Hazardous waste incineration waste heat gradient utilization device

Abstract

The invention discloses a hazardous waste incineration waste heat gradient utilization device, and particularly relates to the technical field of hazardous waste treatment, the hazardous waste incineration waste heat gradient utilization device comprises a base, an incinerator main body is arranged at the top of the base, a waste heat utilization mechanism is arranged at the top of the incinerator main body, and the waste heat utilization mechanism comprises a heat exchange box arranged at the top of the incinerator main body. By arranging the waste heat utilization mechanism, the incinerator body can indirectly heat the heat exchange box in the incineration process, meanwhile, heat exchange is conducted through a heat exchange pipe, a circulating water pump is started, water in an energy storage tank is extracted and injected into the heat exchange pipe through a water inlet pipe, and heat exchange is conducted through the heat exchange pipe; the energy storage tank is arranged in the heat exchange pipe, heated water in the heat exchange pipe is guided into the energy storage tank through the drainage pipe for energy storage, heat contained in smoke is recycled, and meanwhile the waste heat recycling effect can be effectively ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of hazardous waste treatment, and in particular relates to a device for cascade utilization of waste heat from hazardous waste incineration. Background Art

[0002] With the development of industry, the amount of hazardous waste discharged in industrial production processes is increasing. Hazardous wastes with one or more hazardous characteristics such as corrosiveness, toxicity, flammability, reactivity or infectivity bring serious pollution and potential serious impacts. They are generally put into the incinerator after being formulated, mixed, stored, filtered and pumped.

[0003] In the waste incineration disposal system, the recovery and utilization of flue gas heat is also very important. In order to maximize the utilization of flue gas heat, it is difficult to effectively recycle the heat contained in the flue gas in multiple stages during the heat recovery of high-temperature flue gas, resulting in high-temperature heat still remaining in the discharged flue gas, thus affecting the waste heat recovery effect. Summary of the invention

[0004] The present invention provides a cascade utilization device for waste heat from hazardous waste incineration, aiming to solve the above-mentioned problem that it is difficult to effectively recover and utilize the heat contained in the flue gas in multiple stages, resulting in high-temperature heat still remaining in the discharged flue gas, thus affecting the waste heat recovery effect.

[0005] The present invention is implemented in this way. The present invention provides the following technical solutions: a hazardous waste incineration waste heat cascade utilization device, comprising a base, an incinerator body is arranged on the top of the base, and a waste heat utilization mechanism is arranged on the top of the incinerator body;

[0006] The waste heat utilization mechanism comprises a heat exchange box arranged on the top of the incinerator body, wherein a plurality of heat exchange tubes are arranged inside the heat exchange box, a first flow guide tube is arranged at one end of each of the plurality of heat exchange tubes, a second flow guide tube is arranged at the other end of each of the plurality of heat exchange tubes, and the plurality of heat exchange tubes are connected through the first flow guide tube and the second flow guide tube;

[0007] The surfaces of the plurality of heat exchange tubes are all sleeved with sealing sleeves, and the plurality of sealing sleeves are connected through a connecting pipe;

[0008] A water inlet pipe for diversion is arranged at one end of the heat exchange tube, a drainage pipe for circulation is arranged at the other end of the heat exchange tube, a circulating water pump is arranged at the bottom of the water inlet pipe, and an energy storage tank is arranged at the bottom of the drainage pipe.

[0009] In a preferred embodiment, the energy storage tank and the circulating water pump are connected through a water pipe, and an energy drain pipe connected to the energy storage tank is provided on the top of the energy storage tank.

[0010] In a preferred embodiment, a smoke inlet pipe connected to the sealing sleeve is disposed at one end of the bottom surface of the sealing sleeve, and a smoke guide pipe connected to the incinerator body and used for guiding the smoke is disposed at the bottom of the smoke inlet pipe.

[0011] In a preferred embodiment, a smoke exhaust pipe connected to the sealing sleeve is provided at one end of the sealing sleeve located on the top surface of the heat exchange box, and a purifier for purifying smoke is provided on the top of the smoke exhaust pipe.

[0012] In a preferred embodiment, the heat exchange box is communicated with the inner cavity of the incinerator body, and a plurality of reinforcing cross bars are provided at the bottom of the heat exchange box, which are respectively fixedly connected to the inner wall of the incinerator body and used to support the heat exchange box.

