Garbage treatment system and treatment method

Abstract

The invention discloses a garbage treatment system which comprises a first-stage treatment pipeline internally provided with a first-stage reaction cavity, a second-stage treatment pipeline internally provided with a second-stage reaction cavity and a discharging pipeline internally provided with a settling cavity, the second-stage reaction cavity is communicated with the downstream of the first-stage reaction cavity, and the settling cavity is communicated with the downstream of the second-stage reaction cavity; a first-stage hydrothermal aeration device is arranged at the bottom of the first-stage reaction cavity, a first-stage smoke supply pipe is arranged at the bottom of the first-stage treatment pipeline, a feeding hole is formed in the top of the first-stage treatment pipeline, and a smoke outlet is formed in the top of the first-stage treatment pipeline; a second-stage hydrothermal aeration device is arranged at the bottom of the second-stage reaction cavity; a second-stage smoke supply pipe is arranged at the bottom of the second-stage treatment pipeline; a drain outlet is formed in the bottom of the discharge pipeline. The garbage treatment system can effectively remove calcium ions in fly ash generated after garbage incineration, and is low in treatment cost and high in treatment efficiency. The invention further discloses a treatment method applying the garbage treatment system.

Description

Technical Field

[0001] The present invention relates to the technical field of supporting equipment for waste incineration treatment, and in particular to a waste treatment system and a treatment method using the treatment system. Background Art

[0002] In the field of general waste treatment, especially for the treatment of domestic waste, waste incineration is a common treatment method. In the process of waste incineration, fly ash and smoke are usually generated.

[0003] Generally speaking, the fly ash produced by waste incineration has the characteristics of large output and strong toxicity. At present, the industry's disposal technologies for fly ash produced by waste incineration can be divided into two major technical routes: land disposal and building material utilization. Specifically, the land disposal method is generally to solidify and stabilize the fly ash produced after incineration, and then send it to a safe landfill or sanitary landfill for landfilling; while the building material utilization method usually includes cement kiln co-disposal, high-temperature sintering to make expanded clay or porcelain aggregates, high-temperature melting to make glass building materials, etc., mainly using the fly ash produced by waste incineration as raw materials to add to the production and processing of the above-mentioned various building materials products.

[0004] In recent years, with the continuous improvement of relevant treatment technologies and environmental protection standards, the comprehensive treatment method of fly ash water washing pretreatment combined with building material utilization has become increasingly popular in the market. This fly ash water washing process can effectively reduce the soluble chloride salts and some heavy metals in fly ash, and meet the requirements for subsequent disposal and utilization of fly ash. Therefore, the current research direction at home and abroad is the water washing pretreatment of fly ash.

[0005] However, washing fly ash with water will wash out a large amount of calcium ions and some heavy metals, which must then be removed by water treatment, which requires the consumption of a large amount of reagents (such as sodium carbonate), resulting in relatively high treatment costs. This not only restricts the promotion and application of related waste incineration treatment technologies, but also has an adverse impact on related waste treatment process flows.

[0006] In view of this, how to optimize the treatment of calcium ions in fly ash produced after waste incineration and reduce the cost of waste treatment is an important technical problem that technicians in this field currently need to solve. Summary of the invention

[0007] The object of the present invention is to provide a garbage disposal system, which can effectively remove calcium ions from fly ash produced after garbage incineration, and has low treatment cost and high treatment efficiency. Another object of the present invention is to provide a garbage disposal method using the above garbage disposal system.

[0008] In order to solve the above technical problems, the present invention provides a garbage disposal system, comprising a primary processing pipeline having a primary reaction chamber inside, a secondary processing pipeline having a secondary reaction chamber inside, and a discharge pipeline having a sedimentation chamber inside, wherein the secondary reaction chamber is connected to the downstream of the primary reaction chamber, and the sedimentation chamber is connected to the downstream of the secondary reaction chamber;

[0009] A primary hydrothermal aeration device is provided at the bottom of the primary reaction chamber, a primary smoke supply pipe is also provided at the bottom of the primary treatment pipeline for waste incineration smoke to pass into the primary hydrothermal aeration device, a feed inlet is provided at the top of the primary treatment pipeline for waste incineration ash to pass into the primary reaction chamber, and a smoke exhaust port is also provided at the top of the primary treatment pipeline for smoke to discharge out of the primary reaction chamber;

[0010] A secondary hydrothermal aeration device is disposed at the bottom of the secondary reaction chamber, and a secondary smoke supply pipe is also disposed at the bottom of the secondary treatment pipeline for the waste incineration smoke to pass into the secondary hydrothermal aeration device;

[0011] The bottom of the discharge pipe is provided with a sewage outlet for materials to be discharged from the sedimentation chamber.

