WO2023207091A1 - 一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统 - Google Patents

一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统 Download PDF

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WO2023207091A1
WO2023207091A1 PCT/CN2022/135807 CN2022135807W WO2023207091A1 WO 2023207091 A1 WO2023207091 A1 WO 2023207091A1 CN 2022135807 W CN2022135807 W CN 2022135807W WO 2023207091 A1 WO2023207091 A1 WO 2023207091A1
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Prior art keywords
solidification
stabilization
mold bag
bag filling
fly ash
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PCT/CN2022/135807
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English (en)
French (fr)
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郭涛
程熠晴
王建
纪涛
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天津壹鸣环境科技股份有限公司
天津壹鸣环境污染治理有限公司
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Publication of WO2023207091A1 publication Critical patent/WO2023207091A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B2101/00—Type of solid waste
    • B09B2101/30—Incineration ashes
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the utility model relates to the technical field of solid waste treatment, and in particular to a waste incineration fly ash solidification and stabilization and mold bag filling and forming system.
  • Waste treatment and disposal methods usually include sanitary landfill, incineration and composting. Among them, incineration treatment has gradually become the mainstream trend of domestic waste treatment in my country because of its advantages such as short processing time, significant reduction, good resource utilization effect and recovery of waste heat. However, 3 to 6% of fly ash will be produced during the incineration process, and the current fly ash output is 6 to 8 million tons/year. Fly ash contains high levels of heavy metals and dioxins that are easily leached. According to relevant national regulations, fly ash from domestic waste incineration is classified as hazardous waste.
  • fly ash landfill is the first choice for most waste incineration power plants and government departments, accounting for more than 90%. It is currently the mainstream method of fly ash disposal.
  • fly ash After the fly ash has been solidified/stabilized and pre-treated to meet the relevant requirements of pollution control standards, it can be buried in domestic waste landfills and buried in separate zones; or it can be buried in special landfills for fly ash. Landfill disposal of domestic waste incineration fly ash generally adopts dry direct landfill method, including pre-treatment technologies such as bags, tons, bricks, briquetting, and granulation molding. As environmental protection requirements become increasingly stringent, bagged landfill methods are usually used. Application practice shows that the landfill methods in the existing technology have the following problems:
  • the utility model provides a solidification and stabilization of waste incineration fly ash and a mold bag filling and molding system.
  • the utility model can increase the landfill capacity utilization rate by 25% to 30%: the fly ash mold bag itself has a large volume reduction, which is relatively large. Tight compaction and no gaps between adjacent mold bags can effectively improve the landfill capacity utilization rate and achieve stable ground dam filling.
  • the landfill capacity utilization rate can be further increased, breaking through the land utilization of fly ash landfill. Technical and engineering bottlenecks with low efficiency.
  • a waste incineration fly ash solidification and stabilization and mold bag filling and forming system including a raw ash transfer device, a raw ash receiving and storage device, a solidification and stabilization processing device, Solidification and stabilization product pumping device, mold bag filling and sealing packaging device, odor control device, wastewater reuse device, transportation pipeline and circulation pipeline;
  • the outlet end of the original ash transfer device and the original ash receiving and storage device are connected to each other, the outlet end of the original ash receiving and storage device is connected to the solidification and stabilization treatment device, and the outlet end of the solidification and stabilization treatment device is connected to
  • the solidification and stabilization product pumping device is connected to each other; the outlet end of the solidification and stabilization product pumping device is connected to the mold bag filling molding and sealing packaging device, and the solidification and stabilization processing device, the solidification and stabilization processing device are connected to each other.
  • the treatment product pumping device and the mold bag filling and sealing packaging device are all connected to the conveying pipeline, and the conveying pipeline and the odor control device are connected to each other through the odor collection pipe;
  • One end of the mold bag filling, molding and sealing packaging device is connected to each other through the waste water delivery pipe A and the circulation pipeline, and one end of the solidification and stabilization treatment device is connected to the waste water delivery pipe B and the circulation pipeline. are connected to each other, and one end of the solidification and stabilization product pumping device and the circulation pipeline are connected to each other;
  • One end of the wastewater reuse device and the circulation pipeline are connected to each other through a return conveying pipe, and the other end of the wastewater reuse device is connected to the solidification and stabilization treatment device through a return pipe.
  • one end of the mold bag filling molding and sealing packaging device is connected to a secondary chelating treatment device for unqualified solidification and stabilization products, and the secondary chelation treatment device for unqualified solidification and stabilization products is used for solidification and stabilization.
  • the processed product undergoes secondary treatment.
  • the raw ash transfer device is any one of a closed tank truck or a pneumatic conveying pipeline.
