Method for modifying oil and fat and application of method

Abstract

The invention discloses a method for modifying oil and fat and application of the method. The method for modifying oil and fat comprises the steps that first the oil and fat is modified with ozone, and then a catalyst is added, and re-modification is carried out on the mixture under heating. Any solvent or other additives are not required, and modification is carried out by waste oil and fat, a degradation product is phytonutrients, the ozone consumption is small, and the ozone is a clean renewable resource, and the method can be realized under normal temperature and normal pressure. Expensiveequipment is not required to be used, and less equipment is used, so cost control is facilitated, new environmental pollution is not caused, and the method for modifying oil and fat is suitable for large-scale green environmental protection production; and the oil-fat modified material prepared by the method is applied to slow release fertilizer or control-release fertilizer, and the release of nutrients of the initial stage can be as low as 5.36% within 24 hours.

Description

technical field [0001] The invention relates to the field of material modification, in particular to a method for modifying oil and its application. Background technique [0002] Waste oil, also known as waste oil or hog oil, is waste from the catering industry or food processing industry. Waste oil contains a lot of organic matter. If it is boiled at high temperature for a long time, the organic matter will be partially decomposed into toxic, harmful and carcinogenic substances such as benzene, pyrene, naphthalene, anthracene, nitrate and nitrite, which are more harmful to the human body. ; And when it is discharged into the environment, it will cause water pollution. [0003] At present, waste oil with high acid value is mostly used as raw material for biodiesel. However, these waste oil raw materials usually have a high acid value, and cannot be directly prepared by traditional alkali-catalyzed transesterification to produce biodiesel, and in the process of esterificatio...

AI Technical Summary

Problems solved by technology

Since the 20th century, 1 / 2 of the grain yield per unit area and 1 / 3 of the total grain output have come from the contribution of chemical fertilizers. Continuous large-scale application of chemical fertilizers not only causes waste of resources and increases agricultural production costs, but also brings about eutrophication of water bodies, greenhouse gas emissions, A series of environmental problems such as soil acidification and aggravation of pests and diseases

[0005] CN106518276A discloses the preparation of controlled-release fertilizer coating materials by using modified biogas residue and modified catering waste oil, wherein the modified catering waste oil is prepared by using iodine simple substance for catalysis; Fertilizer-releasing coating material; Mao Xiaoyun et al. [1] The modified waste oil is prepared by alcoholysis hog oil method, and the modified waste oil and polyisocyanate prepolymer are used as liquid binder to react with inorganic minerals to form a film to prepare urea slow-release fertilizer, but the price of polyisocyanate is relatively high. high, which is not conducive to cost control. In addition, although the above research has laid a foundation for the use of waste oil as a coating material for coated fertilizers, the above modification of waste oil needs to further simplify the process, reduce costs, and reduce pollution.

Images