Energy-saving digestion furnace with waste heat recovery function

Abstract

The utility model discloses an energy-saving digestion furnace with a waste heat recovery function, and relates to the technical field of digestion furnaces. The waste heat recovery device comprises a digestion furnace and a waste heat recovery assembly, the digestion furnace comprises three digestion pipes, the top of each digestion pipe is fixedly connected with a sealing ring, the top of each sealing ring is in contact with an exhaust pipe, the left side of each exhaust pipe is fixedly connected with an exhaust port, and the waste heat recovery assembly comprises a heat exchanger. A hose is fixedly connected to the left side of the heat exchanger, a connecting valve is fixedly connected to the side, close to the exhaust port, of the hose, and a steam generator is arranged on the right side of the heat exchanger. By arranging the waste heat recovery assembly, heating is conducted after installation is completed, waste gas generated in the digestion process of the digestion pipe is exhausted through the exhaust pipe at the moment, enters the hose through the exhaust port and reacts with the steam generator through the heat exchanger to generate electric energy, and the problem that a large amount of waste heat generated when an existing digestion furnace works is directly exhausted into the environment is solved. And energy waste is caused.

Description

Technical Field

[0001] This utility model belongs to the field of digester technology, and in particular relates to an energy-saving digester with waste heat recovery. Background Technology

[0002] A digestion furnace is a device used for digesting substances such as grains, food, and feed. It adopts a pit-type electric heating method, which allows the sample to obtain a good thermal effect in the electric heating furnace, thereby accelerating the digestion speed. The device uses intelligent temperature instrument digital control technology to control the temperature in the electric heating furnace and can directly display the temperature value for easy monitoring.

[0003] In the detection technology of nitrogen element in alternative fuels, the digestion furnace is one of the key pieces of equipment. Traditional digestion furnaces usually use electric heating to heat the sample to a high temperature for digestion. However, the digestion process requires long-term high-temperature heating, which consumes a lot of electrical energy. A large amount of waste heat generated during the digestion process is directly released into the environment, resulting in energy waste. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving digester with waste heat recovery. Specifically, after installing the digestion pipe and exhaust pipe, a connecting valve is used to connect the exhaust port to a flexible hose. Then, an electric heating element is activated to heat the digestion chamber. During digestion, the waste gas generated in the digestion pipe is discharged through the exhaust pipe, enters the flexible hose through the exhaust port, and then enters the heat exchanger. Heat exchange occurs in the heat exchanger, recovering the waste heat. This recovered waste heat is used in a steam generator to further generate electricity, which is then used to heat the digestion chamber. This avoids energy waste and solves the problem of existing digesters directly releasing large amounts of waste heat into the environment, causing energy waste.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an energy-saving digester with waste heat recovery, comprising a digester and a waste heat recovery assembly. A limiting plate is fixedly connected to the top of the digester. A support frame 1 is in contact with the inner wall of the limiting plate. A support plate is fixedly connected inside the support frame 1. Three digestion tubes are fixedly connected inside the support plate. A sealing ring is fixedly connected to the top of each digestion tube. A support frame 2 is in contact with the top of the support frame 1. An exhaust pipe is fixedly connected inside the support frame 2. The bottom of the exhaust pipe contacts the top of the sealing ring. An exhaust port is fixedly connected to the left side of the exhaust pipe. The waste heat recovery assembly includes a heat exchanger. A flexible hose is fixedly connected to the left side of the heat exchanger. A connecting valve is fixedly connected to the side of the flexible hose near the exhaust port. The inner wall of the connecting valve is threaded to the outer surface of the exhaust port. A steam generator is located on the right side of the heat exchanger. The heat exchanger recovers waste heat, which is then used in the steam generator to generate electricity, which is used to heat the digestion chamber, thus avoiding energy waste and improving the thermal efficiency of the device.

[0007] Furthermore, the inner wall of the second support frame is inserted into the outer surface of the first support frame, a fan is provided on the right side inside the exhaust pipe, and a handle is fixedly connected to the top of the second support frame. The insertion design of the second support frame and the first support frame facilitates quick installation and disassembly, improves the flexibility of the equipment, accelerates the exhaust of waste gas, improves digestion efficiency, and the handle design makes it convenient for users to operate and move the device.

