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Imidazole saline gas transmission pipeline drag reduction agent and preparation method thereof

A technology for gas transmission pipelines and drag reducing agents, applied in pipeline systems, chemical instruments and methods, mechanical equipment, etc., can solve problems such as pipeline pressure loss and energy loss, achieve low equipment requirements, realize large-scale industrial production, Simple process effect

Active Publication Date: 2012-05-30
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the gas flows through the pipe, the roughness will cause friction and then generate a gas vortex, resulting in energy loss, resulting in a pressure loss in the pipe

Method used

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Examples

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Embodiment Construction

[0033] Embodiment. The specific embodiment of the present invention is described with this example and the present invention is described further. This example is a test method in a laboratory. Specifically, add 250ml of 1,3-dimethyl-2-ethylimidazole and 350ml of n-heptane bromide into a 500ml three-necked flask, and under the condition of stirring in an inert atmosphere, first control the reaction temperature at 60°C and stabilize for 2h Finally, the reaction temperature was slowly raised to 80°C, and after reflux for 48 hours, the reaction temperature continued to be raised slowly, and the temperature was controlled at 90°C, and the reflux was continued for 48 hours, and the heating was stopped. The reaction mixture was cooled for 2 h, the upper layer had a yellowish liquid, and the lower layer was white crystals. Under an inert atmosphere, the upper yellow liquid was poured out, and the white crystals were crushed for suction filtration. Put the white crystals into an ins...

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PUM

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Abstract

The invention discloses an imidazole saline gas transmission pipeline drag reduction agent and a preparation method thereof. The imidazole saline gas transmission pipeline drag reduction agent is prepared from imidazoles compounds, fluo phosphate and halogenated hydrocarbon according to the mol ratio of 1:1:1-1:2:1.5. The preparation method comprises the following steps: adding the imidazoles compounds and the halogenated hydrocarbon into a reaction vessel, stirring the mixture in the inert atmosphere, and controlling the temperature and reflux for reaction; after the reaction is finished, stopping heating, and cooling the reaction product to ensure that the upper layer is yellowish liquid and the lower layer is a white crystal; in the inert atmosphere, pouring out the yellowish liquid, and crushing the white crystal for suction filtration; putting the white crystal into a heat insulating purifier, adding a solvent into the heat insulating purifier, and in the inert atmosphere, re-crystallizing the mixture for 2-3 times to obtain a white crystal; adding an organic solvent, the white crystal, and the fluo phosphate into the reaction vessel, stirring the mixture in the inert atmosphere, and controlling the temperature for reaction; after the reaction is finished, carrying out suction filtration on the liquid rapidly to obtain a crude product containing the solvent; and steaming asmall amount of the organic solvent from the crude product, and then evaporating the organic solvent radically to obtain a product.

Description

technical field [0001] The invention relates to an imidazolium salt gas pipeline drag reducer for drag reduction of gas, especially natural gas pipelines, and a preparation method thereof. It relates to the technical field of organic macromolecular compounds, their preparation and pipeline system. Background technique [0002] Natural gas is the least polluting and cleanest energy source. Therefore, the proportion of primary energy has increased rapidly, and the natural gas pipeline network has developed rapidly. The demand for natural gas varies greatly in various regions at home and abroad, and even in different seasons. This requires the gas transmission pipeline network to have a certain adjustment capability, especially to rapidly increase the transmission volume under the condition of ensuring safety. Therefore, it is urgent to develop a natural gas drag reducer similar to oil drag reducer, so as to make a breakthrough in the drag reduction technology of natural gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00F17D1/02
Inventor 张志恒艾慕阳李国平鲍旭晨常维纯高艳清
Owner PIPECHINA SOUTH CHINA CO
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