CN209362161U - A low-temperature flue gas waste heat recovery and purification system for alumina roasting furnace - Google Patents
A low-temperature flue gas waste heat recovery and purification system for alumina roasting furnace Download PDFInfo
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- CN209362161U CN209362161U CN201822222632.9U CN201822222632U CN209362161U CN 209362161 U CN209362161 U CN 209362161U CN 201822222632 U CN201822222632 U CN 201822222632U CN 209362161 U CN209362161 U CN 209362161U
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000003546 flue gas Substances 0.000 title claims abstract description 87
- 238000000746 purification Methods 0.000 title claims abstract description 82
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000011084 recovery Methods 0.000 title claims abstract description 13
- 239000002918 waste heat Substances 0.000 title claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000779 smoke Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 11
- 238000010248 power generation Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000428 dust Substances 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本实用新型提出了一种氧化铝焙烧炉的低温烟气余热回收净化系统，包括发电子系统和净化子系统，发电子系统包括换热器、蒸发器、预热器、工质泵和发电机组；净化子系统包括烟气净化塔，烟气净化塔连通有进烟管，进烟管的首部与换热器的排烟口连通，烟气净化塔底部设有水箱，水箱内设有净化液，水箱还连通有循环管，循环管上设有循环泵，水箱上方设有喷淋部，喷淋部包括第一喷淋管和第二喷淋管，烟气净化塔内还横向设置有分流漏斗，分流漏斗的侧壁上设有漏孔，烟气净化塔的顶部设有除杂层和排烟口。能够先吸收烟气的热量进行发电，再将烟气分化成小缕状的烟气，净化烟气中的粉尘和有害气体，合理利用资源，节能减排，保护环境。
The utility model proposes a low-temperature flue gas waste heat recovery and purification system of an alumina roasting furnace, which includes a power generation sub-system and a purification sub-system. The power generation sub-system includes a heat exchanger, an evaporator, a preheater, a working medium pump and a generator set The purification subsystem includes a flue gas purification tower, the flue gas purification tower is connected with a smoke inlet pipe, the head of the smoke inlet pipe is connected with the smoke exhaust port of the heat exchanger, a water tank is provided at the bottom of the flue gas purification tower, and a purification liquid is arranged in the water tank , the water tank is also connected with a circulation pipe, a circulation pump is arranged on the circulation pipe, and a spraying part is arranged above the water tank, and the spraying part includes a first spray pipe and a second spray pipe. The funnel and the side wall of the diverting funnel are provided with a leak hole, and the top of the flue gas purification tower is provided with an impurity removal layer and a smoke exhaust port. It can first absorb the heat of the flue gas to generate electricity, and then decompose the flue gas into small strands of flue gas, purify the dust and harmful gases in the flue gas, rationally use resources, save energy and reduce emissions, and protect the environment.
Description
技术领域technical field
本实用新型涉及工业环保技术领域，具体涉及一种氧化铝焙烧炉的低温烟气余热回收净化系统。The utility model relates to the technical field of industrial environmental protection, in particular to a low-temperature flue gas waste heat recovery and purification system of an alumina roasting furnace.
背景技术Background technique
铝，其使用范围和消费量均仅次于钢铁，是第二大金属。伴随着科学技术的进步，铝及其合金的应用越来越广泛，因而人们又把金属铝称为21世纪金属。进十年来，我国铝工业发展迅猛，但面对氧化铝的焙烧设备燃料重油气味大、能耗高、污染环境等现象，如何有效地对氧化铝生产工序中产生的烟气进行合理利用，以达到节能减排的作用，成为了行业难题。Aluminum is the second largest metal after steel in terms of usage and consumption. With the advancement of science and technology, the application of aluminum and its alloys has become more and more extensive, so people call aluminum the metal of the 21st century. In the past ten years, my country's aluminum industry has developed rapidly, but in the face of the phenomenon of heavy oil smell, high energy consumption, and environmental pollution in the roasting equipment of alumina, how to effectively use the flue gas generated in the alumina production process reasonably, and To achieve the role of energy saving and emission reduction has become a difficult problem in the industry.
