Method for preparing sucrose fatty acid ester through waste plant oil and animal fat

A technology of sucrose fatty acid esters, waste animals and plants, applied in the direction of preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve the problems of complex steps, waste of resources, high cost of raw materials, etc.

Inactive Publication Date: 2012-12-19
连云港力润粮油贸易有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it solves the problems of high cost of raw materials and serious waste of resources in the preparation of sucrose fatty acid esters in the prior art, and solves the problem of complicated steps and low conversion rate of using waste animal and vegetable oils to prepare sucrose fatty acid esters

Method used

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  • Method for preparing sucrose fatty acid ester through waste plant oil and animal fat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Pretreatment of waste animal fats:

[0074] Take 200g of waste animal and vegetable oils (hogwash oil 1, dark yellow in color, acid value 20.8mgKOH / g oil) into a 500ml four-neck flask, add 10g of phosphoric acid with a concentration of 85% into it, heat at 75°C, stir rapidly for 30min, and then Remove the reaction liquid, remove the colloid by high-speed centrifugation, and obtain the degummed oil of the supernatant liquid; add 20 g of sodium hydroxide solution with a mass concentration of 15% to it, heat up to 90 ° C and stir for 1 h, first separate and remove the water phase, and then Centrifuge to remove saponified matter; finally add 3% clay and 0.5% activated carbon, stir continuously at 80°C for 1 hour, and vacuumize under reduced pressure; finally filter to remove activated carbon and clay, and dry to obtain purified oil with light yellow color and acid value 1.09mgKOH / g oil, counted as refined oil 1.

Embodiment 2

[0076] Pretreatment of waste animal fats:

[0077] Take 200g of waste animal and vegetable oils (hogwash oil 2, dark yellow in color, acid value 25.4mgKOH / g oil) into a 500ml four-neck flask, add 10g of phosphoric acid with a concentration of 85% into it, heat at 75°C, stir rapidly for 30min, and then Remove the reaction solution, remove the colloid by high-speed centrifugation, and obtain the supernatant degummed oil; add 30 g of sodium hydroxide solution with a mass concentration of 15% to it, raise the temperature to 90 ° C and stir for 1 hour, first partition the water phase, and then centrifuge Separate and remove the saponified matter; finally add 3% clay and 0.5% activated carbon, stir continuously at 80°C for 1 hour, and vacuumize under reduced pressure; finally filter out activated carbon and clay, and dry to obtain purified oil, light yellow in color and acid value 0.89 mgKOH / g oil, counted as refined oil2.

Embodiment 3

[0079] Pretreatment of waste animal fats:

[0080] Take 200g of waste animal and vegetable oil (gutter oil 1, brown in color, acid value 45.8mgKOH / g oil) into a 500ml four-neck flask, add 10g of phosphoric acid with a concentration of 85% into it, heat at 75°C, stir rapidly for 30min, and then remove The reaction solution was removed by high-speed centrifugation to remove the colloid, and the degummed oil of the supernatant liquid was obtained; 40 g of sodium hydroxide solution with a mass concentration of 15% was added to it, and the temperature was raised to 90 ° C and stirred for 1 hour. The water phase was first partitioned, and then centrifuged. Remove saponified matter; finally add 3% clay and 1% activated carbon, stir continuously at 80°C for 1 hour, and vacuumize under reduced pressure; finally filter out activated carbon and clay, and dry to obtain purified oil with light yellow color and acid value 1.21mgKOH / g oil, calculated as refined oil 3.

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Abstract

The invention relates to a method for preparing sucrose fatty acid ester through waste plant oil and animal fat, which comprises the following step: 1) preheating the waste plant oil and animal fat; 2) preparing fatty acid ester; and 3) preparing sucrose fatty acid ester. According to the invention, the employed waste plant oil and animal fat is taken as a raw material, the sucrose ester is prepared, the cost is reduced, the hazard caused by the waste plant oil and animal fat on the environment can be reduced, the harm of the waste plant oil and animal fat back to dinner table can be reduced. The reaction condition is mild, and the prepared product has good color.

Description

technical field [0001] The invention relates to a method for preparing sucrose fatty acid esters from waste animal and vegetable oils, and further relates to a method for obtaining fatty acid methyl esters through transesterification after the waste animal and vegetable oils are degummed, deacidified, decolorized, and deodorized. , the method for further producing sucrose fatty acid ester. Background technique [0002] The recovered oil in post-catering waste is referred to as hogwash oil. Under normal circumstances, catering wastewater is directly discharged into the sewer, causing great pollution to the environment. Simultaneously, due to the sex taste of some unscrupulous traders, hogwash oil also exists the phenomenon that flows into dining table again, has had a strong impact on the health of the eater. Therefore, finding a new utilization route of hogwash oil will be a subject of great significance. Xie Guojian adopted the acid-catalyzed process route of "passing me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H13/06C07H1/00
Inventor 李为民陆朝阳李建防李志鹏张湘辉
Owner 连云港力润粮油贸易有限公司
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