CN219091599U - Adsorption dryer with zero cold water consumption - Google Patents
Adsorption dryer with zero cold water consumption Download PDFInfo
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- CN219091599U CN219091599U CN202223368472.1U CN202223368472U CN219091599U CN 219091599 U CN219091599 U CN 219091599U CN 202223368472 U CN202223368472 U CN 202223368472U CN 219091599 U CN219091599 U CN 219091599U
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Abstract
The utility model relates to the field of drying systems, in particular to an adsorption dryer with zero cold water consumption, which comprises an air compressor, wherein the air compressor is respectively connected with a cooling device through a pipeline, the cooling device comprises a first cooler and a second cooler, the cooling device is connected with an adsorption tower A and an adsorption tower B through two groups of channels which are connected in parallel, a valve II and a valve III are fixed on one channel, a valve I is fixed on the other channel, the adsorption towers A and B are connected with an air outlet through pipelines, the first cooler is also connected with the second cooler through a pipeline, a blower is also fixed on the pipeline between the first cooler and the second cooler, a valve IV is fixed on the pipeline between the blower and the first cooler, and the pipeline between the adsorption tower A and the adsorption tower B is also connected with the first cooler. The device does not need to use compressed air as a cooling medium to realize cooling regeneration of the molecular sieve, and can effectively avoid loss of compressed gas.
Description
[ field of technology ]
The utility model relates to the field of drying systems, in particular to an adsorption dryer with zero cold water consumption.
[ background Art ]
Compressed air is the second most powerful energy source next to electric power in modern manufacturing industry, is a process air source with multiple purposes, and has the same importance as electric power, and the application range of the compressed air is almost all industries and departments of petroleum, chemical industry, metallurgy, electric power, machinery, light industry, textile, automobile manufacturing, electronics, food, medicine, biochemistry, national defense, scientific research and the like. The raw materials of the compressed air come from the atmosphere of our production environment, the mechanical device is utilized to compress the atmosphere to obtain continuous compressed air for us to use in all corners of the production link and even the living link, so the raw materials of the compressed air can be said to be inexhaustible, on the other hand, the raw materials of the compressed air come from free atmosphere, the atmosphere is relatively clean, the compression force (pressure) is only reduced or eliminated after the compressed air is used, the compressed air is changed into common air to be dissipated in the environment atmosphere, and the compressed air is clean energy power; although the raw materials of the compressed air are almost cost-free, the mechanical compression device for generating the compression force (pressure) also needs other energy (most commonly, the electric driving motor is used for driving the compression device to operate to generate the compressed air) to push the compression device to generate the compressed air, so the key point of energy conservation and cost reduction of the compressed air is represented by the following steps:
the efficiency of compressed air generation is known as air compressor efficiency.
The set drying and purifying targets are achieved by using the minimum external energy consumption or the minimum compressed air loss in the process of drying and purifying the compressed air.
How to rationalize the utilization of the compressed air on the production line and reduce the waste loss of the compressed air.
The compressed air can reach the pressure dew point of 2 ℃ or lower to 1 ℃ optimally by using the freeze dryer, because the temperature of the compressed air is reduced by adopting a refrigeration principle and then the moisture and the moisture in the separated air are condensed, but the temperature lower than 0 ℃ can lead the separated condensed water to freeze to block the flow of the compressed air fluid, so the dryness of the compressed air lower than the pressure dew point of 0 ℃ is realized by the adsorption dryer.
The compressed air with low dew point (the pressure dew point is less than or equal to 0 ℃) is a compressed air standard required by the utilization of modern new materials, the new manufacturing process and the new product quality standard; the compressed air dryness which can be achieved only by a cold dryer in the past is the highest cost performance choice by adding the matched use of the adsorption dryer under the requirements of technology upgrading technology and quality upgrading.
The adsorption dryer adopts the PSA principle, namely the working principle of pressurizing adsorption and depressurization desorption, and two main types of non-thermal desorption (desorption) regeneration can be adopted if the desorption is carried out according to the heat or not. And heating to release and regenerate the ceramic.
