WO2018209663A1 - 一种垃圾焚烧发电厂烟气处理石灰浆喷射系统 - Google Patents

一种垃圾焚烧发电厂烟气处理石灰浆喷射系统 Download PDF

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Publication number
WO2018209663A1
WO2018209663A1 PCT/CN2017/084985 CN2017084985W WO2018209663A1 WO 2018209663 A1 WO2018209663 A1 WO 2018209663A1 CN 2017084985 W CN2017084985 W CN 2017084985W WO 2018209663 A1 WO2018209663 A1 WO 2018209663A1
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Prior art keywords
acid
lime slurry
conveying pipeline
tank
main
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PCT/CN2017/084985
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English (en)
French (fr)
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范典
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深圳市能源环保有限公司
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Priority to PCT/CN2017/084985 priority Critical patent/WO2018209663A1/zh
Publication of WO2018209663A1 publication Critical patent/WO2018209663A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes

Definitions

  • the invention relates to a waste gas treatment system for a waste power plant, in particular to a flue gas treatment lime slurry injection system for a waste incineration power plant.
  • the flue gas treatment system of waste incineration power plant mainly uses lime slurry injection in flue gas to react harmful pollutants such as SO 2 and HCL with lime slurry to ensure that the smoke emission index of the power plant meets the standard.
  • the flue gas treatment system must ensure that the lime slurry is continuously injected in sufficient quantity to achieve the smoke emission standard.
  • the lime slurry pipeline is thinner and the conveying distance is long, the lime slurry concentration is about 15%, the viscosity is very easy to hang the wall, and the pipeline is blocked; on the other hand, in order to achieve better atomization effect, the lime slurry spray gun The opening of the nozzle is very small, and the lime slurry will inevitably contain impurities and lumps which may easily cause the nozzle to clog.
  • the present invention provides a flue gas treatment lime slurry injection system for a waste incineration power plant, which comprises a clean water conveying pipeline, a lime slurry conveying pipeline, a compressed air conveying pipeline, and a clear water conveying pipeline inlet connection.
  • the inlet of the clear water tank and the lime slurry conveying pipeline is connected to the lime slurry tank, and the outlets of the clean water conveying pipeline, the lime slurry conveying pipeline and the compressed air conveying pipeline are respectively connected to the corresponding interfaces of the spray gun, and the clear water conveying pipeline inlet and the inlet
  • the lime slurry conveying pipeline inlet is connected by a bypass, and a valve is disposed in each pipeline, and is characterized in that an acid liquid flushing device is further provided, and the acid liquid flushing device includes an acid flushing pipeline and an acid liquid tank, the acid The liquid flushing line transports the acid from the acid tank to the long-distance main pulp path and the long-distance spare pulp path, and then rinses it back to the acid tank. It can effectively play the dredging pipeline, prevent the deposition of lime slurry, dissolve and condense, and ensure the smooth flow of the pipeline.
  • a flue gas treatment lime slurry injection system of a waste incineration power plant comprising a clean water conveying pipeline, a lime slurry conveying pipeline, a compressed air conveying pipeline, and a clear water conveying pipeline inlet connection.
  • the inlet of the clear water tank and the lime slurry conveying pipeline is connected to the lime slurry tank, and the outlets of the clean water conveying pipeline, the lime slurry conveying pipeline and the compressed air conveying pipeline are respectively connected to the corresponding interfaces of the spray gun, and the clear water conveying pipeline inlet and the inlet
  • the inlet of the lime slurry conveying pipeline is connected by a bypass, and a valve is arranged in each pipeline;
  • the clean water conveying pipeline comprises a main waterway and a standby waterway connected thereto, and the lime slurry conveying pipeline comprises a main pulp road and a spare pulp road connected thereto;
  • a main water pump is arranged on the main waterway, and a standby water pump is arranged on the standby waterway;
  • the clean water conveying pipeline conveys the clean water from the clean water tank to the spray gun;
  • a main slurry pump is arranged on the main pulp road, and a reserve slurry pump is arranged on the reserve slurry road, the main slurry pump passes the lime slurry from the lime slurry tank through a long distance. From the main pulp road to the spray gun, the reserve slurry pump transports the lime slurry from the lime slurry tank to the spray gun through the long distance standby pulp road;
  • an acid rinsing device comprises an acid rinsing line and an acid liquid tank, and the acid rinsing line transports the acid liquid from the acid tank to the long distance main pulp road and The long-distance spare pulp path is rinsed and then returned to the acid tank.
