Heat removal device for rolling high-temperature steel slag

Abstract

The utility model relates to a heat removal device for rolling high-temperature steel slag, which is characterized in that two ends of the top of a heat exchange body are respectively and fixedly connected with platforms on two sides of a roller press through connecting beams, a heat exchange medium is arranged in the heat exchange body, and a front contact body is fixedly connected with the bottom surface of the heat exchange body; the front contact body comprises a plurality of contact plates which are vertically arranged and arranged in parallel, and the heat exchange body and the contact plates make contact with high-temperature steel slag at the bottom of the roller press. The connecting beams are arranged on the two sides or one side of the roller press, the front contact body and the heat exchange body make contact with steel slag, heat in the steel slag is brought out through the heat exchange medium, heat exchange is conducted at the cold end of the heat exchange medium, then the steel slag circularly enters the heat exchange body, and the heat exchange medium is basically not consumed. A steam generator or power generation equipment and the like can be arranged at the cold end, steam or power generation can be generated, efficient recovery and utilization of heat energy are achieved, and the problem that waste heat is difficult to utilize during steel slag treatment at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel slag treatment, in particular to a heat extraction device used for high-temperature steel slag roller pressing. Background Art

[0002] At present, the market share of steel slag roller processing technology is relatively high in the market. This process can quickly cool and crush steel slag. It can cool 1300℃ steel slag to 600℃ in about 30 minutes, which greatly improves the efficiency of steel slag treatment. This process usually adopts water quenching method. Although it can achieve rapid cooling of steel slag, the heat of steel slag cannot be recovered and utilized. At the same time, water spray cooling produces a large amount of dust-containing steam, which seriously pollutes the environment. It needs to be treated by a wet dust removal system. The public auxiliary system is complicated and the investment cost is high.

[0003] Therefore, it is necessary to provide a heat extraction device for high-temperature slag roller pressing, which can be used in conjunction with a slag roller press to replace the slag water spray cooling and recover the high-grade waste heat contained in the slag. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a heat extraction device for high-temperature steel slag roller pressing. By arranging a heat exchanger and a front contact body in contact with the steel slag, the heat in the steel slag is exchanged with the cold end using a heat exchange medium, which can not only quickly cool the steel slag, but also recover the high-grade waste heat contained in the steel slag.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A heat extraction device for roller pressing of high-temperature steel slag comprises a heat exchanger, a front contact body and a connecting beam. The top two ends of the heat exchanger are respectively fixedly connected to the platforms on both sides of the roller press through the connecting beam. A heat exchange medium is arranged in the heat exchanger. The front contact body is fixedly connected to the bottom surface of the heat exchanger. The front contact body comprises a plurality of contact plates arranged vertically and in parallel. The heat exchanger and the contact plates are in contact with the high-temperature steel slag at the bottom of the roller press. The connecting beam forms an integrated structure between the entire heat extraction device and the roller press, so that the heat extraction device can move with the roller press. The heat exchanger conducts the heat in the steel slag to the heat exchange medium, and takes the heat in the steel slag away through the heat exchange medium. The front contact body can be inserted into the steel slag to increase the heat exchange area with the steel slag, and also plays the role of loosening the steel slag and accelerating the cooling rate of the steel slag.

[0007] Preferably, the heat exchanger is a rectangular cavity structure, and a heat exchange medium inlet and a heat exchange medium outlet are respectively provided at two ends of the heat exchanger.

[0008] Preferably, the heat extraction device further comprises a heat exchange medium inlet pipe and a heat exchange medium outlet pipe, wherein the heat exchange medium inlet pipe is connected to the heat exchange medium inlet, and the heat exchange medium outlet pipe is connected to the heat exchange medium outlet. The heat exchange medium inlet pipe and the heat exchange medium outlet pipe play the role of conveying the heat exchange medium, and the low-temperature heat exchange medium enters the heat exchange body from the heat exchange medium inlet pipe through the heat exchange medium inlet. After the heat exchange is completed, the high-temperature heat exchange medium flows out through the heat exchange medium inlet to the heat exchange medium outlet pipe to take out the heat, and after heat exchange at the cold end of the heat exchange medium, it is recirculated into the heat exchange body.

