Waste liquid incineration waste heat recovery device

Abstract

The utility model provides a kind of waste liquid incineration waste heat recovery device, it is related to waste liquid incineration waste heat recovery equipment field, including waste heat recovery assembly, including furnace body, the heat exchanger for providing heating space in waste heat recovery assembly inner chamber, the first hopper for collecting flue dust in the furnace body bottom, and the first discharge valve for dust removal installed in the first hopper bottom, flue dust separation component, including cylinder, conical cylinder fixed in cylinder bottom, second hopper fixed in conical cylinder bottom;The utility model separates the flue dust in flue gas by the principle of cyclone separation using flue dust separation component, and the dust content of flue gas after being treated by flue dust separation component greatly reduces, thereby reduce the amount of flue dust adhered to the surface of heat exchanger in waste heat recovery component, by ash removal component can regularly ash removal furnace inner chamber, so that the heat exchange efficiency of heat exchanger can be prevented from accumulating in equipment internal flue dust, maintains.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery equipment for waste liquid incineration, specifically a waste heat recovery device for waste liquid incineration. Background Technology

[0002] Waste liquid incineration is an effective treatment method that decomposes harmful substances in waste liquid at high temperatures, converting them into harmless substances such as carbon dioxide and water. Using high-temperature combustion technology to treat waste liquid has the advantages of high efficiency, environmental protection, and safety, and is widely used in industries such as chemical, pharmaceutical, and petroleum. The heat energy generated during the incineration process can also be recovered and reused. By recovering the waste heat, it can be converted into usable energy forms such as hot water, steam, or electricity, thereby realizing the reuse of resources.

[0003] Waste heat hot water boilers are common waste heat recovery devices, consisting of a furnace body, heat exchangers, etc. The heat exchangers are usually composed of a series of pipes. Water flows inside the pipes, and flue gas flows outside the pipes. The waste heat of the flue gas is used to heat the water flowing inside the pipes, raising its temperature and thus producing hot water, thereby realizing the recovery and utilization of waste heat.

[0004] However, the flue gas produced after waste liquid incineration usually contains a high amount of dust. This dust will adhere to the pipes on the surface of the heat exchanger in the waste heat boiler. The accumulation of a large amount of dust can easily reduce the heat conduction effect of the heat exchanger, thereby affecting the heating efficiency of hot water.

[0005] In summary, this utility model provides a waste heat recovery device for waste liquid incineration to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A waste heat recovery device for waste liquid incineration includes a waste heat recovery component comprising a furnace body, a heat exchanger installed in the inner cavity of the waste heat recovery component for providing heating space, a first hopper located at the bottom of the furnace body for collecting dust, and a first discharge valve installed at the bottom of the first hopper for discharging dust; a dust separation component comprising a cylinder, a conical cylinder fixed to the bottom of the cylinder, a second hopper fixed to the bottom of the conical cylinder, a fan fixed to the top of the cylinder, a central pipe located in the inner cavity of the cylinder, a spiral exhaust pipe communicating with the inner cavity of the furnace body, a spiral air inlet pipe communicating with the flue gas inlet of the cylinder and the flue gas outlet of the waste liquid incinerator, and a second discharge valve installed at the bottom of the second hopper for discharging dust; and a ash removal component comprising an air storage tank for storing compressed air, a diverter pipe for diverting compressed air, a pulse solenoid valve for controlling gas flow, an ash blowing pipe and an ash blowing nozzle installed at the upper end of the inner cavity of the furnace body for ash blowing, and a connecting pipe for conveying gas.

[0008] Furthermore, in this utility model, the waste heat recovery assembly also includes an inlet pipe for cold water inlet and an outlet pipe for hot water outlet, both of which are located outside the furnace body, and the heat exchanger is fixed to the inner cavity of the furnace body.

[0009] Furthermore, in this utility model, one end of the water inlet pipe extends through the inner cavity of the furnace body and is connected to the water inlet of the heat exchanger, and one end of the water outlet pipe extends through the inner cavity of the furnace body and is connected to the water outlet of the heat exchanger.

[0010] Furthermore, in this utility model, the bottom of the furnace body is also fixedly connected with support legs, the first hopper is connected to the inner cavity of the furnace body, the smoke outlet of the furnace body is connected to a smoke exhaust pipe, and the end of the smoke exhaust pipe away from the furnace body is connected to an external flue gas spray tower.

