Incineration device for drying municipal sludge

Abstract

The incineration device comprises an incineration box and a heat recovery mechanism, a liquid outlet pipe is arranged on the right side of a steam heat exchanger, a pump is arranged at one end of the liquid outlet pipe, a gas-liquid separator is arranged on the left side of the pump, and a gas outlet pipe is arranged at the top end of the gas-liquid separator; sludge is conveyed into the incineration box through the conveying pump to be incinerated, smoke heat energy generated in the incineration process rises, heat exchange is carried out through the steam heat exchanger, liquid in the smoke heat exchanger is heated, then smoke is exhausted through the smoke purifier, and the smoke is discharged through the gas-liquid separator. Liquid heated by the steam heat exchanger is input into the gas-liquid separator through the liquid outlet pipe and the pump, the gas-liquid separator can separate steam from the liquid, the steam enters the heating groove in the stirring tank through the gas outlet pipe to preheat the sludge, the combustion efficiency and the energy utilization rate are improved, the liquid is sent into the steam heat exchanger again through the liquid return pipe, and the sludge is recycled. Reciprocating circulation improves energy utilization rate and reduces cost.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge incineration, in particular to an incineration device for municipal sludge drying. Background Technique

[0002] In recent years, while the industrialization level and living standard have been continuously improving, the amount of domestic sewage and industrial sewage has also been increasing. Although a large number of sewage treatment facilities have been invested, a large amount of sludge will be generated during the sewage treatment process. The discharge of sludge without effective treatment will cause great harm to the land environment and human health, and sludge treatment has attracted more and more attention.

[0003] According to the search, a sludge pyrolysis incineration device with the utility model patent number: CN220689086U, including an incineration box for incinerating sludge, a partition board is inserted at the bottom end of the incineration box, a support frame is fixedly communicated with the bottom end of the incineration box, and a moving mechanism for driving the partition board to move is arranged inside the support frame; the moving mechanism includes a first rotating shaft arranged at the left end of the support frame, both the front and rear ends of the first rotating shaft are movably connected with the inside of the support frame through bearings, first gears are fixedly arranged at both the front and rear ends of the first rotating shaft, racks are fixedly arranged at both the front and rear sides of the bottom end of the partition board, the first gears are meshed with the racks, and the rear end of the first rotating shaft penetrates through the support frame and extends out of the rear end of the support frame. The utility model can not only avoid the harm of hot gas to the workers' bodies, but also make the sludge incinerate more fully.

[0004] However, when implementing the above technical solutions, the following problems exist: the energy utilization efficiency of the above incineration equipment is relatively low, resulting in energy waste, and the heat energy of the flue gas generated by incineration cannot be fully utilized, which increases energy consumption and cost. Content of the Utility Model

[0005] The purpose of the utility model is to provide an incineration device for municipal sludge drying, so as to solve the problems of relatively low energy utilization efficiency of the incineration equipment, resulting in energy waste, and the heat energy of the flue gas generated by incineration cannot be fully utilized, which increases energy consumption and cost mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: an incineration device for municipal sludge drying, including an incineration box and a heat recovery mechanism, a discharge port is arranged at the bottom end of the incineration box, a heat recovery mechanism is arranged at the top end of the incineration box, a steam heat exchanger is arranged at the top end of the incineration box, a flue gas purifier is arranged at the top of the steam heat exchanger, a liquid outlet pipe is arranged on the right side of the steam heat exchanger, a pump is arranged at one end of the liquid outlet pipe, a gas-liquid separator is arranged on the left side of the pump, an air outlet pipe is arranged at the top of the gas-liquid separator, and a liquid return pipe is arranged on the right side of the gas-liquid separator.

[0007] Preferably, the heat recovery mechanism includes a steam heat exchanger, a flue gas purifier, a liquid outlet pipe, a pump, a gas-liquid separator, a gas outlet pipe, a liquid return pipe, a mixing tank, a feeding cover, a heating tank, a pressure valve, a mixing device, a conveying pipe, and a conveying pump. A mixing tank is provided on the left side of the gas outlet pipe. A feeding cover is provided at the top of the mixing tank. A heating tank is provided inside the heating tank. A pressure valve is provided on the left side of the heating tank. A mixing device is provided inside the mixing tank. A conveying pipe is provided on the lower side of the right end of the mixing device. A conveying pump is provided at the right end of the conveying pipe.

[0008] Preferably, the steam heat exchanger and the incinerator are connected by screws, and the steam heat exchanger is closely attached to the incinerator.

[0009] Preferably, the steam heat exchanger and the flue gas purifier are connected by screws, and the steam heat exchanger is closely attached to the flue gas purifier.

[0010] Preferably, the gas-liquid separator is hermetically connected to the mixing tank through the gas outlet pipe, and the gas outlet pipe is hermetically connected to the heating tank inside the mixing tank.

[0011] Preferably, the heating tank and the pressure valve are connected by a flange, and the heating tank is closely attached to the pressure valve.

