Waste heat heating stock bin
By designing a waste heat heating silo to heat steel shot using waste heat from boiler exhaust gas, the problems of splashing and poor bonding of aluminum deoxidizer in steel shot during steelmaking were solved, achieving efficient energy utilization and uniform heating, and reducing energy consumption.
Patent Information
- Application Number
- CN202422518877.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Steel shot aluminum deoxidizer is prone to splashing and poor bonding during the steelmaking process, leading to increased energy consumption.
Design a waste heat heating silo that uses waste heat from boiler exhaust gas to heat steel shot through a spiral heating tube, and is equipped with a stirring device to ensure uniform heating.
It reduces energy consumption, improves steel shot heating efficiency, avoids splashing and poor bonding, and ensures the deoxidation effect of molten steel.
Smart Images
Figure CN223575201U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a waste heat recycling technical field especially a waste heat heating stock bin. BACKGROUND
[0002] In the metallurgical industry, steel sand aluminum is a kind of raw material with good deoxidizing effect and low cost, including metal aluminum block and a large amount of steel sand, wherein the steel sand is irregularly dispersed in the metal aluminum block. In the steelmaking process, when the steel sand aluminum is used as a deoxidizer, the egg-sized steel sand aluminum penetrates the protective slag layer on the surface of molten steel and enters the molten steel, and the internal metal aluminum rapidly reacts with oxygen in the molten steel at high temperature to achieve the purpose of deoxidization. At the same time, the dispersed steel sand can effectively solve the problem of premature melting and floating of the metal aluminum block, ensuring that the deoxidization of each layer of molten steel in the ladle is thorough.
[0003] However, the steel sand aluminum deoxidizer may have the following problems in the preparation process: 1. Water vapor on the surface of the steel sand may cause splashing when contacting the metal aluminum liquid, affecting production; 2. When the temperature difference between the steel sand and the metal aluminum liquid is large, the combination of the aluminum liquid and the steel sand is not tight, and it is easy to break in the production process. To avoid the above problems, the temperature of the steel sand needs to be increased, which increases energy consumption.
[0004] Therefore, it is necessary to provide a stock bin capable of heating steel sand, a metal particulate, using boiler tail gas waste heat. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a waste heat heating stock bin, which can heat steel sand, a metal particulate, using boiler tail gas waste heat, reducing energy consumption.
[0006] The utility model provides a waste heat heating stock bin, which comprises a stock bin body, a discharge port is arranged at the center of the bottom of the stock bin body, a top cover is arranged at the top of the stock bin body, a stirring device is further arranged in the stock bin body, a feeding port is arranged at one side of the top of the top cover, the side wall of the stock bin body comprises an inner container and an outer shell, a cavity is arranged between the inner container and the outer shell, a heating pipe is arranged in the cavity, the heating pipe spirally ascends along the inner container, the inlet of the heating pipe extends outward from one side of the bottom of the outer shell, the inlet of the heating pipe is connected with a waste heat source, and the outlet of the heating pipe extends outward from the top of the outer shell.
[0007] Preferably, the outlet of the heating pipe is connected with an induced draft fan.
[0008] Preferably, a control valve is arranged between the inlet of the heating pipe and the waste heat source.
[0009] Preferably, the ascending spiral angle of the heating pipe is 15-45°.
[0010] Preferably, a heat preservation layer is filled between the heating pipes in the cavity.
[0011] Preferably, the stirring device comprises a stirring motor arranged at the center of the top cover, an output shaft of the stirring motor is connected with a stirring shaft downward, and a plurality of stirring paddles are horizontally arranged on the side wall of the stirring shaft.
[0012] Preferably, the feeding port is connected with the output end of the bucket elevator through a feeding pipe.
[0013] Preferably, the upper part of the silo body is in a cylindrical shape, the lower part of the silo body is in a conical shape, the discharge port is arranged at the top of the cone, and a discharging valve is arranged on the discharge port.
[0014] Preferably, the silo body is internally provided with a material level sensor.
[0015] Preferably, the bottom of the outer wall of the silo body is connected with a support frame, and the support frame is arranged on the ground.
