CN208145761U - A kind of in-furnace calcium spraying dry method desulfuration system - Google Patents
A kind of in-furnace calcium spraying dry method desulfuration system Download PDFInfo
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- CN208145761U CN208145761U CN201820267067.5U CN201820267067U CN208145761U CN 208145761 U CN208145761 U CN 208145761U CN 201820267067 U CN201820267067 U CN 201820267067U CN 208145761 U CN208145761 U CN 208145761U
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 34
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 14
- 239000011575 calcium Substances 0.000 title claims abstract description 14
- 238000005507 spraying Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title description 16
- 230000023556 desulfurization Effects 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 24
- 235000019738 Limestone Nutrition 0.000 claims abstract description 21
- 239000006028 limestone Substances 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 239000000843 powder Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
一种炉内喷钙干法脱硫系统，属于锅炉烟气脱硫治理技术领域。包括石灰石料仓，变频式螺旋计量输送机，罗茨风机和锅炉，所述的石灰石料仓的下料口与变频式螺旋计量输送机的进料口连通，并且位于石灰石料仓与变频式螺旋计量输送机之间设有电动插板门，变频式螺旋计量输送机的出料口正对于中间缓冲仓的进口，中间缓冲仓的出口通过旋转密封给料阀与喷射式供料器连通，所述的喷射式供料器同时也连通着罗茨风机和管路分配器连通，管路分配器通过管路与喷嘴连通喷嘴镶嵌固定在锅炉壁上。采用防堵设计，解决了系统堵塞问题。又采用了耐磨材质延长了设备使用寿命，同时具有投资小，占地小，提高了脱硫效率。
The invention relates to a calcium spraying dry desulfurization system in a furnace, which belongs to the technical field of boiler flue gas desulfurization treatment. It includes a limestone silo, a variable frequency screw metering conveyor, a Roots blower and a boiler. There is an electric sliding door between the metering conveyors. The outlet of the variable frequency screw metering conveyor is directly facing the inlet of the intermediate buffer bin. The outlet of the intermediate buffer bin is connected with the jet feeder through a rotary sealed feed valve. The jet feeder mentioned above is also connected with the Roots blower and the pipeline distributor, and the pipeline distributor communicates with the nozzle through the pipeline and the nozzle is embedded and fixed on the boiler wall. The anti-blocking design is adopted to solve the problem of system blockage. The use of wear-resistant materials prolongs the service life of the equipment, and at the same time has the advantages of small investment, small footprint, and improved desulfurization efficiency.
Description
技术领域technical field
本实用新型属于锅炉烟气脱硫治理技术领域，具体涉及到一种炉内喷钙干法脱硫系统。The utility model belongs to the technical field of boiler flue gas desulfurization treatment, and in particular relates to a calcium spraying dry desulfurization system in a furnace.
背景技术Background technique
目前国内外烟气脱硫技术发展很快，得到商业应用的烟气脱硫技术有几十种，按脱硫剂及脱硫反应产物的状态主要有湿法、干法脱硫等技术，各有优缺点。At present, flue gas desulfurization technology at home and abroad is developing rapidly. There are dozens of flue gas desulfurization technologies that have been commercially applied. According to the state of desulfurizers and desulfurization reaction products, there are mainly wet and dry desulfurization technologies, each with its own advantages and disadvantages.
