US2020176145A1PendingUtilityA1

Apparatus and Methods for Treatment of Radioactive Organic Waste

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Assignee: STUDSVIK INCPriority: Jan 30, 2015Filed: Dec 27, 2019Published: Jun 4, 2020
Est. expiryJan 30, 2035(~8.6 yrs left)· nominal 20-yr term from priority
Inventors:J. Bradley MasonWalter Scott Roesener
B01D 2259/40001B01D 39/2034B01J 8/087G21F 9/12B01D 39/2075B01D 2257/20G21F 9/30B01J 8/1836B01J 2208/00823B01D 2257/30G21F 9/00B01J 8/24G21F 9/32B01D 2258/02G21F 9/02B01D 53/04F23G 7/061B01J 2208/00017G21F 9/06
65
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Claims

Abstract

Treatment of radioactive waste comprising organic compounds and sulfur-containing compounds and/or halogen-containing compounds. An apparatus comprises a reaction vessel comprising a filter for carrying out thermal treatment of the waste and a thermal oxidizer. Utilizing co-reactants to reduce gas phase sulfur and halogen from treatment of wastes.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . An apparatus for the treatment of radioactive waste comprising organic compounds and sulfur-containing compounds and/or halogen-containing compounds, the apparatus comprising:
 (a) a reaction vessel comprising a jetted bed in the lower portion of the reaction vessel, and a filter for carrying out thermal treatment of the waste; and   (b) a thermal oxidizer,
 wherein the jetted bed comprises a bed of solids that is agitated in response to a localized introduction of jet gas, the jet gas inducing a mixing of the solids without fluidizing the bulk of the solids. 
   
     
     
         2 . The apparatus of  claim 1  further comprising:
 (c) an adsorption vessel comprising one or more types of adsorbent media for adsorbing sulfur-containing compounds and/or halogen-containing compounds after treatment of the waste by the reaction vessel. 
 
     
     
         3 . The apparatus of  claim 1 , wherein the bed in the reaction vessel comprising the filter comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         4 . The apparatus of  claim 1 , wherein the apparatus further comprises a process reaction vessel upstream of the reaction vessel comprising the filter. 
     
     
         5 . The apparatus of  claim 4 , wherein the process reaction vessel further comprises a bed in the lower portion of the process reaction vessel. 
     
     
         6 . The apparatus of  claim 5 , wherein the bed in the process reaction vessel comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         7 . The apparatus of  claim 1 , wherein the temperature of the reaction vessel comprising the filter is below the temperature at which the sulfur-containing compounds and/or halogen-containing compounds volatilize. 
     
     
         8 . The apparatus of  claim 4 , wherein the temperature of the process reaction vessel is below the temperature at which the sulfur-containing compounds and/or halogen-containing compounds volatilize. 
     
     
         9 . The apparatus of  claim 2 , wherein the adsorbent media comprises one or more types of adsorbent media selected from the group consisting of: compounds that adsorb sulfur-containing compounds and produce a sulfate compound; compounds that adsorb sulfur-containing compounds and produce a metal sulfide, alkaline earth sulfide, or another sulfide; metal or alkaline earth adsorbents; iron, nickel or zinc metals; metal oxides; and Al(OH) 3 . 
     
     
         10 . An apparatus for the treatment of radioactive waste comprising organic compounds and sulfur-containing compounds and/or halogen-containing compounds, the apparatus comprising:
 (a) a reaction vessel comprising a jetted bed in the lower portion of the reaction vessel, and a filter for carrying out thermal treatment of the waste;   (b) a thermal oxidizer; and   (c) an adsorption vessel comprising one or more types of adsorbent media for adsorbing sulfur-containing compounds and/or halogen-containing compounds after treatment of the waste by the reaction vessel,
 wherein the jetted bed comprises a bed of solids that is agitated in response to a localized introduction of jet gas, the jet gas inducing a mixing of the solids without fluidizing the bulk of the solids. 
   
     
     
         11 . The apparatus of  claim 10 , wherein the bed in the reaction vessel comprising the filter comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         12 . The apparatus of  claim 10 , wherein the apparatus further comprises a process reaction vessel upstream of the reaction vessel comprising the filter. 
     
     
         13 . The apparatus of  claim 12 , wherein the process reaction vessel further comprises a bed in the lower portion of the process reaction vessel. 
     
     
         14 . The apparatus of  claim 13 , wherein the bed in the process reaction vessel comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         15 . The apparatus of  claim 10 , wherein the temperature of the reaction vessel comprising the filter is below the temperature at which the sulfur-containing compounds and/or halogen-containing compounds volatilize. 
     
     
         16 . The apparatus of  claim 12 , wherein the temperature of the process reaction vessel is below the temperature at which the sulfur-containing compounds and/or halogen-containing compounds volatilize. 
     
     
         17 . The apparatus of  claim 10 , wherein the adsorbent media comprises one or more types of adsorbent media selected from the group consisting of: compounds that adsorb sulfur-containing compounds and produce a sulfate compound; compounds that adsorb sulfur-containing compounds and produce a metal sulfide, alkaline earth sulfide, or another sulfide; metal or alkaline earth adsorbents; iron, nickel or zinc metals; metal oxides; and Al(OH) 3 . 
     
     
         18 . An apparatus for the treatment of radioactive waste comprising organic compounds and sulfur-containing compounds and/or halogen-containing compounds, the apparatus comprising:
 (a) a reaction vessel comprising a jetted bed in the lower portion of the reaction vessel, and a filter for carrying out thermal treatment of the waste;   (b) a thermal oxidizer;   (c) an adsorption vessel comprising one or more types of adsorbent media for adsorbing sulfur-containing compounds and/or halogen-containing compounds after treatment of the waste by the reaction vessel; and   (d) a process reaction vessel upstream of the reaction vessel comprising the filter,
 wherein the jetted bed comprises a bed of solids that is agitated in response to a localized introduction of jet gas, the jet gas inducing a mixing of the solids without fluidizing the bulk of the solids. 
   
     
     
         19 . The apparatus of  claim 18 , wherein the bed in the reaction vessel comprising the filter comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         20 . The apparatus of  claim 18 , wherein the process reaction vessel further comprises a bed in the lower portion of the process reaction vessel. 
     
     
         21 . The apparatus of  claim 20 , wherein the bed in the process reaction vessel comprises the waste, one or more co-reactants and optionally, inert bed media. 
     
     
         22 . The apparatus of  claim 18 , wherein the adsorbent media comprises one or more types of adsorbent media selected from the group consisting of: compounds that adsorb sulfur-containing compounds and produce a sulfate compound; compounds that adsorb sulfur-containing compounds and produce a metal sulfide, alkaline earth sulfide, or another sulfide; metal or alkaline earth adsorbents; iron, nickel or zinc metals; metal oxides; and Al(OH) 3 . 
     
     
         23 . The apparatus of  claim 18 , wherein the reaction vessel contains an oxidizing gas.

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