Safe storage device for dialkyl tertiary amine
By using a room temperature storage tank, a temperature-controlled storage tank and a mixing tank in a bisalkyl tertiary amine storage device, combined with the setting of high and low liquid outlet pipes, the problems of difficult to reduce the liquid phase temperature and high energy consumption in the existing devices are solved, and the effects of efficient cooling and energy consumption reduction are achieved.
Patent Information
- Application Number
- CN202422130722.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the storage process of bisalkyl tertiary amines, it is difficult for existing devices to effectively reduce the liquid phase temperature, and the cooling method has the problem of high energy consumption.
Through the combination of room temperature storage tanks, temperature-controlled storage tanks and mixing tanks, the high and low liquid outlet pipelines are set up to achieve mixed cooling of the liquid phase, improve cooling efficiency, and reduce the number of cooling times.
Effectively maintain the low temperature of the liquid in the temperature-controlled storage tank, improve the cooling efficiency, reduce the number of cooling times, and achieve rapid cooling through the setting of high and low liquid outlet pipes.
Smart Images
Figure CN223031851U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dialkyl tertiary amine production, in particular to a safety storage device for dialkyl tertiary amine. Background Technique
[0002] Dialkyl tertiary amine is a class of organic compounds with two long carbon chains and one amino group. Such compounds are usually colorless to light yellow liquids with a weak amine odor. They have a low vapor pressure at room temperature and good solubility, and can be dissolved in water, alcohols and ketone solvents. Dialkyl tertiary amine is commonly used as a surfactant and a common solvent for amines, and is also used in the production processes of polyurethane and synthetic rubber, as well as a concrete additive and preservative.
[0003] During the storage process of dialkyl tertiary amine, it generally needs to be kept below 37°C. In the existing devices, the temperature is generally controlled by the way of spray cooling. However, there is a problem that the liquid phase temperature near the tank wall has dropped, but the internal liquid phase temperature is still relatively high. After the spray stops, the temperature in the pipe rises again within a certain period of time. At the same time, if the internal coil cooling method is used for both tanks, there is also a problem of increased energy consumption. Content of the Utility Model
[0004] According to the above deficiencies in the prior art, the purpose of the utility model is to provide a safety storage device for dialkyl tertiary amine. By the combined use of a normal temperature storage tank, a temperature-controlled storage tank and a mixing tank, the liquid phase in the temperature-controlled storage tank is kept at a relatively low temperature. When the liquid phase temperature in the normal temperature storage tank rises, the liquid phase therein is pumped out to the mixing tank and mixed with the low-temperature liquid phase in the temperature-controlled storage tank to reduce the liquid phase temperature in the normal temperature storage tank, improve the cooling efficiency and reduce the cooling times. Through the setting of the high-position liquid outlet pipeline and the low-position liquid outlet pipeline, generally, only the high-position liquid outlet pipeline is used to cool the liquid phase. In this way, a certain amount of low-temperature liquid phase is stored in the cold liquid storage tank. When the temperature of the normal temperature storage tank rises, it can be quickly cooled through the low-position liquid outlet pipeline.
[0005] The utility model is realized by adopting the following technical scheme:
[0006] The safety storage device for dialkyl tertiary amine includes a normal temperature storage tank, a temperature-controlled storage tank and a cold liquid storage tank. A pressure observation U-shaped tube is arranged on the normal temperature storage tank. The normal temperature storage tank is connected to the mixing tank through a pump for pumping out of the normal temperature storage tank. A temperature control coil is arranged inside the temperature-controlled storage tank. The temperature-controlled storage tank is connected to the mixing tank through a pump for pumping out of the temperature-controlled storage tank. The cold liquid storage tank is connected to the temperature control coil through a cold liquid variable-frequency pump.
[0007] The pressure observation U-shaped tube is used to monitor the pressure change in the normal temperature storage tank. When the liquid phase in the pressure observation U-shaped tube is discharged, it proves that the pressure in the normal temperature storage tank is increasing. A temperature detector is arranged on the normal temperature storage tank.
