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41. 发明专利

PL294330A1 未知
公开(公告)号：PL294330A1
公开(公告)日：1993-02-08
申请号：PL29433092
申请日：1992-04-24
申请人： BABCOCK HITACHI KK
发明人： KIKKAWA HIROFUMI , NISHIMURA YASUYUKI , KAKU HIROYUKI , YOKOYAMA KOOICHI , NOSAKA HIROYUKI , NAKAJIMA FUMITO , TAKAMOTO SHIGEHITO , KURUMAJI TAKAHARU , HASHIMOTO TAIKI , ISHIZAKA HIROSHI , NISHIMURA TSUKASA , NOSAKA TADASHI
IPC分类号： B01D53/50 , B01D53/34 , B01D53/80 , B01D53/81

42. 发明专利

FI913103A0 未知
公开(公告)号：FI913103A0
公开(公告)日：1991-06-25
申请号：FI913103
申请日：1991-06-25
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , KANDA OSAMU , NOZAWA SHIGERU , MIZOGUCHI TADAAKI
IPC分类号： B01D20060101 , B01D53/34 , B01D

43. 发明专利

NO850656A 未知
公开(公告)号：NO850656A
公开(公告)日：1985-08-21
申请号：NO850656
申请日：1985-02-19
申请人： BABCOCK HITACHI KK
发明人： KURODA HIROSHI , NISHIMURA TSUKASA , KANDA OSAMU , NOZAWA SHIGERU , MIZGOUCHI TADAAIKI
IPC分类号： B01D53/34 , B01D53/50 , B01D53/77 , C01F11/46 , B01D
CPC分类号： B01D53/501

44. 发明专利

JPS5851923A DRY DESULFURIZATION OF WASTE GAS 失效
公开(公告)号：JPS5851923A
公开(公告)日：1983-03-26
申请号：JP14957181
申请日：1981-09-24
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , HISHINUMA TAKAO , NISHIMURA TSUKASA
IPC分类号： B01D53/50 , B01D53/08 , B01D53/34 , B01D53/81 , C01B17/02 , C01B17/04
摘要： PURPOSE:To carry out the regeneration of a desulfurizing agent by heat desorption without deteriorating capacities thereof, by supplying steam to the heat desorbing and regenerating tower of a dry waste gas desulfurization apparatus to desorb a gas from the desulfurizing agent. CONSTITUTION:Steam 12 is supplied in the vicinity of the boundary part between the heating part 7 and the cooling part 9 of a dry waste gas desulfurization apparatus and raised to the side of the heating part while uniformly dispersed by a dispersing plate 13 having an L shaped cross area. By this mechanism, the desorbed gas desorbed from a desulfurizing agent 3 can be prevented from being diffused to the side of the cooling part 9 and can be prevented to be again readsorbed by the desulfurizing agent 3. As the result, the SO2 adsorbed desulfurizing agent is regenerated by heat desorption without generating the combustion of the desulfurizing agent and deteriorating the capacities of the regenerated desulfurizing agent.

45. 发明专利

JPS58139741A DESORPTION AND REGENERATION METHOD BY HEATING 失效
公开(公告)号：JPS58139741A
公开(公告)日：1983-08-19
申请号：JP2108782
申请日：1982-02-15
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , OOTSUKA KEIZOU , HISHINUMA TAKAO , NISHIMURA TSUKASA
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01J20/34
摘要： PURPOSE:To detect and prevent ignition and runaway by detecting the operating pressure PH of gases on a heating medium side and the operating pressure PA of gases on an adsorbent side and regulating the operating pressure of the gases after desorption and the operating pressure of the circulating gases in the outlet of a heater in such a way that the PA is kept always higher than the PH. CONSTITUTION:The operating pressure PH on a heating medium side is detected by a pressure detecting end 120 from streams 107, 108, 109, 110 of high temp. gases or from an optional position in the heating part, and further the operating pressure on an adsorbent side is detected with a detecting end 121. The set value of PA>PH is detected with a differential pressure transmitting signal 122 and respective control valves 123, 127 are operated by streams 124, 125 according to the detected signal. A desorbing gas 129 passes through the valve 123 then through a stream 130 and is fed from a stream 132 to the next stage by a suction blower 131. A desorbing gas 132 is fed to stages for recovering S, etc. since said gas contains SO2 in a high concn.

