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1. 发明专利

JPS53146464A PROCESS FOR TREATING SLUDGE CONTAINING CALCIUM FLUORIDE 失效
公开(公告)号：JPS53146464A
公开(公告)日：1978-12-20
申请号：JP6110877
申请日：1977-05-27
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MAEKOYA CHIAKI , OOTANI KOUJI , MIZUNIWA FUMIO , KOMORI SHINJI
IPC分类号： C02F11/00
摘要： PURPOSE:To provide the subject process comprising the steps of ; mixing a reducing agent in a sludge containing calcium fluoride, an burning the mixture, thereby decreasing the elution of hexavalent chromium.

2. 发明专利

JPS5320659A METHOD OF TREATING WASTE WATER CONTAINING HEAVY METAL 失效
公开(公告)号：JPS5320659A
公开(公告)日：1978-02-25
申请号：JP9477876
申请日：1976-08-11
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MAEKOYA CHIAKI , MIZUNIWA FUMIO , SUGAWARA SATOSHI
IPC分类号： C02F1/62 , C02F11/00
摘要： PURPOSE:To accomplish final treatment of separated sludge through a high temperature baking method which is conducted after heavy metal ion is settled and separated into hydroxide and silicate.

3. 发明专利

JPS6238247A METHOD FOR REGENERATING ION EXCHANGE RESIN 失效
公开(公告)号：JPS6238247A
公开(公告)日：1987-02-19
申请号：JP17587685
申请日：1985-08-12
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： OSUMI KATSUMI , MIZUNIWA FUMIO , SHINDO KIICHI , AKAMINE KAZUHIKO , AIZAWA MOTOHIRO
IPC分类号： C02F1/42 , B01J49/00 , G21F9/00 , G21F9/12
摘要： PURPOSE:To reduce the amount of regenerating chemicals and to prolong the life of an ion exchange resin, by regenerating a chelate agent forming a complex along with the metal ion adsorbed by the ion exchange resin by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the metal ion. CONSTITUTION:The chelate agent forming a complex along with the main metal ion adsorbed by an ion exchange resin is regenerated by a solution containing regenerating chemicals in an amount equivalent to or slightly more than the aforementioned metal ion. For example, when the cation exchange resin of a condensation desalting device of a boiling water atomic power plant is regenerated, the amount of the chelate agent contained in the regenerated solution is set to one equal to or more than a mol number necessary for forming a neutral or negative complex along with the metal contained in said ion exchange resin to perform regeneration. The amount of the regenerating solution is suitably adjusted to 1/4-1/2 the amount of the ion exchange resin. Further, it is suitable to perform regeneration by stirring the ion exchange resin and the regenerating solution by air bubbles.

4. 发明专利

JPS60351A MONITORING METHOD OF CORROSION 失效
公开(公告)号：JPS60351A
公开(公告)日：1985-01-05
申请号：JP10836183
申请日：1983-06-16
申请人： HITACHI LTD
发明人： HONDA TAKU , KASHIMURA EIJI , MINATO AKIRA , MIZUNIWA FUMIO , MAEKOYA CHIAKI
IPC分类号： G01N27/26 , G01N17/00
摘要： PURPOSE:To monitor corrosion simply by measuring the concentration of manganese ions from the corrosion information of a metallic material containing manganese. CONSTITUTION:A pipe 2 to be used from a primary cooling water system of a BWR nuclear power plant is made of a metallic material containing manganese. When the corrosive state of the pipe 2 is to be monitored, sampling pipes 3, 4 are connected to the inlet and outlet of the pipe 2 and the increment of the concentration of Mn ions in a flowing fluid 1 is measured. The quantity (m) of corrosion in the whole pipe 2 and the corrosion speed (dm/dt) are found out from equations ( I ), (II) on the basis of said measured value. In these equations, V is the flow rate of the fluid in the pipe, DELTAx is the increment of the concentration of Mn ions, t is the stay time of the fluid in the pipe, s is the contacting area of the pipe with the fluid, and rho is the concentration (Wt%) of Mn in the pipe material. The concentration of Mn ions is obtained by measuring the fluid collected by the sampling pipes 3, 4 on the basis of direct absorptiometry.

