Waste gas treatment device for waste incineration power plant

Abstract

The utility model provides a waste gas treatment device for a waste incineration power plant, which is characterized in that a gas inlet pipe is arranged at the lower part of a tank body, an exhaust pipe is arranged on a top cover, a blow-off pipe is arranged in the middle of the bottom of the tank body, the blow-off pipe is communicated with a sewage treatment tank, and the sewage treatment tank can be used for treating sprayed absorption liquid and filtering absorbed dirt; the treated absorption liquid is conveyed into the spraying pipe again by the conveying pump; a spraying pipe is arranged at the lower part in the tank body, and uniformly distributed spraying heads are arranged below the spraying pipe; a filter plate, a heating pipe, a partition plate and a condensation pipe are sequentially arranged above the spraying pipe from bottom to top, an oxidation cabin is arranged between the filter plate and the partition plate, a condensation cabin is arranged between the partition plate and the top cover, and a communicated drainage pipe is arranged at the bottom of the condensation cabin. According to the device, harmful substances in waste gas are effectively removed through multi-step treatment of spraying, oxidation, condensation and the like; due to the special structural design of each part, the treatment efficiency and effect are improved; the sewage treatment tank is arranged, so that cyclic utilization of absorption liquid is realized, resources are saved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and more specifically, to a waste gas treatment device for a waste incineration power plant. Background Art

[0002] Waste incineration power generation, as an effective way of waste reduction and resource utilization, has been widely applied. However, the waste gas generated during the waste incineration process contains various harmful substances, such as dioxins, sulfides, nitrogen oxides, etc., which pose a serious threat to the environment and human health.

[0003] The existing waste gas treatment methods mostly adopt physical, chemical and biological methods to remove or reduce harmful substances in the waste gas. For example, the spray tower technology uses a liquid absorbent to wash the waste gas to remove particulate matter and soluble gases therein; the activated carbon adsorption technology uses the porous structure of activated carbon to adsorb organic substances and odor gases in the waste gas; while the electrostatic precipitation technology and the bag filter technology are mainly used to remove particulate matter in the waste gas.

[0004] However, most of the current treatment devices adopt a split structure, with a complex structure. Especially for small incinerators, the waste gas treatment device occupies a large area, has a complex structure and high cost, while a simple treatment device cannot effectively remove harmful gases and dust in the waste gas. Summary of the Utility Model

[0005] Based on the above technical problems, the utility model proposes a waste gas treatment device for a waste incineration power plant.

[0006] A waste gas treatment device for a waste incineration power plant includes: a tank body. An air inlet pipe is provided on the side wall of the lower part of the tank body, an exhaust pipe is provided on the top cover of its top, and a sewage discharge pipe is provided in the middle of the bottom of the tank body. The sewage discharge pipe is communicated with a sewage treatment tank, and the sewage treatment tank can treat the absorbed liquid after spraying, filter the absorbed dirt, and the treated absorbed liquid is re-transported to the spray pipe by a delivery pump; the spray pipe is arranged in the lower part of the tank body, the outside of the spray pipe is communicated with an infusion pipe, and uniformly distributed spray heads are arranged below the spray pipe; above the spray pipe, a perforated filter plate, a heating pipe, a partition plate and a condensing pipe are arranged in sequence from bottom to top. An oxidation chamber is formed between the filter plate and the partition plate, a condensation chamber is formed between the partition plate and the top cover, an air vent is arranged on the partition plate, and a communicated drain pipe is arranged at the bottom of the condensation chamber.

[0007] Preferably, the spray pipe is a vortex coil pipe, the infusion pipe is connected to the sewage treatment tank, and the infusion pipe transports the absorbed liquid into the spray pipe through a delivery pump.

[0008] Preferably, a plurality of heating pipes are arranged vertically in the oxidation chamber, and the heating pipes are in a vortex shape.

[0009] Preferably, the condenser pipe is a spiral pipe, and the condenser pipe includes an inner condenser pipe and an outer condenser pipe.

[0010] Preferably, the drain pipe is communicated with the sewage treatment tank.

[0011] Beneficial effects:

[0012] 1. Components such as filter plates, heating pipes, partition plates, and condenser pipes arranged in sequence from bottom to top in the tank body form an oxidation chamber and a condensation chamber, making the waste gas treatment process more orderly. Each treatment link is independent and cooperative with each other, enabling the device to have the ability of continuous treatment;

[0013] 2. The present device sets a vortex coil as the spray pipe, which can increase the contact area between the gas and the absorption liquid and improve the absorption efficiency. At the same time, the design of the multi-layer vortex-shaped heating pipes in the oxidation chamber can improve the oxidation and decomposition efficiency of harmful substances in the waste gas, thereby overall improving the waste gas treatment efficiency;