46. 发明专利

JPS5864117A DRY STACK-GAS DESULFURIZATION PROCESS 失效
公开(公告)号：JPS5864117A
公开(公告)日：1983-04-16
申请号：JP16101481
申请日：1981-10-12
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： NAGASAKI NOBUO , NOGUCHI YOSHIKI , NISHIMURA TSUKASA , MORI TOSHIKATSU
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01D53/86 , C01B17/02 , C01B17/04
摘要： PURPOSE:To reduce the consumption of fuel for heating in a sulfur recovery process, by a method wherein the sensible heat of the outlet gas from an oxidation vessel is recovered and the recovered heat is used as a heat source to suppress the rise of the gas temp. at the inlet of an adsorbing tower and to prevent the lowering of the adsorbing capacity of said adsorbing tower. CONSTITUTION:The waste gas of a boiler is sent to an adsorbing tower 7 through a denitration apparatus 3, an air preheater 4 and an electric dust collector 5 and subjected to the adsorptive removal of SOX therein by an adsorbent using coal as a stock material, and the waste gas is discharged as a purified gas 8. The adsorbent 9 having SOX adsorbed thereby is regenerated by a desorbing tower 10 to be returned to the adsorbing tower 7. The desorbed SO2 gas is flowed through a reducing tower 12, a condenser 13, a heater 14, a Claus reactor 15 and a condenser 16 to be recovered as sulfur 17 by the condensers 13, 16. The residual gas containing unreacted SO2, CO and H2 is oxidized catalytically in an oxidation vessel 18 and the high temp. gas 19 subjected to oxidation treatment is introduced into a waste heat recovery boiler 20 to recover the heat and sent to the upstream side of the adsorbing tower 7 while the temp. thereof is lowered. Supplied water 21 subjected to heat exchange in the waste heat recovery boiler 20 is converted to steam 22 and this steam is utilized as the heat source of the heater 14.

47. 发明专利

JPS58227A DRY TYPE EXHAUST GAS DESULFURIZING METHOD 失效
公开(公告)号：JPS58227A
公开(公告)日：1983-01-05
申请号：JP9827481
申请日：1981-06-26
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , HISHINUMA TAKAO , NAKAJIMA FUMITO , SEKI MICHIHARU , NISHIMURA TSUKASA
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , C01B17/02 , C01B17/04
摘要： PURPOSE:To obtain easily an adsorber having high mechanical strength and packing density, by classifying carbonized coals by the difference of specific gravity and using carbonized coals having a heavy specific gravity as an adsorber and using carbonized coals having a light specific gravity as a reducing agent. CONSTITUTION: Fuel coals 1 are crushed and classified by a crusher 109 and a classifier 110 and are fed partially to a carbonization furnace 111. Carbonized coals 24 are classified by a specific gravity difference classifier 112 to which sea water or the like is charged, and carbonized coals having a light specific gravity which are floated up are dried by a drier 113 and are fed to a reducing tower 104 and are used as a reducing agent 14. Precipitated carbonized coals having a heavy specific gravity are dried and activated by a drying furnace 114 and an activating furnace 115 and are fed as an adsorber 12 to an adsorbing tower 101. Thus, since the adsorber 12 classified by the specific gravity difference has no expanded grains and has high hardness and packing density, the adsorber and the reducing agent suitable for a use are selected from fuel coals easily.

