CN212057353U - A waste and biomass coupled power generation system - Google Patents
A waste and biomass coupled power generation system Download PDFInfo
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- CN212057353U CN212057353U CN202020539751.1U CN202020539751U CN212057353U CN 212057353 U CN212057353 U CN 212057353U CN 202020539751 U CN202020539751 U CN 202020539751U CN 212057353 U CN212057353 U CN 212057353U
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- 239000002028 Biomass Substances 0.000 title claims abstract description 27
- 238000010248 power generation Methods 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003546 flue gas Substances 0.000 claims abstract description 49
- 238000001035 drying Methods 0.000 claims abstract description 33
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 239000010813 municipal solid waste Substances 0.000 claims description 17
- 239000003245 coal Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000004056 waste incineration Methods 0.000 abstract description 7
- 239000002956 ash Substances 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002893 slag Substances 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000010791 domestic waste Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
本实用新型公开了一种垃圾及生物质耦合发电系统，干化造粒机的出口与Ⅰ级旋风分离器的入口相连通，Ⅰ级旋风分离器的烟气出口与卧式旋风炉的烟气侧入口相连通，卧式旋风炉的烟气侧出口与Ⅱ级旋风分离器的入口相连通，Ⅱ级旋风分离器的出口与空气预热器的烟气侧入口相连通，空气预热器的烟气侧出口与引风机的入口相连通，引风机的出口与干化造粒机的烟气入口及燃煤机组电站锅炉的烟气入口相连通，送风机的出口与空气预热器的空气侧入口相连通，空气预热器的空气侧出口与卧式旋风炉的空气侧入口相连通，该系统能够对垃圾及生物质进行焚烧，同时实现垃圾焚烧发电系统与常规燃煤发电系统的耦合。
The utility model discloses a waste and biomass coupling power generation system. The outlet of the drying granulator is communicated with the inlet of a level I cyclone separator, and the flue gas outlet of the level I cyclone separator is connected with the flue gas of a horizontal cyclone furnace. The side inlet is connected, the flue gas side outlet of the horizontal cyclone furnace is connected with the inlet of the II-stage cyclone separator, and the outlet of the II-stage cyclone separator is connected with the flue gas side inlet of the air preheater. The outlet of the flue gas side is connected with the inlet of the induced draft fan, the outlet of the induced draft fan is connected with the flue gas inlet of the drying granulator and the flue gas inlet of the coal-fired power plant boiler, and the outlet of the blower is connected with the air side of the air preheater. The inlet is connected, and the air side outlet of the air preheater is connected with the air side inlet of the horizontal cyclone furnace. The system can incinerate waste and biomass, and realize the coupling between the waste incineration power generation system and the conventional coal-fired power generation system.
Description
技术领域technical field
本实用新型属于城市生活垃圾处置及生物质利用技术领域，涉及一种垃圾及生物质耦合发电系统。The utility model belongs to the technical field of urban domestic waste disposal and biomass utilization, and relates to a waste and biomass coupling power generation system.
背景技术Background technique
随着经济的迅速发展以及国民生活水平的日益提高，“垃圾围城”的困境日益突出，如何处理数量庞大的生活垃圾已成为目前我国面临的严峻问题之一。生活垃圾的处理方式有三种：直接焚烧、卫生填埋和堆肥，目前填埋是我国主要的垃圾处理方法，其容易造成土壤污染、地下水污染及周边大气环境污染，相比于易造成二次污染的填埋与难以销售的垃圾堆肥，直接焚烧逐渐成为我国生活垃圾处理的主流方式。垃圾焚烧过程中，会产生大量的热量，将这部分热量用于发电，可实现余热回收及资源最大化使用。由此，对垃圾焚烧发电系统与常规的燃煤发电系统进行耦合，有望实现垃圾焚烧所产生热量的高效利用，进而解决垃圾焚烧发电厂效率偏低的问题，因此现有技术没有针对垃圾及生物质焚烧发电的案例。With the rapid development of the economy and the improvement of people's living standards, the dilemma of "garbage besieged" has become increasingly prominent. How to deal with a huge amount of domestic waste has become one of the serious problems facing our country. There are three ways to dispose of domestic garbage: direct incineration, sanitary landfill and composting. Landfill is currently the main garbage disposal method in my country, which is likely to cause soil pollution, groundwater pollution and surrounding air pollution, which is more likely to cause secondary pollution than secondary pollution. Direct incineration has gradually become the mainstream method of domestic waste disposal in my country. In the process of waste incineration, a large amount of heat will be generated, and this part of the heat will be used for power generation, which can realize waste heat recovery and maximize the use of resources. Therefore, coupling the waste incineration power generation system with the conventional coal-fired power generation system is expected to realize the efficient utilization of the heat generated by the waste incineration, thereby solving the problem of low efficiency of the waste incineration power plant. The case of biomass incineration for power generation.
