SU1312361A1 - Eddy-flow vertical shell-and-tube heat exchanger - Google Patents

Abstract

Invention m. Used to clean gases from vapor-dispersed impurities in the chemical and petrochemical industries. The invention allows to intensify the condensation processes and reduce the liquid phase entrainment by the cold flow, in each heat-exchanging tube (TT) 2 of the tube bundle there is a cylindrical insert 10 with a diameter of (O, 65-0.75) d and a length (l, 5-2, 5) d, installed from the energy separator (E) 3 at a distance

Description

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The invention relates to heat exchangers and can be used to clean gases from vapor-dispersible impurities in the chemical, petrochemical and other industries.

The purpose of the invention is to intensify the processes of condensation and separation and reduce the entrainment of the liquid phase by the cooling stream.

Figure 1 shows a vertical vortex shell-and-tube heat exchanger; figure 2 - node 1 in figure 1.

The heat exchanger contains a casing 1 with a bundle of heat exchanging pipes 2, equipped with energy separators 3 and fixed in tubular grids 4-6, forming a receiving chamber 7 and chambers 8 cooled and 9 hot streams. The energy separators 3 are connected to the receiving chamber 7, and the opposite ends of the pipes 2 relative to them, respectively, to the chambers of the cooled 8 and hot 9 streams. In each pipe 2 there is a cylindrical separator insert 10 with a diameter of (0.65-0.75) d and a length (l, 5-2.5) d, installed from the energy separator at a distance (2-4) d, where d is internal diameter of the pipe.

The heat exchanger operates as follows.

The vapor-gas and vapor-liquid mixture under excessive pressure is fed into the receiving chamber 7, and then through the energy dividers 3 enters the heat exchange tubes 2. Having received a rotational motion in the power separator x 3, the gas in the pipes expands, which leads to the effect of temperature gas separation and to the implementation of the processes of condensation and separation of impurities in the field of centrifugal forces. The resulting liquid phase is concentrated in the peripheral flow, and a cold flow is formed in the axial flow.

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pipe section 2. The passage through the cylindrical separation insert 10, the cold flow, is isolated from the penetration of the liquid phase from the peripheral region in the zone of maximum radial movements of the pelvis. The hot stream, separated from the condensate, is removed from the heat exchanger through chamber 9, and the cold stream is free from

impurities, enters chamber 8 and then removed from the heat exchanger.

The installation of inserts with the specified geometry and dimensions in the heat exchange tubes ensures isolation of the cold and hot flows in the zone of active radial movement of the hot flow and almost completely eliminates the entrainment of the liquid phase by the cold flow, which eliminates the need to install droplet separators flow.

Claims (1)

Invention Formula A vertical vortex shell-and-tube heat exchanger comprising a casing with a bundle of heat exchanging tubes, fitted with energy dividers and fixed in tube sheets forming the receiving chamber and the cooled and hot flows, the splitters connected to the receiving chamber and opposite ends of the tubes corresponding to the cooling chambers ; {sd and hot flows, characterized in that, in order to intensify the processes of condensation and separation and reduce the entrainment of liquid phase cold flow, each pipe is provided with a cylindrical separation insert with a diameter of (O, 65–0.75) d and a length of (1.5–2.5) d installed from the energy separator of its pipe on distance (2-4) d, where d is the internal diameter of the pipe. Steam gas mixture Refrigerant Cold flow Have a cold cladagemt. Ohm daylight stream Condensate. 1 Editor V. Petrash Compiled by M.Kosorotov Tehred L. Serdyukova Order 1959/37 Circulation 612 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader M.Sharoshi