Gypsum acid making grate cooler waste heat recovery reinforcing structure

Abstract

The utility model provides a kind of gypsum acid production grate cooler waste heat recovery reinforcing structure, it is related to industrial processing technical field, including grate cooler body, the lower end of waste heat recovery tank is provided with hot gas guide port, the inboard of hot gas guide port is equipped with sundry filter screen, the middle of waste heat recovery tank is provided with heat storage core body, the upper of heat storage core body is provided with guide plate;When the wind that gypsum material cools enters corresponding waste heat recovery tank with heat, sundry filter screen can effectively intercept sundry that wind carries, prevent it from entering waste heat recovery tank, ensure heat exchange efficiency, after hot air enters waste heat recovery tank, honeycomb heat storage core body can effectively capture heat, after being captured by the metal fin on the heat-absorbing inner bin surface, it is transferred to heat exchange pipe, then it is discharged, compared with simply relying on heat exchange pipe to capture, contact area is larger, and capture efficiency is higher, improve the recycling rate of heat.

Description

Technical Field

[0001] This utility model relates to the field of industrial processing technology, and in particular to a structure for strengthening the waste heat recovery of a gypsum acid grate cooler. Background Technology

[0002] Gypsum-based sulfuric acid production refers to the technology of producing sulfuric acid from gypsum through high-temperature calcination and other processes. Grate coolers are commonly used cooling equipment in industries such as cement and metallurgy. They utilize grates to transport materials and achieve efficient cooling through forced ventilation. In gypsum-based sulfuric acid production, calcination of gypsum produces high-temperature clinker (such as calcium oxide). Grate coolers can quickly cool these high-temperature materials to prevent secondary reactions caused by excessive temperature. At the same time, waste heat is recovered for system energy supply. Furthermore, the material flow rate can be controlled through grate conveying to ensure the stable operation of subsequent sulfuric acid preparation processes.

[0003] A search revealed that the document with publication number "CN215864684U" mentions "a waste heat recovery system for a grate cooler, comprising a body and a grate plate disposed within the body. The body has an inlet and an outlet, the inlet being located above the grate plate and the outlet located at the right end of the body. An exhaust pipe is connected to the body and communicates with the interior of the body. The exhaust pipe is located above the grate plate and contains two supports. A rotating shaft is rotatably disposed between the two supports. Multiple rotating plates are evenly distributed along the circumference of the rotating shaft, and spiral blades are distributed along the length of the rotating shaft. A heat exchange tube is sleeved on the outside of the exhaust pipe." In use, this utility model can recover waste heat and remove dust from the gas inside the pipeline between the grate cooler and the waste heat boiler, saving resources while better protecting the environment.

[0004] However, in the gypsum-to-acid production process, the grate cooler is one of the important pieces of equipment. Traditional grate coolers are mainly used to cool high-temperature gypsum materials. Existing grate coolers usually use simple ventilation devices to blow cold air onto the material on the grate to achieve cooling. In terms of waste heat recovery, they mostly collect heat from the airflow carrying heat through a single heat exchange pipe. For example, some conventional grate coolers simply rely on ordinary fans to introduce outside air, so that the air flows through the material layer and directly enters a relatively simple heat exchanger. This heat exchanger is mainly composed of several parallel metal tubes. Waste heat recovery is achieved by exchanging heat with the external medium through the metal tubes. This traditional grate cooler has obvious deficiencies in terms of uniformity of cold air distribution and waste heat recovery efficiency.

