摘要:
A method for processing spent radioactive ion exchange resin formed in a nuclear power plant by a two-step pyrolysis method. First, the spent resin is heated at 350°C to decompose functional groups selectively. Then the base polymer, formed as residue, is decomposed at a temperature above 350°C, e.g. 600°C. After the thermal decomposition, exhaust gases which require a special exhaust gas disposal means, such as NO x and SO x can be reduced to below 1/20.
摘要:
A safe and controllable method of treating a secondary battery (15) having at least one component containing alkali metal, comprises the steps of opening the battery casing, and introducing a gas containing at least one of water vapour and alcohol vapour into a closed chamber (1) containing the battery thereby to form alkali metal hydroxide. To control hydrogen concentration, the rate of introduction of water and alcohol vapour may be varied. Apparatus for carrying out this method is also described.
摘要:
A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is in contact with lithium existing inside an article formed on the surface of the above-described negative electrode under a second condition. The cells can be effectively treated under safety condition to collect either the valuable substances, or the cell constructive components.
摘要:
The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m 2 /g and a structural form of amorphous state or a phase resemble to lanthanoide β-alumina. The composite oxide can be converted to lanthanoide β-alumina when heated to an elevated temperature above 1000° C within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce. The present disclosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.
摘要:
A catalyst for gas/liquid reactions, characterized by having a sheet or film-form water-repellent porous carrier having gas permeability and liquid impermeability and a catalytically active component supported on at least one surface of said carrier.
摘要:
The disclosure is concerned with a high temperature stable catalyst comprising an alumina base support and a catalytically active component supported on the support. The support is featured by its specific composite oxide having a specific surface area of at least 10 m 2 /g and a structural form of amorphous state or a phase resemble to lanthanoide β-alumina. The composite oxide can be converted to lanthanoide β-alumina when heated to an elevated temperature above 1000° C within 2 hours. The composite oxide is substantially free from such ingredients as accelerate grain growth of alumina. The ingredients are for example Cr, Sr or Ce. The present disclosure is also concerned with a process for preparing the catalyst and a process for conducting chemical reactions such as steam reforming, desulfurization of heavy oil, cracking of hydrocarbons, etc. using the catalyst.
摘要:
A catalyst for coal liquefaction consisting essentially of at least one substance which is able to be molten metal at 350 to 500°C in an atmosphere of hydrogen can give remarkably high conversion of coal when used as catalyst in a coal liquefaction reaction.
摘要:
A catalyst for coal liquefaction consisting essentially of at least one substance which is able to be molten metal at 350 to 500°C in an atmosphere of hydrogen can give remarkably high conversion of coal when used as catalyst in a coal liquefaction reaction.