Direct liquefaction techniques on lignite coal: A review
نویسندگان
چکیده
منابع مشابه
Reaction Engineering of Direct Coal Liquefaction
Direct coal liquefaction has been studied and practiced since the 1930s. It was used in Germany during World War II to produce synthetic fuels when there was no oil allowed into the country. Since then, it has been studied in the United States and many different technologies have been investigated. Since the US is rich in coal resources, this is one way to be energy independent. Most of the dev...
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Abstract—The world crude oil demand is projected to rise to 108.5 million bbl/d by the year 2035. With reserves estimated at 869 billion tonnes worldwide, coal remains an abundant resource. The aim of this work was to produce a high value hydrocarbon liquid product using a Direct Coal Liquefaction (DCL) process at, relatively mild operating conditions. Via hydrogenation, the temperature-staged ...
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The production of distillate fuels and chemicals from coal has never been economical in a free market economy. The principal factors which contribute to the high cost of coal-derived liquids are the large amounts of hydrogen which must be added to remove heteroatoms and to convert material containing about 5 wt% hydrogen to products with between 12 to 14 wt% hydrogen, the severe reaction condit...
متن کاملKinetics of Coal Liquefaction
Information on t h e r a t e s o f coa l d i s s o l u t i o n which i s needed i n t h e design o f r e a c t o r s i n a c o a l l i q u e f a c t i o n p l a n t has been very l i m i t e d ; t h e r e f o r e , mcthods a r e needed by which d i s s o l u t i o n r a t e d a t a can be ex t r apo la t ed t o o t h e r o p e r a t i o n cond i t ions . In t h i s s e c t i o n , t h e r a t e...
متن کاملReaction Engineering of Coal Liquefaction
INTRODUCTION A Brief History of Coal Liquefaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Process Overview: What Goes In and What Goes Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Need to Motivate Remaining Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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ژورنال
عنوان ژورنال: Chinese Journal of Catalysis
سال: 2020
ISSN: 1872-2067
DOI: 10.1016/s1872-2067(19)63492-3