Carbon disulfide sealed storage device
By designing a carbon disulfide storage device with a double-sealed structure and a cooling and condensation system, the safety hazards of carbon disulfide storage in chemical production have been solved, achieving effective sealing and safety improvement, and protecting the health of employees.
Patent Information
- Application Number
- CN202520158969.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-23
AI Technical Summary
In chemical production, the storage of carbon disulfide poses safety hazards, as it is volatile and can harm the health of employees. Existing technologies are insufficient to effectively prevent its volatilization and reduce safety risks.
Design a storage device including a sealed tank, employing a dual sealing structure of water seal and gas seal, combined with a cooling and condensation system to ensure the sealing of carbon disulfide, and maintain the sealing effect through liquid level control and an automatic water replenishment system to reduce the risk of volatilization.
It effectively seals carbon disulfide, reduces the risk of combustion and explosion, prevents carbon disulfide from evaporating into the air, and protects the health of workers.
Smart Images
Figure CN223619367U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical technology, specifically to a sealed storage device for carbon disulfide. Background Technology
[0002] Carbon disulfide is a colorless liquid. Pure carbon disulfide used in the laboratory has a sweet, aromatic odor similar to chloroform, but impure industrial-grade carbon disulfide, often mixed with other sulfides (such as carbonyl sulfide), turns slightly yellow and has an unpleasant rotten radish smell. It can dissolve elemental sulfur. Carbon disulfide is used in the manufacture of rayon, pesticides, accelerators, and is also used as a solvent. Carbon disulfide is denser than water, insoluble in water, has a boiling point of 46.2°C, and an ignition temperature of 90°C. At room temperature and pressure, carbon disulfide is a colorless, transparent, slightly aromatic, fat-soluble liquid with extremely high volatility, flammability, and explosiveness.
[0003] Nevertheless, carbon disulfide is an important raw material in chemical production, such as in the synthesis of tetraethylthiuram disulfide. When using carbon disulfide, it is essential to ensure it is kept away from air and to prevent its volatilization into the air, which could harm employees. Currently, carbon disulfide is mostly stored directly in tanks, posing a serious safety hazard. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a sealed carbon disulfide storage device that can prevent the volatilization of carbon disulfide during use and reduce safety risks.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a carbon disulfide sealed storage device, comprising a sealed storage tank, characterized in that: the lower part of the sealed storage tank is a carbon disulfide storage section, and the upper part is a water seal section; a cooling coil is wound around the lower part of the sealed storage tank; the top of the sealed storage tank is provided with a carbon disulfide inlet pipeline, a nitrogen inlet pipeline, a water seal inlet pipeline, a non-condensable gas exhaust pipeline, and a condensate recovery pipeline; the non-condensable gas exhaust pipeline is connected to the condenser inlet pipe; the condensate outlet pipeline of the condenser is connected to the condensate recovery pipeline; the bottom of the sealed storage tank is provided with a carbon disulfide outlet pipeline, and an automatic control valve is installed on the carbon disulfide outlet pipeline; a water seal pipeline is provided on the top of the side of the sealed storage tank and connected to a carbon disulfide water seal pool; the carbon disulfide water seal pool is connected to the inlet pipeline of a water seal pump via an outlet pipeline; and a branch pipeline from the outlet pipeline of the water seal pump is connected to the water seal inlet pipeline.
[0006] In the above scheme: a water supply pipe is installed on the carbon disulfide water seal tank to replenish the water seal tank with new water.
[0007] In the above scheme: the outlet pipeline of the water seal pump is also connected to a wastewater treatment plant. The water seal water is pumped to the wastewater treatment plant for subsequent wastewater treatment via the water seal pump.
[0008] In the above scheme: the outlet pipeline of the carbon disulfide water seal tank is connected to the water seal pump through the liquid seal tank of the water seal pump. The water seal pump is a centrifugal pump, and a liquid seal is set for the water seal pump, so priming is not required when the pump is started.
[0009] In the above scheme: water enters from the bottom of the cooling coil and exits from the top.
