Heat exchanger device used in sulfuric acid preparation process

Abstract

The utility model belongs to the technical field of heat exchanger devices used in the sulfuric acid preparation process, and discloses a heat exchanger device used in the sulfuric acid preparation process, which comprises a first shell, a high-temperature groove is formed in the first shell, one side of the first shell is connected with a second shell, and a low-temperature groove is formed in the second shell. A high-temperature pipeline opening is formed in the top end of the first shell, low-temperature pipeline openings are formed in the top end and the bottom end of the second shell, the pair of low-temperature pipeline openings communicate with the low-temperature groove, and the high-temperature pipeline opening and the pair of low-temperature pipeline openings communicate with expansion pipelines. Through the arrangement of the metal expansion joints, deformation can be conveniently conducted according to temperature changes, the device adapts to heat expansion and cold contraction caused by alternate cooling and heating, through the matched use of the connecting rings and the connecting holes, external pipelines can be conveniently connected, through the arrangement of the arc-shaped baffle plates, cooling media (such as water or air) in the shell pass can transversely wash pipe bundles for multiple times, and the cooling efficiency is improved. And the heat insulation layer is arranged, so that heat loss can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the heat exchanger device technical field for preparing in the process of sulfuric acid, more specifically, it is especially related to a heat exchanger device for preparing in the process of sulfuric acid. BACKGROUND

[0002] The heat exchanger is a kind of equipment for heat exchange between different temperature medium, is widely used in chemical industry, petroleum, pharmaceutical industry etc. It is mainly composed of shell, heat exchange tube bundle and inlet and outlet connection pipe, commonly adopts spiral groove pipe etc. Structure to improve heat transfer efficiency. Heat exchanger can effectively save energy and reduce consumption, ensure process stability.

[0003] The heat exchanger device for preparing in the process of sulfuric acid now, when preparing sulfuric acid, its pipeline inlet and outlet will be in high-low temperature repeatedly switching environment for a long time, metal shell and pipeline can be due to thermal expansion and cold contraction cause metal fatigue, so that pipeline appears crack or deformation, influence medium to enter the inside of heat exchanger.

[0004] Therefore, in view of the above, the existing structure and the lack are improved, a heat exchanger device for preparing in the process of sulfuric acid is provided, to achieve more practical value. INVENTION CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of heat exchanger device for preparing in the process of sulfuric acid, by following specific technical means:

[0006] A kind of heat exchanger device for preparing in the process of sulfuric acid, including first shell, high-temperature groove is set in the inside of the first shell, the second shell is connected to one side of the first shell, the second shell is set with low-temperature groove, high-temperature pipeline port is set in the top of the first shell, low-temperature pipeline port is set in the top and bottom of the second shell, and the low-temperature pipeline port is communicated with the low-temperature groove, the high-temperature pipeline port and a pair of low-temperature pipeline port are all communicated with expansion pipeline, a plurality of pipe plates are provided in the high-temperature groove, a plurality of pipe plates are fixedly connected with heat exchange tube bundle.

[0007] Further, the heat exchange tube bundle is composed of a plurality of heat exchange tubes arranged in a regular triangle, and the heat exchange tubes are spiral groove pipes.

[0008] Further, the expansion pipeline includes a metal expansion joint and a connecting ring, the connecting ring is located on one side of the metal expansion joint, and a plurality of connecting holes are provided on the connecting ring.

[0009] Further, a plurality of arc baffles are provided in the high-temperature groove.

[0010] Further, the high-temperature pipeline port and the inlet of the pair of low-temperature pipeline ports are provided with filters and valves.

[0011] Further, the bottom end of the first shell and the second shell is provided with a support.

[0012] Further, the outer side of the first shell is provided with a thermal insulation layer.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] In the utility model, through the setting of the metal expansion joint, the shape change can be conveniently carried out according to temperature change, and the thermal expansion and cold contraction of cold and hot alternation are adapted, through the cooperation of the connecting ring and the connecting hole, the external pipeline can be conveniently connected, through the setting of the arc baffle, the cooling medium (such as water or air) in the shell can be multiple times of transverse scouring of the pipe bundle, through the setting of the thermal insulation layer, the heat loss can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model.

[0016] Figure 2 It is the front cross-sectional schematic diagram of the utility model.

[0017] Figure 3 It is the side cross-sectional schematic diagram of the utility model.

[0018] Figure 4 It is the expansion pipeline side cross-sectional schematic diagram of the utility model.