常用的湿法脱硫工艺装置主要是用水制备碱性脱硫剂溶液喷淋到脱硫塔内进行烟气脱硫。湿法脱硫工艺装置主要有:石灰石/石灰-石膏法、海水法、双碱法、亚钠循环法、氧化镁法等。湿法脱硫工艺装置主要优点是脱硫效率高，脱硫效率可达99%以上，操作维护简单，主要缺点是一次性投资高、占地面积大，运行成本高，耗水量大，脱硫渣需要脱水处理等。常用的干法烟气脱硫装置有炉内喷钙法、活性碳吸附法、电子束辐射法、荷电干式吸收剂喷射法、金属氧化物脱硫法等。缺点是一般反应速度慢，脱硫率低，尤其干法脱硫装置普遍存在系统堵塞磨损问题，设备运行的稳定性、可靠性不高，且寿命较短，限制了此种方法的应用。The commonly used wet desulfurization process device is mainly to prepare alkaline desulfurizer solution with water and spray it into the desulfurization tower for flue gas desulfurization. Wet desulfurization process devices mainly include: limestone/lime-gypsum method, seawater method, double alkali method, sodium nitrite cycle method, magnesium oxide method, etc. The main advantages of the wet desulfurization process device are high desulfurization efficiency, the desulfurization efficiency can reach more than 99%, and the operation and maintenance are simple. The main disadvantages are high one-time investment, large floor area, high operating cost, and large water consumption. Desulfurization residue needs to be dehydrated. Wait. Commonly used dry flue gas desulfurization devices include furnace calcium spraying method, activated carbon adsorption method, electron beam radiation method, charged dry absorbent injection method, metal oxide desulfurization method, etc. The disadvantages are that the general reaction speed is slow and the desulfurization rate is low, especially the dry desulfurization device generally has the problem of system blockage and wear, the stability and reliability of the equipment operation are not high, and the service life is short, which limits the application of this method.
发明内容Contents of the invention
本实用新型目的提供一种炉内喷钙干法脱硫系统，适用于电厂循环流化床锅炉排放烟气的干法脱硫治理，解决现有技术问题的不足。The purpose of the utility model is to provide a calcium spraying dry desulfurization system in the furnace, which is suitable for the dry desulfurization treatment of flue gas discharged from circulating fluidized bed boilers in power plants, and solves the shortcomings of the existing technical problems.
本实用新型是通过以下方式实现的一种炉内喷钙干法脱硫系统，包括石灰石料仓，变频式螺旋计量输送机，罗茨风机和锅炉。所述的石灰石料仓的下料口与变频式螺旋计量输送机的进料口连通，并且位于石灰石料仓与变频式螺旋计量输送机之间设有电动插板门。变频式螺旋计量输送机的出料口正对于中间缓冲仓的进口，中间缓冲仓的出口通过旋转密封给料阀与喷射式供料器连通，其中在喷射式供料器前设置中间缓冲仓和旋转密封给料阀是避免罗茨风机高压送风对之前石灰石料仓、变频式螺旋计量输送机、电动插板门串风造成物料泄露，同时利用变频式螺旋计量输送机控制给料量采用等容积挤压式给料，下料均匀，计量准确。所述的喷射式供料器同时也连通着罗茨风机和管路分配器连通，管路分配器通过管路与喷嘴连通喷嘴镶嵌固定在锅炉壁上。罗茨风机带动旋转密封给料阀的物料，进入喷射式供料器，将物料输送到管路分配器中。采用罗茨风机喷射物料在于风量大物料小，形成稀相喷射可保证物料连续输送不堵塞。The utility model is a calcium spraying dry desulfurization system in a furnace realized in the following manner, including a limestone silo, a frequency-variable screw metering conveyor, a Roots blower and a boiler. The discharge port of the limestone silo communicates with the feed port of the variable-frequency screw metering conveyor, and an electric gate is provided between the limestone silo and the variable-frequency screw metering conveyor. The outlet of the variable-frequency screw metering conveyor is directly facing the inlet of the intermediate buffer bin, and the outlet of the intermediate buffer bin is connected with the jet feeder through a rotary sealing feed valve, and the intermediate buffer bin and the jet feeder are set in front of the jet feeder. The rotary sealing feed valve is to avoid the leakage of materials caused by the high-pressure air supply of the Roots blower to the previous limestone silo, frequency-variable screw metering conveyor, and electric gate. Volume extrusion feeding, uniform feeding, accurate measurement. The jet feeder is also connected with the Roots blower and the pipeline distributor, and the pipeline distributor communicates with the nozzle through the pipeline and the nozzle is embedded and fixed on the boiler wall. The Roots blower drives the material from the rotary sealing feed valve, enters the jet feeder, and transports the material to the pipeline distributor. The Roots blower is used to spray the material because the air volume is large and the material is small, and the formation of dilute phase injection can ensure the continuous conveying of the material without clogging.
