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1. 发明专利

CA1249297A METHOD OF MANUFACTURING DIPHENYLMETHANE DICARBAMIC ACID DIESTERS 未知
公开(公告)号：CA1249297A
公开(公告)日：1989-01-24
申请号：CA517877
申请日：1986-09-10
申请人： NIPPON KOKAN KK
发明人： IKARIYA TAKAO , ITAGAKI MASANORI , MIZUGUCHI MASATSUGU , SAKAI ITARU , TAJIMA OSAMU
IPC分类号： C07C269/00 , C07B61/00 , C07C67/00 , C07C239/00 , C07C269/06 , C07C271/06 , C07C271/28 , C07C125/073
摘要： According to a method of manufacturing a diphenylmethane dicarbamic acid diester by reacting an N-phenyl carbamic acid ester with a methylating agent in an aqueous acid solution, the aqueous acid solution is an aqueous inorganic acid solution, and the concentration of the N-phenyl carbamic acid ester in the aqueous acid solution is not more than the solubility thereof at the reaction temperature.

2. 发明专利

CA1251221A METHOD OF MANUFACTURING AROMATIC URETHANE AND INTERMEDIATE PRODUCT THEREOF 未知
公开(公告)号：CA1251221A
公开(公告)日：1989-03-14
申请号：CA517404
申请日：1986-09-03
申请人： NIPPON KOKAN KK
发明人： IKARIYA TAKAO , ITAGAKI MASANORI , MIZUGUCHI MASATSUGU , SAKAI ITARU , TAJIMA OSAMU
IPC分类号： C07C273/18 , C07C125/065 , C07C127/19
摘要： The present invention relates to a method of manufacturing aromatic urethane, comprising the urea producing step of reacting an aromatic mononitro-compound, an aromatic primary amine, and carbon monoxide being reacted using a catalyst containing a platinum group metal-containing compound as a major constituent to prepare N,N'-di-substituted urea. The resultant N,N'-di-substituted urea is reacted with a hydroxyl groupcontaining organic compound to prepare an aromatic primary amine and aromatic urethane, and the aromatic primary amine is separated to obtain aromatic urethane.

3. 发明专利

JP2002316183A METHOD AND APPARATUS FOR TREATING SEWAGE 失效
公开(公告)号：JP2002316183A
公开(公告)日：2002-10-29
申请号：JP2001124761
申请日：2001-04-23
申请人： NIPPON KOKAN KK
发明人： SAKAI ITARU , MIZUNO KENICHIRO , FUKADA SHOHEI
IPC分类号： C02F3/12 , B01D24/02
摘要： PROBLEM TO BE SOLVED: To improve the treatment capacity of sewage without adding a facility to existing facilities such as a reaction tank and precipitation basins. SOLUTION: Supplied sewage 1 is separated into solid and liquid in the first precipitation basin 2 by gravity sedimentation, and initial precipitation basin overflow water 5 which is supernatant after precipitation treatment is supplied to the reaction tank 6. Reaction liquid subjected to activated sludge treatment in the tank 6 is separated into solid and liquid by a solid-liquid separator 91, and the filtrate 13 is taken out by a filtrate extraction pump 14 and supplied to the final precipitation basin 19. Liquid separated again into solid and liquid in the final precipitation basin 19 by gravity sedimentation is further separated into solid and liquid by a solid-liquid separator 92, and the filtrate 20 is obtained by being taken out by a filtrate extraction pump 21.

4. 发明专利

JP2002166111A SOLID-LIQUID SEPARATION APPARATUS 失效
公开(公告)号：JP2002166111A
公开(公告)日：2002-06-11
申请号：JP2000368169
申请日：2000-12-04
申请人： NIPPON KOKAN KK
发明人： FUKADA SHOHEI , MIZUNO KENICHIRO , SAKAI ITARU
IPC分类号： B01D65/02 , B01D24/46 , B01D29/39 , B01D33/21 , B01D33/44 , B01D33/58 , B01D65/08
摘要： PROBLEM TO BE SOLVED: To efficiently filter water to be treated containing a suspended substance and to make an apparatus small-sized and inexpensive. SOLUTION: A solid-liquid separation apparatus is equipped with a filter device A equipped with a filter body 1 wherein a plurality of flat plate-shaped hollow filter members 2 having filter media arranged at least on one outer surfaces thereof and having treated water discharge means provided to the outer peripheral parts thereof are superposed one upon another so as to leave an interval up and down between the filter members, a scraper 10 disposed to the hollow rotary shaft 11 piercing the center part of the filter body 1 in a spaced apart state to scrape off the cake layers formed on the outer surfaces of the filter media and the water gathering pipe 8 communicating with the treated water discharge means, and a storage tank B of water to be treated having an inflow port of water to be treated containing the suspended substance and an outflow port 26 and housing the filter device A.

