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公开(公告)号：US11603989B2
公开(公告)日：2023-03-14
申请号：US16761701
申请日：2018-12-12
发明人： Pekka Lehtonen , Tero Heino
摘要： A circulating fluidized bed boiler, comprising a furnace, a loopseal, and a loopseal heat exchanger arranged in the loopseal. The loopseal heat exchanger comprises at least an inlet chamber, a bypass chamber, and a first heat exchange chamber, heat exchanger pipes arranged in the first heat exchange chamber, and a primary particle outlet for letting out bed material from the first heat exchange chamber. The primary particle outlet has at least a first part and a second part separated from each other by a barrier element in such a way that the first part of the primary particle outlet has a first height and a first width, wherein a ratio of the first height to the first width is less than 0.5 or more than 2. Use of the circulating fluidized bed boiler such that fluidizing gas and bed material are let out from the first heat exchange chamber via the primary particle outlet.
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公开(公告)号：US10995946B2
公开(公告)日：2021-05-04
申请号：US16487075
申请日：2017-06-13
发明人： Lianhua Zhang , Baijin Chen , Ji Wang , Hui Zhang , Yunlong Qiu
摘要： A cyclone separator is disclosed. The cyclone separator includes a housing that forms a separation chamber, a central cylinder made of a non-metal refractory material and located inside the housing, and a support structure that supports the central cylinder. The separation chamber is divided by the central cylinder into an outer separation chamber and an inner separation chamber. The separation chamber includes an inlet and an outlet that are in communication with the outer and inner separation chambers, respectively. The support structure comprises a hollowed-out upwardly-arched structure that is connected to an inner wall of the separation chamber by continuous pouring or masonry, with an arch face of the support structure being connected to a lower end of the central cylinder to support the central cylinder. The central cylinder is connected to both the housing and the supporting structure by continuous pouring or masonry.
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公开(公告)号：US10556805B2
公开(公告)日：2020-02-11
申请号：US16271407
申请日：2019-02-08
发明人： Aadesh Harale , Mourad Younes , Maytham Musawi
IPC分类号： C01F11/46 , C07C7/11 , B01D53/52 , B01J8/18 , B01J8/00 , B01J8/26 , C10L3/10 , C01B17/04 , C01B17/43 , C01B17/16 , F23C10/10 , B01D53/62
摘要： A process for recovering sulfur from a tail gas stream comprising the steps of providing a tail gas stream to a chemical looping combustion (CLC) unit, the tail gas stream comprising a sulfide component, providing an oxygen carrier to the CLC unit, the oxygen carrier comprising a calcium carbonate, providing an air stream to the CLC unit, the air stream comprising oxygen, and reacting the sulfide component in the CLC unit with the calcium compound and the air to produce a product effluent, the product effluent comprising calcium sulfate.
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公开(公告)号：US20190170345A1
公开(公告)日：2019-06-06
申请号：US15540608
申请日：2016-08-25
申请人： DOOSAN LENTJES GMBH
发明人： Nedim ÖZBEY , Oguzhan NARIN
IPC分类号： F23C10/10
摘要： The invention relates to a circulating fluidized bed apparatus, comprising a combustion chamber (CC) with at least one outlet port (OP) at its upper end (UE) to transfer a mixture of gas and solids from said combustion chamber (CC) into at least one subsequent separator (SP) and from there at least partially back into the combustor chamber, wherein the combustion chamber (CC) is ring-shaped, comprising an inner wall (IW) and an outer wall (OW), arranged at a distance to each other in a radial direction of the combustion chamber (CC), and at least two intermediate walls (SW), which extend between the inner wall (IW) and the outer wall (OW) and in spaced relationship in a circumferential direction of the combustion chamber (CC), thereby subdividing the combustion chamber (CC) into a corresponding number of sections (CO), arranged adjacent to each other in the circumferential direction of the combustion chamber (CC).