[0012] Preferably, the mixing tank and the mixing device are connected by screws, and the mixing device is arranged in the center inside the mixing tank.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The conveying pump sends the sludge into the incinerator for incineration. The heat energy of the flue gas generated during the incineration process rises and is exchanged heat through the steam heat exchanger to heat the liquid inside it. Then, the flue gas is discharged through the flue gas purifier. The liquid heated by the steam heat exchanger is input into the gas-liquid separator through the liquid outlet pipe and the pump. The gas-liquid separator can separate the steam and the liquid. The steam enters the heating tank inside the mixing tank through the gas outlet pipe to preheat the sludge, improving the combustion efficiency and energy utilization rate. The liquid return pipe sends the liquid back into the steam heat exchanger for reciprocating circulation, improving the energy utilization rate and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall external structure of the present utility model.

[0016] Figure 2 It is a schematic diagram of the rear-end structure of the device main body of the present utility model.

[0017] Figure 3 It is a schematic diagram of the sectional structure of the mixing tank of the present utility model.

[0018] Figure 4This is a schematic cross-sectional structure diagram of the steam heat exchanger of the present utility model.

[0019] In the figure: 1. Incineration tank; 2. Discharge port; 3. Heat recovery mechanism; 301. Steam heat exchanger; 302. Flue gas purifier; 303. Liquid outlet pipe; 304. Pump; 305. Gas-liquid separator; 306. Gas outlet pipe; 307. Liquid return pipe; 308. Stirring tank; 309. Feeding cover; 310. Heating tank; 311. Pressure valve; 312. Stirring device; 313. Delivery pipe; 314. Delivery pump. Specific embodiments

[0020] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1-4 , an embodiment provided by the present utility model: an incineration device for municipal sludge drying, including an incineration tank 1 and a heat recovery mechanism 3. A discharge port 2 is provided at the bottom end of the incineration tank 1, and a heat recovery mechanism 3 is provided at the top end of the incineration tank 1. A steam heat exchanger 301 is provided at the top end of the incineration tank 1. A flue gas purifier 302 is provided at the top end of the steam heat exchanger 301. A liquid outlet pipe 303 is provided on the right side of the steam heat exchanger 301. A pump 304 is provided at one end of the liquid outlet pipe 303. A gas-liquid separator 305 is provided on the left side of the pump 304. A gas outlet pipe 306 is provided at the top end of the gas-liquid separator 305. A liquid return pipe 307 is provided on the right side of the gas-liquid separator 305.

[0022] Further, the heat recovery mechanism 3 includes a steam heat exchanger 301, a flue gas purifier 302, a liquid outlet pipe 303, a pump 304, a gas-liquid separator 305, a gas outlet pipe 306, a liquid return pipe 307, a stirring tank 308, a feeding cover 309, a heating tank 310, a pressure valve 311, a stirring device 312, a conveying pipe 313 and a conveying pump 314. A stirring tank 308 is arranged on the left side of the gas outlet pipe 306. A feeding cover 309 is arranged at the top of the stirring tank 308. A heating tank 310 is arranged inside the heating tank 310. A pressure valve 311 is arranged on the left side of the heating tank 310. A stirring device 312 is arranged inside the stirring tank 308. A conveying pipe 313 is arranged on the lower side of the right end of the stirring device 312. A conveying pump 314 is arranged at the right end of the conveying pipe 313. Through such an arrangement, the conveying pump 314 sends the sludge into the incineration box 1 for incineration. The heat energy of the flue gas generated during the incineration process rises and is exchanged through the steam heat exchanger 301 to heat the liquid inside it. Then, the flue gas is discharged through the flue gas purifier 302. The liquid heated by the steam heat exchanger 301 is input into the gas-liquid separator 305 through the liquid outlet pipe 303 and the pump 304. The gas-liquid separator 305 can separate the steam and the liquid. The steam enters the heating tank 310 inside the stirring tank 308 through the gas outlet pipe 306 to preheat the sludge, improving the combustion efficiency and energy utilization rate. The liquid return pipe 307 sends the liquid back into the steam heat exchanger 301 for reciprocating circulation, improving the energy utilization rate and reducing costs.

[0023] Further, the steam heat exchanger 301 and the incineration box 1 are connected by screws, and the steam heat exchanger 301 is in close contact with the incineration box 1. Through such an arrangement, the heat energy of the flue gas can be fully utilized, improving the energy utilization efficiency.

[0024] Further, the steam heat exchanger 301 and the flue gas purifier 302 are connected by screws, and the steam heat exchanger 301 is in close contact with the flue gas purifier 302. Through such an arrangement, the flue gas purifier 302 can purify the flue gas generated by incineration, ensuring environmental protection production.

[0025] Further, the gas-liquid separator 305 is hermetically connected to the stirring tank 308 through the gas outlet pipe 306, and the gas outlet pipe 306 is hermetically connected to the heating tank 310 inside the stirring tank 308. Through such an arrangement, the steam enters the heating tank 310 inside the stirring tank 308 through the gas outlet pipe 306 to preheat the sludge, improving the combustion efficiency and energy utilization rate.

