Energy-saving and emission-reducing system for overflow water of acetylene gas holder

Abstract

The utility model discloses an acetylene gas holder overflow water energy conservation and emission reduction system which comprises an acetylene gas inlet pipeline, an acetylene gas holder, a collecting tank, a wet acetylene generator and a production water replenishing tank, an overflow port of a gas holder water tank of the acetylene gas holder is communicated with an inlet of the collecting tank through a pipeline, a water outlet of the collecting tank is communicated with a water inlet end of the circulating pump through a pipeline, a water outlet end of the circulating pump is divided into two paths, one path is communicated with a water replenishing port of the reclaimed water tank, and the other path is communicated with a water inlet of the wet acetylene generator. The device has the advantages that by additionally arranging the collecting tank, condensate collected in the gas-liquid separator and overflow water of the gas holder water tank can be collected, the collected water and mechanical seal cooling return water of the circulating pump can be continuously supplemented into the reclaimed water tank, and the consumption and the discharge capacity of production water can be greatly reduced. By continuously supplementing water to the middle water-saving tank and monitoring the liquid level, acetylene gas leakage caused by low liquid level can be avoided, and safe and stable operation of the acetylene gas holder is ensured.

Description

Technical field:

[0001] The utility model relates to an overflow water energy-saving and emission-reduction system, in particular to an acetylene gas cabinet overflow water energy-saving and emission-reduction system. Background technology:

[0002] The wet acetylene process refers to the process in which calcium carbide reacts with water in an acetylene generator to generate acetylene gas. The generated acetylene gas then enters a wet low-pressure gas holder for storage, providing stable gas supply and gas volume regulation for subsequent acetylene applications.

[0003] In order to prevent acetylene gas from escaping from inside and outside the gas tank and forming an explosive mixture with air, which would bring great safety hazards, the gas tank needs to be kept at a high liquid level during use to seal the acetylene gas. In order to monitor the liquid level in the gas tank, a radar level gauge is usually set. Once the radar level gauge detects that the liquid level in the gas tank is lower than the preset low level value, the interlock opens the production water replenishment valve to automatically replenish water to the gas tank; when the preset high level value is reached, the replenishment stops.

[0004] However, in the production process, the radar level gauge often fails to detect accurately, resulting in water being added after the gas tank is full and the overflow water being discharged, causing a waste of production water. At the same time, the liquid level in the gas tank is too low and fails to play the proper sealing role, resulting in a huge safety hazard for the gas tank and an inability to operate stably. Utility model content:

[0005] In order to solve the above problems, the purpose of the utility model is to provide a safe, reliable and stable acetylene gas tank overflow water energy-saving and emission reduction system.

[0006] The utility model is implemented by the following technical solutions:

[0007] An acetylene gas tank overflow water energy-saving and emission-reduction system comprises an acetylene gas inlet pipeline, an acetylene gas tank, a collecting tank, a wet acetylene generator and a production water replenishment tank;

[0008] The acetylene gas holder is a double-throttle gas holder; the outlet end of the acetylene gas inlet pipeline is connected to the inlet end of the inlet pipeline of the acetylene gas holder;

[0009] The overflow port of the gas tank water tank of the acetylene gas tank is connected to the inlet of the collecting tank through a pipeline, and the water outlet of the collecting tank is connected to the water inlet of the circulating pump through a pipeline. The water outlet of the circulating pump is divided into two paths, one of which is connected to the water replenishment port of the middle water tank, and the other is connected to the water inlet of the wet acetylene generator;

[0010] The water outlet of the production water make-up tank is divided into three routes, two of which are connected to the water supply port of the middle water tank of the acetylene gas holder and the water supply port of the gas holder water tank through pipelines respectively, and the other route is connected to the mechanical seal cooling water inlet of the circulating pump through a pipeline, and the mechanical seal cooling water outlet of the circulating pump is connected to the water supply port of the middle water tank through a reflux pipeline.

[0011] Furthermore, it also includes a gas-liquid separator; the gas outlet end of the acetylene gas inlet pipeline is connected to the gas inlet of the gas-liquid separator, the gas phase outlet of the gas-liquid separator is connected to the gas inlet end of the inlet pipeline of the acetylene gas cabinet through a pipeline, and the liquid phase outlet of the gas-liquid separator is connected to the inlet of the collection tank through a pipeline.

