专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH10128396A TREATMENT OF ARSENIC-CONTAINING SLUDGE 失效
公开(公告)号：JPH10128396A
公开(公告)日：1998-05-19
申请号：JP28662396
申请日：1996-10-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUJITA HIROSHI , TAO KOZO , SHIMIZU HIROSHI , YOKOSE MAMORU
IPC分类号： C02F1/62 , C02F1/52 , C02F1/66 , C02F11/00 , C02F11/12 , C02F11/14
摘要： PROBLEM TO BE SOLVED: To surely prevent the re-elution of arsenic at a time when arsenic-containing sludge is subjected to disposal treatment by adding a calcium compd. to arsenic- containing waste water to adjust the waste water to a specific pH value and subjecting this waste water to solid-liquid separation treatment to obtain arsenic-containing sludge and adding slaked lime to the sludge before calcinating the sludge. SOLUTION: When slaked lime 12 is added to arsenic-containing waste water 11 flowing in a first reaction tank 1 to adjust the pH of the waste water to 12 or more, hydroxide flocs are formed. Next, this reaction soln. is subjected to solid-liquid separation within a flocculation and sedimentation tank 2 to form flocculated sedimented sludge 17 and a part of this sludge 17 is returned to the first reaction tank 1 as return sludge 17a and the remainder is stored in a sludge storage tank 5. When the sludge in the storage tank 5 becomes a definite amt., the sludge is dehydrated by a dehydrator 6 to be dried by a dryer 7 and, after slaked lime 9 is added to the dried sludge, the lime added sludge is calcined in a calcinator 8. The treated soln. of the sedimentation tank 2 is introduced into a second reaction tank 3 and an iron salt and an acid are added to the treated soln. to convert residual arsenic to iron arsenate which is, in turn, included in ferric hydroxide flocs formed at the same time to be co-precipitated.

2. 发明专利

JPS6130819B2 失效
公开(公告)号：JPS6130819B2
公开(公告)日：1986-07-16
申请号：JP6448678
申请日：1978-05-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： SERA TOSHIKUNI , WADA TETSUYOSHI , TAO KOZO , YAMADA YOSHIKAZU
IPC分类号： B01D53/94 , B01D53/34 , B01J33/00 , B01J35/10 , B01J37/02

3. 发明专利

JPH09276658A DEVICE FOR TREATING NOX GAS 失效
公开(公告)号：JPH09276658A
公开(公告)日：1997-10-28
申请号：JP8965996
申请日：1996-04-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： HATANO SHIGEKAZU , MATSUGAMI MANABU , NAKAGAWA HIROSHI , TAO KOZO
IPC分类号： B01D53/86 , B01D53/94 , B01J23/46
摘要： PROBLEM TO BE SOLVED: To eliminate the release of an untreated gas such as NO in an NOx gas treating device used for a device for dissolving a sample such as uranium oxide fuel. SOLUTION: This NOx gas treating device 20 consists of a cooled treatment unit 30 which communicates with the top of a sample container 2 and receives generated vapor and gas and a catalytic reaction treatment unit 60 which receives an exhaust gas from the cooled treatment unit 30. The cooled treatment unit 30 is composed of a cooled gas outlet plenum 35 which communicates with the lower part of a coolant chamber 33 filled with an alkali absorbing liquid and also has a connected a pipe 37 for supplying a nitrogen gas containing a hydrocarbon gas. Further, platinum and rhodium ternary catalysts 63 are packed in the catalytic reaction treatment unit 60 communicating with the upper gas space 43 of the coolant chamber 33 for the cooled treatment unit 30.

4. 发明专利

JPH10174947A MIXING TREATMENT OF COLLECTED ASH AND DESULFURIZATION WASTE WATER OF HEAVY OIL FUEL BURNING BOILER 失效
公开(公告)号：JPH10174947A
公开(公告)日：1998-06-30
申请号：JP33806396
申请日：1996-12-18
申请人： CHUBU ELECTRIC POWER , MITSUBISHI HEAVY IND LTD
发明人： TAKEGAMI SADAO , BAN KOUZOU , YAGASAKI TAKESHI , TAO KOZO , OKINO SUSUMU , OISHI GOJI
IPC分类号： B01D53/50 , B01D53/77 , B09B3/00
摘要： PROBLEM TO BE SOLVED: To provide a stably operable treatment method mixing the collected ash of the exhaust gas from a boiler using heavy oil as fuel and the waste water generated from an exhaust gas desulfurizing equipment to reduce vol. of capable of recovering vanadium in high purity and also reducing the vol. of formed sludge. SOLUTION: The collected ash (b) of the exhaust gas of a boiler and desulfurization waste water (a) are mixed and magnesium hydroxide and/or aq. ammonia is added to a mixed soln. (d) wherein tetravalent vanadium is eluted at pH4 or less to adjust the pH thereof to 4-9 and a formed high concn. vanadium-containing precipitate (g) is separated while calcium hydroxide or calcium oxide is further added to the separated soln. to adjust the pH thereof to 9-12 and this soln. is distilled to recover aq. ammonia k'.

