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天然气制合成油得到的柴油燃料基本不含硫和芳烃 ,费—托法合成技术的进步已使天然气制合成油(GTL)的生产成本可与 18～ 2 2美元 /桶的原油价格相竞争 ,因而GTL已成为天然气 ,尤其是偏远地区天然气高效利用的一个有前景的途径。GTL技术由合成气生产、费—托合成和产品精制三部分组成。GTL的工艺方案有埃克森公司AGC - 2 1工艺、壳牌公司SMDS工艺、萨索尔公司Synthol工艺、合成油公司工艺等。GTL技术在合成气生产和费托合成方面还出现了一些新的进展。 2 1世纪将迎来GTL装置新的发展期 ,在未来 15年内 ,预计GTL装置生产能力将增加 (45 0 0～ 6 75 0 )× 10 4 t/a。 2 0 0 5年前将有 7套GTL装置投运 ,总能力 880× 10 4 t/a。

Introduction to the Gas-to-liquids

??The diesel oil obtained from the gas to liquids (GTL) does not contain sulphur and aromatic hydrocarbon in the main and the progress in the synthetic technology of Fisher Tropsch process has made the manufacturing cost of the GTL be able to compete against the crude oil price of 18??22 ??/bbl,therefore GTL have opened up a vast range of prospects for high effectively utilizing natural gas,especially the one at remote districts.The technology of GTL is composed of three parts,i.e.the synthetic gas production,the synthesis by Fisher Tropsch process and the refinement of products.There are several technological plans for GTL,such as the AGC-21 technology of Exxon Co.,the SMDS technology of Shell Co.,the synthol technology of Sasol Co.and the technology of Synthetic Oil Co.,etc..Some new progress has been yet found in the synthetic gas production and the synthesis by Fisher Tropsch process subordinate to the technology of GTL and a new developing stage of GTL devices will be coming on in the 21st century.In the future 15 years,it is predicted that the production capacity of GTL devices will increase to 45??67.5×10⁶t/a and seven sets of GTL devices with total production capacity of 8.8×10⁶t/a will be put into operation before 2005.