Grease deodorization device under a kind of condition of high vacuum degree
Technical field
The present invention relates to a kind of grease deodorization device, be specifically related to the grease deodorization device under a kind of condition of high vacuum degree.
Background technology
The beany flavor of grease produces and is mainly derived from some volatile material in grease, and in the quality of grease beany flavor and grease, the composition content of lipid acid is closely related.This is mainly because free fatty acids some unsaturated fatty acidss particularly in grease, and the chemical reactions such as addition very easily occur their unsaturated link(age), generates to have the compound of uniqueness " smell " and make oil have beany flavor.So, for high-quality oil and fat product especially food oils product, adopt the method for deodorization except unnecessary smell in degrease, to improve oily quality and stability.
In the refining course of processing of grease, deodorizing technology is very important operation and operating unit, and its major equipment deodorizing tower is again the core in whole grease deodorization process; In current domestic oil refining process, use more deodorizing tower mainly to divide: tray column, packing tower and soft tower etc. are several; And apply most often tray column in actual production.
Summary of the invention
The purpose of this invention is to provide grease deodorization device under a kind of condition of high vacuum degree, to solve deodorization under current low vacuum condition, content of trans fatty acids is higher, color with oil color is darker, the deodorization rate is lower, the problem that energy dissipation is higher, be intended to invent out for grease deodorization process the deodorizing technology equipment of a reasonable.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: grease deodorization device under a kind of condition of high vacuum degree, it comprises device case, well heater and used oil pipe, well heater is arranged on the center in device case from top to bottom, a plurality of circular shape heater groups are around inner housing, the upper end of device case is provided with the oil inlet pipe side and is provided with oil outlet, and the lower end of device case is provided with circulating pipe.
Above-mentioned condition of high vacuum degree deodorizing tower is simple in structure, workable, after bleached oil enters deodorizing tower, material is heated under the condition of high vacuum degree state, when removing malodor components, due to the equal lattice structure of the uniqueness of every layer of column plate, the passive of grease extended the residence time of grease in deodorizing tower, make the thermo-sensitivity pigment in grease thoroughly decompose, thereby play good heat decoloring effect.
The present invention has following beneficial effect: deodorization grease steam consumption per ton is 15 ~ 25kg, after deodorization, acid value of lipids is 0.17 ~ 0.27(KOH)/(mg/g), improve oil and fat refining rate 0.5 ~ 0.7%, it is 13.2% that content of trans fatty acids hangs down, grease color reduces by 17 ~ 33%, the deodorization rate improves 26 ~ 33%, save the energy 30%, be conducive to realize large-scale industrial production, there is very strong continuity and production stability, can be used for the production refining of multiple oil plant, and easy and simple to handle, maintaining is simple.
The accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment comprises crust of the device body 3, inner housing 6, used oil pipe 2 and a plurality of Heater group 5 that are arranged in reactor inner housing 6, well heater 5 is arranged on the center in device case 6 from top to bottom, a plurality of circular shape heater groups 5 are evenly arranged into a circle around inner housing 6, the upper end of inner housing 6 is provided with oil inlet pipe 4, and the upper end of device case is provided with oil outlet pipe 7.
Device inner housing 6 is circular with body skin 3, used oil pipe 2 is arranged in housing, the lower end of used oil pipe 2 is connected with electric motor 1, crude oil is by oil inlet pipe 4 access to plant inner housings 6, under well heater 5 effects, enter through used oil pipe 2 that body skin 3 is interior carries out heat exchange to the interior oil of inner housing 6, then fuel-displaced through oil outlet pipe 7.
It is 15 ~ 25kg that deodorization grease per ton needs steam consumption, and after deodorization, acid value of lipids is 0.17 ~ 0.27(KOH)/(mg/g), energy consumption saves 30%, improves oil and fat refining rate 0.5 ~ 0.7%, and color and luster reduces by 17 ~ 32%, and the deodorization rate improves 26 ~ 33%.
The device parameter index: deodorization tower height 13m, body skin diameter 5m, the inner housing diameter is 4m, oil inlet pipe and oil outlet pipe diameter are 300mm, every layer totally 6 of circular shape heaters, diameter is 0.5m, the high 10m of used oil pipe, the oil outlet pipe height is 8m.Principle of work: treat that the deodorization grease enters deodorizing tower by oil inlet pipe 4, heated through well heater 5, enter successively six aspects and heated, band has heated by by used oil pipe 2, again entering into deodorizing tower, again successively through two to four aspects, more fuel-displaced through oil outlet pipe 7.