High-temperature solid particle waste heat recovery device

Abstract

According to the high-temperature solid particle waste heat recovery device provided by the utility model, high-temperature solid particles are fed into the heat exchange chamber (1) through the feeding hole (6), are uniformly scattered through the guide plate (4), and are in contact with the coil pipe (2) in the scattering process to realize heat transfer; high-temperature solid particles located at the bottom of the heat exchange chamber (1) can be lifted to the top of the heat exchange chamber (1) through rotation of the spiral elevator (3) and then evenly scattered through the flow guide plate (4), due to the fact that the heat exchange coil pipe (2) is arranged around the spiral elevator (3), heat exchange media are loaded in the heat exchange coil pipe (2), waste heat recovery of the high-temperature solid particles is achieved, and the heat exchange efficiency is improved. And the particles subjected to waste heat recovery are finally discharged through the discharge port (7). According to the high-temperature solid particle waste heat recovery device, solid particles can be evenly mixed, internal heat can be rapidly led out, and high-quality recovery of high-temperature particle waste heat is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature heat transfer technical field, especially relate to a high temperature solid particle waste heat recovery device. BACKGROUND

[0002] Industrial production will be accompanied by a large number of high-temperature solid particles and waste slag etc., which contain rich waste heat resources. Taking the steelmaking process as an example, 80-150 kg of steel slag is produced per ton of steel, and the temperature of the steel slag is as high as 1400-1600 DEG C, which is one of the important waste heat resources that can be recycled and utilized by steel enterprises. In order to improve the stability of the steel slag and facilitate the subsequent application of the tailings, the molten steel slag needs to be pre-crushed and granulated, and the granulated steel slag enters the heat exchanger for waste heat recovery. Therefore, designing a high-efficiency granulated steel slag particle waste heat recovery device is of great importance to improving the waste heat recovery efficiency.

[0003] In addition, ceramic particles and natural stone particle materials have been applied as promising heat transfer media in the third generation of solar thermal power generation. Compared with traditional molten salt, the use of solid particle materials can enable the solar thermal power generation system to operate at a higher temperature (>600 DEG C), thereby improving the power generation efficiency of the system and reducing the input cost. In this technical field, the design and optimization of the solid particle heat exchanger are also particularly important, as they are directly related to the energy utilization efficiency and economic benefits of the entire system. SUMMARY

[0004] Therefore, it is necessary to provide a high-temperature solid particle waste heat recovery device that can efficiently recover and utilize high-grade heat energy from high-temperature solid particles, in view of the technical defects that heat is difficult to export when high-temperature solid particles accumulate in large quantities.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] One of the purposes of the utility model is to provide a high-temperature solid particle waste heat recovery device, which comprises a heat exchange chamber (1), a heat exchange coil (2), a screw elevator (3), a guide plate (4), a driving motor (5), a feed inlet (6), and a discharge outlet (7). Wherein:

[0007] The heat exchange chamber (1) is used to provide a space for the high-temperature solid particle waste heat recovery operation.

[0008] The screw elevator (3) is arranged in the heat exchange chamber (1), and the rotation of the screw elevator (3) can lift the high-temperature solid particles at the bottom of the heat exchange chamber (1) to the top.

[0009] The heat exchange coil (2) is arranged around the screw elevator (3), and a heat exchange medium is loaded in the heat exchange coil (2).

[0010] The guide plate (4) is fixedly arranged at the top of the screw elevator (3), and the particles after waste heat recovery can be poured by the guide plate (4).

[0011] The feeding port (6) is arranged at the top of the heat exchange chamber (1), and the feeding port (6) is used for feeding high-temperature solid particles.

[0012] The discharging port (7) is arranged at the bottom of the heat exchange chamber (1), and the discharging port (7) is used for discharging the particles after waste heat recovery.

[0013] In some embodiments, the heat exchange coil (2) is made of heat-resistant and wear-resistant material, including but not limited to cast steel and stainless steel.

[0014] In some embodiments, the heat exchange coil (2) is single or multiple, and the heat exchange coil (2) is arranged in a spiral around the screw elevator (3).

