Pre-Heater For An Apparatus For The Production Of Carbon Black

Abstract

A pre-heater for an apparatus for the production of carbon black, is adapted to pre-heat air by heat exchange to a temperature of at least 800° C., comprises an elongated jacket arranged substantially and having a top end and a bottom end, said jacket defining a space, a plurality of tubings arranged inside said space, said tubings having a diameter of 85 to 90 mm, said jacket being provided with an air inlet and an air outlet, for allowing said air to enter and exit said space, a smoke inlet chamber and a smoke collection chamber for allowing smoke to enter and exit said tubing. Said jacket is supported by a suspension means between said top and bottom ends excluding at the top end as such, such that the jacket is allowed to expand upwards above and downwards below said suspension means.

1 : A pre-heater for an apparatus for the production of carbon black, wherein air to be pre-heated by combustion fumes are adapted to increase the temperature of the air by heat exchange to a temperature of at least 800° C., comprising
 an elongated jacket adapted to be arranged substantially vertically and having a top end and a bottom end, said jacket defining a space,   a plurality of tubings arranged inside said space, said tubings having a diameter of 85 to 90 mm,   said jacket being provided with an air inlet and an air outlet, for allowing said air to enter and exit said space,   a smoke inlet chamber and a smoke collection chamber for allowing smoke to enter and exit said tubings,   
     wherein said jacket is supported by a suspension means between said top end and said bottom end, excluding at the top end as such, such that the jacket is allowed to expand upwards above said suspension means and downwards below said suspension means, wherein said suspension means is arranged above the centre of gravity of the pre-heater and/or said suspension means being arranged at the upper half of the elongation of the jacket. 
   
   
       2 : A pre-heater according to  claim 1 , wherein said suspension means is arranged substantially a third of the elongation of the jacket from said top end. 
   
   
       3 : A pre-heater according to  claim 1 , wherein said air inlet is arranged substantially at said top end, said air outlet being arranged substantially at said bottom end, said air being pressurised and conveyed from said air inlet to said air outlet exterior of said tubings. 
   
   
       4 : A pre-heater according to  claim 1 , wherein said smoke inlet chamber is arranged substantially at said bottom end, said smoke collection chamber being arranged substantially at said top end, wherein said tubings are adapted to convey smoke from said smoke inlet chamber to said smoke collection chamber. 
   
   
       5 : A pre-heater according to  claim 1 , wherein an expansion compensator is arranged at said bottom end. 
   
   
       6 : A pre-heater according to  claim 5 , wherein said expansion compensator defines at least a part of said smoke collection chamber. 
   
   
       7 : A pre-heater according to  claim 5 , wherein said expansion compensator comprises a bellows. 
   
   
       8 : A pre-heater according to  claim 7 , wherein said bellows is metallic and is protected by a refractory lining. 
   
   
       9 : A pre-heater according to  claim 7 , wherein said suspension means is adapted to be connected to a support means of a supporting structure in such a way that the suspension means is substantially prevented from performing movements. 
   
   
       10 : A pre-heater according to  claim 1 , wherein a lower portion of the pre-heater is provided with a guiding means adapted for guiding the pre-heater to move in a substantially vertical direction. 
   
   
       11 : A pre-heater according  claim 1 , wherein the length of said tubings is within the range of 12 to 20 meters, respectively. 
   
   
       12 : A pre-heater according to  claim 11 , wherein the length of said tubings range of 12-13 meters, respectively. 
   
   
       13 : A pre-heater according to  claim 11 , wherein the length of said tubings is within the range of 14-16 meters, respectively. 
   
   
       14 : A pre-heater according to  claim 11 , wherein the length of said tubings is within the range of 17-20 meters, respectively. 
   
   
       15 : A pre-heater according to  claim 1 , wherein the outer diameter of the tubings is substantially 89 mm. 
   
   
       16 : A pre-heater according to  claim 1 , wherein the outer diameter of the tubings is 88.9 mm. 
   
   
       17 : An apparatus for the production of carbon black, comprising a burner connected to a fuel or gas source, to a feedstock source and to a combustion reactor, said combustion reactor being connected to said smoke inlet chamber, and a fan, characterized in that wherein the fan is adapted to deliver air to a pre-heater according to  claim 1  any one of the preceding claims, said air outlet being connected to said burner.