WO2023065572A1 - Multi-source waste disposal system and method based on pulverized coal-fired boiler - Google Patents
Multi-source waste disposal system and method based on pulverized coal-fired boiler Download PDFInfo
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- WO2023065572A1 WO2023065572A1 PCT/CN2022/075596 CN2022075596W WO2023065572A1 WO 2023065572 A1 WO2023065572 A1 WO 2023065572A1 CN 2022075596 W CN2022075596 W CN 2022075596W WO 2023065572 A1 WO2023065572 A1 WO 2023065572A1
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- flue gas
- disposal system
- pulverized coal
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- 239000002699 waste material Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000003546 flue gas Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 12
- 231100000719 pollutant Toxicity 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000003245 coal Substances 0.000 claims description 39
- 239000000126 substance Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
Definitions
- the invention belongs to the field of multi-source waste disposal, and relates to a multi-source waste disposal system and method based on a pulverized coal boiler.
- Pulverized coal boilers in coal-fired power plants have favorable conditions such as rich heat and electricity, high furnace combustion temperature and complete environmental protection facilities at the tail.
- the different dry and wet forms of waste from multiple sources cannot meet the special requirements of the suspension combustion of pulverized coal boilers, which restricts the development of waste disposal in the thermal power industry.
- the content of Cl in waste is relatively high, and a large amount of chlorine will be generated during the incineration process.
- the HCl gas will cause serious corrosion to the water wall of the boiler and affect the operation safety of the original boiler system; some wastes contain high content of heavy metals, and a large amount of mixed combustion will cause the content of heavy metals in the coal dust produced by the boiler system to exceed the standard, affecting Comprehensive utilization of fly ash.
- the above-mentioned factors and potential risks lead to a serious lag in the development of using pulverized coal boilers to dispose of multi-source wastes.
- the current situation of low utilization hours of thermal power units has led to low utilization rates of large-scale equipment in the country. New waste power plants or incinerators and other processes have caused Social investment funds and land waste.
- the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a pulverized coal boiler-based multi-source waste disposal system and method, which can realize the multi-source waste disposal.
- the multi-source waste disposal system based on pulverized coal boiler includes material storage system, hot air system, alkali removal agent system, integrated disposal system, burner, pulverized coal boiler and pollutant removal system;
- the outlet of the material storage system is connected to the material inlet of the integrated disposal system; a high-temperature flue gas interface is arranged on the flue between the furnace outlet of the pulverized coal boiler and the economizer, and a medium temperature flue gas interface is arranged on the flue of the economizer outlet of the pulverized coal boiler.
- the flue gas interface, the high-temperature flue gas interface and the medium-temperature flue gas interface are connected to the flue gas inlet of the integrated disposal system; the outlet of the hot air system is connected to the air inlet of the integrated disposal system; the outlet of the alkaline remover system is connected to the integrated disposal system
- the solution inlet of the system is connected; the outlet of the integrated disposal system is connected to the inlet of the burner, and the outlet of the burner is connected to the furnace of the pulverized coal boiler.
- the outlet of the material storage system is connected with the material inlet of the integrated disposal system through the feeding system.
- the high-temperature flue gas interface and the medium-temperature flue gas interface are connected to the inlet of the flue gas main pipe, and the outlet of the flue gas main pipe is connected to the flue gas inlet of the integrated treatment system.
- the outlet of the integrated disposal system is connected with the inlet of the burner through the fan.
- the outlet of the pulverized coal boiler is connected with the pollutant removal system.
- the multi-source waste disposal method based on pulverized coal boiler of the present invention comprises the following steps:
- the multi-source waste in the material storage system is sent to the integrated disposal system, and the 600-700°C high-temperature flue gas extracted from the high-temperature flue gas interface is mixed with the 300-400°C medium-temperature flue gas extracted from the medium-temperature flue gas interface to form a temperature
- the mixed flue gas at 550-600°C is sent to the integrated disposal system, the 300°C hot air generated by the hot air system is sent to the integrated disposal system, and the alkaline substances output by the alkaline remover system are sent to the integrated disposal system in the system;
- the output products of the integrated disposal system enter the furnace of the pulverized coal boiler through the burner for harmless incineration.