[0009] Preferably, a heat exchanger baffle is provided in the cavity of the heat exchanger, and the heat exchanger baffle includes a left baffle and a right baffle; the top, bottom and left side ends of the left baffle are respectively fixedly connected to the top wall, bottom wall and left side wall of the heat exchanger, and a medium passage port is formed between the right side end of the left baffle and the right side wall of the heat exchanger; the top, bottom and right side ends of the right baffle are respectively fixedly connected to the top wall, bottom wall and right side wall of the heat exchanger, and a medium passage port is formed between the left side end of the right baffle and the left side wall of the heat exchanger.

[0010] Preferably, the left baffle and the right baffle have the same shape and size, and are spaced apart from each other. The spaced apart arrangement of the left baffle and the right baffle can form an S-shaped flow path for the heat exchange medium in the heat exchange body, thereby increasing the flow area of ​​the heat exchange medium.

[0011] Preferably, the contact plate is in a trapezoidal, triangular, rectangular or toothed shape, and is a wear-resistant and high-temperature resistant metal plate. The contact plate is designed to increase the heat exchange area and prevent material jamming, and specific parameters can be selected according to actual conditions.

[0012] Preferably, the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are made of heat-resistant, wear-resistant, corrosion-resistant and weldable materials.

[0013] Preferably, the heat exchange medium inlet pipe and the heat exchange medium outlet pipe are made of cast steel or stainless steel. The cast steel material can be selected from ZG270-500, ZG310-570 or ZG340-640, etc., and the stainless steel material can be selected from 304, 309, 321, 316, T91, 408, 409, 410, 440 and other stainless steel models.

[0014] Preferably, the heat exchange medium is a high temperature resistant fluid, such as molten salt or alloy, which can obtain high-quality heat and improve the recovery value of waste heat.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model discloses a heat extraction device for high-temperature slag roller pressing. The heat extraction device is arranged on both sides or one side of the roller press through a connecting beam, contacts the slag through a front contact body and a heat exchange body, takes out the heat in the slag through a heat exchange medium, and recirculates into the heat exchange body after heat exchange at the cold end of the heat exchange medium, and the heat exchange medium is basically not consumed. The heat extraction device changes the current cooling method of slag, and can eliminate water spray cooling during roller pressing, so that the slag roller pressing is changed to dry processing, which saves water resources, changes the form of dust removal, significantly reduces the cost of the dust removal system, reduces the load of the water treatment system and the electrical system, and significantly reduces the overall investment of the project. The slag can be quickly cooled and the high-grade waste heat contained in the slag can be recovered. The cold end can be a steam generator or power generation equipment, etc., which can generate steam or generate electricity, realize the efficient recovery and utilization of thermal energy, and solve the problem that the waste heat is difficult to utilize during the current slag treatment.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, and at the same time to make the above and other purposes, technical features and advantages of the utility model easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 The utility model shows a schematic structural diagram of a heat extraction device for high-temperature slag roller pressing and a roller press after being assembled.

[0020] Figure 2 A schematic diagram of the cross-sectional structure in the main view direction of a heat exchanger of a heat extraction device for high-temperature slag roller pressing according to the utility model is shown.

[0021] Figure 3 A schematic diagram of the cross-sectional structure in a top view of a heat exchanger of a heat extraction device for high-temperature slag roller pressing according to the utility model is shown.

