4results about How to "Guaranteed dwell time" patented technology

This invention relates to an enhanced denitrification device, specifically an enhanced denitrification device using a combined electrolysis-microelectrolysis-anaerobic process, comprising a denitrification container and an external power supply. The inner cavity of the denitrification container is divided into a wastewater treatment zone and an anaerobic water collection zone by a water collection control grid. The wastewater treatment zone has an inlet at the top, and the water collection control grid has a water collection outlet connecting the wastewater treatment zone and the anaerobic water collection zone. The anaerobic water collection zone has a sludge discharge outlet and a water outlet on its side. The wastewater treatment zone is filled with iron-carbon microelectrolysis packing material. Several electrode plates are also spaced apart within the wastewater treatment zone, with anode and cathode plates alternating. The anode plates are connected to the positive terminal of the external power supply, and the cathode plates are connected to the negative terminal of the external power supply. Compared with existing technologies, this invention solves the problems of high energy consumption in external power supply-driven electrolysis and limitations of iron-carbon microelectrolysis in existing technologies, achieving a combined use of external power supply electrolysis and iron-carbon microelectrolysis, providing enhanced denitrification capability for wastewater with a low carbon-to-nitrogen ratio and lower energy consumption.

The present application relates to the technical field of wastewater treatment device, specifically, disclose a kind of wastewater purification treatment device for phosphate production, it include: main body, first interception pipe and second interception pipe being interconnected, staggeredly installed in main body;By magnetic mutual attraction, stirring component and guide component, wherein, stirring component is movably placed in first interception pipe and second interception pipe, for stirring wastewater;Guide component is outside first interception pipe and second interception pipe, can be along the circulation movement of the distribution path of first interception pipe and second interception pipe;Driving assembly is used to drive guide component;Evaporation assembly is used to input water vapor into main body;Guide component can drive stirring component to move, improve the flow efficiency of wastewater in first interception pipe and second interception pipe, also can clean the inner wall surface of first interception pipe and second interception pipe, ensure the cleanliness of inner wall surface.

The application discloses a kind of synergistically processing large wind volume low concentration waste gas and small wind volume high concentration waste gas incineration system and its operating method, in the method, high concentration waste gas and low concentration waste gas are not premixed in advance, set up separate incineration chamber for processing high concentration waste gas, incineration chamber is not set up regenerative bed, built-in burner, burner is high concentration waste gas as fuel, with low concentration oxygen-containing waste gas as combustion-supporting wind.Set up three regenerative incineration chambers for processing low concentration waste gas, each regenerative incineration chamber inlet and outlet are provided with lift valve, when normal operation, the opening and closing of each lift valve is controlled by time sequence, one is as air inlet chamber, one is as air outlet chamber, one is as purging chamber.In this way, it is ensured that all waste gas can be discharged up to standard, and the safety and cost optimization of operation process are ensured.The safety hazard and high energy consumption problems existing when traditional RTO technology simultaneously processes high concentration and low concentration waste gas are solved.

The present application provides a hydroformylation reaction device, a hydroformylation reaction method and application thereof. Under the hydroformylation condition, vinyl acetate and synthesis gas are reacted in a first reaction unit, the obtained liquid phase is cooled and then returned to the first reaction unit, the remaining part is sent to a second reaction unit for continuous reaction with another synthesis gas, the liquid phase obtained by the continuous reaction is sent to a gas-liquid separation unit, the separated synthesis gas is discharged, the liquid phase is sent to a separation unit for separation, the catalyst, the crude product and the solvent are separated, and the catalyst and the solvent are circulated back to the first and second reaction units respectively. The hydroformylation reaction method provided by the present application can control the return amount of the catalyst and the solvent and respectively regulate the catalyst concentration of the two reaction zones, so as to ensure the residence time and the reaction effect.