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公开(公告)号：US09446984B2
公开(公告)日：2016-09-20
申请号：US14074750
申请日：2013-11-08
CPC分类号： C04B7/367 , B01D2257/504 , C04B7/44 , F27B7/2041 , F27D17/008 , Y02P40/18
摘要： To provide a method and facility for enabling CO2 gas generated in a cement manufacturing facility to be separated and recovered at a high concentration. To this end, according to the present invention, the calcination of a cement material and the recovery of CO2 gas generated in a calciner are performed by one of the following steps of: [1] superheating the cement material before calcination to at least the calcination temperature thereof in a superheating furnace and then mixing the superheated cement material with a new cement material before calcination in a mixer/calciner; [2] mixing, in the mixer/calciner, the cement material before calcination with a part of high-temperature cement clinker discharged from a cement kiln; and [3] using an externally heated calciner.
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公开(公告)号：US10131576B2
公开(公告)日：2018-11-20
申请号：US14916465
申请日：2014-06-30
发明人： Takuya Komatsu , Yoshinori Takayama
摘要： There is provided a method for operating a cement plant capable of simultaneously optimizing both combustion in a calciner and a heat consumption rate. The method for operating a cement plant includes: feeding first fuel to a calciner; feeding second fuel for maintaining the inside at a burning temperature to a cement kiln along with combustion primary air, and introducing air for cooling cement clinker to a cooler; and feeding a part of the air as secondary air to the cement kiln, feeding as tertiary air to the calciner, and discharging the rest of the air from the cooler, wherein relation between a first oxygen concentration at an exhaust gas outlet of the calciner and a heat consumption rate determined by the first fuel and the second fuel, and relation between a second oxygen concentration at an exhaust gas outlet of the preheater and the heat consumption rate are beforehand obtained, and amounts of the secondary air and the tertiary air are adjusted such that both the first oxygen concentration and the second oxygen concentration fall within a range including values of the oxygen concentrations at which the heat consumption rate becomes at its minimum.
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公开(公告)号：US09616401B2
公开(公告)日：2017-04-11
申请号：US14382939
申请日：2013-03-13
CPC分类号： B01F15/06 , B01F15/04 , B01F2015/062 , B01F2215/0047 , C04B7/43 , F27B7/20 , F27B7/2041 , Y02P40/121
摘要： A cement production apparatus having: a duct 21 in which exhaust gas drained from a lower cyclone flows upward, distributes and introduces the exhaust gas to upper cyclones; material-supplying pipes 22 for supplying cement raw material connected to both side parts of one side surface of the duct 21 below a distribution part 23 among the upper cyclones; and a supply-amount controller 26 provided on an upstream position above the material-supplying pipes 22 for controlling supply-amounts of the cement raw material to the material-supplying pipes 22: and when H is a vertical distance between a horizontal surface P1 passing through centers of distribution outlets 21a of the upper cyclones and a horizontal surface P2 passing through centers of connecting ports 22a of the material-supplying pipes 22, and D is a diameter of the duct 21, a ratio H/D is set to 1.4 to 2.5.
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公开(公告)号：US20150274590A1
公开(公告)日：2015-10-01
申请号：US14417276
申请日：2013-08-09
IPC分类号： C04B7/44
CPC分类号： C04B7/4469 , C04B7/432 , F27B7/2016 , F27B7/2025 , F27B7/3205 , F27D13/00
摘要： Providing a cement production apparatus in which raw material is supplied into a duct with being dispersed uniformly so that heat-exchanging efficiency is improved by even preheating and clogging and the like are prevented, so that stable operation can be carried out.Between cyclones at an upper stage and a cyclone at a lower stage disposed below cyclones at an upper stage, a duct 21 is provided to introduce exhaust gas to the cyclones at the upper stage with distributing after flowing upward from the cyclone at the lower stage; at a lower position than a distribution part 23 of the duct 21, a material-supplying pipe 22 is connected for supplying cement raw material; at a connected part of the material-supplying pipe 22 to the duct 21, a material-guiding chute 24 on which the cement raw material is supplied from the material-supplying pipe 22 and which drops it into the duct 21 is provided with protruding into the duct 21; and the material-guiding chute 24 is formed to have a flat upper surface and to be expandable by sliding so that insertion depth of a tip end 24a from an inner-wall surface 21b of the duct 21 is 0.15 to 0.5 times of an inner diameter of the duct 21.
