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1. 发明专利

JPS5637036A TREATMENT OF NITROGEN OXIDES IN EXHAUST GAS 失效
公开(公告)号：JPS5637036A
公开(公告)日：1981-04-10
申请号：JP11342879
申请日：1979-09-03
申请人： KAWASAKI HEAVY IND LTD , DENGEN KAIHATSU KK
发明人： KUBO YUKIO , ITOU HAYAMIZU , NAKABAYASHI KIYOUSHI , SHIMIZU TATSUJIROU , MOURI KUNIHIKO
IPC分类号： B01D53/94 , B01D53/86 , B01J23/90 , B01J38/06
摘要： PURPOSE:To carry out the exhaust gas desulfurizing treatment efficiently by blowing a specific amount of water vapor or water into the exhaust gas of an upstream side of a catalitic reactor of a denitrating apparatus as well as maintaining the temp. of the catalitic reactor in a specific range. CONSTITUTION:In a general operating condition at reaction temp. of 300-450 deg.C, 5-60vol%, pref., 10-50vol% of water vapor against the total treating exhaust gas is added to the exhaust gas to be treated through a water vapor supply pipe 13 to form a high humidity atmosphere temporally. Moreover, the temp. of a catalitic reactor 2 is maintained at 300-450 deg.C, more pref., 350-400 deg.C and a poisoning component contained in a catalyst is decomposed and released to regenerate said catalyst. The temp. of the catalitic reactor 2 is regulated by controlling a damper 12 of a bypass 11. In substitute of the water vapor supply pipe 13, a water injecting pipe 15 is provided and said high humidity atmosphere can be formed by adding water.

2. 发明专利

JPS56161823A REMOVAL OF AMMONIUM COMPOUND FROM COAL ASH 失效
公开(公告)号：JPS56161823A
公开(公告)日：1981-12-12
申请号：JP6313580
申请日：1980-05-13
申请人： KAWASAKI HEAVY IND LTD , DENGEN KAIHATSU KK
发明人： ITOU HAYAMIZU , NAGAI CHIAKI , MOURI KUNIHIKO , SHIRAKATA TADASHI
IPC分类号： B01D53/94 , B09B3/00 , C01C1/02 , F23J15/00
摘要： PURPOSE:To contrive to save energy as well as to carry out stable coal burning waste gas treatment by a method wherein an NH3 compound in a coal ash is thermally decomposed by a high temp. combustion gas in the system and a decomposed gas is reutilized as an NH3 source of a denitrification apparatus. CONSTITUTION:A waste gas of a coal burning boiler 1 is treated by a system consisted of a denitrification apparatus 2, an air preheating apparatus 3, a low temp. dust collecting apparatus 4 and a desulfurization apparatus 6. In this case, a coal ash containing the NH3 compound discharged from the dust collecting apparatus is thrown into a thermal decomposition furnace 13 through an ash hopper 12 and said NH3 compound is thermally decomposed at a temp. of 250-700 deg.C by a high temp. combustion gas of the boiler 1. Then, the coal ash after the thermal decomposition and the decomposed gas are separated in a solid-gas separator 15 and the decomposed gas is returned to a position in front of the denitrification apparatus 2 to be reutilized as an NH3 source. On the other hand, the coal ash is cooled by air in a cooler 18 and, thereafter, transported to an ash treating installation 21. Further, air heated to about 200-500 deg.C after heat exchanged with the high temp. coal ash in the cooler 18 is blown into a coal ash transport pipe 11 of an upstream side of the furnace 13 and used as a source for transporting the NH3 containing coal ash.

