CN103566720B - Ammonia method flue gas desulfurization apparatus - Google Patents

Ammonia method flue gas desulfurization apparatus Download PDF

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CN103566720B
CN103566720B CN 201210251774 CN201210251774A CN103566720B CN 103566720 B CN103566720 B CN 103566720B CN 201210251774 CN201210251774 CN 201210251774 CN 201210251774 A CN201210251774 A CN 201210251774A CN 103566720 B CN103566720 B CN 103566720B
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ammonia
method
flue
gas
desulfurization
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CN 201210251774
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CN103566720A (en )
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汪洋
胡维强
刘宗健
顾凤娟
任珉
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中国石油化工股份有限公司
中国石化扬子石油化工有限公司
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Abstract

本发明涉及一种氨法烟气脱硫装置,该装置包括排放净烟气的烟囱,在净烟气出口处的烟囱内安装一组沿轴向设置的侧面开孔的管和集液器组成的气溶胶处理装置,所述一组侧面开孔的管,其管内径为6mm~25mm,管高1m~20m,管内壁涂覆由多孔材料组成的涂层,涂层厚度为管径内的10%~70%,涂层的孔径为1~10um,侧面孔面积为管侧壁面积的5%~30%,本发明可以用于处理氨法烟气脱硫装置运行过程中产生的气溶胶,显著降低了烟气脱硫装置硫酸铵以气溶胶形式的逃逸,提高了烟气脱硫装置硫酸铵的经济性,同时减少气溶胶中硫酸铵等对环境的污染。 The present invention relates to an apparatus for flue gas desulfurization ammonia, the apparatus comprising a net flue gas discharge chimney, a set of sides is mounted axially disposed in the chimney flue gas at the outlet opening net tube and the liquid trap composition aerosol processing apparatus, a group of the side opening of the tube, the inner diameter of 6mm ~ 25mm, high tube 1m ~ 20m, the inner wall coating made of a porous material coating, the coating thickness of the inner diameter 10 % to 70%, a pore coating is 1 ~ 10um, lateral orifice area pipe 5 to 30% of the area of ​​the side walls, the present invention may be used in the aerosol process flue gas desulfurization process ammonia generated by the operation means, a significant reducing the flue gas desulphurization plant in the form of ammonium sulfate aerosol escaping the improved economy of flue gas desulfurization apparatus of ammonium sulfate, and ammonium sulfate aerosol while reducing environmental pollution.

Description

_种氨法烟气脱硫装置 _ Ammonia FGD apparatus Species

技术领域 FIELD

[0001] 本发明涉及一种氨法烟气脱硫装置。 [0001] The present invention relates to a flue gas desulfurization apparatus ammonia.