[0011] Furthermore, in this utility model, the spiral exhaust pipe is connected to the outlet of the fan, one end of the central pipe is connected to the air inlet of the fan, and the other end of the central pipe is connected to the inner cavity of the cylinder.

[0012] Furthermore, in this utility model, the inner cavities of the cylindrical and conical cylinders are connected, the inner cavity of the conical cylinder is connected, the second hopper is connected to the second discharge valve, and a support for providing support is fixed on the surface of the cylindrical cylinder.

[0013] Furthermore, in this utility model, the gas storage tank is fixed to the top of the furnace body, the gas inlet of the gas storage tank is connected to an external compressor through a pipe, the diverter pipe and the pulse solenoid valve are both fixed to the front of the furnace body, the diverter pipe is connected to the pulse solenoid valve, the soot blowing pipe is fixed to the bottom of the furnace body cavity, the soot blowing nozzle is connected to the soot blowing pipe, one end of the soot blowing pipe extends to the outside of the furnace body and is connected to the pulse solenoid valve, one end of the connecting pipe is connected to the gas outlet of the gas storage tank, and the other end is connected to the diverter pipe.

[0014] Beneficial effects: This utility model has the following beneficial effects:

[0015] This invention provides space for heating through a heat exchanger in a waste heat recovery component. Cold water is introduced through an inlet pipe, and after absorbing the heat generated by the incineration of waste liquid in the heat exchanger, hot water flows out from the outlet pipe. This achieves effective recovery of waste heat from waste liquid incineration, converting heat energy that would otherwise be wasted into usable hot water, improving energy utilization and reducing energy consumption.

[0016] This invention utilizes a dust separation component to separate dust from flue gas using the principle of cyclone separation. The dust content of the flue gas is greatly reduced after treatment by the dust separation component, thereby reducing the amount of dust adhering to the surface of the heat exchanger in the waste heat recovery component. The ash removal component can periodically clean the furnace cavity. The air storage tank stores compressed air, which is delivered to the soot blowing pipe and soot blowing nozzle through the diverter pipe, pulse solenoid valve and connecting pipe to blow soot onto the heat exchanger and other components in the furnace, thereby preventing dust from accumulating inside the equipment and maintaining the heat exchange efficiency of the heat exchanger. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the connection state structure of the dust separation component of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the furnace body of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection state structure of the dust removal component of this utility model.

[0021] In the picture:

[0022] 100. Waste heat recovery assembly; 110. Furnace body; 120. Heat exchanger; 130. First hopper; 140. Water inlet pipe; 150. Water outlet pipe; 160. First discharge valve; 170. Exhaust pipe; 180. Support leg; 200. Dust separation assembly; 210. Cylindrical cylinder; 220. Conical cylinder; 230. Second hopper; 240. Fan; 250. Central pipe; 260. Spiral exhaust pipe; 270. Spiral air inlet pipe; 280. Second discharge valve; 290. Support; 300. Ash removal assembly; 310. Air storage tank; 320. Diverter pipe; 330. Pulse solenoid valve; 340. Soot blowing pipe; 350. Soot blowing nozzle; 360. Connecting pipe. Detailed Implementation

[0023] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0024] Example 1

[0025] like Figure 1-4 The image shows the first embodiment of this utility model, which provides a waste heat recovery device for waste liquid incineration. The device includes a waste heat recovery assembly 100, comprising a furnace body 110, a heat exchanger 120 installed in the inner cavity of the waste heat recovery assembly 100 to provide heating space, a first hopper 130 located at the bottom of the furnace body 110 for collecting flue gas, and a first discharge valve 160 installed at the bottom of the first hopper 130 for discharging dust. A flue gas separation assembly 200 includes a cylinder 210, a conical cylinder 220 fixed to the bottom of the cylinder 210, a second hopper 230 fixed to the bottom of the conical cylinder 220, and a fan fixed to the top of the cylinder 210. 240, a central pipe 250 located in the inner cavity of the cylinder 210, a spiral exhaust pipe 260 communicating with the inner cavity of the furnace body 110, a spiral air inlet pipe 270 communicating with the flue gas inlet of the cylinder 210 and the flue gas outlet of the waste liquid incinerator, and a second discharge valve 280 installed at the bottom of the second hopper 230 for dust removal, and a dust removal assembly 300, including an air storage tank 310 for storing compressed air, a diversion pipe 320 for diverting compressed air, a pulse solenoid valve 330 for controlling gas flow, a dust blowing pipe 340 and a dust blowing nozzle 350 installed at the upper end of the inner cavity of the furnace body 110 for dust blowing, and a connecting pipe 360 ​​for conveying gas.

