BOILERS

Boilers are used for vaporisation of liquids by passing the steam in the coils. Boilers are made by fusing number of parallel coils in a glass shell. In Boilers, coils are designed to provide bigger cross section in the shell side as compared to condensers. The average heat transfer in Boilers is considered as 350 Kcal/m2,hr,C at a steam pressure of 3.5 bar.

Cat.
Ref.

DN

DN1

DN2

L

L1

Type

H.T.A.

Free
Cross
Area
Cm²

Jacket
Cap.
Liter

HEB4

100

25

25

375

100

A

0.15

40

2

HEB4/4

100

100

25

400

100

B

0.15

40

3

HEB6

150

40

25

450

100

A

0.35

50

5

HEB6/6

150

150

25

500

100

B

0.35

50

7

HEB9

225

40

25

700

100

A

1.00

150

16

HEB9/9

225

225

25

700

100

B

1.00

180

20

HEB12/12

300

300

25

700

125

B

1.30

330

40

Notes on use of Boilers :-

- Steam should be passed in the coils at a maximum pressure of 3.5 bar which is equivalent to a
  temperature of 147C.
- For higher temperature (maximum up to 200C) heat transfer fluids can be passed in the coils.
- Cold liquids should be preheated for better results.
- Boilers should be mounted in an external circulatory loop (as shown in figure) and not direct at the
  bottom of flask or column.
- Under certain circumstances, boilers can be mounted in series to provide larger heat transfer area.