公开(公告)号：US4940007A

公开(公告)日：1990-07-10

申请号：US232778

申请日：1988-08-16

Applicant: Matti Hiltunen ,  Ragnar Lundqvist ,  Juha Sarkki

Inventor： Matti Hiltunen ,  Ragnar Lundqvist ,  Juha Sarkki

IPC: B01J8/18 ,  B01J8/24 ,  F23C10/10 ,  F23C10/18

CPC classification number: B01J8/1809 ,  B01J8/1818 ,  F23C10/10 ,  F23C10/18 ,  B01J2208/00495 ,  F23C2206/101

Abstract: In a fast fluidized bed reactor having, in a lower region, downwardly and inwardly inclined walls, a change in the direction of the wall surface or a ledge or protrusion is provided to change the direction of the particles flowing downwardly adjacent the wall for directing the particles inwardly away from the wall and into the region acted on by the nozzles providing the fluidizing gas. The change of direction, abutment or projection is preferably provided along the refractory wall surface at an elevation 200-1100 mm above the grid plate. In this manner, clogging of the nozzles is prevented and more efficient and effective fluidization and combustion processes occur.

公开(公告)号：US4672918A

公开(公告)日：1987-06-16

申请号：US734716

申请日：1985-05-16

Applicant: Folke Engstrom ,  Juha Sarkki

Inventor： Folke Engstrom ,  Juha Sarkki

IPC: B01J8/00 ,  B01J8/24 ,  B01J8/38 ,  F22B31/00 ,  F23C10/08 ,  F22B1/00

CPC classification number: B01J8/1809 ,  B01J8/005 ,  B01J8/388 ,  F22B31/0084 ,  F23C10/08 ,  B01J2208/00044 ,  F23C2206/101

Abstract: A simple yet effective method and apparatus control the temperature within a fluidized bed reactor within a desired range (e.g. about 800.degree.-950.degree. C.). Particulate solids in the off-gases from the combustion chamber of the reactor are separated out, and pass through one or more of a plurality of return conduits back to the combustion chamber. The temperature of the returning solids is controlled by positively cooling them, utilizing heat exchangers, within one or more of the conduits, and by controlling which of the conduits the solids flow through. Valves at the top of the conduits can control the flow of solids into the conduits. Alternatively U-shaped passageways at the bottom of the conduits between them and the combustion chamber can have fluidizing air injected therein, the injected air controlling the flow of solids out of the conduits into the combustion chamber.

Abstract translation: 简单而有效的方法和装置将流化床反应器内的温度控制在所需范围内（例如约800-950℃）。 来自反应器的燃烧室的废气中的颗粒状固体被分离出来，并且通过多个返回导管中的一个或多个回到燃烧室。 回流固体的温度通过在一个或多个导管内利用热交换器进行正冷却来控制，并且通过控制固体流过哪个管道来控制。 导管顶部的阀门可以控制固体进入管道的流量。 或者在它们与燃烧室之间的导管底部的U形通道可以在其中注入流化空气，喷射的空气控制固体流出管道进入燃烧室。

公开(公告)号：US07503286B2

公开(公告)日：2009-03-17

申请号：US11587948

申请日：2004-06-29

Applicant: Matti Hiltunen ,  Pertti Kinnunen ,  Juha Sarkki

Inventor： Matti Hiltunen ,  Pertti Kinnunen ,  Juha Sarkki

IPC: F23C10/02

CPC classification number: F23C10/14 ,  F23C10/20 ,  F23G2900/7013

Abstract: A method of combusting oil shale in a circulating fluidized bed boiler. Fuel, including oil shale, is introduced into a furnace of the circulating fluidized bed boiler, primary oxygenous gas is introduced through a bottom grid of the furnace, and secondary oxygenous gas is introduced to the furnace at a first level above the level of the bottom grid. The primary oxygenous gas is introduced to the furnace at a rate providing below the first level a fluidizing velocity of less than 2.5 m/s, and the primary and secondary oxygenous gases are introduced to the furnace in such a way that a circulating fluidized bed is formed, and the fluidizing velocity at the first level is less than 70% of the fluidizing velocity in the upper portion of the furnace.

Abstract translation: 在循环流化床锅炉中燃烧油页岩的方法。 包括油页岩在内的燃料被引入到循环流化床锅炉的炉中，初级氧气通过炉底部引入，并且第二级氧气在底部水平以上的第一级被引入炉中 格。 将主要的含氧气体以低于第一水平的速率引入到炉中，流化速度小于2.5m / s，并且将初级和次级氧气以这样的方式引入炉中，使得循环流化床为 并且第一级的流化速度小于炉上部流化速度的70％。

公开(公告)号：US20070272171A1

公开(公告)日：2007-11-29

申请号：US11587948

申请日：2004-06-29

Applicant: Matti Hiltunen ,  Pertti Kinnunen ,  Juha Sarkki

Inventor： Matti Hiltunen ,  Pertti Kinnunen ,  Juha Sarkki

IPC: F23C10/00

CPC classification number: F23C10/14 ,  F23C10/20 ,  F23G2900/7013

Abstract: A method of combusting oil shale or fuel having similar properties as oil shale in a circulating fluidized bed boiler. The method includes the steps of (a) introducing fuel into a furnace of the circulating fluidized bed boiler, (b) introducing primary oxygenous gas through a bottom grid of the furance, and (c) introducing secondary oxygenous gas to the furnace at a first level above the level of the bottom grid. The primary oxygenous gas is introduced to the furnace at a rate providing below the first level a fluidizing velocity of less than 2.5 m/s, and the primary and secondary oxygenous gases are introduced to the furnace in such a way that the fluidizing velocity below the first level is less than 70% of the fluidizing velocity in the upper portion of the furnace.

Abstract translation: 在循环流化床锅炉中燃烧具有类似油页岩特性的油页岩或燃料的方法。 该方法包括以下步骤：（a）将燃料引入循环流化床锅炉的炉中，（b）将初级氧气通过炉底部的栅格引入，（c）将第二氧气引入炉中， 水平高于底部网格的水平。 主要氧气以低于第一级的速率被引入炉中，流化速度小于2.5m / s，并且将初级和次级氧气以这样的方式引入炉中，使得流化速度低于 第一级小于炉子上部流化速度的70％。