Environment-friendly waste incineration power generation method

Abstract

The application discloses an environment-friendly garbage incineration power generation method and belongs to the technical field of garbage treatment. The method can realize the following effects: a new type of pressure filtration device is introduced, the garbage is subjected to pressure filtration by using the weight of the pressure filtration ball, the drainage column can extend into the garbage to open a flow channel for the leaching liquid to flow down along the flow channel for recycling, the auxiliary magnetic ball scattered in the garbage is used, the auxiliary magnetic ball is actively close to the pressure filtration ball in the garbage after being subjected to the magnetic attraction of the pressure filtration ball, thereby a plurality of flow channels are opened, the leaching is accelerated, the leaching liquid is conveniently collected near the drainage column for recycling, meanwhile, the drainage column is also expanded under the magnetic attraction, the garbage is turned over when the pressure filtration ball rises, the leaching effect on the garbage can be improved, the pressure filtration effect and the subsequent incineration power generation efficiency can be obviously improved, and the pressure filtration garbage can keep a certain degree of looseness to facilitate incineration.

Description

Technical Field

[0001] This invention relates to the field of waste treatment technology, and more specifically, to an environmentally friendly waste incineration power generation method. Background Technology

[0002] Solid waste generated by people in their daily lives or in activities that provide services for daily life, as well as solid waste that is considered household waste according to laws and administrative regulations. This mainly includes residential waste, market and commercial waste, public place waste, street cleaning waste, and waste from enterprises and institutions.

[0003] Municipal solid waste management specifically refers to the treatment of solid waste generated from daily life or activities that provide services for daily life, as well as solid waste that is considered municipal solid waste according to laws and regulations. This includes source reduction, cleaning, sorting and collection, storage, transportation, treatment, disposal and related management activities of municipal solid waste.

[0004] Currently, there are technologies for incinerating municipal solid waste to generate electricity, which can not only protect the environment but also make use of waste. However, before incinerating municipal solid waste, it is often necessary to filter the waste to separate the waste from the filtrate. Existing technologies usually use stacking or filter presses. Stacking has poor leaching effect, while filter presses, although more effective, result in waste with high density after filtration that is not easy to incinerate, leading to low efficiency in incineration power generation. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the present invention aims to provide an environmentally friendly waste incineration power generation method. This method utilizes a novel filter press device, employing the weight of the filter balls to filter the waste. Simultaneously, a flow column extends into the waste, creating channels for the leachate to flow down and be recycled. Furthermore, auxiliary magnetic balls scattered throughout the waste, attracted by the magnetic force of the filter balls, actively approach them, creating multiple flow channels. This accelerates leaching and facilitates the collection of leachate near the flow column for recycling. Simultaneously, the flow column expands under magnetic attraction, agitating the waste as the filter balls rise. This not only improves the leaching effect but also maintains a certain degree of looseness in the filtered waste for easier incineration, significantly enhancing both the filtration efficiency and the subsequent incineration power generation efficiency.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] An environmentally friendly waste-to-energy incineration method includes the following steps:

[0010] S1. Garbage trucks unload household waste into garbage pits for storage. The garbage is then filtered through a filter press, and the leachate that seeps through is recycled.

[0011] S2. The filtered waste is sent into the incinerator for incineration, and the flue gas temperature is maintained above 850℃. The steam generated is used for power generation.

[0012] S3. The flue gas is purified sequentially by in-furnace denitrification, rotary spray tower and quicklime injection.

[0013] S4. The purified flue gas is then discharged into the atmosphere after being treated by activated carbon adsorption and dust removal by a bag filter.

[0014] Furthermore, the filter press device includes a mounting frame, with a winding roller rotatably mounted between the mounting frames. Multiple traction ropes are wound around the winding rollers, and a filter press ball is fixedly connected to the lower end of each traction rope. A flow guide column is fixedly connected to the lower end of each filter press ball, and multiple auxiliary magnetic balls are magnetically attracted to the outer end of each filter press ball. The filter press ball uses its own weight to filter the waste, while the flow guide column extends into the waste to create flow channels for the leachate to flow down and be recovered. Simultaneously, the auxiliary magnetic balls scattered in the waste, after being magnetically attracted by the filter press ball, actively approach the filter press ball in the waste, thereby creating multiple flow channels. This accelerates leaching and facilitates the collection of leachate near the flow guide column for recovery.

