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1. 发明专利

JP2000126691A DRY SEPARATION OF WASTE PLASTIC BY SPECIFIC GRAVITY AND SHAPE 失效
公开(公告)号：JP2000126691A
公开(公告)日：2000-05-09
申请号：JP30653598
申请日：1998-10-28
申请人： NIPPON KOKAN KK
发明人： TATEFUKU TERUO , YAMAZAKI SHIGEKI , IWASAKI TOSHIHIKO
IPC分类号： B09B5/00 , B03B4/00 , B07B4/08 , B07B7/12 , B07B13/08 , B29B17/00
摘要： PROBLEM TO BE SOLVED: To separate plastics from the waste plastics in the general and industrial wastes in accordance with their kinds. SOLUTION: Air 10 is introduced into a tower 1a from its lower face, pulsated air 5 is simultaneously introduced from the side face of the tower 1a, and the air 10 and pulsated air 5 are injected into the waste plastics 6 in the lower 1a to form a fluidized bed 2 of the waste plastics 6, the waste plastic 6 are vibrated by the pulsated air 5 introduced from the side face of the fluidized bed 2 so that the waste plastics are separated into a plastic A and a plastic B. The pulsation frequency of the pulsated air 5 and the flow rate of the air 10 and pulsated air 5 are controlled to separate the plastics into the desired kinds. A chlorine-contg. plastic is separated from the waste plastics with high efficiency in this way.

2. 发明专利

JP2000126688A DRY SEPARATION OF WASTE PLASTIC BY SPECIFIC GRAVITY AND SHAPE 失效
公开(公告)号：JP2000126688A
公开(公告)日：2000-05-09
申请号：JP30652498
申请日：1998-10-28
申请人： NIPPON KOKAN KK
发明人： TATEFUKU TERUO , YAMAZAKI SHIGEKI , IWASAKI TOSHIHIKO
IPC分类号： B07B4/08 , B29B17/00 , B29K101/00 , B29K105/26
摘要： PROBLEM TO BE SOLVED: To separate and classify plastics from the waste plastics in the general and industrial wastes. SOLUTION: Pulsated air 5 is introduced into a tower 1a from its lower face, an ascending air current 7 is injected on the waste plastics 6 in the tower 1a to form a fluidized bed 2 of the waste plastics 6, the ascending air current 7 introduced from below the fluidized bed 2 is pulsated to vibrate the waste plastics 6 so that the waste plastics are separated into a plastic A and a plastic B. The pulsation frequency and flow rate of the ascending air current are controlled to separate the plastics into desired kinds. A chlorine-contg. plastic is separated from the waste plastics with high efficiency in this way.

3. 发明专利

JPH08283053A METHOD OF BURNING WASTE PLASTICS IN ROTARY KILN 失效
公开(公告)号：JPH08283053A
公开(公告)日：1996-10-29
申请号：JP11266395
申请日：1995-04-14
申请人： YOSHIZAWA SEKKAI KOGYO KK , NIPPON KOKAN KK
发明人： MATSUMURA SHUNSUKE , TANI MITSUO , AOYAMA EIJI , ITO HIROYASU , ISOZAKI SHINICHI , TATEFUKU TERUO , AOKI TAKEHIKO , SEKIGUCHI TAKESHI , WATABE MASAYUKI
IPC分类号： F23G5/20 , C04B2/10 , C04B7/44 , F23G7/12
摘要： PURPOSE: To obtain a method of burning waste plastics by blowing them together with main fuel in a rotary kiln. CONSTITUTION: This method is provided with (a) a process for making the waste plastic particles to a fine flux flow and (b) a process for blowing the fine flux flow of the waste plastic particles from the upper side 18 of a blowing position 14 of the main fuel into the rotary kiln as fuel and burning them. Besides, they are blown so that a landing range of the waste plastic particles blown into the rotary kiln as a fine flux flow is preferably in the range of 1/10-2/3 flame length of the main fuel.