[0012] Preferably, it also includes a pulping tank with a stirring chamber inside, the side wall of the pulping tank is provided with a slurry discharge port connected to the downstream of the stirring chamber, a slurry supply pipe is connected between the slurry discharge port and the feed port, the stirring chamber is connected to the upstream of the primary reaction chamber through the slurry supply pipe, and a slurry agitator is arranged in the stirring chamber.

[0013] Preferably, a mixing chamber is further provided inside the primary processing pipeline, the mixing chamber is connected to the top of the primary reaction chamber, and the feed port and the smoke exhaust port are both connected to the top of the mixing chamber, and a mixing agitator is provided in the mixing chamber.

[0014] Preferably, a material level monitoring component cooperating with the mixing chamber and the primary reaction chamber is provided on the primary processing pipeline.

[0015] Preferably, the primary processing pipeline is provided with a primary temperature sensing probe cooperating with the primary reaction chamber and a secondary temperature sensing probe cooperating with the secondary reaction chamber.

[0016] Preferably, the slurry supply pipe is provided with a slurry supply valve capable of controlling the on-off of the slurry supply pipe.

[0017] Preferably, the primary smoke supply pipe and the secondary smoke supply pipe are both connected to the downstream of the smoke discharge port of the waste incineration equipment, and the primary smoke supply pipe and the secondary smoke supply pipe are connected in parallel.

[0018] Preferably, the first-level smoke supply pipe is provided with a first-level induced draft fan capable of driving smoke to pass into the first-level hydrothermal aeration device, and the second-level smoke supply pipe is provided with a second-level induced draft fan capable of driving smoke to pass into the second-level hydrothermal aeration device.

[0019] Preferably, the primary processing pipeline, the secondary processing pipeline and the discharge pipeline are arranged in sequence from top to bottom along the vertical direction.

[0020] The present invention also provides a garbage disposal method, using the garbage disposal system as described in any one of the above items, comprising the steps of:

[0021] The ash generated after the incineration of the garbage is fed into the primary reaction chamber through the feed port, and the smoke generated after the incineration of the garbage is fed into the primary hydrothermal aeration device through the primary smoke supply pipe. The smoke is fed into the primary reaction chamber through the primary hydrothermal aeration device. Under the hydrothermal and aeration effects of the primary hydrothermal aeration device, the bubbles generated by the smoke are fully contacted and mixed with the ash in the primary reaction chamber, so that the carbon dioxide contained in the smoke provides carbonate ions to react with the calcium ions in the ash to form stable calcium carbonate substances.

[0022] The ash material treated in the primary reaction chamber continues to be introduced into the secondary reaction chamber, and at the same time, the secondary hydrothermal aeration device also continuously introduces the smoke sent through the secondary smoke supply pipe into the secondary reaction chamber. Under the hydrothermal and aeration effects of the secondary hydrothermal aeration device, the bubbles generated by the smoke are fully contacted and mixed with the ash material in the secondary reaction chamber, so that the carbon dioxide contained in the smoke provides carbonate ions to react and combine with the residual calcium ions in the ash material to form stable calcium carbonate substances;

[0023] The ash material treated in the secondary reaction chamber is continuously introduced into the sedimentation chamber for sedimentation treatment, and the waste material after the sedimentation treatment is completed is discharged from the sedimentation chamber through the sewage outlet.

