CN217092089U - Device for improving quality of monoammonium phosphate product - Google Patents
Device for improving quality of monoammonium phosphate product Download PDFInfo
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- CN217092089U CN217092089U CN202220499998.4U CN202220499998U CN217092089U CN 217092089 U CN217092089 U CN 217092089U CN 202220499998 U CN202220499998 U CN 202220499998U CN 217092089 U CN217092089 U CN 217092089U
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Abstract
The utility model discloses a device for improving monoammonium phosphate product quality, which comprises a high-pressure pump, wherein the high-pressure pump is connected with the top of a powder spraying tower, an air chamber of the powder spraying tower is connected with a steam hot blast stove through an air heater, a gas phase outlet of the powder spraying tower is connected with a tail gas washing tower, a discharge port of the powder spraying tower is connected with a drying tower, the drying tower is arranged at the lower side of the powder spraying tower, the air chamber of the drying tower is connected with a dehumidifying unit through a cooling fan, the gas phase outlet of the drying tower is connected with the powder spraying tower, and the discharge port of the drying tower is connected with a belt; the utility model discloses can realize the automatic control of the dry hot air temperature of spray tower, avoid the influence of temperature fluctuation to finished product moisture, through after the drying of cooling and drying tower secondary and cooling, finished product moisture further reduces, but finished product fertilizer temperature stable control is within 40 ℃, greatly reduced the risk of finished product caking.
Description
Technical Field
The utility model relates to a chemical industry field specifically indicates a device for improving monoammonium phosphate product quality.
Background
The monoammonium phosphate drying method generally adopts a coal-fired hot air furnace as a heat source, heats air in a tube nest by using heat generated by combustion of a coal bed in a hearth, and sends the heated air into a powder spraying tower through an air heater to dry atomized monoammonium phosphate liquid. The coal-fired hot blast stove is influenced by coal quality, operating working substance quality and the like, and fluctuation is easy to generate in temperature control, so that a certain influence can be caused on the drying process of finished products, and the produced coke fertilizer and the moisture of the finished products do not reach the standard. The situation of perforation of the heating tube array is easy to occur after the coal-fired hot blast stove has long service life, so that coal ash is brought into the product to influence the product quality.
A powder spraying tower is mostly adopted for single-stage drying in the process of producing the powdery monoammonium phosphate, and the quality of the working condition of the powder spraying tower directly influences the moisture content of the product. The temperature of hot drying air of a powder spraying tower is generally about 140 ℃, the temperature of dried ammonium phosphate particles is generally higher when the ammonium phosphate particles are taken out of the tower and is between 55 and 65 ℃, so that the temperature of a fertilizer is still higher when the ammonium phosphate finished product is packaged, and the caking phenomenon is easy to occur after the finished product is stacked for a period of time.
Therefore, it is necessary to design a device for improving the quality of the monoammonium phosphate product to solve the above problems.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a device for improving monoammonium phosphate product quality, solved the unstable, high problem of dusting tower ejection of compact temperature of coal-fired hot-blast furnace temperature control, reduced product moisture and packaging temperature, avoided the product caking, improved product quality.
The utility model discloses a solve above-mentioned technical problem, the technical scheme who adopts is: the utility model provides an improve monoammonium phosphate product quality's device, includes the high-pressure pump, the high-pressure pump is connected with the tower top of dusting tower, and the dusting tower air chamber passes through the air heater to be connected with steam hot-blast stove, and the dusting tower gaseous phase export is connected with tail gas washing tower, and the dusting tower discharge gate is connected with the drying tower, the dusting tower downside is located to the drying tower, and the drying tower air chamber passes through cooling blower and is connected with dehumidification unit, and the drying tower gaseous phase export is connected with the dusting tower, and the drying tower discharge gate is connected with the belt.
Preferably, the powder spraying tower and the drying tower are both composed of a tower body and a gas chamber, the tower body and the gas chamber are separated by a partition plate, a fixed air cap is arranged on the partition plate, and a gas guide plate and a gas distribution plate are arranged in the gas chamber.
