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公开(公告)号：US10197272B2
公开(公告)日：2019-02-05
申请号：US15272479
申请日：2016-09-22
Applicant: Fuel Tech, Inc.
Inventor： Ian Saratovsky , Scott K. Bohlen , Chrisopher R. Smyrniotis , Kent W. Schulz , Emelito P. Rivera
Abstract: The description relates to a process for reducing acid plume from stacks from coal-fired combustors operating at varying loads, which have typically been treated by back-end calcium carbonate (limestone) which has not been able to effectively control visible acid plume as power is ramped up from low load. According to the process, as high sulfur and high iron coals are burned in a combustor, magnesium hydroxide slurry is introduced into hot combustion gases in or near the combustion zone. And, during ramp up to high load from a period of operation at low load, additional magnesium hydroxide is introduced into an intermediate-temperature zone.
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公开(公告)号：US20180312773A1
公开(公告)日：2018-11-01
申请号：US15967652
申请日：2018-05-01
Applicant: Fuel Tech, Inc.
Inventor： Christopher R. Smyrniotis , Ian Saratovsky
Abstract: The description relates to controlling slagging and/or fouling in biomass burning furnaces. Combustion of such a biomass the fuel with air produces combustion gases containing sodium and/or potassium compositions, and the combustion gases are treated by contacting the combustion gases with kaolin and aluminum hydroxide. At least one of the kaolin and aluminum hydroxide can be introduced with the fuel, in a combustion chamber, with reburn fuel or with overfire air. For fuels also high in zinc and/or heavy metals, magnesium hydroxide is introduced into the combustion chamber or following heat exchangers.
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Patent Agency Ranking
公开(公告)号：US20170089572A1
公开(公告)日：2017-03-30
申请号：US15272479
申请日：2016-09-22
Applicant: Fuel Tech, Inc.
Inventor： Ian Saratovsky , Scott K. Bohlen , Chrisopher R. Smyrniotis , Kent W. Schulz , Emelito P. Rivera
CPC classification number: F23J15/003 , B01D53/502 , B01D53/64 , B01D53/8609 , B01D53/8628 , B01D53/8631 , B01D2251/402 , B01D2255/2047 , B01D2257/302 , B01D2257/404 , B01D2257/602 , B01D2258/0283 , F23J7/00 , F23J15/04 , F23J2219/10 , F23J2219/50 , F23J2900/15004
Abstract: The description relates to a process for reducing acid plume from stacks from coal-fired combustors operating at varying loads, which have typically been treated by back-end calcium carbonate (limestone) which has not been able to effectively control visible acid plume as power is ramped up from low load. According to the process, as high sulfur and high iron coals are burned in a combustor, magnesium hydroxide slurry is introduced into hot combustion gases in or near the combustion zone. And, during ramp up to high load from a period of operation at low load, additional magnesium hydroxide is introduced into an intermediate-temperature zone.
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公开(公告)号：US20150110698A1
公开(公告)日：2015-04-23
申请号：US14578828
申请日：2014-12-22
Applicant: Fuel Tech, Inc.
Inventor： Christopher R. Smyrniotis , Kent W. Schulz , Emelito P. Rivera , Ian Saratovsky , Vasudeo S. Gavaskar
CPC classification number: B01D53/68 , B01D53/502 , B01D53/508 , B01D53/64 , B01D53/685 , B01D53/80 , B01D2251/402 , B01D2251/404 , B01D2251/80 , B01D2253/112 , B01D2253/304 , B01D2257/2045 , B01D2257/302 , B01D2258/0283 , B01J20/0237 , B01J20/0274 , B01J20/0281 , B01J20/0296 , B01J20/041 , B01J20/28004 , B01J2220/42
Abstract: Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl and/or Hg in a process employing a combination of a lime-based sorbent, in particular hydrated lime and/or dolomitic hydrated lime, and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SOx and/or HCl and/or Hg-containing gases with a short but effective residence time at a temperature effective to provide significant sulfur dioxide and/or HCl and/or Hg reductions with high rates of reaction and sorbent utilization. The once-through, dry process can advantageously introduce the sorbent and sorbent doping agent dry or preferably as a slurry to enable uniform treatment. Preferred sorbent doping agents include water-soluble or water-dispersible copper and/or iron compositions which can be heated to an active form in situ by the flue gases being treated.
