Diammonium phosphate microwave moisture online detection system

Abstract

The utility model provides an online microwave moisture detection system for diammonium phosphate, and relates to the technical field of moisture detection. The utility model relates to an online microwave moisture detection system for diammonium phosphate. The online microwave moisture detection system comprises a reactor, a granulator connected with the reactor, a dryer connected with the granulator, a cooler connected with the dryer and a storage tank connected with the cooler, a microwave moisture detection mechanism is arranged on a conveying pipeline between the cooler and the storage tank, the microwave moisture detection mechanism comprises a microwave moisture probe and a data processing unit, and the microwave moisture probe is in signal connection with the data processing unit. The moisture content in the diammonium phosphate product can be rapidly measured, and real-time monitoring and accurate control are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water content detection technical field, specifically, relate to a kind of diammonium phosphate microwave moisture on-line detection system. BACKGROUND

[0002] As an important chemical fertilizer raw material, the moisture content of diammonium phosphate has important influence on product quality and production process control, and too high or too low moisture content will affect production efficiency and product quality. Too high moisture content will cause diammonium phosphate to be hygroscopic and deteriorate, and the caking phenomenon will occur during transportation and storage, which will reduce the solubility and utilization rate of fertilizer and affect the fertilizer efficiency. Too low moisture content may cause diammonium phosphate to generate static electricity, and even cause fire and explosion accidents.

[0003] Although the traditional moisture detection method such as oven method is accurate, it takes a long time to detect, which cannot meet the real-time monitoring demand in production process. Therefore, it is of great significance to develop an online detection system that can quickly and accurately determine the moisture content in diammonium phosphate. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of diammonium phosphate microwave moisture on-line detection system, which can quickly determine the moisture content in diammonium phosphate product, realize real-time monitoring and accurate control.

[0005] The utility model realizes the following technical scheme:

[0006] A kind of diammonium phosphate microwave moisture on-line detection system, including reactor, the granulator connected with the reactor, the dryer connected with the granulator, the cooler connected with the dryer, and the storage tank connected with the cooler;Microwave moisture detection mechanism is arranged on the conveying pipeline of the cooler and the storage tank, the microwave moisture detection mechanism includes microwave moisture probe and data processing unit, and the microwave moisture probe is signal connected with the data processing unit.

[0007] Further, the granulator is also connected with ammonia distributor.

[0008] Further, the diammonium phosphate microwave moisture on-line detection system further includes process sieve, the inlet, the first discharge port, the second discharge port and the third discharge port are arranged on the process sieve, the inlet is communicated with the dryer, the first discharge port is communicated with the cooler, the second discharge port is connected with the pulverizer, the third discharge port is connected with conveyor, the discharge port of the pulverizer is communicated with the conveyor, and the discharge port of the conveyor is communicated with the granulator.

[0009] Further, the microwave moisture detection mechanism further comprises a controller and an electric box, the controller is in signal connection with the data processing unit, and the electric box is in electric connection with the microwave moisture probe, the data processing unit and the controller respectively.

[0010] Further, a hot blast furnace is connected to the drying machine, a blower is connected to the hot blast furnace, a hot blast flow regulator is arranged on a connecting pipeline between the hot blast furnace and the drying machine, and the hot blast flow regulator is connected to the controller.

[0011] Further, a thermometer is arranged on the drying machine and connected to the controller.

[0012] Further, a tail gas treatment mechanism is further connected to the drying machine, and the tail gas treatment mechanism comprises a dust remover connected to the drying machine and a scrubber connected to the dust remover.

[0013] The technical scheme of the utility model has at least the following advantages and beneficial effects:

[0014] The microwave moisture detection mechanism is installed on the material conveying pipeline, the moisture of the diammonium phosphate is detected on line, the microwave signal is emitted by the microwave moisture probe and the reflected signal is received, the moisture content in the diammonium phosphate product is calculated by utilizing the relationship between the propagation speed of the microwave in the substance and the moisture content of the substance, meanwhile, the data processing unit compares the real-time collected moisture data with the preset standard value, the corresponding control signal is output according to the comparison result, the production process is adjusted, the moisture content in the diammonium phosphate is controlled, and the quality of the produced diammonium phosphate is better. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for the ordinary skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0016] Fig. 1 The structure schematic view of the diammonium phosphate microwave moisture on-line detection system provided for the utility model embodiment 1 is shown in the figure.

[0017] Fig. 2 The structure schematic view of the microwave moisture detection mechanism provided for the utility model embodiment 1 is shown in the figure.

