Highly toxic medium safety treatment system

Abstract

The utility model relates to the technical field of safety treatment systems, in particular to a highly toxic medium safety treatment system. Comprising an absorption tower, the absorption tower is connected with a chlorine inlet pipe, an alkali liquor inlet pipe and a circulating pipe, the circulating pipe is connected with a circulating pump and a flow meter, and a liquid level meter is further arranged in the absorption tower; the circulating pipe is connected with a circulating tank, a heat exchanger and a discharge pipe, and the discharge pipe is connected with a discharge pump; through the arrangement of the liquid level meter, whether the circulating pipe is blocked or leaks or not can be judged together with the flow meter; by arranging the circulating tank, more alkali liquor can be stored, the use time of the alkali liquor is longer, and the alkali liquor does not need to be frequently replaced; by arranging the heat exchanger, the temperature of the medium in the circulating pipe can be adjusted through the heat exchanger, and the reaction is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of safety processing systems, in particular to a highly toxic medium safety processing system. Background Art

[0002] Liquid chlorine storage containers are prone to gasification and pressure increase when the external temperature rises. The liquid chlorine vaporizer needs to be replaced and depressurized before daily maintenance. During the liquid chlorine unloading process, the storage tank pressure will continue to rise and also needs to be depressurized. In the above situations, the chlorine needs to be discharged to the treatment system for absorption and treatment.

[0003] The patent with application number 201910586534.X discloses a chemical tail gas treatment equipment, including: a tail gas absorption tower, on the upper part of which a spray device is provided; a tail gas inlet pipe for conveying chemical tail gas to the absorption tower; an absorbent inlet pipe and for conveying liquid absorbent into the absorption tower; an absorption liquid circulation pipe, one end of which is connected to the bottom of the absorption tower and the other end is connected to the spray device; and an absorption liquid circulation pump, which is arranged in the circulation pipe and is used to pump the absorption liquid at the bottom of the absorption tower to the spray device via the circulation pipe; the equipment also includes a flow meter and a pH meter arranged in the circulation pipe and located downstream of the circulation pump; and a control device; when the liquid flow measured by the flow meter is lower than a predetermined flow threshold, the control device generates an alarm that the equipment is blocked, and when the pH value measured by the pH meter is lower than a predetermined pH value threshold, the control device generates an alarm that the absorbent needs to be replenished to the absorption tower.

[0004] The patent solution with application number 201910586534.X can absorb chlorine gas, but its disadvantages are: 1. When the flow in the absorption liquid circulation pipe is abnormal, it is impossible to determine whether the absorption liquid circulation pipe is blocked or leaking; 2. The capacity of the absorption liquid is small and it is replaced frequently. Utility Model Content

[0005] The main purpose of the utility model is to provide a highly toxic medium safety treatment system to solve the problems in the prior art that it is impossible to determine whether the absorption liquid circulation pipe is blocked or leaking and the absorption liquid capacity is small.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a highly toxic medium safety treatment system, including an absorption tower, the absorption tower is connected to a chlorine gas inlet pipe, an alkali solution inlet pipe and a circulation pipe, the circulation pipe is connected to a circulation pump and a flow meter, and a liquid level meter is also provided in the absorption tower.

[0007] Furthermore, the circulation pipe is connected to a circulation tank.

[0008] Furthermore, a heat exchanger is connected to the circulation pipe.

[0009] Furthermore, the circulation pipe is connected to a discharge pipe, and the discharge pipe is connected to a discharge pump.

[0010] Furthermore, the chlorine inlet pipe comprises a first chlorine inlet pipe and a second chlorine inlet pipe, and one end of the second chlorine inlet pipe away from the absorption tower is connected to a chlorine buffer tank.

[0011] Furthermore, the number of the circulation tanks is two, and the two circulation tanks are connected in parallel through a pipeline.

