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Development and Evaluation of Drag Reducing Agents for Natural Gas Pipeline

Author: WangMingHao
Tutor: YeTianXu
School: China University of Petroleum
Course: Chemical Engineering and Technology
Keywords: Natural gas DRA Piped Mannich bases Imidazoline
CLC: TE869
Type: Master's thesis
Year: 2010
Downloads: 105
Quote: 2
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Abstract


Energy consumption structure in the contemporary world , the natural gas energy to occupy an increasingly important position in the natural gas industry went into a high-speed development stage , the development of the natural gas industry pipeline transportation technology put forward higher requirements . Improve the transmission capacity of the gas pipeline on the one hand by the construction of the new pipeline , improve the natural gas pipeline network , on the other hand by pipeline drag reduction . Natural gas pipeline DRA technology concern in recent years as a relatively economic means within the drag reduction . This article is designed according to the natural gas pipeline DRA Drag Reduction Mechanism four drag-reducing development potential of chemicals : acetophenone - formaldehyde - di-n- butylamine Mannich bases , acetophenone - formaldehyde - octadecylamine Man Kronig alkali , stearic imidazoline, oleic imidazoline. Mannich base synthesis investigation acetophenone - formaldehyde - di-n- butylamine Mannich base synthesis process optimization of process parameters : pH value of 2 , the reaction temperature is 95 ℃; stearic imidazoline synthesis two process parameters : the inspection process optimization imidazoline synthesis vacuum the cyclization temperature 170 ° C vacuum cyclization 3h . Synthesis of these four alternatives DRA optimize the process parameters , the infrared spectra (IR) verified the chemical structure of the four products . Electron microscopy analysis of the four options DRA solution soaked steel , can be seen to the steel roughness significantly lower , good film-forming properties , has the potential drag reduction performance ; film-forming stability of two samples the visits also showed a good effect ; through electrochemical polarization curve analysis , it can be seen that the four alternatives DRA has good the adsorption film-forming ability , the strength of the order of the film-forming ability : acetophenone - formaldehyde - the Mannich base octadecylamine gt; stearic imidazoline gt; acetophenone - formaldehyde - di-n- butylamine Mannich bases gt; oleic imidazoline . ?

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas storage and transportation > Mine oil and gas gathering and processing > Oil and gas gathering and transportation chemicals
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