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公开(公告)号：US5034028A
公开(公告)日：1991-07-23
申请号：US445399
申请日：1989-12-04
申请人： Naohiko Ukawa , Susumu Okino , Taku Shimizu , Kouichiro Iwashita
发明人： Naohiko Ukawa , Susumu Okino , Taku Shimizu , Kouichiro Iwashita
CPC分类号： B01D53/68 , B01D53/501
摘要： A method of treating an exhaust gas containing SO.sub.2 and HF which is characterized by using an absorbing liquid containing CaCO.sub.3 and Ca(OH).sub.2 as absorbents to be fed to an absorption tower for the exhaust gas, circulating the absorbing liquid from a second slurry tank to the absorption tower, from the absorption tower to a first slurry tank, and from the first flurry tank to the second slurry tank, introducing Ca(OH).sub.2 into the second slurry tank to keep the pH value of the absorbing liquid in the second slurry tank in the range of 5.5-7.0, and blowing air into the absorbing liquid in the first slurry tank.
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公开(公告)号：US6029100A
公开(公告)日：2000-02-22
申请号：US798859
申请日：1997-02-11
CPC分类号： B01D53/501 , B01D53/346 , Y10S423/05
摘要： There is provided a method for flue gas desulfurization which is capable of conducting minute control of oxidation and which is capable of maintaining the concentration of sulfurous acid in an absorbent liquid within a proper range in a highly reliable and efficient manner, even in the case where an abrupt change occurs in the operational conditions of the system. In the method for controlling the oxidation in flue gas desulfurization, the value of proportional sensitivity K in the feed back control process, which is based primarily on the oxidation-reduction potential, is increased depending on the deviation .epsilon. in a region where the detected oxidation reduction potential value PN is below the target oxidation reduction potential value SN in correspondence with the characteristic change of the oxidation-reduction potential against the concentration of sulfurous acid.
摘要翻译： 本发明提供了一种烟气脱硫方法，其能够进行微小的氧化控制，并且能够以高可靠性和高效率的方式将吸收液中的亚硫酸浓度保持在适当的范围内，即使在 在系统的操作条件下发生突然变化。 在用于控制烟道气脱硫中的氧化的方法中，主要基于氧化还原电位的反馈控制过程中的比例灵敏度K的值根据检测到的氧化的区域中的偏差ε增加 还原电位值PN与氧化还原电位相对于亚硫酸浓度的特性变化相对应，低于目标氧化还原电位值SN。
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公开(公告)号：US4533531A
公开(公告)日：1985-08-06
申请号：US606137
申请日：1984-05-02
申请人： Naoharu Shinoda , Atsushi Tatani , Naohiko Ukawa , Susumu Okino
发明人： Naoharu Shinoda , Atsushi Tatani , Naohiko Ukawa , Susumu Okino
CPC分类号： B01D53/501
摘要： An exhaust fume desulfurization process is disclosed which comprises the steps of contacting an off-gas containing SO.sub.2 with a slurry containing calcium and manganese compounds, introducing a gas containing oxygen into the slurry, detecting the amount of the absorption of oxygen by the slurry, and regulating the amount of manganese present in the slurry based upon the amount of oxygen absorbed by the slurry. The desulfurization rate is correspondingly adjusted and the desulfurized gas product is recovered.