[0005] Therefore, we provide a waste heat recovery and enhanced structure for gypsum acid grate coolers to solve the above problems. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a structure for enhanced waste heat recovery in a gypsum acid grate cooler.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A waste heat recovery enhancement structure for a gypsum acid production grate cooler includes a grate cooler body. A feeding and cooling assembly is installed on the inner side of the grate cooler body. Exhaust grilles are provided at the bottom of the inner side of the grate cooler body. A grate plate is provided in the middle of the inner side of the grate cooler body. A vibration motor is installed on the lower side of the grate plate. A side baffle is provided on the right side of the vibration motor. A waste heat recovery assembly is provided on the rear side of the grate cooler body. The waste heat recovery assembly includes waste heat recovery boxes installed on the rear side of the grate cooler body. A hot gas guide port is provided at the lower end of the waste heat recovery box. A debris filter screen is installed inside the hot gas guide port. A heat storage core is provided in the middle of the waste heat recovery box. A guide plate is provided above the heat storage core. An exhaust port is installed at the upper end of the waste heat recovery box. A discharge port is provided on the right side of the grate cooler body.

[0009] As a further description of the above technical solution:

[0010] The feeding and cooling assembly includes an air guide groove welded to the lower side of the grate cooler body. A cylinder channel is provided inside the lower side of the air guide groove. A fan motor is installed on the left side of the cylinder channel, and a guide fan blade is installed on the inner side of the cylinder channel. A cold air supply pump is connected to the outer side of the air guide groove. The guide fan blade and the cylinder channel are sleeved together, and the guide fan blade is rotated by the fan motor.

[0011] As a further description of the above technical solution:

[0012] The cold air supply pump and the air guide duct are connected by a pipe. The cold air supply pump and the cylinder are connected by a guide fan blade to form an air supply structure. The guide fan blade has a spiral structure.

[0013] As a further description of the above technical solution:

[0014] The exhaust grille and the air guide channel are connected by a slot, and the exhaust grille and the grate are set in a one-to-one correspondence. The exhaust grille is set at a five-degree inclination and is arranged in a stepped manner. The air guide channel injects cold air into the grate from bottom to top through the exhaust grille.

[0015] As a further description of the above technical solution:

[0016] The debris filter screen and the hot air inlet are connected by a slot. The debris filter screen is a stainless steel mesh structure. The waste heat recovery box and the grate are symmetrically arranged one on each side.

[0017] As a further description of the above technical solution:

[0018] The heat storage core is connected to a heat absorption inner chamber via a central slot. A heat exchange tube is installed on the inner side of the heat absorption inner chamber. The heat storage core has a honeycomb structure. Metal fins are distributed on the surface of the heat absorption inner chamber. The heat exchange tube has a U-shaped structure. The heat storage core, the heat absorption inner chamber, and the heat exchange tube constitute a heat recovery structure.

[0019] As a further description of the above technical solution:

[0020] The guide plate is welded to the waste heat recovery box. The guide plate has a wavy structure and is arranged in a cross-stacked manner.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model utilizes a feeding and cooling component. When the cold air supply pump is started, it sends cold air into the air guide channel. The fan blade motor drives the guide fan blades to rotate along the channel. Because the guide fan blades have a spiral structure, the cold air can form a stronger and more uniform airflow when it rotates through the spiral of the guide fan blades, reducing dead air angles. As the cold air is sent into the grate cooler, the opening of the exhaust grille corresponds exactly to the grate plate, so that the cold air can uniformly cool the gypsum material on the grate plate from bottom to top, improving the utilization rate of the cold air.

[0023] 2. This utility model utilizes a waste heat recovery component. When the air carrying heat from the cooling gypsum material enters the corresponding waste heat recovery box, the debris filter effectively intercepts the debris carried by the air, preventing it from entering the waste heat recovery box and ensuring heat exchange efficiency. After the hot air enters the waste heat recovery box, the honeycomb-shaped heat storage core effectively captures the heat. After being captured by the metal fins on the surface of the heat absorption chamber, the heat is transferred to the heat exchange tube and then discharged. Compared with simply relying on the heat exchange tube for capture, this method has a larger contact area and higher capture efficiency, improving the heat recovery and utilization rate. Furthermore, when the heat enters the waste heat recovery box, it passes through the heat storage core and enters the guide plate. The cross-stacked guide plates can reduce the airflow speed and prolong the heat residence time, making the heat stay in the heat storage core for a longer period of time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall back structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the grate cooler body of this utility model;

[0027] Figure 4 This is a schematic diagram of the cooperative structure of the grate, vibrating motor and side baffle of this utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the waste heat recovery box of this utility model;

[0029] Figure 6 This is a schematic diagram of the combined structure of the heat storage core, dust collection box, and heat exchange tube of this utility model;

[0030] Figure 7 This is a schematic diagram of the internal structure of the air guide groove of this utility model.

