WO2023284105A1

WO2023284105A1 - Skid-mounted solid waste smoldering treatment system and method

Info

Publication number: WO2023284105A1
Application number: PCT/CN2021/118404
Authority: WO
Inventors: 乔瑜; 杨侠; 冯超; 徐明厚
Original assignee: 华中科技大学
Priority date: 2021-07-13
Filing date: 2021-09-15
Publication date: 2023-01-19
Also published as: CN113566201A; CN113566201B

Abstract

A skid-mounted solid waste smoldering treatment system and method. The system comprises a feeding system, a discharging system, a hydraulic system, a heat and air supply system, a flue gas system, and at least two skid-mounted smoldering reactors (1); a discharge port (101) that can be opened or closed is provided on one side wall of each of the skid-mounted smoldering reactors (1); a hydraulic rod (2) in the hydraulic system is connected to the bottom of a skid-mounted smoldering reactor (1), and said skid-mounted smoldering reactor (1) is, by means of the extension of the hydraulic rod (2), inclined towards the side provided with the discharge port (101); a solid waste reaction product is discharged by means of the discharge port (101) and then enters the discharging system; the heat and air supply system provides the skid-mounted smoldering reactors (1) with the heat and gas required for smoldering, and the at least two skid-mounted smoldering reactors (1) can operate in alternation. At least two skid-mounted smoldering reactors (1) having a simple structure are used to operate in alternation so as to achieve large-scale continuous smoldering treatment, thereby solving the technical problems of current large-scale treatment devices being complex, the occupied area being large, or the continuous treatment effect being poor.

Description

A skid-mounted solid waste smoldering disposal system and method

【Technical field】

The invention belongs to the technical field of organic solid waste disposal, and more specifically relates to a skid-mounted solid waste smoldering disposal system and method.

【Background technique】

Smoldering combustion is a new type of organic solid waste incineration disposal technology. Compared with traditional incineration technology, it has the advantages of low energy consumption and wide fuel adaptability. Especially for sludge, oil sludge, soil, feces, kitchen waste and other low calorific value industrial and domestic organic solid wastes that are difficult to be directly disposed of by traditional incineration processes, smoldering can achieve low calorific value without pre-drying or adding auxiliary fuel. The value of direct incineration disposal of organic solid waste, therefore, has a revolutionary technical advantage.

The use of smoldering technology to realize the large-scale disposal capacity required for the commercial application of organic solid waste disposal. There are three approaches to large-scale smoldering. One is to increase the disposal rate by increasing the number of running batches of smoldering reaction, thereby indirectly increasing the area of smoldering reaction surface, such as patent document CN112197282A; The area of the reaction surface improves the disposal rate per unit time, such as CN210305009U; the third is to reduce the ignition process time and improve the efficiency by realizing the long-term continuous spread of the smoldering reaction surface, such as CN210511726U. Among them, the patent document CN112197282A realizes the batch-sequential smoldering of multi-module materials on the fixed heating air supply base by setting moving guide rails. The disadvantage is that the guide rail structure is too complicated, which is not conducive to system sealing and energy transmission, resulting in the release of heat and odor; and The guide rail structure is prone to jamming during the intensive use of porous media materials, and the equipment investment and maintenance costs are high. The patent document CN210305009U uses refractory bricks to build a larger reaction chamber. Due to the limitation of the ignition process, the reaction chamber occupies a large area, and can only be limited to the construction site for disposal, which has poor flexibility. The patent document CN210511726U realizes the continuous propagation of the smoldering surface within a fixed range by setting an extraction mechanism in the smoldering reactor, but due to the friction between the material and the inner side of the wall and the collapse of the material caused by the smoldering process, the extraction process will cause The destruction of the flatness of the smoldering surface affects its continuous propagation response, resulting in poor continuous treatment effect.

