2 results about "Hexachlorobenzene" patented technology

The application discloses a kind of magnetic nano-enzyme microspheres and preparation method and application thereof, belong to the cross technical field of material, drug, rapid detection etc..The magnetic nano-enzyme microspheres take Fe3O4 microspheres as core, and platinum nanoparticles are in situ grown after being coated with dendritic mesoporous silica on the surface.The magnetic nano-enzyme microspheres of the application utilize magnetic response separation, high load content and enzyme catalytic amplification, greatly improve the detection sensitivity and signal strength, and are suitable for high-sensitivity detection of trace chloramphenicol and hexachlorobenzene.The qualitative detection cutoff value of chloramphenicol is 0.1 ng / mL, and the quantitative detection sensitivity is 0.0011 ng / mL.The quantitative detection sensitivity of hexachlorobenzene is 0.4 ng / mL.

The invention belongs to the technical field of organic chemistry, and particularly relates to a separation and recovery method of a mixed solution. In order to solve the problem of high energy consumption of a rectification separation mode in the prior art, the invention provides a separation and recovery method of a mixed solution, which comprises the following steps: transferring the mixed solution containing tetrachloroethylene, hexachloroethane, hexachlorobutadiene and hexachlorobenzene into a melt crystallizer, and carrying out programmed cooling by using the melt crystallizer until the temperature of the mixed solution is 25-100 DEG C, so as to obtain a mixed solution containing tetrachloroethylene, hexachloroethane, hexachlorobutadiene and hexachlorobenzene; solidifying the high-melting-point substance in the mixture onto a crystallizer to obtain a product crystal; transferring the liquid phase as residual liquid into a residual liquid tank; raising the temperature to 185-190 DEG C to sublimate and condense hexachloroethane to form hexachloroethane crystals; heating the remaining product crystals to 220-230 DEG C for melting, and discharging the remaining product crystals into a product tank to obtain a hexachlorobenzene solution; and carrying out rectification separation on the residual liquid to obtain a tower top light component tetrachloroethylene product and a tower bottom heavy component hexachlorobutadiene product. The highest operation temperature is 250 DEG C or below, and the energy consumption is low.