CN217127309U - Novel semi-slurry production device for rotary drum compound fertilizer - Google Patents
Novel semi-slurry production device for rotary drum compound fertilizer Download PDFInfo
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- CN217127309U CN217127309U CN202221121035.7U CN202221121035U CN217127309U CN 217127309 U CN217127309 U CN 217127309U CN 202221121035 U CN202221121035 U CN 202221121035U CN 217127309 U CN217127309 U CN 217127309U
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Abstract
The utility model discloses a novel semi-slurry production device of a rotary drum compound fertilizer, which comprises a cylinder body and a driving mechanism; the method is characterized in that: also comprises an ammonia spray shaft, a tubular reactor and a sulfuric acid spray pipe; the barrel is divided into two fixed ends at two ends and a middle rotating part, the rotating part is sealed by fish scales after being sleeved with the fixed ends at the two ends in a sliding way, the two fixed ends of the barrel are fixed on the ground through the fixed seats, and the rotating part of the barrel is connected with the driving mechanism and is provided with two slip ring structures with bottom parts provided with tugs; compared with the traditional process, the production device can improve the granulation efficiency in the production process of the rotary drum compound fertilizer, and the ammonium sulfate prepared by the reaction of the sulfuric acid and the ammonia is used for adjusting the product nutrient, so that the water solubility of the product is increased, and the problem that the content of chloride ions in the product is influenced by adding ammonium chloride is avoided; can produce granular compound fertilizers with different specifications, and has high efficiency and stable product quality.
Description
Technical Field
The utility model relates to a chemical industry technical field, concretely relates to directly rely on MAP solution and ammonia, sulphuric acid and ammonia acid reaction make ammonium phosphate, ammonium sulfate ground paste to realize the device of whitewashing ammoniation granulation in rotary drum granulator.
Background
The rotary drum compound fertilizer is prepared by gathering the main nutrient elements needed by crops, such as N, P, K, etc. by a chemical process method, preparing particles suitable for cultivation by drum granulation in the past and applying the particles into soil; at present, the domestic drum compound fertilizer production method mainly comprises an ammonia acid method, a steam granulation method and a traditional semi-slurry method, and mainly has the problems of irregular and non-round product particles, low strength, poor water solubility of the product and the like due to the difference of production processes and different granulation mechanisms in a core granulation procedure. For example, in the steam granulation method production process, the surfaces of raw materials of all components are wetted by heat brought by steam and a liquid phase, and are rolled, extruded and agglomerated into granules in a drum-type granulator after salts are dissolved by the heat and the liquid phase, but in the process, capillary force among all the components is destroyed along with the removal of water, and the problems of powder removal and the like occur; in the traditional semi-slurry production process, the amount of the used sulfuric acid is limited, the reaction heat in the granulator is low, the dissolving effect of partial salts is poor, and the expected granulation effect cannot be achieved.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a novel semi-slurry production device of a rotary drum compound fertilizer, which comprises a cylinder body, a driving mechanism, an ammonia spray shaft, a tubular reactor and a sulfuric acid spray pipe; the barrel is divided into two fixed ends at two ends and a middle rotating part, the rotating part is sealed by fish scales after being sleeved with the fixed ends at the two ends in a sliding way, the two fixed ends of the barrel are fixed on the ground through the fixed seats, and the rotating part of the barrel is connected with the driving mechanism and is provided with two slip ring structures with bottom parts provided with tugs;
the ammonia spraying shaft transversely penetrates through the cylinder body, and two ends of the ammonia spraying shaft are respectively provided with a bracket for supporting the ammonia spraying shaft; one end of the tubular reactor and one end of the sulfuric acid spray pipe extend into the cylinder body along the direction of the ammonia spray shaft, and the tubular reactor and the sulfuric acid spray pipe are fixedly connected with the ammonia spray shaft through a fixing frame.
Preferably, the tubular reactor and the sulfuric acid spray pipe are positioned below the ammonia spray shaft, and the sulfuric acid spray pipe is positioned below the tubular reactor.
