Gas production reaction endpoint judgment device

Abstract

The utility model discloses a gas production reaction endpoint judgment device which comprises an observation bottle and is characterized in that a gas inlet pipe is inserted into the top of the observation bottle to the bottom of the observation bottle, and a gas outlet pipe is led out from the top of the observation bottle to a tail gas system; a liquid filling pipe is arranged on the side face of the upper portion of the observation bottle, a floating ball valve matched with a pipe opening of the liquid filling pipe is arranged in the observation bottle, and an overflow pipe is led out of one side of the bottom of the observation bottle. The reaction speed can be judged by observing the generation speed of the bubbles, and the instantaneous feeding amount of reactants added into the gas production equipment can be corrected according to the sizes of the bubbles, so that the accuracy and the safety of reaction control are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas production reaction end point judging device, especially a device for judging the gas generation end point in chemical reaction process, which is suitable for chemical industry, pharmacy, environmental protection and other fields. BACKGROUND

[0002] The gas production reaction equipment in industry is all closed equipment, and the generated gas is directly connected to the tail gas system or discharged through the venting pipeline, so it is difficult to directly observe the reaction condition in the reaction equipment and determine the reaction end point.

[0003] In the chemical reaction process, especially the chemical reaction involving gas generation, accurately determining the reaction end point is crucial for controlling the reaction process, improving product quality and safety. The traditional end point determination method mainly depends on experience or timed sampling analysis, which has the problems of low efficiency, large error and poor safety. Therefore, it is of great practical significance to develop a device that can simply, directly and accurately determine the gas production reaction end point. SUMMARY

[0004] The utility model discloses a gas production reaction end point judging device, which has the characteristics of simple device, easy installation, easy observation of reaction progress and determination of reaction end point, etc.

[0005] The above technical problems of the utility model are mainly solved by the following technical scheme: a gas production reaction end point judging device, comprising an observation bottle, characterized by inserting a gas inlet pipe into the top of the observation bottle to the bottom of the bottle, and leading a gas outlet pipe to the tail gas system at the top; a liquid filling pipe is arranged on the upper side of the observation bottle, a floating ball valve is arranged in the observation bottle and matched with the pipe opening of the liquid filling pipe, and an overflow pipe is led out from one side of the bottom of the observation bottle.

[0006] As preferred, the gas inlet pipe is connected to the bottom of the observation bottle through a gas inlet valve and a check valve, and connected to the gas outlet pipe through an emergency valve.

[0007] As preferred, the gas outlet pipe is provided with an exhaust valve and a flame arrester, and the flame arrester is located after the emergency valve.

[0008] As preferred, the observation bottle is a transparent cylindrical structure.

[0009] As preferred, the observation bottle is partially provided with a protective sleeve.

[0010] As a preferred embodiment of the aforementioned gas production reaction end point determination device, the height of the overflow pipe is adapted to the highest working position of the float valve, and the bottom of the overflow pipe is connected to a waste water treatment system through a drain valve.

[0011] As a preferred embodiment of the aforementioned gas production reaction end point determination device, the water outlet of the overflow pipe is connected to a waste water treatment system after being combined with the outlet of the drain valve.

[0012] As a preferred embodiment of the aforementioned gas production reaction end point determination device, a liquid inlet valve is arranged on the liquid filling pipe.

[0013] In the technical solution, the observation bottle is a visible cylindrical structure, a gas inlet pipe is inserted into the bottom of the bottle, and the gas discharged from the gas production equipment is introduced into the bottle, and after water or other liquid is introduced into the bottle, the gas will produce bubbles when meeting water, so that the bubble condition can be observed.

[0014] In the device, the float valve automatically controls the opening and closing of the liquid filling pipe according to the liquid level, so as to ensure the stability of the liquid level in the bottle. The overflow pipe arranged on one side of the bottom of the observation bottle has a height adapted to the highest working position of the float valve, and can meet the requirement of sufficient liquid in the observation bottle.

[0015] The control of the gas inlet pipe and the gas outlet pipe in the device is as follows: the gas inlet pipe is provided with a gas inlet valve and a check valve, so as to ensure the one-way flow of the gas.

[0016] In addition, the observation bottle is provided with a protective sleeve, which is not only beautiful, but also can protect the observation bottle from external impact and damage, and improve the service life.

[0017] Compared with the prior art, the beneficial effects of the device are as follows: the reaction speed can be determined by observing the speed of bubble generation, and the instantaneous feeding amount of the reactant added into the gas production equipment can be corrected according to the size of the bubbles, so as to improve the accuracy and safety of the reaction control. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of a component structure of the device.

[0019] Figure 2 It is a kind of observation bottle structure schematic diagram of the utility model.

[0020] In the figure: 1-observation bottle, 2-float ball valve, 3-liquid inlet valve, 4-liquid filling pipe, 5-fire arrestor, 6-gas outlet pipe, 7-emergency valve, 8-gas inlet pipe, 9-gas inlet valve, 10-check valve, 11-overflow pipe, 12-drain valve, 13-gas outlet valve. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model is further specifically explained below by examples and in conjunction with the drawings.

