A low dew point energy-saving low gas consumption compression heat adsorption dryer

Abstract

The present invention discloses a low-dew-point energy-saving low-gas-consumption compression heat adsorption dryer, comprising: a main air intake pipe, a heater and a cooler connected to the air intake pipe, and a proportional regulating valve arranged on the main air intake pipe, through which the proportion of airflow entering the heater and the cooler is regulated; the present invention alternately uses adsorption tower A and adsorption tower B, and a plurality of adsorbent disks are arranged inside the adsorption tower, and the adsorbent disks are designed to have an upward arc-shaped protrusion in the middle and upper and lower arc-shaped bends on both sides to form different adsorption areas. Ordinary low-gas-consumption full-flow heating adsorption dryers use full-flow heating in the regeneration stage, which leads to a significant increase in heater power, large energy loss, and difficulty in maintaining a low dew point continuously. The present invention, by heating part of the airflow and optimizing the airflow distribution, can more easily reach a low dew point at the same dew point, and can maintain a low dew point continuously.

Description

Technical Field

[0001] The invention discloses a low-dew point energy-saving low-gas-consumption compression heat absorption dryer, belonging to the technical field of compression heat absorption dryers. Background Art

[0002] Compression heat desiccant is a device used to reduce the moisture content in compressed air to achieve the lowest dew point requirement. It uses compression heat (i.e. the heat generated during the compression process) to regenerate the desiccant, thereby significantly reducing the amount of compressed air consumed during the regeneration process and achieving energy-saving and efficient air drying effects.

[0003] The basic principle of the dryer operation includes two main parts: adsorption drying part and regeneration heating part. The specific working process is as follows:

[0004] Adsorption drying: When compressed air passes through a drying tower filled with desiccant (such as molecular sieve, activated alumina, etc.), the desiccant will absorb moisture in the air, so that the output compressed air has a very low relative humidity, that is, a lower dew point temperature, meeting the user's requirements for air quality.

[0005] Regeneration heating: An important feature of the compression heat desiccant is that it uses part of the compression heat to heat the desiccant during the regeneration process, accelerating the desorption of moisture from the desiccant. This allows the desiccant to be regenerated without using a large amount of compressed air as a regeneration purge air source, greatly reducing energy and gas consumption. For this purpose, the equipment is usually equipped with a heat exchanger that can effectively collect and utilize part of the heat generated during the compression process.

[0006] In the field of compressed air drying, low dew point and energy saving are often two relatively opposing goals. The traditional full-flow heating type low-gas consumption compression heat adsorption dryer is a typical example. Although they can meet the lower dew point requirements, the power consumption on the heater is large, resulting in low energy efficiency. The disadvantage of this full-flow regeneration method is that due to the low intake air temperature, the regeneration effect is not ideal, and it is difficult to achieve more stringent low dew point standards. In order to achieve a lower dew point, the equipment usually needs to increase the intake air regeneration temperature, which means greater installed power and higher energy consumption.

[0007] In addition, during the full-flow regeneration process, all airflow needs to pass through the heater, which not only increases the burden on the heater, but also causes a large pressure drop in the whole machine, further affecting energy efficiency. In contrast, although ordinary low-gas consumption compression heat dryers can partially utilize compression heat during the regeneration stage, it is difficult to maintain a low dew point under full-flow heating, especially when the intake air temperature is low, the regeneration effect is worse.

[0008] During the regeneration process of traditional dryers, the consumption of finished gas is also relatively large, which is not only a waste of energy but also increases operating costs.

[0009] Therefore, the purpose of this study is to design a low dew point energy-saving low gas consumption compression heat desiccant dryer that can improve energy efficiency and reduce energy waste while ensuring a low dew point. Summary of the invention

[0010] In view of the deficiencies in the prior art, the object of the present invention is to provide a low dew point energy-saving low gas consumption compression heat adsorption dryer to solve the problems of the prior art.

[0011] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0012] A low dew point energy-saving low air consumption compression heat absorption dryer, comprising: a main air intake pipe, a heater and a cooler connected to the main air intake pipe, and a proportional regulating valve arranged on the main air intake pipe, through which the proportion of airflow entering the heater and the cooler is regulated;

[0013] An adsorption tower A and an adsorption tower B are installed above the base, and the pipe openings below the adsorption tower A and the adsorption tower B are connected to the cooler through a thermal regeneration outlet pipe. A tower A regeneration outlet valve is provided below the adsorption tower A, and a tower B regeneration outlet valve is provided below the adsorption tower B. The connection state between the cooler and the adsorption tower A and the adsorption tower B is adjusted by controlling the opening / closing state of the regeneration outlet valve of the tower A and the regeneration outlet valve of the tower B;

[0014] A gas-liquid separator whose input port is connected to the output port of the cooler, and whose output port is connected to the heat regeneration gas outlet pipe;

[0015] The pipe openings above the A adsorption tower and the B adsorption tower are connected to the heater through an exhaust pipe, a tower A regeneration cooling valve is provided between the A adsorption tower and the heater, and a tower B regeneration cooling valve is provided between the B adsorption tower and the heater, and the connection state of the A adsorption tower, the B adsorption tower and the heater is adjusted by controlling the opening / closing state of the A tower regeneration cooling valve and the B tower regeneration cooling valve;

[0016] A main output pipe, the main output pipe is connected with the A adsorption tower and the B adsorption tower, an A tower exhaust valve is provided between the A adsorption tower and the main output pipe, and a B tower exhaust valve is provided between the B adsorption tower and the main output pipe, and the connection state of the A adsorption tower, the B adsorption tower and the main output pipe is adjusted by controlling the opening / closing state of the A tower exhaust valve and the B tower exhaust valve;

[0017] A cooling pipe is connected to the upper ports of the A adsorption tower and the B adsorption tower. A regeneration cooling valve of tower A is arranged on the side of the cooling pipe close to the A adsorption tower. A regeneration cooling valve of tower B is arranged on the side of the cooling pipe close to the B adsorption tower. By switching the open / closed state of the regeneration cooling valve of tower A or the regeneration cooling valve of tower B, the regeneration cooling airflow is controlled to be input into the A adsorption tower / B adsorption tower;

[0018] A control module, wherein the control module is electrically connected to an external power supply device, a heater, a cooler, a proportional regulating valve, a regeneration outlet valve of tower A, a regeneration outlet valve of tower B, a gas-liquid separator, a regeneration cooling valve of tower A, a regeneration cooling valve of tower B, an exhaust valve of tower A, an exhaust valve of tower B, a regeneration cooling valve of tower A, and a regeneration cooling valve of tower B.

[0019] As a further improvement, it also includes a liquid storage tank, which is connected to the gas-liquid separator and receives and stores the liquid separated by the gas-liquid separator.

[0020] As a further improvement, it also includes multiple groups of adsorbent discs longitudinally arranged inside the A adsorption tower, and the distance between two adjacent adsorbent discs is in the range of 13mm-28mm.

[0021] As a further improvement, the middle part of the adsorbent disk is arc-shaped and convex upward to form a first adsorption part, the edges on both sides of the adsorbent disk are arc-shaped and bent upward to form a second adsorption part, and the edges on both sides of the adsorbent disk are arc-shaped and bent downward to form a third adsorption part, and the second adsorption part and the third adsorption part are arranged alternately.

[0022] As a further improvement, the adsorbent disk includes an upper disk body and a lower disk body, the upper disk body is fixedly connected to the edge of the lower disk body, an interlayer is arranged between the upper disk body and the lower disk body, and adsorption particles are filled in the interlayer, and fine air holes are arranged on the upper disk body and the lower disk body, and the aperture of the air holes is smaller than the aperture of the adsorption particles.

