Granulation device for producing high-tower nitro-sulfenyl compound fertilizer

Abstract

The utility model discloses a granulation device for producing a high-tower nitro-sulfenyl compound fertilizer, and relates to the technical field of fertilizer production. The air outlet device comprises an outer fixing cylinder, a top cover, a bottom fixing disc and a fixing shell, the top cover is fixed to the top end of the outer fixing cylinder, the bottom fixing disc is fixed to the bottom end of the outer fixing cylinder, an air outlet shell is fixed in the bottom fixing disc in a penetrating mode, and the air outlet shell is vertically arranged in a penetrating mode and is hollow; an annular air outlet is formed in the top end of the air outlet shell, a conveying sleeve is fixed to the bottom end of the air outlet shell, and the bottom end of the conveying sleeve fixedly communicates with a fixing shell. Through the arrangement of the outer fixing cylinder, the top cover, the bottom fixing disc and the fixing shell, the problems that molten fertilizer is easily cooled and bonded on the inner wall of a high tower when the granulation device works, and secondary cooling tail gas needs additional treatment equipment after fertilizer granules are produced, so that the cost is relatively high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fertilizer production, in particular to a granulating device for producing high-tower nitrate-sulfur-based composite fertilizers. Background Art

[0002] Nitrosulfur compound fertilizer is a new type of compound fertilizer, composed of nitrate, phosphorus and potassium sulfate. This fertilizer is high-quality, efficient, green, environmentally friendly and pollution-free. It is suitable for dryland crops, especially for crops that prefer sulfur and avoid chlorine or sulfur-deficient, saline-alkali soils. Nitrate-sulfur compound fertilizers can be used as base fertilizer or topdressing, which helps to meet the nutrient needs of crops at different growth stages and improve the disease resistance and lodging resistance of crops. In addition, nitrate-sulfur compound fertilizers can also promote the fullness, weight and number of grains of crops, and improve the size and uniformity of fruits and vegetables, thereby significantly improving the yield and quality of crops and increasing economic benefits. The tower nitro compound fertilizer production technology uses the principle of molten ammonium nitrate and ammonium phosphate or potassium sulfate or dolomite to form a low eutectic point compound. Various raw materials are added to the molten ammonium nitrate to form a molten material with suspended matter and fluidity, and then granulated in the granulation tower through a special granulation nozzle. During the descent in the tower, it cools and agglomerates into granules. Compared with the granulation method and the extrusion method, its product composition is stable and the nutrients are uniform. However, the compound fertilizer production granulation device still has the following disadvantages in actual use:

[0003] 1. When the granulation device is working, air is usually blown into the granulation tower to cool the molten fertilizer sprayed from the upper part of the tower, so that the fertilizer is cooled and granulated into particles for fertilizer granulation. However, during the fertilizer granulation process, the molten fertilizer is easy to cool and granulate on the inner wall of the tower, which needs to be cleaned regularly;

[0004] 2. When the granulation device is working, a large amount of heat will remain on the fertilizer particles after granulation, and they need to be further cooled by secondary cooling equipment before they can be packaged. When the fertilizer particles are cooled for the second time, the exhaust gas emitted from the particles needs to be treated. Additional exhaust gas treatment is required during the treatment process, and the equipment cost is relatively high. Utility Model Content

[0005] The utility model aims to provide a granulating device for producing nitric-sulfur-based compound fertilizers in a high tower. By arranging an external fixed cylinder, a top cover, a bottom fixed plate and a fixed shell, the utility model solves the problems that the molten fertilizer is easily cooled and condensed on the inner wall of the high tower when the granulating device is working, and the tail gas of the secondary cooling after the production of fertilizer particles requires additional processing equipment, which is costly.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a granulating device for producing high-tower nitric-sulfur-based compound fertilizer, comprising an external fixed cylinder, a top cover, a bottom fixed plate and a fixed shell, wherein the top end of the external fixed cylinder is fixed with the top cover, the bottom end of the external fixed cylinder is fixed with the bottom fixed plate, an air outlet shell is fixed through the bottom fixed plate, the air outlet shell is through-set from top to bottom and is hollow inside, the top end of the air outlet shell is annular, and an air outlet port in the form of an annular shape is provided at the top end of the air outlet shell, a conveying sleeve is fixed at the bottom end of the air outlet shell, and the bottom end of the conveying sleeve is fixedly connected with the fixed shell, when working, the inner sleeve is fixed therein through the external fixed cylinder, the top end of the external fixed cylinder is closed through the top cover, the air outlet shell is fixed therein through the bottom fixed plate, cooled air is conveyed into the inner sleeve through the air outlet shell, molten fertilizer droplets in the inner sleeve are cooled, and fertilizer particles are concentrated through the fixed shell.