[0012] Furthermore, a first liquid level sensor, a second liquid level sensor and a third liquid level sensor are respectively provided in the middle water tank, the gas tank and the collecting tank; a first water supply valve and a second water supply valve are respectively provided on the pipelines connecting the production water supply tank with the middle water tank and the gas tank; a regulating valve is provided on the connecting pipeline between the circulation pump and the wet acetylene generator;

[0013] The signal output ends of the first liquid level sensor, the second liquid level sensor and the third liquid level sensor are all signal-connected to the signal input ends of the controller, and the signal output ends of the controller are signal-connected to the signal input ends of the first water supply valve, the second water supply valve and the regulating valve, respectively.

[0014] Advantages of the utility model:

[0015] 1. It can realize the recycling of water resources: by adding a collection tank, the condensate collected in the gas-liquid separator and the overflow water of the gas tank water tank can be collected. The collected water and the mechanical seal cooling return water of the circulating pump can be continuously replenished to the middle water tank. The water in the middle water tank overflows into the gas tank water tank. When the gas tank water tank is full, it overflows into the collection tank, thereby realizing recycling and greatly reducing the consumption and discharge of production water.

[0016] 2. Double insurance ensures that the middle water tank and the gas tank are in a full liquid level state: by continuously replenishing water to the middle water tank and monitoring the liquid level, once the liquid level is low, water is replenished through the production water replenishment tank to ensure that the liquid level in the middle water tank and the gas tank is full, thereby ensuring the sealing effect, avoiding acetylene gas leakage due to low liquid level, and ensuring the safe and stable operation of the acetylene gas tank. Description of the drawings:

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of system connection of this embodiment;

[0019] Figure 2 Schematic diagram of signal control principle of this embodiment.

[0020] In the figure: acetylene gas inlet pipeline 1, acetylene gas tank 2, collecting tank 3, wet acetylene generator 4, production water make-up tank 5, gas-liquid separator 6, gas tank water tank 7, middle section water tank 8, circulating pump 9, first liquid level sensor 10, second liquid level sensor 11, third liquid level sensor 12, controller 13, first water make-up valve 14, second water make-up valve 15, regulating valve 16. Specific implementation method:

[0021] 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.

[0022] Embodiment 1:

[0023] like Figure 1 , Figure 2 The acetylene gas tank overflow water energy saving and emission reduction system shown includes an acetylene gas inlet pipeline 1, an acetylene gas tank 2, a collecting tank 3, a wet acetylene generator 4 and a production water replenishment tank 5; and also includes a gas-liquid separator 6;

[0024] The acetylene gas cabinet 2 is a double-throttle gas cabinet; the outlet end of the acetylene gas inlet pipeline 1 is connected to the air inlet of the gas-liquid separator 6, the gas phase outlet of the gas-liquid separator 6 is connected to the air inlet end of the air inlet pipeline of the acetylene gas cabinet 2 through a pipeline, and the liquid phase outlet of the gas-liquid separator 6 is connected to the inlet of the collecting tank 3 through a pipeline.

[0025] The overflow port of the gas tank water tank 7 of the acetylene gas tank 2 is connected to the inlet of the collecting tank 3 through a pipeline, and the water outlet of the collecting tank 3 is connected to the water inlet of the circulating pump 9 through a pipeline. The water outlet of the circulating pump 9 is divided into two paths, one of which is connected to the water replenishment port of the middle water tank 8, and the other is connected to the water inlet of the wet acetylene generator 4;

[0026] The outlet of the production water make-up tank 5 is divided into three routes, two of which are connected to the water supply port of the middle water tank 8 of the acetylene gas holder 2 and the water supply port of the gas holder water tank 7 through pipelines, and the other route is connected to the mechanical seal cooling water inlet of the circulating pump 9 through a pipeline, and the mechanical seal cooling water outlet of the circulating pump 9 is connected to the water supply port of the middle water tank 8 through a reflux pipeline.

[0027] A first liquid level sensor 10, a second liquid level sensor 11 and a third liquid level sensor 12 are respectively provided in the middle water tank 8, the gas tank water tank 7 and the collecting tank 3; a first water supply valve 14 and a second water supply valve 15 are respectively provided on the pipelines connecting the production water supply tank 5 with the middle water tank 8 and the gas tank water tank 7; a regulating valve 16 is provided on the pipeline connecting the circulation pump 9 and the wet acetylene generator 4;

[0028] The signal output ends of the first liquid level sensor 10, the second liquid level sensor 11 and the third liquid level sensor 12 are all signal-connected to the signal input end of the controller 13, and the signal output end of the controller 13 is signal-connected to the signal input ends of the first water supply valve 14, the second water supply valve 15 and the regulating valve 16 respectively.

