Deacidification adsorbent of grease and preparation method thereof

An adsorbent and deacidification technology, which is applied in the field of oil processing, can solve problems such as pollution and waste of the environment, and achieve good adsorption effects, low energy consumption and production costs, and good environmental protection performance

Active Publication Date: 2010-05-05
武汉中油宏大科技产业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oil processing by-product skins (shells) are one of the important sources of agricultural waste. At present, the annual output of major oil crops in my country is about 50 million tons, and the processing by-products such as peanut shells and camellia oleifera sh...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 2000g peanut shells, clean and remove impurities, dry at 80°C for 3h, then activate at 300°C for 5h, cool and crush to 30 mesh. Weigh 100g of activated substance in a specific container, add potassium hydroxide solution with a weight concentration of 15%, the amount added is 12 times the volume of activated substance, heat to 50°C, stir thoroughly for 5h, then filter and separate, and dry the solid at 105°C 1h, to obtain the oil deacidification adsorbent product I. Weigh 500g of degummed rapeseed oil with an acid value of 1.95mgKOH / g in a specific container, add deacidification adsorbent I with 2% of the oil weight, heat up to 60°C, stir at 500 rpm for 50min, and centrifuge to obtain Deacidified rapeseed oil has an acid value of 0.20 mgKOH / g and a neutral oil yield of 97.7%.

Embodiment 2

[0032] Weigh 1000g camellia oleifera shell, clean and remove impurities, dry at 95°C for 2h, then activate at 400°C for 4h, cool and crush to 40 mesh. Weigh 100g of the activated substance into a specific container, add a sodium hydroxide solution with a weight concentration of 20%, the amount added is 8 times the volume of the activated substance, heat to 40°C, fully stir for 4h, filter and separate, and dry the solid at 105°C 1h, to obtain the oil deacidification adsorbent product II. Weigh 500g of degummed tea seed oil with an acid value of 2.33mgKOH / g in a specific container, add deacidification adsorbent II with an oil weight of 2.0%, heat up to 50°C, stir at 500 rpm for 60min, and centrifuge to separate the tea seeds Oil, the acid value of tea seed oil was determined to be 0.18mgKOH / g, and the yield of neutral oil was 97.3%.

Embodiment 3

[0034] Weigh 2000g of sunflower seed shells, clean and remove impurities, dry at 105°C for 1h, then activate at 350°C for 6h, cool and crush to 60 mesh to obtain the activated product. Weigh 100g of the activated substance in a specific container, add potassium carbonate solution with a weight concentration of 25%, the amount added is 15 times the volume of the activated substance, fully stir at room temperature for 5 hours, then filter and separate, dry the solid substance at 105°C for 1 hour to obtain oil Deacidification Sorbent Product III. Weigh 500g of degummed linseed oil with an acid value of 2.86mgKOH / g in a specific container, add deacidification adsorbent III of 1% by weight of the oil, heat up to 70°C, stir at 500 rpm for 30min, and centrifuge to separate the linseed oil, the acid value of linseed oil was determined to be 0.29mgKOH / g, and the yield of neutral oil was 96.3%.

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Abstract

The invention relates to a deacidification adsorbent of grease and a preparation method thereof. The deacidification adsorbent comprises oil crop seed husks containing an alkaline compound, wherein the content of the alkaline compound contained in the oil crop seed husks is 2-35% by weight, and the oil crop seed husks are one or several of oil-tea camellia husks, peanut hulls, sunflower seed husks, castor husks and walnut husks. The deacidification adsorbent is prepared by activation, pulverization, adsorption and drying treatment. The invention can realize the high-efficiency comprehensive utilization of wastes and also has the advantages of better performance of environmental protection, lower cost and the like. The deacidification adsorbent of the grease has the characteristics of simple preparation process, good adsorption effect and the like and can ensure favorable adsorption capacity and deacidification effect of the adsorbent by controlling the conditions of the activation temperature, the solution concentration and the like. The invention has strong applicability, can be widely suitable for vegetable oil with different varieties and is also suitable for vegetable oil products with low acid value and high acid value. The invention is applied instead of the prior traditional alkali refining method and has no need of any equipment investment.

Description

technical field [0001] The invention relates to an adsorbent for deacidifying oil and a preparation method thereof, in particular to an adsorbent capable of reducing the acid value of vegetable oil and a preparation method thereof, belonging to the technical field of oil processing. Background technique [0002] Usually, crude vegetable oil needs to be refined to reach the grade of edible refined oil. The main purpose of deacidification is to remove free fatty acids in crude oil, which is an important process in the oil refining process and a key process that affects oil refining consumption and product quality. There are many methods for vegetable oil deacidification, mainly including chemical deacidification, physical deacidification and mixed oil deacidification. Chemical deacidification, also known as alkali refining, is to add lye to the degummed oil, and the lye and free fatty acids undergo a neutralization reaction to form soapstock, which is then removed by centrifu...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C11B3/10
Inventor 黄凤洪刘昌盛杨湄黄庆德李文林邓乾春钮琰星郭萍梅杨金娥程晓英
Owner 武汉中油宏大科技产业股份有限公司
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