DD215513A1 - HOLE PLATE FILTER RELAXATION - Google Patents

Abstract

The invention relates to a perforated plate relaxation filter, which can be used in entry locks for the transfer of a dust-containing o. Dusty good in a system of higher pressure. To be achieved is a technically feasible effort, low Staubverl. u. a solution that meets the requirements of environmental protection. This leads d. Task to filter a dust-laden Traegergas while relaxing an entry lock in the entry system. According to the invention filter elements are fastened on a perforated plate. The filter element consists of a non-ferrous metal filter tube, the dust-tight over sealing elements on d. Perforated plate u. connected to a pressure plate The filter element is clamped by means of a cap nut against the perforated plate.

Description

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Title of the invention

Iochplatten-EntspannungsfiIter

Field of application of the invention

KLe invention relates to a perforated plate relaxation filter, in entry locks for the transfer of a dusty or dusty material, in a system of higher pressure, such. B. can be used in the gasification of coal dust under high pressures, «

Characteristic of the known technical solutions

The transfer of solid substances in a system of higher 'pressure is known to be done with container locks. Under atmospheric pressure, these locks are filled with pesticide and brought with a gaseous medium under the pressure of the subsequent system. After transferring the substances to the higher pressure system, the locks are separated and released from this system.

Since residual dust remains in the container locks, the expansion gas is contaminated. The expansion gas must be dedusted, so that no pollution of the atmosphere takes place by dust emission. According to DD-IiVP 141240 a container lock has been proposed in which a filter wall made of porous material is arranged so that the container lock in an upper space, is derived from the expansion gas,

and in a lower space in which the stringing gas is normally introduced, is separated. When exceeding a predetermined differential pressure between the upper and lower chamber of the container locks occurs at the next Bövor a cleaning of the filter in that the stringing gas is partially or completely introduced above the filter. The filter wall made of porous material leads to high investments for dust separation.

Object of the invention

The aim of the invention is to develop a filter construction that meets the requirements of environmental protection through its filter properties, has a technically feasible effort.

Explanation of the essence of the invention

The object of the invention is to propose an expansion filter which meets the requirements of environmental protection by filtering dust-laden gas when releasing a container lock, which serves to transfer dusty solids into a system of higher pressure. According to the invention a perforated plate is arranged in the upper bottom of a container lock, at which the individual filter elements z. B, are releasably secured in the form of filter pots. As a result of the arrangement of the perforated plate, the injection sluice is subdivided into two spaces, into the upper carrier gas distribution space and into the lower pulverized coal space. Carrier gas is supplied to or removed via the covering / expansion connection. Torrangig centric the coal dust inlet nozzle is arranged in.der entry sluice. The filter element

is clamped against the perforated plate by means of a cap nut and threaded bolt «

The two sealing elements (pressure ring and round ring) dustproof separate the carrier gas distribution space from the pulverized coal space,

The deformation forces of the sealing elements are absorbed by the non-ferrous metal filter tube. The dust-tight seal between cap nut and pressure plate is made by a Fülldientring. A circumferentially identical gap between pressure plate and non-ferrous metal filter tube as well as between the pressure ring and the UE metal filter tube is designed with a commercially available adhesive joint, which also ensures a dust-tight seal.

embodiment

Pig, 1 shows the hole plate relaxation filter

in the entry lock

Figure _# 2 shows the filter element Figure "3 shows the adhesive bond

The invention will be explained in more detail on an embodiment '.

According to FIG. 1, a perforated plate 6 for a differential pressure of 0.05 MPa is welded between the two pressure chambers into a container lock 1 from the outside diameter, which in a known manner has a pulverized coal inlet stub 4 and a string depressurizing stub 5, on the filter elements 2 in a corresponding arrangement , consisting of a standard non-ferrous metal filter tube 9 of diameter 85 mm and length 100 mm, by means of threaded bolts 10 and cap nut 8 are releasably braced «

To ensure a dust-tight separation of the carrier gas distribution chamber 3 from the coal dust space

in the mentioned differential pressure between the two pressure chambers, which is permissible for the perforated plate 6 and the filter elements 2, according to Figure 2 between the pressure ring 11 and perforated plate 6, a round ring 12 corresponding dimension and quality and between pressure plate 13 and cap nut 8 a Fülldichtring 14 also corresponding Dimension arranged and deformed with such a screw tightening torque that the sealing function is guaranteed. The adhesive bond 15 is produced according to FIG. 3 with a commercially available two-component adhesive Epasol EP 11 and ensures a dust-tight seal between the non-ferrous metal filter pipe 9 and the pressure ring 11 or pressure plate 13 under the operating conditions that occur.

Claims (2)

invention claim Perforated plate relaxation filter for container locks, which serve for the transfer of dusty or dusty solids in a system of higher pressure, the perforated plate relaxation filter separates the entry lock into two pressure chambers, in the carrier gas distribution space and in the coal dust space, characterized in that on a perforated plate (6) individual filter elements (2) by means of a cap nut (8), are releasably braced, that the filter elements (2) of non-ferrous metal filter tubes (9) opposite the perforated plate (2) by two sealing elements pressure ring (11) and circular ring ( 12) dustproof, exist, and that each a circumferential equal gap between the non-ferrous metal filter tube (9) and the pressure plate (13) and between the non-ferrous metal filter tube (9) and the pressure ring (11) with an adhesive connection (15) are executed , For this 2 sheets of drawings