High-efficiency and environmentally friendly slag discharge system for incinerators

Abstract

The present invention discloses an efficient and environmentally friendly slag discharging system for an incinerator, which includes a slag discharger for receiving and cooling the slag discharged from the slag discharge port of the incinerator; a belt conveyor for receiving the slag discharged from the discharge end of the slag discharger and transporting the slag to the other end for discharge; a bucket elevator for receiving the slag discharged from the belt conveyor and lifting the slag to the upper side of its upper end for discharge; an aggregate hopper device with a feed port provided at its upper end, and the feed port is arranged below the upper side of the upper end of the bucket elevator to collect the slag discharged from the bucket elevator. The lower side of the aggregate hopper device is provided with a discharge port for the slag to fall into the loading vehicle; a de-ironing device recovers the ferrous metals in the slag. An automatic control system for realizing the transfer of the slag can automatically unload the slag into the loading vehicle after the slag is loaded into the aggregate hopper device, avoiding the overflow of the slag cooling water and the scattering and dripping of the residue caused by manual bagging or secondary handling. While liberating the manpower, it ensures the tidiness and cleanliness of the site.

Description

Technical Field

[0001] The present invention belongs to the technical field of incineration treatment systems, and particularly relates to an efficient and environmentally friendly slag discharging system for an incinerator. Background Art

[0002] The residues generated during the incineration process are generally inorganic substances, mainly metal oxides, hydroxides, carbonates, sulfates, phosphates, and silicates. Due to limited land resources and the presence of utilizable substances in the residues, developed countries have long exploited and utilized incineration residues as resources. In China, incineration residues are all landfilled or solidified and landfilled. Considering the environment and economy, the residues can be screened and magnetically separated before landfill treatment to improve the resource utilization rate of incineration residues. However, the current slag discharging system in incineration process equipment is backward, which is not conducive to the sorting and utilization of incineration residues, resulting in resource waste. Manual bagging and secondary handling and loading cause residue accumulation and fly ash pollution at the production site, affecting air quality. At the same time, the overflow of residue cooling water will cause secondary pollution, the labor force cannot be liberated, and the operation efficiency is low. Therefore, an efficient and environmentally friendly collection system for furnace slag discharging has become the research focus of incineration treatment. Summary of the Invention

[0003] The technical problem solved by the present invention: The current slag discharging system in incineration process equipment is backward, which is not conducive to the sorting and utilization of incineration residues, resulting in resource waste. Manual bagging and secondary handling and loading cause residue accumulation and fly ash pollution at the production site, affecting air quality. At the same time, the overflow of residue cooling water will cause secondary pollution, the labor force cannot be liberated, and the operation efficiency is low.

[0004] Technical Solution: To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] An efficient and environmentally friendly slag discharging system for an incinerator, comprising:

[0006] A slag discharging machine, whose feeding end is connected to the slag discharging port of the incinerator to receive and cool the slag discharged from the slag discharging port, and the slag discharging machine transports the slag to its discharging end for discharging;

[0007] A belt conveyor, one end of which is arranged below the discharging end of the slag discharging machine to receive the slag discharged from the discharging end and transport the slag to its other end for discharging;

[0008] A bucket elevator, whose lower end is arranged below the other end of the belt conveyor to receive the slag discharged from the belt conveyor and lift the slag to the upper side of its upper end for discharging;

[0009] An aggregate hopper device, whose upper end is provided with a feeding port, and the feeding port is arranged below the upper side of the upper end of the bucket elevator to collect the slag discharged from the bucket elevator. The lower side of the aggregate hopper device is provided with a discharging port to drop the slag into a loading vehicle when the discharging port is opened;

[0010] The iron removal device is used to sort and recover ferrous metals in the slag during the slag transportation.

[0011] Furthermore, there are two of the iron removal devices, one is arranged above the front side of the discharge end of the slag discharger, and the other is arranged on the upper side of the rear section of the belt conveyor.

[0012] Furthermore, one side of the discharge end of the slag discharger is tilted upward so that the slag is discharged from the discharge end of the slag discharger in a scattered state.

[0013] Furthermore, a funnel is provided between the discharge end of the slag discharger and the belt conveyor.

[0014] Furthermore, a gate is arranged at the discharge port to control the opening and closing of the discharge port.

[0015] Furthermore, a guiding plate is provided between the upper end side of the bucket elevator and the aggregate hopper device. The upper end of the guiding plate is arranged under the upper end of the bucket elevator, and its lower end extends into the aggregate hopper device.

[0016] Furthermore, the guiding plate is in an arc shape or concave shape with both sides tilted upward. Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] 1. The high-efficiency, environmentally friendly slag discharge and collection system of the present invention can sort metal resources in the residue, bringing economic benefits.

[0018] 2. The high-efficiency, environmentally friendly slag discharge and collection system of the present invention can realize the automatic collection of slag, liberating the labor force.

