Dry Milling Corn Germ Processing Technology

Corn is one of the major food crops, occupied a very important position in grain production. This high nutritious corn germ has high content of nutrients oily protein, fat, starch, sugar and vitamins. In addition to food, corn is one of the wider applications of industrial raw materials.

Located at the base of corn kernel, corn germ is taking up one-third of its volume, weight accounting for about 10-14 %. Corn kernels fat distribution in the vast majority of embryos, generally up to 34-47 %, and an average of 95.8 percent digestibility, high nutritional value. Since fat contains unsaturated fatty acids, easily oxidized deterioration, to safe custody of corn germ brought some difficulties. Therefore, embryos should be made in corn milling machine as far as possible, so that consumers cannot only get a higher value to increase oil resources, but also conducive to the safe custody of products, improve product quality goods.

Dry Corn germ milling process principles

In the study mentioned of dry corn germ milling machine, it is quite important to master the characteristics of the various parts of the corn, take reasonable processing methods, use high-efficiency equipment, on the one hand corn embryo as complete shedding, on the other hand the separation of a mixture of various substances to maximize yield and purity germ.

The main component of the endosperm has brittle cornstarch composition, low crushing strength. The main component is a fat germ, having elasticity and toughness, is not easy to be broken. For high- moisture corn, difference of corn germ processing is more significant, which provides a reliable basis for corn broken. Specific gravity, the speed difference between the suspension and the coefficient of friction for the embryo, using reasonable residue separation processes of corn germ, separation equipment selection and design provides reliable parameters.

Dry milling Corn germ making method

The adoption of dry corn milling machine method is generally depending on the product quality requirement and uses. The quality of corn flour in addition to required fineness and corn flour color, the fat content is also an important indicator during corn germ processing. Generally the limit of 1%, according to the product's use varies. Such as pasta, require not less than 1% fat content. For the wine industry, requires less than 1% fat content.

Oilmachineworld has recently designed new type dry milling corn germ making machine. There is no need of water addition during the whole process of corn germ making. The dry corn germ milling machine is quite reasonable processing method to get high quality corn germ with little breaks and residual. In addition, there is no water addition, thus no need of drying after corn germ removal. Dry corn germ milling is an efficient way to get high quality germ, save cost and electric consumption etc.

Coconut Oil Pressing Machine Makes Coconut Oil

Advantages of copra oil – healthy edible fat

Coconut oil is lauric oil, which could be a special edible fat with the foremost abounding carboxylic acid. it's wealthy in dodecanoic acid, whose formula is [CH3 (CH2) 10COOH]. Since there square measure presences of high levels of copra oil carboxylic acid with low carbon, though saturated carboxylic acid content is over ninetieth, the temperature of copra oil is barely twenty four ~ twenty seven ℃.

Under temperature, copra oil is semi-solid, its main element is dodecanoic acid, saturated fatty acid and saturated fatty acid with completely different temperature of forty four ℃, fifty four ℃ and sixty three ℃. rock bottom temperature of the very best temperature gap is barely nineteen ℃. There solely somewhat distinction among their set up fat melting inform, leading to a slender vary of copra oil forming. The rigid a part of the fractionated copra oil is coconut fat as cocoa butter material. Copra oil flavor is especially because of the presence of trace amounts of δ- lactone and γ- lactone, that build copra oil incorporates a butter flavor.

Dry copra oil pressing machine process flow:
Copra as a beginning material comprising, or provided from the shaper or screw oil pressing machine to press copra oil from material. The mechanical ironed copra oil is taken second extraction with a solvent, as a supplement to the residue-recovered hm.

Step One: copra oil Pressing Machine method line
Copra magnet, automatic scale grinding machine, steaming deep-fried quenched device, screw oil pressing machine, filter, subsidence tank, crude copra oil

Step Two: material preparation and prepressing
The perform a hundred and fifteen ℃ horizontal steaming pan deep-fried quenched 20min distilled underneath these conditions, the breakdown of fat cells, and phospholipids precipitate to three wet. When steaming and cookery, identical size blanks is pressing unceasingly in oil pressing machine to urge copra oil. Salt virgin bore section of the tapered finish to export oil in most cases in accordance with the uniform discharge graph decreasing. In general, the processed of copra oil pressing machine obtained cake residue was seven-membered.

Step three: copra oil Pressing
Efficient operation of the screw oil pressing machine wants steamed coconut deep-fried and quenched billet temperature management between ninety one ~ ninety three ℃, ninety one ℃ below the water underneath the conditions of over four wheel drive, copra oil billet lower. whereas ninety three ℃ on top of, the water content of but third underneath conditions of low oil yield from coconut blanks manufactured from dark oil and coke cake on to urge. separate fine particles and precipitation doesn't exceed 100% of the contemporary raw materials so as to avoid speculation within the press when treatment with steam quenched part formation fines.

Step Four: Treatment method when copra oil pressing
Coconut oil obtaining out from screw oil pressing machine flows into screens and oil clarification tank, begin to separate the particles, which can be mixed with the material along into the system, so processed to edible fat per ton of higher clay mixed with ten weight unit of edible fat obtained when filtration. The copra oil is distributed into storage or any process of copra oil hm (cake) into the filter press over when granulation, fabric to animal feed plant.