4. 发明专利

JP2002263608A DETOXIFICATION PROCESS OF INCINERATION ASH AND INCINERATOR 失效
公开(公告)号：JP2002263608A
公开(公告)日：2002-09-17
申请号：JP2001063734
申请日：2001-03-07
申请人： NIPPON KOKAN KK
发明人： TATEFUKU TERUO , SHINAGAWA TAKUYA , NOTO TAKASHI
IPC分类号： F23J1/00 , B09B3/00 , F23G5/50
摘要： PROBLEM TO BE SOLVED: To provide an incineration ash detoxification process by which detoxification of toxic substances contained in incineration ash, such as halogen- based substances (e.g. dioxins) and heavy metals, can be performed inside an incinerator used, without using a fusion furnace for treating the incineration ash, and also to provide an incinerator capable of detoxifying such incineration ash by using the detoxification process. SOLUTION: This process involves, in an waste incinerator provided with fire grates, raising the temperature of incineration ash on certain one of the fire grates to >=250 deg.C, preferably by at least one of the following procedures (a) to (d): (a) controlling the movement rate of incineration ash on a final combustion stage fire grate; (b) heating incineration ash on the final combustion stage fire grate by using burners; (c) placing a barrier on the final combustion stage fire grate on its downstream side; and (d) supplying an oxidizing agent of a temperature exceeding ordinary temperature, to the inside of a combustion chamber from above the final combustion stage fire grate and also controlling the flow rate of the oxidizing agent supplied to the inside of the combustion chamber from below the final combustion stage fire grate.

5. 发明专利

JP2000254542A METHOD FOR SEPARATING CHLORINE-CONTAINING PLASTIC FROM WASTE PLASTIC BY CENTRIFUGAL SPECIFIC GRAVITY SEPARATION APPARATUS 失效
公开(公告)号：JP2000254542A
公开(公告)日：2000-09-19
申请号：JP6259499
申请日：1999-03-10
申请人： NIPPON KOKAN KK
发明人： YAMAZAKI SHIGEKI , TATEFUKU TERUO
IPC分类号： B03B5/28 , B29B17/00 , C10L5/48
摘要： PROBLEM TO BE SOLVED: To prevent the lowering of separation efficiency by preventing the internal clogging of a centrifugal specific gravity separation apparatus when chlorine-containing plastic is separated from waste plastics by the apparatus. SOLUTION: Waste plastics 10 are charged in a washing and mixing tank 2 by a conveyor 1 and washed with water (specific gravity liquid) while stirred and mixed by a stirrer 3. A slurry consisting of waste plastics and water is supplied to a centrifugal specific gravity separation apparatus main body 5 by a slurry supply pump 4 to be separated into a light material 7 useful for reutilization and a heavy material 7 containing chlorine-containing plastics corresponding to specific gravity difference with respect to water. In supplying the slurry to the centrifugal specific gravity separation apparatus main body 5, the flow rate of the supplied slurry is measured by a slurry flowmeter 8 and the speed of the charging conveyor 1 is controlled corresponding to the measured value. By this constitution, the amt. of waste plastic supplied to the centrifugal specific gravity separation apparatus main body 5 is adjusted to a predetermined value.

6. 发明专利

JP2000127161A METHOD FOR SEPARATION WASTES PLASTIC BY DRY SPECIFIC GRAVITY AND SHAPE SEPARATION 失效
公开(公告)号：JP2000127161A
公开(公告)日：2000-05-09
申请号：JP30652998
申请日：1998-10-28
申请人： NIPPON KOKAN KK
发明人： TATEFUKU TERUO , YAMAZAKI SHIGEKI , IWASAKI TOSHIHIKO
IPC分类号： B09B3/00 , B07B4/08 , B07B13/08 , B07B13/11 , B29B17/00 , B29B17/04
摘要： PROBLEM TO BE SOLVED: To separate chlorine-containing plastics from waste plastics in general and industrial wastes. SOLUTION: The waste plastic is comminuted, and granulated to a semi-fused state by a melt granulating apparatus in a temperature higher than a melting point of an olefin plastic 11 and lower than a melting point of a chlorine- containing plastic 12. Thus, the plastic 11 becomes a shape different from that of the chlorine-containing plastic. Then, the waste plastic of the semi-fused state is introduced into a dry separator 1. In the separator 1, the plastic 11 is separately recovered from a small specific gravity matter discharge side 7 and the plastic 12 is separately recovered from a large specific gravity matter discharge side 8 according to a specific gravity difference.

