60results about "Chlorine dioxide" patented technology

The invention relates to the technical field of disinfectants, in particular to a production method of a low-corrosion chlorine dioxide disinfectant, which comprises the following steps: dropwise adding a sodium hydroxide solution, monitoring the pH value, adjusting the pH value to 8-10, maintaining stirring for 5 minutes, checking solubility and temperature, collecting precipitate particles, and filtering to remove the precipitate particles to obtain an alkaline mixed solution. According to the invention, the pH value is monitored and regulated to an alkaline interval to execute solubility inspection, so that the property control of the mixed solution is realized; on the basis of combined treatment of nanometer titanium dioxide photocatalysis and radio frequency discharge, the content of free radicals is multiplied, and the oxidation activity is improved; a silane coupling agent is combined to treat nano zirconium oxide and put into a system, the temperature is adjusted, the dispersion state is monitored, and the dispersion stability is guaranteed; the pH value and the oxidation-reduction potential are continuously monitored, foam separation and the chlorine content are controlled, and the quality of an intermediate solution is ensured; regulating and controlling the adding amount and the pH value of hydrochloric acid, monitoring gas escape, and screening out impurities to obtain a high-purity isolate.

The invention discloses a chlorine dioxide generating device, which comprises a plurality of storage tanks, a plurality of gas-liquid separation devices, a gas-liquid separation device, a gas-liquid separation device and a gas-liquid separation device, the first-stage reaction chamber is respectively connected with the plurality of storage tanks through a plurality of metering pumps by virtue of pipelines, and / or the second-stage reaction chamber is respectively connected with the plurality of storage tanks through a plurality of metering pumps by virtue of pipelines; the diluter is used for diluting a diluent and a high-concentration chlorine dioxide solution generated in the first-stage reaction chamber and / or the second-stage reaction chamber in proportion to generate a chlorine dioxide solution; the controller is electrically connected with the first-stage reaction chamber and / or the second-stage reaction chamber, the controller controls the metering pump connected with the first-stage reaction chamber and / or the metering pump connected with the second-stage reaction chamber to be started according to the target chlorine dioxide yield, and the raw materials in the storage tank are conveyed into the first-stage reaction chamber and / or the second-stage reaction chamber to generate chlorine dioxide. And controlling the diluter to dilute and mix the chlorine dioxide and the diluent to generate a chlorine dioxide solution. The multi-stage reaction chambers are designed, so that the controller can switch the connection modes according to the target yield, the requirement of high-efficiency production can be met, and the requirement of high yield can also be met.

A method is provided for producing a light-activated powder that provides solid-state generation and release of chlorine dioxide without detectable amounts of any toxic by-products such as chlorine gas, chlorite, or chlorate. The powder does not need to be exposed to moisture, relative humidity, or acid before or during exposure of the powder to visible light to generate gas. The powder can also be prepared under conditions that minimize or prevent decomposition or oxidation of sodium chlorite, or premature light activation of the powder during the manufacturing process to maximize its activity.

To provide a method for manufacturing a new germicidal disinfectant from sodium hypochlorite degraded during storage.SOLUTION: A method for manufacturing a new germicidal disinfectant from a solution including hypochlorite ion, chloric ion, and chloride ion, includes: a first reaction process of adding sulfuric acid to the solution and generating chlorine gas; a process of reacting the chlorine gas generated in a recovery liquid A with sodium hydroxide or calcium hydroxide and recovering it as hypochlorite ion; a second reaction process of adding sulfuric acid having higher concentration than that in the first reaction process to a reaction mother liquid after the first reaction process and generating chlorine dioxide gas; a process of reacting the generated chlorine dioxide gas with sodium hydroxide and hydrogen peroxide in a recovery liquid B and recovering it as chlorous acid ion; and a process of blending the recovery liquid A with the recovery liquid B to obtain the new germicidal disinfectant.SELECTED DRAWING: None

A device for generating and dispersing chlorine dioxide which includes a housing, at least one removeable tray having a plurality of compartments contained within an interior of the housing, and a fan in communication with the interior of the housing and the exterior of the housing for directing a current of chlorine dioxide gas that is generated from chemicals that are positioned within the removeable tray(s).