[0029] Job Description:

[0030] In this embodiment, by adding a collection tank 3, the condensate collected in the gas-liquid separator 6 and the overflow water of the gas tank water tank 7 can be collected, and the collected water and the mechanical seal cooling return water of the circulating pump 9 can be continuously replenished to the middle section water tank 8. The water in the middle section water tank 8 overflows into the gas tank water tank 7, and the gas tank water tank 7 overflows into the collection tank 3 after being full of liquid level. When the third liquid level sensor 12 detects that the liquid level in the collecting tank 3 has reached a preset high liquid level value, the regulating valve 16 is opened to send the water in the collecting tank 3 to the wet acetylene generator 4, thereby reducing the water consumption for wet preparation of acetylene; when the first liquid level sensor 10 detects that the liquid level in the middle water tank 8 has reached a preset low liquid level value, the first water replenishment valve 14 is opened to replenish water into the middle water tank 8 from the production water replenishment tank 5; when the second liquid level sensor 11 detects that the liquid level in the gasholder water tank 7 has reached a preset low liquid level value, the second water replenishment valve 15 is opened to replenish water into the gasholder water tank 7 from the production water replenishment tank 5.

[0031] In this embodiment, while continuously replenishing water into the middle water tank 8, a first liquid level sensor 10 and a second liquid level sensor 11 are provided to monitor the liquid levels in the middle water tank 8 and the gas tank 7, which is equivalent to a double insurance for the liquid levels in the middle water tank 8 and the gas tank 7, ensuring that the liquid levels in the middle water tank 8 and the gas tank 7 are in a full liquid level state, thereby ensuring the sealing effect, avoiding acetylene gas leakage due to low liquid level, and ensuring the safe and stable operation of the acetylene gas tank 2.

[0032] In addition, under normal circumstances, the condensate and overflow water collected by the mechanical seal return water and the collecting tank 3 can ensure the full liquid level of the middle water tank 8 and the gas tank water tank 7. The production water make-up tank 5 only needs to provide mechanical seal cooling water to the circulating pump 9. Only when the amount of condensate and overflow water collected by the mechanical seal return water and the collecting tank 3 cannot meet the full liquid level of the middle water tank 8 and the gas tank water tank 7, the production water make-up tank 5 is needed to replenish water to the middle water tank 8. Therefore, this embodiment can greatly reduce the consumption of production water.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An acetylene gas tank overflow water energy saving and emission reduction system, characterized in that: It includes acetylene gas inlet pipeline, acetylene gas cabinet, collection tank, wet acetylene generator and production water make-up tank; The acetylene gas holder is a double-throttle gas holder; the outlet end of the acetylene gas inlet pipeline is connected to the inlet end of the inlet pipeline of the acetylene gas holder; The overflow port of the gas tank water tank of the acetylene gas tank is connected to the inlet of the collecting tank through a pipeline, and the water outlet of the collecting tank is connected to the water inlet of the circulating pump through a pipeline. The water outlet of the circulating pump is divided into two paths, one of which is connected to the water replenishment port of the middle water tank of the acetylene gas tank, and the other is connected to the water inlet of the wet acetylene generator; The water outlet of the production water make-up tank is divided into three routes, two of which are connected to the water supply port of the middle water tank of the acetylene gas holder and the water supply port of the gas holder water tank through pipelines respectively, and the other route is connected to the mechanical seal cooling water inlet of the circulating pump through a pipeline, and the mechanical seal cooling water outlet of the circulating pump is connected to the water supply port of the middle water tank through a reflux pipeline.

2. The acetylene gas tank overflow water energy saving and emission reduction system according to claim 1 is characterized in that: It also includes a gas-liquid separator; the gas outlet end of the acetylene gas inlet pipeline is connected to the gas inlet of the gas-liquid separator, the gas phase outlet of the gas-liquid separator is connected to the gas inlet end of the inlet pipeline of the acetylene gas cabinet through a pipeline, and the liquid phase outlet of the gas-liquid separator is connected to the inlet of the collection tank through a pipeline.

3. The acetylene gas tank overflow water energy saving and emission reduction system according to claim 1 is characterized in that: A first liquid level sensor, a second liquid level sensor and a third liquid level sensor are respectively provided in the middle water tank, the gas tank and the collecting tank; a first water supply valve and a second water supply valve are respectively provided on the pipelines connecting the production water supply tank with the middle water tank and the gas tank; a regulating valve is provided on the connecting pipeline between the circulation pump and the wet acetylene generator; The signal output ends of the first liquid level sensor, the second liquid level sensor and the third liquid level sensor are all signal-connected to the signal input ends of the controller, and the signal output ends of the controller are signal-connected to the signal input ends of the first water supply valve, the second water supply valve and the regulating valve, respectively.

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