Improved cost-reducing and energy-saving regeneration heating drying system
By using a regeneration interrupt valve and a regeneration heating box to control two molecular sieve towers in the drying system, the problem of heat waste in the regeneration heating box is solved, and the system is energy-saving and cost-saving is achieved.
Patent Information
- Application Number
- CN202422509909.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-17
AI Technical Summary
In the existing drying system, each time the molecular sieve tower is regenerated and switched, the unregenerated regeneration heating box is still in a high temperature state, resulting in waste of energy. Two regeneration heating boxes are required to control the two molecular sieve towers respectively, increasing production costs.
Regeneration interrupt valve is used instead of regeneration reversing valve, and two molecular sieve towers are controlled through a regeneration heating box. The heat reserved in the regeneration heating box is used to achieve flexible switching of the heating box and heat reuse.
Reduces energy waste, reduces production costs, and improves the energy-saving efficiency of the system.
Smart Images
Figure CN223249073U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drying systems, in particular to an improved cost-reducing and energy-saving regenerative heating drying system. Background Art
[0002] A common drying system contains two molecular sieve towers, one molecular sieve tower dries and absorbs moisture, and the other is responsible for regeneration to remove the moisture absorbed by the molecular sieve. In the commonly used dual molecular sieve tower system, each molecular sieve tower is connected to a regeneration heating box. When one molecular sieve tower is regenerated, the corresponding regeneration heating box starts to electrically heat it. After regeneration is completed, the regeneration heating box stops working, and the other regeneration heating box starts electrically heating again to complete the regeneration function of the other molecular sieve tower. However, at this time, the regeneration heating box connected to the first molecular sieve tower is still in a high-temperature state. This high-temperature state does not play a processing role. Each regeneration switch between the left and right towers will result in energy waste. Summary of the Invention
[0003] In order to overcome the deficiencies of the prior art, the utility model provides an improved cost-reducing and energy-saving regeneration heating and drying system. The regeneration heating box can be easily switched between the two molecular sieve towers by simply controlling the switch of the regeneration interruption valve. At the same time, a large amount of heat reserved by the last electric heating of the regeneration heating box can be used in the regeneration process of the next regeneration heating box.
[0004] To achieve the above-mentioned objectives, an improved cost-reducing and energy-saving regenerative heating and drying system is designed, comprising a regeneration distribution valve, a molecular sieve tower, a regeneration heating box, and a drying fan. An air inlet duct is provided on one side of the regeneration distribution valve, and a regeneration filter is provided between the regeneration distribution valve and the air inlet duct. The other side of the regeneration distribution valve is connected to one end of the regeneration fan, and the other end of the regeneration fan is connected to one end of the regeneration heating box. The other end of the regeneration heating box is divided into two paths and respectively connected to one end of the right regeneration interruption valve 1 and the left regeneration interruption valve 1. The other ends of the right regeneration interruption valve 1 and the left regeneration interruption valve 1 are respectively connected to one end of the left molecular sieve tower and the right molecular sieve tower. The other ends of the left molecular sieve tower and the right molecular sieve tower are respectively connected to one end of the right regeneration interruption valve 2 and the left regeneration interruption valve 2. The other ends of the right regeneration interruption valve 2 and the left regeneration interruption valve 2 are connected to one end of the dew point regulating valve through a circulation pipe. The other ends of the dew point regulating valves are respectively connected to one end of two drying fans, and the other ends of the two drying fans are connected to the drying air outlet duct.
[0005] A second drying distribution valve is provided between the left molecular sieve tower, the right molecular sieve tower and the dew point regulating valve, and the second drying distribution valve is a three-way valve.
[0006] A drying distribution valve 1 is provided between the left molecular sieve tower, the right molecular sieve tower and the drying blower, and the drying distribution valve 1 is a three-way valve.
[0007] The regeneration distribution valve is provided with a first regeneration chamber and a second regeneration chamber.
[0008] The circulation duct is connected to the second regeneration chamber, and the air inlet duct is connected to the first regeneration chamber.
[0009] Compared with the prior art, the utility model is simplified to one regeneration heating box controlling two molecular sieve towers, in that each molecular sieve tower is provided with a regeneration heating box. At the same time, the regeneration reversing valve in the original technology is replaced by a regeneration interruption valve, which can be directly installed on the pipeline. The regeneration interruption valve is also easy to process, and the heat reserved by the heating box is reasonably utilized, thereby reducing the waste of processing energy and saving customers' production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is the regeneration gas path diagram of the left molecular sieve tower in the drying system.