[0015] Furthermore, the filter ball includes an inner filter element, a middle elastic layer, and multiple outer protective flakes. The middle elastic layer covers the outer surface of the inner filter element, and the outer protective flakes densely cover the outer surface of the middle elastic layer. The outer protective flakes serve to isolate and protect the middle elastic layer. When the auxiliary magnetic ball is attracted to the surface of the outer protective flakes by magnetic attraction, once the magnetic attraction disappears, the auxiliary magnetic ball will be fully dispersed into the loosened waste under the elastic force of the middle elastic layer, thereby indirectly improving the filter pressing effect.

[0016] Furthermore, the internal pressure filter element is equipped with an electromagnet assembly, a power supply assembly, and a wireless control assembly.

[0017] Furthermore, the drainage column includes a main column, multiple wing rods, and multiple end magnetic blocks. The multiple wing rods are rotatably mounted on the outer end of the main column, and the end magnetic blocks are fixedly connected to the end of the wing rod away from the main column. Under normal conditions, the wing rods will hang down under the action of gravity, so that the drainage column as a whole maintains a columnar structure to facilitate its extension into the waste and form a flow channel. Under the magnetic attraction of the filter press ball, the end magnetic blocks will pull the wing rods to trigger the deployment action. When the filter press ball rises, the deployed wing rods can turn over the waste, which on the one hand accelerates the downward flow of leachate, and on the other hand improves the filtration effect of the waste in the next press, making it less likely to have dead zones in the filtration.

[0018] Furthermore, the length of the main column is less than the height of the garbage pile in the garbage pit, and the length of the wing rod is greater than the radius of the filter press ball.

[0019] Furthermore, the auxiliary magnetic ball includes an outer shell, an inner magnetic core, and a water-soluble bag. The inner magnetic core is embedded inside the outer shell, and the water-soluble bag is uniformly embedded on the outer surface of the outer shell. Under the magnetic attraction of the filter ball, the inner magnetic core can actively approach, and the water-soluble bag can come into contact with and absorb some of the moisture in the waste.

[0020] Furthermore, the water-soluble package is a mixture of water-soluble materials and solid fuel, wherein the solid fuel is granular coal or biomass fuel. When the water-soluble package comes into contact with water, the water-soluble materials dissolve in the water, while the solid fuel remains in the waste. This can increase the calorific value of the waste during incineration, and also facilitate the incineration of the waste, thereby improving the efficiency of incineration power generation.

[0021] Furthermore, the filtration steps of the filter press device are as follows:

[0022] a. Mix the garbage and auxiliary magnetic balls and unload them into the garbage pit. Then, drive the winding roller to rotate by the motor, so that the filter balls fall into the garbage pit to squeeze the garbage.

[0023] b. After standing for 1-3 minutes, start the electromagnet assembly inside the filter press ball. On the one hand, it forces the drainage column to unfold, and on the other hand, it adsorbs the auxiliary magnetic balls in the garbage. The flow channel is formed by the migration of the auxiliary magnetic balls, allowing the leachate to be collected along the flow channel and flow down to the drainage column for recycling.

[0024] c. Start the motor and reverse it to pull up the filter press ball. The expanded guide column will turn over the compressed waste. Then turn off the electromagnet assembly. The adsorbed auxiliary magnetic ball will fall back into the turned waste. The guide column will also return to its shape. Repeat the above steps until the filtration is complete.

[0025] Furthermore, step S4 involves testing the flue gas before emission; if the test fails, steps S3 and S4 are repeated until the gas passes the test.

[0026] 3. Beneficial effects

[0027] Compared with the prior art, the advantages of this invention are:

[0028] (1) This scheme can achieve the filtration of waste by introducing a new type of filter press device and using the weight of the filter press ball itself. At the same time, the diversion column can be extended into the waste to open up the flow channel for the leachate to flow down the flow channel for recycling. Meanwhile, the auxiliary magnetic balls scattered in the waste will actively approach the filter press ball after being attracted by the magnetic force of the filter press ball, thereby opening up multiple flow channels. This accelerates the filtration and facilitates the collection of leachate near the diversion column for recycling. At the same time, the diversion column will also unfold under the magnetic force and turn the waste over when the filter press ball rises. This not only improves the filtration effect of the waste, but also keeps the filtered waste at a certain looseness to facilitate incineration. This can significantly improve the filtration effect and the subsequent incineration power generation efficiency.