3. 发明专利

JPS5637037A REMOVING METHOD OF AMMONIUM COMPOUND FROM COAL ASH 失效
公开(公告)号：JPS5637037A
公开(公告)日：1981-04-10
申请号：JP11343079
申请日：1979-09-03
申请人： KAWASAKI HEAVY IND LTD , DENGEN KAIHATSU KK
发明人： ITOU HAYAMIZU , NAGAI CHIAKI , NAKABAYASHI KIYOUSHI , IGARASHI KIHACHIROU , MOURI KUNIHIKO , IKEDA TAKASHI
IPC分类号： B01D53/94 , B01D49/00 , B01D53/86 , B09B3/00 , C01C1/02 , F23J15/00
摘要： PURPOSE:To remove and recover the ammonium compound efficiently as well as economically by decomposing by heating the coal ash containing the ammonium compound caught by a dust collector at a specific temp. in a decomposition furnace utilizing a combustion waste gas. CONSTITUTION:In treating an exhaust gas from a coal combusting boiler 1 in a system comprising a high dust type denitration-air preheating-low temp. dust collection-desulfurization, the coal ash containing the ammonium compound caught by the dust collector is pneumatically transported and thrown into the decomposition furnace 11 of the ammonium compound. As a heat source of the heat decomposition furnace 11, a high temp. combustion exhaust gas of a coal combusting furnace, for example, the high temp. combustion exhaust gas in front of a coal economizer is introduced and the heat decomposition of the ammonium compound is carried out at 350-700 deg.C. The coal ash and the decomposition gas after heat decomposition are subjected to the solid-gas separation in a solid-gas separator 13 and the cecomposition gas is returned to the front of the denitrating apparatus 2 and utilized again as an NH3 source. The coal ash is transported to an ash treating installation 17 after cooled.

4. 发明专利

JPS56161822A REMOVAL OF AMMONIUM COMPOUND FROM COAL ASH 失效
公开(公告)号：JPS56161822A
公开(公告)日：1981-12-12
申请号：JP6313480
申请日：1980-05-13
申请人： KAWASAKI HEAVY IND LTD , DENGEN KAIHATSU KK
发明人： ITOU HAYAMIZU , NAGAI CHIAKI , MOURI KUNIHIKO , SHIRAKATA TADASHI
IPC分类号： B01D53/94 , B09B3/00 , C01C1/02 , F23J15/00
摘要： PURPOSE:To unnecessitate a large thermal decomposition furnace of an NH3 compound and to thermally decompose the NH3 compound efficiently by thermally decomposing the NH3 compound in a coal ash while said coal ash is transported through an ash treating pipe. CONSTITUTION:A waste gas of a coal burning boiler 1 is treated by a system consisted of a denitrification apparatus 2, an air preheater 3, a low temp. dust collector 4 and a desulfurization apparatus 6. In this case, the coal ash collected in the dust collector 4 containing the NH3 compound (e.g. ammonium sulfate) discharged from the dust collector 4 is thrown into the ash treating pipe 12 as well as a high temp. combustion waste gas of the boiler 1 is introduced into the pipe 12 and said ash and gas are subjected to solid-gas contact to thermally decompose the NH3 compound in the coal ash. In this case, the temp. in said pipe is 250-700 deg.C. Subsequently, the coal ash after thermal decomposition and the decomposed gas are separated in a solid-gas separator 13 and the decomposed gas is returned to a position in front of the denitrification apparatus 2 to be reutilized as a NH3 source. On the other hand, the coal ash is cooled in a cooler and, thereafter, transported to an ash treating installation 20.

5. 发明专利

JPS5637053A REGENERATING TREATMENT OF DENITRIFICATING CATALYST 失效
公开(公告)号：JPS5637053A
公开(公告)日：1981-04-10
申请号：JP11342979
申请日：1979-09-03
申请人： KAWASAKI HEAVY IND LTD , DENGEN KAIHATSU KK
发明人： KUBO YUKIO , ITOU HAYAMIZU , NAKABAYASHI KIYOUSHI , SHIMIZU TATSUJIROU , MOURI KUNIHIKO
IPC分类号： B01D53/94 , B01D53/86 , B01J37/06 , B01J38/48
摘要： PURPOSE:To regenerate a catalyst efficiently as well as economically by a method wherein the filling of a catalyst is carried out under a condition while a catalyst is filled and NH3 generated by adding an alkali to a water washing treating liquid is reused as a reducing agent of denitrificating reaction. PURPOSE:A catalyst is washed by water by spraying water directly to a catalyst through a water injecting pipe 12 from an upper portion of a catalyst reactor 2 to remove a poisoning component (SO4 , NH4 or soots) and said catalyst is regenerated. The water washing treatment after water washing is stored once in a water washing tank 14 and the portion thereof is recirculated and reused to wash a catalyst through a recirculating pump 15 and the residual portion after water washing treatment is sent into an exhaust water treating tank 17. In the exhaust water treating tank 17, an alkali is added to carry out the pH adjustment and said exhaust water is neutralized. Then, the NH3 generated in this time is collected in an NH3 tank 11 through an NH3 removing pipe 20 and, after introduction, is reused as a reducing agent.

