Sulfuric acid ester gas pipeline drag reduction agents 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: 2009-11-11
PIPECHINA SOUTH CHINA CO
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AI Technical Summary

Problems solved by technology

When the gas flows through the pipe, the roughness will cause friction and then gene

Method used

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Embodiment Construction

[0023] 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 50ml of imidazole into a 500ml three-necked bottle, then add 200ml of xylene, put it into a water bath filled with ice-water mixture, pass through nitrogen protection, put it into a thermometer, and measure it to ensure that its temperature does not exceed 30°C. Install the instrument, put the rotor in, start the magnetic stirrer, measure 100ml of dibutyl sulfate with a graduated cylinder and add it to the addition funnel, and add the dibutyl sulfate drop by drop to the imidazole added to xylene. Slowly add the medicine into the three-necked bottle by controlling the addition funnel. After reacting for 2 hours, the reaction product was placed in a separatory funnel, and after standing still for 1 hour, the xylene layer was separated from the organic layer, and the pro...

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Abstract

The invention discloses sulfuric acid ester gas pipeline drag reduction agents for drag reduction of long-distance pipelines of gas, particularly natural gas and a preparation method thereof. The drag reduction agents are formed by sulfuric acid esters, aromatic compounds and heterocyclic compounds according to the molar ratio of 1:5:1-1.5:10:1. The preparation method comprises the steps of: 1) adding a heterocyclic compound and an aromatic compound with certain proportion into a reactor, adding nitrogen for protection, and stirring for fixed time period at low temperature, and then adding sulfuric acid ester; 2) reacting for certain time to ensure that a formed liquid is changed into opacity and layering from initial lucidity and transparency; 3) using extraction layering to separate a residual liquid and a generated sulfuric acid ester drag reduction agent; and 4) distilling a residual liquid of an organic solvent under reduced pressure to obtain a product in vacuum. The drag reduction agents have obvious effect on the drag reduction of gas pipelines, have the advantages of direct raw material sources, simple operation, mild reaction conditions, relatively simple process and low requirement on equipment, and are easy to realize mass industrialized production.

Description

technical field [0001] The invention relates to a sulfuric acid ester gas pipeline drag reducer for drag reduction of long-distance gas pipelines, 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, so its proportion in 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, even in different seasons, which requires the gas transmission network to have certain adjustment capabilities, especially to increase the transmission volume rapidly 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...

Claims

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Application Information

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IPC IPC(8): C09K3/00F17D1/02
Inventor 李国平张志恒常维纯鲍旭晨刘兵李春漫
Owner PIPECHINA SOUTH CHINA CO
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