Flue gas waste heat recovery equipment with desulfurization function

Abstract

The utility model relates to the technical field of flue gas treatment, and discloses flue gas waste heat recovery equipment with a desulfurization function, which comprises a box body, a gas inlet pipe is fixedly connected with the top surface of the box body in a penetrating manner, a purification device is arranged on the box body, and the purification device comprises a filtering part. According to the flue gas waste heat recovery equipment with the desulfurization function, by arranging a discharging pipe, a cover plate, a mounting plate, a protective shell, a sealing plate, a collecting barrel, a filter plate, a sliding rod, a limiting barrel and a spring, when a gas inlet pipe is used for guiding in flue gas, the filter plate is used for filtering the flue gas, and the interior of the collecting barrel is cleaned, the discharging pipe is rotated, so that the right end face of the discharging pipe extrudes the left end face of the mounting plate; the cover plate is opened, the collecting barrel can be taken down towards the left side, meanwhile, the spring extends, the left end face of the sealing plate makes extrusion contact with the right end face of the protective shell, smoke does not circulate in the corresponding protective shell any more, and the device can clean the interior of the mounting barrel under the condition that the device is not shut down.

Description

A flue gas waste heat recovery device with desulfurization function Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to a flue gas waste heat recovery device with desulfurization function. Background Technology

[0002] When treating flue gas, it is necessary to filter the flue gas, recover waste heat, and desulfurize it.

[0003] Chinese patent disclosure (CN214891302U) discloses a flue gas waste heat recovery device with filtration function. It includes a flat plate, a cover plate, a heating pipe, and bolts. A housing is mounted on the upper surface of the flat plate. An air inlet pipe is embedded in one side of the housing. A retaining frame is welded to the lower surface of the cover plate, and a filter element is installed inside the retaining frame. The retaining frame is inserted into the air inlet pipe. Symmetrical screw holes are opened at the top of the air inlet pipe. Symmetrical circular holes are formed through the cover plate. Two bolts pass through the circular holes and washers, respectively, and engage with the screw holes. The heating pipe is installed inside the housing. A water inlet pipe is embedded in one side of the housing below the air inlet pipe, and a water outlet pipe is embedded in the other side of the housing. An air outlet pipe is embedded in one side of the top of the housing. This invention has the advantages of simple structure, convenient use, filtering dust and other impurities in the high-temperature flue gas entering the housing, and rapidly heating cool water using the heat contained in the flue gas.

[0004] However, it still has the following drawbacks: the device uses filter elements to filter and remove dust from the flue gas, but cleaning the filter elements requires closing the inlet pipe and stopping the treatment of the flue gas, which reduces the treatment efficiency. Therefore, we propose a flue gas waste heat recovery device with desulfurization function to solve this problem. Summary of the Invention

[0005] The purpose of this invention is to provide a flue gas waste heat recovery device with desulfurization function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flue gas waste heat recovery device with desulfurization function, comprising a housing, wherein an air inlet pipe is fixedly and continuously connected to the top surface of the housing, and a purification device is provided on the housing, wherein the purification device includes a filter section;

[0007] The filter section includes a sealing plate, a sliding rod is fixedly connected to the right end face of the sealing plate, a limiting cylinder is slidably sleeved on the outer surface of the right end of the sliding rod, and the right end face of the limiting cylinder is fixedly connected to the inner wall of the box.

[0008] A purification unit is located on the right side of the enclosure;

[0009] The purification unit includes a purification chamber containing an alkaline solution. An air outlet shell is fixedly connected to the inner wall of the purification chamber, and an atomizing nozzle is provided on the top surface of the air outlet shell.

[0010] A further improvement is that the filtration section also includes a discharge pipe, a cover plate, a mounting plate, a protective shell, a collection cylinder, a filter plate, a heat exchange pipe, and a spring. The outer surface of the collection cylinder is provided with a mounting hole, and the inner wall of the collection cylinder is fixedly connected to the outer surface of the filter plate. By setting up the collection cylinder and the filter plate, it is convenient to filter and collect the flue gas.

[0011] A further improvement is that the outer surface of the mounting plate is provided with threaded holes, the mounting plate is threaded onto the outer surface of the collection cylinder, and the outer surface of the mounting plate is fixedly connected to the inner wall of the box. By setting the mounting plate, it is convenient to install and position the collection cylinder, and to facilitate the installation and disassembly of the collection cylinder.