实用新型内容Utility model content
本实用新型旨在至少解决现有技术中存在的技术问题，特别创新地提出了一种氧化铝焙烧炉的低温烟气余热回收净化系统，以合理利用低温烟气进行节能，并减少对环境的污染。The utility model aims to at least solve the technical problems existing in the prior art, and especially innovatively proposes a low-temperature flue gas waste heat recovery and purification system for alumina roasting furnaces, so as to rationally use low-temperature flue gas for energy saving and reduce environmental impact. Pollution.
为了实现本实用新型的上述目的，本实用新型提供了一种氧化铝焙烧炉的低温烟气余热回收净化系统，包括发电子系统和净化子系统，所述发电子系统包括与焙烧炉烟气总管的排烟口连通的换热器，所述换热器的高温供水口连通蒸发器的热源进水口，所述蒸发器的热源出水口连通预热器的热源进水口，所述预热器的热源出水口连通换热器的低温回水口，所述预热器的工质进口连通工质泵的工质出口，所述预热器的工质出口与蒸发器的工质进口相连，所述蒸发器的工质出口连通到发电机组的工质进口，所述发电机组的工质出口连接到冷凝器的工质进口，所述冷凝器的工质出口连接到工质泵的工质出口；In order to achieve the above purpose of the utility model, the utility model provides a low-temperature flue gas waste heat recovery and purification system of an alumina roasting furnace, which includes a power generation sub-system and a purification subsystem. The heat exchanger connected to the smoke outlet of the heat exchanger, the high temperature water supply port of the heat exchanger is connected to the heat source water inlet of the evaporator, the heat source water outlet of the evaporator is connected to the heat source water inlet of the preheater, and the heat source water inlet of the preheater is The water outlet of the heat source is connected to the low-temperature water return port of the heat exchanger, the working fluid inlet of the preheater is connected to the working fluid outlet of the working fluid pump, the working fluid outlet of the preheater is connected to the working fluid inlet of the evaporator, and the The working medium outlet of the evaporator is connected to the working medium inlet of the generating set, the working medium outlet of the generating set is connected to the working medium inlet of the condenser, and the working medium outlet of the condenser is connected to the working medium outlet of the working medium pump;
所述净化子系统包括烟气净化塔，所述烟气净化塔连通有进烟管，所述进烟管的首部与换热器的排烟口连通，所述烟气净化塔底部设有上开口状的水箱，所述水箱内设有净化液，所述水箱还连通有循环管，所述循环管上设有循环泵，所述水箱上方设有与循环管连通的喷淋部，所述喷淋部包括第一喷淋管和第二喷淋管，所述第一喷淋管盘旋设置在烟气净化塔内侧壁上，所述第二喷淋管延伸到烟气净化塔的中部，所述第一喷淋管与第二喷淋管上均设有若干喷头，所述第二喷淋管位于第一喷淋管的上方，且所述第二喷淋管上的喷头为洒水喷头；所述第一喷淋管上的喷头为雾化喷头，所述烟气净化塔内还横向设置有分流漏斗，所述分流漏斗位于水箱与喷淋部之间，所述分流漏斗的侧壁上设有漏孔，所述喷淋部上方设有除杂层，所述烟气净化塔的顶部设有排烟口。The purification subsystem includes a flue gas purification tower, the flue gas purification tower is connected with a smoke inlet pipe, the head of the smoke inlet pipe is connected with the smoke exhaust port of the heat exchanger, and the bottom of the flue gas purification tower is provided with an upper An open water tank, the water tank is provided with purification liquid, the water tank is also connected with a circulation pipe, the circulation pipe is provided with a circulation pump, and a spray part connected with the circulation pipe is provided above the water tank. The spray part includes a first spray pipe and a second spray pipe, the first spray pipe is spirally arranged on the inner wall of the flue gas purification tower, and the second spray pipe extends to the middle of the flue gas purification tower, Both the first spray pipe and the second spray pipe are provided with a number of spray heads, the second spray pipe is located above the first spray pipe, and the spray heads on the second spray pipe are sprinkler heads The nozzle on the first spray pipe is an atomizing nozzle, and a diverter funnel is also arranged horizontally in the flue gas purification tower, and the diverter funnel is located between the water tank and the spray part, and the side wall of the diverter funnel There is a leak hole on the upper part, an impurity removal layer is arranged above the spraying part, and a smoke exhaust port is arranged on the top of the flue gas purification tower.
