A self-suction type waste gas absorption device for reaction kettle in a dye production process

Abstract

The utility model relates to waste gas absorption equipment technical field, especially in dye production process reaction kettle butt joint self -priming type waste gas absorption device, including reaction kettle body, suction pipe, tee bend, acid gas purification bucket and nitrogen oxygen gas purification bucket, the gas outlet end of reaction kettle body is connected with the suction pipe who sets up, and the suction pipe is connected with the fixed detection cylinder pipe and suction pump on the suction pipe, the bottom surface of detection cylinder pipe is fixed with hydrogen chloride gas sensor and nitrogen oxide sensor, and the probe of hydrogen chloride gas sensor and nitrogen oxide sensor is inserted into the inside of detection cylinder pipe, the bottom surface of detection cylinder pipe is fixed with control module, the gas outlet end of suction pipe is connected with the fixed tee bend on the suction pipe, and the tee bend is connected with the fixed first solenoid valve on the tee bend. The utility model discloses the directional purification design of acid gas purification bucket and nitrogen oxygen gas purification bucket, realizes the efficient removal of harmful gas, fundamentally alleviates the physiological damage to the worker.

Description

Technical Field

[0001] This utility model relates to the technical field of waste gas absorption equipment, and in particular to a self-priming waste gas absorption device for docking with a reaction vessel in the dye production process. Background Technology

[0002] In the textile industry chain, reactive dyes are widely used in the dyeing and processing of natural fibers such as cotton, linen, and silk due to their advantages such as bright colors, high color fastness, and wide applicability. During the production of reactive dyes, the waste gas generated is characterized by dispersed sources, complex composition, and strong acidity: in the cyanuric chloride feeding and pulping process, cyanuric chloride decomposes when it comes into contact with water or air humidity to produce acidic gases, mostly hydrogen chloride gas; in the diazotization reaction of aromatic amines, excess sodium nitrite decomposes under acidic conditions to generate nitrogen oxides.

[0003] If the waste gas generated by existing reactive dyes is not properly treated, it will not only cause serious environmental and health problems, but also directly affect the quality of dye products, becoming a key bottleneck restricting the high-quality development of the reactive dye industry. At present, the production of reactive dyes generally adopts the waste gas treatment mode of intermittent reaction kettle and workshop exhaust. That is, the waste gas generated during the reaction process is first diffused to the production workshop, and then collected by the exhaust system at the top of the workshop and introduced into the end treatment device.

[0004] However, after the exhaust gas diffuses in the workshop, it will increase the acidity of the workshop air. Acidic gases are highly irritating and will irritate the respiratory mucosa of workers; nitrogen oxides will damage lung function, and long-term exposure can lead to pulmonary fibrosis, which will affect the health of workers for a long time. Utility Model Content

[0005] This invention solves the problems in related technologies and proposes a self-priming waste gas absorption device for docking with the reaction vessel in the dye production process.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a self-priming waste gas absorption device for docking with a reaction vessel in dye production process, comprising a reaction vessel body, a suction pipe, a three-way pipe, an acid gas purification tank, and a nitrogen-oxygen gas purification tank. The suction pipe is connected to the outlet end of the reaction vessel body, and a detection tube and a suction pump are connected and fixed to the suction pipe. A hydrogen chloride gas sensor and a nitrogen oxide sensor are fixed to the bottom surface of the detection tube, and the probes of the hydrogen chloride gas sensor and the nitrogen oxide sensor are inserted through the interior of the detection tube. A control module is fixed to the bottom surface of the detection tube. A three-way pipe is connected and fixed to the outlet end of the suction pipe, and a first solenoid valve is connected and fixed to the three-way pipe. A second solenoid valve and a third solenoid valve are respectively connected and fixed to the two branch pipes of the three-way pipe. The acid gas purification tank and the nitrogen-oxygen gas purification tank are respectively connected and fixed to the ends of the two branch pipes of the three-way pipe.

