CN207745708U - Flue gas and desulfurizing and denitrifying integrated purification system - Google Patents
Flue gas and desulfurizing and denitrifying integrated purification system Download PDFInfo
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000003546 flue gas Substances 0.000 title claims abstract description 71
- 238000000746 purification Methods 0.000 title claims abstract description 22
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract 12
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 29
- 230000023556 desulfurization Effects 0.000 claims abstract description 29
- 239000007921 spray Substances 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 230000003134 recirculating effect Effects 0.000 claims abstract 15
- 239000000843 powder Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 239000000428 dust Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 238000009736 wetting Methods 0.000 claims 1
- 208000028659 discharge Diseases 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000005245 sintering Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000779 smoke Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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Abstract
Description
技术领域technical field
本实用新型属于烟气净化领域，涉及烟气同时脱硫脱硝一体化净化系统，尤其涉及针对钢铁行业的烧结烟气和燃煤烟气。The utility model belongs to the field of flue gas purification, and relates to a flue gas simultaneous desulfurization and denitrification integrated purification system, in particular to sintering flue gas and coal-fired flue gas for the iron and steel industry.
背景技术Background technique
随着经济发展，尤其以能源消耗为主的经济迅速增长，大量工厂排放含有颗粒物、SO2、NOX、重金属等污染物的烟气，造成酸雨、雾霾和光化学烟雾，对人、动植物造成极大的危害。为了满足人们对于环保的需求，加快能源生产和消费革命进程，国家对于工业烟气排放标准逐渐提高。2016年《钢铁烧结、球团工业大气污染物排放标准》进行了排放标准修改公告，对二氧化硫、氮氧化物的排放限制再次调整，根据重点地区环境空气质量管理需求，应进一步深化钢铁烧结、球团工业烟气治理，加严特别排放限值要求。关于《火电大气污染物排放标准》(GB13223-2011)燃煤锅炉超低排放标准出台，即为燃煤机组超低排放限值烟尘、二氧化硫、氮氧化物排放浓度(基准含氧量6％)分别不超过5mg/m3、 35mg/m3、50mg/m3。因此，同时控制SO2、NOx的排放迫在眉睫。With the development of the economy, especially the rapid growth of the economy dominated by energy consumption, a large number of factories emit flue gas containing particulate matter, SO 2 , NO X , heavy metals and other pollutants, causing acid rain, smog and photochemical smog, which is harmful to people, animals and plants cause great harm. In order to meet people's demand for environmental protection and accelerate the process of energy production and consumption revolution, the country has gradually raised the emission standards for industrial smoke. In 2016, the "Emission Standards of Air Pollutants for Iron and Steel Sintering and Pelletizing Industry" announced the revision of emission standards, and adjusted the emission limits of sulfur dioxide and nitrogen oxides again. Control industrial flue gas, and tighten special emission limit requirements. Regarding the "Emission Standards of Air Pollutants for Thermal Power" (GB13223-2011), the ultra-low emission standards for coal-fired boilers are issued, which is the ultra-low emission limits for coal-fired units. No more than 5mg/m 3 , 35mg/m 3 , 50mg/m 3 respectively. Therefore, it is imminent to simultaneously control the emissions of SO 2 and NO x .
