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公开(公告)号：US20140008580A1
公开(公告)日：2014-01-09
申请号：US13936457
申请日：2013-07-08
申请人： The Southern Company
发明人： Guohai Liu , Pannalal Vimalchand , WanWang Peng
IPC分类号： C10J3/56
CPC分类号： C10J3/56 , C10J3/721 , C10J3/84 , C10J2300/093 , C10J2300/094 , C10J2300/0976 , C10J2300/1838 , C10J2300/1846 , C10J2300/1884 , C10J2300/1892 , C10K1/024 , C10K1/026 , C10K3/005
摘要： This invention relates to gasification of high ash bituminous coals that have high ash fusion temperatures. The ash content can be in 15 to 45 weight percent range and ash fusion temperatures can be in 1150° C. to 1500° C. range as well as in excess of 1500° C. In a preferred embodiment, such coals are dealt with a two stage gasification process—a relatively low temperature primary gasification step in a circulating fluidized bed transport gasifier followed by a high temperature partial oxidation step of residual char carbon and small quantities of tar. The system to process such coals further includes an internally circulating fluidized bed to effectively cool the high temperature syngas with the aid of an inert media and without the syngas contacting the heat transfer surfaces. A cyclone downstream of the syngas cooler, operating at relatively low temperatures, effectively reduces loading to a dust filtration unit. Nearly dust- and tar-free syngas for chemicals production or power generation and with over 90%, and preferably over about 98%, overall carbon conversion can be achieved with the preferred process, apparatus and methods outlined in this invention.
摘要翻译： 本发明涉及具有高灰熔融温度的高灰烟煤气化。 灰分含量可以在15至45重量％范围内，灰分熔化温度可以在1150℃至1500℃的范围以及超过1500℃。在一个优选的实施方案中，这种煤被处理为 二阶段气化过程 - 循环流化床输送气化器中的相对较低温度的一次气化步骤，接着是残留焦碳和少量焦油的高温部分氧化步骤。 处理这种煤的系统还包括内部循环流化床，借助惰性介质有效地冷却高温合成气，而不使合成气与传热表面接触。 合成气冷却器下游的旋风分离器在相对低的温度下运行，有效地减少了灰尘过滤装置的负荷。 使用本发明概述的优选方法，装置和方法可以实现化学品生产或发电的几乎无灰尘和焦油合成气，并且具有超过90％，优选超过约98％的总碳转化率。
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公开(公告)号：US09114350B2
公开(公告)日：2015-08-25
申请号：US13712491
申请日：2012-12-12
申请人： The Southern Company
发明人： Guohai Liu , Pannalal Vimalchand , WanWang Peng , Alexander Bonsu
CPC分类号： B01D53/1425 , B01D53/1475 , B01D53/18 , B01D53/62 , B01D53/96 , B01D2257/504 , B01D2258/0283 , Y02C10/04 , Y02C10/06
摘要： A regenerator that can handle rich loaded chemical solvent containing precipitated absorption reaction products is disclosed. The invention is particularly suitable for separating CO2 from large gas streams that are typical of power plant processes. The internally circulating liquid stream in the regenerator (ICLS regenerator) rapidly heats-up the in-coming rich solvent stream in a downcomer standpipe as well as decreases the overall concentration of CO2 in the mixed stream. Both these actions lead to dissolution of precipitates. Any remaining precipitate further dissolves as heat is transferred to the mixed solution with an inverted bayonet tube heat exchanger in the riser portion of the regenerator. The evolving CO2 bubbles in the riser portion of the regenerator lead to substantial gas hold-up and the large density difference between the solutions in the downcomer standpipe and riser portions promotes internal circulation of the liquid stream in the regenerator. As minor amounts of solvent components present in the exit gas stream are condensed and returned back to the regenerator, pure CO2 gas stream exits the disclosed regenerator and condenser system.
