PROCESS FOR HIGH TEMPERATURE REMOVAL OF TRACE CHLORIDE CONTAMINANTS IN CATALYTIC DEHYDROGENATION PROCESS Russian patent published in 2018 - IPC C07C7/12 C07C7/13 C07C7/20 

FIELD: chemistry.

SUBSTANCE: invention relates to a process for removal of trace chloride contaminants from a reactor effluent in a catalytic hydrocarbon feed dehydrogenation process, comprising: compressing the reactor effluent comprising polynuclear aromatic compounds in a compressor to obtain a compressed effluent; feeding the compressed effluent into a chloride removal unit; adsorbing the chlorides present in the compressed effluent in the chloride removal unit to produce a treated product. Adsorption of chlorides is carried out at a temperature in the range of 93 to 300°C and includes bringing the compressed effluent into contact with an adsorbent material which contains activated alumina, a promoted alumina product, metal oxides, molecular sieves, or a combination thereof.

EFFECT: technical result is the prevention of the formation of undesirable by-products (condensation of heavy hydrocarbons) and, therefore, fouling of the adsorbent, which leads to high adsorption capacity for chloride and a longer service life of the adsorbent.

8 cl, 3 dwg