换热器用于回收焙烧炉烟气总管中烟气的热能，产生热水，作为热源驱动发电机组发电。工质泵用于为工质提供流动的压力，工质在工质泵的压力驱动下，先后经过预热器和蒸发器，被热水加热形成气态工质，进入发电机组并推动发电机组做功发电，经发电机组排出后继续进入冷凝器，经冷凝器冷凝成液态工质，回到工质泵继续循环，以此完成对烟气热能的发电作用。The heat exchanger is used to recover the heat energy of the flue gas in the flue gas main pipe of the roaster to generate hot water, which is used as a heat source to drive the generator set to generate electricity. The working medium pump is used to provide flowing pressure for the working medium. Driven by the pressure of the working medium pump, the working medium passes through the preheater and the evaporator successively, is heated by hot water to form a gaseous working medium, enters the generator set and drives the generator set to do work Power generation, after being discharged by the generator set, it continues to enter the condenser, condenses into a liquid working medium through the condenser, and returns to the working medium pump to continue circulation, so as to complete the power generation of the flue gas heat energy.
进烟管用于向烟气净化塔中引入烟气。水箱用于盛放和收集净化液，循环泵用于将净化液泵至喷林系统中，再通过喷头将净化液喷出，净化液在重力作用下掉落在分流漏斗上，经漏斗收集掉回水箱中，以此实现对净化液的循环。分流漏斗上的漏孔用于将烟气分化成一缕一缕的烟气，以此实现对烟气的分流。在净化液从分流漏斗的侧壁上流动的过程中还会与从漏孔中通过的烟气接触，初步洗掉烟气中的杂质和水溶性有害气体，然后烟气上升，喷头喷出的净化液用于充分与烟气结合，充分吸收烟气中的杂质和有害气体。除杂层用于吸收烟气中残留的水分、杂质和有害气体。The smoke inlet pipe is used to introduce flue gas into the flue gas purification tower. The water tank is used to hold and collect the purification liquid, and the circulation pump is used to pump the purification liquid to the forest spraying system, and then spray the purification liquid through the nozzle, and the purification liquid falls on the diversion funnel under the action of gravity, and is collected by the funnel Return to the water tank to realize the circulation of the purified liquid. The leak holes on the diverter funnel are used to divide the smoke into strands of smoke, so as to realize the shunting of the smoke. When the purification liquid flows from the side wall of the diverting funnel, it will also contact the flue gas passing through the leak hole, and initially wash off the impurities and water-soluble harmful gases in the flue gas, and then the flue gas rises, and the nozzle sprays The purification liquid is used to fully combine with the flue gas and fully absorb impurities and harmful gases in the flue gas. The impurity removal layer is used to absorb residual moisture, impurities and harmful gases in the flue gas.
上述方案中：所述第一喷淋管上设有雾化器。能够喷出雾状的净化液，体积小，便于与烟气融合，能够充分吸收烟气中的杂质和有害气体。In the above solution: the first spray pipe is provided with an atomizer. It can spray mist purification liquid, small in size, easy to integrate with flue gas, and can fully absorb impurities and harmful gases in flue gas.
上述方案中：所述分流漏斗的侧壁为瓦楞状。能通过瓦楞状的低处形成汇集槽，便于净化液流动。In the above solution: the side wall of the diverting funnel is corrugated. A collection tank can be formed through the corrugated lower part to facilitate the flow of purification liquid.
上述方案中：所述循环管的始端设有过滤网。通过过滤网过滤水箱中的灰尘等杂质，避免由于杂质造成喷淋部的堵塞。In the above solution: the beginning of the circulation pipe is provided with a filter. Filter the dust and other impurities in the water tank through the filter to avoid the blockage of the spraying part caused by impurities.
