Cation-type hydrophobic association polymer and its preparation method and application

Abstract

The invention discloses a cation type hydrophobic association polymer and a preparation method and application thereof. Through adopting acrylamide, dimethyl diallyl ammonium chloride and butyl acrylate as synthesis monomer, the cation type hydrophobic association polymer is made through a common free radical micelle polymerization method and making use of a composite initiation system and additive auxiliary agent urea. Moreover, the cation type hydrophobic association polymer, which has the characteristics of high molecular weight, excellent product stability, strong adsorption bridging capacity of colloid matter, good flocculation effect, wide application scope, less generated sludge and hydrophobic association function, etc., can be widely used in the treatment of oil field oily wastewater.

Description

technical field The invention relates to a hydrophobic association polymer and its preparation method and application, in particular to a cationic hydrophobic association polymer and its preparation method and application, and belongs to the technical field of environment and chemistry. Background technique At present, most of my country's oil fields are in the tertiary oil recovery stage of applying polymer flooding, and the polymers used are mainly high molecular weight partially hydrolyzed polyacrylamide. In the tertiary oil recovery process, due to the use of a large amount of polymers and other oilfield chemical additives, the produced fluid contains a large number of chemical substances, which increases the difficulty of the oil-water separation of the produced fluid and the treatment of oily sewage, resulting in the formation of treated sewage containing A certain amount of petroleum, chemical substances and mechanical impurities, etc., the water quality is poor. If ...

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Problems solved by technology

For example, in the process of oil-water separation, this floc will carry a large amount of water into the oil phase, affecting the effect of electric dehydration of crude oil; in the process of sewage purification, it will cause frequent blockage of the filter, increase the cost of sewage treatment and the difficulty of on-site construction, etc.

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