METHOD FOR PRODUCING BUTADIENE BY OXIDATIVE DEHYDROGENATION OF N-BUTENES BY MONITORING THE PEROXIDE-CONTENT DURING PRODUCT PROCESSING

摘要

the present invention: A) a feed gas containing n- butene oil animals ( comprising the steps of: a) providing; B) the feed gas oil animals containing n- butene (a) and an oxygen-containing gas is supplied to the at least one dehydrogenation zone to form the butadiene by the oxidative dehydration digest n- butene, butadiene, butene, unreacted n- , to obtain water vapor, oxygen, low-boiling hydrocarbons, optionally the product gas oil animal (b) containing a carbon oxide and optionally an inert gas; C) the product gas oil animal (b) sikimyeo and cooling at least one cooling stage and at least one compression stage compression, wherein contacting the product gas oil animal (b) a refrigerant supplied to the circuit, one containing water animal oil condensate (C 1) and butadiene, n-butene, to obtain water vapor, oxygen, low-boiling hydrocarbons, optionally a gas oil animals (C 2) containing carbon oxides and, optionally, an inert gas; D) n- butene and butadiene containing C ₄ - the absorption means to absorb the hydrocarbon supplied to the circuit, C ₄ - absorbent animal hydrocarbon oil is filled and by obtaining a base oil animals (d 2), oxygen, low-boiling hydrocarbon, optionally separating the condensed non-low-boiling gas component part containing carbon oxides, and optionally an inert gas from the gas oil animals (C 2), and subsequently, filled absorber oil C from animal ₄ - to remove the hydrocarbons C ₄ - to obtain a product gas animal oil; E) through extractive distillation using the selected solvent for the butadiene, C ₄ - a product oil animals (d 1), butadiene and organic substances containing a selective solvent animal (e 1) and n- butene separating a material oil animal (e 2) comprising; F) comprises a step for obtaining butadiene and the material oil consisting of a selective solvent in nature selective solvent was distilled material oil animal (e 1) that contains animal (f 1) and the material oil animals (F 2) containing the butadiene, where , taking samples from the coolant to be supplied to the circuit in step C), taking samples from the absorbing means to be supplied to the circuit in step D) and the peroxide content in the collected samples of iodine titration, differential scanning calorimetry (DSC) or the determining using a micro calorimetry, relates to a process for preparing butadiene from butene n-.