100results about How to "With self-cleaning effect" patented technology

The invention relates to a spiral plate fixed bed reactor for gas-solid phase contact catalytic reaction, comprising inlets and outlets of a gas phase and a heat exchange medium. The reactor has a plurality of spiral plate fixed bed reaction sections inside. Each spiral plate fixed bed reaction section consists of two spiral passages formed by rolling two parallel metal sheets, wherein one of thepassages has two axial ends which are not sealed, and is filled with a catalyst to form a fixed bed layer, with the upper end (or lower end) of the bed layer being communicated with the gas inlet, andthe lower end (or the upper end) being communicated with the gas outlet; gas enters the reactor through the inlet, passes through the catalyst fixed bed layers axially section by section and is reacted and then is discharged from the gas outlet; the other passage has sealed axial two ends and is adopted as a heat exchange medium passage; the heat exchange medium flows through the spiral passage and exchanges heat through the plate wall, and is discharged out of the reactor though the heat exchange medium outlet after heat exchange is finished. The reactor has a significantly increased shell-side heat exchange coefficient, so that the total heat transfer coefficient is increased, the heat transfer effect is enhanced, and the heat transfer temperature difference is reduced.