Tuberous starch slurry-residue separation technique by screening and pressure filtration

Abstract

The invention provides a tuberous starch slurry-residue separation technique by screening and pressure filtration, which modifies slurry-residue separation procedures in tuberous starch production, and combines a vertical screen, a filter press and screen cleansing into a complete stereoscopic elevation difference technological process, wherein the vertical screen is used for separating residues from slurry by means of centrifugal force, the filter press is used for separating the residues from the slurry by means of extrusion force, and the vertical screen and the filter press in matched use can avoid the problem of poor cleanliness when tuberous residues are treated by vertical screen equipment, so that slurry-residue separation effect can be more effectively improved, feeding once is achieved, and multiple procedures including matched use of the emulsion slurry, the residues and process water, pressure drying of the tuberous residues can be completed by means of multiple screening and pressure filtration. Besides, power, automation, the amount of equipment, process water consumption and labor forces can be greatly reduced, the technique has the advantage of saving of operation cost and energy, emulsion slurry concentration is improved, starch extraction ratio is increased, and good technical effect is achieved.

Description

technical field [0001] The invention relates to a process for separating potato starch pulp and dregs, which is especially suitable for cassava starch processing. Background technique [0002] The pulp and residue separation process after cassava crushing is one of the key processes in starch production. Whether the pulp and residue separation is thorough directly affects the yield of starch. The earlier traditional pulp and residue separation process used self-made curved screens, vibrating flat screens and other equipment. These equipments use gravity to separate, and the separation efficiency is low, and the equipment is relatively heavy and occupies too much area. At present, some domestic equipment manufacturers have absorbed and digested some imported equipment, and produced a vertical pulp and residue continuous separator (referred to as vertical screen). Multi-stage washing and screening are carried out to separate solids and impurities from starch milk, which can e...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for separating potato starch pulp and dregs by screening and pressing filtration, which solves the problems of complicated separation process and high operating cost of potato starch pulp and dregs at present.

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