Class / Patent application number | Description | Number of patent applications / Date published |
423477000 | Chlorine dioxide | 34 |
20080292534 | On-Demand Portable Chlorine Dioxide Generator - An on-demand portable chlorine dioxide generator has a reagent bound medium in a first enclosed volume; a complementary reagent solution in a second enclosed volume, and a structure for selecting between a first position where the complementary reagent solution is forced through the reagent bound medium and a second position where said complementary reagent solution remains isolated from the reagent bound ion exchange medium, where a ClO2 solution is generated only during periods when the structure for forcing is actuated. The ClO2 solution can be discharged for use as a portable sprayer that can be used to treat surfaces infected by anthrax or other biological contaminants. When the bound reagent is chlorite, the complementary reagent is an acid or an oxidant. When the bound reagent is an acid or an oxidant, the complementary reagent solution is a chlorite solution. | 11-27-2008 |
20090185970 | STABLE CHLORINE DIOXIDE TABLET - Provided is a stable solid composition that produces chlorine dioxide upon contact with water. | 07-23-2009 |
20090263313 | CHLORINE DIOXIDE GENERATION SYSTEMS - A chloride dioxide generation system made efficient by the use of a minimum number of seals and the use of a sophisticated computerized control system with the chlorine dioxide generation system comprising a) multiple PID loop control, b) a touch screen interface (HMI), c) automatic flow control of chemical precursors, d) a process controller, e) a minimum number of seals, f) a seal-less vacuum eductor, g) a unit design of the ejector; seal-less tubing connector and seal-less manual flowmeters, h) a vacuum eductor to be used with gas supply and other chemical feeds, i) a mass dispersion chlorine flowmeter to accurately supply amount of chlorine gas, j) an optical chlorine dioxide analyzer looped to the process controller and k) an automatic efficiency control screen. | 10-22-2009 |
20100135894 | METHOD OF PRODUCING CHLORINE DIOXIDE, AND ALKALINE COMPOSITION FOR CHLORINE DIOXIDE PRODUCTION TO BE USED IN THE METHOD - Disclosed is a method for producing chlorine dioxide using hypochlorite, chlorite and an acidic substance, wherein sodium hypochlorite and sodium chlorite are mixed together in advance, and then hydrochloric acid is added into the mixture liquid. | 06-03-2010 |
20100189630 | Cyclic process for the efficient generation of chlorine dioxide in dilute solutions - An efficient cyclic process and related compositions for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions at near neutral pH. The cyclic process provides a means of safe and effective use of chlorine dioxide with reduced concern of chlorite accumulation in the aqueous system. The disclosed chemistry used to support the cyclic process can be applied independently or in various combinations that are effectively inert. This dramatically reduces safety concerns since the chlorine dioxide is produced in-situ to the application and in dilute concentrations. Also, the process allows for regeneration of inert anions such as bromide and chlorite thereby reducing operating cost. | 07-29-2010 |
20100189631 | PERMEATION METHOD AND APPARATUS FOR PREPARING FLUIDS CONTAINING HIGH PURITY CHLORINE DIOXIDE - Method to prepare fluids (liquids and gases) containing pure chlorine dioxide which is not contaminated by the starting materials or the byproducts of the chlorine dioxide synthesis or to deliver pure chlorine dioxide into any medium capable of dissolving chlorine dioxide, wherein the chlorine dioxide generated in the process is transported across a pore free polymeric membrane via selective permeation into the target medium. Apparatus to realize the said method, wherein the generation of chlorine dioxide is carried out in such a reactor where some or all walls comprising the reactor, or the walls of a permeator unit attached to the reactor, are made of the said pore free polymer, characteristically some kind of silicone rubber, which is highly permeable to chlorine dioxide, but which is practically impermeable for the acidic and corrosive reagents used for the chlorine dioxide synthesis, its permeability being at least 3 orders of magnitude lower for these contaminating components compared to that of chlorine dioxide. The invention can be realized both by batch and by continuous reactors. | 07-29-2010 |