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公开(公告)号：US10011441B2
公开(公告)日：2018-07-03
申请号：US15086914
申请日：2016-03-31
发明人： Jonq-Hai Chiu
CPC分类号： B65G53/60 , B01J8/0025 , B01J8/1836 , B01J8/26 , B01J8/388 , B01J2208/00141 , B65G53/18 , F23C10/10 , F23C10/26 , F23C10/32 , F23C2900/10008
摘要： A system includes a standpipe for receiving a flow of solids therethrough, the standpipe having at least one inlet configured to receive a gas for decreasing a solids-to-gas ratio of the flow, a sealpot having an inlet fluidly coupled to the standpipe and an outlet fluidly coupled to a riser, the sealpot being configured to fluidize the solids received from the standpipe and to transport the solids to the riser, and a drain device fluidly coupled to an outlet in the standpipe, the outlet being located upstream from the inlet of the sealpot. The drain device is configured to remove the excess gas from the flow of solids within the standpipe to increase the solids-to-gas ratio of the flow prior to the solids entering the sealpot.
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公开(公告)号：US09927119B2
公开(公告)日：2018-03-27
申请号：US14425678
申请日：2013-09-25
发明人： Liyong Cao , Wei Fan , Qi Du , Pan Guo , Zhengning Liu , Yuan Zhang , Chunfei Zhang , Jiang Liu , Chunyun Hu , Xiaoguang Zhang , Yu Lei
CPC分类号： F23C10/10 , F22B37/025 , F23C6/02 , F23C10/005 , F23C10/22 , F23C10/26 , F23C10/32 , F23C2900/10005 , F23J2215/60 , F23K2201/505
摘要： A dual-bed system for preventing a boiler heating surface from being contaminated comprises a fluidized bed, a cyclone separator, a coal ash distributor, an ash-coal mixer, a lower pyrolysis bed, a return feeder and a cleaner, wherein the cyclone separator is connected with the upper lateral side of the fluidized bed; the inlet end of the coal ash distributor; the two outlets of the coal ash distributor are respectively connected with the inlet of the return feeder and the inlet of the ash-coal mixer; the outlet of the ash-coal mixer is connected with the inlet of the lower pyrolysis bed; the return feeder close to the lower lateral side of the fluidized bed is connected with the inlet on the lower lateral side of the fluidized bed; and the outlet of the cleaner is connected with the inlet on the lower lateral side of the fluidized bed.
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7.发明申请公开(公告)号：US20170321889A1
公开(公告)日：2017-11-09
申请号：US14900985
申请日：2015-02-04
发明人： JIANJUN NI , ZHEN YANG , NAN CHEN , JIE XIONG
CPC分类号： F23C10/10 , C10J3/54 , C10J3/56 , C10J3/721 , C10J3/84 , C10J2300/093 , C10J2300/0956 , C10K1/026 , C10K1/101 , C10K1/165 , C10K3/04 , F23C10/005 , Y02E20/18 , Y02E50/32
摘要： The present invention demonstrates a solid fuel grade gasification-combustion dual bed poly-generation system, comprising a combustion system, a gasification system, a synthesized gas cooling and purifying system and a synthesized gas methanization system. The combustion system is connected with the gasification system through a circulating material return system. The gasification system mainly adapts the circulating fluidized-bed combustion mode. The gasification system adapts the fluidized-bed incomplete gasification method and the generated semi-coke is returned to the combustion system for re-utilization. The synthesized gas purifying and cooling unit adapts water cycling and combustible recycling. The by-products, CO2 and steam, in the methanization unit can be recovered, so the maximum utilization rate of energy in this system is realized.
