Plate-type fractionating tower

Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a plate-type fractionating tower which comprises a tower body and a group of tower plates, one group of tower plates is located in the tower body, each tower plate is obliquely arranged and connected to the inner wall of the tower body, a channel is formed in each tower plate, a control unit is arranged in each channel, a groove is formed in the tower body located at the lowest end of each tower plate, and an adjusting unit is arranged in each groove; each adjusting unit comprises a group of barrier plates, a wedge block, a first rod, a second rod and a first plate; by arranging the adjusting units, a wedge-shaped block is extruded by liquid, and the first rod and the second rod are matched with each other, so that the first plate swings, the liquid flows from top to bottom, the defect that a valve is traditionally used for controlling is overcome, the liquid is subjected to orderly fractionation operation, and the fractionation effect of the liquid is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a plate type fractionation tower. Background technique [0002] Fractional distillation is a common method for separating liquid mixtures by using the differences in boiling points of liquid mixtures. This method is widely used in petroleum refining to separate various oil products. The plate fractionation tower is a common separation device in petrochemical enterprises, including the fractionation tower cylinder and the staggered trays in the cylinder. [0003] In the Chinese invention patent (application number: 2019113305316), the present invention discloses a plate fractionation tower, including a tower body, the top of the tower body is fastened with an upper head, and the inner upper end of the tower body is fixedly connected with a Demister, the inside of the tower body is provided with a sieve plate, the front and rear ends of the sieve plate are sleeved with c...

AI Technical Summary

Problems solved by technology

[0003] In the Chinese invention patent (application number: 2019113305316), the present invention discloses a plate fractionation tower, including a tower body, the top of the tower body is fastened with an upper head, and the inner upper end of the tower body is fixedly connected with a Demister, the inside of the tower body is provided with a sieve plate, the front and rear ends of the sieve plate are sleeved with clips, and are clipped with the inner wall of the tower body through the clips, the left side of the sieve plate A liquid receiving pan is provided, and a downcomer is provided on the right side of the sieve plate; a plate type fractionation tower according to the present invention can effectively remove the liquid foam entrained by the gas by adding a demister to reduce gas back-mixing, It can effectively reduce the height of the foam layer in the downcomer and reduce the liquid load of the downcomer. It can not only recover the effective components, but also create favorable conditions for the downstream process of the gas, and the protective net set in the demister can protect the The wire mesh is protected to prevent the wire mesh from being scratched during transportation, installation or work, so that the wire mesh is deformed and affects the demister efficiency of the demister; Part of it is controlled by the valve. Since the main component of the valve is the valve plate, and the valve plate is mostly made of metal. During the long-term control of the liquid, the valve plate is easy to rust, which will cause the valve to be stuck in use. At the same time, due to the rust of the valve plate in the valve, it cannot be completely fitted, and the liquid drips from top to bottom without artificial control, which affects the fractionation of the liquid by the hot steam, resulting in poor fractionation of the liquid, making the The technical solution is limited

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