[0008] Furthermore, fixing plates are vertically fixed on the inner wall of the outer fixed cylinder in a circular array, and an inner sleeve is commonly fixed on one side of all the fixing plates close to the central axis of the outer fixed cylinder. The gas outlet shell is sleeved on the inner lower part of the inner sleeve, and the outer fixed cylinder fixes the inner sleeve therein through the fixing plates, and the molten fertilizer is transported into it through the inner sleeve.

[0009] Furthermore, an input pipe is fixed through the top cover along the central axis, a nozzle is fixed at the bottom end of the input pipe, an air outlet is fixed through the top cover on one side of the input pipe, the bottom end of the air outlet and the nozzle are both arranged in the inner sleeve, and the top cover transports the molten fertilizer to the nozzle through the input pipe, and then transports it to the air outlet through the nozzle.

[0010] Furthermore, the lower part of the peripheral side of the air outlet shell is fixedly connected with a delivery pipe in an annular array, and the delivery pipes are all arranged below the bottom fixed plate. The air outlet shell delivers the high-pressure air delivered in the annular pipe to it through the delivery pipes.

[0011] Furthermore, all the delivery pipes are commonly fixedly connected to an annular pipe at one end away from the air outlet shell, a connecting pipe is fixedly connected to the outside of the annular pipe, and a connecting piece is fixedly connected to one end of the connecting pipe away from the annular pipe. The delivery rod is connected to an external pipeline for delivering high-pressure air through the connecting piece, and the high-pressure air is delivered to the connecting pipe, then to the annular pipe through the connecting pipe, then to the delivery pipe through the annular pipe, and finally to the air outlet shell through the delivery pipe.

[0012] Furthermore, the bottom end of the fixed shell is fixedly connected to an output square tube, one end of the output square tube is fixedly connected to an air intake pipe, the fixed shell outputs the fertilizer particles concentrated therein to the equipment for the next processing through the output square tube, and high-pressure air is transported therein through the air intake pipe. When the high-pressure air is transported to the output square tube, the heat on the fertilizer particles is quickly blown off, thereby reducing the time required for secondary cooling of the fertilizer particles.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model solves the problem that the molten fertilizer is easily cooled and condensed on the inner wall of the high tower when the granulation device is working by arranging an external fixed cylinder, a top cover and a bottom fixed plate. During the granulation process, the air in the high-pressure air device is transported to the connecting pipe through the connecting pipe, transported to the annular pipe through the connecting pipe, transported to the conveying pipe through the annular pipe, and then transported to the air outlet shell through the conveying pipe, discharged through the air outlet at the top of the air outlet shell, sprayed into the inner sleeve, and the fertilizer droplets in the inner sleeve are cooled. During the cooling process, the air adheres to the inner wall of the inner sleeve to prevent the molten fertilizer droplets from adhering to the inner wall of the inner sleeve, thereby reducing the cleaning cost of the high tower.

[0015] 2. The utility model solves the problem that the secondary cooling of tail gas after the production of fertilizer particles requires additional processing equipment and is costly by arranging a bottom fixed plate and a fixed shell. When the fertilizer particles in the gas outlet shell fall into the output sleeve, the fertilizer particles falling therein are concentrated into the output square tube through the fixed shell, and output to the equipment for the next step of processing through the output square tube. When the fertilizer passes through the output square tube, high-pressure air is blown into the output square tube through the air inlet pipe to fully cool the compound fertilizer passing through the output square tube. Therefore, when the fertilizer particles are produced, the secondary cooling and the primary cooling share the same tail gas treatment equipment, the equipment cost is lower, and the recovery of the fertilizer components that can be recovered in the fertilizer steam is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A three-dimensional diagram of the assembly structure of a granulation device for producing high-tower nitric-sulfur-based compound fertilizers;

[0018] Figure 2 It is a three-dimensional diagram of the external fixing tube structure;

[0019] Figure 3 It is a three-dimensional diagram of the top cover structure;

[0020] Figure 4 It is a three-dimensional diagram of the bottom fixed plate structure;

[0021] Figure 5 It is a three-dimensional diagram of the fixed shell structure.

