A heat exchange device for white carbon black slurry

Abstract

The present invention discloses a heat exchange device for silica slurry, which belongs to the field of silica production and includes a tank body and a heat exchange assembly. The tank body includes a first cover, a cylinder body, and a second cover that are detachably connected from top to bottom. The first cover is provided with a material inlet, the second cover is provided with a material outlet, a water inlet is provided on one side of the bottom of the cylinder body, and a water outlet is provided on one side of the top of the cylinder body. The heat exchange assembly is disposed within the cylinder body and includes multiple pipelines, including at least one air inlet pipe, at least one air outlet pipe, and multiple heat exchange pipes. The multiple pipelines are evenly distributed within the cylinder body, and adjacent pipelines are connected by connecting pipes. Steam can flow in multiple directions, ensuring uniform heat exchange, preventing the silica slurry from forming gel, and avoiding blockage. The outer wall of the pipeline is coated with a corrosion-resistant layer to prevent pipeline corrosion, increase service life, and reduce maintenance costs.

Description

Technical Field

[0001] The invention relates to the field of white carbon black production, and in particular to a white carbon black slurry heat exchange device. Background Art

[0002] As an environmentally friendly, high-performance additive, silica is primarily used in rubber products, textiles, papermaking, pesticides, food additives, and other fields. Currently, silica is produced industrially using two main methods: precipitation and vapor phase. Precipitation is the most commonly used method, using quartz sand, soda ash, industrial acid, and carbon dioxide as its primary raw materials. Precipitation can be further categorized into various methods, including the acid method, sol-gel method, and carbonization method.

[0003] The acid method for producing white carbon black is to react soluble silicate with sulfuric acid (or other acid). When the reaction liquid reaches a certain pH value, the acid addition reaction is stopped, and the reaction liquid is aged. Then, it is filtered and repeatedly washed with water to remove sodium sulfate. After that, the finished product is obtained after drying and crushing.

[0004] When washing silica slurry, the material is washed with water at room temperature. The oil absorption index of the finished product after washing is relatively low. Therefore, in the existing technology, when washing silica slurry, heat is mostly exchanged through a tubular heat exchanger to achieve the purpose of heating the slurry and washing water and improving the washing effect.

[0005] Existing tubular heat exchangers consist of multiple heat exchange tubes, where the medium flows unidirectionally. This results in uneven heat transfer from the silica slurry, which can cause the silica slurry to gel inside the heat exchanger tubes, adhering to the inner walls and causing blockages. Furthermore, the silica slurry contains a large amount of sodium sulfate, which can corrode the heat exchanger tube walls and cause leakage. Summary of the Invention

[0006] The object of the present invention is to provide a white carbon black slurry heat exchange device to solve the technical problems of uneven heat exchange and easy corrosion of pipe walls in the prior art.

[0007] As conceived above, the technical solution adopted by the present invention is:

[0008] A heat exchange device for white carbon black slurry, comprising:

[0009] The tank body comprises a first cover, a cylinder and a second cover detachably connected from top to bottom, the first cover being provided with a material inlet, the second cover being provided with a material outlet, a water inlet being provided on one side of the bottom of the cylinder, and a water outlet being provided on one side of the top of the cylinder;

[0010] A heat exchange component is arranged in the cylinder, and the heat exchange component includes multiple pipelines. The multiple pipelines are evenly distributed in the cylinder, and adjacent pipelines are connected by connecting pipes. The multiple pipelines include at least one air inlet pipe, at least one air outlet pipe and multiple heat exchange pipes, and the outer wall of the pipeline is coated with a corrosion-resistant layer.

[0011] Among them, multiple pipelines are arranged in a row along the first direction, and multiple rows of pipelines are spaced apart along the second direction. The pipelines in each row are connected to each other through the connecting pipes, and in two adjacent rows of pipelines, adjacent two pipelines are connected through the connecting pipes.

[0012] Wherein, two adjacent rows of pipelines are arranged alternately, and the angle between the first direction and the second direction is an obtuse angle.

[0013] There is one air inlet pipe and one air outlet pipe, and the air inlet pipe and the air outlet pipe are respectively located at two ends of the cylinder in the radial direction.

[0014] Among them, multiple pipelines are arranged around the circumference of the cylinder to form a circle, and multiple circles of pipelines are arranged in layers from outside to inside. The pipelines in each circle are connected to each other through the connecting pipes. In two adjacent circles of pipelines, two radially adjacent pipelines are connected through the connecting pipes.

