CN204170623U - Ship Power Equipment integrated form waste gas washing desulphurization equipment - Google Patents
Ship Power Equipment integrated form waste gas washing desulphurization equipment Download PDFInfo
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- CN204170623U CN204170623U CN201420613663.6U CN201420613663U CN204170623U CN 204170623 U CN204170623 U CN 204170623U CN 201420613663 U CN201420613663 U CN 201420613663U CN 204170623 U CN204170623 U CN 204170623U
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- 238000005406 washing Methods 0.000 title claims abstract description 45
- 239000002912 waste gas Substances 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 95
- 238000005507 spraying Methods 0.000 claims description 5
- 239000003570 air Substances 0.000 claims 1
- 239000012080 ambient air Substances 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 abstract description 26
- 239000011593 sulfur Substances 0.000 abstract description 26
- 238000005201 scrubbing Methods 0.000 abstract description 25
- 239000000295 fuel oil Substances 0.000 abstract description 22
- 238000006477 desulfuration reaction Methods 0.000 abstract description 20
- 230000023556 desulfurization Effects 0.000 abstract description 20
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 17
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
Abstract
本实用新型提供的是一种船舶动力装置集成式废气洗涤脱硫设备。用于处理所有燃用低质高硫重油的动力装置产生的废气，包括废气洗涤管路、三通阀、废气稳压箱、废气洗涤塔。船舶动力装置的废气通过三通阀连入废气稳压器，经稳压后进入废气洗涤塔，进行洗涤脱硫。采用本实用新型可减少船舶动力装置排气波动所造成的相互干扰，降低整个洗涤系统负荷和能量消耗，并且可使船舶废气排放符合IMO有关船舶燃油硫含量的标准。
The utility model provides an integrated waste gas washing and desulfurization equipment of a marine power plant. It is used to treat the exhaust gas generated by all power plants burning low-quality high-sulfur heavy oil, including exhaust gas scrubbing pipeline, three-way valve, exhaust gas stabilizing tank, and exhaust gas scrubber. The exhaust gas from the ship's power plant is connected to the exhaust gas regulator through the three-way valve, and after the pressure is stabilized, it enters the exhaust gas scrubber for washing and desulfurization. The utility model can reduce the mutual interference caused by the exhaust fluctuation of the ship's power plant, reduce the load and energy consumption of the whole washing system, and make the ship's exhaust gas discharge comply with the IMO standard on the sulfur content of the ship's fuel oil.
Description
技术领域technical field
本实用新型涉及的是一种废气洗涤脱硫设备，具体地说是燃用低质高硫重油的船舶的废气洗涤脱硫设备。The utility model relates to exhaust gas washing and desulfurization equipment, in particular to exhaust gas washing and desulfurization equipment for ships burning low-quality high-sulfur heavy oil.
背景技术Background technique
随着国际航运业及远洋运输业的发展，船舶所产生的废气排放己成为沿海地区尤其是港口大气的主要污染源。船舶动力装置所使用的燃料为高粘度、高含硫量、高残碳的低质重油，其燃烧产生的气态排放物中，SOx占有很大比重，是造成海洋和港口大气污染的主要气体成分之一。With the development of the international shipping industry and ocean transportation industry, exhaust gas emissions from ships have become the main source of air pollution in coastal areas, especially in ports. The fuel used in ship power plants is low-quality heavy oil with high viscosity, high sulfur content, and high carbon residue. Among the gaseous emissions produced by its combustion, SOx occupies a large proportion and is the main gas component that causes air pollution in oceans and ports. one.
为了限制船舶排气污染，2008年国际海事组织(IMO)第58届海洋环境保护委员会批准了MARPOL73/78公约附则VI修正案，规定，2012年1月1日后，在公海中行驶的远洋船舶，其燃油硫含量必须低于3.5％，2020年1月1日后，全球区域燃油硫含量低于0.5％；但是在排放控制海域，2010年7月1日后，燃油硫含量需低于1％，2015年1月1日后，硫含量需低于0.1％；IMO还规定，除了使用低硫燃油外，船舶也可采用经认可的废气清洗系统或其它技术降低船舶动力装置排放的SOx，使之相当于对应含硫量燃油的排放。In order to limit ship exhaust pollution, the 58th Marine Environmental Protection Committee of the International Maritime Organization (IMO) approved the amendment to Annex VI of the MARPOL73/78 Convention in 2008. The sulfur content of fuel oil must be less than 3.5%. After January 1, 2020, the sulfur content of fuel oil in the global region must be less than 0.5%. However, after July 1, 2010, the sulfur content of fuel oil must be less than 1%. After January 1, 2011, the sulfur content must be less than 0.1%. IMO also stipulates that in addition to using low-sulfur fuel oil, ships can also use approved exhaust gas cleaning systems or other technologies to reduce SOx emissions from ship power plants, making them equivalent to Emissions corresponding to fuel oil with sulfur content.