[0007] As a preferred embodiment, a gas guide tube is vertically connected and fixed in the middle of the top surface of the acid gas purification tank, and the top of the gas guide tube is connected and fixed to the end of one of the branch pipes of the three-way pipe.

[0008] As a preferred embodiment, a liquid filling pipe is vertically connected and fixed on the top surface of the acid gas purification tank, and the liquid filling pipe is connected and fixed to the alkali solution pipeline. A drain pipe is vertically connected and fixed on the bottom surface of the acid gas purification tank, and valves are connected and fixed on both the drain pipe and the liquid filling pipe.

[0009] As a preferred embodiment, an exhaust pipe is horizontally connected and fixed on the upper side of the outer wall of the acid gas purification tank, and the other end of the exhaust pipe is connected and fixed to the gas outlet pipe.

[0010] As a preferred embodiment, an injection cylinder is vertically connected and fixed in the middle of the top surface of the nitrogen-oxygen gas purification tank, and the top of the injection cylinder is connected and fixed to the end of another branch pipe of the three-way pipe.

[0011] As a preferred option, a spray ring is fixed inside the nitrogen-oxygen gas purification tank, and the spray ring is connected and fixed to the ammonia water pipeline.

[0012] As a preferred embodiment, a drain pipe is vertically connected and fixed on the bottom surface of the nitrogen-oxygen gas purification tank, and a valve is connected and fixed on each drain pipe. A gas supply pipe is horizontally connected and fixed on the upper side of the outer wall of the nitrogen-oxygen gas purification tank, and the other end of the gas supply pipe is connected and fixed to the gas outlet pipe.

[0013] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention uses a suction pipe for real-time extraction and a detection tube for precise classification, blocking the diffusion path of waste gas in the workshop at the source, significantly reducing worker health risks. The suction pipe is directly connected to the outlet of the reactor body via a suction pump, allowing it to extract waste gas from the reactor the moment it is generated, preventing leakage from gaps such as the feed inlet and the seal of the stirring shaft into the workshop. Compared with traditional intermittent reactors and workshop exhaust modes, this technology reduces the amount of waste gas diffusion in the workshop, improving worker safety. The hydrogen chloride gas sensor and nitrogen oxide sensor at the bottom of the detection tube can identify the waste gas composition in real time and transmit the data to the control module. The control module precisely controls the flow direction of waste gas through the first, second, and third solenoid valves, directing the waste gas into the acidic gas purification tank when it contains only HCl, and directing it into the NO gas purification tank when it contains only NO. x The timely introduction of nitrogen and oxygen gas purification tanks avoids the residual harmful gases caused by incomplete purification in traditional mixing processes, significantly reducing occupational health risks. Through the directional purification design of the acid gas purification tank and the nitrogen and oxygen gas purification tank, highly efficient removal of harmful gases is achieved, fundamentally alleviating physiological damage to workers. Attached Figure Description

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

[0015] Figure 2 This is an exploded structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the three-way pipe in the disassembled state in an embodiment of this utility model;

[0017] Figure 4 This is a schematic diagram of the acid gas purification tank in the decomposition state in an embodiment of this utility model;

[0018] Figure 5 This is a schematic diagram of the nitrogen-oxygen gas purification tank in the decomposition state in an embodiment of this utility model.

[0019] In the diagram: 1. Reactor body; 2. Suction pipe; 21. Detection tube; 22. Control module; 23. Hydrogen chloride gas sensor; 24. Nitrogen oxide sensor; 25. Suction pump; 3. Three-way pipe; 31. First solenoid valve; 32. Second solenoid valve; 33. Third solenoid valve; 4. Acid gas purification tank; 41. Gas guide tube; 42. Liquid filling pipe; 43. Sewage discharge pipe; 44. Exhaust pipe; 5. Nitrogen-oxygen gas purification tank; 51. Gas injection tube; 52. Spray ring; 53. Sewage discharge pipe; 54. Gas transmission pipe. Detailed Implementation