- the multi-source waste disposal system and method based on pulverized coal boilers In the specific operation of the multi-source waste disposal system and method based on pulverized coal boilers according to the present invention, high-temperature flue gas, hot air, alkali removal agent and waste are dried by direct contact in the integrated disposal system , carbonization, degreasing, deacidification, crushing and transportation integrated disposal, the output products of the integrated disposal system enter the furnace of the pulverized coal boiler for incineration disposal, and the pollutants generated by incineration are removed through the tail pollutant removal facilities,
- the invention breaks through the technical bottleneck that multi-source wastes have different dry and wet forms and cannot satisfy the suspension combustion of pulverized coal boilers, realizes the effective removal of tar, acid gas and heavy metals, and realizes the recycling and non-recycling of multi-source wastes by pulverized coal boilers.
- Harmful disposal promoting technological progress in the solid waste disposal industry and the power industry, improving the efficiency of the use of large-scale national equipment, replacing traditional processes such as waste power plants or incinerators, effectively saving social capital and land area, suitable for sludge, foam boards, and biomass , domestic garbage, river floating objects, rubber cloth strip shoe materials, sludge, medical waste and hazardous waste and other multi-source wastes.
- Fig. 1 is a structural schematic diagram of the present invention.
- 1 is the material storage system
- 2 is the feeding system
- 3 is the high temperature flue gas interface
- 4 is the medium temperature flue gas interface
- 5 is the hot air system
- 6 is the alkaline removal agent system
- 7 is the integrated disposal system
- 8 10 is a fan
- 9 is a burner
- 10 is a pulverized coal boiler
- 11 is a pollutant removal system.
- the multi-source waste disposal system based on pulverized coal boiler includes a material storage system 1, a feeding system 2, a high-temperature flue gas interface 3, a medium-temperature flue gas interface 4, a hot air system 5, and an alkaline degassing system.
- the outlet of the material storage system 1 is connected to the inlet of the feeding system 2, the outlet of the feeding system 2 is connected to the material inlet of the integrated disposal system 7; the flue between the furnace outlet of the pulverized coal boiler 10 and the economizer is arranged with The high-temperature flue gas interface 3 and the outlet flue of the economizer of the pulverized coal boiler 10 are arranged with a medium-temperature flue gas interface 4.
- the high-temperature flue gas interface 3 and the medium-temperature flue gas interface 4 are connected to the inlet of the flue gas main pipe.
- the outlet is connected to the flue gas inlet of the integrated disposal system 7; the outlet of the hot air system 5 is connected to the air inlet of the integrated disposal system 7; the outlet of the alkaline remover system 6 is connected to the solution inlet of the integrated disposal system 7;
- the outlet of the chemical treatment system 7 is connected to the inlet of the fan 8 , the outlet of the fan 8 is connected to the inlet of the burner 9 , and the outlet of the burner 9 is connected to the furnace of the pulverized coal boiler 10 .
- the multi-source waste disposal method based on pulverized coal boiler of the present invention comprises the following steps:
- the multi-source waste in the material storage system 1 is sent to the integrated disposal system 7 through the feeding system 2, the 600-700°C high-temperature flue gas extracted from the high-temperature flue gas interface 3 and the 300- 400°C medium-temperature flue gas is mixed to form a mixed flue gas with a temperature of 550-600°C.
- the flue gas is sent into the integrated disposal system 7 through the flue gas main pipe, the 300°C hot air generated by the hot air system 5 is sent into the integrated disposal system 7 through the pipeline, and the alkaline substances (NaOH or Ca (OH) 2 ) into the integrated disposal system 7.
- the multi-source waste is dried, carbonized, degreased, deacidified, pulverized and transported in the integrated disposal system 7 through direct contact between the mixed flue gas, hot air and alkaline remover and the multi-source waste Integrated treatment, in which, the function of high-temperature flue gas is to dry and carbonize multi-source waste; the function of hot air is to convert the carbon of multi-source waste into combustible gases such as CO as much as possible during the integrated treatment process, and will generate The macromolecule tar is converted into small molecular gas or solid; the role of the alkaline remover is to remove HCl and HF and other gases generated during the integrated disposal process, and generate calcium chloride and calcium fluoride with high stability and other substances. Among them, according to the physical and chemical characteristics of multi-source waste and the amount of tar and acid gas generated during the integrated disposal process, determine whether the hot air system 5 and the alkali removal system 6 are put into operation and the size of the amount of operation.