Abstract translation: 提供了干法，装置，组合物和系统，用于在使用基于石灰的吸附剂，特别是熟石灰和/或硫酸的组合的方法中减少硫氧化物，特别是二氧化硫和/或HCl和/或Hg的排放， 或白云石熟石灰，以及施用吸附剂掺杂剂，以实现承载SOx和/或HCl和/或含Hg气体的通道的三维横截面的覆盖，所述通道在有效提供的温度下具有短但有效的停留时间 显着的二氧化硫和/或HCl和/或Hg减少，反应速率高和吸附剂利用率高。 一次性干燥方法可以有利地将吸附剂和吸附剂掺杂剂引入干燥或优选作为浆料以使得能够均匀地处理。 优选的吸附剂掺杂剂包括可被待处理的烟道气原位加热到活性形式的水溶性或水分散性铜和/或铁组合物。
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公开(公告)号：US20180327683A1
公开(公告)日：2018-11-15
申请号：US15967663
申请日：2018-05-01
Applicant: Fuel Tech, Inc.
Inventor： Christopher R. Smyrniotis , Ian Saratovsky
CPC classification number: C10L10/06 , C10L5/44 , C10L5/442 , C10L5/445 , C10L5/46 , C10L5/48 , C10L10/04 , C10L10/14 , C10L2200/0213 , C10L2200/0469 , C10L2200/0484 , F23G2200/00 , F23J7/00 , F23J9/00 , F23K2201/501
Abstract: The description relates to controlling slagging and/or fouling in biomass burning furnaces. Combustion of such a biomass the fuel with air produces combustion gases containing sodium and/or potassium compositions, and the combustion gases are treated by contacting the combustion gases with kaolin and aluminum hydroxide. At least one of the kaolin and aluminum hydroxide can be introduced with the fuel, in a combustion chamber, with reburn fuel or with overfire air. For fuels also high in zinc and/or heavy metals, magnesium hydroxide is introduced into the combustion chamber or following heat exchangers.
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公开(公告)号：US09718025B2
公开(公告)日：2017-08-01
申请号：US14870366
申请日：2015-09-30
Applicant: FUEL TECH, INC.
Inventor： Christopher R. Smyrniotis , Kent W. Schulz , Emelito P. Rivera , Ian Saratovsky , Vasudeo S. Gavaskar
CPC classification number: B01D53/68 , B01D53/507 , B01D53/64 , B01D53/77 , B01D2251/60 , B01D2251/80 , B01D2257/2045 , B01D2257/302 , B01D2257/602 , B01D2258/0233 , F23J15/003 , F23J2215/20 , F23J2215/30 , F23J2215/60 , F27B7/2025 , F27D17/008
Abstract: The description relates to reducing hydrochloric acid in cement kilns. In one aspect, an aqueous copper-based chloride remediator is introduced into contact with combustion gases from a cement kiln. Injection is made into a defined introduction zone under conditions effective for HCl emissions control wherein the temperature is within the range of from 300° F. to 800° F., preferably from 550° F. to 750° F. The resulting gases are discharged from the defined zone following sufficient reaction time to reduce the HCl concentration in the gases.
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17.发明授权Dry processes, apparatus, compositions and systems for reducing sulfur oxides and HCI 有权用于还原硫氧化物和HCl的干法，装置，组合物和系统公开(公告)号：US08916120B2
公开(公告)日：2014-12-23
申请号：US13854361
申请日：2013-04-01
Applicant: Fuel Tech, Inc.
Inventor： Christopher R. Smyrniotis , Kent W. Schulz , Emelito P. Rivera , Mingming Fang , Ian Saratovsky
CPC classification number: B01D53/508 , B01D53/10 , B01D53/685 , B01D53/80 , B01D2251/402 , B01D2251/404 , B01D2253/112 , B01D2253/304 , B01D2253/306 , B01D2255/20738 , B01D2255/20761 , B01D2257/2045 , B01D2257/302 , B01D2258/0283 , B01J20/043 , B01J20/223 , F23J15/003 , F23J2215/20 , F23J2219/50
Abstract: Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl in a process employing a combination of a dolomite hydrate sorbent and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SOx and/or HCl —containing gases with a short but effective residence time at a temperature effective to provide significant sulfur dioxide and/or HCl reductions with high rates of reaction and sorbent utilization. The once-through, dry process can advantageously introduce the sorbent and sorbent doping agent dry or preferably as a slurry to enable uniform treatment. Preferred sorbent doping agents include water-soluble or water-dispersible copper and/or iron compositions which can be heated to an active form in situ by the flue gases being treated.
Abstract translation: 提供了干法，装置，组合物和系统，用于在使用白云石水合物吸附剂和吸附剂掺杂剂的组合的方法中减少硫氧化物，特别是二氧化硫和/或HCl的排放，以实现覆盖三 承载含有SOx和/或含HCl气体的通道的三维横截面，其具有短的但有效的停留时间，其温度有效地以高反应速率和吸附剂利用率提供显着的二氧化硫和/或HCl。 一次性干燥方法可以有利地将吸附剂和吸附剂掺杂剂引入干燥或优选作为浆料以使得能够均匀地处理。 优选的吸附剂掺杂剂包括可被待处理的烟道气原位加热到活性形式的水溶性或水分散性铜和/或铁组合物。
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