Apparatus for synthesis reaction using raw material sulfuric acid of concentration

Abstract

The application relates to a device for synthesizing reaction of raw material sulfuric acid, and relates to the technical field of synthesis devices, which comprises a kettle body, a heat exchange jacket is fixedly connected to the outer wall of the kettle body, two rotating rings are vertically and parallely arranged in the heat exchange jacket from top to bottom, a plurality of mixing flow plates are arranged between the opposite end faces of the two rotating rings in the circumferential direction, a gas distribution pipe is vertically and rotatably arranged in the kettle body, a gas distribution structure is fixedly connected to the gas distribution pipe, and the rotating ring is rotatably arranged by being driven by the linkage structure. The device solves the problem that, in the prior art, heat is generated in the synthesis process of sulfuric acid, the heat exchange structure of the existing heat exchange structure for the kettle body is limited by the temperature influence of the heat exchange medium in and out, and the temperature control stability in the sulfuric acid synthesis reaction process cannot be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of synthesis apparatus technology, specifically to an apparatus for synthesizing sulfuric acid concentrations from raw materials. Background Technology

[0002] Sulfuric acid, as a crucial raw material in the chemical industry, significantly impacts the reaction process, product quality, and yield in synthetic reactions. Different synthetic reactions have specific requirements for sulfuric acid concentration. For example, nitration typically requires concentrated sulfuric acid to provide a strong acidic and dehydrating environment, while some organic synthesis reactions may use dilute sulfuric acid for catalytic hydrolysis. To meet these diverse needs, various apparatuses for synthetic reactions using different sulfuric acid concentrations have emerged.

[0003] A prior art patent with publication number CN218422084U discloses a solution including an acid inlet pipe, an acid outlet pipe, and a dilution pipe, each pipe connected by segmented flange bolts; the acid inlet pipe and acid outlet pipe pass through both ends of the dilution pipe; a first injection pipe for supplying deoxygenated water and compressed air is radially inserted into the side wall of the dilution pipe near the acid inlet pipe, and the end of the first injection pipe extending into the dilution pipe is closed. Existing technologies often use injection pipes arranged axially and with a single cantilevered long-arm structure. The heat generated during sulfuric acid dilution causes the medium to boil, leading to problems such as pipe arm vibration and localized deformation. By radially inserting an injection pipe with several injection holes and limiting the length and opening range of the injection pipe, the mixing of sulfuric acid during dilution is increased, effectively solving the problems of frequent injection pipe breakage and uneven sulfuric acid mixing.

[0004] Existing devices, including those mentioned above, have gradually revealed shortcomings in the technology with use, mainly in the following aspects:

[0005] First, sulfuric acid generates heat during synthesis. Existing heat exchange structures, when used to heat the reactor, are limited by the temperature of the heat exchange medium entering and exiting at different times, and cannot guarantee the temperature control stability during the sulfuric acid synthesis reaction.

[0006] Secondly, when it is necessary to increase the concentration of dilute sulfuric acid during the synthesis process, dry air or inert gas needs to be introduced to assist in the evaporation of moisture. However, due to the limitations of the existing air intake structure, the gas cannot be uniformly mixed and contacted with the sulfuric acid solution, which in turn affects the efficiency of sulfuric acid synthesis.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, the present invention provides a device for the synthesis reaction of sulfuric acid, which solves the problem that in traditional technologies, sulfuric acid generates heat during the synthesis process. When existing heat exchange structures are used to exchange heat with the reactor body, they are limited by the temperature influence of the order of entry and exit of the heat exchange medium, and cannot guarantee the temperature control stability during the sulfuric acid synthesis reaction.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An apparatus for the synthesis reaction of sulfuric acid from raw materials includes a vessel body. A heat exchange jacket is fixedly connected to the outer wall of the vessel body. Two rotating rings are installed side by side and rotate from top to bottom inside the heat exchange jacket. Several mixing plates are arranged circumferentially between the opposite end faces of the two rotating rings. A gas distribution pipe is vertically and rotatably installed inside the vessel body. A gas distribution structure is fixedly connected to the gas distribution pipe. The gas distribution structure drives the rotating rings to rotate through a linkage structure.

