Patent ID: 11946115
Assignee: STC S.R.L. SCIENCE TECHNOLOGY & CONSULTING
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 8:
9. The process according to claim 4, where the amino compound or the mixture of the amino compounds is activated through flash, comprising:
preparing a solution with concentration between 40 and 60% m/v of the amino compound or of the mixture of the amino compounds, and feeding it into a closed reactor without headspace heated to a temperature between 170 and 190° C. and pressure between 8 and 12 atm.
separately preparing a lead paste suspension with water with a liquid/solid ratio m/m between 0.5 and 2 and feeding it to a reactor;
feeding further fresh amino compound solution, optionally pre-heated, at the same concentration, into the closed reactor, forcing part of the solution already heated to come out of the reactor itself; and
conveying the solution coming out of the closed reactor into the reactor where the lead paste suspension is contained, at a non-controlled temperature and under pressure, causing these conditions the flash of the heated solution of the amino compound or of the mixture of the amino compounds and the desulphurization reaction.