作为工业废气主要的来源，我国燃煤电厂当下所采用的污染物脱除设备，由于历史原因大多数是不同时期形成的功能单一、串联使用的烟气净化设备序列，常用的为石灰石-石膏法脱硫+SCR脱硝+电(袋)除尘的方式，由于国内燃煤自身高灰、高硫以及烟气处理量大的现状，采用原有技术无法满足超低排放要求。钢铁工业在我国得到了快速的发展，但其烧结烟气污染却成为制约我国冶金行业持续发展的一个重要因素。钢铁行业所产生的烧结烟气具有排放温度较低、波动范围大、含湿量高、化学组分复杂、粒径分布广的特点，目前，对烟气同时脱硫脱硝还缺乏简单有效的综合治理方法。传统治理方法除了对烟气中的粉尘、SO2有所控制外，对于NOx、二噁英等有害物质并未进行有效控制。因此，进行烟气多污染物一体化控制已经成为我国环境保护和实现钢铁冶金行业持续发展的必然选择。As the main source of industrial waste gas, most of the pollutant removal equipment currently used by coal-fired power plants in my country is a sequence of flue gas purification equipment with a single function and used in series formed in different periods due to historical reasons. The limestone-gypsum method is commonly used The method of desulfurization + SCR denitrification + electric (bag) dust removal, due to the current situation of high ash, high sulfur and large flue gas treatment capacity of domestic coal combustion, the original technology cannot meet the ultra-low emission requirements. The iron and steel industry has developed rapidly in my country, but its sintering flue gas pollution has become an important factor restricting the sustainable development of my country's metallurgical industry. The sintering flue gas produced in the iron and steel industry has the characteristics of low discharge temperature, large fluctuation range, high moisture content, complex chemical components, and wide particle size distribution. At present, there is still a lack of simple and effective comprehensive treatment for simultaneous desulfurization and denitrification of flue gas method. In addition to the control of dust and SO 2 in the flue gas, traditional treatment methods have not effectively controlled harmful substances such as NO x and dioxins. Therefore, the integrated control of flue gas multi-pollutants has become an inevitable choice for my country's environmental protection and sustainable development of the iron and steel metallurgical industry.
目前，作为钢铁行业烟气多污染物一体化控制的主要目标是对烧结烟气进行脱硫脱硝，主要通过传统脱硫技术同烟气脱硝技术相组合。传统脱硫技术中多以钙基颗粒作为脱硫剂，具有脱硫效果好(脱硫效率达95％以上)，运行稳定等优点，但同时也具有占地面积大、运行费用高、易堵塞、不能有效控制NOx等问题。烟气脱硝技术主要包括选择性催化还原(SCR)和非选择性催化还原(SNCR)两种。SNCR所需的温度窗口达850-1050℃，一般需另设加热装置将烟气加热至此温度窗口，能耗较高，效率低，因此脱硝系统多以SCR技术为主。At present, the main goal of the integrated control of flue gas multi-pollutants in the iron and steel industry is to desulfurize and denitrify sintering flue gas, mainly through the combination of traditional desulfurization technology and flue gas denitrification technology. In the traditional desulfurization technology, calcium-based particles are mostly used as desulfurizers, which have the advantages of good desulfurization effect (the desulfurization efficiency is over 95%) and stable operation. NO x and other issues. Flue gas denitrification technologies mainly include two types: selective catalytic reduction (SCR) and non-selective catalytic reduction (SNCR). The temperature window required by SNCR is 850-1050°C. Generally, another heating device is required to heat the flue gas to this temperature window. The energy consumption is high and the efficiency is low. Therefore, the denitrification system is mostly based on SCR technology.
