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41. 发明授权

US4406672A Process and installation for the intermittent cleaning of dust-laden crude gases 失效
标题翻译：间歇清洁含灰尘的粗气体的过程和安装
公开(公告)号：US4406672A
公开(公告)日：1983-09-27
申请号：US242082
申请日：1981-03-09
申请人： Wolfgang Berz
发明人： Wolfgang Berz
IPC分类号： B01D46/30 , B03C3/00 , B03C3/145
CPC分类号： B01D46/30 , B03C3/00 , B03C3/145
摘要： An intermittently operated apparatus for cleaning dust laden gases has a gas-tight housing, a pair of spaced gas-permeable walls holding a filter bed consisting of granular filter material. A centrally located conveying pipe is mounted to the housing for regenerating the filter bed after a predetermined amount of operating time. A high electric potential is applied in the region of the filter bed for removing dust particles from the dust laden gas which is flowing through the permeable walls and the filter bed. From time to time, the gas cleaning mode is interrupted and the granular filter material of the filter bed is regenerated by fluidizing the same in the conveying pipe. A system comprising a plurality of such filtering apparatus always maintains one of the apparatus in a regenerating mode while the remaining filter devices are in gas cleaning mode. Thus, the simultaneous operation of cleaning and regenerating is accomplished. The use of a filter bed having a thickness of about 25 to 100 mm. and consisting of granular filter material having a grain size of about 0.5 to 2.0 mm. in combination with application of high electric potential charge of about 10,000 to 60,000 volts achieves significant improvement over prior apparatus and methods.
摘要翻译：用于清洁含尘气体的间歇操作的装置具有气密的壳体，一对间隔的透气壁，其保持由粒状过滤材料组成的过滤床。在预定量的操作时间之后，将中心位置的输送管安装到壳体上以再生过滤床。在过滤床的区域中施加高电位，用于从流过可渗透壁和过滤床的含尘气体中除去灰尘颗粒。不时地，气体清洁模式被中断，并且过滤床的颗粒过滤材料通过在输送管中流化而再生。包括多个这种过滤装置的系统总是将其中一个设备保持在再生模式，而剩余的过滤装置处于气体清洁模式。因此，完成清洁和再生的同时操作。使用厚度约25至100mm的过滤床。并且由粒径约0.5至2.0mm的粒状过滤材料组成。与大约10,000到60,000伏特的高电势电荷的应用相结合，实现了相对于现有装置和方法的显着改进。

42. 发明授权

US4290786A Apparatus for removing particulate matter from a gas stream 失效
标题翻译：用于从气流中除去颗粒物质的装置
公开(公告)号：US4290786A
公开(公告)日：1981-09-22
申请号：US113495
申请日：1980-01-21
申请人： Richard W. Schuff
发明人： Richard W. Schuff
IPC分类号： B01D53/06 , B01D53/50 , B03C3/145 , B03C3/38 , B03C3/12
CPC分类号： B03C3/38 , B01D53/08 , B01D53/508 , B03C3/145 , B01D2251/404 , B01D2251/606 , B01D2257/302 , B01D2258/025 , B01D2259/414 , Y10S55/25
摘要： An apparatus for removing particulate matter from a gas stream includes a sorbent injector, a charging antenna, and a plurality of granular media filter cells. The gas stream containing the particulate matter is directed through an inlet plenum. The sorbent injector, located within the inlet plenum, injects fine particles of a sorbent material toward the charging antenna for electrostatically charging the sorbent particles. The charged sorbent particles form a large charged surface area for inducing charges on the particulate matter entrained by the gas stream. The plurality of filter cells each include inner and outer perforated, concentric cylinders, and granular media is caused to move downward between the inner and outer cylinders of each filter cell. The gas stream, including the entrained particulate matter and sorbent particles, flows through the perforations in the inner cylinder into the granular media; the entrained particulate matter and sorbent particles become attached to the granular media as a result of inertial impact forces and electrostatic charges. Clean gas leaves the granular media through the perforations in the outer cylinder.
摘要翻译：用于从气流中除去颗粒物质的装置包括吸附剂注入器，充电天线和多个颗粒状介质过滤器单元。含有颗粒物质的气流被引导通过入口增压室。位于进气室内的吸附剂喷射器将吸附剂材料的细颗粒注入充电天线，以静电充电吸附剂颗粒。带电的吸附剂颗粒形成大的带电表面积，用于在由气流夹带的颗粒物质上引起电荷。多个过滤器单元各自包括内部和外部穿孔的同心圆筒，并且使粒状介质在每个过滤器单元的内部和外部气缸之间向下移动。包括夹带的颗粒物质和吸附剂颗粒的气流通过内筒中的穿孔流入颗粒介质中; 由于惯性冲击力和静电电荷，夹带的颗粒物质和吸附剂颗粒附着到颗粒介质上。清洁气体通过外筒中的穿孔离开颗粒介质。

43. 发明授权

US3926587A Electrostatic filtration in panel bed 失效
标题翻译：面板中的静电过滤
公开(公告)号：US3926587A
公开(公告)日：1975-12-16
申请号：US50738774
申请日：1974-09-19
申请人： SQUIRES ARTHUR M
发明人： SQUIRES ARTHUR M
IPC分类号： B03C3/145 , B03C3/36 , B03C3/12
CPC分类号： B03C3/145 , B03C3/36
摘要： A panel bed fitted for puffback cleaning is provided that can filter dust from a gas over a granular material of unusually large particle size, with the advantage of lower pressure drop in the gas. For example, fly ash from combustion of pulverized coal can advantageously be filtered over a granular material about 10 to 14 mesh in size. The granular material is electrically conductive, and the panel bed is grounded electrically. A negative electrode is provided in the gas entry compartment serving the panel bed, so that dust particles are charged electrically and are attracted to the gas entry surfaces of the panel bed, where the dust forms a cohesive filter cake promoting high filtration efficiency.

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