[0013] In a preferred embodiment, the base, the heat exchange box, the sealing sleeve, the heat exchange tube, the first flow guide tube and the second flow guide tube are all made of stainless steel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting up a waste heat utilization mechanism, compared with the prior art, the incinerator body will indirectly heat the heat exchange box during the incineration process, and at the same time, the heat exchange tube will exchange heat, and the circulating water pump will be started to extract the water in the energy storage tank and inject it into the heat exchange tube through the water inlet pipe, so that the heated water in the heat exchange tube is introduced into the energy storage tank through the drain pipe for energy storage, so that the heat contained in the flue gas can be recycled and utilized, and at the same time, the waste heat recovery effect can be effectively ensured;

[0016] 2. By setting up a sealing sleeve, a smoke inlet pipe, a smoke exhaust pipe, a smoke guide pipe and a purifier, and through the mutual use of the smoke inlet pipe and the smoke guide pipe, the high-temperature flue gas generated when the incinerator body is burned will be introduced into the sealing sleeve through the smoke guide pipe, and the heat exchange tube will be heated at multiple levels to increase the heat exchange efficiency of the heat exchange tube. Finally, the flue gas will be introduced into the purifier through the smoke exhaust pipe for filtration and purification before being discharged. It can not only effectively recycle the waste heat, but also reduce the degree of environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is the front view of the waste heat utilization mechanism of the present invention.

[0019] Figure 3 It is a front view of the first flow guide tube, the second flow guide tube and the sealing sleeve of the present invention.

[0020] Figure 4This is a front view of the heat exchange tube and the sealing sleeve when they are separated.

[0021] In the figure: 1. base; 2. incinerator body; 3. heat exchange box; 4. heat exchange tube; 5. first guide tube; 6. second guide tube; 7. sealing sleeve; 8. connecting pipe; 9. water inlet pipe; 10. drain pipe; 11. circulating water pump; 12. energy storage tank; 13. water pipe; 14. energy discharge pipe; 15. smoke inlet pipe; 16. smoke exhaust pipe; 17. smoke guide pipe; 18. purifier. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] As attached Figure 1-4 A hazardous waste incineration waste heat cascade utilization device is shown, comprising a base 1, an incinerator body 2 is arranged on the top of the base 1, and a waste heat utilization mechanism is arranged on the top of the incinerator body 2;

[0025] The waste heat utilization mechanism includes a heat exchange box 3 arranged on the top of the incinerator body 2, and a plurality of heat exchange tubes 4 are arranged inside the heat exchange box 3. A first flow guide tube 5 is arranged at one end of each of the plurality of heat exchange tubes 4, and a second flow guide tube 6 is arranged at the other end of the heat exchange tube 4. The plurality of heat exchange tubes 4 are connected through the first flow guide tube 5 and the second flow guide tube 6.

[0026] The surfaces of the multiple heat exchange tubes 4 are all sleeved with sealing sleeves 7, and the multiple sealing sleeves 7 are connected through connecting pipes 8;

[0027] A water inlet pipe 9 for diversion is provided at one end of the heat exchange tube 4 , a drainage pipe 10 for circulation is provided at the other end of the heat exchange tube 4 , a circulating water pump 11 is provided at the bottom of the water inlet pipe 9 , and an energy storage tank 12 is provided at the bottom of the drainage pipe 10 .

[0028] See attached Figure 1 , 2As shown, the energy storage tank 12 and the circulating water pump 11 are connected through a water pipe 13. A drain pipe 14 connected to the energy storage tank 12 is arranged on the top of the energy storage tank 12. The drain pipe 14 is convenient for discharging the heat energy recovered in the energy storage tank 12. At the same time, the setting of the water pipe 13 facilitates the water entering the energy storage tank 12 to be introduced into the drain pipe 10 through the water pipe 13 and injected into the heat exchange tube 4 through the water inlet pipe 9 for water circulation.

[0029] See attached Figure 1 , 2 As shown in Figures 3 and 4, a smoke inlet pipe 15 connected to the sealing sleeve 7 is provided at one end of the bottom surface of the sealing sleeve 7, and a smoke guide pipe 17 connected to the incinerator body 2 and used for guiding the smoke is provided at the bottom of the smoke inlet pipe 15. The smoke inlet pipe 15 and the smoke guide pipe 17 are used in coordination with each other, so that the high-temperature smoke generated by the incinerator body 2 during the incineration can be introduced into the smoke inlet pipe 15 through the smoke guide pipe 17, and then introduced into the sealing sleeve 7 to heat the heat exchange tube 4, thereby increasing the heating efficiency of the heat exchange tube 4.

[0030] See attached Figure 1 , 2 As shown in Figures 3 and 4, a smoke exhaust pipe 16 connected to the sealing sleeve 7 is arranged at one end of the sealing sleeve 7 located on the top surface of the heat exchange box 3, and a purifier 18 for purifying the flue gas is arranged on the top of the smoke exhaust pipe 16. The setting of the smoke exhaust pipe 16 facilitates the exhaust of the flue gas introduced into the sealing sleeve 7 through the smoke exhaust pipe 16, and at the same time purifies the flue gas through the purifier 18 to reduce the degree of environmental pollution.

[0031] See attached Figure 1 As shown, the heat exchange box 3 is connected with the inner cavity of the incinerator body 2, and a plurality of reinforcing cross bars are provided at the bottom of the heat exchange box 3, which are respectively fixedly connected with the inner wall of the incinerator body 2 and used to support the heat exchange box 3. The heat exchange box 3 is connected with the inner cavity of the incinerator body 2, so that the incinerator body 2 can incinerate the waste while indirectly heating the heat exchange box 3, thereby increasing the recovery efficiency of the incineration heat. At the same time, the arrangement of the reinforcing cross bars increases the stability of the heat exchange box 3 installed on the top of the incinerator body 2, which is convenient for use.