上述方案中：所述进烟管的尾端延伸到分流漏斗下端口的正下方，且所述进烟管的尾端为斜切面，其中，进烟管的上侧长于下侧。可以通过分流漏斗中的水流将烟气冲散，进一步达到分化烟气的效果。In the above solution: the tail end of the smoke inlet pipe extends directly below the lower port of the diverter funnel, and the tail end of the smoke inlet pipe is an oblique section, wherein the upper side of the smoke inlet pipe is longer than the lower side. The flue gas can be dispersed by the water flow in the diverting funnel to further achieve the effect of differentiating the flue gas.
上述方案中：所述除杂层为活性炭层。活性炭的吸附效果好，材料易得，成本低。In the above scheme: the impurity-removing layer is an activated carbon layer. The adsorption effect of activated carbon is good, the material is easy to obtain, and the cost is low.
综上所述，由于采用了上述技术方案，本实用新型的有益效果是：能够首先通过发电子系统吸收烟气的热量进行发电，避免提高环境温度，合理利用烟气的热能，还能减少热气对后续设备的损坏，再通过净化子系统处理烟气中的有害气体、粉尘的杂质，降低生产成本，减少粉尘排放，保护社会环境，节能减排；通过分流漏斗将烟气分化成小缕状的烟气，便于净化液与烟气接触，避免由于烟气过于集中导致净化不充分。To sum up, due to the adoption of the above technical solution, the beneficial effects of the utility model are: firstly, the power generation sub-system can absorb the heat of the flue gas to generate electricity, avoid increasing the ambient temperature, rationally utilize the heat energy of the flue gas, and reduce hot gas For the damage of the follow-up equipment, the harmful gas and dust impurities in the flue gas are processed through the purification subsystem, which reduces production costs, reduces dust emissions, protects the social environment, saves energy and reduces emissions; the flue gas is divided into small strands through the diversion funnel The flue gas is convenient for the purification liquid to contact with the flue gas, and avoids insufficient purification due to excessive concentration of the flue gas.
附图说明Description of drawings
本实用新型的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
图1是本实用新型的系统图；Fig. 1 is a system diagram of the present utility model;
图2是本实用新型的烟气净化塔的结构示意图；Fig. 2 is the structural representation of the flue gas purification tower of the present utility model;
图3是本实用新型的分流漏斗的俯视图。Fig. 3 is a top view of the diverting funnel of the present invention.
具体实施方式Detailed ways
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.
如图1-图3所示，一种氧化铝焙烧炉的低温烟气余热回收净化系统，包括发电子系统和净化子系统，所述发电子系统包括与焙烧炉烟气总管1的排烟口连通的换热器11，所述换热器11的高温供水口连通蒸发器12的热源进水口，所述蒸发器12的热源出水口连通预热器16的热源进水口，所述预热器16的热源出水口连通换热器11的低温回水口，所述预热器16的工质进口连通工质泵15的工质出口，所述预热器16的工质出口与蒸发器12的工质进口相连，所述蒸发器12的工质出口连通到发电机组13的工质进口，所述发电机组13的工质出口连接到冷凝器14的工质进口，所述冷凝器14的工质出口连接到工质泵15的工质出口；As shown in Figures 1 to 3, a low-temperature flue gas waste heat recovery and purification system for an alumina roaster includes a power generation sub-system and a purification sub-system, and the power generation sub-system includes a smoke outlet connected to the flue gas main pipe 1 of the roaster A connected heat exchanger 11, the high temperature water supply port of the heat exchanger 11 is connected to the heat source water inlet of the evaporator 12, and the heat source water outlet of the evaporator 12 is connected to the heat source water inlet of the preheater 16, and the preheater The heat source water outlet of 16 is connected with the low-temperature water return port