20100196252 | Chemical Combination for Generation of Disinfectant and Heat - This invention comprises a lightweight, portable chemical combination of reagents for sterilizing or disinfecting objects in the absence of electrical power or fire. The chemical combination includes a chemical oxidant with the capacity to liberate a biocidal intermediate, a chemical reductant of the oxidant with the capacity to react with the oxidant, and an effector to induce a reaction between the oxidant and reductant. In one embodiment, the oxidant comprises chlorite, the reductant comprises sulfite, and the effector comprises ascorbate. In another embodiment, the chemical combination comprises the oxidant, reductant, effector and iron-activated magnesium. When water or water solutions are added to either embodiment, the chemical combination generates heat, steam and a biocidal intermediate that can destroy contaminating microorganisms. In one embodiment, the biocidal intermediate is a halogen-based biocidal intermediate, such as chlorine dioxide. In another embodiment, the biocidal intermediate is a halogen-free biocidal intermediate. | 08-05-2010 |
20100209332 | Nonaqueous Chlorine Dioxide-Generating Compositions and Methods Related Thereto - A method for generating chlorine dioxide is disclosed in which chlorine dioxide generation is activated with a dry polar material. A system for generating chlorine dioxide is also disclosed, as well as compositions useful in the system and method. | 08-19-2010 |
20110052480 | CHLORINE DIOXIDE GENERATION SYSTEMS AND METHODS - Chlorine dioxide generation systems and methods are disclosed. In some embodiments, an optical analyzer may be positioned along a reactant feed line to measure a reactant concentration. A controller may adjust a flow rate of the reactant in response to information provided by the optical analyzer. | 03-03-2011 |
20110150748 | Article for Generating Chlorine Dioxide - An article for generating chlorine dioxide includes a canister containing a chlorine-dioxide generating composition. The articles in accordance with the invention are able to generate chlorine-dioxide gas, chlorine-dioxide solution, and chlorine-dioxide solution with surfactants. The canister includes at least one porous region that places an exterior of the canister in fluidic communication with an interior of the canister. The porous region, which in some embodiments, is realized as a mesh, is characterized by a size in a range of about 20 mesh to about 325 mesh. | 06-23-2011 |
20110250123 | Methods and apparatus for producing the halogen dioxide, chlorine dioxide, by ion exchange - The halogen dioxide, chlorine dioxide is produced from its chlorite reactant using ion exchange media in a stable reactant form, and then passing a known concentration of counter ions through the ion exchange media in a moist environment so that there is an exchange of ions, and the reactants that are released form activated chlorine dioxide within the ion exchange material. The ion exchange media both contributes reactants to and extracts contaminants from the moist environment via its ion exchange mechanism. The counter ions may be derived from one or more stable precursor solutions which themselves may contain reactants and/or soluble catalysts. The reactants of the precursor solutions cannot act as the counter ion, or ions, in the ion exchange mechanism, but the soluble catalysts can. The ion exchange media can be mixed or layered with one or more insoluble catalysts, to enhance the formation of the activated halogen dioxide, chlorine dioxide within the ion exchange material. | 10-13-2011 |
20110262342 | ON-DEMAND PORTABLE CHLORINE DIOXIDE GENERATOR - An on-demand portable chlorine dioxide generator has a reagent bound medium in a first enclosed volume; a complementary reagent solution in a second enclosed volume, and a structure for selecting between a first position where the complementary reagent solution is forced through the reagent bound medium and a second position where said complementary reagent solution remains isolated from the reagent bound ion exchange medium, where a ClO | 10-27-2011 |
20120148477 | AQUEOUS SOLUTIONS OF CHLORINE DIOXIDE WITH ENHANCED STABILITY AND METHODS FOR PRODUCING AND PACKAGING THEM - Aqueous solutions of chlorine dioxide are disclosed. The solutions are substantially free of transition metal ions, transition metal oxides, particulate contaminants. The solutions are uniquely stable with respect to their chlorine dioxide concentration. The solutions can contain chlorine dioxide in the concentration range of about 100 ppm or more to about 10,000 ppm, more preferably about 1,000 ppm or more to about 5,000 ppm and even more preferably about 2,000 ppm or more to about 4,000 ppm, and most preferably about 3,000 ppm. Preferably the solutions are substantially free of organic carbon and metal ions. Methods are disclosed for preparing aqueous solutions of chlorine dioxide comprising (1) purifying water by at least two methods selected from the group consisting of deionization, distillation, reverse osmosis (RO) filtration, carbon filtration, microporous filtration, ultrafiltration, hyperfiltration, ultraviolet oxidation, and electrodialysis, and (2) dissolving filtered chlorine dioxide gas into the water. | 06-14-2012 |
20120183469 | CHLORINE DIOXIDE GENERATION - Disclosed herein is an improved method for generating chlorine dioxide that involves reacting a diluted, chilled aqueous solution of sulfuric acid with an aqueous solution of sodium chlorite. | 07-19-2012 |
