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A kind of composite natural gas drag reducer and preparation method thereof

A natural gas and composite technology, applied in the direction of mechanical equipment, gas/liquid distribution and storage, pipeline systems, etc., can solve the problems of reduced service life of natural gas pipelines, increased safety hazards, corrosion and aging of natural gas pipelines, and achieves obvious energy-saving effects. The effect of low equipment requirements and simple process

Active Publication Date: 2016-03-02
CHINA NAT OFFSHORE OIL CORP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, natural gas pipelines also have serious corrosion and aging problems, especially gathering pipelines and gas field pipeline networks
Reduce the service life of natural gas pipelines and increase safety hazards

Method used

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  • A kind of composite natural gas drag reducer and preparation method thereof
  • A kind of composite natural gas drag reducer and preparation method thereof
  • A kind of composite natural gas drag reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1. Preparation of composite natural gas drag reducer

[0029] 16.6g (0.1mol) of phthalic acid and 20.6g (0.2mol) of diethylenetriamine were added to a 250ml three-necked flask, and under the protection of inert gas, the reaction temperature was controlled to be 190°C by stirring, and the reaction was carried out for 4h. When almost no water was produced (about 3.6 g of water was produced at this time), the reaction was stopped, and when the temperature dropped below 100 °C after cooling, 58.4 g (0.2 mol) of weighed oleic acid was added to the 250 ml reactor. Under the protection of inert gas, the temperature of stirring was controlled at 190 °C, and the reaction was continued for 4 h. When almost no water was produced (about 3.6 g of water was produced at this time), the reaction was stopped, and the crude product was poured out when the cooling temperature was below 100°C. Dissolving the crude product in alcohol can be used as a drag reducer for composite natu...

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Abstract

The invention claims a composite gas drag reducer and a preparation method thereof. The method comprises the following step of: reacting organic dibasic acid or organic binary acid anhydride, organic amine and monocarboxylic acid with a long carbon chain, thereby obtaining the composite gas drag reducer, wherein the specific steps the reaction are as follows: (1) reacting the organic dibasic acid or organic binary acid anhydride and the organic amine in an inert atmosphere, (2) adding the monocarboxylic acid with the long carbon chain to the reaction system of the finished reaction in the step (1), thereby obtaining the composite gas drag reducer via reaction. The composite gas drag reducer is obvious in drag reduction of the pipeline gas and energy conservation, and has the advantages of cheap and easily available raw material, simplicity in operation, mild reaction conditions, simple processes, low equipment requirements and easiness for industrial production.

Description

technical field [0001] The invention relates to a composite natural gas drag reducing agent and a preparation method thereof. Background technique [0002] Due to environmental concerns and the pressure on the world's carbon emissions, countries are vigorously promoting the production and efficient use of natural gas to partially replace coal and oil. As a kind of clean energy, natural gas has an increasing status in the world energy pattern. With the continuous growth of natural gas energy demand and the need for peak regulation, the world's natural gas transmission technology is facing greater challenges. In addition to building larger-scale natural gas pipelines and pipeline networks, improving the transmission capacity and adjustment capacity of natural gas pipelines can also be achieved by reducing the transmission resistance of existing pipelines. As a new technology for drag reduction and transmission increase, the natural gas drag reducing agent drag reduction tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/48C08G69/28F17D1/17
Inventor 李清平叶天旭徐吉展姚海元罗小明吕宇玲何利民牛凤科朱海山庞维新程兵
Owner CHINA NAT OFFSHORE OIL CORP
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