The non-thermal desorption (desorption) uses the dry air at the outlet of the drying tower as a desorption air source of the desorption regeneration tower, and has the advantages of simple structure; the disadvantage is that 14-16% of the outlet dry air is wasted as desorption air source, namely 14-16% of the compressed air generated by the air compressor is wasted, and the adsorption dryer is called a athermal regeneration type adsorption dryer.
If the heating desorption regeneration type dryer is a micro-heating regeneration type adsorption dryer which is simply provided with an electric heater, the micro-heating type dryer is generally characterized in that the electric heater is used as a heat source, the heat source heats the dry air from the adsorption drying tower to enable the part of the compressed air to be a heat carrier, the compressed air used as the heat carrier is heated by the heat source (more than or equal to 100 ℃) to form a heat fluid, the heat fluid flows from one end of the adsorption tower to the other end to blow and dry the adsorbed wet adsorbent at a high temperature under the heat exchange effect, the heat fluid flows through the adsorbent to heat the water vapor adsorbed by the adsorbent, the water is rapidly evaporated under the heat effect and then is exhausted (discharged into the ambient air) along with the heat fluid, and the process is called desorption. The compressed air serving as a heat carrier is emptied at one end of the adsorption tower to remove moisture, and meanwhile, the compressed air serving as the heat carrier is wasted; after the heating desorption is finished (i.e. the adsorbent is recovered to a dry state), the heater is not heated, the temperature of the air flow which is originally used as a heat carrier is recovered to the gas temperature (40-55 ℃) which is originally left from the adsorption tower after the heat generated by the heater is not generated, compared with the temperature of the air flow which is heated (more than or equal to 100 ℃), the temperature is 40-55 ℃, the temperature is calculated as medium normal temperature, the unheated dry air is called cold fluid because the cold fluid flows through the adsorbent, the temperature of the adsorbent is blown and cooled by the cold fluid under the heat exchange effect, and then the adsorbent is emptied (discharged into the ambient air), and after a period of blowing and cooling, the adsorbent is recovered to the normal temperature state, so that the problem of shrinkage of the pore structure of the adsorbent under the condition of high temperature is avoided. (void shrinkage reduces the adsorption capacity of the adsorbent for moisture). The waste compressed air consumed by the micro-thermal regeneration type suction drier is not as high as 14 to 16% of the athermal regeneration type, but the dry compressed air with the air intake amount of 6 to 8% is also consumed.
The micro-heat regeneration type dryer is also called an external-air-heating regeneration type dryer in which an air blower is provided in addition to an electric heater, and the external-air-heating regeneration type dryer can be classified into a micro-air-consumption external-air-heating regeneration type dryer and a zero-air-consumption (zero-loss) external-air-heating regeneration type dryer if the external-air-heating regeneration type dryer is distinguished by whether or not dry compressed air is used as a cooling fluid. The forced air external heating regeneration dryer utilizes a blower to suck normal-temperature air from the environment into a heater for heating, low-pressure (less than or equal to 1 barg) air flow formed by the blower is used as a heat carrier, and the air is from the environment atmosphere, so that the dry compressed air from a drying tower is not required to be used as the heat carrier, and precious compressed air is not wasted in the heating desorption stage. However, in the cooling stage of the adsorbent, the medium-temperature compressed air from the adsorption drying tower is required to be used as a cold carrier to form cold fluid to blow cool the heated adsorbent, and after the cold fluid for blowing takes away the heat of the adsorbent, the air is exhausted and wasted, and in general, the air blowing cooling mode is also required to waste the medium-temperature (35-55 ℃) compressed air with the air inlet amount of 3-4.5%.
A water-cooled cooler (a heat exchange device made of any type and materials) is arranged on the basis of a micro-air consumption forced air heating regeneration type dryer, low-temperature (generally less than or equal to 32 ℃) cooling water is used as a cold source, air flow generated by an air blower is used as a cold carrier to form cold fluid, the cold fluid formed in the mode is used for blowing and cooling the heated adsorbent, the air flow temperature of the cold fluid is increased under the heat exchange effect while the adsorbent is blown and cooled, then the adsorbent enters a water-cooled device such as a water-cooled cooler, the water temperature is increased under the heat exchange effect, but the temperature of the air flow is reduced again to be used as the air temperature of the cold fluid, and then the air flow enters an adsorption tower again to blow and cool the adsorbent, so that the adsorbent returns to the normal temperature under the circulating operation. The adsorption dryer which does not use compressed air as a heat carrier or a cold carrier certainly has no problem of compressed air waste, and the dryer is called a zero-air-consumption (zero-loss) forced air external heating regeneration type dryer.