[0029] (2) The filter press device of this scheme includes a mounting frame, with a winding roller rotatably mounted between the mounting frames. Multiple traction ropes are wound on the winding rollers. A filter press ball is fixedly connected to the lower end of the traction ropes. A flow guide column is fixedly connected to the lower end of the filter press ball. Multiple auxiliary magnetic balls are magnetically attracted to the outer end of the filter press ball. The filter press ball itself is used to filter the garbage. At the same time, the flow guide column can extend into the garbage to open up a flow channel for the leachate to flow down the flow channel for recycling. Meanwhile, the auxiliary magnetic balls scattered in the garbage are attracted to the filter press ball by the magnetic attraction of the filter press ball, thereby opening up multiple flow channels, accelerating the leaching, and facilitating the collection of the leachate near the flow guide column for recycling.

[0030] (3) The filter ball of this solution includes an inner pressure filter element, a middle elastic layer and multiple outer protective flakes. The middle elastic layer covers the outer surface of the inner pressure filter element, and the outer protective flakes densely cover the outer surface of the middle elastic layer. The outer protective flakes play a role in isolating and protecting the middle elastic layer. When the auxiliary magnetic ball is attracted to the surface of the outer protective flakes by magnetic attraction, once the magnetic attraction disappears, the auxiliary magnetic ball will be fully scattered into the loosened garbage under the elastic force of the middle elastic layer, thereby indirectly improving the filter pressing effect.

[0031] (4) The drainage column of this solution includes a main column, multiple wing rods and multiple end magnetic blocks. The multiple wing rods are rotatably installed on the outer end of the main column, and the end magnetic blocks are fixedly connected to the end of the wing rod away from the main column. Under normal conditions, the wing rods will hang down under the action of gravity, so that the drainage column as a whole maintains a columnar structure to facilitate the extension into the garbage to form a flow channel. Under the magnetic attraction of the filter ball, the end magnetic blocks will pull the wing rods to trigger the unfolding action. When the filter ball rises, the unfolded wing rods can turn over the garbage, which can accelerate the downward flow of leachate on the one hand, and improve the filter effect of the garbage in the next time, and it is not easy to have dead corners in the filter.

[0032] (5) The auxiliary magnetic ball of this solution includes an outer shell, an inner magnetic core and a water-soluble bag. The inner magnetic core is embedded and connected inside the outer shell, and the water-soluble bag is evenly embedded on the outer surface of the outer shell. The inner magnetic core can actively approach under the magnetic attraction of the filter ball, and the water-soluble bag can contact the water in the waste and absorb it to a certain extent.

[0033] (6) The water-soluble package in this scheme is a mixture of water-soluble materials and solid fuel. The solid fuel is granular coal or biomass fuel. When the water-soluble package comes into contact with water, the water-soluble materials dissolve in the water, while the solid fuel remains in the waste. This can increase the calorific value of the waste during incineration and also facilitate the incineration of the waste, thereby improving the efficiency of incineration power generation. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the process of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the filter press device of the present invention before filtration.

[0036] Figure 3 This is a schematic diagram of the filter ball part of the present invention in a magnetic state;

[0037] Figure 4 This is a schematic diagram of the structure of the filter ball of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the auxiliary magnetic ball of the present invention;

[0039] Figure 6 This is a schematic diagram of the filter ball part of the present invention in a non-magnetic state;

[0040] Figure 7 This is a schematic diagram of the filter press device of the present invention during filter pressing.

[0041] Explanation of the labels in the diagram:

[0042] 1 Mounting frame, 2 Winding roller, 3 Traction rope, 4 Filter ball, 41 Inner filter element, 42 Intermediate elastic layer, 43 Outer protective scale, 5 Drainage column, 51 Main column, 52 Wing rod, 53 End magnetic block, 6 Auxiliary magnetic ball, 61 Outer shell, 62 Inner magnetic core, 63 Water-soluble bag. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Example 1:

[0047] Please see Figure 1-2 An environmentally friendly waste incineration power generation method includes the following steps:

[0048] S1. Garbage trucks unload household waste into garbage pits for storage. The garbage is then filtered through a filter press, and the leachate that seeps through is recycled.

[0049] S2. The filtered waste is sent into the incinerator for incineration, and the flue gas temperature is maintained above 850℃. The steam generated is used for power generation.

[0050] S3. The flue gas is purified sequentially by in-furnace denitrification, rotary spray tower and quicklime injection.

[0051] S4. The purified flue gas is then discharged into the atmosphere after being treated by activated carbon adsorption and dust removal by a bag filter.

[0052] Step S4 involves testing the flue gas before emission. If the test fails, steps S3 and S4 are repeated until the gas passes the test. Steps S3 and S4 are existing flue gas treatment methods and will not be described in detail here.

