Atmospheric and vacuum distillation tower

Abstract

The invention discloses an atmospheric and vacuum distillation tower which comprises an upper cylinder, a middle cylinder and a lower cylinder of an integral structure, wherein a feeding hole, a rotational flow plate defoaming device, a first liquid distributor, a first packing layer and a first oil collection device are sequentially arranged on the upper cylinder from top to bottom; the first oilcollection device extends outside t he upper cylinder through a first oil discharge tube; a second liquid distributor, a second packing layer, a second oil collection device, a waveform deoaming device, a plurality of shutter valve tower discs, a third liquid distributor, a third packing layer and a third oil collection device are sequentially arranged on the middle cylinder from top to bottom; the plurality of the shutter valve tower discs are horizontally arranged in an axial staggered manner in a vertical direction; the second oil collection device and the third oil collection device respectively extend outside the middle cylinder through a second oil discharge tube and a third oil discharge tube. By adopting the atmospheric and vacuum distillation tower disclosed by the invention, thefractionation effect on different fractions is remarkably improved, the separated fractions are prevented from overlapping, the separated fractions are pure, and the pressure in the tower can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to an atmospheric and vacuum distillation tower. Background technique [0002] Atmospheric and vacuum distillation towers are mostly one of the important equipment for producing naphtha, kerosene, diesel oil, light wax oil, heavy wax oil and residual oil. With the extensive exploitation and utilization of various oil resources, the output and processing volume of inferior crude oil are also increasing year by year. The processing of low-quality crude oil has brought economic benefits to refining and chemical enterprises. For the processing of high-sulfur and acid-containing low-quality crude oil, the process of atmospheric and vacuum distillation is a physical process that combines heating, vaporization, condensation, cooling, mass transfer, and heat transfer. process. In other words, the atmospheric and vacuum distillation tower needs to consume a certain amount of ene...

AI Technical Summary

Problems solved by technology

Any insufficient fractionation will affect the yield and quality of the target product, and directly affect the production and economic benefits of downstream devices; and any excessive fractionation will increase unnecessary investment and consume too much energy

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