Amino pyrazole centrifugal discharge nitrogen protection device

Abstract

The utility model discloses an amino pyrazole centrifugal discharge nitrogen protection device, including air intake subassembly, air intake subassembly's exhaust end is linked with centrifugal discharge machine, and the exhaust end communication of centrifugal discharge machine has the recycling cycle subassembly of recycling, air intake subassembly includes air compressor, the utility model discloses a setting through cycle subassembly, and the gas that exports from centrifugal discharge machine inside is arranged into the inside of condensing box through the exhaust pipe, and most amino pyrazole steam is accumulated with the bottom of condensing box after condensation, and finally amino pyrazole liquid flows into the return flow pipe and recycles again through the liquid discharge pipe, and the gas that handles through condensing box is arranged into the inside of filter box, and after the filtration of filter box, the remaining small amount of amino pyrazole steam and moisture pass through the cycle pipe and are arranged to the inside of compressor, and after pressurization, re -arrange into the inside of nitrogen -generating machine, reduce the working strength of nitrogen -generating machine filtration separation, reduce the environmental pollution of amino pyrazole and improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of aminopyrazole production technology, specifically to an aminopyrazole centrifugal discharge nitrogen protection device. Background Technology

[0002] Aminopyrazole is mostly prepared by solvent crystallization (such as precipitation from ethanol, water, or mixed solvents). Before centrifugation, it is a suspension of aminopyrazole crystals and mother liquor. Therefore, a centrifuge is required for solid-liquid separation. The core component of the centrifuge is a high-speed rotating drum. The centrifugal force generated by the rotation of the drum (which is much greater than gravity) forces the solid and liquid components in the aminopyrazole suspension to separate. The separated aminopyrazole is discharged through a discharge mechanism, while the mother liquor is collected and reused through a reflux pipe. During the solid-liquid separation process, a nitrogen protection device is required to avoid the oxidizing, flammable, and explosive properties of aminopyrazole.

[0003] Existing nitrogen protection devices typically pressurize nitrogen and discharge it into the centrifugal discharge machine through an inlet pipe, quickly expelling the air inside the centrifugal discharge machine and ensuring that aminopyrazole remains under inert gas protection throughout the centrifugation process. However, during use, nitrogen is continuously discharged into the centrifugal discharge machine and directly discharged through the exhaust port, resulting in resource waste. Furthermore, the nitrogen contains aminopyrazole vapor, causing environmental pollution and reducing aminopyrazole production efficiency. Therefore, we need to propose a nitrogen protection device for aminopyrazole centrifugal discharge. Utility Model Content

[0004] The purpose of this invention is to provide a nitrogen protection device for the discharge of aminopyrazole centrifuges. Through the inlet assembly, the compressor is started to pressurize and discharge a large amount of air into the nitrogen generator. The nitrogen generator separates and filters out nitrogen, which is then discharged into a storage tank. During use, the valve of the storage tank is opened, and nitrogen is discharged into the centrifuge through the inlet pipe, thus supplying the centrifuge. Through the circulation assembly, the gas discharged from the centrifuge is discharged into the condenser through the exhaust pipe. Most of the aminopyrazole vapor accumulates at the bottom of the condenser after condensation. Finally, the aminopyrazole liquid flows into the return pipe for recycling through the drain pipe. The gas treated by the condenser is discharged into the filter box. After filtration, the remaining small amount of aminopyrazole vapor and moisture is discharged into the compressor through the circulation pipe. After pressurization, it is discharged back into the nitrogen generator. This reduces the workload of the nitrogen generator's filtration and separation process, avoids environmental pollution from aminopyrazole, and improves production efficiency, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen protection device for aminopyrazole centrifugal discharge, comprising an air inlet assembly, the exhaust end of which is connected to a centrifugal discharge machine, and the exhaust end of the centrifugal discharge machine is connected to a recycling assembly; the air inlet assembly includes an air compressor, the exhaust end of which is connected to a nitrogen generator, the exhaust end of which is connected to a gas storage tank, and the exhaust end of the gas storage tank is connected to the centrifugal discharge machine via an air inlet pipe; the recycling assembly includes an exhaust pipe connected to and installed at the exhaust end of the centrifugal discharge machine, the exhaust end of which is connected to and installed in a condenser box, the bottom of which is connected to a drain pipe, the drain end of which is connected to the return pipe of the centrifugal discharge machine, and a filter box connected to and installed on one side of the condenser box via a connecting pipe, the exhaust end of which is connected to the air inlet of the compressor via a recycling pipe.

