CN119174994A

CN119174994A - A low dew point energy-saving low gas consumption compression heat adsorption dryer

Info

Publication number: CN119174994A
Application number: CN202411683263.7A
Authority: CN
Inventors: 王健; 王亚军; 林培锋
Original assignee: Fujian Ipsi Industry Co ltd
Current assignee: Fujian Ipsi Industry Co ltd
Priority date: 2024-11-22
Filing date: 2024-11-22
Publication date: 2024-12-24
Anticipated expiration: 2044-11-22
Also published as: CN119174994B

Abstract

The invention discloses a low dew point energy-saving micro air consumption compression heat dryer which comprises a main air inlet pipe, a heater and a cooler, wherein the heater and the cooler are communicated with the air inlet pipe, a proportional control valve is arranged on the main air inlet pipe, the proportion of air flow entering the heater and the cooler is regulated and controlled through the proportional control valve, a plurality of adsorbent discs are arranged in the adsorbent towers through alternating use of an adsorption tower A and an adsorption tower B, and the adsorbent discs are designed to be upwards arc-shaped bulges in the middle and upwards and downwards arc-shaped bent at the edges of the two sides, so that different adsorption areas are formed. The common micro-air consumption full-flow heating dryer heats at full flow in the regeneration stage, so that the power of a heater is greatly increased, the energy consumption is high, and the low dew point is difficult to keep continuously. By means of partial airflow heating and optimized airflow distribution, the invention can reach low dew point more easily at the same dew point and can keep the dew point low continuously.

Description

Low dew point energy-saving micro-gas consumption compression heat dryer

Technical Field

The invention relates to a low dew point energy-saving micro-air consumption compression heat dryer, belonging to the technical field of compression heat dryers.

Background

A compression heat drier is a device for reducing the moisture content of compressed air to lower dew point requirements. The drying agent is regenerated by utilizing compression heat (namely heat generated in the compression process), so that the compressed air quantity consumed in the regeneration process is greatly reduced, and the energy-saving and efficient air drying effect is realized.

The basic principle of the operation of the dryer comprises two main parts, namely an adsorption drying part and a regeneration heating part. The specific working procedure is as follows:

Adsorption drying, namely, when compressed air passes through a drying tower filled with drying agents (such as molecular sieves, activated alumina and the like), the drying agents can adsorb moisture in the air, so that the output compressed air has very low relative humidity, namely, lower dew point temperature, and the requirement of users on air quality is met.

The regeneration heating, namely the compression heat dryer is characterized in that partial compression heat is utilized to heat the drying agent in the regeneration process of the drying agent, so that moisture is accelerated to be resolved from the drying agent. Therefore, the regeneration of the drying agent can be completed under the condition that a large amount of compressed air is not used as a regeneration purge air source, and the energy consumption and the air consumption are greatly reduced. For this purpose, the apparatus is generally equipped with a heat exchanger, which can effectively collect and utilize part of the heat generated during the compression process.

In the field of compressed air drying, low dew point and energy conservation are often two relatively opposed objectives. Conventional full flow heating type micro air consumption compression heat adsorption type dryer is a typical example, and although they can reach lower dew point requirement, the power consumption on the heater is larger, resulting in lower energy efficiency. The disadvantage of this full flow regeneration method is that the regeneration effect is not ideal because the intake air temperature is not high, and it is difficult to achieve a stricter low dew point standard. To achieve a lower dew point, the plant typically needs to increase the temperature of the charge air regeneration, which in turn means a greater installed power and higher energy consumption.

In addition, in the full flow regeneration process, all air flows need to pass through the heater, so that the burden of the heater is increased, the pressure drop of the whole machine is larger, and the energy efficiency is further influenced. In contrast, although the conventional micro-gas consumption compression heat dryer can partially utilize compression heat in the regeneration stage, it is difficult to continuously maintain a low dew point under the condition of full-flow heating, and particularly, the regeneration effect is worse when the intake air temperature is low.

In the regeneration process of the traditional dryer, the consumption of the finished gas is also large, which is not only the waste of energy, but also the running cost is increased.

Therefore, the low dew point energy-saving micro-air consumption compression heat dryer which can improve the energy efficiency and reduce the energy waste while ensuring the low dew point is the aim of the research.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a low dew point energy-saving micro-air consumption compression heat dryer so as to solve the problems of the prior art.

In order to achieve the above object, the present invention is realized by the following technical scheme:

The low dew point energy-saving micro air consumption compression heat dryer comprises a main air inlet pipe, a heater and a cooler, wherein the heater and the cooler are communicated with the air inlet pipe, and a proportional control valve is arranged on the main air inlet pipe and is used for controlling the proportion of air flow entering the heater and the cooler;

The device comprises an A adsorption tower and a B adsorption tower which are arranged above a base, wherein pipe orifices below the A adsorption tower and the B adsorption tower are communicated with a cooler through a thermal regeneration air outlet pipe, an A tower regeneration air outlet valve is arranged below the A adsorption tower, a B tower regeneration air outlet valve is arranged below the B adsorption tower, and the communication state between the cooler and the A adsorption tower and the communication state between the cooler and the B adsorption tower are regulated by controlling the opening/closing states of the A tower regeneration air outlet valve and the B tower regeneration air outlet valve;

the input port of the gas-liquid separator is connected with the output port of the cooler, and the output port of the gas-liquid separator is communicated with the thermal regeneration air outlet pipe;

The pipe orifices above the A adsorption tower and the B adsorption tower are communicated with the heater through an exhaust pipe, an A tower regeneration cold blowing valve is arranged between the A adsorption tower and the heater, a B tower regeneration cold blowing valve is arranged between the B adsorption tower and the heater, and the communication state of the A adsorption tower, the B adsorption tower and the heater is regulated by controlling the opening/closing state of the A tower regeneration cold blowing valve and the B tower regeneration cold blowing valve;

the main output pipe is communicated with the A adsorption tower and the B adsorption tower, an A tower exhaust valve is arranged between the A adsorption tower and the main output pipe, a B tower exhaust valve is arranged between the B adsorption tower and the main output pipe, and the communication state of the A adsorption tower, the B adsorption tower and the main output pipe is regulated by controlling the opening/closing state of the A tower exhaust valve and the B tower exhaust valve;

The cooling blowing pipe is communicated with ports above the A adsorption tower and the B adsorption tower, one side of the cooling blowing pipe, which is close to the A adsorption tower, is provided with an A tower regeneration cooling blowing valve, one side of the cooling blowing pipe, which is close to the B adsorption tower, is provided with a B tower regeneration cooling blowing valve, and the regeneration cooling blowing air flow is controlled to be input into the A adsorption tower/B adsorption tower by switching the opening/closing states of the A tower regeneration cooling blowing valve or the B tower regeneration cooling blowing valve;

the control module is electrically connected with external power supply equipment, a heater, a cooler, a proportional control valve, an A tower regeneration air outlet valve, a B tower regeneration air outlet valve, a gas-liquid separator, an A tower regeneration cold-blowing valve, a B tower regeneration cold-blowing valve, an A tower exhaust valve, a B tower exhaust valve, an A tower regeneration cold-blowing valve and a B tower regeneration cold-blowing valve.

