<p>A process for the production of sodium cyanide crystals comprising; (a) contacting impure hydrogen cyanide and sodium hydroxide in a reactor with mixing for a maximum contact time of about 5 seconds; (b) feeding the resulting mixture to a continuous evaporative crystallizer to produce a slurry of sodium cyanide crystals; (c) passing the slurry of sodium cyanide crystals from the crystallizer over a hot surface to precipitate onto the surface and remove sodium carbonate, and passing said slurry back to the crystallizer; and (d) separating the sodium cyanide crystals from the slurry.</p>
申请公布号
WO2010135733(A1)
申请公布日期
2010.11.25
申请号
WO2010US35935
申请日期
2010.05.24
申请人
E. I. DU PONT DE NEMOURS AND COMPANY;ALLISON, JAMES DAVID;BASHAM, BRENT, E.;GRISE, STEVEN, LAMAR
发明人
ALLISON, JAMES DAVID;BASHAM, BRENT, E.;GRISE, STEVEN, LAMAR