[0008] The described normal-temperature storage tank is equipped with a safety valve. The pressure observation U-tube is filled with liquid phase inside, a gas detector is provided at the outlet of the pressure observation U-tube, and a liquid level gauge is provided outside the pressure observation U-tube.
[0009] A spray tray is provided above the described normal-temperature storage tank, and a stirrer driven by a stirring motor is provided inside the mixing tank. The spray tray is used to cool down the normal-temperature storage tank.
[0010] A refrigerator is connected to the described cold liquid temporary storage tank. A low-level liquid discharge pipeline is connected between the cold liquid temporary storage tank and the cold liquid variable-frequency pump, and the cold liquid temporary storage tank is connected to the low-level liquid discharge pipeline through a high-level liquid discharge pipeline.
[0011] The connection point of the described low-level liquid discharge pipeline and the cold liquid temporary storage tank is located at the bottom of the cold liquid temporary storage tank, and the connection point of the high-level liquid discharge pipeline and the cold liquid temporary storage tank is located at the 1 / 2 - 2 / 3 position of the vertical wall of the cold liquid temporary storage tank.
[0012] The described cold liquid variable-frequency pump is connected to the inlet of the temperature control coil through an inlet temperature control coil pipeline, and the outlet of the temperature control coil is connected to the refrigerator through a pipeline.
[0013] The described cold liquid variable-frequency pump is connected to the spray tray through an inlet spray tray pipeline.
[0014] The described mixing tank is connected to the normal-temperature storage tank through a return pump. A return pipeline is provided between the return pump and the normal-temperature storage tank, and a connecting pipeline is connected to the return pipeline.
[0015] The working principle of the present utility model is as follows:
[0016] The dialkyl tertiary amine is stored in the normal-temperature storage tank and the temperature control storage tank (the dialkyl tertiary amine is preferentially stored in the temperature control storage tank). The low-temperature liquid phase prepared by the refrigerator enters the cold liquid temporary storage tank, and then is pumped into the temperature control coil through the high-level liquid discharge pipeline by the cold liquid variable-frequency pump to control the temperature of the dialkyl tertiary amine in the temperature control storage tank; when the temperature of the normal-temperature storage tank rises, the temperature control storage tank outlet pump and the normal-temperature storage tank outlet pump are turned on to mix and cool down the dialkyl tertiary amine in the normal-temperature storage tank and the temperature control storage tank, and then it is pumped into the normal-temperature storage tank through the return pump. At the same time, the liquid discharge pipeline of the cold liquid temporary storage tank is changed to the low-level liquid discharge pipeline, and the outer wall of the normal-temperature storage tank is cooled down through the spray tray. Among them, the pressure observation U-tube is used to monitor the pressure change in the normal-temperature storage tank. When the liquid phase in the pressure observation U-tube is discharged, it proves that the pressure in the normal-temperature storage tank is increasing. A temperature detector is provided on the normal-temperature storage tank.