  • the raw ash receiving and storage device is composed of a pneumatic conveying pipeline and a storage device.
  • the storage device is one or more combinations of a welded steel plate silo, a spiral steel plate silo, and a concrete silo.
  • the solidification and stabilization treatment device is composed of a raw ash conveying device, a raw ash metering device, a stirring and mixing device, a new water replenishing device and a chemical dosing device.
  • the raw ash conveying device is one or more combinations of a butterfly valve, a flapper valve, a rotary unloader, a screw conveyor, and a belt;
  • the raw ash measuring device is a measuring spiral scale, a belt scale, or a weighing bucket.
  • the mixing device is one of an intermittent single-shaft mixer, an intermittent two-shaft mixer, an intermittent three-shaft mixer, a continuous single-shaft mixer, a continuous two-shaft mixer, and a continuous three-shaft mixer.
  • the medicament added in the medicament adding device is one or a combination of heavy metal stabilizers, emergency curing agents, anti-blocking agents, flow aids, pumping agents, and deodorants. .
  • the solidification and stabilization product pumping device includes a solidification and stabilization product feeding device and a conveying device, and the conveying device is composed of a pumping mechanism and a conveying pipeline.
  • the solidification and stabilization product feeding device is one or a combination of a temporary storage chute and a conveying feeder;
  • the pumping mechanism is one of a plunger pump, a hose pump, a diaphragm pump, and a piston pump.
  • the transmission pipeline adopts one or several combinations of flanged steel pipes, clamped steel pipes, and clamped rubber hoses.
  • the mold bag filling, forming and sealing packaging device includes a mold bag filling device, a mold bag and a mold bag odor control device.
  • the mold bag odor control device is composed of an air extraction fan, an air extraction pipe and a control valve.
  • the odor control device has a centralized odor treatment mechanism.
  • the centralized odor treatment mechanism is one or a combination of a water washing spray device, a pickling spray device, a high-energy plasma treatment device, and an activated carbon adsorption device.
  • this utility model provides a waste incineration fly ash solidification and stabilization and mold bag filling and forming system.
  • the utility model has the following advantages:
  • the utility model is equipped with a solidification and stabilization product pumping device and a mold bag filling and sealing packaging device.
  • the solidification and stabilization product pumping device includes a solidification and stabilization product feeding device and a conveying device.
  • the conveying device Composed of a pumping mechanism and a conveying pipeline, the mold bag filling, forming and sealing packaging device includes a mold bag filling device, a mold bag and a mold bag odor control device.
  • the pumping device can utilize the landfill storage capacity by solidifying and stabilizing the product. The rate increases by 25% to 30%: the fly ash mold bag body itself has a large volume reduction. Through the mold bag filling molding and sealing packaging device, the adjacent mold bag bodies can be tightly compacted without gaps, which can effectively increase the landfill storage capacity. Utilization rate can be achieved, and stable ground dam landfill can be realized. The utilization rate of landfill storage capacity can be further increased, breaking through the technical and engineering bottleneck of low land utilization rate of fly ash landfill.
  • This utility model enhances environmental friendliness, has no secondary pollution, and effectively solves the problem of wastewater outlet; the overall mechanism of the utility model is sealed throughout the entire process, and molding and packaging are integrated, with no dust, no leakage, and no leakage; the mold bag has zero leakage. , impermeable, no leachate produced.
  • the sealed packaging can avoid the problem of the loss of soluble salts in fly ash and the instability of the pile; 3
  • This utility model can realize the overall laying of mold bags at the bottom of the landfill site, with even load distribution and avoid Damage to the artificial anti-seepage system of the landfill; 4
  • the pile body of this utility model has high stability, and the mold bag filling molding and sealing packaging device has both molding and sealing functions, which can isolate carbonization and oxidation, and the fly ash stabilized product is stable for a long time High sex.
  • Figure 1 is an overall structural block diagram of the utility model, which includes: 1. Raw ash transfer device; 2. Raw ash receiving and storage device; 3. Solidification and stabilization processing device; 4. Solidification and stabilization processing product pumping device; 5. Mold Bag filling, forming and sealing packaging device; 6. Odor control device; 7. Wastewater reuse device; 8. Secondary chelation treatment device for unqualified solidification and stabilization products; 9. Conveying pipeline; 10. Circulation pipeline; 11. Return conveying pipe; 12. Return pipe; 13. Wastewater conveying pipe A; 14. Odor collection pipe; 15. Wastewater conveying pipe B.
  • mounted should be interpreted broadly. , for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be inside two components of connectivity.
  • the specific meanings of the above terms in the present invention may be understood depending on the specific circumstances.
  • FIG. 1 is an overall structural block diagram of the utility model.