7. 发明专利

JPH10130650A DRY QUENCHING APPARATUS FOR RED-HOT COKE AND PRODUCTION OF COKE 失效
公开(公告)号：JPH10130650A
公开(公告)日：1998-05-19
申请号：JP30558296
申请日：1996-10-31
申请人： NIPPON KOKAN KK
发明人： ISOZAKI SHINICHI , YAMAGUCHI MOCHIMASA , TATEFUKU TERUO , WATABE MASAYUKI , ITAGAKI SHOZO
IPC分类号： C10B39/02 , C10B57/02 , C10B57/14
摘要： PROBLEM TO BE SOLVED: To efficiently convert low-temp. coke oven coke into blast furnace coke by installing a dry quenching apparatus for red-hot coke which has a cooling chamber and a spare chamber and into which an inert gas is blown from below and air is blown from a specifically structured nozzle installed in the spare chamber. SOLUTION: This apparatus comprises a quenching tower 1 comprising a cooling chamber 3 and a spare chamber 2 and equipped with an inert gas feed port installed at the lower part of the cooling chamber 3, a red-hot coke charge port installed at the upper part of the spare chamber 2, a cooled coke discharge section 16 installed below the cooling chamber 3, an upper air-inlet port 4 installed at the upper part of the spare chamber 2, and a center pipe 20 having nozzles 28 and installed vertically at the center. Coke excellent in properties is obtd. by charging red-hot coke just after medium- to low-temp. carbonization in a chamber oven into the quenching tower 1, blowing preheated air through the upper blowing port 4 and the center pipe 20 to reheat coke to 900 deg.C or higher to bake it, and cooling it.

8. 发明专利

JP2002206720A METHOD FOR REDUCING TOXIC SUBSTANCE IN EXHAUST GAS AND INCINERATOR 失效
公开(公告)号：JP2002206720A
公开(公告)日：2002-07-26
申请号：JP2001005924
申请日：2001-01-15
申请人： NIPPON KOKAN KK
发明人： TATEFUKU TERUO , NOTO TAKASHI
IPC分类号： F23G5/00 , F23G5/50
摘要： PROBLEM TO BE SOLVED: To provide a method for reducing a toxic substance in exhaust gas to enable suppression of the toxic substance, such as an organic chlorine compound and halogen compound, containing unburnt gas, such as carbon monoxide and aromatic hydrogen carbide in exhaust gas, and dioxin to low concentration. SOLUTION: Based on gas concentration in a combustion chamber and/or a component of incinerated ash, the movement speed of a part or a whole of a substance to be incinerated is controlled. Further, it is preferable that based on gas concentration in a combustion chamber and/or a component of incinerated ash, a flow rate of an oxidizing agent is controlled or based on gas concentration in the combustion chamber and/or a component of incinerated ash, a movement velocity of a part of a whole of a substance to be incinerated and a flow rate of an oxidizing agent are controlled.

9. 发明专利

JP2001212520A METHOD FOR SEPARATING PLASTICS 失效
公开(公告)号：JP2001212520A
公开(公告)日：2001-08-07
申请号：JP2000027250
申请日：2000-01-31
申请人： NIPPON KOKAN KK
发明人： YAMAZAKI SHIGEKI , TATEFUKU TERUO , MIYAZAWA TOMOHIRO
IPC分类号： B07B13/08 , B29B17/00
摘要： PROBLEM TO BE SOLVED: To separate chlorine-containing plastics from waste plastics. SOLUTION: The waste plastics 9 are crushed using a crusher 7 and an iron sphere (an intermediate specific gravity object) 10 with an apparent specific gravity of 1 is added to a table-type separator 1. In addition, the waste plastics 9 are separated/sorted out into plastics 9a with a high specific gravity (chlorine- containing plastics) which is larger than 1, plastics 9b with a low specific gravity which is smeller than 1 and plastics 9c accompanying the intermediate specific gravity object. The iron sphere 10 is separated and recovered from the plastics 9c accompanying the intermediate specific gravity object, using a magnetic separator 8, and can be reused.

10. 发明专利

JP2000317935A METHOD FOR GRANULATING WASTE PLASTIC 失效
公开(公告)号：JP2000317935A
公开(公告)日：2000-11-21
申请号：JP2000072478
申请日：2000-03-10
申请人： NIPPON KOKAN KK
发明人： YAMAZAKI SHIGEKI , TATEFUKU TERUO
IPC分类号： B29B17/00 , B29B17/04 , C10L5/48
摘要： PROBLEM TO BE SOLVED: To efficiently heat and granule by drying a waste plastic, regulating its moisture content to a specific value or below, and then granulating the plastic by a die granulator. SOLUTION: The waste plastic 6 in which a film-like plastic is separated is comminuted in a suitable size by a comminutor 2, heater or dried by an air flow by a dryer 3, or wet gravity separated, then dehydrated, or a chlorine- containing plastic is separated by a centrifugal specified gravity separator and simultaneously dehydrated to regulate its moisture content to 20% or below. Then, the plastic is granulated by avoiding a closure in the die by a die type granulator 4 while eliminating melt insufficiency or an excess melting of the plastic. The film-like plastic separated from the plastic 6 is also similarly treated, and granulated by the granulator 4. Thus, closure of the granulator 4 can be avoided, no trouble of granulating fault occurs, and granules 5 of good quality can be continuously obtained. The film-like plastic can also be improved in its granulating efficiency.

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