A deodorization system based on a sludge blending and washing process in a thermal power plant

Abstract

The application discloses a deodorization system based on a sludge mixed combustion water washing process of a thermal power plant, and relates to the technical field of sludge mixed combustion water washing processes. The water washing tower system comprises a tower body, a water washing pump, a spraying layer and a water washing liquid pool, wherein the water washing liquid pool is located at the bottom of the tower body, the spraying layer is located in the tower body, and the outlet of the water washing liquid pool is connected with the inlet of the spraying layer through the water washing pump; the outlet of a sludge receiving bin system and the outlet of a sludge storage bin system are both connected with the inlet of a water washing tower system inlet pipeline, the outlet of the water washing tower system inlet pipeline is inserted into the water washing liquid pool, the gas outlet at the top of the tower body is connected with the inlet of a deodorization fan; a hydrogen sulfide detector and an ammonia gas detector are arranged on the sludge receiving bin system and the sludge storage bin system, and electrically-controlled on-off valves are arranged at the outlet of the sludge receiving bin system and the outlet of the sludge storage bin system.

Description

Technical Field

[0001] The invention belongs to the technical field of deodorization and relates to a deodorization system based on a thermal power plant sludge mixing and burning water washing process. 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 response to the existing deodorization systems and methods for sludge co-combustion in thermal power plants, a targeted water washing process deodorization system and method is needed. By analyzing the odor and harmful gases in the sludge, the appropriate water washing absorption 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 a deodorization system based on the water washing process of thermal power plant sludge mixing, which can use water washing to treat low-concentration sludge odor and gaseous harmful gases.

[0005] To achieve the above-mentioned purpose, the deodorization system based on the thermal power plant sludge mixing and water washing process of the present invention includes a sludge receiving bin system, a sludge storage bin system, a water washing tower system inlet pipeline, a water washing tower system and a deodorization fan;

[0006] The water washing tower system includes a tower body, a water washing pump, a spray layer and a water washing liquid pool, wherein the water washing liquid pool is located at the bottom of the tower body, the spray layer is located in the tower body, and the outlet of the water washing liquid pool is connected to the inlet of the spray layer through the water washing pump;

[0007] The outlet of the sludge receiving bin system and the outlet of the sludge storage bin system are both connected to the inlet of the water scrubber system inlet pipeline, the outlet of the water scrubber system inlet pipeline is inserted into the water washing liquid pool, and the gas outlet at the top of the tower body is connected to the inlet of the deodorizing fan;

[0008] The sludge receiving bin system and the sludge storage bin system are both provided with a hydrogen sulfide detector and an ammonia detector, and the outlet of the sludge receiving bin system and the outlet of the sludge storage bin system are both provided with an electric switch valve.

[0009] The utility model also includes a controller, which is connected with a hydrogen sulfide detector, an ammonia detector, an electric switch valve and a deodorizing fan.

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

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

[0012] The gas outlet at the top of the water scrubber system is connected to the inlet of the deodorizing fan through the water scrubber system outlet pipeline.

[0013] The outlet of the deodorizing fan is connected to the smoke and air duct system through the deodorizing fan outlet pipeline.

[0014] The outlet of the sludge receiving bin system and the outlet of the sludge storage bin system are both connected to the inlet of the water washing tower system inlet pipeline through the branch pipeline system.

[0015] It also includes a smoke and air duct system, and the outlet of the deodorizing fan is connected to the smoke and air duct system.

[0016] The present invention has the following beneficial effects:

[0017] The deodorization system based on the water washing process of thermal power plant sludge blending described in the present invention adopts a water washing process to remove odor and harmful gases during specific operation, that is, the odor and hazardous gases are first washed with water in a water washing liquid pool, and then rise. During the rising process, the water washing liquid sprayed by the spray layer is sprayed and washed to achieve secondary water washing of the odor and hazardous gases, thereby utilizing water washing to treat low-concentration sludge odor and gas harmful gases. The operation is simple, convenient, and extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Among them, 1 is the sludge 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 water washing tower system inlet pipeline, 6 is the water washing tower system, 7 is the spray layer, 8 is the water washing liquid pool, 9 is the water washing pump, 10 is the water washing tower system outlet pipeline, 11 is the deodorization fan, 12 is the deodorization fan outlet pipeline, 13 is the smoke and air duct system, 14 is the hydrogen sulfide detector, and 15 is the ammonia detector. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] refer to Figure 1 The deodorization system based on the thermal power plant sludge mixing and water washing process of the present invention includes a sludge receiving bin system 1, a sludge storage bin system 2, a branch pipeline system 3, an electric switch valve 4, a water washing tower system inlet pipeline 5, a water washing tower system 6, a spray layer 7, a water washing liquid tank 8, a water washing pump 9, a water washing tower system outlet pipeline 10, a deodorizing fan 11, a deodorizing fan outlet pipeline 12, a smoke and air duct system 13, a hydrogen sulfide detector 14, and an ammonia detector 15;

[0023] The outlet of the sludge receiving bin system 1 and the outlet of the sludge storage bin system 2 are both connected to the inlet of the water scrubber system inlet pipeline 5, the outlet of the water scrubber system inlet pipeline 5 is connected to the inlet of the water scrubber system 6, the gas outlet at the top of the water scrubber system 6 is connected to the inlet of the deodorizing fan 11 through the water scrubber system outlet pipeline 10, and the outlet of the deodorizing fan 11 is connected to the smoke and air duct system 13 through the deodorizing fan outlet pipeline 12.

