Environment-friendly-type polluted oil processing agent

Abstract

The invention relates to an environment-friendly-type polluted oil processing agent, which is prepared by a surfactant, a flocculating agent and a solvent through uniformly mixing in a mechanical blending mode, the surfactant is a cationic surfactant and / or an anionic surfactant and / or a non-ionic surface active agent and / or an ampholytic surfactant, the flocculating agent is one of polyferric sulfate, polymeric aluminum ferric sulfate, polymeric aluminium and aluminum sulfate, and the solvent is a mixture of one or more of methyl alcohol, ethyl alcohol, ethylene glycol, propylene glycol, propanetriol or ethylene glycol butyl ether. According to the invention, a plurality of surfactants are employed for compounding, so that electrostatic neutralization effect can be generated on the surface of oil droplets, the stability of an emulsion is worse, so that the purposes of demulsification and oil-water separation can be reached, the flocculating agent has the effect for removing small impurity and mud, as well as demulsificating, so that oil removal efficiency can be increased. According to the invention, dewatering efficiency of the polluted oil processing agent is high, the crude oil can be effectively separated from the polluted oil, the pollution of the polluted oil to the environment can be reduced, and the administration cost is saved.

Description

technical field [0001] The invention belongs to the technical field of preparation of chemical products, and relates to an environment-friendly waste oil treatment agent suitable for waste oil treatment. Background technique [0002] In the process of oil exploration and production, a large amount of dirty oil will be produced, including oil well pipe leakage and ground crude oil, sewage settling tank, oil removal tank, flotation tank recovery oil, free water remover and electric dehydrator to deal with abnormal situations And discharge into the dirty oil etc. of accident tank, if these dirty oils are directly discharged in the surrounding environment, can waste energy and pollute the environment. The composition of oilfield waste oil is very complex, its internal water content is usually higher than 10%, and it contains high colloid, asphaltene and other heavy components and solid impurities, as well as a large amount of demulsifier and flocculant added in the production pr...

AI Technical Summary

Problems solved by technology

The centrifuge method treats a large amount of sewage oil and is suitable for high water content sewage oil, but the operation of the equipment is unstable and it is easy to shut down; the sludge treated by the hydrothermal washing method is neutral, which is convenient for biochemical final treatment and is conducive to industrialization. Clean water needs to be continuously replenished, which consumes a lot of water; although the microbial treatment method is environmentally friendly and easy to implement, it takes a long time to process and the effect is slow

In China, at present, many oilfields usually do not directly process dirty oil on site, but sell oily dirty oil to dirty oil recycling companies in the form of waste, not only paying a large amount of dirty oil treatment fees and transportation costs to recycling companies every year, It also causes a large amount of crude oil to be unable to be recovered for secondary use