Method for producing carbonates
First 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.
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Accused Products
Abstract
In an embodiment, a method of producing a carbonate comprises 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; and reacting a monohydroxy compound with the phosgene to produce the carbonate; wherein the phosgene reactor comprises a tube, a shell, and a space located between the tube and the shell; wherein the tube comprises one or more of a mini-tube section and a second tube section; a first concentric tube concentrically located in the shell; a twisted tube; an internal scaffold; and an external scaffold.
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Citations
20 Claims
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1. A method of producing a carbonate, comprising:
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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; andreacting a monohydroxy compound with the phosgene to produce the carbonate. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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5. A method of producing a carbonate, comprising:
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reacting carbon monoxide and chlorine in a phosgene reactor in the presence of a catalyst to produce a first product comprising phosgene and 0 to 10 ppm by volume of carbon tetrachloride 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;
a first concentric tube concentrically located in the shell;
a twisted tube;
an internal scaffold; and
an external scaffold;wherein if the tube comprises the mini-tube section and the second tube section then the reacting comprises reacting the carbon monoxide and chlorine in the mini-tube section to produce a first tube composition, wherein the mini-tube has an average inner diameter of 0.1 to 10 millimeters; and
reacting at least a portion of the first tube composition in the second tube section to produce the first product, wherein the second tube section comprises an increased diameter tube with an average diameter greater than the mini-tube; andreacting a monohydroxy compound with the phosgene to produce the carbonate. - View Dependent Claims (6, 18)
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19. A method of producing a carbonate, comprising:
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reacting carbon monoxide and chlorine in a phosgene reactor in the presence of a catalyst to produce a first product comprising phosgene and 0 to 10 ppm by volume of carbon tetrachloride based on the total volume of phosgene;
wherein the catalyst comprises an active metal comprising one or more transition metals of Groups 3 to 10 of the Periodic Table, boron, aluminum, silicon, or a combination comprising one or more of the foregoing;wherein the peak temperature in the phosgene reactor is less than 800°
C.;
wherein the phosgene reactor has a heat transfer area per unit volume of 100 to 10,000 m2/m3;
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 at least one 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; andreacting a monohydroxy compound with the phosgene to produce the carbonate. - View Dependent Claims (20)
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Specification