Imidazoline derivatives as well as synthesis method and application thereof

Abstract

The invention belongs to the technical field of derivative synthesis, and discloses imidazoline derivatives, a synthesis method and application thereof, and synthesis of an imidazoline intermediate. By selecting an appropriate organic acid initiator, different R1 alkyl structures are determined; the basic structural characteristics of the five-membered ring imidazoline are determined by selectingpolyethylene polyamine; the synthesis of the imidazoline derivatives comprises selecting a group with a certain structure to form a hydrophilic group R2. According to the synthesis method of imidazoline derivatives with different structures, especially novel monocyclic imidazoline and polycyclic imidazoline molecules, 5-8 molecular structures of the novel imidazoline derivatives are expected to becompleted, and innovation of cyclization, modification, coupling and other synthesis methods of the imidazoline derivative is achieved. The understanding of the corrosion inhibition mechanism is further deepened through the understanding of synergistic effects of corrosion inhibitor monomers and the synergistic rule. According to the molecular structures, a synergistic effect is deeply researchedfrom interface adsorption kinetics, a synergistic rule is discovered, and compounding technology innovation is realized.

Description

technical field [0001] The invention belongs to the technical field of derivative synthesis, and relates to an imidazoline derivative, a synthesis method and an application thereof. Background technique [0002] At present, my country's oil and gas field development process treats more than 1 billion cubic meters of oilfield sewage every year. Some of the water produced by these oil wells will be re-injected into the formation after sewage treatment. Oilfield sewage contains mineral salts, dissolved gas (CO 2 , H 2 S, O 2 etc.), microorganisms (iron bacteria, sulfate reducing bacteria, saprophytic bacteria, etc.) Oilfield sewage is generally purified and reinjected through equipment such as oil skimmers, filters, booster pumps, and water injection pumps. During these processes, pipelines and equipment are often corroded, seriously affecting the normal production of oil and gas, and causing huge economic losses. In the current sewage treatment process, a certain amount o...

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Problems solved by technology

[0005] At present, the main problems of commercial corrosion inhibitors for oilfield sewage treatment: 1) High corrosion rate

At present, most of the corrosion inhibitors actually used in existing oil fields are difficult to meet this requirement.

2) It is difficult to meet the requirements of different oil fields

3) The price of corrosion inhibitor is higher

In order to meet the requirements of corrosion rate and corrosion inhibition rate, the concentration of some corrosion inhibitors is increased, which greatly increases the cost of oilfield sewage treatment.

4) Some corrosion inhibitors contain substances harmful to the environment, which are likely to cause environmental pollution problems and do not meet the sustainable development concept of green environmental protection

[0009] 2. In order to ensure the high efficiency of corrosion inhibitors under certain conditions, they often have specificity, which makes it difficult to be compatible with many different environmental conditions

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