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61. 发明专利

JPS6081015A DIRECT CAUSTICIZING METHOD USING FLUIDIZED BED 失效
公开(公告)号：JPS6081015A
公开(公告)日：1985-05-09
申请号：JP18936583
申请日：1983-10-12
申请人： BABCOCK HITACHI KK
发明人： KISHIGAMI KUNIO , TAKAHASHI YUKIO
IPC分类号： B01J8/18 , B01J8/24 , C01D1/02 , C01D1/22 , D21C11/12
摘要： PURPOSE:To recover efficiently an Na component from a black liquor generated at a paper plant by forming a fluidization medium of an abrasion-resistant and chemically stable substance, and releasing and removing Na components and metallic compds. formed on the surface of the medium, and hydrolyzing the removed substance. CONSTITUTION:A black liquor and Fe2O3 are mixed by a mixer 16, and the mixture is sent to a fluidized-bed furnace 1. A fluidized bed is formed in the fluidized-bed furnace 1 of a medium (silica sand, MgO, etc.) which is highly abrasion resistant and does not react with the black liquor. An NaFeO2 layer is formed on the circumference of the fluidization medium. The medium particles 6 are sent to a cooler 2 and cooled, and then supplied into a separator 3 wherein the NaFeO2 layer adhering to the surface of the medium particles 6 are mechanically released and removed. The removed NaFeO2 layer is sent to a hydrolysis stage 17 wherein the NaFeO2 is hydrolyzed into Fe2O3 and NaOH. The Fe2O3 is resupplied into the mixer 16, and the NaOH is reused in a pulp-making stage. The consumption of the metal oxide and heat can be remarkably reduced in this way.

62. 发明专利

JPS58189032A Activation of adsorbent 失效
标题翻译：吸附剂的活化
公开(公告)号：JPS58189032A
公开(公告)日：1983-11-04
申请号：JP7034182
申请日：1982-04-28
申请人： Babcock Hitachi Kk
发明人： KAKO HIROYUKI , NISHIMURA YASUYUKI , TAKAHASHI YUKIO
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01J20/34
摘要： PURPOSE: To carry out the activating treatment of an adsorbent at a relatively low temp. in good efficiency, by a method wherein sulfur dioxide and steam are adsorbed by a carbonaceous adsorbent reduced in the adsorbing capacity thereof in the absence of oxygen and, after adsorption, desorbed under heating.
CONSTITUTION: An adsorbent having sulfur dioxide adsorbed thereby enters from an adsorbent inlet pipe 1 and, in a process moved to an adsorbent outlet pipe 2, indirectly heated by a heat conductive pipe 3 to decompose sulfuric acid in the adsorbent. When this adsorbent is subjected to desorption in a desorbing tower, a low temp. zone of 100W200°C is formed in the desorbing tower and sulfur dioxide and steam are adsorbed by the deteriorated adsorbent in this zone. When this adsorbent enters a high temp. zone of 350W500°C, the desorption of sulfur dioxide adsorbed in the adsorbing tower is carried out while the desorption of sulfur dioxide adsorbed in the low temp. zone is also carried out simultaneously. By this method, oxygen in the adsorbent is removed in a carbon dioxide form to activate the adsorbent.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：在较低温度下进行吸附剂的活化处理。通过其中二氧化硫和蒸汽被吸附在不存在氧的吸附能力下吸附的二氧化碳和蒸汽并且在吸附之后被加热解吸的方法。构成：吸附有二氧化硫的吸附剂从吸附剂入口管1进入，并且在移动到吸附剂出口管2的过程中被导热管3间接加热以分解吸附剂中的硫酸。当这种吸附剂在解吸塔中进行解吸时，在解吸塔中形成100-200℃的区域，二氧化硫和蒸汽在该区域被劣化的吸附剂吸附。当这种吸附剂进入高温时区域为350-500摄氏度，吸附塔中吸附的二氧化硫的解吸是在二氧化硫在低温下吸附的同时进行的。区域也同时进行。通过这种方法，吸附剂中的氧气以二氧化碳形式除去以活化吸附剂。

63. 发明专利

JPS5719078A DISPOSAL OF FLY ASH 失效
公开(公告)号：JPS5719078A
公开(公告)日：1982-02-01
申请号：JP9261080
申请日：1980-07-09
申请人： BABCOCK HITACHI KK
发明人： KUWABARA TAKANORI , KAMIGUCHI TAIJI , TAKAHASHI YUKIO
IPC分类号： C04B18/08 , B09B3/00 , C04B22/06
摘要： PURPOSE:To remove ammonia content from fly ash with high efficiency, by adding water to fly ash which was modified by addition of an alkali so that the pH of a solution prepared by dissolving 1g of the ash in 100ml of water will be 10 or higher, and deaerating the fly ash. CONSTITUTION:An alkali 3, e,g., quick lime, slaked lime, limestone or the like, is added to fly ash to modify the ash so that the pH of its aqueous solution obtained by adding 1g of the ash to 100ml of water will be 10 or higher. The fly ash is then introduced into a reactor 3, where it is mixed and reacted with water under an agitating condition to liberate ammonia. Ammonia-contg. exhaust gas is introduced through a pipe line 8 into a ammonia recovery tower 5, where the ammonia content is separated by adsorption before the exhaust gas is discharged into the air, or reused as a reducing agent to be fed to the exhaust gas-feed line 11 of an ammonia- reducing denitrifier 10.