[0017] Compared with the prior art, the beneficial effects of the present utility model are:
[0018] By using the safety storage device for dialkyl tertiary amine of the present utility model, through the combined use of a normal temperature storage tank, a temperature-controlled storage tank, and a mixing tank, the liquid phase in the temperature-controlled storage tank is maintained at a relatively low temperature. When the temperature of the liquid phase in the normal temperature storage tank rises, the liquid phase therein is pumped into the mixing tank and mixed with the low-temperature liquid phase in the temperature-controlled storage tank to lower the temperature of the liquid phase in the normal temperature storage tank, improve the cooling efficiency, and reduce the number of cooling times; through the setting of the high-position liquid outlet pipeline and the low-position liquid outlet pipeline, generally, only the liquid phase needs to be cooled through the high-position liquid outlet pipeline, so that a certain amount of low-temperature liquid phase is stored in the cold liquid temporary storage tank. When the temperature of the normal temperature storage tank rises, it can be quickly cooled through the low-position liquid outlet pipeline. Description of the Drawings
[0019] Figure 1 It is a schematic structural diagram of the safety storage device for dialkyl tertiary amine of the present utility model;
[0020] In the figure: 1, normal temperature storage tank; 2, temperature-controlled storage tank; 3, mixing tank; 4, cold liquid temporary storage tank; 5, refrigerating machine; 6, safety valve; 7, pressure observation U-tube; 8, gas detector; 9, liquid level gauge; 10, stirrer; 11, high-position liquid outlet pipeline; 12, low-position liquid outlet pipeline; 13, cold liquid variable-frequency pump; 14, pipeline for entering the spray tray; 15, spray tray; 16, pump for discharging from the temperature-controlled storage tank; 17, pump for discharging from the normal temperature storage tank; 18, return pump; 19, return pipeline; 20, connecting pipeline; 21, pipeline for entering the temperature-controlled coil; 22, temperature-controlled coil. Detailed Embodiments
[0021] In order to make the purpose and technical solutions of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0022] Embodiment 1
[0023] As Figure 1As shown in the figure, the safety storage device for dialkyl tertiary amine includes a normal temperature storage tank 1, a temperature-controlled storage tank 2, and a cold liquid temporary storage tank 4. A pressure observation U-tube 7 is provided on the normal temperature storage tank 1. The normal temperature storage tank 1 is connected to a mixing tank 3 through a normal temperature storage tank pump 17. A temperature-controlled coil 22 is provided inside the temperature-controlled storage tank 2. The temperature-controlled storage tank 2 is connected to the mixing tank 3 through a temperature-controlled storage tank pump 16. The cold liquid temporary storage tank 4 is connected to the temperature-controlled coil 22 through a cold liquid variable frequency pump 13. The pressure observation U-tube 7 is used to monitor the pressure change in the normal temperature storage tank 1. When the liquid phase in the pressure observation U-tube 7 is discharged, it proves that the pressure in the normal temperature storage tank 1 is increasing. A temperature detector is provided on the normal temperature storage tank 1. A safety valve 6 is provided on the normal temperature storage tank 1. A liquid phase is provided inside the pressure observation U-tube 7. A gas detector 8 is provided at the outlet of the pressure observation U-tube 7. A liquid level gauge 9 is provided outside the pressure observation U-tube 7. A spray disc 15 is provided above the normal temperature storage tank 1. A stirrer 10 driven by a stirring motor is provided inside the mixing tank 3. A refrigerator 5 is connected to the cold liquid temporary storage tank 4. A low-level liquid outlet pipe 12 is connected between the cold liquid temporary storage tank 4 and the cold liquid variable frequency pump 13. The cold liquid temporary storage tank 4 is connected to the low-level liquid outlet pipe 12 through a high-level liquid outlet pipe 11. The connection point of the low-level liquid outlet pipe 12 and the cold liquid temporary storage tank 4 is located at the bottom of the cold liquid temporary storage tank 4. The connection point of the high-level liquid outlet pipe 11 and the cold liquid temporary storage tank 4 is located at 2 / 3 of the vertical wall of the cold liquid temporary storage tank 4. The cold liquid variable frequency pump 13 is connected to the inlet of the temperature-controlled coil 22 through an inlet temperature-controlled coil pipe 21. The outlet of the temperature-controlled coil 22 is connected to the refrigerator 5 through a pipe. The cold liquid variable frequency pump 13 is connected to the spray disc 15 through an inlet spray disc pipe 14. The mixing tank 3 is connected to the normal temperature storage tank 1 through a return pump 18. A return pipe 19 is provided between the return pump 18 and the normal temperature storage tank 1. A connection pipe 20 is connected to the return pipe 19.