5. 发明专利

JP2002018497A SLUDGE FILTRATION AND CONCENTRATION APPARATUS 失效
公开(公告)号：JP2002018497A
公开(公告)日：2002-01-22
申请号：JP2000208010
申请日：2000-07-10
申请人： NIPPON KOKAN KK
发明人： SAKAI ITARU , MIZUNO KENICHIRO , FUKADA SHOHEI , UDAGAWA SATORU , KAMEZAKI SHUNICHI
IPC分类号： B01D33/06 , B01D24/46 , B01D33/44 , B01D33/58 , C02F11/12
摘要： PROBLEM TO BE SOLVED: To provide a sludge filtration and concentration apparatus which can efficiently concentrate sludge since a filtration drum is not clogged and of which the maintenance and control can be easily done. SOLUTION: This apparatus is equipped with a sludge storage vessel 1, a bottomed cylindrical filtration drum 4 which is vertically installed in the vessel 1 and to which a filtered liquid discharge pipe 8 is connected, and a scraper 9 for scraping sludge cake deposited on the drum 4. The trunk of the drum 4 is wound with a plurality of layers of a filtration screen 6, and the drum 4 and the scraper 9 are relatively rotated around the central axis of the drum 4.

6. 发明专利

JP2000262817A WASTEWATER TREATMENT APPARATUS 失效
公开(公告)号：JP2000262817A
公开(公告)日：2000-09-26
申请号：JP7418799
申请日：1999-03-18
申请人： TOKYO METROPOLITAN GOV , NIPPON KOKAN KK
发明人： SHIMIZU YOJI , KONO KINICHIRO , SUZUKI KIYOSHI , SAKAI ITARU , MIZUNO KENICHIRO , OKUYAMA TAKASHI , ISHII ARIMITSU
IPC分类号： B01D33/04
摘要： PROBLEM TO BE SOLVED: To efficiently carry out solid-liquid separation and concentration treatment of a large quantity of sludge generated in wastewater treatment facilities independently of the properties the sludge. SOLUTION: This wastewater treatment apparatus is provided with a wastewater chamber 8 having a wastewater supply port 9 and a concentrated wastewater discharge port, a filtered water chamber 11 having a filtered water discharge port 12, a filtration. means 15 for filtering the wastewater supplied to the wastewater chamber 8, and a filter cloth washing means 18. The filtration means 15 is provided with a filter cloth 18 circularly and endlessly turned in the vertical direction and immersed in the wastewater in the wastewater chamber 8 in the lower part: the filter cloth 18 runs while covering the opening part 14: and the washing means is installed above the liquid surface in the ascending side of the filter cloth 18 in the wastewater chamber 8. In the wastewater treatment apparatus with such a structure, the wastewater supply port 9 is formed in the wastewater side wall in the descending side of the filter cloth and the concentrated wastewater discharge port is formed in the wastewater side wall in the ascending side of the filter cloth of the wastewater chamber 8 and a solid matter releasing means for removing the solid matter adhering to the filter cloth 18 is installed in the lower part of the washing means.

7. 发明专利

JP2000005506A WASTE LIQUID TREATING DEVICE HAVING FLOCCULANT ADDING MEANS 失效
公开(公告)号：JP2000005506A
公开(公告)日：2000-01-11
申请号：JP17309598
申请日：1998-06-19
申请人： SHIMIZU YOJI , NIPPON KOKAN KK
发明人： SHIMIZU YOJI , NOGUCHI HIROSHI , SAKAI ITARU , OKUYAMA TAKASHI , SHINOHARA JUNJI
IPC分类号： B01D21/02 , B01D21/01 , B01D29/09 , B01D33/04
摘要： PROBLEM TO BE SOLVED: To efficiently separate solid from liq. and to concentrate the sludge generated in a sewage disposal plant regardless of the properties of the sludge. SOLUTION: This device consists of a waste liq. chamber 8 having a waste liq. inlet 9 and a concd. waste liq. outlet 10, a filtrate chamber 11 having a filtrate outlet 12, a filter means 15 provided in the waste liq. chamber 8 and having a filter cloth 18 for filtering the waste liq. supplied to the waste liq. chamber 8 and a cleaning means 19 for cleaning the filter cloth 18. At least one protrusion 13 protruding into the waste liq. chamber 8 is formed in the waste liq. chamber 8, an opening 14 communicating with the waste liq. chamber 8 is furnished to the protrusion 13, and the filter cloth 18 travels while covering the opening 14. In this waste liq. treating device, a flocculant adding means 20 is provided to add a flocculant to the waste liq. supplied in the waste liq. chamber 8.

