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21. 发明专利

JPS52106362A DECOMPOSITION OF NITROGEN OXIDES BY CATALYTIC REDUCTION 失效
公开(公告)号：JPS52106362A
公开(公告)日：1977-09-06
申请号：JP2364276
申请日：1976-03-04
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HISHINUMA TAKAO , ARASHI NORIO , AKIMOTO HIDETOSHI , KAJI RIYUUICHI , OOTSUKA KIYOTAKA , NAKAJIMA SHITO , TOSHIBE HIROSHI
IPC分类号： B01D53/94 , B01D53/34 , B01D53/86 , B01J8/02 , C01B21/02 , F23J15/00
摘要： PURPOSE:To prevent the decrease in activity of catlayst in reduction of SOx, NOx contained simultaneously in a flue gas with addition of NH3 by means of thermal decomposition of ammonia compounds and sulfuric acid formed on the surface of catalyst.

22. 发明专利

JPS526368A PROCESS FOR REDUCING NITROGEN OXIDES IN EXHAUST COMBUSTION GASES 失效
公开(公告)号：JPS526368A
公开(公告)日：1977-01-18
申请号：JP8297275
申请日：1975-07-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HISHINUMA TAKAO , AKIMOTO HIDETOSHI , ARIKAWA KIJIROU , NARITA TSUNEO
IPC分类号： B01D53/56 , F23J15/00
摘要： PURPOSE:NO contained in exhaust combustiongases is made to react in a gas phase by the contact with a reducing substance in a high temperature region thereby being decomposed to N2 and H2O.

23. 发明专利

JPS58168692A PREPARATION OF HIGH-CONCENTRATION AQUEOUS COAL SLURRY 失效
公开(公告)号：JPS58168692A
公开(公告)日：1983-10-05
申请号：JP5133582
申请日：1982-03-31
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： AKIMOTO HIDETOSHI , KAJI RIYUUICHI , MURANAKA TADASHI , OOTSUKA KEIZOU , HISHINUMA TAKAO , HASHIMOTO MICHIO
IPC分类号： B65G53/30 , C10L1/32 , C10L5/00
摘要： PURPOSE:To economically obtain high-conc. aq. coal slurry of low water content suitable for transportation and combustion, by compounding crushed coal obtd. by dense media separation or from coal sludge with a minute particle recovered from waste water of coal dressing in a specified proportion. CONSTITUTION:Coal obtd. by dressing at a coal dressing plant is crushed into a particle size smaller than a desired top size. The top size is defined depending on the purpose of use of the ultimately obtd. high-conc. slurry. In the case of direct combustion of the slurry in a boiler, a particle size distribution now applied to a pulverized coal boiler, i.e., at least 70-80% of 75mum or smaller particle being contained with a top size of about 200-400mum, is pref. A minute particle recovered from waste water of a coal dressing plant and contg. coal, is supplied to and mixed with the coal separated and crushed in the presence of water in such a proportion that coal particles constituting the ultimately obtd. high-concn. slurry contains 5-30% of 5mum or smaller particles. Additionally, an additive for thickening, such as a surfactant, is added to the resulting slurry to obtain the purpose high-conc. slurry.

24. 发明专利

JPS57145186A PREPARATION OF PULVERIZED COAL-WATER SLURRY FOR DEASHING 失效
公开(公告)号：JPS57145186A
公开(公告)日：1982-09-08
申请号：JP2988081
申请日：1981-03-04
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MURANAKA TADASHI , AKIMOTO HIDETOSHI , KAJI RIYUUICHI , KOMURO TAKEO , KIKUCHI HIDEO , HISHINUMA TAKAO , NAKASHIMA FUMITO
IPC分类号： C10L1/32 , B03B1/00 , C10L5/00 , C10L9/00
摘要： PURPOSE:To obtain a pulverized coal slurry capable of being deashed at a high deashing rate and at a high recovery rate, by varying the time of agitation of the pulverized coal with water depending on the type of the coal and conc. of the slurry. CONSTITUTION:In preparing a slurry from a pulverized coal of ash content >=10% and water, 20wt% or less, based on the slurry, coal is used and agitated for a period of time varying 10-30min depending on the ash content of the coal and conc. of the slurry. Deashing rate has been hitherto low because a hydrophilic ash isolated by the pulverization of the coal is not sufficiently dispersed in the water phase because the max. agitation time is about 5min independently of the conc. of the slurry or the type of the coal. It is possible to improve such defect and to effect deashing at a high deashing rate and at a high recovery rate.

