Tail gas treatment device for calcium formate production

Abstract

The utility model discloses a tail gas treatment device for calcium formate production. The tail gas treatment device comprises a heating bin, a spraying bin and a filtering bin, the heating assembly is arranged outside the heating bin; the spraying assembly is arranged in the spraying bin; the filtering assembly is arranged in the filtering bin; wherein the heating assembly comprises an insulating rod and an electric heating wire, the spraying assembly comprises a connecting pipe which is inserted into the top of the spraying bin in a sealed mode, the lower end of the connecting pipe is located in the spraying bin, and a spraying head with multiple sets of atomizing nozzles is installed at the lower end of the connecting pipe; the filter assembly comprises a first filter screen plate and a second filter screen plate, and the first filter screen plate and the second filter screen plate are sequentially arranged in the filter bin from top to bottom. The tail gas generated in calcium formate preparation can be decomposed and filtered, the situation that untreated positions are directly discharged to pollute the environment is avoided, and high practical value is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment related to calcium formate production, in particular to an exhaust gas treatment device for calcium formate production. Background Art

[0002] Calcium formate can be used as an acidulant, replacing citric acid and fumaric acid, and as a preservative and mildew inhibitor, replacing calcium propionate. It is suitable for use in various animal feeds, preventing diarrhea and aiding digestion and absorption. It is also widely used in the food, chemical, building materials, leather, and petroleum industries. Adding it to cement can accelerate its hardening and shorten its setting time. Calcium formate can also be taken orally to treat calcium deficiency. Most calcium supplements on the market are made with it. Calcium formate is also an ideal crop growth regulator.

[0003] After searching, the Chinese patent application number is CN201810421208.9, which relates to a method for preparing calcium formate. The method comprises the following steps: (1) reacting CO with a water-soluble organic alkali solution to obtain a formic acid organic alkali salt solution; (2) adding lime milk to the formic acid organic alkali salt solution obtained in step (1) to react, thereby obtaining organic alkali vapor in the gas phase and a calcium formate solution in the liquid phase; (3) filtering, concentrating, and drying the calcium formate solution obtained in step (2). The method utilizes a water-soluble organic alkali as a circulating medium to indirectly carbonylate Ca(OH)2 to synthesize calcium formate. The method has low production cost, simple process, and is easy to implement on a large scale and continuous basis. The obtained calcium formate product is of high quality and has strong market competitiveness.

[0004] However, calcium formate produces tail gas during the preparation process. If the tail gas is directly discharged into the atmosphere, it will cause serious pollution to the environment. Therefore, we need to propose a tail gas treatment device for calcium formate production. Utility Model Content

[0005] The purpose of the utility model is to provide an exhaust gas treatment device for calcium formate production. The device has a simple structure and is easy to use. Through the cooperation of a heating chamber, a spray chamber and a filtering chamber, the exhaust gas generated by the preparation of calcium formate can be decomposed and filtered, thereby avoiding direct discharge of untreated exhaust gas to cause environmental pollution. The device has high practical value and solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A tail gas treatment device for calcium formate production, comprising:

[0008] Heating chamber, spraying chamber and filtering chamber;

[0009] One end of the heating chamber is provided with an air inlet pipe, the other end of the heating chamber is connected to the inner cavity of the spray chamber through a pipe, the other side of the spray chamber is connected to the filter chamber through a pipe, and the lower end of the outer wall of the filter chamber is provided with an air outlet pipe;

[0010] It also includes a heating component arranged outside the heating chamber, a spray component arranged in the spray chamber, and a filtering component arranged in the filtering chamber;

[0011] Wherein, the heating assembly comprises an insulating rod and an electric heating wire, and the electric heating wire is wound around the insulating rod;

[0012] The spray assembly includes a connecting pipe sealed and plugged into the top of the spray bin, the upper end of the connecting pipe is used to connect to the tap water pipe, the lower end of the connecting pipe is located in the spray bin and is equipped with a spray head with multiple groups of atomizing nozzles;

[0013] The filter assembly includes a first filter screen plate and a second filter screen plate, and the first filter screen plate and the second filter screen plate are sequentially arranged from top to bottom in the filter bin.

[0014] Preferably, a jacket is provided on the outside of the heating chamber, and a plurality of groups of insulating rods are provided around the inner cavity of the jacket, and the electric heating wires correspond to the insulating rods one by one.

[0015] Preferably, it further comprises a collection box for collecting waste water, wherein brackets are symmetrically welded on the outer wall of the collection box, and the upper end of the bracket is welded to the outer wall of the spray bin.

[0016] Preferably, the lower end of the spray bin is integrally formed with a funnel-shaped guide bucket, the lower end of the guide bucket is provided with a drainage channel, the lower end of the drainage channel extends to the inner bottom of the collection box and the lower end of the drainage channel does not contact the inner bottom of the collection box.