64. 发明专利

JPS56108513A REMOVAL OF SULFUR OXIDE IN WASTE GAS 失效
公开(公告)号：JPS56108513A
公开(公告)日：1981-08-28
申请号：JP958480
申请日：1980-01-30
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , KATOU YASUYOSHI , TAKAHASHI YUKIO
IPC分类号： B01D53/50 , B01D53/34 , B01D53/60 , B01D53/74 , B01D53/81 , C01F11/46
摘要： PURPOSE:To lessen the number of attendant facilities for simplifying a desulfurization apparatus by a method in which SO2 in waste gas in adsorbed on activated carbon in the presence of water, O2 and NH3 gas, and then the activated carbon used in treatment is reacted with lime stone to convert SO2 into gypsum which is in turn recovered. CONSTITUTION:Waste gas 2 is introduced into the lower part of a moving bed type adsorption tower 3 where it is brought into contact with activated carbon in a counterwise manner. SO2 is then converted into dilute sulfuric acid with moisture and O2 present in the waste gas and the dilute sulfuric acid is reacted with NH3 gas 11 from a reactor tank 4 and adsorbed in the form of (NH4)2SO4. Then, the activated carbon used is sent to the reactor tank 4 where it is reacted with water 5 and lime stone 6 suppled there to form gypsum and NH3 gas which is in turn recycled to the adsorption tower 3 for reuse. Slurried gypsum and activated carbon are screened in a separation tower 7 and the gypsum 8 is dried and stored. The activated carbon 9 washed with sprayed water to remove adhered gypsum is dried in a preheater 10 and then recycled to the adsorption tower 3 for reuse. The gas 12 deprived of SO2 is released through a dust collector 13.

65. 发明专利

JPS5645983A MANUFACTURE OF SEMICOKE 失效
公开(公告)号：JPS5645983A
公开(公告)日：1981-04-25
申请号：JP12143379
申请日：1979-09-20
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , TAKAHASHI YUKIO , KAKO HIROYUKI
IPC分类号： C10B49/00 , C10B57/14
摘要： PURPOSE:To manufacture semicoke without troubles due to tar fraction, by a method in which a carburization gas containing tar vapor formed in the manufacture of semicoke is brought into contact with an inert medium to coagulate and arrest the tar vapor. CONSTITUTION:Coal for carburization, having a grain size of 5-10mm., is supplied through the screw conveyer 2 from the hopper 1 into the inside-heating type carburization furnace 7, where the coal is carburized at 600-700 deg.C and semicoke obtained is taken out of the upside of the furnace 7 and stored. On the other hand, the carburization gas containing tar vapor formed at the same time is introduced through the line 9 into the moving bed 10, where it is brought into cocurrentwise contact with an inert medium supplied from the hopper 11, whereby the tar vapor is cogulated and adsorbed on the inert medium. Then, the inert medium is orderly drawn out of the lower part of the moving bed 10 and sent to the fluidized layer 14 for incineration, where the tar fraction is burned at 300-400 deg.C.

66. 发明专利

JPS5645982A MANUFACTURE OF SEMIICOKE 失效
公开(公告)号：JPS5645982A
公开(公告)日：1981-04-25
申请号：JP12144579
申请日：1979-09-20
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , TAKAHASHI YUKIO , KAKO HIROYUKI
IPC分类号： C10B57/00
摘要： PURPOSE:To obtain a semi-coke without troubles due to tar fraction, by a method in which a carbonization gas containing tar vapor formed when coal is carbonized is introduced into a coal-packed layer to arrest tar content by precooled coal and then incinerated. CONSTITUTION:Coal for carbonization, having a grain size of 5-10mm., is introduced through orderly the endless chain conveyer 2, the preheater 3 and the intermediate trap 4 from the hopper 1 into the carbonization furnace 5, where the coal is heated at 600-700 deg.C for carbonization and tar fraction formed there is introduced with carbonization gas in the form of the tar vapor 6 into the coal-packed tower 8 through the upside of the carbonization furnace 5 and then mostly adsorbed on the surface of precooled coal and removed. The coal which has adsorbed the tar amply is burned by the combustion burner 11 at an excess air ratio of 10-20% in the coal- packed tower 8, and the steam-rich waste gas 9 formed then is sent to the reactivation furnace 10 for utilizing it in the reactivation of the semi-coke obtained in the carburization furnace 5.

