Suspendable Filter Bag System
Inactive Publication Date: 2015-08-20
PRIMEX PROCESS SPECIALISTS
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention is a suspendable filter bag system that replaces the integral metal filter cap with a novel releasable hanger. The filter bag is composed of woven fabric and has a top, sides, and bottom including an opening at the bottom for receiving unfiltered flue gas. The hanger connects the loop of fabric to a bag house hook above it. The hanger has hooks that can be opened and closed to secure the bag to the hanger. The invention offers an improved design for replacing the metal filter cap with a flexible hanger, reducing stress concentration and allowing for easier removal and replacement of the filter bag.
Problems solved by technology
In the prior art, corrosion and subsequent failure of the filter cap typically causes irreparable filter bag damage, excessive particulate matter emission, unplanned decreases in power plant output, and excessive maintenance costs.
Moreover, replacement of the integral filter cap (as a preventive maintenance action) typically necessitates replacement of the entire filter bag assembly, thereby adding to corrective maintenance costs.
Method used
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Embodiment Construction
[0018]A suspendable filtration device in accordance with an embodiment of the invention is illustrated in FIG. 1 and is designated generally be reference numeral 12. The device 12 generally comprises a filter bag 1 and a suspension hangar 14. In the embodiment shown in FIG. 1-3, the filtration device is shown suspended from the ceiling 20 of a bag house by a ceiling hook 7.
[0019]The suspension hanger 14 comprises an elongate rigid member 5, which is formed into a triangular shape having two side arms 5a and a cross member 5b. As best seen in FIG. 7, the side arms 5a are integrally connected at an upper vertex 24. The cross member 5b is integrally formed with one side member at a lower vertex 26 and is oriented generally parallel to the plane of the bag house ceiling 20 when properly suspended.
[0020]The hangar 5 is not integrally formed at the third vertex. Instead, the hangar 5 includes a releasable joint 8, which releasably connects the free ends of the rigid member 5. In this embo...
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Abstract
A bag house filter bag is suspended vertically from a separable hanger. The filter bag has a closure at the top, which is constructed by a series of tucks and folds. The closure also provides a support loop for engagement with the hanger. The filter bag is constructed mainly of woven fabric formed into a cylinder. The folding and stitching pattern of the fabric at the top end enables the bag to transition from linear at the site of the support loop to cylindrical with an even distribution of stress on the fabric. The hanger includes a cross member and a surrounding tube to reduce specific stress on the fabric. The hanger has a removable joint opening clasp at one end of the cross member to enable rapid insertion and removal of the hanger from within the suspension tube without contact, removal or other disturbance of the filter bag.
Description
RELATED APPLICATION[0001]This application is a non-provisional of U.S. provisional patent No. 61 / 942,445 filed on Feb. 20, 2014 entitled “Filter Bag Suspension System,” from which priority is claimed.FIELD OF THE INVENTION[0002]The present invention relates to flue gas filtration at power generating facilities. More specifically, this invention relates to “dry” or “semi-dry” flue-gas desulfurization (“FGD”) systems that include a “reverse air” type fabric filter to remove particulate matter from the flue gas prior to atmospheric emission.BACKGROUND OF THE INVENTION[0003]Compliance with environmental regulations at facilities equipped with dry or semi-dry FGD processes requires removal of particulate matter from the flue gas at a location between the FGD process and emission point. The particulate matter entrained in the flue gas at this location typically consists of solid by-products of the combustion and FGD process including fly ash, partially-burned fuel, and various compounds o...
Claims
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Login to View More IPC IPC(8): B01D46/02B01D46/00
CPCB01D46/0005B01D46/02B01D46/0001
Inventor NICHOLSON, STEWARTQUINLAN, MARY A.
Owner PRIMEX PROCESS SPECIALISTS