[0015] In some embodiments, the heat exchange medium is a liquid metal, including at least one of bismuth and bismuth-based alloy, gallium and gallium-based alloy, or lead and lead-based alloy.

[0016] In some embodiments, the screw elevator (3) is connected with a driving motor (5), and the driving motor (5) can drive the screw elevator (3) to move.

[0017] In some embodiments, the driving motor (5) is arranged outside the heat exchange chamber (1) and is connected with the bottom shaft of the screw elevator (3).

[0018] In some embodiments, the high-temperature solid particle waste heat recovery device further comprises a movable trolley (8) connected with the discharging port (7), and the particles after waste heat recovery discharged through the discharging port (7) can be loaded into the movable trolley (8).

[0019] In some embodiments, the temperature of the high-temperature solid particles is 800-1200 DEG C.

[0020] The utility model discloses the above-mentioned technical scheme, and its beneficial effects are as follows:

[0021] The high-temperature solid particle waste heat recovery device provided by the utility model, through the rotation of the screw elevator (3) can lift the high-temperature solid particles at the bottom of the heat exchange chamber (1) to the top, since the heat exchange coil (2) is arranged around the screw elevator (3), the heat exchange coil (2) is loaded with heat exchange medium, thereby realizing the high-temperature solid particle waste heat recovery, the particles after waste heat recovery are scattered by the flow guide plate (4) and then discharged through the discharge port (7), the high-temperature solid particle waste heat recovery device provided by the utility model can realize the mixing of solid particles, rapidly export internal heat, and realizes the high-quality recovery of high-temperature particle waste heat; since water cooling is not needed, water resources are saved, the complicated steam dust removal system is saved, and the land occupation and investment cost are saved; compared with the direct water spraying cooling method, the safety is higher, explosion is not easy to occur, harmful gas generation is avoided, and the energy saving and environmental protection advantages are achieved; compared with other waste heat recovery devices, the structure is more simple and compact, the efficiency is higher, the operation is simple, the production implementation process is safe, the land occupation is small, and the utility model is suitable for wide application and is especially suitable for the transformation of old factory areas with limited space. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments of the utility model or the prior art description, obviously, the following described drawings are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0023] Figure 1 The structure diagram of the high-temperature solid particle waste heat recovery device provided by the embodiments of the utility model. DETAILED DESCRIPTION

[0024] The following will describe the embodiments of the utility model in detail, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0025] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified.

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0028] Please refer to Figure 1 The structure diagram of a high-temperature solid particle waste heat recovery device provided by the embodiment of the utility model, comprising: a heat exchange chamber (1), a heat exchange coil (2), a screw elevator (3), a guide plate (4), a driving motor (5), a feeding port (6) and a discharging port (7). The specific structure of each component is described in detail below.

[0029] The heat exchange chamber (1) is used to provide the space for the high-temperature solid particle waste heat recovery operation. The upper cover of the heat exchange chamber (1) is provided with a feeding port (6), and the high-temperature solid particles enter the heat exchange chamber (1) through the feeding port (6).

[0030] The heat exchange coil (2) is arranged around the screw elevator (3), and the heat exchange coil (2) is loaded with a heat exchange medium.

[0031] In some embodiments, the heat exchange coil (2) is made of heat-resistant and wear-resistant material, which includes but is not limited to cast steel and stainless steel material. It can be understood that, since the heat exchange coil (2) is made of heat-resistant and wear-resistant material, on the one hand, it has good weldability and is easy to form, and on the other hand, it has corrosion resistance to internal heat exchange medium and can meet the high-temperature condition.

[0032] In some embodiments, the heat exchange coil (2) is single or multiple, and the heat exchange coil (2) is arranged in a spiral shape around the screw elevator (3).

[0033] It should be noted that: the number of heat exchange coils (2) can be arranged according to the required heat exchange amount and the space of the heat exchange chamber to better meet the actual needs.

[0034] In some embodiments, the heat exchange medium is a liquid metal, and the liquid metal includes at least one of bismuth and bismuth-based alloy, gallium and gallium-based alloy or lead and lead-based alloy.

[0035] It can be understood that the liquid metal with high thermal conductivity is used as the heat exchange medium, so as to realize better heat exchange effect, and at the same time, the liquid metal can maintain single-phase state performance stability in the whole waste heat recovery process.