所述的喷射式供料器上端设有进料口，其内部设有与进料口相配合的下挡板和上挡板，所述的上挡板通过可调连接件安装在内壁上，上挡板角度可调对物料的流量进行控制。喷射式供料器的左端设有进风嘴，进风嘴的下端为锥形，并且出风口位于上挡板与下挡板之间的下方，使其在送风状态下产生负压区,物料被气流抽进炉膛,因而避免物料的堵塞。另外，在进风嘴处增加了补风装置，以防止系统供风不足的情况下，及时补充压缩空气，保证系统的正常运行。喷射式供料器的右端设有出料口。喷射式供料器主要是将石灰石粉处理成为松散、悬浮状，石灰石粉进入喷射式供料器时，在罗茨风机供给的高压风作用下被吹散并快速向前流动，经过一段管径的变化，使散状物料喷出的力度加大，由出口喷出。The upper end of the spray feeder is provided with a feed inlet, and a lower baffle and an upper baffle matching the feed inlet are arranged inside, and the upper baffle is installed on the inner wall through an adjustable connector. The angle of the upper baffle can be adjusted to control the flow of materials. The left end of the jet feeder is provided with an air inlet nozzle, the lower end of the air inlet nozzle is conical, and the air outlet is located below the upper baffle and the lower baffle, so that it generates a negative pressure area in the air supply state. The material is drawn into the furnace by the air flow, thus avoiding the blockage of the material. In addition, a supplementary air device is added to the air inlet to prevent the system from insufficient air supply, and to replenish compressed air in time to ensure the normal operation of the system. The right end of the jet feeder is provided with a discharge port. The jet feeder mainly treats the limestone powder into a loose and suspended state. When the limestone powder enters the jet feeder, it is blown away by the high-pressure wind supplied by the Roots blower and flows forward quickly, passing through a section of pipe diameter. The change of the size increases the force of the ejection of the bulk material, and it is ejected from the outlet.
管路分配器的下端设有锥形的上料口，物料从管路分配器的下部进入，管路分配器内部的顶部为球面型，管路分配器的四周平均布置着四个分支管，此结构能保证物料均匀的分配到各个支管中，保证物料能均匀的分配到各个管路中，同时管路分配器采用耐磨材料制成，增加管路分配器的使用寿命。The lower end of the pipeline distributor is provided with a tapered feeding port. The material enters from the lower part of the pipeline distributor. The top of the pipeline distributor is spherical, and four branch pipes are evenly arranged around the pipeline distributor. This structure can ensure that the material is evenly distributed to each branch pipe, and ensure that the material can be evenly distributed to each pipeline. At the same time, the pipeline distributor is made of wear-resistant materials to increase the service life of the pipeline distributor.
所述的喷嘴优选采用耐高温和耐磨材质，其个数为2个，其中一个喷嘴固定安装在锅炉高度的2/5处，另一个喷嘴固定安装在锅炉高度的3/5处。The nozzles are preferably made of high-temperature-resistant and wear-resistant materials, and the number is 2. One nozzle is fixedly installed at 2/5 of the boiler height, and the other nozzle is fixedly installed at 3/5 of the boiler height.
所述的喷射式供料器优选采用耐磨材质。The jet feeder is preferably made of wear-resistant material.
本实用新型的有益效果为构造设计合理，对整套系统进行合理布置，采用防堵设计，解决了系统堵塞问题。又采用了耐磨材质延长了设备使用寿命，同时具有投资小，占地小，提高了脱硫效率。The beneficial effect of the utility model is that the structural design is reasonable, the entire system is reasonably arranged, and the anti-blocking design is adopted to solve the problem of system blockage. The use of wear-resistant materials prolongs the service life of the equipment, and at the same time has the advantages of small investment, small footprint, and improved desulfurization efficiency.