25. 发明专利

JPS57145184A COAL DEASHING 失效
公开(公告)号：JPS57145184A
公开(公告)日：1982-09-08
申请号：JP2987881
申请日：1981-03-04
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： MURANAKA TADASHI , AKIMOTO HIDETOSHI , KAJI RIYUUICHI , KOMURO TAKEO , KIKUCHI HIDEO , HISHINUMA TAKAO , NAKASHIMA FUMITO
IPC分类号： C10L9/00 , C10L5/00
摘要： PURPOSE:To accomplish coal deashing at a low cost and at a high deashing rate, by fluidizing a pulverized coal in a fluidized layer, agglomerating only ash by spraying an aq. alkali soln., and separating a coal component from the ash based on the difference in specific gravity. CONSTITUTION:A coal is pulverized and the obtd. pulverized coal is supplied to fluidized layer body 1. Fluidizing gas 4 is supplied via flow distributor 3 provided on the bottom of the body 1 into the fluidized layer by blower 2, and compressed air 5 and aq. alkali soln. 6 are atomized through spray means 7. Thus the ash isolated from the pulverized coal is agglomerated by the action of the aq. alkali soln. 6 and the agglomerated ash moves to the fluidized layer bottom because of its larger specific gravity than an upwardly acting force due to the fluidizing gas 4. The deashed pulverized coal floats up to the top portion of the fluidized layer because of low specific gravity, so that it is possible to easily separate the agglomerated ash from the deashed pulverized coal.

26. 发明专利

JPS57130558A METHOD OF CRUSHING COAL 失效
公开(公告)号：JPS57130558A
公开(公告)日：1982-08-13
申请号：JP1424381
申请日：1981-02-04
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KAJI RIYUUICHI , KOMURO TAKEO , AKIMOTO HIDETOSHI , MURANAKA TADASHI , KIKUCHI HIDEO , HISHINUMA TAKAO , NAKASHIMA FUMITO
IPC分类号： C10L5/00 , B02C19/18

27. 发明专利

JPS57128792A REMOVAL OF ASH FROM COAL 失效
公开(公告)号：JPS57128792A
公开(公告)日：1982-08-10
申请号：JP1424681
申请日：1981-02-04
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KAJI RIYUUICHI , KOMURO TAKEO , AKIMOTO HIDETOSHI , MURANAKA TADASHI , HISHINUMA TAKAO , KIKUCHI HIDEO , NAKASHIMA FUMITO
IPC分类号： C10L9/00 , C10L5/00
摘要： PURPOSE:To separate a carbonaceous material from ash continuously and efficiently and to obtain a high-quality coal, by letting a slurry of finely pulverized coal/water and an oil flow as a double layer flow of thin layer into a duct, transferring the carbonaceous material from the contact interface of oil-slurry into the oil layer. CONSTITUTION:A slurry of finely pulverized coal and water and an oil are sent from the tanks 1 and 2 to the separator 5 consisting of a a flat duct, where the slurry is made into a thin layer and let to flow in the outlet direction, the oil is spread as a thin layer over the slurry, and the carbonaceous material is attached to an oil film selectively at the contact interface of slurry and oil, to form a film of the carbonaceous material. The slurry and the oil are then sent to the separating tank 6 and separated into the oil, the carbonaceous material and the slurry of ash/water, and the oil is recovered and circulated through the tank 2.

28. 发明专利

JPS57115492A DEASHING METHOD OF COAL 失效
公开(公告)号：JPS57115492A
公开(公告)日：1982-07-17
申请号：JP42481
申请日：1981-01-07
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , KAJI RIYUUICHI , MURANAKA TADASHI , KIKUCHI HIDEO , HISHINUMA TAKAO , AKIMOTO HIDETOSHI , KAKO HIROYUKI
IPC分类号： C10L9/00 , B03D1/02 , C10L5/00
摘要： PURPOSE:To reduce the amount of an oil to be used and deash coal more efficiently and economically, by making the coal in an aqueous slurry adhere to gas bubbles accompanying the oil in the slurry, and concentrating the coal. CONSTITUTION:A finely pulverized coal after a pulverizer 1 is mixed with water in a tank 2 with stirring to form an aqueous slurry, which is then fed to a separating column 3. On the other hand, a gas, e.g. air, a combustible gas or inert gas, is fed from a flow 111 to a gas-liquid contact column 5 to accompany the gas with the oil partially and fed to the separating column 3. The coal content in the slurry is made to adhere to gas while rising the column 3 as fine gas bubbles, and the gas bubbles are fed from the upper flow 106, decanted in a decanter 4, pressurized by a pump 6 and then circulated through the column 5. The ash content and the slurry material are then taken out of the bottom of the column 3, and the ash is then concentrated in s settling tank, taken out of a flow 115 to circulate the resultant supernatant liquid through a flow 114 to the tank 2.