[0016] Beneficial effects:
[0017] The utility model discloses a heating pipe is arranged in the side wall of the silo body, adopts the waste heat source to provide heat for the heating pipe, and then heats the material in the silo body, the waste heat source reduces the energy consumption as the heat source, can recycle and utilize the waste heat, the stirring device is arranged in the silo body, can stir the material in the silo body, and ensures the uniform heating effect. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can also be obtained according to these drawings without creating creative labor.
[0019] Figure 1 It is the whole structure schematic diagram of the utility model.
[0020] Mark explanation:
[0021] 1-outer shell, 2-heating pipe, 3-heat preservation layer, 4-top cover, 5-ultrasonic material level sensor, 6-stirring motor, 7-inner container, 8-stirring shaft, 9-stirring paddle, 10-outlet, 11-feeding port, 12-induced draft fan, 13-discharging valve, 14-discharge port, 15-inlet, 16-support frame, 17-feeding pipe, 18-bucket elevator, 19-underground silo. Specific embodiment
[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example 1
[0026] like Figure 1 As shown, a waste heat heating silo includes a silo body. The sidewall of the silo body includes an inner liner 7 and an outer shell 1. A cavity is provided between the inner liner 7 and the outer shell 1. A heating pipe 2 is installed in the cavity. The heating pipe 2 spirals upward along the inner liner 7, and the spiral angle of the heating pipe 2 is 15-45°. This spiral angle range can maximize the utilization of the heat inside the heating pipe 2. The heating pipe 2 is in close contact with the inner liner 7, which can improve the heat transfer efficiency between the heating pipe 2 and the inner liner 7. The cavity is filled with an insulation layer 3 between the heating pipes 2. The insulation layer 3 is made of one of polyurethane foam, rock wool, or glass wool. The insulation layer 3 can concentrate the heat inside the heating pipe 2 to the inner liner 7, prevent heat from escaping from other parts of the heating pipe 2, and reduce energy waste. The outer shell 1 can also be made of insulation material.
[0027] The inlet 15 of the heating pipe 2 extends outward from one side of the bottom of the shell 1, and the inlet 15 of the heating pipe 2 is connected to a waste heat source. A control valve is arranged between the inlet 15 of the heating pipe 2 and the waste heat source, and the control valve can control the flow of waste heat steam into the heating pipe 2, thereby regulating the heating temperature. High-temperature waste gas is easily generated in the production process of the metallurgical industry. Smelting furnaces, heating furnaces, internal combustion engines, and boilers and other equipment will generate a large amount of waste gas containing high-temperature heat when in operation. The temperature of these waste gases is often high, and contains a large amount of heat energy, which is sufficient as a waste heat source, is easy to recover, and can meet the demand for preliminary heating of the material.
[0028] The outlet 10 of the heating pipe 2 extends outward from the top of the shell 1, and the outlet 10 of the heating pipe 2 is connected to an induced draft fan 12. The induced draft fan 12 can ensure smooth flow of high-temperature waste gas in the heating pipe 2, while controlling the residence time of the tail gas in the heating pipe 2, thereby improving the heat utilization rate of the tail gas.
[0029] The upper part of the silo body is cylindrical, and the lower part of the silo body is conical. The discharge port 14 is located at the top of the center cone at the bottom of the silo body, and the discharge port 14 is provided with a discharge valve 13. The conical shape of the bottom of the silo body can assist in discharging the material, making the material discharge more smoothly.
[0030] The top of the silo body is provided with a top cover 4, and one side of the top of the top cover 4 is provided with a feed inlet 11. The silo body is also provided with a stirring device, which includes a stirring motor 6 arranged at the center of the top cover 4. The output shaft of the stirring motor 6 is connected downward to a stirring shaft 8, and a plurality of stirring paddles 9 are horizontally arranged on the side wall of the stirring shaft 8. The stirring paddles 9 are staggered from top to bottom on the side wall of the stirring shaft 8, which can fully stir the material in the silo body and make it evenly heated.
