Integrated process for synthesizing alcohols, ethers, aldehydes, and olefins from alkanes

Abstract

Alcohols, ethers, aldehydes, and olefins are manufactured from alkanes by mixing an alkane and a halogen selected from the group including chlorine, bromine, and iodine in a reactor to form alkyl halide and hydrogen halide. The alkyl halide only or the alkyl halide and the hydrogen halide are directed into contact with metal oxide to form an alcohol and/or an ether, or an olefin and metal halide. The metal halide is oxidized to form original metal oxide and halogen, both of which are recycled.

1 . A method for converting ethane to acetaldehyde comprising: 
 providing a quantity of ethane;    providing a quantity of at least one halogen selected from the group including chlorine, bromine, and iodine;    reacting the ethane with the halogen and thereby forming haloethane and hydrogen halide;    directing at least the haloethane into engagement with a metal oxide and thereby forming acetaldehyde and a metal halide.    
     
     
         2 . The method according to  claim 1  including additional steps of: 
 oxidizing the metal halide to form the original metaloxide and halogen;  
 recycling the metaloxide; and  
 recycling the halogen.  
 
     
     
         3 . The method according to  claim 1  wherein the step of reacting the ethane with the halogen is carried out in the presence of excess ethane.  
     
     
         4 . The method according to  claim 1  wherein the step of reacting ethane with halogen is carried out at a mole ratio of about 4:1 ethane to halogen.  
     
     
         5 . The method according to  claim 1  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the haloethane into engagement with a metaloxide selected from the group including CaO/CuO/TiO 2  and CUO/ZrO 2 .  
     
     
         6 . The method according to  claim 1  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the bromoethane into engagement with a metaloxide comprising CaO/CuO/TiO 2 .  
     
     
         7 . The method according to  claim 6  wherein the mol ratios of the components of the metaloxide are 25% CaO, 25% CuO, and 50% TiO 2 .  
     
     
         8 . The method according to  claim 1  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the haloethane into a metaloxide comprising CuO/ZrO 2 , and wherein the metaloxide comprises a mol ratio of 50% CuO 2  and 50% Zr O 2 .  
     
     
         9 . A method of converting ethane to acetaldehyde comprising: 
 providing a first reactor zone;    providing a quantity of ethane;    providing a quantity of a halogen selected from the group including chlorine, bromine, and iodine;    reacting the ethane with the halogen in the first reactor zone and thereby forming haloethane;    providing a second reactor zone;    providing a third reactor zone;    providing a quantity of a metaloxide within the third reactor zone;    directing the haloethane from the first reactor zone through the second reactor zone to the third reactor zone for reaction with the metaloxide therein to form acetaldehyde and metal halide.    
     
     
         10 . The method according to  claim 9  wherein the reaction of ethane and halogen in the first reactor zone is carried out at about 350° C.  
     
     
         11 . The method according to  claim 9  wherein the second reactor zone is maintained at room temperature, and wherein any dihaloethane produced during the ethane/halogen reaction in the first reactor zone is refluxed and collected in the second reactor zone.  
     
     
         12 . The method according to  claim 9  wherein the reaction of the haloethane with the metaloxide in the third reactor zone is carried out at a temperature of between about 250° C. and about 300° C.  
     
     
         13 . The method according to  claim 9  including additional steps of: 
 oxidizing the metal halide from the third reactor zone to form the original metaloxide and halogen;  
 recycling the metaloxide; and  
 recycling the halogen.  
 
     
     
         14 . The method according to  claim 9  wherein the step of reacting the ethane with the halogen is carried out in the presence of excess ethane.  
     
     
         15 . The method according to  claim 9  wherein the step of reacting ethane with the bromine is carried out at a mole ratio of about 4:1 ethane to halogen.  
     
     
         16 . The method according to  claim 9  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the haloethane into engagement with a metaloxide selected from the group including CaO/CuO/TiO 2  and CUO/ZrO 2 .  
     
     
         17 . The method according to  claim 9  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the haloethane into engagement with a metaloxide comprising CaO/CuO/TiO 2 .  
     
     
         18 . The method according to  claim 9  wherein the mol ratios of the components of the metaloxide are 25% CaO, 25% CuO, and 50% TiO 2 .  
     
     
         19 . The method according to  claim 9  wherein the step of directing the haloethane into engagement with a metaloxide is carried out by directing the haloethane into a metaloxide comprising CuO/ZrO 2 .  
     
     
         20 . The method according to  claim 19  wherein the metaloxide comprises a mol ratio of 50% CuO 2  and 50% Zr O 2 .