  • a waste incineration fly ash solidification and stabilization and mold bag filling and forming system includes a raw ash transfer device 1, a raw ash receiving and storage device 2, a solidification and stabilization device Chemical treatment device 3, solidification and stabilization product pumping device 4, mold bag filling and sealing packaging device 5, odor control device 6, wastewater reuse device 7, transportation pipeline 9 and circulation pipeline 10; the original The outlet end of the ash transfer device 1 and the original ash receiving and storage device 2 are connected to each other. The outlet end of the original ash receiving and storage device 2 is connected to the solidification and stabilization treatment device 3.
  • the outlet of the solidification and stabilization treatment device 3 The outlet end of the solidification and stabilization product pumping device 4 is connected to the mold bag filling and sealing packaging device 5.
  • the device 3, the solidification and stabilization product pumping device 4 and the mold bag filling and sealing packaging device 5 are all connected to the conveying pipeline 9, and the odor collection pipe 14 is passed between the conveying pipeline 9 and the odor control device 6. interconnect;
  • the wastewater reuse device 7 in the present utility model includes a wastewater collection device.
  • the solidification and stabilization treatment device Through the raw ash receiving and storage device 2, the solidification and stabilization treatment device The flushing wastewater generated by the chemical treatment device 3 and the solidification and stabilization treatment product pumping device 4, the landfill leachate that may be generated in the landfill, and the wastewater generated by periodic water changes in the odor centralized treatment facility are transported by the circulation pipeline 10 and the wastewater Pipe A13 and wastewater transport pipe B15 are collected into the wastewater reuse device 7, and the wastewater is reused in the solidification and stabilization treatment device 3 to achieve zero discharge of wastewater;
  • the raw ash transfer device 1 in the present utility model is preferably a closed tank truck.
  • domestic waste incineration fly ash is transferred from the raw ash storage warehouse of the domestic waste incineration power plant to the entrance of the raw ash receiving and storage device through a closed tank truck, and the raw ash transportation volume is about 30 tons each time;
  • the raw ash receiving and storage device 2 in the utility model is composed of a pneumatic conveying pipeline and a storage device.
  • the raw ash is transported from the outlet of the sealed tanker to the storage device through the pneumatic conveying pipe.
  • the raw ash storage device is preferably a spiral steel plate silo, which is To prevent dust from escaping and regulate the pressure in the warehouse, a gas purification and pressure control device is installed on the top of the spiral steel plate warehouse, preferably a bag dust collector and a pressure release/balance valve; in order to prevent the materials in the warehouse from hardening, a heat tracing device is also installed Insulation device, hot air fluidization device or high-pressure air arch breaking device;
  • the solidification and stabilization treatment device 3 in the utility model is composed of a raw ash conveying device, a raw ash metering device, a stirring and mixing device, a new water replenishing device and a chemical dosing device.
  • the raw fly ash is received and stored from the outlet of the raw ash storage device 2 through The manual gate valve and rotary unloader of the raw ash conveying device are transferred to the raw ash metering device.
  • the raw ash metering device is preferably a weighing hopper, and the chemical dosage ratio can be set according to the amount of fly ash set in the weighing hopper;
  • the pharmaceuticals added by the pharmaceutical dosing device are preferably heavy metal stabilizers and flow aids.
  • the dosage of the pharmaceuticals is preferably 5% heavy metal stabilizer and 1% flow aid; the pharmaceuticals can be added through the pharmaceutical dosage
  • the adding device is added to the stirring and mixing device.
  • the medicament adding device includes a medicament storage device, a medicament preparation device, a medicament metering device and a medicament delivery device.
  • the medicament storage device is preferably a PE storage tank, and the medicament preparation device and the medicament metering device are preferably used.
  • the mixing and mixing device is preferably an intermittent twin-shaft mixer, and the mixing time is preferably 6 minutes.
  • the uniformly stirred solidified and stabilized product is produced by the stirring and mixing device.
  • the mixer discharge port discharges the material to the solidification and stabilization product pumping device 4 inlet;
  • the solidification and stabilization treatment product pumping device 4 in the utility model includes a solidification and stabilization treatment product feeding device and a conveying device.
  • the conveying device is composed of a pumping mechanism and a conveying pipeline.
  • the solidification and stabilization treatment product feeding device preferably adopts a temporary Storage chute and screw feeder; the solidification and stabilization product from the solidification and stabilization treatment device outlet 3 passes through the temporary storage chute and the screw feeder to the solidification and stabilization product pumping device 4 inlet.
  • the pumping mechanism is preferably hydraulic For the plunger pump, the outlet of the pumping mechanism is connected to the delivery pipeline.
