Leakage-proof graphite heat exchanger for phosphoric acid workshop

Abstract

The utility model discloses a leakproof graphite heat exchanger for a phosphoric acid workshop, and relates to the technical field of phosphoric acid heat exchangers. The device comprises a group of graphite heat exchange blocks and two opposite-pull frames, a group of phosphoric acid channels are formed in the longitudinal horizontal side faces of the graphite heat exchange blocks in a penetrating mode, the two opposite-pull frames are fixedly installed at the two ends of the graphite heat exchange block group respectively, and opposite-pull screws are connected between opposite-pull lugs fixedly arranged on the outer side frame faces of the opposite-pull frames in a penetrating mode. The opposite-pulling screw rod is sleeved with an opposite-pulling nut in a threaded mode, and a leakage-proof butt joint is installed between the butt joint positions of the phosphoric acid channels. According to the utility model, the leakage-proof butt joint is arranged in the phosphoric acid channel between the two graphite heat exchange blocks, so that phosphoric acid is prevented from leaking between the two graphite heat exchange blocks under the action of the leakage-proof butt joint; the two opposite-pull frames are tensioned through the opposite-pull screws, so that the anti-leakage butt joints are fastened between the graphite heat exchange blocks in an opposite mode, and the situation that phosphoric acid leaks at ports due to the fact that the anti-leakage butt joints are installed at the ports of the phosphoric acid channel loosely is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to phosphoric acid heat exchanger technical field, especially relate to a phosphoric acid workshop is with leak -proof graphite heat exchanger. BACKGROUND

[0002] The reaction in the production of phosphoric acid is usually exothermic, and the heat exchanger can effectively remove excess heat to maintain the reaction temperature in the optimal range and avoid overheating to affect the reaction rate and product quality. When the phosphoric acid is heat exchanged, the phosphoric acid heat exchanger is made of graphite material because the phosphoric acid is corrosive. The graphite heat exchanger is formed by splicing multiple graphite blocks. However, gaps are formed between the graphite blocks when they are connected. When the phosphoric acid flows in the graphite heat exchanger, it may leak, resulting in waste of raw materials and damage to the equipment due to the phosphoric acid overlooking the equipment.

[0003] Therefore, we provide a phosphoric acid workshop is with leak -proof graphite heat exchanger to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a phosphoric acid workshop is with leak -proof graphite heat exchanger, install leak -proof butt joint in the phosphoric acid passageway between two graphite heat exchange blocks, when the phosphoric acid flows from one graphite heat exchange block to another graphite heat exchange block, prevent the phosphoric acid from leaking between the two graphite heat exchange blocks under the action of leak -proof butt joint. By fixing and installing the pull frame at both ends of the graphite heat exchange block group, and tightening the pull screw between the two pull frames, the leak -proof butt joint between the graphite heat exchange blocks is fastened, and the leak -proof butt joint is prevented from loosening at the port of the phosphoric acid passageway, which prevents the phosphoric acid from leaking at the port.

[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0006] The utility model discloses a phosphoric acid workshop is with leak -proof graphite heat exchanger, install leak -proof butt joint in the phosphoric acid passageway between two graphite heat exchange blocks, when the phosphoric acid flows from one graphite heat exchange block to another graphite heat exchange block, prevent the phosphoric acid from leaking between the two graphite heat exchange blocks under the action of leak -proof butt joint. By fixing and installing the pull frame at both ends of the graphite heat exchange block group, and tightening the pull screw between the two pull frames, the leak -proof butt joint between the graphite heat exchange blocks is fastened, and the leak -proof butt joint is prevented from loosening at the port of the phosphoric acid passageway, which prevents the phosphoric acid from leaking at the port.

[0007] The utility model further sets up, the phosphoric acid passageway inlet end is provided with inlet cone mouth, and inlet cone mouth gradually converges from outside to inside.

[0008] The utility model further sets up, the graphite heat exchange block is provided with butt joint taper groove on the outside of the outlet end of the phosphoric acid passageway, and the butt joint taper groove gradually converges from inside to outside.