[0031] A level sensor is arranged inside the silo body to timely sense the material level in the silo body and avoid the material level being too low. The level sensor can be one of a capacitive level sensor, a resistance level sensor, and an ultrasonic level sensor 5. When the level sensor is an ultrasonic level sensor 5, it is installed on the bottom of the top cover 4 away from the feed inlet 11, as shown in FIG. 5. Figure 1
[0032] The feeding port 11 is connected with the output end of the bucket elevator 18 through the feeding pipe 17, the output end of the bucket elevator 18 is downwardly inclined, so as to facilitate discharging, the bucket elevator 18 can lift the material on the ground to the feeding port 11, and the feeding can be simply and conveniently performed. The output end of the bucket elevator 18 is downwardly inclined, so as to facilitate discharging; the input end of the bucket elevator 18 is located on one side of the underground bunker 19, the bottom surface of the underground bunker 19 is inclined, the input end of the bucket elevator 18 is located on the lower side of the underground bunker 19, and the material in the underground bunker 19 is fed to the input end of the bucket elevator 18. The material level sensor and the bucket elevator 18 are electrically connected with the controller, when the material level sensor detects that the material level in the bunker body is low, the controller receives the signal and then opens the bucket elevator 18 to feed the material into the bunker body; when the material level sensor senses that the material level in the bunker body reaches a threshold value, the bucket elevator 18 is closed, and the feeding is stopped.
[0033] The bottom of the outer wall of the bunker body is connected with the support frame 16, the support frame 16 is arranged on the ground, and the support frame 16 can provide support for the bunker body.
[0034] Working process:
[0035] When the ultrasonic material level sensor 5 detects that the material level in the bunker body is low, the controller receives the signal and then opens the bucket elevator 18 to feed the material into the bunker body; when the ultrasonic material level sensor 5 senses that the material level in the bunker body reaches a threshold value, the bucket elevator 18 is closed, and the feeding is stopped.
[0036] The control valve is opened, the high-temperature waste gas spirally rises in the heating pipe 2, tightly contacts the inner container 7 through the heating pipe 2, provides heat for the bunker body, and after the heating is completed, the high-temperature waste gas is discharged through the action of the induced draft fan 12. During the heating process, the stirring motor 6 can be opened, and the material in the bunker body is stirred through the stirring paddle 9, so that the material is uniformly heated. The heat insulation layer 3 can reduce heat dissipation and guarantee the heating effect.
[0037] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A waste heat heated bin characterized by, The silo body is provided with a discharge port in the center of the bottom, a top cover on the top, a stirring device in the silo body, a feeding port on one side of the top of the top cover, an inner container and an outer shell in the sidewall of the silo body, a cavity between the inner container and the outer shell, a heating pipe in the cavity, the heating pipe spirally ascending along the inner container, a heating pipe inlet extending outward from one side of the bottom of the outer shell, the heating pipe inlet being connected with a waste heat source, a control valve between the heating pipe inlet and the waste heat source, a heating pipe outlet extending outward from the top of the outer shell, and the heating pipe outlet being connected with an induced draft fan.
2. The waste heat heated silo of claim 1, wherein, The ascending spiral angle of the heating pipe is 15-45°.
3. The waste heat heated silo of claim 1, wherein, The cavity is filled with a heat preservation layer between the heating pipes.
4. The waste heat heated silo of claim 1, wherein, The stirring device comprises a stirring motor arranged in the center of the top cover, a stirring shaft connected with the output shaft of the stirring motor downward, and a plurality of stirring paddles horizontally arranged on the sidewall of the stirring shaft.
5. The waste heat heated silo of claim 1, wherein, The feeding port is connected with the output end of a bucket elevator through a feeding pipe.
6. The waste heat heated silo of claim 1, wherein, The upper part of the silo body is in a cylindrical shape, the lower part of the silo body is in a conical shape, the discharge port is located at the top of the cone, and a discharge valve is arranged on the discharge port.
7. The waste heat heated silo of claim 1, wherein, A material level sensor is arranged in the silo body.
8. The waste heat heated silo of claim 1, wherein, A support frame is connected with the bottom of the outer wall of the silo body, and the support frame is arranged on the ground.