【Content of invention】

In view of the above defects or improvement needs of the prior art, the present invention provides a skid-mounted solid waste smoldering disposal system and method, the purpose of which is to use at least two skid-mounted smoldering reactors with simple structures to operate alternately to realize smoldering Large-scale continuous disposal of fuel, thereby solving the technical problems of complex large-scale disposal equipment, large floor area or poor continuous disposal effect.

In order to achieve the above purpose, according to one aspect of the present invention, a skid-mounted solid waste smoldering disposal system is provided, including a feed system, a discharge system, a hydraulic system, a heating and air supply system, a flue gas system and at least two a skid-mounted smoldering reactor;

Wherein, the side wall of each skid-mounted smoldering reactor is provided with a discharge opening that can be opened or closed. In the hydraulic system, the hydraulic rod is connected with the bottom of the skid-mounted smoldering reactor. long, so that the skid-mounted smoldering reactor is inclined to the side provided with the discharge port, and the solid waste reaction product is discharged through the discharge port and then enters the discharge system. The heat and air supply system is the skid-mounted smoldering reactor The smoldering reactor provides heat and gas required for smoldering, and the at least two skid-mounted smoldering reactors can operate alternately.

Preferably, the skid-mounted smoldering reactor includes a furnace body and a starting device support base arranged from top to bottom, wherein the connection between the furnace body and the starting device is arranged through, and the bottom plate of the starting device is close to one end of the discharge port It is connected with the supporting base through the rotating shaft. One end of the hydraulic rod is set inside the supporting base, and the other end is connected to the bottom plate of the starting device. Through the extension of the hydraulic rod, the furnace body and the starting device are provided with a discharge port through the axial rotation One side of the heating and air supply system is inclined; the heat supply and air supply system includes a heat supply pipe and an air supply pipe, and the heat supply pipe and the air supply pipe are arranged inside the starting device, and the heat supply pipe and the air supply pipe are connected to the furnace through a hollow partition The solid waste reaction materials in the body are separated.

Preferably, the interior of the starting device is filled with a porous medium material, the hollow spacer includes a grid and a wire mesh covering the grid, and the mesh diameter of the wire mesh is smaller than the particle diameter of the porous medium material.

Preferably, there are four skid-mounted smoldering reactors, two of which are arranged symmetrically along the same axis of symmetry, and a discharge system is arranged on the axis of symmetry, and the discharge port faces the axis of symmetry.

Preferably, the discharge system includes a vibrating screen, a sand conveyor belt and an ashes conveyor belt, wherein the vibrating screen is arranged below the discharge port for receiving the solid waste reaction products discharged from the discharge port and separating them from the product. The sand with a particle size is separated from the ash powder by vibrating sieving. The sand outlet and the ash powder outlet are set on the vibrating sieve. The sand conveyor belt is set under the sand outlet to transport the separated sand to the feeding system for recycling. The powder conveyor belt is arranged below the ash powder outlet, and is used to transport the separated ash powder out for collection and storage.

Preferably, a vibrating screen is arranged on the symmetrical axis of every two symmetrically arranged skid-mounted smoldering reactors, and the discharge system also includes a telescopic dustproof cover, through which the two symmetrically arranged The top of the skid-mounted smoldering reactor is connected.

Preferably, the furnace body is a hollow rectangular structure, the furnace body includes an outer shell and an insulation layer arranged on the inner side wall of the outer shell, a sealed curtain that can be opened and closed along the track is arranged on the top of the furnace body, and the flue gas system It includes a smoke exhaust pipe and a flue gas treatment device connected with the smoke exhaust pipe. The smoke exhaust pipe is arranged at the lower part of the sealed curtain and is connected with the flue gas treatment device outside the furnace body through a side wall near the discharge system.

Preferably, the feeding system includes an average pretreatment device and a conveying device, the conveying device is a belt or dragon-type conveying device, one end of the conveying device is connected to the average pretreatment device, and the other end is arranged above the top of the furnace body, The conveying device is used to uniformly scatter solid waste reaction materials into the furnace body.

