公开(公告)号：US09114350B2

公开(公告)日：2015-08-25

申请号：US13712491

申请日：2012-12-12

Applicant: The Southern Company

Inventor： Guohai Liu ,  Pannalal Vimalchand ,  WanWang Peng ,  Alexander Bonsu

IPC: B01D53/14 ,  B01D53/18 ,  B01D53/62 ,  B01D53/96

CPC classification number: B01D53/1425 ,  B01D53/1475 ,  B01D53/18 ,  B01D53/62 ,  B01D53/96 ,  B01D2257/504 ,  B01D2258/0283 ,  Y02C10/04 ,  Y02C10/06

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20140158941A1

公开(公告)日：2014-06-12

申请号：US14102327

申请日：2013-12-10

Applicant: Southern Company

Inventor： Guohai Liu ,  Pannalal Vimalchand ,  WanWang Peng

IPC: C10K3/02

CPC classification number: C10J3/482 ,  C01B3/30 ,  C01B2203/0277 ,  C01B2203/04 ,  C01B2203/049 ,  C10J3/721 ,  C10J2300/093 ,  C10J2300/0956 ,  C10J2300/0976 ,  C10J2300/0993 ,  C10J2300/1807 ,  C10K3/005 ,  Y02E20/18 ,  Y02P20/125

Abstract: A second stage gasification unit in a staged gasification integrated process flow scheme and operating methods are disclosed to gasify a wide range of low reactivity fuels. The inclusion of second stage gasification unit operating at high temperatures closer to ash fusion temperatures in the bed provides sufficient flexibility in unit configurations, operating conditions and methods to achieve an overall carbon conversion of over 95% for low reactivity materials such as bituminous and anthracite coals, petroleum residues and coke. The second stage gasification unit includes a stationary fluidized bed gasifier operating with a sufficiently turbulent bed of predefined inert bed material with lean char carbon content. The second stage gasifier fluidized bed is operated at relatively high temperatures up to 1400° C. Steam and oxidant mixture can be injected to further increase the freeboard region operating temperature in the range of approximately from 50 to 100° C. above the bed temperature.

Abstract translation: 公开了分级气化一体化工艺流程图和操作方法中的第二阶段气化单元以气化各种低反应性燃料。 包含第二阶段气化单元在较高温度下工作，接近床层的灰熔融温度，为单体配置，操作条件和方法提供了足够的灵活性，以实现低反应性材料如沥青和无烟煤的总体转化率超过95％ ，石油残渣和焦炭。 第二阶段气化单元包括固定的流化床气化器，其操作有具有贫碳含量的预定惰性床材料的充分湍流床。 第二级气化器流化床在高达1400℃的较高温度下操作。可以注入蒸汽和氧化剂混合物，以进一步将干舷区域操作温度提高到高于床温度的约50至100℃的范围内。