  • the acid flushing line comprises a main acid path and a backup acid circuit connected thereto, the main acid path includes a main acid outlet and a main acid circuit, and the standby acid path includes a backup acid outlet and a backup acid circuit.
  • the inlet of the main slurry pump is connected to the acid liquid tank through the main acid outlet, and the acid liquid is returned to the acid liquid tank through the main acid circuit after flowing through the long distance main pulp road; the inlet of the standby slurry pump passes through
  • the backup acid outlet is connected to the acid tank, and the acid liquid is returned to the acid tank through the backup acid circuit after flowing through the long distance standby slurry path.
  • a flow meter is also provided on the lime slurry delivery line at the outlet of the lime slurry tank to monitor the flow of the lime slurry.
  • the flow meter is preferably an electromagnetic flow meter.
  • an online filterable two-way filter is also provided behind the flow meter for filtering the lime slurry line.
  • a spray gun slot is further provided in the upper portion of the acid tank, and the spray gun is inserted and fixed in the spray gun socket and immersed in the acid liquid.
  • a pressure gauge is placed on the lime slurry line connected to the spray gun to monitor the pressure of the lime slurry in the pipeline.
  • a pressure gauge is provided on the compressed air line to monitor the pressure of the compressed air in the line.
  • the present invention provides a flue gas treatment lime slurry injection system for a waste incineration power plant.
  • the acid liquid flushing device includes an acid flushing line and an acid liquid tank, and an acid flushing pipeline.
  • the acid is transported from the acid tank to the long-distance main pulp path and the long-distance standby slurry path, which is then rinsed back to the acid tank. It can effectively play the function of dredging the pipeline, preventing the deposition of lime slurry, and dissolving and coagulating, ensuring the smooth flow of the pipeline.
  • Figure 1 is a schematic view of the structure of the prior art.
  • Figure 2 is a schematic view showing the structure of the first embodiment of the present invention.
  • Figure 3 is a schematic view showing the structure of a second embodiment of the present invention.
  • Figure 4 is a schematic view showing the structure of a third embodiment of the present invention.
  • Figure 5 is a schematic view showing the structure of a fourth embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of a fifth embodiment of the present invention.
  • FIG. 1 is a schematic view of the structure of the prior art.
  • the figure shows that in this example, a waste incineration power plant flue gas treatment lime slurry injection system, including clean water delivery pipeline, lime slurry conveying pipeline, compressed air delivery pipeline, clear water transportation pipeline inlet to clear water tank 1A
  • the inlet of the lime slurry conveying pipeline is connected to the lime slurry tank 2A, and the outlets of the clean water conveying pipeline, the lime slurry conveying pipeline and the compressed air conveying pipeline 3 are respectively connected to the corresponding interfaces of the spray gun 3A.
  • the figure shows that the inlet of the fresh water delivery line is connected to the inlet of the lime slurry delivery line through the bypass 4.
  • the figure shows that a valve 6 is provided in each of the lines.
  • the figure shows that the fresh water delivery pipeline comprises a main water circuit 1.1 and a backup water circuit 1.2 connected thereto, and the lime slurry conveying line comprises a main pulp path 2.1 and a spare pulp path 2.2 connected thereto.
  • the main water pump 1A is disposed on the main water passage 1.1, and the standby water pump 1.2A is disposed on the standby water passage 1.2; the clean water delivery line conveys the clean water from the clean water tank 1A to the spray gun 3A.
