Distributed intelligent low-temperature thermal cracking domestic waste treatment device

Abstract

The present invention relates to the technical field of domestic waste treatment, and in particular to a distributed intelligent low-temperature thermal cracking domestic waste treatment device, which comprises a cracking furnace, wherein the cracking furnace has a domestic waste feeding port and an automatic ignition device, and also has a solid waste collection structure for collecting solid waste generated after combustion. The cracking furnace is also connected to a multi-stage treatment structure for treating post-combustion waste gas, and the multi-stage treatment structure is connected to a tail gas treatment device for discharging the treated waste gas; the multi-stage treatment structure comprises a decoking device, a desulfurization device for treating the decoking waste gas, a denitrification device for treating the desulfurized waste gas, a deodorization device for treating the denitrified waste gas, and a dioxin treatment device for treating dioxins in the waste gas connected to the deodorization device. The purpose of the present invention is to provide a distributed intelligent low-temperature thermal cracking domestic waste treatment device, which treats the waste gas through a multi-stage purification treatment device, has an obvious purification effect, and greatly reduces the pollution to the atmospheric environment.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic waste treatment, and in particular to a distributed intelligent low-temperature thermal decomposition domestic waste treatment device. Background Art

[0002] The landfill method is used to dispose of garbage. The landfilled garbage is not treated harmlessly. Not only are there a large number of bacteria, viruses and heavy metal pollution in the soil, but the leachate from the garbage will also pollute groundwater resources for a long time. This method is extremely harmful to the environment. The incineration method has a simple process, reliable operation, fast processing speed, large processing volume and capacity reduction, but garbage incineration will produce a large amount of dust, dioxins and organic matter, which are difficult to handle and cause serious pollution to the atmospheric environment.

[0003] Garbage pyrolysis technology refers to a process technology that heats garbage in an oxygen-free or oxygen-deficient atmosphere to produce pyrolysis gas, fuel oil and residual carbon. Compared with garbage incineration technology, garbage pyrolysis technology can control the emission of harmful gases such as dioxins, and at the same time help reduce the emission of PM2.5, and produce fewer secondary pollution emissions. However, the garbage pyrolysis device in the existing technology is only an improvement over the garbage incineration device. The various waste gas treatment processes generated after combustion are simple, and the purification effect is limited, and there is still a risk of polluting the atmospheric environment. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a distributed intelligent low-temperature thermal decomposition of domestic waste treatment device, which treats the exhaust gas through a multi-stage purification treatment device, has an obvious purification effect, and greatly reduces the pollution to the atmospheric environment.

[0005] To achieve the above objectives, the distributed intelligent low-temperature thermal decomposition system for treating domestic waste provided by the present invention adopts the following technical solutions:

[0006] A distributed intelligent low-temperature thermal cracking domestic waste treatment device, comprising a cracking furnace, the cracking furnace having a domestic waste feeding port and an automatic ignition device, and also having a solid waste collection structure for collecting solid waste generated after combustion, the cracking furnace is also connected to a multi-stage treatment structure for treating post-combustion waste gas, and the multi-stage treatment structure is connected to a tail gas treatment device for discharging the treated waste gas;

[0007] The multi-stage treatment structure includes a decoking device, a desulfurization device for treating waste gas after decoking, a denitrification device for treating waste gas after desulfurization, a deodorization device for treating waste gas after denitrification, and a dioxin treatment device connected to the deodorization device for treating dioxins in the waste gas. The dioxin treatment device is connected to the tail gas treatment device.

[0008] Furthermore, the decoking device includes a waste gas rapid cooling decoking tower connected to the top of the cracking furnace, and a waste gas treatment device connected to the waste gas rapid cooling decoking tower. The waste gas treatment device includes an activated carbon adsorption device, a waste gas collection pipeline, and a waste gas filtering device for treating the waste gas in sequence. The waste gas filtering device is connected to the desulfurization device.

[0009] Furthermore, the exhaust gas rapid cooling and decoking tower is connected to a tar reflux pipeline for returning tar to the cracking furnace to assist combustion.