  • the delivery pipeline is preferably a combination of flange-type steel pipes, clamp-type steel pipes and clamp-type rubber hoses;
  • the mold bag filling, forming and sealing packaging device 5 in the utility model includes a mold bag filling device, a mold bag and a mold bag odor control device.
  • the mold bag odor control device is composed of an air extraction fan, an air extraction pipe and a control valve.
  • the cured and stabilized product is filled into the mold bag in the molding and sealing packaging device from the 4 outlet of the curing and stabilizing product pumping device.
  • the mold bag is impermeable and has both molding and sealing packaging functions. There are multiple mold bags installed on it. Filling port, part of the gas discharged from the filling port is pumped by the exhaust fan and the exhaust pipe to the conveying pipeline 9 and transported to the odor control device 6;
  • the odor generated by the solidification and stabilization treatment device 3, the solidification and stabilization treatment product pumping device 4, and the mold bag filling and sealing packaging device 5 can be collected through the delivery pipeline 9 to the inlet of the odor control device 6, and pass through the odor control device 6
  • the odor centralized treatment mechanism is preferably a combination of a water washing spray device and an acid washing spray device;
  • One end of the mold bag filling, forming and sealing packaging device 5 in the utility model is connected to a secondary chelating treatment device 8 for unqualified solidification and stabilization products, which is used for secondary processing of the solidification and stabilization products.
  • the added agent is added to the mixing device through the agent dosing device.
  • Stir, and the uniformly stirred solidification and stabilization product is discharged from the mixer discharge port to the solidification and stabilization product pumping device 4 inlet, and the solidification and stabilization product from the solidification and stabilization device 3 outlet is temporarily stored in the chute and transported
  • the feeder goes to the inlet of the solidification and stabilization product pumping device 4, and the solidification and stabilization product is filled into the mold bag in the mold bag filling molding and sealing packaging device 5 from the outlet of the solidification and stabilization product pumping device 4.