[0031] The following are the labels in the diagram: 1. Grate cooler body; 2. Feeding and refrigeration components; 201. Air guide channel; 202. Cylindrical channel; 203. Fan motor; 204. Guide fan blade; 205. Cold air supply pump; 206. Exhaust grille; 207. Grate plate; 208. Vibration motor; 209. Side baffle; 3. Waste heat recovery components; 301. Waste heat recovery box; 302. Hot air guide port; 303. Debris filter screen; 304. Heat storage core; 305. Heat absorption chamber; 306. Heat exchange tube; 307. Guide plate; 308. Exhaust port; 4. Discharge port. Detailed Implementation

[0032] 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.

[0033] Please see Figure 1-7 As shown, this utility model provides a technical solution: a waste heat recovery enhancement structure for a gypsum acid grate cooler, including a grate cooler body 1, a feeding and cooling assembly 2 installed on the inner side of the grate cooler body 1, an exhaust grille 206 provided at the bottom of the inner side of the grate cooler body 1, a grate plate 207 provided in the middle of the inner side of the grate cooler body 1, a vibration motor 208 installed on the lower side of the grate plate 207, a side baffle 209 provided on the right side of the vibration motor 208, and a waste heat recovery assembly provided at the rear side of the grate cooler body 1. 3. The waste heat recovery assembly 3 includes a waste heat recovery box 301 installed on the rear side of the grate cooler body 1. A hot air guide port 302 is provided at the lower end of the waste heat recovery box 301. A debris filter screen 303 is installed inside the hot air guide port 302. A heat storage core 304 is provided in the middle of the waste heat recovery box 301. A guide plate 307 is provided above the heat storage core 304. An exhaust port 308 is installed at the upper end of the waste heat recovery box 301. A discharge port 4 is provided on the right side of the grate cooler body 1.

[0034] Furthermore, the feeding and cooling assembly 2 includes an air guide groove 201 welded to the lower side of the grate cooler body 1. A channel 202 is provided inside the lower side of the air guide groove 201. A fan motor 203 is installed on the left side of the channel 202, and a guide fan blade 204 is installed on the inner side of the channel 202. A cold air supply pump 205 is connected to the outer side of the air guide groove 201. The guide fan blade 204 and the channel 202 are sleeved together. The guide fan blade 204 is rotated by the fan motor 203. When the cold air supply pump 205 is started, the cold air supply pump 205 sends cold air into the air guide groove 201. The rotation of the guide fan blade 204 drives the cold air through the channel 202 and then into the interior of the grate cooler body 1. Compared with the traditional design of multiple independent fans, this structure can effectively reduce energy consumption and improve the uniformity of cold air distribution, ensuring the stability of the internal temperature of the grate cooler, thereby significantly improving the waste heat recovery efficiency.

[0035] Furthermore, the cold air supply pump 205 and the air guide duct 201 are connected by a pipe. The cold air supply pump 205 and the cylinder duct 202 form an air supply structure through the guide fan blade 204. The guide fan blade 204 has a spiral structure. When needed, the fan blade motor 203 drives the guide fan blade 204 to rotate along the cylinder duct 202. Because the guide fan blade 204 has a spiral structure, when the cold air passes through the spiral rotation of the guide fan blade 204, it can form a stronger and more uniform airflow, reducing airflow dead zones. In addition, during the process of cold air being sent into the grate cooler body 1, the spiral airflow can effectively break up heat dissipation air masses, further improving the cooling effect, ensuring temperature balance in each area, and avoiding local overheating.