背景技术 Background technique

[0002] 随着经济的发展、社会的进步和人们环保意识的加强,工业锅炉烟气脱除二氧化硫日益受到重视。 [0002] With economic development, progress and strengthen social awareness of environmental protection, industrial boiler flue gas to remove sulfur dioxide and more attention. 工业上应用较多的烟气脱硫工艺主要有石灰石/石膏湿法脱硫工艺和氨法洗涤脱硫工艺,其中由于氨法是回收法,可充分利用我国广泛的氨源来生产硫肥,弥补我国大量进口硫磺的缺口,既治理了二氧化硫的污染,又满足长期大量的化肥需求,在国内受到了广泛的关注,并陆续有氨法脱硫工艺的工业应用。 Industrial application of more flue gas desulfurization are mainly limestone / gypsum wet desulfurization process and the washing process desulfurization ammonia, since ammonia which is recovered method can take advantage of a wide range of sources of ammonia to produce sulfur fertilizer, to make up a large number of gap of imported sulfur, both governance of sulfur dioxide pollution, but also to meet the needs of large quantities of fertilizer in the country received wide attention, and after another industrial application of ammonia desulfurization process. 但氨法烟气脱硫工艺在实际运行过程中,常出现硫酸铵随出口烟气逃逸的现象,硫酸铵的逃逸不仅对环境造成二次污染,而且也影响了脱硫装置的经济效益。 But ammonia flue gas desulfurization process in actual operation, often with ammonium sulfate exit gas escape phenomenon, ammonium sulfate escape not only cause secondary pollution to the environment, but also affected the economic benefits of desulfurization equipment. 研宄表明氨法烟气脱硫过程中易产生大量的气溶胶颗粒,气溶胶颗粒的形成主要通过两种途径:第一,氨水挥发逸出的气态NH3与烟气中的502通过气相反应形成(NH4)2S03、NH4HSO3、(NH4)2SO4等组分,其组成主要决定于S02/NH3比值、温度以及烟气中H2O与O2含量等;第二,氨水吸收烟气中SO2后的脱硫液滴,在高温烟气中,由于蒸发作用析出固态晶粒。 Showed a Subsidiary ammonia flue gas desulfurization process is easy to produce a large number of aerosol particles, aerosol particles are formed mainly in two ways: first, the gaseous ammonia escaping volatiles and NH3 in the flue gas 502 is formed by a gas phase reaction ( NH4) 2S03, NH4HSO3, (NH4) 2SO4 and other components consisting mainly determined by S02 / NH3 ratio in the flue gas temperature and H2O and O2 content, etc.; the second, the droplets of aqueous ammonia absorption desulfurization flue gas SO2, in the high temperature flue gas, since the evaporation precipitated solid grains. 鲍静静等(利用蒸汽相变脱除湿式氨法烟气脱硫中形成的气溶胶微粒,动力工程,2009,V29 (2):178〜183)开发了蒸汽相变法脱除硫铵气溶胶的方法,通过添加适量蒸汽提高烟气含湿量,可达到水蒸气在气溶胶颗粒表面凝结所需的过饱和度,使水汽在细颗粒表面凝结,促进亚微米级的气溶胶颗粒凝结长大,并由高效除雾器脱除凝结长大的含尘液滴。 Baojing Jing et (using a vapor phase removal of aerosol particles becomes wet flue gas desulfurization ammonia formed, Power Engineering, 2009, V29 (2): 178~183) developed a method of vapor phase removal of ammonium sulfate aerosol reform , by adding an appropriate amount of steam to improve the moisture content of the flue gas, water vapor can reach supersaturation desired aerosol particle surface condensation, water vapor condenses on the surface of fine particles, submicron promote condensation aerosol particles grow, and efficient removal of condensation from the demister grew up dust droplets. 张光学等利用声波对烟气进行辐射处理,使细颗粒发生团聚,改变粒径分布,增加气溶胶的平均粒径,从而提高在除尘器中的脱除效率。 The optical sheets such as the use of acoustic radiation of flue gas treatment, agglomeration of the fine particles, the particle size distribution changes, increasing the average particle diameter of the aerosol, thereby improving removal efficiency of the precipitator. 姜雨泽等(脉冲放电脱硫产物的收集,环境科学,2000,V (27)2:50〜53)利用脉冲电晕放电给产物粒子荷电量高的特点,通过给脉冲放电脱硫反应器加直流基压的方式使脱硫产物在涡流扩散、碰撞、分子间引力、静电吸引等作用下自然沉积到管壁上,从而有效收集脱硫产物。 Et Jiangyu Ze (discharge pulse collection desulfurization products, environmental science, 2000, V (27) 2: 50~53) by pulse corona discharge product particles to high charge amount characteristics, by applying a DC voltage to the pulse discharge yl desulfurization reactor the desulfurization products diffuse manner in the vortex collision, intermolecular attraction, electrostatic attraction, etc. acting NATURAL deposited onto the wall, so that efficient collection of the desulfurization products. 这些方法在应用过程虽然有一定的效果,但在应用过程中较复杂,有的设备投资较高,有的操作不方便。 Although these methods in the application process have a certain effect, but in the application process more complicated, some higher investment in equipment, some inconvenient to operate.