[0020] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figures 1 to 5As shown, a self-priming waste gas absorption device for a reaction vessel in dye production includes a reaction vessel body 1, a suction pipe 2, a three-way pipe 3, an acid gas purification tank 4, and a nitrogen-oxygen gas purification tank 5. The suction pipe 2 is connected to the outlet end of the reaction vessel body 1, and a detection tube 21 and a suction pump 25 are connected and fixed to the suction pipe 2. A MICS-4514 hydrogen chloride gas sensor 23 and an Alphasense sensor are fixed on the bottom surface of the detection tube 21. The probes of the NOA-B1 nitrogen oxide sensor 24, the hydrogen chloride gas sensor 23, and the nitrogen oxide sensor 24 are inserted through the detection tube 21. The bottom surface of the detection tube 21 is fixed with a control module 22 of model nRF52840. The outlet end of the suction pipe 2 is connected to a three-way pipe 3, and a first solenoid valve 31 is connected to the three-way pipe 3. The two branch pipes of the three-way pipe 3 are respectively connected to a second solenoid valve 32 and a third solenoid valve 33. The ends of the two branch pipes of the three-way pipe 3 are respectively connected to an acid gas purification tank 4 and a nitrogen-oxygen gas purification tank 5. The reaction vessel used in the dye production process is connected to a self-priming waste gas absorption device, including the reaction vessel body 1 for dye reaction. The generated waste gas is discharged through the suction pipe 2 at the outlet end. The hydrogen chloride gas sensor 23 and the nitrogen oxide sensor 24 in the detection tube 21 set on the suction pipe 2 can detect the hydrogen chloride and nitrogen oxide content in the waste gas in real time and transmit the data to the control module 22 for data analysis and processing. The suction pump 25 is used to extract waste gas from the reactor, allowing it to pass through a detector before entering the three-way pipe 3. The first solenoid valve 31 controls whether the waste gas is directly discharged or purified. Simultaneously, the second solenoid valve 32 and the third solenoid valve 33 control the waste gas to enter the acid gas purification tank 4 and the nitrogen-oxygen gas purification tank 5, respectively, for purification treatment. The purified gas is then discharged into the atmosphere. This device, through real-time monitoring and automatic control, can effectively remove harmful gaseous components from the waste gas, reduce environmental pollution, and improve the safety and environmental friendliness of the production process.

[0022] In one embodiment, such as Figure 2 and 4As shown, a gas guide cylinder 41 is vertically connected and fixed in the middle of the top surface of the acid gas purification tank 4, and the top end of the gas guide cylinder 41 is connected and fixed to the end of one of the branch pipes of the three-way pipe 3. A liquid addition pipe 42 is vertically connected and fixed in the top surface of the acid gas purification tank 4, and the liquid addition pipe 42 is connected and fixed to the alkaline solution pipe. A drain pipe 43 is vertically connected and fixed in the bottom surface of the acid gas purification tank 4, and valves are connected and fixed to both the drain pipe 43 and the liquid addition pipe 42. An exhaust pipe 44 is horizontally connected and fixed in the upper side of the outer wall of the acid gas purification tank 4, and the other end of the exhaust pipe 44 is connected and fixed to the gas outlet pipe. The acid gas purification device introduces acid gas into the acid gas purification tank 4 through the gas guide cylinder 41 for purification treatment, and at the same time adds alkaline solution into the tank through the liquid addition pipe 42. The alkaline solution reacts with the acid gas to achieve the purification effect. The purified gas is discharged from the tank through the drain pipe 43 and further discharged to the outside through the exhaust pipe 44. Valves are installed on both the drain pipe 43 and the liquid addition pipe 42 to control the flow rate of gas discharge and liquid addition. The alkali solution pipeline is connected to the liquid addition pipe 42 to provide sufficient alkali solution resources to maintain the purification process. Overall, this device effectively purifies acidic gases by introducing acidic gas, adding alkali solution for reaction purification, and discharging excess liquid and gas, ensuring the cleanliness of the discharged gas.