  • the main slurry pump 2.1A is arranged on the main pulp road 2.1; the reserve slurry pump 2.2A is arranged on the reserve slurry road 2.2; the main slurry pump 2.1A transports the lime slurry from the lime slurry tank 2A through the long distance main pulp passage 2.1B to The spray gun 3A; the reserve slurry pump 2.2A delivers the lime slurry from the lime slurry tank to the spray gun 3A via the long distance standby slurry path 2.2B.
  • the lime slurry pipeline is thin and the conveying distance is long, the lime slurry concentration is about 15%, the viscosity is very thick, and the wall is blocked easily; on the other hand, in order to achieve better atomization effect, lime
  • the nozzle opening of the slurry spray gun is very small, and the lime slurry will inevitably contain impurities and hard blocks, which may cause the spray gun to clog.
  • the blockage of the lime slurry pipeline is the most important cause of excessive lime spray and finally leading to excessive SO 2 and HCL.
  • FIG. 2 is a schematic view showing the structure of the first embodiment of the present invention.
  • the acid rinsing device includes an acid rinsing line and an acid tank 5A, and the acid rinsing line takes the acid from the acid liquid.
  • Tank 5A transported to long It is rinsed from the main pulp road 2.1B and the long distance standby pulp road 2.2B, and then returned to the acid tank 5A.
  • the diagram shows that the acid flushing line consists of a main acid circuit and a backup acid circuit connected to it.
  • the main acid path includes the main acid outlet 5.11 and the main acid circuit 5.12.
  • the backup acid circuit includes the backup acid outlet 5.21 and the backup acid circuit 5.22.
  • the inlet of the main slurry pump 2.1A is connected to the acid liquid tank 5A through the main acid outlet 5.11, and the acid liquid is returned to the acid liquid tank 5A through the main acid circuit 5.12 after flowing through the long distance main pulp passage 2.1B; the reserve slurry pump 2.2
  • the inlet of A is connected to the acid tank 5A through the standby acid outlet 5.21, and the acid liquid is returned to the acid tank 5A through the standby acid circuit 5.22 after flowing through the long distance standby slurry path 2.2B.
  • the acid solution should use a weak acid solution, preferably citric acid.
  • a lime dissolution environment can be formed inside the long distance pipeline by injecting citric acid into the lime slurry pipeline to prevent the lime slurry from coagulating deposition in the pipeline and dissolve the condensed Calcified material; after a few hours, the slurry pump is started to circulate, and the sediment can be flushed out of the pipeline to function as a pipeline.
  • FIG. 3 is a schematic view showing the structure of a second embodiment of the present invention.
  • a flow meter 2.3 is provided on the lime slurry delivery line at the outlet of the lime slurry tank 2A to monitor the flow of the lime slurry.
  • the present invention suggests that the flow meter 2.3 is preferably an electromagnetic flow meter. Install an electromagnetic flowmeter in the lime pipe pipeline to monitor the flow rate of the lime slurry at any time, and set a low flow alarm to remind the operating personnel to pay attention.
  • Figure 4 is a schematic view showing the structure of a third embodiment of the present invention. Different from the second embodiment of the present invention, the figure shows that in this example, an online filterable dual-path filter 2.4 is provided on the back of the flow meter to filter the lime slurry pipeline.
  • the double-pass filter can be cut online to remove the impurities in the lime slurry at the source to prevent the impurities from clogging the spray gun.
  • the double-channel filter can ensure that one road keeps running and the other cleans the filter to ensure the lime slurry injection system. continue to operate.
  • FIG. 5 is a schematic view showing the structure of a fourth embodiment of the present invention. Different from the third embodiment of the present invention, the figure shows that in this example, the spray gun slot 5.3 is further disposed at the upper portion of the acid tank 5, and the spray gun 3A is inserted and fixed on the spray gun slot 5.3 and immersed in the acid liquid. in.
  • the upper part of the acid tank 5 is provided with a spray gun slot.