[0010] This utility model relates to a sealed carbon disulfide storage device. Carbon disulfide has a higher density than water. A liquid seal is installed at the top of the carbon disulfide (carbon disulfide and water are separated, with water on top and carbon disulfide at the bottom) to prevent the escape of volatile gases. A nitrogen pipeline is also installed to provide a gas seal above the water seal in the sealed storage tank, achieving double sealing protection. A carbon disulfide water seal pool is included, with a level gauge inside the sealed storage tank. When the level is high, the water in the sealed storage tank automatically flows into the carbon disulfide water seal pool. When the level is low, water from the water seal pool is pumped into the sealed storage tank. A cooling coil is installed to cool the carbon disulfide in the sealed storage tank when the outside temperature is high, reducing volatilization. A condenser is installed so that even if a small amount of non-condensable gases evaporate, they can be condensed and returned to the sealed storage tank. The sealing device of this invention can ensure the sealing of carbon disulfide, isolate it from air, reduce the risk of combustion and explosion, and prevent carbon disulfide from volatilizing into the air and harming the health of workers. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] Example 1: As Figure 1As shown, the carbon disulfide sealed storage device includes a sealed storage tank 1, which can be fixed on a base (at a high position). The lower part of the sealed storage tank 1 is the carbon disulfide storage section, and the upper part is the water seal section. A cooling coil 2 is wrapped around the lower part of the sealed storage tank 1. Water enters from the lower part of the cooling coil 2 and exits from the upper part. The water inlet end is connected to the condensate main pipe, and the water outlet end returns to the condensate storage tank. The top of the sealed storage tank 1 is equipped with a carbon disulfide inlet pipeline 101, a nitrogen inlet pipeline 102, a water seal inlet pipeline 103, a non-condensable gas exhaust pipeline 104, and a condensate recovery pipeline 105. Automatic control valves are installed on the carbon disulfide inlet pipeline 101, the nitrogen inlet pipeline 102, the water seal inlet pipeline 103, the non-condensable gas exhaust pipeline 104, and the condensate recovery pipeline 105. The carbon disulfide inlet line 101 is connected to the carbon disulfide unloading pump, and the non-condensable gas exhaust line 104 is connected to the inlet pipe of the condenser 3. The condenser 3 is existing technology. Figure 1 As shown, the system includes a shell layer and a tube layer. The shell layer carries condensate, while non-condensable gases pass through the tube layer, are condensed by the condensate in the shell layer, and exit from the condensate outlet pipeline. The condensate outlet pipeline of condenser 3 is connected to the condensate recovery pipeline 105. A carbon disulfide outlet pipeline 106 is installed at the bottom of the sealed storage tank 1, and an automatic control valve is installed on the carbon disulfide outlet pipeline 106. The carbon disulfide outlet pipeline is connected to the intermediate carbon disulfide storage tank via a transfer pump, and then directly enters the reactor via the intermediate buffer tank. A water seal pipeline is installed on the top side of the sealed storage tank 1, connecting to the carbon disulfide water seal pool 4. The carbon disulfide water seal pool 4 is connected to the inlet pipeline of the water seal pump 5 via an outlet pipeline. A branch pipeline from the outlet pipeline of the water seal pump 5 is connected to the water seal inlet pipeline 103. The outlet pipeline of the water seal pump 5 is also connected to a wastewater treatment station. A water replenishment pipeline 401 is installed on the carbon disulfide water seal pool 4. The outlet pipeline of the carbon disulfide water seal pool 4 is connected to the water seal pump 5 via the liquid seal tank 6 of the water seal pump 5.
[0014] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sealed carbon disulfide storage device, comprising a sealed storage tank (1), characterized in that: The lower part of the sealed storage tank (1) is a carbon disulfide storage section, and the upper part is a water seal section. A cooling coil (2) is wrapped around the lower part of the sealed storage tank (1). The top of the sealed storage tank (1) is equipped with a carbon disulfide inlet pipeline (101), a nitrogen inlet pipeline (102), a water seal inlet pipeline (103), a non-condensable gas exhaust pipeline (104), and a condensate recovery pipeline (105). The non-condensable gas exhaust pipeline (104) is connected to the inlet pipe of the condenser (3). The condenser (3)... The condensate outlet pipeline is connected to the condensate recovery pipeline (105). The bottom end of the sealed storage tank (1) is provided with a carbon disulfide outlet pipeline. An automatic control valve is provided on the carbon disulfide outlet pipeline. The top side of the sealed storage tank (1) is provided with a water seal pipeline connected to the carbon disulfide water seal pool (4). The carbon disulfide water seal pool (4) is connected to the inlet pipeline of the water seal pump (5) through the water outlet pipeline. A branch of the outlet pipeline of the water seal pump (5) is connected to the water seal inlet pipeline (103).
2. The carbon disulfide sealed storage device according to claim 1, characterized in that: A water supply pipe (401) is installed on the carbon disulfide water seal pool (4).
3. The carbon disulfide sealed storage device according to claim 2, characterized in that: The outlet pipeline of the water seal pump (5) is also connected to the wastewater treatment station.
4. The carbon disulfide sealed storage device according to any one of claims 1-3, characterized in that: The outlet pipeline of the carbon disulfide water seal pool (4) is connected to the water seal pump (5) through the liquid seal tank (6).
5. The carbon disulfide sealed storage device according to claim 4, characterized in that: The cooling coil (2) has water inlet at the bottom and water outlet at the top.