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Composite gas drag reducer and preparation method thereof

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

Active Publication Date: 2013-12-18
CHINA NAT OFFSHORE OIL CORP +2
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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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  • Composite gas drag reducer and preparation method thereof
  • Composite gas drag reducer and preparation method thereof
  • Composite gas drag reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, preparation composite type natural gas drag reducer

[0029] Add 16.6g (0.1mol) of phthalic acid and 20.6g (0.2mol) of diethylenetriamine into a 250ml three-necked flask, under the protection of inert gas, stir and control the reaction temperature to 190°C, and react for 4h. When almost no water is produced (about 3.6g of water is produced at this time), the reaction is stopped, and when the temperature drops below 100°C, add 58.4g (0.2mol) of oleic acid that has been weighed into a 250ml reactor. Under the protection of an inert gas, the stirring temperature was controlled at 190° C., and the reaction was continued for 4 h. When almost no water is produced (about 3.6g of water is produced at this time), the reaction is stopped, and the crude product is poured out when the cooling temperature is lower than 100°C. Dissolving the crude product in alcohol can be used as a composite natural gas pipeline drag reducer.

[0030] A small amount of the composite ...

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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 reducer and a preparation method thereof. Background technique [0002] Due to environmental considerations and the pressure of 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 clean energy source, natural gas is playing an increasingly important role in the world's energy landscape. With the increasing demand for natural gas energy and the need for peak regulation, the world's natural gas transmission technology is facing greater challenges. Improving the transmission capacity and adjustment capacity of natural gas pipelines can be achieved by reducing the transmission resistance of existing pipelines in addition to building larger-scale natural gas pipelines and pipeline networks. As a new technology for reducing drag and increasing transmission, the drag reduction technology of natural gas dr...

Claims

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Application Information

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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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