Compared with other types of adsorption type dryers, the zero-air-consumption blowing external heating type adsorption type dryer almost achieves the zero-loss and zero-waste degree of compressed air in the control of the loss and waste of compressed air, but because cooling water is needed as a cold source to form cold fluid, the cooling water is inconvenient and has the problem of cooling water cost, the cooling water is needed to be not only water cost of water evaporation, but also a matched cooling water tower, a water tower fan, a circulating water pump and the like, and the operation cost is also needed to be electric energy loss.
The utility model is researched and proposed for overcoming the defects of the prior art.
[ utility model ]
The utility model aims to overcome the defects of the prior art and provides an adsorption dryer with zero cold water gas consumption.
The utility model can be realized by the following technical scheme:
the utility model discloses an adsorption dryer with zero cold water gas consumption, which comprises an air compressor, wherein the air compressor is respectively connected with a cooling device through a pipeline, the cooling device comprises a first cooler and a second cooler, the cooling device is connected with an adsorption tower A and an adsorption tower B through two groups of channels which are connected in parallel, a valve II and a valve III are fixed on one channel, a valve I is fixed on the other channel, the adsorption tower A and the adsorption tower B are both connected with an air outlet through pipelines, the first cooler is also connected with the second cooler through a pipeline, a blower is also fixed on the pipeline between the first cooler and the second cooler, a valve IV is fixed on the pipeline between the blower and the first cooler, and the pipeline between the adsorption tower A and the adsorption tower B is also connected with the first cooler. The adsorption tower A and the adsorption tower B are internally filled with one or more mixed adsorption materials (hereinafter referred to as adsorbents) capable of adsorbing moisture in compressed air, wherein the adsorption materials are used by adsorbing and drying the compressed air discharged by the air compressor through the adsorbents, the adsorbents are required to be heated and dehydrated through hot air after being saturated by water absorption, the temperature of the dehydrated adsorbents is higher, the high-temperature adsorbents cannot absorb moisture, so that the adsorbents are required to be cooled and regenerated, the compressed air discharged by the air compressor is shunted to enter the first cooler and the second cooler, air flows through the first cooler and the second cooler and then enters the adsorption tower A from the valve I for drying and adsorption, the compressed air after being adsorbed and dried is discharged to the air outlet through the one-way valve and reaches the air end, meanwhile, the valve II, the valve III and the valve V are opened, the hot air in the adsorption tower B is required to be heated and dehydrated through hot air, the hot air in the adsorption tower B enters the first cooler and the second cooler and then enters the first cooler and the second cooler and then enters the second cooler and the second cooler to be cooled, the heat in the adsorption tower B is slowly cooled and discharged through the valve B, and the heat in the adsorption tower B is recovered, and the heat in the adsorption tower is cooled and the air is cooled and discharged through the second cooler and the air is cooled and the heat in the adsorption tower B is cooled.
Preferably, a cooling dryer is also fixed on the pipeline between the air compressor and the cooling device.
Preferably, a cooling dryer is also fixed on the channel between the cooling device and the valve I.
Preferably, a one-way valve is also fixed on the pipeline between the adsorption tower A and the air outlet, and a one-way valve is also fixed on the pipeline between the adsorption tower B and the air outlet.
Preferably, a valve V is also fixed on the pipeline between the cooling device and the air outlet end of the adsorption tower B.
Compared with the prior art, the utility model has the following advantages:
1. the compressed gas is cooled by the cooling device and then enters the adsorption tower A for adsorption, and is discharged through the air outlet for use after adsorption drying, and the compressed gas is cooled and then is dried by the adsorbent, so that the influence of the temperature rise of the adsorbent on the adsorption effect can be avoided.
