CN111349517A - Novel vegetable oil nitrogen filling process - Google Patents

Abstract

The invention discloses a vegetable oil nitrogen filling process, which is realized by the following steps: cleaning and checking a mixing container for later use, filling food-grade nitrogen into the mixing container, and keeping the nitrogen in the container at a constant pressure; inputting vegetable oil through an oil inlet pipe, and carrying out atomization and ejection through a plurality of atomization nozzles at the top of the container; and step three, the oil mist and the nitrogen are fully contacted to form a state that the nitrogen surrounds oil drops, a liquid level transmitter arranged in the mixing container can ensure that the liquid level is basically unchanged, the oil inlet flow is equal to the oil outlet flow, and the vegetable oil after being filled with the nitrogen is automatically pumped into a storage tank filled with the nitrogen through an oil outlet pipe. The vegetable oil is atomized and diffused through the atomizing nozzle, the contact surface area of the vegetable oil and nitrogen is increased, the vegetable oil can be fully contacted, the quality of the oil containing nitrogen accounts for 0.12-0.18%, the reaction effect is improved, the consumption of nitrogen is obviously reduced, and the expenditure is saved. And overall structure is simple easily processed, has reduced the manufacturing cost of enterprise.

Description

Novel vegetable oil nitrogen filling process

Technical Field

The invention belongs to the technical field of nitrogen filling equipment, and particularly relates to a novel vegetable oil nitrogen filling process.

Background

In the prior art, in plant oil production and processing enterprises, in order to improve the quality of plant oil and prolong the shelf life of the plant oil, nitrogen is filled into the plant oil generally, the gas at the top of the filled plant oil bottle is nitrogen, the plant oil cannot generate oxidation reaction with oxygen, and then the quality of the product is improved and the shelf life is prolonged.

At present, most of common nitrogen filling devices are formed by adding a nitrogen coil pipe at the bottom of an oil tank and filling nitrogen into vegetable oil through a plurality of air holes in the top of the coil pipe, and the mode is simple in equipment transformation and universal in application. However, the nitrogen gas forms large-volume bubbles after being discharged through the air holes, the fusion of the nitrogen gas and the vegetable oil is not sufficient, and the mass of the nitrogen gas accounts for 0.018-0.15% of the vegetable oil after being filled with the nitrogen gas in the traditional technology, so that the nitrogen gas is supplied by increasing the supply amount of the nitrogen gas for improving the effect, and the consumption amount of the nitrogen gas is large and the cost is high.

Disclosure of Invention

The invention aims to solve the technical problems of non-ideal reaction effect, large nitrogen consumption and high cost in the prior art, and provides a vegetable oil nitrogen filling process, which is realized by the following steps:

cleaning and checking a mixing container for later use, filling food-grade nitrogen (with the purity of 99.9%) into the mixing container, and keeping the nitrogen in the mixing container at a constant pressure;

inputting vegetable oil through an oil inlet pipe, and carrying out atomization and ejection through a plurality of atomization nozzles at the top of the container;

and step three, the oil mist and the nitrogen are fully contacted to form a state that the nitrogen surrounds oil drops, a liquid level transmitter arranged in the mixing container can ensure that the liquid level is basically unchanged, the oil inlet flow is equal to the oil outlet flow, and the vegetable oil after being filled with the nitrogen is automatically pumped into a storage tank filled with the nitrogen through an oil outlet pipe.

The invention has reasonable structure and novel design, vegetable oil realizes oil mist diffusion through the atomizing nozzle, the contact surface area of the vegetable oil and nitrogen is increased, the vegetable oil can be fully contacted, the nitrogen content reaches saturation, the nitrogen content of the vegetable oil accounts for 0.12-0.18 percent, the reaction effect is improved, the consumption of the nitrogen is obviously reduced, and the expenditure is saved. And overall structure is simple easily processed, has reduced the manufacturing cost of enterprise.

Detailed Description

Example 1

The invention provides a vegetable oil nitrogen filling process which is realized by the following steps:

cleaning a mixing container of 20-30 cubic meters for later use, filling food-grade nitrogen (purity is 99.9%) into the mixing container, and keeping the nitrogen in the container at a constant pressure of 0.1-0.15 Mpa;

inputting vegetable oil through an oil inlet pipe, wherein the flow of the vegetable oil is 4-6 cubic meters per hour, and carrying out atomization and ejection through a plurality of atomizing nozzles at the top of the container, wherein the oil inlet amount of each atomizing nozzle is 1.5-3.5 liters per minute;

the liquid level in the mixing container is maintained at a position of 4.5-5 cubic meters, and a liquid level transmitter arranged in the mixing container can ensure that the liquid level is basically unchanged, the oil inlet flow is equal to the oil outlet flow, the mixing time is 20-40 minutes, and the nitrogen charging temperature is 15-20 ℃;

and step four, pumping the vegetable oil into a storage tank filled with nitrogen through an automatic pump by the oil outlet pipe.

Example 2

Compared with the traditional vegetable oil nitrogen filling process, the vegetable oil nitrogen filling process has the advantage that the test medium is the first-grade corn oil.

The nitrogen filling process is a test group, the reference group adopts the traditional nitrogen filling process, and the test group and the reference group are respectively provided with 3 containers with the same conditions. Specific comparative parameters are shown in table 1.

TABLE 1

Therefore, compared with the traditional nitrogen filling process, the nitrogen filling process has obvious difference of peroxide values, can obviously reduce the oxidation reaction of the vegetable oil, and has longer storage period.

The invention has reasonable structure and novel design, vegetable oil realizes oil mist diffusion through the atomizing nozzle, the contact surface area of the vegetable oil and nitrogen is increased, the vegetable oil can be fully contacted, the reaction effect is improved, the consumption of nitrogen is obviously reduced, and the expenditure is saved. And overall structure is simple easily processed, has reduced the manufacturing cost of enterprise.

Claims (1)

1. A vegetable oil nitrogen filling process is realized by the following steps:

cleaning and checking a mixing container for later use, filling food-grade nitrogen into the mixing container, and keeping the nitrogen in the container at a constant pressure;

inputting vegetable oil through an oil inlet pipe, and carrying out atomization and ejection through a plurality of atomization nozzles at the top of the container;

and step three, the oil mist and the nitrogen are fully contacted to form a state that the nitrogen surrounds oil drops, a liquid level transmitter arranged in the mixing container can ensure that the liquid level is basically unchanged, the oil inlet flow is equal to the oil outlet flow, and the vegetable oil after being filled with the nitrogen is automatically pumped into a storage tank filled with the nitrogen through an oil outlet pipe.