TH58713B - Chlorosilane reactive distillation - Google Patents

Abstract

DC60 (12/11/57) Chlorosilane, such as dimethyl dichlorosilane, is hydrolyzed in the first super-aziotropic hydrochloric acid A distillation column to produce. Cyclosilosens, Chlorosilosens and Gas Hydrogen chloride Cyclosilosens and Chlorosilosens are washed and separated according to The evaporation capacity of these substances in the second sub-aziotropic hydrochloric acid B distillation column to produce significant chloride-free volatile cyclosilene currents; and flow Significantly chloride-free non-volatile silos Process is a process that has Efficiency for chloride is significant. Chlorosilane, such as dimethyl dichlorosilane, is hydrolyzed in the first super-aziotropic hydrochloric acid A distillation column to produce cyclosylosane, chlorosylane. Zen and gas Hydrogen chloride Cyclosilosens and Chlorosilosens are washed and separated according to The evaporation capacity of these compounds in the second sub-aziotropic hydrochloric acid B distillation column to produce a volatile cyclosilicate stream independent of critical chloride and flow Non-volatile silosens that are free from critical chlorides. Process is a process that has Significant efficiency for chloride

Claims (7)

Disclaimer (all) which will not appear on the advertisement page: Amendment 4 August 2017 Page 3 Di-n-Propyl dichlorosilane, Di -i-polyphydchlorosilane, Di-n-butyl dichlorosilane, di -i-butyl dichlorosilane, di-t-butyl dichlorosilane, n-butyl methyl di Chlorosilane, Octadecylmethyl Dichlorosilane, Diphenyl Dichlorosilane, Phenylmethyl Dichlorosilane, Dicyclohexyl Dichlorosilane, Methyl Di Chlorosilane, and Trimethyl Chlorosilane 1 4. Method according to claim 13, where one or more chlorosilane is fed to the column. One is a liquid or a vapor 1 5. Method according to claim 14, where one or more chlorosilane is fed to the column The first would include dimethyl dichlorosilane 1 6. Method according to claim 1, where significant chloride-free cyclosylosane conducts Out of the top part of the second column, there are more than 95 percent of the cyclosilosens with less than 6 silicon atoms. 1 7. Method according to claim 1, where the quantity of the first column and the first column. The second will be absolutely shaken Mechanical or as a result of turbulence produced by contact of vapor / liquid inside the first column. And a second column ---------- 1. Method of chlorosilane hydrolysis consists of (i) feeding one or more chlorosilane to the super distillation column. - Azio First tropic hydrochloric acid and cyclo, siloxane and chloroides removal. The linear silosane exits from the first column (ii) feeding the critical chloride-free water to the sub-aziotropic distillation column. Second hydrochloric acid (iii) removal of HCI gas from the top of the first column (iv) removal of saturated acquyte HCI from the lower part of the first column. And circulating it back to the upper part of the first column (v), feeding a straight line of cyclosilosen and chlorosylosane from the first column. Go to the second column (vi), removing the critical chloride-free cyclosilicate from the section. The top of the second column and the silosane are free of non-critical chlorides. Evaporated from the bottom part of the second column and (vii) the removal of the acacia HCI from the bottom part of the second column and Circulate it back to the first column. 2. Method of claim 1, which also consists of separation of the volatile cyclosensen. And non-volatile and linear chlorosylosane in the second column at the temperature and pressure at 3. The method of claim 2, which also consists of controlling the molecular weight of these substances, is below the individual boiling points of these substances. Linear cyclosylosane and chlorosylosane in the first column or in the second column. Is a function of the time persistence of these substances in the first column or the second column, or as Function of HCI concentration in the first column or in the second column 4. Method according to claim 2, which also includes control of the containment of Cyclosilosens in the first column or in the second column are a function of the time of persistence. These substances are in the first column or in the second column and are functions of temperature and pressure. In the first column or in the second column 5. Clause 1 claim method, which will also be included by making the HCI the accretion at Removed from the bottom part of the second column, partial vaporization, partial reverse circulation The first liquid of the hCI is heated to the first column and the second vapor recirculation to the lower part of the second column 6. Method according to claim 1. Where water is free from the critical chloride that is fed to the column. Two quantities are in the range from less than the relative mass required for the quantity of Chlorosilane fed to the first column until the required relative mass. For the amount of chlorosilane fed to the first column 7. Method according to claim 6, where water is free from the critical chloride fed to the column where Two are entered in quantities less than the relative mass quantity required for the quantity of Chlorosilane entered to the first column 8. Method according to claim 6, where water is free from the critical chloride that is fed to that column. Two are entered in quantities greater than the relative mass quantity required for the quantity of Chlorosilane fed to column one 9. Clause 1 method, which also consists of feeding 1 to 36 percent of the accumulated HCI from the external source to the first column. And hCI recovery from the source Externally, the HCI gas from the top part of the first column 1 0. Clause 1 claim method, whereby the accumulated HCI is removed from the lower part of the The second column is the current with less than the aciotropic concentration of the acuase 1 HCI. 1. Procedure according to Clause 10, whereby the accredited HCI is removed from the bottom section of The second column is the current with 0 to 50 percent of the aziotropic concentration of the active HCI 1. 2. Procedure according to Clause 10, whereby the accredited HCI is removed from the bottom section of The second column is a current with 0 to 25 percent of the aziotropic concentration of the active HCI 1. 3. Method according to claim 1, where one or more chlorosilane is fed to the column that One would choose from a group containing dimethyl dichlorosilane, diethyl dichlorosilane, di-n-propyl dichlorosilane, di-i-propyl dichlorosilane, di -n-butyl dichloro-silane, di -i-butyl dichlorosilane, di-t-butyl dichlorosilane, n-butyl methyl di Chlor-Rosylane, Octadecylmethyl Dichlorosilane, Diphenyl Dichlorosilane, Phenylmethyl Di-Chlorosilane, Dicyclohexyl dichlorosilane, Methyl dichlorosilane, and trimethyl-chlorosylane 1 4. Method according to claim 13, where one or more chlorosilane is fed to the column that One is liquid or vapor 1 5. Method according to claim 14, where one or more chlorosilane is fed to the column that One will include dimethyl dichlorosilane 1. 6.Method according to claim 1, where the cyclosilosens are free from critical chlorides removed. From the top of the second column, there are cyclosilosens with less than 6 silicon atoms, more than 95 percent. 7. Method according to claim 1, where the containers of the first and second column are shaken. Mechanical or as a result of turbulence resulting from exposure to internal vapor / liquid The first and second columns