[0023] As a further improvement, the upper disk body and the lower disk body are provided with a plurality of arc-shaped concave structures downwardly, the inner concave depth of the upper disk body is smaller than that of the lower disk body, and the arc-shaped concave structures of the upper disk body and the lower disk body cooperate to form a accommodating space, and the adsorption particles are filled in the accommodating space.

[0024] As a further improvement, the heater also includes an electric heating tube, a heating wire wrapped around the outer ring of the electric heating tube, a shell mounted on the outside of the electric heating tube and the heating wire, and a conductive module connected to the heating wire, and the conductive module is electrically connected to the control module.

[0025] As a further improvement, a plurality of groups of heating plates are arranged around the axis on the inner side of the electric heating tube, and the heating plates are inclined toward the air inlet end.

[0026] As a further improvement, the width of the heating plate gradually decreases from the connection with the electric heating tube toward the end.

[0027] Beneficial effects:

[0028] The present invention uses adsorption tower A and adsorption tower B alternately, and multiple adsorbent discs are arranged inside the adsorption towers. The adsorbent discs are designed with an upward arc-shaped protrusion in the middle and arc-shaped bends on both sides to form different adsorption areas.

[0029] The compressed air enters the proportional control valve through the main intake pipe, and the proportional control valve adjusts the air flow ratio entering the heater and cooler according to the intake air temperature and flow.

[0030] The heated airflow and the cooled airflow enter the adsorption tower (assuming it is adsorption tower A), and the dry air after adsorption treatment enters the main output pipe through the exhaust valve of tower A and is output after further treatment.

[0031] The proportional control valve adjusts the airflow ratio so that a smaller proportion of the airflow enters the heater. The heated gas enters the regeneration tower (assuming it is adsorption tower B) through the thermal regeneration outlet pipe, heating the adsorbent in the tower to desorb moisture.

[0032] After regeneration is completed, cold air is blown into the regeneration tower (assuming it is adsorption tower B) through the cooling pipe to lower the temperature of the adsorbent and restore the adsorption capacity.

[0033] When adsorption tower A reaches saturation, the roles of tower A and tower B are switched by switching the valve.

[0034] The spacing design of the adsorbent disc ensures uniform airflow distribution, increases the contact time between the airflow and the adsorbent, and improves the adsorption effect. It also allows the airflow to continuously switch between multiple paths to reduce local adsorption saturation.

[0035] The design of proportional control valve and adsorbent plate can reduce the resistance of airflow through heater and cooler, and reduce the pressure drop of the whole machine. Only part of the airflow is heated during the regeneration process, which reduces the burden on the heater and reduces power consumption. The dynamic control of proportional control valve and temperature sensor can reduce unnecessary energy consumption. The regeneration and cooling processes are separated to reduce the consumption of finished gas.

[0036] Ordinary low-gas consumption full-flow heating dehumidifiers use full-flow heating during the regeneration phase, which results in a significant increase in heater power, large energy loss, and difficulty in maintaining a low dew point. However, the present invention can achieve a low dew point more easily at the same dew point through partial airflow heating and optimized airflow distribution, and can maintain a low dew point continuously.

[0037] The existing full-flow heating desiccant requires a larger heater power to achieve the same temperature rise, resulting in a large installed power. The present invention controls part of the airflow heating through a proportional regulating valve, and when the same temperature rise is achieved, the actual heating power is lower and the installed power is also lower.

[0038] In the existing design, due to full flow heating, the resistance of airflow passing through the heater is large, resulting in an increase in the pressure drop of the whole machine. The present invention reduces the resistance of airflow passing through the heater and cooler and reduces the pressure drop of the whole machine by optimizing airflow distribution and valve control.

[0039] The existing design of full flow heating leads to high energy consumption and high operating costs. The partial air flow heating and optimized air flow path of the present invention reduce energy consumption and low operating costs.

[0040] The existing design mixes the regeneration and cooling processes, which affects the regeneration effect and cooling efficiency. The present invention separates the regeneration and cooling processes, uses special heating airflow and cold airflow, improves the regeneration efficiency and cooling effect, and prolongs the service life of the adsorbent.

[0041] The existing design has a large noise in the cooling process, which affects the use environment of the equipment. The present invention reduces the noise in the cooling process through a muffler, providing a quieter use environment.

[0042] The above design can significantly improve the performance and efficiency of the equipment, while reducing operating costs and extending the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention.

[0045] Figure 2 It is a schematic structural diagram of the present invention from a side view at a second viewing angle.

[0046] Figure 3 It is a structural schematic diagram of the third viewing angle of the present invention.

[0047] Figure 4 yes Figure 3 The internal structure diagram is enlarged at point A in the middle.

[0048] Figure 5 It is a schematic diagram of the cross-sectional structure of a heater of the present invention.

[0049] Figure 6 It is a structural schematic diagram of the fourth viewing angle of the present invention.

[0050] Figure 7 The present invention is a schematic diagram of the location of the regeneration outlet valve of Tower A.

[0051] Figure 8 It is a schematic diagram of the internal structure of a partial cross-section of an adsorption tower of the present invention.

[0052] Fig. 9 It is a schematic diagram of the explosion structure of an adsorbent disk of the present invention.

[0053] Fig.10 It is a schematic diagram of the three-dimensional structure and the partially enlarged cross-sectional structure of an adsorbent disk of the present invention.

[0054] Fig.11 It is a schematic diagram of the connection of some modules of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0055] Fig.12 The invention discloses a valve control schematic diagram of a low dew point energy-saving low gas consumption compression heat absorption dryer in a shutdown state.

[0056] Fig.13 The present invention is a schematic diagram of valve control for the A tower adsorption and B tower regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0057] Fig.14 It is a valve control schematic diagram of the A tower adsorption and the B tower first-stage full-flow heating regeneration of a low dew point energy-saving low-gas-consumption compression heat adsorption dryer of the present invention.

[0058] Fig.15 It is a valve control schematic diagram of the A tower adsorption and the B tower second stage partial flow heating regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0059] Fig.16 The present invention is a schematic diagram of valve control for adsorption in tower A and heating delay in tower B of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0060] Fig.17 The present invention is a valve control schematic diagram of the A tower adsorption and B tower cold blowing regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0061] Fig.18 The present invention is a schematic diagram of valve control for adsorption in tower A and pressurization in tower B of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0062] Fig.19 The invention discloses a valve control schematic diagram of the A tower adsorption and the B tower adsorption of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0063] Fig. 20 It is a valve control schematic diagram of the B tower adsorption and A tower regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0064] Fig.21 It is a valve control schematic diagram of the B tower adsorption and the A tower first-stage full-flow heating regeneration of a low-dew point energy-saving low-gas-consumption compression heat adsorption dryer of the present invention.

[0065] Fig. 22 It is a valve control schematic diagram of the B tower adsorption and the A tower second stage partial flow heating regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0066] Fig.23 It is a valve control schematic diagram of the B tower adsorption and A tower heating delay of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0067] Fig.24 The present invention is a valve control schematic diagram of the B tower adsorption and A tower cold blowing regeneration of a low dew point energy-saving low gas consumption compression heat absorption dryer.

[0068] Fig.25 It is a valve control schematic diagram of the B tower adsorption and A tower pressurization of a low dew point energy-saving low gas consumption compression heat absorption dryer of the present invention.

[0069] Fig.26 It is a valve control schematic diagram of the B tower adsorption and A tower adsorption of a low dew point energy-saving low gas consumption compression heat adsorption dryer of the present invention.

