3 results about "Trichloroethylene" patented technology

The invention relates to the technical field of trichloroethylene recovery, and aims at solving the problems that the trichloroethylene recovery devices in the prior art have difficulty in conveniently collecting and separating a miscible material of asphalt and trichloroethylene and are environment-hostile. The invention provides a trichloroethylene recovery device and a trichloroethylene recovery method. The trichloroethylene recovery device comprises a raw material vessel, a heating device and a condensing device, wherein the condensing device comprises a condensing plate and a guide plate, the condensing plate is covered above the opening of the raw material vessel, the guide plate is separately opposite to the condensing plate and positioned below the condensing plate; the guide plate is provided with a gas flow port communicating the raw material vessel with the lower end surface of the condensing plate; the guide plate is obliquely arranged; and the trichloroethylene recovery device is also provided with a liquid trichloroethylene delivery port. The trichloroethylene recovery device has the beneficial effects of treating and separating the miscible material of asphalt and trichloroethylene in time, utilizing trichloroethylene repeatedly many times, reducing experimental cost, and avoiding pollution of water and air due to disorderly emission.

The invention discloses a ternary metal catalyst with excellent chlorine resistance and efficient catalytic oxidation of mixed VOCs, and belongs to the field of catalytic chemistry and nano science. The preparation method comprises the following steps: firstly, synthesizing ternary metal catalyst nanoparticles by adopting a solvothermal method, then loading the obtained nanoparticles on a TiO2 carrier by adopting an adsorption method, and finally centrifuging, drying and roasting to obtain the PtWM/TiO2 (M = Ru, Cr and Mn) catalyst, thereby finally achieving the excellent chlorine resistance to chlorine-containing VOCs, namely trichloroethylene (TCE) and the efficient catalyst for co-catalytic oxidation of toluene and TCE. The preparation process is simple, and the obtained PtWM/TiO2 (M = Ru, Cr or Mn) catalyst has high acidity, good chlorine resistance and excellent catalytic activity for co-catalytic oxidation reaction of toluene and trichloroethylene.