As a further improvement, the device also comprises a liquid storage tank which is communicated with the gas-liquid separator and used for receiving and storing the liquid separated by the gas-liquid separator.

As a further improvement, the adsorption tower A further comprises a plurality of groups of adsorbent disks longitudinally arranged in the adsorption tower A, wherein the interval between two adjacent adsorbent disks is 13-28 mm.

As a further improvement, the middle part of the adsorbent disc is upwards arc-shaped to be protruded to form a first adsorption part, the edges of the two sides of the adsorbent disc are upwards arc-shaped to be bent to form a second adsorption part, the edges of the two sides of the adsorbent disc are downwards arc-shaped to be bent to form a third adsorption part, and the second adsorption part and the third adsorption part are distributed in a staggered mode.

As a further improvement, the adsorbent disc comprises an upper disc body and a lower disc body, wherein the edge of the upper disc body is fixedly connected with the edge of the lower disc body, an interlayer is arranged between the upper disc body and the lower disc body, adsorption particles are filled in the interlayer, fine air holes are formed in the upper disc body and the lower disc body, and the aperture of each air hole is smaller than that of each adsorption particle.

As a further improvement, the upper tray body and the lower tray body are downwards provided with a plurality of arc-shaped concave structures, the concave depth of the upper tray body is smaller than that of the lower tray body, a containing space is formed by matching the arc-shaped concave structures of the upper tray body and the lower tray body, and the containing space is filled with adsorption particles.

As a further improvement, the heater further comprises an electric heating tube, an electric heating wire wound on the outer ring of the electric heating tube, a shell sleeved outside the electric heating tube and the electric heating wire, and a conductive module connected with the electric heating wire, wherein the conductive module is electrically connected with the control module.

As a further improvement, a plurality of groups of heating plates are arranged on the inner side surface of the electric heating tube around the shaft, and the heating plates are obliquely arranged towards one wind inlet end.

As a further improvement, the width of the heating plate gradually decreases from the connection part with the electric heating tube to the end part.

The beneficial effects are that:

according to the invention, the adsorption tower A and the adsorption tower B are alternately used, a plurality of adsorbent discs are arranged in the adsorption tower, and the adsorbent discs are designed to be upwards arc-shaped bulges in the middle and upwards and downwards arc-shaped bends at the edges of the two sides, so that different adsorption areas are formed.

And compressed air enters a proportional regulating valve through a main air inlet pipe, and the proportional regulating valve regulates the proportion of air flow entering the heater and the cooler according to the temperature and the flow of the air inlet.

The heated air flow and the cooled air flow enter an adsorption tower (assumed to be an A adsorption tower), and the dry air after adsorption treatment enters a main output pipe through an exhaust valve of the A tower and is further treated and then output.

The proportion regulating valve regulates the proportion of the air flow, so that the air flow with smaller proportion enters the heater, the heated air enters the regeneration tower (assumed to be the B adsorption tower) through the thermal regeneration air outlet pipe, and the adsorbent in the heating tower is used for desorbing the moisture.

After the regeneration is completed, cool air is blown into the regeneration tower (assumed to be a B adsorption tower) through a cooling pipe, the temperature of the adsorbent is lowered, and the adsorption capacity is recovered.

When the adsorption tower A reaches a saturated state, the roles of the tower A and the tower B are switched through the on-off control of the valve.

The air flow is uniformly distributed due to the design of the spacing of the adsorbent discs, so that the contact time of the air flow and the adsorbent is increased, and the adsorption effect is improved. And the airflow is continuously switched among a plurality of paths, so that the local adsorption saturation phenomenon is reduced.

Through the design of proportional control valve and adsorbent dish, reduce the resistance that the air current passes through heater and cooler, reduce the pressure drop of complete machine. Only part of the air flow is heated in the regeneration process, so that the burden of the heater is reduced, and the power consumption is reduced. And unnecessary energy consumption is reduced through dynamic control of the proportional control valve and the temperature sensor. The regeneration and the blowing and cooling processes are separated, so that the consumption of the finished gas is reduced.

The common micro-air consumption full-flow heating dryer heats at full flow in the regeneration stage, so that the power of a heater is greatly increased, the energy consumption is high, and the low dew point is difficult to keep continuously. By means of partial airflow heating and optimized airflow distribution, the invention can reach low dew point more easily at the same dew point and can keep the dew point low continuously.

When the existing design full-flow heating drier reaches the same temperature rise, larger heater power is needed, so that the installed power is large. According to the invention, the proportional regulating valve is used for controlling part of air flow to heat, so that when the same temperature rise is achieved, the actual heating power is lower, and the installed power is also lower.

The existing design has large resistance of airflow passing through the heater due to full-flow heating, so that the pressure drop of the whole machine is increased. The invention reduces the resistance of the air flow passing through the heater and the cooler and reduces the pressure drop of the whole machine by optimizing the air flow distribution and the valve control.

The existing design full-flow heating causes higher energy consumption and high operation cost. The invention has the advantages of partial air flow heating and optimized air flow path, reduced energy consumption and low operation cost.

The existing design regeneration and the blowing cooling process are carried out in a mixed mode, and the regeneration effect and the blowing cooling efficiency are affected. The invention separates the regeneration process from the blowing-cooling process, uses special heating air flow and cold air flow, improves the regeneration efficiency and the blowing-cooling effect, and prolongs the service life of the adsorbent.

The noise in the existing design cooling process is large, and the service environment of equipment is influenced. The invention reduces noise in the process of blowing cold through the silencer and provides a quieter use environment.

Through the design, the performance and the efficiency of the equipment can be obviously improved, the running cost is reduced, and the service life of the equipment is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a first view of the present invention.

Fig. 2 is a schematic diagram of a second view side view of the present invention.

Fig. 3 is a schematic structural view of a third view of the present invention.

Fig. 4 is an enlarged internal structure diagram at a in fig. 3.

Fig. 5 is a schematic cross-sectional view of a heater according to the present invention.

Fig. 6 is a schematic structural view of the fourth view of the present invention.

FIG. 7 is a schematic diagram of the installation position of a regeneration outlet valve of the A tower according to the present invention.

FIG. 8 is a schematic view showing a partially cut-away internal structure of an adsorption tower according to the present invention.

Fig. 9 is a schematic view of an exploded construction of an adsorbent tray according to the present invention.

FIG. 10 is a schematic view showing a three-dimensional structure and a partially enlarged cross-sectional structure of an adsorbent tray according to the present invention.

FIG. 11 is a schematic diagram of the connection of partial modules of a low dew point energy-saving micro-gas consumption compression heat dryer of the invention.

Fig. 12 is a schematic diagram of valve control in a shutdown state of the low dew point energy-saving micro gas consumption compression heat dryer of the present invention.

FIG. 13 is a schematic diagram of valve control for A column adsorption and B column regeneration of a low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 14 is a schematic diagram of valve control for one-stage full flow heating regeneration of the A column adsorption and B column of the low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 15 is a schematic diagram of valve control for heating and regenerating the second-stage partial flow of the A tower adsorption and B tower of the low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 16 is a schematic diagram showing the valve control of the low dew point energy-saving micro gas consumption compression heat dryer with post-heating of the A column and the B column.

