Tail gas treatment device of standard gas storage tank

Abstract

The utility model provides a tail gas treatment device of a standard gas storage tank, which relates to the technical field of gas treatment devices, and comprises a confluence main pipe, a confluence branch pipe, a treatment tank, a vacuum pump and a nitrogen storage tank, an arch-shaped clamp matched with a standard gas storage tank nozzle is arranged at the gas inlet end of the confluence branch pipe, the treatment tank is connected with the end of the confluence main pipe through a tail gas pipe and a first stop valve, and the vacuum pump is connected with the end of the confluence main pipe through an exhaust pipe and a second stop valve. And the nitrogen storage tank is connected with the end part of the confluence main pipe through a gas conveying pipe and a stop valve III. The tail gas treatment device can solve the problems that the tail gas treatment of the existing standard gas storage tank is incomplete, the storage tank of a specific type also needs to be subjected to bottle baking treatment, and the operation is complicated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas treatment device technical field, concretely relates to a tail gas treatment device of standard gas storage tank. BACKGROUND

[0002] Standard gas is an important branch of industrial gas, belongs to a kind of special gas, refers to the gas with known chemical composition, physical property and concentration under specific conditions.Common standard gas by use includes: gas alarm standard gas, electric power energy standard gas, petroleum chemical standard gas, environmental protection monitoring standard gas, medical health standard gas, instrument and meter standard gas etc., standard gas can also be used for environmental monitoring, toxic organic matter measurement, automobile exhaust gas test, natural gas BTU measurement, liquefied petroleum gas calibration standard, supercritical fluid technology etc.

[0003] Standard gas is stored, transported and used by storage tank, and there is still tail gas remaining in the standard gas storage tank after use, which will cause air pollution if directly discharged into air without treatment, so the tail gas remaining in the storage tank needs to be treated.The existing treatment method is to pass the tail gas into neutralization treatment tank for acid-base neutralization treatment, and the existing treatment method has the following problems: the tail gas treatment in the storage tank is incomplete, and specific types of storage tanks also need to be baked, which is complicated to operate.Therefore, the present application provides a tail gas treatment device for standard gas storage tank. UTILITY MODEL CONTENTS

[0004] In order to overcome the problems in the background art, the utility model provides a tail gas treatment device for standard gas storage tank, which solves the problems of incomplete tail gas treatment, specific types of storage tanks also need to be baked and complicated operation of the existing tail gas treatment for standard gas storage tank.

[0005] A tail gas treatment device for standard gas storage tank, comprising a flow collection main pipe, a flow collection branch pipe, a treatment tank, a vacuum pump and a nitrogen storage tank, a plurality of regulating valves are installed on the flow collection main pipe, the exhaust end of the flow collection branch pipe is connected with the regulating valve, the gas inlet end of the flow collection branch pipe is provided with an arc clamp matched with the bottle mouth of the standard gas storage tank, the treatment tank is connected with the end of the flow collection main pipe through a tail gas pipe and a stop valve one, the vacuum pump is connected with the end of the flow collection main pipe through a suction pipe and a stop valve two, and the nitrogen storage tank is connected with the end of the flow collection main pipe through a gas conveying pipe and a stop valve three.

[0006] Further, the bottom of the treatment tank is provided with a bubbling pipe connected with the tail gas pipe, the top of the treatment tank is provided with an exhaust pipe and a dosing pipe, and the side wall outside the treatment tank is provided with a liquid discharge port and a liquid level meter.

[0007] Further, a gas sampling port is installed on the exhaust pipe through a valve.

[0008] Compared with the prior art, the utility model has the advantages of

[0009] The application is provided with a treatment tank, a vacuum pump and a nitrogen storage tank, residual tail gas is connected and collected through the main and branch current collectors, most of the tail gas enters the treatment tank for neutralization treatment, the vacuum pump and the nitrogen storage tank can perform vacuum extraction on the treatment tank, and then replace the gas in the bottle through nitrogen, so that the tail gas treatment of the storage tank is completely efficient, and the problems of incomplete tail gas treatment of the existing standard gas storage tank and complex operation of the baking bottle treatment of the specific type of storage tank are solved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to clearly illustrate the technical scheme in the embodiments of the present application, the drawings used in the embodiment description are described.

[0011] Fig. 1 It is a schematic diagram of the overall structure of the present application;

[0012] Fig. 2 It is a schematic diagram of the vacuum extraction structure of the present application;

[0013] Fig. 3 It is a schematic diagram of the treatment tank structure of the present application.

[0014] 1-main current collector, 11-regulating valve, 12-arc clamp, 2-branch current collector, 3-treatment tank, 31-tail gas pipe, 32-stop valve one, 33-exhaust pipe, 34-dosing pipe, 35-liquid discharge port, 36-liquid level meter, 4-vacuum pump, 41-exhaust pipe, 42-stop valve two, 5-nitrogen storage tank, 51-gas conveying pipe, 52-stop valve three, 6-gas sampling port, 7-standard gas storage tank. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and beneficial effects of the present application more clear, the preferred embodiments of the present application will be described in detail below with reference to the drawings, so as to facilitate the understanding of the technical personnel.

