A system for deodorization based on activated carbon adsorption blending combustion of sludge in thermal power plant

Abstract

The application discloses a kind of based on thermal power plant sludge blending burning activated carbon adsorption deodorization system, including sludge receiving bin system, sludge storage bin system, activated carbon adsorption box inlet pipeline, activated carbon adsorption box, deodorization fan and flue gas duct system;Sludge storage bin system and sludge receiving bin system are all provided with hydrogen sulfide detector and ammonia detector, the outlet of sludge storage bin system and the outlet of sludge receiving bin system are all connected with the inlet of activated carbon adsorption box inlet pipeline, the outlet of activated carbon adsorption box inlet pipeline is connected with the inlet of activated carbon adsorption box, the outlet of activated carbon adsorption box is connected with the inlet of deodorization fan, the outlet of deodorization fan is connected with flue gas duct system, the outlet of sludge storage bin system and the outlet of sludge receiving bin system are all provided with electric switch valve, and the system can remove low concentration odor and harmful gas emitted from sludge.

Description

Technical Field

[0001] The invention belongs to the technical field of deodorization and relates to an adsorption deodorization system based on the mixing of sludge from thermal power plants with activated carbon for combustion. Background Art

[0002] Currently, the deodorized sludge system in thermal power plant sludge co-combustion processes uses a sludge co-combustion booster fan to transport the sludge to the boiler for combustion. When the co-combustion process is shut down, odor and harmful gases still remain in the sludge system. During this time, the sludge co-combustion system is not operational, and the booster fan is not running, failing to provide the negative pressure environment required to deodorize the sludge receiving and storage systems. The odor and harmful gases in the sludge co-combustion process are relatively low in concentration. These gases are further diluted by the booster fan, preventing them from being fully combusted in the boiler. Consequently, the odor and harmful gases are not fully treated and are released into the environment.

[0003] In view of the existing thermal power plant sludge co-combustion deodorization system and method, it is necessary to propose a targeted activated carbon adsorption deodorization system and method. By analyzing the odor and harmful gases in the sludge, the appropriate activated carbon adsorption process is selected to remove the odor and harmful gases emitted from the sludge. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an activated carbon adsorption deodorization system based on the combustion of thermal power plant sludge, which can remove low-concentration odors and harmful gases emitted from the sludge.

[0005] To achieve the above-mentioned purpose, the activated carbon adsorption deodorization system based on the co-combustion of thermal power plant sludge of the present invention comprises a sludge receiving bin system, a sludge storage bin system, an activated carbon adsorption box inlet pipeline, an activated carbon adsorption box, a deodorization fan and a smoke and air duct system;

[0006] The sludge storage bin system and the sludge receiving bin system are both equipped with hydrogen sulfide detectors and ammonia detectors. The outlet of the sludge storage bin system and the outlet of the sludge receiving bin system are both connected to the inlet of the activated carbon adsorption box inlet pipeline, the outlet of the activated carbon adsorption box inlet pipeline is connected to the inlet of the activated carbon adsorption box, the outlet of the activated carbon adsorption box is connected to the inlet of the deodorizing fan, the outlet of the deodorizing fan is connected to the smoke and air duct system, and the outlet of the sludge storage bin system and the outlet of the sludge receiving bin system are both equipped with electric switching valves.

[0007] The outlet of the sludge storage bin system and the outlet of the sludge receiving bin system are both connected to the inlet of the activated carbon adsorption box inlet pipeline through a branch pipeline system.

[0008] The outlet of the activated carbon adsorption box is connected to the inlet of the deodorizing fan through the activated carbon adsorption box outlet pipeline.

[0009] The outlet of the deodorizing fan is connected to the smoke and air duct system through the deodorizing fan outlet pipeline.

[0010] The number of sludge receiving bin systems can be one or more.

[0011] The number of sludge storage silo systems can be one or more.

