CN213202964U - A dewaxing unit for maize oil production system - Google Patents

Abstract

The utility model discloses a dewaxing unit for maize oil production system, it is provided with the heat exchanger including cooler, crystallizer group, growing brilliant jar, filter and the clear oil storage tank that dewaxes that connect gradually between filter and the clear oil storage tank that dewaxes. The advantages are that: a premixing tank is added between the crystallization tank group and the crystal growing tank, the mixed liquid and the diatomite are premixed through the premixing tank, the uniformity of the mixed liquid entering each crystal growing tank can be enhanced, the uniformity of subsequent crystal growing and the dewaxing effect are enhanced, and the quality of oil products is improved; meanwhile, the system structure is simplified, and the equipment cost is reduced; in addition, the dewaxing clear oil and the alkali refining clear oil exchange heat through a heat exchanger, so that the exchange of cold and heat is realized, the utilization rate of energy is improved, and the energy consumption is reduced; the unique stirring structural design in the premixing tank can enhance the mixing uniformity, and is favorable for improving the subsequent crystal growing uniformity and dewaxing efficiency.

Description

A dewaxing unit for maize oil production system

The technical field is as follows:

the utility model relates to a refined technical field of maize oil, specifically speaking relate to a dewaxing unit for maize oil production system.

Background art:

the corn oil, also called maize oil and maize germ oil, is extracted from maize germ, the system for producing corn oil by maize germ mainly comprises a pretreatment unit, a leaching unit and a refining unit, wherein the pretreatment unit comprises a vibrating screen, a crusher, a softening pot, a flaking mill and an oil press, crude corn oil and a residue cake are separated after the pretreatment unit, the crude corn oil enters the refining unit for further impurity removal and purification, and the residue cake contains 18% of crude oil, so the crude corn oil is sent to the leaching system for further recovery of the crude oil.

The refining unit comprises an alkali refining system, a dewaxing system, a decoloring system and a deodorization system which are connected in sequence, the wax content of the maize germ oil is 0.01-0.04%, and the wax content of the oil causes cloud point to be increased, transparency and digestibility to be reduced, and gas taste and palatability to be poor; can get rid of grease wax through the unit of dewaxing, promote oil quality, the unit of dewaxing generally includes the cooler that connects gradually, the crystallizer group, the growing crystal jar, filter and dewaxing clear oil storage tank, alkali refining clear oil that alkali refining unit came is sent into after cooler cooling to process temperature and is got into the crystallizer group, through multistage cooling crystallization, later send into a plurality of parallelly connected growing crystal jars and carry out mechanical stirring, simultaneously to each growing crystal jar add diatomaceous earth in order to adsorb the wax, later send into the filter and filter the waxy impurity, discharged filtrating gets into dewaxing clear oil storage tank storage for dewaxing clear oil, later send into the deodorization process after heating through the heater. The dewaxing unit has the following problems during operation: 1. each crystal growing tank needs to be provided with a separate diatomite adding tank, the system is complex, and the equipment cost is high; 2. the temperature of alkali refining clear oil from the alkali refining unit is high, a cooler is required for cooling treatment, heat cannot be effectively utilized, energy consumption of the cooler is increased, and production cost is increased.

The utility model has the following contents:

an object of the utility model is to provide a dewaxing unit for maize oil production system can effectively improve dewaxing effect.

The utility model discloses by following technical scheme implement: a dewaxing unit for a corn oil production system comprises a cooler, a crystallizing tank group, a crystal growing tank, a filter and a dewaxing clear oil storage tank which are sequentially connected, wherein a heat exchanger is arranged between the filter and the dewaxing clear oil storage tank, a cold medium inlet of the heat exchanger is communicated with a liquid outlet of the filter, and a cold medium outlet of the heat exchanger is communicated with an inlet of the dewaxing clear oil storage tank; and a heat medium outlet of the heat exchanger is connected with an inlet pipeline of the cooler.

Further, a premixing tank is arranged between the crystallizing tank group and the crystal growing tank, an outlet of the crystallizing tank group is connected with an inlet pipeline of the premixing tank, and an outlet of the premixing tank is connected with inlet pipelines of the crystal growing tanks.