[0022] Reference numerals:

[0023] 1. External fixed cylinder; 101. Fixed plate; 102. Inner sleeve; 2. Top cover; 201. Air outlet cylinder; 202. Input pipe; 203. Nozzle; 3. Bottom fixed plate; 301. Air outlet shell; 302. Air outlet; 303. Delivery pipe; 304. Annular pipe; 305. Connecting pipe; 306. Connecting piece; 4. Fixed shell; 401. Delivery sleeve; 402. Output square pipe; 403. Air inlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0026] See also Figure 1-5 The utility model is a granulating device for producing high-tower nitric-sulfur-based compound fertilizers, comprising an outer fixed cylinder 1, a top cover 2, a bottom fixed disk 3 and a fixed shell 4. The top of the outer fixed cylinder 1 is fixed with a top cover 2, the top of the outer fixed cylinder 1 is closed by the top cover 2, the outer fixed cylinder 1 fixes an inner sleeve 102 therein, the bottom of the outer fixed cylinder 1 is fixed with a bottom fixed disk 3, the outer fixed cylinder 1 is fixed to its bottom by the bottom fixed disk 3, an air outlet shell 301 is fixed through the bottom fixed disk 3, the air outlet shell 301 is through-set from top to bottom, and the inside is hollow, the air outlet shell 301 is fixed to the bottom of the outer fixed cylinder 1, and the air outlet shell 301 is through-set from top to bottom, and the inside is hollow, and the air outlet shell 301 is fixed to the bottom of the outer fixed cylinder 1. 1 has an annular top, and an annular air outlet 302 is provided at the top of the air outlet shell 301. The high-pressure air entering the air outlet shell 301 rises in the air outlet shell 301 to the air outlet 302, and is sprayed into the inner sleeve 102 through the air outlet 302, and rises in the inner sleeve 102. A conveying sleeve 401 is fixed at the bottom end of the air outlet shell 301, and the compound fertilizer particles output from the air outlet shell 301 are conveyed to the fixed shell 4 through the conveying sleeve 401. The bottom end of the conveying sleeve 401 is fixedly connected to the fixed shell 4, and the fertilizer particles are further cooled by the fixed shell 4.

[0027] Specifically, fixing plates 101 are vertically fixed in a circular array on the inner wall of the outer fixing tube 1, and an inner sleeve 102 is commonly fixed on one side of all the fixing plates 101 close to the central axis of the outer fixing tube 1. The air outlet shell 301 is sleeved on the inner lower part of the inner sleeve 102. The outer fixing tube 1 fixes the inner sleeve 102 therein through the fixing plates 101, and the inner sleeve 102 provides the function of airflow cooling the radiator.

[0028] Furthermore, an input pipe 202 is fixed along the central axis in the top cover 2, the top of the input roller is connected to the external molten fertilizer conveying equipment, a nozzle 203 is fixed at the bottom end of the input pipe 202, an air outlet tube 201 is fixed through the top cover 2 on one side of the input pipe 202, the bottom end of the air outlet tube 201 and the nozzle 203 are both arranged in the inner sleeve 102, the input pipe 202 conveys the molten fertilizer to the nozzle 203, and sprays it into the inner sleeve 102 through the nozzle 203, and the air in the inner sleeve 102 for cooling the fertilizer is conveyed to the purification device through the air outlet tube 201.

[0029] Furthermore, the lower part of the peripheral side of the air outlet shell 301 is fixedly connected with a delivery pipe 303 in an annular array. The delivery pipes 303 are all arranged below the bottom fixed plate 3. The air outlet shell 301 delivers the air delivered in the annular pipe 304 to it through the delivery pipes 303.

[0030] Furthermore, all the delivery pipes 303 are commonly fixedly connected to an annular pipe 304 at one end away from the air outlet shell 301, a connecting pipe 305 is fixedly connected to the outside of the annular pipe 304, and a connecting piece 306 is fixedly connected to the connecting pipe 305 at one end away from the annular pipe 304. The connecting pipe 305 is connected to a joint for delivering high-pressure air through the connecting piece 306, so that the high-pressure air is delivered to the annular pipe 304 through the connecting pipe 305, delivered to the delivery pipe 303 through the annular pipe 304, and delivered to the air outlet shell 301 through the delivery pipe 303.

