Sugar – starch – and carbohydrates – Apparatus – Hydrolyzing
Patent
1982-07-26
1984-09-04
Smith, William F.
Sugar, starch, and carbohydrates
Apparatus
Hydrolyzing
127 28, 422197, 422202, 422224, C13K 106
Patent
active
044695241
ABSTRACT:
A process and apparatus are described for producing a modified carbohydrate material, preferably starch, in fluid form. In the process a starch slurry is continuously moved through a confined tubular preheat zone where heat is very rapidly transferred to the slurry, whereby the slurry passes through a gelation stage and forms into a hot free flowing liquid. The heat transfer is from superatmospheric steam surrounding at least part of the tubular heating zone, the temperature of the steam and the cross-sectional area of each tubular preheat zone being selected to rapidly transfer heat from the steam throughout the slurry and minimize the magnitude of the zone of high viscosity gel formed during the gelation stage. The hot liquid formed is immediately forced through a restrictive opening and into a confined tubular reaction zone accompanied by a sudden decrease in pressure whereby the starch is made highly reactive. The reactive starch liquid, together with a reactive adjunct such as acid, is then continuously moved through a tubular reaction zone to produce a modified starch product in fluid form. A steam heated reactor for the above process is also described.
REFERENCES:
patent: 3087797 (1963-04-01), Bogart
patent: 4137094 (1979-01-01), Hughes
patent: 4230503 (1980-10-01), Hughes
Assarsson Per G.
Nagasuye Joseph H.
Smith William F.
St. Lawrence Technologies Limited
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