[0036] Furthermore, the exhaust grille 206 and the air guide channel 201 are connected by a slot, and the exhaust grille 206 and the grate 207 are set in a one-to-one correspondence. The exhaust grille 206 is set at a five-degree inclination and is arranged in a stepped manner. The air guide channel 201 injects cold air into the grate 207 from bottom to top through the exhaust grille 206. When it is needed, the opening position of the exhaust grille 206 corresponds exactly to the grate 207, so that the cold air can uniformly cool the gypsum material on the grate 207 from bottom to top, thereby improving the utilization rate of the cold air.

[0037] Furthermore, the debris filter screen 303 and the hot air guide port 302 are connected by a slot. The debris filter screen 303 is a stainless steel mesh structure. The waste heat recovery box 301 and the grate plate 207 are symmetrically arranged one to one. When it is needed, when the air carrying heat from the cooling of the gypsum material enters the corresponding waste heat recovery box 301, the debris filter screen 303 can effectively intercept the debris carried by the air and prevent it from entering the waste heat recovery box 301, thus ensuring heat exchange efficiency.

[0038] Furthermore, the heat storage core 304 is connected to a heat absorption chamber 305 via a central slot. A heat exchange tube 306 is installed inside the heat absorption chamber 305. The heat storage core 304 has a honeycomb structure, and metal fins are distributed on the surface of the heat absorption chamber 305. The heat exchange tube 306 has a U-shaped structure. The heat storage core 304, the heat absorption chamber 305, and the heat exchange tube 306 constitute a heat recovery structure. When needed, hot air enters the waste heat recovery box 301, and the honeycomb heat storage core 304 can effectively capture heat. After being captured by the metal fins on the surface of the heat absorption chamber 305, the heat is transferred to the heat exchange tube 306 and then discharged. Compared with simply relying on the heat exchange tube 306 for capture, this method has a larger contact area and higher capture efficiency, thus improving the heat recovery and utilization rate.

[0039] Furthermore, the flow guide plate 307 is welded to the waste heat recovery box 301. The flow guide plate 307 has a wave-like structure and is arranged in a cross-stacked manner. When heat enters the waste heat recovery box 301, the heat passes through the heat storage core 304 and then enters the flow guide plate 307. The cross-stacked flow guide plates 307 can reduce the airflow speed and prolong the heat residence time, making the heat stay in the heat storage core 304 for a longer time.

[0040] Working Principle: When needed, the grate cooler body 1 is placed in the desired position. Gypsum material is then fed into the grate cooler body 1 through the inlet on the left, falling onto the grate plates 207. As the vibration motor 208 drives the grate plates 207 to vibrate, the material slowly slides onto the second set of grate plates 207. The stepped arrangement of the grate plates 207 improves the dispersion of the gypsum material and enhances heat dissipation. Side baffles 209 obstruct the flow between the grate plates 207. During this process, the cold air supply pump 205 delivers cold air into the air guide channel 201 through pipes, while the fan motor 203 drives the spiral-structured guide fan blades 204 to rotate along the cylinder channel 202, thus sending cold air through the exhaust grille 206 into the grate cooler body 1. Cold air is also injected from under the grate plates 207 to dissipate heat from the gypsum material until it is discharged from the outlet 4. After absorbing heat from the gypsum material on the grate 207, the hot air enters the waste heat recovery box 301 through the hot air guide port 302. First, it passes through the impurity filter screen 303, and then enters the honeycomb-shaped heat storage core 304. After being conducted by the heat storage core 304, the heat is absorbed by the heat absorption chamber 305, and the heat absorbed by the heat absorption chamber 305 is finally absorbed by the heat exchange tube 306, which then conducts the heat away. While the heat storage core 304 is absorbing heat, the cross-stacked guide plates 307 can effectively reduce the heat flow rate, allowing the heat storage core 304 to capture heat for a longer time and improve the heat recovery intensity. Finally, the gas that has undergone waste heat recovery is discharged from the exhaust port 308. This completes the process of using a waste heat recovery enhancement structure for a gypsum acid grate cooler.