[0010] Furthermore, the exhaust gas rapid cooling and decoking tower is also connected to a water circulation cooling system for cooling the tower body and the exhaust gas.

[0011] Furthermore, the desulfurization device comprises a desulfurization tank, wherein the desulfurization tank has a desulfurization structure and chemical liquid.

[0012] Furthermore, the denitration device comprises a denitration tank, wherein the denitration tank has a denitration structure and chemical liquid.

[0013] Furthermore, the deodorizing device comprises a liquid biological deodorizing tank, wherein the liquid biological deodorizing tank contains the liquid biological deodorizing device and the biological deodorizing liquid.

[0014] Furthermore, the dioxin treatment device includes a plasma generator connected to the deodorization device through a pipeline.

[0015] Furthermore, the exhaust gas treatment device comprises an exhaust gas treatment pipe, the exhaust gas treatment pipe is connected to a variable frequency fan for exhausting air, and a rain cover is arranged at the pipe opening of the exhaust gas treatment pipe.

[0016] Furthermore, the domestic waste feeding port is connected to an automatic feeding device, which includes a conveyor belt and an infrared scanning probe arranged at the domestic waste feeding port. The infrared scanning probe is communicatively connected to a control device for controlling the on and off of the conveyor belt. The control device is used to shut down the conveyor belt after the infrared scanning probe scans that the height of the domestic waste input reaches a set height.

[0017] The distributed intelligent low-temperature thermal cracking domestic waste treatment device provided by the present invention has the following beneficial effects: domestic waste is driven into the cracking furnace under the action of the automatic feeding device, the infrared scanning probe transmits the instruction of shutting down the conveyor belt to the control device after the domestic waste reaches the set height, the automatic ignition device ignites the domestic waste in the cracking furnace, the generated solid waste is collected by the solid waste collection structure, the waste gas first enters the waste gas rapid cooling and decoking tower, and the separated tar is returned to the cracking furnace through the tar reflux pipeline for combustion support. In this process, the water circulation cooling system can cool the tower body and the waste gas, reduce the temperature of the waste gas, eliminate the probability of dioxin generation, and prevent the tower body from malfunctioning due to high temperature.

[0018] The waste gas after tar separation passes through the activated carbon adsorption device, waste gas collection pipeline, waste gas filtration device in sequence, and then passes through the desulfurization tank and denitrification tank to achieve desulfurization and denitrification respectively, and then passes through the deodorization device and dioxin treatment device to achieve deodorization and dioxin removal. The waste gas is processed by the above multiple devices to form tail gas, which is discharged from the tail gas treatment pipe under the action of the variable frequency fan. The rain cover can prevent rainwater from falling into the tail gas treatment pipe;

[0019] In summary, the present invention uses a multi-stage treatment structure to treat the waste gas generated after the combustion of garbage in the cracking furnace, and the purification effect is obvious, which greatly reduces the pollution to the atmospheric environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the distributed intelligent low-temperature thermal decomposition domestic waste treatment device provided by the present invention.

[0021] Numbers in the figure: 1. Cracking furnace; 2. Exhaust gas rapid cooling and decoking tower; 3. Exhaust gas treatment device; 4. Water circulation cooling system; 5. Desulfurization device; 6. Denitrification device; 7. Liquid biological deodorization tank; 8. Plasma generator; 9. Variable frequency fan. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0023] like Figure 1 As shown, a distributed intelligent low-temperature thermal cracking domestic waste treatment device comprises a cracking furnace 1, wherein the cracking furnace 1 has a domestic waste feeding port and an automatic ignition device, and also has a solid waste collection structure for collecting solid waste generated after combustion, and the cracking furnace 1 is also connected to a multi-stage treatment structure for treating post-combustion waste gas, and the multi-stage treatment structure is connected to a tail gas treatment device for discharging the treated waste gas;

[0024] The multi-stage treatment structure includes a decoking device, a desulfurization device 5 for treating waste gas after decoking, a denitrification device 6 for treating waste gas after desulfurization, a deodorization device for treating waste gas after denitrification, and a dioxin treatment device connected to the deodorization device for treating dioxins in the waste gas. The dioxin treatment device is connected to the tail gas treatment device.