Preferably, the feed system, discharge system, hydraulic system, heating and air supply system and flue gas system all include driving devices, and these driving devices are all skid-mounted structures, and the skid-mounted solid waste smoldering The disposal system also includes a controller, the driving devices and the at least two skid-mounted smoldering reactors are connected to the controller through electrical signals, and the controller is used to receive remote control signals to control the skid-mounted solid waste Start and stop of smoldering disposal and capture and send monitoring data.

Preferably, the air supply duct includes a central air supply main duct and an air distributor arranged perpendicular to the air supply main duct.

According to another aspect of the present invention, a skid-mounted solid waste smoldering disposal method is provided, the method comprising: the at least two skid-mounted smoldering reactors operate alternately.

Generally speaking, compared with the prior art, the above technical solutions conceived by the present invention can at least achieve the following beneficial effects.

(1) The side wall of each skid-mounted smoldering reactor in the present invention is provided with a discharge port that can be opened or closed, and through the extension of the hydraulic rod, the skid-mounted smoldering reactor is provided with a discharge port. One side of the mouth is inclined to discharge the reaction product. In this process, the skid-mounted smoldering reactor will not be displaced in the horizontal direction, which reduces the complexity of mechanical settings and reduces maintenance costs, while helping to maintain the stable operation of the smoldering reaction and propagation process. By setting up the hydraulic system and using the hydraulic rod to lift the reactor to tilt for material discharge, the residues produced after the smoldering reaction have good fluidity and can be quickly cleaned and transported. Since the ignition process time of the smoldering reaction is usually long, at least two skid-mounted smoldering reactors are set in the present invention, which can realize the alternate operation of multiple reactors, realize the indirect optimization of the ignition process time, and improve the disposal efficiency; And the alternating operation can realize the large-scale disposal of smoldering, and the continuous disposal effect is good. In addition, the structure of the skid-mounted smoldering reactor is conducive to the flexible transportation and arrangement of the equipment, and further improves the flexibility and life cycle of the equipment.

(2) The discharge system of the present invention improves the efficiency and quality of the reaction product recycling by setting a dust-sand vibration separation system (ie a vibrating screen).

(3) The feed system, discharge system, hydraulic system, heating and air supply system and flue gas system described in the present invention all include driving devices, and these driving devices are all skid-mounted structures, and the skid-mounted structures can be, for example, Follow the container size. The skid-mounted solid waste smoldering disposal system provided by the present invention can greatly simplify the large-scale construction, modular assembly, and standardized mass production of smoldering devices, and effectively promote the application and promotion of smoldering technology.

【Description of drawings】

Figure 1 is a cross-sectional view of a skid-mounted solid waste smoldering disposal system provided by an embodiment of the present invention;

Fig. 2 is a top view of a skid-mounted solid waste smoldering disposal system provided by an embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of the hollow partition in the skid-mounted solid waste smoldering disposal system provided by the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of the air supply pipeline in the skid-mounted solid waste smoldering disposal system provided by the embodiment of the present invention;

Fig. 5 is a block diagram of a skid-mounted solid waste smoldering disposal system provided by an embodiment of the present invention.

Throughout the drawings, the same reference numerals are used to designate the same elements or structures, wherein:

1-skid-mounted smoldering reactor; 2-hydraulic rod; 3-vibrating screen; 4-sand conveyor belt; 5-ash powder conveyor belt; 6-telescopic dust cover; Air device; 9-heating pipeline; 10-fixed components; 11-controller; 12-driving device for heating and air supply system; 13-driving device for hydraulic system; 14-driving device for flue gas system;

101-discharge port; 102-furnace body; 103-starting device; 104-support base; 105-hollow partition; 106-sealed curtain; 107-exhaust pipe;