  • the spray gun When the spray gun is used for a certain period of time, it can be placed in the spray gun slot for immersion cleaning. Because the spray gun is a high-precision device, the external force forcibly treating the surface adhesion calcification will cause mechanical damage to the spray gun. This method can effectively remove the calcified material on the spray gun, avoiding mechanical damage to the spray gun and reducing the labor intensity of the maintenance personnel.
  • FIG. 6 is a schematic view showing the structure of a fifth embodiment of the present invention. Different from the fourth embodiment of the present invention, the figure shows that in this example, a pressure gauge 3.2 is also provided on the compressed air pipeline to monitor the pressure of the compressed air, and a pressure gauge 2.5 is placed on the lime slurry pipeline connected to the spray gun. The lime slurry pressure of the pipeline is monitored. Pressure measurement points are installed on the lime pipe and compressed air pipelines, and the pressure changes of the lime slurry and the like are monitored at any time, and a high pressure alarm is set, so that the clogging of the spray gun can be predicted earlier and prevented from occurring.
  • a pressure gauge 3.2 is also provided on the compressed air pipeline to monitor the pressure of the compressed air
  • a pressure gauge 2.5 is placed on the lime slurry pipeline connected to the spray gun.
  • the lime slurry pressure of the pipeline is monitored. Pressure measurement points are installed on the lime pipe and compressed air pipelines, and the pressure changes of the lime slurry and the like are monitored at any time, and a

Abstract