[0018] Icon: 1-reactor, 2-pelletizer, 3-dryer, 4-process sieve, 5-cooler, 6-tank, 7-microwave moisture detection mechanism, 8-ammonia distributor, 9-crusher, 10-conveyor, 11-hot blast furnace, 12-blower, 13-hot air flow regulator, 14-dust remover, 15-washer, 16-thermometer, 71-data processing unit, 72-microwave moisture probe, 721-transmitting end, 722-receiving end. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0021] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product of the application when it is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0023] In the description of the utility model, still need to explain, unless another explicit provision and limitation, if appear the term "arrangement", "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the intermediate medium indirectly connected, can be two elements inside the intercommunication.For the ordinary skill in the art, the above-mentioned terms can be understood in the specific meaning in the utility model according to specific circumstances.

[0024] Embodiment 1

[0025] As Figs. 1-2 shown, the embodiment provides a kind of di-ammonium phosphate microwave water on-line detection system, including reactor 1, with the granulator 2 of reactor 1 connection, with the drying machine 3 of granulator 2 connection, with the cooler 5 of drying machine 3 connection, and with the storage tank 6 of cooler 5 connection;Microwave moisture detection mechanism 7 is arranged on the conveying pipeline of cooler 5 and storage tank 6, and microwave moisture detection mechanism 7 includes microwave moisture probe 72 and data processing unit 71, and microwave moisture probe 72 is signal connected with data processing unit 71.

[0026] Microwave moisture detection mechanism 7 is installed on material conveying pipeline, realizes the on-line detection of di-ammonium phosphate moisture, emits microwave signal by microwave moisture probe 72 and receives reflection signal, utilizes the relationship between the propagation speed of microwave in substance and the moisture content of substance, and the moisture content in di-ammonium phosphate product can be calculated.Meanwhile, data processing unit 71 compares the moisture data collected in real time with the preset standard value, outputs corresponding control signal according to comparison result, guides the adjustment of production process, realizes the control of moisture content in di-ammonium phosphate, and makes the quality of produced di-ammonium phosphate better.

[0027] Among them, microwave moisture probe 72 adopts a pair of rod antennas, including transmitting end 721 and receiving end 722.Transmitting end 721 generates electromagnetic wave, and is shot into the measured medium by antenna, and the microwave is received by receiving end 722 antenna after penetrating the measured medium.Microwave antenna sends the microwave signal obtained by transmitting end 721 and receiving end 722 to data processing unit 71 through special signal cable.Microwave moisture probe 72 and data processing unit 71 are connected together, and this integrated mode can greatly save installation cost and simplify installation process.

[0028] Because the moisture content of material after drying changes in cooling process, by detecting the moisture content of di-ammonium phosphate after cooling, the accuracy of detection result can be improved, and the change of di-ammonium phosphate moisture content in cooling process is avoided to affect detection result.

[0029] In the embodiment of the present application, the granulator 2 is further connected with an ammonia distributor 8. Liquid ammonia is introduced into the granulator 2 through the ammonia distributor 8, and the diammonium phosphate slurry generated by the neutralization reaction in the reactor 1 is subjected to secondary ammoniation in the granulator 2, so as to ensure that the material reaches the required N / P.

[0030] In the embodiment of the present application, the microwave moisture on-line detection system for diammonium phosphate further comprises a process sieve 4, the process sieve 4 is provided with an inlet, a first outlet, a second outlet and a third outlet, the inlet is communicated with the dryer 3, the first outlet is communicated with the cooler 5, the second outlet is connected with a crusher 9, and the third outlet is connected with a conveyor 10, the outlet of the crusher 9 is communicated with the conveyor 10, and the outlet of the conveyor 10 is communicated with the granulator 2. The dried material can be screened through the process sieve 4, the material with qualified particle size is discharged from the first outlet to the cooler 5, the material with coarse particle size is discharged from the second outlet to the crusher 9 and then conveyed to the conveyor 10 after being crushed, and the material with fine particle size is discharged from the third outlet to the conveyor 10, and the material in the conveyor 10 reenters the granulator 2 for treatment. In this way, the particle size of the obtained granular diammonium phosphate can be kept consistent, and the product quality can be improved.

[0031] In the embodiment of the present application, the microwave moisture detection mechanism 7 further comprises a controller and an electric box, the controller is signal connected with the data processing unit 71, and the electric box is electrically connected with the microwave moisture probe 72, the data processing unit 71 and the controller. The electric box is rotatably adjustable, is provided with a power filter and a filter anti-interference switching power supply, and can ensure stable operation of the system and accurate collection of data. The controller can be used for parameter setting, data viewing and operation control.

