Grease deacidification equipment and deacidification method

A grease and deacidification technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of product quality decline, high operating cost, large amount of stripping steam, etc., to achieve increased contact area, uniform distribution, and low pressure Effect

Active Publication Date: 2014-04-23
陈汉卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unique structure of the plate type deodorization tower, it is divided into upper and lower layers, each layer is divided into 6 to 8 sections, and each layer is equipped with an overflow pipe to keep the oil level between 600 and 900 mm, so that Steam injection must not only overcome the pressure of the oil layer, but also ensure normal water steam distillation, and the amount of steam used for stripping is large; compared with the packed deodorization tower, the plate tower needs to pay 70-90kg more steam for refining 1 ton of oil, and the operating cost is lower. High; if it is not cooled under vacuum conditions, the product quality will decline; the control of deodorization time cannot be flexibly adjusted; long-term deodorization retention can easily cause the peroxide value of oil in the deodorization tower to increase and new pigments More serious is the gradual increase in the content of trans fatty acids in deodorized oil; experiments have shown that at the same deodorization temperature, the content of trans fatty acids in oil will gradually increase with the increase of deodorization time, while at the same During the deodorization time, the content of trans fatty acid in the oil is proportional to the deodorization temperature
The most prominent advantage of the packed tower is saving steam (the amount of steam required in the process of use is less, only about 34% of the steam amount of the ordinary plate deodorization tower, which is 0.8% to 1.3% of the oil weight), low operating costs, and other The advantage is that it can provide an ideal deodorization time, large production capacity, and extremely low loss of neutral oil caused by splashing and hydrolysis; its disadvantage is that the phenomenon of mixing when changing varieties is serious, and it is very sensitive to air leakage and oil coking

Method used

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  • Grease deacidification equipment and deacidification method
  • Grease deacidification equipment and deacidification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The following is an example of processing 100 kilograms of decolorized corn oil per hour to further illustrate the oil and fat deacidification equipment and the deacidification method using the oil and fat deacidification equipment.

[0042] like Figure 1 to Figure 9 As shown, in this embodiment, the present invention provides a grease deacidification device, which includes a first cylinder 100, a second cylinder 200, a third cylinder 300 and a fourth cylinder 400, among which Connection via flange.

[0043] Among them, see figure 1 , the first cylinder 100 includes a vacuum interface 101 , a first heating jacket 102 , a fatty acid outflow port 103 , a fatty acid trapping device 104 and a spraying device 105 . The vacuum interface 101 is arranged on the top of the first cylinder body 100, and is connected to the vacuuming equipment outside the oil deacidification device, so that the internal system of the entire oil deacidification device can reach a preset vacuum de...

Embodiment 2

[0053] Under the premise of using the deacidification equipment shown in Example 1, taking the treatment of 200 kilograms of decolorized rapeseed oil per hour as an example, the deacidification method using the oil and fat deacidification equipment is further described.

[0054] Utilize this deacidification equipment to carry out the method for deacidification of decolorized rapeseed oil, it comprises the steps:

[0055] Step 1, vacuumize the grease deacidification equipment through the vacuum interface 101, so that the vacuum degree in the grease deacidification equipment is 266.6Pa;

[0056] Step 2, heating the decolorized rapeseed oil to 260°C, and then entering the oil deacidification equipment through the oil inlet pipe 105B;

[0057] Step 3, the spray amount of decolorized rapeseed oil is controlled by spray device 105A, and water vapor is sprayed from bottom to top by steam device 402 at the same time. , the vapor-liquid surface is in contact, and the water vapor is sa...

Embodiment 3

[0060] Under the premise of using the deacidification equipment shown in Example 1, taking the treatment of 500 kg of decolorized soybean oil per hour as an example, the deacidification method using the oil and fat deacidification equipment is further described.

[0061] Utilize this deacidification equipment to carry out the method for deacidification to decolorized soybean oil, it comprises the steps:

[0062] Step 1, vacuumize the grease deacidification device through the vacuum interface 101, so that the vacuum degree in the grease deacidification device is 160Pa;

[0063] Step 2, heating the decolorized soybean oil to 240°C, and then entering the oil deacidification equipment through the oil inlet pipe 105B;

[0064] Step 3, the spray amount of decolorized soybean oil is controlled by spray device 105A, and water vapor is sprayed from bottom to top by steam device 402 simultaneously, and the injection speed of water vapor is 5kg / h, so that water vapor passes through the g...

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Abstract

The invention discloses grease deacidification equipment and a deacidification method. The grease deacidification equipment sequentially comprises a first barrel body, a second barrel body, a third barrel body and a fourth barrel body from top to bottom. The deacidification method carried out by using the equipment takes de-colored grease as a raw material; a temperature range of a deacidification tower of the raw material is 170-260 DEG C; the flow of steam is 3-11kg / h and the vacuum degree is 133.3-266.6Pa. Grease is collected by a liquid collection device and the contact area between the grease and the direct steam is further enlarged; the removing efficiency of free fatty acid is sufficiently improved and an oil path is effectively prevented from being shortened out; the spraying effect is controlled by adjusting a spraying device and the de-colored grease enters a nozzle and is sprayed into the deacidification tower in a micro-droplet shape, so that the distribution of the de-colored oil at a filler section is uniform and a formed film is thin; substances with high steam pressure including ketones, aldehydes and the like, and the fatty acids, hydrocarbons and the like with high boiling points can be effectively removed; the steam use amount is less when the deacidification equipment is used and is only about 25% of the steam use amount of a common plate type deodorization tower.

Description

technical field [0001] The invention relates to an oil deacidification device and a deacidification method, belonging to the technical field of animal and vegetable oil refining and deacidification, and aims to reduce the content of free fatty acids in the oil and save the energy consumption for deacidification. Background technique [0002] The unrefined animal and vegetable oils and fats obtained by pressing, leaching, water preparation or smelting are called crude oils. The main component of crude oil is triglyceride (commonly known as neutral oil), and there are also non-triglyceride components (collectively referred to as "impurities"), such as suspended impurities (silt, blank powder, cake residue, grass clippings) etc.), peptizing impurities (phospholipids, proteins, carbohydrates, etc.), oil-soluble impurities (free fatty acids, pigments, hydrocarbons, waxes, aldehydes, ketones, trace metals and organophosphorus, mercury, polycyclic aromatic hydrocarbons caused by en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
Inventor 陈汉卿
Owner 陈汉卿
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