一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，包括清水输送管路、石灰浆输送管路、压缩空气输送管路，清水输送管路入口接入清水罐(1A)、石灰浆输送管路入口接入石灰浆罐(2A)，清水输送管路、石灰浆输送管路及压缩空气输送管路的出口分别接入喷枪(3A)相应的接口，清水输送管路入口与石灰浆输送管路入口通过旁路(4)连通，在各个管路中设置阀门(6)，还设置酸液冲洗装置，酸液冲洗装置包括酸液冲洗管路和酸液罐(5A)，所述酸液冲洗管路将酸液从酸液罐(5A)输送到长距离主浆路(2.1B)和长距离备用浆路(2.2B)对其进行冲洗，然后又回流到酸液罐(5A)。

Description

一种垃圾焚烧发电厂烟气处理石灰浆喷射系统 技术领域
本发明涉及一种垃圾发电厂烟气处理系统，尤其涉及一种垃圾焚烧发电厂烟气处理石灰浆喷射系统。
背景技术
随着环保要求的日益提高，特别是环保部新标准GB18485-2014实施后，国家对垃圾电厂烟气污染物排放的要求更加严格。目前，垃圾焚烧发电厂烟气处理系统主要采用在烟气中进行石灰浆喷射，使SO2、HCL等有害污染物与石灰浆进行反应，保证发电厂烟气排放指标达标。烟气处理系统必须保证石灰浆连续足量喷射才能实现烟气达标排放。但因为一方面石灰浆管路较细且输送距离较长，石灰浆浓度在15％左右比较粘稠非常容易挂壁引起管路堵塞；另一方面为了实现较好的雾化效果石灰浆喷枪的喷口开孔都很小，石灰浆中难免会含有杂质、硬块容易造成喷枪堵塞。
石灰浆管道堵塞是造成石灰喷量不足最终导致烟气SO2、HCL等超标的最主要原因。
发明内容
为了解决石灰浆管道堵塞的问题，本发明提出一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，包括清水输送管路、石灰浆输送管路、压缩空气输送管路，清水输送管路入口接入清水罐、石灰浆输送管路入口接入石灰浆罐，清水输送管路、石灰浆输送管路及压缩空气输送管路的出口分别接入喷枪相应的接口，所述清水输送管路入口与石灰浆输送管路入口通过旁路连通，在各个管路中设置阀门，其特征是，还设置酸液冲洗装置，所述酸液冲洗装置包括酸液冲洗管路和酸液罐，所述酸液冲洗管路将酸液从酸液罐输送到长距离主浆路和长距离备用浆路对其进行冲洗，然后又回流到酸液罐。可以有效发挥疏通管路、防止石灰浆沉积、溶解凝结功能，确保管路畅通。
本发明解决技术问题所提出的技术方案是，一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，包括清水输送管路、石灰浆输送管路、压缩空气输送管路，清水输送管路入口接入清水罐、石灰浆输送管路入口接入石灰浆罐，清水输送管路、石灰浆输送管路及压缩空气输送管路的出口分别接入喷枪相应的接口，所述清水输送管路入口与石灰浆输送管路入口通过旁路连通，在各个管路中设置阀门；
清水输送管路包括主水路和与之并接的备用水路，石灰浆输送管路包括主浆路和与之并接的备用浆路；
在主水路上设置主水泵，在备用水路上设置备用水泵；所述清水输送管路将来自清水罐的清水输送至喷枪；
在主浆路上设置主浆泵，在备用浆路上设置备用浆泵，所述主浆泵将来自石灰浆罐的石灰浆经长距 离主浆路输送至喷枪，所述备用浆泵将来自石灰浆罐的石灰浆经长距离备用浆路输送至喷枪；
其特征是，还设置酸液冲洗装置，所述酸液冲洗装置包括酸液冲洗管路和酸液罐，所述酸液冲洗管路将酸液从酸液罐输送到长距离主浆路和长距离备用浆路对其进行冲洗，然后又回流到酸液罐。
本发明优选方案是，所述酸液冲洗管路包括主酸路和与之并接的备用酸路，主酸路包括主酸出路和主酸回路，备用酸路包括备用酸出路和备用酸回路，所述主浆泵的入口通过主酸出路接入到酸液罐，酸液在流经所述长距离主浆路之后通过主酸回路回流到酸液罐；所述备用浆泵的入口通过备用酸出路接入到酸液罐，酸液在流经所述长距离备用浆路之后通过备用酸回路回流到酸液罐。
本发明优选方案是，在石灰浆罐出口处的石灰浆输送管路上还设置流量计对石灰浆流量进行监控。
本发明优选方案是，所述流量计优选电磁流量计。
本发明优选方案是，在流量计的后面还设置可在线切换双路过滤网对石灰浆管路进行过滤。
本发明优选方案是，在酸液罐的上部还设置有喷枪插槽，所述喷枪插入固定在所述喷枪插槽上并浸泡在酸液中。
本发明优选方案是，在接入喷枪的石灰浆管路上设置压力表对管路中的石灰浆浆液压力进行监控。
本发明优选方案是，在压缩空气管路上设置压力表对管路中的压缩空气的压力进行监控。