[0011] As an optimized solution, the air distribution structure includes an air distribution plate fixed to the opposite side wall of the lower end of the air distribution pipe. The air distribution plate has a cavity that communicates with the inner cavity of the air distribution pipe. Several air distribution holes connected to the inner cavity are arranged side by side on the side wall of the air distribution plate.

[0012] As an optimized solution, the outer end of the gas distribution plate is vertically fixed with a side scraper that rubs against the inner wall of the vessel.

[0013] As an optimized solution, the linkage structure includes first magnetic blocks fixedly attached to the upper and lower sidewalls of the side scraper, and second magnetic blocks that match a plurality of the first magnetic blocks are fixedly attached to the inner ring of the rotating ring.

[0014] As an optimized solution, a first mounting groove is provided on the side wall of the side scraper, and the first magnetic block is fixed in the first mounting groove.

[0015] As an optimized solution, the inner ring of the rotating ring is provided with a plurality of second mounting grooves, and the second magnetic block is fixedly connected to the second mounting groove.

[0016] As an optimized solution, a heat exchange medium inlet cylinder communicating with its inner cavity is fixedly connected to the outer wall near the bottom of the heat exchange jacket, and a heat exchange medium outlet cylinder communicating with its inner cavity is fixedly connected to the outer wall near the top of the heat exchange jacket.

[0017] As an optimized solution, the upper end of the gas distribution pipe extends to the top of the vessel body and is rotatably fitted with an air inlet cylinder.

[0018] As an optimized solution, a toothed ring is fixedly connected to the outer wall of the gas distribution pipe, and a drive motor is fixedly connected to the upper end of the vessel body. The output shaft of the drive motor meshes with the toothed ring using gears.

[0019] As an optimized solution, a sulfuric acid inlet valve pipe communicating with the inner cavity is fixedly connected to the top of the vessel.

[0020] As an optimized solution, a feed pipe communicating with the inner cavity is fixedly connected to the top of the vessel body.

[0021] As an optimized solution, a discharge valve cylinder is fixedly connected to the lower end of the vessel body.

[0022] As an optimized solution, the lower surface of the gas distribution plate is in frictional contact with the inner bottom surface of the vessel body.

[0023] As an optimized solution, the mixing plate is arranged radially towards the vessel body in a top-view orientation.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] By setting up a linkage structure, the magnetic attraction is used to drive the rotating ring to rotate when the gas distribution structure rotates. The rotating ring drives the mixing plate to rotate inside the heat exchange jacket, thereby turbulenting the heat exchange medium inside the heat exchange jacket and making the temperature of the heat exchange medium inside the heat exchange jacket uniform. This overcomes the phenomenon that the traditional method of setting heat exchange coils results in a large temperature difference between the inlet and outlet, which affects the large temperature difference in the internal sulfuric acid reaction process.

[0026] Furthermore, the linkage structure based on the magnetic attraction principle reduces the power source required to drive the rotation independently, thus reducing the space occupied by the external structure of the vessel.

[0027] By setting up a gas distribution pipe and connecting the gas inlet pipe to the gas source, when gas needs to be introduced, the gas enters the cavity of the gas distribution plate along the gas distribution pipe and is evenly sprayed out through the gas distribution holes, realizing gas intake from the bottom of sulfuric acid. By utilizing the rising characteristics of gas, the mixing uniformity with sulfuric acid is improved, thereby increasing the efficiency of sulfuric acid synthesis reaction. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] In the diagram: 1-Bottle body; 2-Heat exchange jacket; 3-Rotating ring; 4-Mixing plate; 5-First magnetic block; 6-Second magnetic block; 7-Gas distribution plate; 8-Gas distribution hole; 9-Side scraper; 10-Reinforcing rod; 11-Gas distribution pipe; 12-Discharge valve cylinder; 13-Inlet cylinder; 14-Gear ring; 15-Driver; 16-Inlet pipe; 17-Sulfuric acid addition valve pipe; 18-Heat exchange medium inlet cylinder; 19-Heat exchange medium outlet cylinder. Detailed Implementation

