CN218510848U

CN218510848U - Industrial high-temperature waste heat conversion device

Info

Publication number: CN218510848U
Application number: CN202222396262.7U
Authority: CN
Inventors: 李靖; 庞赟佶; 钟涛; 朱依菲; 吴枭; 王子麒
Original assignee: Inner Mongolia University of Science and Technology
Current assignee: Inner Mongolia University of Science and Technology
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-02-21
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses an industry high temperature waste material waste heat conversion equipment belongs to industry waste heat utilization field, and through the convection current from bottom to top in the device, the atomized water injection of cooperation simultaneously cools down high temperature waste material in the waste truck, and the atomized water becomes high temperature vapor, moves up along with the updraft, for setting up in the thermoelectric generation piece hot junction at heat transfer room top provides the heat, and the cold junction of thermoelectric generation piece passes through the water-cooling wall cooling, forms stable temperature difference, realizes thermoelectric conversion.

Description

Industrial high-temperature waste heat conversion device

Technical Field

The utility model belongs to industry waste heat utilization field, in particular to industry high temperature waste material waste heat conversion equipment.

Background

At present, rapid development of industrialization is accompanied by generation and discharge of various waste heat. In the industries of steel, metallurgy, coking, chemical industry and the like, a large amount of high-temperature solid materials such as steel slag, slag and the like can be produced in the daily industrial production process. The temperature of the high-temperature solid materials is usually between 300 and 800 ℃, and the temperature of some high-temperature solid materials can even reach about 1000 ℃. In order to facilitate the transportation and subsequent treatment of the solid materials, the high-temperature solid materials need to be cooled to normal temperature, and a large amount of waste heat of the high-temperature solid materials cannot be utilized, so that the waste of resources is realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an industry high temperature waste material waste heat conversion equipment solves the problem of current high temperature solid material waste heat utilization, provides an at least waste heat utilization's device.

The utility model adopts the technical scheme as follows: an industrial high-temperature waste heat conversion device comprises a heat exchange chamber and a waste car; the top of the heat exchange chamber is provided with an air outlet, the bottom of the heat exchange chamber is provided with an air inlet, and convection from bottom to top is formed inside the heat exchange chamber; the top of the heat exchange chamber is provided with a temperature difference power generation unit, the hot end surface of the temperature difference power generation unit faces the inside of the heat exchange chamber, and the cold end surface of the temperature difference power generation unit is provided with a water cooling unit; the waste material vehicle comprises a box body, the top of the box body is provided with an opening, and a bottom plate is a hollow plate and is used for containing blocky high-temperature waste materials; the heat exchange chamber is provided with an inlet for the waste car to enter into the heat exchange chamber; the side wall of the heat exchange chamber is provided with an atomizing nozzle which is connected with atomizing equipment and used for spraying atomized water into the waste car box body. Through above-mentioned device, convert waste heat into electric energy.

In an exemplary embodiment of the present disclosure, the heat exchange chamber is a sandwich structure, and a water wall is installed in the sandwich structure.

In an exemplary embodiment of the present disclosure, a chimney or a fan is installed at an air outlet on the top of the heat exchange chamber to realize bottom-to-top convection, wherein the chimney is installed to form natural convection.

In an exemplary embodiment of the present disclosure, one side plate of the box body is also a door plate of the heat exchange chamber inlet, and the door plate is larger than the heat exchange chamber inlet; the heat exchange chamber is used for covering the inlet of the heat exchange chamber and reducing heat loss from the inlet. Furthermore, a rotatable pressing plate is arranged above the inlet of the heat exchange chamber, and the pressing plate rotates downwards to press the outer surface of the door plate of the box body after the door plate on the box body covers the inlet; the inlet is further sealed through the structure, and the position of the waste car is fixed.

In an exemplary embodiment of the disclosure, a funnel-shaped diffusion cover is arranged below the hollowed-out plate at the bottom of the box body, the diffusion cover protrudes downwards, and an air inlet is formed in the center of the bottom.