Subcritical No. 4 Solvent Extraction Production Line

Subcritical extraction technology is a bit different from common used no. 6 solvent oil extraction machine. This advanced subcritical fluid extraction is mainly used to extract oil from those of precious oilseeds such as tomato seed, grape seed, watermelon seed, pumpkin seed, walnut kernel etc.

Oil extraction technology pioneered in 1855 by E.Deiss (Franch), and formed a production scale industry in 1870. The application of oil extraction sufficiently improves utilization of plant oil. There are at least 12 kinds of solvent used for extraction: e.g., carbon disulfide; crude hydrocarbon fuel; ethanol; method of water; petroleum hydrocarbons; benzene; halogenated hydrocarbons; isopropanol; formaldehyde, furfural; one, acetone, methyl ethyl ketone, supercritical carbon dioxide; mixed solvent etc.

The domestic edible oil extraction mainly uses 6# solvent, foreigners generally uses industrial hexane, octane or pentane for oil extraction.
4# solvent (the main component of liquefied propane, butane) oil extraction technology is also called subcritical extraction technology. It is a very new oil production technology, which has significant economic and social benefits while comparing with 6# solvent.

Subcritical No.4 solvent extraction featured characteristics:
● Normal temperature extraction, low temperature desolventization
● No destroy of active substance and plant protein of oil materials in oil extraction
● Applicable for precious oil and vegetal protein extraction
● Low vapor consumption, reduces 80% coal consumption in oil processing
● Low cost, big scale, and low environmental protection

Subcritical 4# solvent oil extraction principle:

4# solvent is purified from liquefied petroleum gas, consisting of propane, butane, boiling point is below 0 ℃. Oil extraction machine is processing under pressure (0.1-0.7Mpa liquid state) and room temperature to realize normal temperature oil extraction. Solvent in extracted meal and crude oil is removed at low temperature and vacuum. Solvent is cycled use after liquefaction.

Crude oil quality after subcritical 4# solvent extraction:
4# solvent has low boiling point, pure ingredients, and low residual solvent after extraction, low extraction temperature, good selection, less pigment, phospholipids and other impurities. No. solvent subcritical oil extraction method is an efficient method to maintain original flavor of oil, and keep maintain protein content from being changed caused by high temperature extraction and desolvent etc. The normal temperature subcritical solvent extraction machine is highly recommend choice for extraction of treasured oilseed materials.

Subcritical Solvent Extraction Technology Introduction

Subcritical solvent extraction adopts advanced designed process of those of precious oilseeds. It realizes high efficiency low temperature desolventization, low solvent residual of less than 1% and high oil content. This is complete different extraction methods from formal used 6# solvent. No. 4 solvent (main component of liquefied propane and butane) oil extraction technology is also called subcritical extraction technology. No. 4 solvent oil extraction technology is a complete new oil production technology. It is a somewhat more advanced extraction method than traditional No. 6 solvent oil production line. It has bigger social and economic benefits than No. 6 solvent oil extracting method.

Subcritical Solvent Extraction Processing Line

Features of subcritical No. 4 solvent extraction processing line:
● Normal temperature oil extraction and low temperature desolventization. The featured characteristic cannot destroy the active substance and plant protein in oil extraction. It provides convenient condition for precious oilseed extraction and development of plant protein.
● Low steam consumption. Owing to requirement of normal temperature extraction, there is no need of high temperature evaporation. It reduces nearly 80% coal consumption in extraction process. Thus, it reduces the project investment and industry waste emissions.
● Lower cost than supercritical extraction. The advantage of large-scale oil pressing machine plant has caused it a very popular oil extraction method. It has been fully replaced supercritical technology.

Working principle of subcritical solvent extraction processing line:
This is a more simple and environmental protective oil extraction technology than normal used method. No. 4 solvents are purified from lliquefied petroleum gas, consisting of propane, butane, boiling point is below 0 ℃. Extraction is processing under certain pressure (0.1 ~ 0.7Mpa liquid state) and under room temperature, achieving room temperature oil extraction. Solvent in crude oil and meal removes at a low temperature and vacuum state. Solvent cycles use after liquefaction.

Processing Flow of subcritical solvent oil extraction:
● Oil materials enters into extraction tank   
● solvent pump injects 4# solvent into oil extraction tank for oil material immersion
● solvent pump pumps mixed oil to evaporative tank
● connect extraction tank and suction port of compressor in order to gasify solvent residual in meal, enters into compressor. Solvent flows into solvent turnover tank after compressing, condensing and liquefy in condenser for reuse. Meal discharges from extraction system.
● mix oil enters into evaporation system in order to separate crude oil and evaporate 4# solvent. Evaporated solvent is reused after compressing and liquefy, and crude oil discharges from extraction system.

Featured by low boiling point, pure ingredients, low residual solvent, and low leaching temperature, good selection, crude oil after subcritical solvent extraction are always in good oil quality as well as good quality extracting meal. It has low cost spending on electricity, coal and vapor. It is a very popular and environmental protection project acceptable by more and more users worldwide.