Carbon disulfide water seal water stripping system

Abstract

A carbon disulfide water seal water stripping system relates to the technical field of water treatment and comprises a stripping tower, a water seal pool, a water delivery pump and a heating unit, the water seal pool is filled with water, the water delivery pump is mounted between the stripping tower and the water seal pool through a pipeline, and the water outlet end of the delivery pump is connected with the top end in the stripping tower; the stripping tower is internally provided with a filler layer allowing water to flow, the heating unit is arranged at the lower end of the stripping tower through a pipeline, and the stripping tower, the conveying pump and the air heater are arranged, so that a set of efficient water seal water purification treatment process is constructed; and then, the carbon disulfide and the hydrogen sulfide in the water seal water are fully contacted with hot air entering from the bottom of the tower in the filler layer, so that the carbon disulfide and the hydrogen sulfide which are separated can be effectively separated out, then, the separated carbon disulfide and the separated hydrogen sulfide enter the sulfur production furnace through the exhaust pipe to be combusted, and the combusted tail gas enters the acid production unit to produce acid, so that the tail gas is fully recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field more specifically, relate to a kind of carbon disulfide water seal water stripping system. BACKGROUND

[0002] Carbon disulfide storage tank belongs to atmospheric storage tank, in the storage process of carbon disulfide, a large amount of clean water is needed to water seal, so that carbon disulfide is isolated from the outside world. Since carbon disulfide is slightly soluble in water, a small amount of carbon disulfide and a small amount of hydrogen sulfide will appear in the clean water used for water seal after long-term storage, and a large amount of sewage will be generated. Moreover, the carbon disulfide water seal water tank is an open pool, and during long-term operation, carbon disulfide gas may be released from the water seal water, which poses a certain safety hazard.

[0003] In addition, to ensure the quality of carbon disulfide water seal water, the water seal water needs to be replaced with clean water regularly to ensure the quality of the water seal water. However, regular water replacement will increase the amount of sewage discharge. The sewage is discharged into the sewage tank through the sewage pipe network, and long-term discharge may cause carbon disulfide gas to accumulate in the sewage pipe network, posing a certain safety hazard. SUMMARY

[0004] The utility model aims at overcoming the above-mentioned problems in the prior art, and provides a carbon disulfide water seal process based on steam stripping of water seal water, which separates trace amounts of carbon disulfide and hydrogen sulfide contained in the water seal water, realizes full utilization of the water seal water, and avoids the safety hazard problems existing in the operation and discharge processes of the water seal water.

[0005] The utility model provides a carbon disulfide water seal water stripping system, which comprises a stripping tower, a water seal water tank, a water pump and a heating unit.

[0006] The water seal water tank is filled with water, the water pump is installed between the stripping tower and the water seal water tank through a pipeline, and the water outlet of the water pump is connected to the top of the stripping tower;

[0007] The stripping tower is provided with a filler layer along the inside, and the filler layer is provided with fillers for contacting liquid, and a liquid separator is arranged above the filler layer and is in communication with the filler layer. In use, the liquid separator can uniformly distribute the water in the filler layer.

[0008] The heating unit is arranged at the lower end of the stripping tower through a pipeline, and in use, the heating unit can contact hot air with the liquid in the filler layer.

[0009] Preferably, the heating unit is a hot air blower, which is connected to the bottom of the stripping tower through a pipeline, and the hot air blown by the hot air blower can contact the descending liquid through the filler layer, and the small amount of carbon disulfide and hydrogen sulfide in the water seal water can be separated by the hot air.

[0010] Preferably, the top of the stripping tower is further provided with a gas outlet for discharging gas.

[0011] Preferably, the filler in the filler layer is a 316L wire mesh demister.

[0012] Preferably, the stripping tower is further provided with a sulfur making furnace on one side, and the gas outlet of the stripping tower is provided with an exhaust pipe for gas transmission, which can transport the separated carbon disulfide and hydrogen sulfide to the sulfur making furnace for combustion, and after combustion, carbon dioxide, sulfur dioxide and water vapor can be generated.

[0013] Preferably, a reflux pipeline for discharging water seal water is further arranged between the stripping tower and the water seal tank, and the reflux pipeline comprises a reflux pipe and a manual gate valve, wherein the reflux pipe is arranged between the stripping tower and the water seal tank, and the manual gate valve is arranged at the inlet end of the reflux pipe.

[0014] From the above scheme, the present scheme sets up a set of efficient water seal water purification process by arranging the stripping tower, the delivery pump and the hot air blower, in actual use, the water seal water is transported into the stripping tower, and then fully contacts with the hot air entering from the bottom in the filler layer, so that the carbon disulfide and hydrogen sulfide in the water seal water can be effectively separated, then the separated carbon disulfide and hydrogen sulfide enter the sulfur making furnace for combustion through the exhaust pipe, and finally are converted into carbon dioxide and water vapor which have relatively small influence on the environment, through the whole process, not only the problem of a large amount of sewage caused by regular water change is avoided, but also the safety hidden danger caused by the accumulation of carbon disulfide gas in the sewage pipe network is eliminated, and the double protection of safety and environmental protection is successfully realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a process schematic diagram of a carbon disulfide water seal water stripping system of the utility model.

