Pyrolysis reactor for high temperature conversion

Pyrolytic unit (150) for an elemental analyzer comprising a tube-in-tube assembly device (1), said a tube-in-tube assembly device (1) comprising:

• an inner tube (2) internally defining a reaction duct (3) at least partially filled with a carbon based reaction material (4), wherein the reaction duct (3) has a reaction duct inlet (5) and a reaction duct outlet (6);
• an outer tube (7) acting as a case for said inner tube (2), the inner tube (2) being at least partially arranged inside the outer tube (7) such that a flushing space (8) is formed in the space between the inner (2) and the outer tubes (7), said flushing space (8) being intended for the flowing of a flushing gas;
• means (12, 20, 30) for connecting the outer (7) and the inner (2) tubes at one end of the tube-in-tube assembly device (1), said connecting means (12, 20, 30) comprising tightening means (16, 17, 24, 25) suitable to provide a gas seal between the flushing space (8) and the reaction duct (3), so to separate them one to another.

Elemental analyzer (100) comprising a pyrolytic unit (150) with a tube-in-tube assembly device (1), said a tube-in-tube assembly device (1) comprising:

• an inner tube (2) internally defining a reaction duct (3) at least partially filled with a carbon based reaction material (4), wherein the reaction duct (3) has a reaction duct inlet (5) and a reaction duct outlet (6);
• an outer tube (7) acting as a case for said inner tube (2), the inner tube (2) being at least partially arranged inside the outer tube (7) such that a flushing space (8) is formed in the space between the inner (2) and the outer tubes (7), said flushing space (8) being intended for the flowing of a flushing gas;
• means (12, 20, 30) for connecting the outer (7) and the inner (2) tubes at one end of the tube-in-tube assembly device (1), said connecting means (12, 20, 30) comprising tightening means (16, 17, 24, 25) suitable to provide a gas seal between the flushing space (8) and the reaction duct (3), so to separate them one to another.