Desludger apparatus and process
阅读：783发布：2023-09-04
专利汇可以提供Desludger apparatus and process专利检索，专利查询，专利分析的服务。并且Method of and apparatus for collecting and removing contaminants from a filtration system by passing unclarified contaminant bearing liquid through a filter apparatus to collect the contaminants thereon and discharge the liquid clarified thereby. At a predetermined time, the discharge from the filtration system to the filter apparatus is interrupted and the contaminants removed from the filter apparatus to the unclarified liquid whereat they are collected and conveyed out of the apparatus. The collected contaminants are partially solidified by exposure to heat and conveyed from the system for disposal.，下面是Desludger apparatus and process专利的具体信息内容。
2. The method of claim 1 wherein the step of removing the accumulated contaminants from the filter means includes brushing the outer surface of said filter means.
3. The method of claim 2 wherein the step of brushing the outer surface of said filter means comprises moving the surface thereof past a stationary brushing means.
4. The method of claim 1 further including adding a quantity of filter forming material to the liquid passed from the filtration system to facilitate accumulation of the contaminants and expended filter material by the filter means.
5. The method of claim 1 wherein the step of forming a plug of material during the upward conveying comprises forming a series of material plugs to filter a portion of the suspended solids from the liquid.
6. The method of claim 1 wherein the step of forming a plug of material during the upward conveying includes preventing liquid below the plug from rising to a level above the plug of material.
7. The method of claim 1 wherein the step of forming a plug of material during the upward conveying includes squeezing the plug of material to remove liquid therefrom.
8. The method of claim 5 wherein the step of forming a series of material plugs to filter a portion of the suspended solids from the liquid comprises filtering the suspended solids through the lowermost plug and squeezing the uppermost plug of material to remove liquid therefrom.
9. The method of claim 1 wherein the upward conveyance of said materials in said auger means is periodically interrupted to facilitate removal of liquid conveyed therein.
10. A method of removing and disposing of sludge from a filtration system containing unclarified liquid and expended filter material comprising the steps of withdrawing the contents of a filtration system through filter means carried within a desludger chamber clarifying the liquid withdrawn therefrom and discharging said liquid, adding a quantity of filter cake forming material to said discharged liquid, circulating said sludge bearing liquid and filter cake forming material through the filter means forming a filter cake thereon and clarifying the lIquid passing therethrough by removing substantially all of the sludge from the liquid to the filter means, interrupting the withdrawal of liquid from the filtration system upon the clarification thereof, removing the filter cake formed on the filter means upon the interruption of withdrawing liquid from the filtration system, collecting the removed filter cake and conveying said filter cake from the desludger chamber to a vertically disposed auger means which is in direct communication with the desludger chamber, the filter cake entering the auger adjacent the bottom thereof, heating said filter cake in said auger means to vaporize at least a portion of the liquid in said filter cake, so that the remaining filter cake can be elevated by the auger means at relatively slow speeds of rotation of said auger means, a portion of the flight of the auger means being removed at least one position spaced from the bottom of the auger means, elevating the filter cake in said auger means while allowing liquid therein to drain by gravity, forming at least one plug of the filter cake being elevated at said position, and discharging substantially dry filter cake at the top of the auger means.
11. The method of claim 10 wherein the liquid clarified by withdrawing the contents of the filtration system through the filter means is discharged therefrom into a pre-coat feeder chamber for the addition of filter cake forming material.
12. Apparatus for removing and disposing of sludge from a filtration system containing unclarified liquid and expended filter material comprising means for passing the contents of a filtration system through a desludger chamber to remove the sludge contained therein thereby clarifying the liquid passed therethrough, filter means including hollow mesh filter elements having a filter cake supported thereby positioned within the desludger chamber to accumulate the sludge removed from the filtration system, means for interrupting the passing of the contents of the filtration system through the desludger chamber upon the clarification of the liquid and removal of the sludge contained therein, means for removing the filter cake bearing the sludge accumulation from said filter elements upon interruption of the passing of the contents of the filtration system, means for collecting the filter cake and conveying said filter cake from said desludger chamber to a vertically disposed auger means in direct communication with said desludger chamber, said means for collecting the filter cake and conveying said filter cake from said desludger chamber, conveying said filter cake to the auger means adjacent the bottom thereof, heating means in thermal contact with said auger means for vaporizing at least a portion of the liquid in said filter cake so that the auger means is capable of elevating the filter cake at a relatively slow speed of rotation, a portion of the flight of said auger means being removed at least one position spaced from the bottom thereof for forming a plug or filter cake at said position, means at the top of said auger means for discharging said filter cake.
13. The apparatus of claim 12, further including means for adding a predetermined quantity of filter cake forming material to said liquid to facilitate the accumulation of sludge by said filter means.
14. The apparatus of claim 13 wherein said means for adding a predetermined quantity of filter cake forming material comprises a container for holding a quantity of filter cake forming material, scraper means carried within said container and movable through the contents contained therein to prevent agglomerating of the filter cake forming material, and an auger rotatably carried within said container to remove a predetermined quantity of the filter cake forming material to response to the rotation thereof.
15. The apparatus of claim 12 wherein said filter elements comprise a plurality of coaxial hollow discS having an outer mesh surface forming a septum for support of a filter cake.
16. The apparatus of claim 12 wherein the means for removing the filter cake bearing the sludge accumulation comprise brush means positioned in contact therewith for mechanically separating the filter cake from the filter elements.
17. The apparatus of claim 12 wherein said heated vertical auger has a plurality of auger flight portions removed to form a series of accumulated sludge plugs.
18. The apparatus of claim 12 wherein said heated portion of said vertical auger extends at least from a point below the bottom outlet of said desludger chamber to at least a point above said desludger chamber.
19. The apparatus of claim 12 wherein said heated portion of said vertical auger extends upwardly at least from a point below the bottom outlet of the desludger chamber.
20. The apparatus of claim 12 wherein said heated vertical auger is enclosed by a plurality of selectively actuable heating means to control the temperature thereof.
21. The apparatus of claim 20 wherein said plurality of selectively actuable heating means comprise steam jackets.
22. The apparatus of claim 20 further including deflector means carried by said auger to remove the sludge therefrom.
23. The apparatus of claim 12 further including recovery means connected to said means for heating the conveyed filter cake to recover vapor formed upon removal of the liquid conveyed therewith.
24. The apparatus of claim 23 wherein said recovery means includes filtration apparatus for removing particulate material from the vapor.
25. The apparatus of claim 23 wherein said recovery means includes a condensor for changing the vapor into a condensate.
26. The apparatus of claim 25 wherein said recovery means further includes a liquid separation apparatus for separating immiscible liquids condensed from the vapor.
27. The apparatus of claim 12 wherein said conveyor means conveying said filter cake to the auger means adjacent the bottom thereof includes scraper means carried within said desludger chamber and movable through the contents contained therein to prevent filter cake from adhering to the desludger chamber.
28. The apparatus of claim 27 wherein said conveyor means includes a vertically disposed auger means within said desludger chamber.
29. The apparatus of claim 28 wherein said conveyor means includes a horizontally disposed auger means in direct communication with said vertically disposed auger means within said desludger chamber.
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