[0012] A further improvement is that the protective shell is fixedly fitted onto the outer surface of the heat exchange tube, the left end face of the protective shell is fixedly connected to the right end face of the mounting plate, the outer surface of the heat exchange tube is fixedly penetrated through the inner wall of the box and extends to the outside of the box, and the bottom of the heat exchange tube is used to connect to the cold water pipe. By setting the protective shell and the heat exchange tube, after the flue gas passes through the filter plate, it contacts the outer surface of the heat exchange tube to heat the cold water inside the heat exchange tube, and the heat is recovered and reused.

[0013] A further improvement is that the outer surface of the right end of the discharge pipe is threaded through the left end face of the box and extends into the inside of the box. The outer surface of the cover plate is threaded to the inner wall of the discharge pipe. The inner diameter of the discharge pipe is larger than the outer diameter of the collection cylinder. By setting the cover plate and the discharge pipe, rotating the discharge pipe causes the right end face of the discharge pipe to press against the left end face of the mounting plate, and the collection cylinder can be taken out to the left, while preventing unfiltered flue gas from entering the purification box.

[0014] A further improvement is that the left end of the spring is fixedly connected to the right end face of the slide rod, the right end of the spring is fixedly connected to the inner wall of the limiting cylinder, and the left end face of the sealing plate is pressed against the right end face of the collecting cylinder. By setting the sealing plate, spring, slide rod and limiting cylinder, when the collecting cylinder is removed, the elastic force of the spring is used to make the left end face of the sealing plate press against the right end face of the protective shell, thereby improving the sealing performance inside the corresponding protective shell.

[0015] A further improvement is that the purification unit also includes a connecting pipe. An air outlet is provided on the right end face of the housing. The left end face of the connecting pipe is fixedly connected to the right end face of the housing. The outer surface of the bottom end of the connecting pipe is fixedly penetrated through the top surface of the purification housing and extends into the interior of the purification housing. An air guide hole is provided on the top surface of the air outlet shell. The bottom surface of the connecting pipe is fixedly connected to the top surface of the air outlet shell. By setting up the connecting pipe, the purification housing, and the air outlet shell, the filtered flue gas enters the interior of the purification housing and is desulfurized using an alkaline solution.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This flue gas waste heat recovery equipment with desulfurization function is equipped with a discharge pipe, cover plate, mounting plate, protective shell, sealing plate, collection cylinder, filter plate, slide rod, limit cylinder and spring. Flue gas is introduced through the inlet pipe and filtered by the filter plate. When cleaning the inside of the collection cylinder, the discharge pipe is rotated so that the right end of the discharge pipe presses against the left end of the mounting plate. The cover plate is opened and the collection cylinder can be removed to the left. At the same time, the spring extends so that the left end of the sealing plate presses against the right end of the protective shell, so that the flue gas no longer flows inside the corresponding protective shell. This allows the device to clean the inside of the mounting cylinder without stopping the machine.

[0018] By setting up heat exchange tubes with water inlet pipes connected to the bottom, flue gas passes through the filter plate and contacts the outer surface of the heat exchange tubes, heating the cold water inside the heat exchange tubes. Then, the hot water is discharged from the top of the heat exchange tubes, which facilitates the recovery and reuse of waste heat in the flue gas.

[0019] By setting up connecting pipes, a purification chamber, and an outlet shell, the flue gas flows in an alkaline solution inside the purification chamber for desulfurization treatment. Attached Figure Description

[0020] Figure 1 is a three-dimensional structural diagram of the purification device of this utility model;

[0021] Figure 2 is a three-dimensional structural cross-sectional view of the purification device of this utility model;

[0022] Figure 3 is a partial cross-sectional view of the three-dimensional structure of the purification device of this utility model;

[0023] Figure 4 is an enlarged view of the structure at point A in Figure 3;

[0024] Figure 5 is a three-dimensional structural diagram of the heat exchange tube of this utility model.

[0025] In the diagram: 1. Box body, 2. Purification device, 3. Air inlet pipe, 21. Filter section, 22. Purification section, 211. Discharge pipe, 212. Cover plate, 213. Mounting plate, 214. Protective shell, 215. Sealing plate, 216. Collection cylinder, 217. Filter plate, 218. Heat exchange pipe, 219. Slide rod, 210. Limiting cylinder, 201. Spring, 221. Connecting pipe, 222. Purification box, 223. Air outlet shell. 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 protection scope of the present utility model.

