7results about How to "Thoroughly oxidized" patented technology

The utility model discloses continuous equipment for preparing an expanded graphite material from a negative electrode of a waste lithium ion battery. The equipment comprises a pickling device, a strong oxidation impurity removal device and a centrifugal device which are sequentially communicated through a pipeline, the grabbing device comprises a track and a mechanical claw which is arranged on the track and can move along the track and move up and down, the track is arranged above the centrifugal device, the drying device and the high-temperature expansion device which are sequentially arranged, and the mechanical claw is used for conveying device materials below the track. The waste graphite negative electrode is safely converted into graphite oxide through the pickling device, the strong oxidation impurity removal device and the centrifugal device, then the graphite oxide is sequentially moved to the drying device from the centrifugal device through the grabbing device, and finally the graphite oxide is converted into high-value porous expanded graphite in the high-temperature expansion device. High-value utilization of low-carbon, efficient, green and sustainable retired lithium ion battery negative electrodes is achieved, and the method is suitable for continuous large-scale production of expanded graphite materials.

The utility model provides a kind of micro-nano ozone oxidation wastewater treatment device, it is related to wastewater treatment technical field, including cabinet, the two sides inner wall of cabinet are uniformly connected with two trapezoidal long plate, the top inner wall of cabinet and the bottom of trapezoidal long plate are equally spaced and installed with ultraviolet lamp, the two side walls of cabinet and located above trapezoidal long plate are all equipped with square hole, the side wall of cabinet and located at square hole are all fixedly connected with ring plate.The utility model in the present application, liquid pump drives wastewater circulation, reciprocating flow in cabinet by liquid suction pipe and liquid outlet pipe, cooperate trapezoidal long plate guide, wastewater spreads on the plate and flows, ultraviolet lamp irradiates from top, plate bottom multidimensional, covers deep layer wastewater, oxidation of refractory substance is more thorough, reflector enhances ultraviolet reflection, driving motor, fan blade accelerates gas-liquid exchange, ozone and wastewater are fully integrated, micro-nano bubble expands reaction interface, improves oxidation efficiency, and COD / TOC removal rate is significantly improved.

The invention discloses a process and a device for preparing m-toluic acid and m-phthalic acid through continuous flow selective oxidation of m-xylene, and the process comprises the following steps: pumping m-xylene and a catalyst solution into a first vertical tubular reactor of a single oxidation reaction module, and introducing oxygen or air to carry out single oxidation reaction; after the reaction is finished, high-purity m-toluic acid is obtained through post-treatment, the yield reaches 93% or above, and the product purity reaches 99%; and switching the outlet of the tubular reactor of the mono-oxidation reaction module to the dual-oxidation reaction module, mixing the reaction liquid after the mono-oxidation reaction is finished with a second stream of catalyst solution, feeding the mixture into a second vertical tubular reactor of the dual-oxidation reaction module for dual-oxidation reaction, and after the reaction is finished, carrying out post-treatment to obtain the product isophthalic acid. The yield reaches 95% or above, and the purity reaches 99% or above; the method is high in reaction controllability, short in reaction retention time, stable in product quality, high in production safety, convenient to operate, high in continuous degree and suitable for industrial production.

The invention provides a battery bottom guard plate production wastewater zero discharge treatment device, and belongs to the technical field of wastewater treatment, a coagulation stirring chamber is arranged at the bottom of an air flotation chamber, a first precipitation chamber is arranged on one side of the coagulation stirring chamber, an adjusting chamber and an oxidizing chamber are arranged on one side of the first precipitation chamber, the oxidizing chamber is arranged at the bottom of the adjusting chamber, and the air flotation chamber is arranged at the bottom of the air flotation chamber. The second precipitation chamber is arranged on one side of the oxidation chamber, the photocatalysis chamber is arranged on the top of the second precipitation chamber, the mixing chamber is arranged on one side of the second precipitation chamber and the photocatalysis chamber, the inclined anoxic chamber is arranged on the tops of the first precipitation chamber, the adjusting chamber, the photocatalysis chamber, the mixing chamber and the third precipitation chamber, and the aeration chamber is arranged on one side of the top of the inclined anoxic chamber. The filter chamber is arranged on one side of the aeration chamber, and the disinfection chamber is arranged on one side of the filter chamber. The device adopts a multi-stage oxidation technology, pollutants are thoroughly oxidized, and the efficiency is high; the degradation is diversified; the device is simple in structure, small in occupied area and convenient to install and operate; and the requirement of zero emission is met.

The present invention relates to a method and equipment for measuring total hydrocarbons in an air separation process by using a carbon dioxide sensor. The present invention uses a catalyst to react hydrocarbons in total hydrocarbons with oxygen to generate carbon dioxide and oxygen in the absence of an open flame, and detects the content of carbon dioxide by using a carbon dioxide sensor, and then reversely calculates the specific amount of hydrocarbons in the total hydrocarbons. Compared with the prior art, the present invention eliminates the use of an open flame, thereby greatly improving safety.

The invention relates to the technical field of sewage treatment and resource utilization, in particular to a method for treating high-calcium coalbed methane produced water and recycling lithium and strontium resources, which comprises the following steps: respectively adding sodium sulfate, hydrogen peroxide, a demulsifier and a flocculant into coalbed methane produced water, respectively reacting, and removing solid impurities through solid-liquid separation after the reaction is finished; effluent is subjected to nanofiltration A treatment, and nanofiltration A produced water and nanofiltration A concentrated water are treated respectively; a treatment method of nanofiltration A produced water comprises the steps of electrolytic oxidation A, high-pressure reverse osmosis and adsorption and desorption; the treatment method of the concentrated water of the nanofiltration A comprises the following steps: carrying out thermogravimetric precipitation, electrolytic oxidation B, resin adsorption and nanofiltration B, respectively carrying out evaporative crystallization on the produced water of the nanofiltration B and the concentrated water of the nanofiltration B to respectively obtain NaCl and strontium chloride, and discharging or recycling condensed water. According to the treatment process method disclosed by the invention, up-to-standard discharge or reuse of the produced water is realized, and byproducts such as calcium, strontium and lithium are separated from the water.

This invention discloses a modular, controllable atmosphere high-temperature oxidation device for the recovery of substandard sponge zirconium, relating to the fields of nuclear fuel cycle and materials technology. The device includes: a furnace body system, comprising, from the outside to the inside, a steel outer shell, a refractory insulation layer, and a detachable furnace liner; multiple independently controlled heating zones arranged along the furnace body axis, each equipped with an independent heating element and thermocouple; an atmosphere control system including nitrogen and oxygen sources, an inert gas source, a mass flow controller, and a mixer; a sealing and cooling system employing a high-temperature sealing ring and a double-layer furnace shell design, with circulating cooling water flowing through the interlayer; and an automatic control system equipped with a temperature-atmosphere-time automated control program for fully automated operation and remote monitoring of the oxidation process. The device provided by this invention can achieve efficient and uniform oxidation treatment of irregular porous sponge zirconium within the range of 500-1000℃, transforming it into zirconium oxide with consistent physical properties.