Further, the premixing tank comprises a tank body, a motor and a stirring structure, wherein a diatomite adding port is formed in the top of the tank body, an inlet is formed in the upper part of the tank body, and an outlet is formed in the lower part of the tank body; the motor with an output shaft vertically arranged is fixed in the middle of the top end of the tank body, the stirring structure is rotatably arranged in the tank body, and a rotating shaft of the stirring structure is coaxially fixed with the output shaft of the motor; the stirring structure comprises a rotating shaft, a lower stirring blade is fixed at the bottom end of the rotating shaft, and the shape of the lower stirring blade is matched with that of the bottom of the tank body; a plurality of downward-rotating stirring blades which are obliquely arranged are fixed at the upper part of the rotating shaft, and the downward-rotating stirring blades form a downward-rotating impeller; an upper spiral blade is fixed on the rotating shaft between the lower stirring blade and the lower stirring blade.

Further, the bottom mounting of the jar body has a supporting seat, the bottom of pivot is rotated and is set up the inside of supporting seat.

The utility model has the advantages that: a premixing tank is added between the crystallization tank group and the crystal growing tank, the mixed liquid and the diatomite are premixed through the premixing tank, the uniformity of the mixed liquid entering each crystal growing tank can be enhanced, the uniformity of subsequent crystal growing and the dewaxing effect are enhanced, and the quality of oil products is improved; meanwhile, the system structure is simplified, and the equipment cost is reduced; in addition, the dewaxing clear oil and the alkali refining clear oil exchange heat through a heat exchanger, so that the exchange of cold and heat is realized, the utilization rate of energy is improved, and the energy consumption is reduced; the unique stirring structural design in the premixing tank can enhance the mixing uniformity, and is favorable for improving the subsequent crystal growing uniformity and dewaxing efficiency.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the premix tank.

The device comprises a cooler 1, a crystallizing tank group 2, a crystal growing tank 3, a filter 4, a dewaxing clear oil storage tank 5, a heat exchanger 6, a premixing tank 7, a tank body 7.1, a motor 7.2, a stirring structure 7.3, a rotating shaft 7.3.1, a lower stirring blade 7.3.2, a lower stirring blade 7.3.3, an upper spiral blade 7.3.4, a diatomite adding port 7.4, a premixing inlet 7.5, a premixing outlet 7.6 and a supporting seat 7.7.

The specific implementation mode is as follows:

in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and fig. 2, a dewaxing unit for a corn oil production system comprises a cooler 1, a crystallizing tank group 2, a crystal growing tank 3, a filter 4 and a dewaxed clean oil storage tank 5 which are connected in sequence, wherein a heat exchanger 6 is arranged between the filter 4 and the dewaxed clean oil storage tank 5, a cold medium inlet of the heat exchanger 6 is communicated with a liquid outlet of the filter 4, and a cold medium outlet of the heat exchanger 6 is communicated with an inlet of the dewaxed clean oil storage tank 5; the heat medium outlet of the heat exchanger 6 is connected with the inlet pipeline of the cooler 1; a premixing tank 7 is arranged between the crystallization tank group 2 and the crystal growing tanks 3, the outlet of the crystallization tank group 2 is connected with the inlet pipeline of the premixing tank 7, and the outlet of the premixing tank 7 is connected with the inlet pipeline of each crystal growing tank 3; the cooler 1 cools the alkali refined clear oil to a process temperature, then feeds the alkali refined clear oil into the crystallizing tank group 2, performs multi-stage cooling crystallization, then feeds the alkali refined clear oil into the premixing tank 7, simultaneously adds diatomite into the premixing tank 7, pre-mixes the alkali refined clear oil and the diatomite in the premixing tank 7 to enhance the mixing uniformity, and then feeds the alkali refined clear oil into each crystal growing tank 3 through a pipeline, so that the mixing uniformity of the diatomite and the oil can be enhanced, the subsequent crystal growing uniformity and the dewaxing effect can be enhanced, and the quality of the oil can be improved; meanwhile, the system is simplified, and the equipment cost is reduced; the crystal grains continue to grow up in the crystal growing tank 3, and the mixed solution is sent to a filter 4 to filter out wax-containing impurities after the crystal growing is finished; the dewaxed clear oil enters the heat exchanger 6, the alkali refining clear oil enters the heat exchanger 6 through a heat medium inlet of the heat exchanger before entering the cooler 1, and heat is provided for the dewaxed clear oil, so that the energy consumption of a subsequent decoloring unit heater is reduced, and meanwhile, the dewaxed clear oil absorbs the heat of the alkali refining clear oil, so that the energy consumption of the cooler 1 can be reduced;