本发明的有益效果：本发明提出一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，由于增设酸液冲洗装置，酸液冲洗装置包括酸液冲洗管路和酸液罐，酸液冲洗管路将酸液从酸液罐输送到长距离主浆路和长距离备用浆路对其进行冲洗，然后又回流到酸液罐。可以有效发挥疏通管路、防止石灰浆沉积、溶解凝结的功能，确保管路畅通。
附图说明：
图1为现有技术的结构示意图。
图2为本发明提出的第一个实施例的结构示意图。
图3为本发明提出的第二个实施例的结构示意图。
图4为本发明提出的第三个实施例的结构示意图。
图5为本发明提出的第四个实施例的结构示意图。
图6为本发明提出的第五个实施例的结构示意图。
图中，
1A清水罐，
1.1主水路、1.1A主水泵，
1.2备用水路、1.2A备用水泵，
2A石灰浆罐，
2.1主浆路、2.1A主浆泵、2.1B长距离主浆路，
2.2备用浆路、2.2A备用浆泵、2.2B长距离备用浆路，
2.3电磁流量计，
2.4双路过滤网，
2.5压力表，
3.1压缩空气管路、3A喷枪，3.2气压表，
4旁路、4.1主旁路、4.2备用旁路，
5A酸液罐、5.11主酸出路、5.12主酸回路，5.21备用酸出路、5.22备用酸回路，5.3插槽，
6阀门。
具体实施方式
图1为现有技术的结构示意图。图中显示，本例中，一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，包括清水输送管路、石灰浆输送管路、压缩空气输送管路，清水输送管路入口接入清水罐1A、石灰浆输送管路入口接入石灰浆罐2A，清水输送管路、石灰浆输送管路及压缩空气输送管路3的出口分别接入喷枪3A相应的接口。图中显示，清水输送管路入口与石灰浆输送管路入口通过旁路4连通。图中显示，在各个管路中均设置有阀门6。
图中显示，清水输送管路包括主水路1.1和与之并接的备用水路1.2，石灰浆输送管路包括主浆路2.1和与之并接的备用浆路2.2。
在主水路1.1上设置主水泵1A，在备用水路1.2上设置备用水泵1.2A；清水输送管路将来自清水罐1A的清水输送至喷枪3A。
在主浆路2.1上设置主浆泵2.1A；在备用浆路2.2上设置备用浆泵2.2A；主浆泵2.1A将来自石灰浆罐2A的石灰浆经长距离主浆路2.1B输送至喷枪3A；备用浆泵2.2A将来自石灰浆罐的石灰浆经长距离备用浆路2.2B输送至喷枪3A。
现有技术中，一方面石灰浆管路较细且输送距离较长，石灰浆浓度在15％左右比较粘稠非常容易挂壁引起管路堵塞；另一方面为了实现较好的雾化效果石灰浆喷枪的喷口开孔都很小，石灰浆中难免会含有杂质、硬块容易造成喷枪堵塞。石灰浆管道堵塞是造成石灰喷量不足最终导致烟气SO2、HCL等超标的最主要原因。
图2为本发明提出的第一个实施例的结构示意图。图中显示，本例中，在现有技术的基础上，还设置酸液冲洗装置，酸液冲洗装置包括酸液冲洗管路和酸液罐5A，酸液冲洗管路将酸液从酸液罐5A输送到长 距离主浆路2.1B和长距离备用浆路2.2B对其进行冲洗，然后又回流到酸液罐5A。
图中显示，酸液冲洗管路包括主酸路和与之并接的备用酸路，主酸路包括主酸出路5.11和主酸回路5.12，备用酸路包括备用酸出路5.21和备用酸回路5.22，主浆泵2.1A的入口通过主酸出路5.11接入到酸液罐5A，酸液在流经长距离主浆路2.1B之后通过主酸回路5.12回流到酸液罐5A；备用浆泵2.2A的入口通过备用酸出路5.21接入到酸液罐5A，酸液在流经长距离备用浆路2.2B之后通过备用酸回路5.22回流到酸液罐5A。
本发明提示，酸液应该采用弱酸液，优先柠檬酸。
在石灰浆管路处于停运或备用期间，可以通过向石灰浆管路中注入柠檬酸，在长距离管路内部形成石灰溶解环境，防止石灰浆在管路中凝结沉积，并溶解已凝结的钙化物质；数小时后启动浆泵进行循环，即可将沉淀物冲出管路，起到管路疏通的功能。
图3为本发明提出的第二个实施例的结构示意图。与本发明第一个实施例不同的是，图中显示，本例中，在石灰浆罐2A出口处的石灰浆输送管路上还设置流量计2.3对石灰浆流量进行监控。本发明提示，流量计2.3优选电磁流量计。在石灰管管路中加装电磁流量计，随时监控石灰浆流量的大小，并设置流量低报警，提醒运行人员关注。