[0009] The utility model further sets up, the one end of leakproof butt joint is the liquid outlet that gradually contracts from inside to outside of outside, the other end of leakproof butt joint is the liquid inlet that gradually expands from inside to outside of inside, the liquid outlet of leakproof butt joint is butt joint with the liquid inlet cone of phosphoric acid channel, and the liquid inlet of leakproof butt joint is butt joint with the butt joint cone groove of graphite heat exchange block.

[0010] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0011] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0012] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0013] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0014] The utility model has the advantages of the following:

[0015] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0016] The utility model further sets up, the outside of leakproof butt joint is fixed with sleeve groove, and the rubber ring is fixedly sleeved outside the sleeve groove.

[0017] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a structural schematic diagram of a leakage-proof graphite heat exchanger for a phosphoric acid workshop.

[0020] Figure 2 It is an exploded side view of the graphite heat exchange block and the butt joint sleeve frame.

[0021] Figure 3 It is Figure 2 It is a local enlarged view of the A area.

[0022] Figure 4 It is an exploded schematic diagram of the collecting pipeline and the graphite heat exchange block.

[0023] Figure 5 It is an exploded schematic diagram of the phosphoric acid collecting pipeline and the graphite heat exchange block.

[0024] In the drawings, the components represented by each reference numeral are listed as follows:

[0025] 1-graphite heat exchange block, 101-phosphoric acid passage, 101a-inlet liquid spout, 101b-butt joint groove, 102-leakage-proof butt joint, 102a-sleeve groove, 102a-1-rubber ring, 103-butt joint sleeve frame, 104-heat exchange liquid passage, 104a-collecting pipeline, 2-pull frame, 201-pull ear, 202-pull screw, 202a-pull nut, 203-phosphoric acid collecting pipeline, 203a-phosphoric acid passage butt joint hole, 203b-collecting pipeline spout. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0027] Please refer to Figures 1 to 3The utility model discloses a phosphoric acid workshop is with the leakage -proof graphite heat exchanger, including a group of graphite heat exchange block 1 and two opposite pull frame 2, install the leakage -proof butt joint 102 through the phosphoric acid passageway 101 between two graphite heat exchange blocks 1, when the phosphoric acid flows from one graphite heat exchange block 1 to another graphite heat exchange block 1, prevent the phosphoric acid from leaking between two graphite heat exchange blocks 1 under the action of leakage -proof butt joint 102, through the opposite pull frame 2 of fixed installation of graphite heat exchange block 1 group both ends respectively, and two opposite pull frame 2 are pulled tightly by opposite pull screw rod 202, thereby make each graphite heat exchange block 1 between leakage -proof butt joint 102 is tight fastening, prevent leakage -proof butt joint 102 in the port installation of phosphoric acid passageway 101 loose and lead to the leakage of phosphoric acid at the port.

[0028] Specifically, graphite heat exchange block 1 longitudinal horizontal side surface is provided with a group of phosphoric acid passageways 101, the phosphoric acid passageway 101 on each graphite heat exchange block 1 is connected to each other, two opposite pull frame 2 are fixedly installed at the both ends of graphite heat exchange block 1 group, and the outer side frame surface of opposite pull frame 2 is fixedly provided with opposite pull ear 201, the opposite pull ear 201 on two opposite pull frame 2 is connected with opposite pull screw rod 202 through penetration, and opposite pull screw rod 202 is threadedly sleeved with opposite pull nut 202a, and leakage -proof butt joint 102 is installed between the butt joint of each phosphoric acid passageway 101.

[0029] Further, the liquid inlet end of the phosphoric acid passageway 101 is provided with a liquid inlet taper 101a, which is gradually converging from outside to inside.

[0030] Further, graphite heat exchange block 1 is provided with an abutment taper groove 101b outside the liquid outlet end of the phosphoric acid passageway 101, which is gradually converging from inside to outside.