[0036] In some embodiments, the heat exchange medium can also be selected as water or carbon dioxide according to actual needs.

[0037] The screw elevator (3) is arranged in the heat exchange chamber (1), and high-temperature solid particles at the bottom of the heat exchange chamber (1) can be lifted to the top through rotation of the screw elevator (3).

[0038] In some embodiments, a driving motor (5) is connected to the shaft of the screw elevator (3), and the driving motor (5) can drive the screw elevator (3) to move.

[0039] Further, the driving motor (5) is arranged outside the heat exchange chamber (1) and is connected to the bottom of the screw elevator (3) through a shaft coupling.

[0040] The flow guide plate (4) is fixedly arranged at the top of the screw elevator (3), and the particles after waste heat recovery can be scattered by the flow guide plate (4).

[0041] It can be understood that the high-temperature solid particles at the bottom of the heat exchange chamber (1) are lifted to the top through rotation of the screw elevator (3), and waste heat recovery is performed with the heat exchange coil arranged around the screw elevator (3) during the lifting process, and the particles after waste heat recovery can be uniformly scattered to the bottom of the heat exchange chamber (1) by the flow guide plate (4).

[0042] The discharge port (7) is arranged at the bottom of the heat exchange chamber (1), and the discharge port (7) is used to discharge the particles after waste heat recovery.

[0043] It can be understood that the discharge port (7) is arranged at the bottom of the heat exchange chamber (1) and can be arranged in multiple.

[0044] In this embodiment, the high-temperature solid particle waste heat recovery device further comprises a movable trolley (8), and the movable trolley (8) is connected to the discharge port (7), and the particles after waste heat recovery discharged through the discharge port (7) can be loaded into the movable trolley (8).

[0045] It should be noted that the temperature of the high-temperature solid particles provided in the above embodiments of the utility model is 800-1200 DEG C, which can be steel slag particles or other solid high-temperature particles.

[0046] Please refer to Figure 1The high-temperature particles fall into the heat exchange chamber (1) from the opening, and exchange heat with the heat exchange medium in the heat exchange coil (2) during falling, and after falling to the bottom, the motor (5) is opened to drive the screw elevator (3) to move, the screw elevator (3) lifts the high-temperature particles after the first heat exchange to the top, and uniformly falls on the heat exchange chamber (1) through the guide plate (4), and exchanges heat with the heat exchange medium in the heat exchange coil (2) for the second time, and the process is repeated until the high-temperature particles are reduced to the target temperature, and the discharge port (7) is opened, and the particles after cooling are discharged to the movable trolley (8) for subsequent treatment.

[0047] The high-temperature solid particle waste heat recovery device and the waste heat recovery method can realize uniform mixing of solid particles, rapid export of internal heat, and high-quality recovery of high-temperature particle waste heat.

[0048] It can be understood that the technical features of the above-described embodiments can be combined in any manner, and in order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0049] The above is only a preferred embodiment of the present application, only the technical principle of the present application is specifically described, these descriptions are only for explaining the principle of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanation here, any modification, equivalent replacement and improvement within the spirit and principle of the present application, and other specific embodiments of the present application which can be thought by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A high-temperature solid particle waste heat recovery device, characterized in that, The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device.

2. The high temperature solids waste heat recovery device of claim 1, wherein, The application relates to a high-temperature solid particle waste heat recovery device.

3. The high temperature solids afterheat recovery device according to claim 1, wherein The application relates to a high-temperature solid particle waste heat recovery device.

4. The high temperature solids waste heat recovery device of claim 1, wherein, The application relates to a high-temperature solid particle waste heat recovery device.

5. The high temperature solids waste heat recovery device of claim 1, wherein, The application relates to a high-temperature solid particle waste heat recovery device.

6. The high temperature solids heat recovery device of claim 5, wherein, The application relates to a high-temperature solid particle waste heat recovery device.

7. The high temperature solids heat recovery device of claim 1, wherein, The application relates to a high-temperature solid particle waste heat recovery device.

8. The high temperature solids waste heat recovery device of claim 1, wherein, The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. The application relates to a high-temperature solid particle waste heat recovery device. 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