[0008] Furthermore, the digestion furnace has three digestion chambers fixedly connected inside. The outer surface of the digestion tube is inserted into the inner wall of the digestion chamber. Support frames three are fixedly connected to the left and right sides of the digestion chamber inside the digestion furnace. Several electric heating tubes are fixedly connected to one side of each of the two support frames three. The design of the three digestion chambers supports the simultaneous processing of multiple samples, improving experimental efficiency. The electric heating tubes are evenly distributed on both sides of the digestion chamber to ensure uniform heating and improve digestion effect.

[0009] Furthermore, the digestion furnace has heat insulation cotton fixedly connected to all four inner walls, a temperature sensor fixedly connected to the front of the interior, and a touch panel fixedly connected to the front of the digestion furnace. The heat insulation cotton reduces heat loss, improves thermal efficiency, and reduces energy consumption. The temperature sensor and touch panel enable precise temperature control, improving the accuracy and convenience of the experiment.

[0010] Furthermore, lock boxes are fixedly connected to both the left and right sides of the digester. A support block is fixedly connected to the center of the lock box, and two sliding rods are slidably connected inside the support block. The design of the lock box and sliding rods facilitates the quick fixing and disassembly of the digester components, improving the maintenance efficiency of the device.

[0011] Furthermore, a spring is fitted on the outer surface of the slide rod, a slider is fixedly connected to the opposite side of the slide rod, a toggle block is fixedly connected to the front of the slider, and a lock nut is fixedly connected to the bottom of the slider. The combination design of the spring and the slider enables the lock nut to lock automatically, ensuring the stability of the device during operation.

[0012] Furthermore, a base plate is provided at the bottom of the digester, and a lock is fixedly connected to the top of the base plate near the lock nut. The outer surface of the lock nut contacts the outer surface of the lock. The design of the base plate and the lock enhances the overall stability of the digester and prevents the device from shifting or tilting during operation.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model incorporates a waste heat recovery component. Specifically, after the digestion tube and exhaust tube are installed, the exhaust port is connected to the hose using a connecting valve. Then, the electric heating tube is activated to heat the digestion chamber. During digestion, the waste gas generated in the digestion tube is discharged through the exhaust pipe, enters the hose through the exhaust port, and then enters the heat exchanger through the hose. Heat exchange occurs in the heat exchanger, recovering the waste heat. The recovered waste heat is used in the steam generator to further generate electricity, which is then used to heat the digestion chamber. This avoids energy waste and improves the thermal utilization rate of the device.

[0015] 2. This utility model features a lock nut box. Specifically, when maintenance is required, two toggle blocks are simultaneously moved, causing the slide rod to slide inside the support block. At this time, the lock nut disengages from the lock, allowing the base plate to be released for maintenance inside the digester. Similarly, during installation, the spring keeps the lock nut tightly against the lock to secure the base plate. This makes installation and disassembly convenient, enabling quick maintenance inside the digester and improving maintenance efficiency.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0020] Figure 3This is a schematic diagram of the overall disassembled structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the exhaust pipe structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the digester furnace of this utility model;

[0023] Figure 6 This is a schematic diagram of the lock box structure of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Digester; 11. Limiting plate; 111. Support frame one; 112. Support plate; 113. Digestion tube; 114. Sealing ring; 12. Support frame two; 121. Exhaust pipe; 122. Exhaust port; 123. Fan; 124. Handle; 13. Digestion chamber; 14. Support frame three; 141. Electric heating tube; 15. Insulation cotton; 16. Temperature sensor; 161. Touch panel; 17. Lock box; 171. Support block; 172. Slide rod; 173. Spring; 174. Slider; 175. Actuating block; 176. Sliding hole; 177. Lock nut; 18. Base plate; 181. Lock; 2. Waste heat recovery assembly; 21. Heat exchanger; 211. Hose; 212. Connecting valve; 22. Steam generator. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1-6As shown, this utility model is an energy-saving digester with waste heat recovery, including a digester 1 and a waste heat recovery assembly 2. A limiting plate 11 is fixedly connected to the top of the digester 1. A support frame 111 is in contact with the inner wall of the limiting plate 11. A support plate 112 is fixedly connected inside the support frame 111. Three digestion tubes 113 are fixedly connected inside the support plate 112. A sealing ring 114 is fixedly connected to the top of the digestion tubes 113. A support frame 22 is in contact with the top of the support frame 111. An exhaust pipe 121 is fixedly connected inside the support frame 22. The bottom of the exhaust pipe 121 is in contact with the top of the sealing ring 114. An exhaust port 122 is fixedly connected to the left side of the exhaust pipe 121. The waste heat recovery assembly 2 includes a heat exchanger 21. A hose 211 is fixedly connected to the left side of the heat exchanger 21. A connecting valve 212 is fixedly connected to the side of the hose 211 near the exhaust port 122. The inner wall of the connecting valve 212 is threadedly connected to the outer surface of the exhaust port 122. A steam generator 22 is provided on the right side of the heat exchanger 21.