[0012] It also includes a controller, wherein the controller is connected to the hydrogen sulfide detector, the ammonia detector, the electric switch valve and the deodorizing fan.

[0013] The deodorizing fan uses a variable frequency fan.

[0014] The present invention has the following beneficial effects:

[0015] During specific operation, the activated carbon adsorption deodorization system based on the co-firing of thermal power plant sludge described in the present invention detects the concentrations of hydrogen sulfide and ammonia in the sludge storage bin system and the sludge receiving bin system through a hydrogen sulfide detector and an ammonia detector. When the concentrations of hydrogen sulfide or ammonia in the sludge storage bin system or the sludge receiving bin system exceed the standard, the corresponding electric switch valve is opened for exhaust, and the deodorization fan is turned on at the same time. The activated carbon adsorption process is used to remove odor and harmful gases. At the same time, the solid waste of the activated carbon material that has lost its activity can be directly transported to the furnace for combustion treatment, thereby avoiding the re-generation of solid waste. The structure is simple, the operation is convenient, and the practicability is extremely strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Among them, 1 is the mud receiving bin system, 2 is the sludge storage bin system, 3 is the branch pipeline system, 4 is the electric switch valve, 5 is the activated carbon adsorption box inlet pipeline, 6 is the activated carbon adsorption box, 7 is the activated carbon adsorption box outlet pipeline, 8 is the deodorization fan, 9 is the deodorization fan outlet pipeline, 10 is the smoke and air duct system, 11 is the hydrogen sulfide detector, and 12 is the ammonia detector. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0019] The accompanying drawings illustrate schematic diagrams of the structures of the disclosed embodiments of the present invention. These figures are not drawn to scale; for the purpose of clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0020] refer to Figure 1 The activated carbon adsorption deodorization system based on the co-combustion of sludge in a thermal power plant of the present invention comprises a sludge receiving bin system 1, a sludge storage bin system 2, a branch pipe system 3, an electric switch valve 4, an activated carbon adsorption box inlet pipe 5, an activated carbon adsorption box 6, an activated carbon adsorption box outlet pipe 7, a deodorizing fan 8, a deodorizing fan outlet pipe 9, a smoke and air duct system 10, a hydrogen sulfide detector 11, and an ammonia detector 12;

[0021] Among them, the sludge storage bin system 2 and the sludge receiving bin system 1 are both provided with a hydrogen sulfide detector 11 and an ammonia detector 12, and the outlet of the sludge storage bin system 2 and the outlet of the sludge receiving bin system 1 are respectively connected to the inlet of the activated carbon adsorption box inlet pipe 5 through the branch pipe system 3, the outlet of the activated carbon adsorption box inlet pipe 5 is connected to the inlet of the activated carbon adsorption box 6, the outlet of the activated carbon adsorption box 6 is connected to the inlet of the deodorizing fan 8 through the activated carbon adsorption box outlet pipe 7, and the outlet of the deodorizing fan 8 is connected to the smoke duct system 10 through the deodorizing fan outlet pipe 9. Among them, the number of sludge receiving bin systems 1 can be one or more, the number of sludge storage bin systems 2 can be one or more, and the outlet of the sludge storage bin system 2 and the outlet of the sludge receiving bin system 1 are both provided with an electric switch valve 4.

[0022] It also includes a controller, wherein the controller is connected to the hydrogen sulfide detector 11, the ammonia detector 12, the electric switch valve 4 and the deodorizing fan 8, wherein the hydrogen sulfide detector 11 and the ammonia detector 12 are used to detect the concentrations of hydrogen sulfide and ammonia in the sludge storage bin system 2 and the sludge receiving bin system 1. When the concentrations of hydrogen sulfide or ammonia in the sludge storage bin system 2 or the sludge receiving bin system 1 exceed the standard, the corresponding electric switch valve 4 is opened for exhaust, and the deodorizing fan 8 is opened at the same time to reduce the concentrations of hydrogen sulfide and ammonia in the corresponding sludge storage bin system 2 or the sludge receiving bin system 1.