In an exemplary embodiment of the disclosure, a water circulation heat exchange unit is arranged below an air outlet of the heat exchange chamber and above the waste material vehicle, so that heat absorption is realized through the device, and waste heat is converted into hot water for use.

In an exemplary embodiment of the present disclosure, the water-circulating heat exchange unit includes finned tubes and coils, and inside is cooling water that circulates.

The beneficial effects of the utility model reside in that: the utility model provides an industry high temperature waste material waste heat conversion equipment through the convection current from bottom to top, cooperates the atomized water injection simultaneously, cools down to high temperature waste material in the waste material car, and the atomized water becomes high temperature vapor, along with updraft upward movement, for setting up in the thermoelectric generation piece hot junction at heat transfer roof portion provides the heat, and the cold junction of thermoelectric generation piece passes through the water-cooling wall cooling, forms stable temperature difference, realizes thermoelectric conversion.

In addition, heat exchange is carried out between the high-temperature steam and the coil pipe and the finned pipe in the rising process; the water heated in the finned tube and the coil is conveyed to a hot water tank for standby, and provides domestic hot water in summer and domestic hot water or heat supply in winter.

Drawings

Fig. 1 is a perspective view of an embodiment of a waste heat conversion device.

FIG. 2 is a perspective view of the construction of the waste car of the embodiment.

Fig. 3 is a bottom view of the heat exchange chamber of fig. 1.

Fig. 4 is a schematic view of the internal structure of the heat exchange chamber of fig. 1.

FIG. 5 is a perspective view of the finned tube and coil.

FIG. 6 is an embodiment waste heat conversion device airflow diagram.

FIG. 7 is a schematic view of the gas flow at the finned tube.

FIG. 8 is a schematic view of a thermoelectric generation chip.

In the figure: the waste material recycling system comprises a heat exchange chamber 1, an air outlet 101, a limiting mechanism 102, a waste material vehicle 2, a box body 201, a hollowed-out plate 202, a door plate 203, a diffusion cover 204, a water-cooled wall 3, a chimney 4, an atomizing nozzle 5, a thermoelectric generation piece 6, a finned tube 7, a coil 8 and a temperature sensor 9.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to 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", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Examples

Fig. 1 is a perspective view showing an appearance of an industrial high-temperature waste heat conversion device according to the present embodiment; as shown in the figure, the apparatus comprises a heat exchange chamber 1 and a waste car 2; in the embodiment, the heat exchange chamber 1 is box-shaped and made of high-temperature resistant materials, for example, double-layer stainless steel is used as the inner wall and the outer wall, and an interlayer is arranged in the middle for installing the water-cooled wall 3; an air outlet 101 is formed in the center of the top of the heat exchange chamber 1, a chimney 4 is connected to the air outlet 101, and air in the heat exchange chamber 1 is conveyed to the external environment through a chimney effect; or a fan is arranged at the air outlet 101 at the top of the heat exchange chamber 1 to perform forced convection. The bottom of the heat exchange chamber 1 is away from the ground and is opened (without a bottom plate) to form an air inlet; or the bottom of the heat exchange chamber 1 falls to the ground, and the bottom of the side wall is provided with a plurality of air inlets; the air inlet at the bottom of the heat exchange chamber 1 and the air outlet 101 at the top form a convection from bottom to top. One side of the heat exchange chamber 1 (the right side of the heat exchange chamber 1 in the figure) is provided with an inlet for pushing the waste car 2 into the heat exchange chamber 1.