[0024] Compared with the above background technology, the garbage disposal system provided by the present invention, during its operation and use, the fly ash material generated after the garbage incineration is fed into the primary reaction chamber through the feed port, and the flue gas generated after the garbage incineration is simultaneously introduced into the primary hydrothermal aeration device through the primary smoke supply pipe, and the flue gas is fed into the primary reaction chamber through the primary hydrothermal aeration device, and under the hydrothermal and aeration effects of the primary hydrothermal aeration device, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the primary reaction chamber, so that the carbon dioxide contained in the flue gas provides carbonate ions, so that these carbonate ions react and combine with the calcium ions in the ash to form stable calcium carbonate substances, thereby completing the first decalcification treatment of the ash; After the first decalcification treatment in the primary reaction chamber, the ash continues to be introduced into the secondary reaction chamber. At the same time, the secondary hydrothermal aeration device also continuously introduces the flue gas sent through the secondary smoke supply pipe into the secondary reaction chamber. Under the hydrothermal and aeration action of the secondary hydrothermal aeration device, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the secondary reaction chamber, so that the carbon dioxide contained in the flue gas provides carbonate ions to react with the residual calcium ions in the ash to form stable calcium carbonate substances, thereby completing the second decalcification treatment of the ash; the ash treated in the secondary reaction chamber continues to be introduced into the sedimentation chamber for sedimentation treatment, and the waste after the sedimentation treatment is completed is discharged from the sedimentation chamber through the sewage outlet. At the same time, in the hydrothermal environment formed by the primary hydrothermal aeration device and the secondary hydrothermal aeration device respectively, the heavy metal ions in the ash will undergo a complexation reaction under the influence of the carbonate ions and other acid ions provided by the flue gas, thereby effectively removing the heavy metal ions in the ash, thereby achieving the purpose of effectively removing the calcium ions and heavy metal ions mixed in the ash. The entire treatment process of the waste treatment system only needs to use the flue gas generated after the incineration of waste as another material to contact and react with the ash, and then combined with the hydrothermal aeration treatment method, it can not only significantly improve the treatment efficiency of calcium ions mixed in the fly ash after the incineration of waste, but also the entire treatment process does not require a large amount of consumption of treatment agents such as sodium carbonate, thereby effectively reducing the entire process cost of waste treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the layout structure of a garbage disposal system provided in a specific embodiment of the present invention.

[0027] in:

[0028] 11-primary processing pipeline; 111-primary reaction chamber; 112-feeding port; 113-smoke exhaust port; 114-mixing chamber; 115-mixing agitator; 116-level meter; 117-primary temperature sensor;

[0029] 12-secondary processing pipeline; 121-secondary reaction chamber; 122-secondary temperature sensing probe;

[0030] 13-discharge pipe; 131-sedimentation chamber; 132-drain port; 133-drain valve;

[0031] 14-first-stage hydrothermal aeration device; 141-first-stage smoke supply pipe; 142-first-stage induced draft fan;

[0032] 15-secondary hydrothermal aeration device; 151-secondary smoke supply pipe; 152-secondary induced draft fan;

[0033] 16-slurry tank; 161-mixing chamber; 162-slurry discharge port; 163-slurry supply pipe; 164-mortar stirrer; 165-slurry supply valve. DETAILED DESCRIPTION

[0034] The core of the present invention is to provide a garbage disposal system, which can effectively remove calcium ions in fly ash generated after garbage incineration, and has low treatment cost and high treatment efficiency; and also provides a garbage disposal method using the above-mentioned garbage disposal system.

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Please refer to Figure 1 .

[0037] In a specific embodiment, the garbage disposal system provided by the present invention includes a primary treatment pipeline 11 having a primary reaction chamber 111 therein, a secondary treatment pipeline 12 having a secondary reaction chamber 121 therein, and a discharge pipeline 13 having a sedimentation chamber 131 therein, wherein the secondary reaction chamber 121 is connected to the downstream of the primary reaction chamber 111, and the sedimentation chamber 131 is connected to the downstream of the secondary reaction chamber 121.

[0038] A primary hydrothermal aeration device 14 is arranged at the bottom of the primary reaction chamber 111, and a primary smoke supply pipe 141 is also arranged at the bottom of the primary treatment pipeline 11 for allowing waste incineration flue gas to pass into the primary hydrothermal aeration device 14, and a feed inlet 112 is arranged at the top of the primary treatment pipeline 11 for allowing waste incineration ash to pass into the primary reaction chamber 111, and the top of the primary treatment pipeline 11 also has a smoke exhaust port 113 for allowing smoke to discharge from the primary reaction chamber 111.

[0039] A secondary hydrothermal aeration device 15 is disposed at the bottom of the secondary reaction chamber 121 , and a secondary smoke supply pipe 151 is also disposed at the bottom of the secondary treatment pipeline 12 for allowing waste incineration smoke to pass into the secondary hydrothermal aeration device 15 .

[0040] The bottom of the discharge pipe 13 has a drain port 132 for discharging materials from the sedimentation chamber 131 . The downstream of the drain port 132 can be directly connected to an ash transport vehicle or a waste collection device for subsequent material storage and transportation and process processing.