48. 发明专利

JPS5824341A REGENERATING METHOD BY DESORPTION UNDER HEATING 失效
公开(公告)号：JPS5824341A
公开(公告)日：1983-02-14
申请号：JP12191881
申请日：1981-08-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , HISHINUMA TAKAO , NISHIMURA TSUKASA
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01J20/34
摘要： PURPOSE:To efficiently perform a regeneration by desorption under heating and to reduce a supplying quantity of inert gas, by providing a narrowed part to a boundary between a heating zone and a cooling zone in a regenerating tower for desorption by heating, as well as providing a suction blower for sucking inert gas and a gas after desorption. CONSTITUTION:Desulfurizing agent 1, after adsorbing oxides of sulfur, is supplied to a hopper 2, flowing down in a heating zone 5 through a valve 4 and is regenerated by desorption under heating. The agent 1 is further flowed down in a cooling zone 6 to be cooled and is taken out by the flow controlling of a valve 7 located at the lower part of a tower. Hereupon inert gas 10 is supplied from the lower part of a narrowed part 15 provided to a boundary between a heating part and a cooling part, but the inert gas 10 is prevented from diffusing into the cooling zone 6 because its flow rate increases when it flows upward through a partitioning part of the agent 1 of the part 15. Further, as a suction blower 12 sucks a gas after desorbing and the inert gas, both of the same quantity, and always keeps the internal pressure of the tower close to the atomospheric pressure, the regeneration by desorption under heating is smoothly performed.

49. 发明专利

JPH03271613A DESULFURIZING PROCESS FOR INSIDE OF BOILER FURNACE AND FLUE 失效
公开(公告)号：JPH03271613A
公开(公告)日：1991-12-03
申请号：JP6845890
申请日：1990-03-20
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , AZUHATA SHIGERU , MIYADERA HIROSHI , SAITO KAZUICHI , NARATO KIYOSHI , NISHIMURA TSUKASA
IPC分类号： F23J7/00 , B01D53/50 , B01D53/81 , F23C99/00 , F23J15/00
摘要： PURPOSE:To improve the efficiency of desulfurization, by a method wherein limestone is temporary burned and is turned into burnt line by chemical reaction, and the burnt lime is sprayed in a boiler furnace. CONSTITUTION:Desulfurizing agents 7 are supplied to a grinder 8, and desulfurizing agents 9 pulverized are burned by a temporary kiln 10, and after that, they are led to a classifier 12 by conveying fluid 14. When desulfurizing agents 13 smaller than a definite size are sprayed into a boiler 1, limestone is turned into burnt lime and a desulfurizing reaction is caused by the burnt lime. CaO unreacted is led to a flue 22 by a flow 15, together with both coal ash and combustion exhaust gas, and flue desulfurization is caused. While the CaO accompanied absorbs water in the combustion exhaust gas, the desulfurizing reaction is caused. Furthermore, a part of solid materials collected by an electric dust-collector 19 is supplied to the classifier 12 through the grinder 8, and the classification of the desulfurizing agents is heightened and a compound such as the CaO unreacted or Ca(OH)2 is used again.

50. 发明专利

JPS58153523A DRY TYPE STACK GAS DESULFURIZATION AND DENITRATION METHOD 失效
公开(公告)号：JPS58153523A
公开(公告)日：1983-09-12
申请号：JP3389982
申请日：1982-03-05
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOMURO TAKEO , ARASHI NORIO , OOTSUKA KEIZOU , HISHINUMA TAKAO , NISHIMURA TSUKASA
IPC分类号： B01D53/50 , B01D53/34 , B01D53/60 , B01D53/74 , B01D53/81 , B01J20/20
摘要： PURPOSE:To reduce an amt. of NH3 to be used, and to execute desulfurization and denitration treatment at low cost, by removing SOx in a stack gas contg. SOx and NOx in advance by adsorption, and reducing NOx to N2 by addition of a specified amt. of NH3. CONSTITUTION:A combustion waste gas 4 exhausted from a boiler 100 is supplied through a dust collector 101 to an adsorber 102 to remove most of SOx using activated carbon 21 as an adsorbing agent, obtd. by treating coal in a low temp. dry distillation apparatus 110 at low temp., oxidizing, dry distilling, and activating it with water vapor. The waste gas 6 cleared of most of SOx is partly sent to a detector 105 to detect a residual SOx concn. A' and a NOx concn. B, and gaseous NH3 9 amounting to (2A'+B) molar equiv. is mixed with the gas 6 and the mixture is fed to an adsorber similar to the adsorber 102. The residual SOx is converted into acidic ammonium sulfate or ammonium sulfate, NOx is reduced to N2, thus removing the pollutants. Since the activated carbon adsorbing agent in the adsorber 103 has contained ammonium sulfate, etc., it is fed to a heat desorption regenerator 104 to heat desorb the ammonium sulfate, etc., and regenerate it as an adsorbing agent.

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