[0041] 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 these 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 structure for enhancing waste heat recovery in a gypsum acid grate cooler, comprising a grate cooler body (1), characterized in that: The inner side of the grate cooler body (1) is equipped with a feeding and cooling assembly (2). An exhaust grille (206) is provided at the bottom of the inner side of the grate cooler body (1). A grate plate (207) is provided in the middle of the inner side of the grate cooler body (1). A vibration motor (208) is installed on the lower side of the grate plate (207). A side baffle (209) is provided on the right side of the vibration motor (208). A waste heat recovery assembly (3) is provided on the rear side of the grate cooler body (1). The waste heat recovery assembly (3) includes components installed on the grate cooler body (1). The waste heat recovery box (301) is located on the rear side. A hot air guide port (302) is provided at the lower end of the waste heat recovery box (301). A debris filter screen (303) is installed inside the hot air guide port (302). A heat storage core (304) is provided in the middle of the waste heat recovery box (301). A guide plate (307) is provided above the heat storage core (304). An exhaust port (308) is installed at the upper end of the waste heat recovery box (301). A discharge port (4) is provided on the right side of the grate cooler body (1).

2. The waste heat recovery and strengthening structure of the gypsum acid grate cooler according to claim 1, characterized in that, The feeding and cooling assembly (2) includes an air guide groove (201) welded to the lower side of the grate cooler body (1). A cylinder channel (202) is provided inside the lower side of the air guide groove (201). A fan motor (203) is installed on the left side of the cylinder channel (202). A guide fan blade (204) is installed on the inner side of the cylinder channel (202). A cold air supply pump (205) is connected to the outer side of the air guide groove (201). The guide fan blade (204) and the cylinder channel (202) are sleeved together. The guide fan blade (204) is rotated by the fan motor (203).

3. The waste heat recovery and strengthening structure of a gypsum acid grate cooler according to claim 2, characterized in that, The cold air supply pump (205) and the air guide trough (201) are connected by a pipe. The cold air supply pump (205) and the cylinder (202) form an air supply structure through the guide fan blade (204). The guide fan blade (204) has a spiral structure.

4. The waste heat recovery and strengthening structure of the gypsum acid grate cooler according to claim 1, characterized in that, The exhaust grille (206) and the air guide groove (201) are connected by a slot. The exhaust grille (206) and the grate plate (207) are set in a one-to-one correspondence. The exhaust grille (206) is set at a five-degree inclination. The exhaust grille (206) is arranged in a stepped manner. The air guide groove (201) injects cold air into the grate plate (207) from bottom to top through the exhaust grille (206).

5. The waste heat recovery and strengthening structure of a gypsum acid grate cooler according to claim 1, characterized in that, The debris filter (303) and the hot air guide port (302) are connected by a slot. The debris filter (303) is a stainless steel mesh structure. The waste heat recovery box (301) and the grate (207) are symmetrically arranged one-to-one.

6. The waste heat recovery and strengthening structure of a gypsum acid grate cooler according to claim 1, characterized in that, The heat storage core (304) is connected to a heat absorption chamber (305) in the middle slot. A heat exchange tube (306) is installed on the inner side of the heat absorption chamber (305). The heat storage core (304) has a honeycomb structure. Metal fins are distributed on the surface of the heat absorption chamber (305). The heat exchange tube (306) has a U-shaped structure. The heat storage core (304), the heat absorption chamber (305), and the heat exchange tube (306) constitute a heat recovery structure.

7. The waste heat recovery and strengthening structure of a gypsum acid grate cooler according to claim 1, characterized in that, The flow guide plate (307) and the waste heat recovery box (301) are welded together. The flow guide plate (307) has a wave-like structure and is arranged in a cross-stacked manner.

Images