若采用上述传统脱硫技术同烟气脱硝技术相组合工艺协同脱硫脱硝，虽可以达到脱硫脱硝的目的，但需多套设备协同，存在总投资大、工艺复杂、占地面积大等问题。此外，烧结烟气具有二氧化硫含量高，温度低(100-180℃)的特点，若采用SCR技术，一次性投资较高，一层SCR催化剂的脱硝效率仅在50％左右，为达到脱硝效率75％以上则需布置两层SCR催化剂，但是在该条件下难以满足 SCR催化剂反应温度通常为300-450℃的要求，因此需对脱硝过程中的烟气进行加热。与此同时，利用SCR技术脱硝过程中易产生硫酸铵和硫酸氢铵，堵塞SCR 催化剂使得SCR催化剂中毒，进而使得相关成本大增。因此设计研发一套适用于钢铁行业烧结烟气同时脱硫脱硝的技术，降低钢铁行业烧结烟气的净化处理成本，将至关重要。If the above-mentioned traditional desulfurization technology is combined with the flue gas denitrification technology for synergistic desulfurization and denitrification, although the purpose of desulfurization and denitrification can be achieved, it requires the coordination of multiple sets of equipment, and there are problems such as large total investment, complicated process, and large floor area. In addition, sintering flue gas has the characteristics of high sulfur dioxide content and low temperature (100-180°C). If SCR technology is used, the one-time investment is relatively high, and the denitrification efficiency of one layer of SCR catalyst is only about 50%. % and above, two layers of SCR catalysts need to be arranged, but it is difficult to meet the requirement that the reaction temperature of SCR catalysts is usually 300-450°C under this condition, so the flue gas in the denitrification process needs to be heated. At the same time, ammonium sulfate and ammonium bisulfate are likely to be produced during the denitrification process using SCR technology, which will block the SCR catalyst and poison the SCR catalyst, which will greatly increase the related costs. Therefore, it is very important to design and develop a set of technologies suitable for simultaneous desulfurization and denitrification of sintering flue gas in the iron and steel industry, and to reduce the cost of purification and treatment of sintering flue gas in the iron and steel industry.
实用新型内容Utility model content
本实用新型为了克服上述背景技术中的问题，提供烟气同时脱硫脱硝一体化净化系统，该净化系统通过同一循环流化床对烟气同时进行脱硫脱硝，降低了烟气脱硫脱硝成本。In order to overcome the above-mentioned problems in the background technology, the utility model provides an integrated flue gas desulfurization and denitrification integrated purification system. The purification system simultaneously desulfurizes and denitrates flue gas through the same circulating fluidized bed, reducing the cost of flue gas desulfurization and denitrification.
烟气同时脱硫脱硝一体化净化系统，包括脱硫脱硝剂计量给料系统，循环流化床，喷淋供水设备，气固分离设备及排放设备，所述脱硫脱硝剂计量给料系统包括配料器、计量给料设备及干粉喷射管，所述配料器的出料端与计量给料设备的进料端通过管道连接，所述计量给料设备的出料端与干粉喷射管的进料口通过管道连接，所述干粉喷射管的喷射口与循环流化床的进料口连接，所述循环流化床上设有烟气通入口，循环流化床内设有喷淋头，所述循环流化床的出气端与气固分离设备的进气端通过管道连接，所述循环流化床内的喷淋头与喷淋供水设备通过管道连接，气固分离设备的出气端与排放设备连接。Simultaneous flue gas desulfurization and denitrification integrated purification system, including desulfurization and denitrification agent metering and feeding system, circulating fluidized bed, spray water supply equipment, gas-solid separation equipment and discharge equipment, the desulfurization and denitrification agent metering and feeding system includes batching device, Metering feeding equipment and dry powder injection pipe, the discharge end of the batcher is connected to the feed end of the metering feeding equipment through a pipeline, and the discharge end of the metering feeding equipment is connected to the feed port of the dry powder injection pipe through a pipeline connected, the injection port of the dry powder injection pipe is connected with the feed port of the circulating fluidized bed, the circulating fluidized bed is provided with a flue gas inlet, the circulating fluidized bed is provided with a spray head, and the circulating fluidized bed The gas outlet of the fluidized bed is connected to the inlet of the gas-solid separation equipment through pipelines, the spray head in the circulating fluidized bed is connected to the spray water supply equipment through pipelines, and the gas outlet of the gas-solid separation equipment is connected to the discharge equipment.