[0014] 3. By setting a sewage treatment tank to treat and filter the absorption liquid after spraying, and then re-transporting it to the spray pipe by a delivery pump, the recycling of the absorption liquid is realized, reducing the consumption of water resources. The condensed water can be recycled, further saving water resources. Description of the drawings

[0015] Figure 1 Shows the structural schematic diagram of the present invention;

[0016] Figure 2 Shows the structural schematic diagram inside the tank body. Detailed implementation manners

[0017] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0018] Such as Figures 1 to 2An exhaust gas treatment device for a waste incineration power plant is shown as follows, including: a tank body 1, an air inlet pipe 2 is provided on the side wall of the lower part of the tank body 1, an exhaust pipe 3 is provided on the top cover 10 of its top, a sewage discharge pipe 4 is provided in the middle of the tank bottom 11 at its bottom, the sewage discharge pipe 4 is communicated with a sewage treatment tank 5, and the sewage treatment tank 5 can treat the absorbed liquid after spraying, filter the absorbed dirt, and the treated absorbed liquid is re-transported into the spray pipe 12 by a delivery pump 7; the spray pipe 12 is arranged in the lower part of the tank body 1, the outside of the spray pipe 12 is communicated with an infusion pipe 6, and spray heads are evenly distributed below the spray pipe 12; above the spray pipe 12, a perforated filter plate 14, a heating pipe 9, a partition plate 15, and a condensing pipe 16 are arranged in sequence from bottom to top. The space between the filter plate 14 and the partition plate 15 is an oxidation chamber, the space between the partition plate 15 and the top cover 10 is a condensation chamber, a ventilation port 17 is provided on the partition plate 15, and a communicated drain pipe 8 is provided at the bottom of the condensation chamber. The drain pipe 8 is communicated with the sewage treatment tank 5, realizing the recycling of water resources.

[0019] The spray pipe 12 is a vortex coil pipe. The infusion pipe 6 is connected with the sewage treatment tank 5. The infusion pipe 6 transports the absorbed liquid into the spray pipe 12 through a delivery pump 7. The design of the vortex coil pipe increases the spray area and uniformity.

[0020] Multiple layers of heating pipes 9 are arranged up and down in the oxidation chamber. The shape of the heating pipe 9 is vortex-shaped. The vortex-shaped heating pipe 9 improves the heating efficiency and uniformity, which is beneficial to the oxidation treatment of exhaust gas.

[0021] The condensing pipe 16 is a spiral pipe. The condensing pipe 16 includes an inner condensing pipe 16 and an outer condensing pipe 16. The design of the spiral pipe and the double-layer structure enhances the condensing effect.

[0022] The working process of this device is as follows:

[0023] The exhaust gas enters the tank body 1 from the air inlet pipe 2, is first preliminarily treated by the absorbed liquid sprayed from the spray pipe 12 and the spray heads, then enters the oxidation chamber through the small holes on the filter plate 14 in sequence for oxidation treatment, then enters the condensation chamber through the ventilation port 17 on the partition plate 15 for condensation treatment, and finally is discharged from the exhaust pipe 3. The sewage generated during the treatment process enters the sewage treatment tank 5 through the sewage discharge pipe 4 for treatment and then is recycled.

[0024] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste gas treatment device for a waste incineration power plant, characterized in that: include: A tank body, an air inlet pipe is provided on the side wall of the lower part of the tank body, an exhaust pipe is provided on the top cover thereof, and a sewage pipe is provided in the middle part of the bottom of the tank, and the sewage pipe is connected with a sewage treatment tank, and the sewage treatment tank can treat the absorption liquid after spraying, filter the absorbed dirt, and the treated absorption liquid is re-transported to the spray pipe by a delivery pump; the spray pipe is arranged at the lower part of the tank body, the outside of the spray pipe is connected with the infusion pipe, and evenly distributed spray heads are provided below the spray pipe; above the spray pipe, a filter plate with holes, a heating pipe, a partition, and a condensation pipe are provided in sequence from bottom to top, an oxidation chamber is provided between the filter plate and the partition, a condensation chamber is provided between the partition and the top cover, vents are provided on the partition, and a connected drain pipe is provided at the bottom of the condensation chamber.

2. The waste gas treatment device for a waste incineration power plant according to claim 1, characterized in that: The spray pipe is a vortex coil, the liquid delivery pipe is connected to the sewage treatment tank, and the liquid delivery pipe delivers the absorption liquid into the spray pipe through a delivery pump.

3. The waste gas treatment device for a waste incineration power plant according to claim 1, characterized in that: Multiple layers of heating pipes distributed up and down are arranged in the oxidation chamber, and the shape of the heating pipes is a vortex.

4. The waste gas treatment device for a waste incineration power plant according to claim 1, characterized in that: The condenser is a spiral tube, and the condenser includes an inner condenser and an outer condenser.

5. The waste gas treatment device for a waste incineration power plant according to claim 1, characterized in that: The drainage pipe is communicated with the sewage treatment tank.

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