The present invention relates to a method for generating chlorine dioxide gas in a sustained-release manner for a long period of time without generating dangerous high-concentration gas. When the slow-release chlorine dioxide gas generation method according to the present invention is used, the purpose of long-term disinfection can be achieved by generating chlorine dioxide gas at a low concentration until alternating swarms without hurting bees in order to manage the infection of swarms.

To provide a new method capable of easily sterilizing spores with high safety.SOLUTION: A radical manufacturing method includes a treatment step of irradiating a radical generating source with light, generating a radical, and treating spores with the radical, wherein a peak wavelength of the irradiation light in the light irradiation exceeds a UV wavelength and is 600 nm or less. A spore sterilization method includes a treatment step of irradiating a radical generating source with light, generating a radical, and treating spores with the radical, wherein a peak wavelength of the irradiation light in the light irradiation exceeds a UV wavelength and is 600 nm or less. The peak wavelength is, for example, 405 to 470 nm.SELECTED DRAWING: None

This invention provides a method for preparing chlorine dioxide gas, belonging to the technical field of disinfectant preparation. The method involves adding an acidic solution and / or sodium persulfate solution to a solid preparation containing chlorite, conducting a redox reaction to obtain chlorine dioxide gas. The addition rate of the acidic solution and / or sodium persulfate solution is ≤0.8 mL / min; the solid-liquid ratio of the solid preparation containing chlorite to the acidic solution and / or sodium persulfate solution is 4–6 g: 8–15 mL. This invention controls the generation rate of chlorine dioxide gas by controlling the quantitative and rate-controlled liquid addition, avoiding spontaneous combustion caused by excessively high chlorine dioxide concentrations. Simultaneously, it maintains an excess solid state in the reaction system, reducing the dissolution of chlorine dioxide gas and improving the preparation efficiency of chlorine dioxide gas.

The present invention relates to a generation method for generating chlorine dioxide gas in a sustained manner over a long period of time without generating dangerously high concentrations of gas. When using the sustained-release chlorine dioxide gas generation method of the present invention, chlorine dioxide gas can be produced at a low concentration without damaging bees for infection control of bee colonies, thereby achieving the purpose of long-term disinfection until a colony is replaced.

This invention discloses a method for catalytically activating chlorite to produce chlorine dioxide. Driven by external force, a polymer with piezoelectric, hydrophobic, and electron-withdrawing properties is used as a catalyst to catalyze the activation of chlorite to produce chlorine dioxide. The advantages of this invention are that it can generate piezoelectric catalysis derived from force-electroelectric coupling and contact-induced electrocatalysis, promoting charge separation and transfer. The positively charged layer formed on the polymer surface can exchange electrons with chlorite ions, i.e., steal their electrons, thereby forming chlorine dioxide. Simultaneously, due to the force-electroelectric coupling effect, it can also generate reactive species such as hydroxyl radicals and superoxide radicals.

A method of disinfecting a body of water comprising the steps of: adding sodium chlorite and / or sodium chlorate to the body of water, and, converting the sodium chlorite and / or sodium chlorate to chlorine dioxide in an electrolytic cell in fluid communication with a water circulation system of the body of water.

Disclosed herein are methods of producing a gas at a controlled rate, the methods comprising directing air through a layered bed to produce a gas. The layered bed comprises alternating layers of a layer of dry particles comprising a precursor and a layer of dry particles comprising a proton-generating species. The gas is produced at a rate that is controlled by controlling the presence or absence of air flowing though the layered bed, the amount of time the air flows through the layered bed, the total number of layers in the layered bed, the average thickness of each of the layers of dry particles comprising the precursor in the layered bed, the average thickness of each of the layers of dry particles comprising the proton-generating species in the layered bed, the temperature the method is performed at, or a combination thereof.

