CN103589508A

CN103589508A - Environment-friendly type filter process for edible oil

Info

Publication number: CN103589508A
Application number: CN201210284880.0A
Authority: CN
Inventors: 李宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2014-02-19

Abstract

The invention relates to an environment-friendly type filter process for edible oil. In a winterization process of degreasing and de-waxing of the edible oil, cellulose with an amount of 0.1% that of the oil is added in a crystallization tank and a maturing tank and is mixed with the edible oil; after the crystallization and maturing processes are finished, the matured edible oil is pumped into a plate and frame filter or a box-type filter by a screw pump having no influence on crystalline particles so as to carry out pre-coating; when the coating is formed, the coating has good a filter channel for rapidly supplying the edible oil for filtration; solid waxiness or lipid are left on the pre-coated layer; a finished product of the edible oil flows into an oil groove through the filter channel and then enters an oil tank for storage. A hot-discharge filter is adopted as the filet. When the thickness of a filter layer reaches that a filter effect is not obvious, a steam is introduced in to heat the solid waxiness or lipid so as to melt the solid waxiness or lipid into a liquid, and thus automatic discharge of residues can be achieved; the whole system is provided with two or more filters to carry out continuous filtration; and the continuous filtration of the edible oil can be completed only by switching a valve.

Description

Environment-friendly type edible oil filtration process

Technical field:

The product the present invention relates to, is widely used in various types of food oils dewaxings, degreasing process; Operating time is shortened, extend the work-ing life of filter; Make the content reduction of processed oil wax or fat improve the quality of products and reduce comprehensive cost, be conducive to environment environmental protection.

Background technology:

At present, domestic each big-and-middle-sized food oils company edible oil dewaxing, degreasing process major part all adopt diatomite to carry out pre-coat process poor effect; The diatomite adding in flame filter press use procedure mixes and is deposited on precoated layer with the impurity in the middle of filtering fluid, new like this filtering layer constantly forms, diatomite particle has natural cavernous structure, so the impurity in stoste can be held back, reaches the object of solid-liquid separation.Diatomite particle degree diameter changes greatly.First the forming process of diatomite precoated layer is that some little particles can pass non-woven fabrics gap, and the particle of suitable size is set up " bridge " type structure, after stable " bridge " set up, forms suitable precoated layer, this process need certain hour.In the normal filtration stage; lasting rising along with filter pressure in plate filter sheet frame; in precoated layer, there is " bridge " to collapse under pressure, at this moment have a small amount of diatomite particle to enter in the filtration fluid after filtration through non-woven fabrics, until set up new " bridge " structure.Filtration dries up the wet cake density of rear diatomite filter cake in 400g/L left and right.Use diatomite filtration, in the filtration sheet frame of 1 square metre, filter filter cake thickness 20mm, filter cake weight 8kg after drying up, wherein diatomite 4k g, carclazyte 1kg, metallic particles 0.6kg, filter blow in after filter cake oleaginousness 30%, weight is 2.4kg; Diatomite usage quantity, residual oil content are higher; Diatomite filter cake after filtration contains more residue and mineralogical composition.Diatom penus nonmetalliferous ore, is mainly the mineral substance that forms of many small crystal structure on basis by silicic acid component, and the silicic acid crystal containing at the IARC of WHO international research office of World Health Organization confirmation diatomite in 1987 is carcinogenic.The related product of this project can address the above problem.

Summary of the invention:

The product that this project is related, organic cellulose edible oil defatted, that the winterization process using plant of dewaxing is purified is flocculating aids; In crystallizer, add Mierocrystalline cellulose, allow edible oil Mierocrystalline cellulose in crystallisation process play the effect of nucleus, make the crystallization of wax in crystallizer or fat easier, safer; The wax group or the fat group that in maturator, form are larger, and small-particle wax group or fat group are still less; The flocculating aids adding in crystallization maturator still less.Mierocrystalline cellulose adopts natural organic matter to process, as: maize peel, wheat bran etc.; By product after filtration can be used as animal-feed or compost treatment event can environmental protection.The Mierocrystalline cellulose using on plate filter is mainly distributed in diameter 15-2un, 0-8un, and 0r length 60r distributes more even.In precoating process, because Mierocrystalline cellulose is soft cylindrical shape, less by the Mierocrystalline cellulose of non-woven fabrics, and can form more rapidly precoated layer.In the normal filtration stage, do not exist pressure by " bridge " phenomenon of crushing, so can reach high degree of cleaning.Fiber have less wet cake density and oleaginousness, and consumption reduces use cost less.

