After the copper liquid absorbs carbon monoxide, carbon dioxide and hydrogen sulfide in the gas, it flows out from the bottom of the gas, is depressurized by a pressure reducing valve, and is sent to the bottom of the reflux tower, and the regenerator which is sprayed down and desorbed by the regenerator meets countercurrently. The copper liquid exits the reflux tower from the bottom of the lower heater into the column tube, is indirectly heated by the critical hot copper liquid, goes up the riser tube, enters the intermediate reducer and enters the upper heater.
The tubular reactor is a continuously operated reactor having a tubular shape and a large aspect ratio. Among them: the tubular heat exchanger has large heat transfer area, good heat transfer effect, easy control of catalyst bed temperature, fast reaction rate and high selectivity, but the disadvantage is that the structure is complicated, the equipment cost is high, and it can be applied to the thermal effect. reaction. Multi-tube parallel-structured tubular reactors are generally used for gas-solid phase reactions, such as gas phase HCl and acetylene in a reactor in which multiple tubes are connected in parallel with a solid phase catalyst to produce vinyl chloride.
The Venturi absorber is simple in structure, small in equipment, small in space, high in gas velocity, large in processing capacity, good in gas-liquid contact, and easy in mass transfer. It is especially suitable for trapping tiny particles in airflow. However, due to the co-current of gas and liquid, the gas-liquid contact time is short, and it is not suitable for gas-liquid absorption which is difficult to dissolve or slow in reaction rate, and the pressure loss is large (800 to 9000 hours), and the energy consumption is high.
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