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21. 发明专利

JPS5391074A DESULFURIZATION AND DENITRATION METHOD 失效
公开(公告)号：JPS5391074A
公开(公告)日：1978-08-10
申请号：JP582677
申请日：1977-01-24
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TAKAHASHI SADAO , AKIMOTO HIDETOSHI , KAJI RIYUUICHI , HISHINUMA TAKAO , ARIKAWA KIJIROU
IPC分类号： B01D53/60 , B01D53/02 , B01D53/14 , B01D53/34 , B01D53/77 , C01B21/24
摘要： PURPOSE:To maintain high desulfurization and denitration rate extending over a long term, by contacting exhaust gas contained SO2 and NO, with mixed solution of ferrous EDTA complex and active carbon and removing NO and moreover, reducing oxidized ferric EDTA by SO2 in exhaust gas.

22. 发明专利

JPS5389882A REDUCING METHOD FOR FERRIC EDTA COMPLEX IN WET DENITRATION 失效
公开(公告)号：JPS5389882A
公开(公告)日：1978-08-08
申请号：JP389277
申请日：1977-01-19
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KAJI RIYUUICHI , AKIMOTO HIDETOSHI , HISHINUMA TAKAO , TAKAHASHI SADAO
IPC分类号： B01D53/14 , B01D53/34 , B01D53/56 , B01D53/77
摘要： PURPOSE:To increase absorption ratio of a absorption soln. and to keep NO removal ratio at a high level for a long time by reduction of ferric EDTA complex contained in a denitration absorption soln. formed by oxidation with O2 contained in flue gas to ferrous EDTA complex in the presence of KI.

23. 发明专利

JPH10259910A COAL GASIFIER AND OPERATION THEREOF 失效
公开(公告)号：JPH10259910A
公开(公告)日：1998-09-29
申请号：JP6615497
申请日：1997-03-19
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , MORIHARA ATSUSHI , KOYAMA SHUNTARO , TAKAHASHI SADAO , AKIYAMA TORU
IPC分类号： B65G53/56 , F23K3/02
摘要： PROBLEM TO BE SOLVED: To provide a coal gasifier which enables a free layout of a coal supply system and a sharp reduction in its arrangement space. SOLUTION: About the outer periphery of two or more coal burners 7 which are embedded in an external wall 33' and a gasifying furnace fireproof wall 41 of a gasifying furnace, a ring-shaped distributor 39 is placed and connected by the burners 7 and a branch pipe 50. A coal supply line 24, which supplies a solid gas two-phase flow 47 composed of pulverized coal and a carrier gas, is connected tangentially of the ring-shaped distributor 39, and a multi-phase flow containing charcoal 35 becomes a swirl to be equally distributed to each distributor 50. When the differential pressure between the inside of the gasifying furnace and each distributor 50 becomes unbalanced, a high-speed inert gas is injected from a nozzle 46 to the inside of the distributer 39 so as to accelerate the swirl and restore the performance of equally distributing.

24. 发明专利

JPH1081886A CHAR CONVEYING EQUIPMENT 失效
公开(公告)号：JPH1081886A
公开(公告)日：1998-03-31
申请号：JP23548696
申请日：1996-09-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , KOYAMA SHUNTARO , MORIHARA ATSUSHI , NAGANUMA YOSHIO , TAKAHASHI SADAO , KIDA EIJI
IPC分类号： C10J3/50
摘要： PROBLEM TO BE SOLVED: To provide char conveying equipment which can feed finer char particles into an oven without stagnation while separating the char discharged from a coal gasifier and collected by a cyclone into finer and coarser particles by subjecting it to an air stream without resort to mechanical means. SOLUTION: This equipment has a swirling air stream container 57 which is provided at the center on the top thereof with a char inlet pipe 71 for introducing char 25 from a cyclone and in which a swirling stream around the gravitational axis is formed by a conveying gas 27, a char discharge pipe 41 drooping from the peripheral part at the bottom of the container 57, a char conveying duct 31 branching horizontally from the pipe 41 at its lower end and extending to a coal gasifier, and a coarse particle separation pipe 72 drooping from the bottom port of the pipe 41. The char 25 is continuously sucked into the center of the swirling stream in the container 57 and allowed to flow out through the pipe 41 by the conveying gas 27, and char particles coarser than a certain size corresponding to the speed of the gas flowing down in the pipe 72 are allowed to fall, while finer char particles 25' are continuously conveyed through the duct 31.