[0070] 1. Main air inlet pipe; 2. Heater; 3. Cooler; 4. Proportional regulating valve; 101. Air inlet temperature sensor; 102. Heating outlet temperature sensor; 5. Base; 6. Adsorption tower A; 7. Adsorption tower B; 61. Regeneration outlet valve of tower A; 71. Regeneration outlet valve of tower B; 72. Hot regeneration outlet pipe; 8. Gas-liquid separator; 81. Liquid storage tank; 103. Cooling outlet temperature sensor; 62. Exhaust pipe; 63. Inlet valve of tower A; 73. Inlet valve of tower B; 64. Regeneration inlet valve of tower A; 74. Regeneration inlet valve of tower B; 66. Regeneration cold blowing valve of tower A; 76. Regeneration cold blowing valve of tower B; 11. Main output pipe; 12. Cold blowing pipe; 6 5. Exhaust valve of tower A; 75. Exhaust valve of tower B; 67. Interface of dew point meter; 68. Interface of gas source processor; 9. Control module; 10. Power supply equipment; 69. Pressure relief valve of tower A; 77. Pressure relief valve of tower B; 78. Muffler; 104. Temperature sensor of exhaust gas from cooling; 105. Temperature sensor of exhaust gas from regeneration; 601. Adsorbent disk; 602. First adsorption part; 603. Second adsorption part; 604. Third adsorption part; 611. Upper disk body; 612. Lower disk body; 613. Adsorption particles; 614. Accommodation space; 701. Electric heating tube; 702. Electric heating wire; 703. Shell; 704. Conductive module; 705. Heating plate. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0072] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] Reference Figure 1-11 As shown, a low dew point energy-saving low gas consumption compression heat adsorption dryer comprises:

[0074] A main air intake pipe 1, a heater 2 and a cooler 3 connected to the main air intake pipe 1, and a ratio regulating valve 4 arranged on the main air intake pipe 1, through which the ratio of airflow entering the heater 2 and the cooler 3 is regulated;

[0075] The main intake pipe 1 is provided with an intake air temperature sensor 101 , the heater 2 is provided with a heating protection temperature sensor, and the heater 2 is provided with a heating outlet temperature sensor 102 at the outlet.

[0076] An adsorption tower A 6 and an adsorption tower B 7 are installed above the base 5, and the pipe openings below the adsorption tower A 6 and the adsorption tower B 7 are connected to the cooler 3 through a thermal regeneration outlet pipe 72. An A tower regeneration outlet valve 61 is provided below the adsorption tower A 6, and a B tower regeneration outlet valve 71 is provided below the adsorption tower B 7. By controlling the opening / closing state of the A tower regeneration outlet valve 61 and the B tower regeneration outlet valve 71, the connection state of the cooler 3 and the A adsorption tower 6 and the B adsorption tower 7 is adjusted;

[0077] A gas-liquid separator 8 whose input port is connected to the output port of the cooler 3, and whose output port is connected to the heat regeneration gas outlet pipe 72;

[0078] Wherein, a cooling outlet temperature sensor 103 is provided at the connection between the cooler 3 and the gas-liquid separator 8;

[0079] The pipe openings above the A adsorption tower 6 and the B adsorption tower 7 are connected to the heater 2 through the exhaust pipe 62. An A tower regeneration cooling valve 66 is provided between the A adsorption tower 6 and the heater 2. A B tower regeneration cooling valve 76 is provided between the B adsorption tower 7 and the heater 2. The connection state of the A adsorption tower 6, the B adsorption tower 7 and the heater 2 is adjusted by controlling the opening / closing state of the A tower regeneration cooling valve 66 and the B tower regeneration cooling valve 76.

[0080] A main output pipe 11, wherein the main output pipe 11 is connected to the A adsorption tower 6 and the B adsorption tower 7, an A tower exhaust valve 65 is provided between the A adsorption tower 6 and the main output pipe 11, and a B tower exhaust valve 75 is provided between the B adsorption tower 7 and the main output pipe 11, and the connection state between the A tower exhaust valve 65 and the B tower exhaust valve 75 is adjusted by controlling the opening / closing state of the A tower exhaust valve 65 and the B tower exhaust valve 75;

[0081] The side of the main output pipe 11 is also provided with a dew point meter interface 67 and an air source processor interface 68, which are connected to an external dew point meter and an air source processor respectively.

[0082] A cooling pipe 12 is connected to the upper ports of the A adsorption tower 6 and the B adsorption tower 7. The A tower regeneration cooling valve 66 is provided on the side of the cooling pipe 12 close to the A adsorption tower 6. The B tower regeneration cooling valve 76 is provided on the side of the cooling pipe 12 close to the B adsorption tower 7. By switching the open / closed state of the A tower regeneration cooling valve 66 or the B tower regeneration cooling valve 76, the regeneration cooling airflow is controlled to be input into the A adsorption tower 6 / B adsorption tower 7;

[0083] The control module 9 is electrically connected to the external power supply device 10, the heater 2, the cooler 3, the proportional regulating valve 4, the A tower regeneration outlet valve 61, the B tower regeneration outlet valve 71, the gas-liquid separator 8, the A tower regeneration cold blowing valve 66, the B tower regeneration cold blowing valve 76, the A tower exhaust valve 65, and the B tower exhaust valve 75. The control module 9 is electrically connected to the power supply device 10.

[0084] Among them, the A adsorption tower 6 is provided with an A tower pressure relief valve 69, the B adsorption tower 7 is provided with a B tower pressure relief valve 77, the cooling pipe 12 is connected with the A tower pressure relief valve 69 and the B tower pressure relief valve 77, and the cooling pipe 12 between the A tower pressure relief valve 69 and the B tower pressure relief valve 77 is also installed with a muffler 78, and a cooling exhaust gas temperature sensor 104 is provided between the muffler 78 and the cooling pipe 12.

[0085] A regeneration tail gas temperature sensor 105 is provided on one side of the cooling pipe 12 close to the A tower regeneration cooling valve 66 and the B tower regeneration cooling valve 76 .

[0086] It also includes a liquid storage tank 81, which is connected to the gas-liquid separator and receives and stores the liquid separated by the gas-liquid separator.

[0087] During use, compressed air during the adsorption process enters the ratio control valve 4 through the main air intake pipe 1. The ratio control valve 4 adjusts the air flow ratio entering the heater 2 and the cooler 3 according to the intake air temperature and flow rate.

[0088] A part of the air flow is heated by the heater 2 and then enters the adsorption tower currently in the regeneration state (assuming it is the B adsorption tower 7), and the other part of the air flow is cooled by the cooler 3 and then enters the A adsorption tower 6.

[0089] After adsorption treatment in the adsorption tower, the dry compressed air enters the main output pipe 11 through the exhaust valve 65 of tower A, and is further processed by the air source processor before being output.

[0090] During the regeneration process, the proportional control valve 4 adjusts the air flow ratio so that a smaller proportion of the air flow enters the heater 2 .

[0091] The regenerated gas enters the cooler 3 through the B tower regeneration outlet valve 71, and after cooling, the liquid is separated through the gas-liquid separator 8.

[0092] The regeneration gas is discharged through the hot regeneration outlet pipe 72 , and the liquid enters the liquid storage tank 81 through the gas-liquid separator 8 .

[0093] During the cooling process, after regeneration is completed, the cooling pipe 12 blows cold air into the regenerated adsorption tower (assuming it is adsorption tower B 7) through the A tower regeneration cooling valve 66 or the B tower regeneration cooling valve 76 to lower the temperature of the adsorbent and restore it to a state suitable for adsorption.

[0094] The blown-cool exhaust gas is discharged through the blown-cool pipe 12 , passes through the muffler 78 to reduce noise, and at the same time, the temperature is monitored by the regenerated exhaust gas temperature sensor 105 .

[0095] During the switching process, when the A adsorption tower 6 reaches a saturated state, the control module 9 switches the roles of the A adsorption tower 6 and the B adsorption tower 7 .

