
Detailed Description
The present invention will be further described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the embodiment is a flow guide structure of a material passing pipe of a ammonium phosphate neutralization and concentration process, the neutralization process of a wet ammonium phosphate production line comprises a first neutralization unit 1 and a second neutralization unit 2, the first neutralization unit 1 comprises a circulating pump 1-1, a first neutralization flash chamber 1-2, a secondary steam buffer tank 1-3, a connecting pipeline and the like, the second neutralization unit 2 comprises a circulating pump 1-1, a second neutralization flash chamber 2-1, a connecting pipeline and the like, the second neutralization flash chamber 2-1 of the second neutralization unit 2 is communicated with the first neutralization flash chamber 1-2 of the first neutralization unit 1 through the connecting pipeline, and the top of the first neutralization flash chamber 1-2 is communicated with the secondary steam buffer tank 1-3 through the connecting pipeline.
The concentration process is carried out after the neutralization process, the concentration process sequentially comprises a III-effect concentration unit 3, a II-effect concentration unit 4, an I-effect concentration unit 5 and the like, the III-effect concentration unit 3 and the II-effect concentration unit 4 are respectively formed by a circulating pump 1-1, a heater 3-1, a concentration flash evaporation chamber 3-2, a connecting pipeline and the like, and a discharge pipe of the circulating pump 1-1 is communicated with the concentration flash evaporation chamber 3-2 through the heater 3-1. The I-effect concentration unit 5 is composed of a circulating pump 1-1, a heater 3-1, a concentration flash evaporation chamber 3-2, a secondary steam buffer tank 1-3, a connecting pipeline and the like, a discharge pipe of the circulating pump 1-1 is communicated with the concentration flash evaporation chamber 3-2 through the heater 3-1, and the top of the concentration flash evaporation chamber 3-2 is communicated with the secondary steam buffer tank 1-3 through the pipeline. Circulation pumps 1-1 of two adjacent units in the two-effect concentration unit 2, the one-effect neutralization unit 1, the three-effect concentration unit 3, the two-effect concentration unit 4 and the one-effect concentration unit 5 are fed through a material passing pipe 8, circulation pumps 1-1 of the one-effect concentration unit 5 and circulation pumps 1-1 of the two-effect concentration unit 2 are fed through the material passing pipe 8, and the circulation pumps 1-1 at two ends of the material passing pipe 8 are an incoming material circulation pump 6 and a material removal circulation pump 7 respectively.
A discharging pipe 6-1 of an incoming material circulating pump 6 is vertically arranged (shown in figure 2), a feeding pipe 7-1 of a material removing circulating pump 7 is horizontally arranged, a material passing pipe 8 is obliquely arranged, the discharging pipe 6-1 and the feeding pipe 7-1 are communicated by the material passing pipe 8, the material passing pipe 8 is a straight pipe, and the straight pipe can reduce the resistance of slurry and slow down the scaling speed. An inclined supercharging guide plate 9 is arranged in the discharge pipe 6-1, the lower end of the supercharging guide plate 9 is overlapped with the upper edge of the upper port of the material passing pipe 8, the upper end of the supercharging guide plate 9 extends to the central line of the discharge pipe 6-1 along the inclined direction of the material passing pipe 8, and the supercharging guide plate 9 blocks part of the section of the discharge pipe 6-1 of the incoming material circulating pump 6 and guides the material to enter the material passing pipe 8. An inclined pressure reduction guide plate 10 is arranged in the feeding pipe 7-1, the upper end of the pressure reduction guide plate 10 is superposed with the outer edge of the lower port of the material passing pipe 8, the lower end of the pressure reduction guide plate 10 extends to the central line of the feeding pipe 7-1 along the inclined direction of the material passing pipe 8, and the pressure reduction guide plate 10 blocks part of the cross section of the feeding pipe 7-1 of the material removing circulating pump 7 to prevent the inlet material of the feeding pipe 7-1 of the material removing circulating pump 7 from causing resistance and disturbance to the inlet material of the outlet material of the material passing pipe 8. The pressure-increasing guide plate 9 and the pressure-reducing guide plate 10 are flat plates or arc plates, guide grooves (not shown in the figure) are arranged on the guide surfaces of the two pressure-reducing guide plates, the guide grooves are radial, and the material passing pipe 8 is provided with a ball valve 11. The included angle between the pressurizing guide plate 9 and the central line of the discharge pipe 6-1 and the included angle between the decompressing guide plate 10 and the central line of the feed pipe 7-1 can be adjusted according to the flow.