Preferably, the powder spraying tower and the drying tower are provided with regulating valves, and the regulating valves are pneumatic regulating valves.
Preferably, pressure gauges are arranged on the powder spraying tower and the drying tower.
Preferably, the dehumidification unit adopts an energy-saving type refrigeration dehumidification unit.
Preferably, a nozzle is arranged at the top of the powder spraying tower.
Preferably, a temperature sensor is arranged on the tower body of the powder spraying tower, a control valve of the steam hot blast stove is an electric valve, and the temperature sensor is electrically connected with the electric valve through a controller.
Preferably, a plurality of groups of heating pipes are arranged in the steam hot blast stove.
The utility model has the advantages that:
1. by adopting the steam hot blast stove as a drying heat source, the temperature can be automatically controlled, the index stability is high, and the influence of temperature fluctuation on the moisture of the product is avoided.
2. A cooling and drying tower is added behind the powder spraying tower, so that the moisture of the product is further reduced, the fertilizer temperature is reduced, and the product caking is prevented.
3. The air inlet of the drying tower adopts the dehumidified cold air, so that the influence on the moisture of the finished product when the relative humidity of the air is high is avoided.
Drawings
FIG. 1 is a schematic diagram of an apparatus for improving the quality of a monoammonium phosphate product;
in the figure, a high-pressure pump 1, a powder spraying tower 2, a hot air blower 3, a steam hot air furnace 4, a tail gas washing tower 5, a drying tower 6, a cooling fan 7, a dehumidifying unit 8, a belt 9 and a regulating valve 10.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, a device for improving monoammonium phosphate product quality, including high-pressure pump 1, high-pressure pump 1 is connected with 2 tops of spray towers, and 2 air chambers of spray towers pass through air heater 3 and are connected with steam hot blast stove 4, and 2 gaseous phase exports of spray towers are connected with tail gas washing tower 5, and 2 discharge gates of spray towers are connected with drying tower 6, drying tower 6 locates the 2 downside of spray towers, and 6 air chambers of drying tower pass through cooling blower 7 and are connected with dehumidification unit 8, and 6 gaseous phase exports of drying tower are connected with spray towers 2, and 6 discharge gates of drying tower are connected with belt 9. In this embodiment, the high-pressure pump 1 is a plunger type high-pressure pump, and the difference between the 6 th position of the powder spraying tower 2 and the 6 th position of the drying tower is more than 3 m.
Preferably, the powder spraying tower 2 and the drying tower 6 are both composed of a tower body and a gas chamber, the tower body and the gas chamber are separated by a partition plate, a fixed hood is arranged on the partition plate, and a gas guide plate and a gas distribution plate are arranged in the gas chamber.
Preferably, the powder spraying tower 2 and the drying tower 6 are provided with regulating valves 10 at the outlets, and the regulating valves 10 are pneumatic regulating valves. The material level of the boiling layer of the two towers is respectively controlled by the adjusting valve 10, so that the retention time of the material in the two towers is ensured.
Preferably, pressure gauges are arranged on the powder spraying tower 2 and the drying tower 6, so that the pressure conditions of the powder spraying tower 2 and the drying tower 6 can be better monitored, and the safety is improved.
Preferably, the dehumidifier unit 8 is an energy-saving type refrigeration dehumidifier unit. The refrigerating unit and the dehumidifying system are integrated in one box body, and the occupied area is small. After dehumidification, the temperature of cold air can be reduced to 20-25 ℃, and the relative humidity can be controlled to be about 40.
Preferably, a nozzle is arranged at the top of the powder spraying tower 2, and the arrangement can prevent accumulation after too concentrated feeding.
Preferably, a temperature sensor is arranged on the tower body of the powder spraying tower 2, a control valve of the steam hot blast stove 4 is an electric valve, and the temperature sensor is electrically connected with the electric valve through a controller. The temperature can be automatically controlled by the arrangement, the index control is more stable, and the environment is more friendly.
