Formaldehyde oxidizer with outlet waste heat recovery structure

Abstract

The utility model belongs to the field of chemical production, and particularly relates to a formaldehyde oxidizer with an outlet waste heat recovery structure, which comprises a bottom plate, two sides of the top of the bottom plate are respectively and fixedly connected with an oxidizer body and a filter box, and the right side of the top of the oxidizer body is communicated with an exhaust fan. The top of the exhaust fan communicates with a first connecting pipe, the left side of the top of the filter box communicates with a second connecting pipe, the inner wall of the filter box is fixedly connected with a filter screen, and the bottom of the right side of the filter box communicates with an exhaust pipe. By arranging the waste heat recovery mechanism, water stored in a recovery box can be heated through gas conveyed in a coiled pipe, the coiled pipe can be adjusted in an up-and-down reciprocating mode, the contact area between the water and the coiled pipe is increased, meanwhile, the water is turned over through the coiled pipe moving up and down, and therefore the water recycling efficiency is improved. And the phenomenon that the temperature is not uniform due to heat accumulation in water is avoided, so that the water can be uniformly heated, and the waste heat recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of chemical production, in particular to a formaldehyde oxidizer with an outlet waste heat recovery structure. Background Technique

[0002] Formaldehyde oxidation equipment generally refers to devices used for formaldehyde oxidation reactions, such as formaldehyde oxidation towers, etc. Under specific conditions, such as the presence of a catalyst and a certain temperature, these devices promote the reaction of formaldehyde with oxygen. The products after formaldehyde oxidation depend on the reaction conditions and the use of the catalyst. Under the catalytic action of metals or metal oxides, formaldehyde oxidation can generate, and under more intense oxidation conditions, such as high temperature or the action of a catalyst, formaldehyde will ultimately be oxidized to carbon dioxide and water.

[0003] During the use of existing formaldehyde oxidizers, high-temperature gases will be generated. The direct discharge of these gases will affect the environment, and at the same time, the heat energy in the high-temperature gases cannot be recovered, resulting in a great waste of resources. Moreover, the traditional waste heat recovery structure cannot make water fully contact with the heat conduction pipes, which will lead to uneven heating of the water and reduce the waste heat recovery efficiency. Therefore, in view of the above problems, a formaldehyde oxidizer with an outlet waste heat recovery structure is proposed. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve the problem that the formaldehyde oxidizer in the prior art cannot recover waste heat, the utility model proposes a formaldehyde oxidizer with an outlet waste heat recovery structure.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a formaldehyde oxidizer with an outlet waste heat recovery structure, including a bottom plate. On both sides of the top of the bottom plate, a formaldehyde oxidizer body and a filter box are respectively fixedly connected. On the right side of the top of the formaldehyde oxidizer body, an exhaust fan is communicated. On the top of the exhaust fan, a first connecting pipe is communicated. On the left side of the top of the filter box, a second connecting pipe is communicated. A filter screen is fixedly connected to the inner wall of the filter box. At the bottom of the right side of the filter box, an exhaust pipe is communicated. A waste heat recovery mechanism is arranged between the formaldehyde oxidizer body and the filter box.

[0006] The waste heat recovery mechanism includes a recovery box. The bottom of the recovery box is fixedly connected to the bottom plate. A serpentine pipe is arranged in the inner cavity of the recovery box. The two ends of the serpentine pipe are respectively communicated with a first lifting pipe and a second lifting pipe. The top of the first lifting pipe penetrates through the recovery box and extends into the inner cavity of the first connecting pipe. The top of the second lifting pipe penetrates through the recovery box and extends into the inner cavity of the second connecting pipe. Lifting sleeves are fixedly connected to the surfaces of the first lifting pipe and the second lifting pipe. One side of the lifting sleeve is fixedly connected to a lifting frame. A lifting plate is fixedly connected between the tops of the two lifting frames. An installation plate is fixedly connected to the top of the recovery box. A motor is fixedly connected to the rear side of the installation plate. The front side of the output end of the motor is fixedly connected to a rotating rod. The front end of the rotating rod penetrates through the front side of the installation plate and is sleeved with a cam.

[0007] Preferably, the top of the cam contacts the lifting plate, and limiting strips are fixedly connected to the bottom of the lifting plate and on the front side and the rear side of the cam.

[0008] Preferably, the front end of the rotating rod is movably connected to a positioning plate through a bearing. The bottom of the positioning plate is fixedly connected to the recovery box. The surface of the rotating rod is movably connected to the installation plate through a bearing.

[0009] Preferably, sliding rods are fixedly connected to the top of the recovery box and on the front side and the rear side of the lifting sleeve. Sliding sleeves are sleeved on the surfaces of the sliding rods. The opposite sides of the two sliding sleeves are fixedly connected to the lifting sleeve.