[0026] like Figure 1-4 As shown, the dust separation component 200 is designed to further treat the dust-laden flue gas. The spiral inlet pipe 270 introduces the dust-laden flue gas from the waste liquid incinerator outlet into the cylinder 210. Under the action of the fan 240, the flue gas forms a spiral airflow in the cylinder 210 and the conical cylinder 220. Utilizing the principle of centrifugal force, the dust is thrown against the cylinder wall and falls down the cylinder wall to the second hopper 230, and is discharged through the second discharge valve 280. The dust content of the flue gas after being treated by the dust separation component 200 is greatly reduced, thereby reducing the amount of dust adhering to the surface of the heat exchanger 120 in the waste heat recovery component 100 and improving the heat conduction effect of the heat exchanger 120.

[0027] The air storage tank 310 stores compressed air and delivers it to the distribution pipe 320 through the connecting pipe 360. The pulse solenoid valve 330 controls the flow and pulse injection of the compressed air. The soot blowing pipe 340 and the soot blowing nozzle 350 are installed at the upper end of the inner cavity of the furnace body 110. When the pulse solenoid valve 330 is opened, the compressed air is ejected at high speed from the soot blowing nozzle 350 to purge the pipes on the surface of the heat exchanger 120, blowing off the attached soot and dust, which falls into the first hopper 130 and is then discharged through the first discharge valve 160. This allows for timely removal of soot and dust from the surface of the heat exchanger 120, ensuring the thermal conductivity of the heat exchanger 120 and thus improving the heating efficiency of the hot water.

[0028] Example 2

[0029] Reference Figure 1 and 3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0030] In this embodiment, the waste heat recovery assembly 100 also includes an inlet pipe 140 for cold water inlet and an outlet pipe 150 for hot water outlet. Both the inlet pipe 140 and the outlet pipe 150 are located outside the furnace body 110, and the heat exchanger 120 is fixed to the inner cavity of the furnace body 110.

[0031] One end of the water inlet pipe 140 extends into the inner cavity of the furnace body 110 and is connected to the water inlet of the heat exchanger 120. One end of the water outlet pipe 150 extends into the inner cavity of the furnace body 110 and is connected to the water outlet of the heat exchanger 120.

[0032] Support legs 180 are fixedly connected around the bottom of the furnace body 110. The first hopper 130 is connected to the inner cavity of the furnace body 110. The smoke outlet of the furnace body 110 is connected to the exhaust pipe 170, and the end of the exhaust pipe 170 away from the furnace body 110 is connected to the external flue gas spray tower.

[0033] like Figure 1 and 3 As shown, in the waste heat recovery assembly 100, the furnace body 110 provides a relatively enclosed space for the entire waste heat recovery process. The heat exchanger 120 is installed in the inner cavity of the furnace body 110 and is composed of multiple sets of U-shaped tubes connected together, thereby increasing the heating area of ​​the water. The inlet pipe 140 and the outlet pipe 150 are connected to the inlet and outlet of the heat exchanger 120, respectively, so that cold water can enter the heat exchanger 120 to absorb the waste heat of the flue gas and turn it into hot water. The first hopper 130 is located at the bottom of the furnace body 110 and can collect a portion of the dust that settles with the flue gas and then discharge it through the first discharge valve 160, reducing the dust content in the furnace body 110. The flue gas outlet of the furnace body 110 is transported to the external flue gas spray tower for further treatment through the exhaust pipe 170.

[0034] Example 3

[0035] Reference Figure 1-4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0036] In this embodiment, the spiral exhaust pipe 260 is connected to the outlet of the fan 240, one end of the central pipe 250 is connected to the air inlet of the fan 240, and the other end of the central pipe 250 is connected to the inner cavity of the cylinder 210.

[0037] The inner cavity of the cylindrical cylinder 210 is connected to the inner cavity of the conical cylinder 220, the inner cavity of the conical cylinder 220 is connected to the inner cavity of the second hopper 230, the second hopper 230 is connected to the second discharge valve 280, and a support 290 for providing support is fixed on the surface of the cylindrical cylinder 210.