5. 发明专利

JPS57158556A COBALT ANALYZER 失效
公开(公告)号：JPS57158556A
公开(公告)日：1982-09-30
申请号：JP4486881
申请日：1981-03-26
申请人： HITACHI LTD
发明人： MIZUNIWA FUMIO , MAEKOYA CHIAKI , IWASAKI HITOSHI , USAMI KATSUHISA
IPC分类号： G01N31/00 , G01N31/22 , G01N33/20
摘要： PURPOSE:To determine 1ppt cobalt by making use of the coloring of an alkaline soln. from absence of color to a yellow color when cobalt exists in said soln. where 1,2-dihydroxybenzene-3,5-disulfonic acid coexist with hydrogen peroxide. CONSTITUTION:Sample water is introduced into a valve 3 through a sample water introduction piping 2 branched from part of a sampling piping 1. The buffer soln. in a tank 5 is fed through a flow passage 3C to a mixer 7. The 1,2-dihydroxybenzene-3,5-disulfonate in a tank 8 and the hydrogen peroxide soln. in a tank 9 are introduced by constant flow pumps 10, 11 into the mixer 7. While the mixed solns. from the mixer 7 pass through a reaction coil 12 kept at about 50 deg.C by a water bath 13, the 1,2-dihydroxybenzene-3,5-disulfonate are oxidized by the hydrogen peroxide in the presence of cobalt, and color to a yellow color having max. absorption at 440nm. The quantity of the absorption of this coloring is detected with an absorption photometer 14 and is displayed in a recorder 15.

6. 发明专利

JPS5754837A Analyzer of dissolved gas 失效
标题翻译：分解气体分析仪
公开(公告)号：JPS5754837A
公开(公告)日：1982-04-01
申请号：JP12925580
申请日：1980-09-19
申请人： Hitachi Ltd
发明人： KAWAZOE SHIGEYOSHI , MIZUNIWA FUMIO , USAMI KATSUHISA
IPC分类号： G01N27/68 , G01N1/22 , G01N33/00
CPC分类号： G01N33/0011
摘要： PURPOSE:To extract and measure a dissolved gas in a sample liquid without contacting outside air by extracting it as dissolved in an inert gas through contact between the liquid and the gas. CONSTITUTION:A carrier gas from a supply source 1 is fed to a separation column 12 and a photoionized gas detector 13 via a measuring device 20 passing through a decompression value 2 and a flow rate adjuster 8. A helium gas to another flow rate adjuster 3 flows through a measuring tube 10 of a gas sampling device 20 at a constant flow rate passing through an extraction tube 7 and an outlet 74 via an inlet 71. A sample water is introduced into the extraction tube 7 at an inlet 73 via a flow rate adjuster 4 from a watr sampling tube 5 and flows down along the surface of a spherical filler 72 to an overflow tank 6 from an outlet 75. In the extraction tube, the dissolved gas in the sample water is extracted into the helium and guided to the separation column 12 with the change-over of a valve 11. It is separated into each component while passing through the separation column 12 with the carrier gas and detected with a detector 13.
摘要翻译：目的：通过液体和气体之间的接触将溶解在惰性气体中的溶液提取并测量样品液体中的溶解气体，而不会与外部空气接触。构成：来自供给源1的载气通过经过减压值2和流量调节器8的测量装置20供给到分离塔12和光电离气体检测器13.向另一个流量调节器3提供氦气以恒定的流速通过气体取样装置20的测量管10，经由入口71通过抽吸管7和出口74.样品水通过流速被引入入口73中调节器4从watr取样管5沿着球形填料72的表面从出口75向下流动到溢流槽6.在抽取管中，将样品水中的溶解气体提取到氦气中并引导到分离塔12与阀11的转换一起通过分离塔12与载气分离，并用检测器13检测。

7. 发明专利

JPH0353198A SUSPENDED IRON GENERATOR AND BOILING WATER TYPE NUCLEAR POWER PLANT CONTG. THEREOF 失效
公开(公告)号：JPH0353198A
公开(公告)日：1991-03-07
申请号：JP18850489
申请日：1989-07-20
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI KYOWA KOGYO KK
发明人： MIZUNIWA FUMIO , OSUMI KATSUMI , AIZAWA MOTOHIRO , SAWA TOSHIO
IPC分类号： G21D1/00 , G21D3/08
摘要： PURPOSE:To generate iron which does not contain corrosion products by dissolv ing ferrous carbonate into water, adding gas contg. oxygen to this water to remove carbon dioxide and suspending iron ions as iron hydroxide therein. CONSTITUTION:Pure water 5 is supplied via a supply piping 4 into a carbon dioxide absorption column 1 from the upper position thereof. A gas diffuser 6 is disposed in the internal lower position thereof. The mixture composed of the carbon dioxide in a carbon dioxide cylinder 7 and the gaseous nitrogen in a gaseous nitrogen cylinder 8 mixed in a mixer 9 is supplied to this diffuser 6. The water absorbing the carbon dioxide is introduced through a piping 12 having an electrical conductivity meter 10 into a ferrous carbonate dissolving vessel 2 of the ensuing stage. The vessel 2 is equipped with a bucket 22 contg. the ferrous carbonate 21, a stirrer 24, etc., and the ferrous carbonate 21 dissolves in water. This water is sent to an iron hydroxide forming vessel 3 where the ferrous carbonate is converted to the iron hydroxide. Gaseous oxygen is supplied from a gaseous oxygen cylinder 33 into the vessel 3 and the iron carbonate in the water is converted to the iron hydroxide by this gaseous oxygen and is suspended in the water.

