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US 4,070,351 AGranted
Process for the treatment of vegetable matter with recovery of calories from the dehydration stack gases and applications thereof
AssigneeFrance Luzerne
InventorOlivier de Mathan
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Abstract
A treatment of vegetable matter such as alfalfa with recovery of the calories from the dehydration stack gases is described. The calories in the moist dehydration stack gases are recovered essentially by condensation of the steam contained therein, notably in the first evaporation body for the concentration of the dehydration serum. The process provides a considerable saving of thermal energy in integrated process for dehydrating alfalfa and recovering proteins contained therein.
Claims8
A process of the treatment of vegetable matter comprising:
- a. pressing the vegetable matter to provide a pressing juice and a cake,
- b. dehydrating said cake by passing it into a heated dehydration zone to provide a dehydrated cake and stack gases from the heated dehydration zone.
- c. recycling of a fraction of said stack gases at the input to said heated dehydration zone, said recycling being provided to obtain at the outlet of said heated dehydration zone stack gases having a temperature between about 100 to 120.degree. C and containing CO.sub.2, steam, nitrogen, and oxygen, the pressure being substantially equal to atmospheric pressure, and
- d. concentrating said pressing juice by passing it through a multiple effect evaporator, with the introduction of unrecycled stack gases into the first effect of said evaporator, whereby the steam contained in said unrecycled stack gases is at least partially condensed to provide a condensate and the non-condensable gases are discharged into the atmosphere.
1 more element
Dependencies are inferred from the claim text.