发明内容 SUMMARY

[0003] 本发明提供一种氨法烟气脱硫装置,形式简单,方便处理气溶胶,以降低烟气出口中硫酸铵的逃逸,减少气溶胶对环境产生的污染。 [0003] The present invention provides an apparatus for flue gas desulfurization ammonia, in the form of a simple, convenient process aerosol to reduce the escaping flue gas outlet of ammonium sulfate and reduce pollution aerosols on the environment.

[0004] 所述氨法烟气脱硫装置,包括排放净烟气的烟囱,在净烟气出口处的烟囱内安装一组侧面开孔的管和集液器组成的气溶胶处理装置,所述一组侧面开孔的管,其管内径为6mm〜25mm,管高Im〜20m,管内壁敷设由多孔材料等组成的涂层,涂层厚度为管径的10%〜70%。 Aerosol treatment device and the liquid collection tube composed of [0004] the ammonia FGD apparatus, comprising a flue gas discharge chimney net, a set of sides is mounted in the chimney flue gas at the outlet of the net opening, said a group of the side opening tube inner diameter of 6mm~25mm, high tube Im~20m, laying the inner wall coating consisting of a porous material or the like, a coating thickness of 10% ~ 70% of the diameter. 有管侧面开孔的方式可以是长条形、圆形、方形等,侧面孔面积为管面积的5%〜30%,一组侧面开孔的管的总截面积为烟囱截面积的10%〜70%,一组侧面开孔管的顶部与冲洗水入口连接,底部与集液器连接。 Manner with a tube side openings may be elongated, round, square, etc., the lateral bore area is 5% ~ 30% of the area of ​​the tube, a set of side apertures total sectional area of ​​the tube cross-sectional area of ​​the chimney 10% ~ 70%, the top side of the tube openings and a set of flushing water inlet is connected to the bottom of the header connector.

[0005] 优选,所述一组侧面开孔的管在烟囱中均匀分布。 [0005] Preferably, the side opening of the tube set are uniformly distributed in the chimney.

[0006] 所述的涂层材料可以是纤维、活性炭、硅藻土等多孔材料。 [0006] The coating material may be a fiber, activated carbon, diatomaceous earth and other porous materials.

[0007] 所述的集液器为槽状结构,其底部连接至烟气脱硫装置的吸收液喷淋处(是指用于脱硫的吸收液喷淋处)。 [0007] The liquid trap is a groove-shaped structure, which is connected to the bottom portion of the absorption liquid spray FGD (fluid spray means for absorbing at desulfurization). 集液器可以是一个,即一个集液器收集所有管的液体,也可是多个集液器,即一个集液器收集I〜10根管的液体。 It may be a liquid trap, i.e. a liquid trap to collect all the liquid pipes, but also a plurality of liquid trap, i.e. a liquid trap to collect liquid I~10 root tube.

[0008] 所述的冲洗水可以是连续冲洗也可以是间歇冲洗方式,每根侧面开孔的管内冲洗水平均流量为10〜100L/h。 [0008] The flushing water can be flushed continuously flushing mode may be a batch, flush water in each side pipe average flow openings 10~100L / h. 集液器收集的水可以作为脱硫装置的吸收液,进入吸收液喷淋处,也可以直接排出。 Liquid trap to collect water may be used as the absorbent liquid of the desulfurization apparatus, the spray liquid into the absorbent, it can be directly discharged. 冲洗水可以将吸附在管内的硫酸铵气溶胶带出。 Rinse water may be adsorbed within the tube out of ammonium sulfate aerosol.