8. 发明专利

JPH1034198A TREATMENT OF TAP WATER SLUDGE 失效
公开(公告)号：JPH1034198A
公开(公告)日：1998-02-10
申请号：JP19469296
申请日：1996-07-24
申请人： NIPPON KOKAN KK
发明人： SAKAI ITARU , TAKECHI TATSUO , MIZUNO KENICHIRO
IPC分类号： C02F11/14
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive tap water sludge treatment method capable of increasing the density of aluminum of an aluminum sulfate soln, discharged by acid treatment to 1% of more in terms of Al2 O3 . SOLUTION: A flocculate containing aluminum is added to raw water for tap water in a mixing basis 1 and a suspended substance is flocculate in a flock forming basin 2 to sediment flocs in a sedimentation basin 3. The sedimented sludge is concentrated in a sludge concentration tank 4 and further concentrated by a centrifugal concentrator 5a so that solid. wt. concentration becomes 5% or more. This conc. sludge is treated with sulfuric acid in an acid treatment tank 6 and subjected to centrifugal separation treatment by a centrifugal concentrator 7a to be separated into an aluminum surface soln. and sludge. This separated sludge is neutralized to be stored in a sludge storage tank 8 and dehydrated by a dehydrator 9 to obtain a dehydrated cake. The aluminum sulfate soln. is stored in a regeneration aluminum sulfate storage tank 10 to be reutilized as a flocculent.

9. 发明专利

JPH08108136A PIPING MATERIAL 失效
公开(公告)号：JPH08108136A
公开(公告)日：1996-04-30
申请号：JP24771994
申请日：1994-10-13
申请人： NIPPON KOKAN KK
发明人： KANEKO MASAHITO , SAKAI ITARU , NAKAMURA TOMOMICHI , YASUHARA MITSUTATSU
IPC分类号： B05D5/00 , B05D7/14 , B05D7/24 , B32B15/08 , B32B15/085
摘要： PURPOSE: To provide a piping material which is used for a kitchen, indoors, outdoors and for a laying part and has good heat resistance, flame-retardancy, weather resistance and appearance by forming an outer layer of an alloy of AAS/PBT containing a flame retardant and covering a steel pipe with the outer layer through an adhesive layer consisting of an adhesive polyolefin having water resistance. CONSTITUTION: An outer layer is formed of an alloy of AAS/PBT containing a flame retardant and a steel pipe is covered with the outer layer through an adhesive layer consisting of an adhesive polyolefin having water resistance. Hereupon, melt viscosity of the alloy of AAS/PBT is regulated within a range of 6×10 -5×10 poise in a range of 1×10 -1×10 sec shear rate. The flame retardant is a nonhalogen-based one and the amount to be added is regulated to 0.1-60wt.%. The steel pipe coated with the resin passes the fire retarding compartment penetration conditions required for a kitchen because the said steel pipe has high heat resistant temperature and flame-retardancy. Furthermore, the steel pipe coated with the resin is used outdoors and for laying and has excellent heat resistance, flame-retardancy, weather resistance and appearance and generation of rust in the steel pipe is inhibited.

10. 发明专利

JPH08108134A PIPING MATERIAL 失效
公开(公告)号：JPH08108134A
公开(公告)日：1996-04-30
申请号：JP24771794
申请日：1994-10-13
申请人： NIPPON KOKAN KK
发明人： KANEKO MASAHITO , SAKAI ITARU , NAKAMURA TOMOMICHI , YASUHARA MITSUTATSU
IPC分类号： B05D5/00 , B05D7/14 , B05D7/24 , B32B15/08 , B32B15/085
摘要： PURPOSE: To provide a piping material which is used indoors, outdoors and for a laying part and has good heat resistance, flame-retardancy, weather resistance and appearance by forming an outer layer of an ethylene-ethyl acrylate copolymer containing a flame retardant and covering a steel pipe with the outer layer through an adhesive layer consisting of an adhesive polyolefin having water resistance. CONSTITUTION: An outer layer is formed of an ethylene-ethyl acrylate copolymer containing a flame retardant and a steel pipe is covered with the outer layer through an adhesive layer consisting of an adhesive polyolefin having water resistance. Hereupon, melt viscosity of the ethylene-ethyl acrylate copolymer is regulated within a range of 6×10 -5×10 poise in a range of 1×10 -1×10 sec shear rate. The flame retardant is a nonhalogen-based one and the amount to be added is regulated to 0.1-60wt.%. The steel pipe covered with the resin passes the fire retarding compartment penetration conditions required for a kitchen because the said steel pipe has high heat resistant temperature and flame-retardancy. Since adhesive force of the coated resin is excellent for the steel pipe, generation of rust in the steel pipe is inhibited.

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