[0010] Preferably, through holes are formed in both sides of the top of the recovery box. Strengthening blocks are fixedly connected to both sides of the installation plate. The bottom of the strengthening block is fixedly connected to the recovery box.

[0011] Preferably, a top plate is fixedly connected to the top of the front side of the installation plate. A plurality of stoppers are arranged in sequence from left to right on the top of the top plate. A limiting rod is fixedly connected to the bottom of the stopper. The bottom of the limiting rod penetrates through the top plate and is fixedly connected to the lifting plate.

[0012] Preferably, a spring is sleeved on the surface of the limiting rod and at the bottom of the top plate. The top and the bottom of the spring are respectively fixedly connected to the top plate and the lifting plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. By setting the waste heat recovery mechanism, the present utility model can not only heat the water stored in the recovery box through the gas conveyed in the serpentine pipe, but also move the serpentine pipe up and down reciprocally for adjustment, increasing the contact area between the water and the serpentine pipe. At the same time, the water is turned over by the serpentine pipe moving up and down, avoiding the phenomenon of uneven temperature caused by heat accumulation in the water, enabling the water to be heated evenly, and improving the efficiency of waste heat recovery.

[0015] 2. By providing a limiting strip, the present utility model can limit the positions of the cam and the lifting plate. By providing a cam, it can be used to adjust the position of the lifting plate. By providing a positioning plate, the stability of the rotating rod can be improved. By providing a bearing, it is convenient for the rotation of the rotating rod. By providing a sliding rod, the moving range of the sliding sleeve can be limited. By providing a sliding rod and a sliding sleeve, the stability of the movement of the lifting sleeve can be improved. By providing a through hole, it is convenient for the installation and use of the first lifting pipe and the second lifting pipe. By providing a strengthening block, the stability of the mounting plate can be improved. By providing a top plate and a limiting rod, the stability of the movement of the lifting plate can be improved. By providing a stop block, it can prevent the limiting rod from disengaging from the top plate. By providing a spring, it is convenient for the lifting plate to move downward for resetting and can also play a buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of a formaldehyde oxidizer with an outlet waste heat recovery structure according to the present utility model;

[0018] Figure 2 Structural cross-sectional view of the waste heat recovery mechanism according to the present utility model;

[0019] Figure 3 Structural cross-sectional view of the filter box according to the present utility model;

[0020] Figure 4 Structural schematic diagram of the lifting plate and the lifting sleeve according to the present utility model;

[0021] Figure 5 Left view of the mounting plate and the cam according to the present utility model.

[0022] In the figure: 1, bottom plate; 2, oxidizer body; 3, filter box; 4, exhaust fan; 5, first connecting pipe; 6, second connecting pipe; 7, filter screen; 8, exhaust pipe; 9, waste heat recovery mechanism; 901, spring; 902, recovery box; 903, serpentine pipe; 904, first lifting pipe; 905, second lifting pipe; 906, lifting sleeve; 907, lifting frame; 908, lifting plate; 909, mounting plate; 910, motor; 911, rotating rod; 912, cam; 913, limiting strip; 914, positioning plate; 915, sliding rod; 916, sliding sleeve; 917, strengthening block; 918, top plate; 919, stop block; 920, limiting rod. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] The following is a further detailed description of this application Figures 1-4

[0025] The embodiment of this application discloses a formaldehyde oxidizer with an outlet waste heat recovery structure. Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a formaldehyde oxidizer with an outlet waste heat recovery structure includes a bottom plate 1. On both sides of the top of the bottom plate 1, an oxidizer body 2 and a filter box 3 are respectively fixedly connected. The right side of the top of the oxidizer body 2 is communicated with an exhaust fan 4. The top of the exhaust fan 4 is communicated with a first connecting pipe 5. The left side of the top of the filter box 3 is communicated with a second connecting pipe 6. A filter screen 7 is fixedly connected to the inner wall of the filter box 3. The bottom of the right side of the filter box 3 is communicated with an exhaust pipe 8. A waste heat recovery mechanism 9 is arranged between the oxidizer body 2 and the filter box 3;

