TAILIEUCHUNG - Process Engineering Equipment Handbook Episode 2 Part 5

Tham khảo tài liệu 'process engineering equipment handbook episode 2 part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Filters F-9 FIG. F-13 Series MT horizontal multitube filter. Source Peerless. are easily dropped and lost. For example a 60-in ID vessel made by this information source has only 20 removable parts not counting the filter cartridges as opposed to 235 parts in a conventional design. There are no support arm threads to become stripped and no support arms. This avoids the difficult job of removing a collapsed filter cartridge from a support arm. The design of the retainer assembly allows all maintenance work to be done through a small closure below with substantial savings in first cost as well as in man-hours in removing and resealing the closure. Gas filters are designed for both operating efficiency and clean-out efficiency. To make the cartridge replacing operation as quick and simple as possible a quick-demountable filter cartridge retainer assembly is used in all vessels of 30-in shell diameter and larger. The result is a substantial saving in both man-hours and down-time whenever cartridges are replaced. Not all foreign matter from the gas stream is deposited on the filter cartridges. In any gas filter there is a gradual buildup of rust scale and other gas line dirt on the inner surfaces of the shell especially at the bottom. This phenomenon is used by directing the incoming gas into a generously sized inlet chamber in Fig. F-13 where the abrupt drop in velocity allows the heavier particles to fall out of the gas stream by gravity before they reach the filter cartridges. Thus the filter cartridges dirt-holding capacity is used to best advantage in trapping the hard-to-catch fine particles. The material collected in the shell is removed from gas filters. There are no longitudinal support arms for the filter cartridges so that when the cartridges are removed the filter chamber in Fig. F-13 is empty of all structural parts. The standpipes that connect to the cartridge outlets are arranged in a square rather than a diagonal pattern with plenty of room between them .

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