Oil and fat modification method and application thereof

An oil and modification technology, applied in application, climate change adaptation, nitrogen fertilizer, etc., can solve the problems of unfavorable cost control, high price, harsh conditions, etc., and achieve the effect of favorable cost control, less equipment use, and simple method

Active Publication Date: 2019-02-15
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN106518276A discloses the use of modified biogas residue and modified catering waste oil to prepare controlled-release fertilizer coating materials, wherein iodine simple substance is used to catalyze the preparation of modified catering waste oil; Fertilizer-releasing coating material; CN103755866A discloses utilizing waste oil, acrylate hydroxy ester, catalyst, polymerization inhibitor, cross-linking agent to prepare slow (controlled) releasing fertilizer coating material; Chen Di et al. [1] Using waste oil as coating agent A, polyol, silicone, diethylene glycol, xylene and other additive mixtures as coating agent B, with large particle urea as the core, and using rolling fluidized bed coating technology, a slow-release product was prepared. Fat; Mao Xiaoyun et al [2] The modified waste oil is prepared by alcoholysis hog oil method, and the modified waste oil and polyisocyanate prepo

Method used

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  • Oil and fat modification method and application thereof
  • Oil and fat modification method and application thereof
  • Oil and fat modification method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] A method for modifying waste grease includes the following steps:

[0083] Take 80mL soybean acidified oil (acid value is 70mgKOH / g, mass percentage of water is less than 5%) in a scrubber, under the condition of 20~30℃, use air source ozone machine to continuously pass in at a flow rate of 10g / h Ozone for 5 hours to obtain ozonized waste grease (oil modified material), and use sodium thiosulfate solution to absorb residual ozone.

[0084] by figure 1 It can be seen that the acidified soybean oil after ozone modification is at 3009cm -1 The stretching vibration of the alkene hydrogen (=C-H) is significantly reduced, which indicates that the carbon-carbon double bond (C=C) in the modified product is reduced; at 3450cm -1 The hydroxyl peak (-OH) of water is generated at the place, because the instrument used in this experiment is an air source ozone machine, which uses air as raw material to generate ozone by high-voltage discharge, and the oxygen content in the air is 21%, whi...

Embodiment 2～9

[0086] The preparation methods of Examples 2-9 are the same as those of the Examples, but the difference lies in that the ozone introduction time of Examples 2-9 is 1h, 2h, 3h, 4h, 6h, 7h, 8h, 9h, respectively.

[0087] by figure 2 It can be seen that the acid value in the waste grease system increases continuously when the ozone treatment time is increased, and the oxidation value tends to be stable when the reaction time is 7 hours. As a very strong oxidant, ozone is used to treat waste grease. The products contain different oxygen-containing compounds, such as peroxides, ozonides and aldehydes. Among them, peroxides are the most important products, including hydroperoxides, Hydrogen peroxide, polymeric peroxides and other organic peroxides increase the peroxide value. At the same time, aldehydes can be oxidized into acids, and peroxides can also be decomposed into acids, resulting in increased acid values. However, when the reaction time exceeds 7 hours, the generation and de...

Embodiment 10

[0090] A method for modifying waste grease includes the following steps:

[0091] Take 80mL soybean acidified oil (acid value 75mgKOH / g, mass percentage of water is less than 5%) in a scrubber, under the condition of 0~5℃, use an air source ozone machine to continuously pass in at a flow rate of 10g / h Ozone is 4.5h to obtain ozonized waste grease (oil modified material), and sodium thiosulfate solution is used to absorb residual ozone.

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Abstract

The invention discloses an oil and fat modification method and application thereof. Ozone is used for carrying out modification on oil and fat in the method. According to the method, an oil and fat modification material is prepared and obtained through a one-step reaction, the method is simple, efficient and easy to implement; waste oil and fat are used for carrying out modification simultaneouslywithout the use of any solvent or other additives, degradation products are phytonutrients, the using amount of ozone is small, the ozone is a clean renewable resource, the method can be realized atnormal temperature and normal pressure respectively, no expensive equipment is needed to be used, and the equipment is used less, so that the method is beneficial for cost control, cannot cause new environmental pollution, and is applicable for large-scale green and environmental protection production; the oil and fat modification material prepared and obtained by the method is applied to slow release fertilizers or controlled-release fertilizers with the initial nutrient release amount within 24 h being smaller than 15%, and standards of an enveloping material for the slow release fertilizersor controlled-release fertilizers are met.

Description

Technical field [0001] The invention relates to the technical field of material modification, in particular to a method for modifying grease and its application. Background technique [0002] Waste grease is referred to as waste oil, which is waste from the catering industry or food processing industry. If the waste grease is directly discharged into the sewer, into rivers, lakes and ponds, every kilogram of waste grease will cause pollution of 15,000 square meters of water. At present, in my country, although it is technically feasible to prepare biodiesel from waste fats and oils as raw materials, the preparation process is complicated and the cost output is relatively large. Enterprises are basically not interested, which causes a large amount of waste fats to waste. [0003] The application of chemical fertilizers tends to bring about low utilization rate, soil compaction, low permeability, increased surface runoff, loss of a large amount of nutrients, and eutrophication of wat...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCC05C9/00C05G3/90C05G5/30Y02P60/21Y02A40/22
Inventor 阎杰魏静林海琳冯晓萌詹琪琪谭春远
Owner ZHONGKAI UNIV OF AGRI & ENG
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