초록 ▼

It is possible to increase the amount of nitrogen generated per unit of adsorbent, raise the nitrogen yield, and reduce the manufacturing cost for nitrogen by using, as an adsorbent for the separation of nitrogen, molecular sieving carbon obtained by successively conducting a halogenation treatment,

It is possible to increase the amount of nitrogen generated per unit of adsorbent, raise the nitrogen yield, and reduce the manufacturing cost for nitrogen by using, as an adsorbent for the separation of nitrogen, molecular sieving carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and a pore adjustment treatment on a carbonized charcoal. By using activated carbon obtained by successively conducting a halogenation treatment, a dehalogenation treatment, and an activation treatment on a carbonized charcoal, as an adsorbent for carbon dioxide and methane, it is possible to improve the amount adsorbed.

대표청구항 ▼

[ We claim:] [1.] A manufacturing method for a carbon adsorbent comprisinga halogenation treatment step in which a halogenated carbonized charcoal is obtained by bringing carbonized charcoal into contact with halogen gas;a dehalogenation treatment step in which a porous carbonaceous material is obta

[ We claim:] [1.] A manufacturing method for a carbon adsorbent comprisinga halogenation treatment step in which a halogenated carbonized charcoal is obtained by bringing carbonized charcoal into contact with halogen gas;a dehalogenation treatment step in which a porous carbonaceous material is obtained by conducting a heat treatment at a temperature of 600-1300.degree. C. under vacuum evacuation or in an inert gas and a heat treatment at a temperature of 600-850.degree. C. in a hydrogen compound gas or in a hydrogen compound gas which has been diluted with an inert gas, on said halogenated carbonized charcoal to eliminate a part or all of said halogen; anda pore adjustment treatment step in which said porous carbonaceous material is brought into contact with thermally decomposable hydrocarbon.