优选地，所述计量给料设备包括电子螺旋称、旋转给料机、气力输送泵、罗茨风机，所述计量给料设备的进料端为电子螺旋称的进料端，所述电子螺旋称的出料端与旋转给料机的进料端连接，所述气力输送泵包括进风加速口、干粉进料口和加速干粉出料口，所述旋转给料机的出料端与气力输送泵的干粉进料口连接，所述罗茨风机的出风口与气力输送泵的进风加速口连接，所述计量给料设备的出料端为气力输送泵的加速干粉出料口。Preferably, the metering and feeding equipment includes an electronic screw scale, a rotary feeder, a pneumatic conveying pump, and a Roots blower. The discharge end of the scale is connected to the feed end of the rotary feeder, and the pneumatic conveying pump includes an air inlet acceleration port, a dry powder feed port and an accelerated dry powder discharge port, and the discharge end of the rotary feeder is connected to the pneumatic feeder. The dry powder feed port of the conveying pump is connected, the air outlet of the Roots blower is connected with the air inlet acceleration port of the pneumatic conveying pump, and the discharge end of the metering and feeding equipment is the accelerated dry powder discharge port of the pneumatic conveying pump.
通常地，所述气力输送泵为文丘里供料器、SK粉体两路阀或仓泵。Usually, the pneumatic conveying pump is a Venturi feeder, SK powder two-way valve or a bin pump.
通常地，根据脱硫脱硝剂喷入量，多个设置所述干粉喷射管，多个干粉喷射管的进料口通过分支管道形式与气力输送泵的加速干粉出料口连接。Usually, according to the amount of desulfurization and denitrification agent injected, multiple dry powder injection pipes are provided, and the feed ports of the multiple dry powder injection pipes are connected with the accelerated dry powder discharge port of the pneumatic conveying pump in the form of branch pipes.
优选地，所述喷淋供水设备包括水库和水泵，水泵的进水端与水库通过管道连接，水泵的出水端与循环流化床内的喷淋头通过管道连接。通过水泵将水库中的液体供应到循环流化床内的喷淋头。Preferably, the sprinkler water supply equipment includes a reservoir and a water pump, the water inlet end of the water pump is connected to the reservoir through a pipeline, and the water outlet end of the water pump is connected to the spray head in the circulating fluidized bed through a pipeline. The liquid in the reservoir is supplied by a water pump to the sprinklers in the circulating fluidized bed.
优选地，所述气固分离设备为袋式除尘器。Preferably, the gas-solid separation equipment is a bag filter.
通常地，所述排放设备包括引风机及排烟烟囱，气固分离设备的出气端与引风机的入风端通过管道连接，引风机的出风端与排烟烟囱的进气端通过管道连接。Generally, the exhaust equipment includes an induced draft fan and a smoke exhaust chimney, the outlet end of the gas-solid separation equipment is connected with the air inlet end of the induced draft fan through a pipeline, and the air outlet end of the induced draft fan is connected with the intake end of the smoke exhaust chimney through a pipeline .
优选地，所述循环流化床为连续循环流化床。Preferably, the circulating fluidized bed is a continuous circulating fluidized bed.
所述连续循环流化床可为市售设备，为了达到更好的效果，本实用新型提供连续循环流化床和间歇循环流化床如下：The continuous circulating fluidized bed can be commercially available equipment. In order to achieve better results, the utility model provides a continuous circulating fluidized bed and an intermittent circulating fluidized bed as follows:
优选地，所述连续循环流化床包括连续反应器、旋风除尘器及回料斗，所述连续反应器为封闭式反应器，连续反应器下端设有烟气混合室，烟气混合室侧面开有烟气通入口，烟气混合室上方的连续反应器内设有喷淋头，喷淋头的上方连续反应器侧壁设有第一进料口，所述第一进料口与干粉喷射管的喷射口连接，所述连续反应器顶端设有出气口，该出气口与旋风除尘器的进气端管道连接，所述旋风除尘器底端设有灰斗，灰斗的出料端与回料斗的进料端连接，回料斗的出料端与连续反应器侧壁设置的第二进料口连接，所述旋风除尘器的出气端为循环流化床的出气端。Preferably, the continuous circulating fluidized bed includes a continuous reactor, a cyclone dust collector and a return hopper, the continuous reactor is a closed reactor, a flue gas mixing chamber is provided at the lower end of the continuous reactor, and the side of the flue gas mixing chamber is opened. There is a flue gas inlet, and a spray head is provided in the continuous reactor above the flue gas mixing chamber, and a first feed port is provided on the side wall of the continuous reactor above the spray head, and the first feed port is connected with the dry powder injection The injection port of the pipe is connected, the top of the continuous reactor is provided with an air outlet, and the air outlet is connected with the inlet pipe of the cyclone dust collector, and the bottom end of the cyclone dust collector is provided with an ash hopper, and the discharge end of the ash hopper is connected to the The feed end of the return hopper is connected, the discharge end of the return hopper is connected with the second feed port provided on the side wall of the continuous reactor, and the gas outlet of the cyclone dust collector is the gas outlet of the circulating fluidized bed.
