Waste incineration tail gas purification system

Abstract

The waste incineration tail gas purification system comprises an incinerator used for incinerating waste and a desulfurization mechanism, and the desulfurization mechanism is arranged on one side of the incinerator; a sliding door is arranged on the side wall of the incinerator, a filtering mechanism and a dust removal mechanism are fixedly arranged on the top of the incinerator, the top of the incinerator communicates with a first guide pipe used for discharging incineration tail gas, and the end, away from the incinerator, of the first guide pipe communicates with the bottom of the side wall of the filtering mechanism; the top of the side wall of the filtering mechanism communicates with a second guide pipe, and the end, away from the filtering mechanism, of the second guide pipe communicates with the side wall of the dust removal mechanism. And the side wall of the dust removal mechanism communicates with a third guide pipe, the end, away from the dust removal mechanism, of the third guide pipe extends to the bottom end of the interior of the desulfurization mechanism, and the third guide pipe is fixedly connected with the top of the desulfurization mechanism. The purification effect of sulfides in the waste incineration tail gas is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tail gas purification, and in particular to a tail gas purification system for waste incineration. Background Art

[0002] Waste incineration is the most common method for treating solid waste. A large amount of tail gas is generated during the incineration process. The sulfide contained in the tail gas seriously exceeds the standard, which will cause harm to the environment and human health. For example, it will cause the formation of acid rain, pollute vegetation, soil and water bodies, and also cause damage to the human respiratory system and eyes. Therefore, desulfurization treatment is needed to reduce the harm to the environment and human health. The existing waste incineration tail gas purification device is not thorough in purifying sulfides, making it difficult for the sulfide content in the exhaust gas to meet the emission standards. Utility Model Content

[0003] In order to improve the purification effect of sulfides in the tail gas of waste incineration and reduce the harm to the environment and human health, the present application provides a waste incineration tail gas purification system.

[0004] The above invention objectives of the present application are achieved through the following technical solutions:

[0005] A waste incineration tail gas purification system comprises an incinerator for incinerating waste and a desulfurization mechanism, wherein the desulfurization mechanism is arranged on one side of the incinerator;

[0006] The side wall of the incinerator is provided with a sliding door, the top of the incinerator is fixedly provided with a filtering mechanism and a dust removal mechanism, the top of the incinerator is connected with a first conduit for discharging incineration exhaust gas, and one end of the first conduit away from the incinerator is connected with the bottom of the side wall of the filtering mechanism;

[0007] The top of the side wall of the filtering mechanism is connected with a second conduit, and one end of the second conduit away from the filtering mechanism is connected with the side wall of the dust removal mechanism;

[0008] The side wall of the dust removal mechanism is connected with a third conduit, one end of the third conduit away from the dust removal mechanism extends to the inner bottom end of the desulfurization mechanism, and the third conduit is fixedly connected to the top of the desulfurization mechanism.

[0009] By adopting the above technical scheme, garbage is put into the incinerator for incineration, and the generated exhaust gas is discharged from the incinerator through the first conduit and enters the filtering mechanism for preliminary filtration. After filtration, it enters the dust removal mechanism from the second conduit. The dust removal mechanism performs dust removal on the filtered exhaust gas to reduce solid particles in the exhaust gas. After the dust removal is completed, the exhaust gas enters the desulfurization mechanism from the third conduit, thereby effectively reducing the sulfide content in the exhaust gas. The exhaust gas after desulfurization is discharged from the desulfurization mechanism, reducing the harm of sulfides in the exhaust gas to the environment and human health.

[0010] Optionally, the desulfurization mechanism includes a reaction tank having an exhaust port on the top thereof, wherein a mixed solution of sodium hydroxide and sodium carbonate is stored inside the reaction tank, the third conduit is fixedly connected to the top of the reaction tank, and an end of the third conduit away from the dust removal mechanism extends into the reaction tank and extends below the liquid surface of the mixed solution.

[0011] By adopting the above technical solution, the third conduit extends below the liquid surface of the mixed solution. After preliminary filtration and dust removal, the exhaust gas is injected into the mixed solution of sodium hydroxide and sodium carbonate through the third conduit, and undergoes a series of chemical reactions with the mixed solution of sodium hydroxide and sodium carbonate. The mixed solution of sodium hydroxide and sodium carbonate can absorb the sulfide in the exhaust gas, and the desulfurized exhaust gas floats to the top of the reaction tank and is finally discharged through the exhaust port to achieve the purpose of reducing air pollution.