[0016] Figure 1 Preferably, the heating unit is a hot air blower, which is connected to the bottom of the stripping tower through a pipeline, and the hot air blown by the hot air blower can contact the descending liquid through the filler layer, and the small amount of carbon disulfide and hydrogen sulfide in the water seal water can be separated by the hot air. DETAILED DESCRIPTION

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] As attached Figure 1 As shown: A carbon disulfide water-sealed stripping system includes a stripping tower 1, a water-sealed pool 4, and a transfer pump 3. The transfer pump 3 is installed between the stripping tower 1 and the water-sealed pool 4 through a pipeline, and the water outlet of the transfer pump 3 is connected to the top of the interior of the stripping tower 1. A hot air blower 2 is installed at the bottom of the stripping tower 1 through a pipeline. This design allows the water pump to transport water from the water-sealed pool 4 to the upper interior of the stripping tower 1 through the pipeline, while the hot air blower 2 can transport hot air to the lower interior of the stripping tower 1 through the pipeline.

[0019] Meanwhile, a packing layer is installed in the middle and upper parts of the stripping tower 1. This packing layer increases the contact area and contact time between the hot air and the water seal water. A liquid separator, connected to the packing layer, is also installed above it. This design ensures that when the water seal water in the stripping tower 1 comes into contact with the liquid separator, it is evenly distributed throughout the packing layer and flows downwards along the packing surface. Meanwhile, hot air, such as that generated by the F-701 hot air blower 2, enters from the bottom of the tower, flows upwards, and contacts the descending liquid through the packing layer. During this contact process, the hot air separates small amounts of carbon disulfide and hydrogen sulfide from the water seal water.

[0020] Furthermore, to enhance the contact effect between gas and liquid in the packing layer, the depth of the packing layer can be increased to 3 meters. This design increases the contact area and contact time between hot air and the water seal. Additionally, it should be noted that the packing material within the packing layer is specifically a 316L wire mesh demister, which, during use, captures liquid droplets in the airflow through the interception effect of the wire mesh, thereby achieving gas-liquid separation.

[0021] Furthermore, a return pipeline for discharging the water seal water is installed between the stripping tower 1 and the water seal pool 4. This return pipeline includes a return pipe and a manual gate valve. The return pipe is located between the stripping tower 1 and the water seal pool 4, while the manual gate valve is located at the inlet end of the return pipe. This design allows the carbon disulfide and hydrogen sulfide in the water seal water to be separated and then discharged back into the water seal pool 4 through the return pipeline.

[0022] Furthermore, to facilitate the collection of the separated carbon disulfide and hydrogen sulfide, an outlet is provided at the top of the stripping tower 1. During use, the separated carbon disulfide and hydrogen sulfide can be discharged through the outlet.

[0023] In this embodiment, the water seal water stripping system of the present solution further comprises a sulfur production furnace 5, and an exhaust pipe is arranged between the exhaust port of the stripping tower 1 and the sulfur production furnace 5. Through this design, the exhaust pipe can transport the separated carbon disulfide and hydrogen sulfide to the sulfur production furnace 5 for combustion. Since the inside of the sulfur production furnace 5 is in a high-temperature and oxygen-containing environment, after the carbon disulfide and hydrogen sulfide are combusted therein, they will react with oxygen to generate carbon dioxide and water vapor, and even if these substances are directly discharged, their impact on the environment is relatively small. In addition, carbon disulfide and hydrogen sulfide will also generate sulfur dioxide when combusted in the sulfur production furnace 5.

[0024] Further, a communication pipeline is further arranged between the sulfur production furnace 5 and an external acid production unit. This design allows the sulfur dioxide and water vapor generated after combustion in the sulfur production furnace 5 to enter the external acid production unit through the pipeline, and then generate sulfuric acid in the acid production unit. It should be noted that the acid production unit is a core part of sulfuric acid production, which belongs to the prior art.

[0025] Generally, an acid production unit usually includes the following key parts:

[0026] Converter: Sulfur dioxide (SO2) is converted to sulfur trioxide (SO3) here. This step usually requires a catalyst and is an exothermic reaction.

[0027] Absorption tower: The converted sulfur trioxide (SO3) reacts with water or excess sulfuric acid in the absorption tower to generate sulfuric acid.

[0028] Drying tower: Before conversion, sulfur dioxide gas needs to be dried to remove moisture to prevent acid mist formation during the conversion process.

[0029] Purification system: Including scrubbing towers and other equipment, used to remove impurities such as dust, heavy metals, and other harmful substances from the flue gas.

[0030] Tail gas treatment system: Treats the tail gas discharged during the conversion process to ensure it meets environmental emission standards.

[0031] Heat exchanger: Used to recover heat generated during the reaction process, improving the energy efficiency of the entire production process.

[0032] Control system: Including various instruments and automation equipment, used to monitor and control the entire sulfuric acid production process.

[0033] Storage and transportation facilities: Used to store finished sulfuric acid and transport it to the market or further use.