specifically, the premixing tank 7 comprises a tank body 7.1, a motor 7.2 and a stirring structure 7.3, wherein the top of the tank body 7.1 is provided with a diatomite adding port 7.4, the upper part of the tank body 7.1 is provided with a premixing inlet 7.5, and the lower part of the tank body 7.1 is provided with a premixing outlet 7.6; a motor 7.2 with an output shaft vertically arranged is fixed in the middle of the top end of the tank body 7.1, a stirring structure 7.3 is rotatably arranged in the tank body 7.1, and a rotating shaft 7.3.1 of the stirring structure 7.3 is coaxially fixed with the output shaft of the motor 7.2; the stirring structure 7.3 comprises a rotating shaft 7.3.1, a supporting seat 7.7 is fixed at the bottom end of the tank body 7.1, and the bottom end of the rotating shaft 7.3.1 is rotatably arranged inside the supporting seat 7.7; the supporting seat 7.7 plays a supporting role for the bottom end of the rotating shaft 7.3.1, and the stability of the rotating shaft 7.3.1 is enhanced; a lower stirring blade 7.3.2 is fixed at the bottom end of the rotating shaft 7.3.1, and the shape of the lower stirring blade 7.3.2 is matched with the bottom of the tank body 7.1; a plurality of downward-rotating stirring blades 7.3.3 which are obliquely arranged are fixed at the upper part of the rotating shaft 7.3.1; an upper spiral blade 7.3.4 is fixed on a rotating shaft 7.3.1 between the lower stirring blade 7.3.3 and the lower stirring blade 7.3.2; when the rotating shaft 7.3.1 rotates, the lower rotary stirring blade 7.3.3 is driven to rotate downwards, and the upper rotary helical blade 7.3.4 is driven to rotate upwards; liquid discharged from the crystallizing tank group 2 enters the tank body through a premixing inlet 7.5, diatomite is added into the tank body 7.1 through a diatomite adding port 7.4, a motor 7.2 is started, the motor 7.2 drives a rotating shaft to rotate, the rotating shaft 7.3.1 drives a lower stirring blade 7.3.2, a lower stirring blade 7.3.3 and an upper rotating helical blade 7.3.4 to rotate simultaneously in the rotating process, wherein the lower stirring blade 7.3.2 can stir the bottom of the tank body 7.1 to prevent the diatomite from depositing, the upper rotating helical blade 7.3.4 can stir the mixture in the middle of the tank body 7.1 and stir the mixture upwards, and the lower rotating stirring blade 7.3.3 can stir the mixture at the upper part of the tank body 7.1 and stir the liquid downwards; the lower stirring blade 7.3.2, the lower stirring blade 7.3.3 and the upper spiral blade 7.3.4 are matched, so that the mixture can be fully stirred, the mixing uniformity of the diatomite and the oil product is enhanced, the uniformity of subsequent crystal growing and the dewaxing effect are enhanced, and the improvement of the quality of the oil product is facilitated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (4)

1. A dewaxing unit for a corn oil production system comprises a cooler, a crystallizing tank group, a crystal growing tank, a filter and a dewaxing clear oil storage tank which are sequentially connected, and is characterized in that a heat exchanger is arranged between the filter and the dewaxing clear oil storage tank, a cold medium inlet of the heat exchanger is communicated with a liquid outlet of the filter, and a cold medium outlet of the heat exchanger is communicated with an inlet of the dewaxing clear oil storage tank; and a heat medium outlet of the heat exchanger is connected with an inlet pipeline of the cooler.

2. The dewaxing unit for a corn oil production system according to claim 1, wherein a premixing tank is arranged between the crystallization tank group and the crystallization tank, an outlet of the crystallization tank group is connected with an inlet pipeline of the premixing tank, and an outlet of the premixing tank is connected with an inlet pipeline of each crystallization tank.

3. The dewaxing unit for a corn oil production system according to claim 2, wherein the premixing tank comprises a tank body, a motor and a stirring structure, a diatomite adding port is formed in the top of the tank body, an inlet is formed in the upper part of the tank body, and an outlet is formed in the lower part of the tank body; the motor with an output shaft vertically arranged is fixed in the middle of the top end of the tank body, the stirring structure is rotatably arranged in the tank body, and a rotating shaft of the stirring structure is coaxially fixed with the output shaft of the motor; the stirring structure comprises a rotating shaft, a lower stirring blade is fixed at the bottom end of the rotating shaft, and the shape of the lower stirring blade is matched with that of the bottom of the tank body; a plurality of downward-rotating stirring blades which are obliquely arranged are fixed at the upper part of the rotating shaft, and the downward-rotating stirring blades form a downward-rotating impeller; an upper spiral blade is fixed on the rotating shaft between the lower stirring blade and the lower stirring blade.

4. The dewaxing unit for a corn oil production system of claim 3, wherein a support base is fixed to a bottom end of the tank body, and a bottom end of the rotating shaft is rotatably disposed inside the support base.

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