[0023] In one embodiment, such as Figure 2 and 5 As shown, an injection cylinder 51 is vertically connected and fixed to the center of the top surface of the nitrogen-oxygen gas purification tank 5, and the top of the injection cylinder 51 is connected and fixed to the end of another branch pipe of the three-way pipe 3. A spray ring 52 is fixed inside the nitrogen-oxygen gas purification tank 5, and the spray ring 52 is connected and fixed to the ammonia water pipe. A drain pipe 53 is vertically connected and fixed to the bottom surface of the nitrogen-oxygen gas purification tank 5, and valves are connected and fixed to each drain pipe 53. A gas supply pipe 54 is horizontally connected and fixed to the upper side of the outer wall of the nitrogen-oxygen gas purification tank 5, and the other end of the gas supply pipe 54 is connected and fixed to the gas outlet pipe. The nitrogen-oxygen gas purification tank 5 plays a core purification role, used to absorb and neutralize harmful components in the gas. The injection cylinder 51 is used to introduce the treated gas into the purification tank, while the spray ring 52 is equipped with an ammonia water pipe, which sprays ammonia water evenly to effectively remove harmful gas components such as nitrogen oxides. The drain pipe 53 is used to discharge wastewater generated during the purification process, and the draining process is controlled by valves to ensure internal pressure balance. The gas supply pipe 54 connects to the gas outlet pipe to ensure that the purified gas can be smoothly discharged, ultimately achieving the purpose of purifying the emitted gas. First, the nitrogen-oxygen mixture, after a chemical reaction, enters the gas injection cylinder 51 through the three-way pipe 3. Subsequently, the gas enters the nitrogen-oxygen gas purification tank 5. Ammonia water on the spray ring 52 penetrates the spray ring 52 and comes into full contact with the gas flow, further removing harmful substances. The purified gas rises, passes through the purification tank, reaches the gas supply pipe 54, and is finally discharged through the gas outlet pipe. The wastewater generated during the purification process is discharged through the drain pipe 53.

[0024] The working principle of this utility model:

[0025] First, connect and fix the gas guide tube 41 in the acid gas purification tank 4 to the end of a branch pipe of the three-way pipe 3, and connect and fix the liquid addition pipe 42 to the alkaline solution pipeline. At the same time, connect and fix the other end of the exhaust pipe 44 to the outlet pipe for discharging dye tail gas. Similarly, connect and fix the gas injection tube 51 in the nitrogen-oxygen gas purification tank 5 to the end of a branch pipe of the three-way pipe 3, and connect and fix the spray ring 52 to the ammonia water pipeline. At the same time, connect and fix the other end of the gas delivery pipe 54 to the outlet pipe for discharging dye tail gas.

[0026] Then, when treating the waste gas generated by the reactive dye in the reactor body 1, the suction pump 25 on the suction pipe 2 is started to drive the waste gas out from the outlet end. The waste gas enters the detection tube 21, and then the components in the waste gas are detected by the hydrogen chloride gas sensor 23 and the nitrogen oxide sensor 24 on the bottom surface of the detection tube 21. The detection information is transmitted to the control module 22. If the waste gas contains hydrogen chloride gas but not nitrogen oxides, the control module 22 controls the first solenoid valve 31 to close and the second solenoid valve 32 to open, and guides the waste gas into the acid gas purification tank 4. The hydrogen chloride gas in the waste gas comes into contact with the sodium hydroxide solution in it to neutralize and remove the hydrogen chloride gas. Then the waste gas is discharged from the exhaust pipe 44 into the outlet pipe.