  • the odor generated in the solidification and stabilization treatment device 3 the solidification and stabilization treatment product pumping device 4 and the mold bag filling, molding and sealing packaging device 5 is collected through the conveying pipeline 9 to the inlet of the odor control device 6, and passes through the odor control device 6.
  • the odors in 6 are handled by centralized treatment institutions.
  • the flushing wastewater generated by the raw ash receiving and storage device 2, the solidification and stabilization treatment device 3 and the solidification and stabilization treatment product pumping device 4, the landfill leachate that may be generated in the landfill, and the wastewater generated by periodic water changes in the odor centralized treatment facility It is collected into the wastewater reuse device 7 through the circulation pipeline 10, the wastewater delivery pipe A15 and the wastewater delivery pipe B16.
  • the unqualified solidification and stabilization treatment product secondary chelating treatment device 8 can be used to perform secondary treatment on the solidification and stabilization treatment product, and then landfill disposal after meeting the relevant national standards.

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  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，包括依次连接的原灰转运装置（1）、原灰接收贮存装置（2）、固化稳定化处理装置（3）、固化稳定化处理产物泵送装置（4）以及模袋充灌成型及密封包装装置（5），其中固化稳定化处理装置（3），固化稳定化处理产物泵送装置（4）以及模袋充灌成型及密封包装装置（5）均与输送管路（9）连接，异味控制装置（6）与输送管路（9）通过异味收集管（14）连接。

Description

一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统 技术领域
本实用新型涉及固体废弃物处理技术领域，尤其涉及一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统。
背景技术
目前，随着国民经济的高速发展和人民生活水平不断提高，我国城市生活垃圾产生量急剧增加，目前我国城镇生活垃圾的年产生量已超过2亿吨，而且还在以每年10％的速度递增。垃圾处理处置方式通常有卫生填埋，焚烧和堆肥，其中焚烧处理因具有处理时间短、减量化显著、资源化效果好以及可回收余热等优点，逐步成为我国生活垃圾处理的主流趋势。但是，焚烧过程中会产生3～6％的飞灰，目前飞灰产量600～800万t/年。飞灰中含有高含量且易浸出的重金属和二噁英，按照国家相关规定生活垃圾焚烧飞灰属于危险废物。
目前，国内大规模工业化的垃圾焚烧飞灰处置方式主要集中于2种：填埋处置、以及水泥窑协同处置或高温烧结资源化，等离子熔融处于中试或示范阶段。由于填埋处置成本相对较低，不受地域及财力的限制，大部分垃圾焚烧电厂以及政府主管部门首选飞灰填埋，占比90％以上，是目前飞灰处置的主流方式。
飞灰经固化/稳定化预处理达到污染控制标准的相关要求后，可进入生活垃圾填埋场填埋，单独分区填埋；或进入飞灰专用填埋场填埋。生活垃圾焚烧飞灰的填埋处置，一般采用干法直接填埋的方式，包括袋装、吨块、砖块、压球、造粒成型等预处理的技术。随着环保要求日益严格，通常采用袋装填埋方式，应用实践表明，现有技术中的填埋方式存在如下问题：
(1)填埋库容利用率低：现有的袋装填埋装置，其袋内飞灰颗粒间空隙 率大，相邻模袋体之间间隙大，不能有效利用填埋库容。
(2)环境友好性差、安全风险高。目前的飞灰稳定化及填埋过程转运环节多、密封性差，存在粉尘颗粒及异味逸散；填埋作业时需借助吊车进行吊装摆放，存在安全隐患；夏秋雨季及大风天气，填埋作业可能无法进行，影响飞灰的安全处置。
由于飞灰常规填埋处置存在库容利用率低、环境友好性差、安全风险高等诸多问题，极大影响了飞灰填埋处置技术的经济性及环保、安全特性。因此，开发一种填埋库容利用率高、集中处置无二次污染、无安全隐患的飞灰填埋处置技术，对于生活垃圾焚烧飞灰经济、环保、安全的规范化填埋意义重大。