of heat exchanger 11, the working fluid inlet of the preheater 16 is connected with the working medium outlet of the working medium pump 15, and the working medium outlet of the preheater 16 is connected with the working medium outlet of the evaporator 12. The working medium inlet is connected, the working medium outlet of the evaporator 12 is connected to the working medium inlet of the generating set 13, the working medium outlet of the generating set 13 is connected to the working medium inlet of the condenser 14, and the working medium of the condenser 14 The outlet of the fluid is connected to the outlet of the fluid pump 15;
所述净化子系统包括烟气净化塔5，所述烟气净化塔5连通有进烟管51，所述进烟管51的首部与换热器11的排烟口连通，所述烟气净化塔5底部设有上开口状的水箱2，所述水箱2内设有净化液，所述水箱2还连通有循环管33，所述循环管33的始端设有过滤网31，通过过滤网31过滤水箱2中的粉尘等杂质，避免由于杂质造成喷淋部的堵塞。所述循环管33上设有循环泵32，所述水箱2上方设有与循环管33连通的喷淋部，所述喷淋部包括第一喷淋管35和第二喷淋管34，所述第一喷淋管35盘旋设置在烟气净化塔5内侧壁上，所述第二喷淋管34延伸到烟气净化塔5的中部，所述第一喷淋管35与第二喷淋管34上均设有若干喷头，所述第二喷淋管34位于第一喷淋管35的上方，且所述第二喷淋管34上的喷头为洒水喷头36；所述第一喷淋管35上设有雾化器37，所述第一喷淋管35上的喷头为雾化喷头，能够喷出雾状的净化液，体积小，便于与烟气融合，能够充分吸收烟气中的粉尘等杂质和有害气体。所述喷淋部上方设有除杂层4，所述除杂层4为活性炭层，除杂层4用于吸附烟气中的水分和残余的杂质、有害气体等，所述烟气净化塔5的顶部设有排烟口52。The purification subsystem includes a flue gas purification tower 5, the flue gas purification tower 5 is connected with a smoke inlet pipe 51, and the head of the smoke inlet pipe 51 is connected with the smoke outlet of the heat exchanger 11, and the flue gas purification The bottom of the tower 5 is provided with an upper opening water tank 2, the water tank 2 is provided with a purified liquid, and the water tank 2 is also connected with a circulation pipe 33, and the beginning of the circulation pipe 33 is provided with a filter screen 31, through which the filter screen 31 Filter impurities such as dust in the water tank 2 to avoid blocking of the spraying part due to impurities. The circulation pipe 33 is provided with a circulation pump 32, and the top of the water tank 2 is provided with a spray part communicating with the circulation pipe 33, and the spray part includes a first spray pipe 35 and a second spray pipe 34. The first spray pipe 35 is spirally arranged on the inner wall of the flue gas purification tower 5, the second spray pipe 34 extends to the middle part of the flue gas purification tower 5, and the first spray pipe 35 and the second spray pipe Pipe 34 is provided with some shower heads, and described second shower pipe 34 is positioned at the top of first shower pipe 35, and the shower head on described second shower pipe 34 is sprinkler head 36; The pipe 35 is provided with an atomizer 37, and the spray head on the first spray pipe 35 is an atomizing spray head, which can spray a mist-like purification liquid, is small in size, is easy to integrate with the smoke, and can fully absorb the smoke in the smoke. Dust and other impurities and harmful gases. The impurity removal layer 4 is arranged above the spraying part, and the impurity removal layer 4 is an activated carbon layer. The impurity removal layer 4 is used to absorb moisture, residual impurities, harmful gases, etc. in the flue gas. The flue gas purification tower The top of 5 is provided with exhaust outlet 52.