选用低硫燃料是从源头上解决船舶排气中SOx含量超标的根本措施，但由于低硫燃油在炼制过程中需经过额外的脱硫过程，价格远高于传统重油，大大增加了船舶运营成本，且低硫燃油精炼过程中会产生大量的CO2。使用低硫燃油与高硫燃油切换系统，涉及船舶主机、船舶辅机和燃油锅炉等，需增加柴油机、锅炉的燃油转换装置，并对供油系统、燃烧装置、监控和显示系统等进行改造，并有可能需在发动机燃油系统上加设冷却器。此外，在高、低硫燃油切换过程中会产生诸如安全等较多的附加问题。The selection of low-sulfur fuel is the fundamental measure to solve the excessive SOx content in ship exhaust from the source. However, since low-sulfur fuel oil needs to go through an additional desulfurization process in the refining process, the price is much higher than traditional heavy oil, which greatly increases the operating cost of ships. , and a large amount of CO 2 will be produced in the refining process of low sulfur fuel oil. The use of low-sulfur fuel oil and high-sulfur fuel oil switching system involves ship main engine, ship auxiliary engine and oil-fired boiler, etc. It is necessary to add fuel oil conversion devices for diesel engines and boilers, and to modify the oil supply system, combustion device, monitoring and display system, etc. And it may be necessary to add a cooler to the engine fuel system. In addition, many additional problems such as safety will arise during the switching process of high and low sulfur fuel oil.
鉴于IMO对于燃油硫含量要求的日益严格，研制新型高效的脱硫设备，特别是能与现有船舶动力装置配套的洗涤设备，是解决当前及未来远洋船舶自由进出世界各海域，推动我国企业走向世界不可缺少的重要措施。In view of the increasingly stringent requirements of IMO on the sulfur content of fuel oil, the development of new and efficient desulfurization equipment, especially the washing equipment that can be matched with the existing ship power plant, is the solution to the current and future ocean-going ships to freely enter and leave the world's seas, and promote Chinese enterprises to go global Indispensable and important measures.
发明内容Contents of the invention
本实用新型的目的在于提供一种能够减少船舶燃油费用和运营成本，并且压降较低的船舶动力装置集成式废气洗涤脱硫设备。The purpose of the utility model is to provide an integrated exhaust gas washing and desulfurization equipment for ship power devices which can reduce ship fuel costs and operating costs and has low pressure drop.
本实用新型的目的是这样实现的：The purpose of this utility model is achieved in that:
船舶主柴油机、船舶辅助柴油机、船舶燃油锅炉的排气管上各连接三通阀，每个三通阀的一路通过废气洗涤管路连通到废气稳压箱，每个三通阀的另一路通过废气旁通管路直接连通到环境大气，废气稳压箱连接废气洗涤装置。Three-way valves are connected to the exhaust pipes of the ship's main diesel engine, ship's auxiliary diesel engine, and ship's oil-fired boiler. One way of each three-way valve is connected to the exhaust gas pressure stabilization tank through the exhaust gas washing pipeline, and the other way of each three-way valve is The exhaust gas bypass pipeline is directly connected to the ambient atmosphere, and the exhaust gas pressure tank is connected to the exhaust gas scrubbing device.
所述废气洗涤装置内从下到上包括预喷淋层、喷淋层和除雾器，进气口位于底部，出气口位于顶部。The exhaust gas scrubbing device includes a pre-spray layer, a spray layer and a demister from bottom to top, the air inlet is located at the bottom, and the air outlet is located at the top.
所述喷淋层为一级或多级喷淋层。The spray layer is one-stage or multi-stage spray layer.
本实用新型提供的船舶动力装置高效低阻力集成式废气洗涤脱硫设备，船舶主柴油机、船舶辅助柴油机、船舶燃油锅炉的废气经排气管流向三通阀，三通阀一路通过废气洗涤管路连通到废气稳压箱、另一路通过废气旁通管路直接连通到环境大气；船舶各动力装置的废气在废气稳压箱汇集，再通入废气洗涤装置。The utility model provides high-efficiency and low-resistance integrated exhaust gas washing and desulfurization equipment for marine power devices. The exhaust gas of the main diesel engine of the ship, the auxiliary diesel engine of the ship, and the oil-fired boiler of the ship flows to the three-way valve through the exhaust pipe, and the three-way valve is connected through the exhaust gas washing pipeline. The exhaust gas from each power unit of the ship is collected in the exhaust gas stabilization tank, and then passed into the exhaust gas scrubber.
