Dry tail gas treatment device for sub-packaging arsine

Abstract

The utility model relates to the technical field of sub-packaging of arsine, and discloses a dry tail gas treatment device for sub-packaging of arsine, which comprises a Venturi tube arranged above a sub-packaging panel, and the gas outlet end of the Venturi tube is communicated with at least two main adsorption barrels in series through pipelines. A pipeline between the Venturi tube and each main adsorption barrel is communicated with a standby adsorption barrel through an automatic valve, the standby adsorption barrels and the main adsorption barrels are arranged in parallel, the lower part of the emergency adsorption barrel is communicated with a fan, and the outlet end of the fan is matched with the pipeline through the automatic valve to be communicated with a discharge port. According to the utility model, by arranging the standby adsorption barrel and the emergency adsorption barrel, when the main adsorption barrel is blocked or has other faults, an adsorption effect can be realized, and by arranging the silane detector and the differential pressure gauge, the concentration or differential pressure of arsine at the outlet pipeline can be monitored in time, and the standby adsorption barrel can be switched in time; therefore, the adsorbent in the main adsorption barrel can be replaced in time.

Description

Technical Field

[0001] The utility model relates to the technical field of arsine packaging, in particular to a dry tail gas treatment device for arsine packaging. Background Art

[0002] When arsine is packaged into negative pressure gas cylinders, a small amount of arsine will remain in the pipeline used for packaging. Since hydrogen arsine is a strong hemolytic poison, the product after the red blood cell lysis can block the renal tubules and cause acute renal failure. Therefore, the arsine tail gas remaining in the arsine packaging pipeline needs to be adsorbed before it can be discharged. In the daily tail gas adsorption process, since the amount of arsine remaining in the pipeline when arsine is packaged is small, a venturi device is usually used to drive it, so that the residual arsine quickly enters the dry adsorption barrel for reaction. After dry adsorption, the arsine content at the discharge port is effectively reduced. The safety and reliability of the existing dry adsorption arsine device in the application process still need to be improved. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a dry tail gas treatment device for arsine packaging, which solves the problem that the safety and reliability of the dry arsine adsorption device in the application process still need to be improved.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a dry tail gas treatment device for arsine subpackaging, comprising a venturi tube arranged above a subpackaging panel, the outlet end of the venturi tube is connected in series with no less than two main adsorption barrels through a pipeline, the pipeline between the venturi tube and each of the main adsorption barrels is connected to a spare adsorption barrel through an automatic valve, the spare adsorption barrel is arranged in parallel with the main adsorption barrel, the last main adsorption barrel is connected to an emergency adsorption barrel through an automatic valve and a pipeline, the lower part of the emergency adsorption barrel is connected to a fan, and the outlet end of the fan is connected to the emergency adsorption barrel through an automatic valve. An automatic valve is connected to a pipeline with a discharge port. The main adsorption barrel, the spare adsorption barrel and the emergency adsorption barrel are all provided with indicator windows. The indicator windows are filled with an indicator that changes color when the dry adsorbent in the adsorption barrel is saturated with adsorption. Automatic valves are provided at the air inlet ends of the main adsorption barrel and the emergency adsorption barrel. A differential pressure gauge is arranged at the air inlet end and the air outlet end of the first main adsorption barrel to detect the difference in gas pressure entering the air inlet end and the air outlet end of the main adsorption barrel. An arsine detector is arranged on the pipeline between the discharge port and the fan through an automatic valve.

[0007] Preferably, the main adsorption barrel and the spare adsorption barrel are both fixedly arranged in the adsorption body installation cabinet, and a positive-pressure nitrogen delivery device is arranged on the pipeline between the venturi tube and the main adsorption barrel through an automatic valve. The positive-pressure nitrogen delivery device can deliver positive-pressure nitrogen to the adsorption body installation cabinet, and the inner cavities of the main adsorption barrel and the spare adsorption barrel are both provided with temperature sensors.

[0008] Preferably, an arsine detector is arranged at the gas outlet end of the main adsorption barrel located at the end, so as to monitor the arsine concentration at the gas outlet end of the main adsorption barrel.

[0009] Preferably, a pressure gauge is arranged on the pipeline connecting the fan and the emergency adsorption barrel, and the fan and the discharge port are connected through a one-way valve and the pipeline.

[0010] Preferably, the pipelines arranged between the emergency adsorption barrel and the discharge port are all made of FRP or PVC composite pipes.

[0011] Preferably, the air inlet ends of the main adsorption barrel and the emergency adsorption barrel are connected to the entire arsine tail gas adsorption treatment pipeline through a corrugated hose.