67. 发明专利

JPS5645981A MANUFACTURE OF SEMIICOKE 失效
公开(公告)号：JPS5645981A
公开(公告)日：1981-04-25
申请号：JP12144479
申请日：1979-09-20
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , KAKO HIROYUKI , TAKAHASHI YUKIO
IPC分类号： C10B49/10
摘要： PURPOSE:To obtain a highly reactive and homogeneous semi-coke, by a method in which coal is put into a fluidized bed-carbonization furnace packed with a heat medium of a grain size smaller than that of coal and then directly heated for carbonization while fluidizing the coal and the heat medium by means of a heating gas. CONSTITUTION:The coal 8 for carbonization, screened into a fraction of grain size 5-10mm., is introduced through the rotary valve 6 from the hopper 7 into the fluidized bed-carbonization furnace 5 packed with the heat medium such as sand, having a grain size of 2-3mm., where the coal 8 and the heat medium 4 are heated to 600- 650 deg.C by a heating gas obtained from the combustion of the fuel oil 1 with the combustion air 2 in the combustion chamber 3 and at the same time they are fluidized at a superficial velocity (in column) of 3.5-4.5m/s. Thus, the coal 8 gives out its volatile components to become a highly reactive and homogeneous semi-coke and taken out of the discharge valve 9 in the form of the mixture 10 with the heat medium 4. Then, the semi-coke is separated from the heat medium 4 and the latter 4 is recycled for reuse.

68. 发明专利

JPS5645735A DRY TYPE DESULFURIZATION PROCESS 失效
公开(公告)号：JPS5645735A
公开(公告)日：1981-04-25
申请号：JP12144079
申请日：1979-09-20
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , KAKO HIROYUKI , TAKAHASHI YUKIO
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , C01B17/04
摘要： PURPOSE:To effect a highly efficient recovery of sulfurous acid gas as a simple substance of sulfur by a method wherein gas containing sulfurous acid gas is added with about an equivalent of the gas containing hydrogen sulfide and subject to a low temperature Claus reaction. CONSTITUTION:A waste gas from boilers, etc. which contains sulfurous acid gas is added with hydrogen sulfide from a hydrogen sulfide generator 4 so that a molar ratio of 1:2 or a little higher is obtained for sulfurous gas to hydrogen sulfide in the gas. The mixed gas is then sent to the Claus furnace 8, where a low-temperature Claus reaction occurs and simple substance of sulfur is deposited on catalyst. Then, the sulfur-deposited catalyst is heated to recover the simple sulfur substance. In this manner, simple sulfur substance is efficiently recovered.

69. 发明专利

JPS5628688A TREATMENT OF INCINERATION DUST GENERATED FROM PULP MILL WASTE LIQUOR 失效
公开(公告)号：JPS5628688A
公开(公告)日：1981-03-20
申请号：JP10426879
申请日：1979-08-16
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , TAKAHASHI YUKIO , KUWABARA TAKANORI
IPC分类号： B09B3/00
摘要： PURPOSE:To efficiently hydrolyze the chlorides included in the dust, by heating the incineration dust generated from the pulp mill waste liquor under the coexistence of the boiler exhaust gas and the inert medium. CONSTITUTION:The exhaust gas from the waste heat boilder's main body 1 is introduced into the electrical dust collector 3 to separate the accompanying dust, and the collected dust 4 is introduced into the reactor 6. The fuel 5 and the boiler exhaust gas from the bypass line 2A are supplied to the reactor 6 to which the teturn inert medium 14 from the regenerator 12 is additionally supplied; hereby, the reactor inside is kept at the specified temperature condition. The moisture content of the exhaust gas to be supplied is about 15-20% which present a steam partial pressure suitable for promoting the hydrolysis reaction of the chloride is discharged out of the reactor 6; and the dust 8 freed from chlorides is sent to the dust separator 9 in which the dust is separated from the inert medium. This inert medium 11 is subjected to the regeneration treatment by the regenerator 12 and is again returned to the reactor 6.

70. 发明专利

JPS55111884A TREATMENT OF COMBUSTION DUST OF PULP WASTE LIQUOR 失效
公开(公告)号：JPS55111884A
公开(公告)日：1980-08-28
申请号：JP2030279
申请日：1979-02-22
申请人： BABCOCK HITACHI KK
发明人： FUJII MASANORI , TAKAHASHI YUKIO
IPC分类号： F23G7/04 , B09B3/00 , D21C11/06
摘要： PURPOSE:To separate chloride effectively by a method wherein chloride containing dust exhasted from an incinerating procedure is heated by boiler combustion gas and formed hydrogen chloride is contacted and reacted with a calcium type adsorbing liquid. CONSTITUTION:A gas generated from a kraft pulp waste liquor exhasted from a recovery boiler is introduced into an electric dust collector 3 to collect dust and a portion of this collected dust is supplied to a mixing tand 4 as well as the remainder of the dust is supplied to a reating apparatus 6. Moreover, the combustion gas exhausted from a recovery boiler 1 is introduced into the reating apparatus 6 from a line 7. The Na2SO4 containing dust formed within this reacting apparatus 6 is returned to a tank 4 to recover chemicals and heat, while on the other hand, HCl generated within a reating apparatus 6 is introduced into an absorbing tower 10 and reacted with a calcium type absorbing liquor 11 and taken out of a system as CaCl2. The gas exhausted from an electric dust collector 3 and the gas exhausted from an absorbing tower 10 are discharged through a line 13 and a line 14 respectively.

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