进一步地，所述烟气混合室底端设有排废管以及与之对应的混合室排废阀。Further, the bottom end of the flue gas mixing chamber is provided with a waste pipe and a waste valve of the mixing chamber corresponding thereto.
通常地，所述灰斗的出料端上设有灰斗卸料阀。便于控制灰斗的出料速度，使得其中的物料能够顺利排出。Usually, an ash hopper discharge valve is provided on the discharge end of the ash hopper. It is convenient to control the discharge speed of the ash hopper, so that the materials in it can be discharged smoothly.
本实用新型能够直接应用于燃煤烟气和烧结烟气的排放处理，或是直接加装于燃煤烟气处理设备的后端，使得烟气排放标准符合相关规定。The utility model can be directly applied to the discharge treatment of coal-burning flue gas and sintering flue gas, or directly installed at the back end of coal-burning flue gas treatment equipment, so that the flue gas discharge standard meets relevant regulations.
本实用新型具有以下有益效果：The utility model has the following beneficial effects:
1、本实用新型系统将烟气脱硫、脱硝和除尘进行有机组合形成一个完整的工艺体系，简化了烟气在脱硫、脱硝、除尘各个环节独立进行的现有技术，从而降低前期投资和运行费用。1. The utility model system organically combines flue gas desulfurization, denitrification and dust removal to form a complete process system, which simplifies the existing technology in which flue gas is independently carried out in each link of desulfurization, denitrification and dust removal, thereby reducing initial investment and operating costs .
2、本实用新型系统能广泛应用于各种窑炉的烟气治理，包括燃煤锅炉、烧结机、水泥窑、焦炉等，装备运行可靠，使用寿命长，易维护，烟气能达标排放。2. The utility model system can be widely used in the flue gas treatment of various kilns, including coal-fired boilers, sintering machines, cement kilns, coke ovens, etc. The equipment is reliable in operation, long in service life, easy to maintain, and the flue gas can be discharged up to the standard .
附图说明Description of drawings
图1为本实用新型烟气同时脱硫脱硝一体化净化系统的一种结构示意图。Fig. 1 is a structural schematic diagram of an integrated purification system for simultaneous desulfurization and denitrification of flue gas of the present invention.
图中，1配料器，1-1配料阀，2电子螺旋称，3旋转给料机，4罗茨风机，5 气力输送泵，6干粉喷射管，6-1干粉喷射阀，7气固分离设备，8引风机，9排烟烟囱，10连续反应器，10-1烟气混合室，10-2混合室排废阀，11旋风除尘器， 11-1灰斗卸料阀，12回料斗，21烟气通入管，22水库，23水泵，24喷淋头。In the figure, 1 batching device, 1-1 batching valve, 2 electronic screw scale, 3 rotary feeder, 4 Roots fan, 5 pneumatic conveying pump, 6 dry powder injection pipe, 6-1 dry powder injection valve, 7 gas-solid separation Equipment, 8 induced draft fan, 9 exhaust chimney, 10 continuous reactor, 10-1 flue gas mixing chamber, 10-2 mixing chamber exhaust valve, 11 cyclone dust collector, 11-1 ash hopper discharge valve, 12 return hopper , 21 flue gas inlet pipe, 22 reservoir, 23 water pump, 24 sprinkler head.
