Sludge atomization equipment and sludge atomization incineration system

Abstract

The utility model relates to the technical field of urban sludge treatment, and particularly discloses sludge atomization equipment, which comprises a sludge conveying system, a compressed air conveying system and a sludge atomizer, the sludge conveying system is communicated with the sludge atomizer for conveying sludge, the compressed air conveying system is communicated with the sludge atomizer for conveying sludge, and the compressed air conveying system is communicated with the sludge atomizer for conveying sludge. The sludge conveying system is used for conveying compressed air, the two steam generating devices are used for generating steam, one steam generating device is arranged between the sludge conveying system and the sludge atomizer and used for mixing the steam generated by the steam generating device with sludge, and the other steam generating device is arranged between the sludge atomizer and the sludge conveying system. And the other steam generating device is arranged between the compressed air conveying system and the sludge atomizer and is used for mixing the steam generated by the steam generating device with the compressed air.

Description

Technical Field

[0001] The utility model relates to the technical field of urban sludge treatment, in particular to sludge atomization equipment and a sludge atomization incineration system. Background Art

[0002] At present, the urbanization process is accelerating, people's living standards are improving, and the amount of urban sludge has doubled. The current landfill, composting, and aerobic anaerobic technologies are hindered by the lack of land and secondary pollution. There is an urgent need for an efficient, environmentally friendly, reduced, and harmless disposal process. The birth of sludge incineration treatment technology solves the secondary pollution problem in sludge treatment. The principle of this technology is to use a special spray gun to atomize the sludge through compressed air. The atomized sludge is instantly dried by heat exchange with high-temperature flue gas. The dried sludge enters the rotary kiln for incineration, and the flue gas generated after incineration is used for drying the atomized sludge; due to the small particle size of the atomized sludge, the specific surface area is high, and the drying process is in direct contact with the high-temperature flue gas, so that the overall thermal efficiency of the process is high, and the energy consumption is lower than other incineration technologies, and the economic advantage is obvious. The core of the existing technology is the atomization, drying and incineration of sludge. It can be foreseen that the efficiency of sludge atomization and drying will directly affect the operating cost of the entire process. Therefore, a sludge atomization incineration system is provided. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sludge atomization device.

[0004] The utility model is realized by the following technical solutions:

[0005] A sludge atomization equipment comprises a sludge conveying system, a compressed air conveying system, and a sludge atomizer, wherein the sludge conveying system is connected to the sludge atomizer for conveying sludge, and the compressed air conveying system is connected to the sludge atomizer for conveying compressed air. The equipment also comprises two steam generating devices for generating steam, wherein one of the steam generating devices is arranged between the sludge conveying system and the sludge atomizer for mixing the steam generated by the steam generating device with sludge, and the other steam generating device is arranged between the compressed air conveying system and the sludge atomizer for mixing the steam generated by the steam generating device with compressed air.

[0006] As a further improvement of the utility model, a mixing cylinder is provided on the connecting pipeline between the sludge conveying system and the sludge atomizer, and the mixing cylinder is connected to the steam generating device. As a further improvement of the utility model, the sludge conveying system includes a sludge incoming silo and a wet sludge silo, the sludge incoming silo is connected to the wet sludge silo, and the wet sludge silo is connected to the mixing cylinder.

[0007] As a further improvement of the present invention, a first sludge pump is provided on the connecting pipeline between the sludge inlet silo and the wet sludge silo, and a second sludge pump is provided on the connecting pipeline between the wet sludge silo and the mixing drum.

[0008] As a further improvement of the utility model, a sludge filter is arranged on the connecting pipeline between the sludge inlet silo and the wet sludge silo.

[0009] As a further improvement of the present invention, the compressed air delivery system includes an air compressor and a heat exchanger, the air compressor is connected to the air inlet of the heat exchanger, the air outlet of the heat exchanger is connected to the sludge atomizer, and the connecting pipeline between the sludge atomizer and the heat exchanger is connected to another steam generating device.

[0010] As a further improvement of the utility model, an electronic valve is provided on the connecting pipeline between the sludge atomizer and the heat exchanger.

[0011] Based on the same concept, the utility model also provides a sludge atomization incineration system, including an incinerator, and also including the sludge atomization device as described above, the sludge atomizer is arranged on the incinerator, and the steam generating device is connected to the exhaust gas outlet of the incinerator. As a further improvement of the utility model, the steam generating device includes a water tank body, a steam outlet is provided on the water tank body, a metal heat conducting pipe is arranged in the water tank body, and the air inlet of the metal heat conducting pipe is connected to the incinerator.