[0026] ​The waste heat recovery mechanism 9 includes a recovery box 902. The bottom of the recovery box 902 is fixedly connected to the bottom plate 1. A serpentine tube 903 is arranged in the inner cavity of the recovery box 902. The two ends of the serpentine tube 903 are respectively communicated with a first lifting tube 904 and a second lifting tube 905. The top of the first lifting tube 904 penetrates through the recovery box 902 and extends into the inner cavity of the first connecting tube 5. The top of the second lifting tube 905 penetrates through the recovery box 902 and extends into the inner cavity of the second connecting tube 6. Lifting sleeves 906 are fixedly connected to the surfaces of the first lifting tube 904 and the second lifting tube 905. A lifting frame 907 is fixedly connected to one side of the lifting sleeve 906. A lifting plate 908 is fixedly connected between the tops of the two lifting frames 907. An installation plate 909 is fixedly connected to the top of the recovery box 902. A motor 910 is fixedly connected to the rear side of the installation plate 909. A rotating rod 911 is fixedly connected to the front side of the output end of the motor 910. The front end of the rotating rod 911 penetrates through the front side of the installation plate 909 and is sleeved with a cam 912. By setting the waste heat recovery mechanism 9, not only can the water stored in the recovery box 902 be heated by the gas conveyed in the serpentine tube 903, but also the serpentine tube 903 can be reciprocally moved up and down for adjustment, increasing the contact area between the water and the serpentine tube 903. At the same time, the water is flipped by the serpentine tube 903 moving up and down, avoiding the phenomenon of uneven temperature caused by heat accumulation in the water, enabling the water to be heated evenly and improving the efficiency of waste heat recovery.

[0027] Refer to Figure 2 , Figure 4 and Figure 5 , the top of the cam 912 contacts the lifting plate 908. Limiting bars 913 are fixedly connected to the bottom of the lifting plate 908 and on the front side and rear side of the cam 912. By setting the limiting bars 913, the positions of the cam 912 and the lifting plate 908 can be restricted. By setting the cam 912, the position of the lifting plate 908 can be adjusted.

[0028] Refer to Figure 2 and Figure 5 , the front end of the rotating rod 911 is movably connected to a positioning plate 914 through a bearing. The bottom of the positioning plate 914 is fixedly connected to the recovery box 902. The surface of the rotating rod 911 is movably connected to the installation plate 909 through a bearing. By setting the positioning plate 914, the stability of the rotating rod 911 can be improved. By setting the bearing, the rotation of the rotating rod 911 can be facilitated.

[0029] Refer to Figure 2, on the top of the recycling bin 902 and on the front and rear sides of the lifting sleeve 906, sliding rods 915 are fixedly connected. A sliding sleeve 916 is sleeved on the surface of the sliding rod 915. On the opposite sides of the two sliding sleeves 916, they are fixedly connected to the lifting sleeve 906; by providing the sliding rod 915, the moving range of the sliding sleeve 916 can be restricted, and by providing the sliding rod 915 and the sliding sleeve 916, the moving stability of the lifting sleeve 906 can be improved.

[0030] Refer to Figure 1 , Figure 2 and Figure 5 , through holes are provided on both sides of the top of the recycling bin 902. On both sides of the mounting plate 909, reinforcing blocks 917 are fixedly connected. The bottom of the reinforcing block 917 is fixedly connected to the recycling bin 902; by providing the through holes, the installation and use of the first lifting pipe 904 and the second lifting pipe 905 can be facilitated, and by providing the reinforcing blocks 917, the stability of the mounting plate 909 can be improved.

[0031] Refer to Figure 2 and Figure 4 , on the top of the front side of the mounting plate 909, a top plate 918 is fixedly connected. From left to right on the top of the top plate 918, a number of stoppers 919 are arranged in sequence. The bottom of the stopper 919 is fixedly connected to a limiting rod 920. The bottom of the limiting rod 920 passes through the top plate 918 and is fixedly connected to the lifting plate 908; by providing the top plate 918 and the limiting rod 920, the moving stability of the lifting plate 908 can be improved, and by providing the stoppers 919, the limiting rod 920 can be prevented from detaching from the top plate 918.

[0032] Refer to Figure 2 and Figure 4 , a spring 901 is sleeved on the surface of the limiting rod 920 and at the bottom of the top plate 918. The top and bottom of the spring 901 are fixedly connected to the top plate 918 and the lifting plate 908 respectively; by providing the spring 901, the downward movement of the lifting plate 908 for reset can be facilitated, and it can also play a buffering role.

