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1. 发明专利

JPS63100918A SIMULTANEOUS REMOVING METHOD FOR MERCURY AND NITROGEN OXIDE IN EXHAUST GAS 失效
公开(公告)号：JPS63100918A
公开(公告)日：1988-05-06
申请号：JP24662386
申请日：1986-10-16
申请人： INOUE ZENSUKE , HITACHI SHIPBUILDING ENG CO
发明人： INOUE ZENSUKE , SAWACHI MINORU , ABE YOSHITAKA , HIROTSUNE AKIO
IPC分类号： B01D53/56 , B01D53/34 , B01D53/64 , B01D53/77
摘要： PURPOSE:To remove Hg and NOx simultaneously and efficiently by contacting exhaust gas containing Hg and NOx with absorbing solution containing hypochlorite or chlorite. CONSTITUTION:Exhaust gas containing Hg and NOx is guided into an exhaust gas washing column 21, and absorbing solution comprising alkali washing solution with hypochlorite or chlorite such as NaClO or the like added is circulated by a pump 22, exhaust gas being washed and treated. At this time, the absorbing solution absorbs water soluble Hg, the whole Hg constituted with water soluble Hg and also NOx. Thus, Hg and NOx are removed out of the exhaust gas simultaneously and efficiently.

2. 发明专利

JPH02203922A WET WASTE GAS DENITRATION METHOD 失效
公开(公告)号：JPH02203922A
公开(公告)日：1990-08-13
申请号：JP2437089
申请日：1989-02-01
申请人： HITACHI SHIPBUILDING ENG CO , INOUE ZENSUKE
发明人： ONIZUKA SHIGENORI , HAMA TOSHIO , HIROTSUNE AKIO , KOBAYASHI TOSHIJI , INOUE ZENSUKE , ITO HISAO , SAWACHI MINORU
IPC分类号： B01D53/56 , B01D53/34 , B01D53/77
摘要： PURPOSE:To remove NOx of a low concn. in exhaust gas in an extremely effective manner by bringing combustion gas in which bromine is preliminarily contained into contact with an absorbing solution prepared from caustic soda containing an ammonium ion. CONSTITUTION:A washing solution is prepared by adjusting an aqueous solution of sodium hypobromite to strong acidity and brought into contact with combustion exhaust gas to contain bromine in the exhaust gas. Subsequently, an aqueous caustic soda solution containing an ammonium ion is used as an absorbing solution and the aforementioned bromine-containing exhaust gas is brought into contact with the absorbing solution to absorb nitrogen oxide in the exhaust gas. The caustic soda solution after nitrogen oxide in the exhaust gas is absorbed and removed is subjected to diaphragm electrolysis while the obtained bromine gas and caustic soda are recirculated for reuse. By this method, Nox of a low concn. almost impossible to remove by a conventional wet absorbing method can be removed in an extremely effective manner.

3. 发明专利

JPS63315136A METHOD FOR SIMULTANEOUS REMOVAL OF MERCURY AND NITROGEN OXIDE IN FLUE GAS 失效
公开(公告)号：JPS63315136A
公开(公告)日：1988-12-22
申请号：JP8353887
申请日：1987-04-03
申请人： INOUE ZENSUKE , HITACHI SHIPBUILDING ENG CO
发明人： INOUE ZENSUKE , SAWACHI MINORU , ABE YOSHITAKA , HIROTSUNE AKIO
IPC分类号： B01D53/56 , B01D53/34 , B01D53/64 , B01D53/68 , B01D53/77
摘要： PURPOSE:To remove both insoluble, mercury and also nitrogen oxide by causing a flue gas to be absorbed in a solution containing hypochlorous acid prepared by an electrolysis of a solution containing alkali chloride which has absorbed hydrogen chloride gas in a flue gas. CONSTITUTION:A solution containing alkali chloride which has absorbed hydrogen chloride gas in a flue gas, or a waste water which is obtained by removing heavy metal salt from waste washing water containing alkali chloride is electrolyzed and converted to a solution which contains hypochlorous acid with 1-1,000ppm effective chlorine salt content, and this solution is utilize as a washing solution within a pH range between 3 and 8. A flue gas is treated either with a one-step wet washing apparatus wherein both water soluble and insoluble mercury are simultaneously absorbed and removed by that hypochlorous acid containing solution or with a two-step wet washing apparatus wherein water soluble mercury is removed in the first step and then water insoluble mercury is absorbed and removed by that solution in the second step. At the same time, nitrogen oxide is oxidized by that solution and removed in these washing treatment. By this aforementioned method, not only insoluble mercury such as mercury vapor, which has so far seemed difficult to be removed, is effectively removed but also nitrogen oxide is removed simultaneously from a flue gas.

4. 发明专利

JPH02203921A WET REMOVAL OF NITROGEN OXIDE IN VARIOUS COMBUSTION EXHAUST GASES 失效
公开(公告)号：JPH02203921A
公开(公告)日：1990-08-13
申请号：JP2436989
申请日：1989-02-01
申请人： HITACHI SHIPBUILDING ENG CO , INOUE ZENSUKE
发明人： ONIZUKA SHIGENORI , HAMA TOSHIO , HIROTSUNE AKIO , KOBAYASHI TOSHIJI , INOUE ZENSUKE , ITO HISAO , SAWACHI MINORU
IPC分类号： B01D53/56 , B01D53/34 , B01D53/77
摘要： PURPOSE:To effectively remove NOx, especially, NO in exhaust gas by bringing combustion exhaust gas having chlorine preliminarily contained therein into contact with an absorbing solution prepared from caustic soda containing an ammonium ion and a bromine ion. CONSTITUTION:The exhaust gas of a garbage incinerator is introduced into a co-current flow venturi type washing tower 11 and, since chlorine is preliminarily added to the exhaust gas in this washing tower 11, as a result, NaClO is injected in the recirculation solution of the washing tower 11. This recirculation solution of the washing tower is brought to strong acidity by hydrochloric acid in the exhaust gas but, by separately adding NaOH, the pH thereof is held to about 3. The exhaust gas having chlorine added thereto is introduced into an absorbing tower 13 and brought into contact with the recirculation solution containing NH4 and Br of the absorbing tower 13 according to a countercurrent flow system to absorb and remove NOx. Subsequently, the exhaust gas is dehumidified by the cooling water caming from a water tank 15 through a cooling tower 16 in a dehumidifying tower 14 to be discharged out of the system.

