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Products | EVA

EVA drying technology is well established and has been proven over many years in a number of International Tobacco groups.


High performance drying versatility

EVA is a closed loop, low Oxygen system which uses superheated steam as the drying medium. The low Oxygen allows relatively high process temperatures to be used without the risk of oxidising or changing the nature of the tobacco.

The rapid drying effect, which is due to the high drying gas temperature and its composition, results in enhanced fill value.
The pressure inside the dryer is controlled to be slightly positive, thus minimising any inward or outward leakage. This enables low Oxygen levels to be maintained with relatively small amounts of steam injection.

One of the major advantages of the EVA process is that product can be fed directly from the cutter to the dryer without the need for any additional pre-process equipment for conditioning or heating the product. The soft cutting features of the Garbuio Dickinson SD cutters make this machine particularly suitable for directly feeding the EVA dryer.
Product leaving the EVA dryer is immediately lifted and pneumatically conveyed in a classifying pneumatic transport system. This performs the dual function of removing any unwanted heavy particles, and rapidly cools the tobacco close to ambient conditions in order to maintain the fill value achieved in the EVA dryer.

The EVA process exhaust passes through an air blast condenser which converts it to a cool, biodegradable liquid which can be simply disposed of in the normal sewer system. The small quantities of non-condensables remaining in the exhaust present little problem since they are cool, but for critical applications in sensitive locations these are easily treated by additional equipment.
Energy efficiency of the EVA dryer is high, with a specially designed gas or oil fired process heater. Hot gases from the burner are recirculated over a tubular heat exchanger, resulting in relatively low temperatures for those parts in contact with the process gas. This minimises potential degradation of volatiles present in the process gas, which might otherwise affect the taste of the product.

For even higher thermal efficiencies, combustion air preheat can be offered for the larger sizes of EVA dryers.

Depending on the type of tobacco being processed, optional clean-in-place features can be provided to clean critical areas of the dryer internals. In any case, the EVA is designed to provide excellent access for internal cleaning and inspection of the product infeed and drying column.

  • Well proven cost effective expansion process
  • Maximises fill value
  • Suitable for both lamina and stem
  • No pre-processing required
  • Simple and compact
  • Energy efficient
  • Simple, effective exhaust treatment
  • Minimal off-spec tobacco

ITALY Contact

Tel: +39 0422 431 140
Fax: +39 0422 431 153

UK Contact

Tel: +44 (0)1962 842222
Fax: +44 (0)1962 840567

USA Contact

Tel: 001 804 279 0020
Fax: 001 804 279 0025


Tel: +86 21 5113 0380
Fax: +86 21 5113 0379