[0024] When the above-mentioned safety storage device for dialkyl tertiary amine works, it includes the following steps:
[0025] (1) The dialkyl tertiary amine is stored in the normal temperature storage tank 1 and the temperature-controlled storage tank 2. The low-temperature liquid phase prepared by the refrigerator 5 enters the cold liquid temporary storage tank 4, and then is pumped into the temperature-controlled coil 22 through the high-level liquid outlet pipe 11 by the cold liquid variable frequency pump 13 to control the temperature of the dialkyl tertiary amine in the temperature-controlled storage tank 2; (2) When the temperature of the normal temperature storage tank 1 rises, the temperature-controlled storage tank pump 16 and the normal temperature storage tank pump 17 are turned on to mix and cool the dialkyl tertiary amine in the normal temperature storage tank 1 and the temperature-controlled storage tank 2, and then it is pumped into the normal temperature storage tank 1 through the return pump 18. At the same time, the liquid outlet pipe of the cold liquid temporary storage tank 4 is changed to the low-level liquid outlet pipe 12, and the outer wall of the normal temperature storage tank 1 is cooled through the spray disc 15.
Claims
1. A dialkyl tertiary amine safe storage device, characterized in that: The invention comprises a normal temperature storage tank (1), a temperature control storage tank (2), and a cold liquid temporary storage tank (4). The normal temperature storage tank (1) is provided with a pressure observation U-shaped tube (7). The normal temperature storage tank (1) is connected to a mixing tank (3) via a normal temperature storage tank outlet pump (17). A temperature control coil (22) is provided inside the temperature control storage tank (2). The temperature control storage tank (2) is connected to the mixing tank (3) via a temperature control storage tank outlet pump (16). The cold liquid temporary storage tank (4) is connected to the temperature control coil (22) via a cold liquid variable frequency pump (13).
2. The dialkyl tertiary amine safety storage device according to claim 1, characterized in that: The normal temperature storage tank (1) is provided with a safety valve (6), a liquid phase is provided inside the pressure observation U-shaped tube (7), a gas detector (8) is provided at the outlet of the pressure observation U-shaped tube (7), and a liquid level meter (9) is provided outside the pressure observation U-shaped tube (7).
3. The dialkyl tertiary amine safety storage device according to claim 1, characterized in that: A spray plate (15) is provided above the normal temperature storage tank (1), and a stirrer (10) driven by a stirring motor is provided inside the mixing tank (3).
4. The dialkyl tertiary amine safe storage device according to claim 1, characterized in that: The cold liquid temporary storage tank (4) is connected to a refrigerator (5), a low-position liquid outlet pipeline (12) is connected between the cold liquid temporary storage tank (4) and the cold liquid variable frequency pump (13), and the cold liquid temporary storage tank (4) is connected to the low-position liquid outlet pipeline (12) via a high-position liquid outlet pipeline (11).
5. The dialkyl tertiary amine safety storage device according to claim 4, characterized in that: The connection point between the low-position liquid outlet pipe (12) and the cold liquid temporary storage tank (4) is located at the bottom of the cold liquid temporary storage tank (4), and the connection point between the high-position liquid outlet pipe (11) and the cold liquid temporary storage tank (4) is located at 1 / 2-2 / 3 of the vertical wall of the cold liquid temporary storage tank (4).
6. The dialkyl tertiary amine safety storage device according to claim 4, characterized in that: The cooling liquid variable frequency pump (13) is connected to the inlet of the temperature control coil (22) through the temperature control coil inlet pipeline (21), and the outlet of the temperature control coil (22) is connected to the refrigerator (5) through a pipeline.
7. The dialkyl tertiary amine safety storage device according to claim 3, characterized in that: The cooling liquid variable frequency pump (13) is connected to the spray plate (15) through the spray plate inlet pipeline (14).
8. The dialkyl tertiary amine safety storage device according to claim 1, characterized in that: The mixing tank (3) is connected to the normal temperature storage tank (1) via a return pump (18). A return pipe (19) is provided between the return pump (18) and the normal temperature storage tank (1), and a connecting pipe (20) is connected to the return pipe (19).