- the temperature of the product output by the integrated disposal system 7 is determined according to the physical and chemical characteristics of multi-source waste, generally about 200-350°C, and enters the furnace of the pulverized coal boiler 10 through the airtight pipeline through the fan 8 and the burner 9 for harmless incineration
- the pollutants produced by incineration are efficiently removed by the original pollutant removal system 11 at the tail of the pulverized coal boiler 10 .
- the amount of waste to be disposed of is based on the fact that the content of heavy metals in the fly ash reaches the standard after the pulverized coal boiler 10 disposes of multi-source waste.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Disclosed are a multi-source waste disposal system and a method, based on a pulverized coal-fired boiler. The multi-source waste disposal system comprises a material storage system, a hot air system, an alkaline removal agent system, an integrated disposal system, a combustor, a pulverized coal-fired boiler and a pollutant removal system. An outlet of the material storage system is connected to a material inlet of the integrated disposal system; a high-temperature flue gas interface is arranged on a flue between a furnace outlet of the pulverized coal-fired boiler and an economizer, a medium-temperature flue gas interface is arranged on an economizer outlet flue of the pulverized coal-fired boiler, and the high-temperature flue gas interface and the medium-temperature flue gas interface are connected to a flue gas inlet of the integrated disposal system; an outlet of the hot air system is connected to an air inlet of the integrated disposal system; an outlet of the alkaline removal agent system is connected to a solution inlet of the integrated disposal system; an outlet of the integrated disposal system is connected to an inlet of the combustor, and an outlet of the combustor is connected to a furnace of the pulverized coal-fired boiler. The present system and method can achieve disposal of multi-source waste.
Description
本发明属于多源废弃物处置领域，涉及一种基于煤粉锅炉的多源废弃物处置系统及方法。The invention belongs to the field of multi-source waste disposal, and relates to a multi-source waste disposal system and method based on a pulverized coal boiler.
随着城市化进程加快，多源废弃物产量急速增加，现有的环保设施处置能力呈现不足，且国民的环保意识逐渐提高，因此实现对多源废弃物的资源化及无害化处置成为各当地政府难题。燃煤电厂煤粉锅炉具有热电丰富、炉膛燃烧温度高及尾部环保设施齐全等有利条件，作为废弃物焚烧处置的一种新途径，备受国家及行业关注。但多源废弃物干湿形态各异不能满足煤粉锅炉悬浮燃烧的特殊要求，制约了废弃物处置在火电行业的发展，此外，废弃物中Cl元素含量均较高，焚烧过程中会产生大量的HCl气体，会对锅炉水冷壁造成严重腐蚀，影响原锅炉系统运行安全性；部分废弃物中重金属含量较高，进行大量掺烧时会造成锅炉系统产生的煤粉灰中重金属含量超标，影响粉煤灰的综合利用。上述因素及潜在风险造成利用煤粉锅炉处置多源废弃物发展严重滞后，加上火电机组利用小时数低等现状，导致国家的大型设备利用率低，通过新建垃圾电厂或焚烧炉等工艺，造成社会投资资金及土地浪费。With the acceleration of urbanization, the output of multi-source waste is increasing rapidly, the disposal capacity of existing environmental protection facilities is insufficient, and the awareness of environmental protection of the people is gradually improving. local government problems. Pulverized coal boilers in coal-fired power plants have favorable conditions such as rich heat and electricity, high furnace combustion temperature and complete environmental protection facilities at the tail. As a new way of waste incineration disposal, they have attracted the attention of the country and the industry. However, the different dry and wet forms of waste from multiple sources cannot meet the special requirements of the suspension combustion of pulverized coal boilers, which restricts the development of waste disposal in the thermal power industry. In addition, the content of Cl in waste is relatively high, and a large amount of chlorine will be generated during the incineration process. The HCl gas will cause serious corrosion to the water wall of the boiler and affect the operation safety of the original boiler system; some wastes contain high content of heavy metals, and a large amount of mixed combustion will cause the content of heavy metals in the coal dust produced by the boiler system to exceed the standard, affecting Comprehensive utilization of fly ash. The above-mentioned factors and potential risks lead to a serious lag in the development of using pulverized coal boilers to dispose of multi-source wastes. In addition, the current situation of low utilization hours of thermal power units has led to low utilization rates of large-scale equipment in the country. New waste power plants or incinerators and other processes have caused Social investment funds and land waste.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点，提供了一种基于煤粉锅炉的多源废弃物处置系统及方法，该系统及方法能够实现对多源废弃物的处置。The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a pulverized coal boiler-based multi-source waste disposal system and method, which can realize the multi-source waste disposal.
