Solid agent for eliminating soot and in particular tars, and method for making same and uses thereof

Abstract

Solid agent for destroying soot and tars, which includes, aggregated and as base constituents: (a) an agent which is active with respect to soot and tars, (b) plant waste and (c) a binding agent, characterized in that the agent which is active with respect to soot and tars is present in a proportion of greater than 40% (dry weight).

1 . Solid agent for destroying soot and tars, which includes, aggregated and as base constituents: (a) an agent which is active with respect to soot and tars, (b) plant waste and (c) a binding agent, characterized in that the agent which is active with respect to soot and tars is present in a proportion of greater than 40% (dry weight).  
     
     
         2 . Agent according to  claim 1 , including, as base constituents, 41 to 90% by weight of agent which is active with respect to soot and tars, 5 to 50% of plant waste and 5 to 50% of binder, the proportions of these constituents being chosen so that the total represents 100% of the base constituents (dry weight).  
     
     
         3 . Agent according to  claim 1  or  2 , including, as base constituents, 45 to 75% of agent which is active with respect to soot and tars, 10 to 30% of plant waste and 10 to 30% of binder, the total representing 100% of the base constituents (dry weight).  
     
     
         4 . Agent according to one of  claims 1  to  3 , in which the binder is an organic binder derived from carbon.  
     
     
         5 . Agent according to one of  claims 1  to  3 , in which the binder is paraffin wax or stearic acid.  
     
     
         6 . Agent according to one of  claims 1  to  5 , in which the plant waste is wood waste.  
     
     
         7 . Agent according to one of  claims 1  to  6 , in which the active agent is composed of one or more alkali metal and/or alkaline earth metal and/or ammonium and/or amine compounds.  
     
     
         8 . Agent according to  claim 7 , in which the active agent is a salt for which at least one of the constituent ions is relatively volatile on contact with hot embers.  
     
     
         9 . Agent according to  claim 8 , in which the active agent is chosen from sodium chloride, potassium chloride, calcium chloride, magnesium chloride, sodium acetate, potassium acetate, calcium acetate, magnesium acetate, sodium carbonate, potassium carbonate, calcium carbonate, magnesium carbonate, sodium nitrate, potassium nitrate, calcium nitrate, magnesium nitrate, ammonium chloride, ammonium phosphate, ammonium sulphate and/or ammonium nitrate.  
     
     
         10 . Process for the manufacture of an agent according to one of  claims 1  to  9 , which consists in aggregating together the three base constituents, optionally with secondary constituents, in the solid state or by melting the binder and subsequent cooling or by use of active agent and of solid plant waste, the binder being dissolved in a solvent which is subsequently removed.  
     
     
         11 . Use of an agent according to one of  claims 1  to  9 , which consists in placing it on hot embers, in particular embers under slow combustion conditions, and in leaving the said agent to slowly disintegrate on contact with the hot embers.