[0009] 本发明的作用原理是:通过在氨法脱硫装置排放净烟气的烟囱中设置一组侧面开孔的管。 [0009] Mechanisms of this invention is: a set of sides by providing means for discharging ammonia in the desulfurization of flue gas chimney net openings in the tube. 占据了烟气在烟囱中的流通空间,使烟气流动的湍动更加强烈,有利于烟气中气溶胶颗粒之间的碰撞、长大。 Occupy space in the chimney flue gas flow in the flue gas flow turbulence more intense, in favor of a collision between the smoke aerosol particles, grow up. 气溶胶颗粒进入管中,被管中的多孔材料吸附,从而达到脱除烟气中气溶胶的目的。 Aerosol particles into the tube, the tube is adsorbed in the porous material, so as to achieve the purpose of removing smoke aerosols.

[0010] 本发明可以用于处理氨法烟气脱硫装置运行过程中产生的气溶胶,显著降低了烟气脱硫装置硫酸铵以气溶胶形式的逃逸,提高了烟气脱硫装置硫酸铵的经济性,同时减少气溶胶中硫酸铵等对环境的污染。 [0010] The present invention may be used in the processing apparatus during operation of the aerosol ammonia produced in flue gas desulfurization, flue gas desulfurization significantly reduces the apparatus in the form of ammonium sulfate aerosol escaping the improved economy of flue gas desulfurization apparatus of ammonium sulfate while reducing ammonium sulfate aerosol pollution of the environment.

附图说明 BRIEF DESCRIPTION

[0011] 图1是实施例1所用氨法烟气脱硫装置的示意图,其中 [0011] FIG. 1 is a schematic illustration of a flue gas desulfurization apparatus ammonia embodiment, wherein

[0012] 1:烟气脱硫装置烟囱,2:侧面开孔列管,3:集液器。 [0012] 1: chimney flue gas desulfurization apparatus, 2: a side aperture tube, 3: liquid trap.

具体实施方式 detailed description

[0013] 下面的实施例将对本发明提供的方法做进一步说明,但本发明并不限于实施例。 [0013] The following examples illustrate the present invention provides a method further illustrated, but the present invention is not limited to the embodiments.

[0014] 实施例1 [0014] Example 1

[0015] 在氨法烟气脱硫装置中加装气溶胶处理装置,气溶胶处理装置侧面开孔管的长度为lm,管径为6mm,管内涂有Imm厚的硅藻土涂层,侧面开孔由Φ I的圆孔组成,在管侧面上均布,孔面积为管面积的5%,侧面开孔管的截面积为烟囱内径的70%,在管底部设有集液器,收集冲洗水。 [0015] Aerosol apparatus installed in an ammonia FGD apparatus, the aerosol processing apparatus side opening of the tube length LM, pipe diameter 6mm, diatomaceous earth coated with a coating thickness of Imm inner tube, open side by a circular aperture Φ I composition, on the tube side uniform, pore area is 5% of the area of ​​the pipe, the cross-sectional area of ​​the side opening of the tube is 70% of the inner diameter of the chimney, is provided at the bottom of the liquid collection tube for collecting the flushing water. 净烟气中原含有硫酸铵为310mg/m3,加装气溶胶处理装置后,净烟气中硫酸铵含量降低为38mg/m3,硫酸铵的脱除率为87.7%。 Central net flue gas containing ammonium sulfate was 310mg / m3, after the installation of an aerosol processing apparatus, the net content of the flue gas is reduced to ammonium sulfate 38mg / m3, ammonium sulfate removal was 87.7%.

[0016] 实施例2 [0016] Example 2

[0017] 在氨法烟气脱硫装置中加装气溶胶处理装置,气溶胶处理装置侧面开孔管的长度为20m,管径为25mm,管内涂有1mm厚的纤维涂层,侧面开孔由ImmXlOmm的长条形孔组成,在管侧面上均布,孔面积为管面积的30 %,侧面开孔管的截面积为烟囱内径的10 %,在管底部设有集液器,收集冲洗水。 [0017] Aerosol apparatus installed in an ammonia FGD apparatus, the aerosol processing apparatus side opening of the tube length 20m, diameter of 25mm, coated with 1mm thick fiber coating of the inner tube, the side opening ImmXlOmm composition elongated hole, in the side of the tube uniform, hole area of ​​30% of the area of ​​the pipe, the cross-sectional area of ​​the side opening of the tube is 10% of the inner diameter of the chimney, is provided at the bottom of the liquid collection tube for collecting the flushing water . 净烟气中原含有硫酸铵为310mg/m3,加装气溶胶处理装置后,净烟气中硫酸铵含量降低为46mg/m3,硫酸铵的脱除率为85.2%。 Central net flue gas containing ammonium sulfate was 310mg / m3, after the installation of an aerosol processing apparatus, the net content of the flue gas is reduced to ammonium sulfate 46mg / m3, ammonium sulfate removal was 85.2%.

