Patent ID: 7374731

Claim:
A reaction apparatus for producing vapor-grown carbon fibers (VGCF), comprising: a vertical tubular reactor, comprising: an outer tube; a first inner tube located in said outer tube, wherein one end of said first inner tube is aligned with one end of said outer tube, and there are a plurality of first holes distributed on the tube wall of said first inner tube, and said one end of said first inner tube has a first gas inlet used for introducing raw material gas; a second inner tube located below said first inner tube in said outer tube, wherein there are a plurality of second holes distributed on the tube wall of an upper portion of said second inner tube; and a thermal-conductive material filled in a filler portion extending from the area between said first inner tube and said outer tube to the area between said second inner tube and said outer tube, wherein said outer tube has a second gas inlet located on below said thermal-conductive material for introducing first carrier gas; and a heater installed externally to said outer tube for heating a portion of said outer tube.