【detailed description】

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

Referring to Figures 1-5, an embodiment of the present invention provides a skid-mounted solid waste smoldering disposal system, including a feed system, a discharge system, a hydraulic system, a heating and air supply system, a flue gas system and at least two skid-mounted type smoldering reactor 1; wherein, the side wall of each skid-mounted smoldering reactor 1 is provided with a discharge port 101 that can be opened or closed, and the hydraulic rod 2 and the skid-mounted smoldering reactor 1 in the hydraulic system Through the extension of the hydraulic rod 2, the skid-mounted smoldering reactor 1 is inclined to the side provided with the discharge port 101, and the solid waste reaction product is discharged through the discharge port 101 and enters the discharge system , the heat and air supply system provides the skid-mounted smoldering reactor 1 with heat and gas required for smoldering, and the at least two skid-mounted smoldering reactors 1 can operate alternately.

It should be noted that the discharge port 101 can be set as a door that can be opened and closed automatically, and the bottom of the skid-mounted smoldering reactor 1 is the side where the door of the discharge port 101 can be opened or closed, away from the skid-mounted smoldering reactor 1. The bottom of the smoldering reactor 1 is connected to the sidewall of the skid-mounted smoldering reactor 1 through a rotating shaft for the door of the discharge port 101, so that the opening direction of the door of the discharge port 101 is opened from bottom to top.

Wherein, referring to Fig. 2, the feeding system, the discharging system, the hydraulic system, the heating and air supply system and the flue gas system all include driving devices, and these driving devices are skid-mounted structures, and the skid-mounted solid The waste smoldering disposal system also includes a controller, the driving devices and the at least two skid-mounted smoldering reactors 1 are connected to the controller through electrical signals, and the controller is used to receive remote control signals to control the skid Start and stop of installed solid waste smoldering disposal and obtain and send monitoring data. Exemplarily, in this embodiment, the driving device 12 of the heating and air supply system, the driving device 13 of the hydraulic system, the driving device 14 of the flue gas system, the at least two skid-mounted smoldering reactors 1 and the controller 11 The structural size of the shell can be set as a matching, skid-mounted, and modularly assembled box body. The size of the box body can be consistent with the size of the container, for example. The container is obtained after refitting, so that it is convenient for on-site hoisting, assembly and road and rail transshipment.

Specifically, the skid-mounted smoldering reactor 1 includes a furnace body 102 arranged from top to bottom, a starting device 103 and a supporting base 104 , and the supporting base 104 can be fixed on the foundation through the fixing assembly 10 . Wherein, the connection between the furnace body 102 and the starting device 103 is set through, and the end of the bottom plate of the starting device 103 close to the discharge port 101 is connected with the support base 104 through a rotating shaft. One end of the hydraulic rod 2 is arranged inside the support base 104, and the other end Connected to the bottom plate of the starting device 103, through the elongation of the hydraulic rod 2, the furnace body 102 and the starting device 103 are inclined to the side where the discharge port 101 is provided by rotating the shaft; the heat supply and air supply system includes a heat supply Pipes and air supply pipes, the heat supply pipes and air supply pipes are arranged inside the starting device 103 , and the heat supply pipes and air supply pipes are separated from the solid waste reaction materials in the furnace body 102 by the hollow partition 105 .

The furnace body 102 is a hollow rectangular structure. The furnace body 102 includes a stainless steel shell and an insulating layer arranged on the inner side wall of the shell. The insulating layer may be refractory bricks, for example. The top of the furnace body 102 is provided with a sealed curtain 106 that can be opened and closed along the track. The flue gas system includes a smoke exhaust pipe 107 and a flue gas treatment device connected to the smoke exhaust pipe. The smoke exhaust pipe 107 is arranged at the lower part of the sealed curtain 106 , and is connected to the flue gas treatment device outside the furnace body 102 through the side wall near the discharge system. The airtight curtain is made of three-proof material. The driving device of the flue gas system can be, for example, an exhaust fan, which provides a negative pressure environment to guide the exhaust of the flue gas through the exhaust fan and other devices, and guides the flue gas generated during the reaction process out of the reaction device, and enters the leaching tank, adsorption pool, ultraviolet light oxidation, etc. Single or combined flue gas treatment processes such as equipment, catalytic oxidation device, etc., discharge the tail gas that meets the standard into the atmosphere.