[0031] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0032] like Figure 1 As shown, the apparatus for the synthesis reaction of sulfuric acid concentration of raw materials includes a vessel body 1. A heat exchange jacket 2 is fixedly connected to the outer wall of the vessel body 1. Two rotating rings 3 are installed in parallel from top to bottom inside the heat exchange jacket 2. Several mixing plates 4 are arranged circumferentially between the opposite end faces of the two rotating rings 3. A gas distribution pipe 11 is vertically rotatably installed inside the vessel body 1. A gas distribution structure is fixedly connected to the gas distribution pipe 11. The gas distribution structure drives the rotating rings 3 to rotate through a linkage structure.

[0033] The air distribution structure includes an air distribution plate 7 fixed to the opposite side wall of the lower end of the air distribution pipe 11. The air distribution plate 7 has a cavity inside that communicates with the inner cavity of the air distribution pipe 11. Several air distribution holes 8 connected to its inner cavity are arranged side by side on the side wall of the air distribution plate 7.

[0034] A side scraper 9 that rubs against the inner wall of the vessel body 1 is vertically fixed to the outer end of the gas distribution plate 7, and a reinforcing rod 10 is fixed between the upper end of the side scraper 9 and the gas distribution pipe 11.

[0035] The linkage structure includes first magnetic blocks 5 fixedly attached to the side walls of the side scraper 9 near the upper and lower ends, and second magnetic blocks 6 that match a number of first magnetic blocks 5 are fixedly attached to the inner ring of the rotating ring 3.

[0036] A first mounting groove is provided on the side wall of the side scraper 9, and the first magnetic block 5 is fixed in the first mounting groove.

[0037] The inner ring of the rotating ring 3 is provided with several second mounting slots, and the second magnetic block 6 is fixed in the second mounting slot.

[0038] A gap is provided between the magnetic block and the groove of the mounting slot to prevent direct frictional contact with the side wall of the vessel body 1.

[0039] A heat exchange medium inlet cylinder 18, which communicates with the inner cavity, is fixedly connected to the outer wall near the bottom of the heat exchange jacket 2, and a heat exchange medium outlet cylinder 19, which communicates with the inner cavity, is fixedly connected to the outer wall near the top of the heat exchange jacket 2.

[0040] The upper end of the gas distribution pipe 11 extends to the top of the vessel body 1 and is rotatably inserted with an air inlet cylinder 13. A sealing ring is provided between the outer wall of the air inlet cylinder 13 and the inner wall of the gas supply pipe.

[0041] A gear ring 14 is fixedly connected to the outer wall of the gas distribution pipe 11, and a drive motor 15 is fixedly connected to the upper end of the vessel body 1. The output shaft of the drive motor 15 meshes with the gear ring 14 using gears. A dust cover covering the gear ring 14 and gears can be installed on the top of the drive motor 15. The dust cover has holes to avoid the gas distribution pipe 11.

[0042] A sulfuric acid inlet valve pipe 17, which connects to the inner cavity of the vessel body 1, is fixedly connected to the top of the vessel body 1.

[0043] The top of the vessel body 1 is fixedly connected to a feed pipe 16 that communicates with its inner cavity.

[0044] A discharge valve cylinder 12 is fixedly connected to the lower end of the vessel body 1.

[0045] The lower surface of the gas distribution plate 7 is in frictional contact with the inner bottom surface of the vessel body 1.

[0046] The mixing plate 4 is inclined radially to the vessel body 1 in the top view direction.