[0027] Please refer to Figures 1-5. This utility model provides a technical solution: a flue gas waste heat recovery device with desulfurization function, including a box 1, an air inlet pipe 3 is fixedly and continuously connected to the top surface of the box 1, and a purification device 2 is provided on the box 1, the purification device 2 including a filter section 21.

[0028] The filter section 21 includes a sealing plate 215, a slide rod 219 fixedly connected to the right end face of the sealing plate 215, a limiting cylinder 210 slidably sleeved on the outer surface of the right end of the slide rod 219, and the right end face of the limiting cylinder 210 fixedly connected to the inner wall of the box 1. The filter section 21 also includes a discharge pipe 211, a cover plate 212, a mounting plate 213, a protective shell 214, a collection cylinder 216, a filter plate 217, a heat exchange pipe 218, and a spring 201.

[0029] The mounting plate 213 has a threaded hole on its outer surface. The mounting plate 213 is threaded onto the outer surface of the collection cylinder 216. The outer surface of the mounting plate 213 is fixedly connected to the inner wall of the box 1. The outer surface of the collection cylinder 216 has an installation hole. The inner wall of the collection cylinder 216 is fixedly connected to the outer surface of the filter plate 217.

[0030] The outer surface of the right end of the discharge pipe 211 is threaded through the left end face of the box 1 and extends into the inside of the box 1. The outer surface of the cover plate 212 is threadedly connected to the inner wall of the discharge pipe 211. The inner wall diameter of the discharge pipe 211 is larger than the outer surface diameter of the collection cylinder 216.

[0031] The protective shell 214 is fixedly sleeved on the outer surface of the heat exchange tube 218. The left end face of the protective shell 214 is fixedly connected to the right end face of the mounting plate 213. The outer surface of the heat exchange tube 218 is fixedly penetrated through the inner wall of the box 1 and extends to the outside of the box 1. The bottom of the heat exchange tube 218 is used to connect to the cold water pipe. By setting the heat exchange tube 218 and connecting the bottom end of the heat exchange tube 218 to the water inlet pipe, the flue gas passes through the filter plate 217 and contacts the outer surface of the heat exchange tube 218 to heat the cold water inside the heat exchange tube 218. Then the hot water is discharged from the top of the heat exchange tube 218, which facilitates the recovery and reuse of the waste heat in the flue gas.

[0032] The left end of spring 201 is fixedly connected to the right end face of slide rod 219, and the right end of spring 201 is fixedly connected to the inner wall of limiting cylinder 210. The left end face of sealing plate 215 is in contact with the right end face of collecting cylinder 216. By setting up discharge pipe 211, cover plate 212, mounting plate 213, protective shell 214, sealing plate 215, collecting cylinder 216, filter plate 217, slide rod 219, limiting cylinder 210 and spring 201, flue gas is introduced through air inlet pipe 3 and filtered through filter plate 217. When filtering the flue gas and cleaning the inside of the collection cylinder 216, rotate the discharge pipe 211 so that the right end face of the discharge pipe 211 presses against the left end face of the mounting plate 213. Open the cover plate 212 and the collection cylinder 216 can be removed to the left. At the same time, the spring 201 extends so that the left end face of the sealing plate 215 presses against the right end face of the protective shell 214, so that the flue gas no longer flows inside the corresponding protective shell 214. This allows the device to clean the inside of the mounting cylinder 216 without stopping the machine.

[0033] A purification unit 22 is located on the right side of the housing 1;

[0034] The purification unit 22 includes a purification box 222, which contains an alkaline solution. An air outlet shell 223 is fixedly connected to the inner wall of the purification box 222. An atomizing nozzle is provided on the top surface of the air outlet shell 223. The purification unit 22 also includes a connecting pipe 221.

[0035] An air outlet is provided on the right end face of the housing 1. The left end face of the connecting pipe 221 is fixedly connected to the right end face of the housing 1. The outer surface of the bottom end of the connecting pipe 221 is fixedly penetrated through the top surface of the purification box 222 and extends into the interior of the purification box 222. An air guide hole is provided on the top surface of the air outlet shell 223. The bottom surface of the connecting pipe 221 is fixedly connected to the top surface of the air outlet shell 223. By setting up the connecting pipe 221, the purification box 222 and the air outlet shell 223, the flue gas flows in the alkaline solution inside the purification box 222 for desulfurization treatment.