[0017] Preferably, the inner cavity of the filter chamber is provided with two groups of card seats, the card seats are provided with card slots, the outsides of the first filter screen plate and the second filter screen plate are both provided with frames, and the outer wall of the filter chamber is provided with a notch for inserting the frame.

[0018] Preferably, a baffle is provided on one side of the frame, a lifting ring is provided on the outer wall of the baffle, and the frame seal is inserted into the notch and the card slot.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model is provided with a heating chamber, a spray chamber and a filtering chamber, wherein a heating component is provided at the heating chamber, a spray component is provided at the spray chamber, and a filtering component is provided at the filtering chamber. The heating chamber, the spray chamber and the filtering chamber are connected by a pipeline. The utility model has a simple structure and is easy to use. The tail gas generated by the preparation of calcium formate can be decomposed and filtered through the cooperation of the heating chamber, the spray chamber and the filtering chamber, thereby avoiding direct discharge of the tail gas without treatment to cause pollution to the environment, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the heating chamber of the utility model;

[0023] Figure 3 This is a structural diagram of the spray bin of the utility model;

[0024] Figure 4 This is a structural diagram of the filter bin of the utility model.

[0025] In the figure: 1. Heating chamber; 2. Spray chamber; 3. Filter chamber; 4. Air inlet pipe; 5. Air outlet pipe; 6. Catalytic mesh plate; 7. Jacket; 8. Insulating rod; 9. Electric heating wire; 10. Collecting box; 11. Connecting pipe; 12. Spray head; 13. Diversion bucket; 14. Drainage channel; 15. Base; 16. Slot; 17. First filter mesh plate; 18. Frame; 19. Baffle; 20. Pull ring; 21. Second filter mesh plate; 22. Notch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-4 , the utility model provides a technical solution:

[0028] A tail gas treatment device for calcium formate production, comprising:

[0029] Heating chamber 1, spray chamber 2 and filtering chamber 3; wherein, one end of the heating chamber 1 is provided with an air inlet pipe 4, the other end of the heating chamber 1 is connected to the inner cavity of the spray chamber 2 through a pipe, the other side of the spray chamber 2 is connected to the filtering chamber 3 through a pipe, and the lower end of the outer wall of the filtering chamber 3 is provided with an air outlet pipe 5;

[0030] It also includes a heating component arranged outside the heating chamber 1, a spray component arranged in the spray chamber 2, and a filtering component arranged in the filtering chamber 3;

[0031] Among them, the heating assembly includes an insulating rod 8 and an electric heating wire 9, and the electric heating wire 9 is wound around the insulating rod 8; a jacket 7 is provided on the outside of the heating chamber 1, and multiple groups of insulating rods 8 are arranged around the inner cavity of the jacket 7, and the electric heating wire 9 corresponds to the insulating rod 8 one by one.

[0032] When in use, the exhaust gas enters the interior of the heating chamber 1 through the air inlet pipe 4, and the electric heating wire 9 works to heat the exhaust gas in the inner cavity of the heating chamber 1. In this process, the formic acid vapor contained in the exhaust gas decomposes at high temperature. When heated to above 160 degrees Celsius, it decomposes and releases carbon dioxide and water (and possibly a small amount of hydrogen), thereby effectively treating the formic acid vapor in the exhaust gas.

[0033] More preferably, a catalytic mesh plate 6 can be provided in the inner cavity of the heating chamber 1. The catalytic mesh plate 6 can be provided with Pt as a catalyst, which can effectively decompose formic acid at a lower temperature and pressure to improve the decomposition efficiency of formic acid vapor.

[0034] See also Figure 3 :

[0035] The spray assembly includes a connecting pipe 11 that is sealed and plugged into the top of the spray chamber 2. The upper end of the connecting pipe 11 is used to connect to the tap water pipe. The lower end of the connecting pipe 11 is located in the spray chamber 2 and is equipped with a spray head 12 with multiple groups of atomizing nozzles.

[0036] During use, the exhaust gas after heat treatment enters the spray chamber 2 through the pipeline. After the connecting pipe 11 at the upper end of the spray head 12 is connected to the water pipe, the exhaust gas is sprayed through the atomizing nozzle, which can fully contact the gas and fine particles in the exhaust gas, further remove impurities and reduce the exhaust temperature;

[0037] Furthermore, the system includes a collection tank 10 for collecting wastewater. Brackets are symmetrically welded to the outer wall of the collection tank 10, and the upper ends of the brackets are welded to the outer wall of the spray tank 2. A funnel-shaped diversion hopper 13 is integrally formed at the lower end of the spray tank 2. The lower end of the diversion hopper 13 is provided with a drainage channel 14. The lower end of the drainage channel 14 extends to the inner bottom of the collection tank 10 and does not contact the lower end of the drainage channel 14.

[0038] The wastewater generated by spraying is diverted through the diversion bucket 13 and then enters the collection box 10 through the drainage channel 14 for unified collection for subsequent treatment. Moreover, since the drainage channel 14 extends to the bottom of the collection box 10, this design can ensure the collection of wastewater while preventing exhaust gas from overflowing through the drainage channel 14.