[0025] The decoking device includes a waste gas rapid cooling decoking tower 2 connected to the top of the cracking furnace 1, and a waste gas treatment device 3 connected to the waste gas rapid cooling decoking tower 2. The waste gas treatment device 3 includes an activated carbon adsorption device, a waste gas collection pipeline, and a waste gas filtering device for treating the waste gas in sequence. The waste gas filtering device is connected to the desulfurization device 5.

[0026] The exhaust gas rapid cooling and decoking tower 2 is connected to a tar reflux pipeline for reflux tar to the cracking furnace 1 to assist combustion.

[0027] The exhaust gas rapid cooling and decoking tower 2 is also connected to a water circulation cooling system 4 for cooling the tower body and the exhaust gas.

[0028] The desulfurization device 5 comprises a desulfurization tank, wherein the desulfurization tank has a desulfurization structure and chemical liquid.

[0029] The denitration device 6 comprises a denitration tank, wherein the denitration tank has a denitration structure and chemical liquid.

[0030] The deodorizing device comprises a liquid biological deodorizing tank 7, wherein the liquid biological deodorizing tank 7 contains a liquid biological deodorizing device and biological deodorizing liquid.

[0031] The dioxin treatment device includes a plasma generator 8 connected to the deodorization device through a pipeline.

[0032] The exhaust gas treatment device comprises an exhaust gas treatment pipe, which is connected to a variable frequency blower 8 for exhausting air, and a rain cover is arranged at the pipe opening of the exhaust gas treatment pipe.

[0033] The domestic waste feeding port is connected to an automatic feeding device, which includes a conveyor belt and an infrared scanning probe arranged at the domestic waste feeding port. The infrared scanning probe is communicatively connected to a control device for controlling the on and off of the conveyor belt. The control device is used to shut down the conveyor belt after the infrared scanning probe scans that the height of the domestic waste input reaches a set height.

[0034] In this embodiment, the solid waste collection structure includes a filter leak plate located at the lower side of the cracking furnace 1 and a collection bin at the lower side of the filter leak plate. A slide is provided in the collection bin, and a drawer is installed on the guide of the slide. The staff can collect solid waste by pulling out the drawer.

[0035] In this embodiment, the automatic ignition device includes an automatic electronic igniter located in the cracking furnace 1 and also includes an external liquefied petroleum gas cylinder.

[0036] In this embodiment, an online monitoring system is also arranged beside the exhaust gas treatment pipe. The online monitoring system includes a camera device, which is remotely connected to a display device for staff to view and can also be incorporated into the environmental protection supervision system.

[0037] The working principle of the distributed intelligent low-temperature thermal cracking domestic waste treatment device provided by the present invention is as follows: domestic waste is driven into the cracking furnace 1 under the action of the automatic feeding device, the infrared scanning probe transmits the instruction of shutting down the conveyor belt to the control device after the domestic waste reaches the set height, the automatic ignition device ignites the domestic waste in the cracking furnace 1, the generated solid waste is collected by the solid waste collection structure, the waste gas first enters the waste gas rapid cooling and decoking tower 2, and the separated tar is returned to the cracking furnace 1 through the tar reflux pipeline for combustion support. In this process, the water circulation cooling system 4 can cool the tower body and the waste gas, reduce the temperature of the waste gas, eliminate the probability of dioxin generation, and prevent the tower body from malfunctioning due to high temperature;

[0038] The waste gas after tar separation passes through the activated carbon adsorption device, the waste gas collection pipeline, the waste gas filtering device in sequence, and then passes through the desulfurization tank and the denitrification tank to achieve desulfurization and denitrification respectively, and then passes through the deodorization device and the dioxin treatment device to achieve deodorization and dioxin removal. The waste gas is processed by the above multiple devices to form tail gas, which is discharged from the tail gas treatment pipe under the action of the variable frequency fan 8. The rain cover can prevent rainwater from falling into the tail gas treatment pipe;

[0039] In summary, the present invention uses a multi-stage treatment structure to treat the waste gas generated after the garbage is burned in the cracking furnace 1, and the purification effect is obvious, which greatly reduces the pollution to the atmospheric environment.

