Abstract:
A method and apparatus for production of a high-concentration H2SO5 solution is presented. This high-concentration H2SO5 solution is useful for producing a stable, non-hygroscopic triple salt. The invention includes a single-stage reactor that includes a reservoir for holding an oxyacid solution and an inlet to the reservoir for receiving a peroxide solution. The peroxide solution is added such that a gradient of peroxide concentration forms in the oxyacid solution as a function of distance from the inlet, and less than all of the oxyacid solution reacts with the peroxide solution at a given time. A stirring mechanism slowly dissipates the gradient, so that any H2SO5 formed as a result of reaction between the peroxide and the oxyacid is stirred away from the high-peroxide concentration zone, thereby preventing the decomposition of H2SO5 by an equilibrium reaction. The temperature of the reservoir is maintained at less than or equal to 20 ° C.
Abstract translation:提出了一种生产高浓度H2SO4溶液的方法和装置。 该高浓度H2SO5溶液可用于生产稳定的非吸湿性三重盐。 本发明包括单级反应器,其包括用于保持含氧酸溶液的储存器和用于接收过氧化物溶液的储存器的入口。 添加过氧化物溶液,使得在含氧酸溶液中形成过氧化物浓度的梯度作为与入口的距离的函数,并且少于全部含氧酸溶液在给定时间与过氧化物溶液反应。 搅拌机构缓慢地消散梯度,使得由于过氧化物和含氧酸之间的反应而形成的任何H 2 SO 5被从高过氧化物浓度区域搅拌离开,从而通过平衡反应阻止H2SO4的分解。 储存器的温度保持在小于或等于20℃
Abstract:
A system to deliver gas/vapor from solid materials. Specifically, the delivery system for the use of gas or vapor released from a solid material, such as a non-aqueous/solid hydrogen peroxide complex. The system is comprised of a delivery system that is configured to receive a plurality of disks containing the solid material and provide these disks into an injector. The injector heats the disks to produce a gas or vapor that is then provided into a chamber. The sterilization process can be done by gas or vapor alone, or in combination with plasma or ultra violet radiation. In particular, a control system automatically induces the delivery system to provide the injector with a disk and then remove the disk once the injection sequence is complete.
Abstract:
A method of making an inorganic salt-hydrogen peroxide complex includes the following steps: (a) mixing the inorganic salt with sufficient water for a time sufficient to form a soft paste, (b) mixing the paste with an aqueous hydrogen peroxide solution to form a hydrogen peroxide-containing paste, and (c) drying the hydrogen peroxide-containing paste. A hydrate method of making Na.sub.4 P.sub.2 O.sub.7.3H.sub.2 O.sub.2 includes the steps of: mixing sodium pyrophosphate decahydrate solid with an aqueous solution of hydrogen peroxide having a concentration of less than 30%, and drying the mixture. Compositions of matter include K.sub.2 HPO.sub.4.3H.sub.2 O.sub.2, KH.sub.2 PO.sub.4.H.sub.2 O.sub.2 Ca.sub.2 P.sub.2 O.sub.7.nH.sub.2 O.sub.2, Ca.sub.2 P.sub.2 O.sub.4.nH.sub.2 O.sub.2, Na.sub.2 SO.sub.4.nH.sub.2 O.sub.2, K.sub.2 SO.sub.4.nH.sub.2 O.sub.2, Na.sub.2 SiO.sub.3.nH.sub.2 O.sub.2 and Na.sub.2 SiO.sub.7.nH.sub.2 O.sub.2.
Abstract:
An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from a substantially non-aqueous organic hydrogen peroxide complex, such as a urea-peroxide complex. Optionally, a plasma can be used in conjunction with the vapor. A method for preparing substantially non-aqueous hydrogen peroxide complexes is also provided. These complexes are useful as a source of peroxide vapor in hydrogen peroxide vapor sterilizers and as a component of self-sterilizing packaging materials.
Abstract:
An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from a substantially non-aqueous organic hydrogen peroxide complex, such as a urea-peroxide complex. Optionally, a plasma can be used in conjunction with the vapor. A method for preparing substantially non-aqueous hydrogen peroxide complexes is also provided. These complexes are useful as a source of peroxide vapor in hydrogen peroxide vapor sterilizers and as a component of self-sterilizing packaging materials.
Abstract:
An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from an inorganic hydrogen peroxide complex. The peroxide vapor can be released at room temperature and atmospheric pressure; however, the pressure used can be less than 50 torr and the temperature greater than 86.degree. C. to facilitate the release of hydrogen peroxide vapor. The heating rate can be greater than 5.degree. C. Optionally, a plasma can be used in conjunction with the vapor.
Abstract:
Production of peroxomonosulphuric acid (Caro's acid) by reaction between concentrated hydrogen peroxide and sulphuric acid solutions can be impaired substantially when substoichiometric amounts of sulphuric acid are employed.The problem is ameliorated or removed by first forming a body of sulphuric acid-rich fluid (usually the smaller volume) and thereafter introducing into that body of fluid the hydrogen peroxide solution (usually the larger volume). The reaction mixture progressively becomes sulphuric acid-lean. The body of fluid is advantageously either concentrated sulphuric acid itself, or a premix formed by reaction between hydrogen peroxide and at least an equimolar amount of sulphuric acid. The process is particularly suitable for making Caro's acid when from 0.02 to 0.5 moles of sulphuric acid is employed per mole of hydrogen peroxide.
Abstract:
A process for obtaining monopersulphuric acid from hydrogen peroxide and sulphuric acid is disclosed. Hydrogen peroxide in the form of an aqueous solution with a concentration ranging from 35 to 100% and either concentrated sulphuric acid or fuming sulphuric acid are added simultaneously to a reaction vessel. The temperature of the reaction is maintained in the range -10*C to +80*C and the supply of the hydrogen peroxide and sulphuric acid to the reaction vessel is controlled so that the generation of the monoperoxysulphuric acid occurs when required and the quantity thereof produced is adjusted according to the quantity thereof required for reaction with another reactant, for example a pollutant, the concentration of the monoperoxysulphuric acid being substantially constant.
Abstract:
A device for mixing and cooling two reactive liquids, comprising a bundle type heat exchanger with parallel tubes, a head space open to one end of all tubes, a first inlet to the head space for introducing a first liquid and a second inlet to the head space with a multitude of nozzles for introducing a second liquid, the nozzles being located within the head space and oriented to direct the introduced liquid transverse to the axis of the tubes of the tube bundle, is useful for making peroxomonosulphuric acid from 85 to 98% by weight sulphuric acid introduced into the first inlet of the device and 50 to 80% by weight aqueous hydrogen peroxide introduced into the second inlet of the device.