[0011] Figure 2 This is the regeneration gas path diagram of the right molecular sieve tower in the drying system.
[0012] See also Figures 1 to 2 , 1 is the regeneration filter, 2 is the regeneration distribution valve, 3 is the regeneration fan, 4 is the regeneration heating box, 5 is the right regeneration interrupt valve one, 6 is the left regeneration interrupt valve one, 7 is the drying distribution valve one, 8 is the left molecular sieve tower, 9 is the right molecular sieve tower, 10 is the drying distribution valve two, 11 is the right regeneration interrupt valve two, 12 is the left regeneration interrupt valve two, 13 is the dew point regulating valve, 14 is the drying fan, 15 is the air inlet duct, 16 is the circulation duct, 17 is the drying air outlet duct, 18 is the regeneration chamber one, and 19 is the regeneration chamber two. DETAILED DESCRIPTION
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] like Figure 1 or Figure 2As shown, an air inlet duct 15 is provided on one side of the regeneration distribution valve 2, and a regeneration filter 1 is provided between the regeneration distribution valve 2 and the air inlet duct 15. The regeneration filter 1 is responsible for preliminarily filtering the outside air introduced. The other side of the regeneration distribution valve 2 is connected to one end of the regeneration fan 3. The regeneration distribution valve 2 controls the gas flow, pressure and direction. The regeneration distribution valve 2 can adjust the flow rate within a given time. The other end of the regeneration fan 3 is connected to one end of the regeneration heating box 4. The regeneration heating box 4 is arranged on the main gas path, so that the regeneration heating box 4 can realize the control of two molecular sieve towers by switching. The other end of the regeneration heating box 4 is divided into two paths and respectively connected to one end of the right regeneration interruption valve 5 and the left regeneration interruption valve 6. The right regeneration interruption valve 5 and the left regeneration interruption valve 6 act as air inlet valves. The other ends of the right regeneration interruption valve 5 and the left regeneration interruption valve 6 are respectively connected to the left molecular sieve tower 8 and the right molecular sieve tower 9, the other ends of the left molecular sieve tower 8 and the right molecular sieve tower 9 are respectively connected to the right regeneration interrupt valve 2 11 and the left regeneration interrupt valve 2 12. One of the two molecular sieve towers removes the water absorbed before, and the other is responsible for removing moisture in the gas. The right regeneration interrupt valve 2 11 and the left regeneration interrupt valve 12 act as outlet valves. The other ends of the right regeneration interrupt valve 2 11 and the left regeneration interrupt valve 2 12 are connected to one end of the dew point regulating valve 13 through the circulation pipe 16. The other ends of the dew point regulating valve 13 are respectively connected to one end of two drying fans 14. The dew point regulating valve 13 can directly measure the temperature at which the moisture in the gas changes from unsaturated water vapor to saturated water vapor. The high and low dew points indicate the high and low moisture content in the gas, so as to monitor the dryness of the gas. The other ends of the two drying fans 14 are connected to the dry air outlet pipe 17. The drying fan 14 increases the pressure and wind speed of the dry gas.
[0015] A drying distribution valve 2 10 is provided between the left molecular sieve tower 8, the right molecular sieve tower 9 and the dew point regulating valve 13, and a drying distribution valve 1 7 is provided between the left molecular sieve tower 8, the right molecular sieve tower 9 and the drying fan 14. The drying distribution valve 1 7 is a three-way valve, and the drying distribution valve 2 10 is a three-way valve. The drying distribution valve can realize the conversion of the direction of the gas path by reversing, so that the two molecular sieve towers can alternately switch between the drying and regeneration states.
[0016] The regeneration distribution valve 2 is provided with a regeneration chamber 18 and a regeneration chamber 2 19 .
[0017] The circulation duct 16 is connected to the second regeneration chamber 19 , and the air inlet duct 15 is connected to the first regeneration chamber 18 .