FIG. 17 is a schematic diagram of valve control for A-column adsorption and B-column blowing cold regeneration of a low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 18 is a schematic diagram of valve control for A column adsorption and B column pressurization of a low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 19 is a schematic diagram showing the valve control of the A-column adsorption and B-column adsorption of the low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 20 is a schematic diagram of valve control for B-column adsorption and A-column regeneration of a low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 21 is a schematic diagram of valve control for one-stage full flow heating regeneration of the B column adsorption and A column of the low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 22 is a schematic diagram of valve control for B-column adsorption and A-column second-stage partial flow heating regeneration of a low dew point energy-saving micro-gas consumption compression heat dryer of the invention.

FIG. 23 is a schematic diagram showing the valve control of the low dew point energy-saving micro gas consumption compression heat dryer with post B column adsorption and A column heating.

FIG. 24 is a schematic diagram of valve control for B-column adsorption and A-column blowing cold regeneration of a low dew point energy-saving micro-gas consumption compression heat dryer of the invention.

FIG. 25 is a schematic diagram of valve control for B-column adsorption and A-column pressurization of a low dew point energy-saving micro gas consumption compression heat dryer of the invention.

FIG. 26 is a schematic diagram showing the valve control of the B-column adsorption and A-column adsorption of the low dew point energy-saving micro gas consumption compression heat dryer of the invention.

1. A main air inlet pipe; 2, heater, 3, cooler, 4, proportional control valve, 101, inlet temperature sensor, 102, heating outlet temperature sensor, 5, base, 6, A adsorption tower, 7, B adsorption tower, 61, A tower regeneration outlet valve, 71, B tower regeneration outlet valve, 72, heat regeneration outlet pipe, 8, gas-liquid separator, 81, liquid storage tank, 103, cooling outlet temperature sensor, 62, exhaust pipe, 63, A tower inlet valve, 73, B tower inlet valve, 64, A tower regeneration inlet valve, 74, B tower regeneration inlet valve, 66, A tower regeneration cooling valve, 76, B tower regeneration cooling valve, 11, main output pipe, 12, blow-cold pipe, 65, A tower exhaust valve, 75, B tower exhaust valve, 67, dew point instrument interface, 68, air source processor interface, 9, control module, 10, power supply equipment, 69, A tower valve, 77, B tower pressure release valve, 78, 104, blow-cold tail gas temperature sensor, 105, regeneration temperature sensor, 601, adsorbent, 602, first adsorption disk, 611, second adsorption disk, 611, 614, lower adsorption disk, 704, heating disk, electric heating wire, 703, upper adsorption disk, lower adsorption disk, and lower surface, 702.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.

In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-11, a low dew point energy-saving micro air consumption compression heat dryer comprises:

A main air inlet pipe 1, a heater 2 and a cooler 3 which are communicated with the air inlet pipe, and a proportional control valve 4 arranged on the main air inlet pipe 1, wherein the proportion of air flow entering the heater 2 and the cooler 3 is regulated and controlled by the proportional control valve 4;

the main air inlet pipe 1 is provided with an air inlet temperature sensor 101, a heating protection temperature sensor is arranged in the heater 2, and a heating outlet temperature sensor 102 is arranged at the outlet of the heater 2.

The device comprises an A adsorption tower 6 and a B adsorption tower 7 which are arranged above a base 5, wherein pipe orifices below the A adsorption tower 6 and the B adsorption tower 7 are communicated with a cooler 3 through a thermal regeneration air outlet pipe 72, an A tower regeneration air outlet valve 61 is arranged below the A adsorption tower 6, a B tower regeneration air outlet valve 71 is arranged below the B adsorption tower 7, and the communication state between the cooler 3 and the A adsorption tower 6 and the communication state between the cooler 3 and the B adsorption tower 7 are regulated by controlling the opening/closing states of the A tower regeneration air outlet valve 61 and the B tower regeneration air outlet valve 71;

a gas-liquid separator 8 with an input port connected with the output port of the cooler 3, wherein the output port of the gas-liquid separator 8 is communicated with a thermal regeneration air outlet pipe 72;

Wherein, the connection part of the cooler 3 and the gas-liquid separator 8 is provided with a cooling outlet temperature sensor 103;

The pipe orifices above the A adsorption tower 6 and the B adsorption tower 7 are communicated with the heater 2 through an exhaust pipe 62, an A tower regeneration cold blowing valve 66 is arranged between the A adsorption tower 6 and the heater 2, a B tower regeneration cold blowing valve 76 is arranged between the B adsorption tower 7 and the heater 2, and the communication states of the A adsorption tower 6 and the B adsorption tower 7 and the heater 2 are regulated by controlling the opening/closing states of the A tower regeneration cold blowing valve 66 and the B tower regeneration cold blowing valve 76;

A main output pipe 11, wherein the main output pipe 11 is communicated with an A adsorption tower 6 and a B adsorption tower 7, an A tower exhaust valve 65 is arranged between the A adsorption tower 6 and the main output pipe 11, a B tower exhaust valve 75 is arranged between the B adsorption tower 7 and the main output pipe 11, and the communication state of the A adsorption tower 6, the B adsorption tower 7 and the main output pipe 11 is regulated by controlling the opening/closing state of the A tower exhaust valve 65 and the B tower exhaust valve 75;

The side surface 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 respectively connected with an external dew point meter and an air source processor.

A cold blowing pipe 12 communicated with the ports above the A adsorption tower 6 and the B adsorption tower 7, wherein an A tower regeneration cold blowing valve 66 is arranged on one side of the cold blowing pipe 12 close to the A adsorption tower 6, a B tower regeneration cold blowing valve 76 is arranged on one side of the cold blowing pipe 12 close to the B adsorption tower 7, and the regeneration cold blowing air flow is controlled to be input into the A adsorption tower 6/B adsorption tower 7 by switching the opening/closing states of the A tower regeneration cold blowing valve 66 or the B tower regeneration cold blowing valve 76;

the control module 9 is electrically connected with the external power supply equipment 10, the heater 2, the cooler 3, the proportional control valve 4, the A tower regeneration air outlet valve 61, the B tower regeneration air outlet valve 71, the gas-liquid separator 8, the A tower regeneration air-cooling valve 66, the B tower regeneration air-cooling valve 76, the A tower exhaust valve 65 and the B tower exhaust valve 75. Wherein the control module 9 is electrically connected with the power supply device 10.

The cooling tower is characterized in that an A tower pressure release valve 69 is arranged on the A adsorption tower 6, a B tower pressure release valve 77 is arranged on the B adsorption tower 7, the cooling blowing pipe 12 is communicated with the A tower pressure release valve 69 and the B tower pressure release valve 77, a silencer 78 is further arranged on the cooling blowing pipe 12 between the A tower pressure release valve 69 and the B tower pressure release valve 77, and a cooling blowing tail gas temperature sensor 104 is arranged between the silencer 78 and the cooling blowing pipe 12.

A regeneration tail gas temperature sensor 105 is arranged on one side of the cold blowing pipe 12, which is close to the A tower regeneration cold blowing valve 66 and the B tower regeneration cold blowing valve 76.

The device also comprises a liquid storage tank 81, wherein the liquid storage tank 81 is communicated with the gas-liquid separator and is used for receiving and storing liquid separated by the gas-liquid separator.

