Agent for and process of treating exhaust gas
AssigneeMitsui Chemicals, Inc.
InventorsIsao Harada, Sadaichi Komohara
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Abstract
An agent for treating an exhaust gas, which is a mixture of a solid metal oxide and a solid metal carbonate as a main component, the metal being selected from the group of metal elements consisting of Mn, Fe, Ni, Cu and Zn. The agent is made of a molded article obtained by granulation, pelletization or extrusion of the mixture, and can be used in a process of treating an exhaust gas, capable of reducing the concentration of the exhaust gas containing a low concentration of a metal hydride gas and/or an organometallic gas to at least 0.5 ppm or lower.
Claims17
An agent for treating an exhaust gas, comprising a mixture of a solid metal oxide and a solid metal carbonate as a main component, the metal of the oxide being selected from the group of metal elements consisting of Cu, Li, Ni, Fe, Mn and Zn, and the metal of the carbonate being selected from the group of metal elements consisting of Mn, Ni, Cu and Zn, said agent being made of a molded article obtained by granulation, A pelletization or extrusion of the mixture wherein the molded article has a solid density within the range of 1.5 to 3.0 g/cm3.
An agent for treating an exhaust gas, comprising a mixture of a cupric oxide and a basic copper carbonate as a main component, said mixture having a peak intensity ratio A/B within a range from 0.2 to 8 with a proviso that a value of a maximum peak intensity at 2θ within a range from 38.6 to 39.0° is A (cupric oxide) and a value of a maximum peak intensity at 2θ within a range from 31.1 to 31.5° is B (basic copper carbonate) in XRD, said agent being made of a molded article obtained by granulation, pelletization or extrusion of the mixture wherein the molded article has a solid density within the range of 1.5 to 3.0 g/cm3.
A process of treating an exhaust gas, which comprises packing a packing container with a treating agent comprising a mixture of a solid metal oxide and a solid metal carbonate as a main component, and passing the exhaust gas containing a metal hydride gas and/or an organometallic gas through a bed packed with the treating agent, thereby to treat the exhaust gas at room temperature wherein the treating agent has a solid density within the range of 1.5 to 3.0 g/cm3.
Dependencies are inferred from the claim text.