[0019] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0020] 1, first shell;2, high-temperature tank;3, second shell;4, low-temperature tank;5, high-temperature pipeline port;6, low-temperature pipeline port;7, tube sheet;8, heat exchange pipe bundle;9, metal expansion joint;10, connecting hole;11, arc baffle;12, support;13, thermal insulation layer;14, connecting ring. DETAILED DESCRIPTION

[0021] The embodiment of the utility model is further described in detail below in combination with the drawings and examples.The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0022] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" 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 limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Embodiment:

[0025] As shown in the accompanying Figure 1 to the accompanying Figure 4 As shown:

[0026] The utility model provides a kind of heat exchanger device for preparing in the process of sulfuric acid, including first shell 1, high-temperature groove 2 is set in the inside of first shell 1, one side of first shell 1 is connected with second shell 3, second shell 3 is set with low-temperature groove 4, the top of first shell 1 is set with high-temperature pipeline mouth 5, the top and bottom of second shell 3 are set with low-temperature pipeline mouth 6, and a pair of low-temperature pipeline mouth 6 are all communicated with low-temperature groove 4, and high-temperature pipeline mouth 5 and a pair of low-temperature pipeline mouth 6 are all communicated with expansion pipeline, a plurality of tube sheets 7 are provided in high-temperature groove 2, and a plurality of tube sheets 7 are fixedly connected with heat exchange tube bundle 8.

[0027] Among them, heat exchange tube bundle 8 is composed of a plurality of heat exchange tubes according to equilateral triangle arrangement mode, and the heat exchange tube is screw groove pipe, and equilateral triangle arrangement mode can ensure that fluid is evenly distributed between tube bundle, increase the turbulence degree of fluid, so as to improve heat exchange coefficient, and the design of screw groove pipe can effectively increase heat exchange area.

[0028] Among them, expansion pipeline includes metal expansion joint 9 and connecting ring 14, connecting ring 14 is located on one side of metal expansion joint 9, a plurality of connecting holes 10 are arranged on connecting ring 14, metal expansion joint 9 can conveniently deform according to temperature change, and adapt to thermal expansion and cold shrinkage of cold and hot alternation.

[0029] The high-temperature tank 2 is provided with a plurality of arc baffles 11, which can make the cooling medium (such as water or air) in the shell pass through the tube bundle multiple times.

[0030] The high-temperature pipe opening 5 and the inlet of the pair of low-temperature pipe openings 6 are provided with filters and valves.

[0031] The first shell 1 and the second shell 3 are provided with supports 12 at the bottom ends, which are used for supporting and fixing the heat exchanger device and ensuring the stability.

[0032] The first shell 1 is provided with an insulation layer 13 outside, which can effectively reduce heat loss.

[0033] The working principle of the embodiment is as follows: in the process of preparing sulfuric acid, high-temperature medium (such as steam) enters the heat exchange tube bundle 8 through the metal expansion joint 9 of the high-temperature pipe opening 5, and low-temperature gas enters the second shell 3 and exchanges heat with the heat exchange tube bundle 8 through the metal expansion joint 9 of the low-temperature pipe opening 6. Since the heat exchange tube bundle 8 adopts a spiral groove pipe design, the turbulence of the medium is increased, the heat exchange coefficient is improved, the heat can be more effectively transferred from the high-temperature medium to the low-temperature gas, and the low-temperature gas is heated to an appropriate temperature and then enters the catalytic reactor for secondary conversion reaction, so that the catalytic reaction can be completely carried out. The low-temperature gas is discharged from the low-temperature pipe opening 6 at the bottom end of the second shell 3 through the metal expansion joint 9 and enters the next process. The metal expansion joint 9 can conveniently deform according to the temperature change and adapt to the thermal expansion and cold contraction of the cold and hot alternation.

[0034] The embodiments of the present application are given for the purpose of illustration and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A heat exchanger device for sulfuric acid preparation, comprising a first shell (1), characterized in that: The first shell (1) has a high temperature tank (2) inside. A second shell (3) is connected to one side of the first shell (1). A low temperature tank (4) is provided in the second shell (3). A high temperature pipe port (5) is provided at the top of the first shell (1). A low temperature pipe port (6) is provided at the top and bottom of the second shell (3). Both of the pair of low temperature pipe ports (6) are connected to the low temperature tank (4). Both the high temperature pipe port (5) and the pair of low temperature pipe ports (6) are connected to an expansion pipe. Several tube sheets (7) are provided in the high temperature tank (2). Heat exchange tube bundles (8) are fixedly connected between the several tube sheets (7).

2. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: The heat exchange tube bundle (8) is composed of multiple heat exchange tubes arranged in an equilateral triangle, and the heat exchange tubes are threaded groove tubes.

3. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: The expansion pipe includes a metal expansion joint (9) and a connecting ring (14). The connecting ring (14) is located on one side of the metal expansion joint (9) and has a plurality of connecting holes (10).

4. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: The high-temperature tank (2) is equipped with several arc-shaped baffles (11).

5. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: Filters and valves are provided at the inlets of the high-temperature pipe port (5) and the pair of low-temperature pipe ports (6).

6. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: The bottom ends of the first housing (1) and the second housing (3) are both provided with brackets (12).

7. The heat exchanger apparatus for sulfuric acid preparation as described in claim 1, characterized in that: An insulation layer (13) is provided on the outer side of the first housing (1).

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