[0012] Optionally, the filtering mechanism comprises a filtering cavity, an activated carbon filtering layer is horizontally fixed inside the filtering cavity, and a quartz sand layer is arranged on the top of the activated carbon filtering layer;

[0013] The first conduit is communicated with the bottom of the side wall of the filter cavity, and the second conduit is communicated with the top of the side wall of the filter cavity.

[0014] By adopting the above technical scheme, an activated carbon filter layer is horizontally fixed inside the filter cavity, and a quartz sand layer is arranged on the top of the activated carbon filter layer. The exhaust gas generated by garbage incineration enters the bottom of the filter cavity through the first conduit. After the exhaust gas is filtered by the activated carbon filter layer and the quartz sand layer in turn, it is discharged from the filter cavity from the second conduit on the top of the filter cavity and enters the dust removal mechanism. The activated carbon filter layer can effectively remove odor and organic pollutants in the exhaust gas, and the quartz sand layer can preliminarily filter out solid particles in the exhaust gas, thereby improving the cleanliness and purification effect of the exhaust gas.

[0015] Optionally, the dust removal mechanism includes a dust removal chamber, the second duct is connected to one side wall of the dust removal chamber, and the third duct is connected to the other side wall of the dust removal chamber;

[0016] A nozzle is fixedly arranged on the top of the inner wall of the dust removal chamber, the top end of the nozzle passes through the dust removal chamber and is connected to an external water source, and a plurality of nozzles for atomizing liquid are distributed in a circular array on the side wall and bottom of the nozzle.

[0017] By adopting the above technical scheme, after the exhaust gas is initially filtered by the filtering mechanism, it enters the dust removal chamber through the second duct. A nozzle is arranged on the top of the dust removal chamber. The nozzle is connected to an external water source. Water enters the nozzle and is atomized through the nozzle and then sprayed out. The mist-like floating droplets have a large surface area and moving speed. During the movement, the dust in the gas entering the dust removal chamber is adsorbed to achieve dust removal treatment of the exhaust gas, avoid solid particles from entering the desulfurization mechanism, pollute the desulfurization mechanism, and improve the desulfurization efficiency.

[0018] Optionally, the dust removal chamber is made of a transparent material, and a drain valve is provided at the bottom of the side wall of the dust removal chamber.

[0019] By adopting the above technical solution, after the nozzle has been working for a period of time, a solid-liquid mixture produced by dust removal will accumulate inside the dust removal chamber. When the operator observes that the liquid level inside the dust removal chamber reaches a certain height, the drain valve can be opened to empty the dust removal chamber, thereby facilitating the recycling of the dust removal chamber and the nozzle.

[0020] Optionally, an air extraction pump is fixedly provided at the connection between the first conduit and the incinerator.

[0021] By adopting the above technical solution, the exhaust pump can suck the exhaust gas from the top of the incinerator to the first duct and provide power for the subsequent circulation of the gas.

[0022] Optionally, a cart is also included, and the incinerator and the desulfurization mechanism are fixed in parallel on the surface of the cart.

[0023] By adopting the above technical solution, the cart makes the entire exhaust gas purification device easy to move to adapt to various complex site environments, including narrow spaces and uneven ground, thereby improving the practicability of the device.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The tail gas generated by garbage incineration enters the bottom of the filter chamber through the first conduit. After being filtered by the activated carbon filter layer and the quartz sand layer in turn, the tail gas is discharged from the filter chamber through the second conduit at the top of the filter chamber and enters the dust removal mechanism. The activated carbon filter layer can effectively remove the odor and organic pollutants in the tail gas, and the quartz sand layer can preliminarily filter out the solid particles in the tail gas, thereby improving the cleanliness and purification effect of the tail gas;