[0096] The A adsorption tower 6 enters the regeneration process, and the B adsorption tower 7 enters the adsorption process.

[0097] The tower body is switched by closing the exhaust valve 65 of tower A and the regeneration cooling valve 66 of tower A and opening the regeneration outlet valve 61 of tower A; at the same time, closing the regeneration outlet valve 71 of tower B and opening the exhaust valve 75 of tower B and the regeneration cooling valve 76 of tower B.

[0098] The proportional control valve 4 can dynamically adjust the heating amount according to the intake air temperature and flow rate by adjusting the air flow ratio entering the heater 2 and the cooler 3, thereby reducing unnecessary energy waste. The temperature sensor monitors the intake air temperature, the heating outlet temperature and the cooling outlet temperature in real time to ensure the efficient heating and cooling process.

[0099] The temperature control system control module 9 automatically adjusts the power of the heater 2 according to the feedback from the temperature sensor to ensure that the temperature of the adsorbent bed is always within the optimal range, thereby improving the regeneration effect and achieving a lower dew point.

[0100] The segmented heating passes through the proportional regulating valve 4, so that part of the airflow directly passes through the cooler 3, which reduces the burden on the heater 2 and reduces power consumption.

[0101] Optimize the regeneration process During the regeneration process, the airflow ratio is adjusted to ensure the temperature and flow of the regeneration gas, improve the regeneration efficiency, and reduce the time and energy required for regeneration.

[0102] Reducing air flow resistance By optimizing air flow distribution and valve control, the resistance of air flow through heater 2 and cooler 3 is reduced, thereby reducing the pressure drop of the whole machine.

[0103] In the multi-tower design, adsorption tower A 6 and adsorption tower B 7 are used alternately, and can be switched in time when the adsorption tower reaches saturation, avoiding the increase of pressure drop caused by long-term high-load operation.

[0104] Regeneration and cooling separation During the regeneration process, the airflow heated by the heater 2 is only used for regeneration, and the cold airflow is used during the cooling process to reduce the consumption of finished gas.

[0105] The silencer 78 and the temperature sensor reduce the noise during the cooling process through the silencer 78 and monitor the temperature of the cooling exhaust gas through the temperature sensor to ensure the efficiency of the cooling process.

[0106] At low dew points, the regeneration effect of the adsorbent is ensured by optimizing the heating and cooling process, thereby achieving a lower dew point. High energy efficiency Through the dynamic control of the proportional control valve 4 and the temperature sensor, unnecessary energy waste is reduced and the energy efficiency of the whole machine is improved. Low pressure drop Optimize the air flow distribution and valve control, reduce the resistance of the air flow through the heater 2 and the cooler 3, and reduce the pressure drop. Low operating cost Reduce operating costs by reducing the consumption of finished gas and reducing power consumption.

[0107] A proportional regulating valve 4 is installed on the main air intake pipe 1 to adjust the ratio of airflow entering the heater 2 and the cooler 3 .

[0108] Normal working conditions: heating airflow ratio 35%-45%, cooling airflow ratio 55%-65%, suitable for intake air temperature 15°C-30°C.

[0109] Low temperature conditions: heating airflow ratio 55%-65%, cooling airflow ratio 35%-45%, suitable for intake air temperature 0°C-15°C.

[0110] High temperature conditions: heating airflow ratio 25%-35%, cooling airflow ratio 65%-75%, suitable for intake air temperature 30°C-45°C.

[0111] Extreme low temperature conditions: heating airflow ratio 65%-75%, cooling airflow ratio 25%-35%, suitable for intake air temperature -15°C-0°C.

[0112] Extreme high temperature conditions: heating airflow ratio 20%-30%, cooling airflow ratio 70%-80%, suitable for intake air temperature 45°C-60°C.

[0113] The control algorithm adopts PID control algorithm or other advanced control strategies to dynamically adjust the opening of the proportional control valve 4 according to the intake air temperature and flow rate.

[0114] In the temperature sensor feedback, the intake air temperature sensor 101 monitors the intake air temperature as an input parameter for adjusting the proportional control valve 4.

[0115] Heating outlet temperature sensor 102: monitors the temperature of the heated gas to ensure the heating effect.

[0116] Cooling outlet temperature sensor 103: monitors the temperature of the gas after cooling to ensure the cooling effect.

[0117] In the low dew point energy-saving low gas consumption compression heat adsorption dryer, the internal design of the A adsorption tower 6 and the B adsorption tower 7 is the same. In particular, considering the spacing of the adsorbent discs 601, multiple groups of adsorbent discs 601 longitudinally arranged inside the A adsorption tower 6 are included, and the spacing between two adjacent adsorbent discs 601 is 13mm-28mm.

[0118] In order to evenly distribute the airflow, the spacing between the adsorbent discs 601 is between 13 mm and 28 mm, which can ensure that the airflow is evenly distributed in the tower body. If the spacing is too small, the airflow may form a "short circuit", and most of the airflow will be concentrated on certain paths, resulting in uneven air contact between the adsorbent discs 601, affecting the drying effect.

[0119] If the spacing is too large, the path of the airflow in the tower body will be too long, which will increase the pressure drop, reduce the energy efficiency of the equipment, and may cause part of the airflow to not fully contact the adsorbent, which will also affect the drying effect. Ensure that the airflow has enough residence time between each adsorbent disk 601 so that the adsorbent can fully absorb moisture. This not only improves the utilization rate of the adsorbent, but also extends the working time of the adsorption tower and reduces the regeneration frequency.

[0120] At the same time, the spacing design ensures uniform contact of the airflow between each adsorbent disk 601, avoiding the problem of premature saturation of a local adsorbent disk 601 or insufficient local adsorption.

[0121] When the spacing between the adsorbent discs 601 is too small, the resistance of airflow will increase, resulting in increased pressure drop. A moderate spacing can balance the airflow resistance and airflow distribution uniformity, reduce pressure drop, and improve the energy efficiency of the equipment.

[0122] During the regeneration process, the heated airflow needs to pass through the adsorbent disc 601 evenly to ensure that the adsorbent can fully desorb moisture. The appropriate spacing can ensure the residence time of the heated airflow between each adsorbent disc 601 and improve the regeneration effect.

[0123] When the spacing between the adsorbent discs 601 is 13 mm, this is the minimum spacing between the adsorbent discs 601. Under this spacing, the air flow distribution is more uniform, but a lower pressure drop can still be ensured. It is suitable for higher intake temperature and lower flow conditions.

[0124] When the spacing between the adsorbent discs 601 is 28 mm, this is the maximum spacing between the adsorbent discs 601. At this spacing, the uniformity of air flow distribution is slightly worse, but the pressure drop is lower, which is suitable for lower intake temperature and higher flow conditions.

[0125] In addition, when the intake air temperature is low and the pressure is high, the adsorption capacity of the adsorbent is stronger, and the spacing can be appropriately reduced to improve the adsorption effect and uniformity of airflow distribution (the recommended spacing is 13mm-18mm).

[0126] When the high-temperature intake air is at a high intake temperature and low pressure, the adsorption capacity of the adsorbent is weak. The spacing can be appropriately increased to reduce the pressure drop and ensure sufficient contact of the airflow (the recommended spacing is 23mm-28mm).

[0127] Among them, low temperature and high pressure adsorption, the adsorption process is usually carried out at a lower temperature (such as 20°C-30°C).

[0128] The adsorption process is usually carried out at a relatively high pressure (eg 7-10 bar).

[0129] High temperature and low pressure regeneration, the regeneration process is usually carried out at a higher temperature (e.g. 150°C-200°C). The regeneration process is usually carried out at a lower pressure (e.g. 0.5-1bar).

