Using alternative types of energy in the process of regeneration of the adsorbents

Содержание

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❷ Water is present in the atmosphere. It is pumped by


Water is present in the atmosphere. It is pumped by compressors

into the pneumatic
systems.

Related
humidity, %

Temperature, C

Litres / day

Intake of moisture at suction flow rate 250 m3/h and outlet pressure 8 bar.

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❸ Rusting of pipes and Equipment breakdowns Inability to provide technological


Rusting of pipes and
Equipment breakdowns

Inability
to provide technological processes

Freezing pipes
and

idle production

Water is present in the atmosphere. It is pumped by compressors into the pneumatic
systems.

AIR COMPRESSOR

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❹ Long-term resource of equipment and communications Maintenance of modern technological


Long-term resource of equipment and communications

Maintenance of modern technological processes

Reducing
production

costs
and increasing productivity

Water is present in the atmosphere. It is pumped by compressors into the pneumatic
systems.

The use of separators, filters and dryers solves these problems

AIR COMPRESSOR

AIR DRYER

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❺


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❶ ❻



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❼ A dryer is an typre of equipment, that consumes compressed


A dryer is an typre of equipment, that
consumes compressed air.


Reducing the amount of compressed air, used to adsorbent regeneration, is a challenge that must be addressed to reduce
the cost of air production.

UP TO 20 % AIR LOST

WET AIR

DRY AIR

Blowing
purge air losses

Water
removal losses

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❽ Adsorption columns of the dryer and their cyclic functioning. Being


Adsorption columns of the dryer
and their cyclic functioning.

Being dryed air

Purge

air, temperature 200 0С

Dry air

Adsorbtion
column “B”

AIR DRYER

Adsorbtion
column “A”

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❾ The design of the adsorption dryer should ensure efficient heating


The design of the adsorption dryer should ensure efficient heating

of the adsorbent and its subsequent cooling.
In the construction of the dryers uses:

This complicates the design and increases the cost of the dryer.

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❶⓿ Convection regeneration Microwave regeneration A comparative computer experiment was performed

❶⓿

Convection regeneration

Microwave
regeneration

A comparative computer experiment was performed in which the

humidity of the
adsorbent was reduced to level Hu using convection and microwave radiation successively .

Humidity level change

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TARGET GUNCTION OR Microwave regeneration conditions Convection regeneration conditions ❶❶

TARGET GUNCTION

OR

Microwave regeneration conditions

Convection regeneration conditions

❶❶

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Evaporation heat Heat of desorbtion Purge air, temperature In the process

Evaporation heat

Heat of desorbtion

Purge air, temperature

In the process of mathematical

modeling of the regeneration process using the
convection desorption method, the following equations were used:

Heat balance equation

❶❷

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Purge air, temperature Evaporation heat Microwave energy The electromagnetic field distribution

Purge air, temperature

Evaporation heat

Microwave energy

The electromagnetic field distribution

In the process

of mathematical modeling of the regeneration process using the
microwave desorption method, the following equations were used:

❶❸

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A comparative computer experiment was performed in which the humidity of

A comparative computer experiment was performed in which the humidity of

the
adsorbent was reduced to level Hu using convection and microwave radiation successively .

❶❹

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The pole N of a magnet Non-magnetic material MOLECULE H2O ADSORBENT

The pole N of a magnet

Non-magnetic material

MOLECULE
H2O

ADSORBENT

The pole S of a

magnet

A comparative computer experiment was performed in which the humidity of the
adsorbent was reduced to level Hu using convection and microwave radiation successively .

❶❺

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The action of microwave radiation makes it possible to effect on

The action of microwave radiation makes it possible to effect on

water molecules
directly.

The great value of the dielectric constant is explained by the peculiarities of the H2O molecule. The large value of the static permittivity of water (ε = 81) is due to the fact that water is a strongly polar liquid and therefore has a soft orientation degree of freedom (ie rotation
of molecular dipoles).

The magnitude of the energy of microwave radiation

The electromagnetic field distribution

Microwave energy

The dielectric permittivity

MAGNETRON

❶❻

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Convection heating Microwave influence Effects on water molecules Computer calculations showed,

Convection
heating

Microwave
influence

Effects on
water molecules

Computer calculations showed, that when drying

by convection, the temperature of the adsorbent was 100 ° C. And when it was dried with microwaves - 80 ° C only.

100 ° C

20 ° C

80 ° C

WATER DEPORISATION STAGE

Microwave regeneration conditions

Convection regeneration conditions

❶❼

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A lower heating temperature of the adsorbent requires a smaller volume

A lower heating temperature of the adsorbent requires a smaller volume


of dried air to cool the adsorbent to the adsorption temperature

Convection
heating

Microwave
influence

Volume
of cooling
dried air

100 ° C

20 ° C

80 ° C

Required amount of cooling air

Taking into account that

and

ensues, that

COOLING ADSORBENT STAGE

❶❽

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In the process of convection heating, data are obtained on the

In the process of convection heating, data are obtained on the

dynamics of temperature growth in the control layers Sa1, Sa2, Sa3, Sa4, Sa5 and Sa6 of the adsorbent volume. 

Convection heating influence on the temperature of the adsorbent volume

❶❾

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Microwave influence on the temperature od the adsorbent volume In the

Microwave influence on the temperature od the adsorbent volume

In the process

of microwave heating, data are obtained on the dynamics of temperature growth in the control layers Sa1, Sa2, Sa3, Sa4, Sa5 and Sa6 of the adsorbent volume. 

❷⓿

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Unevenness of heating and the reasons for this Unevenness of electromagnetic

Unevenness of heating
and the reasons for this

Unevenness of electromagnetic field

strength

Unevenness of convection

❷❶

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Also, data are obtained on the dynamics of average temperature growth of the adsorbent volume. ❷❷

Also, data are obtained on the dynamics of average temperature growth

of the
adsorbent volume. 

❷❷

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wet air dry air air lost AIR COMPRESSOR AIR DRYER 85%

wet air

dry air

air
lost

AIR COMPRESSOR

AIR DRYER

85%

12%

Compression heating
energy consumption

1%

12%

15%

100% energy

2%

15%

In case


of an additional saving of cooling air by 1.4 times, the purge air costs will decrease from 3% to 2%.

THE ENERGY SAVINGS OF THE COMPRESSOR WILL BE 6.6%.

Only 15% of the energy expended by the compressor
passes into the potential energy of compressed air

❷❸