[0006] Preferably, several sets of condensing plates are fixedly installed alternately at the top and bottom of the condensing chamber, and air passages are formed between the sets of condensing plates to allow airflow.

[0007] Preferably, the bottom of several condensing plates located at the bottom of the condensing chamber is provided with a connecting groove, through which the condensate flows into the interior of the drain pipe.

[0008] Preferably, the top of the filter box is provided with several sets of concave grooves, and a set of filter plates is movably inserted into each set of concave grooves.

[0009] Preferably, a set of liquid check valves is provided in the middle of the drain pipe, and a gas check valve is provided in the middle of the circulation pipe.

[0010] Preferably, one end of the air inlet pipe is sealed and extends through the interior of the centrifugal discharge machine, and one end of the air inlet pipe is connected to an annular pipe, with several sets of air nozzles evenly connected and installed on one side of the annular pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention, through the setting of a circulation component, allows the gas discharged from inside the centrifugal discharge machine to enter the interior of the condenser through the exhaust pipe. Most of the aminopyrazole vapor accumulates at the bottom of the condenser after condensation, and finally the aminopyrazole liquid flows into the return pipe for recycling through the drain pipe. The gas treated by the condenser is discharged into the interior of the filter box. After being filtered by the filter box, the remaining small amount of aminopyrazole vapor and moisture is discharged into the compressor through the circulation pipe. After being pressurized, it is discharged back into the nitrogen generator. This reduces the workload of the nitrogen generator's filtration and separation, reduces the environmental pollution caused by aminopyrazole, and improves production efficiency.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the installation structure of the circulation component of this utility model;

[0016] Figure 3 This is an exploded view of the recirculation component of this utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the drain pipe of this utility model.

[0018] In the diagram: 1. Intake assembly; 11. Compressor; 12. Nitrogen generator; 13. Gas storage tank; 14. Intake pipe; 15. Circulating pipe; 16. Air nozzle; 2. Centrifugal discharge machine; 3. Circulation assembly; 31. Exhaust pipe; 32. Condenser; 33. Condenser plate; 34. Drain pipe; 35. Liquid check valve; 36. Filter box; 37. Concave groove; 38. Filter plate; 39. Circulation pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4This utility model provides a nitrogen protection device for the discharge of aminopyrazole centrifuges, including an air inlet assembly 1, the exhaust end of which is connected to a centrifugal discharge machine 2, and a recycling circulation assembly 3 connected to the exhaust end of the centrifugal discharge machine 2; the air inlet assembly 1 includes an air compressor 11, the exhaust end of which is connected to a nitrogen generator 12, the exhaust end of which is connected to a gas storage tank 13, and the exhaust end of the gas storage tank 13 is connected to the centrifugal discharge machine 2 through an air inlet pipe 14; the circulation assembly 3 includes an exhaust pipe 31 connected to the exhaust end of the centrifugal discharge machine 2, the exhaust end of which is connected to a condenser box 32, the bottom of which is connected to a drain pipe 34, the drain end of which is connected to the return pipe of the centrifugal discharge machine 2, and a filter box 36 connected to one side of the condenser box 32 through a connecting pipe, the exhaust end of which is connected to the air inlet of the compressor 11 through a circulation pipe 39.

