CN202945065U - Drying device of diammonium phosphate rotary drum dryer - Google Patents
Drying device of diammonium phosphate rotary drum dryer Download PDFInfo
- Publication number
- CN202945065U CN202945065U CN 201220638876 CN201220638876U CN202945065U CN 202945065 U CN202945065 U CN 202945065U CN 201220638876 CN201220638876 CN 201220638876 CN 201220638876 U CN201220638876 U CN 201220638876U CN 202945065 U CN202945065 U CN 202945065U
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Abstract
The utility model discloses a drying device of a diammonium phosphate rotary drum dryer, which comprises a granulator, a product dryer and a hot-blast stove, wherein the granulator is connected with the product dryer; the hot-blast stove is connected with the product dryer; a tail gas outlet of the product dryer is also connected with a tail gas washer; a temperature measurer is arranged at the tail outlet of the product dryer; a tail gas outlet of the product dryer is connected with an air return machine; and the air return machine is connected with an inlet of the product dryer. When the temperature of the tail gas of the dryer is relatively high according to the measurement of a thermometer, the air return quantity of the tail gas is adjusted by adjusting the fan frequency; during adjustment, incoming gas temperature of the dryer is controlled at 350-500 DEG C, and the addition amount of fuel coal of the hot-blast stove is reduced; and when the exhaust gas temperature of the dryer is relatively low and the relative humidity is high, the tail gas temperature must be increased by increasing the amount of fuel coal so as to reduce the relative humidity of tail gas, prevent product condensation and meet the requirements on the product drying quality.
Description
Technical field
The utility model relates to a kind of diammonium phosphate rotating drum type drying machine drying installation.
Technical background
Diammonium phosphate contains the moisture of 4% left and right after the rotary drum granulator granulation, just can reach than low moisture≤2.5% quality product requirement through the dryer concurrent drying; Diammonium phosphate has thermolability, and during higher than 90 ℃, diammonium phosphate begins to decompose when temperature of charge; And in drying, adjust inlet temperature according to granulation material moisture requirement, the air intake drying temperature is controlled at 350-500 ℃, although the beginning inlet temperature is higher, have moisture to evaporate but the material self-temperature is lower and material particles is surperficial, the intensification of material is very slow, therefore decompose few; But in time do not adjust air output and inlet temperature due to after whitewashing amount fluctuation in production reality, the two mutual melting situations of ammonium particle are arranged, form oversize material, increase additional workload to subsequent disposal, also cause the product ammonia content to descend simultaneously because product temperature is high.Satisfy the inlet temperature requirement in guaranteeing to produce, adopt the mode of mending cold wind at the hotblast stove place to reduce inlet temperature, although obtain adding of product fluidized-bed cooling air quantity, mend deficiency in draught when output is large to reduce the dryer entrance temperature requirement; The tail gas of this situation discharging also has very strong drying power, if contain the tail discharging that drying power is arranged, obviously can increase the hotblast stove coal consumption, and a large amount of supplies of cold wind simultaneously can increase the output of exhaust fan electric energy equally, and operation is power consumption very, and is uneconomical.
Summary of the invention
For the deficiencies in the prior art part, the utility model aims to provide a kind of diammonium phosphate rotating drum type drying machine drying installation, guarantees to reduce energy consumption, improves the quality of product.
The technical solution adopted in the utility model: a kind of diammonium phosphate rotating drum type drying machine drying installation; comprise tablets press, products drying-machine, hotblast stove; tablets press connects with products drying-machine; hotblast stove connects with products drying-machine; the tail gas outlet of products drying-machine also connects with exhaust scrubber; tail gas outlet set temperature time meter at products drying-machine returns blower fan in the tail gas outlet connection of products drying-machine, returns the import that blower fan connects products drying-machine.
adopt said apparatus, the hot blast that material from tablets press and hotblast stove come enters dryer simultaneously, hot blast temperature is controlled at 350-500 ℃, moisture in material enters tail gas under the drying of hot blast in, along with the continuous dried tail gas temperature of material constantly descends, relative humidity can constantly raise, when thermometer measure goes out the dryer exhaust temperature when relatively high, just adjust tail gas by adjustment blower fan frequency and return air quantity, during adjusting, the dryer inlet air temperature is controlled at 350-500 ℃, reduce simultaneously the coal-fired add-on of hotblast stove, when the dryer exhaust temperature relatively low, when relative humidity is larger, must improve exhaust temperature by increasing Coal-fired capacity, thereby reduce the relative humidity of tail gas, prevent the product dewfall, reach the requirement of product drying quality.
