Freeze-condensing vacuum deodorizing method and equipment for fat and oil

A deodorization and oil technology, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of large cooling tower and centrifugal pump configuration, heavy intermediate condenser load, air pollution around the factory area, etc., to achieve easy maintenance and repair, energy saving , the effect of increasing the amount of wastewater

Active Publication Date: 2011-01-12
中机康元粮油装备(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) High cost and high pollution: Due to the large condensation load, steam jet vacuum deodorization technology mostly adopts direct contact condensation method
Odor components with low volatility directly flow into the liquid seal pool along with the condensate, causing air pollution around the factory area
[0005] (3) The system is huge: a large amount of ejected steam injected into the vacuum system increases the load of the intermediate condenser, so that it needs a large amount of circulating cooling water to condense the condensable gas in it and achieve the purpose of reducing the load of the lower vacuum pump. Therefore, the cooling tower And centrifugal pumps are usually configured relatively large, and the entire steam jet vacuum system is extremely large
[0006] The above problems have been plaguing the oil processing industry. With the industry's emphasis on energy consumption, the problems exposed by the existing steam jet vacuum device in the production of oil deodorization need to be solved urgently

Method used

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  • Freeze-condensing vacuum deodorizing method and equipment for fat and oil
  • Freeze-condensing vacuum deodorizing method and equipment for fat and oil
  • Freeze-condensing vacuum deodorizing method and equipment for fat and oil

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: On the 200 tons / day soybean oil refining production line, the technology of the present invention is used to deodorize soybean oil, see figure 1 . The equipment used includes:

[0047] (1) Gas separator unit: including gas separator 01, which has an outlet and an inlet, and the inlet is used to enter grease.

[0048] (2) Heating unit: including oil delivery pump 03, heat exchangers 04, 05, and 06 connected in series; the inlet of oil delivery pump 03 communicates with the outlet of gas separator 01, and the The heating medium channel communicates with the outlet of the oil delivery pump 03, and the heated working medium channel in the heat exchanger 06 is finally heated by the heat transfer oil;

[0049] (3) Deodorization unit: including deodorization tower 07, its top is connected with fatty acid collection tank 08, its bottom is connected with one end of the heating medium channel of heat exchanger 05, and is connected with the heating medium channel, ...

Embodiment 2

[0064] Embodiment 2: On the 400 tons / day rapeseed oil refining production line, the technology of the present invention is used to deodorize rapeseed oil; see figure 1 .

[0065] 1. Preparation, start the vacuum system before production and make preparations. When the absolute pressure of the deodorization tower reaches 50Pa and the temperature of the refrigerant in the dry freezer 11 reaches -40°C, it starts to work;

[0066] 2. Gas analysis and oxygen removal, pump the oil to be deodorized, and enter the gas analyzer 01 for oxygen removal;

[0067] 3. Heating, heat up to about 140°C through plate heat exchangers 04 and 05, then exchange heat with heat transfer oil heat exchanger 06, and enter the deodorization tower 07 with a temperature greater than or equal to 255°C.

[0068] 4. Deodorization, adjust the direct steam consumption of deodorization tower 07, the pressure is 0.1Mpa; the amount of fatty acid spraying is controlled at 20M 3 per hour at a temperature of 60°C fo...

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Abstract

The invention relates to a freeze-condensing vacuum deodorizing method for fat and oil. The method is characterized by comprising the following steps of: 1) preparing; 2) performing gassing to remove oxygen; 3) heating; 4) deodorizing; 5) cooling; and 6) freezing, trapping and melting. Equipment using the method is characterized by comprising the following units of: (1) a gassing unit; (2) a heating unit; (3) a deodorizing unit; (4) a fatty acid trapping unit; (5) a vacuum refrigeration unit; (6) a rear vacuum pump unit; and (7) a defrosting unit. When the method and the equipment are used for performing fat and oil deodorizing production, the method and the equipment have the advantages of greatly reducing heating energy, greatly reducing the using amount of injecting steam and the using amount of cooling water and improving production efficiency. Moreover, sealing treatment is performed on a system and no waste gas is discharged, so the method and the equipment also have the advantages of energy conservation, emission reduction, sanitation and environmental protection.

Description

technical field [0001] The invention relates to the field of edible oil processing, in particular to a dry-cooling vacuum deodorization method and equipment for oil. Background technique [0002] In the production of edible oil, after degumming, deacidification and decolorization, the crude oil also contains a certain amount of fatty acids and trace amounts of aldehydes, ketones, hydrocarbons, oxides of glycerides, soapy smell, clayey smell, etc. These low The boiling point component substances constitute the "off-flavor" component of the oil. Oil deodorization is an important process in refining production. It is based on the large difference in volatility between odor components and triglycerides. Under high temperature and high vacuum conditions, the odor components are removed by means of the principle of steam distillation. . The current oil deodorization vacuum technology adopts steam jet vacuum deodorization technology, which mainly has the following shortcomings: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
Inventor 李子明胡淑珍相海周海军胡群亮曹永政马显军康泽王俊海凌子
Owner 中机康元粮油装备(北京)有限公司
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