[0026] 2. After the exhaust gas is initially filtered by the filter mechanism, it enters the dust removal chamber through the second conduit. A nozzle is provided on the top of the dust removal chamber. The nozzle is connected to an external water source. Water enters the nozzle and is atomized and sprayed out through the nozzle. The mist floating droplets have a large surface area and moving speed. During the movement, the dust in the gas entering the dust removal chamber is adsorbed to achieve dust removal of the exhaust gas, avoid solid particles from entering the desulfurization mechanism, pollute the desulfurization mechanism, and improve the efficiency of desulfurization;

[0027] 3. After the nozzle has been working for a period of time, the solid-liquid mixture produced by dust removal will accumulate inside the dust removal chamber. When the operator observes that the liquid level inside the dust removal chamber reaches a certain height, the drain valve can be opened to empty the dust removal chamber, so as to facilitate the recycling of the dust removal chamber and the nozzle;

[0028] 4. The third conduit extends below the liquid surface of the mixed solution. After preliminary filtration and dust removal, the exhaust gas is injected into the mixed solution of sodium hydroxide and sodium carbonate through the third conduit, and undergoes a series of chemical reactions with the mixed solution of sodium hydroxide and sodium carbonate. The mixed solution of sodium hydroxide and sodium carbonate can absorb the sulfide in the exhaust gas. The desulfurized exhaust gas floats to the top of the reaction tank and is finally discharged through the exhaust port to achieve the purpose of reducing air pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0030] Figure 2 is a cross-sectional view of a filter mechanism in an embodiment of the present application;

[0031] Figure 3 is a cross-sectional view of a dust removal mechanism in an embodiment of the present application;

[0032] Figure 4 It is a cross-sectional view of the desulfurization mechanism in the embodiment of the present application.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. incinerator; 2. desulfurization mechanism; 21. reaction tank; 22. exhaust port; 23. mixed solution; 3. sliding door; 4. filtering mechanism; 41. filtering chamber; 42. activated carbon filtering layer; 43. quartz sand layer; 5. dust removal mechanism; 51. dust removal chamber; 52. nozzle; 53. nozzle; 54. drain valve; 6. first conduit; 7. second conduit; 8. third conduit; 9. vacuum pump; 10. cart. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] The present application discloses a waste incineration tail gas purification system. Figure 1 The exhaust gas purification system includes a cart 10, an incinerator 1 and a desulfurization mechanism 2, the incinerator 1 and the desulfurization mechanism 2 are fixed in parallel on the surface of the cart 10; a sliding door 3 is provided on the side wall of the incinerator 1, a filtering mechanism 4 and a dust removal mechanism 5 are fixedly provided on the top of the incinerator 1, a first conduit 6 is connected to the top of the incinerator 1, a vacuum pump 9 is fixedly provided at the connection between the first conduit 6 and the incinerator 1, and an end of the first conduit 6 away from the incinerator 1 is connected to the bottom of the side wall of the filtering mechanism 4; a second conduit 7 is connected to the top of the side wall of the filtering mechanism 4, and an end of the second conduit 7 away from the filtering mechanism 4 is connected to the side wall of the dust removal mechanism 5; a third conduit 8 is connected to the side wall of the dust removal mechanism 5, and an end of the third conduit 8 away from the dust removal mechanism 5 extends to the inner bottom end of the desulfurization mechanism 2, and the third conduit 8 is fixedly connected to the top of the desulfurization mechanism 2. The garbage is put into the incinerator 1 for incineration, and the exhaust pump 9 sucks the generated exhaust gas to the first conduit 6. The exhaust gas is discharged from the incinerator 1 through the first conduit 6 and enters the filtering mechanism 4 for preliminary filtration. After filtration, the exhaust gas enters the dust removal mechanism 5 from the second conduit 7. The dust removal mechanism 5 performs dust removal on the filtered exhaust gas to reduce solid particles in the exhaust gas. After the dust removal is completed, the exhaust gas enters the desulfurization mechanism 2 from the third conduit 8, thereby effectively reducing the sulfide content in the exhaust gas. The desulfurized exhaust gas is discharged from the desulfurization mechanism 2.