The invention provides a preparation device and method of pure chlorine dioxide liquid and a storage method, and relates to the field of chemical pharmacy preparation, in particular to a chlorine dioxide injection precursor. The device comprises a reaction chamber and a freezing chamber communicated with the reaction chamber, and chlorine dioxide gas generated in the reaction chamber is conveyed into the freezing chamber to be directly liquefied, so that high-purity chlorine dioxide liquid is obtained. The invention solves the problems of inaccurate concentration control, insufficient stability, difficulty in meeting medicine quality management specifications and the like in the production process of the pure chlorine dioxide liquid in the prior art, and provides the stable and controllable preparation device and method of the pure chlorine dioxide liquid meeting the medicine quality requirements. The preparation method is particularly suitable for preparing and storing precursor liquid of the chlorine dioxide injection, and meets the medicine quality management standard.

The present invention relates to a generation method for generating chlorine dioxide gas in a sustained manner over a long period of time without generating dangerously high concentrations of gas. When using the sustained-release chlorine dioxide gas generation method of the present invention, chlorine dioxide gas can be produced at a low concentration without damaging bees for infection control of bee colonies, thereby achieving the purpose of long-term disinfection until a colony is replaced.

Chlorine dioxide compositions and methods of using the chlorine dioxide compositions on animal skin are disclosed. The chlorine dioxide compositions are formed by mixing an acidic composition and a chlorite salt composition together. The acidic composition includes an acid and an aldehyde.

The invention relates to an apparatus and a method for producing a fluid product, for example a fluid reaction product. The invention comprises a reaction chamber and a receiving chamber and a control unit configured to control the flow of fluid into the reaction chamber through the one or more fluid connections. The invention further comprises a first quantity sensor and a second quantity sensor arranged to continuously or at least quasi-continuously determine the quantity of fluid components of the reaction chamber and the receiving chamber at least during the introduction of the fluid components.

Provided is a chlorine dioxide generation device (X) in which chlorine dioxide gas is generated by mixing, in a solvent in a container (1), a chlorite salt, an acidic substance that reacts with the chlorite salt to generate chlorine dioxide gas, and a buffer action substance that is a salt or conjugate base thereof that buffers the acidic substance.

The apparatus 10 comprises a mixing funnel 24 comprising a reaction chamber (58, figure 4), an inlet region (60, figure 4) , and an outlet region comprising at least one restriction orifice 72. Whilst

There is disclosed a method of forming chlorine dioxide comprising passing chlorous acid through a membrane including a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid. There is also disclosed a membrane suitable for forming an aqueous solution of chlorine dioxide comprising a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid or alkali metal chlorite.

The invention refers to the field of biocides and refers to an aqueous chemical composition that comprises hypochlorous acid and chlorine dioxide. It also refers to a method for manufacturing hypochlorous acid for obtaining the chemical composition and to an installation to perform the method. The installation comprises a first reactor (RNK), an acid reactor (RAK), in which an acid composition is mixed with an aqueous solution coming from the first reactor (RNK), and a basic reactor (RBK), in which a basic composition is mixed with an aqueous solution coming from the first reactor (RNK). The solution obtained in the basic reactor (RBK) is mixed with the solution obtained in the acid reactor (RAK) to form a mixed solution, which is discharged into the first reactor (RNK).

The present invention related to a method to optimise the chemical balance at a sulfate pulp mill, which produces at least pulp bleached with chlorine dioxide and has a chlorine dioxide plant using at least chlorate, methanol and sulfuric acid for making chlorine dioxide. The method comprises at least the following steps: a), gases from the mill's concentrated non-condensable gas system are incinerated in order to form a gas containing sulfur dioxide, which is treated to produce concentrated sulfuric acid, and b), raw methanol from the mill processes is purified to produce methanol, and c), side streams containing sodium compounds and / or sulfur compounds produced by mill processes are used as make-up chemicals, wherein the production of chlorine dioxide uses the sulfuric acid produced in step a) and methanol purified in step b), with a sulfuric acid concentration of 94-99%, preferably 95-98%, and using in step c) sesquisulfate or sodium sulfate produced during the production of chlorine dioxide.