实用新型内容
本实用新型提供了一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，本实用新型可以使填埋库容利用率增加25％～30％：飞灰模袋体自身减容大，相邻模袋体之间紧密压实、无间隙，可以有效提高填埋库容利用率，并可实现稳固的地面堆坝填埋，填埋库容利用率可进一步增加，突破了飞灰填埋土地利用率低的技术及工程瓶颈。
本实用新型为解决上述技术问题所采用的技术方案是：一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，包括原灰转运装置、原灰接收贮存装置、固化稳定化处理装置、固化稳定化处理产物泵送装置、模袋充灌成型及密封包装装置、异味控制装置、废水回用装置、输送管路与循环管路；
所述原灰转运装置的出口端与原灰接收贮存装置之间相互连接，原灰接收贮存装置的出口端与所述固化稳定化处理装置相互连接，所述固化稳定化处理装置的出口端与固化稳定化处理产物泵送装置相互连接；所述固化稳定化处理产物泵送装置的出口端与所述模袋充灌成型及密封包装装置相互连接，所述固化稳定化处理装置、固化稳定化处理产物泵送装置与模袋充灌成 型及密封包装装置均与输送管路相互连接，输送管路与所述异味控制装置之间通过异味收集管相互连接；
所述模袋充灌成型及密封包装装置的一端通过废水输送管A与所述循环管路之间相互连接，所述固化稳定化处理装置的一端通过废水输送管B与所述循环管路之间相互连接，所述固化稳定化处理产物泵送装置的一端与所述循环管路之间相互连接；
所述废水回用装置的一端与循环管路之间通过回流输送管相互连接，废水回用装置的另一端通过回流管与所述固化稳定化处理装置相互连接。
进一步，所述模袋充灌成型及密封包装装置的一端连接有不合格固化稳定化处理产物二次螯合处理装置，不合格固化稳定化处理产物二次螯合处理装置用于对固化稳定化处理产物进行二次处理。
进一步，所述原灰转运装置为密闭槽罐车或气力输送管道的任意一种。
进一步，所述原灰接收贮存装置由气力输送管道与贮存装置组成，贮存装置为焊接式钢板仓、螺旋式钢板仓、混凝土仓中的一种或几种组合。
进一步，所述固化稳定化处理装置由原灰输送装置、原灰计量装置、搅拌混合装置、新水补充装置与药剂投加装置组成。
进一步，所述原灰输送装置为蝶阀、插板阀、旋转卸料器、螺旋输送机、皮带中的一种或几种组合；原灰计量装置为计量螺旋秤、皮带秤、称重斗中的一种或几种组合；搅拌混合装置为间歇式单轴搅拌机、间歇式双轴搅拌机、间歇式三轴搅拌机、连续式单轴搅拌机、连续式双轴搅拌机、连续式三轴搅拌机中的一种或几种组合，所述药剂投加装置中所投加药剂为重金属稳定剂、应急固化剂、防堵剂、助流剂、泵送剂、除臭剂中的一种或几种的组合。
进一步，所述固化稳定化处理产物泵送装置包括有固化稳定化处理产物进料装置与输送装置，输送装置由泵送机构与输送管道组成。
进一步，所述固化稳定化处理产物进料装置为暂存溜槽、输送喂料机中 的一种或两种组合；泵送机构为柱塞泵、软管泵、隔膜泵、活塞泵中的一种或几种组合，输送管道采用法兰式钢管、卡箍式钢管、卡箍式胶管中的一种或几种组合。
进一步，所述模袋充灌成型及密封包装装置包括有模袋充灌装置、模袋与模袋异味控制装置，模袋异味控制装置由抽气风机、抽气管道以及控制阀门组成。
进一步，所述异味控制装置具有异味集中处置机构，异味集中处置机构为水洗喷淋装置、酸洗喷淋装置、高能等离子处理装置、活性炭吸附装置中的一种或几种组合。
本实用新型的优点在于：本实用新型提供了一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，本实用新型具有以下优点：
1.本实用新型设置有固化稳定化处理产物泵送装置与模袋充灌成型及密封包装装置，固化稳定化处理产物泵送装置包括有固化稳定化处理产物进料装置与输送装置，输送装置由泵送机构与输送管道组成，模袋充灌成型及密封包装装置包括有模袋充灌装置、模袋与模袋异味控制装置，通过固化稳定化处理产物泵送装置可以使填埋库容利用率增加25％～30％：飞灰模袋体自身减容大，通过模袋充灌成型及密封包装装置可以使相邻模袋体之间紧密压实、无间隙，可以有效提高填埋库容利用率，并可实现稳固的地面堆坝填埋，填埋库容利用率可进一步增加，突破了飞灰填埋土地利用率低的技术及工程瓶颈。
2.本实用新型增强了环境友好性，无二次污染，有效解决废水出路问题；本实用新型整体机构全程密闭，成型与封装一体化进行，无扬尘、无跑冒滴漏；模袋零泌水、不透水，无渗滤液产生。
3.降低安全风险：①飞灰模袋填埋处理过程中无多环节转运环境风险，无需吊装作业，作业环境条件安全，充分保证了工作人员的职业健康，安全 风险明显降低；②本实用新型具有模袋充灌成型及密封包装装置，密封包装可避免飞灰可溶盐流失而使堆体失稳的问题；③本实用新型可实现填埋场底层模袋整体铺设，载荷分布均匀，避免对填埋场人工防渗系统的破坏；④本实用新型的堆体稳定性高，模袋充灌成型及密封包装装置兼具成型及密封功能，可以隔绝碳化氧化，飞灰稳定化产物长期稳定性高。
附图说明
为了更清楚地说明本实用新型具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施方式，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的附图。
图1为本实用新型的整体结构框图，其中：1、原灰转运装置；2、原灰接收贮存装置；3、固化稳定化处理装置；4、固化稳定化处理产物泵送装置；5、模袋充灌成型及密封包装装置；6、异味控制装置；7、废水回用装置；8、不合格固化稳定化处理产物二次螯合处理装置；9、输送管路；10、循环管路；11、回流输送管；12、回流管；13、废水输送管A；14、异味收集管；15、废水输送管B。
