公开(公告)号：US5671127A

公开(公告)日：1997-09-23

申请号：US611660

申请日：1996-03-06

申请人： Akihiko Maezawa ,  Takeshi Yoshioka

发明人： Akihiko Maezawa ,  Takeshi Yoshioka

IPC分类号： H02M7/08 ,  H02M7/04 ,  H02M7/06 ,  H02M7/10 ,  H02M7/00 ,  H01F30/12

CPC分类号： H02M7/10

摘要： Three-phase alternating-current electric energy supplied from a primary power supply is supplied to first and second six-phase transformer-coupled rectifying circuits which are connected in cascade to each other. The first six-phase transformer-coupled rectifying circuit comprises three primary windings connected in delta, and the second six-phase transformer-coupled rectifying circuit comprises three primary windings connected in star, for producing respective output voltages which are .pi./6 out of phase with each other. The first and second six-phase transformer-coupled rectifying circuits, which are connected in cascade to each other, jointly provide a twelve-phase rectifying circuit which produces a reduced harmonic or ripple current in its output energy as compared with a six-phase transformer-coupled rectifying circuit. The two six-phase transformer-coupled rectifying circuits share a voltage applied to the power supply device, and hence may have lower requirements for withstanding a breakdown voltage.

摘要翻译： 从主电源供给的三相交流电能被提供给彼此级联连接的第一和第六六相变压器耦合整流电路。 第一个六相变压器耦合整流电路包括以三角形连接的三个初级绕组，第二个六相变压器耦合整流电路包括以星形连接的三个初级绕组，用于产生相位为π/ 6的相位的输出电压 与彼此。 彼此串联连接的第一和第二六相变压器耦合整流电路共同提供一个十二相整流电路，与六相变压器相比，其输出能量产生减小的谐波或纹波电流 耦合整流电路。 这两个六相变压器耦合整流电路共享施加到电源装置的电压，因此可以具有较低的耐受击穿电压的要求。

公开(公告)号：US5015443A

公开(公告)日：1991-05-14

申请号：US265453

申请日：1988-09-26

申请人： Kanichi Ito ,  Akihiko Maezawa

发明人： Kanichi Ito ,  Akihiko Maezawa

IPC分类号： C05C1/00 ,  B01D53/00 ,  B01D53/32 ,  B01D53/34 ,  B01D53/60 ,  B01D53/74 ,  B01J19/08 ,  C05C3/00

CPC分类号： B01J19/085 ,  B01D53/007 ,  B01D53/34 ,  B01D53/60 ,  B01D2259/812 ,  Y10S422/904

摘要： A method of and apparatus for treating waste gas by irradiation with electron beams wherein an electron beam irradiation chamber for irradiation with electron beams from an electron beam accelerator is provided in the vicinity of a main dust for waste gas; a part of the waste gas to be treated is introduced into the electron beam irradiation chamber where the waste gas is irradiated with electron beams to thereby form active species such as O and OH radicals; the waste gas having the active species formed therein is fed into the waste gas main duct by means of a feeding device; the waste gas fed into the waste gas main duct is dispersed into and mixed with the waste gas flowing through the main duct by means of a dispersing device, thereby changing noxious (gas) ingredients in the waste gas into the form of a mist or dust or the action of the active species; and the mist or dust is captured by means of a capturing device, for example, a dust collector.

公开(公告)号：US5041271A

公开(公告)日：1991-08-20

申请号：US532817

申请日：1990-06-04

申请人： Shinji Aoki ,  Yoshio Hirayama ,  Akihiko Maezawa

发明人： Shinji Aoki ,  Yoshio Hirayama ,  Akihiko Maezawa

IPC分类号： B01D53/00 ,  B01D53/60 ,  B01D53/74 ,  B01J19/08

CPC分类号： B01D53/007 ,  B01D53/60

摘要： A waste gas containing sulfur oxides (SO.sub.x) and/or nitrogen oxides (NO.sub.x) is purified by leading the waste gas to a radiation irradiation zone, adding ammonia (NH.sub.3) to the waste gas before, during or after the irradiation, collecting the resulting by-product (ammonium sulfate and/or ammonium nitrate) by means of a dust collector, and releasing the purified waste gas into the atmosphere. The amount of NH.sub.3 to be added is selected so as to be smaller than an amount calculated from target desulfurization and denitrification efficiencies so that it is possible to reduce the leakage of ammonia despite variations in the composition of the waste gas. Further, an alkaline substance exclusive of ammonia is added to the waste gas either at a position between the electrostatic precipitator and the bag filter or at the upstream side of a reactor outlet or both or within a dust collector or at the upstream side thereof so that the pH of the collected by-product is adjusted to 6 or more, preferably 7 or more, thereby suppressing the adverse effects of sulfamic acid impurities.

公开(公告)号：US4961830A

公开(公告)日：1990-10-09

申请号：US259537

申请日：1988-10-18

申请人： Shinji Aoki ,  Akihiko Maezawa

发明人： Shinji Aoki ,  Akihiko Maezawa

IPC分类号： B01D53/60 ,  B01D53/00 ,  B01D53/56 ,  B01D53/74 ,  B01J19/08 ,  C05C1/00 ,  C05C3/00

CPC分类号： B01D53/56 ,  B01D53/007 ,  B01J19/085

摘要： In a waste gas treating method wherein waste gas is treated by adding ammonia thereto and irradiating this waste gas with electron beams, the adhesion of a by-product to the inner wall of a duct is inhibited by feeding the waste gas after irradiation with electron beams at a flow velocity of 10 m/sec or less, more preferably 5 m/sec or less, until it at least reaches a first by-product collector. The duct may have a rectangular cross-sectional configuration. Thus, it is possible to inhibit increase in the pressure loss of the waste gas being treated and enable stable operation of the waste gas treating process.