[0032] In the embodiment of the present application, the dryer 3 is connected with a hot air stove 11, the hot air stove 11 is connected with a blower 12, a hot air flow regulator 13 is arranged on the connecting pipeline between the hot air stove 11 and the dryer 3, and the hot air flow regulator 13 is connected with the controller. The blower 12 and the hot air stove 11 cooperate to provide a heat source for the dryer 3, the hot air flow can be adjusted through the hot air flow regulator 13, so as to control the drying temperature in the dryer 3, and prevent over-drying or under-drying.

[0033] In the embodiment of the present application, the dryer 3 is provided with a thermometer 16, and the thermometer 16 is connected with the controller. The thermometer 16 can monitor the temperature in the dryer 3 in real time, and facilitate observation and adjustment of the temperature.

[0034] In the embodiment of the present application, the drying machine 3 is further connected with a tail gas treatment mechanism, which comprises a dust collector 14 connected with the drying machine 3 and a scrubber 15 connected with the dust collector 14.

[0035] The working principle of the online microwave moisture detection system for diammonium phosphate is as follows:

[0036] Phosphoric acid and liquid ammonia are subjected to neutralization reaction in the reactor 1 to generate diammonium phosphate slurry, which is fed into the granulator 2, liquid ammonia is introduced into the granulator 2 through the ammonia distributor 8, and the liquid ammonia and the diammonium phosphate slurry are subjected to secondary ammoniation reaction, so that the material at the outlet of the granulator 2 reaches the required N / P. Then the material is transported to the drying machine 3, air is introduced into the hot blast furnace 11 through the air blower 12, and the hot air heated by the hot blast furnace 11 is transported to the inside of the drying machine 3 to dry the material. The dried material is transported to the process screen 4 for screening, the material with qualified particle size is transported from the first discharge port to the cooler 5, the material with coarse particle size is transported from the second discharge port to the pulverizer 9, and then transported to the conveyor 10, the material with fine particle size is transported from the third discharge port to the conveyor 10, and the material in the conveyor 10 is transported to the granulator 2 for re-granulation. The material cooled by the cooler 5 is transported to the storage tank 6, the microwave moisture probe 72 starts to emit microwave signals and receive reflected signals on the conveying pipeline, the data processing unit 71 processes data and outputs the moisture content value, and the controller controls the hot air flow regulator 13 after receiving the signal of the data processing unit 71, adjusts the hot air size of the hot air flow regulator 13 to adjust the drying process, and realizes the control of the moisture content of diammonium phosphate.

[0037] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A microwave online moisture detection system for diammonium phosphate, characterized in that: The device includes a reactor, a granulator connected to the reactor, a dryer connected to the granulator, a cooler connected to the dryer, and a storage tank connected to the cooler; a microwave moisture detection mechanism is installed on the conveying pipeline between the cooler and the storage tank, the microwave moisture detection mechanism includes a microwave moisture probe and a data processing unit, and the microwave moisture probe is signal-connected to the data processing unit.

2. The microwave online moisture detection system for diammonium phosphate according to claim 1, characterized in that, The granulator is also connected to an ammonia distributor.

3. The microwave online moisture detection system for diammonium phosphate according to claim 1, characterized in that, The microwave online moisture detection system for diammonium phosphate also includes a process sieve, which is provided with an inlet, a first outlet, a second outlet, and a third outlet. The inlet is connected to the dryer, the first outlet is connected to the cooler, the second outlet is connected to a pulverizer, and the third outlet is connected to a conveyor. The outlet of the pulverizer is connected to the conveyor, and the outlet of the conveyor is connected to the granulator.

4. The microwave online moisture detection system for diammonium phosphate according to claim 1, characterized in that, The microwave moisture detection mechanism also includes a controller and an electrical box. The controller is signal-connected to the data processing unit, and the electrical box is electrically connected to the microwave moisture probe, the data processing unit, and the controller, respectively.

5. The microwave online moisture detection system for diammonium phosphate according to claim 4, characterized in that, The dryer is connected to a hot air furnace, the hot air furnace is connected to a blower, and a hot air flow regulator is installed on the connecting pipe between the hot air furnace and the dryer. The hot air flow regulator is connected to the controller.

6. The microwave online moisture detection system for diammonium phosphate according to claim 5, characterized in that, The dryer is equipped with a thermometer, which is connected to the controller.

7. The microwave online moisture detection system for diammonium phosphate according to claim 1, characterized in that, The dryer is also connected to an exhaust gas treatment mechanism, which includes a dust collector connected to the dryer and a scrubber connected to the dust collector.

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