Patent application number | Description | Published |
20100140186 | Acrylamide Removal from Aqueous Fluid Bodies - This invention is a method for removing acrylamide from large bodies of water or from other acrylamide-containing aqueous fluids. The acrylamide-containing water or aqueous fluid is treated with a peroxygen that is preferably persulfate, hydrogen peroxide or activated peracetic acid. The invention is particularly useful for treatment of acrylamide-containing aqueous fluids associated with oil and gas drilling and recovery applications and includes aqueous well treatment fluid compositions comprising an acrylamide-derived polymer and a peroxygen compound capable of generating free radicals, useful in slickwater well treatment applications. | 06-10-2010 |
20100160449 | Peracetic Acid Oil-Field Biocide and Method - Aqueous well treatment fluid compositions with biocidal activity are disclosed comprising a polymer for modifying fluid viscosity in the aqueous fluid, an organic monocarboxylic peracid being present in an anti-microbial amount of about 1 ppm to about 1000 ppm, and a controlled amount of hydrogen peroxide also being present. Peracetic acid is the preferred peracid. The viscosity-modifying polymer in the aqueous well treatment fluid composition may serve to reduce friction in the fluid or increase fluid viscosity. A method of using such compositions is also disclosed. | 06-24-2010 |
20100196197 | Sterilization Method - A method of sterilizing a material, said method comprising the steps of: (a) introducing a solution comprising peroxyacetic acid into a hot gaseous stream to produce a peroxyacetic acid vapor; and (b) contacting such peroxyacetic acid vapor with the material to be sterilized. | 08-05-2010 |
20100222242 | PERACID OIL-FIELD VISCOSITY BREAKER AND METHOD - Aqueous well treatment fluid compositions are disclosed comprising an aqueous fluid containing polymer or copolymer for modifying fluid viscosity of the aqueous fluid and, in addition, an agent for effecting a controlled reduction in the aqueous fluid viscosity in a subterranean environment. The viscosity-reducing agent comprises a dilute concentration of peracetic acid. A method of using such compositions in oil- and gas-field treatment operations is also disclosed. | 09-02-2010 |
20120189494 | Peracetic Acid Vapor Sterilization of Food and Beverage Containers - The present invention is directed to a method of sterilizing a surface comprising treating such surface with a vapor comprising peracetic acid at a concentration of at least about 3500 ppm at between about 57° and about 75° C. Such method is preferably conducted in the absence of a hydrogen peroxide initiator, and is particularly suitable for the sterilization of polyethylene terephthalate bottles. | 07-26-2012 |
20140131975 | Trailer and Method for Transporting Peracetic Acid - A trailer for transporting a liquid mixture having at least about 5% peracetic acid by weight includes a stainless steel tank having an external spill containment enclosure and a predetermined maximum allowable working pressure. One or more pressure relief valves are included in a wall of the tank within the external spill containment enclosure and configured to provide pressure relief to the tank at a pressure of between about 20%-50% of the maximum working pressure of the tank, thereby preventing over-pressurization of a reactive and decomposing fluid during a fire event. Wheels and a kingpin are affixed to the tank to enable transportation over public roadways. | 05-15-2014 |
20150050184 | STERILIZATION METHOD - A method of sterilizing a material, said method comprising the steps of: (a) introducing a solution comprising peroxyacetic acid into a hot gaseous stream to produce a peroxyacetic acid vapor; and (b) contacting such peroxyacetic acid vapor with the material to be sterilized. | 02-19-2015 |
20150078978 | TREATMENT OF NITROGEN OXIDES IN FLUE GAS STREAMS - A method for removing nitrogen oxides in stationary source combustion flue gas streams includes introducing a reagent or a mixture comprising carbamide peroxide and water as a reducing agent. | 03-19-2015 |