CN106621724A - 烟气脱硫白尘一体化装置 - Google Patents
烟气脱硫白尘一体化装置 Download PDFInfo
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- CN106621724A CN106621724A CN201710030817.7A CN201710030817A CN106621724A CN 106621724 A CN106621724 A CN 106621724A CN 201710030817 A CN201710030817 A CN 201710030817A CN 106621724 A CN106621724 A CN 106621724A
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- flue gas
- water
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- spray
- shower
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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- B01D5/0027—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium
- B01D5/003—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium within column(s)
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- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D53/263—Drying gases or vapours by absorption
-
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Abstract
本发明提供一种烟气脱硫白尘一体化装置，包括脱硫塔、与脱硫塔的烟气出口相连通的脱白装置、设置于脱白装置顶部且与其相连通的湿电除尘器，脱白装置包括固定设置于脱硫塔上方的装置壳体、设置于装置壳体内的集水器、设置于集水器上方的喷淋装置，装置壳体上开设有集水口，集水口与集水管相连通，集水管通过集水管道与凉水塔相连通，凉水塔与沉淀池相连通，沉淀池的上部通过喷淋泵连接有喷淋管道，喷淋管道与喷淋装置相连通，沉淀池的底部通过污水泵与脱硫制浆系统相连接，达到烟气脱白的目的，又能将喷淋水单独回收循环使用，还能回收烟气脱下来的水供脱硫制浆系统使用，达到节水目的。
Description
技术领域
[0001] 本发明涉及一种烟气脱硫白尘一体化装置，本工艺装置适用于工业生产中产生的含湿烟气排放时的减白或脱白，特别是适用于钢厂烧结、锅炉发电、垃圾焚烧等采用湿法脱硫工艺的烟气排放时的减白或脱白。
背景技术
[0002] 近些年来，随着国家对节能减排及排放指标的严格要求，各行各业均不断采取措施，研究新技术、开发新工艺、制造新设备，都在积极地安装投入使用。经过几年的努力，一些企业在粉尘、S02、污水等排放指标上均可达到国家排放标准要求，使环境有了很大改观。
[0003] 但随之而来的是，有些企业烟气排放时出现长长的白龙，而且越往北方、越寒冷的地域白龙越长。这些白烟严重破坏了城市景观，影响周边交通可见度等。经调查，在全国范围内:钢铁、电力、化工等行业凡是有含湿烟气排放的区域，特别是钢厂烧结、锅炉发电、垃圾焚烧等采用湿法脱硫工艺的烟气排放时基本都出现这种现象，对大气造成严重的污染现状。
[0004]目前，在烟气脱硫和除尘方面工艺技术比较成熟，实施效果也很好。但大多数都是脱硫塔和湿电除尘分别建设，如果再上烟气脱白装置则需要另外占地建设。这样一来，如果烟气脱硫、除尘和脱白全部实施，则需要建三套装置。不仅占地多、总投资高、生产运行维护费用高，而且在老企业环保设施建设实施方面，还存在总图布置不下的难题。
[0005] 而烟气脱白方面目前尚处在工艺技术研究开发阶段。各有关企业都在积极地想办法，希望尽快解决这个问题。解决这个问题的常规办法是:
一是把烟气从50 °C左右冷却冷却到25°C左右，析出一部分水，降低烟气含湿量，排放时就可减少白或无白。而冷却主要有对烟气制冷和喷水水冷两种方式。
[0006] 二是将烟气从50 °C左右加热到80 °C以上，降低烟气相对湿度，排放时就可减少白或无白。而加热主要有采用高温热源换热器换热方式和采用高温废气直接兑入混合方式。
[0007]由于大工业生产产生的烟气量很大，以上四种方式有的单独建设投资高，有的运行耗能大，有的不仅投资高而且运行耗能还大。这样的方式方法实施后，将大大增加企业的生产运行成本，降低企业效益，企业很难承受。
发明内容
[0008] 本发明的目的在于克服上述技术的不足，从而提供一种烟气脱硫白尘一体化装置，达到烟气脱白的目的，又能将喷淋水单独回收循环使用，还能回收烟气脱下来的水供脱硫制浆系统使用，达到节水目的。
[0009] 本发明所采用的技术方案是这样的:烟气脱硫白尘一体化装置，包括脱硫塔、与所述脱硫塔的烟气出口相连通的脱白装置、设置于所述脱白装置顶部且与其相连通的湿电除尘器，所述脱白装置包括固定设置于所述脱硫塔上方的装置壳体、设置于所述装置壳体内的集水器、设置于所述集水器上方的喷淋装置，所述装置壳体上开设有集水口，所述集水口与集水管相连通，所述集水管通过集水管道与凉水塔相连通，所述凉水塔与沉淀池相连通，所述沉淀池的上部通过喷淋栗连接有喷淋管道，所述喷淋管道与所述喷淋装置相连通，所述沉淀池的底部通过污水栗与脱硫制浆系统相连接。