[0130] During low temperature and high pressure adsorption, the airflow speed is also faster due to the high airflow pressure during the adsorption process. Setting appropriate spacing can ensure uniform distribution of airflow in the adsorption tower and avoid uneven adsorption caused by local over-flow.

[0131] During high temperature and low pressure regeneration, the airflow speed is slow due to the high airflow temperature and low pressure during the regeneration process. Appropriate spacing can ensure the uniform distribution of the heated airflow in the adsorption tower, avoid local overheating, and improve regeneration efficiency.

[0132] The above spacing design can maximize the utilization rate of the adsorbent. During the adsorption process, the appropriate spacing can ensure the residence time of the airflow between each adsorbent disk 601, so that the adsorbent can fully absorb moisture and improve the utilization rate of the adsorbent.

[0133] During the regeneration process, the appropriate spacing can ensure uniform contact of the heated airflow between each adsorbent disk 601, so that the adsorbent can fully desorb moisture and improve the regeneration effect.

[0134] During the adsorption process, higher pressure will lead to greater pressure drop. Proper spacing can reduce the resistance of airflow and reduce pressure drop.

[0135] During regeneration, lower pressure means less resistance to airflow. Proper spacing can further reduce pressure drop and improve the energy efficiency of the system.

[0136] For example: Comprehensive consideration: 1. Adsorption conditions: temperature: 20°C-30°C, pressure: 7-10bar, recommended spacing: 15mm-20mm.

[0137] 2. Regeneration conditions, temperature: 150°C-200°C, pressure: 0.5-1bar, recommended spacing: 23mm-28mm.

[0138] In order to maximize the utilization rate of the adsorbent, the middle part of the adsorbent disk 601 is arc-shaped and convex upward to form a first adsorption part 602, the edges of both sides of the adsorbent disk 601 are arc-shaped and bent upward to form a second adsorption part 603, and the edges of both sides of the adsorbent disk 601 are arc-shaped and bent downward to form a third adsorption part 604. The second adsorption part 603 and the third adsorption part 604 are arranged alternately.

[0139] Since the airflow in the adsorption tower is from bottom to top during adsorption, when viewed from bottom to top, two groups of raised second adsorption areas are formed below the adsorbent disk 601, which can also be used for flow diversion as well as two groups of concave third adsorption areas and the first adsorption area in the middle.

[0140] The adsorbent disc 601 includes an upper disc body 611 and a lower disc body 612. The upper disc body 611 and the lower disc body 612 are fixedly connected at their edges. An interlayer is provided between the upper disc body 611 and the lower disc body 612. Adsorbent particles 613 are filled in the interlayer. Fine air holes are provided on the upper disc body 611 and the lower disc body 612. The aperture of the air holes is smaller than the aperture of the adsorbent particles 613. The air holes are used to fix the adsorbent particles 613 so that they do not separate from the adsorbent disc 601.

[0141] The middle part of the adsorbent disc 601 is convex in an arc shape upward to form a first adsorption part 602. The design of the middle part convex upward can increase the surface area of ​​the adsorbent disc 601 and provide more adsorption sites. When the airflow passes through the convex area in the middle, it will be forced to be more evenly distributed, increasing the contact time between the airflow and the adsorbent and improving the adsorption efficiency.

[0142] The edges of both sides of the adsorbent disc 601 are bent upward in an arc shape to form a second adsorption portion 603. The design of the edges of both sides bending upward also increases the surface area of ​​the adsorbent disc 601, providing more adsorption sites. It can also play a role in diversion, dividing the airflow into multiple streams, reducing the possibility of airflow short circuit, and ensuring that the airflow is more evenly distributed in the adsorption tower.

[0143] The edges of both sides of the adsorbent disc 601 are bent downward in an arc shape to form a third adsorption portion 604. The design of the edges of both sides bending downward forms a concave area, which also increases the surface area of ​​the adsorbent disc 601. The concave area can capture more airflow, further improve the contact efficiency between the airflow and the adsorbent, reduce the direct path of the airflow, and increase the adsorption effect.

[0144] The second adsorption part 603 and the third adsorption part 604 are arranged alternately. The alternate arrangement design allows the airflow to continuously switch between multiple paths when passing through the adsorption tower, thereby increasing the path length and contact time of the airflow. This can maximize the adsorption capacity of the adsorbent, reduce local adsorption saturation, and improve the overall adsorption effect and utilization rate of the adsorbent.

[0145] Through the design of protrusions and bends, the surface area of ​​the adsorbent disc 601 is greatly increased, providing more adsorption sites, thereby improving the adsorption efficiency of the adsorbent. The design of protrusions and bends makes the distribution of the airflow in the adsorption tower more uniform, avoiding local overcurrent or short circuit phenomena, and ensuring that each adsorption area can be fully utilized. In addition, the upward arc bend design of the second adsorption part 603 can play a role in diversion, dividing the airflow into multiple strands, reducing the resistance of the airflow in the adsorption tower, and reducing the pressure drop. Through the downward arc bend design of the third adsorption part 604, the airflow path is optimized, reducing the resistance of the airflow when passing through, and further reducing the pressure drop.

[0146] The convex and curved structures designed on the adsorbent disc 601 make the airflow load in the adsorption tower more uniform, reduce the premature saturation of the local adsorbent disc 601, and extend the service life of the adsorbent. During the regeneration process, this design also helps to evenly distribute the airflow, improve the regeneration efficiency of the heated airflow, and ensure that the adsorbent can completely desorb moisture and restore adsorption performance.

[0147] When the airflow passes through the adsorption tower, it will continuously switch between multiple paths, increasing the contact time between the airflow and the adsorbent, thereby improving the drying effect. Through uniform distribution and multi-path contact, the moisture in the airflow can be more thoroughly adsorbed, reducing residual moisture and improving the quality of the final dry gas.

[0148] The upper plate 611 and the lower plate 612 are provided with a plurality of arc-shaped concave structures downward, and the concave depth of the upper plate 611 is smaller than that of the lower plate 612. The arc-shaped concave structures of the upper plate 611 and the lower plate 612 cooperate to form a receiving space 614, and the adsorption particles 613 are filled in the receiving space 614. The upper plate 611 and the lower plate 612 are connected by bolt fixing or clamping fixing. In the adsorption state, the airflow is input from the bottom to the top, and the concave structure of the lower plate 612 will form a convexity on the windward side, thereby introducing the airflow into the interior while guiding the airflow.

[0149] In order to increase the uniformity of the adsorbent filling, the arc-shaped concave structures of the upper and lower disks 612 cooperate to form a plurality of evenly distributed accommodating spaces 614, which can ensure that the adsorbent particles 613 are filled more evenly in each space.

[0150] The concave structure of the lower plate 612 forms a convexity on the windward side, which can guide the airflow into each accommodating space 614, ensuring that the airflow is more evenly distributed in the adsorption tower, reducing the short circuit phenomenon of the airflow in the adsorption tower, ensuring that the airflow can fully contact the adsorption particles 613, and improving the adsorption efficiency.

[0151] The design of the arc-shaped concave structure increases the contact area between the adsorbent particles 613 and the airflow, thereby improving the utilization rate of the adsorbent. When the airflow passes through the multiple accommodating spaces 614, the path is optimized, increasing the contact time between the airflow and the adsorbent, further improving the adsorption effect.

[0152] The upper plate 611 and the lower plate 612 can be connected by bolting or clamping, which is convenient for installation and maintenance of the adsorption tower and can quickly disassemble and replace the adsorbent. The combination of the two can be regarded as a module, and the modular design makes the maintenance and overhaul of the adsorption tower more convenient.