[0012] The utility model provides a liquid level meter, which can be used together with a flow meter to determine whether the circulation pipe is blocked or leaking; provides a circulation tank, which can store more alkali solution, and the alkali solution can be used for a longer time without frequent replacement; and provides a heat exchanger, which can adjust the temperature of the medium in the circulation pipe and promote the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0014] Figure 1 It is a structural schematic diagram of an embodiment;

[0015] In the figure: 1. absorption tower; 2. circulation pipe; 3. flow meter; 4. alkali solution inlet pipe; 5. liquid level meter; 6. circulation tank; 7. heat exchanger; 8. circulation pump; 9. discharge pipe; 10. discharge pump; 11. first chlorine gas inlet pipe; 12. second chlorine gas inlet pipe; 13. chlorine buffer tank. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] like Figure 1 As shown, according to an embodiment of the utility model, a highly toxic medium safety treatment system is provided, including an absorption tower 1, the absorption tower 1 is connected with a chlorine gas inlet pipe, an alkali solution inlet pipe 4 and a circulation pipe 2; the two ends of the circulation pipe 2 are respectively connected to the bottom and the top of the absorption tower 1, and the circulation pipe 2 is connected with a circulation pump 8 and a flow meter 3; the circulation pipe 2 is used to circulate the alkali solution and other media in the absorption tower 1 along the circulation pipe 2 to adjust the temperature of the medium or discharge the reactants; a liquid level meter 5 is also provided in the absorption tower 1.

[0018] The circulation pipe 2 is connected to a circulation tank 6 and a heat exchanger 7. The heat exchanger 7 can adjust the temperature of the medium in the circulation pipe 2 to promote the reaction.

[0019] The circulation pipe 2 is connected to a discharge pipe 9, and the discharge pipe 9 is connected to a discharge pump 10; the discharge pipe 9 is used to discharge reactants formed by the reaction of chlorine gas and alkali solution.

[0020] The chlorine inlet pipe includes a first chlorine inlet pipe 11 and a second chlorine inlet pipe 12, and the end of the second chlorine inlet pipe 12 away from the absorption tower 1 is connected to a chlorine buffer tank 13. The chlorine from the claw pump outlet directly enters the absorption tower 1 through the first chlorine inlet pipe 11; the chlorine from the storage tank pressure discharge and other pressure discharge gases of the device (such as: sewage tank outlet pressure discharge, unloading pressure discharge, phosgene synthesis system buffer tank pressure discharge, etc.) first enters the chlorine buffer tank 13, and then enters the absorption tower 1.

[0021] There are two circulation tanks 6, and the two circulation tanks 6 are connected in parallel through pipelines; two circulation tanks 6 are provided, one of which is used and the other is used as a backup.

[0022] In this embodiment, by setting a liquid level meter 5, it is possible to determine whether the circulation pipe 2 is blocked or leaking together with the flow meter 3; when the value of the flow meter 3 is zero and the value of the liquid level meter 5 is basically unchanged, the circulation pipe 2 is in a completely blocked state; when the value of the flow meter 3 is low and the value of the liquid level meter 5 decreases, the circulation pipe 2 is in a leaking state; when the value of the flow meter 3 is low and the value of the liquid level meter 5 is basically unchanged, the circulation pipe 2 is in a partially blocked state.

[0023] By providing a circulation tank 6, this embodiment can store more alkali solution, and the alkali solution can be used for a longer time without frequent replacement; by providing a heat exchanger 7, the temperature of the medium in the circulation pipe 2 can be adjusted by the heat exchanger 7 to promote the reaction.

[0024] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A highly toxic medium safety treatment system, comprising an absorption tower (1), wherein the absorption tower (1) is connected to a chlorine gas inlet pipe, an alkali solution inlet pipe (4) and a circulation pipe (2), wherein the circulation pipe (2) is connected to a circulation pump (8) and a flow meter (3), characterized in that: A liquid level meter (5) is also provided in the absorption tower (1).

2. The highly toxic medium safe processing system according to claim 1, characterized in that: The circulation pipe (2) is connected to a circulation tank (6).

3. The highly toxic medium safe processing system according to claim 1, characterized in that: The circulation pipe (2) is connected to a heat exchanger (7).

4. The highly toxic medium safe processing system according to claim 1, characterized in that: The circulation pipe (2) is connected to a discharge pipe (9), and the discharge pipe (9) is connected to a discharge pump (10).

5. The highly toxic medium safe processing system according to claim 1, characterized in that: The chlorine gas inlet pipe comprises a first chlorine gas inlet pipe (11) and a second chlorine gas inlet pipe (12); an end of the second chlorine gas inlet pipe (12) away from the absorption tower (1) is connected to a chlorine gas buffer tank (13).

6. The highly toxic medium safe processing system according to claim 2, characterized in that: The number of the circulation tanks (6) is two, and the two circulation tanks (6) are connected in parallel via a pipeline.

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