[0015] The outermost circle of pipes is the air inlet pipe, and the innermost circle of pipes is the air outlet pipe.

[0016] Wherein, a water supply and exhaust port is provided on the upper part of the cylinder, and the water supply and exhaust port is higher than the water outlet.

[0017] Wherein, a first mounting plate is provided at the upper end of the cylinder, the first sealing cover is connected to the first mounting plate, and the first mounting plate is a porous plate.

[0018] Among them, a first flange is provided at the lower end of the first cover, a second flange is provided on the first mounting plate, a first accommodating groove is provided on the first flange, a first protrusion is provided on the second flange, the first protrusion can be inserted into the first accommodating groove, and the first flange and the second flange are connected by bolts.

[0019] The upper ends of the heat exchange tubes are connected to the first mounting plate, and the lower ends of the heat exchange tubes are provided with plugs.

[0020] Beneficial effects of the present invention:

[0021] The silica slurry heat exchange device proposed by the present invention has silica slurry entering through the material inlet on the first cover and flowing out through the material outlet on the second cover. Washing water enters through the water inlet of the cylinder and flows out through the water outlet of the cylinder. During the washing water washing of the silica slurry, the silica slurry contacts the heat exchange components in the cylinder, exchanging heat and increasing the temperature, thereby improving the washing effect. The steam used for heat exchange enters through the air inlet pipe, passes through each heat exchange tube, and flows out through the air outlet pipe. Because adjacent pipes are connected by connecting pipes, the steam can flow in multiple directions, allowing each pipe to be quickly filled with steam, ensuring uniform heat exchange, preventing the silica slurry from forming gel, and avoiding blockage. Because the outer wall of the pipe is coated with a corrosion-resistant layer, it can prevent corrosion of the pipe, increase service life, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a heat exchange device for white carbon black slurry provided in Example 1 of the present invention;

[0023] Figure 2 yes Figure 1 A magnified view of point A;

[0024] Figure 3 is a cross-sectional view of a white carbon black slurry heat exchange device provided in Example 1 of the present invention;

[0025] Figure 4 It is a cross-sectional view of the white carbon black slurry heat exchange device provided in Example 2 of the present invention.

[0026] In the picture:

[0027] 11. First sealing cover; 111. Material inlet; 112. Material exhaust port; 12. Cylinder; 121. Water inlet; 122. Water outlet; 123. Sewage outlet; 124. Water supply and exhaust port; 13. Second sealing cover; 131. Material outlet; 14. First mounting plate; 141. First protrusion; 15. First flange; 151. First accommodating groove;

[0028] 21. Inlet pipe; 22. Outlet pipe; 23. Heat exchange pipe; 24. Connecting pipe;

[0029] 30. Filter. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0031] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] Example 1

[0035] See also Figures 1 to 3 An embodiment of the present invention provides a heat exchange device for silica slurry, comprising a tank body and a heat exchange component. The heat exchange component is disposed in the tank body. When silica slurry flows through the tank body, it contacts and exchanges heat with the heat exchange component.

[0036] The tank body includes a first cover 11, a barrel 12, and a second cover 13, which are detachably connected from top to bottom. The first cover 11 has a material inlet 111, and the second cover 13 has a material outlet 131. A water inlet 121 is provided on one side of the bottom of the barrel 12, and a water outlet 122 is provided on one side of the top of the barrel 12. The detachable connection of the first cover 11, barrel 12, and second cover 13 facilitates replacement of internal heat exchange components, as well as cleaning and maintenance of the interior of the tank.

[0037] The first sealing cover 11 is further provided with a material exhaust port 112 , which is located on one side of the material inlet 111 . The material exhaust port 112 is used to discharge the hot air of the material.

[0038] The white carbon black slurry enters from the material inlet 111 on the first cover 11 and flows out from the material outlet 131 on the second cover 13. The washing water enters from the water inlet 121 of the cylinder 12 and flows out from the water outlet 122 of the cylinder 12. In the process of washing the white carbon black slurry with the washing water, the white carbon black slurry contacts the heat exchange component in the cylinder 12 to exchange heat and heat up, thereby improving the washing effect.

[0039] The heat exchange assembly is disposed within the cylinder 12. A first mounting plate 14 is provided at the upper end of the cylinder 12. The first cover 11 is connected to the first mounting plate 14. The first mounting plate 14 is a porous plate. The porous plate guides the silica slurry, ensuring that it flows evenly into the cylinder 12 and allows for sufficient contact between the silica slurry and the heat exchange assembly.