As shown in fig. 2, which is a structural perspective view of the waste car 2, the waste car 2 includes a box 201, the box 201 is open at the top, and a hollow plate 202 is used as a bottom plate for containing the massive high-temperature waste material and allowing air to enter the box 201 from the gap of the hollow plate 202 and then to pass through the gap of the massive high-temperature waste material and be discharged from the top opening. In this embodiment, the right side plate of the box 201 is also the door panel 203 of the right inlet of the heat exchange chamber 1, and the right side plate of the box 201 is slightly larger than the right inlet of the heat exchange chamber 1, and can cover the right inlet of the heat exchange chamber 1. Limiting mechanism 102 can be further additionally arranged at the inlet on the right side of heat exchange chamber 1, and the right side plate of box body 201 is temporarily fixed at the inlet on the right side of heat exchange chamber 1 and is sealed, so that the discharge of hot gas from the inlet side is reduced. As shown in fig. 1, in this embodiment, the left, right and upper edges of the right side plate of the box 201 are provided with sealing strips, two rotatable pressing plates are arranged above the right side inlet of the heat exchange chamber 1, and after the right side plate of the box 201 covers the inlet, the pressing plates rotate downwards to press the outer surface of the right side plate of the box 201 to fix the position of the pressing plates. In addition, wheels are arranged at the bottom of the box body 201, and a handle is arranged on a right side plate cover of the box body 201 and used for pushing.

As shown in fig. 2, a funnel-shaped diffusion cover 204 is further added below the hollow plate 202 at the bottom of the box 201 of the waste car 2, the diffusion cover 204 protrudes downwards, and a circular air inlet is formed in the center of the bottom; as shown in fig. 3, after the waste car 2 completely enters the heat exchange chamber 1, the side surface of the box 201 of the waste car 2 is close to the inner wall of the heat exchange chamber 1, and the air inlet at the center of the bottom of the diffusion cover 204 is located at the center of the heat exchange chamber 1 and is opposite to the air outlet 101 up and down; outside air enters the heat exchange chamber 1, then enters the box body 201 of the waste car 2 from the diffusion cover 204 in the center, flows through the gaps of the blocky high-temperature waste to take away heat, and continuously rises to be discharged from the air outlet 101 at the top of the heat exchange chamber 1.

Fig. 4 is a schematic diagram of the internal structure of the heat exchange chamber 1 in fig. 1; as shown in the figure, the side wall of the heat exchange chamber 1 is provided with an atomizing nozzle 5, and the atomizing nozzle 5 is connected with atomizing equipment (existing equipment, not shown in the figure) for spraying atomized water into the box 201 of the waste car 2; the atomized water contacts with the high-temperature block-shaped material to rapidly cool the high-temperature block-shaped material and transfer heat to the water vapor; the water vapor flows with the ascending air flow to the air outlet 101 at the top of the heat exchange chamber 1. In a preferred embodiment, the height of the heat exchange chamber 1 is twice the height of the waste car 2, the atomizer 5 is arranged at the middle upper part of the side wall of the heat exchange chamber 1, and the atomizer 5 is arranged obliquely downwards, i.e. the outlet end towards one side of the waste car 2 is lower.

The top of heat transfer chamber 1 is equipped with a plurality of semiconductor thermoelectric generation pieces 6, and thermoelectric generation piece 6's hot junction is down, and thermoelectric generation piece 6's cold junction (upper surface) sets up water-cooling wall 3, and water-cooling wall 3 comprises several rows of steel pipes in this embodiment, and inside is flowing water. Thermoelectric conversion is realized through the thermoelectric generation piece 6, and the cold end heat of the thermoelectric generation piece is taken away by cooling water in the water cooling wall 3 in the power generation process, so that the temperature of the cold end is reduced.

In addition, a stainless steel finned tube 7 and a coil 8 are further additionally arranged below an air outlet 101 of the heat exchange chamber 1 and above the waste car 2, the stainless steel finned tube 7 and the coil 8 are arranged in a snake shape, as shown in a three-dimensional structure diagram of fig. 5, and cooling water flows in the finned tube 7 and the coil 8 in a circulating manner; the rising high-temperature steam exchanges heat with the finned tube 7 and the coil 8, and the heated cooling water can be used as domestic water or used for heating in winter in a factory.

Further, a temperature sensor 9 is arranged at the air outlet 101 and used for monitoring the temperature at the air outlet 101 in real time, the temperature sensor 9 is connected with a controller, such as a PLC, and the controller is connected with the atomization device.

