Patents by Inventor Norman D. Nelson
Norman D. Nelson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9896308Abstract: An overhead catalyst loading device eliminates the need for lower flanges of the overhead catalyst structural support frame or dedicated overhead trolley beams to prevent ash build up collecting on a selective catalytic reactor (SCR) reactor box and provides an advantageous electric hydraulic lifting mechanism suitable for integration into a SCR device. The overall width of the SCR device is reduced since the structural support frame in the SCR device fits in the gaps between catalyst blocks. The overhead electric hydraulic catalyst loading device also minimizes the chance of injury during catalyst block installation by using an electric hydraulic actuated lifting mechanism consisting of spacers and structural telescopic members which may comprise holes and pins for height adjustment to allow for loading and unloading catalyst blocks into and out of a SCR device. Methods of lifting and loading and unloading a catalyst block are also presented therein.Type: GrantFiled: October 6, 2014Date of Patent: February 20, 2018Assignee: THE BABCOCK & WILCOX COMPANYInventors: Norman D Nelson, Adam N DePizzo, Walter L Calhoun
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Patent number: 9457826Abstract: An overhead catalyst loading device eliminates the need for lower flanges of the overhead catalyst structural support frame or dedicated overhead trolley beams to prevent ash build up collecting on a SCR reactor box and provides an advantageous lifting mechanism suitable for integration into a SCR device. The overall width of the SCR device is reduced since the structural support frame in the SCR device fits in the gaps between catalyst blocks. No extra space is required on either side of the catalyst blocks for the structural support frame. The overhead catalyst loading device also minimizes the chance of injury during catalyst block installation by using a hydraulic actuated lifting mechanism for loading and unloading catalyst blocks into and out of a SCR device. Methods of lifting and loading and unloading a catalyst block are also presented therein.Type: GrantFiled: August 29, 2013Date of Patent: October 4, 2016Assignee: The Babcock & Wilcox CompanyInventors: Norman D Nelson, Adam N DePizzo
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Publication number: 20150098772Abstract: An overhead catalyst loading device eliminates the need for lower flanges of the overhead catalyst structural support frame or dedicated overhead trolley beams to prevent ash build up collecting on a selective catalytic reactor (SCR) reactor box and provides an advantageous electric hydraulic lifting mechanism suitable for integration into a SCR device. The overall width of the SCR device is reduced since the structural support frame in the SCR device fits in the gaps between catalyst blocks. The overhead electric hydraulic catalyst loading device also minimizes the chance of injury during catalyst block installation by using an electric hydraulic actuated lifting mechanism consisting of spacers and structural telescopic members which may comprise holes and pins for height adjustment to allow for loading and unloading catalyst blocks into and out of a SCR device. Methods of lifting and loading and unloading a catalyst block are also presented therein.Type: ApplicationFiled: October 6, 2014Publication date: April 9, 2015Inventors: Norman D. Nelson, Adam N. DePizzo, Walter L. Calhoun
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Publication number: 20140227073Abstract: An overhead catalyst loading device eliminates the need for lower flanges of the overhead catalyst structural support frame or dedicated overhead trolley beams to prevent ash build up collecting on a SCR reactor box and provides an advantageous lifting mechanism suitable for integration into a SCR device. The overall width of the SCR device is reduced since the structural support frame in the SCR device fits in the gaps between catalyst blocks. No extra space is required on either side of the catalyst blocks for the structural support frame. The overhead catalyst loading device also minimizes the chance of injury during catalyst block installation by using a hydraulic actuated lifting mechanism for loading and unloading catalyst blocks into and out of a SCR device. Methods of lifting and loading and unloading a catalyst block are also presented therein.Type: ApplicationFiled: August 29, 2013Publication date: August 14, 2014Inventors: Norman D. Nelson, Adam N DePizzo