[0038] The gas storage tank 310 is fixed to the top of the furnace body 110. The air inlet of the gas storage tank 310 is connected to an external compressor through a pipe. The diverter pipe 320 and the pulse solenoid valve 330 are both fixed to the front of the furnace body 110. The diverter pipe 320 is connected to the pulse solenoid valve 330. The soot blowing pipe 340 is fixed to the bottom of the inner cavity of the furnace body 110. The soot blowing nozzle 350 is connected to the soot blowing pipe 340. One end of the soot blowing pipe 340 extends to the outside of the furnace body 110 and is connected to the pulse solenoid valve 330. One end of the connecting pipe 360 ​​is connected to the air outlet of the gas storage tank 310, and the other end is connected to the diverter pipe 320.

[0039] like Figure 1-4 As shown, the dust separation component 200 uses the principle of cyclone separation to separate dust from flue gas. The spiral inlet pipe 270 introduces the dust-laden flue gas generated by the waste liquid incinerator into the cylinder 210, forming a rotating airflow inside the cylinder 210. Under the action of centrifugal force, the dust is thrown towards the inner wall of the cylinder 210, and then falls into the second hopper 230 along the cone cylinder 220. Finally, it is discharged through the second discharge valve 280. The relatively clean flue gas after separation is drawn out by the blower 240 through the central pipe 250, and then enters the furnace body 110 through the spiral exhaust pipe 260.

[0040] The dust removal assembly 300 actively cleans the soot adhering to the surface of the heat exchanger 120. The air storage tank 310 stores compressed air and delivers it to the distribution pipe 320 through the connecting pipe 360. The pulse solenoid valve 330 controls the pulsed release of the compressed air. The soot blowing pipe 340 and the soot blowing nozzle 350 are installed at the upper end of the inner cavity of the furnace body 110. When the pulse solenoid valve 330 is opened, the compressed air blows soot off the surface of the heat exchanger 120 through the soot blowing pipe 340 and the soot blowing nozzle 350, causing the adhering soot to fall into the first hopper 130, thereby ensuring the heat conduction effect of the heat exchanger 120 and improving the heating efficiency of the hot water.

[0041] During use, the high-temperature flue gas generated by waste liquid incineration enters the furnace body 110. The heat exchanger 120 inside the furnace body 110 provides space for heating. Cold water enters from the inlet pipe 140. One end of the inlet pipe 140 passes through the furnace body 110 and is connected to the inlet of the heat exchanger 120. The high-temperature flue gas exchanges heat with the cold water in the heat exchanger 120, heating the cold water. The heated hot water flows out from the outlet pipe 150. One end of the outlet pipe 150 passes through the furnace body 110 and is connected to the outlet of the heat exchanger 120, realizing the recovery and utilization of waste heat. During this process, some of the dust in the high-temperature flue gas will settle into the first hopper 130 at the bottom of the furnace body 110. The first hopper 130 is connected to the inner cavity of the furnace body 110. The collected dust can be discharged through the first discharge valve 160. The exhaust pipe 170 at the flue gas outlet of the furnace body 110 transports the treated flue gas to the external flue gas spray tower for further treatment.

[0042] The flue gas generated by the waste liquid incinerator enters the cylinder 210 through the spiral inlet pipe 270. The spiral inlet pipe 270 is connected to the flue gas inlet of the cylinder 210 and the flue gas outlet of the waste liquid incinerator. The blower 240 is fixed at the top of the cylinder 210. After the blower 240 is started, the flue gas forms a rotating airflow in the cylinder 210. Due to the centrifugal force, the dust is thrown towards the inner wall of the cylinder 210 and slides down the inner wall to the cone 220, and then enters the second hopper 230. The inner cavities of the cylinder 210, the cone 220 and the second hopper 230 are connected in sequence. The collected dust can be discharged through the second discharge valve 280. The relatively clean flue gas after separation is drawn out by the blower 240 through the central pipe 250 and then enters the furnace body 110 for heating through the spiral exhaust pipe 260.

[0043] When ash removal is required, the pulse solenoid valve 330 is opened, and compressed air is delivered to the ash blowing nozzle 350 through the ash blowing pipe 340. The ash blowing pipe 340 is fixed at the bottom of the inner cavity of the furnace body 110. The ash blowing nozzle 350 is connected to the ash blowing pipe 340. One end of the ash blowing pipe 340 passes through the outside of the furnace body 110 and is connected to the pulse solenoid valve 330. Compressed air is sprayed out from the ash blowing nozzle 350 to blow ash off the heat exchanger 120 and other components inside the furnace body 110 to prevent the accumulation of soot from affecting the heat exchange efficiency.