附图说明Description of drawings
图1为整体系统示意图；Figure 1 is a schematic diagram of the overall system;
图2为喷射式供料器结构图；Figure 2 is a structural diagram of the jet feeder;
图3为管路分配器结构图；Figure 3 is a structural diagram of the pipeline distributor;
如图1至图3所述，石灰石料仓（1），电动插板门（2），变频式螺旋计量输送机（3），中间缓冲仓（4），旋转密封给料阀（5），喷射式供料器（6），罗茨风机（7），管路分配器（8），喷嘴（9），锅炉（10），进料口（11），上挡板（12），下挡板（13），进风嘴（14），出料口（15），上料口（16），支管（17），凸端（18）。As shown in Figure 1 to Figure 3, limestone silo (1), electric gate (2), frequency conversion screw metering conveyor (3), intermediate buffer bin (4), rotary sealing feed valve (5), Jet feeder (6), Roots blower (7), pipeline distributor (8), nozzle (9), boiler (10), feed inlet (11), upper baffle (12), lower baffle Plate (13), air inlet nozzle (14), discharge port (15), feed port (16), branch pipe (17), convex end (18).
具体实施方式Detailed ways
一种炉内喷钙干法脱硫系统，包括石灰石料仓1，电动插板门2，变频式螺旋计量输送机3，中间缓冲仓4，旋转密封给料阀5，喷射式供料器6，罗茨风机7，管路分配器8，喷嘴9，锅炉10。石灰石料仓1通过电动插板门2和管道与变频式螺旋计量输送机3连通，变频式螺旋计量输送机3的出料口与中间缓冲仓4的进料口正对连通，中间缓冲仓4的下料口通过旋转密封给料阀5与喷射式供料器6的进料口11连通，喷射式供料器6内部设有与进料口11相配合的下挡板13和上挡板12，所述的上挡板12通过可调连接件安装在内壁上，上挡板12角度可调对物料的流量进行控制。喷射式供料器6的左端设有进风嘴14，进风嘴14的下端为锥形，并且出风口位于上挡板12与下挡板13之间的下方。罗茨风机7通过进风嘴14与喷射式供料器6连通，喷射式供料器6的出料口15与管路分配器8的上料口16连通，管路分配器8内部的顶部为球面型的凸端18，管路分配器8上的支管17与喷嘴9连通，喷嘴9固定在锅炉10上。A calcium spraying dry desulfurization system in a furnace, including a limestone silo 1, an electric sliding door 2, a variable frequency screw metering conveyor 3, an intermediate buffer bin 4, a rotary sealing feed valve 5, a jet feeder 6, Roots blower 7, pipeline distributor 8, nozzle 9, boiler 10. The limestone silo 1 communicates with the variable frequency screw metering conveyor 3 through the electric sliding door 2 and the pipeline. The feeding port of the feeder is communicated with the feed port 11 of the jet feeder 6 through the rotary sealing feed valve 5, and the jet feeder 6 is provided with a lower baffle plate 13 and an upper baffle plate matched with the feed port 11. 12. The upper baffle 12 is installed on the inner wall through an adjustable connector, and the angle of the upper baffle 12 can be adjusted to control the flow of materials. The left end of the jet feeder 6 is provided with an air inlet nozzle 14 , the lower end of the air inlet nozzle 14 is tapered, and the air outlet is located below between the upper baffle 12 and the lower baffle 13 . The Roots blower 7 communicates with the jet feeder 6 through the air inlet nozzle 14, the outlet 15 of the jet feeder 6 communicates with the feeding port 16 of the pipeline distributor 8, and the top of the pipeline distributor 8 It is a spherical convex end 18 , and the branch pipe 17 on the pipeline distributor 8 communicates with the nozzle 9 , and the nozzle 9 is fixed on the boiler 10 .