Preferably, the driving mechanism comprises a motor, a hydraulic coupler, a speed reducer and a transmission gear; the motor is connected with the speed reducer through the hydraulic coupler, the speed reducer is connected with the transmission gear, and the transmission gear is arranged on the rotating part of the barrel; the rotating part that drives the barrel anticlockwise rotates.
Preferably, the tubular reactor is composed of a mixing section, an adjusting section and a nozzle section, wherein the mixing section and the adjusting section are made of Teflon-lined steel tubes, the thickness of a Teflon lining of the Teflon-lined steel tubes is more than or equal to 10mm, the length of each pipe fitting is less than or equal to 700mm, and the nozzle section is made of 904L stainless steel tubes.
Preferably, the nozzle section of the tubular reactor is provided with two groups of nozzles, and the spraying angle is 25-45 degrees.
Preferably, the ammonia spraying shaft is provided with four vertically downward ammoniation branch pipes, the lower ends of the ammoniation branch pipes are sealed, and two sides of the lower ends of the ammoniation branch pipes are obliquely provided with nozzles; a spray head is arranged on the sulfuric acid spray pipe; the spray head and the two groups of nozzles are sequentially distributed at three vacant positions among the four ammoniation branch pipes; the lower end of the ammoniation branch pipe is lower than the spray head.
Preferably, a feed inlet is arranged on the fixed end of one end of the cylinder, an exhaust air pipe is arranged at the top of the fixed end of the other end of the cylinder, and a discharge outlet is arranged at the bottom of the fixed end of the cylinder; the feed inlet is connected with the discharge outlet of the bucket elevator; the discharge hole is connected with the feed inlet of the dryer; the waste gas air pipe is connected with an inlet pipe of the scrubber.
Compared with the prior art, the utility model, following beneficial effect has:
compared with the traditional process, the production device does not need to add a granulation adhesive and a filling agent in the production process of the drum compound fertilizer, can fully utilize the characteristic of good viscosity of ammonium phosphate and ammonium sulfate obtained after spraying and mixing by the device to improve granulation efficiency, utilizes the ammonium sulfate prepared by the reaction of sulfuric acid and ammonia to adjust the nutrient of the product, increases the water solubility of the product, and avoids the problem that the content of chloride ions in the product is influenced by adding ammonium chloride; the tubular reactor can be used under high-temperature and strong-corrosion conditions, can produce granular compound fertilizers with different specifications, and has high efficiency and stable product quality.
Drawings
FIG. 1 is a schematic structural diagram of a novel semi-slurry production device for a rotary drum compound fertilizer of the utility model;
FIG. 2 is an internal view of the novel semi-slurry production device of the rotary drum compound fertilizer
FIG. 3 is an enlarged view at A in FIG. 2;
in the figure: the device comprises a motor 1, a fluid coupling 2, a speed reducer 3, a transmission gear 4, a cylinder 5, a fixed seat 6, an ammonia spraying shaft 7, an ammoniation branch pipe 8, a tubular reactor 9, a sulfuric acid spraying pipe 10, a waste gas air pipe 11, a feeding hole 12, a discharging hole 13, a slip ring structure 14, a support 15, a fixed frame 16, a spraying hole 91 and a spray head 101.
Detailed Description
The drawings in the embodiments of the present invention will be combined; to the technical scheme in the embodiment of the utility model, clearly, describe completely:
as shown in fig. 1-3, in an embodiment of the present invention, a novel semi-slurry production apparatus for a drum compound fertilizer comprises a cylinder 5, a driving mechanism, an ammonia spray shaft 7, a tubular reactor 9, and a sulfuric acid spray pipe 10; the barrel 5 is divided into two fixed ends at two ends and a middle rotating part, the rotating part is sealed by fish scales after being sleeved with the fixed ends at two ends in a sliding way, the two fixed ends of the barrel 5 are fixed on the ground through a fixed seat 6, the rotating part of the barrel 5 is connected with a driving mechanism and is provided with two slip ring structures 14 the bottoms of which are provided with tugs;
the ammonia spraying shaft 7 transversely penetrates through the cylinder 5, and two ends of the ammonia spraying shaft 7 are respectively provided with a bracket 15 for supporting the ammonia spraying shaft 7; one end of the tubular reactor 9 and one end of the sulfuric acid spray pipe extend into the cylinder body 5 along the direction of the ammonia spray shaft 7, the tubular reactor 9 and the sulfuric acid spray pipe 10 are fixedly connected with the ammonia spray shaft 7 through a fixing frame 16, and the tubular reactor 9 and the sulfuric acid spray pipe 10 are fixed through the ammonia spray shaft 7.