摘要翻译： 提供一种水泥生产设备，其中将原料供给到均匀分散的管道中，从而通过均匀预热和堵塞等来改善热交换效率，从而可以进行稳定的操作。 在上段的旋风分离器和位于上段的旋风分离器之下的下阶段的旋风分离器之间设置有管道21，用于在上层的旋风分离器中引入排气，在下阶段从旋风分离器向上流动之后分配; 在比管道21的分配部分23更低的位置处，连接供料管22以供应水泥原料; 在材料供给管22与管道21的连接部分上，从材料供给管22供给水泥原料并将其落入管道21的材料导向槽24设置成突出到 管道21; 并且材料导向槽24形成为具有平坦的上表面并且可通过滑动而膨胀，使得末端24a从管道21的内壁表面21b的插入深度为内径的0.15至0.5倍 的管道21。
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5.发明申请METHODS AND SYSTEMS FOR RECOVERY OF CO2 GAS IN CEMENT-MANUFACTURING FACILITIES, AND PROCESSES FOR MANUFACTURING CEMENT 审中-公开水泥制造设备中二氧化碳回收的方法和系统以及制造水泥的工艺公开(公告)号：US20150183685A1
公开(公告)日：2015-07-02
申请号：US14659686
申请日：2015-03-17
CPC分类号： C04B7/00 , B01D53/00 , B01J19/24 , B01J2219/24 , C04B7/365 , F27D17/001 , F27D17/002 , Y02C10/04 , Y02P40/18
摘要： An object of the present invention is to separate CO2 gas generated in a cement-manufacturing facility in a high concentration and recover the CO2 gas. The present invention includes: feeding a cement material before calcination and a heat medium which has a particle diameter larger than that of the cement material and has been heated to the calcination temperature or higher in a medium-heating furnace (14), to a mixing calciner (12); and recovering the CO2 gas generated by the calcination of the cement material. The heat medium circulates between the medium-heating furnace and the mixing calciner. Another aspect of the present invention includes: feeding a cement material before calcination to a regenerative calciner (112) which has been heated to the calcination temperature or higher and has stored heat therein; and recovering the CO2 gas generated by the calcination of the cement material.
摘要翻译： 本发明的一个目的是以高浓度分离在水泥制造设备中产生的CO 2气体并回收CO 2气体。 本发明包括：煅烧前的水泥料和在中等加热炉（14）中加热到煅烧温度以上的热介质，该热介质的粒径大于水泥材料的粒径， 煅烧炉（12）; 并回收通过煅烧水泥材料产生的二氧化碳气体。 热介质在中加热炉和混合煅烧炉之间循环。 本发明的另一方面包括：将煅烧前的水泥材料供给已经被加热到煅烧温度以上并在其中储存热量的再生煅烧炉（112）; 并回收通过煅烧水泥材料产生的二氧化碳气体。
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6.发明公开公开(公告)号：US20230227354A1
公开(公告)日：2023-07-20
申请号：US17928699
申请日：2021-05-28
CPC分类号： C04B7/367 , C04B7/4407 , C07C1/12
摘要： Generating methane by adding hydrogen to CO2 in exhaust gas discharged a from cement production facility or CO2 that is separated and recovered from the exhaust gas, and using the methane as an alternative fuel to fossil fuel such as coal, petroleum, natural gas and the like, by methanation of CO2 in the exhaust gas from the cement production facility that includes exhaust gas originated from lime stone not from the fossil oil and effectively utilizing it, it is possible to reduce usage of the fossil fuel, suppress CO2 originated from energy, and improve an effect of reducing greenhouse gas.
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7.发明授权公开(公告)号：US09714196B2
公开(公告)日：2017-07-25
申请号：US15294113
申请日：2016-10-14
发明人： Yoshinori Takayama , Hirokazu Shima
CPC分类号： C04B2/108 , C04B7/364 , C04B7/4407 , F23B1/00 , F23C1/00 , F23J2215/10 , F23J2219/20 , F23K1/00 , F23K2201/501 , F23N1/002 , F23N5/003 , F23N2021/10
摘要： A method for controlling an NOx concentration in an exhaust gas in a combustion facility by: measuring a reaction velocity ki of each of a plurality of chars, each corresponding to a plurality of types of pulverized coals; determining a relationship between the NOx concentration in the exhaust gas and the reaction velocity ki for each of the chars; (iii) blending the plurality of the types of the pulverized coal, wherein a blending ratio of the plurality of the types of the pulverized coal is determined by using, as an index, a reaction velocity kblend of the char of the blended pulverized coal, which corresponds to a target NOx concentration or below, on the basis of the relationship; and supplying the blended pulverized coal to the combustion facility as the fuel of the combustion facility.