5. 发明专利

JPH03246423A DETECTION OF SLUDGE BOUNDARY AND DETECTION OF CONCENTRATION DIFFERENCE BOUNDARY AND SLUDGE BOUNDARY DETECTOR AND SUPERNATANT WATER DISCHARGING DEVICE USING THIS DETECTOR 失效
公开(公告)号：JPH03246423A
公开(公告)日：1991-11-01
申请号：JP4355490
申请日：1990-02-24
申请人： MARSIMA AQUA SYSTEM CORP , INOUE ZENSUKE
发明人： SHIMAOKA TSUKASA , INOUE ZENSUKE , HAYASHI AKIHIRO
IPC分类号： G01F23/28 , B01D21/24 , B01D21/30 , B01D21/34
摘要： PURPOSE:To specify a sludge boundary position by lowering the detecting end of a sensor disposed with light emitting elements and light receiving elements at the base ends of light transmission bodies, such as optical fibers, toward the sludge boundary, detecting the feedback light with the light receiving elements and detecting the inflection point at the curve of the changes in light quantity. CONSTITUTION:The sensor 5a disposed with the light emitting elements 2a, 2b and the light receiving elements 3a, 3b at the root end of the light transmission bodies, such as optical fibers 1a, 1b, are lowered toward the sludge boundary in the supernatant water and the quantity of the reflected light feeding back in the transmission bodies is measured during this process. The difference between the latest light quantity and the light quantity just before this measure ment is determined and the tendency of the curve of the changes in the difference between the light quantities is kept monitored. The inflection point existing in this curve is detected and judgment is made that the detecting end of the sensor 5a of this time arrives at the sludge boundary. The magnitude in the difference between the light quantities is measured in such a manner and the tendency of the change in the difference between the light quantities is monitored in such a manner and, therefore, even the sludge boundary which exhibits just the obscure inflection point in the curve of the changes in the light quantity appears distinctly as the inflection point indicating the max. value in the curve of the changes.

6. 发明专利

JPH01315320A METHOD FOR REMOVING NITROGEN OXIDE IN EXHAUST GAS 失效
公开(公告)号：JPH01315320A
公开(公告)日：1989-12-20
申请号：JP14760688
申请日：1988-06-15
申请人： INOUE ZENSUKE , HITACHI SHIPBUILDING ENG CO
发明人： INOUE ZENSUKE , ITO HISAO , SAWACHI MINORU , MURAKAWA TADAO , HIROTSUNE AKIO , KOBAYASHI TOSHIJI
IPC分类号： B01D53/56 , B01D53/34 , B01D53/77
摘要： PURPOSE:To efficiently remove NOx in exhaust gas by wet-scrubbing the gas with a soln. contg. an oxidizing agent and NH or further contg. Br as an absorbing soln. CONSTITUTION:Exhaust gas from a garbage incinerator 1 is noncatalytically denitrated by blowing gaseous NH3 into the top of the incinerator 1 or spraying an aq. soln. of urea or ammonia. Dust is then removed from the gas in an electrostatic dust precipitator 2 and the gas is sent to a wet scrubbing tower 3 and scrubbed with a soln. contg. an oxidizing agent such as NaClO and NH in the form of NH4Cl, etc., or further contg. Br in the form of KBr, etc., to absorb and remove NOx. By using the absorbing soln., efficient denitration is carried out.

7. 发明专利

JPH01281108A DRAINAGE EQUIPMENT OF SUPERNATANT WATER IN WATER TREATMENT INSTALLATION 失效
公开(公告)号：JPH01281108A
公开(公告)日：1989-11-13
申请号：JP11114888
申请日：1988-05-07
申请人： INOUE ZENSUKE , MARSIMA AQUA SYSTEM CORP
发明人： INOUE ZENSUKE , TAKAMIZAWA KAZUHIRO , SHIMAOKA TSUKASA
IPC分类号： B01D21/24 , F04D29/44
摘要： PURPOSE:To efficiently discharge the solid-liquid separated supernatant water by constituting a flow passage comparted with a flow straightening pipe provided in the downward aperture of a drainage pipe so that the outer peripheral flow passage is narrowly formed and the inner peripheral flow passage is widely formed. CONSTITUTION:The downward aperture 5A of a drainage pipe 5 whose end is connected with the suction port of a pump is extended toward the outer part and a nearly top-shaped flow straightening board 9 is fitted to the position of the lower part separated from the downward aperture at constant distance. Furthermore a nearly trumpet-shaped or tapered flow straightening pipe 14 wherein lower-side diameter is largely set is provided to the inside of the drainage pipe 5 in the part upper than the downward aperture end and the flow passage in the drainage pipe is comparted into both an inner peripheral flow passage 17 of the inside of the pipe 14 and an outer peripheral flow passage 16 which is provided to the outer part of the pipe 14 and formed more narrowly than the flow passage 17. The drainage pipe 5 is related to a water level following mechanism and even when the water level is fluctuated, the downward aperture 5A is always held to the prescribed position under water surface. Solid-liquid separated supernatant water can be efficiently discharged by this comparatively small equipment.

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