Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F26—DRYING
  • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
  • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
  • F26B25/005—Treatment of dryer exhaust gases
  • F26B25/007—Dust filtering; Exhaust dust filters

Definitions

• the invention relates to a drying plant for the drying of organic products, particularly agricultural products, and of the kind disclosed in the preamble to claim 1.
• drying plants for the drying of various agricultural products, e.g. grain and vegetables.
• Such drying plants are very energy- demanding, which naturally applies especially to plants arranged for the drying of green crops with very high water content. Therefore, the very high energy prices make it attractive to produce a drying plant with less energy comsumption per evaporated ton of water, while at the same time avoiding some of the
• the object of the invention is to provide a drying plant of the kind disclosed in the preamble to claim 1, which both reduces the consumption of energy and the number of stoppages for cleaning of the discharge system, and where the plant obtained can be adjusted for the drying of widely different crops. This is achieved by configuring the plant according to the invention as characterized in claim 1.
• the capacity of the plant becomes adjustable, which is a great practical advantage, even though the greatest advantage is probably that the plant can be used for any kind of comminuted organic product which is required to be dried down.
• the discharge air from the dust separation elements can be fed to their individual discharge pipes, but is preferably fed to a common discharge pipe as disclosed and characterized in claim 3.
• the plant according to the invention can be configured as disclosed and characterized in claim 4. This results in a very efficient cleaning of the discharge air.
• a cyclofan is a cyclone with its own ventilator and ejection device for the collected mass of particles.
• the plant according to the invention can be configured as disclosed and characterized in claim 5, whereby it is a simple matter to ensure constant flow rates in each discharge pipe, all the way from the drop chamber to the chimney.
• the individual discharge pipes do not, however, need to have the same capacity or cross-sectional area in order to achieve the desired effect.
• the reference figure 1 indicates a heating apparatus, e.g. an oil burner or a gas burner, in connection with a stationary oven 2 which supplies hot air to a drum drier 3 with inlet pipe 9 for the product to be dried.
• the product to be dried can be grain, vegetable crops or any other crushed or comminuted product with a certain water content which is desired to be dried off, either partly or completely.
• the discharge end of the drum drier 3 leads into a discharge housing 4, from the bottom of which the dried products are removed by means of a conveyor 5, and from the top of which the discharge air is removed.
• the drawing shows schematically that from the top of the discharge housing there are provided four discharge pipes 11 leading to their individual cyclofans 6, and that each cyclofan has a disharge pipe 10 leading to a common chimney 7.
• Each discharge pipe comprising discharge pipe 11, cyclofan 6 and discharge pipe 10 or 10 , is arranged in such a manner that the velocity of the discharge air and the separation of the particles can be maintained without condensation of the discharge air, which would bind the particles to the walls of the pipes.
• the number of cyclones in operation is adjusted to suit the production and the amount of water in the material which is desired to be dried off.
• the ventilator and conveyor systems with dust or particle separation elements can be operated individually and regulated separately, e.g. by start-stop regulation and also by cascade regulation.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8108718

Family Applications (1)

Country Status (3)

Citations (3)

• 1988
  • 1988-04-06 DK DK187688A patent/DK158404C/da not_active IP Right Cessation
• 1989
  • 1989-04-06 AU AU34233/89A patent/AU3423389A/en not_active Abandoned
  • 1989-04-06 WO PCT/DK1989/000078 patent/WO1989009915A1/en unknown

Patent Citations (3)

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