A vertical high-viscosity organic hazardous waste fluidized bed incinerator

Abstract

The present invention discloses a vertical high-viscosity organic hazardous waste fluidized bed incinerator, comprising an incinerator main body component and a storage component. The incinerator main body component comprises a furnace body, on which a turbulent combustion zone, a fluidized combustion zone and a burnout zone are sequentially arranged downwardly, the lower end of the burnout zone is connected with a slag discharger, and the upper side of the furnace body is connected with an air outlet pipe; a burner and a waste liquid spray gun are arranged at a position between the fluidized combustion zone and the turbulent combustion zone, and a swirl air nozzle is arranged on the upper side of the waste liquid spray gun; the storage component comprises a storage tank and a jacketed pipe steam conveying pipeline, high-viscosity hazardous waste is pretreated, heated and stored in the storage tank, and is conveyed to the waste liquid spray gun through the jacketed pipe steam conveying pipeline, light droplets in the waste liquid are upwardly burned in the turbulent combustion zone with the swirling high-temperature flue gas, and heavy droplets in the waste liquid are downwardly burned under the action of gravity and enter the fluidized combustion zone for treatment, and the ash is discharged to the slag discharger, thereby solving the problem that high-viscosity waste liquid cannot be burned out, and improving the incineration fullness and incineration efficiency of high-viscosity organic hazardous waste.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical high-viscosity organic hazardous waste fluidized bed incinerators, and in particular to a vertical high-viscosity organic hazardous waste fluidized bed incinerator. Background Art

[0002] Currently, incinerators are environmentally friendly devices that incinerate waste gases, waste liquids, solid waste fuels, medical waste, household waste, and animal carcasses at high temperatures to reduce or minimize the amount of waste. Incinerators utilize a portion of the thermal energy of the incineration medium. Incinerators are categorized as fixed and mobile. Waste incineration technology has been used and developed internationally for decades. More mature types include pulse-throw grate incinerators, mechanical grate incinerators, fluidized bed incinerators, rotary incinerators, and CAO incinerators.

[0003] The patent document with application number "CN202110001350.X" discloses a garbage disposal incinerator, including an incinerator body, a smoke guide pipe, a cyclone separator, a reflux bin, and a reflux pipe. A smoke guide pipe is connected between the top of the incinerator body and the top of the cyclone separator, and a feed pipe is connected between the bottom of the cyclone separator and the top of the reflux bin. The garbage disposal incinerator is equipped with an intermediate feeding pipe and connected to a transverse feeding pipe, a reflux pipe, and a positioning guide pipe. When in use, the high-pressure airflow that causes fly ash to reflux is used to continuously blow the newly added garbage fragments out of the intermediate feeding pipe, and the flow limiting block is used to limit and squeeze the garbage fragments added to the intermediate feeding pipe, so that the garbage fragments can only be burned after entering the top pipe mouth of the intermediate feeding pipe and the incinerator body, thereby effectively preventing the garbage from backfiring in the transverse feeding pipe, affecting the subsequent combustion effect and efficiency.

[0004] Patent document CN201810964652.5 discloses a garbage incinerator comprising a floor, a first circular groove formed in the floor, a first circular plate formed on the lower bottom surface of the first circular groove, a lower surface of the first circular plate fixedly connected to the first circular groove, a second circular groove formed in the middle of the first circular plate's upper surface, a lifting device disposed within the second circular groove, a rotating device disposed above the lifting device, a push-pull device disposed above the rotating device, a fourth rectangular plate disposed on one side of the floor, a control box disposed at the upper end of the fourth rectangular plate, and ten buttons disposed within the control box. The present invention has the advantages of a simple structure and strong practicality.

[0005] In summary, the above patent documents, combined with the prior art, disclose that the existing vertical high-viscosity organic hazardous waste fluidized bed incinerator has the following defects:

[0006] Chemical plant production processes generate highly viscous hazardous organic waste, typically solid or semi-solid at room temperature. Traditionally, rotary incinerators are used for incineration. However, because hazardous waste rapidly liquefies within the kiln, flowing toward the kiln outlet, contact between the waste and air occurs only at the surface, preventing sufficient mixing and combustion. This results in incomplete combustion and low efficiency. Furthermore, rotary kilns require large floor space, complex feed systems, and the need for a secondary combustion chamber, resulting in complex processes and high investment costs. Summary of the Invention

[0007] The purpose of the present invention is to solve the above technical problems and to provide a vertical high-viscosity organic hazardous waste fluidized bed incinerator, which can solve the problem of low incineration efficiency.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A vertical high-viscosity organic hazardous waste fluidized bed incinerator, comprising:

[0010] The incinerator main body assembly includes a furnace body, an emergency discharge chimney is provided along the upper end of the furnace body, and a turbulent combustion zone, a fluidized combustion zone, and a burnout zone are provided downward in sequence. The lower end of the burnout zone is connected to a slag discharger, and the upper side of the furnace body is connected to an air outlet pipe; a burner and a waste liquid spray gun are provided between the fluidized combustion zone and the turbulent combustion zone, and a swirl air nozzle is provided near the upper side of the waste liquid spray gun;

[0011] A storage component includes a storage tank and a jacketed pipe steam delivery pipeline. The output end of the storage tank is connected to the jacketed pipe steam delivery pipeline, and the jacketed pipe steam delivery pipeline is connected to the waste liquid spray gun. High-viscosity hazardous waste is pre-treated, heated and stored in the storage tank, and transported to the waste liquid spray gun through the jacketed pipe steam delivery pipeline. Light droplets in the waste liquid are burned upward in the turbulent combustion zone with the swirling high-temperature flue gas, and heavy droplets in the waste liquid are burned downward under the action of gravity and enter the fluidized combustion zone for treatment, and the ash is discharged into the slag discharger.

[0012] Furthermore, the number of the waste liquid spray guns and the swirl air nozzles are both two, forming two spray gun systems, and the two spray gun systems are distributed on both sides of the furnace body.

[0013] Furthermore, the upper portion of the furnace body is in a tightened shape, the uppermost end of the furnace body is in a platform shape and is provided with a flat end, and the flat end of the furnace body is connected to the emergency relief chimney.

[0014] Furthermore, the fluidized combustion zone is provided with a fluidized nozzle, and a fluidized nozzle is provided at the end of each fluidized nozzle.

[0015] Furthermore, the number of the fluidizing nozzles is more than two, and each of the fluidizing nozzles is arranged to be inclined upward.

[0016] Furthermore, the storage assembly also includes an agitator arranged in the storage tank and a steam-clamped heating jacket arranged outside the storage tank.

[0017] Furthermore, a waste liquid pump is provided on the jacketed pipe steam delivery pipeline.

[0018] Furthermore, an expandable rotary kiln interface is provided on the side of the furnace body.

[0019] Furthermore, the furnace body is provided with an opening corresponding to the expandable rotary kiln interface, and the expandable rotary kiln interface is detachably mounted on the opening.

[0020] Furthermore, the cross-sectional area of ​​the fluidized combustion zone is the same as the cross-sectional area of ​​the turbulent combustion zone, and the cross-sectional area of ​​the fluidized combustion zone is larger than the cross-sectional area of ​​the burnout zone.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] After high-viscosity hazardous waste is stored, heated, and liquefied, it is then pressurized and transported to the waste liquid spray gun via a jacketed steam pipeline and a waste liquid pump. Inside the spray gun, the waste liquid and high-pressure steam mix, impact, and shred, producing waste liquid droplets with a particle size of less than 80 μm. These droplets, sprayed from the spray gun, mix with the surrounding swirling primary air at the high temperature inside the kiln and ignite. Light droplets in the waste liquid are incinerated with the swirling, high-temperature flue gas, while heavy droplets in the waste liquid are incinerated downward by gravity into the fluidized incineration zone. In the fluidized incineration zone, the swirling air generated by the combustion-supporting air entrains unburned droplets in the fluidized zone, where they burn in suspension until they are completely consumed. The ash then falls by gravity into a water-sealed slag remover. This vertical high-viscosity organic hazardous waste fluidized incinerator achieves liquid-phase incineration of high-viscosity organic hazardous waste, while simultaneously resolving the issue of incomplete combustion of high-viscosity waste liquids and improving both the completeness and efficiency of incineration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the present invention;

[0024] Figure 2 This is another structural diagram of the present invention.

[0025] Figure: 100, incinerator main components; 1, furnace body; 2, burnout zone; 3, fluidized combustion zone; 4, turbulent combustion zone; 5, slag discharger; 6, burner; 7, waste liquid spray gun; 8, swirl air nozzle; 9, emergency vent chimney; 10, fluidized nozzle; 11, fluidized nozzle; 12, exhaust pipe; 13, expandable rotary kiln interface;

[0026] 200. Storage assembly; 22. Storage tank; 23. Agitator; 24. Steam heating jacket; 25. Jacketed steam delivery pipeline; 26. Waste liquid pump. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See also Figure 1-2 , a vertical high-viscosity organic hazardous waste fluidized bed incinerator, comprising:

[0031] The incinerator main body assembly 100 includes a furnace body 1. The furnace body 1 is provided with an emergency discharge chimney 9 along the top, and is provided with a turbulent combustion zone 4, a fluidized combustion zone 3, and a burnout zone 2 in sequence downward. The lower end of the burnout zone 2 is connected to a slag discharger 5, and an air outlet pipe 12 is connected to the upper side of the furnace body 1; a burner 6 and a waste liquid spray gun 7 are provided between the fluidized combustion zone 3 and the turbulent combustion zone 4, and a swirl air nozzle 8 is provided near the upper side of the waste liquid spray gun 7;

[0032] The storage component 200 includes a storage tank 22 and a jacketed pipe steam delivery pipe 25. The output end of the storage tank 22 is connected to the jacketed pipe steam delivery pipe 25, and the jacketed pipe steam delivery pipe 25 is connected to the waste liquid spray gun 7. High-viscosity hazardous waste is pre-treated, heated and stored in the storage tank 22, and transported to the waste liquid spray gun 7 through the jacketed pipe steam delivery pipe 25. Light droplets in the waste liquid are burned upward in the turbulent combustion zone 4 along with the swirling high-temperature flue gas, and heavy droplets in the waste liquid are burned downward under the action of gravity and enter the fluidized combustion zone 3 for treatment, and the ash is discharged into the slag discharger 5.

[0033] Technical effect: In the present application, high-viscosity hazardous waste is stored, heated and liquefied, and then pressurized through the jacketed steam delivery pipe 25 and the waste liquid pump and transported to the waste liquid spray gun 7. The waste liquid and high-pressure steam are mixed, collided and shredded in the spray gun to produce waste liquid droplets with a particle size of less than 80 μm, which are sprayed out from the spray gun and mixed with the primary air injected by the surrounding vortex at the high temperature in the kiln and ignited. The light droplets in the waste liquid are burned upward with the vortex high-temperature flue gas, and the heavy droplets in the waste liquid are burned downward with gravity into the fluidized incineration zone. In the fluidized incineration zone, the vortex air generated by the combustion-supporting air entrains the unburned droplets in the fluidized zone, and burns in a suspended state in the fluidized zone until it is burned out. The ash falls into the water-sealed slag remover under gravity. The vertical high-viscosity organic hazardous waste fluidized incinerator can realize liquid-phase incineration of high-viscosity organic hazardous waste, while solving the problem that high-viscosity waste liquid cannot be burned out, thereby improving the incineration completeness and incineration efficiency of high-viscosity organic hazardous waste.

[0034] Working principle: When using a vertical high-viscosity organic hazardous waste fluidized bed incinerator, it is generally divided into the following steps:

[0035] 1. High-viscosity hazardous waste is pre-treated, heated, liquefied, and stored in a storage tank 22.

[0036] 2. The storage tank 22 is provided with an agitator 23 and a steam heating jacket 24. The waste liquid is pressurized through a jacketed steam delivery pipe 25 and a waste liquid pump 26 and then transported to the waste liquid spray gun 7 in the turbulent incineration zone of the vertical high-viscosity organic hazardous waste fluidized bed incinerator;

[0037] 3. The waste liquid is mixed and collided with the waste liquid spray gun 7, and is shredded to produce waste liquid droplets with a particle size of less than 80 μm. The waste liquid droplets are sprayed out from the spray gun and mixed with the primary air injected by the surrounding vortex under the action of the high temperature in the kiln, and ignited;

[0038] 4. Light droplets in the waste liquid are burned upward in the turbulent combustion zone 4 along with the swirling high-temperature flue gas, while heavy droplets in the waste liquid are burned downward under the action of gravity into the fluidized combustion zone 3;

[0039] 5. In the fluidized combustion zone 3, the swirling air generated by the combustion-supporting air entrains the unburned liquid droplets in the fluidized zone and burns them in a suspended state in the fluidized zone until they are completely burned;

[0040] 6. The ash falls into the slag discharger 5 by gravity.

[0041] Preferably, the waste liquid spray gun 7 and the swirl air nozzle 8 are both two in number and form two spray gun systems. The two spray gun systems are distributed on both sides of the furnace body 1, thereby increasing the waste liquid mixing contact area. Specifically, the waste liquid spray gun 7 is equipped with a hazardous waste storage and heating system, a conveying and heating system, and steam is used as the atomizing gas source. As a further improvement to the above technical solution, the waste liquid spray gun 7 adopts steam atomization and has a quick-disassembly structure for greater convenience and slipperiness. A flame monitor and fire-viewing mirror are provided obliquely above the spray gun.