为达到上述目的，本发明所述的基于煤粉锅炉的多源废弃物处置系统包括物料储存系统、热风系统、碱性脱除剂系统、一体化处置系统、燃烧器、煤粉 锅炉及污染物脱除系统；In order to achieve the above purpose, the multi-source waste disposal system based on pulverized coal boiler according to the present invention includes material storage system, hot air system, alkali removal agent system, integrated disposal system, burner, pulverized coal boiler and pollutant removal system;
物料储存系统的出口与一体化处置系统的物料入口连接；煤粉锅炉的炉膛出口至省煤器之间的烟道上布置有高温烟气接口，煤粉锅炉的省煤器出口烟道上布置有中温烟气接口，高温烟气接口及中温烟气接口与一体化处置系统的烟气入口连接；热风系统的出口与一体化处置系统的空气入口连接；碱性脱除剂系统的出口与一体化处置系统的溶液入口连接；一体化处置系统的出口与燃烧器的入口连接，燃烧器的出口与煤粉锅炉的炉膛连接。The outlet of the material storage system is connected to the material inlet of the integrated disposal system; a high-temperature flue gas interface is arranged on the flue between the furnace outlet of the pulverized coal boiler and the economizer, and a medium temperature flue gas interface is arranged on the flue of the economizer outlet of the pulverized coal boiler. The flue gas interface, the high-temperature flue gas interface and the medium-temperature flue gas interface are connected to the flue gas inlet of the integrated disposal system; the outlet of the hot air system is connected to the air inlet of the integrated disposal system; the outlet of the alkaline remover system is connected to the integrated disposal system The solution inlet of the system is connected; the outlet of the integrated disposal system is connected to the inlet of the burner, and the outlet of the burner is connected to the furnace of the pulverized coal boiler.
物料储存系统的出口经给料系统与一体化处置系统的物料入口连接。The outlet of the material storage system is connected with the material inlet of the integrated disposal system through the feeding system.
高温烟气接口及中温烟气接口与烟气母管的入口连接，烟气母管的出口与一体化处置系统的烟气入口连接。The high-temperature flue gas interface and the medium-temperature flue gas interface are connected to the inlet of the flue gas main pipe, and the outlet of the flue gas main pipe is connected to the flue gas inlet of the integrated treatment system.
一体化处置系统的出口经风机与燃烧器的入口连接。The outlet of the integrated disposal system is connected with the inlet of the burner through the fan.
煤粉锅炉的出口与污染物脱除系统连接。The outlet of the pulverized coal boiler is connected with the pollutant removal system.