[0018] 实施例3 [0018] Example 3

[0019] 在氨法烟气脱硫装置中加装气溶胶处理装置,气溶胶处理装置侧面开孔管的长度为10m,管径为6mm,管内涂有3mm厚的活性炭涂层,侧面开孔由2mmX 2mm的方孔组成,在管侧面上均布,孔面积为管面积的5%,侧面开孔管的截面积为烟囱内径的50%,在管底部设有集液器,收集冲洗水。 [0019] Aerosol apparatus installed in an ammonia FGD apparatus, the aerosol processing apparatus side opening of the tube length 10m, diameter of 6mm, 3mm thick coated with activated carbon coating on the inner tube, the side opening composition 2mmX 2mm square hole in the side of the tube uniform, pore area is 5% of the area of ​​the pipe, the cross-sectional area of ​​the side opening of the tube is 50% of the inner diameter of the chimney, is provided at the bottom of the liquid collection tube for collecting the flushing water. 净烟气中原含有硫酸铵为310mg/m3,加装气溶胶处理装置后,净烟气中硫酸铵含量降低为29mg/m3,硫酸铵的脱除率为90.6%。 Central net flue gas containing ammonium sulfate was 310mg / m3, after the installation of an aerosol processing apparatus, the net content of the flue gas is reduced to ammonium sulfate 29mg / m3, ammonium sulfate removal was 90.6%.

[0020] 实施例4 [0020] Example 4

[0021] 在氨法烟气脱硫装置中加装气溶胶处理装置,气溶胶处理装置侧面开孔管的长度为10m,管径为6mm,管内涂有4mm厚的活性炭涂层,侧面开孔由Φ1的圆孔组成,在管侧面上均布,孔面积为管面积的10%,侧面开孔管的截面积为烟囱内径的70%,在管底部设有集液器,收集冲洗水。 [0021] Aerosol apparatus installed in an ammonia FGD apparatus, the aerosol processing apparatus side opening of the tube length 10m, diameter of 6mm, 4mm thick coated with activated carbon coating on the inner tube, the side opening Φ1 composition of the hole, on the side of the tube uniform, hole area of ​​10% of the area of ​​the pipe, the cross-sectional area of ​​the side opening of the tube is 70% of the inner diameter of the chimney, is provided at the bottom of the liquid collection tube for collecting the flushing water. 净烟气中原含有硫酸铵为310mg/m3,加装气溶胶处理装置后,净烟气中硫酸铵含量降低为23mg/m3,硫酸铵的脱除率为92.6%。 Central net flue gas containing ammonium sulfate was 310mg / m3, after the installation of an aerosol processing apparatus, the net content of the flue gas is reduced to ammonium sulfate 23mg / m3, ammonium sulfate removal was 92.6%.