6. 发明专利

DE3032927A1 未知
公开(公告)号：DE3032927A1
公开(公告)日：1981-03-26
申请号：DE3032927
申请日：1980-09-02
申请人： ELECTRIC POWER DEV CO , KAWASAKI HEAVY IND LTD
发明人： ITO HAYAMI , NAGAI CHIAKI , NAKABAYASHI YASUYUKI , IGARASHI KIHACHIRO , MOURI KUNIHIKO , IKEDA TAKASHI
IPC分类号： B01D53/94 , B01D49/00 , B01D53/86 , B09B3/00 , C01C1/02 , F23J15/00 , B01D53/36 , B01D46/30 , B01D46/02
摘要： When exhaust gas from a coal-burning boiler containing NOx as well as SOx is subjected to NOx removal by catalytic reduction of the NOx with ammonia and the coal ashes contained in the gas are separated, the coal ashes are contaminated by a certain quantity of ammonium compounds produced from the SOx and the ammonia excessively used. The ammonium compounds in the coal ashes are decomposed into ammonia and a sulfur compound by heating by the hot gas at a temperature in the restricted range, viz. 350 DEG to 700 DEG C., thereby to release ammonia into the gas preferentially to the sulfur compound. The ammonia thus released is recycled to the NOx removal step.

7. 发明专利

JPS58143828A APPARATUS FOR PREVENTING CATALYST FROM CLOGGING IN DENITRATION REACTOR 失效
公开(公告)号：JPS58143828A
公开(公告)日：1983-08-26
申请号：JP2508782
申请日：1982-02-18
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , DENGEN KAIHATSU KK
发明人： MOURI KUNIHIKO , OGIWARA TOSHIAKI , ISHIKAWA TSUNEFUMI
IPC分类号： B01D53/94 , B01J8/00 , B01J8/02 , B01J19/24
摘要： PURPOSE:To provide an apparatus for preventing the clogging of a gas flow passage of a catalyst, constituted by providing protectors for preventing the adhesion of dust to respective gas flow upstream side between mutual cases of catalyst units parallelly arranged in a denitration reactor and between the case and the inner wall of the reactor. CONSTITUTION:To the gas flow upstream sides of mutually adjacent cases 3, 3 of catalyst units 2 parallelly arranged in a denitration reactor 1, conical shape protectors 9 for preventing the adhesion of dust are mounted while, to the gas flow upstream side of rails 5 for mounting the catalyst units 2, conical shape protectors 10 for preventing the adhesion of dust are mounted. In addition, between the inner wall of the reactor 1 and the case 3 of the unit adjacent said inner wall, a conical protector 11 for preventing the adhesion of dust is also provided. By the above mentioned constitution, because the accumulation of dust contained in a gas flowing through the reactor 1 is prevented by the aforementioned protectors 9, 10, 11, the accumulation amount thereof is reduced to a large extent and the clogging of the gas flow passage of the catalyst is inhibited.

8. 发明专利

JPS5474534A METHOD FOR NITROGEN OXIDES REMOVAL 失效
公开(公告)号：JPS5474534A
公开(公告)日：1979-06-14
申请号：JP14242177
申请日：1977-11-26
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , DENGEN KAIHATSU KK
发明人： FURUKAWA MICHIYOSHI , MOURI KUNIHIKO , KOIKE HITOSHI , ISHIKAWA TSUNEFUMI
IPC分类号： B01D53/94 , B01D53/34 , F23J15/00
摘要： PURPOSE:To prevent the clogging of a gas preheater and to reduce the wear of nitrogen oxides removal catalyst by having the dust collected in a pretreatment dust collector by-pass a dry type nitrogen oxides removal system and fed directly a gas preheater. CONSTITUTION:A dust by-pass passage 5 is installed connecting a pretreatment dust collector 2 and the upstream of a gas preheater 4 whereby the heavy concentration of dust in an exhaust gas generated in a coal burning boiler 1 is collected in the pretreatment dust collector 2 and directly fed into the gas preheater 4 while the exhaust gas free of the dust is removed of nitrogen oxides in a dry type nitrogen oxides removal system 3, dusted collected again in a post treatment dust collector 6, desulfurized in a desulfurizer 7 as needed, and released into an atomosphere, the sand blasting effect of the dust fed into the gas preheater removing acid ammonium sulfate adhering to the gas and eliminating a dust flow in the dry type nitrogen oxides removal system to prevent the wear of the catalyst therein.