[0053] Please see Figure 2-3The filter press device includes a mounting frame 1, with a winding roller 2 rotatably mounted between the mounting frames 1. Multiple traction ropes 3 are wound on the winding roller 2, and a filter press ball 4 is fixedly connected to the lower end of the traction rope 3. A flow guide column 5 is fixedly connected to the lower end of the filter press ball 4, and multiple auxiliary magnetic balls 6 are magnetically attracted to the outer end of the filter press ball 4. The filter press ball 4 uses its own weight to filter the waste. At the same time, the flow guide column 5 can extend into the waste to open up a flow channel for the leachate to flow down the flow channel for recovery. Meanwhile, the auxiliary magnetic balls 6 scattered in the waste actively approach the filter press ball 4 in the waste after being magnetically attracted by the filter press ball 4, thereby opening up multiple flow channels, accelerating leaching, and facilitating the collection of leachate near the flow guide column 5 for recovery.

[0054] Please see Figure 4 The filter press ball 4 includes an inner filter element 41, a middle elastic layer 42, and multiple outer protective flakes 43. The middle elastic layer 42 covers the outer surface of the inner filter element 41, and the outer protective flakes 43 densely cover the outer surface of the middle elastic layer 42. The inner filter element 41 is made of high-density material and has a large weight to filter the garbage. The outer protective flakes 43 play a role in isolating and protecting the middle elastic layer 42. When the auxiliary magnetic ball 6 is attracted to the surface of the outer protective flakes 43 by magnetic attraction, once the magnetic attraction disappears, the auxiliary magnetic ball 6 will be fully scattered into the loosened garbage under the elastic force of the middle elastic layer 42, thereby indirectly improving the filter pressing effect.

[0055] The internal pressure filter element 41 contains an electromagnet assembly, a power supply assembly, and a wireless control assembly.

[0056] Please see Figure 3 The diversion column 5 includes a main column 51, multiple wing rods 52, and multiple end magnetic blocks 53. The multiple wing rods 52 are rotatably installed on the outer end of the main column 51, and the end magnetic blocks 53 are fixedly connected to the end of the wing rods 52 away from the main column 51. Under normal conditions, the wing rods 52 will hang down under the action of gravity, so that the diversion column 5 maintains a columnar structure and can extend into the garbage to form a flow channel. Under the magnetic attraction of the filter ball 4, the end magnetic blocks 53 will pull the wing rods 52 to trigger the unfolding action. When the filter ball 4 rises, the unfolded wing rods 52 can turn over the garbage, which can accelerate the downward flow of leachate and improve the filtration effect of the garbage in the next press, and prevent dead corners from appearing.

[0057] The length of the main column 51 is less than the height of the garbage pile in the garbage pit, and the length of the wing rod 52 is greater than the radius of the filter press ball 4.

[0058] Please see Figure 5The auxiliary magnetic ball 6 includes an outer shell 61, an inner magnetic core 62, and a water-soluble bag 63. The inner magnetic core 62 is embedded inside the outer shell 61, and the water-soluble bag 63 is evenly embedded on the outer surface of the outer shell 61. Under the magnetic attraction of the filter ball 4, the inner magnetic core 62 can actively approach, and the water-soluble bag 63 can come into contact with the water in the waste and absorb it to a certain extent.

[0059] The water-soluble pack 63 is a mixture of water-soluble materials and solid fuel. The solid fuel is granular coal or biomass fuel. When the water-soluble pack 63 comes into contact with water, the water-soluble materials dissolve in the water and can be materials such as starch and water-soluble glue, while the solid fuel will remain in the waste. During waste incineration, it can increase the calorific value of the waste and facilitate the incineration of waste, thereby improving the efficiency of incineration power generation.

[0060] Please see Figure 6-7 The filtration steps of the filter press are as follows:

[0061] a. Mix the garbage and auxiliary magnetic balls 6 and unload them into the garbage pit. Then, drive the winding roller 2 to rotate by the motor, so that the filter balls 4 fall into the garbage pit to squeeze the garbage.

[0062] b. After standing for 1-3 minutes, start the electromagnet assembly inside the filter press ball 4. On the one hand, it forces the guide column 5 to unfold, and on the other hand, it adsorbs the auxiliary magnetic ball 6 in the garbage. The auxiliary magnetic ball 6 migrates to form a flow channel, allowing the leaching liquid to be concentrated along the flow channel and flow down to the guide column 5 for recycling.

[0063] c. Start the motor and reverse it to pull up the filter press ball 4. The expanded guide column 5 turns over the compressed waste. Then turn off the electromagnet assembly. The adsorbed auxiliary magnetic ball 6 falls back into the turned waste. The guide column 5 also returns to its shape. Repeat the above steps until the filter press is completed.

