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天然气是以甲烷为主的烃类气体混合物，其组成中，除甲烷我，常含有不同数量的C2－C8等低碳烷烃以及二氧化碳，氮气，硫化物等非烃类。天然气既可清洁能源，又可作为优质化工原料。为了提高资源综合利用程度，提高经济效益，除重视甲烷的合理利用外，积极拓展天然气中其他低碳烷烃的综合利用，不仅可增加企业经济效益，而且还会产生显著的社会效益。平湖油气田是我国东海第一个正式投入开发的油气田，为了综合利用从其天然气中回收的凝胶，对该凝胶的组成特性，利用方案，产品开发等进行了课题研究，并调查了上海地区市场需求，进而制定燃料－溶剂的利用方案：以生产环保型气雾剂推进剂，塑料发泡剂以及特种溶剂等为主，取得了初步成果。

Comprehensive Utilization of the Condensed Liquid Recovered from Natural Gas

Natural gas is a hydrocarbon gas mixture being mainly composed of methane,in which,besides methane,a certain amout of low carbon (C 2-C 8) paraffine hydrocarbons and some non-hydrocarbon gases as carbon dioxide,nitrogen and sulfide,etc.,are commonly found.Natural gas is not noly a clean energy source but also a high-quality chemical raw material.In order to raise the comprehensive utilization rate of natural gas resources and the economic returns,it is necessary to open up the comprehensive utilization of the other low carbon paraffine hydrocarbons in natural gas,besides paying more attention to making rationally use of methane,which can not only increase enterprise's economic returns but also produce obvious social effect.Pinghu oil and gas field is the first field of formally putting into development in the East China Sea.For the sake of comperehensively utilizing the condensed liquid recovered from the natural gas produced from this field,a research on the composition behavior,utilization plan and product development of the condensed liquid was carried out,the market demands at Shanghai region were investigated and an utilization plan of fuel-solvent type was drawn out by the author.A primal result has been achieved through mainly producing environment-protenting aerosol propellant,plastic foamer and special solvents,etc.