Gutter oil degumming and metal salt removing process

Abstract

The invention discloses a gutter oil degumming and metal salt removing process. The process comprises the following steps: colloid components in the illegal cooking oil are gathered and separated through acidifying and hydrating, and then the gutter oil is subjected to electric desalting treatment to separate the water phase in which the metal salt is dissolved from the oil phase and thus metal salt components and water components in the gutter oil are removed; specifically, the gutter oil is subjected to degumming and metal salt removal through a gutter oil degumming and metal salt removal device, wherein the mixing cavity is used for processing, the deionized water, the demulsifier and the acid can be uniformly dispersed in the gutter oil, acidification and hydration are facilitated, liquid drops are polymerized in the electric desalting process and thus the degumming rate is improved and the moisture content in the gutter oil is reduced; meanwhile, due to the integrated arrangement,the occupied area can be reduced, the integration degree of the device is improved, the power output device, the output adjusting device and the mixing cavity are arranged in a scattered mode, the convenience during overhauling is improved, meanwhile, the working efficiency is improved through continuous production, and the modern industrial production requirement is met.

Description

technical field [0001] The invention belongs to the technical field of waste oil recovery, and in particular relates to a waste oil degumming and metal salt removal process. Background technique [0002] Waste oil generally refers to all kinds of low-quality oils that exist in daily life, such as recycled cooking oil, repeatedly used frying oil, etc. The largest source of waste oil is the grease trap in the sewer of large urban hotels, and its main component is still triglycerides , but there are many more pathogenic and carcinogenic toxic substances than real cooking oil, so long-term consumption may cause cancer, which is extremely harmful to the human body. [0003] But also because the main component of waste oil is still triglycerides, although it cannot be used as edible oil, it can be used as industrial raw materials to produce products such as fuel, but due to the high impurity content in waste oil, it is processed Previously, waste oil needs to be treated to remove...

AI Technical Summary

Problems solved by technology

[0003] But also because the main component of waste oil is still triglycerides, although it cannot be used as edible oil, it can be used as industrial raw materials to produce products such as fuel, but due to the high impurity content in waste oil, it is processed Previously, waste oil needs to be treated to remove metal salts, proteins, free fatty acids, mucus and other colloids in waste oil, so as to facilitate subsequent production, but in the prior art, the operations of degumming and demetallization are discontinuous It is not conducive to the improvement of production efficiency, and when adding acid, water and demulsifier for stirring, the stirring time is long, and it is difficult to form uniformly dispersed droplets in the waste oil, thus affecting the performance of hydration, acidification and electric desalination Carry out, in order to solve the above problems, the present invention provides the following technical solutions

Images