[0036] In use, connect the cold water pipe to the bottom of the heat exchange tube 218, and introduce flue gas through the inlet pipe 3. The flue gas enters the collection cylinder 216, where the filter plate 217 filters it. The flue gas then comes into full contact with the outer surface of the heat exchange tube 218, using the residual heat to heat the cold water inside. The hot water then exits from the top of the heat exchange tube 218. The flue gas then passes through the connecting pipe 221 and enters the outlet shell 223, exiting upwards through the shell. The flue gas then mixes with the alkaline solution... The process involves contacting the gas to perform desulfurization. The discharge pipe 211 is rotated, causing its right end to press against the left end of the mounting plate 213. The cover plate 212 is then rotated and removed. The collecting cylinder 216 is then rotated and removed to the left. Simultaneously, the spring 201 extends, pushing the sliding rod 219 and the sealing plate 215 to the left. The left end of the sealing plate 215 presses against the right end of the protective shell 214, sealing the interior of the protective shell. The flue gas then passes through the collecting cylinder 216 on the other side for filtration.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas waste heat recovery device with desulfurization function, comprising a housing (1), characterized in that: An air inlet pipe (3) is fixedly connected to the top surface of the box (1). A purification device (2) is provided on the box (1). The purification device (2) includes a filter section (21). The filter section (21) includes a sealing plate (215). A sliding rod (219) is fixedly connected to the right end of the sealing plate (215). A limiting cylinder (210) is slidably sleeved on the outer surface of the right end of the sliding rod (219). The right end of the limiting cylinder (210) is fixedly connected to the inner wall of the box (1). A purification section (22) is provided on the right side of the box (1). The purification section (22) includes a purification box (222). An alkaline solution is provided inside the purification box (222). An air outlet shell (223) is fixedly connected to the inner wall of the purification box (222). An atomizing nozzle is provided on the top surface of the air outlet shell (223).

2. The flue gas waste heat recovery equipment with desulfurization function according to claim 1, characterized in that: The filter section (21) also includes a discharge pipe (211), a cover plate (212), a mounting plate (213), a protective shell (214), a collection cylinder (216), a filter plate (217), a heat exchange pipe (218), and a spring (201). The outer surface of the collection cylinder (216) is provided with a mounting hole, and the inner wall of the collection cylinder (216) is fixedly connected to the outer surface of the filter plate (217).

3. The flue gas waste heat recovery equipment with desulfurization function according to claim 2, characterized in that: The mounting plate (213) has a threaded hole on its outer surface. The mounting plate (213) is threaded onto the outer surface of the collecting cylinder (216). The outer surface of the mounting plate (213) is fixedly connected to the inner wall of the box (1).

4. The flue gas waste heat recovery equipment with desulfurization function according to claim 2, characterized in that: The protective shell (214) is fixedly sleeved on the outer surface of the heat exchange tube (218). The left end face of the protective shell (214) is fixedly connected to the right end face of the mounting plate (213). The outer surface of the heat exchange tube (218) is fixedly penetrated through the inner wall of the box (1) and extends to the outside of the box (1). The bottom of the heat exchange tube (218) is used to connect to the cold water pipe.

5. A flue gas waste heat recovery device with desulfurization function according to claim 2, characterized in that: The outer surface of the right end of the discharge pipe (211) is threaded through the left end face of the box (1) and extends into the inside of the box (1). The outer surface of the cover plate (212) is threaded to the inner wall of the discharge pipe (211). The inner wall diameter of the discharge pipe (211) is larger than the outer surface diameter of the collection cylinder (216).

6. A flue gas waste heat recovery device with desulfurization function according to claim 2, characterized in that: The left end of the spring (201) is fixedly connected to the right end face of the slide rod (219), the right end of the spring (201) is fixedly connected to the inner wall of the limiting cylinder (210), and the left end face of the sealing plate (215) is pressed against the right end face of the collecting cylinder (216).

7. The flue gas waste heat recovery equipment with desulfurization function according to claim 1, characterized in that: The purification unit (22) also includes a connecting pipe (221). The right end face of the box (1) is provided with an air outlet. The left end face of the connecting pipe (221) is fixedly connected to the right end face of the box (1). The outer surface of the bottom end of the connecting pipe (221) is fixedly connected through the top surface of the purification box (222) and extends into the interior of the purification box (222). The top surface of the air outlet shell (223) is provided with an air guide hole. The bottom surface of the connecting pipe (221) is fixedly connected to the top surface of the air outlet shell (223).

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