In order to preserve coffee's flavor, an indirect fired air heater is used in conjunction with a spray spray dryer. Indirect air heaters provide hot air to the dryer, as indirect heating does not subject the coffee mixture to the by-products of combustion.

1. Stelter & Brinck
Since 1956
Did you know…
An Indirect Air Heater was utilized to
manufacture your morning cup o’
Joe?!

2. Stelter & Brinck
Since 1956
Did You Know…
Although instant coffee wasn’t invented until the 1700’s,
coffee berries and beans had several uses since 1000 A.D.!
- Protein bars
- Wine
- Fruit drinks

3. Stelter & Brinck
Since 1956
Where coffee began…
Coffee is said to have begun
centuries ago while an
Ethiopian goat farmer was
observing his goats acting full of
energy after consuming berries
from a coffee shrub. Curious,
the farmer had to try the
berries for himself and he
experienced the same side
effects!

4. Stelter & Brinck
Since 1956
Manufacturing Today…
Overtime cultures developed
many different ways of
roasting and grinding the
coffee bean. In order to
decrease volume and increase
shelf-life, manufacturers
began producing instant
coffee. Today, the two main
instant coffee manufacturing
methods are freeze drying and
spray drying, with spray
drying.

5. Stelter & Brinck
Since 1956
Let’s Focus on Spray Drying…
Spray drying is preferred
over freeze drying when
producting instant coffee
because it is less expensive
and the drying times are
shorter.

6. Stelter & Brinck
Since 1956
Instant Coffee Manufacturing Steps
#1
#2
#3
#4
#5
Coffee beans are ground up into small pieces.
Hot, soft water is rinsed over the grounds eliminating unwanted gases.
Cold water is rinsed through them to bring out the bold flavors.
Concentration is increased by putting mixture into a centrifuge, evaporating
excess water before cooling the extract.
Remaining gases present a mixture that are altered yet again,
the oxygen is eliminated to enhance the flavor and aroma.

7. Stelter & Brinck
Since 1956
#6
#7
To eliminate moisture from the coffee grounds, the mixture is fed through a
spray dryer.
(Hot air for the spray dryer is generated with an indirect fired air heater, as an indirect air
heater doesn’t subject the mixture to the by-products of combustion)
After the dry particles are filtered by the cyclone, they are packaged in a low-
oxygen, low-humidity canister to optimize product flavor.
Instant Coffee Manufacturing Steps (Continued)

8. Stelter & Brinck
Since 1956
Thank you!
Website: www.stelterbrinck.com
Phone: 1-513-367-9300
Check out S&B’s Blog Post:
http://www.stelterbrinck.com/blog/indirect-fired-air-heater-utilized-in-instant-
coffee-manufacturing/

9. Stelter & Brinck
Since 1956
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