New Technologies For Heavy Benzol Distillation Separation

Heavy benzol is produced in the take off the heavy tower in the process of crudebenzol refining fractions of>150℃, heavy benzol, deep processing of reasonable andeffective utilization has been heavy benzol processing using one of the major problems.Due to heavy benzol yield little, adopt the intermittent distillation method to extract theeffective components, effective component product recovery rate is low, waste ofenergy, or simply as fuel oil or other chemical additives, not fully recycling, one of theeffective components of heavy benzol efficient recycling is always a difficult problemto a heavy benzol processing technology.This topic for the composition of the heavy benzol with the method of mixed withcoal tar fractions wide distillation to extract the effective components in heavy benzol,through the experimental analysis of heavy fractions of benzene, through experimentalanalysis in a heavy benzol after the change of the coal tar distillate fractions wideproduct quality, determines the weight ratio of benzene in wide fractions, after theheavy benzol mixed into the wide fractions process operating conditions are studied,the heavy benzol in coal tar processing to the corresponding product quality afteranalysis and evaluation, finally determined the heavy benzol mixed into the wide inproportion to the fractions and process operating conditions.Separation by heavy benzol mixed into the wide fractions to extract the effectivecomponents in heavy benzol, through the control of the related process conditions, thecompany production of heavy benzol mixed into fractions of wide distillationseparation, extraction of effective components, after heavy benzol distillationseparation, phenol oil, industrial naphthalene, methylnaphthalene oil three products,the product quality indexes can meet the national standard or enterprise standard.Research results showed that the heavy benzol mixed into the wide fractionsprocessing, is a kind of heavy benzol processing using energy efficient utilization way,solved due to the heavy benzol production is small and not the construction scale, thecontinuous distillation production equipment, has solved the heavy benzol byprocessing the problem of efficient utilization of technical limitations and cannot,opened up a heavy benzol processing using a new kind of high efficient utilization way,is heavy benzol processing and utilization of technological change, extended a newtrain of thought for coking products recycling, the technical development of coalchemical industry has a good reference.