Abstract: Disclosed are a method of solidifying a low-boiling-point hydrocarbon, wherein the low-boiling-point hydrocarbon (including hydrocarbons which are gaseous at ordinary temperature) is brought into contact with a metal salt of an aliphatic carboxylic acid, and if necessary a high-boiling-point hydrocarbon, suspended in water, to form a solid aggregate substance, a method of handling the low-boiling-point hydrocarbon, wherein the solid aggregate substance is stored or transported, and a method of regenerating the low-boiling-point hydrocarbon, wherein the solid aggregate substance is decomposed by opening or heating, to obtain the low-boiling-point hydrocarbon. According to the methods, a wide variety of gaseous and highly volatile liquid hydrocarbons can be safely and easily solidified without using harmful reagent, and during storage, transportation, etc., the gaseous hydrocarbons and highly volatile liquids can be handled as a solid material.

Abstract: In the method of scarfing surface defects of to-be-scarfed metal material as said material is moving relative to the scarfing machine with scarfing nozzle, the improvement, which comprises a step of supplying oxygen into the consumable electrode pipe so provided as to be directed to a scarfing point on the surface of said to-be-scarfed metal material, for jetting the oxygen from the tip of said electrode pipe, a step of feeding said electrode pipe until its tip contacts said metal material, a step of heating rapidly the contacting portion respectively of said electrode pipe and of said metal material with electrical energy and heat of oxidation so that the temperature of such portion may rise to scarfing start temperature, and a step of initiating the scarfing process instantaneously from such temperature rising portion with the oxygen jetted to said scarfing nozzle.