[0041] During the operation of the equipment, the fly ash material generated after the incineration of the garbage is fed into the primary reaction chamber 111 through the feed port 112, and the flue gas generated after the incineration of the garbage is fed into the primary hydrothermal aeration device 14 through the primary smoke supply pipe 141, and the flue gas is fed into the primary reaction chamber 111 through the primary hydrothermal aeration device 14. Under the hydrothermal and aeration action of the primary hydrothermal aeration device 14, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the primary reaction chamber 111, so that the carbon dioxide contained in the flue gas provides carbonate ions, so that these carbonate ions react with the calcium ions in the ash to form stable calcium carbonate substances, and the first decalcification treatment of the ash is completed.

[0042] After the first decalcification treatment in the primary reaction chamber 111, the ash continues to be introduced into the secondary reaction chamber 121. Meanwhile, the secondary hydrothermal aeration device 15 also continuously introduces the flue gas sent through the secondary smoke supply pipe 151 into the secondary reaction chamber 121. Under the hydrothermal and aeration effects of the secondary hydrothermal aeration device 15, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the secondary reaction chamber 121, so that the carbon dioxide contained in the flue gas provides carbonate ions to react with the residual calcium ions in the ash to form stable calcium carbonate substances, thereby completing the second decalcification treatment of the ash.

[0043] At the same time, in the hydrothermal environment formed by the primary hydrothermal aeration device 14 and the secondary hydrothermal aeration device 15 respectively, the heavy metal ions in the ash will undergo complexation reaction under the influence of acid ions such as carbonate ions provided by the flue gas, thereby effectively removing the heavy metal ions in the ash, thereby achieving the purpose of effectively removing calcium ions and heavy metal ions mixed in the ash.

[0044] The ash material treated by the secondary reaction chamber 121 is continuously introduced into the sedimentation chamber 131 for sedimentation treatment, and the waste material after the sedimentation treatment is completed is discharged from the sedimentation chamber 131 through the sewage outlet 132. Generally, the sedimentation chamber 131 is a funnel-shaped structure that is wide at the top and narrow at the bottom, and the sewage outlet 132 is arranged at the bottom of the sedimentation chamber 131, so that the material can flow smoothly from the sedimentation chamber 131 to the sewage outlet 132 under the action of its own weight, thereby further improving the material discharge efficiency.

[0045] The entire treatment process of the waste treatment system only needs to use the flue gas generated after the incineration of waste as another material to contact and react with the ash, and then combined with the hydrothermal aeration treatment method, it can not only significantly improve the treatment efficiency of calcium ions mixed in the fly ash after the incineration of waste, but also the entire treatment process does not require a large amount of consumption of treatment agents such as sodium carbonate, thereby effectively reducing the entire process cost of waste treatment.

[0046] Generally speaking, the material fed into the inner chamber of the primary treatment pipeline 11 through the feed port 112 can be ordinary ash after waste incineration, or can be slurry obtained by mixing fly ash produced after waste incineration with water.

[0047] Correspondingly, a pulping tank 16 for making slurry can also be provided in the waste treatment system, and the pulping tank 16 is arranged upstream of the primary treatment pipeline 11. The pulping tank 16 has a stirring chamber 161 capable of accommodating materials inside, and a slurry discharge port 162 connected to the downstream of the stirring chamber 161 is provided on the side wall of the pulping tank 16, and a slurry supply pipe 163 is connected between the slurry discharge port 162 and the feed port 112, and the stirring chamber 161 is connected to the upstream of the primary reaction chamber 111 through the slurry supply pipe 163, and a slurry agitator 164 is provided in the stirring chamber 161.

[0048] During the operation of the equipment, the fly ash or other ash generated after the incineration of the garbage can be fed into the pulping tank 16 through the material inlet provided on the pulping tank 16, and water is introduced into the pulping tank 16, and the slurry agitator 164 is started, so that the ash and water are fully mixed to form slurry by the rotary stirring operation of the slurry agitator 164. Afterwards, the slurry in the pulping tank 16 can be smoothly transported to the feed port 112 through the slurry supply pipe 163, and the slurry can be sent to the chamber inside the primary treatment pipeline 11 through the feed port 112, so as to meet the process treatment needs in the corresponding primary reaction chamber 111 and other chambers. This type of slurry can better adapt to the hydrothermal and aeration environment formed at each hydrothermal aeration device, thereby further optimizing the contact between the ash and the flue gas and the effects of related reactions, making the removal of calcium ions and heavy metal ions in the ash better, and the pH value of the treated ash correspondingly reduced, and making the removal of substances such as carbon dioxide in the flue gas better, thereby making the carbon emission in the flue gas emission process generated after the incineration of garbage correspondingly reduced, thereby achieving coordinated optimization of the treatment effects of fly ash and flue gas generated after the incineration of garbage, thereby further improving the garbage treatment efficiency and reducing the corresponding garbage treatment costs.