[0040] Specifically, a first flange 15 is provided at the lower end of the first cover 11, and a second flange is provided on the first mounting plate 14. The first flange 15 defines a first receiving groove 151, and the second flange is provided with a first protrusion 141. The first protrusion 141 is inserted into the first receiving groove 151, and the first flange 15 and the second flange are connected by bolts. The cooperation between the first protrusion 141 and the first receiving groove 151 provides a positioning function, facilitating the connection between the first cover 11 and the cylinder body 12.

[0041] A second mounting plate is provided at the lower end of the cylinder 12, and a second cover 13 is connected to the second mounting plate. The second mounting plate is a porous plate. The porous plate can guide the silica slurry so that the silica slurry flows out of the cylinder 12 evenly, thereby preventing the silica slurry from accumulating and clogging.

[0042] Specifically, a third flange is provided at the upper end of the second cover 13, and a fourth flange is provided on the second mounting plate. The third flange has a second receiving groove, and the fourth flange has a second protrusion that can be inserted into the second receiving groove. The third and fourth flanges are connected by bolts. The cooperation between the second protrusion and the second receiving groove provides a positioning function, facilitating the connection between the second cover 13 and the cylinder body 12.

[0043] The first cover 11 is welded to the first flange 15, the first mounting plate 14 is integrally formed with the second flange, the second cover 13 is welded to the third flange, and the second mounting plate is integrally formed with the fourth flange.

[0044] The second mounting plate is provided with a filter 30, which covers all the holes in the porous plate. After washing, the silica slurry passes through the filter 30 and then flows out of the material outlet 131 through the second mounting plate. The filter 30 can intercept impurities in the silica slurry.

[0045] A sewage outlet 123 is provided on one side of the bottom of the cylinder 12, through which sewage can be discharged. The sewage outlet 123 is arranged opposite to the water inlet 121.

[0046] A water inlet and outlet port 124 is provided at the upper portion of the cylinder 12 . The water inlet and outlet port 124 is higher than the water outlet 122 so as to discharge the hot air generated during the water washing and heat exchange process.

[0047] The heat exchange assembly includes multiple pipelines, which are evenly distributed in the cylinder 12. Adjacent pipelines are connected through connecting pipes 24. The multiple pipelines include at least one air inlet pipe 21, at least one air outlet pipe 22 and multiple heat exchange pipes 23. A corrosion-resistant layer is applied on the outer wall of the pipeline.

[0048] Steam used for heat exchange enters through the inlet pipe 21, passes through each heat exchange tube 23, and exits through the outlet pipe 22. Because adjacent tubes are connected by connecting pipes 24, steam can flow in multiple directions, rapidly filling each tube with steam, ensuring uniform heat exchange and preventing the silica slurry from gelling and clogging. A corrosion-resistant coating on the outer wall of the tube prevents corrosion, extending its service life and reducing maintenance costs.

[0049] Specifically, one end of the inlet pipe 21 is connected to the first mounting plate 14, and the other end of the inlet pipe 21 is connected to the second mounting plate, thereby securing the inlet pipe 21. One end of the outlet pipe 22 is connected to the first mounting plate 14, and the other end of the outlet pipe 22 is connected to the second mounting plate, thereby securing the outlet pipe 22. The upper end of the heat exchange tube 23 is connected to the first mounting plate 14, and the lower end of the heat exchange tube 23 is provided with a plug.

[0050] In this embodiment, one air inlet pipe 21 is provided and one air outlet pipe 22 is provided. The air inlet pipe 21 and the air outlet pipe 22 are respectively located at the radial ends of the cylinder 12, so that the air inlet pipe 21 and the air outlet pipe 22 are far apart, so that the flow path of the steam is longer, the steam can fully contact the pipeline, and the heat exchange effect is improved.

[0051] The air inlet of the air inlet pipe 21 is located at the bottom of the air inlet pipe 21 , and the air outlet of the air outlet pipe 22 is located at the top of the air outlet pipe 22 .

[0052] In this embodiment, multiple pipelines are arranged in a row along the first direction, and multiple rows of pipelines are spaced apart along the second direction. Each row of pipelines is connected to each other through a connecting pipe 24, and in two adjacent rows of pipelines, adjacent two pipelines are connected through a connecting pipe 24.

[0053] In this embodiment, two adjacent rows of pipelines are arranged alternately to fully utilize the space, and the angle between the first direction and the second direction is an obtuse angle. Figure 3 A indicated by the middle arrow is the first direction, and B is the second direction.