具体实施方式Detailed ways
下面通过实施例并结合附图对本实用新型作进一步说明。值得指出的是，给出的实施例不能理解为对本实用新型保护范围的限制，该领域的技术人员根据本实用新型的内容对本实用新型作出的一些非本质的改进和调整仍应属于本实用新型保护范围。Below by embodiment and in conjunction with accompanying drawing, the utility model is further described. It is worth pointing out that the given embodiments can not be interpreted as limiting the scope of protection of the utility model, and some non-essential improvements and adjustments made by those skilled in the art according to the content of the utility model should still belong to the utility model protected range.
如图1所示，本实施例所提供烟气同时脱硫脱硝一体化净化系统，包括脱硫脱硝剂计量给料系统，连续循环流化床，喷淋供水设备，气固分离设备7及排放设备，所述脱硫脱硝剂计量给料系统包括配料器1、计量给料设备及干粉喷射管 6，所述计量给料设备包括电子螺旋称2、旋转给料机3、气力输送泵5、罗茨风机4，所述气力输送泵5为文丘里供料器，包括进风加速口、干粉进料口和加速干粉出料口，所述连续循环流化床包括连续反应器10、旋风除尘器11及回料斗 12，所述喷淋供水设备包括水库22和水泵23，所述排放设备包括引风机8和排烟烟囱9；As shown in Figure 1, the flue gas simultaneous desulfurization and denitrification integrated purification system provided in this embodiment includes a desulfurization and denitrification agent metering and feeding system, a continuous circulating fluidized bed, spray water supply equipment, gas-solid separation equipment 7 and discharge equipment, The desulfurization and denitration agent metering and feeding system includes a batcher 1, metering and feeding equipment and a dry powder injection pipe 6, and the metering and feeding equipment includes an electronic screw scale 2, a rotary feeder 3, a pneumatic conveying pump 5, and a Roots blower 4. The pneumatic conveying pump 5 is a Venturi feeder, including an air inlet acceleration port, a dry powder feed port and an accelerated dry powder discharge port, and the continuous circulating fluidized bed includes a continuous reactor 10, a cyclone dust collector 11 and Back to the hopper 12, the spray water supply equipment includes a reservoir 22 and a water pump 23, and the discharge equipment includes an induced draft fan 8 and a smoke exhaust chimney 9;
所述配料器1的出料端与电子螺旋称2的进料端通过管道连接，并通过配料阀1-1进行控制，所述电子螺旋称2的出料端与旋转给料机3的进料端连接，旋转给料机3的出料端与气力输送泵5的干粉进料口通过管道连接，所述罗茨风机 4的出风口与气力输送泵5的进风加速口通过管道连接，所述气力输送泵5的加速干粉出料口与干粉喷射管6的进料口通过管道连接，并通过干粉喷射阀6-1进行控制，所述干粉喷射管6的喷射口与连续反应器10内部连通；The discharge end of the batcher 1 is connected to the feed end of the electronic screw scale 2 through a pipeline, and is controlled by a batching valve 1-1, and the discharge end of the electronic screw scale 2 is connected to the feed end of the rotary feeder 3. The material end is connected, the discharge end of the rotary feeder 3 is connected with the dry powder feed port of the pneumatic conveying pump 5 through a pipeline, and the air outlet of the Roots blower 4 is connected with the air inlet acceleration port of the pneumatic conveying pump 5 through a pipeline, The accelerated dry powder discharge port of the pneumatic conveying pump 5 is connected with the feed port of the dry powder injection pipe 6 through a pipeline, and is controlled by the dry powder injection valve 6-1. The injection port of the dry powder injection pipe 6 is connected with the continuous reactor 10 Internal connectivity;