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Patent number: 8136851Abstract: An apparatus and method providing a quick-release latch mechanism for a walled enclosure access door. The latch mechanism includes a striker with one end slidably inserted into the enclosure and the other end located outside the enclosure. A keeper is located within the enclosure and adapted to releasably engage and be captively held by the striker when the access door is in the closed position. If necessary, the access door can be readily unlatched from within the enclosure by manually rotating the keeper away from the enclosure wall to disengage and cause removal of the striker as the access door is being manually pushed open from within the enclosure.Type: GrantFiled: January 22, 2009Date of Patent: March 20, 2012Inventor: Norman D. Nelson
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Patent number: 7842251Abstract: The present invention generally relates to devices for diverting contaminants into catalyst blocks; and in particular to devices for diverting particulate matter such as powdered and/or solid contaminants away from spaces around and between catalyst blocks.Type: GrantFiled: September 7, 2007Date of Patent: November 30, 2010Inventors: Norman D Nelson, George D. Burges
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Publication number: 20100181781Abstract: An apparatus and method providing a quick-release latch mechanism for a walled enclosure access door. The latch mechanism includes a striker with one end slidably inserted into the enclosure and the other end located outside the enclosure. A keeper is located within the enclosure and adapted to releasably engage and be captively held by the striker when the access door is in the closed position. If necessary, the access door can be readily unlatched from within the enclosure by manually rotating the keeper away from the enclosure wall to disengage and cause removal of the striker as the access door is being manually pushed open from within the enclosure.Type: ApplicationFiled: January 22, 2009Publication date: July 22, 2010Inventor: Norman D. Nelson
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Publication number: 20090065414Abstract: The present invention generally relates to devices for diverting contaminants into catalyst blocks; and in particular to devices for diverting particulate matter such as powdered and/or solid contaminants away from spaces around and between catalyst blocks.Type: ApplicationFiled: September 7, 2007Publication date: March 12, 2009Inventors: Norman D. Nelson, George D. Burgess
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Patent number: 6613133Abstract: A spray level arrangement for spraying a liquid absorbent into flue gas flowing through a flue gas desulfurization absorber tower having a shell, includes a pair of elongated headers each having an inlet end for receiving liquid absorbent outside the shell, and an opposite end supported by a shell support at the inner surface of the shell. Each header extends through a penetration port of the shell and into the interior of the shell for supplying the liquid absorbent to the tower. A plurality of elongated branch lines are secured to each header and extend within the tower, each branch line having a supply end connected to the header and an opposite end supported on their own shell supports at the inner surface of the shell. A plurality of nozzles are secured to each branch. The nozzles are configured to spray the liquid absorbent into the flue gas within the tower. A beam in the shell has straps for further supporting the headers in the shell, if required.Type: GrantFiled: October 1, 2001Date of Patent: September 2, 2003Assignee: The Babcock & Wilcox CompanyInventors: Edward J. Piaskowski, Norman D. Nelson
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Publication number: 20030061940Abstract: A spray level arrangement for spraying a liquid absorbent into flue gas flowing through a flue gas desulfurization absorber tower having a shell, includes a pair of elongated headers each having an inlet end for receiving liquid absorbent outside the shell, and an opposite end supported by a shell support at the inner surface of the shell. Each header extends through a penetration port of the shell and into the interior of the shell for supplying the liquid absorbent to the tower. A plurality of elongated branch lines are secured to each header and extend within the tower, each branch line having a supply end connected to the header and an opposite end supported on their own shell supports at the inner surface of the shell. A plurality of nozzles are secured to each branch. The nozzles are configured to spray the liquid absorbent into the flue gas within the tower. A beam in the shell has straps for further supporting the headers in the shell, if required.Type: ApplicationFiled: October 1, 2001Publication date: April 3, 2003Inventors: Edward J. Piaskowski, Norman D. Nelson