[0033] Working principle: Put the materials to be reacted into the oxidizer body 2. The heater heats the silver catalyst laid on the surface of the tube sheet of the formaldehyde oxidizer to about 600 degrees Celsius. The silver catalyst is the key to the reaction. It promotes the oxidation reaction of methanol and oxygen at high temperatures. Under the action of the silver catalyst, the mixed gas undergoes an oxidation reaction, and methanol is oxidized to form high-temperature gaseous formaldehyde, releasing a large amount of reaction heat. This heat helps to maintain the continuous progress of the reaction. After processing, control the exhaust fan 4 to operate to transport the high-temperature gas in the oxidizer body 2 to the first lifting pipe 904 through the first connecting pipe 5. The gas enters the serpentine pipe 903 after passing through the first lifting plate 908. The gas in the serpentine pipe 903 can heat the water in the recovery tank 902. Subsequently, the gas enters the filter tank 3 through the second lifting pipe 905 and the second connecting pipe 6. After being filtered by the filter screen 7, the gas can be discharged. At the same time, the motor 910 can be started. The operation of the motor 910 drives the cam 912 to rotate through the cooperation of the rotating rod 911. The rotation of the cam 912 drives the lifting plate 908 to move up and down reciprocally through the cooperation of the spring 901. The lifting plate 908 drives the first lifting pipe 904, the second lifting pipe 905, and the serpentine pipe 903 to move up and down reciprocally through the cooperation of the lifting frame 907 and the lifting sleeve 906. The reciprocating movement of the serpentine pipe 903 can not only increase the contact area between the water and the serpentine pipe 903, but also turn the water through the reciprocating movement of the serpentine pipe 903 up and down, avoiding the phenomenon of uneven temperature caused by heat accumulation in the water, enabling the water to be heated evenly, and improving the efficiency of waste heat recovery.

[0034] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A formaldehyde oxidizer with an outlet waste heat recovery structure, characterized in that: It includes a bottom plate (1). On both sides of the top of the bottom plate (1), an oxidizer body (2) and a filter box (3) are respectively fixedly connected. On the right side of the top of the oxidizer body (2), an exhaust fan (4) is communicated. On the top of the exhaust fan (4), a first connecting pipe (5) is communicated. On the left side of the top of the filter box (3), a second connecting pipe (6) is communicated. A filter net (7) is fixedly connected to the inner wall of the filter box (3). At the bottom of the right side of the filter box (3), an exhaust pipe (8) is communicated. A waste heat recovery mechanism (9) is arranged between the oxidizer body (2) and the filter box (3). The waste heat recovery mechanism (9) includes a recovery box (902). The bottom of the recovery box (902) is fixedly connected to the bottom plate (1). A serpentine pipe (903) is arranged in the inner cavity of the recovery box (902). The two ends of the serpentine pipe (903) are respectively communicated with a first lifting pipe (904) and a second lifting pipe (905). The top of the first lifting pipe (904) penetrates through the recovery box (902) and extends into the inner cavity of the first connecting pipe (5). The top of the second lifting pipe (905) penetrates through the recovery box (902) and extends into the inner cavity of the second connecting pipe (6). Lifting sleeves (906) are fixedly connected to the surfaces of the first lifting pipe (904) and the second lifting pipe (905). On one side of the lifting sleeve (906), a lifting frame (907) is fixedly connected. Between the tops of the two lifting frames (907), a lifting plate (908) is fixedly connected. On the top of the recovery box (902), a mounting plate (909) is fixedly connected. On the rear side of the mounting plate (909), a motor (910) is fixedly connected. On the front side of the output end of the motor (910), a rotating rod (911) is fixedly connected. The front end of the rotating rod (911) penetrates through the front side of the mounting plate (909) and is sleeved with a cam (912).

2. The formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 1, characterized in that: The top of the cam (912) contacts the lifting plate (908). On the bottom of the lifting plate (908) and on the front side and the rear side of the cam (912), limiting strips (913) are fixedly connected.

3. The formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 1, characterized in that: The front end of the rotating rod (911) is movably connected through a bearing to a positioning plate (914). The bottom of the positioning plate (914) is fixedly connected to the recovery box (902). The surface of the rotating rod (911) is movably connected to the mounting plate (909) through a bearing.

4. A formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 1, characterized in that: On the top of the recovery box (902) and on the front side and the rear side of the lifting sleeve (906), sliding rods (915) are fixedly connected. Sliding sleeves (916) are sleeved on the surfaces of the sliding rods (915). On the opposite sides of the two sliding sleeves (916), they are fixedly connected to the lifting sleeve (906).

5. A formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 1, characterized in that: On both sides of the top of the recovery box (902), through holes are opened. On both sides of the mounting plate (909), reinforcing blocks (917) are fixedly connected. The bottoms of the reinforcing blocks (917) are fixedly connected to the recovery box (902).

6. The formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 1, characterized in that: At the top of the front side of the mounting plate (909), a top plate (918) is fixedly connected. A number of stoppers (919) are sequentially arranged on the top of the top plate (918) from left to right. A limiting rod (920) is fixedly connected to the bottom of the stopper (919). The bottom of the limiting rod (920) penetrates through the top plate (918) and is fixedly connected to the lifting plate (908).

7. A formaldehyde oxidizer with an outlet waste heat recovery structure according to claim 6, characterized in that: A spring (901) is sleeved on the surface of the limiting rod (920) and at the bottom of the top plate (918). The top and bottom of the spring (901) are respectively fixedly connected to the top plate (918) and the lifting plate (908).

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