[0018] The operation process of the utility model is as follows: Figure 1, first, the gas is treated in a manner of regenerating the left molecular sieve tower 8 and drying the right molecular sieve tower 9. At this time, the right pipeline of the drying distribution valve 10 and the drying distribution valve 2 7 is opened and the left pipeline is closed. The outside air is introduced from the air inlet pipeline 15, and is preliminarily filtered through the regeneration filter 1. The gas flow direction and pressure are controlled by the regeneration distribution valve 2 and the regeneration fan 3. Then, the molecular sieve is heated by the regeneration heating box 4 to remove the adsorbed water and other substances. The right regeneration interruption valve 1 and the right regeneration interruption valve 2 11 are closed, and the left regeneration interruption valve 1 and the left regeneration interruption valve 2 12 are opened. The hot gas first enters the left molecular sieve tower 8, and the left molecular sieve tower 8 is heated and regenerated. Then, it enters the regeneration chamber 2 19 through the opened left regeneration interruption valve 2 12 and is discharged to the outside through the circulation pipeline 16. At the same time, gas is introduced into the right molecular sieve tower 9, and the gas is dried through the right molecular sieve tower 9. The gas passes through the drying fan 14 and is discharged into the hopper; Figure 2 As shown, when it is necessary to switch to regenerate the right molecular sieve tower 9 and dry the left molecular sieve tower 8, open the right regeneration interrupt valve 15 and the right regeneration interrupt valve 2 11, close the left regeneration interrupt valve 16 and the left regeneration interrupt valve 2 12, open the left pipeline of the drying distribution valve 10 and the drying distribution valve 2 7, and close the right pipeline. The newly incoming gas is filtered through the regeneration filter 1, and the heat reserved in the regeneration heating box 4 quickly heats the newly incoming gas. The heated gas enters the right molecular sieve tower 9 through the right regeneration interrupt valve 15 to regenerate the right molecular sieve tower 9. Then the gas passes through the right regeneration interrupt valve 2 11 into the regeneration chamber 2 19 and is discharged to the outside through the circulation pipe 16. At the same time, the circulation pipe 16 on the other side enters the gas, and the gas passes through the left molecular sieve tower 8 for gas drying. Finally, the gas passes through the drying fan 14 and is discharged into the hopper. If switching is required, repeat the process of regenerating the left molecular sieve tower 8 and drying the right molecular sieve tower 9. The drying system is also provided with a dew point regulating valve 13 to detect the water content in the gas in real time. The whole process reduces energy waste and saves customers' production costs.
Claims
1. An improved cost-saving and energy-saving regenerative heating and drying system, comprising a regenerative distribution valve, a molecular sieve tower, a regenerative heating box, and a drying fan, characterized in that: The regeneration distribution valve (2) is provided with an air inlet duct (15) on one side, and a regeneration filter (1) is provided between the regeneration distribution valve (2) and the air inlet duct (15). The other side of the regeneration distribution valve (2) is connected to one end of the regeneration fan (3), and the other end of the regeneration fan (3) is connected to one end of the regeneration heating box (4). The other end of the regeneration heating box (4) is divided into two paths and connected to one end of the right regeneration interruption valve (5) and the left regeneration interruption valve (6). The other ends of the right regeneration interruption valve (5) and the left regeneration interruption valve (6) are respectively connected to the left molecular One end of the sieve tower (8) and the right molecular sieve tower (9), and the other ends of the left molecular sieve tower (8) and the right molecular sieve tower (9) are connected to one end of the right regeneration interruption valve 2 (11) and one end of the left regeneration interruption valve 2 (12), respectively. The other ends of the right regeneration interruption valve 2 (11) and the left regeneration interruption valve 2 (12) are connected to one end of the dew point regulating valve (13) through the circulation pipe (16). The other end of the dew point regulating valve (13) is connected to one end of two drying fans (14), respectively. The other ends of the two drying fans (14) are connected to the drying air outlet pipe (17).
2. The improved cost-reducing and energy-saving regenerative heating and drying system according to claim 1 is characterized in that: A second drying distribution valve (10) is provided between the left molecular sieve tower (8), the right molecular sieve tower (9) and the dew point regulating valve (13), and the second drying distribution valve (10) is a three-way valve.
3. The improved cost-reducing and energy-saving regenerative heating and drying system according to claim 1 is characterized in that: A drying distribution valve (7) is provided between the left molecular sieve tower (8), the right molecular sieve tower (9) and the drying blower (14), and the drying distribution valve (7) is a three-way valve.
4. The improved cost-reducing and energy-saving regenerative heating and drying system according to claim 1 is characterized in that: The regeneration distribution valve (2) is provided with a regeneration chamber 1 (18) and a regeneration chamber 2 (19).
5. The improved cost-reducing and energy-saving regenerative heating and drying system according to claim 1 is characterized in that: The circulation duct (16) is connected to the second regeneration chamber (19), and the air inlet duct (15) is connected to the first regeneration chamber (18).