The invention discloses a
demulsifier rich in various functional groups, and a preparation method thereof. The
demulsifier comprises the following components in parts by weight: 15 to 40 parts of
hydrogen-containing
silicon oil, 10 to 40 parts of allyl polyether, 10 to 35 parts of
acrylic acid, 15 to 30 parts of acrylic ester, 0.5 to 4 parts of a catalyst, 0.5 to 6 parts of an initiator, 1 to 2 parts of a
chain transfer agent, 1 to 2 parts of a chain terminating agent, 3 to 5 parts of a surfactant, 1 to 2 parts of an
accelerant and 10 to 25 parts of deionized water. The
demulsifier is
single component, HLB can be adjusted by the synthetic raw materials, high amphipathy is achieved,
ether bond,
ester bond and
carboxylate radical exist in the molecular structure of the prepared demulsifier at the same time,
silicon various functional groups are introduced, and the demulsifier can act on
crude oil emulsion well. The obtained demulsifier has the characteristics of small use amount, good
dehydration effect, low demulsification temperature, clean dehydrated
water quality, wide use range and the like.