Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of drying method of sweet potato dregs

A drying method and technology of sweet potato slag, applied in the direction of drying solid materials, drying gas arrangement, heating to dry solid materials, etc., can solve the problems of blocking drying equipment, unsatisfactory drying effect, easy to mildew, etc., to ensure safety and sanitation, Energy saving, good quality effect

Active Publication Date: 2020-10-16
CHONGQING ACAD OF AGRI SCI +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In summary, the existing problems in the prior art are: before the sweet potato dregs are dried, problems of sticking to the wall, agglomeration, and blockage of the drying equipment are easy to occur, and the drying effect is not ideal. Mildew

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of drying method of sweet potato dregs
  • A kind of drying method of sweet potato dregs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for drying potato dregs, carried out according to the following steps:

[0035] 1) Enzymolysis treatment: add fruit pulp enzyme to the wet potato residue slurry and keep warm for enzymolysis at 25°C. The amount of pectinase added is 0.1‰ of the slurry mass, and the treatment time is 1.5h;

[0036] 2) Press filtration: put the wet potato residue after enzymatic hydrolysis treatment into a filter bag, place it in a hydraulic press cylinder, place 40Kg / time, press for 30 minutes, and the water content of the filter cake is 67%; or use a belt filter press, belt The speed is controlled at 1m / min, and the water content of the filter cake is 72%;

[0037] 3) Drying: put the squeezed wet potato dregs into a dispersing dryer for initial drying, the drying hot air temperature is 160°C, and the drying time is 30 minutes until the moisture content is 50%; put the initially baked potato dregs into Tube bundle dryer drying, drying hot air temperature 350 ℃, drying time 30mi...

Embodiment 2

[0040] 1) Enzymolysis treatment: add fruit pulp enzyme to the wet potato residue slurry and keep warm for enzymolysis at 35°C. The amount of pectinase added is 1.0‰ of the slurry mass, and the treatment time is 1.0h;

[0041] 2) Press filtration: put the wet potato residue after enzymatic hydrolysis treatment into a filter bag, place it in a hydraulic press cylinder, place 50Kg / time, press for 45 minutes, and the water content of the filter cake is 67%; or use a belt filter press, belt The speed is controlled at 4m / min, and the water content of the filter cake is 70%;

[0042] 3) Drying: Put the squeezed wet potato dregs into a dispersing dryer for initial drying, the drying hot air temperature is 180°C, and the drying time is 45 minutes, until the moisture content is 49%; put the initially baked potato dregs into Tube bundle dryer drying, drying hot air temperature 300 ℃, drying time 40min, to moisture content 14%;

[0043] 4) Preservation: Store the inner and outer packagin...

Embodiment 3

[0045] 1) Enzymolysis treatment: add fruit pulp enzyme to the wet potato residue slurry and keep warm for enzymolysis at 50°C. The amount of pectinase added is 3.0‰ of the slurry mass, and the treatment time is 1.0h;

[0046] 2) Press filtration: put the wet potato residue after enzymatic hydrolysis treatment into a filter bag, place it in a hydraulic press cylinder, place 50Kg / time, press for 60 minutes, and the water content of the filter cake is 68%; or use a belt filter press, belt The speed is controlled at 9m / min, and the water content of the filter cake is 68%;

[0047] 3) Drying: Put the squeezed wet potato dregs into a dispersing dryer for initial drying, the drying hot air temperature is 200°C, and the drying time is 35 minutes, until the moisture content is 48%; put the initially baked potato dregs into Tube bundle dryer drying, drying hot air temperature 300 ℃, drying time 45min, to moisture content 13%;

[0048] 4) Preservation: Store the inner and outer packagin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of food production, and discloses a sweet potato residue drying method. The sweet potato residue drying method comprises the steps of enzymolysis, filter pressing, primary drying, drying, preservation and the like, wherein the enzymolysis step is to reduce the viscosity of sweet potato residues by adopting pectinase; the filter pressing step is to feedwet sweet potato residues into a hydraulic pressing cylinder lined with a filter bag or a belt filter press, and the water content is reduced to 67-75%; the primary drying step is to place the pressedwet sweet potato residues in a single-cylinder dispersing dryer for primary drying, and the water is dried to 48-50%; the drying step is to dry the primary-dried sweet potato residues by a pipe bundle dryer, and the water content is dried to 13-15%; and the preservation step is to inwards and outwards pack and separately store the dried sweet potato residues in a special drying ventilation warehouse.

Description

technical field [0001] The invention belongs to the technical field of food production, in particular to a method for drying sweet potato dregs. Background technique [0002] With the development of sweet potato starch and related products, starch production enterprises will produce a large amount of sweet potato dregs every year. Analysis shows that dry sweet potato dregs contain 8-10% of fiber, 50%-60% of starch, and 10%-15% of water. Protein and other substances 2.0%-3.0%. Sweet potato slag has high water content, is difficult to store, difficult to transport, direct drying consumes a lot of energy, and costs are high. In many starch companies, a small part is used as farm feed, and most of it is directly discarded as waste. The environmental pollution is serious. Before drying, how to dry it? Dehydration and drying are critical for later application. Sweet potato residue is a material with high internal moisture content and high viscosity. Using general drying equipmen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F26B1/00F26B3/02F26B5/14F26B21/10F26B25/22
CPCF26B1/00F26B3/02F26B5/14F26B21/10F26B25/22
Inventor 尹旭敏曾志红曾小峰曾顺德高伦江高飞虎
Owner CHONGQING ACAD OF AGRI SCI