[0153] The protrusion formed by the concave structure of the lower plate 612 evenly guides the airflow into each accommodating space 614, ensuring sufficient contact between the airflow and the adsorbent, thereby improving the adsorption efficiency. The arc-shaped concave structure increases the exposed area of ​​the adsorbent particles 613, thereby improving the utilization rate of the adsorbent.

[0154] The optimized airflow path reduces the resistance of airflow through the adsorption tower, thereby reducing the pressure drop of the whole machine. The uniform distribution of airflow in the adsorption tower reduces local over-flow phenomenon and avoids unnecessary increase in pressure drop.

[0155] During the regeneration process, the concave structure of the lower plate 612 can also evenly guide the airflow into each accommodating space 614, thereby improving the uniformity of the distribution of the regeneration gas and thus improving the regeneration efficiency. Through the flow-guiding design, the temperature distribution of the regeneration gas is more uniform, reducing the local overheating phenomenon, and ensuring the complete desorption of the adsorbent and the restoration of the adsorption performance.

[0156] Since the airflow is more evenly distributed in the adsorption tower, premature saturation of local adsorbent is reduced, and the service life of the adsorbent is extended. The temperature distribution during the regeneration process is even, which reduces the thermal damage to the adsorbent and further extends the service life of the adsorbent.

[0157] Traditional adsorption tower designs usually use a flat adsorbent disc 601, which has uneven airflow distribution and is prone to local overcurrent or short circuit, affecting the adsorption effect. Through the design of the arc-shaped concave structure, the airflow is more evenly distributed in the adsorption tower, improving the adsorption efficiency and stability.

[0158] The traditional design has a low utilization rate of adsorbent, which is prone to local adsorption saturation, resulting in a decrease in the overall adsorption effect. By increasing the contact area of ​​the adsorbent and optimizing the airflow path, the utilization rate of the adsorbent is improved and a higher adsorption efficiency is achieved.

[0159] In traditional designs, the airflow through the adsorption tower has a large resistance, resulting in a high pressure drop, which affects the energy efficiency of the system. By reducing the airflow resistance and optimizing the airflow path, the pressure drop of the whole machine is significantly reduced, and the energy efficiency of the system is improved.

[0160] In the traditional design, the airflow distribution is uneven during the regeneration process, which is prone to local overheating or incomplete regeneration, affecting the regeneration effect. By optimizing the regeneration airflow distribution, the temperature and flow of the regeneration gas are ensured to be more uniform, the regeneration efficiency is improved, and the time and energy required for regeneration are reduced.

[0161] The adsorbent disc 601 in the conventional design is not easy to disassemble and replace, and the maintenance cost is high. The modular design and convenient connection method reduce the maintenance and replacement costs and improve the reliability of the equipment.

[0162] Through the coordination of the arc-shaped concave structures of the upper and lower disks 612, a plurality of evenly distributed accommodation spaces 614 are formed, which optimizes the distribution of airflow and the filling of the adsorbent, thereby improving the adsorption efficiency, reducing the pressure drop, extending the service life of the adsorbent, and facilitating maintenance and replacement. Compared with the traditional design, this design has significant advantages in terms of airflow distribution, adsorbent utilization, pressure drop, regeneration efficiency and maintenance convenience.

[0163] Selecting the right adsorption particle 613 material is crucial to the performance and efficiency of the adsorption tower. The following are some common adsorption particle 613 materials and their characteristics:

[0164] Features of activated alumina:

[0165] High Adsorption Capacity: Activated alumina has a high water vapor adsorption capacity, especially under high humidity conditions.

[0166] Low pressure drop: The activated alumina particles have a relatively regular structure and low wind resistance, making them suitable for high-flow systems.

[0167] Good mechanical strength: resistant to pressure and wear, and has a long service life.

[0168] Good regeneration performance: It can be regenerated by heating or purging to restore the adsorption performance.

[0169] Application: Widely used in compressed air drying, gas purification and other fields.

[0170] 2. Molecular sieve

[0171] Features:

[0172] High selectivity: Molecular sieves have specific pore sizes and can specifically adsorb molecules of different sizes, such as water molecules, carbon dioxide molecules, etc.

[0173] High adsorption efficiency: fast adsorption speed and large adsorption capacity, especially better performance under low humidity conditions.

[0174] Good thermal stability: resistant to high temperatures, suitable for high temperature regeneration.

[0175] Porous structure: The interior is porous, which increases the contact area with the airflow and improves the adsorption effect.

[0176] Application: Suitable for high-precision applications such as deep drying of compressed air, gas separation and purification.

[0177] 3. Activated carbon

[0178] Features:

[0179] Wide adsorption range: It can adsorb a variety of organic and inorganic gases, such as moisture, oil, odor, etc.

[0180] High specific surface area: The internal porous structure provides a large specific surface area and increases the adsorption capacity.

[0181] Stable chemical properties: not easy to react with other substances, suitable for a variety of gas environments.

[0182] Good regeneration performance: The adsorption performance can be restored by heating or steam regeneration.

[0183] Application: Widely used in gas purification, air purification, solvent recovery and other occasions.

[0184] In this embodiment, the adsorption particles 613 are molecular sieves.

[0185] The heater 2 includes an electric heating tube 701, an electric heating wire 702 wound around the outer ring of the electric heating tube 701, a housing 703 sleeved on the outside of the electric heating tube 701 and the electric heating wire 702, and a conductive module 704 connected to the electric heating wire 702, and the conductive module 704 is electrically connected to the control module 9. A plurality of groups of heating plates 705 are arranged around the axis on the inner side of the electric heating tube 701, and the heating plates 705 are inclined toward the air inlet end, and the width of the heating plates 705 gradually decreases from the connection with the electric heating tube 701 toward the end.

[0186] Electric heating tube 701: The electric heating tube 701 is the main heating element of the heater 2, and generates heat through the thermal effect of electric current.

[0187] Heating wire 702: The heating wire 702 wound around the outer ring of the heating tube 701 further increases the heating area and improves the thermal efficiency.

[0188] Shell 703: The shell 703, which is mounted on the outside of the electric heating tube 701 and the electric heating wire 702, protects the heating element, prevents heat loss, and guides the air flow through the heater 2.

[0189] The conductive module 704 is connected to the heating wire 702 and is electrically connected to the control module 9 to achieve fine control of the heating process.

[0190] The heating plate 705 is tilted, and the heating plate 705 is tilted toward the air inlet end, which helps to introduce and guide the airflow and reduce the resistance of the airflow when passing through the heater 2.

[0191] The width of the heating plate 705 gradually decreases from the connection point with the electric heating tube 701 toward the end, so that the obstruction of the heating plate 705 to the airflow is gradually weakened, and the airflow can be more evenly distributed in various areas of the heater 2.

[0192] In this embodiment, a group of heating plates 705 is provided with 3-4 pieces, and the heating plates 705 between adjacent groups are arranged in a staggered manner. The spacing between the heating plates 705 between adjacent groups is 10mm-15mm. In this embodiment, the spacing is 15mm.

[0193] By arranging multiple groups of heating plates 705 around the inner side of the electric heating tube 701, the heating area is increased, the thermal efficiency is improved, and the airflow can reach the required temperature more quickly. The heating wire 702 is wound around the outer ring of the electric heating tube 701, further increasing the heating area and improving the overall heating efficiency.

[0194] By the inclined setting and gradually narrowing width of the heating plate 705 , the airflow can pass through the heater 2 more smoothly, reducing the resistance of the airflow slowly flowing through the heater 2 , thereby reducing the pressure drop of the heater 2 .

[0195] Uniform load: Optimized air flow distribution reduces local over-flow and avoids unnecessary increase in pressure drop.