In the use process, compressed air enters the proportional control valve 4 through the main air inlet pipe 1 in the adsorption process. The proportional control valve 4 adjusts the ratio of the air flow into the heater 2 and the cooler 3 according to the intake air temperature and flow rate.

One part of the air flow enters an adsorption tower (assumed to be an A adsorption tower 6) in an adsorption state at present after being heated by the heater 2, and the other part of the air flow enters the A adsorption tower 6 after being cooled by the cooler 3.

After adsorption treatment by the adsorption tower, the dried compressed air enters the main output pipe 11 through the A tower exhaust valve 65 and is further treated by the air source processor and then is output.

The proportion regulating valve 4 regulates the proportion of the air flow in the regeneration process, so that a smaller proportion of the air flow enters the heater 2.

The heated gas enters the adsorption tower (assumed to be the B adsorption tower 7) in the current regeneration state through the thermal regeneration gas outlet pipe 72, and the adsorbent in the adsorption tower is heated to desorb the moisture.

The regenerated gas enters the cooler 3 through the B-column regenerated gas outlet valve 71, and after cooling, the liquid is separated through the gas-liquid separator 8.

Regeneration gas is discharged through the thermal regeneration gas outlet pipe 72, and liquid enters the liquid storage tank 81 through the gas-liquid separator 8.

In the cooling process, after the regeneration is completed, the cooling pipe 12 blows cool air into the regenerated adsorption tower (assumed to be the B adsorption tower 7) through the a-tower regeneration cooling valve 66 or the B-tower regeneration cooling valve 76 to reduce the temperature of the adsorbent and restore the adsorbent to a state suitable for adsorption.

The cold blow tail gas is exhausted through the cold blow pipe 12, passes through the muffler 78 to reduce noise, and at the same time, the temperature is monitored by the regeneration tail gas temperature sensor 105.

In 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.

The A adsorption tower 6 enters a regeneration process, and the B adsorption tower 7 enters an adsorption process.

The switching of the tower body is realized by closing the A tower exhaust valve 65 and the A tower regeneration cooling valve 66, opening the A tower regeneration air outlet valve 61, closing the B tower regeneration air outlet valve 71, and opening the B tower exhaust valve 75 and the B tower regeneration cooling valve 76.

The proportional control valve 4 can dynamically adjust the heating amount according to the temperature and flow rate of the intake air by adjusting the ratio of the air flows entering the heater 2 and the cooler 3, thereby reducing unnecessary energy waste. The temperature sensor monitors the inlet air temperature, the heating outlet temperature and the cooling outlet temperature in real time, and ensures the efficient operation of the heating and cooling processes.

The temperature control system control module 9 automatically adjusts the power of the heater 2 according to the feedback of the temperature sensor, ensures that the temperature of the adsorbent bed is always in the optimal range, improves the regeneration effect, and realizes a lower dew point.

The sectional heating is carried out through the proportional regulating valve 4, so that part of air flow directly passes through the cooler 3, the burden of the heater 2 is reduced, and the power consumption is reduced.

In the regeneration process of optimizing the regeneration process, the temperature and the flow of the regeneration gas are ensured by adjusting the air flow proportion, the regeneration efficiency is improved, and the time and the energy required by regeneration are reduced.

The resistance of the air flow is reduced by optimizing the air flow distribution and valve control, and the resistance of the air flow passing through the heater 2 and the cooler 3 is reduced, so that the pressure drop of the whole machine is reduced.

The adsorption towers 6 and 7 are alternately used in the multi-tower design, so that the adsorption towers can be switched in time when reaching a saturated state, and the pressure drop increase caused by long-time high-load operation is avoided.

In the regeneration and blowing-cooling separation regeneration process, the air flow heated by the heater 2 is only used for regeneration, and the cold air flow is used in the blowing-cooling process, so that the consumption of the finished product air is reduced.

And the noise in the process of blowing cold is reduced through the silencer 78 by the silencer 78 and the temperature sensor monitors the temperature of the tail gas of blowing cold, so that the efficiency of the process of blowing cold is ensured.

By optimizing the heating and cooling process at low dew points, the regeneration effect of the adsorbent is ensured, thereby achieving lower dew points. The high energy efficiency reduces unnecessary energy waste and improves the energy efficiency of the whole machine through dynamic control of the proportional control valve 4 and the temperature sensor. The low pressure drop optimizes the airflow distribution and valve control, reduces the resistance of the airflow through the heater 2 and cooler 3, and reduces the pressure drop. Low operating costs reduce operating costs by reducing product gas consumption and reducing power consumption.

Wherein, the main air inlet pipe 1 is provided with a proportion regulating valve 4 for regulating and controlling the proportion of the air flow entering the heater 2 and the cooler 3.

The conventional working condition is that the heating air flow proportion is 35-45%, the cooling air flow proportion is 55-65%, and the air inlet temperature is 15-30 ℃.

The low temperature working condition is that the heating air flow proportion is 55-65%, the cooling air flow proportion is 35-45%, and the air inlet temperature is 0-15 ℃.

The high temperature working condition is that the heating air flow proportion is 25-35%, the cooling air flow proportion is 65-75%, and the air inlet temperature is 30-45 ℃.

The heating airflow proportion is 65-75% and the cooling airflow proportion is 25-35% under the extremely low temperature working condition, and the device is suitable for the air inlet temperature of minus 15 ℃ to 0 ℃.

The heating airflow proportion is 20-30% and the cooling airflow proportion is 70-80% under the extreme high temperature working condition, and the air inlet temperature is 45-60 ℃.

The control algorithm adopts a PID control algorithm or other advanced control strategies, and dynamically adjusts the opening of the proportional control valve 4 according to the air inlet temperature and the flow.

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

And a heating outlet temperature sensor 102 for monitoring the temperature of the heated gas and ensuring the heating effect.

And a cooling outlet temperature sensor 103 for monitoring the temperature of the cooled gas and ensuring the cooling effect.

In the low dew point energy-saving type micro gas consumption compression heat dryer, the internal designs of the A adsorption tower 6 and the B adsorption tower 7 are the same. Particularly, considering the spacing between the adsorbent trays 601, the adsorption tower A further comprises a plurality of groups of adsorbent trays 601 which are longitudinally arranged in the adsorption tower A6, and the spacing interval between two adjacent adsorbent trays 601 is 13mm-28mm.

For uniform gas flow distribution, the spacing between the adsorbent disks 601 is between 13mm and 28mm, which ensures uniform gas flow distribution within the column. If the spacing is too small, the air flow may form a "short circuit" and most of the air flow may be concentrated in some paths, resulting in uneven air contact between the sorbent discs 601, affecting the drying effect.

If the spacing is too large, the gas flow path in the tower body is too long, which increases the pressure drop, reduces the energy efficiency of the device, and may cause insufficient contact between part of the gas flow and the adsorbent, and also affects the drying effect. Ensuring that there is sufficient residence time between each sorbent disk 601 for the sorbent to adequately adsorb moisture. The method not only improves the utilization rate of the adsorbent, but also prolongs the working time of the adsorption tower and reduces the regeneration frequency.

At the same time, the spacing design ensures uniform contact of the gas flow between each sorbent disk 601, avoiding problems of premature saturation or insufficient local adsorption of the local sorbent disk 601.