[0054] Along the length of each pipeline, multiple connecting pipes 24 are arranged at intervals to allow steam to quickly fill each pipeline in multiple directions, ensuring uniform heat exchange and preventing the silica slurry from forming gel and avoiding blockage.

[0055] Example 2

[0056] Figure 4 A second embodiment is shown, wherein components identical or corresponding to those in the first embodiment are designated by the corresponding reference numerals. For simplicity, only the differences between the second embodiment and the first embodiment will be described. The difference lies in that multiple pipelines are arranged circumferentially around the barrel 12 to form a circle. The multiple circles of pipelines are arranged in layers from the outside inward, with each pair of pipelines in each circle connected by connecting pipes 24. Within adjacent circles of pipelines, radially adjacent pipelines are connected by connecting pipes 24. Because the barrel 12 is cylindrical, arranging the pipelines in circles more fully utilizes the internal volume of the barrel 12.

[0057] The outermost circle of pipes is the air inlet pipe 21, and the innermost circle of pipes is the air outlet pipe 22. Steam flows from the outside to the inside. Since the outer pipes are closer to the outer wall of the cylinder 12, heat dissipation is fast. When high-temperature steam is introduced into the outermost pipes, the temperature of the steam decreases as it flows inward. However, the heat dissipation in the inner pipes is slow, thus ensuring uniform heat exchange.

[0058] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device for white carbon black slurry, characterized in that: include: The tank body comprises a first cover (11), a cylinder (12) and a second cover (13) which are detachably connected from top to bottom, wherein the first cover (11) is provided with a material inlet (111), the second cover (13) is provided with a material outlet (131), a water inlet (121) is provided on one side of the bottom of the cylinder (12), and a water outlet (122) is provided on one side of the top of the cylinder (12); A heat exchange component is arranged in the cylinder (12), the heat exchange component includes a plurality of pipelines, the plurality of pipelines are evenly distributed in the cylinder (12), adjacent pipelines are connected through connecting pipes (24), the plurality of pipelines include at least one air inlet pipe (21), at least one air outlet pipe (22) and a plurality of heat exchange pipes (23), and the outer walls of the pipelines are coated with a corrosion-resistant layer; A water supply and exhaust port (124) is provided on the upper portion of the cylinder (12), and the water supply and exhaust port (124) is higher than the water outlet (122); A plurality of the pipelines are arranged in a row along a first direction, and a plurality of rows of the pipelines are spaced apart along a second direction. The pipelines in each row are connected to each other through the connecting pipe (24), and in two adjacent rows of the pipelines, two adjacent pipelines are connected to each other through the connecting pipe (24); Alternatively, a plurality of the pipelines are arranged circumferentially around the cylinder (12) to form a circle, and the plurality of circles of the pipelines are arranged layer by layer from outside to inside, and the pipelines in each circle are connected to each other through the connecting pipe (24), and in two adjacent circles of the pipelines, the two radially adjacent pipelines are connected through the connecting pipe (24); the pipeline in the outermost circle is the air inlet pipe (21), and the pipeline in the innermost circle is the air outlet pipe (22).

2. The heat exchange device for white carbon black slurry according to claim 1, characterized in that: The pipelines in two adjacent rows are arranged alternately, and the angle between the first direction and the second direction is an obtuse angle.

3. The heat exchange device for silica slurry according to claim 1, characterized in that: One air inlet pipe (21) is provided, and one air outlet pipe (22) is provided. The air inlet pipe (21) and the air outlet pipe (22) are respectively located at two ends of the radial direction of the cylinder (12).

4. The white carbon black slurry heat exchange device according to any one of claims 1 to 3, characterized in that: A first mounting plate (14) is provided at the upper end of the cylinder (12), the first sealing cover (11) is connected to the first mounting plate (14), and the first mounting plate (14) is a porous plate.

5. The white carbon black slurry heat exchange device according to claim 4, characterized in that: A first flange (15) is provided at the lower end of the first cover (11), a second flange is provided on the first mounting plate (14), a first receiving groove (151) is provided on the first flange (15), a first protrusion (141) is provided on the second flange, the first protrusion (141) can be inserted into the first receiving groove (151), and the first flange (15) and the second flange are connected by bolts.

6. The heat exchange device for white carbon black slurry according to claim 4, characterized in that: The upper ends of the heat exchange tubes (23) are connected to the first mounting plate (14), and the lower ends of the heat exchange tubes (23) are provided with plugs.

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