[0031] Further, one end of the leakage -proof butt joint 102 is an outlet that gradually converges from inside to outside, the other end of the leakage -proof butt joint 102 is an inlet that gradually expands from inside to outside, the outlet of the leakage -proof butt joint 102 is connected to the liquid inlet taper 101a of the phosphoric acid passageway 101, and the inlet of the leakage -proof butt joint 102 is connected to the abutment taper groove 101b of the graphite heat exchange block 1. When the phosphoric acid is discharged from the phosphoric acid passageway 101, it passes through the inlet of the leakage -proof butt joint 102, and the inside of the inlet of the leakage -proof butt joint 102 is gradually converging, so that the phosphoric acid does not exude from the gap between the leakage -proof butt joint 102 and the abutment taper groove 101b when flowing forward. When the phosphoric acid flows out of the outlet of the leakage -proof butt joint 102, the outside of the outlet of the leakage -proof butt joint 102 is gradually converging, and the liquid inlet end of the phosphoric acid passageway 101 is a liquid inlet taper 101a that gradually converges inward, so that the phosphoric acid does not exude from the gap between the leakage -proof butt joint 102 and the abutment taper groove 101b when being transported forward, thereby realizing that the phosphoric acid does not leak when crossing each graphite heat exchange block 1.

[0032] Further, the leakproof butt joint 102 is externally fixed with a sleeve groove 102a, and a rubber ring 102a-1 is fixedly sleeved outside the sleeve groove 102a, so that each graphite heat exchange block 1 will not be damaged due to excessive pressure during butt joint, and the installation stability of the leakproof butt joint 101 is improved.

[0033] Further, a butt joint sleeve frame 103 is installed between each graphite heat exchange block 1, a group of round holes are formed on the plate surface of the butt joint sleeve frame 103, and the rubber ring 102a-1 externally sleeved on each leakproof butt joint 102 is fixedly sleeved in the round holes on the plate surface of the butt joint sleeve frame 103, for framing each leakproof butt joint 102.

[0034] The operation process of the embodiment is as follows:

[0035] When the phosphoric acid flows from one graphite heat exchange block 1 to another graphite heat exchange block 1 and passes through the leakproof butt joint 102, the inside of the liquid inlet of the leakproof butt joint 102 is gradually tapered, so that the phosphoric acid will not exude from the gap between the leakproof butt joint 102 and the butt joint taper groove 101b when flowing forward; when the phosphoric acid flows out of the liquid outlet of the leakproof butt joint 102, the outside of the liquid outlet of the leakproof butt joint 102 is gradually tapered, and the liquid inlet end of the phosphoric acid channel 101 is a gradually tapered liquid inlet taper 101a, so that the phosphoric acid will not exude from the gap between the leakproof butt joint 102 and the butt joint taper groove 101b when being transported forward, thereby realizing that the phosphoric acid will not leak when crossing each graphite heat exchange block 1. Embodiment 2

[0036] Please refer to Figures 1 to 5 On the basis of embodiment 1, the graphite heat exchange block 1 is horizontally installed with a collection pipeline 104a on each lateral side, and the graphite heat exchange block 1 is horizontally installed with a phosphoric acid collection pipe 203 on each longitudinal side, the heat exchange liquid is collected and circulated through the collection pipeline 104a, the phosphoric acid is divided and flows into each phosphoric acid channel 101 on one side of the graphite heat exchange block 1 through the phosphoric acid collection pipe 203, and the phosphoric acid at the outlet end of each phosphoric acid channel 101 is collected.

[0037] Specifically, a group of heat exchange liquid channels 104 are formed through the lateral side of the graphite heat exchange block 1, each group of horizontal heat exchange liquid channels 104 is alternately arranged with each group of horizontal phosphoric acid channels 101, and the collection pipeline 104a is fixedly connected to the end surface of the graphite heat exchange block 1 at both ends of the heat exchange liquid channel 104, and the collection pipeline 104a is in butt joint communication with each heat exchange liquid channel 104.

[0038] Further, two opposite pulling frames 2 are fixedly installed on the side frame surface of the graphite heat exchange block 1, and a phosphoric acid collecting pipe 203 is arranged on the side of the graphite heat exchange block 1 away from the pulling frame 2, and a group of phosphoric acid passage butt joints 203a are arranged on the side of the phosphoric acid collecting pipe 203 close to the graphite heat exchange block 1, each phosphoric acid passage butt joint 203a is in one-to-one butt joint communication with the phosphoric acid passage 101 port on the side of the graphite heat exchange block 1, and a collecting pipe port 203b is arranged on the end of the phosphoric acid collecting pipe 203 away from the graphite heat exchange block 1.