实用新型内容Utility model content
本实用新型的目的在于克服上述现有技术的缺点，提供了一种垃圾及生物质耦合发电系统，该系统能够对垃圾及生物质进行焚烧，同时实现垃圾焚烧发电系统与常规燃煤发电系统的耦合。The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and provide a waste and biomass coupled power generation system, which can incinerate waste and biomass, and simultaneously realize the integration of waste incineration power generation system and conventional coal-fired power generation system. coupling.
为达到上述目的，本实用新型所述的垃圾及生物质耦合发电系统包括燃煤机组电站锅炉、干化造粒机、Ⅰ级旋风分离器、卧式旋风炉、Ⅱ级旋风分离器、空气预热器、送风机及引风机；In order to achieve the above purpose, the waste and biomass coupled power generation system of the present invention includes a coal-fired power plant boiler, a drying granulator, a level I cyclone, a horizontal cyclone furnace, a level II cyclone, and an air preheater. Heater, blower and induced draft fan;
垃圾输送管道、生物质输送管道及原煤输送管道与干化造粒机的入口相连通，干化造粒机的出口与Ⅰ级旋风分离器的入口相连通，Ⅰ级旋风分离器的烟气出口与卧式旋风炉的烟气侧入口相连通，卧式旋风炉的烟气侧出口与Ⅱ级旋风分离器的入口相连通，Ⅱ级旋风分离器的出口与空气预热器的烟气侧入口相连通，空气预热器的烟气侧出口与引风机的入口相连通，引风机的出口与干化造粒机的烟气入口及燃煤机组电站锅炉的烟气入口相连通，送风机的出口与空气预热器的空气侧入口相连通，空气预热器的空气侧出口与卧式旋风炉的空气侧入口相连通。The waste conveying pipeline, biomass conveying pipeline and raw coal conveying pipeline are connected with the inlet of the drying granulator, the outlet of the drying granulator is connected with the inlet of the Class I cyclone separator, and the flue gas outlet of the Class I cyclone separator It is connected with the flue gas side inlet of the horizontal cyclone furnace, the flue gas side outlet of the horizontal cyclone furnace is connected with the inlet of the second-stage cyclone separator, and the outlet of the second-stage cyclone separator is connected with the flue gas side inlet of the air preheater. The outlet of the flue gas side of the air preheater is communicated with the inlet of the induced draft fan, and the outlet of the induced draft fan is communicated with the flue gas inlet of the drying granulator and the flue gas inlet of the power station boiler of the coal-fired unit, and the outlet of the blower is connected. It is communicated with the air side inlet of the air preheater, and the air side outlet of the air preheater is communicated with the air side inlet of the horizontal cyclone furnace.
Ⅰ级旋风分离器底部的物料出口处设置有出料螺旋，Ⅰ级旋风分离器底部的物料出口与干化造粒机的入口相连通。The material outlet at the bottom of the I-level cyclone separator is provided with a discharging screw, and the material outlet at the bottom of the I-level cyclone separator is communicated with the inlet of the drying granulator.
引风机的出口与干化造粒机的烟气入口之间设置有第一热烟气阀。A first hot flue gas valve is arranged between the outlet of the induced draft fan and the flue gas inlet of the drying granulator.
引风机的出口与燃煤机组电站锅炉的烟气入口之间通过第二热烟气阀相连通。The outlet of the induced draft fan is communicated with the flue gas inlet of the power station boiler of the coal-fired unit through the second hot flue gas valve.