Description of drawings
Fig. 1 is the prior art processes schema;
Fig. 2 is the utility model process flow sheet;
In accompanying drawing: 1 tablets press 2 dryer 3 hotblast stoves 4 return wind control valve 5 fluidized-bed cooling air 6 exhaust scrubber 7 temperature meters 8 and return blower fan 9 cold blast engines.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2; tablets press 1 and hotblast stove 3 connect with products drying-machine 2 respectively; the tail gas outlet of products drying-machine 2 connects with exhaust scrubber 6; tail gas outlet set temperature time meter 7 at products drying-machine 2; blower fan 8 is returned in tail gas outlet connection at products drying-machine 2; return the import that blower fan 8 connects products drying-machine 2, be provided with on the duct coupling that returns blower fan 8 and products drying-machine 2 and return wind control valve 5.
Can prevent by strict control inlet temperature the generation of pyrophosphate salt like this, reduce the generation of unacceptable product; By controlling the temperature of dryer 2 outlets, regulate and return the wind air quantity in addition, adjust simultaneously the coal amount of hotblast stove 3, thereby guarantee the requirement of diammonium phosphate product biodiversity; And adopt drying machine tail gas to mend wind, this part gas of benefit wind changes not too large from dryer 2 imports to temperature out, therefore there is no the additional energy loss, has played the effect of thermal barrier, although this mode drops into blower fan and corresponding pipe arrangement, postrun power consumption and thermal losses are less.
Claims (1)
1. diammonium phosphate rotating drum type drying machine drying installation; comprise tablets press (1), products drying-machine (2), hotblast stove (3); tablets press (1) connects with products drying-machine (2); hotblast stove (3) connects with products drying-machine (2); the tail gas outlet of products drying-machine (2) connects with exhaust scrubber (6); it is characterized in that: at the tail gas outlet set temperature time meter (7) of products drying-machine (3); also connect in the outlet of the tail gas of products drying-machine (2) and return blower fan (7), return the import that blower fan (7) connects products drying-machine (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638876 CN202945065U (en) | 2012-11-28 | 2012-11-28 | Drying device of diammonium phosphate rotary drum dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638876 CN202945065U (en) | 2012-11-28 | 2012-11-28 | Drying device of diammonium phosphate rotary drum dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202945065U true CN202945065U (en) | 2013-05-22 |
Family
ID=48420773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638876 Expired - Lifetime CN202945065U (en) | 2012-11-28 | 2012-11-28 | Drying device of diammonium phosphate rotary drum dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202945065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765734A (en) * | 2020-06-10 | 2020-10-13 | 苏州市宏宇环境科技股份有限公司 | Soil drying system based on solar energy comprehensive utilization |
-
2012
- 2012-11-28 CN CN 201220638876 patent/CN202945065U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765734A (en) * | 2020-06-10 | 2020-10-13 | 苏州市宏宇环境科技股份有限公司 | Soil drying system based on solar energy comprehensive utilization |
| CN111765734B (en) * | 2020-06-10 | 2021-08-03 | 苏州市宏宇环境科技股份有限公司 | Soil drying system based on solar energy comprehensive utilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WENGFU ZIJIN CHEMICAL INDUSTRY CO., LTD. Effective date: 20130902 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130902 Address after: 23, 550002 floor, International Building, No. 57, South City Road, Guiyang, Guizhou Patentee after: WENGFU GROUP Co.,Ltd. Patentee after: WENGFU ZIJIN CHEMICAL INDUSTRY Co.,Ltd. Address before: 23, 550002 floor, International Building, No. 57, South City Road, Guiyang, Guizhou Patentee before: WENGFU GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |
|
| CX01 | Expiry of patent term |