3 results about "Relative volatility" patented technology

The utility model discloses a kind of deuterium water distillation preparation devices, belong to deuterium water distillation technical field, comprising: retort, the bottom of retort is fixedly connected with heating layer;Multi-stage pressure control mechanism, be in retort, to, the pressure control in retort, multi-stage pressure control mechanism includes inner tank ring, outer tank ring, two groups of through-hole and pressure control pump.The deuterium water distillation preparation device, by the use of multi-stage pressure control mechanism, can control the pressure inside retort gradually reduce, using boiling point difference amplification effect, the relative volatility of H2O and D2O is improved from 1.01 to 1.05, significantly reduce energy consumption, improve use effect, the deuterium water distillation preparation device, by the use of control mechanism, can operate multi-stage pressure control mechanism to use, and, the whole structure is simple, use same structure, control first sealing ring and second sealing ring respectively rotating, complete closed use, improve flexibility in use process.

This invention discloses a refining process and equipment for high-concentration sulfur dioxide byproducts of chemical production tail gas, relating to the field of chemical tail gas treatment and resource recovery technology. The process includes pretreatment, adsorption and regeneration, extractive distillation, double-effect distillation, and finished product collection. In this invention, micro-oxygen pre-removal utilizes the reaction of sodium bisulfite with oxygen to remove trace amounts of oxygen from the tail gas. Simultaneously, the crystals precipitated from the reaction capture residual micron-sized acid mist, blocking the sulfite oxidation side reaction at its source and preventing equipment scaling and clogging. Gradient reverse adsorption changes the gas flow direction, matching different concentrations of impurities to corresponding adsorbents, achieving synchronous saturation of each adsorption layer and improving adsorbent utilization. Pressure swing extractive distillation sets different pressure ranges within a single tower to increase the relative volatility of carbon disulfide and sulfur dioxide, enhancing the separation of difficult-to-separate impurities. Finally, a four-stage separation system is constructed to remove impurities of different properties at each stage for progressive depth removal.

The application discloses a limonene extraction agent in tire pyrolysis oil, wherein 30-60wt% p-aminoacetanilide and 40-70wt% quinoline are contained in the extraction agent; the extraction agent changes the interaction force between substances by itself group, and then changes the relative volatility between key components, so that the limonene product can reach more than 95% of industrial grade purity, and the yield of the limonene product also reaches more than 85%.