[0039] See also Figure 4 :

[0040] The filter assembly includes a first filter screen plate 17 and a second filter screen plate 21 , and the first filter screen plate 17 and the second filter screen plate 21 are sequentially arranged from top to bottom in the filter chamber 3 .

[0041] When in use, the exhaust gas after spraying treatment enters the filter chamber 3 through the pipeline, is filtered by the first filter plate 17 and the second filter plate 21, and is discharged through the outlet pipe 5;

[0042] Specifically, the first filter screen 17 is configured as a filter screen made of glass fiber, which can efficiently filter tiny particles and oil mist in the exhaust gas;

[0043] The second filter plate 21 is configured as a filter plate made of porous activated carbon, which can remove volatile organic compounds (VOCs) and other harmful gases in the exhaust gas by utilizing the strong adsorption capacity of the activated carbon.

[0044] For further information, see Figure 4 :

[0045] The inner cavity of the filter chamber 3 is provided with two sets of holders 15, each of which is provided with a slot 16. A frame 18 is provided on the outside of the first filter panel 17 and the second filter panel 21. A notch 22 for inserting the frame 18 is provided on the outer wall of the filter chamber 3. A baffle 19 is provided on one side of the frame 18, and a lifting ring 20 is provided on the outer wall of the baffle 19. The frame 18 is sealed and inserted into the notch 22 and the slot 16.

[0046] By setting a frame 18 with a baffle 19 on the outside of the first filter panel 17 and the second filter panel 21, and setting a base 15 with a slot 16 in the filter chamber 3, the user can use the pull ring 20 to insert the filter panel through the notch 22 on the outside of the filter chamber 3 into the slot 16 of the base 15. This design can facilitate the quick and convenient installation, use, disassembly and replacement of the first filter panel 17 and the second filter panel 21, and is convenient for long-term use and maintenance of the equipment.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tail gas treatment device for calcium formate production, characterized in that: include: Heating chamber (1), spraying chamber (2) and filtering chamber (3); One end of the heating chamber (1) is provided with an air inlet pipe (4), the other end of the heating chamber (1) is connected to the inner cavity of the spray chamber (2) through a pipe, the other side of the spray chamber (2) is connected to the filter chamber (3) through a pipe, and the lower end of the outer wall of the filter chamber (3) is provided with an air outlet pipe (5); It also includes a heating component arranged outside the heating chamber (1), a spraying component arranged in the spraying chamber (2), and a filtering component arranged in the filtering chamber (3); The heating assembly comprises an insulating rod (8) and an electric heating wire (9), wherein the electric heating wire (9) is wound around the insulating rod (8); The spray assembly comprises a connecting pipe (11) sealed and plugged into the top of the spray chamber (2); the upper end of the connecting pipe (11) is used to connect to a tap water pipe; the lower end of the connecting pipe (11) is located in the spray chamber (2); and a spray head (12) with multiple groups of atomizing nozzles is installed at the lower end of the connecting pipe (11); The filter assembly comprises a first filter screen plate (17) and a second filter screen plate (21), and the first filter screen plate (17) and the second filter screen plate (21) are arranged in sequence from top to bottom in the filter chamber (3).

2. The tail gas treatment device for calcium formate production according to claim 1, wherein: A jacket (7) is provided on the outside of the heating chamber (1), and a plurality of groups of insulating rods (8) are provided around the inner cavity of the jacket (7), and the electric heating wires (9) and the insulating rods (8) correspond to each other one by one.

3. The tail gas treatment device for calcium formate production according to claim 1, wherein: It also includes a collection box (10) for collecting wastewater, wherein brackets are symmetrically welded on the outer wall of the collection box (10), and the upper end of the bracket is welded to the outer wall of the spray chamber (2).

4. The tail gas treatment device for calcium formate production according to claim 3, wherein: The lower end of the spray bin (2) is integrally formed with a funnel-shaped diversion hopper (13), and the lower end of the diversion hopper (13) is provided with a drainage channel (14). The lower end of the drainage channel (14) extends to the inner bottom of the collection box (10) and the lower end of the drainage channel (14) does not contact the inner bottom of the collection box (10).

5. The tail gas treatment device for calcium formate production according to claim 1, wherein: The inner cavity of the filter chamber (3) is provided with two groups of card seats (15), the card seats (15) are provided with card slots (16), the outsides of the first filter screen plate (17) and the second filter screen plate (21) are both provided with frames (18), and the outer wall of the filter chamber (3) is provided with a notch (22) for inserting the frame (18).

6. The tail gas treatment device for calcium formate production according to claim 5, characterized in that: A baffle (19) is provided on one side of the frame (18), a lifting ring (20) is provided on the outer wall of the baffle (19), and the frame (18) is sealed and plugged into the notch (22) and the card slot (16).

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