[0012] (III) Beneficial effects

[0013] The utility model has the following beneficial effects:

[0014] The dry tail gas treatment device for arsine dispensing continuously feeds nitrogen into the venturi tube, so that the residual arsine at the dispensing panel is quickly sucked in and enters the adsorption barrel with the nitrogen for reaction. No less than two main adsorption barrels are connected in series, and each group of main adsorption barrels also has a spare adsorption barrel, and an indicator window is set at the outlet of the adsorption barrel. Once the indicator on the main adsorption barrel changes color, the PLC system controls the corresponding automatic valve to open and close and switch to the spare adsorption barrel, and the adsorbent in the main adsorption barrel is replaced to increase the reliability of the equipment. At the same time, by adding a differential pressure gauge at the inlet and outlet ends of the main adsorption barrel, once the difference between the differential pressure gauges at the inlet and outlet ends is greater than 100pa, there may be a blockage in the main adsorption barrel, and the PLC control system immediately switches to the spare adsorption barrel and prompts to replace the adsorbent; by arsenic detectors arranged in front of the discharge port, the arsine content in the exhaust gas can be detected before discharge, effectively avoiding the arsine content discharged being greater than the preset dangerous value. At the same time, once the arsine concentration at the outlet is detected to increase, the spare barrel is immediately switched, and an alarm signal is issued to prompt the replacement of the adsorbent in the main adsorption barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the pipeline system of the utility model;

[0016] Figure 2This is a schematic diagram of the PLC system control of the utility model.

[0017] In the figure: 1. Venturi tube; 2. Positive pressure nitrogen delivery device; 3. Adsorption body installation cabinet; 4. Main adsorption barrel; 5. Spare adsorption barrel; 6. Differential pressure gauge; 7. Temperature sensor; 8. Indicator window; 9. Arsenic detector; 10. Emergency adsorption barrel; 11. Fan; 12. Discharge port; 13. Pressure gauge; 14. One-way valve; 15. Corrugated hose. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 The utility model provides a technical solution: a dry tail gas treatment device for arsine sub-packaging, comprising a venturi tube 1 arranged above a sub-packaging panel, the gas outlet end of the venturi tube 1 is connected in series with no less than two main adsorption barrels 4 through a pipeline, the pipeline between the venturi tube 1 and each main adsorption barrel 4 is connected with a spare adsorption barrel 5 through an automatic valve, the spare adsorption barrel 5 and the main adsorption barrel 4 are arranged in parallel, the last main adsorption barrel 4 is connected with an emergency adsorption barrel 10 through an automatic valve and a pipeline, the lower part of the emergency adsorption barrel 10 is connected with a fan 11, and the outlet end of the fan 11 is connected with a discharge port 12 through an automatic valve and a pipeline, The main adsorption barrel 4, the spare adsorption barrel 5 and the emergency adsorption barrel 10 are all provided with an indicator window 8, and the indicator window 8 is filled with an indicator that changes color when the dry adsorbent in the adsorption barrel is saturated with adsorption (usually a reagent that changes color after reacting with arsine is used as an indicator). The main adsorption barrel 4 and the emergency adsorption barrel 10 are both provided with automatic valves at the near-port ends. The air inlet end and the air outlet end of the first main adsorption barrel 4 are connected to each other and a differential pressure gauge 6 is arranged to detect the difference in gas pressure entering the air inlet end and the air outlet end of the main adsorption barrel 4. An arsine detector 9 is arranged on the pipeline between the discharge port 12 and the fan 11 through an automatic valve.

[0020] The utility model continuously feeds nitrogen into the venturi tube 1, so that the residual arsine at the dispensing panel is quickly sucked in and enters the adsorption barrel with the nitrogen to react. No less than two main adsorption barrels 4 are connected in series, and each group of main adsorption barrels 4 also has a spare adsorption barrel 5, and an indicator window 8 is set at the outlet of the adsorption barrel. Once the indicator on the main adsorption barrel 4 changes color, the PLC system controls the opening and closing of the corresponding automatic valve to switch to the spare adsorption barrel 5, and the adsorbent in the main adsorption barrel 4 is replaced, thereby increasing the reliability of the equipment. At the same time, by adding a differential pressure gauge 6 at the inlet and outlet ends of the main adsorption barrel 4, once the difference between the differential pressure gauges at the inlet and outlet ends is greater than 100pa, there may be a blockage in the main adsorption barrel 4, and the PLC control system immediately switches to the spare adsorption barrel 5 and prompts to replace the adsorbent; by arsenic detector 9 arranged in front of the discharge port 12, the arsine content in the exhaust gas can be detected before discharge, effectively avoiding the discharged arsine content greater than the preset dangerous value. At the same time, once the arsine concentration at the outlet is detected to be increased, the standby barrel is immediately switched to proceed, and an alarm signal is issued to prompt the adsorbent in the main adsorption barrel 4 to be replaced.

[0021] Reference Figure 1 As shown, in this embodiment, the main adsorption barrel 4 and the spare adsorption barrel 5 are fixedly arranged in the adsorption main body installation cabinet 3, and a positive pressure nitrogen delivery device 2 is arranged on the pipeline between the venturi tube 1 and the main adsorption barrel 4 through an automatic valve. The positive pressure nitrogen delivery device 2 can deliver positive pressure nitrogen to the adsorption main body installation cabinet 3, and the main adsorption barrel 4 and the spare adsorption barrel 5 are both provided with a temperature sensor 7. Since the temperature will rise during the dry adsorption process, once the temperature in the adsorption barrel is detected to be abnormally high, high pressure nitrogen (usually 4 bar nitrogen) is delivered to the adsorption barrel through the positive pressure nitrogen delivery device 2 to increase the nitrogen purge gas volume, and the inner cavity of the adsorption barrel is quickly cooled; when the temperature in the adsorption barrel is detected to be normally heated, low pressure nitrogen (usually 2 bar nitrogen) is delivered to the adsorption barrel through the positive pressure nitrogen delivery device 2, and the adsorption barrel is normally cooled, thereby effectively ensuring the normal adsorption reaction in the adsorption barrel and making the reaction more complete.