The interior of the starting device 103 is filled with a porous medium material to provide a uniform air distribution and heat storage and heat transfer environment and provide physical isolation protection for the heating device. The hollow partition 105 includes a grid and a wire mesh covering the grid. In order to fix the porous medium material to avoid the displacement of the porous medium material caused by the movement of the reaction device, the mesh diameter of the wire mesh is smaller than the particle diameter of the porous medium material.

In a feasible way of this embodiment, there are four skid-mounted smoldering reactors 1, two of which are arranged symmetrically along the same axis of symmetry, and a discharge system is arranged on the axis of symmetry, and the The discharge opening 101 faces the axis of symmetry.

The discharge system includes a vibrating screen 3, a sand conveyor belt 4 and an ashes conveyor belt 5, wherein the vibrating screen 3 is arranged below the discharge port 101 for receiving the solid waste reaction product discharged from the discharge port 101 and The sand of different particle sizes in the product is separated from the ash powder by vibrating sieving. The vibrating screen 3 is provided with a sand outlet 301 and an ash powder outlet 302. The sand conveyor belt 4 is arranged below the sand outlet 301 for transporting the separated sand out. Until the feeding system is recycled, the ashes conveyor belt 5 is arranged below the ashes outlet 302 for transporting the separated ashes out for collection and storage.

A vibrating screen 3 is arranged on the symmetrical axis of every two symmetrically arranged skid-mounted smoldering reactors 1, and the discharge system also includes a telescopic dustproof cover 6, through which the two symmetrically arranged The top of the skid-mounted smoldering reactor 1 is connected.

The feeding system includes an average pretreatment device and a conveying device, the conveying device is a belt or dragon type conveying device, one end of the conveying device is connected with the average pretreatment device, and the other end is arranged above the top of the furnace body 102, the The conveying device is used to evenly scatter the solid waste reaction material into the furnace body 102 .

The air supply duct includes a central air supply main duct 7 and an air distributor 8 arranged perpendicular to the air supply main duct. The heat supply pipeline 9 may be an electric heating pipe or a heat conduction oil pipe. The heat supply pipeline 9 can be arranged above the air supply pipeline.

Another embodiment of the present invention provides a skid-mounted solid waste smoldering disposal method, the method comprising: the at least two skid-mounted smoldering reactors operate alternately.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims

A skid-mounted solid waste smoldering disposal system is characterized in that it includes a feed system, a discharge system, a hydraulic system, a heating and air supply system, a flue gas system and at least two skid-mounted smoldering reactors (1 );

Wherein, the side wall of each skid-mounted smoldering reactor (1) is provided with a discharge opening (101) that can be opened or closed, and the hydraulic rod (2) and the skid-mounted smoldering reactor (1) in the hydraulic system ), through the elongation of the hydraulic rod (2), the skid-mounted smoldering reactor (1) is inclined to the side provided with the discharge port (101), and the solid waste reaction product passes through the discharge port (101) enters the discharge system after being discharged, and the heat and air supply system provides the heat and gas required for smoldering for the skid-mounted smoldering reactor (1), and the at least two skid-mounted smoldering reaction The device (1) can alternately operate.
The skid-mounted solid waste smoldering disposal system according to claim 1, characterized in that the skid-mounted smoldering reactor (1) comprises a furnace body (102) arranged from top to bottom, a starting device (103 ) and support base (104),