[0196] Through the optimized design of the heating plate 705 and the heating wire 702, the regeneration gas can be heated more evenly, ensuring a more even temperature distribution of the adsorbent during the regeneration process, thereby improving the regeneration efficiency.

[0197] The heater 2 in the traditional design is not uniform in airflow distribution, which is prone to local over-current, affecting the heating effect. However, the inclined setting and gradually narrowing width design of the heating plate 705 optimizes the airflow distribution, reduces the resistance of the airflow passing through the heater 2, and ensures the uniformity and efficiency of the heating process.

[0198] The heater 2 in the traditional design is prone to cause a high pressure drop due to uneven airflow distribution, which affects the energy efficiency of the system.

[0199] By reducing the air flow resistance, the pressure drop of the heater 2 is significantly reduced, thereby improving the overall energy efficiency of the system.

[0200] By adding multiple groups of heating plates 705 in the electric heating tube 701 and setting them at an angle with a gradually narrowed width, the airflow distribution and thermal efficiency of the heater 2 are optimized, the pressure drop is significantly reduced, the regeneration efficiency is improved, and the service life of the heater 2 is extended. Compared with the traditional design, this design has significant advantages in thermal efficiency, airflow distribution, pressure drop, temperature control, regeneration efficiency and service life, and is suitable for adsorption tower systems that require high efficiency, low energy consumption and long service life.

[0201] Reference Figure 12-26 As shown, in the above dryer, the working method of the low dew point energy-saving low gas consumption compression heat adsorption dryer includes the following steps:

[0202] S1: standby state;

[0203] System status: The normally open valves (V1, V2, V9, V10, V13) of adsorption tower A 6 and adsorption tower B 7 remain open to maintain the stability of the system and the preset air flow channel.

[0204] Airflow status: The basic working state of the equipment is maintained through natural airflow, and the system is in low-energy standby mode to adapt to subsequent operating needs.

[0205] S2: A adsorption tower 6 starts adsorption;

[0206] System status: Adsorption tower A 6 begins to absorb moisture in the air, and adsorption tower B 7 is in a state of waiting for regeneration.

[0207] Valve operation: Close V2 (the air inlet valve of adsorption tower 7 of B);

[0208] Close V10 (the outlet valve of adsorption tower 7 of B)

[0209] Air flow state: avoid ineffective air flow into B adsorption tower 7.

[0210] S3: A adsorption tower 6 completes adsorption, and B adsorption tower 7 is heated and regenerated;

[0211] System status: A adsorption tower 6 completes adsorption, and B adsorption tower 7 is heated and regenerated.

[0212] Valve operation: open V6 (regeneration air inlet valve of B adsorption tower 7), open V8 (regeneration air outlet valve of B adsorption tower 7);

[0213] V13 proportional control valve 4 delayed closing (delay time adjustable to optimize airflow and energy transmission);

[0214] Airflow status: By controlling the precise opening and closing of the valve, the airflow path and temperature are adjusted to ensure the regeneration process is effective while reducing energy consumption.

[0215] Heater 2 status: Heater 2 is off and full flow heating regeneration is used.

[0216] S4: A adsorption tower 6 adsorption and maintenance, B adsorption tower 7 second phase partial flow heating regeneration;

[0217] System status: Adsorption tower A 6 continues to maintain the adsorption state, and adsorption tower B 7 enters the second phase of partial flow heating regeneration.

[0218] Valve operation: V13 proportional control valve 4 is opened to achieve precise airflow regulation;

[0219] Airflow status: Maintain low energy operation of the system through partial flow heating.

[0220] S5: A adsorption tower 6 maintains adsorption, and B adsorption tower 7 delays heating;

[0221] System status: Adsorption tower A 6 continues to maintain the adsorption state, and the regeneration of adsorption tower B 7 requires delayed heating.

[0222] Valve operation: V6 valve opens, V8 valve opens, V13 valve closes with delay (delay time is adjustable to optimize the use of heat energy);

[0223] Airflow state: ensure that no energy is wasted during the adsorption process of adsorption tower A 6, and the system achieves energy-saving effect.

[0224] S6: The adsorption process of adsorption tower A 6 continues, and adsorption tower B 7 is blown cold for regeneration;

[0225] System status: The adsorption process of adsorption tower A 6 continues, and adsorption tower B 7 is undergoing cooling and regeneration.

[0226] Valve operation: V13 valve opens first to control the airflow, V6 valve closes with delay, V8 valve closes with delay, V12 valve opens to release pressure, and V4 valve opens last to further complete the regeneration cooling process;

[0227] Airflow status: Through precise valve control, ensure smooth transition of temperature and pressure to avoid excessive energy consumption.

[0228] S7: A adsorption tower 6 late adsorption stage, B adsorption tower 7 pressurization stage;

[0229] System status: Adsorption tower A 6 is in the late stage of adsorption, and adsorption tower B 7 begins the pressurization stage.

[0230] Valve operation: V12 valve closed

[0231] Airflow status: The system airflow is stable to avoid energy waste during the charging process.

[0232] S8: adsorption tower switching process;

[0233] System status: both adsorption tower A 6 and adsorption tower B 7 enter the adsorption switching process.

[0234] Valve operation: V1 valve closed, V9 valve closed, V2 valve closed, V10 valve closed;

[0235] V13 valve remains open or adjusted as needed

[0236] Airflow status: Through precise valve control, the best adsorption effect is maintained to ensure the drying effect and efficient operation of the system.

[0237] S9: B adsorption tower 7 adsorption is maintained, A adsorption tower 6 is to be regenerated

[0238] System status: B adsorption tower 7 maintains the adsorption state, and A adsorption tower 6 enters the regeneration state.

[0239] Valve operation: V1 valve is closed, V9 valve is closed;

[0240] Air flow state: avoid unnecessary air flow into adsorption tower A 6.

[0241] S10: A adsorption tower 6 is heated and regenerated;

[0242] System status: A adsorption tower 6 enters the heating regeneration stage.

[0243] Valve operation: Open V5 (regeneration air inlet valve of adsorption tower 6);

[0244] Open V7 (regeneration outlet valve of adsorption tower 6 of A) and delay closing of valve V13 (delay time is adjustable to optimize airflow and energy transmission);

[0245] Airflow status: By controlling the precise opening and closing of the valve, the airflow path and temperature are adjusted to ensure the regeneration process is effective while reducing energy consumption.

[0246] Heater 2 status: Heater 2 is off and full flow heating regeneration is used.

[0247] S11: A adsorption tower 6 second phase partial flow heating regeneration;

[0248] System status: Adsorption tower A 6 enters the second phase of partial flow heating regeneration.

[0249] Valve operation: V13 proportional control valve 4 is opened to achieve precise airflow regulation;

[0250] Airflow status: Reduce energy waste and improve energy efficiency through partial flow heating.

[0251] S12: Heating of adsorption tower A 6 is delayed;

[0252] System status: The regeneration of adsorption tower 6 requires delayed heating.

[0253] Valve operation: V5 valve opens first;

[0254] V7 valve opens first, V13 valve closes with delay (delay time is adjustable to achieve energy saving)

[0255] Airflow status: Maintain system stability by delaying the closing of V13 valve.

[0256] S13: A adsorption tower 6 cooling regeneration

[0257] System status: A adsorption tower 6 is undergoing cooling regeneration.

[0258] Valve operation: V13 valve opens first to control the airflow, V5 valve closes with delay, V7 valve closes with delay, V11 valve opens to release pressure, and V3 valve opens last to complete the cooling regeneration;

[0259] Airflow conditions: Optimize temperature and pressure control through precise valve control to ensure minimum energy consumption.

[0260] S14: B adsorption tower 7 late adsorption, A adsorption tower 6 pressurization

[0261] System status: B adsorption tower 7 is in the late stage of adsorption, and A adsorption tower 6 begins the pressurization stage.