本实用新型具有以下有益效果：The utility model has the following beneficial effects:
本实用新型所述的垃圾及生物质耦合发电系统在具体操作时，基于旋转分离技术实现烟粉混合物的合格粒度筛选与飞灰分类处理，具体的，通过设置在干化造粒机后的Ⅰ级旋风分离器对干化造粒机输出的烟粉混合物进行旋转分离，其中，分离出的不合格大颗粒物质返回至干化造粒机中继续进行研磨，直至粒度合格后送入卧式旋风炉，另外，通过设置在卧式旋风炉后的Ⅱ级旋风分离器进行旋转分离除灰，再将Ⅱ级旋风分离器底部排出的飞灰及热空气再次送入卧式旋风炉中进行无害化处理，不会造成二次污染。另外，本实用新型基于垃圾的灰渣需要固化处理的特点，采用卧式旋风炉进行焚烧，能够将灰渣烧至熔融状态，便于进行后续的无害化处理。同时根据待处理物的不同而切换焚烧系统的工作模式，并实现垃圾焚烧发电系统与常规燃煤发电系统的耦合，具体的，当处理物为垃圾时，则将垃圾送入干化造粒机中，与原煤一同磨制成颗粒状，再通过热烟气干化后将烟粉混合物送入Ⅰ级旋风分离器中进行旋转分离，粒度合格的混合物送入卧式旋风炉中进行燃烧，燃烧产生的灰渣排出卧式旋风炉后进行无害化处理，燃烧后的热烟气除灰后根据需要分别送入干化造粒机及送入燃煤机组电站锅炉进行后续燃烧；当处理物为生物质时，将生物质送入干化造粒机，不需要加入原煤，通过热烟气干化后将烟粉混合物送入Ⅰ级旋风分离器中进行旋转分离，粒度合格的混合物送入卧式旋风炉中，燃烧产生的灰渣排出卧式旋风炉，单独处理作为肥料。During the specific operation of the waste and biomass coupled power generation system of the utility model, the qualified particle size screening and fly ash classification treatment of the soot mixture are realized based on the rotary separation technology. The cyclone separator rotates and separates the soot mixture output by the drying granulator, wherein the separated unqualified large particles are returned to the drying granulator for continuous grinding until the particle size is qualified and then sent to the horizontal cyclone In addition, the second-stage cyclone separator installed after the horizontal cyclone furnace is used for rotary separation and ash removal, and then the fly ash and hot air discharged from the bottom of the second-stage cyclone separator are sent to the horizontal cyclone furnace again for harmless Chemical treatment will not cause secondary pollution. In addition, based on the characteristics that the ash and slag of the garbage needs to be solidified, the utility model adopts a horizontal cyclone furnace for incineration, which can burn the ash and slag to a molten state, which is convenient for subsequent harmless treatment. At the same time, the working mode of the incineration system is switched according to the different objects to be treated, and the coupling between the waste incineration power generation system and the conventional coal-fired power generation system is realized. Specifically, when the treatment object is garbage, the garbage is sent to the drying granulator. In the process, it is ground together with the raw coal into granules, and then dried by the hot flue gas, the soot mixture is sent to the Class I cyclone for rotary separation, and the mixture with qualified particle size is sent to the horizontal cyclone for combustion. The generated ash and slag are discharged from the horizontal cyclone furnace for harmless treatment, and the hot flue gas after combustion is deashed and sent to the drying granulator and the coal-fired power plant boiler for subsequent combustion as required; When it is biomass, the biomass is sent to the drying granulator without adding raw coal. After being dried by hot flue gas, the soot mixture is sent to the Class I cyclone for rotary separation, and the mixture with qualified particle size is sent to In the horizontal cyclone furnace, the ash produced by combustion is discharged out of the horizontal cyclone furnace and treated separately as fertilizer.
附图说明Description of drawings
图1为本实用新型的原理图。Fig. 1 is the principle diagram of the utility model.
其中，1为干化造粒机、2为出料螺旋、3为Ⅰ级旋风分离器、4为卧式旋风炉、5为Ⅱ级旋风分离器、6为空气预热器、7为送风机、8为引风机、9为第一热烟气阀、10为第二热烟气阀。Among them, 1 is the drying granulator, 2 is the discharging screw, 3 is the I-level cyclone separator, 4 is the horizontal cyclone furnace, 5 is the II-level cyclone separator, 6 is the air preheater, 7 is the blower, 8 is the induced draft fan, 9 is the first hot flue gas valve, and 10 is the second hot flue gas valve.
具体实施方式Detailed ways
下面结合附图对本实用新型做进一步详细描述：Below in conjunction with accompanying drawing, the utility model is described in further detail:
参考图1，本实用新型所述的垃圾及生物质耦合发电系统包括燃煤机组电站锅炉、干化造粒机1、Ⅰ级旋风分离器3、卧式旋风炉4、Ⅱ级旋风分离器5、空气预热器6、送风机7及引风机8；垃圾输送管道、生物质输送管道及原煤输送管道与干化造粒机1的入口相连通，干化造粒机1的出口与Ⅰ级旋风分离器3的入口相连通，Ⅰ级旋风分离器3的烟气出口与卧式旋风炉4的烟气侧入口相连通，卧式旋风炉4的烟气侧出口与Ⅱ级旋风分离器5的入口相连通，Ⅱ级旋风分离器5的出口与空气预热器6的烟气侧入口相连通，空气预热器6的烟气侧出口与引风机8的入口相连通，引风机8的出口与干化造粒机1的烟气入口及燃煤机组电站锅炉的烟气入口相连通，送风机7的出口与空气预热器6的空气侧入口相连通，空气预热器6的空气侧出口与卧式旋风炉4的空气侧入口相连通。Referring to FIG. 1 , the waste and biomass coupled power generation system of the present utility model includes a coal-fired power plant boiler, a drying granulator 1, a level I cyclone 3, a horizontal cyclone furnace 4, and a level II
Ⅰ级旋风分离器3底部的物料出口处设置有出料螺旋2，Ⅰ级旋风分离器3底部的物料出口与干化造粒机1的入口相连通；引风机8的出口与干化造粒机1的烟气入口之间设置有第一热烟气阀9；引风机8的出口与燃煤机组电站锅炉的烟气入口之间通过第二热烟气阀10相连通。The material outlet at the bottom of the first-level cyclone separator 3 is provided with a discharging screw 2, and the material outlet at the bottom of the first-level cyclone separator 3 is connected with the inlet of the drying granulator 1; the outlet of the induced draft fan 8 is connected with the drying granulation. A first hot flue gas valve 9 is arranged between the flue gas inlets of the machine 1;
本实用新型的具体操作过程为：The concrete operation process of the present utility model is:
当处理物为垃圾时，将热烟气、垃圾及原煤送入到干化造粒机1中，垃圾与原煤在干化造粒机1中磨制成颗粒状，同时经热烟气干化后送入Ⅰ级旋风分离器3中进行旋转分离，其中，分离出来的大颗粒物质从Ⅰ级旋风分离器3的底部排出进入到干化造粒机1中继续进行研磨，分离出来的小颗粒物质送入卧式旋风炉4中，并与送风机7送入的热空气混合后进行燃烧，燃烧产生的灰渣排出卧式旋风炉4后进行无害化处理，燃烧后的热烟气进入Ⅱ级旋风分离器5中进行旋转分离除灰，其中，分离出的飞灰经热空气送入卧式旋风炉4中，并最终形成熔融状的无害化灰渣；除灰后的热烟气进入空气预热器6中进行换热，然后经引风机8分别送入干化造粒机1及送入燃煤机组电站锅炉中进行后续燃烧；When the object to be treated is garbage, the hot flue gas, garbage and raw coal are sent to the drying granulator 1, and the garbage and raw coal are ground into granules in the drying granulator 1, and are dried by the hot flue gas at the same time. Then, it is sent to the first-stage cyclone separator 3 for rotary separation, wherein the separated large particles are discharged from the bottom of the first-stage cyclone separator 3 and enter into the drying granulator 1 for further grinding, and the separated small particles The substance is sent into the horizontal cyclone furnace 4, and mixed with the hot air sent by the blower 7, and then burned, the ash and slag produced by the combustion are discharged out of the horizontal cyclone furnace 4 and then subjected to harmless treatment, and the hot flue gas after combustion enters the II Rotary separation and ash removal are carried out in the
当处理物为生物质时，将生物质及热烟气送入干化造粒机1中，生物质通过热烟气干化后送入Ⅰ级旋风分离器3中进行旋转分离，其中，分离出来的大颗粒物质从Ⅰ级旋风分离器3的底部排出进入到干化造粒机1中继续进行研磨，分离出来的小颗粒物质送入卧式旋风炉4中，与送风机7送入空气预热器6中加热后的热空气混合后进行燃烧，燃烧产生的灰渣排出卧式旋风炉4，并处理后作为肥料，燃烧后的热烟气进入Ⅱ级旋风分离器5中进行旋转分离除灰，除灰后的热烟气进入空气预热器6中进行换热，然后经引风机8分别送入干化造粒机1中及送入燃煤机组电站锅炉中进行后续燃烧。When the treated material is biomass, the biomass and hot flue gas are sent to the drying granulator 1, and the biomass is dried by the hot flue gas and sent to the first-stage cyclone separator 3 for rotary separation, wherein the separation The large particles that come out are discharged from the bottom of the first-stage cyclone separator 3 and enter into the drying granulator 1 for further grinding. The hot air heated in the
本实用新型能够对垃圾及生物质进行有效焚烧，将产生的热量用于发电，可实现余热回收及资源的最大化使用，通过对垃圾及生物质处理系统与常规的燃煤发电系统进行耦合，实现垃圾及生物质焚烧所产生热量的高效利用。利用本实用新型，不仅能够实现垃圾及生物质有效焚烧，而且能够根据待处理物的不同灵活切换焚烧系统模式，实现灵活准确控制，并且可以针对性处理焚烧产物，不会造成二次污染，对实现垃圾及生物质的减量化、无害化、资源化和规模化处置，具有重要意义。The utility model can effectively incinerate garbage and biomass, use the generated heat for power generation, and realize waste heat recovery and maximized use of resources. Realize the efficient utilization of heat generated by waste and biomass incineration. The utility model can not only realize the effective incineration of garbage and biomass, but also can flexibly switch the incineration system mode according to the different objects to be treated, realize flexible and accurate control, and can treat the incineration products in a targeted manner without causing secondary pollution. It is of great significance to realize the reduction, harmlessness, resource utilization and large-scale disposal of garbage and biomass.
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