[0044] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A waste heat recovery device for waste liquid incineration, characterized in that: include, The waste heat recovery assembly (100) includes a furnace body (110), a heat exchanger (120) installed in the inner cavity of the waste heat recovery assembly (100) for providing a heating space, a first hopper (130) located at the bottom of the furnace body (110) for collecting dust, and a first discharge valve (160) installed at the bottom of the first hopper (130) for discharging dust. The dust separation assembly (200) includes a cylinder (210), a conical cylinder (220) fixed to the bottom of the cylinder (210), a second hopper (230) fixed to the bottom of the conical cylinder (220), a fan (240) fixed to the top of the cylinder (210), a central pipe (250) located in the inner cavity of the cylinder (210), a spiral exhaust pipe (260) communicating with the inner cavity of the furnace body (110), a spiral air inlet pipe (270) communicating with the smoke inlet of the cylinder (210) and the smoke outlet of the waste liquid incinerator, and a second discharge valve (280) installed at the bottom of the second hopper (230) for dust discharge; The ash removal assembly (300) includes an air tank (310) for storing compressed air, a splitter pipe (320) for splitting compressed air, a pulse solenoid valve (330) for controlling gas flow, an ash blowing pipe (340) and an ash blowing nozzle (350) installed at the upper end of the inner cavity of the furnace body (110) for ash blowing, and a connecting pipe (360) for conveying gas.

2. The waste heat recovery device for waste liquid incineration as described in claim 1, characterized in that: The waste heat recovery assembly (100) also includes an inlet pipe (140) for cold water inlet and an outlet pipe (150) for hot water outlet. The inlet pipe (140) and the outlet pipe (150) are both located outside the furnace body (110), and the heat exchanger (120) is fixed to the inner cavity of the furnace body (110).

3. The waste heat recovery device for waste liquid incineration as described in claim 2, characterized in that: One end of the water inlet pipe (140) extends into the inner cavity of the furnace body (110) and is connected to the water inlet of the heat exchanger (120). One end of the water outlet pipe (150) extends into the inner cavity of the furnace body (110) and is connected to the water outlet of the heat exchanger (120).

4. The waste heat recovery device for waste liquid incineration as described in claim 1, characterized in that: Support legs (180) are fixedly connected around the bottom of the furnace body (110). The first hopper (130) is connected to the inner cavity of the furnace body (110). The smoke outlet of the furnace body (110) is connected to a smoke exhaust pipe (170), and the end of the smoke exhaust pipe (170) away from the furnace body (110) is connected to an external flue gas spray tower.

5. The waste heat recovery device for waste liquid incineration as described in claim 1, characterized in that: The spiral exhaust pipe (260) is connected to the outlet of the fan (240), one end of the central pipe (250) is connected to the air inlet of the fan (240), and the other end of the central pipe (250) is connected to the inner cavity of the cylinder (210).

6. The waste heat recovery device for waste liquid incineration as described in claim 1, characterized in that: The inner cavity of the cylindrical tube (210) is connected to the inner cavity of the conical tube (220), the inner cavity of the conical tube (220) is connected to the inner cavity of the second hopper (230), the second hopper (230) is connected to the second discharge valve (280), and a bracket (290) for providing support is fixed on the surface of the cylindrical tube (210).

7. The waste heat recovery device for waste liquid incineration as described in claim 1, characterized in that: The gas storage tank (310) is fixed to the top of the furnace body (110). The gas inlet of the gas storage tank (310) is connected to an external compressor through a pipe. The diverter pipe (320) and the pulse solenoid valve (330) are both fixed to the front of the furnace body (110). The diverter pipe (320) is connected to the pulse solenoid valve (330). The soot blowing pipe (340) is fixed to the bottom of the inner cavity of the furnace body (110). The soot blowing nozzle (350) is connected to the soot blowing pipe (340). One end of the soot blowing pipe (340) extends to the outside of the furnace body (110) and is connected to the pulse solenoid valve (330). One end of the connecting pipe (360) is connected to the gas outlet of the gas storage tank (310), and the other end is connected to the diverter pipe (320).

Images