EP3147588A1 - Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln - Google Patents

Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln Download PDF

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Publication number
EP3147588A1
EP3147588A1 EP15461564.5A EP15461564A EP3147588A1 EP 3147588 A1 EP3147588 A1 EP 3147588A1 EP 15461564 A EP15461564 A EP 15461564A EP 3147588 A1 EP3147588 A1 EP 3147588A1
Authority
EP
European Patent Office
Prior art keywords
cooler
air
compressor
fertilizer
outside air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15461564.5A
Other languages
English (en)
French (fr)
Inventor
Boguslaw Zakrzewski
Tomasz Lokietek
Wojciech Tuchowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
Original Assignee
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zachodniopomorski Uniwersytet Technologiczny w Szczecinie filed Critical Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
Priority to EP15461564.5A priority Critical patent/EP3147588A1/de
Publication of EP3147588A1 publication Critical patent/EP3147588A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D1/00—Devices using naturally cold air or cold water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
    • F25B19/02—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour using fluid jet, e.g. of steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/004—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being air

Definitions

  • Invention provides a cooling method of fertilizers and cooling system for cooling of fertilizers.
  • Solution of the invention is carried out with the use of cooling ambient air in a cooler, eg. a drum cooler (using open gaseous refrigerant circuit with atmospheric air as a refrigerant).
  • a cooler eg. a drum cooler (using open gaseous refrigerant circuit with atmospheric air as a refrigerant).
  • a method for cooling of fertilizers in the cooler according to the invention consisting in cooling the fertilizers outside air at atmospheric pressure whose flow is induced fan, characterized in that the outside air prior to delivery to the cooler is compressed in at least one compressor to a pressure of between 4 to 15 bar. Is discharged from outside air any excess water and dried, for example in the membrane cooler outside air or sprayed water cooler (adiabatic cooling) or by the refrigeration apparatus, then the air is expanded to a pressure close to or equal to atmospheric pressure and cooled at the same time and then directed to the cooler.
  • the outside air prior to the compressor is compressed further in the initial compressor taking advantage of the work of expansion to the pre-compression air.
  • a system for cooling fertilizers comprising a fertilizer cooler, fan, characterized in that it contains at least one compressor for the compression of air to a pressure in the range of 4 to 15 bar, connected to at least one wet tank (which separates the excess water) which is connected to the air dryer (air dehumidification and / or cooling the compressed air and can be located behind or inside the wet tank).
  • These elements are connected via at least one expansion device to the inlet of to the fertilizer cooler.
  • the inlet to the cooler can be connected to the external supply air duct to the cooler.
  • the system there may be other elements used in the compressed air as filters, droplet separators, the reservoir of dry air etc.
  • the system has an auxiliary fan from air intake to the cooler.
  • Auxiliary fan intensifies the air flow and is switched on for example when the temperature of the fertilizer at the outlet of the cooler is too high (higher than required) and the outdoor air has a temperature less than fertilizer after leaving the cooler.
  • the system before the expansion device is connected with the compressed air, for example fitted to an industrial plant in which the solution according to the invention is applied.
  • This installation can be connected front of the expansion device to support the work of the proposed cooling system (fertilizer or as other loose material) or a first degree of compression.
  • This system if it contains at least a compressor, a wet tank and a dehumidifier, and produces a suitable amount of the dried air at a pressure of 4-15 bar can replace the compressor, dryer and wet tank in proposed arrangement.
  • the system has pre-compressor (the first stage of compression) connected to the expansion device, which is connected to at least one compressor (the second stage of compression).
  • Pre-compressor is connected to a compressed air reservoir which is connected to at least one compressor. This allows for the storage air in the compressed air tank, and then use it later to optimize the system operation.
  • the system has a cooling system controller, which is connected to temperature sensors and / or humidity of outside air: of the inlet of the cooler and / or out of the system.
  • the controller may also be connected with a temperature sensor of the fertilizer at the outlet of the cooler and / or a temperature sensor and humidity expanded at the inlet of the cooler.
  • the controller may also be connected to the expansion device and / or dehumidifier and at least one compressor.
  • the controller based on the measured temperature and humidity activates the compressors, the initial compressor, dryer, auxiliary fan, opens the expansion device, the reservoir of compressed air.
  • the controller can be connected to all or selected elements of the system.
  • the system with the pre-compressor has a controller cooling system, which is connected to temperature sensors and / or humidity of outside air: of the inlet of the cooler and / or out of the system.
  • a controller may also be connected to a temperature sensor fertilizer at the outlet of the cooler and / or a temperature sensor and / or humidity expanded air at the inlet of the cooler and to the expansion device, pre-compressor and / or compressed air reservoir and / or dryer, and at least one compressor.
  • the controller can be connected to all or selected elements of the system.
  • Expansion device comprises at least one nozzle and / or the expansion valve or at least one expander.
  • the advantages of the present invention is the ability to connect to an existing compressed air system at the production plant to increase the capacity reserves of compressed air in periods without the cooling demand, the possibility of air accumulation during the night and expansion with peaks load (moderate power consumption), use expansion air to drive the pre-compressor, cooled expanded air is mixed with the outside air flowing to the fertilizer cooler in a proportion of from 10 to 50%.
  • FIG. 1 shows a system according to the invention
  • Fig. 2 shows the system of Fig. 1 with the controller and the compressed air installation
  • Fig. 3 shows a system of the pre-compressor and a compressed air tank 7.
  • a system for cooling fertilizer contains the fertilizer drum cooler 1 and the fan 2 It has three compressors 3 connected to a wet tank 4, which is connected to the air dryer 5, which are connected via the expansion device 6 with a fertilizer drum cooler 1 at the inlet of outside air to the cooler 1 .
  • Outside air is pumped via a fertilizer drum cooler 1 by the fan 2.
  • Compressors 3 compress the air to a pressure of 4 bar and pressing them into the wet tank 4 wherein excess water is isolated.
  • the compressed air is dried in the dryer 5. After drying, the air is expanded in the expansion device (expansion valve) 6 and directed to the inlet of the cooler 1, where it mixed with the outside air.
  • the expansion device 6 has the form of a nozzle.
  • One compressor 3 compresses the air to a pressure of 15 bar.
  • the system is equipped with an auxiliary fan 7 placed on the cooler 1 in place to draw outside air to the cooler 1. Fan 7 intensifies the flow of the outside air, additionally using a fan air can be heated or cooled.
  • Example II The system and method carried out analogously to Example II, wherein the set of compressors 3 compresses the air to a pressure of 7 bar.
  • a compressed air installation 8 which supports the operation of compressors 3.
  • Example II or III wherein the system has a controller 9 of the cooling system, which is connected with temperature and humidity sensor outdoor air of the inlet to the cooler 1 and the outside of the system, a temperature sensor of fertilizer at the outlet of the cooler 1, a temperature and humidity sensor expanded air of the inlet to the cooler 1, the expansion device 6 and the set of compressors 3.
  • the controller 9 activates the auxiliary fan 7 in order to enhance the flow of air passing through the cooler 1.
  • the controller 9 also activates the compressor 3, and opens the expansion device 6 allowing the flow of compressed / decompressed air.
  • the controller 9 can control the cooling system of the expanded air, so as not to exceed the critical value of the relative humidity of the inlet to the cooler 1.
  • Example IV The system and method carried out analogously to Example IV, wherein the system behind the expansion device 6 is connected to the pre-compressor 10 by the shaft (or pre-compressor and expander are in one device), which is connected with a tank 11 for compressed air.
  • the tank 11 is connected to the compressor unit 3. Thanks to the expansion work the outside air is compressed in compressor 10 and directed to the tank 11 for the compressed air.
  • Example V The system and method carried out analogously to Example V wherein the system is not connected to the compressed air system 8 and the auxiliary fan 7.
  • Example V The system and method carried out analogously to Example V, wherein the system is not equipped with a controller 9, and the opening and closing elements of the system made by hand.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fertilizers (AREA)
EP15461564.5A 2015-09-23 2015-09-23 Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln Withdrawn EP3147588A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15461564.5A EP3147588A1 (de) 2015-09-23 2015-09-23 Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15461564.5A EP3147588A1 (de) 2015-09-23 2015-09-23 Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln

Publications (1)

Publication Number Publication Date
EP3147588A1 true EP3147588A1 (de) 2017-03-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15461564.5A Withdrawn EP3147588A1 (de) 2015-09-23 2015-09-23 Verfahren zum kühlen von düngemitteln und system zum kühlen von düngemitteln

Country Status (1)

Country Link
EP (1) EP3147588A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107266270A (zh) * 2017-06-16 2017-10-20 四川玖泰肥业科技有限公司 高冷却效率的肥料颗粒分散装置
CN116371290A (zh) * 2023-03-09 2023-07-04 扬州日发干燥工程有限公司 一种肥料的成型固化装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941743A1 (de) * 1999-09-02 2001-03-15 Snitsarenko Zaharenko Viktor S Verfahren und Anlage zur Kälteerzeugung mit Luft als Kältemittel und Kälteträger
JP2004219020A (ja) * 2003-01-17 2004-08-05 Shimadzu Corp 冷却除湿システム
US6925818B1 (en) * 2003-07-07 2005-08-09 Cryogenic Group, Inc. Air cycle pre-cooling system for air separation unit
CN201343504Y (zh) * 2009-02-10 2009-11-11 张从军 复混肥冷却机空气除湿装置
CN104406377A (zh) 2014-12-21 2015-03-11 遵义联谷农业科技有限公司 一种化肥烘干筛选机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941743A1 (de) * 1999-09-02 2001-03-15 Snitsarenko Zaharenko Viktor S Verfahren und Anlage zur Kälteerzeugung mit Luft als Kältemittel und Kälteträger
JP2004219020A (ja) * 2003-01-17 2004-08-05 Shimadzu Corp 冷却除湿システム
US6925818B1 (en) * 2003-07-07 2005-08-09 Cryogenic Group, Inc. Air cycle pre-cooling system for air separation unit
CN201343504Y (zh) * 2009-02-10 2009-11-11 张从军 复混肥冷却机空气除湿装置
CN104406377A (zh) 2014-12-21 2015-03-11 遵义联谷农业科技有限公司 一种化肥烘干筛选机

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107266270A (zh) * 2017-06-16 2017-10-20 四川玖泰肥业科技有限公司 高冷却效率的肥料颗粒分散装置
CN116371290A (zh) * 2023-03-09 2023-07-04 扬州日发干燥工程有限公司 一种肥料的成型固化装置
CN116371290B (zh) * 2023-03-09 2023-10-17 扬州日发干燥工程有限公司 一种肥料的成型固化装置

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