[0022] Reference Figure 2 As shown, in this embodiment, an arsine detector 9 is arranged at the outlet end of the main adsorption barrel 4 at the end, so as to monitor the arsine concentration at the outlet end of the main adsorption barrel 4. The arsine detector 9 arranged at the outlet end of the main adsorption barrel 4 is used to monitor the arsine concentration at the outlet end. Once the concentration at the outlet end is detected to be increased, it means that the adsorbent in the main adsorption barrel 4 is saturated with adsorption and cannot adsorb the arsine in the tail gas, so that the arsine is discharged from the outlet end. At this time, the PLC control system immediately switches the corresponding valve, so that the tail gas enters the spare adsorption barrel 5 for adsorption, and sends an alarm signal to prompt the adsorbent in the main adsorption barrel 4 to be replaced.

[0023] Reference Figure 1 and 2 As shown, in this embodiment, a pressure gauge 13 is arranged on the pipeline connecting the fan 11 and the emergency adsorption barrel 10, and the fan 11 and the discharge port 12 are connected through a one-way valve 14. The pressure gauge 13 can effectively monitor the pressure of the gas discharged from the emergency adsorption barrel 10 to protect the entire pipeline system; the one-way valve 14 can avoid, ensuring the stable operation of the entire exhaust system, and at the same time, prevent foreign debris from entering the entire arsine adsorption treatment system when it is shut down.

[0024] In this embodiment, the pipelines arranged between the emergency adsorption barrel 10 and the discharge port 12 are all made of FRP or PVC composite pipes, which effectively ensures the service life of the discharge pipeline and prevents high-temperature gas from affecting the stable operation of the pipeline.

[0025] In this embodiment, the air inlet ends of the main adsorption barrel 4 and the emergency adsorption barrel 10 are both connected to the entire arsine tail gas adsorption treatment pipeline through the corrugated hose 15 .

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

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

Claims

1. A dry tail gas treatment device for arsine packaging, characterized in that: It includes a venturi tube arranged above the sub-packaging panel, the outlet end of the venturi tube is connected in series with no less than two main adsorption barrels through a pipeline, the pipeline between the venturi tube and each of the main adsorption barrels is connected to a spare adsorption barrel through an automatic valve, the spare adsorption barrel and the main adsorption barrel are arranged in parallel, the last main adsorption barrel is connected to an emergency adsorption barrel through an automatic valve and a pipeline, the lower part of the emergency adsorption barrel is connected to a fan, the outlet end of the fan is connected to a discharge port through an automatic valve and a pipeline, and the main adsorption barrel , the spare adsorption barrel and the emergency adsorption barrel are all provided with indicator windows, and the indicator windows are filled with indicators that change color when the dry adsorbent in the adsorption barrel is saturated with adsorption. The air inlet ends of the main adsorption barrel and the emergency adsorption barrel are both provided with automatic valves, and the air inlet end and the air outlet end of the first main adsorption barrel are connected to each other and a differential pressure gauge is arranged to detect the difference in gas pressure entering the air inlet end and the air outlet end of the main adsorption barrel, and an arsine detector is arranged on the pipeline between the discharge port and the fan through an automatic valve.

2. The dry tail gas treatment device for arsine packaging according to claim 1, characterized in that: The main adsorption barrel and the spare adsorption barrel are both fixedly arranged in the adsorption body installation cabinet. A positive-pressure nitrogen delivery device is arranged on the pipeline between the venturi tube and the main adsorption barrel through an automatic valve. The positive-pressure nitrogen delivery device can deliver positive-pressure nitrogen to the adsorption body installation cabinet. The inner cavities of the main adsorption barrel and the spare adsorption barrel are both provided with temperature sensors.

3. The dry tail gas treatment device for arsine packaging according to claim 1, characterized in that: An arsine detector is arranged at the gas outlet end of the main adsorption barrel at the end to monitor the arsine concentration at the gas outlet end of the main adsorption barrel.

4. A dry tail gas treatment device for arsine packaging according to claim 2 or 3, characterized in that: A pressure gauge is arranged on the pipeline connecting the blower and the emergency adsorption barrel, and the blower and the discharge port are connected through a one-way valve and a pipeline.

5. The dry tail gas treatment device for arsine packaging according to claim 4, characterized in that: The pipelines arranged between the emergency absorption barrel and the discharge port are all made of FRP or PVC composite pipes.

6. The dry tail gas treatment device for arsine packaging according to claim 4, characterized in that: The air inlet ends of the main adsorption barrel and the emergency adsorption barrel are both connected to the entire arsine tail gas adsorption treatment pipeline through a corrugated hose.

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