SU1653810A1 - Apparatus for wet cleaning of steam from solid particles - Google Patents

Abstract

The invention relates to devices for wet scrubbing of steam from solid particles and improves the productivity of the apparatus. A device for wet cleaning of steam from solid particles is installed in the nozzle of the apparatus and contains a cone-shaped flow divider with helical grooves mounted on the shaft, means for distributed fluid supply in the form of a channel, for example, a nozzle, the cone of the splitter is completely inserted into the groove of the corresponding symmetrical profile irrigated fluid supply channel with guaranteed maximum clearance. the diameters of the cone of the dissector and the channel casing are equal; in the lower part of the shaft an impeller with screw blades is installed, for example, of propeller type, the outer diameter of which is larger than the diameter of the cone section вин, wingyvig. ., w the twist rotor blades and the impeller have the same direction. The device is equipped with a tube-type heat exchanger located above the cone-shaped divider, the heat-exchange tubes being made in the form of spirals with a transverse arrangement of the rows of the spiral in height and displacement of the spiral screws along the vertical in rows of one direction. 2 hp ff. 5 il. J

Description

The invention relates to the construction of devices for the chemical industry and can be used for the wet cleaning of steam from solid particles.

The purpose of the invention is to increase the productivity of the apparatus due to the effectiveness of the dispersion of the liquid,

FIG. 1 shows a reactor, longitudinal section: FIG. 2 - disperser with a divider and impeller: in FIG. 3 shows section A-A in FIG. in fig. 4 - working unit spiral pipes of the heat exchanger for the condensation of the vapor phase; in fig. 5 shows the node I in FIG. 4. (the displacement of the turns of the spiral rows of pipes in height).

The reactor includes a housing 1, on the roof of which are mounted actuators 2 with

shafts and mixing devices 3. On the case there is a fitting 4 for supplying the starting materials and fitting 5 for exiting the finished product. A vertical pipe 6 is also located on the casing, in the internal cavity of which the dispersing devices 6 and 7 are located successively along the vapor phase for dispersing and fine grinding the irrigated liquid and the heat exchanger-condenser 8.

The dispersers 7 consist of a shaft 9, on the upper end of which a divider 10 is mounted, the surface of which is made in the form of a spherical shape with radial rotation.

In order to intensify the dispersion process and increase the diameter

about ate with

about

Spray Probe Splitter 10 is fully included in the housing 11 for supplying irrigated liquid. On the spherical surface of the splitter 10, screw blades 12 are welded. In the lower part of the shaft 9, an impeller 13 of propeller type with screw blades 14 is installed. The direction of the screw blades 12 and blades 14 ensure the shaft to rotate in one direction. The shaft 9 is mounted in the slide bearing 15, and in the divider 10 there are holes 16 and 17 for lubrication. The bearing 15 is mounted with the housing 11 by means of ribs 18, and the housing 11 is attached to the pipe 6 by rods 19 and pipes 20 for supplying irrigated liquid to the dividers, the heat exchanger 8 being made in the form of tubular coils 21. The reactor is equipped with pipes 22 for water.

The reactor operates as follows.

Through nozzle 4, the aqueous alkaline suspension with particles of cotton cellulose is charged into the reactor at temperatures up to 140 ° C. The actuator 2 and agitators 3 are switched on to perform the washing process, in which a vapor phase is formed, which rushes into the nozzle 6 connected to the atmosphere of air. Vaporized from the surface, vapor bubbles trap solid particles of cellulose with them and also fly into the nozzle 6.

The velocity of the vapor phase with particles at the inlet to the nozzle 6 is 30-40 m / s. This flow, acting on the blades 14 of the impellers 13, causes them to rotate.

At the same time through the pipes 22 with a pressure of 2-3 kgf / cm2 cold water on the dividers 10 and through the tubular coils 21 of the heat exchanger creates a reactive circumferential force, which causes the divider to rotate. The helical lines of the blades 12 and 14 are executed in such a way that the circumferential forces from the reactive power of water and steam coincide and provide high rotational speeds of the splitter and impeller (up to 600-800 rpm). It provides intensive contact of steam bubbles with the smallest particles of cold water, their

rapid condensation and discharge back to the reactor.

Steam phase pass active zones

the impact of the dissector 10 and the impellers 13, enters the heat exchanger 8. After that, the treated and washed product enters the nozzle 5 for unloading.

Claims (3)

1. Device for wet steam cleaning from solid particles, installed in the outlet of the apparatus, containing a cone-shaped flow divider with screw blades, mounted on the shaft, a nozzle for distributing the fluid, about tl and so that, in order to increase the productivity of the apparatus by efficiently dispersing the fluid, the means for distributing the fluid - a cone-shaped divider is placed in a nozzle for distributing a fluid having a profile that is symmetrical with the dissector, which forms a guaranteed clearance with it, and is fitted with a fixed one on the bottom. heel shaft impeller with screw blades, the outer diameter of which is larger than the diameter of the cone-section, while the twist of the blades of the dissector and the impeller have the same direction. 2. The device according to claim 1, ranging from the fact that it is equipped with a tubular heat exchanger located above the cone-shaped divider. 3. The device according to claim 2, characterized by e. that the heat exchange tubes are made in the form of spirals with a transverse arrangement of adjacent rows of spirals in height and with a displacement of the turns of the spirals vertically in rows in one direction. thoroughly V -si -4 a / 1-0 I // Fig 3 Ragl FIG. five 21