含天然气介质管道中水合物抑制技术研究环境工程专业论文.docxVIP

哈尔滨工业大学工程硕士学位论文 哈尔滨工业大学工程硕士学位论文 - - II - Abstract Natural gas is picked from air pocket, in the mouth of a well, disposal equipment and gathering pipe net. The low molecular weight hydrocarbon, sulfureted hydrogen, carbon dioxide and so on will from hydrate under the definite temperature and pressure, which jams equipment and transportation gas pipeline, so that it will lead to stop production accident. Because it usually happens both in domestic and abroad, the inhibiting measure must be adopted in the definite condition. The domestic and abroad widely use the thermodynamic hydrate inhibitor to inhibit hydrate forming. The thermodynamic hydrate inhibitor widely used in the domestic land oil field is methanol, however the thermodynamic hydrate inhibitor widely used in the domestic maritime oil field is glycol. In allusion to the land oil field, by simulating test research, present the exact temperature of the inborn hydrate in natural gas gathering transportation pipe net, so that saved the heat energy cost; Present the exact adding quantity of methanol in outside transportation pipe, so that saved the methanol consume; Present the hydrate inhibitor of glycol instead of methanol and the best adding quantity. In allusion to the maritime oil field, by simulating test research, present substitutable glycol the less dosage of dynamics hydrate inhibitor, so that lightened the emergence water disposal difficulty. By these simulating rest research, provide the technique guarantee of pipeline normal production and environment protect. The task researched and established the simulation test method of hydrate forming. By simulating and researching hydrate forming to the mix transportation pipeline and natural gas transportation pipeline, it presented the condition curve of hydrate forming, and by the curve we can look up directly the hydrate forming condition in locale pipe transportation project situation, so that can decide if we will adopt the hydrate inhibit measure. Th