本发明所述的基于煤粉锅炉的多源废弃物处置方法包括以下步骤：The multi-source waste disposal method based on pulverized coal boiler of the present invention comprises the following steps:
物料储存系统中的多源废弃物送入一体化处置系统中，从高温烟气接口抽取的600-700℃高温烟气与从中温烟气接口抽取的300-400℃中温烟气混合，形成温度为550-600℃的混合烟气，然后送入一体化处置系统中，热风系统产生的300℃热风送入一体化处置系统中，碱性脱除剂系统输出的碱性物质送入一体化处置系统中；The multi-source waste in the material storage system is sent to the integrated disposal system, and the 600-700°C high-temperature flue gas extracted from the high-temperature flue gas interface is mixed with the 300-400°C medium-temperature flue gas extracted from the medium-temperature flue gas interface to form a temperature The mixed flue gas at 550-600°C is sent to the integrated disposal system, the 300°C hot air generated by the hot air system is sent to the integrated disposal system, and the alkaline substances output by the alkaline remover system are sent to the integrated disposal system in the system;
混合烟气、热风及碱性脱除剂与多源废弃物之间通过直接接触的方式在一体化处置系统内对多源废弃物进行干燥、炭化、除油、除酸、粉碎及输送的一体化处理；Mixed flue gas, hot air, alkaline remover and multi-source waste are directly contacted to dry, carbonize, degrease, deacidify, pulverize and transport multi-source waste in an integrated disposal system. treatment;
一体化处置系统输出的产物经燃烧器进入煤粉锅炉的炉膛中进行无害化焚烧。The output products of the integrated disposal system enter the furnace of the pulverized coal boiler through the burner for harmless incineration.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明所述的基于煤粉锅炉的多源废弃物处置系统及方法在具体操作时，高温烟气、热风、碱性脱除剂及废弃物在一体化处置系统内部通过直接接触的 方式进行干燥、炭化、除油、除酸、粉碎及输送的一体化处置，一体化处置系统输出的产物进入煤粉锅炉的炉膛进行焚烧处置，焚烧产生的污染物经尾部污染物脱除设施进行脱除，本发明突破了多源废弃物干湿形态各异不能满足煤粉锅炉悬浮燃烧的技术瓶颈，实现焦油、酸性气体及重金属的有效脱除，实现煤粉锅炉对多源废弃物的资源化及无害化处置，推动固废处置行业及电力行业技术进步，提高国家大型设备使用效率，取代垃圾电厂或焚烧炉等传统工艺，有效节约社会资本及土地面积，适用于污泥、泡沫板、生物质、生活垃圾、河道漂浮物、橡胶布条鞋料、油泥、医废及危废等多源废弃物。In the specific operation of the multi-source waste disposal system and method based on pulverized coal boilers according to the present invention, high-temperature flue gas, hot air, alkali removal agent and waste are dried by direct contact in the integrated disposal system , carbonization, degreasing, deacidification, crushing and transportation integrated disposal, the output products of the integrated disposal system enter the furnace of the pulverized coal boiler for incineration disposal, and the pollutants generated by incineration are removed through the tail pollutant removal facilities, The invention breaks through the technical bottleneck that multi-source wastes have different dry and wet forms and cannot satisfy the suspension combustion of pulverized coal boilers, realizes the effective removal of tar, acid gas and heavy metals, and realizes the recycling and non-recycling of multi-source wastes by pulverized coal boilers. Harmful disposal, promoting technological progress in the solid waste disposal industry and the power industry, improving the efficiency of the use of large-scale national equipment, replacing traditional processes such as waste power plants or incinerators, effectively saving social capital and land area, suitable for sludge, foam boards, and biomass , domestic garbage, river floating objects, rubber cloth strip shoe materials, sludge, medical waste and hazardous waste and other multi-source wastes.
为了更清楚的说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
其中，1为物料储存系统、2为给料系统、3为高温烟气接口、4为中温烟气接口、5为热风系统、6为碱性脱除剂系统、7为一体化处置系统、8为风机、9为燃烧器、10为煤粉锅炉、11为污染物脱除系统。Among them, 1 is the material storage system, 2 is the feeding system, 3 is the high temperature flue gas interface, 4 is the medium temperature flue gas interface, 5 is the hot air system, 6 is the alkaline removal agent system, 7 is the integrated disposal system, 8 10 is a fan, 9 is a burner, 10 is a pulverized coal boiler, and 11 is a pollutant removal system.
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，不是全部的实施例，而并非要限制本发明公开的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要的混淆本发明公开的概念。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于 本发明保护的范围。In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
在附图中示出了根据本发明公开实施例的结构示意图。这些图并非是按比例绘制的，其中为了清楚表达的目的，放大了某些细节，并且可能省略了某些细节。图中所示出的各种区域、层的形状及它们之间的相对大小、位置关系仅是示例性的，实际中可能由于制造公差或技术限制而有所偏差，并且本领域技术人员根据实际所需可以另外设计具有不同形状、大小、相对位置的区域/层。The schematic diagrams of the structures according to the disclosed embodiments of the present invention are shown in the accompanying drawings. The figures are not drawn to scale, with certain details exaggerated and possibly omitted for clarity of presentation. The shapes of various regions and layers shown in the figure and their relative sizes and positional relationships are only exemplary, and may deviate due to manufacturing tolerances or technical limitations in practice, and those skilled in the art may Regions/layers with different shapes, sizes, and relative positions can be additionally designed as needed.