In order to overcome the problems of crystal blockage and insufficient conversion rate in the existing chlorine dioxide preparation scheme, the invention provides composite chlorine dioxide gas preparation equipment which comprises a front reactor and a main reactor, the front reactor is provided with a front reaction cavity, and the front reaction cavity is used for accommodating a reaction solution of a sodium chlorate solution and hydrochloric acid, so that separated sodium chlorate crystals are deposited in the reaction solution and are subjected to reaction digestion; and the main reactor is used for receiving the gas-liquid mixture without crystal precipitates, which is guided out by the front reactor, so as to continue the reaction. Meanwhile, the invention also discloses a preparation method of the composite chlorine dioxide gas. The composite chlorine dioxide gas preparation equipment provided by the invention thoroughly solves the problem that crystal precipitates are deposited in filler gaps of the main reactor and block the main reactor, greatly improves the utilization rate of raw materials, breaks through the bottleneck of low conversion rate (less than or equal to 50%) of the existing equipment, and achieves the final conversion rate of 90% or above.

An apparatus is disclosed for preparing a liquid formulation using a two-part system including a first part containing a first reagent and a second part containing a second reagent, which react to form an active ingredient of the liquid formulation when the first and second reagents are mixed. The apparatus comprises a reaction chamber (58), a mixing funnel (24) having an inlet area (60) for admitting a quantity of the first part and a quantity of the second part into the reaction chamber, e.g., from a dispensing capsule, to form a reagent mixture in the reaction chamber in use, an outlet (72) with at least one restricted orifice for releasing the reagent mixture from the reaction chamber at a controlled rate, and a primary chamber configured to receive the reagent mixture from the reaction chamber via the restricted orifice.

The application belongs to the technical field of chlorine dioxide production, and particularly relates to a chlorine dioxide multi-point positive pressure adding system. In the chlorine dioxide adding process, the control system cannot obtain stable liquid level signals, and thus cannot accurately control the start-stop and frequency of the metering pump, finally leading to unstable chlorine dioxide adding amount, affecting the disinfection effect. The following scheme is proposed, which comprises supporting legs, the supporting legs are fixedly connected with buffer tanks, and the buffer tanks are internally provided with a disturbance preventing module. The chlorine dioxide multi-point positive pressure adding system disclosed by the application fundamentally solves the problems of unstable liquid level signals and poor adding amount control precision caused by liquid surface disturbance of the traditional negative pressure adding system, realizes stable and accurate multi-point adding under positive pressure conditions, and simultaneously, the integrated efficient gas purification system and double insurance liquid level monitoring mechanism further improve the environmental protection, safety and reliability of the system.

A method of sanitising a body of water including the steps of adding sodium chlorite and / or sodium chlorate to the body of water and converting the sodium chlorite and / or sodium chlorate to chlorine dioxide in an electrolysis cell which is in fluid communication with a water circulation system of the body of water.

The invention relates to the technical field of chlorine dioxide preparation, in particular to an energy-saving comprehensive method chlorine dioxide preparation system which comprises a sodium chloride electrolysis unit, a hydrochloric acid synthesis unit, a chlorine dioxide generation unit, a chlorine dioxide absorption unit, a hydrogen supply unit and an energy conversion unit. And the hydrogen supply unit is connected with the energy conversion unit through a pipeline and is used for conveying at least part of hydrogen by-produced by the sodium chloride electrolysis unit to the energy conversion unit. Partial hydrogen generated by the sodium chloride electrolysis unit is utilized, chemical energy of hydrogen fuel is directly converted into electric energy through the energy conversion unit, the electric energy is used as an emergency power supply after normal power supply interruption of sodium chloride electrolysis and a chlorine dioxide workshop, the electricity demand of the chlorine dioxide preparation system for external electricity can be reduced, and the energy consumption is reduced. The system configuration of the workshop emergency power supply is reduced, the operation cost is reduced, energy is saved, and no new pollution is generated.

A method of sanitising a body of water including the steps of adding sodium chlorite and / or sodium chlorate to the body of water and converting the sodium chlorite and / or sodium chlorate to chlorine dioxide in an electrolysis cell which is in fluid communication with a water circulation system of the body of water.