25. 发明专利

JPH0987639A SLAG TAP STRUCTURE AND GASIFICATION APPARATUS USING THE SLAG TAP 失效
公开(公告)号：JPH0987639A
公开(公告)日：1997-03-31
申请号：JP24410495
申请日：1995-09-22
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , KOYAMA SHUNTARO , MORIHARA ATSUSHI , KUDO TAKANORI , TAKAHASHI SADAO , IWAHARA MASATO
IPC分类号： C10J3/46 , C10J3/48
摘要： PROBLEM TO BE SOLVED: To obtain a slag tap structure having a simple structure, capable of carrying out stable continuous operation for a long time without causing clogging due to attachment of deposition to the interior of a gasification furnace and the part after a gasification furnace reacting part and provide a gasification apparatus using the slag tap. SOLUTION: The gasification furnace 7 is lined with a fire-resistant material 11 onto the water-cooling wall of its pressure container 15 and has upper and lower stage reaction zones 8 and 9 in its gasification chamber 22. The slag tap 17 having a round type shape in the intermediate of a slit part, without dam is installed in the center part of slag tap part 25 in the lower part of a coal burner 5 of the lower stage reaction zone 9 in the gasification chamber 22 in the lower part of the gasification furnace 7. Active chair is produced in the upper stage reaction zone 8 of the gasification chamber 22 and ash in coal is kept at a melting temperature or above in the lower stage reaction zone 9. Coal burners 5 and 6 are installed in the lower stage reaction zones 8 and 9 of the gasification furnace and the active char is fed together with rotating and lowering flow to a lower-stage high temperature zone in the upper stage reaction zone 8 and reacted with carbon dioxide, steam and then the ash is kept in melted slag state.

26. 发明专利

JPH0971783A DEPOSIT PEELING SYSTEM FOR ENTRAINED BED POWERED SOLID GASIFICATION EQUIPMENT 失效
公开(公告)号：JPH0971783A
公开(公告)日：1997-03-18
申请号：JP25460495
申请日：1995-09-06
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , KOYAMA SHUNTARO , MORIHARA ATSUSHI , NAGANUMA YOSHIO , TAKAHASHI SADAO , KUDO TAKANORI
IPC分类号： C10B43/02
摘要： PROBLEM TO BE SOLVED: To obtain a deposit peeling system which accurately detects the state of deposit of ash, char and the like, automatically curbs the deposit of the ash, char and the like based on the result of the detection and appropriate for an effective peeling of the deposited ash, char and the like for an entrained bed gasification equipment. SOLUTION: This system is equipped with a detection device 53 composed of a set of two electrodes 51 and 52 to detect the thickness of a deposit on the inside wall of the inlet 29 for the heat recovery unit of an entrained bed gasification equipment, a data accumulation device 54 to convert, the potential difference or resistance to the thickness of the deposit, and a control device 55 to peel off the deposit by blowing a deposit peeling gas 50 (60) against the inside wall of the inlet for the heat recovery unit and the electrodes, when the thickness of the deposit reaches a previously set value, and to suppress an oxidizing agent 7 fed to a gasification reaction unit 22, when a repetitive interval (speed) between the depositing of the deposit and its peeling reaches a previously set value.

27. 发明专利

JPH0517030A POWDER SOLID TRANSPORT DEVICE AND METHOD 失效
公开(公告)号：JPH0517030A
公开(公告)日：1993-01-26
申请号：JP19741091
申请日：1991-07-12
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , KOYAMA SHUNTARO , TAKAHASHI SADAO , UEDA AKIO
IPC分类号： B65G53/66 , B65G65/48 , F23K3/00
摘要： PURPOSE:To provide a powder solid transport device that is not affected with a feed hopper side discharge condition and can easily control the quantity of material feed and in addition, can conduct continuous feed stably. CONSTITUTION:Material particles 3 are made to fall down freely by means of a fixed quantity discharge feeder 13 whose purpose is to discharge material particles 3 from a feed hopper 10, and fed to the inside of an overflow connection pipe 15 provided at the lower part of the feeder 13, and fed at all times so that material particles 3 may not run short in the pipe 15, and adjustment is made so that a filling quantity in the pipe 15 may become fixed at a certain level. The outer wall of the pipe 15 has a weight measuring load cell 36 and a filling level measuring differential pressure gauge 18. A material feed quantity adjusting feeder 14 is provided at the lower part of the pipe 15, and a material feed quantity is adjusted.

