Ether blends via reactive distillation
A method for forming a blend of ethers from a blend of alcohols includes a step of reacting a hydrocarbon-containing gas with an oxygen-containing gas to form first product blend. The first product blend includes a blend of partially oxygenated compounds. The blend of partially oxygenated compounds is provided to a reactive distillation station where it is converted a second product blend. The second product blend typically includes a mixture of ethers. An apparatus implementing the method is also provided.
1. A method for forming a blend of ethers from a blend of partially oxygenated compounds, the method comprising:
a) reacting a hydrocarbon-containing gas with an oxygen-containing gas to form first product blend in a reactor, the first product blend including a blend of partially oxygenated compounds that includes alcohols and aldehydes wherein the hydrocarbon-containing gas is reacted with the oxygen-containing gas at pressures from about 450 to 1250 psia and temperatures from about 350 to 450° C.;
b) providing the blend of partially oxygenated compounds to a reactive distillation station through one or more conduits; and
c) converting the blend of partially oxygenated compounds to a second product blend at the reactive distillation station, the second product blend including a mixture of ethers and a component selected from the group consisting of C 2-10 esters, methylene glycol ethers, and combinations thereof.
2. The method of claim 1 wherein the hydrocarbon-containing gas includes C 1-10 alkanes.
3. The method of claim 1 wherein the hydrocarbon-containing gas includes an alkane selected from the group consisting of methane, ethane, propanes, butanes, pentanes and combinations thereof.
4. The method of claim 1 wherein the hydrocarbon-containing gas includes an alkane selected from the group consisting of methane, ethane, and combinations thereof.
5. The method of claim 1 wherein the first product blend includes C 1-10 alcohols.
6. The method of claim 5 wherein the first product blend includes an alcohol selected from the group consisting of methanol, ethanol, propanols, butanols, pentanols and combinations thereof.
7. The method of claim 1 wherein the first product blend includes an alcohol selected from the group consisting of methanol, ethanol, and combinations thereof.
8. The method of claim 1 wherein the second product blend includes a mixture of C 2-20 alkyl ethers.
9. The method of claim 8 wherein the second product blend includes an ether selected from the group consisting of dimethyl ether, diethyl ether, methylethyl ether, dipropyl ether, methyl propyl ether, ethyl propyl ether, dipropyl ether, methyl butyl ether, propylbutyl ether, dibutylyether, and combinations thereof.
10. The method of claim 8 wherein the second product blend includes an ether selected from the group consisting of dimethyl ether, diethyl ether, methylethyl ether, and combinations thereof.
11. The method of claim 9 wherein the second product blend includes a component selected from the group consisting of C 2-10 esters, methylene glycol ethers, and combinations thereof.
12. The method of claim 9 wherein the second product blend includes formaldehyde.
13. The method of claim 12 further comprising a step of separating the formaldehyde from the second product blend.
14. The method of claim 1 wherein the oxygen-containing gas comprises oxygen.
15. The method of claim 1 wherein the reactive distillation station includes a catalyst packed column having a catalyst that converts alcohols to ethers.
16. The method of claim 15 wherein the catalyst is selected from the group consisting of aluminosilicate catalysts, copper modified alumina catalyst, and combinations thereof.