[0016] The utility model proposes a kind of tail gas treatment device of standard gas storage tank, refer to Figs. 1-3 A tail gas treatment device of standard gas storage tank, comprising main current collector 1, branch current collector 2, treatment tank 3, vacuum pump 4 and nitrogen storage tank 5, the main current collector 1 is equipped with several regulating valves 11, the exhaust end of branch current collector 2 is connected with regulating valve 11, the gas inlet end of branch current collector 2 is provided with arc clamp 12 matched with the bottle nozzle of standard gas storage tank 7, the treatment tank 3 is connected with the end of main current collector 1 by tail gas pipe 31 and stop valve one 32, the vacuum pump 4 is connected with the end of main current collector 1 by exhaust pipe 41 and stop valve two 42, the nitrogen storage tank 5 is connected with the end of main current collector 1 by gas conveying pipe 51 and stop valve three 52.

[0017] The converging branch pipe 2 can be connected with the bottle mouth of the standard gas storage tank 7 through the arc clamp 12, the exhaust gas can enter the converging main pipe 1 through the converging branch pipe 2, the converging main pipe 1 can discharge the exhaust gas into the treatment tank 3 for neutralization treatment under the control of the stop valve one 32, the vacuum pump 4 can control the vacuumization of the standard gas storage tank 7 through the converging main pipe 1 and the converging branch pipe 2 under the control of the stop valve two 42, the nitrogen storage tank 5 is controlled by the stop valve three 52, and the exhaust gas in the standard gas storage tank 7 can enter the nitrogen storage tank 5 for replacement under the vacuumization, and the exhaust gas in the storage tank is completely discharged.

[0018] Referring to Figs. 1-3 , the bottom of the treatment tank 3 is provided with a bubbling pipe connected with the exhaust pipe 31, the top of the treatment tank 3 is provided with an exhaust pipe 33 and a dosing pipe 34, the side wall outside the treatment tank 3 is provided with a liquid discharge port 35 and a liquid level meter 36, and the treatment tank 3 is added with an alkaline neutralizing liquid such as NaOH, the exhaust gas introduced through the exhaust pipe 31 is uniformly distributed in the neutralizing liquid through the bubbling pipe 32, and the gas after the neutralization reaction is discharged through the exhaust pipe 33, thereby avoiding the problem of pollution caused by directly discharging the exhaust gas into the air.

[0019] Referring to Figs. 1-3 , the gas sampling port 6 is installed on the exhaust pipe 33 through a valve, so that the treated gas can be conveniently sampled and detected.

[0020] Working process:

[0021] The stop valve two 42 and the stop valve three 52 are closed, the stop valve one 32 is opened, the arc clamp 12 is connected with the standard gas storage tank 7, the exhaust gas in the standard gas storage tank 7 is introduced into the treatment tank 3 through the exhaust pipe 31 in the converging main pipe 1 under the residual pressure in the tank, then the stop valve one 32 is closed, the stop valve two 42 is opened, and the vacuum pump 4 is started to vacuumize the standard gas storage tank 7 for multiple times, after completion, the stop valve two 42 is closed and the stop valve three 52 is opened, due to the vacuum negative pressure in the standard gas storage tank 7, the nitrogen in the nitrogen storage tank 5 enters the standard gas storage tank 7 for replacement, then the standard gas storage tank 7 is removed after the stop valve three 52 is closed; the exhaust gas entering the treatment tank 3 is uniformly distributed in the neutralizing liquid through the bubbling pipe 32, and the gas after the neutralization reaction is discharged through the exhaust pipe 33.

[0022] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An off-gas treatment device for a standard gas storage tank, characterized by: The application relates to a gas mixing device, which comprises a main flow pipe (1), branch flow pipes (2), a treatment tank (3), a vacuum pump (4) and a nitrogen storage tank (5), a plurality of adjusting valves (11) are installed on the main flow pipe (1), the exhaust end of the branch flow pipes (2) is connected with the adjusting valves (11), the gas inlet end of the branch flow pipes (2) is provided with an arc clamp (13) matched with a standard gas storage tank (7) nozzle, the treatment tank (3) is connected with the end of the main flow pipe (1) through a tail gas pipe (31) and a stop valve (32), the vacuum pump (4) is connected with the end of the main flow pipe (1) through a gas suction pipe (41) and a stop valve (42), and the nitrogen storage tank (5) is connected with the end of the main flow pipe (1) through a gas conveying pipe (51) and a stop valve (52).

2. The exhaust gas treatment device for a standard gas tank according to claim 1, characterized by: A bubbling pipe is arranged on the tank bottom in the treatment tank (3) and connected with the tail gas pipe (31), the top of the treatment tank (3) is provided with an exhaust pipe (33) and a dosing pipe (34), and the side wall outside the treatment tank (3) is provided with a liquid discharge port (35) and a liquid level meter (36).

3. The exhaust gas treatment device for a standard gas storage tank according to claim 2, characterized by: A gas sampling port (6) is arranged on the exhaust pipe (33) through a valve.

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