28. 发明专利

JPH0485395A STABLE FEEDING OF STARTING POWDER, METHOD AND APPARATUS FOR AND CONTROL SYSTEM THEREOF 失效
公开(公告)号：JPH0485395A
公开(公告)日：1992-03-18
申请号：JP19622290
申请日：1990-07-26
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TANAKA SHINJI , KOYAMA SHUNTARO , TAKAHASHI SADAO , UEDA AKIO
IPC分类号： F23K3/02 , C10J3/46 , C10J3/50
摘要： PURPOSE:To control accurately the feeding of a powdery starting material into a reactor of high-pressure system by roughly controlling the feeding by changing the pressure of a pressure hopper and then finely controlling it by changing the rotational speed of a feeder. CONSTITUTION:In feeding a powdery starting material into a reactor of high pressure by the lock hopper system consisting of a low pressure hopper 2, an intermediate pressure hopper 4, a feeding pressure hopper 9, a starting powder discharging feeder 10 and a powder mixing chamber 12, the feed of the powdery starting material is controlled by the use of a feed controlling mechanism 30 constituted of a data processor 15 provided with a raw material computation device, a raw material feed controller 28 and pressure difference controllers 5, 16 for controlling the pressure difference between an ejector pressure and a feeding pressure hopper 9 and the pressure difference between the gasification furnace and the feeding pressure hopper 9, respectively. A rough control is made by changing the pressure of the feeding pressure hopper 9 and thereafter a fine control is made by changing the rotational speed of the feeder 10, after which the powder is fed into a reactor of high-pressure system.

29. 发明专利

JPS55127125A METHOD AND APPARATUS FOR DESULFURIZATION OF EXHAUST GAS 失效
公开(公告)号：JPS55127125A
公开(公告)日：1980-10-01
申请号：JP3461779
申请日：1979-03-23
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： ARASHI NORIO , HISHINUMA TAKAO , AKIMOTO HIDETOSHI , TAKAHASHI SADAO , NAKASHIMA FUMITO , GOMI KENICHI
IPC分类号： B01D53/50 , B01D53/04 , B01D53/81 , B01J20/20 , C01B17/04 , C01B17/60 , C01B32/336
摘要： PURPOSE:To desulfurize exhaust gas and recover SO2 in the gas in the form of S simply without the necessity for the manufacture of reducing agent separately by using a part of fuel coal consistently from the adsorption process of SO2 to its reduction process to S in the desulfurization of exhaust gas. CONSTITUTION:Coal is pulverized into the dust coal 23 and then burned in the boiler 1. On the other hand, a part of unpulverized coal is supplied to the coal carbonizator 4 to manufacture semi-coke which is, in turn, packed into the adsorption tower 2. Then, the combustion waste gas from the boiler 1 is introduced into the adsorption tower 2 to cause the SO2 component present in the waste gas to adsorb in the semi-coke and then discharged from the stack 10. The SO2-adsorbed semi-coke is then sent to the separation tower 3 where it is heated 300-400 deg.C by the high-temperature inert gas circulation pipe 20, whereby SO2 is released from the semi-coke, introduced into the converter 5 to reduce SO2 by the semi-coke present into the element S, and then recovered in the form of the liquid sulfur 8 by the sulfur condenser 7.

30. 发明专利

JPS5384890A IMPROVING METHOD FOR DENITRATION PERFORMANCE OF SULFITE IONNIRON EDTA 失效
公开(公告)号：JPS5384890A
公开(公告)日：1978-07-26
申请号：JP6377
申请日：1977-01-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TAKAHASHI SADAO , AKIMOTO HIDETOSHI , KAJI RIYUUICHI , HISHINUMA TAKAO , ARIKAWA KIJIROU
IPC分类号： B01D53/56 , B01D53/34 , B01D53/77
摘要： PURPOSE:To maintain high denitration performance of SO -3-iron EDTA over a long time by adding a ferric EDTA complex in more than a specified molar ratio to SO -

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