Design of Horizontal & Short Vertical Vessels
‫األول ‪ :‬هو احنا هناخد إيه النهاردة في السكشن؟‬
‫الثاني ‪ :‬هناخد ‪Vessel Design‬‬
‫األول ‪ :‬يوووووووووووووووووه ‪ ‬أمال هناخد ‪ Reactor‬امتى؟‬
‫الثاني ‪ :‬قصدك على سكشن ال ‪ non-isothermal‬يعني؟ أنا شفت‬
‫االعالنات بتاعة السكشن امبارح على ال ‪ MBC 2‬وقالك‪Coming :‬‬
‫‪ Soon on December‬فقط وحصريا على شاشة ال ‪MBC 2‬‬
‫الثالث ‪ :‬أنا مش عارف انتو ازاي فايقين ورايقين كدة وقاعدين‬
‫تقولوا هناخد إيه ومش هناخد إيه ومش حاسين بالكارثة اللي أنا‬
‫فيها‬
‫االتنين في نفس واحد ‪ :‬كارثة إيه يابني؟!!!‬
‫الثالث ‪ :‬سؤال بجد مصيري ومحيرني جدا ونفسي أالقي له إجابة ‪‬‬
‫األول ‪ :‬ياعم ما تخلص وتقول بقى وقعت قلبي‬
‫الثالث ‪ :‬يا ترى ‪ sheet‬النهاردة كام مسألة؟!!!!!!!!!!!!!!!!!!!‬

In designing short vessels, we firstly calculate the
thickness of shell and heads according to the
operating pressure [i.e. internal or external]. In this
case we will not do checks on the thickness as done
in tall vessels so, we will design the support directly.
The use of lugs is typically
limited to vessels of small to
medium diameter (1 to 10 ft.)
and
moderate
height-todiameter ratios in the range of
2:1 to 5:1.
And of Course
Sheet5: 2
problems
Sheet5 : 2
Problems
After calculating fs, you should select the dimension of pipe (lug) and check on
your selected dimensions [i.e. check if the lug supports will withstand the load
applied on it]. Following are the steps used to select the suitable pipe
dimensions:
1. From the following table, assume nominal diameter to get the inside and
outside diameter of the pipe. Begin your assumption with nominal
diameter = 2" [always take the Schedule number = 80].
Sheet 5: 2
Problems
2. Calculate the radius of gyration (r) from the following
equation:
3. Calculate the value of h’/r.
4. Make the check on the selected pipe dimensions
according to the value of h’/r . Those values are
summarized in the following table:
h'
r
The Check
Relation
h'
 60
r
fs
  allpipe
Apipe
60 
fs

Apipe
h'
 200
r
h'
 200
r
Fcritical  5 * f s
 all. pipe
1
1
 all. pipe
 h' 
* 
r
2
 2 * E ' * I min.
Fcritical 
h'
I min.  I cal.
5. If the corresponding check is not correct, assume another nominal
diameter [greater than 2"] and repeat the above steps.

Assume:
In order to check on this assumption, use the following formula:
If σtension) max = - ve value: the number of bolts equal 4 used for fixation.
If σtension) max = + ve value: the number of bolts calculated from the
following equation:
Hello?!
I just want to
tell u that
sheet5 : 2
problems
Design of Saddle Support:
or
Sheet5: 2
Problems
In Mass
Transfer?!
Assume:
I’ll go to the
section now.
I don’t know
which subject
but they told me
that Sheet5: 2
Problems
Design of Bearing Plate:
Assume:
Yes

Design of Anchor Bolts: only 4 bolts for fixation
Sheet5: 2
problems?
1.
A pressurized vessel lined internally with 4 mm Nickel material is to be fabricated and installed out
of doors in Mostorod area. The vessel has the following specifications:
Shell inside diameter
1.5 m
Shell length
4m
Maximum internal pressure
20 atm.gage
Operating temperature
150ºC
Lug support height
2m
No. of lugs
6
Corrosion allowance
1 / 16 in.
Insulation thickness
2 in.
Shell material
C.steel
Allowable tensile strength of material of construction
15000 psi
Head type
Dished
Specify the design for:
- Shell & heads.
- Lug support, bearing plate & anchor bolts.
- Maximum permissible vacuum applied in the vessel.
2.
A process horizontal vessel is to be fabricated and installed out of doors. The vessel has the
following specifications:
Shell inside diameter
1.1 m
Shell length
2.1 m
Maximum internal pressure
10 bar
Distance between two supports
1.25 m
Operating temperature
150ºC
Support height
1m
Fluid
Heavy hydrocarbon
Corrosion allowance
3 mm
Insulation thickness
50 mm
Shell material
Carbon steel
Allowable tensile stength of material of construction
1000 kg/cm2
Type of heads
Dished
Specify the design for:
- Shell & heads.
- Support, bearing plate and anchor bolts.