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Storage Vessel Material Balance: Calculations

The storage vessel will store 2,600 kg/day of dried corn stover in batches of 1,300 kg. Overhead bunkers are normally used for short-term storage of solid materials. The storage vessel will be made of reinforced concrete with double layer steel reinforcement. The volume required is calculated based on the mass of dried corn stover and its bulk density of 130 kg/m3, giving a total volume of 20 m3. The cylinder portion will be 25 m3 with a diameter of 0.99 m and height of 1.98 m.

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52 views2 pages

Storage Vessel Material Balance: Calculations

The storage vessel will store 2,600 kg/day of dried corn stover in batches of 1,300 kg. Overhead bunkers are normally used for short-term storage of solid materials. The storage vessel will be made of reinforced concrete with double layer steel reinforcement. The volume required is calculated based on the mass of dried corn stover and its bulk density of 130 kg/m3, giving a total volume of 20 m3. The cylinder portion will be 25 m3 with a diameter of 0.99 m and height of 1.98 m.

Uploaded by

shai
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Storage Vessel

Material Balance
Calculations:
F3a
Overall Mass Balance: =F 4 [III.4.1]
2
2,600 kg/day
=1,300 kg /batch
2
Table III.4.1.1 Summary of Values around Storage Vessel
Storage Vessel Storage Vessel
Component Component
(Enter) (Exit)
Flow Rate (kg/day) Flow Rate
(kg/day)
Dried Corn Stover 2,600 Dried Corn Stover 2,600
Total 2,600 Total 2,600

III.4.2. Design Consideration and Selection


For short-term storage of solid materials for the next process, overhead bunkers are
normally used (Sinnot, et al., 2005). Bunkers are also referred to as bins which have two
sections: cylinder and hopper (Carson, 2008). To control the rate of discharge, a valve is
used.
III.4.3. Design Specifications
The specification of the storage vessel and the calculations follows Bulk Solids Handling:
Equipment Selection and Operation by McGlinchey (2008). For the materials of
construction, reinforced concrete is the most common alternative and a double layer of
reinforcing steel is likely to be considered due to concerns such as abrasion and/or
corrosion.  In determining the required size of the bin, first consideration is the mass of
the material then converting it into a volume by estimating the bulk density of the
material to be stored. The common bulk density of dried corn stover is 130

kg
(Kumar et al . , 2017).
m3

Calculating the volume of dried corn stover:


m dried corn stover
V dried corn stover =
ρbulk
2,600 kg
V dried corn stover =
130 kg /m 3
V dried corn stover =20 m3
The general rule of thumb for process vessels, 10% to 15% of the total tank volume
must provide a section for overfill protection to accommodate upsets and also the
working volume of the tank is 80% (Hall, 2018).

Calculating the volume of the cylinder:


20 m 3
V cylinder =
0.80
V cylinder =25 m3
Usually, a reasonable and economical height to diameter ratio is between 1.5 to 4.0.
Assuming the economical height to diameter is 2.
H
=2
D
Calculating the diameter of the cylinder:
V cylinder =π ¿

25 m 3=π ¿
D=0.99 m
Calculating the height of the cylinder:
H=2 D=2(0.99 m)
H=1.98 m

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