20results about "Chlorine dioxide" patented technology

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.

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

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.

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.

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.

Disclosed are a chlorine dioxide sustained-release product, and a preparation method therefor and a use thereof, relating to the technical field of chlorine dioxide gas sustained-release materials. The chlorine dioxide sustained-release product comprises a main structure and a film. The main structure comprises a solid colloid and chlorine dioxide generating powder. Gaps between at least some adjacent particles of the chlorine dioxide generating powder are filled with the solid colloid to perform solid separation, encapsulation, and fixation on the particles of the chlorine dioxide generating powder between which the gaps are formed. The film encapsulates at least part of the surface of the main structure. When coming into contact with water vapor, the sustained-release product can not only ensure the concentration constraints required for starting material reaction but also enable the reaction to be uniform, slow, stable, and long-acting, achieving long-term stable synthesis and release of chlorine dioxide in air and water at room temperature, thereby filling the gap in long-term sustained release and synthesis of chlorine dioxide monomer products in water. In addition, the preparation method for the chlorine dioxide sustained-release product is simple and can achieve large-scale production.

This invention relates to a method for generating chlorine dioxide gas in a sustained-release manner over a long period of time without generating dangerous high-concentration gases. By using the sustained-release chlorine dioxide gas generation method of this invention, chlorine dioxide gas can be produced at low concentrations without harming bees for infection control of bee colonies, and the purpose of disinfection can be achieved over a long period of time, until the bee colony changes.

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

Disclosed are systems, apparatus, and methods for accelerating the generation of chlorine dioxide gas by rotating a member such as a puck, tablet, or pouch of reactant such as sodium chlorite in an acidic solution that will cause and help accelerate a reaction to generate chlorine dioxide gas.

A porous matrix substrate that has chlorite reactant distributed therein can be used to produce gaseous chlorine dioxide. Ozone-containing gas can pass through the porous matrix substrate and the ozone can react with the chlorite to produce chlorine dioxide.

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, wherein chlorine is also added to the body of water.

The invention discloses a slow-release chitosan / sodium alginate gel film as well as a preparation method and application thereof. According to the method, chitosan is adopted as a matrix to embed citric acid, sodium alginate is adopted as a matrix to embed sodium chlorite, then a chitosan-citric acid / sodium alginate-sodium chlorite composite gel film is prepared through a layered electrostatic deposition technology, and the novel postharvest normal-temperature preservation method for the vegetable soybeans is obtained. When the chitosan-citric acid / sodium alginate-sodium chlorite composite gel film is applied to normal-temperature storage of harvested vegetable soybeans, the chitosan-citric acid / sodium alginate-sodium chlorite composite gel film has antibacterial and antioxidant effects and has the characteristic of delaying release of chlorine dioxide.

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.

An efficient cyclic process and related method for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions in open recirculating systems under alkaline pH conditions. The cyclic process provides enhanced inactivation of microbiological organisms while significantly reducing cost and improving safety.

Apparatuses for generation of a gas, for example chlorine dioxide, methods of forming an apparatus, and methods of use thereof are provided. The apparatus may include at least one pouch composed of a hydrophobic material and a reactant disposed within the interior of the pouch. The reactant generates a desired gas in the presence of an initiating agent.

Methods of manufacturing a light-activated powder are provided which provide solid-state generation and release of chlorine dioxide without detectable amounts of any toxic by-products such as chlorine gas, chlorites, or chlorates. The powder need not be exposed to moisture, relative humidity, or an acid before or during exposure of the powder to visible light to generate the 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.