20130136685 | Portable Chlorie Dioxide Generator - The present invention provides a safe, disposable and biodegradable chlorine dioxide micro generator that uses water soluble paper and hydrogel or compressed cellulose encased in filter paper pouch. The chemicals are kept in a stabilize form until activated by the addition of water. Multiple levels of protection against early exposure to water such as a foil pouch and an impermeable outer container allow for the safe transportation and storage in small, ready for deployment amounts of the chemicals. Wicking materials packaged around the chemicals provide for the ready introduction of water to the chemicals at the proper time. Water dissolves the paper walls of the chemical pack housings and then the water facilitates the reaction between the acid and the sodium chlorite to form chlorine dioxide gas as will be described further hereunder. | 05-30-2013 |
20130202520 | APPARATUS FOR THE GENERATION OF GASES - The instant application provides apparatus and methods for the generation of gas, preferably chlorine dioxide. The methods and apparatus of the invention use a removable reaction chamber for the reaction of precursor chemicals, e.g., chlorite salt and an acid. The methods and compositions of the invention provide gas for a number of personal and commercial applications. | 08-08-2013 |
20140086821 | CHLORINE DIOXIDE GENERATOR - A chlorine dioxide generator includes a container body deformable in response to application of a force from the outside. The container body contains therein a solid acidic composition and an aqueous chlorite solution under a non-contact state from each other. The solid acidic composition comprises a porous material containing an acidic substance. The aqueous chlorite solution is sealed within an easily breakable enclosure. In operation, when the container body is deformed, the enclosure contained therein is broken to bring the aqueous chlorite solution into contact with the solid acidic composition, whereby chlorine dioxide gas is generated. This generated chlorine dioxide gas is discharged via a gas discharge port to the outside of the container body. | 03-27-2014 |
20140086822 | CHLORINE DIOXIDE GENERATION SYSTEMS AND METHODS - Chlorine dioxide generation systems and methods are disclosed. In some embodiments, an optical analyzer may be positioned along a reactant feed line to measure a reactant concentration. A controller may adjust a flow rate of the reactant in response to information provided by the optical analyzer. | 03-27-2014 |
20140199231 | SYSTEM, METHOD AND DEVICE FOR GENERATING CHLORINE DIOXIDE - A two-part system, method and device for producing a gaseous or aqueous chlorine dioxide solution is disclosed. The system includes a two part system where part one utilizes sodium chlorite in a dry chemical form (e.g., granulated, powder, and/or flake) securely contained within a device. Part two is a liquid acid solution that, when placed in contact with part one, will activate part one to produce chlorine dioxide gas or aqueous chlorine dioxide when water is added after part one is activated when exposed to part two which is a premade liquid acid solution. | 07-17-2014 |
20150030528 | METHOD OF MAKING CHLORINE DIOXIDE - A novel method of making chlorine dioxide is provided. The method includes the steps of combining a hypochlorite salt and trichloroisocyanuric acid reactants in solid state in an aqueous reaction medium; and mixing the reaction medium with a gaseous carrier under conditions suitable to generate chlorine dioxide. A novel apparatus for use in generating chlorine dioxide is also provided. | 01-29-2015 |
20150125382 | DEVICE AND METHOD FOR PRODUCING AQUEOUS CHLORINE DIOXIDE SOLUTIONS, AND STORAGE UNITS AND KITS FOR CORRESPONDING USAGE - An apparatus for preparing aqueous chlorine dioxide solutions is described, comprising (a) a reactor ( | 05-07-2015 |
20160002037 | Chlorine Dioxide Generator Using Redox Resin and Adsorbed Chlorite Salt - A chlorite salt-absorbent particle is prepared by absorbing a water soluble chlorite salt or a concentrated chlorite salt solution in an absorbent particle. The absorbent can be a silica gel particle or other particulate absorbent that can release the chlorite salt as an aqueous solution over time by simply contacting the chlorite salt-absorbent particle with water. The chlorine salt is extracted from the chlorite salt-absorbent particle over a period of minutes while being flushed with water. A chlorine dioxide generator in the form of a cartridge includes the chlorite salt-absorbent particles and an acid resin or a redox resin. Water can be introduced into an inlet of the cartridge and passes sequentially through the chlorite salt-absorbent particles and the acid resin or the redox resin with the discharge of a chlorine dioxide solution from the outlet of the cartridge. | 01-07-2016 |