[0262] Valve operation: V11 valve is closed;

[0263] Airflow status: Through precise valve control, the changes in airflow and pressure are made more stable, further reducing the loss of compressed air.

[0264] S15: Adsorption tower switching is completed;

[0265] System status: After the adsorption in adsorption tower B 7 is completed, adsorption tower A 6 maintains the adsorption state and completes a round of adsorption regeneration cycle.

[0266] Valve operation: V1 valve is open, V9 valve is open, V2 valve is closed, V10 valve is closed, and V13 valve is adjusted as needed;

[0267] Airflow status: Through precise valve control, ensure smooth switching of airflow and pressure to maintain efficient operation of the system.

[0268] Among them, V1: exhaust valve 65 of tower A, V2: exhaust valve 75 of tower B, V3: regeneration and cooling valve 66 of tower A, V4: regeneration and cooling valve 76 of tower B, V5: hot regeneration air inlet valve of tower A, V6: hot regeneration air inlet valve of tower B, V7: hot regeneration air outlet valve of tower A, V8: hot regeneration air outlet valve of tower B, V9: air inlet valve 63 of tower A, V10: air inlet valve 73 of tower B, V11: pressure relief valve 69 of tower A, V12: pressure relief valve 77 of tower B, V13: proportional control valve 4, T1: inlet temperature, T2: outlet temperature of cooler 3, T3: cooling tail gas temperature, T4: regeneration tail gas temperature, T5: heating protection temperature, T6: heating outlet temperature, T7: outlet temperature, T8: dew point temperature.

[0269] It should be noted that the device structure and the drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above invention, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field.

[0270] The standard parts used can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the components known to those skilled in the art, their structures and principles can be known by the technicians through technical manuals or through conventional experimental methods. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low dew point energy-saving low gas consumption compression heat adsorption dryer, characterized in that: include: A main air intake pipe (1), a heater (2) and a cooler (3) connected to the main air intake pipe (1), and a proportional control valve (4) arranged on the main air intake pipe (1), wherein the proportion of airflow entering the heater (2) and the cooler (3) is regulated by the proportional control valve (4); An adsorption tower A (6) and an adsorption tower B (7) are installed above a base (5); the pipe openings below the adsorption tower A (6) and the adsorption tower B (7) are connected to the cooler (3) via a thermal regeneration outlet pipe (72); an A tower regeneration outlet valve (61) is provided below the adsorption tower A (6); and a B tower regeneration outlet valve (71) is provided below the adsorption tower B (7); and the connection state between the cooler (3) and the adsorption tower A (6) and the adsorption tower B (7) is adjusted by controlling the opening / closing state of the A tower regeneration outlet valve (61) and the B tower regeneration outlet valve (71); a gas-liquid separator (8) whose input port is connected to the output port of the cooler (3), wherein the output port of the gas-liquid separator (8) is connected to the heat regeneration outlet pipe (72); The pipe openings above the adsorption tower A (6) and the adsorption tower B (7) are connected to the heater (2) via an exhaust pipe (62); a tower A regeneration and cooling valve (66) is provided between the adsorption tower A (6) and the heater (2); a tower B regeneration and cooling valve (76) is provided between the adsorption tower B (7) and the heater (2); and the connection state between the adsorption tower A (6), the adsorption tower B (7) and the heater (2) is adjusted by controlling the opening / closing state of the tower A regeneration and cooling valve (66) and the tower B regeneration and cooling valve (76); a main output pipe (11), the main output pipe (11) being connected to an adsorption tower A (6) and an adsorption tower B (7); an A tower exhaust valve (65) being provided between the adsorption tower A (6) and the main output pipe (11); and a B tower exhaust valve (75) being provided between the adsorption tower B (7) and the main output pipe (11); and the connection state between the adsorption tower A (6), the adsorption tower B (7) and the main output pipe (11) is adjusted by controlling the opening / closing state of the A tower exhaust valve (65) and the B tower exhaust valve (75); A cooling pipe (12) is connected to the upper ports of the A adsorption tower (6) and the B adsorption tower (7); a regeneration cooling valve (66) for tower A is provided on the side of the cooling pipe (12) close to the A adsorption tower (6); a regeneration cooling valve (76) for tower B is provided on the side of the cooling pipe (12) close to the B adsorption tower (7); and the regeneration cooling airflow is controlled to be input into the A adsorption tower (6) / B adsorption tower (7) by switching the on / off state of the A tower regeneration cooling valve (66) or the B tower regeneration cooling valve (76); A control module (9), wherein the control module (9) is electrically connected to an external power supply device (10), a heater (2), a cooler (3), a proportional control valve (4), a tower A regeneration gas outlet valve (61), a tower B regeneration gas outlet valve (71), a gas-liquid separator (8), a tower A regeneration cooling valve (66), a tower B regeneration cooling valve (76), a tower A exhaust valve (65), and a tower B exhaust valve (75); It also includes a plurality of groups of adsorbent discs (601) longitudinally arranged inside the A adsorption tower (6), wherein the distance between two adjacent adsorbent discs (601) is in the range of 13 mm to 28 mm; The middle part of the adsorbent plate (601) is arc-shaped and bulges upward to form a first adsorption portion (602); the edges of both sides of the adsorbent plate (601) are arc-shaped and bent upward to form a second adsorption portion (603); the edges of both sides of the adsorbent plate (601) are arc-shaped and bent downward to form a third adsorption portion (604); the second adsorption portion (603) and the third adsorption portion (604) are arranged alternately.

2. According to claim 1, a low dew point energy-saving low gas consumption compression heat adsorption dryer, characterized in that: It also comprises a liquid storage tank (81), the liquid storage tank (81) being in communication with the gas-liquid separator (8) and receiving and storing the liquid separated by the gas-liquid separator (8).

3. According to claim 1, a low dew point energy-saving low gas consumption compression heat adsorption dryer, characterized in that: The adsorbent disk (601) comprises an upper disk body (611) and a lower disk body (612); the upper disk body (611) and the lower disk body (612) are fixedly connected at their edges; an interlayer is provided between the upper disk body (611) and the lower disk body (612); adsorbent particles (613) are filled in the interlayer; and fine air holes are provided on the upper disk body (611) and the lower disk body (612); the aperture of the air holes is smaller than the aperture of the adsorbent particles (613).

4. According to claim 3, a low dew point energy-saving low gas consumption compression heat adsorption dryer is characterized in that: The upper disk body (611) and the lower disk body (612) are provided with a plurality of arc-shaped concave structures downwardly, and the concave depth of the upper disk body (611) is smaller than that of the lower disk body (612). The arc-shaped concave structures of the upper disk body (611) and the lower disk body (612) cooperate to form a receiving space (614), and adsorption particles (613) are filled in the receiving space (614).

5. According to claim 1, a low dew point energy-saving low gas consumption compression heat adsorption dryer, characterized in that: The heater (2) further comprises an electric heating tube (701) into which air flow is passed, an electric heating wire (702) wound around the outer ring of the electric heating tube (701), a shell (703) sleeved on the outside of the electric heating tube (701) and the electric heating wire (702), and a conductive module (704) connected to the electric heating wire (702), wherein the conductive module (704) is electrically connected to the control module (9).

6. A low dew point energy-saving low gas consumption compression heat adsorption dryer according to claim 5, characterized in that: A plurality of groups of heating plates (705) are arranged around the axis on the inner side of the electric heating tube (701), and the heating plates (705) are arranged tilted toward the air inlet end.

7. A low dew point energy-saving low gas consumption compression heat adsorption dryer according to claim 6, characterized in that: The width of the heating plate (705) gradually decreases from the connection point with the electric heating tube (701) towards the end.

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