Abstract:

According to the conditions of low efficiency of dephenolization, standard exceeding phenol content in naphthalene, poor neutral oil removing and dewatering results from phenolate, environmental pollution by intermittent phenolate decomposition, easy blockage of continuous phenolate decomposition column, low yield of crude phenolate and so on, crude phenol yield is raised and operation environment is improved through the process and equipment modifications of enlarging the capacity of buffer tank, changing steam source for the stripping process, increasing the packing in the stripping column, replacing the packing in decomposition column, installing agitator in intermittent decomposer and heater in the intermittent scrubber and so on.