2015-10-13
300
1. How many methods of petroleum refining have you known?
2. What is the principle of vacuum distillation?
3. What is super fractionation?
4. What are the processes absorbtion and stripping used for?
5. Are there any differences between two processes absorption and adsorption? What are they?
6. Where is the process of thermal diffusion applied?
7. What are the rotary filters in crystallization used for?
IV. Translate from English into Russian
Steam ejector, extension, pure compounds, fractionating column, removal of constituent, extensive interior surface, molecular sieve, pore openings, octane numbers, thermodynamic efficiency, chill, fluidity.
V. Fill in the missing words: resemble, aviation gasoline, processes, extraction, new development
1. Recent years have brought … in the use of adsorbents of a very selective nature called molecular sieves.
2. The quality of kerosene is improved by … of aromatic compounds.
3. Absorbtion and stripping are … used to obtain valuable light products.
4. By this method, isopentane of over 90 % purity is produced for ….
5. The principle of vacuum distillation … those of fractional distillation.
VI. Make an abstract of the text.
UNIT 8
ALTERATIONS OF MOLECULAR STRUCTURE
I. Read and learn the words
convert – определять
cracking – крекинг (дробление)
inclusion – включение
alter – изменять
reform – реформировать путём дополнительной химической переработки
fixed bed – неподвижный слой
moving bed – подвижный слой
eliminate – удалять
tonnage – тоннаж
by-product – побочный продукт
