SU129200A1 - Continuous method of step-countercurrent contact catalytic dehydrogenation of gaseous hydrocarbons - Google Patents

Description

The rapid growth of hilgizatsii 11iftepeperr sogk; Causes the knock / yunnSb node to better demand for olefia. -guy raw materials for CHEMICAL c1P theses (mainly C2H4, CzN-C4H8)

The semi-spasnodic and non-sparing operating systems of thermal and atalitic money dr1 pc1-, and various types of raw materials used in industry are very cumbersome and insufficiently effective.

Search for ways of Intensifkadpi processes with circulating catalysts, catalysts, heat carrier, per unit of gas. local re-cuttings of parts of its parts.

A continuous, step-by-step method of contact-catalytic degeneration is proposed: neither pelvic hydrocarbons, concluding that, in order to speed up, dehydration of the catalyst and regeneration of the catalyst is rendered in the same case, it can be used; Lifting, temperature and each section.

The process of dehydrogenating gaseous paraffins is carried out in a stewed multi-plate apparatus (see, installation scheme), the lower section / "opening" is intended for catalytic dehydration with a temperature rise, and grain 2 x is also used for oxidative regeneration of the catalyst, also with a step of temperature rise, temperature distribution.

The gas, which is equivalent to dehydration, passes through the heat exchange flow and enters the dehydrogenation section 1, & which is in contact with draining dehydrated-1) cat, heated to a high temperature of powder No. 129200-2, cat; 5, (5) () rn I LIQUID-BATTERY. gas.

Most shch gknp1 and rc ry repaired by KaTajrHsaKjj) paste the th from section 2 of regeneration on the top plate of the section / dehydrogenation, where it contacts the deeply transformed, slow-reacting cheese. A spent, partially coked catalyst, passed from the Duvet section, is not in the bottom of the elevator, and is not released to section 2 of oxidative regeneration, in which the activity of the catalyst that is returned to the second contact is restored. In the regenerator section, the catalyst, which also functions as a solid heat carrier, is supplied with the heat required to carry out the endothermic dehydrogenation process in the section. The apparatus is supplied with appropriate heat utilization devices (heat exchangers and a waste-heat boiler) and dust collectors (three-stage cyclones in each section and special filters made from norway tubular elements). The air ram and catalyst regeneration section are serviced by two auxiliary gas fireboxes operating under pressure. These furnaces are used both to warm up the system when it is started up and to thermally regulate the process during the operation stage (since heat emissions during the regeneration process are not sufficient to compensate for the heat expenditure during the dehydrogenation stage).

The ratio of the catalyst and the dehydrogenated raw materials, as well as the number of plates the apparatus chooses on the gknov of macrokinetic and warm yX: calculated: c.

11 w e dme g i s obr i e n i

Continuous method of step-npoi and contact contact kata, / itic dehydrirava "and gaseous hydrocarbons, and with the fact that, in order to deepen and accelerate the process, the dehydration and regeneration of the catalyst Is produced in a fluidized bed, in sectional ipparates with a stepwise temperature rise on each section.