[0028] The inner wall of support frame 2 12 is inserted into the outer surface of support frame 1 111. A fan 123 is installed on the right side inside the exhaust pipe 121. A handle 124 is fixedly connected to the top of support frame 2 12.

[0029] The digester furnace 1 has three digestion chambers 13 fixedly connected inside. The outer surface of the digestion tube 113 is inserted into the inner wall of the digestion chamber 13. Support frames 3 14 are fixedly connected to the left and right sides of the digestion chamber inside the digester furnace 1. Several electric heating tubes 141 are fixedly connected to the corresponding side of the two support frames 3 14. By setting up the waste heat recovery component 2, after the digestion tube 13 and the exhaust pipe 121 are installed, the exhaust port 122 is connected to the hose 211 using the connecting valve 212. Then, the electric heating tubes 141 are started to heat the digestion chamber 13. At this time, the waste gas generated during the digestion process of the digestion tube 113 is discharged through the exhaust pipe 121, enters the hose 211 through the exhaust port 122, and enters the heat exchanger 21 through the hose 211. Heat exchange takes place in the heat exchanger 21 to recover waste heat. The recovered waste heat is used in the steam generator 22 to further react and generate electricity, which is used to heat the digestion chamber, avoiding energy waste and improving the thermal utilization rate of the device.

[0030] The digester 1 has heat insulation cotton 15 fixedly connected to the inner walls of all four sides, a temperature sensor 16 fixedly connected to the front of the inside, and a touch panel 161 fixedly connected to the front of the digester 1.

[0031] Lock boxes 17 are fixedly connected to the left and right sides of the digester 1. A support block 171 is fixedly connected to the center of the lock box 17. Two slide rods 172 are slidably connected inside the support block 171.

[0032] A spring 173 is fitted on the outer surface of the slide rod 172. A slider 174 is fixedly connected to the opposite side of the slide rod 172. A toggle block 175 is fixedly connected to the front of the slider 174. A lock nut 177 is fixedly connected to the bottom of the slider 174.

[0033] The digester 1 has a base plate 18 at the bottom. A lock 181 is fixedly connected to the top of the base plate 18 near the lock nut 177. The outer surface of the lock nut 177 contacts the outer surface of the lock 181. By setting a lock nut box 17, when the device needs to be inspected, two toggle blocks 175 are moved at the same time, causing the slide rod 172 to slide inside the support block 171. At this time, the lock nut 177 disengages from the lock 181, and the base plate 18 can be released to inspect the inside of the digester 1. The same principle applies during installation. The spring 173 keeps the lock nut 177 tightly against the lock 181 to fix the base plate. This makes installation and disassembly more convenient and allows for quick inspection of the inside of the digester 1, improving maintenance efficiency.