参考图1，本发明所述的基于煤粉锅炉的多源废弃物处置系统包括物料储存系统1、给料系统2、高温烟气接口3、中温烟气接口4、热风系统5、碱性脱除剂系统6、一体化处置系统7、风机8、燃烧器9、煤粉锅炉10及污染物脱除系统11；Referring to Fig. 1, the multi-source waste disposal system based on pulverized coal boiler according to the present invention includes a material storage system 1, a feeding system 2, a high-temperature flue gas interface 3, a medium-temperature flue gas interface 4, a hot air system 5, and an alkaline degassing system. Agent removal system 6, integrated disposal system 7, fan 8, burner 9, pulverized coal boiler 10 and pollutant removal system 11;
物料储存系统1的出口与给料系统2的入口连接，给料系统2的出口与一体化处置系统7的物料入口连接；煤粉锅炉10的炉膛出口至省煤器之间的烟道上布置有高温烟气接口3，煤粉锅炉10的省煤器出口烟道上布置有中温烟气接口4，高温烟气接口3及中温烟气接口4与烟气母管的入口连接，烟气母管的出口与一体化处置系统7的烟气入口连接；热风系统5的出口与一体化处置系统7的空气入口连接；碱性脱除剂系统6的出口与一体化处置系统7的溶液入口连接；一体化处置系统7的出口与风机8的入口连接，风机8的出口与燃烧器9的入口连接，燃烧器9的出口与煤粉锅炉10的炉膛连接。The outlet of the material storage system 1 is connected to the inlet of the feeding system 2, the outlet of the feeding system 2 is connected to the material inlet of the integrated disposal system 7; the flue between the furnace outlet of the pulverized coal boiler 10 and the economizer is arranged with The high-temperature flue gas interface 3 and the outlet flue of the economizer of the pulverized coal boiler 10 are arranged with a medium-temperature flue gas interface 4. The high-temperature flue gas interface 3 and the medium-temperature flue gas interface 4 are connected to the inlet of the flue gas main pipe. The outlet is connected to the flue gas inlet of the integrated disposal system 7; the outlet of the hot air system 5 is connected to the air inlet of the integrated disposal system 7; the outlet of the alkaline remover system 6 is connected to the solution inlet of the integrated disposal system 7; The outlet of the chemical treatment system 7 is connected to the inlet of the fan 8 , the outlet of the fan 8 is connected to the inlet of the burner 9 , and the outlet of the burner 9 is connected to the furnace of the pulverized coal boiler 10 .
本发明所述的基于煤粉锅炉的多源废弃物处置方法包括以下步骤：The multi-source waste disposal method based on pulverized coal boiler of the present invention comprises the following steps:
物料储存系统1中的多源废弃物通过给料系统2送入一体化处置系统7中，从高温烟气接口3抽取的600-700℃高温烟气与从中温烟气接口4抽取的300-400℃中温烟气混合，形成温度为550-600℃的混合烟气，其中，混合烟气的温度根据多源废弃物物性采用不同的高温烟气及中温烟气抽取比例进行调节，随后混合烟气通过烟气母管送入一体化处置系统7中，热风系统5产生的300℃热风通过管道送入一体化处置系统7中，碱性脱除剂系统6输出的碱性物质(NaOH或Ca(OH)
2)送入一体化处置系统7中。
The multi-source waste in the material storage system 1 is sent to the integrated disposal system 7 through the feeding system 2, the 600-700°C high-temperature flue gas extracted from the high-temperature flue gas interface 3 and the 300- 400°C medium-temperature flue gas is mixed to form a mixed flue gas with a temperature of 550-600°C. The flue gas is sent into the integrated disposal system 7 through the flue gas main pipe, the 300°C hot air generated by the hot air system 5 is sent into the integrated disposal system 7 through the pipeline, and the alkaline substances (NaOH or Ca (OH) 2 ) into the integrated disposal system 7.
