А) Опишите трубчатую печь

21 22 23 24 25 26 27

Б) Опишите процессы, происходящие в ректификационной колонне.

16. Запомните следующие слова:

petroleum – нефть

petrol – бензин

to obtain – получать

mixture – смесь

to occur – встречаться

hydrocarbons – углеводороды

to assume – принимать

state – состояние

application – применение

solid – твердый

heat – тепло

slight – небольшой

to cause – заставлять, вызывать

further – дальнейший

boiling point – температура кипения

to convert – превращать

vapors – пары

transmutable – способный к превращению

Прочтите текст и ответьте на вопросы:

Petroleum is the name of the mineral that comes from under the ground and from which petrol is obtained.

Petroleum is a mixture of naturally occurring hydrocarbons which may assume either the solid, liquid or gaseous state. These three phases of petroleum are transmutable one into the other by the application of changes in temperatures and pressure. Some of the constituents of petroleum are solid at ordinary earth temperatures. But the application of heat to produce a slight rise in temperature will cause them to assume liquid form and further heating to the boiling point will convert them into gases and vapors.

1. What is the name of the mineral that comes from under the ground?

2. What is petrol obtained from?

3. What states may petroleum assume?

4. Are these three phases of petroleum transmutable one into the other?

5. What will the application of heat produce?

Прочтите слова и запомните их:

to vary – изменяться nitrogen – азот

deposit – месторождение sulphur – сера

saturated – насыщенный high-molecular – высокомолекулярный

content – содержание compound – соединение

aromatic – ароматический resin – смола

apart from – кроме asphaltic – асфальтовый