公开(公告)号：US5702572A

公开(公告)日：1997-12-30

申请号：US757736

申请日：1996-11-26

申请人： Hiroyuki Fujimura ,  Takayuki Suzuki ,  Norio Yamada ,  Yoshiyuki Ichiki ,  Akihiko Maezawa ,  Hideo Hayashi

发明人： Hiroyuki Fujimura ,  Takayuki Suzuki ,  Norio Yamada ,  Yoshiyuki Ichiki ,  Akihiko Maezawa ,  Hideo Hayashi

IPC分类号： B01D53/50 ,  B01D53/00 ,  B01D53/56 ,  B01D53/60 ,  B01D53/74 ,  B01D53/77 ,  C02F1/20 ,  C02F1/44 ,  C02F1/469 ,  C02F1/52 ,  C02F3/28 ,  C02F9/00 ,  C07C1/00 ,  C02F3/00 ,  C02F3/30

CPC分类号： C02F9/00 ,  B01D53/002 ,  B01D53/007 ,  B01D53/60 ,  B01D2251/2062 ,  B01D2259/812 ,  C02F1/20 ,  C02F1/441 ,  C02F1/469 ,  C02F1/52 ,  C02F2101/16 ,  C02F2103/18 ,  C02F2103/20 ,  C02F2103/22 ,  C02F2103/32 ,  C02F3/286 ,  Y02E50/343 ,  Y02W10/12

摘要： The improved method of treating an exhaust gas from a combustion apparatus comprises adding ammonia to the exhaust gas and then irradiating it with an electron beam, characterized in that part or all of said ammonia is supplied as a separated portion of ammonia-containing water. The ammonia-containing foul water may contain feces excreted from humans and/or domestic animals and poultry, fermentation industry liquid waste or food processing wastewater. The organic waste-containing water may be digested anaerobically to convert the organic matter to methane gas and, subsequently, ammonia is separated from the supernatant liquor and used as the source of ammonia to be supplied. The methane gas is suitably used as a source of energy for the combustion apparatus. At least part of the organic matter in the organic foul water may be decomposed oxidatively and, subsequently, ammonia is separated for use as the source of ammonia to be supplied. The method is capable of simultaneous treatment of the exhaust gas and the ammonia-containing water in an efficient economical manner.

摘要翻译： 从燃烧装置处理废气的改进方法包括向废气中加入氨，然后用电子束照射，其特征在于，部分或全部氨作为含氨水的分离部分供应。 含氨的污水可能含有从人类和/或家畜，家禽，发酵工业液体废物或食品加工废水中排出的粪便。 含有机废物的水可以厌氧消化以将有机物质转化为甲烷气体，随后将氨与上清液分离并用作供应的氨源。 甲烷气体适合用作燃烧装置的能量源。 有机污水中的有机物的至少一部分可能被氧化分解，随后氨被分离用作供应的氨源。 该方法能够以有效的经济方式同时处理废气和含氨水。

公开(公告)号：US4915916A

公开(公告)日：1990-04-10

申请号：US264848

申请日：1988-10-31

申请人： Kanichi Ito ,  Akihiko Maezawa

发明人： Kanichi Ito ,  Akihiko Maezawa

IPC分类号： C05C1/00 ,  B01D53/00 ,  B01D53/32 ,  B01D53/34 ,  B01D53/60 ,  B01D53/74 ,  B01J19/08 ,  C05C3/00

CPC分类号： B01J19/085 ,  B01D53/007 ,  B01D53/34 ,  B01D53/60 ,  B01D2259/812 ,  Y10S422/904

摘要： A method and apparatus for treating waste gas by irradiation with electron beams wherein an electron beam irradiation chamber for irradiation with electron beams from an electron beam accelerator is provided in the communication with a main duct containing waste gas. A part of the waste gas to be treated is introduced into the electron beam irradiation chamber where the part of the waste gas is irradiated with electron beams, thereby to form active species such as O and OH radicals. The waste gas having the active species formed therein is fed into the waste gas main duct by means of a feeding device and is dispersed into and mixed with the waste gas flowing through the main duct by means of a dispersing device, thereby changing noxious (gas) ingredients in the waste gas into the form of a mist or dust by the action of the active species. The mist or dust is captured by means of a capturing device, for example, a dust collector.

公开(公告)号：US4882020A

公开(公告)日：1989-11-21

申请号：US199859

申请日：1988-05-27

申请人： Akihiko Maezawa ,  Yoshio Nakajima ,  Mitsuyoshi Kaneko ,  Shinji Aoki

发明人： Akihiko Maezawa ,  Yoshio Nakajima ,  Mitsuyoshi Kaneko ,  Shinji Aoki

IPC分类号： B01D53/00 ,  B01D53/56 ,  B01J19/08

CPC分类号： B01D53/007 ,  B01D53/56 ,  B01J19/081

摘要： A process for treating an effluent gas which includes the steps of leading an effluent gas containing sulfur oxides (SO.sub.x) and/or nitrogen oxides (NO.sub.x) to a radiation irradiation zone, adding ammonia (NH.sub.3) to the effluent gas before, during or after the irradiation, collecting resulting ammonium sulfate and/or ammonium nitrate by means of a dust collector, and releasing the effluent gas into the atmosphere. The desulfurization and/or denitration rate is improved by using as the dust collector a bag filter alone or a combination of an electrostatic precipitator and a bag filter, and adjusting the effluent gas temperature at the outlet of the bag filter within the range of from a temperature at which the humidity of the effluent gas is saturated to 100.degree. C.