Use of recycled byproducts to create hydrogen for use in conversion of olefins to jet fuel

Abstract

A process for providing hydrogen in a process to produce jet fuel from methanol comprising producing a supply of hydrogen from a hydrogen production unit to be sent to one or more vessels within said process and wherein additional supplies of hydrogen are recovered from a recycle stream or recycle streams from one or more reactors or vessels and sent to supplement the first supply of hydrogen. The additional supplies of hydrogen are recovered from a hydrogenation reactor downstream of an oligomerization reactor, a methanol synthesis reactor or a hydrogenation reactor downstream from a DME water column and sent to the methanol synthesis reactor, hydrogenation reactor or acetylene converter.

1 . A process for providing hydrogen in a process to produce jet fuel from methanol comprising producing a supply of hydrogen from a hydrogen production unit to be sent to one or more vessels within said process and wherein additional supplies of hydrogen are recovered from reaction in which hydrogen is not fully consumed and taken in a recycle stream or recycle streams from one or more reactors or vessels and sent to supplement said first supply of hydrogen. 
     
     
         2 . The process of  claim 1  wherein said hydrogen production unit is an electrolyzer, steam reformer or autothermal reformer. 
     
     
         3 . The process of  claim 2  wherein said first supply of hydrogen is sent to a hydrogenation reactor and a methanol synthesis reactor. 
     
     
         4 . The process of  claim 1  wherein said additional supply of hydrogen is a second supply of hydrogen that is recovered from a hydrogenation reactor downstream from an oligomerization reactor. 
     
     
         5 . The process of  claim 1  wherein said additional supply of hydrogen is a third supply of hydrogen that is recovered from a hydrogenation reactor downstream from a DME wash column in a light olefin recovery process section. 
     
     
         6 . The process of  claim 1  wherein said additional supply of hydrogen is a fourth supply of hydrogen that is recovered from a methanol synthesis unit. 
     
     
         7 . The process of  claim 4  wherein said second supply of hydrogen is sent from said hydrogenation reactor to a selective hydrogenation reactor within a light olefin recovery process section of said process. 
     
     
         8 . The process of  claim 4  wherein said second supply of hydrogen is sent from said hydrogenation reactor to an acetylene conversion reactor within a light olefin recovery process section of said process. 
     
     
         9 . The process of  claim 4  wherein a portion of said second supply of hydrogen is sent to a methanol synthesis unit. 
     
     
         10 . The process of  claim 5  wherein said third supply of hydrogen is sent from said hydrogenation reactor to an acetylene conversion reactor within a light olefin recovery process (LORP) section of said process. 
     
     
         11 . The process of  claim 5  wherein a portion of said third supply of hydrogen is sent to a methanol synthesis unit. 
     
     
         12 . The process of  claim 6  wherein said fourth supply of hydrogen is sent to a hydrogenation reactor which is downstream of an oligomerization reactor. 
     
     
         13 . The process of  claim 6  wherein said fourth supply of hydrogen is sent from said hydrogenation reactor to a selective hydrogenation reactor within a Light Olefin Recovery Process (LORP) section of said process. 
     
     
         14 . The process of  claim 6  wherein said fourth supply of hydrogen is sent from said hydrogenation reactor to an acetylene conversion reactor within a light olefin recovery process (LORP) section of said process. 
     
     
         15 . A process for providing hydrogen in a process to produce jet fuel from methanol comprising producing a supply of hydrogen from a hydrogen production unit to be sent to one or more vessels within said process and wherein additional supplies of hydrogen are recovered from reactions in which hydrogen is not fully consumed and recovered from a purification unit in a recycle stream or recycle streams from one or more reactors or vessels and sent to supplement said first supply of hydrogen. 
     
     
         16 . The process of  claim 15  wherein said hydrogen production unit is an electrolyzer, steam reformer or autothermal reformer. 
     
     
         17 . The process of  claim 16  wherein said first supply of hydrogen is sent to a hydrogenation reactor and a methanol synthesis reactor. 
     
     
         18 . The process of  claim 15  wherein said additional supply of hydrogen is a second supply of hydrogen that is recovered from a hydrogenation reactor downstream from an oligomerization reactor. 
     
     
         19 . A process for providing hydrogen in a process to produce jet fuel from methanol comprising producing a supply of hydrogen from a hydrogen production unit to be sent to one or more vessels within said process, wherein said hydrogen production unit is an electrolyzer, steam reformer or autothermal reformer, and wherein additional supplies of hydrogen are recovered from reaction in which hydrogen is not fully consumed and recovered from a purification unit in a recycle stream or recycle streams from one or more reactors or vessels and sent to supplement said first supply of hydrogen. 
     
     
         20 . The process of  claim 19  wherein said first supply of hydrogen is sent to a hydrogenation reactor and a methanol synthesis reactor.