Abstract: The filtering plant has a plurality of porous, gas-permeable filter elements with at least one raw gas side and at least one clean gas side. The gas to be cleaned (raw gas) flows towards the raw gas side, and the clean gas side is connected with a clean gas passage. Into the clean gas passage and into the filter elements, pulse gas coming from a pressure vessel is introduced for periodically detaching dust adhering at the raw gas side. Via a gas-permeable passage, the pressure vessel is connected with a measuring chamber having a smaller volume than the pressure vessel. While pulse gas flows out of the pressure vessel into the clean gas passage and to the filter elements, the pressure difference .DELTA.p=p1-p2 is measured and monitored, where p1 is the static pressure in the measuring chamber, and p2 is the static pressure in the pressure vessel. Expediently, an alarm signal is activated when the maximum of the pressure difference falls below a predetermined minimum value.

Abstract: In a filter housing (10) for the cleaning of dust laden, preferably hot gas ceramic filter candles (6) which are closed at one end are positioned in multiple levels one above the other and connected to laterally spaced apart supporting collectors (7). The supporting collectors (7) and the filter candles (6) within one level form a filter module which is divided into several mutually separate filter segments (18) in the shape of a circular sector. The supporting collectors (7) of one filter segment (18) are connected with a clean gas collecting channel (8) located on the same level, whereby a space remains in the center of each level which is free of collecting supports (7). Into each clean gas collecting channel (8) protrudes a cleaning lance (19) either directly or indirectly. (FIG.

Abstract: In a process for the cleaning of dust laden, preferably hot gas with the aid of ceramic filter candles (6) which are open at one end stacked above one another in levels in a raw gas space, and connected to a clean gas space, these filter candles are cleaned by way of pulsed gas, which is blown for a short period of time from the side of the clean gas space and against the direction of gas flow into the filter candles. In the raw gas space the gas to be cleaned and the dust loosened by the cleaning are guided separately so that the loosened dust is guided to the dust removal structure of the raw gas space without once again mixing with the gas to be cleaned. The process is advantageously carried out in a filter housing (10) wherein the filter candles (6) are connected to laterally spaced apart supporting collectors (7). The filter candles (6) in one level are separated from the filter candles (6) in the level thereabove by an ash removal mantle (15). (FIG.