53results about How to "Easy to realize large-scale industrial application" patented technology

The invention relates to a CO2 emission reduction technology and aims at providing a method and device for preparing CO and H2 by thermochemical cycle decomposition of CO2 and H2O. According to the method, H2O, I2 and SO2 are fed into a Bunsen reaction device to perform a spontaneous exothermic reaction; CO2 gas is introduced to a fixed bed or a fluidized bed reactor and performs an exothermic reaction with metal Zn or Ni; and products in various reaction process are recycled by various reaction devices and final products are H2, CO and O2. The highest heat source temperature of the device is lower (less than 900DEG C) and other various forms of heat sources such as solar energy and nuclear energy can be used; the negative influence caused by incomplete reaction of Zn and CO2 is reduced to a certain degree; and the reaction temperature is proper and the scale industrial application is easily realized.

The invention discloses a method of recycling zinc, manganese, lead and silver from zinc electrowinning anode mud. The method comprises the following steps of: after carrying out wet ball grinding on the zinc electrowinning anode mud, filtering, wherein filtrate is taken as a raw material for a zinc smelting system; mixing filter residues and acidic solution, adding a reducing agent to carry out reduction reaction, leaching manganese, filtering to obtain leaching liquid and leaching slag, purifying the leaching liquid, and preparing manganese dioxide through an electrolysis method; and recycling lead and silver with the leaching slag as high-lead slag and a raw material of a lead smelting system. The method, provided by the invention, has the characteristics of less investment, simple process, low cost, easiness in operation and the like; the whole process is a green metallurgical process flow, and is environmental-friendly, the comprehensive recovery and utilization efficiency of resources can be effectively improved, the battery-level manganese dioxide obtained by electrolysis is taken as a new energy material so as to be beneficial for environmental protection and high value-added utilization of resources. The method is easy to realize large-scale industrial application.

The invention relates to the field of CO2 emission reduction and thermochemical hydrogen production and aims to provide a method and a device for preparing H2 and coproducing H2SO4 through thermochemical cycle mineralization of CO2 during decomposition of H2O. A Bunsen reaction device is connected with a liquid phase separation device which is connected with a HIx concentration device and a H2SO4concentration device, the HIx concentration device is connected with the Bunsen reaction device and a Mg12 generation reactor which is connected with a Mg12 distillation device, the Mg12 distillationdevice is connected with the Bunsen reaction device and a Mg12 hydrolysis carbonation reactor which is connected with a HI catalytic decomposition reactor, and the HI catalytic decomposition reactor is connected with the Bunsen reaction device. CO2 mineralization technology and hydrogen production through thermochemical sulfur-iodine open cycle decomposition of water are organically combined creatively, and CO2 is mineralized and fixed in mild reaction conditions while H2 and H2SO4 with high added value are coproduced; hydrogen production cycle and mineralization technology are organically combined, so that higher theoretical heat efficiency is realized; the method is proper in reaction temperature and easy for large-scale industrial application.

The invention relates to the field of CO2 discharging reduction and thermochemical hydrogen production, and aims to provide a method and device for preparing H2 by simultaneous thermochemical cycle mineralization of CO2 and decomposition of H2O. A Bunsen reaction device is connected with a liquid phase separation device; the liquid phase separation device is connected with a HIx concentration device and a H2SO4 concentration device respectively; the H2SO4 concentration device, a concentrated H2SO4 catalytic decomposition device and the Bunsen reaction device are connected in sequence; the HIxconcentration device is connected with the Bunsen reaction device and a MgI2 generation reactor; the MgI2 generation reactor is connected with a MgI2 distillation device; the MgI2 distillation deviceis connected with the Bunsen reaction device and a MgI2 hydrolytic carbonation reactor; the MgI2 hydrolysis carbonation reactor is connected with an HI catalytic decomposition reactor; and the HI catalytic decomposition reactor is then connected with the Bunsen reaction device. According to the device, a CO2 mineralization technology and thermochemical sulfur-iodine open-cycle water decompositionfor hydrogen production are organically combined creatively; CO2 is mineralized and fixed under a relatively mild reaction condition, and H2 with a high additional value is co-produced; and an HI-I2 rectification process in a traditional hydrogen production cycle is avoided, and higher heat efficiency is achieved.

The invention relates to an electrocatalyst for a proton exchange membrane fuel cell, which is a catalyst that carries a hollow spherical binary platinum-based alloy on a carbon carrier, and the wall of the hollow sphere has holes through the wall; the nano-particles of the binary platinum-based alloy PtxMy The atomic ratio of x and y distribution is: x:y=10:1~1:1, the mass content of Pt in the supported catalyst is 10~40%; the second metal M is Pd, Fe, Ni or Cu. Compared with the prior art, the platinum-based alloy catalyst nanoparticles prepared by the present invention have good dispersion and uniform particle size; the structure and shape of the catalyst can be controlled by using a complexing agent and an etchant; the preparation method of the electrocatalyst is simple and reliable. Good controllability, aqueous phase reaction system and mild preparation conditions make this method not only save energy, but also reduce manufacturing cost, and it is easy to realize large-scale industrial application.

The invention belongs to the technical field of hydrometallurgy and relates to a method for separating chromium and iron and aluminum in a sulfuric acid system solution containing chromium, iron and aluminum. The method comprises the following steps: 1) adding an oxidizing agent for pretreatment; 2) adjusting the solution to a specific pH value, adding phosphate and reacting at a specific temperature to obtain iron-aluminum phosphate composite precipitation and filtrate mainly composed of iron phosphate; 3) Adjust the filtrate to a specific pH value, add phosphate again and react at a specific temperature to obtain iron-aluminum phosphate composite precipitation mainly composed of aluminum phosphate and chromium sulfate solution to complete the separation of chromium and iron-aluminum. The method has short flow, simple operation, and is easy to be applied on a large scale; adopting the step-by-step precipitation method of phosphate has strong selectivity and ideal separation effect; the recovery rate of metal chromium is greater than 98%, and the economic benefit is remarkable; the whole separation process No chemical substances that may cause harm to the environment are used, which meets the requirements of green environmental protection.