Wherein, the connection between the furnace body (102) and the starting device (103) is connected through, and one end of the bottom plate of the starting device (103) close to the discharge port (101) is connected with the supporting base (104) through a rotating shaft, and the hydraulic rod ( 2) One end is arranged inside the supporting base (104), and the other end is connected to the bottom plate of the starting device (103). Through the elongation of the hydraulic rod (2), the furnace body (102) and the starting device (103) pass through the rotating shaft Incline to the side provided with the discharge port (101);

The heat supply and air supply system includes a heat supply pipeline and an air supply pipeline, the heat supply pipeline and the air supply pipeline are arranged inside the starting device (103), and the heat supply pipeline and the air supply pipeline are connected to Solid waste reaction materials are separated in the furnace body (102).
The skid-mounted solid waste smoldering disposal system according to claim 2, characterized in that the interior of the starting device (103) is filled with a porous medium material, and the hollowed-out partition (105) includes a grid and covers the grid. A wire mesh, the mesh diameter of which is smaller than the particle diameter of the porous medium material.
The skid-mounted solid waste smoldering disposal system according to claim 1, characterized in that there are four skid-mounted smoldering reactors (1), two of which are arranged symmetrically along the same axis of symmetry. A discharge system is arranged on the axis of symmetry, and the discharge port (101) faces the axis of symmetry.
The skid-mounted solid waste smoldering disposal system according to claim 4, characterized in that, the discharge system includes a vibrating screen (3), a sand conveyor belt (4) and an ashes conveyor belt (5), wherein, The vibrating screen (3) is arranged below the discharge port (101), and is used to receive the solid waste reaction product discharged from the discharge port (101) and separate the sand of different particle sizes from the ash powder in the product by vibrating sieving. A sand outlet (301) and an ashes outlet (302) are arranged on the vibrating screen (3), and a sand conveyor belt (4) is arranged under the sand outlet (301) for transporting the separated sand to the feeding system for recycling. The ashes conveyor belt (5) is arranged below the ashes outlet (302), and is used for transporting the separated ashes out for collection and storage.
The skid-mounted solid waste smoldering disposal system according to claim 5, characterized in that one vibrating screen (3) is arranged on the symmetrical axis of every two symmetrically arranged skid-mounted smoldering reactors (1) , the discharge system also includes a telescopic dust cover (6), through which the tops of two symmetrically arranged skid-mounted smoldering reactors (1) are connected.
The skid-mounted solid waste smoldering disposal system according to claim 2, characterized in that, the furnace body (102) is a rectangular structure with a hollow inside, and the furnace body (102) includes an outer shell and an inner wall of the outer shell The upper insulation layer, the top of the furnace body (102) is provided with a sealed curtain (106) that can be opened and closed along the track, and the flue gas system includes a smoke exhaust pipe (107) and a flue gas treatment pipe device, the smoke exhaust pipe (107) is arranged at the lower part of the airtight curtain (106), and is connected with the flue gas treatment device outside the furnace body (102) through a wall near the side of the discharge system.
The skid-mounted solid waste smoldering disposal system according to claim 1, characterized in that, the feeding system includes an averaging pretreatment device and a conveying device, the conveying device is a belt or dragon-type conveying device, and the conveying device One end is connected to the averaging pretreatment device, and the other end is arranged above the top of the furnace body (102), and the conveying device is used to uniformly scatter solid waste reaction materials into the furnace body (102).
The skid-mounted solid waste smoldering disposal system according to claim 1, wherein the feeding system, the discharging system, the hydraulic system, the heating and air supply system and the flue gas system all include driving devices, and these The driving devices are all skid-mounted structures, and the skid-mounted solid waste smoldering disposal system also includes a controller, and the driving devices and the at least two skid-mounted smoldering reactors (1) and the controller are electrically The signal connection is used for receiving remote control signals to control the start and stop of the skid-mounted solid waste smoldering disposal and to acquire and send monitoring data through the controller.
A disposal method of the skid-mounted solid waste smoldering disposal system according to any one of claims 1-9, characterized in that the method comprises: the at least two skid-mounted smoldering reactors are operated alternately.