Soapstock oil foot acidification reaction system and process

Abstract

The invention belongs to the technical field of grease acidification, and particularly discloses a soapstock oil foot acidification reaction system and process. The Soapstock oil foot acidification reaction system comprises a buffer tank for preheating raw materials, an outlet pipeline of the buffer tank is communicated with an inlet of the heater; the soapstock oil foot heated by the heater is snet into a mixer, the soapstock oil foot is mixed with acetic acid from an acetic acid tank in the mixer, the mixture is sent into a reaction tank for reaction, reactants from the reaction tank are sent into an intermediate tank for cooling, the reactants are sent into a centrifugal separator by the intermediate tank for separating, and then the reactants are divided into two parts, one part is sodium acetate which is fed into a recycling system for further recycling, and the other part is a mixture of fatty acid and oil which is fed into a separation system for further separation. The soapstock oil foot acidification reaction system has the advantages of simple structure and high production efficiency.

Description

technical field [0001] The invention belongs to the technical field of oil acidification, and in particular relates to a soapstock and oily foot acidification reaction system and a process. Background technique [0002] Soap stock is a by-product of the grain and oil processing industry and is produced in the oil refining section. Soap stock has high alkalinity and needs to be diluted with water, otherwise it is not easy to transport. At present, the water content of soapstock produced by major oil plants in the country is 55%-70%. Check the processing information of soapstock, which is rarely mentioned in various textbooks and industry papers and policies on grain and oil by-product processing. The main reason is that the general processing method is the sulfuric acid method, which will cause great pollution. The traditional acidification process, soapstock treatment must add 5-10% of the output with a concentration of 98% concentrated sulfuric acid, heating Acidification...

AI Technical Summary

Problems solved by technology

At present, the water content of soapstock produced by major oil factories in the country is 55%-70%. After checking the processing information of soapstock, it is rarely mentioned in various textbooks, industry papers and policies on grain and oil by-product processing. The main reason is that for a long time, the common processing method is to add sulfuric acid, which will cause great pollution. In the traditional acidification process, soapstock treatment must add 5-10% of the output to the concentrated sulfuric acid with a concentration of 98%. Acidification, based on 55% moisture, the yield rate of this method is about 42% (3% is solid waste), and due to the strong corrosiveness and strong dehydration of concentrated sulfuric acid, the output wastewater is close to black, and the pH value is usually <2 , the COD content of wastewater is 80,000-150,000 mg / L, and the content of sulfate radicals is 90,000-120,000 mg / L. There is still no effective wastewater treatment method, and the solid waste pollution of this process cannot be effectively treated. Some Carbonized solid waste cannot be decomposed, causing serious environmental problems

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