[0064] This invention enables the introduction of a novel filter press device. The filter press ball 4 utilizes its own weight to filter waste, while the guide column 5 extends into the waste to create flow channels for the leachate to flow down and be recycled. Simultaneously, auxiliary magnetic balls 6 scattered throughout the waste, attracted by the magnetic force of the filter press ball 4, actively approach it, creating multiple flow channels. This accelerates leaching and facilitates the collection of leachate near the guide column 5 for recycling. The guide column 5 also expands under magnetic attraction, agitating the waste as the filter press ball 4 rises. This not only improves the leaching effect but also maintains a certain degree of looseness in the filtered waste for easier incineration, significantly enhancing both the filtration efficiency and the subsequent incineration power generation efficiency.

[0065] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly waste incineration power generation method, characterized in that: Includes the following steps: S1. Garbage trucks unload household waste into garbage pits for storage. The garbage is then filtered through a filter press, and the leachate that seeps through is recycled. S2. The filtered waste is sent into the incinerator for incineration, and the flue gas temperature is maintained above 850℃. The steam generated is used for power generation. S3. The flue gas is purified sequentially through in-furnace denitrification, rotary spray tower and quicklime injection. S4. The purified flue gas is then discharged into the atmosphere after being treated by activated carbon adsorption and dust removal by a bag filter. The filter press device includes a mounting frame (1), a winding roller (2) is rotatably mounted between the mounting frames (1), multiple traction ropes (3) are wound on the winding roller (2), a filter press ball (4) is fixedly connected to the lower end of the traction rope (3), a flow guide column (5) is fixedly connected to the lower end of the filter press ball (4), and multiple auxiliary magnetic balls (6) are magnetically adsorbed on the outer end of the filter press ball (4). The filter ball (4) includes an inner pressure filter element (41), a medium elastic layer (42) and multiple outer protective scales (43). The medium elastic layer (42) covers the outer surface of the inner pressure filter element (41), and the outer protective scales (43) densely cover the outer surface of the medium elastic layer (42). The internal pressure filter element (41) is equipped with an electromagnet assembly, a power supply assembly, and a wireless control assembly. The drainage column (5) includes a main column (51), multiple wing rods (52) and multiple end magnets (53). The multiple wing rods (52) are rotatably installed on the outer end of the main column (51), and the end magnets (53) are fixedly connected to the end of the wing rod (52) away from the main column (51). The auxiliary magnetic ball (6) includes an outer shell (61), an inner magnetic core (62), and multiple water-soluble bags (63). The inner magnetic core (62) is embedded inside the outer shell (61), and the water-soluble bags (63) are uniformly embedded on the outer surface of the outer shell (61).

2. The environmentally friendly waste incineration power generation method according to claim 1, characterized in that: The length of the main column (51) is less than the height of the garbage pile in the garbage pit, and the length of the wing rod (52) is greater than the radius of the filter ball (4).

3. The environmentally friendly waste incineration power generation method according to claim 1, characterized in that: The water-soluble package (63) is a mixture of water-soluble materials and solid fuel, wherein the solid fuel is granular coal or biomass fuel.

4. The environmentally friendly waste incineration power generation method according to any one of claims 1-3, characterized in that: The filtration steps of the filter press device are as follows: a. Mix the garbage and auxiliary magnetic balls (6) and unload them into the garbage pit. Then, drive the winding roller (2) to rotate by the motor, so that the filter balls (4) fall into the garbage pit to squeeze the garbage. b. After standing for 1-3 minutes, start the electromagnet assembly inside the filter press ball (4). On the one hand, it forces the diversion column (5) to unfold, and on the other hand, it adsorbs the auxiliary magnetic ball (6) in the garbage. The migration of the auxiliary magnetic ball (6) forms a flow channel, allowing the leaching liquid to be concentrated along the flow channel and flow down to the diversion column (5) for recycling. c. Start the motor and reverse it to pull up the filter ball (4). The expanded guide column (5) turns over the compressed garbage. Then turn off the electromagnet assembly. The adsorbed auxiliary magnetic ball (6) falls back into the turned garbage. The guide column (5) also returns to its shape. Repeat the above steps until the filter pressing is completed.

5. The environmentally friendly waste incineration power generation method according to claim 1, characterized in that: Step S4 involves testing the flue gas before it is emitted. If the test fails, steps S3 and S4 are repeated until the test is passed.

Images