초록 ▼

A system is provided in which particulates, nitrogen oxides, and sulfur oxides are simultaneously removed from flue gases in a granular bed filter and scrubber with a nitrogen oxide-capturing reducing agent and a bed of sulfur oxide-capturing and particulate-removing material. the spent sulfur oxide

A system is provided in which particulates, nitrogen oxides, and sulfur oxides are simultaneously removed from flue gases in a granular bed filter and scrubber with a nitrogen oxide-capturing reducing agent and a bed of sulfur oxide-capturing and particulate-removing material. the spent sulfur oxide-capturing and particulate-removing material can be regenerated in a lift pipe riser.

대표청구항 ▼

A gas purification system, comprising: a substantially vertical vessel having a top portion, a bottom portion, an intermediate portion extending between and connecting said top and bottom portions, an absorber inlet connected to and communicating with said top portion for feeding a substantially non

A gas purification system, comprising: a substantially vertical vessel having a top portion, a bottom portion, an intermediate portion extending between and connecting said top and bottom portions, an absorber inlet connected to and communicating with said top portion for feeding a substantially nonmagnetic sulfur oxide-capturing and particulate-removing material generally downwardly into said vertical vessel, a bed of nonmagnetic sulfur oxide-capturing and particulate-removing material positioned in said lower portion for simulataneously removing a substantial portion of particulates and sulfur oxides from an influent gaseous stream in the absence of an induced electromagnetic field, an absorbent outlet extending downwardly from said bottom portion, a conduit providing a gas inlet line extending downwardly into said top portion, said conduit having a downwardly facing discharge mouth providing an outlet for feeding an influent gaseous stream containing particulates, nitrogen oxides and sulfur oxides, substantially downwardly into said bed of nonmagnetic sulfur oxide-capturing and particulate-removing material, a reducing agent gas injector providing a reducing gas inlet connected to and communicating with said conduit for feeding a nitrogen oxide-capturing reducing gas into said vertical vessel to substantially remove nitrogen oxides from said influent gaseous stream, a unitary common feed line extending between, connecting, and communicating with said reducing agent gas injector and said conduit and a gas outle connected to and communicating with one of said portions of said vertical vessel for discharging said gases from said vertical vessel; said bed of substantially nonmagnetic sulfur oxide-capturing and particulate-removing material selected from the group consisting essentially of nonmagnetic adsorbers and nonmagnetic adsorbers with at least one promoter thereon, said nonmagnetic adsorbers substantially commprising an oxide of at least one metal selected from the group consisting of aluminum, bismuth, manganese, yttrium, antimony, rare earth metals, Group 1a metals, and Group 2a metals, and said promoter comprising at least one member selected from the group consisting essentially of rare earth metals, Group 8 metals, chromium, vanadium, antimony, silver, rhenium, and combinations thereof; and said nitrogen oxide-capturing reducing gas selected from the group consisting of hydrogen, carbon monoxide, ammonia, light hydrocarbon gases, and combinations thereof.