5. 发明专利

JPH09192677A TREATMENT OF ARSENIC-CONTAINING WASTE WATER 失效
公开(公告)号：JPH09192677A
公开(公告)日：1997-07-29
申请号：JP478896
申请日：1996-01-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： YOKOSE MAMORU , FUJITA HIROSHI , TAO KOZO , BABA HIROSHI , KAMIYOSHI HIDEKI , SHIKAI RANKO
IPC分类号： C02F1/62 , C02F1/52 , C02F1/72 , C02F1/76 , C02F9/00 , C02F11/00
摘要： PROBLEM TO BE SOLVED: To remove in high efficiency an arsenic incorporated in a waste water by adding a calcium compd. to an arsenic-containing waste water to adjust pH and subjecting the sludge to a calcining treatment after subjecting the sludge to a solid-liq. separation and on the other hand adding a ferric iron salt to the treated water after the solid-liq. separation and subjecting the sludge to the solid-liq. separation. SOLUTION: The arsenic-containing waste water 11 is flowed into a reactor 1, and a hydroxide flock is formed by adding slaked lime 12 and also pH is adjusted. Then the reaction liq. is introduced a flocculating and settling tank 2 to perform solid-liq. separation, and after allowing to stand, a part of a flocculated and settled sludge 17 is returned to the reactor 1 to accelerate a formation of the flock and also the remainder is stored in a sludge storage tank 5. Then when the sludge becomes a specified amount, the sludge is supplied to a dehydrator 6 to dehydrate, then supplied to a dryer 7 to dry, moreover supplied to a calciner 8 to execute a calcining treatment. A treated water after performing the solid-liq. separation is introduced to the reactor 3 and a high molecular flocculating agent 15 is added to change the flock to coarse and to precipitate and separate.

6. 发明专利

JPH09173767A FLUE GAS TREATMENT SYSTEM 失效
公开(公告)号：JPH09173767A
公开(公告)日：1997-07-08
申请号：JP33855995
申请日：1995-12-26
申请人： SUYAMA TAKAZO , MITSUBISHI HEAVY IND LTD
发明人： SUYAMA TAKAZO , SUZUMURA HIROSHI , OGUSHI YASUYUKI , UGAWA NAOHIKO , HINO MASAO , TAO KOZO , KOJIMA NOBUO , OKAZOE KIYOSHI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/64 , B01D53/77
摘要： PROBLEM TO BE SOLVED: To facilitate the treatment of Se in a flue gas by providing the system with a means for subjecting a flue dust slurry to which an insolubilizer and an adsorbent are added, to solid-liquid separation. SOLUTION: In this system, dust contg. Se stuck thereto is collected and removed from a flue gas by using an electrostatic precipitator 5 or the like and then, subjected to extraction treatment with a liquid supplied from a wet desulfurization equipment 20 in an extraction means 13 to extract soluble components in the dust and to form a dust slurry. Thereafter, an insolubilizer A that is used for insolubilizing at least quadrivalent Se and supplied from an insolubilizer supply means 16, is added to the dust slurry in a mixing means 14 and further, an adsorbent X that is used for adsorbing at least hexavalent Se and supplied from an adsorbent supply means 100 is added to the resulting dust slurry in another mixing means 101 and then, the dust slurry contg. the insolubilizer and adsorbent is subjected to solid-liquid separation with a separation means 15 to separate quadrivalent and hexavalent Se in the solid phase from the liquid phase. At that time, each of a slurry withdrawal line of the desulfurization unit 20 and a wastewater treatment equipment 50 is similarly provided with a mixing device 14, an insolubilizer supply means 16, another mixing means 101, an adsorbent supply means 100 and a separation means. Moreover, in the desulfurization equipment 20, minimum required oxidation is performed by using an oxidation-reduction potential control method to inhibit oxidation of quadrivalent Se to hexavalent Se from occurring and to facilitate the Se treatment in the wastewater treatment equipment 50, etc. As the adsorbent X, an organismic raw material such as eggshell membrane or feather is used and as the insolubilizer A, FeCl3 or Fe(SO4 )3 is used.