[0012] As a further improvement of the utility model, a water inlet pipe is arranged on the water tank body, and a control valve is arranged on the water inlet pipe.

[0013] Beneficial effects of the utility model:

[0014] 1. By mixing steam into the sludge, the water content of the sludge is increased, thereby improving the fluidity of the sludge and thus improving the sludge atomization efficiency.

[0015] 2. By mixing sludge with steam, the sludge temperature rises, which increases the initial temperature of the sludge entering the drying tower, thereby improving the drying efficiency of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a detailed description of the preferred implementation examples of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2It is a schematic diagram of the structure of the steam generating device in the embodiment of the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0021] refer to Figure 1 to Figure 2 , the utility model embodiment discloses:

[0022] A sludge atomization incineration system comprises an incinerator 1 and sludge atomization equipment, wherein the sludge atomization equipment comprises a sludge conveying system, a compressed air conveying system, and a sludge atomizer 2, wherein the sludge atomizer 2 is arranged on the incinerator 1; the sludge conveying system is connected to the sludge atomizer 2 for conveying sludge, and the compressed air conveying system is connected to the sludge atomizer 2 for conveying compressed air, and further comprises two steam generating devices 3 for generating steam, wherein one of the steam generating devices 3 is arranged between the sludge conveying system and the sludge atomizer 2 for mixing the steam generated by the steam generating device 3 with the sludge, and the other steam generating device 3 is arranged between the compressed air conveying system and the sludge atomizer 2 for mixing the steam generated by the steam generating device 3 with compressed air.

[0023] Wherein, a mixing drum 4 is arranged on the connecting pipeline between the sludge conveying system and the sludge atomizer 2, and the mixing drum 4 is connected to the steam generating device 3. Specifically, the sludge conveying system includes a sludge incoming silo 5 and a wet sludge silo 6, wherein the sludge incoming silo 5 is connected to the wet sludge silo 6, and the wet sludge silo 6 is connected to the mixing drum 4; a first sludge pump 7 is arranged on the connecting pipeline between the sludge incoming silo 5 and the wet sludge silo 6, and a second sludge pump 8 is arranged on the connecting pipeline between the wet sludge silo 6 and the mixing drum 4; a sludge filter 9 is arranged on the connecting pipeline between the sludge incoming silo 5 and the wet sludge silo 6, and filtering the sludge through the sludge filter 9 can prevent the subsequent sludge atomizer 2 from being blocked; sludge with a certain water content (for example, a water content of 60% of the sludge) is transported to the sludge inlet silo 5, and the sludge is pumped into the wet sludge silo 6 for temporary storage through the first sludge pump 7; thereafter, the sludge in the wet sludge silo 6 is pumped into the mixing drum 4 through the second sludge pump 8; at the same time, the steam generating device 3 connected to the mixing drum 4 generates steam, and inputs the steam into the mixing drum 4 to mix with the sludge, thereby increasing the sludge temperature and, to a certain extent, increasing the water content of the sludge (for example, the water content of the sludge is increased from 60% to 70%), thereby providing the fluidity of the sludge (it is known from the prior art that the higher the water content of the sludge, the better its fluidity), thereby improving the sludge atomization efficiency.

[0024] The compressed air delivery system comprises an air compressor 10 and a heat exchanger 11. The air compressor 10 is connected to the air inlet of the heat exchanger 11, and the air outlet of the heat exchanger 11 is connected to the sludge atomizer 2. The connecting pipeline between the sludge atomizer 2 and the heat exchanger 11 is connected to another steam generating device 3. An electronic valve 12 is arranged on the connecting pipeline between the sludge atomizer 2 and the heat exchanger 11. In the prior art, the sludge atomizer 2 is usually powered by compressed air to atomize the sludge. Specifically, in this embodiment, the air compressor 10 compresses the air, and the compressed air passes through the heat exchanger 11. The heat exchanger 11 initially acts on the compressed air (in the prior art, the heat exchanger 11 has the function of controlling the compressed air to achieve cooling or heating). In the utility model patent, the heat exchanger 11 is used to control the function of heating the compressed air. The specific working principle is well known to those skilled in the art and will not be described here), so that the temperature of the compressed air is initially increased; at the same time, another steam generating device 3 connected to the connecting pipeline between the sludge atomizer 2 and the heat exchanger 11 generates steam and mixes with the compressed air, so that the compressed air is further heated, and finally cooperates with the sludge atomizer 2 to atomize the sludge, thereby increasing the initial temperature of the sludge entering the incinerator 1, and making the sludge easier to dry (the atomized sludge is in contact with the high-temperature flue gas generated in the incinerator 1 for heat exchange. At this time, the initial temperature of the sludge is higher and the moisture therein is easier to evaporate), thereby improving the drying efficiency of the sludge.