[0027] Finally, the detection information is transmitted to the control module 22. If the waste gas does not contain hydrogen chloride gas but contains nitrogen oxides, the control module 22 controls the first solenoid valve 31 to open, the second solenoid valve 32 to close, and the third solenoid valve 33 to open, so that the waste gas is guided into the nitrogen-oxygen gas purification tank 5. The nitrogen-oxygen gas in the waste gas comes into contact with the ammonia water sprayed into the nitrogen-oxygen gas purification tank 5 through the spray ring 52 to remove the nitrogen-oxygen gas. Then the waste gas is discharged from the gas delivery pipe 54 into the gas outlet pipe.

[0028] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A self-priming waste gas absorption device for docking with a reaction vessel in a dye production process, characterized in that, The reactor includes a reactor body (1), a suction pipe (2), a three-way pipe (3), an acid gas purification tank (4), and a nitrogen and oxygen gas purification tank (5). The suction pipe (2) is connected to the outlet end of the reactor body (1), and a detection tube (21) and a suction pump (25) are connected and fixed to the suction pipe (2). A hydrogen chloride gas sensor (23) and a nitrogen oxide sensor (24) are fixed on the bottom surface of the detection tube (21), and the probes of the hydrogen chloride gas sensor (23) and the nitrogen oxide sensor (24) are inserted through the tube. Inside the detection tube (21), a control module (22) is fixed on the bottom surface of the detection tube (21). The outlet end of the suction tube (2) is connected to the three-way pipe (3), and a first solenoid valve (31) is connected to the three-way pipe (3). A second solenoid valve (32) and a third solenoid valve (33) are respectively connected to the two branch pipes of the three-way pipe (3). An acid gas purification tank (4) and a nitrogen-oxygen gas purification tank (5) are respectively connected to the ends of the two branch pipes of the three-way pipe (3).

2. The self-priming waste gas absorption device for the reaction vessel in the dye production process according to claim 1, characterized in that: The top surface of the acid gas purification tank (4) is vertically connected to and fixed with a gas guide tube (41), and the top end of the gas guide tube (41) is connected to and fixed with the end of one of the branch pipes of the three-way pipe (3).

3. The self-priming waste gas absorption device for the reaction vessel in the dye production process according to claim 2, characterized in that: A liquid filling pipe (42) is vertically connected and fixed on the top surface of the acid gas purification tank (4), and the liquid filling pipe (42) is connected and fixed to the alkaline solution pipeline. A drain pipe (43) is vertically connected and fixed on the bottom surface of the acid gas purification tank (4), and valves are connected and fixed on both the drain pipe (43) and the liquid filling pipe (42).

4. The self-priming waste gas absorption device for the reaction vessel in the dye production process according to claim 3, characterized in that: An exhaust pipe (44) is horizontally connected and fixed on the upper side of the outer wall of the acid gas purification barrel (4), and the other end of the exhaust pipe (44) is connected and fixed to the gas outlet pipe.

5. The self-priming waste gas absorption device for the reaction vessel in the dye production process according to claim 1, characterized in that: The top surface of the nitrogen-oxygen gas purification tank (5) is vertically connected to and fixed with an injection cylinder (51), and the top end of the injection cylinder (51) is connected to and fixed with the end of another branch pipe of the three-way pipe (3).

6. The self-priming waste gas absorption device for the reaction vessel in the dye production process according to claim 5, characterized in that: The nitrogen and oxygen gas purification tank (5) has a spray ring (52) fixed inside, and the spray ring (52) is connected and fixed to the ammonia water pipeline.

7. A self-priming waste gas absorption device for docking with a reaction vessel in dye production process according to claim 6, characterized in that: The bottom surface of the nitrogen-oxygen gas purification tank (5) is vertically connected and fixed with a drain pipe (53), and valves are connected and fixed on the drain pipe (53). The upper side of the outer wall of the nitrogen-oxygen gas purification tank (5) is horizontally connected and fixed with a gas supply pipe (54), and the other end of the gas supply pipe (54) is connected and fixed with the gas outlet pipe.

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