A stable steam production system for waste incineration power generation

Abstract

This utility model relates to the field of waste-to-energy incineration technology, and proposes a stable steam production system for waste-to-energy incineration. The system includes a main boiler body, with a secondary boiler body integrally connected to its outer surface. A steam inlet is integrally connected to the upper end of the main boiler body. A mounting cover is installed and connected to the lower end of the main boiler body, with a pump pipe and an exhaust pipe connected to its lower left and right sides, respectively. A flue gas treatment pipe is installed and connected inside the secondary boiler body, with its lower end penetrating the lower end of the secondary boiler body and communicating with a connector. The upper end of the conveying pipe is connected to a connecting pipe, and its lower end penetrates the flue gas outlet pipe and communicates with the exhaust pipe. This stable steam production system for waste-to-energy incineration facilitates ash removal and protection of the waste heat boiler used for steam production, extending its service life. It also facilitates the full absorption of heat from the flue gas while preventing dust in the flue gas from being released into the air, reducing pollution.

Description

Technical Field

[0001] This utility model relates to the field of waste incineration power generation technology, specifically to a stable steam production system for waste incineration power generation. Background Technology

[0002] With the rapid development of my country's economy and the continuous improvement of waste quality, waste incineration can achieve the reduction, harmlessness and resource utilization of waste treatment. This method has become one of the most effective methods for waste treatment. It can not only generate electricity from calorific value and turn waste into treasure, but also reduce landfill and greatly reduce the pollution of waste to the environment. Since the flue gas produced by waste incineration contains a large amount of acidic gas components, it is easy to cause low-temperature corrosion. Generally, a steam air preheater is set up to heat the air to above the dew point of acidic gases, thereby reducing low-temperature corrosion and improving boiler efficiency. The waste heat boiler body is usually composed of economizer, evaporator, superheater and heat exchange tube groups and containers such as header and steam drum. Economizer completes the task of preheating the boiler feedwater. Evaporator turns the feedwater into saturated steam. Superheater reheats the saturated steam to make it into superheated steam. Reheater makes it reach the set reheat temperature. Steam drum collects the feedwater from economizer and the steam-water mixture from economizer, and provides qualified saturated steam to enter the superheater or supply users to complete the overall operation of waste heat boiler.

[0003] Prior art 1 (Application No.: CN201820892897.7) discloses a steam utilization device for a waste-to-energy plant, comprising: a steam-flue gas heater for heating the flue gas discharged from the waste incinerator using saturated steam from the steam drum of the waste incinerator, wherein the saturated steam is converted into high-pressure condensate after heat exchange; and a flash evaporator for flash evaporating the high-pressure condensate discharged from the steam-flue gas heater to form secondary steam and low-pressure condensate, wherein the secondary steam is introduced into a preheater and the low-pressure condensate is introduced into a deaerator. The steam utilization device for a waste-to-energy plant according to this invention, by setting a flash evaporator after the SGH (steam generator), uses the secondary steam generated after flash evaporation of the high-pressure condensate discharged from the SGH and the steam from the turbine as heating steam for the preheater, thereby not only reducing the turbine's extraction steam volume and improving the turbine's power generation efficiency, bringing considerable benefits to the power plant; but also achieving heat balance in the deaerator.

[0004] However, during the implementation of the relevant technologies, the steam utilization device used in the waste incineration power plant was found to have the following problems: during the entire process of flue gas entering the device to produce steam, the flue gas is prone to contaminating the device, and it is also inconvenient to filter the flue gas, which easily pollutes the environment. Utility Model Content

[0005] This utility model proposes a stable steam production system for waste incineration power generation, which solves the problem in related technologies that flue gas easily pollutes the device during the entire process of flue gas entering the device to produce steam, and that it is also inconvenient to filter the flue gas, which easily pollutes the environment.