[0022] Description of main reference numerals:

[0023] 1-heat exchange body, 11-heat exchange medium inlet, 12-heat exchange medium outlet, 13-heat exchange body baffle, 2-front contact body, 3-connecting beam, 4-roller press, 5-heat exchange medium inlet pipe, 6-heat exchange medium outlet pipe. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0025] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0026] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0027] like Figure 1-Figure 3 As shown, a heat extraction device for high-temperature steel slag roller pressing comprises a heat exchanger 1, a front contact body 2 and a connecting beam 3. The top two ends of the heat exchanger 1 are fixedly connected to the platforms on both sides of the roller press 4 through the connecting beam 3. The heat exchanger 1 is provided with a heat exchange medium. The front contact body 2 is fixedly connected to the bottom surface of the heat exchanger 1. The front contact body 2 comprises a plurality of contact plates arranged vertically and in parallel. The heat exchanger 1 and the contact plates are in contact with the high-temperature steel slag at the bottom of the roller press 4. The connecting beam 3 makes the entire heat extraction device and the roller press 4 form an integrated structure, so that the heat extraction device can move with the roller press 4. The heat exchanger 1 conducts the heat in the steel slag to the heat exchange medium, and takes away the heat in the steel slag through the heat exchange medium. The front contact body 2 can be inserted into the steel slag to increase the heat exchange area with the steel slag, and also plays the role of loosening the steel slag and accelerating the cooling rate of the steel slag.

[0028] Preferably, the heat exchanger 1 is a rectangular cavity structure, and a heat exchange medium inlet 11 and a heat exchange medium outlet 12 are respectively provided at two ends of the heat exchanger 1 .

[0029] Preferably, the heat extraction device further comprises a heat exchange medium inlet pipe 5 and a heat exchange medium outlet pipe 6, wherein the heat exchange medium inlet pipe 5 is connected to the heat exchange medium inlet 11, and the heat exchange medium outlet pipe 6 is connected to the heat exchange medium outlet 12. The heat exchange medium inlet pipe 5 and the heat exchange medium outlet pipe 6 play the role of conveying the heat exchange medium, and the low-temperature heat exchange medium enters the heat exchange body 1 from the heat exchange medium inlet pipe 5 through the heat exchange medium inlet 11. After the heat exchange is completed, the high-temperature heat exchange medium flows out through the heat exchange medium inlet 11 to the heat exchange medium outlet pipe 6 to take out the heat.

[0030] Preferably, a heat exchanger baffle 13 is provided in the cavity of the heat exchanger 1, and the heat exchanger baffle 13 includes a left baffle and a right baffle; the top, bottom and left sides of the left baffle are respectively fixedly connected to the top wall, bottom wall and left side wall of the heat exchanger 1, and a medium passage opening is formed between the right side end of the left baffle and the right side wall of the heat exchanger 1; the top, bottom and right sides of the right baffle are respectively fixedly connected to the top wall, bottom wall and right side wall of the heat exchanger 1, and a medium passage opening is formed between the left side end of the right baffle and the left side wall of the heat exchanger 1.

[0031] Preferably, the left baffle and the right baffle have the same shape and size, and are spaced apart from each other. The spaced apart arrangement of the left baffle and the right baffle can form an S-shaped flow path for the heat exchange medium in the heat exchange body 1, thereby increasing the flow area of ​​the heat exchange medium.

[0032] Preferably, the contact plate is in a trapezoidal, triangular, rectangular or toothed shape, and is a wear-resistant and high-temperature resistant metal plate. The contact plate is designed to increase the heat exchange area and prevent material jamming, and specific parameters can be selected according to actual conditions.

[0033] Preferably, the heat exchange medium inlet pipe 5 and the heat exchange medium outlet pipe 6 are made of heat-resistant, wear-resistant, corrosion-resistant and weldable materials.

[0034] Preferably, the heat exchange medium inlet pipe 5 and the heat exchange medium outlet pipe 6 are made of cast steel or stainless steel. The cast steel material can be selected from ZG270-500, ZG310-570 or ZG340-640, etc., and the stainless steel material can be selected from 304, 309, 321, 316, T91, 408, 409, 410, 440 and other stainless steel types.

[0035] Preferably, the heat exchange medium is a high temperature resistant fluid, such as molten salt or alloy, which can obtain high-quality heat and improve the recovery value of waste heat.