[0036] Reference Figure 1 and Figure 2 The filter mechanism 4 includes a filter chamber 41, an activated carbon filter layer 42 is horizontally fixed inside the filter chamber 41, and a quartz sand layer 43 is arranged on the top of the activated carbon filter layer 42; the first conduit 6 is connected to the bottom of the side wall of the filter chamber 41, and the second conduit 7 is connected to the top of the side wall of the filter chamber 41. The tail gas generated by the incineration of garbage enters the bottom of the filter chamber 41 through the first conduit 6, and the tail gas is filtered by the activated carbon filter layer 42 and the quartz sand layer 43 in turn, and then discharged from the filter chamber 41 through the second conduit 7 at the top of the filter chamber 41 and enters the dust removal mechanism 5. The activated carbon filter layer 42 can effectively remove the odor and organic pollutants in the tail gas, and the quartz sand layer 43 can preliminarily filter out the solid particles in the tail gas, thereby improving the cleanliness and purification effect of the tail gas.

[0037] Reference Figure 1 and Figure 3The dust removal mechanism 5 includes a dust removal chamber 51, a second conduit 7 is connected to one side wall of the dust removal chamber 51, and a third conduit 8 is connected to the other side wall of the dust removal chamber 51; a nozzle 52 is fixedly arranged on the top of the inner wall of the dust removal chamber 51, and the top of the nozzle 52 passes through the dust removal chamber 51 and is connected to an external water source. A plurality of nozzles 53 for atomizing liquid are distributed in a circular array on the side wall and bottom of the nozzle 52; the dust removal chamber 51 is made of transparent material, and a drain valve 54 is provided at the bottom of the side wall of the dust removal chamber 51. After the exhaust gas is initially filtered by the filtering mechanism 4, it enters the dust removal chamber 51 through the second conduit 7. The nozzle 52 is connected to an external water source. Water enters the nozzle 52 and is atomized and then sprayed out through the nozzle 53. The mist-like floating droplets have a large surface area and moving speed. During the movement, the dust in the gas entering the dust removal chamber 51 is adsorbed to achieve dust removal treatment of the exhaust gas and prevent solid particles from entering the desulfurization mechanism 2 and polluting the desulfurization mechanism 2. After the nozzle 52 has been working for a period of time, the solid-liquid mixture generated by the dust removal will accumulate inside the dust removal chamber 51. When the operator observes that the liquid level inside the dust removal chamber 51 reaches a certain height, the drain valve 54 can be opened to empty the dust removal chamber 51.

[0038] Reference Figure 1 and Figure 4 The desulfurization mechanism 2 includes a reaction tank 21, a gas outlet 22 is provided at the top of the reaction tank 21, a mixed solution 23 of sodium hydroxide and sodium carbonate is stored in the reaction tank 21, and a third conduit 8 is fixedly connected to the top of the reaction tank 21, and one end of the third conduit 8 away from the dust removal mechanism 5 extends into the reaction tank 21 and extends below the liquid surface of the mixed solution 23. After preliminary filtration and dust removal, the tail gas is injected into the mixed solution 23 of sodium hydroxide and sodium carbonate through the third conduit 8, and undergoes a series of chemical reactions with the mixed solution 23 of sodium hydroxide and sodium carbonate. The mixed solution 23 of sodium hydroxide and sodium carbonate can absorb sulfides in the tail gas, and the desulfurized tail gas floats to the top of the reaction tank 21, and is finally discharged through the gas outlet 22, so as to achieve the purpose of reducing air pollution.

[0039] The implementation principle of the waste incineration exhaust gas purification system of the embodiment of the present application is as follows: the waste is put into the incinerator 1 for incineration, and the exhaust gas generated is sucked into the first conduit 6 by the exhaust pump 9. The exhaust gas enters the bottom of the filter chamber 41 through the first conduit 6, and is filtered through the activated carbon filter layer 42 and the quartz sand layer 43 in sequence. The activated carbon filter layer 42 can effectively remove the odor and organic pollutants in the exhaust gas, and the quartz sand layer 43 can preliminarily filter out the solid particles in the exhaust gas.