所述烟气净化塔5内还横向设置有分流漏斗6，所述分流漏斗6位于水箱2与喷淋部之间，所述分流漏斗6较大口径的一侧位于上侧，所述分流漏斗6的侧壁上设有漏孔62，所述分流漏斗6的侧壁为瓦楞状，能通过瓦楞状的低处形成汇集槽61，便于净化液汇集、流动。所述进烟管51的尾端511延伸到分流漏斗6下端口的正下方，能够通过分流漏斗的下端口掉出的净化液与烟气接触，进一步净化烟气，同时还能冲散烟气，且所述进烟管51的尾端511为斜切面，其中，进烟管51的上侧长于下侧，上侧边能够阻挡烟气直接上升，而从图2中的右侧或是前后两侧排出，能够进一步提高分散排出烟气的效果。The flue gas purification tower 5 is also horizontally provided with a diversion funnel 6, the diversion funnel 6 is located between the water tank 2 and the spraying part, the side of the larger diameter of the diversion funnel 6 is located on the upper side, and the diversion funnel 6 is located at the upper side. The side wall of 6 is provided with leak hole 62, and the side wall of described diversion funnel 6 is corrugated shape, can form collecting tank 61 through corrugated low place, is convenient to purify liquid to collect, flow. The tail end 511 of the smoke inlet pipe 51 extends directly below the lower port of the splitter funnel 6, and the purified liquid falling out of the lower port of the splitter funnel can contact the flue gas to further purify the flue gas and at the same time disperse the flue gas , and the tail end 511 of the smoke inlet pipe 51 is an oblique cut surface, wherein the upper side of the smoke inlet pipe 51 is longer than the lower side, and the upper side can prevent the smoke from rising directly, and the right side or the front and back in Fig. 2 Exhaust from both sides can further improve the effect of dispersing and exhausting smoke.
150℃的低温烟气经焙烧炉烟气总管1排出进入换热器11回收热量，以加热换热器11中的内网水至80℃～120℃，内网水再依次通过蒸发器12和预热器16，工质在工质泵15的驱动下依次进入预热器16和蒸发器12，工质进入预热器16后与内网水换热进行预热，再进入蒸发器12中形成蒸汽并排入到发电机组13中，推动发电机组13做功发电。经发电机组13排出后进入冷凝器14冷凝形成液态工质并回到工质泵15，继续循环，以此完成对烟气热量的回收发电作用。The low-temperature flue gas at 150°C is discharged through the flue gas main pipe 1 of the roaster and enters the heat exchanger 11 to recover heat, so as to heat the internal network water in the heat exchanger 11 to 80°C-120°C, and then the internal network water passes through the evaporator 12 and the In the preheater 16, the working fluid enters the preheater 16 and the evaporator 12 sequentially under the drive of the working fluid pump 15. After entering the preheater 16, the working fluid exchanges heat with the internal network water for preheating, and then enters the evaporator 12 The steam is formed and discharged into the generator set 13 to drive the generator set 13 to generate power. After being discharged from the generator set 13, it enters the condenser 14 to condense to form a liquid working medium and returns to the working medium pump 15 to continue the cycle, so as to complete the recovery and power generation of the flue gas heat.
烟气经换热器1111吸热后温度降低至100℃左右，从进烟管51进入烟气净化塔进行净化。烟气进入烟气净化塔中后，先通过分流漏斗的漏孔进行分流，形成一缕一缕的分散烟气，与从第一喷淋管35中雾化喷出的雾状净化液充分接触，让雾状净化液吸附烟气中的粉尘和有害气体。再通过第二喷淋管34上的洒水喷雾形成的水滴状净化液对烟气进行二次吸净化，以避免部分粉尘过大而雾状净化液无法吸附的情况，提高净化效果。同时，还能通过水滴状净化液与雾状净化液汇集，以带走烟气中夹杂的雾状净化液，减少净化液带出。After the flue gas absorbs heat through the heat exchanger 1111, the temperature drops to about 100°C, and then enters the flue gas purification tower from the flue gas inlet pipe 51 for purification. After the flue gas enters the flue gas purification tower, it is diverted through the leakage hole of the diverter funnel to form strands of scattered flue gas, which fully contacts with the atomized purification liquid sprayed from the first spray pipe 35 , let the mist purification liquid absorb the dust and harmful gases in the flue gas. Then, the droplet-shaped purification liquid formed by the sprinkling spray on the second spray pipe 34 performs secondary absorption and purification of the flue gas, so as to avoid the situation that some dust is too large and the mist purification liquid cannot be adsorbed, and the purification effect is improved. At the same time, the droplet purification liquid and the mist purification liquid can also be collected to take away the mist purification liquid mixed in the flue gas and reduce the purification liquid.