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Patent number: 6494255Abstract: A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas passages. The first flue gas passage created by the divider plate merely conveys the hot flue gas through the inlet plenum and into flues which convey the flue gas to the new equipment. Return flues convey the flue gas back to the second flue gas passage created in the inlet plenum which, in turn, conveys the flue gas into the tubular air heater heat exchanger tubes. By taking advantage of the large size of a conventional air heater gas inlet plenum, the first and second flue gas passages created by the divider plate still have sufficient cross sectional area so that acceptable flue gas velocities are preserved.Type: GrantFiled: March 19, 2002Date of Patent: December 17, 2002Assignee: The Babcock & Wilcox CompanyInventors: Paul James Lieb, Edward J. Piaskowski, Norman D. Nelson
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Publication number: 20020096316Abstract: A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas passages. The first flue gas passage created by the divider plate merely conveys the hot flue gas through the inlet plenum and into flues which convey the flue gas to the new equipment. Return flues convey the flue gas back to the second flue gas passage created in the inlet plenum which, in turn, conveys the flue gas into the tubular air heater heat exchanger tubes. By taking advantage of the large size of a conventional air heater gas inlet plenum, the first and second flue gas passages created by the divider plate still have sufficient cross sectional area so that acceptable flue gas velocities are preserved.Type: ApplicationFiled: March 19, 2002Publication date: July 25, 2002Inventors: Paul James Lieb, Edward J. Piaskowski, Norman D. Nelson
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Patent number: 6405791Abstract: A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas passages. The first flue gas passage created by the divider plate merely conveys the hot flue gas through the inlet plenum and into flues which convey the flue gas to the new equipment. Return flues convey the flue gas back to the second flue gas passage created in the inlet plenum which, in turn, conveys the flue gas into the tubular air heater heat exchanger tubes. By taking advantage of the large size of a conventional air heater gas inlet plenum, the first and second flue gas passages created by the divider plate still have sufficient cross sectional area so that acceptable flue gas velocities are preserved.Type: GrantFiled: July 22, 1999Date of Patent: June 18, 2002Inventors: Paul James Lieb, Edward J. Piaskowski, Norman D. Nelson
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Patent number: 6036756Abstract: An improvement in a center inlet type scrubber that retrofit the scrubber with a perforated tray made up of rectangular or partially rectangular sections supported on beam supports in the annulus of the scrubber. The supports can be modified to form turning vanes or additional turning vanes can be employed. One or more perforated trays may be installed in the annulus to help correct the problem.Type: GrantFiled: January 13, 1998Date of Patent: March 14, 2000Assignee: The Babcock & Wilcox CompanyInventors: Wadie F. Gohara, Norman D. Nelson
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Patent number: 5391222Abstract: Discharge electrode wires are arranged between parallel discharge tubes by attaching one end of the discharge electrode wire to an end clip within the frame of an electrostatic precipitator having rows of collecting electrode plates. The opposite end of the discharge electrode wire is detachably connected with an in-line spring at one end of the spring. The opposite end of the in-line spring is detachably connected with another end clip. The end clips are detachably engagable with the tubes of the frame and the discharge electrode wire is arranged between parallel tubes by attaching one end clip to one tube and extending the discharge electrode wire through use of the in-line spring in order to attach the second end clip to a parallel frame tube. This arrangement allows for easy access and removal of a damaged discharge electrode wire.Type: GrantFiled: April 15, 1993Date of Patent: February 21, 1995Assignee: The Babcock & Wilcox CompanyInventors: Norman D. Nelson, Robert W. Kronenberger
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Patent number: 5271873Abstract: A method and apparatus for supporting headers within a tower from adjacent headers thereby reducing the amount of support members needed. In this configuration, the headers, which extend from opposing sides of the tower, are interspaced within the same generally horizontal plane in the tower. Support for the cantilevered end of each header is supplied by the self-supporting capabilities of adjacent headers near their support point with the tower wall. This significantly reduces the loaded span of support members to the distance between such adjacent headers as well as reduces the load upon such support member.Type: GrantFiled: May 21, 1992Date of Patent: December 21, 1993Assignee: The Babcock & Wilcox CompanyInventors: Norman D. Nelson, Edward J. Piaskowski