Desulfurizer comprising activated carbon and method of desulfurization
AssigneesOsaka Gas Co., Ltd., Mitsubishi Heavy Industries, Ltd.
InventorsAkinori Yasutake, Norihisa Kobayashi, Takashi Kurisaki, Masaaki Yoshikawa
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Abstract
A desulfurization apparatus for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material. The carbon material, which is provided in a desulfurization tower, is at least one species selected from activated carbon and activated carbon fiber. The apparatus contains an NO2-gas-feeding apparatus for feeding NO2 gas into the desulfurization tower. Within the desulfurization tower, a showering mechanism is provided at the top, the showering mechanism adjusting water content of the flue gas in the desulfurization tower to that corresponding to saturation with water vapor or higher at the treatment temperature.
Claims19
A desulfurization apparatus for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material provided in a desulfurization tower, the porous carbon material being at least one species selected from the group consisting of activated carbon and activated carbon fiber, the apparatus comprising:
- said desulfurization tower containing said porous material;
- a flue gas inlet configured to supply the flue gas containing sulfur oxides to the desulfurization tower;
- and
- an NO2-gas-feeding apparatus for feeding NO2 gas into the desulfurization tower.
A desulfurization method for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material provided in a desulfurization tower, the porous carbon material being at least one species selected from the group consisting of activated carbon and activated carbon fiber, the method comprising:
- providing a desulfurization tower containing the porous carbon material;
- supplying the flue gas containing sulfur oxides to the desulfurization tower;
- and
- feeding, separate from the flue gas, an NO2 gas into the desulfurization tower.
A desulfurization apparatus for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material provided in a desulfurization tower, the porous carbon material being at least one species selected from the group consisting of activated carbon and activated carbon fiber, the apparatus comprising said desulfurization tower containing said porous material and an NO-oxidation apparatus for oxidizing NO contained in the flue gas to be fed into the desulfurization tower to thereby form NO2, the NO-oxidation apparatus being provided upstream of the desulfurization tower and comprising an oxidation means selected from the group consisting of an electric-discharge-oxidation means, an oxidation-catalyst-oxidation means, a hydrogen-peroxide-oxidation means, and combinations thereof.
A desulfurization method for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material provided in a desulfurization tower, the porous carbon material being at least one species selected from the group consisting of activated carbon and activated carbon fiber, wherein NO contained in the flue gas to be fed into the desulfurization tower is oxidized in a NO-oxidation apparatus to form NO2, followed by desulfurization, wherein the NO-oxidation apparatus employs an oxidation means selected from the group consisting of an electric-discharge-oxidation means, an oxidation-catalyst-oxidation means, an hydrogen-peroxide-oxidation means, and combinations thereof.
Dependencies are inferred from the claim text.