RU2282482C1 - Filter for cleaning hetero-phase systems - Google Patents

Abstract

FIELD: cleaning dust-laden gases; chemical, food-processing and metallurgical industries; manufacture of building materials.

SUBSTANCE: proposed filter has rectangular housing with filtration partition dividing it into two chambers: contaminated medium chamber and cleaned medium chamber; it is also provided with medium inlet and outlet branch pipes. Novelty of invention consists in availability of concentrate discharge branch pipe mounted in contaminated medium chamber; partition mounted in housing by means of cross-pieces and flexible inserts is parallel to filtering partition; it is movable in vertical direction.

EFFECT: continuous operation of filter; enhanced regeneration of filtering partition; enhanced operational reliability.

2 dwg

Description

The invention relates to techniques for cleaning dusty gases and can be used in the chemical, food and metallurgical industries, as well as in the building materials industry.

The closest in technical essence and the achieved effect is a filter designed for separating heterophase systems, consisting of a rectangular housing, a nozzle for introducing a heterophase system, a nozzle for discharging a purified medium, and a filter partition that divides the housing into chambers of a contaminated and purified heterophase medium, a little higher in the case there is a hatch for unloading sediment [Kasatkin A.G. The main processes and apparatuses of chemical technology [Text] / A.G. Kasatkin. Mos. Chem. - those. in - t. - M .: Chemistry, 1971. - 784 p .; Bibliography: p. 759-762].

The disadvantage of the prototype is unreliable, ineffective manual regeneration of the filter element, leading to a periodic mode of operation of the filter and secondary environmental pollution.

An object of the invention is to increase the efficiency of cleaning the filter element from sediment, increasing the reliability of the filter, as well as ensuring continuous operation.

The problem is achieved in that in the filter for cleaning heterophase systems, containing a rectangular housing with a filter baffle separating it into chambers of contaminated and cleaned media, pipes for input and output of the medium, the new thing is that in the camera of the polluted medium, additionally equipped with a pipe for the output of the concentrate, by means of traverses and flexible inserts, a dividing partition is placed parallel to the filter partition with the possibility of movement in a vertical position.

The technical result is to increase the efficiency of cleaning the filter element from sediment, to increase the reliability of the filter, as well as to ensure continuous operation.

Figure 1 shows a filter for cleaning heterophase systems (at the time of filtering), section; figure 2 - gas filter for cleaning heterophase systems (at the time of regeneration), section.

The filter (FIGS. 1, 2) comprises a housing 1, a filter baffle 2, dividing the housing into chambers of a contaminated 3 and purified medium 4, a nozzle for introducing a polluted medium 5, a separation baffle 6, traverses 7, flexible inserts 8, an outlet pipe for the purified medium 9 branch pipe for a conclusion of a concentrate 10.

The filter works as follows.

A heterophasic medium under the influence of a differential pressure enters through the nozzle 5 into the chamber of the contaminated medium 3. The dispersion medium, passing through the filter baffle 2, is cleaned of impurities and enters the chamber of the purified medium 4 and then is discharged from the apparatus through the nozzle 9. As the precipitation forms on the outer surface of the filter baffle, a layer of the dispersed phase accumulates, while the filter resistance increases and there is a need for cleaning it — regeneration. At the time of regeneration, the dividing wall 6 by means of a traverse 7 and flexible inserts 8 is lowered to the lower position (figure 2). In this case, due to an increase in the flow velocity, a tangential driving force arises, which helps to remove sediment from the surface of the filter membrane. The precipitate removed from the filter baffle with a part of the heterophase medium is removed through the nozzle of the concentrate 10 into the pre-cleaner (not shown in the diagram).

The proposed gas filter provides:

- continuous operation;

- an effective system of regeneration of the filter partition;

- high reliability in work.

Claims (1)

A filter for cleaning heterophase systems, comprising a rectangular housing with a filter baffle separating it into chambers of contaminated and cleaned media, nozzles for input and output of a medium, characterized in that in the chamber of a contaminated medium, additionally equipped with a nozzle for output of the concentrate, through traverses and flexible inserts parallel to the filter baffle, a dividing baffle is placed with the possibility of movement in a vertical position.

Images