本实用新型的废气洗涤装置采用逆流式，废气从下向上流动，洗涤液从上向下喷淋，整个洗涤装置从下到上包括预喷淋层、喷淋层和除雾器。The exhaust gas washing device of the utility model adopts a counter-flow type, the exhaust gas flows from bottom to top, the washing liquid is sprayed from top to bottom, and the whole washing device includes a pre-spray layer, a spray layer and a demister from bottom to top.
根据运行区域和航线，所述的船舶动力装置高效低阻力集成式废气洗涤脱硫设备运行模式分为非洗涤模式和洗涤模式。According to the operating area and route, the operating modes of the high-efficiency and low-resistance integrated exhaust gas scrubbing and desulfurization equipment for ship power plants are divided into non-scrubbing mode and scrubbing mode.
当船舶航行在非硫排放控制区域和非港口区域时，废气洗涤脱硫设备运行在非洗涤模式，三通阀直接连通排气管和废气旁通管路，动力装置燃烧产生的废气直接排入环境大气。When the ship sails in the non-sulfur emission control area and non-port area, the exhaust gas scrubber and desulfurization equipment operates in the non-scrubbing mode, the three-way valve is directly connected to the exhaust pipe and the exhaust gas bypass pipeline, and the exhaust gas generated by the combustion of the power plant is directly discharged into the environment atmosphere.
当船舶航行在硫排放控制区域或港口区域时，废气洗涤脱硫设备运行在洗涤模式，三通阀连通排气管和废气洗涤管路，动力装置燃烧产生的废气排入废气稳压箱，经稳压后，进入废气洗涤装置洗涤脱除SOx和颗粒，再经除雾后，排入环境大气。When the ship is sailing in the sulfur emission control area or the port area, the exhaust gas scrubbing and desulfurization equipment operates in the scrubbing mode, the three-way valve connects the exhaust pipe and the exhaust gas scrubbing pipeline, and the exhaust gas generated by the combustion of the power plant is discharged into the exhaust gas stabilizing tank. After being compressed, it enters the exhaust gas scrubber to wash and remove SOx and particles, and after demisting, it is discharged into the ambient atmosphere.
当废气洗涤装置维修或出现故障时，通过调整动力装置排气管上的三通阀通路，旁通动力装置燃烧产生的废气，直接经废气旁通管路排入环境大气。When the exhaust gas scrubber is repaired or fails, by adjusting the three-way valve passage on the exhaust pipe of the power unit, the exhaust gas generated by the combustion of the power unit is bypassed, and it is directly discharged into the ambient atmosphere through the exhaust gas bypass pipeline.
当船舶使用的燃油硫含量较低时，只需洗涤部分废气即可达到IMO排放要求，此时对船舶柴油机排气采用废气分流洗涤技术，即根据燃油硫含量和船舶航行海域排放控制要求，通过三通阀控制分流部分废气，进行洗涤，处理后废气与其余未经洗涤的废气混合，使混合气符合当前航行海域排放要求，减少整个洗涤系统负荷和能量消耗。When the sulfur content of the fuel oil used by the ship is low, only part of the exhaust gas can be washed to meet the IMO emission requirements. At this time, the exhaust gas shunt washing technology is adopted for the exhaust gas of the marine diesel engine, that is, according to the sulfur content of the fuel oil and the emission control requirements of the ship's sea area. The three-way valve controls the diversion of part of the exhaust gas for washing, and the treated exhaust gas is mixed with the rest of the unwashed exhaust gas to make the mixed gas meet the discharge requirements of the current sailing sea area and reduce the load and energy consumption of the entire washing system.
动力装置工况变化时，排放的废气量和废气温度都发生变化，通过调整预洗涤和洗涤喷淋量，使洗涤废气达到规定的洗涤要求。When the working condition of the power plant changes, the amount of exhaust gas and the temperature of the exhaust gas will change. By adjusting the amount of pre-washing and washing spray, the scrubbing exhaust gas will meet the specified washing requirements.