[0021] In use, the air compressor 11 provides the air source power for the nitrogen generation process through the air intake assembly 1. The screw-type air compressor 11 compresses atmospheric air to a stable pressure while removing some moisture and dust. The nitrogen generator 12 is connected to the exhaust end of the air compressor 11 via a high-pressure pipeline. Using PSA (Pressure Swing Adsorption) technology, nitrogen and oxygen in the air are separated through pressure adsorption, pressure desorption, and circulation to produce high-purity nitrogen that meets process requirements. The compressor 11 is started to pressurize and discharge a large amount of air into the nitrogen generator 12. The nitrogen generator 12 separates and filters out nitrogen and discharges it into the gas storage tank 13. During use, the valve of the gas storage tank 13 is opened to allow nitrogen to pass through the air intake assembly 1. Gas pipe 14 is discharged into the centrifugal discharge machine 2, thereby achieving the effect of feeding material into the centrifugal discharge machine 2. Through the setting of circulation component 3, the gas discharged from the centrifugal discharge machine 2 is discharged into the condenser 32 through exhaust pipe 31. Most of the aminopyrazole vapor is accumulated at the bottom of the condenser 32 after condensation. Finally, the aminopyrazole liquid flows into the return pipe for recycling through drain pipe 34. The gas treated by the condenser 32 is discharged into the filter box 36. After the filter box 36 filters out the remaining small amount of aminopyrazole vapor and moisture, it is discharged into the compressor 11 through circulation pipe 39. After being pressurized, it is discharged back into the nitrogen generator 12, reducing the working intensity of the nitrogen generator 12 in filtering and separation.

[0022] Several sets of condensing plates 33 are fixedly installed alternately at the top and bottom of the inner cavity of the condensing chamber 32. The sets of condensing plates 33 form a connecting air passage. The bottom of the sets of condensing plates 33 located at the bottom of the inner cavity of the condensing chamber 32 is provided with a connecting groove. The condensate flows into the interior of the drain pipe 34 through the connecting groove. The staggered distribution of condensing plates 33 forms an S-shaped airflow channel, which prolongs the residence time of nitrogen in the condensing chamber 32, so that the aminopyrazole vapor in the nitrogen and the solvent vapor condense into liquid upon contact with the condenser. The connecting groove is opened at the bottom of each set of condensing plates 33 at the bottom of the inner cavity of the condensing chamber 32. The liquid aminopyrazole and solvent can be collected at the bottom of the condensing chamber 32 through the connecting groove for easy collection.

[0023] The top of the filter box 36 has several sets of concave grooves 37 that run through it. Each set of concave grooves 37 contains a filter plate 38 that is movably inserted inside. The gas inside the condenser box 32 is finally discharged into the filter box 36. The filter plates 38 remove dust and residual organic matter from the nitrogen gas. The filter plates 38 are movably inserted into the filter box 36 through the concave grooves 37. Each set of filter plates 38 has a double-layer structure. The first layer is a 5μm precision metal mesh for filtering dust, and the lower layer is an activated carbon adsorption layer for adsorbing residual solvent vapor. The filter plates 38 can be quickly installed and removed, making it convenient to clean and replace them. The concave grooves 37 and the filter plates 38 are sealed with a sealing strip to prevent gas leakage and pollution.

[0024] A set of liquid check valves 35 is provided in the middle of the drain pipe 34. The liquid check valves 35 prevent the liquid inside the return pipe from entering the condenser 32 through the drain pipe 34 due to the negative pressure generated by the airflow. A gas check valve is provided in the middle of the circulation pipe 39. The gas check valve prevents the nitrogen protection layer from being damaged by outside air flowing back through the compressor 11 into the filter box 36, condenser 32 and centrifugal discharge machine 2.

[0025] One end of the air inlet pipe 14 is sealed and extends through the interior of the centrifugal discharge machine 2. One end of the air inlet pipe 14 is connected to an annular pipe 15. Several sets of air nozzles 16 are evenly connected and installed on one side of the annular pipe. The annular pipe 15 is fixedly installed inside the centrifugal discharge machine 2 (surrounding the outside of the drum). Several sets of air nozzles 16 are evenly opened on the side of the annular pipe 15 facing the drum and the discharge chute, which can evenly spray nitrogen into the core area of ​​the centrifugal discharge machine 2 (drum surface and discharge channel) to eliminate protection dead corners.