摘要翻译： 公开了一种排气烟气脱硫方法，其包括使含有SO 2的废气与含有钙和锰化合物的浆料接触，将含氧气体引入浆料中，检测浆料中氧吸收量的步骤，以及 基于浆料吸收的氧的量来调节浆料中存在的锰的量。 相应调整脱硫率，回收脱硫气产品。
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24.发明授权Flue gas desulfurizer, boiler equipment and thermal electric power generation equipment 失效烟气脱硫装置，锅炉设备及热力发电设备
公开(公告)号：US5878675A
公开(公告)日：1999-03-09
申请号：US696317
申请日：1996-08-12
申请人： Masaki Iijima , Atsushi Tatani , Kazuaki Kimura , Koichiro Iwashita , Satoshi Yajima , Toru Takashina , Susumu Okino
发明人： Masaki Iijima , Atsushi Tatani , Kazuaki Kimura , Koichiro Iwashita , Satoshi Yajima , Toru Takashina , Susumu Okino
CPC分类号： B01D53/504
摘要： A flue gas desulfurizer having an absorption tower for bringing untreated flue gas into gas-liquid contact with an absorbent slurry, wherein there is provided heat recovery means for recovering heat from the flue gas passing through the flue gas inlet section of the absorption tower prior to gas-liquid contact, and to boiler equipment including heat release means for releasing the recovered heat to heat utilization equipment. This invention also relates to thermal electric power generation equipment including extraction feedwater heaters for heating boiler feedwater with steam from steam turbines, a flue gas desulfurizer using an absorbent slurry, and means for recovering heat from the flue gas passing through the flue gas desulfurizer and/or the absorbent slurry within the flue gas desulfurizer, whereby boiler feedwater is preheated by the recovered heat and then introduced into the extraction feedwater heaters.
摘要翻译： 一种烟道气脱硫器，具有吸收塔，用于将未处理的烟道气与吸收剂浆料气液接触，其中设置有热回收装置，用于在通过吸收塔的烟道气入口部分的烟道气之前回收热量， 气液接触，以及包括用于将回收的热量释放到热利用设备的放热装置的锅炉设备。 本发明还涉及包括用于使用来自蒸汽轮机的蒸汽加热锅炉给水的提取给水加热器，使用吸收剂浆料的烟道气脱硫器和用于从通过烟道气脱硫器的烟道气回收热量的装置的热发电设备和/ 或烟道气脱硫器内的吸收剂浆料，由此锅炉给水由回收的热量预热，然后引入提取给水加热器。
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公开(公告)号：US5840263A
公开(公告)日：1998-11-24
申请号：US848838
申请日：1997-05-05
申请人： Takeo Shinoda , Tamotsu Higuchi , Shinichiro Kotake , Kiyoshi Okazoe , Tatsuto Nagayasu , Koichiro Iwashita , Kenichiro Kawamichi , Susumu Okino , Toru Takashina
发明人： Takeo Shinoda , Tamotsu Higuchi , Shinichiro Kotake , Kiyoshi Okazoe , Tatsuto Nagayasu , Koichiro Iwashita , Kenichiro Kawamichi , Susumu Okino , Toru Takashina
CPC分类号： B01D53/504
摘要： A flue gas treating system for removing sulfur dioxide and dust present in flue gas by gas-liquid contact with an absorbing fluid and has an inlet side absorption tower of the liquid column type and an outlet side absorption tower of the liquid column type, each of which has a uniform cross-section over the area of gas-liquid contact, and the cross-section of flue gas in the inlet side absorption tower is smaller than the cross section of flue gas in the outlet side absorption tower. The inlet side absorption tower is constructed in the form of a parallel-flow absorption tower wherein the flue gas flows downward for favorable collection of dust and absorption of sulfur dioxide. The outlet side absorption tower is constructed in the form of a counter-flow adsorption tower wherein the flue gas flows upward for favorable absorption of sulfur dioxide. The absorbing fluid within a tank is injected upward from a plurality of spray pipes.