喷嘴9的个数为2个，其中一个喷嘴9固定安装在锅炉10高度的2/5处，另一个喷嘴9固定安装在锅炉10高度的3/5处。The number of nozzles 9 is 2, wherein one nozzle 9 is fixedly installed at 2/5 of the height of the boiler 10 , and the other nozzle 9 is fixedly installed at 3/5 of the height of the boiler 10 .
所述的喷射式供料器6采用耐磨材质。The jet feeder 6 is made of wear-resistant material.
所述的管路分配器8采用耐磨材质。The pipeline distributor 8 is made of wear-resistant material.
所述的喷嘴9采用耐高温和耐磨材质。The nozzle 9 is made of high-temperature-resistant and wear-resistant materials.
石灰石粉由石灰石料仓1，流经电动插板门2，然后通过变频螺旋计量输送机3将石灰石送入中间缓冲仓4，随后落入旋转密封给料阀5内，并均匀的将实际需要的石灰石粉输送到喷射式供料器6中，石灰石粉被罗茨风机7供给的风吹送前进，经过管路分配器8及喷嘴9最后进入锅炉10中，石灰石粉在炉膛内与燃煤在燃烧过程中产生的SO2 发生反应完成一次输送过程。螺旋计量给料机3由变频器控制转速，进而控制石灰石量的大小。Limestone powder flows from the limestone silo 1 through the electric gate 2, and then the limestone is sent to the intermediate buffer silo 4 by the frequency-variable screw metering conveyor 3, and then falls into the rotary sealed feeding valve 5, and the actual demand is evenly distributed. The limestone powder is delivered to the jet feeder 6, the limestone powder is blown forward by the wind supplied by the Roots blower 7, passes through the pipeline distributor 8 and the nozzle 9, and finally enters the boiler 10, and the limestone powder is mixed with the coal in the furnace. The SO2 produced in the combustion process reacts to complete a transport process. The speed of the screw metering feeder 3 is controlled by a frequency converter, and then the amount of limestone is controlled.
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| CN111036049A (en) * | 2019-12-30 | 2020-04-21 | 江苏翱翔环保能源有限公司 | An energy-saving flue desulfurization device |
| CN113694832A (en) * | 2021-08-09 | 2021-11-26 | 嘉兴石化有限公司 | Ejector for feeding of PTA oxidation reactor |
| CN117619133A (en) * | 2024-01-25 | 2024-03-01 | 山东力净环保科技有限公司 | Desulfurizing agent injection apparatus for flue desulfurization |
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| CN109798514A (en) * | 2019-01-31 | 2019-05-24 | 云南农业大学 | A kind of resistive connection slag biomass combustion furnace spray apparatus for ash and biomass combustion furnace |
| CN111036049A (en) * | 2019-12-30 | 2020-04-21 | 江苏翱翔环保能源有限公司 | An energy-saving flue desulfurization device |
| CN113694832A (en) * | 2021-08-09 | 2021-11-26 | 嘉兴石化有限公司 | Ejector for feeding of PTA oxidation reactor |
| CN117619133A (en) * | 2024-01-25 | 2024-03-01 | 山东力净环保科技有限公司 | Desulfurizing agent injection apparatus for flue desulfurization |
| CN117619133B (en) * | 2024-01-25 | 2024-04-26 | 山东力净环保科技有限公司 | Desulfurizing agent injection apparatus for flue desulfurization |
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Denomination of utility model: A dry desulfurization system with calcium injection in the furnace Effective date of registration: 20221212 Granted publication date: 20181127 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2022980026415 |
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Denomination of utility model: A Dry Desulfurization System with Calcium Injection in the Furnace Granted publication date: 20181127 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2024980001872 |
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Denomination of utility model: A furnace calcium injection dry desulfurization system Granted publication date: 20181127 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN BEST ENVIRONMENT EQUIPMENT Co.,Ltd. Registration number: Y2025980001599 |
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