Rectifying tower top vapor phase material heat recovery device
By designing a heat recovery device in the distillation tower and using a plate heat exchanger to exchange heat with desalted water, the problem of unused heat of vapor phase materials is solved, and the heat recovery and energy-saving effect is achieved.
Patent Information
- Application Number
- CN202421229852.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the distillation column, the heat released by the vapor phase material during the condensation process is not fully utilized, resulting in waste of heat, while circulating condensate requires more energy input to continue circulation.
A heat recovery device for steam phase material on the top of the distillation tower is designed, and heat exchange is used with a plate heat exchanger with desalted water to recover and utilize the heat in the hot end, while reducing the use of circulating water.
The heat of vapor phase materials is effectively recovered, the use of circulating water is reduced, energy consumption is saved, and the heat utilization of the distillation tower is optimized.
Smart Images
Figure CN222460330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of distillation towers, in particular to a device for recovering heat from vapor-phase materials at the top of a distillation tower. Background Art
[0002] The vapor-phase material at the top of the distillation tower is cooled by a circulating water condenser, and the vapor-phase material is cooled down to liquid. The heat released when the material changes from vapor phase to liquid phase is not fully utilized, resulting in a large amount of heat waste. Moreover, because the circulating condensed water needs to exchange a large amount of heat, the circulating condensed water requires more energy input in utilization and cooling before it can continue to circulate into the system. In order to solve the above problems, a heat recovery device for vapor-phase material at the top of the distillation tower is designed. Utility Model Content
[0003] The purpose of the utility model is to provide a heat recovery device for vapor phase materials at the top of a distillation tower to solve the above technical problems. To achieve the above purpose, the utility model adopts the following technical solutions:
[0004] A heat recovery device for vapor-phase material at the top of a distillation tower comprises a circulating water condenser, a vapor-phase material conveying pipeline at the top of the tower, a circulating water pipeline, a heat recovery device, a liquid-phase material discharge pipe, and a liquid-phase material storage tank. The vapor-phase material conveying pipeline at the top of the tower is connected to the top side of the circulating water condenser, the liquid-phase material storage tank is connected to the bottom side of the circulating water condenser through the liquid-phase material discharge pipe, the circulating water pipeline is connected to one side of the circulating water condenser, and the heat recovery device is connected to the vapor-phase material conveying pipeline at the top of the tower.
[0005] On the basis of the above technical scheme, the heat recovery device is composed of a plate heat exchanger, a desalted water circulation pipeline, a desalted water tank, a circulation pump, and a heat-using end. The desalted water tank is connected to one side of the plate heat exchanger through the desalted water circulation pipeline, the circulation pump and the heat-using end are connected in series through the desalted water circulation pipeline, the other end of the desalted water circulation pipeline is connected to one side of the plate heat exchanger, the top vapor-phase material conveying pipeline is composed of a vapor-phase material access pipe and a vapor-phase material outlet pipe, the vapor-phase material access pipe is connected to the top side of the plate heat exchanger, the vapor-phase material outlet pipe is connected to the bottom side of the plate heat exchanger, and the bottom end of the vapor-phase material outlet pipe is connected to the circulating water condenser.
[0006] Compared with the prior art, the utility model has the following advantages: the utility model optimizes the setting of heat recovery of vapor-phase materials at the top of the distillation tower, changes the traditional design of direct connection to the water condenser, and sets a heat recovery device to absorb heat while reducing the use of circulating water. The recovered heat can be directly applied to the heat-using end, saving energy consumption, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1This is a diagram of the overall appearance of the utility model.
[0008] Figure 2 This is a schematic diagram of a heat recovery device of the utility model.
[0009] In the figure: circulating water condenser 1, tower top vapor-phase material conveying pipeline 2, circulating water pipeline 3, heat recovery device 4, liquid-phase material discharge pipe 5, liquid-phase material storage tank 6, plate heat exchanger 7, desalted water circulation pipeline 8, desalted water tank 9, circulating pump 10, hot end 11, vapor-phase material inlet pipe 12, vapor-phase material outlet pipe 13. DETAILED DESCRIPTION
[0010] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementations.