[0022] The embodiment is a kind of gas production reaction end point judging device, as shown in Figure 1 It is provided with a perspective cylindrical structure observation bottle 1 made of explosion-proof tempered glass or transparent four fluorine material, the observation bottle 1 is partially provided with protective sleeve outside, as shown in Figure 2 To improve the anti-collision explosion-proof ability of bottle body. A gas inlet pipe 8 is inserted into the bottle bottom from the top of the observation bottle 1, and a gas outlet pipe 6 is led out to the tail gas system. And the gas inlet pipe 8 is connected to the bottom of the observation bottle 1 through the gas inlet valve 9 and the check valve 10, and is connected with the gas outlet pipe 6 through the emergency valve 7. At the same time, the gas outlet pipe 6 is provided with a fire arrestor 5, and the fire arrestor 5 is located after the emergency valve 7.

[0023] A liquid filling pipe 4 is provided on one side of the upper part of the observation bottle 1, and a liquid inlet valve 3 is provided on the liquid filling pipe 4, and a float ball valve 2 is provided in the observation bottle 1 and matched with the position of the liquid filling pipe 4. A overflow pipe 11 is led out from the bottom of the observation bottle 1 on the other side, and the height of the overflow pipe 11 is matched with the highest working position of the float ball valve 2, and the bottom of the overflow pipe 11 is connected to the waste water treatment system through the drain valve 12. In actual connection, the water outlet of the overflow pipe 11 and the outlet of the drain valve 12 are combined and then connected to the waste water treatment system.

[0024] Working principle:

[0025] Open the liquid inlet valve 3 (usually open), so that the water or other liquid in the observation bottle 1 is automatically added to the set liquid level through the float ball valve 2, and when the liquid level in the observation bottle 1 is lowered, the liquid can be automatically replenished to maintain the balance of the liquid level in the observation bottle 1. The overflow pipe 11 (always open) and the drain valve 12 (usually closed) are matched with the float ball valve 2.

[0026] Open the gas inlet valve 9, input the gas generated in the reaction process into the observation bottle 1, and bubbles will be generated in the observation bottle 1. The check valve 10 can prevent the water or other liquid in the observation bottle 1 from being sucked into the gas production equipment under other possible negative pressure conditions (such as vacuum). The gas rising to the upper part of the observation bottle 1 is transported to the tail gas system or discharged through the fire arrestor 5 and the gas outlet pipe 6.

[0027] The bubble activity can be observed through the observation bottle 1: the bubble generation speed can determine the reaction speed, and the bubble size can correct the instantaneous feeding amount of the gas generating device. When there is no bubble in the observation bottle 1, it indicates that the reaction endpoint is reached and the reaction is stopped.

[0028] When the device is cleaned or overhauled, the exhaust valve 12 is opened to exhaust the liquid in the observation bottle 1 to the waste water treatment system.

[0029] When the observation bottle 1 is damaged and leaks or in other emergency situations, the gas inlet valve 9 and the gas outlet valve 13 are closed, and the emergency valve 7 is opened to directly deliver the gas to the tail gas system or discharge through the gas outlet pipe 6, so as to avoid the gas from leaking into other environments.

[0030] The above embodiments are illustrative of the present application, but not limiting of the present application. Although the present application has been described in conjunction with preferred embodiments, it will be understood that the present application is not limited to the preferred embodiments. Those skilled in the art can make various equivalent modifications and substitutions to the technical solutions of the present application based on the teachings of the present application. Therefore, the scope of the present application should be defined by the claims, and all equivalent modifications and substitutions belong to the protection scope of the technical solutions of the present application.

Claims

1. A device for determining the endpoint of a gas-producing reaction, comprising an observation bottle (1), characterized in that: An air inlet pipe (8) is inserted from the top of the observation bottle to the bottom of the bottle, and an exhaust pipe (6) is led out from the top to the exhaust gas system; a filling pipe (4) is provided on the upper side of the observation bottle, and a float valve (2) that matches the opening of the filling pipe is provided inside the observation bottle; an overflow pipe (11) is led out from the bottom side of the observation bottle.

2. The device for determining the endpoint of a gas-producing reaction according to claim 1, characterized in that, The air inlet pipe (8) is connected to the bottom of the observation bottle (1) through the air inlet valve (9) and the check valve (10), and is also connected to the air outlet pipe (6) through the emergency valve (7).

3. The device for determining the endpoint of a gas-producing reaction according to claim 2, characterized in that, The exhaust pipe (6) is equipped with an exhaust valve (13) and a flame arrester (5), with the flame arrester located after the emergency valve (7).

4. The device for determining the endpoint of a gas-producing reaction according to claim 1, characterized in that, The observation bottle (1) is a transparent cylindrical structure.

5. A device for determining the endpoint of a gas-producing reaction according to claim 1 or 4, characterized in that, The observation bottle (1) is partially covered with a protective sleeve.

6. The device for determining the endpoint of a gas-producing reaction according to claim 1, characterized in that, The height of the overflow pipe (11) is adapted to the highest working position of the float valve (2), and the bottom of the overflow pipe is connected to the wastewater treatment system via the drain valve (12).

7. The device for determining the endpoint of a gas-producing reaction according to claim 6, characterized in that, The outlet of the overflow pipe (11) is combined with the outlet of the drain valve (12) and then connected to the wastewater treatment system.

8. The device for determining the endpoint of a gas-producing reaction according to claim 1, characterized in that, The filling tube (4) is equipped with an inlet valve (3).

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