摘要翻译： 一种烟气处理系统，用于通过与吸收液体的气液接触来除去烟道气中存在的二氧化硫和粉尘，并具有液柱型的入口侧吸收塔和液柱型的出口侧吸收塔， 在气液接触区域上具有均匀的横截面，入口侧吸收塔中烟道的横截面小于出口侧吸收塔中烟道气的横截面。 入口侧吸收塔以平行流式吸收塔的形式构成，其中烟道气向下流动，有利于收集灰尘和吸收二氧化硫。 出口侧吸收塔以逆流吸附塔的形式构成，其中烟道气向上流动以吸收二氧化硫。 罐内的吸收液体从多个喷射管向上注入。
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公开(公告)号：US4696805A
公开(公告)日：1987-09-29
申请号：US821600
申请日：1986-01-23
CPC分类号： B01D53/501 , B01D53/68
摘要： Here are disclosed a method for desulfurizing an exhaust gas which is characterized by comprising a gas absorbing section in which an absorbing solution absorbs SO.sub.2 in the exhaust gas in order to become an acid solution containing a sulfite; an oxidizing section in which the sulfite is oxidized; a neutralizing section in which the absorbing solution is neutralized by adding an SO.sub.2 absorbent; and a closed circulating circuit for delivering the solution drawn out from the gas absorbing section to the oxidizing section, delivering the solution drawn out from the oxidizing section to the neutralizing section, and delivering the solution drawn out from the neutralizing section to the gas absorbing section; and a method for simultaneously treating SO.sub.2 and HCl which the abovementioned exhaust gas contains.
摘要翻译： 这里公开了一种废气脱硫方法，其特征在于包括：吸收溶液吸收废气中的SO 2以吸收含有亚硫酸盐的酸溶液的气体吸收部; 氧化部分，其中亚硫酸盐被氧化; 中和部，其中通过添加SO 2吸收剂中和吸收溶液; 以及封闭循环回路，用于将从气体吸收部抽出的溶液输送到氧化部，将从氧化部排出的溶液输送到中和部，将从中和部抽出的溶液输送到气体吸收部 ; 以及同时处理上述排气所含的SO 2和HCl的方法。
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公开(公告)号：US4696804A
公开(公告)日：1987-09-29
申请号：US821608
申请日：1986-01-23
CPC分类号： B01D53/501
摘要： Here is disclosed a method for treating SO.sub.2, SO.sub.3 and a dust simultaneously which comprises causing an exhaust gas containing at least SO.sub.2, SO.sub.3 and the dust to pass through a dry dust collector in order to remove most of the dust therefrom, delivering the exhaust gas to a gas absorbing device, and using at least one of calcium hydroxide and calcium carbonate as an absorbent in the gas absorbing device to remove SO.sub.2 and the dust, which has passed through the dry dust collector, in the exhaust gas therefrom, the method being characterized by comprising the steps of blowing air into an absorbing solution fed to the gas absorbing device in order to oxidize the absorbing solution and to thereby form a gypsum therein; separating a part of the absorbing solution into a slurry mainly containing the gypsum grains and a slurry mainly containing the dust; obtaining the by-product gypsum from the slurry mainly containing the gypsum grains; adding an alkali to the slurry mainly containing the dust; spraying this slurry into the exhaust gas on the upstream side of the dry dust collector; carrying out the collection, drying and solidification of SO.sub.3 ; and collecting the resultant solid together with the dust by the dry dust collector.
摘要翻译： 这里公开了一种同时处理SO 2，SO 3和粉尘的方法，其包括使含有至少SO 2，SO 3和废气的废气通过干式集尘器以除去其中的大部分灰尘，从而将废气 在气体吸收装置中使用氢氧化钙和碳酸钙中的至少一种作为吸收剂，除去已经通过干式集尘器的SO 2和来自其的废气中的灰尘，该方法为 其特征在于包括以下步骤：将空气吹送到供给气体吸收装置的吸收溶液中，以便氧化吸收溶液，从而在其中形成石膏; 将一部分吸收溶液分离成主要含有石膏颗粒的浆料和主要含有灰尘的浆料; 从主要含有石膏颗粒的浆料中获得副产物石膏; 向主要含有灰尘的浆料中加入碱; 将该浆料喷射到干式除尘器上游侧的废气中; 进行SO3的收集，干燥和固化; 并通过干式集尘器将所得固体与灰尘一起收集。
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公开(公告)号：US4677077A
公开(公告)日：1987-06-30
申请号：US638574
申请日：1984-08-07
申请人： Masakazu Onizuka , Susumu Kono , Susumu Okino
发明人： Masakazu Onizuka , Susumu Kono , Susumu Okino
CPC分类号： B01D53/501 , G01N31/00 , Y10T436/115831 , Y10T436/117497 , Y10T436/12 , Y10T436/204998 , Y10T436/235 , Y10T436/25125 , Y10T436/25625 , Y10T436/25875
摘要： A method for continuously measuring the concentration of CaCO.sub.3 in slurries comprising CaCO.sub.3 is described. The method comprises continuously sampling a given amount of the slurry, feeding the sampled slurry into an agitated continuous reactor container which is isolated from the outside air, keeping the slurry in the reactor container at a temperature of at least 50.degree. C., adding sulfuric acid or hydrochloric acid to adjust the pH to below 4, blowing air into the slurry in the reactor container, withdrawing from the reactor container CO.sub.2, produced by the reaction between CaCO.sub.3 and the acid, by entrainment with the air, and calculating the concentration of CaCO.sub.3 in the slurry from the concentration of CO.sub.2 in the withdrawn gas, the amount of the sampled slurry and the flow rate of the blown air.