[0049] Accordingly, the slurry supply pipe 163 may be provided with a slurry supply valve 165 capable of controlling the on-off of the slurry supply pipe 163. During the operation of the equipment, the on-off of the slurry supply valve 165 and the adjustment of its opening size can be controlled to achieve coordinated control of the supply and supply amount of materials required for the reaction in the downstream chambers such as the primary reaction chamber 111, so as to meet the garbage disposal needs under different working conditions.

[0050] Specifically, a mixing chamber 114 is further provided inside the primary treatment pipeline 11. The mixing chamber 114 is connected to the top of the primary reaction chamber 111, and the feed port 112 and the smoke exhaust port 113 are both connected to the top of the mixing chamber 114. A mixing agitator 115 is provided inside the mixing chamber 114. The slurry fed into the primary treatment pipeline 11 through the feed port 112 will first be further stirred and mixed in the mixing chamber 114 to fully mix the slurry. After that, under the action of gravity sedimentation, the mixed slurry in the mixing chamber 114 will enter the downstream primary reaction chamber 111, and then contact with the flue gas under the hydrothermal environment and aeration of the primary hydrothermal aeration device 14, and complete the removal of calcium ions and heavy metal ions mixed in the ash, and at the same time complete the carbon reduction treatment of the flue gas. The flue gas after the carbon reduction treatment naturally rises and is discharged from the equipment through the smoke exhaust port 113.

[0051] Correspondingly, a material level monitoring component that cooperates with the mixing chamber 114 and the primary reaction chamber 111 can be provided on the primary processing pipeline 11, so that the staff can monitor the material inventory in each chamber inside the primary processing pipeline 11 in real time through the material level monitoring component, thereby flexibly adjusting the amount of material entering and discharged from each chamber according to the working conditions in a timely manner to ensure the smooth and efficient operation of the equipment.

[0052] Furthermore, the material level monitoring assembly can be three material level meters 116 as shown in the figure, and each material level meter 116 is arranged in sequence along the vertical direction, so as to implement multi-position monitoring of the material inside the equipment. Generally, the upper limit position of the material inside the equipment is preferably between the top material level meter 116 and the bottom material level meter 116, and the material level meter 116 in the middle is the best.

[0053] In fact, during the actual assembly and arrangement, the primary processing pipeline 11, the secondary processing pipeline 12 and the discharge pipeline 13 are arranged in sequence from top to bottom in the vertical direction, so that the ash can be smoothly circulated in the mixing chamber 114, the primary reaction chamber 111, the secondary reaction chamber 121 and the sedimentation chamber 131 by utilizing its own weight, thereby eliminating the need for special pumping devices or other material conveying drive devices to complete the smooth transfer of ash between chambers in different processes, thereby further simplifying the component structure of the garbage disposal system and reducing its use cost.

[0054] On this basis, the mixing chamber 114 and the primary reaction chamber 111 are integrated in the same equipment space, that is, in the primary processing pipeline 11. If necessary, the primary processing pipeline 11, the secondary processing pipeline 12 and the discharge pipeline 13 can be integrated and arranged from top to bottom and connected in sequence, so that the garbage disposal system forms a highly integrated pipeline equipment, thereby further optimizing the assembly space utilization of the garbage disposal system and reducing the difficulty of its installation and layout, so that its adaptability to working conditions and ease of use can be correspondingly improved.

[0055] Accordingly, when the chambers are interconnected and arranged in a highly integrated manner, the material level monitoring component can simultaneously complete the coordinated monitoring of the material inventory in the interconnected spaces of the mixing chamber 114, the primary reaction chamber 111, the secondary reaction chamber 121 and even the sedimentation chamber 131, so as to further reduce the difficulty of operating condition monitoring of the garbage disposal system and improve its operating efficiency.

[0056] More specifically, the primary treatment pipeline 11 is provided with a primary temperature sensing probe 117 cooperating with the primary reaction chamber 111 and a secondary temperature sensing probe 122 cooperating with the secondary reaction chamber 121. The temperature sensing probe and the secondary temperature sensing probe 122 can respectively monitor the ambient temperature inside the primary reaction chamber 111 and the secondary reaction chamber 121, so that the staff can adjust the hydrothermal treatment state of the hydrothermal aeration device in time to avoid the adverse effect of the reaction of the corresponding ash and flue gas related substances caused by the excessively high or low ambient temperature in each reaction chamber, thereby further ensuring the operation efficiency of the garbage treatment system and the corresponding decalcification and carbon reduction treatment effects.