[0010] 进一步改进的是:所述集水器呈锥形，所述装置壳体的内侧设置有集水槽，所述集水口与所述集水槽相连通。
[0011] 进一步改进的是:所述集水管呈圆环形，所述集水管位于所述装置壳体的外侧。
[0012] 进一步改进的是:所述喷淋装置包括上喷淋管以及下喷淋管，所述上喷淋管以及所述下喷淋管均与所述喷淋管道相连通，所述上喷淋管以及所述下喷淋管上均设置有若干喷嘴。
[0013] 进一步改进的是:所述湿电除尘器的顶部设置有排烟囱。
[0014] 通过采用前述技术方案，本发明的有益效果是:(I)由于三套装置合一，可在一套装置内实现烟气脱硫、脱白和除尘；
(2)占地面积小，尤其在老厂改造中优势更为明显；
(3)总体投资省，生产运行费用相对低；
(4)脱白装置结构简单，易于生产维护；
(5)脱白使用的喷淋水可单独回收循环使用；
(6)回收烟气脱下来的水供脱硫制浆系统用，达到节水目的。
附图说明
[0015]图1为本发明示意图。
[0016] 其中:1、脱硫塔；2、装置壳体;3、集水器;4、集水管；5、凉水塔;6、沉淀池；7、喷淋栗;8、喷淋装置。
具体实施方式
[0017]以下结合附图和具体实施方式来进一步说明本发明。
[0018]如图1所示，本发明公开一种烟气脱硫白尘一体化装置，包括脱硫塔1、与所述脱硫塔I的烟气出口相连通的脱白装置、设置于所述脱白装置顶部且与其相连通的湿电除尘器，所述脱白装置包括固定设置于所述脱硫塔I上方的装置壳体2、设置于所述装置壳体2内的集水器3、设置于所述集水器3上方的喷淋装置8，所述装置壳体2上开设有集水口，所述集水口与集水管4相连通，所述集水管4通过集水管道与凉水塔5相连通，所述凉水塔5与沉淀池6相连通，所述沉淀池6的上部通过喷淋栗7连接有喷淋管道，所述喷淋管道与所述喷淋装置8相连通，所述沉淀池6的底部通过污水栗与脱硫制浆系统相连接。
[0019] 工作程序及有关技术思想:
(1)烟气脱硫脱白除尘一体化装置:工业生产中产生的含硫烟气首先进入下部脱硫塔I，经过脱硫后的湿烟气上行进入脱白装置，经过脱湿后的烟气继续上行进入湿电除尘器，经过除尘后的洁净烟气最后通过该装置上部烟囱排入大气；
(2)其中脱白装置:脱硫后的湿烟气从脱硫塔I的上部，经过脱白装置下部集水器3的气窗较均匀进入脱白装置内，进入后烟气横向不断扩展，流速逐渐减慢，并与该装置上部喷淋装置8喷下的水雾相向而行，湿烟气与水雾充分接触、碰撞，使湿烟气温度从50°C左右降到420C (夏季)到32°C (冬季)左右，烟气含湿度将从110g/Nm降到72g/Nm (夏季)到39g/Nm (冬季)左右，同时湿烟气析出的水与喷淋水一起向下滴落，经过集水器3收集后流到外面的集水环管内，经排水管道送到凉水塔5冷却，再经沉淀池6进行沉淀处理。之后由喷淋栗7将沉淀池6上部的净水提升到脱白装置上部的喷淋装置8循环使用;沉淀池6下部的污水(污水量相当于烟气脱白脱下来的水量)采用污水栗抽出直接供给脱硫制浆系统使用。
[0020]由于三套装置合一，可在一套装置内实现烟气脱硫、脱白和除尘；占地面积小，尤其在老厂改造中优势更为明显；总体投资省，生产运行费用相对低;脱白装置结构简单，易于生产维护;脱白使用的喷淋水可单独回收循环使用；回收烟气脱下来的水供脱硫制浆系统用，达到节水目的。
[0021] 本实施例中优选的实施方式为，所述集水器3呈锥形，所述装置壳体2的内侧设置有集水槽，所述集水口与所述集水槽相连通。
[0022] 本实施例中优选的实施方式为，所述集水管4呈圆环形，所述集水管4位于所述装置壳体2的外侧。
[0023] 为了提高喷淋效果，本实施例中优选的实施方式为，所述喷淋装置8包括上喷淋管以及下喷淋管，所述上喷淋管以及所述下喷淋管均与所述喷淋管道相连通，所述上喷淋管以及所述下喷淋管上均设置有若干喷嘴。
[0024] 本实施例中优选的实施方式为，所述湿电除尘器的顶部设置有排烟囱。
[0025] 以上显示和描述了本发明的基本原理和主要特征及其优点，本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (5)
1.烟气脱硫白尘一体化装置，其特征在于:包括脱硫塔、与所述脱硫塔的烟气出口相连通的脱白装置、设置于所述脱白装置顶部且与其相连通的湿电除尘器，所述脱白装置包括固定设置于所述脱硫塔上方的装置壳体、设置于所述装置壳体内的集水器、设置于所述集水器上方的喷淋装置，所述装置壳体上开设有集水口，所述集水口与集水管相连通，所述集水管通过集水管道与凉水塔相连通，所述凉水塔与沉淀池相连通，所述沉淀池的上部通过喷淋栗连接有喷淋管道，所述喷淋管道与所述喷淋装置相连通，所述沉淀池的底部通过污水栗与脱硫制浆系统相连接。
2.根据权利要求1所述的烟气脱硫白尘一体化装置，其特征在于:所述集水器呈锥形，所述装置壳体的内侧设置有集水槽，所述集水口与所述集水槽相连通。
3.根据权利要求2所述的烟气脱硫白尘一体化装置，其特征在于:所述集水管呈圆环形，所述集水管位于所述装置壳体的外侧。
4.根据权利要求1所述的烟气脱硫白尘一体化装置，其特征在于:所述喷淋装置包括上喷淋管以及下喷淋管，所述上喷淋管以及所述下喷淋管均与所述喷淋管道相连通，所述上喷淋管以及所述下喷淋管上均设置有若干喷嘴。
5.根据权利要求1所述的烟气脱硫白尘一体化装置，其特征在于:所述湿电除尘器的顶部设置有排烟囱。
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