SU1255848A2 - Contact heat-exchanger for cooling gases - Google Patents

Abstract

The invention relates to a power system and can be used to cool a gas. The invention makes it possible to increase the reliability of the heat exchanger by reducing the pulsations under variable conditions. At increased gas and liquid loads, most of the reagent (P) 7 formed in the first contact zone of the gas-liquid emulsion (GZ) flow receives a rotational upward motion and fills the cavity between the cone 6 and the nozzle 8, and the space located above. A part of this liquid returns to the first contact zone, and the main part of the HE is discharged through the discharge pipes 16 and overflow pipe 15 to pacceKaTehb 14. On the latter, it again; sprays (L with SP) (e.g. 00 i4 00 1H f-uz. F

Description

in the volume under the turbulizing P 7, forming the second highly developed continuously updated surface of the contact of the phases due to the collision of two streams. Pass all contact devices, the flow of the HE is divided on the cone 9, the cooled and separated gas

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The invention relates to heat and power, in particular to contact heat exchangers for cooling gas, and is an improvement of the known heat exchanger according to the authors. St. # 832297.

The purpose of the invention is to reduce the contact heat exchanger by reducing pulsations under variable conditions.

Figure 1 shows the contact heat exchanger, longitudinal cut, figure 2 - section aa in figure 1; ra fig.Z - section bb in fig ..

The contact heat exchanger for gas cooling contains a vertical cylindrical body 1 with pat- terns, chops 2 and 3 for supplying gas and liquid and nozzles 4 and 5 for removing contact media. In the housing 1 are placed Rusa at its height contact and separation devices. Contact devices are made in the form of truncated cones 6, on the facing: downward lower bottoms U and x of which turbulizing grids 7 are fixed. Each of the grids 7 is installed below the larger base of the cone 6 of the subsequent contact device. The ends of the grids 7 are rigidly attached expanding conical nozzles 8.

The separation device is complete in the form of a truncated cone 9, facing down with a large base, covering the turbulizing grid 7 last along the medium and positioned with a gap 10 relative to the wall of the housing 1. The turbulent grids 7 are made in the form of rims of arcuate blades 11 and alternating with them hollow V -ab,

1255848

through the pipe 4, and the liquid through the pipe 3, thanks to the drainage of the liquid through the pipes 13 and 16, its accumulation over P 7 is eliminated. as a result, pulsations are reduced under heavy loads of liquid and gas. 2 hp f-ly, 3 ill.

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different blades 12, in the upper and lateral parts of the latter of which slots 13 are made. Each contact device, except the lower one, contains a raspypitel that is complete, mainly in the form of a dissector 14, installed against the lower edge of the corresponding vertical overflow pipe 15, and a horizontal outlet pipe I6, located between the lower base of the truncated cone 6 and the turbulizing grid 7 of its contact device, and communicated with the ends of the po-; with a truncated cone 6 of the downstream contact device, and a middle one with an upper section of the overflow pipe 15, which is located along the axis of the turbulizing grating 7 and extended by its lower end beyond its limits. The pipe 2 is equipped at the end of the nozzle. The G6 discharge pipes are located above the upper sections of the respective conical nozzles 8

A contact heat exchanger for cooling the gas is operated as follows.

Saturated hot gas enters through pipe 2 into body I, where it is orbited with a cold liquid injected through the nozzle. The descending gas-liquid flow is directed by the cone 6 of the contact device to the multi-blade turbulizing grid 35, where it acquires a multi-jet rotational motion and is thrown onto the wall of the cone 6 of the downstream contact device. Under the action of centrifugal force 40, the liquid tends toward the expansion of the cone 6 of the contact device. Turbulant lattice 7,

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located below the larger base of the truncated cone 6 of the subsequent contact device, contributes to the accumulation of fluid. A part of the rotating gas-liquid emulsion receives an upward movement and fills the cavity between the cone 6 of the contact device and the conical nozzle 8, from which through the slots 13 in the upper and side portions of the hollow V-shaped blades 12 is injected into the first contact run with a circulating circuit highly developed continuously updated contact surface. Another part of the gas-liquid emulsion acquires a downward rotational motion and enters the downstream contact device.

At increased loads on gas and liquid, a large part of the gas-liquid emulsion formed in the first contact zone receives upward movement and completely fills the cavity between the cone 6 of the contact device and the tapered nozzle 8, and the above space, from which part of the liquid flows to the first the contact zone, and the bulk of the accumulated gas-liquid emulsion through the discharge pipes 16 and the overflow pipe 15 is diverted to the divider 14, where it is again sprayed in the volume under the turbulating grate 7 , forming the second highly developed, continuously refreshed due to the impact of the two streams, the contact surface of the phases. After the interaction, the gas-liquid emulsion together with the gas-liquid flow from the contact zones enters the downstream contact device, where the process is repeated. Passing all the contact devices, the gas-liquid flow is separated on the cone 9 of the separation device. Cb {laden

and the separated gas rises up and is discharged through the nozzle 4, and the liquid is removed through the nozzle 5. Due to the installation of pipes 15 and 16, the accumulation of fluid over the turbulent grid 7 and thus the pulsation mode of the heat exchanger is eliminated, which ensures stable operation of the heat exchanger at high loads liquid and gas.

Claims (3)

Invention Formula G. Contact heat exchanger for gas cooling according to bus No. 832297, characterized in that, in order to increase reliability by reducing pulsations in variable modes, each contact device, except for the lower one, additionally contains a dispenser, vertical overflow and horizontal discharge pipes, wherein the latter is located between the lower base of the truncated cone and the turbulizing lattice of its contact device and communicated with the ends of the truncated cone cavity of the downstream contact device, and cf days part - to the upper portion of an overflow pipe placed on the axis and the lattice turbulizing vsh ction lower end beyond it, the dispensers are arranged under the respective gratings turbuliziruk tsimi 2. Heat exchanger according to claim 1, wherein each diffuser is made in the form of a dissector mounted opposite the lower section of the overflow pipe. 3. Heat exchanger according to claims 1 and 2, which is indicated by the fact that the discharge pipes are located above the upper sections of the corresponding conical nozzles. Aa 15 6 at Fie.2 12 12 eleven eleven 15 15