具体实施方式
下面将结合附图对本实用新型的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系， 仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可视具体情况理解上述术语在本实用新型中的具体含义。
实施例1：
图1为本实用新型的整体结构框图，如图1所示的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，包括原灰转运装置1、原灰接收贮存装置2、固化稳定化处理装置3、固化稳定化处理产物泵送装置4、模袋充灌成型及密封包装装置5、异味控制装置6、废水回用装置7、输送管路9与循环管路10；所述原灰转运装置1的出口端与原灰接收贮存装置2之间相互连接，原灰接收贮存装置2的出口端与所述固化稳定化处理装置3相互连接，所述固化稳定化处理装置3的出口端与固化稳定化处理产物泵送装置4相互连接；所述固化稳定化处理产物泵送装置4的出口端与所述模袋充灌成型及密封包装装置5相互连接，所述固化稳定化处理装置3、固化稳定化处理产物泵送装置4与模袋充灌成型及密封包装装置5均与输送管路9相互连接，输送管路9与所述异味控制装置6之间通过异味收集管14相互连接；
所述模袋充灌成型及密封包装装置5的一端与所述循环管路10之间相互连接，所述废水回用装置7的一端与循环管路10之间通过回流输送管11相互连接，废水回用装置7的另一端通过回流管12与所述固化稳定化处理装置3相互连接，本实用新型中的废水回用装置7包括有废水收集装置，通过原灰接收贮存装置2、固化稳定化处理装置3与固化稳定化处理产物泵送装置4 产生的冲洗废水，填埋场可能产生的填埋场渗滤液，异味集中处置设施周期换水产生的废水，由循环管路10、废水输送管A13与废水输送管B15收集至废水回用装置7中，将废水回用于固化稳定化处理装置3，实现废水零排放；本实用新型中的所述原灰转运装置1优选为密闭槽罐车，生活垃圾焚烧飞灰通过密闭槽罐车从生活垃圾焚烧电厂的原灰储库转运至原灰接收与贮存装置的进口，每次原灰运输量约为30吨；
本实用新型中的原灰接收贮存装置2由气力输送管道与贮存装置组成，原灰从密闭槽罐车的出口经过气力输送管道输送到贮存装置中，原灰贮存装置优选为螺旋式钢板仓，为避免粉尘外逸并调控仓内压力，在螺旋式钢板仓顶处设有气体净化及压力调控装置，优选布袋收尘器及压力释放/平衡阀；为防止仓内物料板结，还设置有伴热保温装置、热空气流化装置或高压空气破拱装置；
本实用新型中的固化稳定化处理装置3由原灰输送装置、原灰计量装置、搅拌混合装置、新水补充装置与药剂投加装置组成，飞灰原灰从原灰接收贮存装置2出口经原灰输送装置的手动插板阀与旋转卸料器到原灰计量装置中，原灰计量装置优选为称重斗，可以按照称重斗设定的飞灰量，设定药剂投加比例；药剂投加装置添加的药剂优选重金属稳定剂、助流剂，基于飞灰量干基，药剂投加量优选重金属稳定剂5％，助流剂1％的比例进行投加；药剂可以通过药剂投加装置到搅拌混合装置中，药剂投加装置包括有药剂存贮装置、药剂配制装置、药剂计量装置与药剂输送装置，其中药剂存贮装置优选采用PE储罐，药剂配制装置与药剂计量装置优选采用泵、流量计与阀门，原灰与药剂在可以搅拌混合装置中混合搅拌，搅拌混合装置优选采用间歇式双轴搅拌机，搅拌时间优选6min，搅拌均匀的固化稳定化处理产物由搅拌混合装置的搅拌机卸料口卸料至固化稳定化处理产物泵送装置4进口；
本实用新型中的固化稳定化处理产物泵送装置4包括有固化稳定化处理产物 进料装置与输送装置，输送装置由泵送机构与输送管道组成，固化稳定化处理产物进料装置优选采用暂存溜槽与螺旋喂料机；来自固化稳定化处理装置3出口的固化稳定化处理产物，经暂存溜槽以及螺旋喂料机至固化稳定化处理产物泵送装置4进口，泵送机构优选采用液压柱塞泵，泵送机构的出口与输送管道相连接，输送管道优选为法兰式钢管、卡箍式钢管与卡箍式胶管三者的组合；
本实用新型中的模袋充灌成型及密封包装装置5包括有模袋充灌装置、模袋与模袋异味控制装置，模袋异味控制装置由抽气风机、抽气管道以及控制阀门组成，固化稳定化处理产物自固化稳定化处理产物泵送装置4出口被充灌到成型及密封包装装置中的模袋中，模袋不透水、兼具成型及密封包装功能，模袋上设置多个充灌口，其中部分充灌口排出的气体由抽气风机与抽气管道抽至输送管路9中输送至异味控制装置6；
固化稳定化处理装置3、固化稳定化处理产物泵送装置4、模袋充灌成型及密封包装装置5产生的异味，可以通过输送管路9收集至异味控制装置6进口，通过异味控制装置6中的异味集中处置机构处理，异味集中处置机构优选采用水洗喷淋装置与酸洗喷淋装置的组合；
本实用新型中的模袋充灌成型及密封包装装置5的一端连接有不合格固化稳定化处理产物二次螯合处理装置8，用于对固化稳定化处理产物进行二次处理。
工作原理：本实用新型在对垃圾焚烧飞灰进行处理时，生活垃圾焚烧飞灰可以通过密闭槽罐车或气力输送管道从垃圾焚烧电厂的原灰储库转运至原灰接收贮存装置2进口，原灰从密闭槽罐车的出口，通过气力输送管道，输送到原灰贮存装置中，飞灰原灰从原灰接收贮存装置2出口经手动插板阀、旋转卸料器到称重斗处进行称重，按照称重斗设定的飞灰量，设定药剂投加比例并添加，在飞灰成分波动特别大的时候应急添加应急固化剂，添加的药 剂经药剂投加装置到搅拌混合装置中进行搅拌，搅拌均匀的固化稳定化处理产物由搅拌机卸料口卸料至固化稳定化处理产物泵送装置4进口，来自固化稳定化处理装置3出口的固化稳定化处理产物经暂存溜槽与输送喂料机至固化稳定化处理产物泵送装置4进口，固化稳定化处理产物自固化稳定化处理产物泵送装置4出口被充灌到模袋充灌成型及密封包装装置5中的模袋中，其中固化稳定化处理装置3、固化稳定化处理产物泵送装置4与模袋充灌成型及密封包装装置5中产生的异味通过输送管路9收集至异味控制装置6进口，通过异味控制装置6中的异味集中处置机构处理。原灰接收贮存装置2、固化稳定化处理装置3与固化稳定化处理产物泵送装置4产生的冲洗废水，填埋场可能产生的填埋场渗滤液，异味集中处置设施周期换水产生的废水通过循环管路10、废水输送管A15与废水输送管B16收集至废水回用装置7中，废水通过连接在废水回用装置7一端的回流管12回流至固化稳定化处理装置3实现废水回用；当出现固化稳定化处理产物检测不合格时，可以采用不合格固化稳定化处理产物二次螯合处理装置8对固化稳定化处理产物进行二次处理，满足相关国家标准要求后填埋处置。