上述船舶动力装置高效低阻力集成式废气洗涤脱硫设备，废气稳压器用于均衡各动力装置废气的压力，使废气洗涤装置进口压力均匀，避免由于动力装置排气压力波动相互干扰造成废气洗涤装置背压过度增大。The high-efficiency and low-resistance integrated exhaust gas scrubbing and desulfurization equipment of the above-mentioned ship power plant, the exhaust gas regulator is used to balance the pressure of the exhaust gas of each power plant, so that the inlet pressure of the exhaust gas scrubber is uniform, and avoid the backlash of the exhaust gas scrubber due to the mutual interference of the exhaust pressure fluctuation of the power plant. Excessive increase in pressure.
上述废气洗涤装置，根据船舶同时运行的动力装置的废气量总和的最大量确定最大设计废气处理量。For the exhaust gas scrubbing device, the maximum designed exhaust gas treatment capacity is determined according to the maximum sum of the exhaust gas volumes of the power units running at the same time on the ship.
本实用新型的优势在于：The utility model has the advantages of:
1.涵盖了船舶上所有使用低质高硫重油的设备，将所有设备的废气集中于一个装置中处理，降低了洗涤脱硫设备的体积和重量，减少了洗涤脱硫装置的投资和运行成本。1. It covers all the equipment on the ship that uses low-quality high-sulfur heavy oil, and concentrates the exhaust gas of all equipment in one device for treatment, which reduces the volume and weight of the scrubbing and desulfurization equipment, and reduces the investment and operating costs of the scrubbing and desulfurization device.
2.采用废气稳压技术，减少了由于船舶动力装置排气波动所造成的相互干扰，减少了洗涤脱硫装置的压降和对动力装置的影响。2. The exhaust gas pressure stabilization technology is used to reduce the mutual interference caused by the exhaust fluctuation of the ship's power plant, and reduce the pressure drop of the washing desulfurization device and the impact on the power plant.
3.采用废气旁通技术，保证了废气洗涤脱硫装置运行的安全性。3. The exhaust gas bypass technology is adopted to ensure the safety of the operation of the exhaust gas scrubbing and desulfurization device.
4.采用废气分流洗涤技术，使处理后的排放废气满足船舶航行海域排放要求，减少了整个洗涤系统负荷和能量消耗。4. The waste gas shunt washing technology is adopted to make the treated exhaust gas meet the discharge requirements of the ship's sea area, reducing the load and energy consumption of the entire washing system.
附图说明Description of drawings
图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
具体实施方式Detailed ways
下面结合附图对本实用新型做详细描述：Below in conjunction with accompanying drawing, the utility model is described in detail:
船舶主柴油机1、船舶辅助柴油机2、船舶燃油锅炉3的废气经各自排气管A流向三通阀4，三通阀4一路通过废气洗涤管路B连通废气稳压箱5，另一路通过废气旁通管路C直接连通环境大气；船舶上燃用高硫重油的废气在废气稳压箱5汇集，再通入废气洗涤装置6。Exhaust gas from the ship's main diesel engine 1, ship auxiliary diesel engine 2, and ship oil-fired boiler 3 flows to the three-way valve 4 through their respective exhaust pipes A. The bypass pipeline C is directly connected to the ambient atmosphere; the waste gas from burning high-sulfur heavy oil on ships is collected in the waste gas surge tank 5 and then passed into the waste gas scrubbing device 6 .
废气洗涤装置6采用逆流式，废气从下向上流动，洗涤液从上向下喷淋，整个洗涤装置从下到上包括预喷淋层7、喷淋层8和除雾器9。The exhaust gas washing device 6 adopts a counter-flow type, the exhaust gas flows from bottom to top, and the washing liquid is sprayed from top to bottom. The whole washing device includes a pre-spray layer 7, a spray layer 8 and a demister 9 from bottom to top.
所述的船舶动力装置高效低阻力集成式废气洗涤脱硫设备，其运动模式分为非洗涤模式和洗涤模式。The high-efficiency and low-resistance integrated exhaust gas scrubbing and desulfurization equipment of the ship power plant has a movement mode of non-washing mode and washing mode.
当船舶航行在非硫排放控制区域和非港口区域时，废气洗涤脱硫设备运行在非洗涤模式，即三通阀4直接连通排气管A和废气旁通管路C，动力装置(1、2、3)工作产生的废气直接排入环境大气。When the ship sails in the non-sulfur emission control area and non-port area, the exhaust gas scrubbing and desulfurization equipment operates in the non-scrubbing mode, that is, the three-way valve 4 is directly connected to the exhaust pipe A and the waste gas bypass pipeline C, and the power unit (1, 2 , 3) The exhaust gas generated by the work is directly discharged into the ambient atmosphere.