摘要翻译： 描述了用于连续测量包含CaCO 3的浆料中CaCO 3浓度的方法。 该方法包括连续取样给定量的浆料，将采样的浆料送入搅拌的连续反应器容器中，该容器与外部空气隔离，将反应器容器中的浆料保持在至少50℃的温度，加入硫酸 酸或盐酸以将pH调节至4以下，将空气吹入反应器容器中的浆料中，通过夹带空气从CaCO 3和酸之间的反应产生的反应容器CO 2中排出，并计算浓度 从抽出的气体中的CO 2浓度的浆料中的CaCO 3，取样浆料的量和吹入空气的流量。
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公开(公告)号：US5053061A
公开(公告)日：1991-10-01
申请号：US435692
申请日：1989-11-13
申请人： Atsushi Tatani , Susumu Okino , Masakazu Onizuka
发明人： Atsushi Tatani , Susumu Okino , Masakazu Onizuka
CPC分类号： B01D53/504 , B01D53/18 , B01D53/501
摘要： A gas-liquid contacting method which using a gas-liquid contacting facility comprised with a tower having a reservoir for a gas absorbing liquid at the bottom part and a space for the flow of a gas to be treated in the upper part, a header pipe installed in the tower, a pump for feeding the gas absorbing liquid to the header pipe from the reservoir of the gas absorbing liquid, a throat pipe attached to the header pipe, a discharge pipe with cross-sectional area greater than the cross-sectional area of the throat pipe, and a diffuser pipe that connects the throat pipe and the discharge pipe, whereby the gas absorbing liquid boils under low pressure, by making the cross-sectional area of the throat pipe to be sufficiently smaller than the cross-sectional area of the discharge pipe, then squirting the gas absorbing liquid into the gas to be treated from the discharge pipe.
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公开(公告)号：US4675167A
公开(公告)日：1987-06-23
申请号：US587188
申请日：1984-03-07
CPC分类号： B01D53/34 , B01D53/501 , B01D53/68
摘要： In treating exhaust gases containing SO.sub.2, HCl and HF, there is disclosed a method of treating such exhaust gas which comprises detecting the amounts of HCl and HF in the exhaust gas and supplying an amount of a magnesium compound commensurate with a stoichiometric amount to become at least MgCl.sub.2 and MgF.sub.2 in an exhaust-gas treating tower and a calcium compound as a SO.sub.2 solvent into the exhaust-gas treating tower.The aforesaid method of treating an exhaust gas comprises a method of causing Mn ion to coexist in an absorbing solution in contact with the exhaust gas.
摘要翻译： 在处理含有SO 2，HCl和HF的废气时，公开了一种处理这种废气的方法，该方法包括检测排气中的HCl和HF的量，并将一定量的化学计量的镁化合物供给到 废气处理塔中的MgCl 2和MgF 2最少，作为SO 2溶剂的钙化合物进入废气处理塔。 上述处理废气的方法包括使Mn离子在与废气接触的吸收溶液中共存的方法。
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