[0031] The operation process of this embodiment is as follows: during operation, the fertilizer is transported to the input pipe 202 through the pipeline for transporting molten fertilizer externally, transported to the nozzle 203 through the input pipe 202, sprayed into the outer fixed cylinder 1 through the nozzle 203, transported to the air outlet shell 301 after cooling in the outer fixed cylinder 1, and transported to the delivery sleeve 401 through the air outlet shell 301 for granulation. During the granulation process, the air in the high-pressure air device is transported to the connecting pipe 305 through the connecting pipe 305, transported to the annular pipe 304 through the connecting pipe 305, transported to the delivery pipe 303 through the annular pipe 304, and then transported to the air outlet shell 301 through the delivery pipe 303, discharged through the air outlet 302 at the top of the air outlet shell 301, and sprayed into the inner sleeve 102, so as to cool the fertilizer droplets in the inner sleeve 102. During the cooling process, the air adheres to the inner wall of the inner sleeve 102 to prevent the molten fertilizer droplets from adhering to the inner wall of the inner sleeve 102. Specific embodiment 2

[0033] See also Figure 1 , 45. On the basis of the specific embodiment 1, the bottom end of the fixed shell 4 is fixedly connected with an output square tube 402, one end of the output square tube 402 is fixedly connected with an air inlet pipe 403, and one end of the air inlet pipe 403 away from the output square tube 402 is connected with an external pipeline for conveying high-pressure air. The fixed shell 4 collects the fertilizer particles that fall into it into the output square tube 402 through the conveying sleeve 401, and outputs them to the equipment for the next processing through the output square tube 402. When the fertilizer passes through the output square tube 402, the high-pressure air is blown into the output square tube 402 through the air inlet pipe 403 to fully cool the compound fertilizer passing through the output square tube 402.

[0034] The operation process of this embodiment is as follows: during operation, when the fertilizer particles in the air outlet shell 301 fall into the output sleeve, the fertilizer particles falling therein are concentrated into the output square tube 402 through the fixed shell 4, and output to the equipment for the next processing through the output square tube 402. When the fertilizer passes through the output square tube 402, high-pressure air is blown into the output square tube 402 through the air inlet pipe 403 to fully cool the compound fertilizer passing through the output square tube 402.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A granulation device for producing high-tower nitric-sulfur-based compound fertilizers, comprising an outer fixed cylinder (1), a top cover (2), a bottom fixed plate (3) and a fixed shell (4), characterized in that: A top cover (2) is fixed to the top end of the external fixed cylinder (1), a bottom fixed plate (3) is fixed to the bottom end of the external fixed cylinder (1), an air outlet shell (301) is fixed through the bottom fixed plate (3), the air outlet shell (301) is through-connected from top to bottom and hollow inside, the top end of the air outlet shell (301) is annular, and an annular air outlet (302) is provided at the top end of the air outlet shell (301), a conveying sleeve (401) is fixed to the bottom end of the air outlet shell (301), and the bottom end of the conveying sleeve (401) is fixedly connected to a fixed shell (4).

2. The granulating device for producing high-tower nitric-sulfur-based compound fertilizer according to claim 1, characterized in that: Fixed plates (101) are vertically fixed in a circular array on the inner wall of the outer fixed cylinder (1), an inner sleeve (102) is commonly fixed on one side of all the fixed plates (101) close to the central axis of the outer fixed cylinder (1), and the gas outlet shell (301) is sleeved on the inner lower part of the inner sleeve (102).

3. The granulating device for producing high-tower nitric-sulfur-based compound fertilizer according to claim 2, characterized in that: An input pipe (202) is fixedly passed through the top cover (2) along the central axis, a nozzle (203) is fixedly passed through the bottom end of the input pipe (202), an air outlet tube (201) is fixedly passed through the top cover (2) on one side of the input pipe (202), and the bottom end of the air outlet tube (201) and the nozzle (203) are both arranged in the inner sleeve (102).

4. The granulating device for producing high-tower nitric-sulfur-based compound fertilizer according to claim 1, characterized in that: The lower part of the peripheral side of the gas outlet shell (301) is fixedly connected to a delivery pipe (303) in a circular array, and the delivery pipes (303) are all arranged below the bottom fixed plate (3).

5. The granulating device for producing high-tower nitric-sulfur-based compound fertilizer according to claim 4, characterized in that: All the delivery pipes (303) are commonly fixedly connected to an annular pipe (304) at one end away from the gas outlet shell (301), a connecting pipe (305) is fixedly connected to the outside of the annular pipe (304), and a connecting piece (306) is fixedly connected to one end of the connecting pipe (305) away from the annular pipe (304).

6. The granulating device for producing high-tower nitric-sulfur-based compound fertilizer according to claim 1, characterized in that: The bottom end of the fixed shell (4) is fixedly connected to an output square tube (402), and one end of the output square tube (402) is fixedly connected to an air intake pipe (403).

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