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Triazine type natural gas drag reducer, synthesis method and use thereof

A drag reducer, natural gas technology, applied in gas/liquid distribution and storage, pipeline systems, organic chemistry, etc., can solve the problems of less polar chain ends, poor drag reduction effect, poor adsorption, etc. Low equipment requirements, overcoming the effect of poor adsorption

Active Publication Date: 2018-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the disadvantages of existing natural gas drag reducers, such as poor adsorption, few polar chain ends, and poor drag reduction effect, the present invention proposes a triazine-type natural gas drag reducer and its synthesis method

Method used

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  • Triazine type natural gas drag reducer, synthesis method and use thereof
  • Triazine type natural gas drag reducer, synthesis method and use thereof
  • Triazine type natural gas drag reducer, synthesis method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Add 110.4g of cyanuric chloride and 600mL of acetone into a 3000mL four-necked bottle equipped with a reflux condenser, a thermometer, a stirrer, and a constant pressure dropping funnel, cool the four-necked bottle to -15°C, and slowly drop in 77.6 g di-n-butylamine and 10wt% sodium hydroxide solution 240.0g, control the temperature of the system not to exceed 0°C, control the pH value of the solution at 5-7, and react at -5~10°C for 2h, the pH value of the solution is close to neutral when the reaction ends. Add 18.0g of ethylenediamine and 240.0g of 10wt% sodium hydroxide solution dropwise at 20°C, control the dropping rate so that the pH of the solution is controlled at 6-9, and react at 40°C for 5h, the pH of the solution is close to neutral when the reaction ends. Add 52.2g of morpholine and 240.0g of 10wt% sodium hydroxide solution at 50°C, control the rate of addition so that the pH of the solution is controlled at 7-10, and react at 90°C for 10 hours, and react ...

Embodiment 2

[0049] Add 110.4g of cyanuric chloride and 600mL of acetone into a 3000mL four-necked bottle equipped with a reflux condenser, a thermometer, an agitator, and a constant pressure dropping funnel, cool the four-necked bottle to -15°C, and slowly drop in 111.2 g di-n-hexylamine and 10w.t.% sodium hydroxide solution 240.0g, control the temperature of the system not to exceed 0°C, control the pH value of the solution at 5-7, and react at -5~20°C for 2h, the pH value of the solution is close to The reaction ends at neutral. Add 26.4g of butanediamine and 240.0g of 10w.t.% sodium hydroxide solution dropwise at 30°C, control the dropping rate so that the pH of the solution is controlled at 6-9, and react at 60°C for 5h, the pH of the solution The reaction ends when it is close to neutral. Add 52.2g of morpholine and 240.0g of 10w.t.% sodium hydroxide solution at 60°C, control the rate of addition, so that the pH of the solution is controlled at 7-10, and react at 90°C for 10h, the p...

Embodiment 3

[0054] Add 110.4g of cyanuric chloride and 600mL of acetone into a 3000mL four-necked bottle equipped with a reflux condenser, a thermometer, an agitator, and a constant pressure dropping funnel, cool the four-necked bottle to -15°C, and slowly drop in 60.7 g diisopropylamine and 10w.t.% sodium hydroxide solution 240.0g, the temperature of the control system does not exceed 0°C, the pH value of the solution is controlled at 5-7, and react at -5~10°C for 2h, the pH value of the solution is close to The reaction ends at neutral. Add 25.8g of piperazine and 240.0g of 10w.t.% sodium hydroxide solution dropwise at 20°C, control the drop rate so that the pH of the solution is controlled at 6-9, and react at 50°C for 7h, the pH of the solution is close to The reaction ends at neutral. Add 52.2g of morpholine and 240.0g of 10w.t.% sodium hydroxide solution at 50°C, control the rate of addition, so that the pH value of the solution is controlled at 7-10, and react at 90°C for 10h, and...

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Abstract

The invention discloses a triazine type natural gas drag reducer. The molecular structure of the natural gas drag reducer is shown as the specification. The drag reducer is synthesized by the method of: dissolving cyanuric chloride in a solvent, adding secondary amine and inorganic base dropwise to generate a cyanuric chloride substitute 1; raising the temperature, adding diamine and inorganic base dropwise to obtain a cyanuric chloride substitute 2; adding morpholine and inorganic base into the reaction solution, and raising the reaction temperature; and at the end of reaction, removing the solvent, conducting washing and drying, thus obtaining the product. The drag reducer provided by the invention has multiple polar ends and multiple non-polar ends, and has good adsorption properties and excellent drag reduction and transmission increasing effects. The method provided by the invention has the advantages of simple synthesis process, mild conditions, short reaction time and low equipment requirement, and is easy to realize large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of organic chemistry, and in particular relates to a triazine-type natural gas drag reducer and its synthesis method and application. Background technique [0002] In recent years, my country's demand for natural gas has gradually increased, and some pipelines have reached full-load operation, and some areas have further increased pipeline capacity due to seasonal peak regulation requirements. For in-service pipelines, pressurization operation is the most direct and effective method to increase pipeline throughput, but the cost of pressurization transformation is high, the cycle is long, and the implementation is difficult. [0003] During pipeline transportation of natural gas, the roughness of the inner wall of the pipeline will generate frictional resistance, which in turn will generate gas vortices, resulting in pressure drop and energy loss along the way. Therefore, in order to increase the gas transmission volu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/70C23F11/14F17D1/02
CPCC07D251/70C23F11/149F17D1/02
Inventor 赵巍王晓霖李遵照陈建磊
Owner CHINA PETROLEUM & CHEM CORP
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