SU1223938A1 - Heat-mass-transfer apparatus - Google Patents

Description

11223938

This invention relates to Coptak14.

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devices intended for carrying out heat and mass transfer processes in heterogeneous systems and, in particular, for carrying out technological processes when heat is required (removal) directly to the reaction zone, and can be used in devices for technological and sanitary gas cleaning in chemical , oil refining1 (t1y, pharmaceutical industry, in ferrous and nonferrous metallurgy, in power engineering and other branches of the national household.

The aim of the invention is to intensify the process by providing a highly turbulized layer of high-quality structure and increasing the heat transfer surface to supply heat directly to the phase interaction zone and to ensure a stable thermal regime on the gratings. Pa figs. 1 shows a column, a longitudinal section; pas figs. 2 times- . cut AA one. .

The apparatus includes a housing 1, a distributor 2 zhodkoi, contact plates, composed of located (2n10

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An additional grid 5 is located in the foam layer at a height of 0.7–0.8 of the foam level.

The tubes of gratings 3-5 enter the inner surface of a hollow closed loop b, which is a combined collector for the supply and removal of heat (cold).

The device operates as follows.

The liquid from the distributor 2 enters the grating 3-5, where it is vigorously foamed with a rising counter-gas. As applied to the desorption of carbon dioxide from carbonized solutions of monoethanolamine (MEA), the liquid phase is a solution of MEA, and the gas phase is a mixture of water vapor, MEA and carbon dioxide.

The vapor – gas mixture is formed due to the intense heating of the absorbent (MEA) by the hot surfaces of the tubes of gratings 3–5 and the closed circuit 6, within which steam is circulated.

The gas phase forming in the apparatus comes from the underlying gratings; on the upper, more and more enriched with carbon dioxide, and liquid parallel rows of pipes (Zi4), 30 regenerated solution of MEA - provarazmegdepiiyh height in a checkerboard pattern. The apparatus is provided with an additional tubular grating 5, located at a distance in a mutually perpendicular direction relative to the underlying grating, and an annular closed loop 6 located outside the body with a partition 7 dividing it into cavities 8 and 9, one of which has entrances for all pipes, and in the other - their exits.

An additional grid 5 is located in the foam layer at a height of 0.7–0.8 of the foam level.

The tubes of gratings 3-5 enter the inner surface of a hollow closed loop b, which is a combined collector for the supply and removal of heat (cold).

The device operates as follows.

The liquid from the distributor 2 enters the grating 3-5, where it is vigorously foamed with a rising counter-gas. As applied to the desorption of carbon dioxide from carbonized solutions of monoethanolamine (MEA), the liquid phase is a solution of MEA, and the gas phase is a mixture of water vapor, MEA and carbon dioxide.

The vapor – gas mixture is formed due to the intense heating of the absorbent (MEA) by the hot surfaces of the tubes of gratings 3–5 and the closed circuit 6, within which steam is circulated.

The gas phase forming in the apparatus comes from the underlying gratings; on the upper ones, more and more enriched in carbon dioxide, and the liquid between the pipes on the underlying lattice, coming into contact with the hot surfaces of the pipes every time, the liquid rapidly evaporates, and the formation of secondary vapor compensates for its loss in the process of condensation during heat transfer absorbent,.

The steam circulating in the tubes of the heat mass transfer plate, after heat recovery, leaves the collector in the form of condensate.

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Compiled by S. Baranov Editor T. Parfenova Tehred I. Popovich Corrector S. Cherni

Order 1858/5 Circulation 663 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PIP Patent, Uzhgorod, Proektna St., 4

Claims (1)

HEAT AND MASS TRANSFER APPARATUS, comprising a housing and contact lattices located therein, composed of parallel rows of pipes arranged in staggered height, a liquid distributor and phase in and outlet pipes, characterized in that, in order to intensify the process, by providing a highly turbulent layer high-quality structure and increase the heat transfer surface, heat supply directly to the phase interaction zone and ensure stable thermal conditions on the gratings, it is equipped with additional an additional tubular lattice placed at a distance in a mutually perpendicular direction relative to the underlying lattice and an annular closed loop located outside the casing with a partition dividing it into cavities, in one of which there are inputs of all pipes, and in the other there are their outputs.