The conventional method of use of the above device is as follows:

firstly, as shown in fig. 6, high-temperature massive waste is put into a waste car 2 and sent into a heat exchange chamber 1, when a temperature sensor 9 arranged at an air outlet 101 of the heat exchange chamber 1 detects that the air temperature is higher than 200 ℃, atomizing equipment is started through a controller, water in a semi-atomized state is sprayed to the high-temperature material in the waste car 2 through an atomizing nozzle 5, and the temperature of the high-temperature massive waste at 800-1000 ℃ is firstly reduced to about 600 ℃; the atomized water contacts with the high-temperature massive waste to rapidly cool the waste and transfer heat to the water vapor. As shown in fig. 7, heat exchange with the coil pipe 8 and the fin tube 7 is performed during the rising of the high-temperature steam. As shown in fig. 8, the hot end of the thermoelectric generation sheet 6 at the top of the heat exchange chamber 1 obtains heat through convection heat exchange, and the cold end is cooled through the water-cooled wall 3 to form a stable temperature difference, so that thermoelectric conversion is realized. When the temperature sensor 9 detects that the air temperature at the air outlet is lower than 200 ℃, the atomization equipment is stopped by the controller; the stage utilizes the waste heat of the materials by air convection. The water heated in the finned tube 7 and the coil 8 is conveyed to a hot water tank for standby, domestic hot water is provided in summer, domestic hot water is provided in winter or heat supply is provided, and air after heat exchange is exhausted through an air outlet 101 in the upper part of the heat exchange chamber 1. When the temperature sensor 9 detects that the temperature of the exhaust port is below 80 ℃, the waste car 2 is sent out of the heat exchange chamber 1.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The device for converting the waste heat of the industrial high-temperature waste is characterized by comprising a heat exchange chamber (1) and a waste car (2); the top of the heat exchange chamber (1) is provided with an air outlet (101), the bottom of the heat exchange chamber is provided with an air inlet, and convection from bottom to top is formed inside the heat exchange chamber; the top of the heat exchange chamber (1) is provided with a temperature difference power generation unit, the hot end surface of the temperature difference power generation unit faces the inside of the heat exchange chamber (1), and the cold end surface is provided with a water cooling unit; the waste material vehicle (2) comprises a box body (201), the top of the box body (201) is open, and a bottom plate is a hollow plate (202) and is used for containing blocky high-temperature waste materials; the heat exchange chamber (1) is provided with an inlet for the waste material vehicle (2) to enter the heat exchange chamber (1); the side wall of the heat exchange chamber (1) is provided with an atomizing nozzle (5), and the atomizing nozzle (5) is connected with atomizing equipment and used for spraying atomized water into the box body (201) of the waste car (2).

2. The industrial high-temperature waste residual heat conversion device according to claim 1, characterized in that the heat exchange chamber (1) is of a sandwich structure, and a water cooling wall (3) is installed in the sandwich structure.

3. The industrial high-temperature waste residual heat conversion device is characterized in that a chimney (4) or a fan is installed at an air outlet (101) at the top of the heat exchange chamber (1).

4. The industrial high-temperature waste residual heat conversion device according to the claim 1, characterized in that one side plate of the box body (201) is also a door plate (203) of the inlet of the heat exchange chamber (1), and the door plate (203) is larger than the inlet of the heat exchange chamber (1).

5. The industrial high-temperature waste residual heat conversion device is characterized in that a rotatable pressure plate is arranged above an inlet of the heat exchange chamber (1), and after the inlet is covered by a door plate (203) on the box body (201), the pressure plate is rotated downwards to press the outer surface of the door plate (203) of the box body (201).

6. The waste heat conversion device for industrial high-temperature waste is characterized in that a funnel-shaped diffusion cover (204) is arranged below a hollow plate (202) at the bottom of the box body (201), the diffusion cover (204) protrudes downwards, and an air inlet is formed in the center of the bottom.

7. The industrial high-temperature waste heat conversion device according to any one of claims 1 to 6, characterized in that a water circulation heat exchange unit is arranged below the air outlet (101) of the heat exchange chamber (1) and above the waste car (2).

8. The industrial high-temperature waste heat conversion device according to claim 7, characterized in that the water circulation heat exchange unit comprises finned tubes (7) and coil tubes (8), and cooling water flows in a circulation mode inside.