| 摘要 |
The use of infrared and gas burner radiant emitters in tunnel-ty pe, rotary and inclined kilns, together with supporting jackets is well established. There is a need, however, for more comprehensive geometry in this apparatus in order to provide in the one jacket (20), duct spaces (24, 28, 30, 32) for electric leads and/or gas supply, oxygen/air for the gas supply, coolant(s), additive(s), withdrawal of by-product(s) including fumes and wiring for monitoring and process control. The emitters (44) are formed by longitudinal extrusion and the ducts therein are formed in the same way and extend fully therethrough. A generally concave, preferably parabolic, recess (38) is provided along the length of the emitter to house the radiation source, with a reflecting surface (40) to direct the heat energy away from the jacket. A cover (42) made of quartz glass is mounted over the recess (38) to define an enclosed chamber. The integrated apparatus is used to treat nuts, peas and beans, such as soya, faba, cocoa, coffee, fruit and vegetables, starches, grains and cereals by such processes as roasting, blanching, instantising (pre-cooking), cooking, preservation, gelatinisation, sterilisation, drying, disinfestation, devitalisation and expansion. |