29. 发明专利

JPS5730548A Preparation of desulfurizing agent 失效
标题翻译：脱硫剂的制备
公开(公告)号：JPS5730548A
公开(公告)日：1982-02-18
申请号：JP10500780
申请日：1980-08-01
申请人： Babcock Hitachi Kk , Hitachi Ltd
发明人： KOMURO TAKEO , GOMI KENICHI , FUJII MASAYA , HISHINUMA TAKAO , ARASHI NORIO , AKIMOTO HIDETOSHI , IINUMA HAJIME , NOZAWA SHIGERU
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01J20/20
摘要： PURPOSE: To prepare a desulfurizing agent high in adsorbing performance economically by a method wherein the surfaces of coal are oxidized by combustion gases in a carbonizing step for coal, when preparing the desulfurizing agent used for a dry type exhaust-gas desulfurizer from coal.
CONSTITUTION: When preparing the desulfurizing agent used in a dry type desulfurizing process for removing sulfur oxides in combustion exhaust gases by the carbonization and activation of coal, a part of combustion gases is contacted to coal before or after the carbonizing step so as to oxidize the surfaces of the coal or the carbonized coal, followed by activation. By such a treatment, oxides are formed on the surfaces of the coal or the carbonized coal, whereby the succeeding activation reaction is facilitated and development of pores is accelerated. Accordingly, a desulfurizing agent having high adsorbing performance can be prepared at low cost.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过煤炭的碳化步骤中的煤的表面被燃烧气体氧化的方法经济地制备吸附性能高的脱硫剂，当从煤中制备用于干式排气脱硫剂的脱硫剂时。构成：在制备用于通过碳化和活化煤去除燃烧废气中的硫氧化物的干式脱硫方法中使用的脱硫剂时，一部分燃烧气体在碳化步骤之前或之后与煤接触以氧化煤或碳化煤的表面，然后激活。通过这样的处理，在煤或碳化煤的表面上形成氧化物，从而促进后续的活化反应，并且促进了孔的发展。因此，可以低成本制备吸附性能好的脱硫剂。

30. 发明专利

JPS5730547A Preparation of desulfurizing agent 失效
标题翻译：脱硫剂的制备
公开(公告)号：JPS5730547A
公开(公告)日：1982-02-18
申请号：JP10500580
申请日：1980-08-01
申请人： Babcock Hitachi Kk , Hitachi Ltd
发明人： KOMURO TAKEO , GOMI KENICHI , FUJII MASAYA , HISHINUMA TAKAO , ARASHI NORIO , AKIMOTO HIDETOSHI , IINUMA HAJIME , NOZAWA SHIGERU
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01J20/20
摘要： PURPOSE: To obtain an adsorbing agent which is not degraded in SO
2 -adsorbing ability when subjected to repeated adsorption and desorption, by regulating the initial SO
2 -adsorbing power when preparing a desulfurizing agent used for a dry type exhaust-gas desulfurizer from coal.
CONSTITUTION: When preparing the desulfurizer used in a dry type desulfurizing method for the adsorption removal of sulfur oxides in combustion exhaust gases by dry distillation and activation of coal, the process of dry distillation and activation is so controlled that the initial SO
2 -adsorbing power of the desulfurizing agent will be not higher than 16g.SO
2 /100g.desulfurizing agnet. The thus prepared desulfurizing agent shows no degradation of SO
2 -adsorbing ability when subjected to repeated adsorption and desorption, therefore it can be used for a long period of time, while being provided with high mechanical strength.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了获得当经过重复吸附和解吸时SO2吸附能力不降低的吸附剂，通过在从煤中制备用于干式排气脱硫剂的脱硫剂时调节初始SO 2吸附功率。构成：在干式脱硫方法中制备用于通过干馏和活化煤吸附去除燃烧废气中的硫氧化物的脱硫剂时，干馏和活化的过程受到如此控制，使得初始的SO 2吸附功率脱硫剂不得高于16g.SO2 / 100g脱硫剂。如此制备的脱硫剂在经受反复吸附和解吸时不会降低SO 2吸附能力，因此可以长时间使用，同时提供高机械强度。

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