[0026] In practical use: Air compressor 11 compresses air and sends it to nitrogen generator 12. Nitrogen generator 12 separates high-purity nitrogen using PSA technology. After the nitrogen enters the storage tank 13 and is stabilized, it is transported to the annular pipe 15 through the inlet pipe 14, and then evenly sprayed into the centrifugal discharge machine 2 through the nozzle 16, creating an inert environment inside the equipment. At the same time, the nitrogen carries aminopyrazole vapor, trace amounts of dust and solvent vapor, and enters the circulation component 3 through the exhaust pipe 31. The nitrogen containing impurities enters the condenser 32, where, under the action of the staggered condenser plates 33, the aminopyrazole vapor... The vapor and solvent vapor condense into liquid, which is collected at the bottom of the condenser plate 33 through the connecting groove to the bottom of the condenser box 32, and then flows back to the return pipe of the centrifugal discharge machine 2 through the drain pipe 34 to realize material recovery. The condensed nitrogen (with most of the liquid impurities removed) enters the filter box 36 through the connecting pipe. After the metal mesh of the filter plate 38 filters out dust and the activated carbon adsorbs residual organic matter, it becomes clean nitrogen. The clean nitrogen flows back to the air inlet of the air compressor 11 through the circulation pipe 39, mixes with fresh air and re-enters the nitrogen generation process to form a closed loop.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitrogen protection device for the discharge of aminopyrazole centrifuge, characterized in that: It includes an air intake assembly (1), the exhaust end of the air intake assembly (1) is connected to the centrifugal discharge machine (2), and the exhaust end of the centrifugal discharge machine (2) is connected to a recycling assembly (3). The air intake assembly (1) includes an air compressor (11), the exhaust end of the compressor (11) is connected to a nitrogen generator (12), the exhaust end of the nitrogen generator (12) is connected to a gas storage tank (13), and the exhaust end of the gas storage tank (13) is connected to a centrifugal discharge machine (2) through an air intake pipe (14). The circulation component (3) includes an exhaust pipe (31) connected to the exhaust end of the centrifugal discharge machine (2), the exhaust end of the exhaust pipe (31) is connected to a condenser (32), the bottom of the condenser (32) is connected to a drain pipe (34), the drain end of the drain pipe (34) is connected to the return pipe of the centrifugal discharge machine (2), and a filter box (36) is connected to one side of the condenser (32) through a connecting pipe. The exhaust end of the filter box (36) is connected to the air inlet of the compressor (11) through a circulation pipe (39).

2. The nitrogen protection device for the discharge of aminopyrazole centrifuge according to claim 1, characterized in that: The condenser (32) has several sets of condensing plates (33) fixedly installed at the top and bottom of its inner cavity, and the sets of condensing plates (33) form a connecting air passage for airflow.

3. The nitrogen protection device for the discharge of aminopyrazole centrifuge according to claim 2, characterized in that: Several sets of condensing plates (33) located at the bottom of the inner cavity of the condensing box (32) are provided with connecting grooves at the bottom, and the condensate flows into the interior of the drain pipe (34) through the connecting grooves.

4. The nitrogen protection device for the discharge of aminopyrazole centrifuge according to claim 1, characterized in that: The top of the filter box (36) is provided with several sets of concave grooves (37), and a set of filter plates (38) are movably inserted inside each set of concave grooves (37).

5. The nitrogen protection device for the discharge of aminopyrazole centrifuge according to claim 1, characterized in that: A set of liquid check valves (35) is provided in the middle of the drain pipe (34), and a gas check valve is provided in the middle of the circulation pipe (39).

6. The nitrogen protection device for the discharge of aminopyrazole centrifuge according to claim 1, characterized in that: One end of the air inlet pipe (14) is sealed and penetrates into the interior of the centrifugal discharge machine (2), and one end of the air inlet pipe (14) is connected to an annular pipe (15), and several sets of air nozzles (16) are evenly connected to one side of the annular pipe (15).

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