[0006] The technical solution of this utility model is as follows: a stable steam production system for waste incineration power generation, including a main pot body, a secondary pot body is integrally connected to the outer surface of the main pot body, and a steam transmission port is integrally connected to the upper end of the main pot body.

[0007] The mounting cover is installed and connected to the lower end of the main pot body, and the lower left and right sides of the mounting cover are respectively connected to the air pump pipe and the exhaust pipe.

[0008] Also includes:

[0009] A flue gas treatment pipe is installed inside the secondary pot body, and the lower end of the flue gas treatment pipe passes through the lower end of the secondary pot body and is connected to the connector.

[0010] The conveying pipe has a connecting pipe at its upper end and a connecting pipe at its lower end, which passes through a flue gas outlet pipe and is connected to the exhaust pipe body. The flue gas outlet pipe is connected to the main pot body by a flange.

[0011] Preferably, the secondary pot body is arranged at an equal angle on the outer surface of the main pot body, and the main pot body and the secondary pot body are connected, and the main pot body, the secondary pot body and the steam transmission port are connected.

[0012] Preferably, both the secondary boiler body and the flue gas treatment pipe are cylindrical structures, and the central axes of the secondary boiler body and the flue gas treatment pipe are the same straight line. The flue gas treatment pipe is connected to the flue gas inlet pipe flange through a connector, and the lower end of the flue gas inlet pipe is connected to the pump pipe body.

[0013] Preferably, the lower end of the connecting pipe is connected to a conveying pipe with a spiral structure, and both the connecting pipe and the conveying pipe are installed inside the main pot body. The upper and lower ends of the conveying pipe are connected to the connecting pipe and the exhaust pipe body respectively by screwing.

[0014] Preferably, the outer surface of the connecting pipe is provided with a connecting pipe at equal angles, and the connecting pipe passes through the secondary pot body and is connected to the flue gas treatment pipe.

[0015] Preferably, the connection between the connecting pipe and the flue gas treatment pipe has a hollow structure, and the inner wall of the flue gas treatment pipe is provided with an activated carbon adsorption plate at an incline, and the activated carbon adsorption plate is arranged in a crisscross pattern inside the flue gas treatment pipe.

[0016] Preferably, both the pump pipe and the exhaust pipe are L-shaped, and the right end flange of the exhaust pipe is connected to an exhaust port, which is a hollow spherical structure.

[0017] The working principle and beneficial effects of this utility model are as follows: It is mainly to facilitate the cleaning and protection of the waste heat boiler produced by the steam generation of waste incineration power generation, thereby improving its service life. At the same time, it also facilitates the full absorption of heat by the flue gas while preventing the dust in the flue gas from being discharged into the air, thus reducing pollution.

[0018] 1. In this utility model, a main pot body and a secondary pot body are provided. A conveying pipe is installed inside the main pot body, and a flue gas treatment pipe is installed inside the secondary pot body. This facilitates the secondary recovery of heat in the flue gas, thereby facilitating the full absorption of heat, improving the heat recovery rate in the flue gas, and making it convenient to use.

[0019] 2. In this utility model, a flue gas treatment pipe and a conveying pipe are provided. Both the flue gas treatment pipe and the conveying pipe are detachable from the main pot body and the secondary pot body, which facilitates installation and disassembly. This makes it easy to clean the smoke and dust inside the flue gas treatment pipe and the conveying pipe. At the same time, an activated carbon adsorption plate is inclinedly installed inside the flue gas treatment pipe to facilitate the full adsorption of flue gas and prevent the flue gas from being emitted into the air, thus avoiding environmental pollution.

[0020] 3. In this utility model, a connecting pipe and a connecting tube are provided. The connecting pipe, the connecting tube, the conveying pipe and the flue gas treatment pipe are connected to each other. The conveying pipe has a spiral structure, which facilitates the flow path of flue gas in the main pot body, thereby facilitating the main pot body to fully absorb the heat in the flue gas and making it convenient to use. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure of the conveying pipe, exhaust pipe body and connecting pipe proposed in this utility model;

[0024] Figure 3 The present utility model proposes Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the internal structure connecting the secondary boiler body and the flue gas treatment pipe proposed in this utility model.