7. 发明专利

JPH0149190B2 失效
公开(公告)号：JPH0149190B2
公开(公告)日：1989-10-23
申请号：JP10383282
申请日：1982-06-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： UEDA TAKASHI , YOKOYAMA SHIGEO , TAO KOZO , MASUMOTO HIROMI
IPC分类号： C10G1/00 , C10G1/06

8. 发明专利

JPS61251755A METHOD FOR MEASURING VOLATILE MATERIAL IN HIGH-VISCOSITY MATERIAL 失效
公开(公告)号：JPS61251755A
公开(公告)日：1986-11-08
申请号：JP9314485
申请日：1985-04-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： UEDA TAKASHI , NAKANE TAKEMI , TAO KOZO
IPC分类号： G01N25/14 , G01N25/00
摘要： PURPOSE:To make quantitative determination with high accuracy by adding an org. solvent which does not responds to a hydrogen flame ionization detector to a sample to dilute the sample, injecting the sample to an evaporation part set at a prescribed temp. and measuring the evaporated volatile material and org. solvent in a detecting part. CONSTITUTION:The hydrogen flame ionization detector is constituted of a box 1 for evaporation contg. a heater for heating and a detecting part 2. The sample 3 diluted by the org. solvent is injected through an injection port 4 by as much as several mul into a flow passage 5 in the box 1. The sample is heated by the heater and the volatile material and the org. solvent for dilution evaporate. On the other hand, nitrogen 6 which is an inert gas is supplied from a flow passage 7 into a flow passage 5 and the evaporated volatile material and the org. solvent for dilution are introduced to the part 2. Air 8 and hydrogen 9 are supplied to the part 2 to burn the volatile material and the org. solvent for dilution. The C ions originating from the volatile material are detected by a pair of electrodes 10. The quantitative determination of the volatile material with high accuracy is thus made possible.

9. 发明专利

JPH1057752A METHOD FOR MEASURING OXIDATION-REDUCTION POTENTIAL IN FLUE GAS DESULFURIZATION PROCESS 失效
公开(公告)号：JPH1057752A
公开(公告)日：1998-03-03
申请号：JP22204096
申请日：1996-08-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： OKINO SUSUMU , TANAKA YUJI , TAO KOZO
IPC分类号： B01D53/34 , B01D53/50 , B01D53/77 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To accurately measure complete oxidation-reduction potential in a flue gas desulfurization process in which calcium sulfite in a liquid absorbent is effectively oxidized. SOLUTION: In the flue gas desulfurization process by a wet lime gypsum method, by an oxidation-reduction potential(ORP) detector equipped with a sample liquid tank 31 in which ORP of a liquid absorbent 3 is detected and a comparison liquid tank 32 in which air is blown in the liquid absorbent to oxidize it and detect ORP in a completely oxidized state of the liquid absorbent, a deviation signal 47 as for the deviation between ORP of the liquid absorbent and ORP in a completely oxidized state of the liquid absorbent is detected, and by a deviation signal of this deviation signal 47 and an ORP deviation set value, the flow rate of oxygen containing gas passing through the liquid absorbent is controlled. Valves 36, 37, 38 and timers 39, 40, 41 for feeding chemicals for decomposing peroxide in the liquid absorbent 3 are provided, and an operation for decomposing the peroxide is finished before gas is passed to measure complete oxidation/reduction potential.

10. 发明专利

JPH09168719A METHOD FOR CONTROLLING OXIDATION OF SULFITE IN FLUE GAS DESULFURIZATION METHOD 失效
公开(公告)号：JPH09168719A
公开(公告)日：1997-06-30
申请号：JP33045295
申请日：1995-12-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： TANAKA YUJI , OKINO SUSUMU , TAO KOZO
IPC分类号： B01D53/00 , B01D53/32 , B01D53/34 , B01D53/50 , B01D53/77 , B01D53/81 , B01J19/08 , G01N27/18 , G01N27/416
摘要： PROBLEM TO BE SOLVED: To efficiently perform oxidation of calcium sulfite by using an ORP detector equipped with a plurality of comparison liquid tanks and performing measurement while successively changing over the comprison liquid tanks in a flue gas desulfurization method in which oxygen is passed into absorption liquid containing calcium sulfite to oxidize it and gypsum is produced. SOLUTION: In a flue gas desulfurization process in which exhaust gas containing sulfur oxide is treated by absorption liquid containing a calcium compound, an ORP(oxidation-reduction potential) measurement tank 30 is partitioned into A-C tanks 31-33 in the case of detection of ORP in absorption liquid. In the A, B tanks 31, 32, a valve 39 is opened to pass air 34 into the B tank 32 and ORP of absorption liquid is measured by ORP electrodes 35, 36. After definite time elapses, a valve 40 is opened to start ventilation of air 36 into the C tank 33. At a point of time when ORPs of the C, B tanks 33, 32 are made equal, the valve 39 is closed and the deviation of ORPs detected by ORP electrodes 35, 37 is outputted as a deviation signal 42. Flow rate of air 34 is controlled and stable oxidation control is maintained.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式