Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7439298 | Pyrogenically produced silicon dioxide powder and silicone sealing compound containing this powder Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 150±15 m2/g, wherein the aggregates display an average surface area of 12000 to 20000 nm2, an average equivalent circle d... | 10/21/2008 |
| 7416715 | Method and apparatus for the production of gaseous ammonia from a urea solution A safe, economical and predictable process for producing ammonia from a urea solution, preferably where only a small amount of ammonia is required, (i.e. for SCR denitrification for small boilers, flue gas conditioning to enhance precipitator efficiency and/or allev... | 08/26/2008 |
| 7294313 | Device and method for producing ammonia from solid urea pellets A device for producing ammonia from urea pellets includes a pellet dispensing device, a pellet accelerator, a pellet shooting channel, and an ammonia reactor having a chamber or zone for shooting in urea pellets and a pellet deflector arranged on an end of the shoot... | 11/13/2007 |
| 7273595 | Method and apparatus for the production of gaseous ammonia from a urea solution A safe, economical and predictable process for producing ammonia from a urea solution, preferably where only a small amount of ammonia is required, (i.e. for SCR denitrification for small boilers, flue gas conditioning to enhance precipitator efficiency and/or allev... | 09/25/2007 |
| 6403046 | Pollution control systems using urea and ammonia for the control of emissions from the flue gas of fossil fuel burning facilities In many situations where the maximum NOx reduction capabilities of conventional SCR systems are not necessary, and alternative SNCR systems may not economically provide desired NOx reduction, a staged SCR/SNCR system is believed to be the most appropriate... | 06/11/2002 |
| 5346968 | Oligosiloxanes and reinforced thermoplastic and ceramic materials obtainable therewith Oligosiloxanes of the formula I ##STR1## where R1 is a C1 -C4 -alkyl and n is from 2 to 50, are chiefly used for fabricating fiber-reinforced composite and ceramic materials.... | 09/13/1994 |
| 4508693 | Solution removal of HCN from gaseous streams, with pH adjustment of reacted solution and hydrolysis of thiocyanate formed A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution and formation of ammonium thiocyanate in solution, precipitation and rem... | 04/02/1985 |
| 4505881 | Ammonium polysulfide removal of HCN from gaseous streams, with subsequent production of NH3, H2 S, and CO2 A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution, formation of ammonium thiocyanate in solution, decomposition of ammoniu... | 03/19/1985 |
| 4497784 | Solution removal of HCN from gaseous streams, with hydrolysis of thiocyanate formed A process for the removal of HCN from gaseous streams is described, the process being characterized by reaction of the HCN in the gaseous stream with an ammonium polysulfide solution, formation of ammonium thiocyanate, and hydrolysis of the ammonium thioc... | 02/05/1985 |
| 4360504 | Simultaneous destruction of trace components in the reaction off-gas from the synthesis of melamine The reaction off-gas from the synthesis of melamine consists, after separating off the melamine, mainly of ammonia and carbon dioxide, with traces of hydrogen cyanide, isocyanic acid, urea and residual melamine. To remove these trace components, the off-g... | 11/23/1982 |
| 3965243 | Recovery of sodium thiocyanate A process is described whereby accumulated impurities, consisting mainly of sodium tiocyanate are continuously removed from scrubbing liquors used for removal of hydrogen sulphide from fuel gases and the liquors thereby regenerated and re-used in the hydr... | 06/22/1976 |
| 3956460 | Process for the treatment of gas streams containing hydrogen cyanide Ammonia, hydrogen cyanide and hydrogen sulfide contained in gas streams are separated from the gas streams by contacting the gas stream with an aqueous solution containing free oxygen for a time sufficient for the ammonia, hydrogen sulfide and hydrogen cy... | 05/11/1976 |
| 3935188 | Removal of hydrogen cyanide from acidic gases In a process for the removal of hydrogen cyanide from raw gases containing at least one other acidic component selected from the group consisting of hydrogen sulfide, carbonyl sulfide and mixtures thereof comprising scrubbing said other components from th... | 01/27/1976 |
