초록 ▼

An activated carbon composition of matter is disclosed comprising a mixture of: (a) a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms; and (

An activated carbon composition of matter is disclosed comprising a mixture of: (a) a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms; and (b) a second activated carbon having a plurality of pore sizes, pore volumes, and pore surface areas to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms. The pore size distribution of pores in the second activated carbon that adsorbs fluids having molecular diameters from about 4 Angstroms to about 15 Angstroms is greater than that of the first activated carbon. The second activated carbon is present in an amount sufficient to provide a methane working capacity of the mixture greater than the methane working capacity of the first activated carbon. A process of increasing the methane working capacity and methane adsorption of activated carbons is also disclosed comprising forming blends of the first and second activated carbons, as well as a process for separating fluids comprising contacting fluid compositions with the compositions of the invention. These include pressure swing adsorption, temperature swing adsorption and vacuum swing adsorption processes.

대표청구항 ▼

[ What is claimed is:] [1.] An activated carbon composition of matter comprising a mixture of:(a) a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 An

[ What is claimed is:] [1.] An activated carbon composition of matter comprising a mixture of:(a) a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms; and(b) a second activated carbon having a plurality of pore sizes, pore volumes, and pore surface areas to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms;the pore size distribution of pores in said second activated carbon that adsorbs fluids having molecular diameters from about 4 Angstroms to about 15 Angstroms being greater than that of said first activated carbon;said second activated carbon being present in an amount sufficient to provide a methane working capacity of said mixture greater than the methane working capacity of said first activated carbon. [15.] A process of increasing the methane working capacity of a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms, comprising mixing said first activated carbon with a second activated carbon having a plurality of pore sizes, pore volumes and pore surface areas to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000 Angstroms to thereby form a mixture;the pore size distribution of pores in said second activated carbon that adsorb fluids having molecular diameters from about 4 Angstroms to about 15 Angstroms being greater than that of the first activated carbon;said second activated carbon being present in an amount sufficient to provide a methane working capacity of said mixture greater than the methane working capacity of said first activated carbon. The process of claim 15, wherein the pore size distribution of pores in said first activated carbon that adsorbs fluids having molecular diameters from about 100 Angstroms to about 4,000 Angstroms being greater than that of said second activated carbon, so that the adsorption capacity of said composition for larger molecular diameter fluids is greater than said second activated carbon. The process of claim 16, wherein said first activated carbon is obtained from coal and said second activated carbon is obtained from coconut shells. The process of claim 17, wherein said first activated carbon is obtained from bituminous coal, subbituminous coal or mixtures thereof. The process of claim 18, wherein said first activated carbon and said second activated carbon are granular activated carbon compositions. [29.] A process of increasing the methane adsorption of a first activated carbon having a plurality of pore sizes, pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000, and a second activated carbon having a plurality of pore sizes, pore volumes and pore surface areas to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4,000,wherein the pore size distribution of pores in said first activated carbon that adsorbs fluids having molecular diameters from about 100 Angstroms to about 4,000 Angstroms is greater than that of said second activated carbon,the pore size distribution of pores in said second activated carbon that adsorb fluids having molecular diameters from about 4 Angstroms to about 15 Angstroms being greater than that of the first activated carbon,comprising forming a mixture of said first activated carbon and said second activated carbon in amounts sufficient to provide methane adsorption in the mixture, as measured by a methane isotherm, that is greater than the methane adsorption of either activated carbon.