最后应说明的是：以上各实施例仅用以说明本实用新型的技术方案，而非对其限制；尽管参照前述各实施例对本实用新型进行了详细的说明，本领域的通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本实用新型各实施例技术方案的范围。

Claims (10)

  1. 一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于，包括原灰转运装置(1)、原灰接收贮存装置(2)、固化稳定化处理装置(3)、固化稳定化处理产物泵送装置(4)、模袋充灌成型及密封包装装置(5)、异味控制装置(6)、废水回用装置(7)、输送管路(9)与循环管路(10)；
    所述原灰转运装置(1)的出口端与原灰接收贮存装置(2)之间相互连接，原灰接收贮存装置(2)的出口端与所述固化稳定化处理装置(3)相互连接，所述固化稳定化处理装置(3)的出口端与固化稳定化处理产物泵送装置(4)相互连接；所述固化稳定化处理产物泵送装置(4)的出口端与所述模袋充灌成型及密封包装装置(5)相互连接，所述固化稳定化处理装置(3)、固化稳定化处理产物泵送装置(4)与模袋充灌成型及密封包装装置(5)均与输送管路(9)相互连接，输送管路(9)与所述异味控制装置(6)之间通过异味收集管(14)相互连接；
    所述模袋充灌成型及密封包装装置(5)的一端通过废水输送管A(13)与所述循环管路(10)之间相互连接，所述固化稳定化处理装置(3)的一端通过废水输送管B(15)与所述循环管路(10)之间相互连接，所述固化稳定化处理产物泵送装置(4)的一端与所述循环管路(10)之间相互连接；
    所述废水回用装置(7)的一端与循环管路(10)之间通过回流输送管(11)相互连接，废水回用装置(7)的另一端通过回流管(12)与所述固化稳定化处理装置(3)相互连接。
  2. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述模袋充灌成型及密封包装装置(5)的一端连接有不合格固化稳定化处理产物二次螯合处理装置(8)，不合格固化稳定化处理产物二次螯合处理装置(8)用于对固化稳定化处理产物进行二次处理。
  3. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述原灰转运装置(1)为密闭槽罐车或气力输送管道的任意一种。
  4. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述原灰接收贮存装置(2)由气力输送管道与贮存装置组成，贮存装置为焊接式钢板仓、螺旋式钢板仓、混凝土仓中的一种或几种组合。
  5. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述固化稳定化处理装置(3)由原灰输送装置、原灰计量装置、搅拌混合装置、新水补充装置与药剂投加装置组成。
  6. 根据权利要求5所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述原灰输送装置为蝶阀、插板阀、旋转卸料器、螺旋输送机、皮带中的一种或几种组合；原灰计量装置为计量螺旋秤、皮带秤、称重斗中的一种或几种组合；搅拌混合装置为间歇式单轴搅拌机、间歇式双轴搅拌机、间歇式三轴搅拌机、连续式单轴搅拌机、连续式双轴搅拌机、连续式三轴搅拌机中的一种或几种组合。
  7. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述固化稳定化处理产物泵送装置(4)包括有固化稳定化处理产物进料装置与输送装置，输送装置由泵送机构与输送管道组成。
  8. 根据权利要求7所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述固化稳定化处理产物进料装置为暂存溜槽、输送喂料机中的一种或两种组合；泵送机构为柱塞泵、软管泵、隔膜泵、活塞泵中的一种或几种组合，输送管道采用法兰式钢管、卡箍式钢管、卡箍式胶管中的一种或几种组合。
  9. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述模袋充灌成型及密封包装装置(5)包括有模袋充灌装置、模袋与模袋异味控制装置，模袋异味控制装置由抽气风机、抽气管道以及控制阀门组成。
  10. 根据权利要求1所述的一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统，其特征在于：所述异味控制装置(6)具有异味集中处置机构，异味集中处置机构为水洗喷淋装置、酸洗喷淋装置、高能等离子处理装置、活性炭吸附装置中的一种或几种组合。
PCT/CN2022/135807 2022-04-29 2022-12-01 一种垃圾焚烧飞灰固化稳定化及模袋灌装成型系统 WO2023207091A1 (zh)

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