[0032] See attached Figure 1 , 2 As shown in , 3 and 4, the base 1, the heat exchange box 3, the sealing sleeve 7, the heat exchange tube 4, the first guide tube 5 and the second guide tube 6 are all made of stainless steel. The stainless steel has good hardness, is not easy to deform, and can effectively extend the service life of the mechanism.

[0033] Working principle of the present invention: First, the staff installs the device made by the present invention at a designated position. When in use, the waste is incinerated through the incinerator body 2, and the incinerator body 2 will indirectly heat the heat exchange box 3 during the incineration process, and at the same time heat the heat exchange tube 4 for heat exchange, and the circulating water pump 11 is started to extract water in the energy storage tank 12 and inject it into the heat exchange tube 4 through the water inlet pipe 9, so that the heated water in the heat exchange tube 4 is introduced into the energy storage tank 12 through the drain pipe 10 for energy storage;

[0034] At the same time, through the cooperation of the smoke inlet pipe 15 and the smoke guide pipe 17, the high-temperature smoke generated by the incinerator body 2 during incineration will be introduced into the sealing sleeve 7 through the smoke guide pipe 17, and the heat exchange tube 4 will be heated at multiple levels to increase the efficiency of the heat exchange tube 4 during heating. Finally, the smoke will be introduced into the purifier 18 through the smoke exhaust pipe 16 for filtration and purification before being discharged.

[0035] At the same time, the maximum water vapor pressure can be assumed to be 10P, and the equipment that needs to use water vapor can be arranged in a step-by-step manner, with steam demand from large to small. Assuming that there are equipment with demands of 8P, 5P, and 2P, the 10P water vapor first passes through a group of turbine expanders for a round of pressure reduction. When it reaches 8P, it passes through a tee, one way to the 8P equipment and one way to the next group of turbine expanders. The 8P water vapor passes through the next group of turbine expanders for a round of pressure reduction. When it reaches 5P, it passes through a tee, one way to the 5P equipment and one way to the next group of turbine expanders. The 5P water vapor passes through the next group of turbine expanders for a round of pressure reduction. When it reaches 2P, it passes through a tee, one way to the 2P equipment and one way to the next group of turbine expanders. Finally, it is connected to the water pipe 13 through a hose for water circulation.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cascade utilization device for waste heat from hazardous waste incineration, comprising a base, characterized in that: An incinerator body is arranged on the top of the base, and a waste heat utilization mechanism is arranged on the top of the incinerator body; The waste heat utilization mechanism comprises a heat exchange box arranged on the top of the incinerator body, wherein a plurality of heat exchange tubes are arranged inside the heat exchange box, a first flow guide tube is arranged at one end of each of the plurality of heat exchange tubes, a second flow guide tube is arranged at the other end of each of the plurality of heat exchange tubes, and the plurality of heat exchange tubes are connected through the first flow guide tube and the second flow guide tube; The surfaces of the plurality of heat exchange tubes are all sleeved with sealing sleeves, and the plurality of sealing sleeves are connected through a connecting pipe; A water inlet pipe for diversion is arranged at one end of the heat exchange tube, a drainage pipe for circulation is arranged at the other end of the heat exchange tube, a circulating water pump is arranged at the bottom of the water inlet pipe, and an energy storage tank is arranged at the bottom of the drainage pipe.

2. The device for cascade utilization of waste heat from incineration of hazardous waste according to claim 1 is characterized in that: The energy storage tank and the circulating water pump are connected through a water pipe, and the top of the energy storage tank is provided with an energy discharge pipe connected to the energy storage tank.

3. The device for cascade utilization of waste heat from incineration of hazardous waste according to claim 1 is characterized in that: A smoke inlet pipe connected to the sealing sleeve is arranged at one end of the bottom surface of the sealing sleeve, and a smoke guide pipe connected to the incinerator body and used for guiding the smoke is arranged at the bottom of the smoke inlet pipe.

4. The device for cascade utilization of waste heat from incineration of hazardous waste according to claim 1 is characterized in that: A smoke exhaust pipe connected to the sealing sleeve is arranged at one end of the sealing sleeve located on the top surface of the heat exchange box, and a purifier for purifying smoke is arranged on the top of the smoke exhaust pipe.

5. The device for cascade utilization of waste heat from incineration of hazardous waste according to claim 1 is characterized in that: The heat exchange box is communicated with the inner cavity of the incinerator body, and a plurality of reinforcing cross bars are arranged at the bottom of the heat exchange box, which are respectively fixedly connected to the inner wall of the incinerator body and used for supporting the heat exchange box.

6. The device for cascade utilization of waste heat from incineration of hazardous waste according to claim 1 is characterized in that: The base, the heat exchange box, the sealing sleeve, the heat exchange tube, the first flow guide tube and the second flow guide tube are all made of stainless steel.

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