当船舶航行在硫排放控制区域或港口区域时，废气洗涤脱硫设备运行在洗涤模式，即三通阀4连通排气管A和废气洗涤管路B，动力装置(1、2、3)工作产生的废气排入废气稳压箱5，废气经稳压后，进入废气洗涤装置6，洗涤脱除SOx和颗粒，经除雾后，排入环境大气。When the ship sails in the sulfur emission control area or the port area, the exhaust gas scrubbing and desulfurization equipment operates in the scrubbing mode, that is, the three-way valve 4 connects the exhaust pipe A and the exhaust gas scrubbing pipeline B, and the power unit (1, 2, 3) works to generate The waste gas is discharged into the waste gas pressure stabilization box 5, and after the pressure is stabilized, the waste gas enters the waste gas washing device 6 to wash and remove SOx and particles, and is discharged into the ambient atmosphere after demisting.
当废气洗涤装置6维修或出现故障时，通过调整动力装置排气管A上的三通阀通路4，动力装置工作产生的废气直接经废气旁通管路C排入环境大气。When the exhaust gas cleaning device 6 is repaired or fails, by adjusting the three-way valve passage 4 on the exhaust pipe A of the power unit, the exhaust gas generated by the power unit is directly discharged into the ambient atmosphere through the waste gas bypass line C.
当船舶使用的燃油硫含量较低时，只需洗涤部分废气即可达到排放要求，此时对船舶柴油机排气采用废气分流洗涤技术，根据燃油硫含量和航行海域排放控制要求，通过三通阀4控制分流部分废气，进行洗涤，处理后废气与其余未经洗涤的废气混合，使混合气符合当前海域排放要求，减少洗涤系统负荷和能量消耗。When the sulfur content of the fuel oil used by the ship is low, only part of the exhaust gas can be washed to meet the emission requirements. At this time, the exhaust gas shunt washing technology is used for the exhaust gas of the marine diesel engine. 4. Control and divert part of the exhaust gas for washing. The treated exhaust gas is mixed with the rest of the unwashed exhaust gas to make the mixed gas meet the current discharge requirements of the sea area and reduce the load and energy consumption of the washing system.
所述废气洗涤装置6的设计容量，根据船舶同时运行的动力装置的废气量总和的最大量确定。The design capacity of the exhaust gas scrubbing device 6 is determined according to the maximum amount of the sum of the exhaust gas volumes of the power plants running at the same time on the ship.
所述废气洗涤装置6，对动力装置废气进行如下处理：The exhaust gas cleaning device 6 performs the following treatment on the exhaust gas of the power plant:
1.预洗涤与冷却：对船舶主柴油机1、船舶辅助柴油机2和船舶燃油锅炉3产生的含有SOx和颗粒的高温废气进行预洗涤，降低其温度，同时洗涤其部分SOx和颗粒。1. Pre-washing and cooling: pre-wash the high-temperature exhaust gas containing SOx and particles produced by the main diesel engine 1, auxiliary diesel engine 2 and oil-fired boiler 3, reduce its temperature, and wash part of the SOx and particles at the same time.
2.洗涤：对经过预洗涤降温的废气，采用洗涤液喷淋进行洗涤，除去其中的SOx和颗粒。2. Washing: The exhaust gas that has been pre-washed and cooled is sprayed with washing liquid to remove SOx and particles.
3.除雾：对经过洗涤，已除去SOx的废气，经除雾器除雾，回收其中所含水分。3. Demisting: For the exhaust gas that has been washed to remove SOx, it is demistered by a demister and the water contained in it is recovered.
动力装置工况变化时，通过调整预洗涤和洗涤喷淋量，使对废气的洗涤效果达到规定的要求。When the working condition of the power unit changes, the cleaning effect on the exhaust gas can meet the specified requirements by adjusting the pre-washing and washing spray volume.
在上述废气洗涤装置6中，喷淋器采用一级或多级喷淋层。In the above-mentioned exhaust gas scrubbing device 6, the sprayer adopts one-stage or multi-stage spraying layers.
上述废气洗涤脱硫装置6，采用碱性物质水溶液或海水洗涤废气，所述碱性物质水溶液为氢氧化钠溶液、碳酸钠溶液或者碳酸氢钠溶液等碱液，洗涤方式为闭式洗涤、混合洗涤或开式洗涤。The exhaust gas washing and desulfurization device 6 above uses an aqueous solution of alkaline substances or seawater to wash the exhaust gas. The aqueous solution of alkaline substances is an alkali solution such as sodium hydroxide solution, sodium carbonate solution or sodium bicarbonate solution, and the washing method is closed washing or mixed washing. or open wash.
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