Preferably, a plurality of groups of heating pipes are arranged in the steam hot blast stove 4. Specifically adopt two sets of heating pipes in this embodiment, a set of by concentrated comdenstion water heating, another group is by 0.5MPa low pressure steam heating, and the comdenstion water is gathered and is collected the back and is exported to the boiler oxygen-eliminating device. Concentrated condensate water is used as a first-stage heating source, so that more energy is saved.
The working principle of the embodiment is as follows: the concentrated slurry from the monoammonium phosphate heater is pressurized to 8.0MPa by a high-pressure pump 1, then sent to the top of a powder spraying tower 2, atomized by a nozzle and then freely falls from top to bottom in the powder spraying tower 2. Air is heated by a steam hot air furnace 4 and then is sent into a powder spraying tower 2 by a hot air blower 3, and is dried in a countercurrent way with ammonium phosphate liquid drops from top to bottom, dried tail gas is washed by a tail gas washing tower 5 and then is emptied, and powder overflows to a drying tower 6 through a discharge hole. After the air is dehumidified by the dehumidifier unit 8, the cold air with proper temperature and humidity cools and dries the powder in the drying tower 6, further reduces the moisture of the fertilizer, and simultaneously reduces the temperature of the fertilizer to below 40 ℃. The cooled material is conveyed to a finished product package through a belt 9 for packaging.
The utility model discloses can realize the automatic control of 2 dry hot air temperature in dusting tower, avoid the influence of temperature fluctuation to finished product moisture. After secondary drying and cooling in the cooling and drying tower 6, the moisture content of the finished product is further reduced, the temperature of the finished product fertilizer can be stably controlled within 40 ℃, and the risk of caking of the finished product is greatly reduced.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (8)
1. The utility model provides an improve monoammonium phosphate product quality's device, includes high-pressure pump (1), its characterized in that: high-pressure pump (1) is connected with spray tower (2) top of the tower, and spray tower (2) air chamber passes through air heater (3) to be connected with steam hot-blast furnace (4), and spray tower (2) gas phase export is connected with tail gas scrubbing tower (5), and spray tower (2) discharge gate is connected with drying tower (6), spray tower (2) downside is located in drying tower (6), and drying tower (6) air chamber passes through cooling blower (7) to be connected with dehumidification unit (8), and drying tower (6) gas phase export is connected with spray tower (2), and drying tower (6) discharge gate is connected with belt (9).
2. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: the powder spraying tower (2) and the drying tower (6) are both composed of a tower body and an air chamber, the tower body and the air chamber are separated by a partition plate, a fixed air cap is arranged on the partition plate, and a gas guide plate and a gas distribution plate are arranged in the air chamber.
3. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: the powder spraying tower (2) and the drying tower (6) are respectively provided with a regulating valve (10), and the regulating valves (10) adopt pneumatic regulating valves.
4. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: pressure gauges are arranged on the powder spraying tower (2) and the drying tower (6).
5. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: the dehumidification unit (8) adopts an energy-saving refrigeration dehumidification unit.
6. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: the top of the powder spraying tower (2) is provided with a nozzle.
7. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: a tower body of the powder spraying tower (2) is provided with a temperature sensor, a control valve of the steam hot blast stove (4) is an electric valve, and the temperature sensor and the electric valve are electrically connected through a controller.
8. The apparatus of claim 1, wherein the apparatus is configured to improve the quality of the monoammonium phosphate product: a plurality of groups of heating pipes are arranged in the steam hot blast stove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220499998.4U CN217092089U (en) | 2022-03-09 | 2022-03-09 | Device for improving quality of monoammonium phosphate product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220499998.4U CN217092089U (en) | 2022-03-09 | 2022-03-09 | Device for improving quality of monoammonium phosphate product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217092089U true CN217092089U (en) | 2022-08-02 |
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ID=82600037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220499998.4U Active CN217092089U (en) | 2022-03-09 | 2022-03-09 | Device for improving quality of monoammonium phosphate product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217092089U (en) |
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2022
- 2022-03-09 CN CN202220499998.4U patent/CN217092089U/en active Active
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