[0057] On the other hand, the primary smoke supply pipe 141 and the secondary smoke supply pipe 151 are both connected to the downstream of the smoke exhaust port of the garbage incineration equipment, and the primary smoke supply pipe 141 and the secondary smoke supply pipe 151 are connected in parallel. The parallel arrangement of the pipe structure helps to ensure that the smoke in the primary smoke supply pipe 141 and the secondary smoke supply pipe 151 can be synchronously transported to the primary hydrothermal aeration device 14 and the secondary hydrothermal aeration device 15, thereby effectively ensuring the relevant reaction effects and reaction rates in the primary reaction chamber 111 and the secondary reaction chamber 121, thereby further optimizing the removal efficiency of calcium ions and heavy metal ions in the ash and the treatment effect of reducing the carbon content in the smoke of the garbage treatment system.

[0058] In addition, the primary smoke supply pipe 141 is provided with a primary induced draft fan 142 capable of driving smoke to pass into the primary hydrothermal aeration device 14, and the secondary smoke supply pipe 151 is provided with a secondary induced draft fan 152 capable of driving smoke to pass into the secondary hydrothermal aeration device 15. Each induced draft fan can further improve the smoke conveying efficiency in each smoke supply pipe, ensure that the smoke can be smoothly and efficiently conveyed to each hydrothermal aeration device, and ensure the corresponding hydrothermal and aeration treatment effects.

[0059] It should be noted that the primary hydrothermal aeration device 14 and the secondary hydrothermal aeration device 15 mentioned in the present scheme are usually micro-nano hydrothermal aerators in actual operation applications. The micro-nano hydrothermal aerators are composed of ceramic membrane aeration disks. After the flue gas is blown into the ceramic membrane aeration disks, micro-nano bubbles of 20-50 microns in size are generated. These micro-nano bubbles are evenly distributed in the corresponding reaction chambers. The carbon dioxide in the micro-nano bubbles is fully in contact with the ash in the reaction chamber, thereby increasing the mass transfer reaction effect.

[0060] It should be emphasized that in practical applications, the aspect ratio of the primary reaction chamber 111 and the secondary reaction chamber 121 is greater than 3, so as to increase the residence time of the material in each reaction chamber, so that the ash material and the flue gas can be fully contacted in each reaction chamber, and ensure the full reaction of calcium ions and heavy metal ions with acid ions such as carbonate ions. In general, the residence time of the material in a single reaction chamber should be greater than 1 hour to achieve the best corresponding treatment effect.

[0061] In addition, a drain valve 133 may be provided at the drain port 132 to adjust whether the waste in the sedimentation chamber 131 is discharged by controlling the on and off of the drain valve 133. On this basis, combined with the coordinated control of the opening of the slurry supply valve 165 and the drain valve 133, the material inventory in each reaction chamber and related chamber of the garbage disposal system can be flexibly adjusted to avoid equipment overload due to excessive materials or waste of production capacity due to insufficient materials, so that the garbage disposal system is always in a relatively ideal operating state and its operating cost can be optimized accordingly.

[0062] In a specific embodiment, the garbage disposal method provided by the present invention adopts the garbage disposal system as described above, comprising the steps of:

[0063] The ash generated after the incineration of the garbage is fed into the primary reaction chamber 111 through the feed port 112, and the flue gas generated after the incineration of the garbage is simultaneously introduced into the primary hydrothermal aeration device 14 through the primary smoke supply pipe 141. The flue gas is fed into the primary reaction chamber 111 through the primary hydrothermal aeration device 14. Under the hydrothermal and aeration effects of the primary hydrothermal aeration device 14, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the primary reaction chamber 111, so that the carbon dioxide contained in the flue gas provides carbonate ions to react with the calcium ions in the ash to form stable calcium carbonate substances.

[0064] The ash material treated in the primary reaction chamber 111 continues to be introduced into the secondary reaction chamber 121. Meanwhile, the secondary hydrothermal aeration device 15 also continuously introduces the smoke sent through the secondary smoke supply pipe 151 into the secondary reaction chamber 121. Under the hydrothermal and aeration effects of the secondary hydrothermal aeration device 15, the bubbles generated by the smoke are fully contacted and mixed with the ash material in the secondary reaction chamber 121, so that the carbon dioxide contained in the smoke provides carbonate ions to react with the residual calcium ions in the ash material to form stable calcium carbonate substances.

