WO2019237695A1 - 水泥窑协同处置生活垃圾发电系统及方法 - Google Patents
水泥窑协同处置生活垃圾发电系统及方法 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
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- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
Claims (9)
- 一种水泥窑协同处置生活垃圾发电系统,包括垃圾接收与贮存系统、焚烧系统、渗滤液处理系统、臭气处理系统、余热锅炉系统、汽轮发电系统以及烟气净化系统,其中,所述接收与贮存系统包括卸料大厅(1)、垃圾储存坑(3)和进料装置(6),其中,所述垃圾储存坑(3)与所述卸料大厅(1)连通;垃圾储存坑(3)上方设有垃圾行车(5)及与所述垃圾行车(5)连接的抓斗(4),所述垃圾行车(5)设置为通过所述抓斗(4)将所述垃圾储存坑(3)内的垃圾送至所述进料装置(6),所述进料装置(6)与所述焚烧系统相连;所述焚烧系统包括蒸汽-空气预热器(8)和与所述蒸汽-空气预热器(8)连接的炉排炉(7),所述余热锅炉系统包括余热锅炉(10),所述余热锅炉(10)和所述炉排炉(7)连接;所述渗滤液处理系统包括垃圾渗滤液池(2)和与所述垃圾渗滤液池(2)连接的渗沥液处理站,所述垃圾渗滤液池(2)与所述垃圾储存坑(3)相连;所述臭气处理系统与所述垃圾储存坑(3)相连;所述汽轮发电系统与所述余热锅炉(10)相连,所述余热锅炉(10)设置为与篦冷机相连;所述烟气净化系统设置为与所述篦冷机相连。
- 如权利要求1所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述炉排炉(7)采用顺推式炉排或逆推式炉排。
- 如权利要求1或2或所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述臭气处理系统包括洗涤塔以及活性炭吸附除臭装置。
- 如权利要求1-3任一项所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述余热锅炉(10)为卧式锅炉,所述余热锅炉(10)的蒸汽参数选用蒸汽压力4.0兆帕,蒸汽温度400摄氏度。
- 如权利要求1-4任一项所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述汽轮发电系统包括:汽轮机和主蒸汽旁路系统,所述汽轮机和所述主蒸汽旁路系统均与所述余热锅炉连接。
- 如权利要求1-5任一项所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述蒸汽-空气预热器(8)为两级预热蒸汽-空气预热器,所述蒸汽-空气预热器(8)与所述余热锅炉(10)以及所述汽轮发电系统相连,设置为将第一级蒸汽、第二级蒸汽和空气进行逆流换热,其中,所述第一级蒸汽来自所述汽轮发电系统抽汽,所述第二级蒸汽来自所述余热锅炉(10)的汽包,所述空气来自垃圾储存坑(3)产生的恶臭气体。
- 如权利要求1-6任一项所述的一种水泥窑协同处置生活垃圾发电系统,其中,所述余热锅炉(10)采用依次连接的三个垂直通道以及一个水平通道的结构布置方式,所述三个垂直通道均为空腔冷却通道,并在所述水平通道内布置有依次连接的蒸发器、过热器和省煤器。
- 一种水泥窑协同处置生活垃圾发电系统的发电方法,包括:将垃圾储存坑(3)中的垃圾通过抓斗(4)送至进料装置(6);通过炉排炉(7)对所述进料装置(6)中的垃圾进行干燥、气化和焚烧,并将在所述炉排炉(7)内焚烧垃圾产生的高温烟气经过余热锅炉(10)产生过热蒸汽驱动汽轮发电系统发电;将所述余热锅炉(10)的出口的烟气送入篦冷机以使所述烟气与水泥熟料换热后作为三次风送入分解炉,利用所述分解炉内的高温碱性条件,吸收和处理垃圾焚烧产生的有害气体,使有毒有机物彻底分解,且还可使所述烟气替代分解炉的部分燃料;其中,所述炉排炉(7)的燃烧空气来源于所述垃圾储存坑(3)产生的恶臭气体,含有所述恶臭气体的空气经过蒸汽-空气预热器(8)预热后作为一次风送入炉排炉(7);将垃圾在炉排炉(7)内燃烧后的炉渣经出渣机(9)输送到水泥原料系统参与配料以及粉磨成生料粉,再经过回转窑系统煅烧成水泥熟料,以使重金属有害元素被固溶在熟料里;将从垃圾储存坑(3)收集到的垃圾渗滤液送入垃圾渗滤液池(2),经渗沥液处理站处理后合格的产水进入电站的循环水池,作为循环水系统的补水,浓水喷入垃圾炉排炉(7)或者水泥窑窑尾预热器进行高温焚烧,以达到无害化处理的目的。当水泥窑正常运行时,含有臭气的空气从垃圾存储坑(3)上部的吸风口吸出,将吸出的空气作为冷却助燃空气并通过蒸汽-空气预热器(8)对吸出的空气进行加热,另外为了保证垃圾存储坑(3)的臭气不外溢,引一路空气至篦冷机,利用篦冷机高温熟料热解;当在水泥窑停窑检修时,恶臭气体通过垃圾存储坑(3)的上部的风管和风口排出,送入臭气处理系统处理,达到国家恶臭排放标准后由排风机排放到大气中。
- 如权利要求8所述的一种水泥窑协同处置生活垃圾的方法,还包括:在炉排炉(7)内的垃圾热值低于1000千卡/千克的情况下,采用补烧柴油的方式保证炉排炉(7)内能稳定着火和燃烧。
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CN108679614A (zh) * | 2018-06-14 | 2018-10-19 | 南京凯盛开能环保能源有限公司 | 一种水泥窑协同处置生活垃圾发电系统及方法 |
CN109185895A (zh) * | 2018-11-02 | 2019-01-11 | 重庆富燃科技股份有限公司 | 一种处理填埋场陈腐垃圾的系统及方法 |
CN110260334A (zh) * | 2019-06-21 | 2019-09-20 | 无锡市华星电力环保工程有限公司 | 垃圾焚烧及烟气净化处理系统 |
CN111550758A (zh) * | 2020-04-17 | 2020-08-18 | 江联重工集团股份有限公司 | 一种大容量高参数垃圾焚烧余热锅炉 |
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