[0026] In the diagram: 1. Main pot body; 2. Secondary pot body; 3. Steam inlet; 4. Flue gas inlet pipe; 5. Flue gas outlet pipe; 6. Mounting cover; 7. Pump pipe body; 8. Exhaust pipe body; 9. Connecting pipe; 10. Connecting pipe; 11. Transfer pipe; 12. Exhaust port; 13. Activated carbon adsorption plate; 14. Flue gas treatment pipe; 15. Connector. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] Please see Figures 1-4 This utility model provides a technical solution for a stable steam production system for waste incineration power generation: including a main boiler body 1, a secondary boiler body 2, a steam transmission port 3, a flue gas inlet pipe 4, a flue gas outlet pipe 5, a mounting cover 6, a pump pipe body 7, an exhaust pipe body 8, a connecting pipe 9, a connecting pipe 10, a transmission pipe 11, an exhaust port 12, an activated carbon adsorption plate 13, a flue gas treatment pipe 14, and a connector 15.

[0029] The working principle and usage process of this utility model are as follows: First, combined with... Figure 1 and Figure 4 As shown, the secondary pot body 2 is set at an equal angle on the outer surface of the main pot body 1, and the main pot body 1 and the secondary pot body 2 are connected. The main pot body 1, the secondary pot body 2 and the steam transmission port 3 are connected. The secondary pot body 2 and the flue gas treatment pipe 14 are both cylindrical structures, and the central axes of the secondary pot body 2 and the flue gas treatment pipe 14 are the same straight line. The flue gas treatment pipe 14 is connected to the flange of the flue gas inlet pipe 4 through the connector 15. The lower end of the flue gas inlet pipe 4 is connected to the pump pipe body 7, which facilitates the transmission of flue gas to the interior of the secondary pot body 2 and the main pot body 1 through the pump pipe body 7. After two transmissions, the heat in the flue gas can be fully recovered and utilized. At the same time, the mounting cover 6 is connected to the secondary pot body 2 and the main pot body 1 through the flue gas inlet pipe 4 and the flue gas outlet pipe 5 respectively to form a disassembly structure, which facilitates installation and replacement, and facilitates ash cleaning.

[0030] Combination Figure 2 , Figure 3 and Figure 4As shown, the lower end of the connecting pipe 9 is connected to the conveying pipe 11, which has a spiral structure. Both the connecting pipe 9 and the conveying pipe 11 are installed inside the main pot body 1. The upper and lower ends of the conveying pipe 11 are connected to the connecting pipe 9 and the exhaust pipe body 8 respectively by screwing. The outer surface of the connecting pipe 9 is connected to the connecting pipe 10 at equal angles. The connecting pipe 10 passes through the secondary pot body 2 and is connected to the flue gas treatment pipe 14. The connection between the connecting pipe 10 and the flue gas treatment pipe 14 has a hollow structure. The inner wall of the flue gas treatment pipe 14 is inclined with activated carbon adsorption plates 13. Furthermore, the activated carbon adsorption plates 13 are arranged in a crisscross pattern inside the flue gas treatment pipe 14. As the flue gas passes through the flue gas treatment pipe 14, the activated carbon adsorption plates 13 facilitate the adsorption of some dust. At the same time, the filter screen at the connecting pipe 10 performs dust removal treatment again. The flue gas then flows through the conveying pipe 11 inside the main pot body 1, improving the emission path in the main pot body 1 and increasing the heat absorption rate of the flue gas by the main pot body 1 and the secondary pot body 2. It also facilitates the collection of dust inside the flue gas treatment pipe 14 in the secondary pot body 2 for easy collection and cleaning.