2. The hot air at the high-temperature adsorbent position is driven by the blower to exchange heat with low-temperature air in the cooling device, and the gas enters the adsorbent position again to perform blowing and cooling regeneration on the adsorbent after heat exchange, so that the adsorption capacity of the adsorbent is recovered, the adsorbent is not required to be regenerated in a water cooling mode, the environment area with water shortage and little water is conveniently used, the loss of water evaporation is saved, the environmental pollution caused by the cooling water tower is avoided, the electric energy loss of the cooling water tower cooling fan is avoided, and the project cost is saved without cooling water and refrigerating water circulation pipelines, and meanwhile, the occupation of space is reduced.
3. The air blower drives hot air at the high-temperature adsorbent position to exchange heat with low-temperature air in the cooling device, and the air enters the adsorbent position again to perform blowing and cooling regeneration on the adsorbent after heat exchange, so that the adsorption capacity of the adsorbent is recovered, the compressed air is not required to be used as a cooling medium to realize cooling regeneration of the adsorbent, the loss of the compressed air can be effectively avoided, and compressed air is discharged through the air outlet.
[ description of the drawings ]
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic structural view of embodiment 1;
fig. 2 is a schematic structural view of embodiment 2;
fig. 3 is a schematic structural view of embodiment 3;
in the figure: 1. an air compressor; 2. a cold dryer; 3. a dryer; 4. an inlet of the cold dryer; 5. an outlet of the cold dryer; 6. an adsorption tower A; 7. an adsorption tower B; 8. a first cooler; 9. a second cooler; 10. a valve I; 11. a one-way valve; 12. an air outlet; 13. a blower; 14. a valve II; 15. a valve III; 16. a valve IV; 17. a valve V;
[ detailed description ] of the utility model
Embodiments of the present utility model will be described in detail below with reference to the attached drawings:
example 1:
as shown in fig. 1, the utility model discloses an adsorption dryer with zero cold water consumption, wherein the adsorption dryer 3 comprises an air compressor 1, the air compressor 1 is respectively connected with a cooling device through a pipeline, the cooling device comprises a first cooler 8 and a second cooler 9, the cooling device is connected with an adsorption tower A6 and an adsorption tower B7 through two groups of parallel channels, a valve II 14 and a valve III 15 are fixed on one channel, a valve I10 is fixed on the other channel, the adsorption tower A6 and the adsorption tower B7 are both connected with an air outlet 12 through pipelines, the first cooler 8 is also connected with the second cooler 9 through a pipeline, a blower 13 is also fixed on the pipeline between the first cooler 8 and the second cooler 9, a valve IV 16 is fixed on the pipeline between the blower 13 and the first cooler 8, and the pipeline between the adsorption tower A6 and the adsorption tower B7 and the air outlet 12 is also connected with the first cooler 8. The adsorbent that the inside of adsorption tower A6 and adsorption tower B7 is provided with the adsorbent that alumina and molecular sieve formed, air compressor 1 gas is discharged through gas outlet 12 and is used after the adsorbent is absorbed water and saturated, it is required to carry out heating dehydration to the adsorbent through hot air, the temperature after the adsorbent dehydration is higher, high-temperature adsorbent can't absorb moisture, so it is required to cool and regenerate the adsorbent, the gas reposition of redundant personnel that air compressor 1 comes out is got into in cooler I8 and cooler II 9, the air current is cooled through cooler I8 and cooler II and is got into adsorption tower A6 from valve I10, dry adsorb through the adsorbent in the adsorption tower A6, the compressed air after the adsorption drying reaches the gas end through air outlet 12, simultaneously air-blower 13 starts, valve II 14, valve III 15, valve IV 16 and valve V17 are opened, the high-temperature gas that remains in the adsorption tower B7 is absorbed to the inside, with the inside of the shell of cooler I8 and cooler II 9, the heat of gas in the cooler I and the cooler 9 is got into the adsorption tower B through valve I, the heat exchanger II is taken away from the inside the adsorption tower B7 after the adsorption tower B is cooled, the heat is carried out to the adsorption tower B is cooled through the valve II, the heat is taken away from the inside the adsorption tower B7 to the inside the adsorption tower B is cooled through the valve B, the heat is cooled down by the adsorption tower B is cooled down, the heat is carried out to the adsorption tower is cooled down through the air is discharged through the valve B9, the heat recovery is realized, the heat of the adsorption tower is cooled in the adsorption tower is cooled by the adsorption tower B is cooled by the air after the adsorption tower B is cooled down, the heat is cooled by the air in the air and is cooled down, the air in the air is cooled down and the air.