[0042] Preferably, the upper part of the furnace body 1 is in a tightened shape, and the uppermost end of the furnace body 1 is in a platform shape and is provided with a flat end, and the flat end of the furnace body 1 is connected to the emergency vent chimney 9. The fluidized combustion zone 3 is provided with a fluidizing nozzle 10, and a fluidizing nozzle 11 is provided at the end of each of the fluidizing nozzles 10. Specifically, the number of the fluidizing nozzles 10 is more than two, and each of the fluidizing nozzles 10 is tilted upward to further improve the mixing efficiency. The furnace body 1 is a vertical structure, and the upper and lower ends of the furnace body 1 are conical structures. The upper end of the furnace body 1 is fixedly connected to an exhaust pipe 12, and the upper part of the kiln body is an emergency chimney, which saves space and has a simple process compared to the traditional "rotary kiln + secondary combustion chamber" structure.

[0043] In a preferred embodiment, multiple fluidizing air ports are provided in the lower third of the furnace body 1, forming a swirling fluidizing air flow in the circumferential direction. The fluidizing air ports maintain a certain angle with the horizontal direction. Air duct valves are provided at the branches of the fluidizing air duct, and fluidizing nozzles are provided at the outlets of the fluidizing air ducts. The fluidizing nozzles are arranged within the refractory material and are made of heat-resistant steel or high-temperature resistant non-metallic materials.

[0044] Preferably, the storage assembly 200 further includes an agitator 23 disposed in the storage tank 22 and a steam jacket 24 disposed outside the storage tank 22. A waste liquid pump 26 is provided on the jacketed steam delivery pipe 25, and the pressurization effect improves combustion efficiency.

[0045] Preferably, an expandable rotary kiln interface 13 is provided on the side of the furnace body 1. The furnace body 1 is provided with an opening corresponding to the expandable rotary kiln interface 13, and the expandable rotary kiln interface 13 is detachably mounted on the opening, which is easy to install.

[0046] Preferably, the cross-sectional area of ​​the fluidized combustion zone 3 is the same as that of the turbulent combustion zone 4, and the cross-sectional area of ​​the fluidized combustion zone 3 is larger than that of the burnout zone 2. The entire device has a novel structure, ingenious design, strong applicability, and is easy to promote.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0048] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A vertical high-viscosity organic hazardous waste fluidized bed incinerator, characterized in that: include: The incinerator main body assembly includes a furnace body, an emergency discharge chimney is provided along the upper end of the furnace body, and a turbulent combustion zone, a fluidized combustion zone, and a burnout zone are provided downward in sequence. The lower end of the burnout zone is connected to a slag discharger, and the upper side of the furnace body is connected to an air outlet pipe; a burner and a waste liquid spray gun are provided between the fluidized combustion zone and the turbulent combustion zone, and a swirl air nozzle is provided near the upper side of the waste liquid spray gun; A storage assembly, the storage assembly comprising a storage tank and a jacketed steam delivery pipeline, wherein an output end of the storage tank is in communication with the jacketed steam delivery pipeline, and the jacketed steam delivery pipeline is connected to the waste liquid spray gun; High-viscosity hazardous waste is pre-treated, heated, and stored in a storage tank, and then transported to the waste liquid spray gun through the jacketed steam delivery pipeline. Light droplets in the waste liquid are burned upward in the turbulent combustion zone along with the swirling high-temperature flue gas, and heavy droplets in the waste liquid are burned downward under the action of gravity and enter the fluidized combustion zone for treatment, and the ash is discharged into the slag discharger. The number of the waste liquid spray guns and swirl air nozzles is two, forming two spray gun systems, and the two spray gun systems are distributed on both sides of the furnace body; The fluidized combustion zone is provided with a fluidized nozzle, and the end of each fluidized nozzle is provided with a fluidized nozzle.

2. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: The upper portion of the furnace body is in a tightened shape, the uppermost end of the furnace body is in a platform shape and is provided with a flat end, and the flat end of the furnace body is communicated with the emergency relief chimney.

3. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: The number of the fluidizing nozzles is more than two, and each of the fluidizing nozzles is arranged to be inclined upward.

4. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: The storage assembly further comprises a stirrer arranged in the storage tank and a steam-clamped heating jacket arranged outside the storage tank.

5. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: A waste liquid pump is provided on the jacketed pipe steam delivery pipeline.

6. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: An expandable rotary kiln interface is provided on the side of the furnace body.

7. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: The furnace body is provided with an opening corresponding to the expandable rotary kiln interface, and the expandable rotary kiln interface is detachably mounted on the opening.

8. The vertical high-viscosity organic hazardous waste fluidized bed incinerator according to claim 1, characterized in that: The cross-sectional area of ​​the fluidized combustion zone is the same as the cross-sectional area of ​​the turbulent combustion zone, and the cross-sectional area of ​​the fluidized combustion zone is larger than the cross-sectional area of ​​the burnout zone.

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