图4为本发明提出的第三个实施例的结构示意图。与本发明第二个实施例不同的是，图中显示，本例中，在流量计的后面还设置可在线切换双路过滤网2.4对石灰浆管路进行过滤。可在线切双路换滤网，将石灰浆中杂质在源头上去除，防止杂质对喷枪造成堵塞；另外，双路滤网可以确保一路保持运行而另一路清理滤网，确保石灰浆喷射系统的连续运行。
图5为本发明提出的第四个实施例的结构示意图。与本发明第三个实施例不同的是，图中显示，本例中，在酸液罐5的上部还设置有喷枪插槽5.3，喷枪3A插入固定在喷枪插槽5.3上并浸泡在酸液中。酸液罐5的上部设置喷枪插槽，当使用过一定时间后的喷枪出现堵塞现象时可放入喷枪插槽中进行浸泡清洗。因喷枪属于高精密装置，外力强行处理表面粘附钙化物会对喷枪造成机械损伤，该方法可有效去除喷枪上的钙化物质，避免了对喷枪的机械损伤，同时减轻检修人员的劳动强度。
图6为本发明提出的第五个实施例的结构示意图。与本发明第四个实施例不同的是，图中显示，本例中，压缩空气管路上还设置压力表3.2对压缩空气的压力进行监控，在接入喷枪的石灰浆管路上设置压力表2.5对管路的石灰浆浆液压力进行监控。在石灰管管路、压缩空气管路上分别加装压力测点,随时监控石灰浆等的压力变化，并设置压力高报警，可以更早的预知喷枪的堵塞，防患于未然。

Claims (8)

  1. 一种垃圾焚烧发电厂烟气处理石灰浆喷射系统，包括清水输送管路、石灰浆输送管路、压缩空气输送管路，清水输送管路入口接入清水罐、石灰浆输送管路入口接入石灰浆罐，清水输送管路、石灰浆输送管路及压缩空气输送管路的出口分别接入喷枪相应的接口，所述清水输送管路入口与石灰浆输送管路入口通过旁路连通，在各个管路中设置阀门；
    清水输送管路包括主水路和与之并接的备用水路，石灰浆输送管路包括主浆路和与之并接的备用浆路；
    在主水路上设置主水泵，在备用水路上设置备用水泵；所述清水输送管路将来自清水罐的清水输送至喷枪；
    在主浆路上设置主浆泵，在备用浆路上设置备用浆泵，所述主浆泵将来自石灰浆罐的石灰浆经长距离主浆路输送至喷枪，所述备用浆泵将来自石灰浆罐的石灰浆经长距离备用浆路输送至喷枪；
    其特征是，还设置酸液冲洗装置，所述酸液冲洗装置包括酸液冲洗管路和酸液罐，所述酸液冲洗管路将酸液从酸液罐输送到长距离主浆路和长距离备用浆路对其进行冲洗，然后又回流到酸液罐。
  2. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，所述酸液冲洗管路包括主酸路和与之并接的备用酸路，主酸路包括主酸出路和主酸回路，备用酸路包括备用酸出路和备用酸回路，所述主浆泵的入口通过主酸出路接入到酸液罐，酸液在流经所述长距离主浆路之后通过主酸回路回流到酸液罐；所述备用浆泵的入口通过备用酸出路接入到酸液罐，酸液在流经所述长距离备用浆路之后通过备用酸回路回流到酸液罐。
  3. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，在石灰浆罐出口处的石灰浆输送管路上还设置流量计对石灰浆流量进行监控。
  4. 根据权利要求3所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，所述流量计优选电磁流量计。
  5. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，在流量计的后面还设置可在线切换双路过滤网对石灰浆管路进行过滤。
  6. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，在酸液罐的上部还设置有喷枪插槽，所述喷枪插入固定在所述喷枪插槽上并浸泡在酸液中。
  7. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，在接入喷枪的石灰浆管路上设置压力表对管路中的石灰浆浆液压力进行监控。
  8. 根据权利要求1所述的垃圾焚烧发电厂烟气处理石灰浆喷射系统，其特征是，在压缩空气管路上 设置压力表对管路中压缩空气的压力进行监控。
PCT/CN2017/084985 2017-05-19 2017-05-19 一种垃圾焚烧发电厂烟气处理石灰浆喷射系统 WO2018209663A1 (zh)

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