When the spacing between the adsorbent discs 601 is too small, the resistance to gas flow through is increased, resulting in an increase in pressure drop. The moderate spacing can balance the air flow resistance and the air flow distribution uniformity, reduce the pressure drop and improve the energy efficiency of the equipment.

During regeneration, the heated gas stream needs to be uniformly passed through the adsorbent disk 601 to ensure that the adsorbent is able to adequately desorb moisture. The moderate spacing ensures the residence time of the heated gas stream between each adsorbent disk 601, enhancing the regeneration effect.

When the pitch of the adsorbent discs 601 is 13mm, this is the minimum pitch between the adsorbent discs 601. At this spacing, the uniformity of the gas flow distribution is better, but a lower pressure drop is still ensured. The method is suitable for the working conditions of higher air inlet temperature and lower flow.

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

In addition, the low-temperature air inlet has lower air inlet temperature and higher adsorption capacity of the adsorbent at high pressure, and the interval can be properly reduced to improve the adsorption effect and the air flow distribution uniformity (recommended interval is 13-18 mm).

And when the high-temperature intake air is at a higher intake air temperature and at a lower pressure, the adsorption capacity of the adsorbent is weaker, and the spacing can be appropriately increased to reduce the pressure drop and ensure sufficient contact of the air streams (recommended spacing 23mm-28 mm).

Wherein the adsorption is carried out at a low temperature and high pressure, and the adsorption process is generally carried out at a low temperature (for example, 20-30 ℃).

The adsorption process is generally carried out at relatively high pressures (e.g. 7-10 bar).

High temperature low pressure regeneration, the regeneration process is typically performed at a higher temperature (e.g., 150 ℃ to 200 ℃). The regeneration process is typically carried out at a lower pressure (e.g., 0.5-1 bar).

During the adsorption process, the air flow speed is higher due to higher air flow pressure during the adsorption process at low temperature and high pressure. The proper spacing can ensure the uniform distribution of the air flow in the adsorption tower, and avoid uneven adsorption caused by local overcurrent.

During high-temperature low-pressure regeneration, the air flow speed is slower due to the higher air flow temperature and lower pressure in the regeneration process. Proper spacing can ensure the uniform distribution of the heating air flow in the adsorption tower, avoid local overheating and improve the regeneration efficiency.

Through the design of the spacing, the utilization rate of the adsorbent can be maximized, and in the adsorption process, the proper spacing can ensure the residence time of the air flow between each adsorbent tray 601, so that the adsorbent can fully adsorb moisture, and the utilization rate of the adsorbent is improved.

In the regeneration process, the moderate spacing can ensure uniform contact of the heating air flow between each adsorbent disk 601, so that the adsorbent can fully desorb moisture, and the regeneration effect is improved.

Higher pressures result in greater pressure drops during adsorption. Proper spacing can reduce resistance to airflow through and pressure drop.

During regeneration, lower pressure means less resistance to the passage of air flow. The moderate spacing can further reduce the pressure drop and improve the energy efficiency of the system.

For example, consider 1. Adsorption conditions, temperature 20 ℃ to 30 ℃, pressure 7 to 10bar, recommended spacing 15mm to 20mm.

2. The regeneration condition is that the temperature is 150-200 ℃, the pressure is 0.5-1bar, and the recommended spacing is 23-28 mm.

In order to maximize the utilization rate of the adsorbent, the middle part of the adsorbent tray 601 is protruded upwards in an arc shape to form a first adsorption part 602, edges of two sides of the adsorbent tray 601 are bent upwards in an arc shape to form a second adsorption part 603, edges of two sides of the adsorbent tray 601 are bent downwards in an arc shape to form a third adsorption part 604, and the second adsorption part 603 and the third adsorption part 604 are distributed in a staggered manner.

Because of the adsorption state in the adsorption tower, the air flow is from bottom to top, and thus, the two groups of raised second adsorption areas formed below the adsorbent tray 601 can also be used for splitting and two groups of recessed third adsorption areas and the middle first adsorption area, when viewed from the bottom.

The adsorbent tray 601 includes an upper tray body 611 and a lower tray body 612, the edges of the upper tray body 611 and the lower tray body 612 are fixedly connected, an interlayer is arranged between the upper tray body 611 and the lower tray body 612, adsorption particles 613 are filled in the interlayer, fine ventilation holes are formed in the upper tray body 611 and the lower tray body 612, and the hole diameters of the ventilation holes are smaller than the hole diameters of the adsorption particles 613. For fixing the adsorption particles 613 without being separated from the adsorbent disk 601.

The middle portion of the adsorbent disk 601 is convex upward in an arc shape to form a first adsorption portion 602, and the convex design of the middle portion can increase the surface area of the adsorbent disk 601 and provide more adsorption sites. When the air flow passes through the raised area in the middle part, the air flow is forced to be more uniformly distributed, the contact time of the air flow and the adsorbent is increased, and the adsorption efficiency is improved.

The edges of the two sides of the adsorbent disk 601 are bent upwards in an arc shape to form a second adsorption part 603, and the design that the edges of the two sides are bent upwards also increases the surface area of the adsorbent disk 601, so that more adsorption sites are provided. The device can also play a role in splitting, divide the air flow into a plurality of streams, reduce the possibility of short circuit of the air flow and ensure that the air flow is distributed more uniformly in the adsorption tower.

The edges of the two sides of the adsorbent tray 601 are bent downwards in an arc shape to form a third adsorption portion 604, and the downward bent design of the edges of the two sides forms a concave area, so that the surface area of the adsorbent tray 601 is increased. The concave area can capture more air flow, further improves the contact efficiency of the air flow and the adsorbent, reduces the straight-through path of the air flow, and increases the adsorption effect.

The second adsorption parts 603 and the third adsorption parts 604 are arranged in a staggered manner, so that the air flow can be continuously switched among a plurality of paths when passing through the adsorption tower, and the path length and the contact time of the air flow are increased. The adsorption capacity of the adsorbent can be utilized to the maximum extent, the local adsorption saturation phenomenon is reduced, and the overall adsorption effect and the utilization rate of the adsorbent are improved.

By the design of the protrusions and the bends, the surface area of the adsorbent disk 601 is greatly increased, providing more adsorption sites, thereby improving the adsorption efficiency of the adsorbent. The design of the bulges and the bends ensures that the air flow is distributed more uniformly in the adsorption tower, thereby avoiding local overcurrent or short circuit and ensuring that each adsorption area can be fully utilized. And the upward arc bending design of the second adsorption part 603 can play a role in splitting, divide the air flow into a plurality of streams, reduce the resistance of the air flow in the adsorption tower and reduce the pressure drop. By the downward arcuate bend design of the third adsorption portion 604, the airflow path is optimized, reducing drag during airflow passage, and further reducing pressure drop.

The convex and bent structures designed on the adsorbent tray 601 make the load of the air flow in the adsorption tower more uniform, reduce the premature saturation of the local adsorbent tray 601 and prolong the service life of the adsorbent. In the regeneration process, the design is also beneficial to the uniform distribution of the air flow, improves the regeneration efficiency of the heating air flow, ensures that the adsorbent can thoroughly desorb moisture and recover the adsorption performance.

