FIELD: petrochemical processes.
SUBSTANCE: invention is intended for use in chemical and petrochemical industries to produce lower olefins by pyrolysis of hydrocarbon stock in pipe furnaces. First of all, preliminary thermal pyrolysis of gasoline fraction is performed at 760-805°C and gasoline fraction-to-steam weight ratio 1:(0.3-0.9) during 10 to 120 h and then at 805-825°C during 12 to 240 h. Subsequent pyrolysis of ethane fraction is effected at 780-850°C and ethane fraction-to-steam weight ratio 1:(0.3-0.9).
EFFECT: prolonged operation cycle of furnace in the process of thermal pyrolysis of ethane fraction with high yields of unsaturated hydrocarbons.
1 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING LOWER OLEFINS C-C FROM RAW LIGHT HYDROCARBON MATERIAL | 2007 |
|
RU2348678C1 |
| METHOD OF PRODUCTION OF LOWER OLEFINS | 2006 |
|
RU2315800C2 |
| METHOD TO DERIVE LOW MOLECULAR WEIGHT OLEFINS FROM LIGHT HYDROCARBON MATERIAL | 2007 |
|
RU2326929C1 |
| METHOD OF PRODUCTION OF UNSATURATED HYDROCARBONS | 2004 |
|
RU2265640C1 |
| METHOD OF PRODUCING ETHYLENE FROM HYDROCARBON MATERIAL | 2014 |
|
RU2548002C1 |
| METHOD OF PRODUCTION OF LOWER OLEFINS | 2004 |
|
RU2265641C1 |
| METHOD AND APPARATUS FOR THERMAL PROCESSING OF HYDROCARBON RAW MATERIAL | 1997 |
|
RU2110554C1 |
| PETROCHEMICAL CLUSTER | 2014 |
|
RU2550690C1 |
| METHOD OF PRODUCING AROMATIC HYDROCARBONS AND LOWER OLEFINS | 2008 |
|
RU2370482C1 |
| METHOD FOR COMBINED PYROLYSIS OF ETHANE RAW MATERIAL AND LIQUEFIED HYDROCARBONS | 2020 |
|
RU2730458C1 |
