JPH0616804B2 - Jet type stripper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention efficiently separates odorous components in oils and fats in a short time.
The present invention relates to a fat and oil deodorizing device that can be removed, and a jet-type stripper suitable for use as a stripper that evaporates and separates volatile components dissolved in a liquid.

[Conventional technology]

Conventionally, for example, Japanese Patent Application Laid-Open No.
As disclosed in Japanese Patent No. 152903, raw material fats and oils are introduced into a plurality of trays provided vertically connected in a deodorizing tower in a decompressed state, and steam is blown into the fats and oils to produce an odor. An apparatus is used that volatilizes and removes components.

[Problems to be solved by the invention]

However, in the above-mentioned conventional fat and oil deodorizing apparatus, it is usual to require a long deodorizing time of 45 to 90 minutes after heating the fat and oil.
In addition, due to the structure of the deodorizing device, the target deodorizing effect cannot be obtained unless a high degree of vacuum of about 2 to 4 torr is created, which requires a lot of energy.

The present invention has been made in view of the above points, and can be realized in a short time (1
The purpose is to provide a jet-type stripper that can deodorize almost instantaneously within a minute) and deodorize at a vacuum degree of about 6 torr, thus reducing the amount of water vapor for vacuum generation. . Further, the present invention aims to provide a jet stripper that evaporates and separates volatile components dissolved in a liquid by blowing gas into the liquid and jetting the liquid with the gas to separate the volatile components as a thin film. It is what

[Means for solving problems]

Referring to the drawings, the jet-type stripper of the present invention is provided with a plurality of trays 2 in a vertical direction in a tower 1, and forms a rising portion 3 for gas between the tray and the inner wall of the tower or outside. Then, the liquid inlet pipe 4 was connected to the uppermost tray, the adjacent trays were connected with the liquid descending pipe 5, the steam supply pipe 8 was connected to each tray, and the liquid outlet pipe 6 was connected to the lowermost tray. In the oil / fat deodorizing device, a water vapor supply pipe 8 is connected to the lower end of the vertical portion 7 of the liquid inlet pipe 4 and the lower end of the liquid descending pipe 5 of each tray to form a gas-liquid mixing pipe 10, and the tip of this gas-liquid mixing pipe is formed. It is characterized in that a vertical jet pipe 11 having an open upper end is connected in series, and a jet impingement plate 12 is provided on the upper end of the vertical jet pipe.

[Work]

When the above stripper is used for deodorizing fats and oils, steam is blown into the fats and oils under reduced pressure, and when deodorizing the fats and oils, the jets of steam blow the fats and oils, and the jet impingement plate 12
The odorous components are separated as a thin film by contacting with, and while the hot water falls from the upper side to the lower side due to gravity, the number of tray trays is blown to surely make contact and mixing with steam, and this is repeated. Deodorized in a very short time.

When the above stripper is used for evaporation / separation of volatile components dissolved in the liquid, gas is blown into the liquid and the liquid is jetted to separate the volatile components as a thin film.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings for the case of deodorizing oil and fat. Reference numeral 1 denotes a decompression deodorization tower whose inside is maintained in a substantially vacuum state. A plurality of trays 2 are provided in the deodorization tower 1 in a vertical direction, and a gas rising portion 3 is provided between the tray 2 and the inner wall of the deodorization tower. Are formed. An oil inlet pipe 4 is connected to the uppermost tray, an adjoining tray is connected with an oil descending pipe 5, and an oil outlet pipe 6 for deodorized oil is connected to the lowermost tray.

The vapor supply pipe 8 is connected to the lower end of the vertical portion 7 of the oil inlet pipe 4 and the lower end of the oil descending pipe 5 of each tray to form a gas-liquid mixing pipe 10. At the tip of the gas-liquid mixing pipe 10, A vertical jet pipe 11 having an open upper end is continuously provided in an L shape, and a jet impingement plate 12 is provided on the upper end of the vertical jet pipe 11.
As the jet impingement plate 12, for example, as shown in the drawing, a flat conical sloped surface is curved upward so that oil is dispersed in a thin film form. 13 is a steam inlet pipe, 14 is a gas outlet, 15 is a steam amount control valve,
Reference numeral 16 is a drain outlet.

In the apparatus configured as described above, oil and fat at about 250 ° C. is normally supplied from the oil inlet pipe 4, and the steam is blown from the steam supply pipe 8 to cause the oil to flow from the vertical jet pipe 11 into a jet state. It contacts the jet impingement plate 12 and scatters in a thin film state. From the oil in a thin film state, the blown-in water vapor and the odorous component are vaporized and separated, and flow out from the gas rising portion 3 to the gas outlet 14. The scattered oil is received by tray 2,
The oil descending pipe 5 is moved to the lower tray, and the same state is repeated. The number of tray stages is determined by the oil inlet properties, oil outlet properties, and the like.

〔The invention's effect〕

Since the present invention is configured as described above, the liquid only falls by gravity in the deodorization tower, and the time is extremely short (usually within 1 minute), so that deodorization can be performed almost instantaneously. it can. Moreover, because it is a jet thin film deodorization, it is not necessary to raise the degree of vacuum to 2 to 4 torr unlike the conventional method, it is possible to deodorize at about 6 torr, and the amount of water vapor for vacuum generation is also reduced compared to the conventional method to save energy. It has excellent effects such as

In addition, the device of the present invention can be used to evaporate volatile components dissolved in liquid
Even when used for separation, the same action and effect as described above can be obtained.

[Brief description of drawings]

The drawings are explanatory views showing an example of the jet-type stripper of the present invention. 1 ... Vacuum deodorization tower, 2 ... Tray, 3 ... Gas rising section,
4 ... Oil inlet pipe, 5 ... Oil down pipe, 6 ... Oil outlet pipe, 7
...... Vertical part, 8 ...... Steam supply pipe, 10 ...... Gas-liquid mixing pipe, 11 ...... Vertical jet pipe, 12 ...... Jet collision plate, 13 ...
… Steam inlet pipe, 14 …… Gas outlet, 15 …… Steam amount control valve, 16 …… Drain outlet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Honami 399-174 Kusanagi, Shimizu City, Shizuoka Prefecture (72) Inventor Hitoshi Kubo 1-7-40 Oiwake, Shimizu City, Shizuoka Prefecture Inventor Shigeru Fujiwara Shimizu, Shizuoka Prefecture Ichikai 1-7-40 (56) References Japanese Patent Laid-Open No. 52-152903 (JP, A)

Claims (3)

[Claims] 1. A plurality of trays are provided in the tower in the vertical direction, and a gas rising portion is formed between the tray and the inner wall of the tower or outside the tower, and a liquid inlet pipe is connected to the uppermost tray to be adjacent to each other. In a stripper with trays connected by liquid downcomers, steam supply pipes connected to each tray, and liquid outlet pipes connected to the bottom tray, at the lower end of the vertical part of the liquid inlet pipe and the lower end of the liquid downcomer of each tray. A vapor-liquid mixing pipe is formed by connecting a steam supply pipe, and a vertical jet pipe having an open upper end is continuously provided at the tip of the gas-liquid mixing pipe.
A jet-type stripper, characterized in that a jet impingement plate is provided on the upper end of the vertical jet pipe. 2. The jet type stripper according to claim 1, wherein the tower is a vacuum deodorizing tower and the liquid is oil and fat and is used as an oil and fat deodorizing device. 3. The jet stripper according to claim 1, which is used as a stripper for evaporating and separating volatile components dissolved in a liquid.