[0022] 实施例5 [0022] Example 5

[0023] 在氨法烟气脱硫装置中加装气溶胶处理装置,气溶胶处理装置侧面开孔管的长度为10m,管径为6mm,管内涂有Imm厚的活性炭涂层,侧面开孔由2mmX 2mm的方孔组成,在管侧面上均布,孔面积为管面积的5%,侧面开孔管的截面积为烟囱内径的30%,在管底部设有集液器,收集冲洗水。 Activated carbon coating [0023] Aerosol apparatus installed in an ammonia FGD apparatus, the aerosol processing apparatus side opening of the tube length 10m, diameter of 6mm, inner tube coated with a thickness of Imm, the side openings composition 2mmX 2mm square hole in the side of the tube uniform, pore area is 5% of the area of ​​the pipe, the cross-sectional area of ​​the side opening of the tube is 30% of the inner diameter of the chimney, is provided at the bottom of the liquid collection tube for collecting the flushing water. 净烟气中原含有硫酸铵为310mg/m3,加装气溶胶处理装置后,净烟气中硫酸铵含量降低为34mg/m3,硫酸铵的脱除率为89.0%。 Central net flue gas containing ammonium sulfate was 310mg / m3, after the installation of an aerosol processing apparatus, the net content of the flue gas is reduced to ammonium sulfate 34mg / m3, ammonium sulfate removal was 89.0%.

Claims (2)

  1. 1.一种氨法烟气脱硫装置,包括排放净烟气的烟囱,其特征在于,在净烟气出口处的烟囱内安装一组沿轴向设置的侧面开孔的管和集液器组成的气溶胶处理装置,所述一组侧面开孔的管,其管内径为6mm〜25mm,管高Im〜20m,管内壁涂覆由多孔材料组成的涂层,涂层厚度为管内径的10%〜70%,涂层的孔径为I〜10 μπι,侧面孔面积为管侧壁面积的5%〜30%,所述一组侧面开孔的管的总截面积为烟囱截面积的10%〜70%,所述一组侧面开孔管的顶部与冲洗水入口连接,底部与集液器连接,所述多孔材料为纤维、活性炭或硅藻土。 Ammonia A flue gas desulfurization apparatus comprising a net flue gas discharge chimney, characterized in that, a set of sides is mounted axially disposed opening in the chimney flue gas at the outlet of the pipe net and liquid trap composition aerosol processing apparatus, a group of the side opening of the tube, the inner diameter of 6mm~25mm, high tube Im~20m, a coating thickness of the tube wall is coated by a porous material for the inner diameter of the tube 10 % ~ 70%, a pore coating is I~10 μπι, lateral orifice area pipe 5% ~ 30% of the area of ​​the side walls, the side opening of the set of the total sectional area of ​​the tube cross-sectional area of ​​the chimney 10% ~ 70%, a top side surface of said set of apertures of the flush water inlet pipe connected to the bottom of the liquid collector is connected to the porous material is a fiber, activated carbon, or diatomaceous earth.
  2. 2.如权利要求1所述的氨法烟气脱硫装置,其特征在于,所述一组侧面开孔的管在烟囱中均匀分布。 Ammonia flue gas desulfurization apparatus as claimed in claim 1, wherein said set of side apertures uniformly distributed tubes in the chimney.
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WO2010062794A1 (en) * 2008-11-26 2010-06-03 Corning Incorporated Coated particulate filter and method
CN101927129A (en) * 2010-09-15 2010-12-29 江苏和亿昌环保工程科技有限公司 Monotower ammonia desulfuration recovery method for removing aerosols in flue gas
WO2012062465A1 (en) * 2010-11-11 2012-05-18 Reventa Kunststoffverarbeitung Gmbh & Co. Kg Apparatus for purifying exhaust air

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2071081U (en) * 1990-06-29 1991-02-13 戴利国 Exhaust air purifier
CN101277749A (en) * 2005-09-02 2008-10-01 巴斯夫欧洲公司 Method and device for removing sulphur dioxide from a dry gas stream
WO2010062794A1 (en) * 2008-11-26 2010-06-03 Corning Incorporated Coated particulate filter and method
CN101927129A (en) * 2010-09-15 2010-12-29 江苏和亿昌环保工程科技有限公司 Monotower ammonia desulfuration recovery method for removing aerosols in flue gas
WO2012062465A1 (en) * 2010-11-11 2012-05-18 Reventa Kunststoffverarbeitung Gmbh & Co. Kg Apparatus for purifying exhaust air

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