[0025] In the present embodiment, a steam generating device is also disclosed, and the steam generating device 3 is connected to the tail gas outlet of the incinerator 1; specifically, the steam generating device 3 includes a water tank body 301, and a steam outlet 302 is opened on the water tank body 301, and the steam outlet 302 is connected to the sludge conveying system or the compressed air conveying system through a pipeline; a metal heat conducting pipe 303 is arranged in the water tank body 301, and the air inlet of the metal heat conducting pipe 303 is connected to the tail gas outlet of the incinerator 1 through a pipeline. In addition, the water tank body 301 is also provided with a There is an exhaust port, which is connected with the exhaust port of the metal heat-conducting pipe 303; and, a water inlet pipe 304 is provided on the water tank body 301, and a control valve is provided on the water inlet pipe 304; during specific operation, water is first injected into the water tank body 301 through the water inlet pipe 304, and then, at the same time, the incinerator 1 burns inside, and part of the waste heat exhaust gas generated enters the metal heat-conducting pipe 303, and the waste heat of the exhaust gas can heat the metal heat-conducting pipe 303, and the metal heat-conducting pipe 303 further heats the water in the water tank body 301, thereby generating steam.

[0026] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A sludge atomization device, comprising a sludge conveying system, a compressed air conveying system, and a sludge atomizer (2), wherein the sludge conveying system is connected to the sludge atomizer (2) for conveying sludge, and the compressed air conveying system is connected to the sludge atomizer (2) for conveying compressed air, characterized in that: It also includes two steam generating devices (3) for generating steam, wherein one of the steam generating devices (3) is arranged between the sludge conveying system and the sludge atomizer (2) for mixing the steam generated by the steam generating device (3) with the sludge, and the other steam generating device (3) is arranged between the compressed air conveying system and the sludge atomizer (2) for mixing the steam generated by the steam generating device (3) with compressed air.

2. A sludge atomization equipment according to claim 1, characterized in that: A mixing cylinder (4) is provided on the connecting pipeline between the sludge conveying system and the sludge atomizer (2), and the mixing cylinder (4) is connected to the steam generating device (3).

3. A sludge atomization equipment according to claim 2, characterized in that: The sludge conveying system comprises a sludge incoming silo (5) and a wet sludge silo (6), the sludge incoming silo (5) being connected to the wet sludge silo (6), and the wet sludge silo (6) being connected to the mixing drum (4).

4. A sludge atomization equipment according to claim 3, characterized in that: A first sludge pump (7) is provided on the connecting pipeline between the sludge incoming silo (5) and the wet sludge silo (6), and a second sludge pump (8) is provided on the connecting pipeline between the wet sludge silo (6) and the mixing cylinder (4).

5. A sludge atomization equipment according to claim 4, characterized in that: A sludge filter (9) is provided on the connecting pipeline between the sludge incoming silo (5) and the wet sludge silo (6).

6. The sludge atomization equipment according to claim 1, characterized in that: The compressed air delivery system comprises an air compressor (10) and a heat exchanger (11); the air compressor (10) is connected to an air inlet of the heat exchanger (11); an air outlet of the heat exchanger (11) is connected to the sludge atomizer (2); and a connecting pipeline between the sludge atomizer (2) and the heat exchanger (11) is connected to another steam generating device (3).

7. A sludge atomization device according to claim 6, characterized in that: An electronic valve (12) is provided on the communication pipeline between the sludge atomizer (2) and the heat exchanger (11).

8. A sludge atomization incineration system, comprising an incinerator (1), characterized in that: It also comprises the sludge atomization equipment according to any one of claims 1 to 7, wherein the sludge atomizer (2) is arranged on the incinerator (1), and the steam generating device (3) is connected to the tail gas outlet of the incinerator (1).

9. A sludge atomization incineration system according to claim 8, characterized in that: The steam generating device (3) comprises a water tank body (301), a steam outlet (302) is provided on the water tank body (301), a metal heat conducting pipe (303) is arranged inside the water tank body (301), and an air inlet of the metal heat conducting pipe (303) is connected to the incinerator (1).

10. A sludge atomization incineration system according to claim 9, characterized in that: The water tank body (301) is provided with a water inlet pipe (304), and the water inlet pipe (304) is provided with a control valve.

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