[0024] The sludge receiving bin system 1 and the sludge storage bin system 2 are both provided with a hydrogen sulfide detector 14 and an ammonia detector 15 , and an electric switch valve 4 is both provided at the outlet of the sludge receiving bin system 1 and the outlet of the sludge storage bin system 2 .

[0025] The controller is connected to the hydrogen sulfide detector 14, the ammonia detector 15, the electric switch valve 4 and the deodorizing fan 11. The number of the sludge receiving bin systems 1 is one or more, and the number of the sludge storage bin systems 2 is one or more.

[0026] During operation, the deodorizing fan 11 is used to provide a negative pressure environment for the sludge receiving bin system 1 and the sludge storage bin system 2, so that odor and other harmful gases enter the water washing tower system 6 along the branch pipe system 3, the electric switch valve 4 and the water washing tower system inlet pipe 5, and then are absorbed and treated by the water washing liquid. The treated flue gas is discharged to the smoke and air duct system 13 through the water washing tower system outlet pipe 10, the deodorizing fan 11 and the deodorizing fan outlet pipe 12.

[0027] During operation, the concentrations of hydrogen sulfide and ammonia in the sludge receiving bin system 1 and the sludge storage bin system 2 are monitored by the hydrogen sulfide detector 14 and the ammonia detector 15. When the concentration of hydrogen sulfide or ammonia exceeds the standard, the corresponding electric switch valve 4 is controlled to open, and the deodorizing fan 11 is turned on at the same time.

[0028] The water washing tower system 6 includes a tower body, a water washing pump 9, a spray layer 7 and a water washing liquid pool 8, wherein the water washing liquid pool 8 is located at the bottom of the tower body, the spray layer 7 is located in the tower body, and the outlet of the water washing liquid pool 8 is connected to the inlet of the spray layer 7 through the water washing pump 9. The outlet of the water washing tower system inlet pipeline 5 is inserted into the water washing liquid pool 8. During operation, the odor and hazardous gas are first washed with water in the water washing liquid pool 8 and then rise. During the rising process, the water washing liquid sprayed by the spray layer 7 is sprayed and washed to achieve secondary water washing of the odor and hazardous gas. The gas after water washing is then discharged through the smoke and air duct system 13 after passing through the water washing tower system outlet pipeline 10, the deodorizing fan 11 and the deodorizing fan outlet pipeline 12 in sequence.

[0029] Different numbers of branch pipe systems 3 and different numbers of hydrogen sulfide detectors 14 and ammonia detectors 15 are provided in the sludge receiving bin system 1 and the sludge storage bin system 2 as needed.

[0030] In actual operation, according to the analysis that the main components of sludge odor and harmful gases are hydrogen sulfide and ammonia, a water washing liquid pool 8 suitable for absorbing the above odor and harmful gases is selected, and a variable frequency fan is selected as the deodorizing fan 11.

[0031] It should be noted that the low concentration of odor and hazardous gases is suitable for the water washing process. The solid precipitation in the washing liquid is removed at a fixed period and discharged into the drying furnace of the sludge co-combustion system for drying, and then transported to the furnace for combustion treatment.

[0032] 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 the sludge mixing and water washing process of thermal power plants, characterized in that: It includes a sludge receiving bin system (1), a sludge storage bin system (2), a water washing tower system inlet pipeline (5), a water washing tower system (6) and a deodorizing fan (11); The water washing tower system (6) includes a tower body, a water washing pump (9), a spray layer (7) and a water washing liquid pool (8), wherein the water washing liquid pool (8) is located at the bottom of the tower body, the spray layer (7) is located in the tower body, and the outlet of the water washing liquid pool (8) is connected to the inlet of the spray layer (7) through the water washing pump (9); The outlet of the sludge receiving bin system (1) and the outlet of the sludge storage bin system (2) are both connected to the inlet of the water washing tower system inlet pipeline (5), the outlet of the water washing tower system inlet pipeline (5) is inserted into the water washing liquid pool (8), and the gas outlet at the top of the tower body is connected to the inlet of the deodorizing fan (11); The sludge receiving bin system (1) and the sludge storage bin system (2) are both provided with a hydrogen sulfide detector (14) and an ammonia detector (15), and an electric switch valve (4) is provided at the outlet of the sludge receiving bin system (1) and the outlet of the sludge storage bin system (2); It also includes a controller connected to the hydrogen sulfide detector (14), the ammonia detector (15), the electric switch valve (4) and the deodorizing fan (11); It also includes a smoke and air duct system (13), and the outlet of the deodorizing fan (11) is connected to the smoke and air duct system (13).

2. The deodorization system based on the thermal power plant sludge mixing and water washing process according to claim 1 is characterized in that: The number of the sludge receiving bin system (1) is one or more.

3. The deodorization system based on the thermal power plant sludge mixing and water washing process according to claim 1 is characterized in that: The number of the sludge storage silo system (2) is one or more.

4. The deodorization system based on the thermal power plant sludge mixing and water washing process according to claim 1 is characterized in that: The gas outlet at the top of the water scrubber system (6) is connected to the inlet of the deodorizing blower (11) via the water scrubber system outlet pipeline (10).

5. The deodorization system based on the thermal power plant sludge mixing and water washing process according to claim 1 is characterized in that: The outlet of the deodorizing fan (11) is connected to the smoke and air duct system (13) via the deodorizing fan outlet pipeline (12).

6. The deodorization system based on the thermal power plant sludge mixing and water washing process according to claim 1 is characterized in that: The outlet of the sludge receiving bin system (1) and the outlet of the sludge storage bin system (2) are both connected to the inlet of the water washing tower system inlet pipeline (5) via the branch pipeline system (3).

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