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公开(公告)号：US09784445B2
公开(公告)日：2017-10-10
申请号：US14646457
申请日：2013-10-09
发明人： Liyong Cao , Wei Fan , Qi Du , Pan Guo , Zhengning Liu , Jiang Liu , Yuan Zhang , Chunfei Zhang , Hongwei Hu , Yang Li , Xin Zhang
CPC分类号： F23C10/10 , F23C6/02 , F23C10/005 , F23C10/22 , F23C10/26 , F23C2900/10005 , F23J1/02 , F23J15/02
摘要： An external bed type double-fluidized bed system for preventing boiler contamination includes a fluidized bed combustion furnace, a cyclone separator, a coal ash distributor and a fluidized bed pyrolysis furnace. The fluidized bed combustion furnace is connected with the coal ash distributor, the coal ash distributor is connected with the coal ash inlet on a side wall of the fluidized bed combustion furnace through a return feeder with which the coal ash outlet of the fluidized bed pyrolysis furnace is also connected through an external bed, and the return feeder is connected with the fluidized bed combustion furnace. A fuel coal is pyrolyzed in the fluidized bed pyrolysis furnace at a temperature to volatize alkali chlorides into a pyrolysis gas, thereby reducing the content of the alkali chlorides contained in the coal in the fluidized bed combustion furnace and relieving the contamination to a convective heat-absorbing surface.
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9.发明授权公开(公告)号：US09772104B2
公开(公告)日：2017-09-26
申请号：US14412270
申请日：2013-12-24
发明人： Qinggang Lv , Ming Gao , Guoliang Song , Xiaofang Wang , Yunkai Sun , Dongyu Wang , Tuo Zhou
CPC分类号： F23C10/10 , F22B31/003 , F22B31/0061 , F22B31/0084 , F23C10/18 , F23C10/20
摘要： The present invention provides a circulating fluidized bed boiler, comprising: furnace side walls; a ceiling; an air distribution plate provided at a bottom of a furnace; and at least one air distribution cone provided on the air distribution plate, wherein each air distribution cone extends upwards from the air distribution plate into an interior of the furnace and has a shape gradually tapered in an extending direction, cone side walls which form the air distribution cone are provided with secondary air ports, the cone side walls are separated from the furnace side walls, and a furnace combustion space is formed and surrounded by the ceiling, the furnace side walls, the air distribution plate, and the cone side walls. The present invention further relates to an air distributor for a circulating fluidized bed boiler, the air distributor being provided on an air distribution plate of the boiler, wherein the air distributor is in a form of an air distribution cone, which extends upwards from the air distribution plate into an interior of a furnace to form a shape gradually tapered in an extending direction, and secondary air ports are formed in air distribution cone side walls forming the air distribution cone. The present invention also relates to an air distributor assembly for a circulating fluidized bed boiler.
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公开(公告)号：US09518730B2
公开(公告)日：2016-12-13
申请号：US13983008
申请日：2012-01-19
申请人： Qinggang Lu , Ming Gao , Yunkai Sun , Guoliang Song , Xiaofang Wang , Yongjie Na , Dongyu Wang , Haigang Wang
发明人： Qinggang Lu , Ming Gao , Yunkai Sun , Guoliang Song , Xiaofang Wang , Yongjie Na , Dongyu Wang , Haigang Wang
CPC分类号： F22B31/0084 , F23C10/10 , F23C10/18 , F23J15/027 , F23J2217/40
摘要： A large-size circulating fluidized bed boiler, comprising: a furnace having a vertical furnace center line; and at least two groups of cyclones, each cyclone of each group of cyclones having an inlet gas pass communicated with the furnace. A furnace cross section formed by outer sidewalls and located at the inlet gas pass of the cyclone is a polygon having 2×n sides, and n is a positive integer greater than 1. The polygon is axially symmetric with respect to a perpendicular bisector of each side of the polygon, and when n is 2, the polygon is a square. Triangles formed by two endpoints of an inlet of the inlet gas pass of each cyclone at the cross section and an intersection of the furnace center line and the cross section are congruent. A single flow field in communication with each of the inlet is formed in the cross section.
摘要翻译： 一种大型循环流化床锅炉，包括：具有垂直炉中心线的炉; 和至少两组旋风分离器，每组旋风分离器的每个旋风分离器具有与炉连通的入口气体通道。 由外侧壁形成并位于旋风分离器的入口气体通道处的炉横截面是具有2×n侧的多边形，n是大于1的正整数。多边形相对于每个的垂直平分线轴对称 多边形的边，当n为2时，多边形为正方形。 每个旋风分离器的入口气体通道的两个端点在横截面上形成的三角形和炉中心线与横截面的交点是一致的。 在横截面中形成与每个入口连通的单个流场。
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