[0040] Second embodiment:

[0041] The difference between this embodiment and the first embodiment is that the exhaust gas treatment device may also only include an exhaust gas treatment pipe and a variable frequency fan, and no rain cover is provided.

[0042] Third embodiment:

[0043] The difference between this embodiment and the first embodiment is that the tar obtained by the waste gas rapid cooling and decoking tower treatment does not need to be introduced into the cracking furnace, but is collected separately.

[0044] Fourth embodiment:

[0045] The difference between this embodiment and the first embodiment is that the decoking device can also remove the waste gas rapid cooling decoking tower and only has one or two of the activated carbon adsorption device, the waste gas collection pipeline, and the waste gas filtering device.

[0046] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Distributed intelligent low-temperature thermal cracking domestic waste treatment device, characterized by: The invention comprises a cracking furnace, wherein the cracking furnace has a domestic waste feeding port and an automatic ignition device, and also has a solid waste collection structure for collecting solid waste generated after combustion, and the cracking furnace is also connected to a multi-stage treatment structure for treating waste gas after combustion, and the multi-stage treatment structure is connected to a tail gas treatment device for discharging the treated waste gas; The multi-stage treatment structure includes a decoking device, a desulfurization device for treating waste gas after decoking, a denitration device for treating waste gas after desulfurization, a deodorization device for treating waste gas after denitration, and a dioxin treatment device for treating dioxins in waste gas connected to the deodorization device, and the dioxin treatment device is connected to the tail gas treatment device; The exhaust gas treatment device comprises an exhaust gas treatment pipe, the exhaust gas treatment pipe is connected to a variable frequency fan for exhausting air, and a rain cover is arranged at the pipe opening of the exhaust gas treatment pipe; The domestic waste feeding port is connected to an automatic feeding device, which includes a conveyor belt and an infrared scanning probe arranged at the domestic waste feeding port. The infrared scanning probe is communicatively connected to a control device for controlling the on and off of the conveyor belt. The control device is used to shut down the conveyor belt after the infrared scanning probe scans that the height of the domestic waste input reaches a set height.

2. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to claim 1 is characterized in that: The decoking device includes a waste gas rapid cooling decoking tower connected to the top of the cracking furnace, and a waste gas treatment device connected to the waste gas rapid cooling decoking tower. The waste gas treatment device includes an activated carbon adsorption device, a waste gas collection pipeline, and a waste gas filtering device for treating the waste gas in sequence. The waste gas filtering device is connected to the desulfurization device.

3. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to claim 2 is characterized in that: The exhaust gas rapid cooling and decoking tower is connected with a tar reflux pipeline for reflux tar to the cracking furnace to assist combustion.

4. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to claim 2 or 3, characterized in that: The waste gas rapid cooling and decoking tower is also connected to a water circulation cooling system for cooling the tower body and the waste gas.

5. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to any one of claims 1 to 3, characterized in that: The desulfurization device comprises a desulfurization tank, wherein the desulfurization tank has a desulfurization structure and chemical liquid.

6. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to any one of claims 1 to 3, characterized in that: The denitration device comprises a denitration tank, wherein the denitration tank has a denitration structure and chemical liquid.

7. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to any one of claims 1 to 3, characterized in that: The deodorizing device comprises a liquid biological deodorizing tank, wherein the liquid biological deodorizing tank contains a liquid biological deodorizing device and biological deodorizing liquid.

8. The distributed intelligent low-temperature thermal decomposition domestic waste treatment device according to any one of claims 1 to 3, characterized in that: The dioxin treatment device includes a plasma generator connected to the deodorization device through a pipeline.

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