[0036] When the heat extraction device of the utility model is in use, the heat extraction device moves together with the roller press 4, the roller press 4 plays the role of crushing the steel slag, and the heat extraction device plays the role of cooling the steel slag. The low-temperature heat exchange medium enters the heat exchange body 1 from the heat exchange medium inlet 11 through the heat exchange medium inlet pipe 5, the heat exchange body 1 and the front contact body 2 are in contact with the steel slag, and the heat in the steel slag is transferred to the heat exchange medium, and the heat exchange medium quickly takes away the heat in the steel slag, and releases the heat to the cold end from the heat exchange medium outlet 12 through the heat exchange medium outlet pipe 6, forming a heat exchange cycle. During the steel slag rolling process, the steel slag is cooled by the heat exchange medium, and there is no need to spray water to cool the steel slag.

[0037] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments should fall within the scope of protection of the utility model.

Claims

1. A heat extraction device for high-temperature slag roller pressing, characterized in that: The invention comprises a heat exchanger (1), a front contact body (2) and a connecting beam (3), wherein the top two ends of the heat exchanger (1) are fixedly connected to the platforms on both sides of the roller press (4) through the connecting beam (3), a heat exchange medium is arranged in the heat exchanger (1), the front contact body (2) is fixedly connected to the bottom surface of the heat exchanger (1), and the front contact body (2) comprises a plurality of contact plates arranged vertically and in parallel, and the heat exchanger (1) and the contact plates are in contact with the high-temperature steel slag at the bottom of the roller press (4).

2. The heat extraction device for high-temperature slag roller pressing according to claim 1, characterized in that: The heat exchanger (1) is a rectangular cavity structure, and a heat exchange medium inlet (11) and a heat exchange medium outlet (12) are respectively provided at two ends of the heat exchanger (1).

3. The heat extraction device for high-temperature slag roller pressing according to claim 2, characterized in that: The heat extraction device further comprises a heat exchange medium inlet pipe (5) and a heat exchange medium outlet pipe (6), wherein the heat exchange medium inlet pipe (5) is connected to the heat exchange medium inlet (11), and the heat exchange medium outlet pipe (6) is connected to the heat exchange medium outlet (12).

4. The heat extraction device for high-temperature slag roller pressing according to claim 3, characterized in that: A heat exchanger baffle (13) is provided in the cavity of the heat exchanger (1), and the heat exchanger baffle (13) comprises a left baffle and a right baffle; The top end, bottom end and left side end of the left baffle are respectively fixedly connected to the top wall, bottom wall and left side wall of the heat exchanger (1), and a medium passage opening is formed between the right side end of the left baffle and the right side wall of the heat exchanger (1); The top end, bottom end and right side end of the right baffle are respectively fixedly connected to the top wall, bottom wall and right side wall of the heat exchanger (1), and a medium passage opening is formed between the left side end of the right baffle and the left side wall of the heat exchanger (1).

5. The heat extraction device for high-temperature slag roller pressing according to claim 4, characterized in that: The left baffle plate and the right baffle plate have the same shape and size, and are spaced apart from each other.

6. The heat extraction device for high-temperature slag roller pressing according to claim 1, characterized in that: The contact plate is in a trapezoidal, triangular, rectangular or toothed shape, and is a wear-resistant and high-temperature-resistant metal plate.

7. The heat extraction device for high-temperature slag roller pressing according to claim 3, characterized in that: The heat exchange medium inlet pipe (5) and the heat exchange medium outlet pipe (6) are made of heat-resistant, wear-resistant, corrosion-resistant and weldable materials.

8. The heat extraction device for high-temperature slag roller pressing according to claim 7, characterized in that: The heat exchange medium inlet pipe (5) and the heat exchange medium outlet pipe (6) are made of cast steel or stainless steel.

9. The heat extraction device for high-temperature slag roller pressing according to claim 1, characterized in that: The heat exchange medium is a high temperature resistant fluid.

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