When the air flow passes through the adsorption tower, the air flow can be continuously switched among a plurality of paths, so that the contact time of the air flow and the adsorbent is increased, and the drying effect is improved. Through uniform distribution and multipath contact, moisture in the airflow can be absorbed more thoroughly, moisture residues are reduced, and the quality of the final drying gas is improved.

The upper tray body 611 and the lower tray body 612 are provided with a plurality of arc-shaped concave structures downwards, the concave depth of the upper tray body 611 is smaller than that of the lower tray body 612, a containing space 614 is formed by matching the arc-shaped concave structures of the upper tray body 611 and the lower tray body 612, and the containing space 614 is filled with adsorption particles 613. The upper plate 611 and the lower plate 612 are connected by bolting or clamping. In the adsorption state, the air flow is input from bottom to top, and the concave structure of the lower disc 612 forms a protrusion on the windward side, so that the air flow can be introduced into the interior while being guided.

To increase the uniformity of the filling of the adsorbent, a plurality of evenly distributed accommodating spaces 614 are formed by the cooperation of the arc-shaped concave structures of the upper and lower tray bodies 612, so that the adsorbent particles 613 can be ensured to be more uniformly filled in each space.

The concave structure of the lower tray 612 forms a windward protrusion, so that the air flow can be guided into each accommodating space 614, and the distribution of the air flow in the adsorption tower is ensured to be more uniform. The short circuit phenomenon of the air flow in the adsorption tower can be reduced, the air flow can be ensured to fully contact the adsorption particles 613, and the adsorption efficiency is improved.

Through the design of the arc indent structure, the contact area of the adsorption particles 613 and the air flow is increased, and the utilization rate of the adsorbent is improved. When the air flow passes through the plurality of accommodating spaces 614, the path is optimized, the contact time of the air flow and the adsorbent is increased, and the adsorption effect is further improved.

The upper tray body 611 and the lower tray body 612 can be connected by means of bolt fixing or clamping fixing, and the like, so that the installation and maintenance of the adsorption tower are facilitated, and the adsorbent can be quickly detached and replaced. The combination of the two can be regarded as a module, and the modularized design enables the maintenance and the overhaul of the adsorption tower to be more convenient.

The air flow is uniformly guided into each accommodating space 614 by the protrusions formed by the concave structure of the lower tray 612, so that the air flow is ensured to be fully contacted with the adsorbent, and the adsorption efficiency is improved. The arc-shaped concave structure increases the exposed area of the adsorption particles 613 and improves the utilization rate of the adsorbent.

The optimized airflow path reduces the resistance of airflow passing through the adsorption tower, so that the pressure drop of the whole machine is reduced, the airflow is uniformly distributed in the adsorption tower, the local overcurrent phenomenon is reduced, and the unnecessary pressure drop increase is avoided.

During regeneration, the concave structure of the lower disc 612 can uniformly guide the air flow into each accommodating space 614, so as to improve the distribution uniformity of the regeneration gas, thereby improving the regeneration efficiency. Through the diversion design, the temperature distribution of the regenerated gas is more uniform, the local overheating phenomenon is reduced, and the thorough desorption and the recovery of the adsorption performance of the adsorbent are ensured.

Because the air flow is distributed more uniformly in the adsorption tower, the premature saturation of the local adsorbent is reduced, and the service life of the adsorbent is prolonged. The temperature distribution in the regeneration process is uniform, the thermal damage of the adsorbent is reduced, and the service life of the adsorbent is further prolonged.

Conventional adsorption towers generally adopt a flat plate type adsorbent disk 601, so that the air flow is unevenly distributed, and local overcurrent or short circuit phenomenon is easy to occur, thereby influencing the adsorption effect. Through the design of arc indent structure, the distribution of air current in the adsorption tower is more even, has improved adsorption efficiency and stability.

The adsorbent in the traditional design has lower utilization rate, and local adsorption saturation is easy to occur, so that the overall adsorption effect is reduced. By increasing the contact area of the adsorbent and optimizing the airflow path, the utilization rate of the adsorbent is improved, and higher adsorption efficiency is realized.

In the traditional design, the resistance of the airflow passing through the adsorption tower is larger, so that the pressure drop is higher, and the energy efficiency of the system is affected. By reducing the air flow resistance and optimizing the air flow path, the pressure drop of the whole machine is obviously reduced, and the energy efficiency of the system is improved.

In the regeneration process of the traditional design, the air flow is unevenly distributed, so that the phenomenon of local overheating or incomplete regeneration is easy to occur, and the regeneration effect is influenced. By optimizing the regeneration air flow distribution, the temperature and flow of the regeneration air are ensured to be more uniform, the regeneration efficiency is improved, and the time and energy required by regeneration are reduced.

The sorbent disk 601 in the conventional design is not easily removable and replaceable and has high maintenance costs. Through modularized design and convenient connection mode, maintenance and replacement cost is reduced, and equipment reliability is improved.

Through the cooperation of the arc-shaped concave structures of the upper tray body 612 and the lower tray body, a plurality of evenly-distributed accommodating spaces 614 are formed, and the distribution of air flow and the filling of the adsorbent are optimized, so that the adsorption efficiency is improved, the pressure drop is reduced, the service life of the adsorbent is prolonged, and the maintenance and the replacement are convenient. Compared with the traditional design, the design has obvious advantages in the aspects of airflow distribution, adsorbent utilization rate, pressure drop, regeneration efficiency, maintenance convenience and the like.

The selection of the appropriate adsorbent particle 613 material is critical to the performance and efficiency of the adsorption column. The following are some common adsorbent particle 613 materials and their characteristics:

Activated alumina features:

High adsorption capacity, that is, active alumina has high water vapor adsorption capacity, especially in high humidity condition.

The low pressure drop, the regular structure of the active alumina particles, low wind resistance, and is suitable for high flow systems.

The mechanical strength is good, the pressure resistance and the abrasion resistance are high, and the service life is long.

The regeneration performance is good, and the adsorption performance can be recovered by regenerating in a heating or blowing mode.

The method is widely applied to the fields of compressed air drying, gas purification and the like.

2. Molecular sieve

The characteristics are as follows:

the molecular sieve has specific pore diameter, and can absorb molecules with different sizes, such as water molecules, carbon dioxide molecules and the like, in a targeted manner.

High adsorption efficiency, high adsorption speed, high adsorption capacity and better performance under low humidity condition.

Good thermal stability, high temperature resistance and suitability for high temperature regeneration.

The porous structure is internally porous, so that the contact area with the air flow is increased, and the adsorption effect is improved.

The method is applicable to occasions with high precision requirements such as compressed air deep drying, gas separation, purification and the like.

3. Activated carbon

The characteristics are as follows:

The adsorption range is wide, and various organic and inorganic gases such as moisture, oil, peculiar smell and the like can be adsorbed.

The porous structure inside the porous material has high specific surface area, great specific surface area and high adsorption capacity.

The chemical property is stable, is not easy to react with other substances, and is suitable for various gas environments.

The regeneration performance is better, and the adsorption performance can be recovered by heating or steam regeneration.

The method is widely used for occasions such as gas purification, air purification, solvent recovery and the like.

In this embodiment, the adsorbent particles 613 are molecular sieves.

