Patent ID: 8202485

Claim:
Process for providing a flow of particulate matter to a reactor, in which a mixing tank is supplied batchwise with particulate matter and diluent and a flow of said particulate matter and said diluent is provided continuously from said mixing tank to said reactor, comprising: intermittently adding said particulate matter and said diluent to the mixing tank; whilst continuously withdrawing a slurry of said particulate matter in said diluent from the mixing tank for introduction into the reactor; wherein prior to each addition of said particulate matter and said diluent to the mixing tank, the concentration of said particulate matter in said diluent already in the mixing tank is measured or calculated, and the amount of said particulate matter and said diluent subsequently added is measured so as to achieve the same concentration at the end of the addition as that measured or calculated prior to the addition; and wherein said particulate matter is a catalyst.