Specifically, the tubular reactor 9 and the sulfuric acid spray pipe 10 are positioned below the ammonia spray shaft 7, and the sulfuric acid spray pipe 10 is positioned below the tubular reactor 9.
In a specific embodiment of the present invention, the driving mechanism includes a motor 1, a fluid coupling 2, a speed reducer 3, and a transmission gear 4; the motor 1 is connected with a speed reducer 3 through a hydraulic coupler 2, the speed reducer 3 is connected with a transmission gear 4, and the transmission gear 4 is arranged on a rotating part of the barrel 5; the rotating part of the drum 5 rotates counterclockwise.
In a specific embodiment of the utility model, the tubular reactor, divide into mixing section, adjustment section, spout section and constitute, mix section and adjustment section and use lining tetrafluoro steel pipe, its teflon lining thickness is more than or equal to 10mm, pipe fitting length is less than or equal to 700mm, spout section adopts 904L stainless steel pipe.
Specifically, the nozzle section of the tubular reactor is provided with two groups of nozzles 91, and the spraying angle is 25-45 degrees.
As shown in fig. 3, in an embodiment of the present invention, four vertically downward ammoniation branch pipes 8 are arranged on the ammonia spraying shaft 7, the lower ends of the ammoniation branch pipes 8 are sealed, and nozzles are obliquely arranged on two sides of the lower ends; a spray head 101 is arranged on the sulfuric acid spray pipe 10; the spray head 101 and the two groups of spray nozzles 91 are sequentially distributed at three vacant positions among the four ammoniation branch pipes 8, so that the mixture is more uniform; the lower end of the ammoniation branch pipe 8 is lower than the spray head 101.
In a specific embodiment of the present invention, a feed inlet 12 is installed on the fixed end of one end of the cylinder 5, an exhaust air pipe 11 is installed on the top of the fixed end of the other end, and a discharge outlet 13 is installed on the bottom; the feed inlet 12 is connected with a discharge port of a bucket elevator; the discharge port 13 is connected with a feed port of the dryer; the exhaust gas duct 11 is connected to the scrubber inlet duct.
Specifically, during production, MAP solution with the concentration of 30-40% and the temperature of more than or equal to 70 ℃ is preferentially prepared and is conveyed to a tubular reactor 9 through a centrifugal pump to perform neutralization reaction with liquid ammonia from an outer tube and concentrated sulfuric acid from a sulfuric acid storage tank, the MAP solution and the sulfuric acid are controlled according to the volume ratio of 4:1, liquid ammonia with equal proportion is added through an ammonia spray shaft 7 and an ammoniation branch pipe 8 according to the neutralization degree of slurry, the pressure of the tubular reactor 9 is controlled to be 0.25-0.55MPa in the slurry spraying process, the temperature of the reactor is 100-, controlling the temperature of the bed layer; the rotation part of the drum 5 is controlled to rotate counterclockwise by the starter motor 1 during granulation.
The technological indexes in the production process are shown in the following table:
| serial number | Index name | Unit of | Index value |
| 1 | Ratio of MAP solution to sulfuric acid | 4:1 | |
| 2 | Granulation exit pH | 5.5-7.5 | |
| 3 | Material temperature of granulator | ℃ | 55-80 |
| 4 | Concentration of MAP solution | ％ | 30-40 |
| 5 | Density of MAP solution | g/cm3 | 1.25-1.40 |
| 6 | System return ratio | ≤4:1 | |
| 7 | Pressure of tubular reactor | MPa | 0.25-0.55 |
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention, and all the technical solutions and the improvement concepts should be covered by the protection scope of the present invention.
