Patent ID: 7687029

Claim:
An automatic analyser, by way of combustion, for the determination of nitrogen in organic compounds, in particular proteins present in foods, animal feeds, polymers, fuel, comprising: lines for gaseous fluids (A) sample holders for analysis (B) catalytic combustion reactor (C) reduction reactor (D) water adsorber (E) CO 2 adsorber (F) nitrogen detector (G) logic unit for processing the determined data (H), wherein the device for absorption of carbon dioxide located upstream of the nitrogen detector, is self regenerating and comprises: a distributor valve (F 1 ) able to switch different gas circuits without contaminations and losses from one gas sample to another, a carousel (F 2 ) consisting of a plurality of adsorber elements ( 1008 ) inside which is placed an adsorbent material, each of the aforesaid elements presenting itself in turn for each analysis, wherein the elements ( 1008 ) are U-shaped glass tubes, a furnace (F 3 ) able to regenerate, by means of degassing, each of the aforesaid adsorbers in turn, they being conveyed therein at the end of said analysis.