[0039] The operation process of the embodiment is as follows:

[0040] The phosphoric acid is introduced into each phosphoric acid passage 101 in the graphite heat exchange block 1 from one phosphoric acid collecting pipe 203, and when the phosphoric acid passes through each graphite heat exchange block 1 and exchanges heat with the heat exchange liquid in the heat exchange liquid pipe 104, the phosphoric acid is discharged from the end of the phosphoric acid passage 101 of the graphite heat exchange block 1 group and introduced into the phosphoric acid collecting pipe 203.

[0041] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A leak-proof graphite heat exchanger for phosphoric acid plants, characterized in that: The application relates to a phosphoric acid heat exchange device, which comprises a group of graphite heat exchange blocks (1) and two pull frames (2), a group of phosphoric acid channels (101) are longitudinally and horizontally arranged on the side surface of each graphite heat exchange block (1), the phosphoric acid channels (101) on the graphite heat exchange blocks (1) are connected in a butt joint mode, two pull frames (2) are fixedly arranged at the two ends of the group of graphite heat exchange blocks (1), pull ears (201) are arranged on the outer side of the pull frames (2), a pull screw (202) is arranged between the pull ears (201) of the two pull frames (2), a pull nut (202a) is sleeved on the pull screw (202), and a leakproof butt joint (102) is arranged between the butt joint positions of the phosphoric acid channels (101).

2. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 1, characterized in that: The liquid inlet end of the phosphoric acid channel (101) is provided with a liquid inlet taper (101a) which is gradually narrowed from outside to inside.

3. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 2, characterized in that: The liquid outlet end of the graphite heat exchange block (1) is provided with a butt joint taper groove (101b) which is gradually widened from inside to outside.

4. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 3, characterized in that: One end of the leakproof butt joint (102) is a liquid outlet which is gradually widened from inside to outside, the other end of the leakproof butt joint (102) is a liquid inlet which is gradually widened from inside to outside, the liquid outlet of the leakproof butt joint (102) is connected with the liquid inlet taper (101a) of the phosphoric acid channel (101), and the liquid inlet of the leakproof butt joint (102) is connected with the butt joint taper groove (101b) of the graphite heat exchange block (1).

5. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 4, characterized in that: The leakproof butt joint (102) is provided with a sleeve groove (102a) on the outer side, and a rubber ring (102a-1) is fixedly sleeved on the outer side of the sleeve groove (102a).

6. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 5, characterized in that: A butt joint sleeve frame (103) is arranged between the graphite heat exchange blocks (1), a group of round holes are arranged on the plate surface of the butt joint sleeve frame (103), and the rubber ring (102a-1) on the outer side of the leakproof butt joint (102) is fixedly sleeved in the round hole on the plate surface of the butt joint sleeve frame (103).

7. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 1, characterized in that: A group of heat exchange liquid channels (104) are arranged on the horizontal side of the graphite heat exchange block (1), each horizontal row of the heat exchange liquid channels (104) is arranged alternately with each horizontal row of the phosphoric acid channels (101), and a collecting pipeline (104a) is fixedly connected to the end surface of the graphite heat exchange block (1) at the two ends of the heat exchange liquid channels (104).

8. A leak-proof graphite heat exchanger for phosphoric acid plant according to claim 7, characterized in that: The side surface of the pull frame (2) away from the graphite heat exchange block (1) is fixedly provided with a phosphoric acid collecting pipe (203), the side surface of the phosphoric acid collecting pipe (203) close to the graphite heat exchange block (1) is provided with a group of phosphoric acid channel butt joint holes (203a), the phosphoric acid channel butt joint holes (203a) are connected with the ports of the phosphoric acid channels (101) on the side surface of the graphite heat exchange block (1) in a one-to-one butt joint mode, and the end of the phosphoric acid collecting pipe (203) away from the graphite heat exchange block (1) is provided with a collecting pipe port (203b).

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