所述连续反应器10为封闭式反应器，在连续反应器10下端设有烟气混合室10-1，烟气混合室10-1侧壁上连接有烟气通入管21，烟气混合室10-1底端设有排废管以及与之对应的混合室排废阀10-2，烟气混合室10-1上方的连续反应器内设有喷淋头24，喷淋头24的上方连续反应器侧壁设有第一进料口，所述第一进料口与干粉喷射管6的喷射口连接，所述连续反应器10位于顶部的出气端与旋风除尘器11的进气端通过管道连接，所述旋风除尘器11下端设有灰斗，灰斗的出料端与回料斗12的进料端连接，并通过灰斗卸料阀11-1进行控制，所述回料斗12的出料端与连续反应器10侧壁设置的第二进料口连接；The continuous reactor 10 is a closed reactor, and a flue gas mixing chamber 10-1 is provided at the lower end of the continuous reactor 10, and a flue gas inlet pipe 21 is connected to the side wall of the flue gas mixing chamber 10-1, and the flue gas mixing chamber The bottom end of 10-1 is provided with a waste discharge pipe and the corresponding waste discharge valve 10-2 of the mixing chamber. The continuous reactor above the flue gas mixing chamber 10-1 is provided with a spray head 24. Above the spray head 24 The side wall of the continuous reactor is provided with a first feed port, the first feed port is connected with the injection port of the dry powder injection pipe 6, and the continuous reactor 10 is positioned at the gas outlet at the top and the inlet end of the cyclone dust collector 11 Connected by a pipeline, the lower end of the cyclone dust collector 11 is provided with an ash hopper, and the discharge end of the ash hopper is connected with the feed end of the return hopper 12, and is controlled by the ash hopper discharge valve 11-1, and the return hopper 12 The discharge end of the continuous reactor 10 is connected with the second feed port that the side wall is provided with;
所述水泵23的进水端与水库22通过管道连接，水泵23的出水端与连续循环流化床内的喷淋头24通过管道连接；The water inlet end of the water pump 23 is connected with the reservoir 22 through a pipeline, and the water outlet end of the water pump 23 is connected with the spray head 24 in the continuous circulating fluidized bed through a pipeline;
所述旋风除尘器11的出气端与气固分离设备7的进气端通过管道连接，所述气固分离设备7为袋式除尘器，气固分离设备7的出气端与引风机8的入风端通过管道连接，引风机8的出风端与排烟烟囱9的进气端通过管道连接，脱硫脱硝后的烟气通过排烟烟囱进行排放。The air outlet of the cyclone dust collector 11 is connected to the air inlet of the gas-solid separation equipment 7 through a pipeline, and the gas-solid separation equipment 7 is a bag filter, and the air outlet of the gas-solid separation equipment 7 is connected to the inlet of the induced draft fan 8. The air end is connected through a pipeline, the outlet end of the induced draft fan 8 is connected with the intake end of the smoke exhaust chimney 9 through a pipeline, and the flue gas after desulfurization and denitrification is discharged through the smoke exhaust chimney.
Claims (10)
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| CN108176204A (en) * | 2017-12-26 | 2018-06-19 | 四川大学 | Flue gas and desulfurizing and denitrifying integrated purification system and purification method |
| CN111992016A (en) * | 2020-07-31 | 2020-11-27 | 哈尔滨理工大学 | A biomass boiler denitrification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108176204A (en) * | 2017-12-26 | 2018-06-19 | 四川大学 | Flue gas and desulfurizing and denitrifying integrated purification system and purification method |
| CN111992016A (en) * | 2020-07-31 | 2020-11-27 | 哈尔滨理工大学 | A biomass boiler denitrification system |
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Effective date of registration: 20220301 Address after: 101407 room 103, building 1, yard 33, Yanqi Road, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: BEIJING ZHONGSHENG XUXIN ENVIRONMENTAL ENERGY TECHNOLOGY Co.,Ltd. Address before: 610065, No. 24, south section of first ring road, Chengdu, Sichuan, Wuhou District Patentee before: SICHUAN University |