| 摘要 |
In a refining process for heavy quality oil (16, 17) by means of pyrolysis, the yield of distillation is increased by causing heavy feedstocks (1) to be added with oxide or hydroxide of alkaline earth metal and to be subjected to a thermal reaction i a presence of vapour at the temperature in the range of from 350 DEG C to 550 DEG C under the pressure in the range of from 1 to 20/cm<2>. |