摘要翻译： 公开了一种能够处理含有沉淀的吸收反应产物的富集化学溶剂的再生器。 本发明特别适用于从典型的发电厂工艺的大气流中分离出二氧化碳。 再生器（ICLS再生器）中的内部循环液体流快速加热下降管立管中的未来富溶剂流，并降低混合流中CO 2的总浓度。 这些行为都导致沉淀物的溶解。 任何剩余的沉淀物进一步溶解，因为在再生器的提升管部分中用反转的卡口式热交换器将热量转移到混合溶液中。 在再生器的提升管部分中演变的二氧化碳气泡导致显着的气体滞留，并且降液管立管和提升管部分中的溶液之间的大的密度差促进了再生器中液体流的内部循环。 由于存在于出口气流中的少量溶剂组分被冷凝并返回到再生器中，纯的CO 2气流离开所公开的再生器和冷凝器系统。
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公开(公告)号：US09181502B2
公开(公告)日：2015-11-10
申请号：US13936457
申请日：2013-07-08
申请人： The Southern Company
发明人： Guohai Liu , Pannalal Vimalchand , WanWang Peng
CPC分类号： C10J3/56 , C10J3/721 , C10J3/84 , C10J2300/093 , C10J2300/094 , C10J2300/0976 , C10J2300/1838 , C10J2300/1846 , C10J2300/1884 , C10J2300/1892 , C10K1/024 , C10K1/026 , C10K3/005
摘要： This invention relates to gasification of high ash bituminous coals that have high ash fusion temperatures. The ash content can be in 15 to 45 weight percent range and ash fusion temperatures can be in 1150° C. to 1500° C. range as well as in excess of 1500° C. In a preferred embodiment, such coals are dealt with a two stage gasification process—a relatively low temperature primary gasification step in a circulating fluidized bed transport gasifier followed by a high temperature partial oxidation step of residual char carbon and small quantities of tar. The system to process such coals further includes an internally circulating fluidized bed to effectively cool the high temperature syngas with the aid of an inert media and without the syngas contacting the heat transfer surfaces. A cyclone downstream of the syngas cooler, operating at relatively low temperatures, effectively reduces loading to a dust filtration unit. Nearly dust- and tar-free syngas for chemicals production or power generation and with over 90%, and preferably over about 98%, overall carbon conversion can be achieved with the preferred process, apparatus and methods outlined in this invention.
摘要翻译： 本发明涉及具有高灰熔融温度的高灰烟煤气化。 灰分含量可以在15至45重量％范围内，灰分熔化温度可以在1150℃至1500℃的范围以及超过1500℃。在一个优选的实施方案中，这种煤被处理为 二阶段气化过程 - 循环流化床输送气化器中的相对较低温度的一次气化步骤，接着是残留焦碳和少量焦油的高温部分氧化步骤。 处理这种煤的系统还包括内部循环流化床，借助惰性介质有效地冷却高温合成气，而不使合成气与传热表面接触。 合成气冷却器下游的旋风分离器在相对低的温度下运行，有效地减少了灰尘过滤装置的负荷。 使用本发明概述的优选方法，装置和方法可以实现化学品生产或发电的几乎无灰尘和焦油合成气，并且具有超过90％，优选超过约98％的总碳转化率。
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公开(公告)号：US20130145934A1
公开(公告)日：2013-06-13
申请号：US13712491
申请日：2012-12-12
申请人： The Southern Company
发明人： Guohai Liu , Pannalal Vimalchand , WanWang Peng , Alexander Bonsu
IPC分类号： B01D53/14
CPC分类号： B01D53/1425 , B01D53/1475 , B01D53/18 , B01D53/62 , B01D53/96 , B01D2257/504 , B01D2258/0283 , Y02C10/04 , Y02C10/06
摘要： A regenerator that can handle rich loaded chemical solvent containing precipitated absorption reaction products is disclosed. The invention is particularly suitable for separating CO2 from large gas streams that are typical of power plant processes. The internally circulating liquid stream in the regenerator (ICLS regenerator) rapidly heats-up the in-coming rich solvent stream in a downcomer standpipe as well as decreases the overall concentration of CO2 in the mixed stream. Both these actions lead to dissolution of precipitates. Any remaining precipitate further dissolves as heat is transferred to the mixed solution with an inverted bayonet tube heat exchanger in the riser portion of the regenerator. The evolving CO2 bubbles in the riser portion of the regenerator lead to substantial gas hold-up and the large density difference between the solutions in the downcomer standpipe and riser portions promotes internal circulation of the liquid stream in the regenerator. As minor amounts of solvent components present in the exit gas stream are condensed and returned back to the regenerator, pure CO2 gas stream exits the disclosed regenerator and condenser system.
摘要翻译： 公开了一种能够处理含有沉淀的吸收反应产物的富集化学溶剂的再生器。 本发明特别适用于从典型的发电厂工艺的大气流中分离出二氧化碳。 再生器（ICLS再生器）中的内部循环液体流快速加热下降管立管中的未来富溶剂流，并降低混合流中CO 2的总浓度。 这些行为都导致沉淀物的溶解。 任何剩余的沉淀物进一步溶解，因为在再生器的提升管部分中用反转的卡口式热交换器将热量转移到混合溶液中。 在再生器的提升管部分中演变的二氧化碳气泡导致显着的气体滞留，并且降液管立管和提升管部分中的溶液之间的大的密度差促进了再生器中液体流的内部循环。 由于存在于出口气流中的少量溶剂组分被冷凝并返回到再生器中，纯的CO 2气流离开所公开的再生器和冷凝器系统。
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