20160068393 | Process for the Generation of Chlorine Dioxide - The present invention in one embodiment provides a process of generating chlorine dioxide by reacting formamidinesulfinic acid (FSA) and sodium chlorite in an aqueous solution. | 03-10-2016 |
20160251219 | METHODS AND SYSTEMS FOR PRODUCING HIGH PURITY GASEOUS CHLORINE DIOXIDE | 09-01-2016 |
423478000 | By reacting a chlorate | 10 |
20100055027 | Process for the production of chlorine dioxide - The invention concerns a process for the production of chlorine dioxide comprising formation of chlorine dioxide in a reaction medium in at least one reaction vessel and withdrawing chlorine dioxide from said at least one reaction vessel, the process further comprising a step of treating reaction medium or at least one process stream originating directly or indirectly from said at least one reaction vessel with an adsorbent efficient for removing chlorinated organic compounds from said at least one process stream. | 03-04-2010 |
20100233068 | APPARATUS AND METHODS FOR PRODUCING CHLORINE DIOXIDE - Chlorine dioxide (ClO | 09-16-2010 |
20110182800 | PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE - The invention relates to a process for the production of chlorine dioxide comprising forming chlorine dioxide in a reaction medium in a reaction vessel and withdrawing chlorine dioxide as a gas from the reaction medium in the reaction vessel, the process further comprising adding chlorine dioxide to at least one raw material used in the process. The invention further relates to the use of chlorine dioxide for the reduction of the amount of chlorinated aromatic compounds occurring in a process for the production of chlorine dioxide. | 07-28-2011 |
20120294794 | Process for the Production of Chlorine Dioxide - The invention relates to a process for the production of chlorine dioxide comprising formation of an aqueous solution comprising chlorine dioxide, bringing at least part of the aqueous solution comprising chlorine dioxide to its end-application within an average residence time of less than 60 minutes, and maintaining part of the obtained aqueous solution comprising chlorine dioxide in at least one storage tank. | 11-22-2012 |
20130209349 | PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE - The invention relates to a continuous process for the production of chlorine dioxide comprising: —feeding chlorate ions, hydrogen peroxide and an acid into a reactor comprising packing elements inside; —reacting said chlorate ions, hydrogen peroxide and acid in said reactor to form a product stream comprising chlorine dioxide; and, —withdrawing said product stream from said reactor. | 08-15-2013 |
423479000 | And a nitrogenous or carbonaceous compound | 4 |
20110176989 | PROCESS FOR PRODUCING CHLORINE DIOXIDE USING WASTE GLYCEROL FROM A BIODIESEL PLANT - A process for chlorine dioxide production uses waste glycerol from biodiesel plants as a reducing agent. This untreated waste stream may contain other reducing agents such as sodium chloride and methanol which were found to enhance the chlorine dioxide production. Other chemicals present in this waste stream did not affect the operation of the chlorine dioxide generator. Substituting the waste glycerol for methanol or other reducing agents helps kraft pulp mills in reducing the cost of producing chlorine dioxide while providing a use for the untreated waste glycerol stream. | 07-21-2011 |
20120156125 | PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE - Process for the continuous production of chlorine dioxide comprising generating chlorine dioxide in an aqueous reaction medium in a reaction vessel ( | 06-21-2012 |
20120201740 | Process for production of chlorine dioxide - The present invention relates to a process for production of chlorine dioxide comprising: reacting in an acidic reaction medium in a reaction vessel an alkali metal chlorate or chloric acid and methanol to generate chlorine dioxide, withdrawing from the reaction vessel a gas comprising chlorine dioxide and gaseous by-products, condensing part of the gas withdrawn to obtain a condensate; and removing the condensate from the non-condensed gas without re-circulating it back to the process for production of chlorine dioxide. | 08-09-2012 |
20120244063 | PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE - Disclosed is a process for the production of chlorine dioxide, by which sulphuric acid can be efficiently mixed into the reaction mixture. The process apparatus includes a reaction vessel ( | 09-27-2012 |
423480000 | And sulfur dioxide | 1 |
20100189632 | PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE - The invention concerns a process for the production of chlorine dioxide comprising generating chlorine dioxide in an aqueous reaction medium in a reaction vessel maintained at super-atmospheric pressure, withdrawing gaseous chlorine dioxide from said reaction medium, bringing withdrawn gaseous chlorine dioxide to an aqueous absorption medium and withdrawing gaseous chlorine dioxide from said absorption medium. | 07-29-2010 |