The heater 2 comprises an electric heating tube 701, an electric heating wire 702 wound on the outer ring of the electric heating tube 701, a shell 703 sleeved outside the electric heating tube 701 and the electric heating wire 702, and a conductive module 704 connected with the electric heating wire 702, wherein the conductive module 704 is electrically connected with the control module 9. A plurality of groups of heating plates 705 are arranged on the inner side surface of the electric heating tube 701 around the shaft, the heating plates 705 are obliquely arranged towards one wind inlet end, and the width of the heating plates 705 gradually reduces from the joint with the electric heating tube 701 towards the end part.

Electrothermal tube 701 is the main heating element of heater 2, generating heat by the thermal effect of electric current.

Heating wire 702 the heating wire 702 of winding in the outer loop of electrothermal tube 701 has further increased the heating area, has improved thermal efficiency.

Housing 703, which fits over the exterior of electrical heating tube 701 and heating wire 702, protects the heating element from heat loss and directs the air flow through heater 2.

The conductive module 704 is connected with the heating wire 702 and is electrically connected with the control module 9, so that fine control on the heating process is realized.

The heating plate 705 is disposed obliquely, and the heating plate 705 is disposed obliquely toward the wind inlet end, which is helpful for guiding and guiding the air flow and reducing the resistance of the air flow passing through the heater 2.

The width of the heating plate 705 gradually decreases from the connection with the electric heating tube 701 toward the end, so that the blocking of the air flow by the heating plate 705 gradually decreases, and the air flow can be more uniformly distributed in each area of the heater 2.

In this embodiment, 3-4 heating sheets 705 are provided in one group, and the heating sheets 705 between adjacent groups are arranged in a staggered manner. And the heater chip 705 between the adjacent groups is spaced 10mm-15mm apart. In this example a 15mm pitch arrangement is used.

By arranging a plurality of groups of heating plates 705 around the shaft on the inner side surface of the electric heating tube 701, the heating area is increased, the heat efficiency is improved, and the air flow can reach the required temperature more quickly. The heating wire 702 is wound on the outer ring of the electric heating tube 701, so that the heating area is further increased, and the overall heating efficiency is improved.

By the inclined arrangement and the gradually decreasing width of the heating plate 705, the air flow can more smoothly pass through the heater 2, and the resistance of the air flow to slow flow through the heater 2 is reduced, thereby reducing the pressure drop of the heater 2.

The optimized airflow distribution reduces the local overcurrent phenomenon and avoids unnecessary pressure drop increase.

Through the optimized designs of the heating plate 705 and the heating wire 702, the regeneration gas can be heated more uniformly, the temperature distribution of the adsorbent in the regeneration process is ensured to be more uniform, and the regeneration efficiency is improved.

The heater 2 in the conventional design is not uniform enough in air flow distribution, and a local overcurrent phenomenon is easy to occur, so that the heating effect is influenced. By the inclined arrangement of the heating plate 705 and the design of gradually narrowing width, the air flow distribution is optimized, the resistance of the air flow passing through the heater 2 is reduced, and the uniformity and the high efficiency of the heating process are ensured.

The heater 2 in the conventional design is easy to cause high pressure drop due to uneven air flow distribution, and the energy efficiency of the system is affected.

By reducing the air flow resistance, the pressure drop of the heater 2 is obviously reduced, and the overall energy efficiency of the system is improved.

By adding a plurality of groups of heating plates 705 in the electric heating tube 701, and arranging the heating plates obliquely and gradually reducing the width, the air flow distribution and the thermal efficiency of the heater 2 are optimized, the pressure drop is obviously reduced, the regeneration efficiency is improved, and the service life of the heater 2 is prolonged. Compared with the traditional design, the design has obvious advantages in the aspects of heat efficiency, air flow distribution, pressure drop, temperature control, regeneration efficiency, service life and the like, and is suitable for an adsorption tower system which needs high efficiency, low energy consumption and long service life.

Referring to fig. 12 to 26, in the above dryer, the method for operating the low dew point energy-saving micro gas consumption compression heat adsorption dryer comprises the steps of:

S1, a standby state;

the system state is that normally open valves (V1, V2, V9, V10 and V13) of the adsorption tower A6 and the adsorption tower B7 are kept open so as to keep the stability of the system and a preset airflow channel.

And in the air flow state, the basic working state of the equipment is maintained through natural air flow, and the system is in a low-energy consumption standby mode, so that the system is suitable for subsequent operation requirements.

S2, starting adsorption by an adsorption tower 6;

in the system state, the adsorption tower 6 starts to adsorb moisture in the air, and the adsorption tower 7 is in a state to be regenerated.

Valve operation, closing V2 (inlet valve of B adsorption tower 7);

Closing V10 (B gas outlet valve of adsorption tower 7)

Gas flow state avoiding invalid gas flow through the B adsorption tower 7.

S3, the adsorption tower 6 finishes adsorption, and the adsorption tower 7 is heated and regenerated;

In the system state, the adsorption tower 6 finishes adsorption, and the adsorption tower 7 carries out heating regeneration.

Valve operation, namely opening V6 (a regeneration air inlet valve of the B adsorption tower 7) and opening V8 (a regeneration air outlet valve of the B adsorption tower 7);

The V13 proportional control valve 4 is closed with a delay (the delay time is adjustable to optimize the air flow and energy transfer);

And the air flow state is that the air flow path and the temperature are regulated by controlling the accurate switch of the valve, so that the effective regeneration process is ensured, and the energy consumption is reduced.

And the heater 2 is in a state that the heater 2 is turned off, and full-flow heating regeneration is adopted.

S4, the adsorption tower 6 is adsorbed and maintained, and the second-stage partial flow of the adsorption tower 7 is heated and regenerated;

in the system state, the adsorption tower 6 is kept in the adsorption state, and the adsorption tower 7 enters the second-stage partial flow for heating and regeneration.

The valve operation is that the V13 proportional control valve 4 is opened to realize accurate air flow adjustment;

the air flow state is that the low-energy operation of the system is maintained by a partial flow heating mode.

S5, the adsorption tower 6 is adsorbed and maintained, and the adsorption tower 7 is heated and delayed;

In the system state, the adsorption tower 6 is kept in the adsorption state, and the regeneration of the adsorption tower 7 needs to be heated in a delayed manner.

Valve operation, namely opening a V6 valve, opening a V8 valve and closing a V13 valve in a delayed manner (the delay time is adjustable, and the use of heat energy is optimized);

and in the air flow state, energy is not wasted in the adsorption process of the A adsorption tower 6, and the system achieves the energy-saving effect.

S6, the adsorption process of the adsorption tower A6 is continuous, and the adsorption tower B7 is subjected to blowing cooling regeneration;

in the system state, the adsorption process of the adsorption tower A6 is continuous, and the adsorption tower B7 performs blowing cooling regeneration.

The valve operation comprises the steps of firstly opening a V13 valve, controlling air flow to enter, closing a V6 valve in a delayed manner, closing a V8 valve in a delayed manner, opening a V12 valve for pressure relief, and finally opening a V4 valve to further finish the regeneration cooling process;

And the air flow state is controlled by an accurate valve, so that the stable transition of temperature and pressure is ensured, and the excessive energy consumption is avoided.