A plurality of cleaning pipes 12 communicated with the cleaning pipes are arranged on the bottom surface of the material passing pipe 8, included angles are formed between the cleaning pipes 12 and the material passing pipe 8, a blind plate is arranged on the lower end of each cleaning pipe 12, and after the cleaning pipe 12 is used for a long time, a cleaning tool is used for cleaning the inner wall of the material passing pipe 8 conveniently through the cleaning pipes 12.
The material passing pipe of the utility model adopts a straight pipe type to reduce resistance, and a pressurizing guide plate in the discharge pipe guides materials to enter the material passing pipe; the pressure reduction guide plate in the feeding pipe prevents the inlet material of the circulating pump from causing resistance and disturbance to the outlet material of the material passing pipe to enter the circulating pump, so that the scaling speed is delayed, and the production efficiency is improved; simple structure is practical, and no power consumption reduces the disposable input of equipment.
The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all structural equivalents made by using the contents of the specification and drawings are included in the scope of the present invention.
Claims (6)
1. The utility model provides a water conservancy diversion structure of material passing pipe of ammonium phosphate neutralization and concentrated process, the ammonium phosphate production line includes in two in proper order and the unit, in one and the unit, III imitates concentrated unit, II imitates concentrated unit and I imitates concentrated unit, between the circulating pump of two adjacent units, I imitates passing pipe punishment in passing between the circulating pump of concentrated unit and two and the unit, the both ends of material passing pipe communicate respectively the discharging pipe of incoming material circulating pump and the inlet pipe that goes the material circulating pump, its characterized in that:
the feeding pipe is a straight pipe which is obliquely arranged, an oblique pressurization guide plate is arranged in the discharging pipe, the lower end of the pressurization guide plate is overlapped with the upper edge of the upper port of the feeding pipe, and the upper end of the pressurization guide plate extends to the central line of the discharging pipe along the oblique direction of the feeding pipe;
the device is characterized in that an inclined pressure reduction guide plate is arranged in the feeding pipe, the upper end of the pressure reduction guide plate is overlapped with the outer edge of the lower port of the material passing pipe, and the lower end of the pressure reduction guide plate extends to the central line of the feeding pipe along the inclined direction of the material passing pipe.
2. The flow guide structure of the feeding pipe in the ammonium phosphate neutralization and concentration process according to claim 1, which is characterized in that: the pressure-increasing guide plate and the pressure-reducing guide plate are flat plates or arc plates.
3. The flow guide structure of the feeding pipe in the ammonium phosphate neutralization and concentration process according to claim 1, which is characterized in that: and the material passing pipe is provided with a valve.
4. The flow guide structure of the feeding pipe in the ammonium phosphate neutralization and concentration process according to claim 1, which is characterized in that: the bottom surface of the material passing pipe is provided with a plurality of cleaning pipes arranged at intervals, an included angle is formed between each cleaning pipe and the material passing pipe, and the blind plate of the mounting flange is sealed at the lower port of each cleaning pipe.
5. The flow guide structure of the feeding pipe in the ammonium phosphate neutralization and concentration process according to claim 1, which is characterized in that: and the flow guide surfaces of the pressurization flow guide plate and the decompression flow guide plate are provided with flow guide grooves.
6. The flow guide structure of the feed pipe in the ammonium phosphate neutralization and concentration process according to claim 5, characterized in that: the guide grooves are radially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221008119.XU CN217273568U (en) | 2022-04-28 | 2022-04-28 | Flow guide structure of material passing pipe in ammonium phosphate neutralization and concentration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221008119.XU CN217273568U (en) | 2022-04-28 | 2022-04-28 | Flow guide structure of material passing pipe in ammonium phosphate neutralization and concentration process |
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| Publication Number | Publication Date |
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| CN217273568U true CN217273568U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221008119.XU Active CN217273568U (en) | 2022-04-28 | 2022-04-28 | Flow guide structure of material passing pipe in ammonium phosphate neutralization and concentration process |
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| Country | Link |
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| CN (1) | CN217273568U (en) |
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2022
- 2022-04-28 CN CN202221008119.XU patent/CN217273568U/en active Active
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