torrefaction

Torrefaction leads to a dry product with no biological activity like rotting.

This energy (the volatiles) can be used as a heating fuel for the torrefaction process.

The cooperative purchased and installed a new torrefaction plant in which the local coffee was processed.

Manufacturers can use torrefaction, carbonization, or varying degrees of pyrolysis.

Torrefaction alone typically decreases energy density, though it allows the material to be more easily pelletized or briquetted.

Torrefaction of biomass leads to improved grindability of biomass.

When high volumes are needed, torrefaction can make biomass from distant sources price competitive because of denser material easier to store and transport.

La Colombe Torrefaction supplies the espresso beans.

The history of torrefaction goes back to the beginning of the 19th century, and it was also used on a large scale during the Second World War.

Finally, torrefaction of straw with pelletisation is gaining attention, because it increases the energy density of the resource, making it possible to transport it still further.

Mr. O'Connell, 29, works for La Colombe Torrefaction, a coffee roasting company and cafe in Philadelphia.

Researchers concluded that torrefaction and carbonization are the most efficient forms of drying out biomass, but the use of the briquette determines which method should be used.

Pure Coffee La Colombe Torrefaction (130 South 19th Street, 215-563-0860; www.lacolombe.com) pours only unflavored house blends into single-size mugs.

High-end coffee companies like Illy Caffè, LavAzza and La Colombe Torrefaction now sell pre-measured single-serve espresso capsules, or pods.

Anaerobic digestion is generally used to produce ethanol, pyrolysis is used to produce pyrolysis-oil (which is solidified biogas), and torrefaction is used to create "biomass-coal".

During the torrefaction process, the water contained in the biomass as well as superfluous volatiles are released, and the biopolymers (cellulose, hemicellulose and lignin) partly decompose giving off various types of volatiles.

The basic alternatives of combustion, torrefaction, pyrolysis, and gasification are separated principally by the extent to which the chemical reactions involved are allowed to proceed (mainly controlled by the availability of oxygen and conversion temperature).

With relation to brewing and food products, torrefaction occurs when a cereal (barley, maize, oats, wheat, etc.) is cooked at high temperature to gelatinise the starch endosperm creating the expansion of the grain and creating a puffed appearance.

Cyrus Harding and Neb were taken into confidence, and the sailor suspected nothing during the whole time, necessarily somewhat long, which was required in order to dry the small leaves, chop them up, and subject them to a certain torrefaction on hot stones.

In order to create highly efficient biomass-to-energy chains, torrefaction of biomass in combination with densification (pelletisation or briquetting) is a promising step to overcome logistic economics in large-scale sustainable energy solutions, i.e. make it easier to transport and store it.

Torrefaction, also referred to as Torrefecation (French for roasting), of biomass, e.g. wood, can be described as a mild form of pyrolysis at temperatures typically ranging between 200 and 320 C. During torrefaction, the biomass properties are changed to obtain a much better fuel quality for combustion and gasification applications.