[0065] The ash material treated in the secondary reaction chamber 121 is continuously introduced into the sedimentation chamber 131 for sedimentation treatment, and the waste material after the sedimentation treatment is completed is discharged from the sedimentation chamber 131 through the sewage outlet 132 .

[0066] Through the above treatment method, in the hydrothermal environment formed by the first hydrothermal aeration device 14 and the second hydrothermal aeration device 15, the calcium ions and heavy metal ions in the ash react under the influence of the carbonate ions and other acid ions provided by the flue gas to generate stable calcium carbonate, and the heavy metal ions are effectively removed by the complex reaction, thereby achieving the purpose of effectively removing the calcium ions and heavy metal ions mixed in the ash. The entire treatment process of the garbage disposal system only needs to use the flue gas generated after the garbage incineration as another material to contact and react with the ash, and then cooperate with the hydrothermal aeration treatment method, which can not only significantly improve the treatment efficiency of the calcium ions mixed in the fly ash after the garbage incineration, but also the entire treatment process does not need to consume a large amount of treatment agents such as sodium carbonate, thereby effectively reducing the process cost of the entire garbage treatment, and the calcium ions in the ash react with substances such as carbon dioxide in the flue gas to form calcium carbonate substances, so that the carbon content of the flue gas can be effectively reduced, so that the flue gas finally discharged can meet the relevant industrial low-carbon emission standards, thereby making the relevant garbage incineration treatment process more environmentally friendly and efficient.

[0067] In summary, the garbage disposal system provided in the present invention, during its operation and use, the fly ash material generated after the garbage incineration is fed into the primary reaction chamber through the feed port, and the flue gas generated after the garbage incineration is simultaneously introduced into the primary hydrothermal aeration device through the primary smoke supply pipe, and the flue gas is fed into the primary reaction chamber through the primary hydrothermal aeration device, and under the hydrothermal and aeration effects of the primary hydrothermal aeration device, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the primary reaction chamber, so that the carbon dioxide contained in the flue gas provides carbonate ions, so that these carbonate ions react with the calcium ions in the ash to form stable calcium carbonate substances, thereby completing the first decalcification treatment of the ash; after a The ash after the first decalcification treatment in the primary reaction chamber continues to be introduced into the secondary reaction chamber, and at the same time, the secondary hydrothermal aeration device also continuously introduces the flue gas sent through the secondary smoke supply pipe into the secondary reaction chamber. Under the hydrothermal and aeration action of the secondary hydrothermal aeration device, the bubbles generated by the flue gas are fully contacted and mixed with the ash in the secondary reaction chamber, so that the carbon dioxide contained in the flue gas provides carbonate ions to react with the residual calcium ions in the ash to form stable calcium carbonate substances, thereby completing the second decalcification treatment of the ash; the ash after the treatment in the secondary reaction chamber continues to be introduced into the sedimentation chamber for sedimentation treatment, and the waste after the sedimentation treatment is completed is discharged from the sedimentation chamber through the sewage outlet. At the same time, in the hydrothermal environment formed by the primary hydrothermal aeration device and the secondary hydrothermal aeration device respectively, the heavy metal ions in the ash will undergo a complex reaction under the influence of the carbonate ions and other acid ions provided by the flue gas, thereby effectively removing the heavy metal ions in the ash, thereby achieving the purpose of effectively removing the calcium ions and heavy metal ions mixed in the ash. The entire treatment process of the waste treatment system only needs to use the flue gas generated after the incineration of waste as another material to contact and react with the ash, and then combined with the hydrothermal aeration treatment method, it can not only significantly improve the treatment efficiency of calcium ions mixed in the fly ash after the incineration of waste, but also the entire treatment process does not require a large amount of consumption of treatment agents such as sodium carbonate, thereby effectively reducing the entire process cost of waste treatment.

[0068] In addition, the garbage treatment method provided in the present invention adopts the garbage treatment system as described above, which can effectively remove calcium ions in the fly ash generated after garbage incineration, and has low treatment cost and high treatment efficiency.