Technical solution:

The product that this project is related, edible oil defatted, dewaxing winterization technique time; In crystallizer, maturator, add the Mierocrystalline cellulose of oil mass 0.1%, it is mixed with edible oil; After crystallization, growing the grain operation complete, the spiral pump do not affect crystalline particle by adopting squeezes into sheet frame or chamber type filter carries out precoating; After coating formation, there is good filtration channel and to edible oil, filter fast; Solid wax or lipid are stayed on precoated layer, and finished product edible oil after filtration passage flows to after oil groove and enters in oil tank and store.Filter adopts heat to unload filter, when thickness of filter bed has reached filter effect, passes into steam when unconspicuous and makes to be melted into liquid after solid wax or lipid absorption heat, carries out automatic clinker-removing; In the system of haveing suffered, be provided with two or many filters, filter in turn; Only need switch valve just can complete edible oil continuous filtration work.

Accompanying drawing explanation:

Below in conjunction with drawings and Examples, the present invention is further described, and Fig. 1 is schematic diagram of the present invention.

As shown in Figure 1:

1. refrigerant tank 2. refrigerator 3. crystallizers, maturator 4. high level tanks

5. turbid, the edible vegetable oil case of flame filter press 6. spiral pump 7. impeller pumps 8.

9. air compressor machine

Embodiment:

The related product of this project, is provided with four crystallizations, maturator 3 in system as shown in Figure 1, according to 0.1% proportional arrangement Mierocrystalline cellulose of the capacity oil mass of crystallization, maturator; Stirring under cutter stirring of crystallization, maturator, Mierocrystalline cellulose is fully mixed with edible oil, in edible oil crystallisation process, Mierocrystalline cellulose plays the effect of nucleus; After reasonable time, there are granular solid wax or solid fat to separate out; By the adjustment of frequency transformer, the speed of rotation of crystallization, maturator 3 motors is slowed down; It is more complete more solid that the particle maintenance of crystallization becomes.Open crystallization, maturator 3 bottom valves and utilize the effect of gravity, the good edible oil of a part of growing the grain is pressed into flame filter press 5 and filters; Granular solid wax or solid fat and flocculating aids Mierocrystalline cellulose first form precoated layer, and pure edible oil enters turbid, edible vegetable oil case 8 through the passage of precoated layer through the oil groove of flame filter press 5.Turbid, edible vegetable oil case 8 roily oil casees and edible vegetable oil case are set to one, by valve roily oil first out, enter roily oil case; Roily oil is returned to crystallization, maturator 3 through impeller pump 7; After edible oil change is limpid, the valve of opening edible vegetable oil case makes finished product edible oil enter edible vegetable oil case.When crystallization, maturator 3 liquid level low pressures inadequate, when filter 5 can not filter; Open spiral pump 6 edible oil of crystallization, maturator 3 is squeezed into high level tank 4, by high level tank 4 and the difference of altitude of flame filter press 5, filter; Because the flame filter press 5 that arranges in system is two or many, when granular solid wax or solid fat, filter when coating is more and more thicker reaches certain thickness, by valve, switch the edible oil that makes need to filter and from a flame filter press, be switched to another flame filter press and filter; Thereby reach continuous production.The flame filter press with thick filtration coating is passed into steam and make it filter painting melting layer, liquid wax or fat enter cake wax or the fat dish that flame filter press 5 is provided with; The flocculating aids Mierocrystalline cellulose being bonded on filter cloth carries out separation; Mierocrystalline cellulose after separation is just reusable.

Claims

1. according to 0.1% proportional arrangement Mierocrystalline cellulose of the capacity oil mass of crystallization, maturator.

2. stirring under cutter stirring of crystallization, maturator, Mierocrystalline cellulose is fully mixed with edible oil, in edible oil crystallisation process, Mierocrystalline cellulose plays the effect of nucleus; After reasonable time, there are granular solid wax or solid fat to separate out; By the adjustment of frequency transformer, the speed of rotation of crystallization, maturator motor is slowed down; It is more complete more solid that the particle maintenance of crystallization becomes.

3. open crystallization, maturator bottom valve and utilize the effect of gravity, the good edible oil of a part of growing the grain is pressed into flame filter press and filters; Granular solid wax or solid fat and flocculating aids Mierocrystalline cellulose first form precoated layer, and pure edible oil enters turbid, edible vegetable oil case through the passage of precoated layer through the oil groove of flame filter press.

4. when crystallization, maturator liquid level low pressure are inadequate, when filter can not filter; Open spiral pump the edible oil of crystallization, maturator is squeezed into high level tank, by the difference of altitude of high level tank and flame filter press, filter.

5. two or many of the flame filter presses arranging in system, when granular solid wax or solid fat, filter when coating is more and more thicker reaches certain thickness, by valve, switch the edible oil that makes need to filter and from a flame filter press, be switched to another flame filter press and filter; Thereby reach continuous production.

6. have the flame filter press of thick filtration coating to pass into steam and it is filtered be coated with melting layer, liquid wax or fat enter cake wax or the fat dish that flame filter press is provided with; The flocculating aids Mierocrystalline cellulose being bonded on filter cloth carries out separation; Mierocrystalline cellulose after separation is just reusable.