[0019] 3. The high-efficiency, environmentally friendly slag discharge and collection system of the present invention can achieve environmental protection and high efficiency in the process, avoiding the scattering and dripping of slag and cooling water. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an efficient and environmentally friendly incinerator slag discharge system. Detailed Embodiments

[0021] The following further clarifies the present invention in conjunction with specific embodiments. The embodiments are implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0022] Such as Figure 1As shown in the figure, an efficient and environmentally friendly slag discharging system for an incinerator according to the present application is characterized by comprising a slag discharging machine 2, an iron removing device 3, a belt conveyor 5, a bucket elevator 6 and an aggregate hopper device 7. Among them, the slag discharging machine 2 serves as a quenching and transporting device for furnace slag. Its feeding end is connected to the slag discharging port 11 of the incinerator 1, so as to receive the furnace slag discharged from the slag discharging port 11 of the incinerator 1, and the slag discharging machine 2 transports the furnace slag to its discharging end for discharging. The slag discharging machine 2 is configured with circulating cooling water. During transportation, the slag discharging machine 2 cools the furnace slag through the circulating cooling water. The belt conveyor 5 serves as a horizontal transfer device for furnace slag. One end of it is arranged under the discharging end of the slag discharging machine 2, so as to receive the furnace slag discharged from the discharging end of the slag discharging machine 2 and transport the furnace slag to the other end for discharging. The bucket elevator 6 serves as a vertical transfer device for furnace slag. Its lower end is arranged under the other end of the belt conveyor 5, so as to receive the furnace slag discharged from the belt conveyor 5 and lift the furnace slag to the upper end for discharging on one side. The aggregate hopper device 7 serves as a collecting device for furnace slag. Its upper end is provided with a feeding port 71, and the feeding port 71 is arranged under the upper side of the upper end of the bucket elevator 6, so as to collect the furnace slag discharged from the bucket elevator 6. The lower side of the aggregate hopper device 7 is provided with a discharging port 72. When the discharging port 72 is opened, the furnace slag automatically falls onto the loading vehicle 9 under the action of gravity. The iron removing device 3 serves as a sorting and recycling device for ferrous metals in the furnace slag, and is used for sorting and recycling ferrous metals in the furnace slag during the transportation of the furnace slag. The iron removing device 3 is configured with an iron block collecting box to temporarily store the recycled ferrous metals in the iron block collecting box.

[0023] In order to recover ferrous metals in the furnace slag as much as possible, preferably two iron removing devices 3 are adopted in the embodiment of the present invention. One is arranged above the front side of the discharging end of the slag discharging machine 2 for the first recovery. The other iron removing device 3 is arranged on the upper side of the rear section of the belt conveyor 5 for the second recovery. In order to further improve the effect of ferrous metal recovery, one side of the discharging end of the slag discharging machine 2 is tilted upward, so that when the furnace slag passes under the iron removing device 3 located at the discharging end, it is discharged in a scattered state, improving the recovery efficiency. A funnel 4 can also be arranged between the discharging end of the slag discharging machine 2 and the belt conveyor 5, and the furnace slag is turned over through the funnel 4 to improve the recovery efficiency of the iron removing device 3 on the upper side of the rear section of the belt conveyor 5.

[0024] In order to facilitate the control of the loading amount of the loading vehicle 9, a gate is arranged at the discharging port 72, so that the opening and closing of the discharging port 72 can be controlled through the gate, and then the loading operation of the furnace slag can be controlled. In order to facilitate the furnace slag to fall from the upper end of the bucket elevator 6 into the aggregate hopper device 7, a guiding plate 8 is obliquely arranged between the upper end on one side of the bucket elevator 6 and the aggregate hopper device 7. The upper end of the guiding plate 8 is arranged under the discharging port at the upper end of the bucket elevator 6, and the lower end of the guiding plate 8 extends into the aggregate hopper device 7. The guiding plate 8 can be set into an arc shape or a concave shape with both sides tilted upward, so that the furnace slag can fall along the guiding plate 8 to avoid spilling.

[0025] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An efficient and environmentally friendly slag discharging system for an incinerator, characterized in that: Comprising: A slag discharger, whose feeding end is connected to the slag discharge port of the incinerator to receive and cool the slag discharged from the slag discharge port, and the slag discharger transports the slag to its discharging end for discharging; One side of the discharging end of the slag discharger is tilted upward so that the slag is discharged from the discharging end of the slag discharger in a scattered state; A belt conveyor, one end of which is arranged under the discharging end of the slag discharger to receive the slag discharged from the discharging end of the slag discharger and transport the slag to its other end for discharging; A funnel is provided between the discharging end of the slag discharger and the belt conveyor; A bucket elevator, whose lower end is arranged under the other end of the belt conveyor to receive the slag discharged from the belt conveyor and lift the slag to the upper side of its upper end for discharging; A guide plate is provided between the upper side of the upper end of the bucket elevator and the aggregate hopper device. The upper end of the guide plate is arranged under the upper end of the bucket elevator, and its lower end extends into the aggregate hopper device; The guide plate is in an arc shape or a concave shape with both sides tilted upward; An aggregate hopper device, whose upper end is provided with a feeding port. The feeding port is arranged under the upper side of the upper end of the bucket elevator to collect the slag discharged from the bucket elevator. The lower side of the aggregate hopper device is provided with a discharging port to let the slag fall into the loading vehicle when the discharging port is opened; A magnetic separation device for sorting and recovering ferrous metals in the slag during the transportation of the slag; There are two magnetic separation devices, one is arranged above the front side of the discharging end of the slag discharger, and the other is arranged above the rear section of the belt conveyor.

2. An efficient and environmentally friendly slag discharging system for an incinerator according to claim 1, characterized in that: A gate is arranged at the discharging port to control the opening and closing of the discharging port.

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