Structured adsorbent bed for capture of co2 from low pressure and low concentration sources

Abstract

A structured adsorbent sheet, is provided including a nano-adsorbent powder, and a binder material, wherein the nano-adsorbent powder is combined with the binder material to form an adsorbent material, and a porous electrical heating substrate, wherein the adsorbent material is applied to the porous electrical heating substrate thereby forming a structured adsorbent sheet. A structured adsorbent module is provided, including a plurality of stacked structured adsorbent sheets, configured to produce a plurality of fluid passages, wherein the plurality of fluid passages have a cross-sectional shape in the direction of a fluid stream. The structured adsorbent module may have a cross-sectional shape that is trapezoidal, rectangle, square, triangular or sinusoidal. A structured adsorbent bed is provided, including a plurality of modules, stacking the modules, thereby providing a plurality of process fluid passages, and a process fluid inlet and a process fluid outlet, in fluid communication with the plurality of process fluid.

What is claimed is: 
     
         1 . A structured adsorbent sheet, comprising:
 a nano-adsorbent powder, and   a binder material,   wherein the nano-adsorbent powder is combined with the binder material to form an adsorbent material, and   a porous electrical heating substrate,   wherein the adsorbent material is applied to the porous electrical heating substrate thereby forming a structured adsorbent sheet.   
     
     
         2 . The structured adsorbent sheet of  claim 1 , wherein the nano-adsorbent powder is a nano-particle adsorbent. 
     
     
         3 . The structured adsorbent sheet of  claim 1 , wherein the nano-adsorbent powder is selected from the group consisting of crystal zeolite, activated carbon, activated alumina, silica gel, and metal organic framework (MOF). 
     
     
         4 . The structured adsorbent sheet of  claim 1 , wherein the size of nano-adsorbent powder is less than 1 micron. 
     
     
         5 . The structured adsorbent sheet of  claim 4 , wherein the size of nano-adsorbent powder is less than 0.1 microns, 
     
     
         6 . The structured adsorbent sheet of  claim 4 , wherein the size of nano-adsorbent powder is less than 0.01 microns 
     
     
         7 . The structured adsorbent sheet of  claim 4 , wherein the size of nano-adsorbent powder is between 0.1 and 1 micron. 
     
     
         8 . The structured adsorbent sheet of  claim 7 , wherein the size of nano-adsorbent powder is between 0.02 and 0.5 micron. 
     
     
         9 . The structured adsorbent sheet of  claim 1 , wherein the porous electrical heating substrate is a wire mesh. 
     
     
         10 . The structured adsorbent sheet of  claim 9 , wherein the wire mesh has a wire diameter of less than or equal to 1000 microns. 
     
     
         11 . The structured adsorbent sheet of  claim 9 , wherein the wire mesh has a wire diameter of less than or equal to 500 microns. 
     
     
         12 . The structured adsorbent sheet of  claim 9 , wherein the wire mesh has a center to center spacing of greater than 500 microns. 
     
     
         13 . The structured adsorbent sheet of  claim 9 , wherein the wire mesh has a center to center spacing of less than 5000 microns. 
     
     
         14 . The structured adsorbent sheet of  claim 13 , wherein the wire mesh has a center to center spacing of less than 1000 microns. 
     
     
         15 . The structured adsorbent sheet of  claim 1 , wherein the porous electrical heating substrate comprises nichrome. 
     
     
         16 . The structured adsorbent sheet of  claim 1 , wherein the porous electrical heating substrate comprises nichrome, copper, aluminum, stainless steel, or carbon, alone or in combination. 
     
     
         17 . The structured adsorbent sheet of  claim 1 , wherein the adsorbent material as applied to the porous electrical heating substrate has a thickness of between 50 and 1000 microns. 
     
     
         18 . The structured adsorbent sheet of  claim 17 , wherein the thickness is between 100 and 1000 microns. 
     
     
         19 . The structured adsorbent sheet of  claim 17 , wherein the thickness is 400 microns. 
     
     
         20 . The structured adsorbent sheet of  claim 1 , wherein the nano-adsorbent powder is modified by ion exchange or impregnated with promoters to enhance CO2 adsorption. 
     
     
         21 . The structured adsorbent sheet of  claim 20 , wherein the promoter is amine. 
     
     
         22 . A structured adsorbent module comprising, a plurality of stacked structured adsorbent sheets as defined in  claim 1 , configured to produce a plurality of fluid passages, wherein the plurality of fluid passages have a cross-sectional shape in the direction of a fluid stream. 
     
     
         23 . The structured adsorbent module of  claim 20 , wherein the cross-sectional shape is trapezoidal, rectangle, square, triangular or sinusoidal. 
     
     
         24 . A structured adsorbent bed comprising;
 a plurality of modules in accordance with  claim 20 ,   stacking the modules, thereby providing a plurality of process fluid passages, and   a process fluid inlet and a process fluid outlet, in fluid communication with the plurality of process fluid passages.   
     
     
         25 . The structured adsorbent bed of  claim 24 , wherein said modules are made from the same or different adsorbent materials selected from zeolite, activated carbon, activated alumina, silica gel and MOF materials. 
     
     
         26 . The structured adsorbent bed of  claim 24 , wherein said a process fluid channels have the same flow direction through each module in the bed. 
     
     
         27 . The structured adsorbent bed of  claim 24 , wherein the porous electrical heating substrate in each module has a good contact each other in the modules so electricity can be conducted throughout the entire bed