[0011] A heat recovery device for vapor-phase material at the top of a distillation tower comprises a circulating water condenser 1, a vapor-phase material conveying pipeline 2 at the top of the tower, a circulating water pipeline 3, a heat recovery device 4, a liquid-phase material discharge pipe 5, and a liquid-phase material storage tank 6. The vapor-phase material conveying pipeline 2 at the top of the tower is connected to the top side of the circulating water condenser 1, the liquid-phase material storage tank 6 is connected to the bottom side of the circulating water condenser 1 through the liquid-phase material discharge pipe 5, the circulating water pipeline 3 is connected to one side of the circulating water condenser 1, and the heat recovery device 4 is connected to the vapor-phase material conveying pipeline 2 at the top of the tower.
[0012] The heat recovery device 4 is composed of a plate heat exchanger 7, a desalted water circulation pipeline 8, a desalted water tank 9, a circulation pump 10, and a heat-using end 11. The desalted water tank 9 is connected to one side of the plate heat exchanger 7 through the desalted water circulation pipeline 8, the circulation pump 10 and the heat-using end 11 are connected in series through the desalted water circulation pipeline 8, and the other end of the desalted water circulation pipeline 8 is connected to one side of the plate heat exchanger 7. The top vapor-phase material conveying pipeline 2 is composed of a vapor-phase material inlet pipe 12 and a vapor-phase material outlet pipe 13. The vapor-phase material inlet pipe 12 is connected to the top side of the plate heat exchanger 7, the vapor-phase material outlet pipe 13 is connected to the bottom side of the plate heat exchanger 7, and the bottom end of the vapor-phase material outlet pipe 13 is connected to the circulating water condenser 1.
[0013] Working principle of the utility model: The operating principle of the device is simple. When the traditional tower top vapor-phase material undergoes phase change, the vapor-phase material needs to be input into the circulating water condenser 1 through the tower top vapor-phase material conveying pipeline 2. At this time, the circulating water pipeline 3 is used to circulate hot water, so that the vapor-phase material is converted into a liquid-phase material in the circulating water condenser 1, and finally stored in the liquid-phase material storage tank 6. A large amount of circulating water is required in this process, and even the heat dissipation device connected to the circulating water requires a larger energy input. When the heat recovery device 4 is connected to the tower top vapor-phase material conveying pipeline 2, the vapor-phase material in the tower top vapor-phase material conveying pipeline 2 can exchange heat with the desalted water inside the plate heat exchanger 7, and transfer part of the heat to the desalted water, and circulate heat exchange through the circulating pump 10, so as to be utilized in the heat-using end 11. This process absorbs part of the heat for utilization, and can also reduce the water flow in the circulating water pipeline 3, saving energy.
[0014] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.
Claims
1. A device for recovering heat from vapor phase materials at the top of a distillation tower, characterized in that: The invention comprises a circulating water condenser (1), a tower top vapor-phase material conveying pipeline (2), a circulating water pipeline (3), a heat recovery device (4), a liquid-phase material discharge pipe (5), and a liquid-phase material storage tank (6), wherein the tower top vapor-phase material conveying pipeline (2) is connected to the top side of the circulating water condenser (1), the liquid-phase material storage tank (6) is connected to the bottom side of the circulating water condenser (1) through the liquid-phase material discharge pipe (5), the circulating water pipeline (3) is connected to one side of the circulating water condenser (1), and the heat recovery device (4) is connected to the tower top vapor-phase material conveying pipeline (2).
2. A heat recovery device for vapor phase materials at the top of a distillation tower according to claim 1, characterized in that: The heat recovery device (4) is composed of a plate heat exchanger (7), a desalted water circulation pipeline (8), a desalted water tank (9), a circulation pump (10), and a heat-using end (11); the desalted water tank (9) is connected to one side of the plate heat exchanger (7) through the desalted water circulation pipeline (8); the circulation pump (10) and the heat-using end (11) are connected in series through the desalted water circulation pipeline (8); the other end of the desalted water circulation pipeline (8) is connected to one side of the plate heat exchanger (7); the tower top vapor-phase material conveying pipeline (2) is composed of a vapor-phase material inlet pipe (12) and a vapor-phase material outlet pipe (13); the vapor-phase material inlet pipe (12) is connected to the top side of the plate heat exchanger (7); the vapor-phase material outlet pipe (13) is connected to the bottom side of the plate heat exchanger (7); and the bottom end of the vapor-phase material outlet pipe (13) is connected to a circulating water condenser (1).