[0023] During actual operation, the deodorizing fan 8 is used to provide a negative pressure environment, and the odor and other harmful gases enter the activated carbon adsorption box 6 along the branch pipe system 3, the electric switch valve 4 and the activated carbon adsorption box inlet pipe 5 for adsorption, and are finally discharged through the smoke and air duct system 10.

[0024] In actual operation, different numbers of branch pipeline systems 3 and different numbers of hydrogen sulfide detectors 11 and ammonia detectors 12 are set in the sludge storage bin system 2 and the sludge receiving bin system 1 as needed.

[0025] In addition, according to the analysis that the main components of the sludge odor and harmful gases are hydrogen sulfide and ammonia, an activated carbon adsorption box 6 suitable for adsorbing the above odor and harmful gases is selected.

[0026] The deodorizing fan 8 adopts variable frequency control. In actual operation, the frequency can be adjusted according to the concentrations detected by the hydrogen sulfide detector 11 and the ammonia detector 12, and the adaptability is strong.

[0027] Different additives in activated carbon are selected according to the composition of odor and harmful gases in sludge. The activated carbon adsorption process facilitates the treatment of waste solids. The deactivated activated carbon adsorption material can be directly added to the boiler for combustion to avoid the re-generation of solid waste.

[0028] The above description of the embodiments is intended to facilitate understanding and application of the invention by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the invention.

Claims

1. A deodorization system based on activated carbon adsorption with sludge from thermal power plants, characterized in that: It includes a sludge receiving bin system (1), a sludge storage bin system (2), an activated carbon adsorption box inlet pipeline (5), an activated carbon adsorption box (6), a deodorizing fan (8) and a smoke and air duct system (10); The sludge storage bin system (2) and the sludge receiving bin system (1) are both provided with a hydrogen sulfide detector (11) and an ammonia detector (12); the outlet of the sludge storage bin system (2) and the outlet of the sludge receiving bin system (1) are both connected to the inlet of the activated carbon adsorption box inlet pipeline (5); the outlet of the activated carbon adsorption box inlet pipeline (5) is connected to the inlet of the activated carbon adsorption box (6); the outlet of the activated carbon adsorption box (6) is connected to the inlet of the deodorizing fan (8); the outlet of the deodorizing fan (8) is connected to the smoke duct system (10); and the outlet of the sludge storage bin system (2) and the outlet of the sludge receiving bin system (1) are both provided with an electric switch valve (4); Also included is a controller, wherein The controller is connected to a hydrogen sulfide detector (11), an ammonia detector (12), an electric switch valve (4) and a deodorizing blower (8); The outlet of the sludge storage bin system (2) and the outlet of the sludge receiving bin system (1) are both connected to the inlet of the activated carbon adsorption box inlet pipeline (5) through the branch pipeline system (3).

2. The activated carbon adsorption deodorization system based on thermal power plant sludge combustion according to claim 1 is characterized in that: The outlet of the activated carbon adsorption box (6) is connected to the inlet of the deodorizing blower (8) via the activated carbon adsorption box outlet pipeline (7).

3. The activated carbon adsorption deodorization system based on thermal power plant sludge combustion according to claim 1 is characterized in that: The outlet of the deodorizing fan (8) is connected to the smoke and air duct system (10) via the deodorizing fan outlet pipeline (9).

4. The activated carbon adsorption deodorization system based on thermal power plant sludge combustion according to claim 1 is characterized in that: The number of the sludge receiving bin system (1) is one or more.

5. The activated carbon adsorption deodorization system based on thermal power plant sludge co-combustion according to claim 1 is characterized in that: The number of the sludge storage silo system (2) is one or more.

6. The activated carbon adsorption deodorization system based on thermal power plant sludge co-combustion according to claim 1 is characterized in that: The deodorizing fan (8) is a variable frequency fan.

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