[0031] Combination Figure 2 As shown, both the pump pipe body 7 and the exhaust pipe body 8 have an "L"-shaped structure. The right end flange of the exhaust pipe body 8 is connected to the exhaust port 12, which has a hollow spherical structure. The left end of the pump pipe body 7 is connected to the waste incinerator through a flange, which facilitates the transmission of flue gas through the pump pipe body 7 to the flue gas treatment pipe 14 and the transmission pipe 11 in sequence. Finally, the flue gas is discharged from the exhaust port 12 through the exhaust pipe body 8, which facilitates the filtration of dust in the flue gas and helps protect the environment. At the same time, the main boiler body 1 and the secondary boiler body 2 process the absorbed heat into steam and transmit it to the steam turbine through the steam transmission port 3 for power generation. This is the working process of the stable steam production system for waste incineration power generation.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stable steam production system for waste incineration power generation, comprising a main pot body (1), wherein a secondary pot body (2) is integrally connected to the outer surface of the main pot body (1), and a steam transmission port (3) is integrally connected to the upper end of the main pot body (1). Mounting cover (6) is installed and connected to the lower end of the main pot body (1), and the lower left and right sides of the mounting cover (6) are respectively connected to the air pump pipe body (7) and the exhaust pipe body (8). Its features are, Also includes: The flue gas treatment pipe (14) is installed inside the secondary pot body (2), and the lower end of the flue gas treatment pipe (14) passes through the lower end of the secondary pot body (2) and is connected to the connector (15). The upper end of the conveying pipe (11) is connected to the connecting pipe (9), and the lower end of the conveying pipe (11) passes through the flue gas outlet pipe (5) and is connected to the exhaust pipe body (8). The flue gas outlet pipe (5) is flanged to the main pot body (1).

2. The waste incineration power generation steam production stabilization system according to claim 1, characterized in that, The secondary pot body (2) is set at an equal angle on the outer surface of the main pot body (1), and the main pot body (1) and the secondary pot body (2) are connected. The main pot body (1), the secondary pot body (2) and the steam transmission port (3) are connected.

3. The waste incineration power generation steam production stabilization system according to claim 2, characterized in that, The secondary pot body (2) and the flue gas treatment pipe (14) are both cylindrical structures, and the central axis of the secondary pot body (2) and the flue gas treatment pipe (14) are the same straight line. The flue gas treatment pipe (14) is connected to the flange of the flue gas inlet pipe (4) through the connector (15), and the lower end of the flue gas inlet pipe (4) is connected to the pump pipe body (7).

4. The waste incineration power generation steam production stabilization system according to claim 1, characterized in that, The lower end of the connecting pipe (9) is connected to the conveying pipe (11) which has a spiral structure. Both the connecting pipe (9) and the conveying pipe (11) are installed inside the main pot body (1). The upper and lower ends of the conveying pipe (11) are connected to the connecting pipe (9) and the exhaust pipe body (8) respectively by screwing.

5. The waste incineration power generation steam production stabilization system according to claim 1, characterized in that, The outer surface of the connecting pipe (9) is provided with a connecting pipe (10) at equal angles, and the connecting pipe (10) passes through the secondary pot body (2) and is connected to the flue gas treatment pipe (14).

6. A stable steam production system for waste incineration power generation according to claim 5, characterized in that, The connection between the connecting pipe (10) and the flue gas treatment pipe (14) is hollow, and the inner wall of the flue gas treatment pipe (14) is inclined with activated carbon adsorption plates (13), and the activated carbon adsorption plates (13) are arranged in a crisscross pattern inside the flue gas treatment pipe (14).

7. The waste incineration power generation steam production stabilization system according to claim 1, characterized in that, Both the pump pipe body (7) and the exhaust pipe body (8) are L-shaped structures, and the right end flange of the exhaust pipe body (8) is connected to an exhaust port (12), and the exhaust port (12) is a hollow spherical structure.

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