Tubular fixed-bed reactor for selective co-hydrogenation of mixed C4 containing high-concentration alkyne and alkadiene

Abstract

The invention discloses a tubular fixed-bed reactor for selective co-hydrogenation of mixed C4 containing high-concentration alkyne and alkadiene. The reactor is the tubular fixed-bed reactor and comprises a casing, tubes, functional tube openings and internal pieces and the like; the tubes are filled with solid co-hydrogenation catalysts used for performing selective co-hydrogenation on mixed C4; the main functional tube openings and internal pieces of the reactor comprise multi-specification porcelain balls, an inlet distributor, an outlet collector, an unloading port, a feeding port, a circulating port, a water inlet, a water outlet, a safety valve port, a discharging port, an exhausting port and an emptying port. With the reactor, the technical problems of low conversion ratio of selective hydrogenation, large equipment size and coking of reactors due to rapid heating of traditional devices can be solved.

Description

technical field [0001] The invention relates to a petroleum refining equipment, in particular to a device for selective co-hydrogenation of mixed C4. Background technique [0002] Mixed carbon four is an important petrochemical resource, which originates from the refinery gas produced in the petroleum refining process and the by-product of the cracking of petroleum hydrocarbons to produce ethylene. Mixed C4 mainly contains n-butane, isobutane, 1-butene, trans-2-butene, cis-2-butene, isobutene, 1,2-butadiene, 1,3-butadiene, Saturated and unsaturated hydrocarbons such as methylacetylene, ethylacetylene, and vinylacetylene are mainly used to produce isobutene and 1-butene in industry. [0003] 1-Butene is one of the important basic chemical raw materials, and it is the raw material for the synthesis of sec-butanol and dehydrogenation of butadiene. React with formaldehyde to generate isoprene, which can be made into polyisobutylene polymers of different molecular weights to be...

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of mixed carbon four selectivity co-hydrogenation tubular fixed-bed reactor that is used for high-concentration alkyne and diene, to solve the conversion rate of selective hydrogenation that traditional device exists, The volume of the equipment is large, and technical problems such as coking of the reactor due to the rapid overheating

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