[0026] Further, the heating tank 310 and the pressure valve 311 are connected by a flange, and the heating tank 310 is in close contact with the pressure valve 311. Through such an arrangement, the pressure valve 311 can adjust the internal pressure of the heating tank 310, with high safety.

[0027] Further, the mixing tank 308 and the mixing device 312 are connected by screws. The mixing device 312 is arranged in the center inside the mixing tank 308. With such an arrangement, the mixing device 312 is arranged at the bottom of the connecting frame inside the mixing tank 308. The connecting frame is grid-shaped, preventing sludge from failing to enter the mixing tank 308. The mixing device 312 can stir the sludge, preheat the sludge evenly, and improve the thermal energy utilization rate.

[0028] Working principle: First, open the feeding cover 309 at the top of the mixing tank 308, put the sludge into the mixing tank 308, and send the sludge into the incinerator 1 through the delivery pump 314 for incineration. The heat energy of the flue gas generated during the incineration process rises and is exchanged heat through the steam heat exchanger 301 to heat the liquid inside it. Then, the flue gas is discharged through the flue gas purifier 302. The liquid heated by the steam heat exchanger 301 is input into the gas-liquid separator 305 through the liquid outlet pipe 303 and the pump 304. The gas-liquid separator 305 can separate the steam and the liquid. The steam enters the heating tank 310 inside the mixing tank 308 through the gas outlet pipe 306 to preheat the sludge, improve the combustion efficiency and energy utilization rate. The mixing device 312 can stir the sludge and preheat it evenly. The air pressure valve 311 can adjust the air pressure inside the heating tank 310, with high safety. The return liquid pipe 307 sends the liquid back into the steam heat exchanger 301 for reciprocating circulation. Finally, the waste is discharged through the discharge port 2. Such an arrangement can improve the energy utilization rate and reduce costs, thus completing the use process of an incineration device for municipal sludge drying.

[0029] The above are only embodiments of the present invention. Specific structures and characteristics and other common knowledge well known in the art are not described in detail herein. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An incineration device for municipal sludge drying, comprising an incineration box (1) and a heat recovery mechanism (3), characterized in that: The bottom end of the incineration box (1) is provided with a discharge port (2), the top end of the incineration box (1) is provided with a heat recovery mechanism (3), the top end of the incineration box (1) is provided with a steam heat exchanger (301), the top end of the steam heat exchanger (301) is provided with a flue gas purifier (302), the right side of the steam heat exchanger (301) is provided with a liquid outlet pipe (303), one end of the liquid outlet pipe (303) is provided with a pump (304), the left side of the pump (304) is provided with a gas-liquid separator (305), the top end of the gas-liquid separator (305) is provided with a gas outlet pipe (306), and the right side of the gas-liquid separator (305) is provided with a liquid return pipe (307).

2. An incineration device for municipal sludge drying according to claim 1, characterized in that: The heat recovery mechanism (3) includes a steam heat exchanger (301), a flue gas purifier (302), a liquid outlet pipe (303), a pump (304), a gas-liquid separator (305), a gas outlet pipe (306), a liquid return pipe (307), a stirring tank (308), a feeding cover (309), a heating tank (310), a pressure valve (311), a stirring device (312), a conveying pipe (313) and a conveying pump (314). The left side of the gas outlet pipe (306) is provided with a stirring tank (308), the top end of the stirring tank (308) is provided with a feeding cover (309), the heating tank (310) is internally provided with a heating tank (310), the left side of the heating tank (310) is provided with a pressure valve (311), the stirring tank (308) is internally provided with a stirring device (312), the lower side of the right end of the stirring device (312) is provided with a conveying pipe (313), and the right end of the conveying pipe (313) is provided with a conveying pump (314).

3. An incineration device for municipal sludge drying according to claim 1, characterized in that: The steam heat exchanger (301) and the incineration box (1) are connected by screws, and the steam heat exchanger (301) is in close contact with the incineration box (1).

4. An incineration device for municipal sludge drying according to claim 1, characterized in that: The steam heat exchanger (301) and the flue gas purifier (302) are connected by screws, and the steam heat exchanger (301) is in close contact with the flue gas purifier (302).

5. An incineration device for municipal sludge drying according to claim 2, characterized in that: The gas-liquid separator (305) is hermetically connected to the stirring tank (308) through the gas outlet pipe (306), and the gas outlet pipe (306) is hermetically connected to the heating tank (310) inside the stirring tank (308).

6. The incineration device for municipal sludge drying according to claim 2, wherein: The heating tank (310) and the pressure valve (311) are connected by a flange, and the heating tank (310) is in close contact with the pressure valve (311).

7. An incineration device for municipal sludge drying according to claim 2, characterized in that: The stirring tank (308) and the stirring device (312) are connected by screws, and the stirring device (312) is arranged in the center of the stirring tank (308).

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