8. 发明专利

JPH02253159A PERFORMANCE DIAGNOSING DEVICE FOR WATER TREATING DEVICE 失效
公开(公告)号：JPH02253159A
公开(公告)日：1990-10-11
申请号：JP7596989
申请日：1989-03-28
申请人： HITACHI LTD , HITACHI KYOWA KOGYO KK
发明人： ICHIMURA AKIRA , HIRANO SADAKUNI , OSUMI KATSUMI , MIZUNIWA FUMIO , KONASE ATSUSHI
IPC分类号： G01N30/96 , C02F1/42 , G01N30/00
摘要： PURPOSE:To optimize exchange frequencies by collecting plural test samples from an ion exchange medium and analyzing an ion exchange capacity in accordance with the change in the electrical conductivity between the inlet and outlet of the samples. CONSTITUTION:A sodium chloride soln. is put at 1 to 1,000ppm into a sample liquid vessel 1 and while the flow rate thereof is adjusted by a flow rate regulating valve 4 and a flow meter 5, the sample liquid is sent through a connecting piping 2 by a liquid feed pump 3 into an ion exchange medium vessel 7. The electrical conductivity and temp. in the inlet and outlet of the vessel 7 are measured by an electrical conductivity meter and thermometer 6 with the height of the ion exchange medium layer in the vessel 7 as the unit treatment height of the exchange medium and are inputted to a data processor 8 which measures the ion exchange capacity of the sample ion exchange medium at an arbitrary temp. and flow rate. The other necessary data are inputted to an external data input/output device 9 which calculates the quality of the treated water. The frequencies for the regeneration or exchange of the ion exchange medium are optimized in such a manner.

9. 发明专利

JPS60207057A APPARATUS FOR MEASURING ORGANIC CARBON IN WATER 失效
公开(公告)号：JPS60207057A
公开(公告)日：1985-10-18
申请号：JP6476984
申请日：1984-03-30
申请人： HITACHI LTD
发明人： MAEKOYA CHIAKI , IWASAKI HITOSHI , MIZUNIWA FUMIO , YATSUNO KOUMEI
IPC分类号： G01N31/00 , G01N33/18
摘要： PURPOSE:To measure low concn. org. carbon in water with high accuracy, by extracting CO2 formed by oxidizing org. carbon in water as CO2 in steam with an as possible as small amount of carrier gas. CONSTITUTION:A definite amount of fed specimen water 1 is collected by a metering coil 7 and added to a carrier liquid 2 by using a six-way valve 6 and the resulting mixture is sent to an inorg. carbon removing tank 8 while mixed with a reaction liquid 3. Subsequently, the liquid mixture, from which inorg. carbon was removed, is sent to a reaction coil 10 held to constant pressure and temp. and the org. substance in the specimen water 1 is oxidized by the reaction liquid 3. Thereafter, this liquid mixture is sent to a steam generation pipe 13, to which a definite amount of He is added from a carrier gas mixing valve 14, to be converted to steam and CO2 formed by the oxidation of the org. substance is extracted with He. Next, He containing steam and extracted CO2 is sent to an infrared analyzer 16 and org. carbon in the specimen water 1 is measured from the concn. of CO2.

10. 发明专利

JPS54138495A QUANTITATITVE DETERMINATION METHOD OF COBALT 失效
公开(公告)号：JPS54138495A
公开(公告)日：1979-10-26
申请号：JP4540678
申请日：1978-04-19
申请人： HITACHI LTD
发明人： MAEKOYA CHIAKI , TAKI MAMORU , MIZUNIWA FUMIO , TAKADA YOSHITADA
IPC分类号： G01N30/64 , G01N27/42
摘要： PURPOSE:To determine the slight quantity of Co in sample such as primary cooling water in atomic power plants with a liquid chromatography by applying the specific voltage to the working electrode of a flow type electrolytic cell which makes possible constant potential electrolysis. CONSTITUTION:Eluate from an eluate storage tank 1 is sent to a separating column 5 by a pump 2 but the sample 4 containing Co is added through the sample feed port 3 just before the column 5. The Co is component separated in the column 5 and is led into an electrolytic cell 6 to which the voltage lower by 0 to 0.3V than the positive voltage at which the components of the eluate or electrode material is electrolyzed is applied from a potentiostat 7, after which it is discharged as discharge liquid 9. In this apparatus, the current for the concentration of Co is amplified only when the Co has arrived the cell 6 and is recorded in a reocrder 8.

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