[0034] In use, the carbon dioxide and water vapor generated by combustion in the sulfur production furnace enters the acid production unit through the pipeline, and in the acid production unit, the sulfur dioxide converter uses catalyst to promote the reaction of sulfur dioxide and oxygen to generate sulfur trioxide. The heat exchanger recovers the reaction heat to improve energy utilization efficiency. The sulfur trioxide absorption tower absorbs sulfur trioxide by concentrated sulfuric acid to produce sulfuric acid.

[0035] As shown in Figure 1 The packing layer in the stripping tower 1 also has a second arrangement, for example, a number of separate separation chambers can be arranged at the upper end to the lower end in the stripping tower 1, the separation chamber is provided with a packing layer, and an appropriate liquid separator is also provided above the packing layer. Then, a water guide main pipe is arranged in the vertical direction on the left side inside the stripping tower 1, one end of the water guide main pipe is connected with the water outlet end of the delivery pump 3, and the water guide main pipe is also communicated with the separation chamber at the corresponding position through a water guide branch pipe. This design allows the delivery pump 3 to inject water seal water into the separation chamber at the corresponding position through the water guide main pipe and the water guide branch pipe, and then the water seal water contacts the liquid separator in the separation chamber and flows downward towards the packing surface.

[0036] Next, a wind guide main pipe is arranged in the vertical direction on the right side inside the stripping tower 1, one end of the wind guide main pipe is connected with the water outlet end of the hot air machine 2, and the wind guide main pipe is also communicated with the separation chamber at the corresponding position through a wind guide branch pipe. This design allows the hot air machine 2 to inject hot air into the separation chamber at the corresponding position through the wind guide main pipe and the wind guide branch pipe, and then the hot air flows upward in the separation chamber, at this time the water seal water flowing downward in the packing layer can contact the hot air, and thus the carbon disulfide and hydrogen sulfide in the water seal water in this layer of separation chamber can be separated.

[0037] In addition, an exhaust main pipe is arranged in the vertical direction on the back side inside the stripping tower 1, the exhaust main pipe is communicated with the sulfur production furnace 5, and a corresponding exhaust branch pipe can also be communicated between the exhaust main pipe and the separation chamber at the corresponding position. In use, the separated carbon disulfide and hydrogen sulfide in this layer of separation chamber can enter the exhaust main pipe through the exhaust branch pipe, and then enter the sulfur production furnace 5. This design can also achieve the separation of carbon disulfide and hydrogen sulfide in the water seal water.

[0038] Further, to facilitate the discharge of the separated water seal water, a drainage main pipe can be arranged in the vertical direction on one side inside the stripping tower 1, one end of the drainage main pipe is connected with the water seal tank 4, and a drainage branch pipe can be communicated with the opposite side of the separation chamber and the drainage pipe. This design allows the carbon disulfide and hydrogen sulfide in the water seal water to be discharged through the drainage branch pipe and the drainage main pipe after separation.

[0039] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any person skilled in the art can make modifications or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be the protection scope of the claims.

Claims

1. A carbon disulfide aqueous seal water stripping system characterized by, The utility model relates to a stripping tower, water seal water tank, water pump and heating unit, which are connected through pipelines. The water seal water tank (4) is filled with water, and the water pump (3) is connected to the top of the stripping tower (1) through a pipeline. The stripping tower (1) is provided with a filler layer along the inside, and the filler layer is provided with fillers for contacting liquid. The heating unit is provided at the lower end of the stripping tower (1) through a pipeline, and can contact hot air with the liquid in the filler layer. The heating unit is a hot air blower (2) which is connected to the bottom of the stripping tower (1) through a pipeline.

2. A carbon disulfide water seal vapor stripping system as defined in claim 1, wherein: The hot air blown by the hot air blower (2) can contact with the descending liquid through the filler layer, and can separate a small amount of carbon disulfide and hydrogen sulfide in the water seal water by using hot air.

3. A carbon disulfide water seal vapor stripping system as defined in claim 1, wherein: The stripping tower (1) is also provided with a gas outlet at the top for discharging gas.

4. A carbon disulfide water seal vapor stripping system as defined in claim 1, wherein: The fillers in the filler layer are 316L wire mesh demisters.

5. A carbon disulfide water seal vapor stripping system as defined in claim 3, wherein: The stripping tower (1) is also provided with a sulfur production furnace (5) on one side.

6. A carbon disulfide water seal vapor stripping system as defined in claim 1, wherein: The gas outlet of the stripping tower (1) and the sulfur production furnace (5) are provided with an exhaust pipe for gas transmission. The exhaust pipe can transport the separated carbon disulfide and hydrogen sulfide to the sulfur production furnace (5) for combustion, and can react to generate carbon dioxide, sulfur dioxide and water vapor after combustion. The stripping tower (1) is also provided with a backflow pipeline between the water seal water tank (4) for discharging water seal water. The backflow pipeline includes a backflow pipe and a manual gate valve. The backflow pipe is arranged between the stripping tower (1) and the water seal water tank (4), and the manual gate valve is arranged at the inlet end of the backflow pipe.

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