混合烟气、热风及碱性脱除剂与多源废弃物之间通过直接接触的方式在一体化处置系统7内对多源废弃物进行干燥、炭化、除油、除酸、粉碎及输送的一体化处理，其中，高温烟气的作用是干燥及炭化多源废弃物；热风的作用是在一体化处置过程中将多源废弃物的碳尽量多的转化成CO等可燃气体，并将产生的大分子焦油转化为小分子气体或固体；碱性脱除剂的作用是将一体化处置过程中产生的HCl及HF等气体进行脱除，生成稳定性极高的氯化钙和氟化钙等物质。其中，根据多源废弃物理化特性及一体化处置过程中焦油、酸性气体的生成量确定热风系统5及碱性脱除剂系统6是否投运以及投运量的大小。The multi-source waste is dried, carbonized, degreased, deacidified, pulverized and transported in the integrated disposal system 7 through direct contact between the mixed flue gas, hot air and alkaline remover and the multi-source waste Integrated treatment, in which, the function of high-temperature flue gas is to dry and carbonize multi-source waste; the function of hot air is to convert the carbon of multi-source waste into combustible gases such as CO as much as possible during the integrated treatment process, and will generate The macromolecule tar is converted into small molecular gas or solid; the role of the alkaline remover is to remove HCl and HF and other gases generated during the integrated disposal process, and generate calcium chloride and calcium fluoride with high stability and other substances. Among them, according to the physical and chemical characteristics of multi-source waste and the amount of tar and acid gas generated during the integrated disposal process, determine whether the hot air system 5 and the alkali removal system 6 are put into operation and the size of the amount of operation.
一体化处置系统7输出的产物温度根据多源废弃物理化特性确定，一般约200-350℃左右，通过密闭管道依次经风机8及燃烧器9进入煤粉锅炉10的炉膛中进行无害化焚烧，焚烧产生的污染物通过煤粉锅炉10尾部原有的污染物脱除系统11进行高效脱除。The temperature of the product output by the integrated disposal system 7 is determined according to the physical and chemical characteristics of multi-source waste, generally about 200-350°C, and enters the furnace of the pulverized coal boiler 10 through the airtight pipeline through the fan 8 and the burner 9 for harmless incineration The pollutants produced by incineration are efficiently removed by the original pollutant removal system 11 at the tail of the pulverized coal boiler 10 .
废弃物的处置量以煤粉锅炉10处置多源废弃物后粉煤灰中重金属含量达标为依据。The amount of waste to be disposed of is based on the fact that the content of heavy metals in the fly ash reaches the standard after the pulverized coal boiler 10 disposes of multi-source waste.
以上仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
Claims (6)
- 一种基于煤粉锅炉的多源废弃物处置系统，其特征在于，包括物料储存系统(1)、热风系统(5)、碱性脱除剂系统(6)、一体化处置系统(7)、燃烧器(9)、煤粉锅炉(10)及污染物脱除系统(11)；A multi-source waste disposal system based on a pulverized coal boiler, characterized in that it includes a material storage system (1), a hot air system (5), an alkali removal agent system (6), an integrated disposal system (7), Burner (9), pulverized coal boiler (10) and pollutant removal system (11);物料储存系统(1)的出口与一体化处置系统(7)的物料入口连接；煤粉锅炉(10)的炉膛出口至省煤器之间的烟道上布置有高温烟气接口(3)，煤粉锅炉(10)的省煤器出口烟道上布置有中温烟气接口(4)，高温烟气接口(3)及中温烟气接口(4)与一体化处置系统(7)的烟气入口连接；热风系统(5)的出口与一体化处置系统(7)的空气入口连接；碱性脱除剂系统(6)的出口与一体化处置系统(7)的溶液入口连接；一体化处置系统(7)的出口与燃烧器(9)的入口连接，燃烧器(9)的出口与煤粉锅炉(10)的炉膛连接。The outlet of the material storage system (1) is connected to the material inlet of the integrated disposal system (7); a high-temperature flue gas interface (3) is arranged on the flue between the furnace outlet of the pulverized coal boiler (10) and the economizer, and the coal The outlet flue of the economizer of the pulverized boiler (10) is arranged with a medium-temperature flue gas interface (4), and the high-temperature flue gas interface (3) and the medium-temperature flue gas interface (4) are connected to the flue gas inlet of the integrated disposal system (7) The outlet of the hot blast system (5) is connected with the air inlet of the integrated disposal system (7); the outlet of the alkaline removal agent system (6) is connected with the solution inlet of the integrated disposal system (7); the integrated disposal system ( The outlet of 7) is connected with the inlet of the burner (9), and the outlet of the burner (9) is connected with the hearth of the pulverized coal boiler (10).
