CN103484244B - A kind of High-vacuum grease deodorization device - Google Patents

Abstract

The invention relates to a high-vacuum oil deodorization device, in particular to a high-vacuum oil deodorization device for oil deodorization. It solves the problems of low deodorization rate, high oil trans fatty acid, and deep deodorized oil color in the current deodorization tower application, and aims to create a reasonable and feasible new deodorization process equipment for the oil deodorization process. The technical scheme adopted by the present invention to solve the above technical problems is: a deodorization device for grease under high vacuum, which includes a device housing, a heater and an oil return pipe, and the heater is arranged at the center of the device housing from top to bottom , a plurality of circular heater groups surround the inner casing, the upper end of the device casing is provided with an oil inlet pipe and the side is provided with an oil outlet, and the lower end of the device casing is provided with a circulating oil pipe.

Description

A grease deodorization device under high vacuum

technical field

The invention relates to a grease deodorization device, in particular to a grease deodorization device under high vacuum.

Background technique

The beany smell of oil is mainly derived from some volatile substances in oil, and the quality of beany smell of oil is closely related to the composition and content of fatty acids in oil. This is mainly because the free fatty acids in the oil, especially some unsaturated fatty acids, are very prone to chemical reactions such as addition to their unsaturated bonds, forming compounds with a unique "smell", which makes the oil have a beany smell. Therefore, for high-quality oil products, especially edible oil products, the deodorization method is used to remove unnecessary odors in the oil to improve the quality and stability of the oil.

In the oil refining process, the deodorization process is a very important process and operation unit, and its main equipment, the deodorization tower, is the core of the entire oil deodorization process; at present, the deodorization towers used more in the domestic oil refining process are mainly divided into: plate type There are several types of towers, packed towers and soft towers; and the most commonly used in actual production is the plate tower.

Contents of the invention

The purpose of the present invention is to provide a grease deodorization device under high vacuum degree to solve the problems of deodorization under low vacuum degree, high content of trans fatty acid, dark oil color, low deodorization rate and high energy waste. The purpose is to invent a reasonable and feasible deodorization process equipment for the oil deodorization process.

The technical solution adopted by the present invention to solve the above technical problems is: a high-vacuum grease deodorization device, which includes a device housing, a heater and an oil return pipe, and the heater is arranged at the center of the device housing from top to bottom. A plurality of circular heater groups surround the inner casing, the upper end of the device casing is provided with an oil inlet pipe and the side is provided with an oil outlet, and the lower end of the device casing is provided with a circulating oil pipe.

The above-mentioned high-vacuum deodorization tower has a simple structure and strong operability. After the decolorized oil enters the deodorization tower, the material is heated in a high-vacuum state. The passive structure of the oil prolongs the residence time of the oil in the deodorization tower, so that the heat-sensitive pigment in the oil is completely decomposed, thus achieving a good thermal decolorization effect.

The invention has the following beneficial effects: the amount of steam per ton of deodorized oil is 15-25kg, the acid value of oil after deodorization is 0.17-0.27 (KOH)/(mg/g), the refining rate of oil is increased by 0.5-0.7%, and the content of trans fatty acid The lowest is 13.2%, the color of oil is reduced by 17-33%, the deodorization rate is increased by 26-33%, and the energy is saved by 30%. It is beneficial to realize large-scale industrial production, has strong continuity and production stability, and can be used in various The production of oil is refined, and the operation is simple, and the maintenance is simple and easy.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Detailed ways

Specific embodiment 1: This embodiment is described in conjunction with Fig. 1. This embodiment includes the outer casing (3), the inner casing (6), the oil return pipe (2) and the multiple reactors arranged in the inner casing (6) of the reactor. A heater group (5), the heater (5) is arranged in the center of the device casing from top to bottom, a plurality of circular heater groups (5) are evenly arranged in a circle around the inner casing (6), and the inner An oil inlet pipe (4) is arranged on the upper end of the casing (6), and an oil outlet pipe (7) is arranged on the upper end of the outer casing of the device.

The inner casing (6) and the outer casing (3) of the device are circular, and there is an oil return pipe (2) in the outer casing, and the lower end of the oil return pipe (2) is connected to the motor (1), and the crude oil enters the device through the oil inlet pipe (4) In the casing (6), under the action of the heater (5), it enters the outer casing (3) through the oil return pipe (2) to exchange heat with the oil in the inner casing (6), and then exits through the oil outlet pipe (7) Oil.

Each ton of deodorized oil requires 15~25kg of steam, the acid value of the oil after deodorization is 0.17~0.27 (KOH)/(mg/g), the energy consumption is saved by 30%, the oil refining rate is increased by 0.5~0.7%, and the color is reduced by 17~ 32%, and the deodorization rate increased by 26~33%.

Equipment parameters and indicators: the height of the deodorization tower is 13m, the diameter of the outer shell is 5m, the diameter of the inner shell is 4m, the diameter of the oil inlet pipe and the oil outlet pipe is 300mm, there are 6 circular heaters in each layer, the diameter is 0.5m, and the height of the oil return pipe is 10m. The oil outlet pipe is 8m high. Working principle: The oil to be deodorized enters the deodorization tower from the oil inlet pipe 4, is heated by the heater 5, and enters six levels for heating in turn. After the heating is completed, it enters the deodorization tower again through the oil return pipe 2, and then passes through the second to fourth level, and then through the oil outlet pipe 7 oil.

Claims (3)

1. a High-vacuum grease deodorization device, it is characterized in that multiple Heater group (5) that it comprises crust of the device body (3), inner housing (6), used oil pipe (2) and is arranged in reactor shell, Heater group (5) is arranged on the center in device case from top to bottom, multiple circular shape heater group (5) is 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 crust of the device body is provided with oil outlet pipe (7);

Device inner housing (6) and body skin (3) are circular, used oil pipe (2) is had in body skin, 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 housing (6), under Heater group (5) effect, enter in body skin (3) through used oil pipe (2) and heat exchange is carried out to oil in inner housing (6), then fuel-displaced through oil outlet pipe (7).

2. a kind of High-vacuum grease deodorization device according to claim 1, is characterized in that grease is fuel-displaced under a high vacuum.

3. a kind of High-vacuum grease deodorization device according to claim 1, is characterized in that the rear grease with newly coming in of grease backflow is by heat exchange, makes the grease of newly coming in heat up, saves the energy.