Wherein, the pipeline between the adsorption tower A6 and the air outlet 12 is also fixed with a one-way valve 11, and the pipeline between the adsorption tower B7 and the air outlet 12 is also fixed with a one-way valve 11.
Wherein, a valve V17 is also fixed on the pipeline between the cooling device and the air outlet end of the adsorption tower B7.
Example 2:
as shown in fig. 2, this embodiment discloses an adsorption dryer with zero cold water and air consumption, and a cold dryer 2 is further fixed on a pipeline between the air compressor 1 and the cooling device in this embodiment based on the structure and principle of embodiment 1. The compressor machine that the air compressor machine was discharged enters into the cold drier 2 through cold drier entry 4 and cools down after drying, enters into cooling device after discharging from cold drier export 5 and cools down again, discharge through adsorption tower A6 after the cooling and use, the high temperature gas in the adsorption tower B7 carries out the heat exchange with the low temperature gas of secondary cooling in the cooling device, the difference in temperature between high temperature gas in the adsorption tower B7 and the compressed gas after the secondary cooling reaches around 100 ℃, can realize high temperature gas rapid cooling, the temperature is lower after the high temperature gas heat exchange, can realize the quick cooling of blowing to adsorbent in the adsorption tower B7.
Example 3:
as shown in fig. 3, this embodiment discloses an adsorption dryer with zero cold water and air consumption, and a cold dryer 2 is further fixed on a channel between the cooling device and the valve i 10 of this embodiment based on the structure and principle of embodiment 1.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the technical principles of the present utility model, and such changes, modifications, substitutions and alterations are also to be regarded as the scope of the utility model.
Claims (5)
1. The utility model provides an adsorption dryer of zero cold water gas consumption, includes the air compressor machine, its characterized in that: the air compressor is respectively connected with a cooling device through a pipeline, the cooling device comprises a first cooler and a second cooler, the cooling device is connected with an adsorption tower A and an adsorption tower B through two groups of channels which are connected in parallel, a valve II and a valve III are fixed on one channel, a valve I is fixed on the other channel, the adsorption tower A and the adsorption tower B are connected with an air outlet through pipelines, the first cooler is also connected with the second cooler through a pipeline, a blower is also fixed on the pipeline between the first cooler and the second cooler, a valve IV is fixed on the pipeline between the blower and the first cooler, and the pipeline between the adsorption tower B and the air outlet is also connected with the first cooler.
2. The zero cold water gas consumption adsorption dryer of claim 1, wherein: and a cold dryer is also fixed on a pipeline between the air compressor and the cooling device.
3. The zero cold water gas consumption adsorption dryer of claim 1, wherein: and a cold dryer is also fixed on the channel between the cooling device and the valve I.
4. The zero cold water gas consumption adsorption dryer of claim 1, wherein: and a one-way valve is also fixed on the pipeline between the adsorption tower A and the air outlet, and a one-way valve is also fixed on the pipeline between the adsorption tower B and the air outlet.
5. The zero cold water gas consumption adsorption dryer of claim 1, wherein: and a valve V is also fixed on a pipeline between the cooling device and the air outlet end of the adsorption tower B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223368472.1U CN219091599U (en) | 2022-12-15 | 2022-12-15 | Adsorption dryer with zero cold water consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223368472.1U CN219091599U (en) | 2022-12-15 | 2022-12-15 | Adsorption dryer with zero cold water consumption |
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| CN219091599U true CN219091599U (en) | 2023-05-30 |
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| CN202223368472.1U Active CN219091599U (en) | 2022-12-15 | 2022-12-15 | Adsorption dryer with zero cold water consumption |
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