Claims (7)
1. A novel semi-slurry production device of a rotary drum compound fertilizer comprises a cylinder body and a driving mechanism; the method is characterized in that: also comprises an ammonia spray shaft, a tubular reactor and a sulfuric acid spray pipe; the barrel is divided into two fixed ends at two ends and a middle rotating part, the rotating part is sealed by fish scales after being sleeved with the fixed ends at the two ends in a sliding way, the two fixed ends of the barrel are fixed on the ground through the fixed seats, and the rotating part of the barrel is connected with the driving mechanism and is provided with two slip ring structures with bottom parts provided with tugs;
the ammonia spraying shaft transversely penetrates through the cylinder body, and two ends of the ammonia spraying shaft are respectively provided with a bracket for supporting the ammonia spraying shaft; one end of the tubular reactor and one end of the sulfuric acid spray pipe extend into the cylinder body along the direction of the ammonia spray shaft, and the tubular reactor and the sulfuric acid spray pipe are fixedly connected with the ammonia spray shaft through a fixing frame.
2. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 1, which is characterized in that: the tubular reactor and the sulfuric acid spray pipe are positioned below the ammonia spray shaft, and the sulfuric acid spray pipe is positioned below the tubular reactor.
3. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 1, which is characterized in that: the driving mechanism comprises a motor, a hydraulic coupler, a speed reducer and a transmission gear; the motor is connected with the speed reducer through the hydraulic coupler, the speed reducer is connected with the transmission gear, and the transmission gear is arranged on the rotating part of the barrel.
4. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 1, which is characterized in that: the tubular reactor is composed of a mixing section, an adjusting section and a nozzle section, wherein the mixing section and the adjusting section are made of Teflon-lined steel tubes, the thickness of a Teflon lining of the Teflon-lined steel tubes is more than or equal to 10mm, the length of a pipe fitting of the Teflon-lined steel tubes is less than or equal to 700mm, and the nozzle section is made of 904L stainless steel tubes.
5. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 4, characterized in that: the nozzle section of the tubular reactor is provided with two groups of nozzles, and the spraying angle is 25-45 degrees.
6. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 5, characterized in that: the ammonia spraying shaft is provided with four vertically downward ammoniation branch pipes, the lower ends of the ammoniation branch pipes are sealed, and two sides of the lower ends of the ammoniation branch pipes are obliquely provided with nozzles; a spray head is arranged on the sulfuric acid spray pipe; the spray head and the two groups of nozzles are sequentially distributed at three vacant positions among the four ammoniation branch pipes; the lower end of the ammoniation branch pipe is lower than the spray head.
7. The novel semi-slurry production device of drum compound fertilizer as claimed in claim 1, which is characterized in that: a feed inlet is arranged on the fixed end at one end of the cylinder, an exhaust air pipe is arranged at the top of the fixed end at the other end, and a discharge outlet is arranged at the bottom of the fixed end; the feed inlet is connected with the discharge outlet of the bucket elevator; the discharge hole is connected with the feed inlet of the dryer; the waste gas air pipe is connected with an inlet pipe of the scrubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221121035.7U CN217127309U (en) | 2022-05-10 | 2022-05-10 | Novel semi-slurry production device for rotary drum compound fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221121035.7U CN217127309U (en) | 2022-05-10 | 2022-05-10 | Novel semi-slurry production device for rotary drum compound fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217127309U true CN217127309U (en) | 2022-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221121035.7U Active CN217127309U (en) | 2022-05-10 | 2022-05-10 | Novel semi-slurry production device for rotary drum compound fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217127309U (en) |
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2022
- 2022-05-10 CN CN202221121035.7U patent/CN217127309U/en active Active
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