9. 发明专利

JPS57153116A DISPOSAL OF EXHAUST GAS 失效
公开(公告)号：JPS57153116A
公开(公告)日：1982-09-21
申请号：JP3865881
申请日：1981-03-19
申请人： DENGEN KAIHATSU KK , GADELIUS KK
发明人： SHIMIZU TATSUJIROU , MOURI KUNIHIKO , TOKUSHIMA IKUO , TAKAHASHI KUNIHIRO
IPC分类号： B01D53/50 , B01D53/77 , F23J15/00
摘要： PURPOSE:To increase the dust removing efficiency of exhaust gas, by collecting dust by a dry method from the exhaust gas containing sulfur oxide, after passing through a gas-gas heat exchanger for the second time to highten the temperature, which is wet-desulfurized already, after passing through the above-mentioned gas-gas heat exchanger for one time. CONSTITUTION:The exhaust gas from a boiler 1 is introduced into a wet desulfurization unit 6, passing through a gas-gas heat exchanger 4 and a fan 5, after heat-recovered by an air preheater 2, and dust-collected by an electric dust collector 3. In this unit 6, desulfurization and dust collection are performed at the same time by a scrubber method, and then, the gas is discharged from a flue 7 into the open air by the intermediary of a dry dust collector 8, after it is heated by a heat exchanger 4. As mentioned above, by providing a dust collector 8, the dust still remaining and not yet desulfurized in a heat exchanger 4 can be collected.

10. 发明专利

JPS5753225A Treatment of coal ash 失效
标题翻译：煤炭治理
公开(公告)号：JPS5753225A
公开(公告)日：1982-03-30
申请号：JP12880480
申请日：1980-09-17
申请人： Electric Power Dev Co Ltd , Kawasaki Heavy Ind Ltd
发明人： SHIRAKATA TADASHI , MOURI KUNIHIKO , ITOU HAYAMIZU , NAGAI CHIAKI
IPC分类号： F23J15/00 , B01D53/94 , B09B3/00 , F23J1/00
摘要： PURPOSE: To effectively utilize coal ash by classifying said coal ash collected from an exhaust gas of a coal boiler in a dust collecting apparatus into a fine powder containing an ammonium compound and a crude powder containing black coal ash.
CONSTITUTION: An exhaust gas of a coal boiler 1 is successively passed through a denitration apparatus 2, an air preheater 3, a dust collecting apparatus 4, a heat exchanger 5 and a desulfurization apparatus 6 to be treated. coal ash from which dust is removed in the dust collecting apparatus 4 is thrown into a classifier 11 to be classified into a fine powder containing an ammonium compound and a crude powder containing black ash. The ammonium compound is decomposed at 300W 500°C in an ammonium compound pyrolysis furnace 12 and the decomposed gas containing ammonia is separated in a solid-gas separator 14 to be reutilized in the ditration apparatus 2 as well as the separated coal ash is utilized in fly ash or the like. The crude powder is baked and decolorized at 500W1,100°C in a decoloring furnace 16 and transported to an ash treating installation through an ash coloer 17 to be effectively utilized.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过将从灰尘收集装置中的煤锅炉废气中收集的煤灰分为含有铵化合物的细粉和含有黑煤灰的粗粉，有效地利用煤灰。构成：煤锅炉1的废气依次通过待处理的脱硝装置2，空气预热器3，集尘装置4，热交换器5和脱硫装置6。将在灰尘收集装置4中除去灰尘的煤灰投入分级器11中，分类为含有铵化合物的细粉末和含有黑灰的粗粉末。铵化合物在铵化合物热解炉12中在300-500℃下分解，含有氨的分解气体在固气分离器14中分离，以在脱水装置2中再利用，分离的煤灰为用于飞灰等。粗粉末在脱色炉16中在500-1100℃下被烘烤和脱色，并通过灰分颜料17输送到灰处理装置，以有效地利用。

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