- 根据权利要求1所述的基于煤粉锅炉的多源废弃物处置系统，其特征在于，物料储存系统(1)的出口经给料系统(2)与一体化处置系统(7)的物料入口连接。The multi-source waste disposal system based on pulverized coal boiler according to claim 1, characterized in that the outlet of the material storage system (1) is connected to the material inlet of the integrated disposal system (7) via the feeding system (2) .
- 根据权利要求1所述的基于煤粉锅炉的多源废弃物处置系统，其特征在于，还包括烟气母管；高温烟气接口(3)及中温烟气接口(4)与烟气母管的入口连接，烟气母管的出口与一体化处置系统(7)的烟气入口连接。The multi-source waste disposal system based on pulverized coal boiler according to claim 1, characterized in that it also includes a flue gas main pipe; the high temperature flue gas interface (3) and the medium temperature flue gas interface (4) and the flue gas main pipe The inlet of the flue gas main pipe is connected with the flue gas inlet of the integrated disposal system (7).
- 根据权利要求1所述的基于煤粉锅炉的多源废弃物处置系统，其特征在于，一体化处置系统(7)的出口经风机(8)与燃烧器(9)的入口连接。The multi-source waste disposal system based on pulverized coal boiler according to claim 1, characterized in that the outlet of the integrated disposal system (7) is connected to the inlet of the burner (9) via a fan (8).
- 根据权利要求1所述的基于煤粉锅炉的多源废弃物处置系统，其特征在于，还包括污染物脱除系统(11)；煤粉锅炉(10)的出口与污染物脱除系统(11)连接。The multi-source waste disposal system based on pulverized coal boiler according to claim 1, further comprising a pollutant removal system (11); the outlet of the pulverized coal boiler (10) and the pollutant removal system (11 )connect.
- 一种基于煤粉锅炉的多源废弃物处置方法，其特征在于，包括以下步骤：A multi-source waste disposal method based on a pulverized coal boiler, characterized in that it comprises the following steps:物料储存系统(1)中的多源废弃物送入一体化处置系统(7)中，从高温烟气接口(3)抽取的600-700℃高温烟气与从中温烟气接口(4)抽取的300-400℃中温烟气混合，形成温度为550-600℃的混合烟气，然后送入一体化处置系统(7)中，热风系统(5)产生的300℃热风送入一体化处置系统(7)中，碱 性脱除剂系统(6)输出的碱性物质送入一体化处置系统(7)中；The multi-source waste in the material storage system (1) is sent to the integrated disposal system (7), and the 600-700°C high-temperature flue gas extracted from the high-temperature flue gas interface (3) is extracted from the medium-temperature flue gas interface (4). 300-400°C medium-temperature flue gas is mixed to form a mixed flue gas with a temperature of 550-600°C, which is then sent to the integrated disposal system (7), and the 300°C hot air generated by the hot air system (5) is sent to the integrated disposal system In (7), the alkaline substance output by the alkaline removing agent system (6) is sent into the integrated disposal system (7);混合烟气、热风及碱性脱除剂与多源废弃物之间通过直接接触的方式在一体化处置系统(7)内对多源废弃物进行干燥、炭化、除油、除酸、粉碎及输送的一体化处理；The multi-source waste is dried, carbonized, degreased, deacidified, pulverized and processed in the integrated disposal system (7) through direct contact between the mixed flue gas, hot air and alkaline remover and the multi-source waste. Integrated processing of transportation;一体化处置系统(7)输出的产物经燃烧器(9)进入煤粉锅炉(10)的炉膛中进行无害化焚烧。Products output from the integrated disposal system (7) enter the furnace of the pulverized coal boiler (10) through the burner (9) for harmless incineration.
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| CN113883528B (en) | 2022-06-10 |
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