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公开(公告)号：US09676664B2
公开(公告)日：2017-06-13
申请号：US14417276
申请日：2013-08-09
CPC分类号： C04B7/4469 , C04B7/432 , F27B7/2016 , F27B7/2025 , F27B7/3205 , F27D13/00
摘要： Providing a cement production apparatus in which raw material is supplied into a duct with being dispersed uniformly so that heat-exchanging efficiency is improved by even preheating and clogging and the like are prevented, so that stable operation can be carried out.Between cyclones at an upper stage and a cyclone at a lower stage disposed below cyclones at an upper stage, a duct 21 is provided to introduce exhaust gas to the cyclones at the upper stage with distributing after flowing upward from the cyclone at the lower stage; at a lower position than a distribution part 23 of the duct 21, a material-supplying pipe 22 is connected for supplying cement raw material; at a connected part of the material-supplying pipe 22 to the duct 21, a material-guiding chute 24 on which the cement raw material is supplied from the material-supplying pipe 22 and which drops it into the duct 21 is provided with protruding into the duct 21; and the material-guiding chute 24 is formed to have a flat upper surface and to be expandable by sliding so that insertion depth of a tip end 24a from an inner-wall surface 21b of the duct 21 is 0.15 to 0.5 times of an inner diameter of the duct 21.
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公开(公告)号：US20150049572A1
公开(公告)日：2015-02-19
申请号：US14382939
申请日：2013-03-13
CPC分类号： B01F15/06 , B01F15/04 , B01F2015/062 , B01F2215/0047 , C04B7/43 , F27B7/20 , F27B7/2041 , Y02P40/121
摘要： To provide a cement production apparatus which can pre-heat uniformly material supplied to cyclones above a duct, improve heat-exchanging efficiency, and perform an operation with low pressure loss and small energy consuption.A cement production apparatus having: a duct 21 in which exhaust gas drained from a lower cyclone flows upward, distributes and introduces the exhaust gas to upper cyclones; material-supplying pipes 22 for supplying cement raw material connected to both side parts of one side surface of the duct 21 below a distribution part 23 among the upper cyclones; and a supply-amount controller 26 provided on an upstream position above the material-supplying pipes 22 for controlling supply-amounts of the cement raw material to the material-supplying pipes 22: and when H is a vertical distance between a horizontal surface P1 passing through centers of distribution outlets 21a of the upper cyclones and a horizontal surface P2 passing through centers of connecting ports 22a of the material-supplying pipes 22, and D is a diameter of the duct 21, a ratio H/D is set to 1.4 to 2.5.
摘要翻译： 为了提供能够均匀地预先供给到管道上方的旋风分离器的材料预热的水泥生产装置，提高热交换效率，并进行低压力损失和小能量消耗的操作。 一种水泥生产设备，其具有：从下部旋风分离器排出的废气向上流动的管道21，将废气分配并引入上部旋风分离器; 用于供应连接到上部旋风分离器中的分配部分23下方的管道21的一个侧表面的两个侧面的水泥原料的供料管22; 以及供给量控制器26，其设置在供料管22上方的上游位置，用于控制供料管22的水泥原料供给量; H为水平面P1通过时的垂直距离 通过上旋风分离器的分配出口21a的中心和通过供料管22的连接口22a的中心的水平面P2，D是管道21的直径，比率H / D设定为1.4〜 2.5。
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10.发明公开公开(公告)号：US20230233987A1
公开(公告)日：2023-07-27
申请号：US17928716
申请日：2021-05-28
CPC分类号： B01D53/1475 , B01D53/62 , B01D53/26 , B01D2257/504 , B01D2258/0233
摘要： A CO2 separation/recover method in cement production exhaust gas has a step of harmful component removal that removes an acidic component and a harmful component from exhaust gas discharged from a cement production facility; and a step of CO2 separation and recover that separates and recovers CO2 by bringing the exhaust gas from which the acidic component and the harmful component are removed into contact with a CO2 absorption material, so that the acidic component and the harmful component are removed before separating and recovering CO2, resulting in deterioration of the absorbing ability of the CO2 absorption material being suppressed; and the cement production exhaust gas can be appropriately disposed.
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