[0034] A specific application of this embodiment is as follows: In use, firstly, the digestion tube 113 is inserted into the digestion chamber 13. At this time, the outer surface of the support frame 111 contacts the inner wall of the limiting plate 11, facilitating installation and making the digestion tube 113 more stable during use. Then, the support frame 2 12 is inserted on top of the support frame 111, so that the bottom of the exhaust pipe 121 is in close contact with the sealing ring 114 at the top of the digestion tube 113. At this time, the inner wall of the support frame 2 12 contacts the outer surface of the support frame 111. Then, the exhaust pipe 121 is connected to the hose 211 through the connecting valve 212. Then, the electric heating tube 141 is activated to heat the digestion chamber 13, causing the digestion tube 113 to undergo a digestion reaction. During the digestion process, the waste gas generated by the digestion tube 113 is discharged through the exhaust pipe 121, enters the hose 211 through the exhaust port 122, and then enters the heat exchanger 21 of the disclosed model ALFA LAVAL M series through the hose 211. Heat exchange occurs in the heat exchanger 21 to recover waste heat. The recovered waste heat is used for the disclosed model MIURA. The LX series steam generator 22 further reacts to generate electrical energy, which is used to heat the digestion chamber. When maintenance is required, the two toggle blocks 175 are moved simultaneously, causing the slide bar 172 to slide inside the support block 171. At this time, the lock nut 177 disengages from the lock buckle 181, and the base plate 18 can be released to allow maintenance of the digester 1. The same principle applies during installation. The spring 173 keeps the lock nut 177 tightly against the lock buckle 181 to fix the base plate. This makes installation and disassembly convenient and allows for quick maintenance of the digester 1.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art of digester furnaces to better understand and utilize the present utility model. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An energy-saving digester with waste heat recovery, characterized in that: The digester includes a digester (1) and a waste heat recovery assembly (2). A limiting plate (11) is fixedly connected to the top of the digester (1). A support frame (111) is in contact with the inner wall of the limiting plate (11). A support plate (112) is fixedly connected inside the support frame (111). Three digestion tubes (113) are fixedly connected inside the support plate (112). A sealing ring (114) is fixedly connected to the top of each digestion tube (113). The top of the support frame (111) is in contact with a support frame. Second (12), an exhaust pipe (121) is fixedly connected inside the support frame second (12). The bottom of the exhaust pipe (121) contacts the top of the sealing ring (114). An exhaust port (122) is fixedly connected to the left side of the exhaust pipe (121). The waste heat recovery assembly (2) includes a heat exchanger (21). A hose (211) is fixedly connected to the left side of the heat exchanger (21). A connecting valve (212) is fixedly connected to the side of the hose (211) near the exhaust port (122).

2. The energy-saving digester with waste heat recovery according to claim 1, characterized in that, The inner wall of the connecting valve (212) is threaded to the outer surface of the exhaust port (122). A steam generator (22) is provided on the right side of the heat exchanger (21). The inner wall of the second support frame (12) is inserted into the outer surface of the first support frame (111). A fan (123) is provided on the right side inside the exhaust pipe (121). A handle (124) is fixedly connected to the top of the second support frame (12).

3. The energy-saving digester with waste heat recovery according to claim 2, characterized in that, The digester (1) has three digestion chambers (13) fixedly connected inside. The outer surface of the digestion tube (113) is inserted into the inner wall of the digestion chamber (13). The digester (1) has three support frames (14) fixedly connected inside the digester (1) near the left and right sides of the digestion chamber. Several electric heating tubes (141) are fixedly connected to the corresponding side of the two support frames (14).

4. An energy-saving digester with waste heat recovery according to claim 3, characterized in that, The digester (1) has heat insulation cotton (15) fixedly connected to the inner walls on all four sides, a temperature sensor (16) fixedly connected to the front of the interior, and a touch panel (161) fixedly connected to the front of the digester (1).

5. An energy-saving digester with waste heat recovery according to claim 4, characterized in that, The digester (1) is fixedly connected to a lock box (17) on both the left and right sides. A support block (171) is fixedly connected to the center of the lock box (17). Two slide rods (172) are slidably connected inside the support block (171).

6. An energy-saving digester with waste heat recovery according to claim 5, characterized in that, A spring (173) is sleeved on the outer surface of the slide rod (172). A slider (174) is fixedly connected to the opposite side of the slide rod (172). A toggle block (175) is fixedly connected to the front of the slider (174). A lock nut (177) is fixedly connected to the bottom of the slider (174).

7. An energy-saving digester with waste heat recovery according to claim 6, characterized in that, The digester (1) is provided with a bottom plate (18) at the bottom. A lock (181) is fixedly connected to the top of the bottom plate (18) near the lock nut (177). The outer surface of the lock nut (177) is in contact with the outer surface of the lock (181).

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