Patent ID: 9695106
Date: 2017-07-04
CPC Classifications: B01J,C01B,C07C,F28F

Claim:
1. A method of producing a carbonate, comprising: reacting carbon monoxide and chlorine in a phosgene reactor in the presence of a catalyst to produce a first product comprising phosgene; wherein carbon tetrachloride is present in the first product in an amount of 0 to 10 ppm by volume, based on the total volume of phosgene; wherein the phosgene reactor is capable of producing greater than or equal to 2,000 kilograms of the first product per hour; wherein the phosgene reactor comprises a tube, a shell, and a space located between the tube and the shell; and wherein the catalyst is disposed in the tube and a cooling medium is located in the space, or the catalyst is disposed in the space and a cooling medium is located in the tube; wherein the tube comprises one or more of a mini-tube section and a second tube section, wherein the second tube section has an increased diameter relative to the mini-tube section; a first concentric tube concentrically located in the shell; a twisted tube; an internal scaffold; and an external scaffold; and reacting a monohydroxy compound with the phosgene to produce the carbonate.