[0069] The above is a detailed introduction to the garbage disposal system provided by the present invention and the garbage disposal method using the garbage disposal system. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A garbage disposal system, characterized in that: It comprises a primary processing pipeline having a primary reaction chamber inside, a secondary processing pipeline having a secondary reaction chamber inside, and a discharge pipeline having a sedimentation chamber inside, wherein the secondary reaction chamber is connected to the downstream of the primary reaction chamber, and the sedimentation chamber is connected to the downstream of the secondary reaction chamber; A primary hydrothermal aeration device is provided at the bottom of the primary reaction chamber, a primary smoke supply pipe is also provided at the bottom of the primary treatment pipeline for waste incineration smoke to pass into the primary hydrothermal aeration device, a feed inlet is provided at the top of the primary treatment pipeline for waste incineration ash to pass into the primary reaction chamber, and a smoke exhaust port is also provided at the top of the primary treatment pipeline for smoke to discharge out of the primary reaction chamber; A secondary hydrothermal aeration device is disposed at the bottom of the secondary reaction chamber, and a secondary smoke supply pipe is also disposed at the bottom of the secondary treatment pipeline for the waste incineration smoke to pass into the secondary hydrothermal aeration device; The bottom of the discharge pipe is provided with a sewage outlet for materials to be discharged from the sedimentation chamber.

2. The garbage disposal system according to claim 1, characterized in that: It also includes a pulping tank with a stirring chamber inside, a slurry discharge port connected to the downstream of the stirring chamber is provided on the side wall of the pulping tank, a slurry supply pipe is connected between the slurry discharge port and the feed port, the stirring chamber is connected to the upstream of the primary reaction chamber through the slurry supply pipe, and a slurry agitator is arranged in the stirring chamber.

3. The garbage disposal system according to claim 2, characterized in that: A mixing chamber is also provided inside the primary processing pipeline, the mixing chamber is connected to the top of the primary reaction chamber, and the feed port and the smoke exhaust port are both connected to the top of the mixing chamber, and a mixing agitator is provided in the mixing chamber.

4. The garbage disposal system according to claim 3, characterized in that: The primary processing pipeline is provided with a material level monitoring component that cooperates with the mixing chamber and the primary reaction chamber.

5. The garbage disposal system according to claim 3, characterized in that: The primary processing pipeline is provided with a primary temperature sensing probe cooperating with the primary reaction chamber and a secondary temperature sensing probe cooperating with the secondary reaction chamber.

6. The garbage disposal system according to claim 2, characterized in that: The slurry supply pipe is provided with a slurry supply valve capable of controlling the on and off of the slurry supply pipe.

7. The garbage disposal system according to claim 1, characterized in that: The primary smoke supply pipe and the secondary smoke supply pipe are both connected to the downstream of the smoke discharge port of the garbage incineration equipment, and the primary smoke supply pipe and the secondary smoke supply pipe are connected in parallel.

8. The garbage disposal system according to claim 7, characterized in that: The first-level smoke supply pipe is provided with a first-level induced draft fan capable of driving smoke to pass into the first-level hydrothermal aeration device, and the second-level smoke supply pipe is provided with a second-level induced draft fan capable of driving smoke to pass into the second-level hydrothermal aeration device.

9. The garbage disposal system according to claim 1, characterized in that: The primary processing pipeline, the secondary processing pipeline and the discharge pipeline are arranged in sequence from top to bottom along the vertical direction.

10. A method for treating garbage, characterized in that: A garbage disposal system according to any one of claims 1 to 9, comprising the steps of: The ash generated after the incineration of the garbage is fed into the primary reaction chamber through the feed port, and the smoke generated after the incineration of the garbage is fed into the primary hydrothermal aeration device through the primary smoke supply pipe. The smoke is fed into the primary reaction chamber through the primary hydrothermal aeration device. Under the hydrothermal and aeration effects of the primary hydrothermal aeration device, the bubbles generated by the smoke are fully contacted and mixed with the ash in the primary reaction chamber, so that the carbon dioxide contained in the smoke provides carbonate ions to react with the calcium ions in the ash to form stable calcium carbonate substances. The ash material treated in the primary reaction chamber continues to be introduced into the secondary reaction chamber, and at the same time, the secondary hydrothermal aeration device also continuously introduces the smoke sent through the secondary smoke supply pipe into the secondary reaction chamber. Under the hydrothermal and aeration effects of the secondary hydrothermal aeration device, the bubbles generated by the smoke are fully contacted and mixed with the ash material in the secondary reaction chamber, so that the carbon dioxide contained in the smoke provides carbonate ions to react and combine with the residual calcium ions in the ash material to form stable calcium carbonate substances; The ash material treated in the secondary reaction chamber is continuously introduced into the sedimentation chamber for sedimentation treatment, and the waste material after the sedimentation treatment is completed is discharged from the sedimentation chamber through the sewage outlet.

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