[0047] The concentration meter inside the vessel 1 and other structures on the vessel 1 are the same as those in the existing sulfuric acid concentration reaction synthesis vessel 1, so they will not be described in detail here.

[0048] The working principle of this device is as follows:

[0049] By setting up a linkage structure, the magnetic attraction is used to drive the rotating ring 3 to rotate when the gas distribution structure rotates. The rotating ring 3 drives the mixing plate 4 to rotate inside the heat exchange jacket 2, thereby turbulenting the heat exchange medium inside the heat exchange jacket 2 and making the temperature of the heat exchange medium inside the heat exchange jacket 2 uniform. This overcomes the phenomenon that the traditional method of setting heat exchange coils results in a large temperature difference between the inlet and outlet, which affects the large temperature difference in the internal sulfuric acid reaction process.

[0050] Furthermore, the linkage structure based on the magnetic attraction principle reduces the power source required to drive the rotation independently, thus reducing the space occupied by the external structure of the vessel body 1.

[0051] By setting up a gas distribution pipe 11 and connecting the gas inlet pipe to the gas source, when gas needs to be introduced, the gas enters the cavity of the gas distribution plate 7 along the gas distribution pipe 11 and is evenly sprayed out through the gas distribution holes 8, so as to realize gas intake from the bottom of sulfuric acid. By utilizing the rising characteristics of gas, the mixing uniformity with sulfuric acid is improved, and the efficiency of sulfuric acid synthesis reaction is improved.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An apparatus for synthesizing sulfuric acid from raw materials, characterized in that: The vessel includes a vessel body (1), a heat exchange jacket (2) is fixedly connected to the outer wall of the vessel body (1), two rotating rings (3) are installed in parallel from top to bottom inside the heat exchange jacket (2), and several mixing plates (4) are arranged circumferentially between the opposite end faces of the two rotating rings (3). A gas distribution pipe (11) is vertically rotatably installed inside the vessel body (1), and a gas distribution structure is fixedly connected to the gas distribution pipe (11). The gas distribution structure drives the rotating rings (3) to rotate through a linkage structure.

2. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The air distribution structure includes an air distribution plate (7) fixed to the opposite side wall of the lower end of the air distribution pipe (11). The air distribution plate (7) has a cavity that communicates with the inner cavity of the air distribution pipe (11). Several air distribution holes (8) connected to its inner cavity are arranged side by side on the side wall of the air distribution plate (7).

3. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 2, characterized in that: The outer end of the gas distribution plate (7) is vertically fixed with a side scraper (9) that rubs against the inner wall of the vessel body (1).

4. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 3, characterized in that: The linkage structure includes first magnetic blocks (5) fixedly attached to the side walls of the side scraper (9) near the upper and lower ends, and second magnetic blocks (6) that match a number of the first magnetic blocks (5) are fixedly attached to the inner ring of the rotating ring (3).

5. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The heat exchange jacket (2) has a heat exchange medium inlet cylinder (18) connected to its inner cavity on the outer wall near the bottom, and a heat exchange medium outlet cylinder (19) connected to its inner cavity on the outer wall near the top.

6. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The upper end of the gas distribution pipe (11) extends above the vessel body (1) and is rotatably fitted with an air inlet cylinder (13).

7. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The top of the vessel body (1) is fixed with a sulfuric acid inlet valve pipe (17) that communicates with its inner cavity.

8. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The top of the vessel body (1) is fixedly connected to a feed pipe (16) that communicates with its inner cavity, and the lower end of the vessel body (1) is fixedly connected to a discharge valve cylinder (12).

9. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 2, characterized in that: The lower surface of the gas distribution plate (7) is in frictional contact with the inner bottom surface of the vessel body (1).

10. The apparatus for synthesizing sulfuric acid concentration from raw materials according to claim 1, characterized in that: The mixing plate (4) is arranged radially to the vessel body (1) in a top view direction.

Images