Modernization of deaerator

1.

Good Practice name: Modernization of deaerator
Zone: Europe
Idea
Submission
BU, Brewery: Ivanovo
Category:
Date: 03/06/2019
1

2.

Summary
Для снижения кислорода в питательной
воде для парогенератора в котельных
установлен деаэратор. в него поступает
конденсат и свежая вода и паром
происходит деаэрация. Пар в деаэратор
подается постояно, потому что он
соединён с атмосферой и условие подачи
пара это поддержание уставки по
далению в деаэраторе таким образом
деаэратор это постоянная составляющая
в потреблении тепла
Идея состоит в том, чтобы
модернизировать деаэратор,
использовать восстановленное тепло для
нагрева свежей питательной воды и
конденсата, а также открывать клапан
подачи пара в деаратор только в тот
момент, когда в него подается свежая
вода и не деаэрировать конденсат, в
котором нет кислорода
To reduce oxygen in the feed water for the
steam generator, a deaerator is installed in
the boiler rooms. condensate and fresh
water enter it and deaeration occurs with
steam. Steam to the deaerator is supplied
continuously, because it is connected to the
atmosphere and the condition for steam
supply is to maintain the set point in the
deaerator, so the deaerator is a constant
component in the heat consumption
The idea is to upgrade the deaerator,
use the recovered heat to heat fresh
feed water and condensate, and also
open the steam supply valve to the
deaerator only when fresh water is
supplied to it and not deaerate
condensate that is not oxygenated
BEFORE
IDEA
Результатом внедрения
данной инициативы
было большое
снижение потребления
тепла на деаэратор
The result of the
implementation of this
initiative was a large
reduction in heat
consumption at the
deaerator
RESULT
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3.

BEFORE
Deaerator scheme.
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4.

AFTER
Evaporation to the
atmosphere
Continuous boiler
blowdown
Steam for deaerotor
The washer is
installed with a
diameter of 5 mm
К1
К2
Heat exchanger 2
Heated water in
deaerator
К3
Evaporation to deaerotor
Fresh
water
after
softeners
Deaerator
Separ
ator
Evaporation
into the
atmosphere
К4
Heat exchanger 3
Condens
ate with
flushing
down
the drain
Feed water
to the boiler
Condens
ate
storage
tanks
Heat exchanger 1
Output of
hot water
supply
К5 bypass
H2
Input of hot
water supply
Water
temperature
>= 85 С
Н1
TE
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5.

IDEA
Please describe the idea.
Washers of smaller diameter were installed on the steam from the
deaerator
First recovery circuit:
Fresh water passes through the heat exchanger 2 where the vapor from the deaerator
is heated from 15 ° C to 95 ° C
Second recovery circuit:
The steam-condensate after continuous blowing of the boiler passes through the
separator and then in the heat exchanger 3 heats the water in the hot water supply of
the plant.
Thee recovery circuit:
Feed water with a temperature of about 104 ° C enters the heat exchanger 1 and heats
the condensate, which comes from the condensate storage tanks and goes to feed the
deaerator. The feed water after the heat exchanger 1 is heated by an economizer
before entering the steam generator.
IMPORTANT - The feed water temperature should not be below 85 ° C , therefore a
temperature sensor is installed at the outlet of the heat exchanger 1 and in the case of
a temperature drop below 85 ° C , condensate enters the deaerator through valve K5
bypass
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6.

IDEA
Savings
Total savings amounted to about 3.8 MJ / Hl in year
Given the low cost of gas for Russia ($ 0.08 / m3), the idea saved about 6 k$
Bellow you can see a reduction in heat consumption per 1 m3 of make-up
water in the deaerator
Efficiency of the deaerator for
feeding with fresh water Mj/m3
3 500
Efficiency of the deaerator for feeding
with condensate+fresh water Mj/m3
300
2018
2019
2 500
2 000
2018
2019
250
Mj/m3
Mj/m3
3 000
200
150
1 500
100
1 000
50
500
Month
0
1
2
3
Month
0
4
5
6
1
2
3
4
5
6
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7.

AFTER
Please select the achieved improvement(s) or innovation(s).
[x]
Type of improvement
Explanation
Improved Communication
Improved Customer relations
[x]
Savings of energy, materials or resources
The result of the implementation of this initiative was a large
reduction in heat consumption at the deaerator
Improved workplace organization
Increased Market share
Improved POC execution
Improved processes
Improved productivity
Improved quality
Improved environment, health or safety
Improved supplier relations
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8.

Idea Owner
Idea Ownership
Name of idea owner
Function
Department, Brewery
Alexey Moskalenko, Vlasov Viktor, Kalenov Sergey,
Gavrilov Alexey
Supply
Technical Service
Recognition
Contact person in case of selection
Alexey Moskalenko
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