[0040] The filtered tail gas is discharged from the filter chamber 41 through the second conduit 7 at the top of the filter chamber 41 and enters the dust removal chamber 51. The nozzle 52 is connected to an external water source. Water enters the nozzle 52 and is sprayed out after being atomized through the nozzle 53. The mist-like floating droplets have a large surface area and moving speed. During the movement, the dust in the gas entering the dust removal chamber 51 is adsorbed to achieve dust removal of the tail gas. After the nozzle 52 has been working for a period of time, the inside of the dust removal chamber 51 will accumulate a solid-liquid mixture generated by dust removal. When the operator observes that the liquid level inside the dust removal chamber 51 reaches a certain height, the drain valve 54 can be opened to empty the dust removal chamber 51.

[0041] After preliminary filtration and dust removal, the exhaust gas is injected into the mixed solution 23 of sodium hydroxide and sodium carbonate through the third conduit 8, and undergoes a series of chemical reactions with the mixed solution 23 of sodium hydroxide and sodium carbonate. The mixed solution 23 of sodium hydroxide and sodium carbonate can absorb the sulfide in the exhaust gas. The desulfurized exhaust gas floats to the top of the reaction tank 21 and is finally discharged through the exhaust port 22 to achieve the purpose of reducing air pollution.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A waste incineration tail gas purification system, characterized in that: It comprises an incinerator (1) for incinerating garbage and a desulfurization mechanism (2), wherein the desulfurization mechanism (2) is arranged on one side of the incinerator (1); The side wall of the incinerator (1) is provided with a sliding door (3), the top of the incinerator (1) is fixedly provided with a filtering mechanism (4) and a dust removal mechanism (5), the top of the incinerator (1) is connected to a first conduit (6) for discharging incineration exhaust gas, and the end of the first conduit (6) away from the incinerator (1) is connected to the bottom of the side wall of the filtering mechanism (4); The top of the side wall of the filtering mechanism (4) is connected to a second conduit (7), and one end of the second conduit (7) away from the filtering mechanism (4) is connected to the side wall of the dust removal mechanism (5); The side wall of the dust removal mechanism (5) is connected to a third conduit (8), and one end of the third conduit (8) away from the dust removal mechanism (5) extends to the inner bottom end of the desulfurization mechanism (2), and the third conduit (8) is fixedly connected to the top of the desulfurization mechanism (2).

2. The waste incineration tail gas purification system according to claim 1, characterized in that: The desulfurization mechanism (2) comprises a reaction tank (21), the top of the reaction tank (21) is provided with an exhaust port (22), a mixed solution (23) of sodium hydroxide and sodium carbonate is stored inside the reaction tank (21), the third conduit (8) is fixedly connected to the top of the reaction tank (21), and one end of the third conduit (8) away from the dust removal mechanism (5) extends into the reaction tank (21) and extends to below the liquid surface of the mixed solution (23).

3. The waste incineration tail gas purification system according to claim 1, characterized in that: The filtering mechanism (4) comprises a filtering chamber (41), an activated carbon filtering layer (42) is horizontally fixed inside the filtering chamber (41), and a quartz sand layer (43) is arranged on the top of the activated carbon filtering layer (42); The first conduit (6) is in communication with the bottom of the side wall of the filter cavity (41), and the second conduit (7) is in communication with the top of the side wall of the filter cavity (41).

4. The waste incineration tail gas purification system according to claim 1, characterized in that: The dust removal mechanism (5) comprises a dust removal chamber (51), the second duct (7) is in communication with one side wall of the dust removal chamber (51), and the third duct (8) is in communication with the other side wall of the dust removal chamber (51); A nozzle (52) is fixedly arranged on the top of the inner wall of the dust removal chamber (51), the top end of the nozzle (52) passes through the dust removal chamber (51) and is connected to an external water source, and a plurality of nozzles (53) for atomizing liquid are distributed in a circular array on the side wall and bottom of the nozzle (52).

5. The waste incineration tail gas purification system according to claim 4, characterized in that: The dust removal chamber (51) is made of a transparent material, and a liquid discharge valve (54) is provided at the bottom of the side wall of the dust removal chamber (51).

6. The waste incineration tail gas purification system according to claim 1, characterized in that: An air extraction pump (9) is fixedly arranged at the connection between the first conduit (6) and the incinerator (1).

7. The waste incineration tail gas purification system according to claim 1, characterized in that: It also comprises a cart (10), wherein the incinerator (1) and the desulfurization mechanism (2) are fixed in parallel on the surface of the cart (10).

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