公开(公告)号：US10150925B2

公开(公告)日：2018-12-11

申请号：US15508217

申请日：2015-09-02

申请人： Paul Wurth S.A.

发明人： Louis Schmit ,  Ben Muller

IPC分类号： B65G53/18 ,  C10J3/50 ,  B65G53/12 ,  B65G53/46 ,  B65G53/66

摘要： A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.

公开(公告)号：US10823506B2

公开(公告)日：2020-11-03

申请号：US14413127

申请日：2013-07-03

申请人： PAUL WURTH S.A.

发明人： Pierre Mahowald ,  Ben Muller ,  Louis Schmit

IPC分类号： F27D3/10 ,  B65G53/12 ,  F27D3/00 ,  F27D3/18 ,  F27B1/20 ,  F27D19/00 ,  F27B1/26 ,  B65G53/22

摘要： An installation for distribution of granular or powder material via pneumatic transport comprising at least one dispensing hopper (3) for temporary storage of said granular or powder material, the dispensing hopper being suited to being, alternately, pressurized for emptying the dispensing hopper and depressurized to permit filling thereof, and a device for depressurizing said dispensing hopper. The depressurizing device comprises a depressurizing duct (12) connected to said dispensing hopper, a bag filter (11), having a maximum operating flow rate, connected to the depressurizing duct, and flow control means (15) for controlling the flow rate in said depressurizing duct through the bag filter. The bag filter (11) is suited to operating under pressure, and the flow control means (15) are located on the depressurizing duct (12) downstream of the bag filter (11) and are arranged to provide a flow rate which is at most equal to the maximum flow rate of the bag filter. Application in particular to an installation for injecting coal into a blast furnace.

公开(公告)号：US20150204610A1

公开(公告)日：2015-07-23

申请号：US14413127

申请日：2013-07-03

申请人： PAUL WURTH S.A.

发明人： Pierre Mahowald ,  Ben Muller ,  Louis Schmit

IPC分类号： F27D3/10 ,  F27B1/20 ,  F27D3/18 ,  B65G53/12 ,  F27D3/00

摘要： An installation for distribution of granular or powder material via pneumatic transport comprising at least one dispensing hopper (3) for temporary storage of said granular or powder material, the dispensing hopper being suited to being, alternately, pressurized for emptying the dispensing hopper and depressurized to permit filling thereof, and a device for depressurizing said dispensing hopper. The depressurizing device comprises a depressurizing duct (12) connected to said dispensing hopper, a bag filter (11), having a maximum operating flow rate, connected to the depressurizing duct, and flow control means (15) for controlling the flow rate in said depressurizing duct through the bag filter. The bag filter (11) is suited to operating under pressure, and the flow control means (15) are located on the depressurizing duct (12) downstream of the bag filter (11) and are arranged to provide a flow rate which is at most equal to the maximum flow rate of the bag filter. Application in particular to an installation for injecting coal into a blast furnace.

摘要翻译： 用于通过气动输送分配颗粒或粉末材料的装置，包括用于临时储存所述颗粒或粉末材料的至少一个分配料斗（3），所述分配料斗适于交替地被加压以排空分配料斗并减压至 允许其填充，以及用于使所述分配料斗减压的装置。 减压装置包括连接到所述分配料斗的减压管道（12），具有连接到减压管道的最大工作流量的袋式过滤器（11）和用于控制所述减压管道中的流量的流量控制装置（15） 通过袋式过滤器减压管道。 袋式过滤器（11）适于在压力下操作，并且流量控制装置（15）位于袋式过滤器（11）的下游的减压管道（12）上，并且被布置成提供至多最大的流量 等于袋式过滤器的最大流量。 特别适用于将煤喷入高炉的装置。