S7, in the later adsorption stage of the adsorption tower 6, the pressurizing stage of the adsorption tower 7 is carried out;

in the system state, the adsorption tower 6 is in the later stage of the adsorption stage, and the adsorption tower 7 begins to be pressurized.

Valve operation V12 valve closing

And the air flow state is that the air flow of the system is stable, and the waste of energy sources in the pressurizing process is avoided.

S8, an adsorption tower switching process;

in the system state, the adsorption tower A6 and the adsorption tower B7 enter an adsorption switching process.

Valve operation, V1 valve closed, V9 valve closed, V2 valve closed, V10 valve closed;

the V13 valve being kept open or adjusted as required

And the air flow state is controlled by an accurate valve, so that the optimal adsorption effect is maintained, and the drying effect and the high-efficiency operation of the system are ensured.

S9, maintaining the adsorption of the adsorption tower B7, and regenerating the adsorption tower A6

In the system state, the adsorption tower 7 is kept in an adsorption state, and the adsorption tower 6 enters a state to be regenerated.

Valve operation, wherein the V1 valve is closed, and the V9 valve is closed;

the gas flow state is to avoid unnecessary gas flow to the A adsorption tower 6.

S10, heating and regenerating the adsorption tower 6;

In the system state, the adsorption tower 6 enters a heating regeneration stage.

Valve operation, opening V5 (regeneration air inlet valve of A adsorption tower 6);

opening V7 (a regeneration air outlet valve of the A adsorption tower 6), and closing the V13 valve in a delayed manner (the delay time is adjustable so as to optimize air flow and energy transmission);

S11, heating and regenerating the second-stage partial flow of the adsorption tower 6A;

In the system state, the adsorption tower 6 enters a second-stage partial flow for heating and regeneration.

And in the air flow state, energy waste is reduced by a partial flow heating mode, and energy efficiency is improved.

S12, heating and delaying the adsorption tower 6;

system state a regeneration of the adsorption tower 6 requires delayed heating.

Valve operation, namely opening a V5 valve firstly;

V7 valve is opened first, V13 valve is closed in time delay (time delay is adjustable, achieve the purpose of energy saving)

And the stability of the system is maintained by closing the V13 valve in a delayed manner.

S13A adsorption tower 6 blowing cold regeneration

In the system state, the adsorption tower 6 performs blowing cooling regeneration.

The valve operation comprises the steps of firstly opening a V13 valve, controlling air flow to enter, closing a V5 valve in a delayed manner, closing a V7 valve in a delayed manner, opening a V11 valve for pressure relief, and finally opening a V3 valve to finish cold blowing regeneration;

the air flow state is controlled by a precise valve, so that the temperature and pressure control is optimized, and the minimum energy consumption is ensured.

S14, in the later adsorption stage of the B adsorption tower 7, the A adsorption tower 6 is pressurized

In the system state, the adsorption tower 7 is in the later adsorption stage, and the adsorption tower 6 begins to be pressurized.

Valve operation, V11 valve closing;

The air flow state is controlled by an accurate valve, so that the change of air flow and pressure is more stable, and the loss of compressed air is further reduced.

S15, finishing switching of the adsorption tower;

and in the system state, after the adsorption of the adsorption tower B7 is completed, the adsorption tower A6 maintains the adsorption state, and one round of adsorption regeneration cycle is completed.

Valve operation, wherein the V1 valve is opened, the V9 valve is opened, the V2 valve is closed, the V10 valve is closed, and the V13 valve is adjusted according to the requirement;

and the air flow state is controlled by an accurate valve, so that stable switching of air flow and pressure is ensured, and the high-efficiency operation of the system is maintained.

Wherein, V1 is a tower exhaust valve 65, V2 is a tower exhaust valve 75, V3 is a tower regeneration cold-blowing valve 66, V4 is a tower regeneration cold-blowing valve 76, V5 is a tower heat regeneration air inlet valve, V6 is a tower heat regeneration air inlet valve, V7 is a tower heat regeneration air outlet valve, V8 is a tower heat regeneration air outlet valve, V9 is a tower air inlet valve 63, V10 is a tower air inlet valve 73, V11 is a tower pressure relief valve 69, V12 is a tower pressure relief valve 77, V13 is a proportion regulating valve 4, T1 is an inlet temperature, T2 is a cooler 3 outlet temperature, T3 is a cold-blowing tail gas temperature, T4 is a regeneration tail gas temperature, T5 is a heating protection temperature, T6 is a heating outlet temperature, T7 is an outlet temperature, and T8 is a dew point temperature.

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 arrangement of the power mechanism, the power supply system, the control system, etc. of the device is not completely described, and on the premise that the person skilled in the art understands the principle of the present invention, the specific details of the power mechanism, the power supply system and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art;

The standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the drawings, the specific connection modes of the parts are conventional means such as mature bolts, rivets and welding in the prior art, the machines, the parts and the equipment are conventional models in the prior art, and the structures and the principles of the parts are all known by the skilled person through technical manuals or through conventional experimental methods. The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle 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 it comprises:

A main air intake pipe (1), a heater (2) and a cooler (3) connected to the air intake pipe, and a proportional control valve (4) disposed 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).

2. A low dew point energy-saving low gas consumption compression heat adsorption dryer according to claim 1, characterized in that it also includes a liquid storage tank (81), the liquid storage tank (81) is connected to the gas-liquid separator (8), and receives and stores the liquid separated by the gas-liquid separator (8).

3. A low dew point energy-saving low gas consumption compression heat adsorption dryer according to claim 1, characterized in that it also includes a plurality of groups of adsorbent disks (601) longitudinally arranged inside the A adsorption tower (6), and the distance between two adjacent adsorbent disks (601) is in the range of 13mm-28mm.

4. According to claim 3, a low dew point energy-saving low gas consumption compression heat adsorption dryer is characterized in that: the middle part of the adsorbent disk (601) is arc-shaped and protrudes 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), and the second adsorption part (603) and the third adsorption part (604) are arranged alternately.

5. A low dew point energy-saving low gas consumption compression heat adsorption dryer according to claim 4, characterized in that: the adsorbent disk (601) includes 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), and the aperture of the air holes is smaller than the aperture of the adsorbent particles (613).

6. A low dew point energy-saving low gas consumption compression heat desiccant according to claim 5, characterized in that: the upper disk (611) and the lower disk (612) are provided with a plurality of arc-shaped concave structures downward, the concave depth of the upper disk (611) is smaller than that of the lower disk (612), and a accommodating space (614) is formed by the arc-shaped concave structures of the upper disk (611) and the lower disk (612), and adsorption particles (613) are filled in the accommodating space (614).

7. A low dew point energy-saving low air consumption compression heat desiccant according to claim 1, characterized in that: the heater (2) also includes an electric heating tube (701) for passing airflow, a 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 heating wire (702), and a conductive module (704) connected to the heating wire (702), and the conductive module (704) is electrically connected to the control module (9).

8. A low dew point energy-saving low air consumption compression heat absorption dryer according to claim 7, 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 inclined toward the air inlet end.

9. A low dew point energy-saving low gas consumption compression heat absorption dryer according to claim 8, characterized in that the width of the heating plate (705) gradually decreases from the connection with the electric heating tube (701) toward the end.