净化液靠重力掉落在瓦楞状的分流漏斗上时，会通过分流漏斗上的汇集槽进行汇集，并从分流漏斗的下端口掉出，继而掉入水箱2中，再通过循环泵32将净化液泵至第一喷淋管35和第二喷淋管34处，完成净化液的循环。净化液从下端口掉出时能够冲散烟气，避免烟气过于集中而导致净化液与烟气接触不充分的情况。净化液从瓦楞状的分流漏斗的突起棱掉流向汇集槽处时会经过漏孔，从而能够与从漏孔经过的烟气相互接触，进一步增加净化液与烟气的接触，以提高净化效果。When the purification liquid falls on the corrugated diverting funnel by gravity, it will be collected through the collecting tank on the diverting funnel, and will fall out from the lower port of the diverting funnel, and then fall into the water tank 2, and then the purified liquid will be purified by the circulating pump 32. The liquid is pumped to the first spray pipe 35 and the second spray pipe 34 to complete the circulation of the purification liquid. When the purification liquid falls out from the lower port, it can disperse the flue gas, avoiding the situation where the flue gas is too concentrated and the contact between the purification liquid and the flue gas is insufficient. When the purification liquid flows from the protruding edge of the corrugated diverter funnel to the collection tank, it will pass through the leak hole, so that it can contact with the flue gas passing through the leak hole, and further increase the contact between the purification liquid and the flue gas to improve the purification effect.
尽管已经示出和描述了本实用新型的实施例，本领域的普通技术人员可以理解：在不脱离本实用新型的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110787578A (en) * | 2019-11-14 | 2020-02-14 | 泰州市科健电炉电器有限公司 | Safe and efficient intermediate frequency furnace dust removal system |
| CN112076578A (en) * | 2020-09-15 | 2020-12-15 | 苏州兰晶电力设备有限公司 | Combustion furnace purification device |
| CN112377940A (en) * | 2020-11-09 | 2021-02-19 | 山东岱荣节能环保科技有限公司 | Purification system for recycling waste heat of flue gas |
| CN112393627A (en) * | 2020-10-30 | 2021-02-23 | 南京焓能环保科技有限公司 | Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace |
| CN112555837A (en) * | 2020-12-29 | 2021-03-26 | 杨克瑞 | Waste gas purification equipment for waste incineration power generation |
| CN114307466A (en) * | 2021-12-31 | 2022-04-12 | 中环国投生态科技股份有限公司 | Flue gas purifying device |
| CN117308124A (en) * | 2023-11-03 | 2023-12-29 | 江西大唐国际新余第二发电有限责任公司 | A kind of boiler flue gas waste heat recovery equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110787578A (en) * | 2019-11-14 | 2020-02-14 | 泰州市科健电炉电器有限公司 | Safe and efficient intermediate frequency furnace dust removal system |
| CN112076578A (en) * | 2020-09-15 | 2020-12-15 | 苏州兰晶电力设备有限公司 | Combustion furnace purification device |
| CN112393627A (en) * | 2020-10-30 | 2021-02-23 | 南京焓能环保科技有限公司 | Low-temperature dew point corrosion resistant waste heat recovery device of suspension roasting furnace |
| CN112377940A (en) * | 2020-11-09 | 2021-02-19 | 山东岱荣节能环保科技有限公司 | Purification system for recycling waste heat of flue gas |
| CN112555837A (en) * | 2020-12-29 | 2021-03-26 | 杨克瑞 | Waste gas purification equipment for waste incineration power generation |
| CN114307466A (en) * | 2021-12-31 | 2022-04-12 | 中环国投生态科技股份有限公司 | Flue gas purifying device |
| CN117308124A (en) * | 2023-11-03 | 2023-12-29 | 江西大唐国际新余第二发电有限责任公司 | A kind of boiler flue gas waste heat recovery equipment |
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