Honeywell Eclipse ImmersoJet Design Manual

Design Guide 330

11/15/2016

Eclipse ImmersoJet

Burner

IJ Series

Version 3

Copyright

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death or serious injury.

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minor or moderate injury.

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Indicates an important part of text. Read thoroughly.

NOTE

NOTICE

CAUTION

WARNING

Copyright 2005 by Eclipse, Inc. All rights reserved
worldwide. This publication is protected by federal
regulation and shall not be copied, distributed,
transmitted, transcribed or translated into any human or
computer language, in any form or by any means, to any
third parties, without the express written consent of
Eclipse, Inc.

Disclaimer Notice

In accordance with the manufacture’s policy of continual
product improvement, the product presented in this
brochure is subject to change without notice or obligation.

The material in this manual is believed adequate for the
intended use of the product. If the product is used for
purposes other than those specified herein, confirmation
of validity and suitability must be obtained. Eclipse
warrants that the product itself does not infringe upon any
United States patents. No further warranty is expressed or
implied.

Liability & Warranty

We have made every effort to make this manual as
accurate and complete as possible. Should you find errors
or omissions, please bring them to our attention so that we
may correct them. In this way we hope to improve our
product documentation for the benefit of our customers.
Please send your corrections and comments to our
Marketing Communications Manager.

consequential, including but not limited to loss of use,
income, or damage to material arising in connection with
the sale, installation, use of, inability to use, or the repair
or replacement of Eclipse’s products.

Any operation expressly prohibited in this manual, any
adjustment, or assembly procedures not recommended or
authorized in these instructions shall void the warranty.

Document Conventions

There are several special symbols in this document. You
must know their meaning and importance.

The explanation of these symbols follows below. Please
read it thoroughly.

How To Get Help

If you need help, contact your local Eclipse representative.
You can also contact Eclipse at:

1665 Elmwood Rd.
Rockford, Illinois 61103 U.S.A.
Phone: [phone]
Fax: [phone]
http://www.eclipsenet.com

Please be sure to know your equipment’s information
found on the product label when contacting the factory so
we may better serve you.

It must be understood that Eclipse’s liability for its product,
whether due to breach of warranty, negligence, strict
liability, or otherwise is limited to the furnishing of
replacement parts and Eclipse will not be liable for any
other injury, loss, damage or expenses, whether direct or

2

32-00069—01

Table of Contents

1 Introduction............................................................................................................................ 4

Product Description .............................................................................................................. 4

Features ............................................................................................................................... 4

Audience .............................................................................................................................. 4

Purpose................................................................................................................................ 4

ImmersoJet Documents ....................................................................................................... 4

Related Documents.............................................................................................................. 4

2 Safety...................................................................................................................................... 5

Warnings .............................................................................................................................. 5

Capabilities........................................................................................................................... 5

Operator Training ................................................................................................................. 5

Replacement Parts...............................................................................................................5

3 System Design....................................................................................................................... 6

Design .................................................................................................................................. 6

Step 1: Burner Model Selection............................................................................................ 6

Step 2: Tube Design.............................................................................................................7

Step 3: Control System ........................................................................................................ 9

Step 4: Ignition System ........................................................................................................ 10

Step 5: Flame Monitoring System ........................................................................................ 10

Step 6: Combustion Air System ........................................................................................... 11

Step 7: Main Gas Shut-Off Valve Train ................................................................................ 13

Step 8: Process Temperature Control System..................................................................... 13

Appendix ................................................................................................................................... i

Key to System Schematics................................................................................................... ii-iii

Notes .................................................................................................................................... iv

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3

Introduction

1

Product Description

The ImmersoJet burner is a nozzle-mix, tube-firing burner
that is designed to fire at high velocities through small
diameter immersion tubes. The standard burner includes
a packaged blower, actuator control motor, integral
butterfly valve, ratio regulator, burner body, combustion
chamber, nozzle (specific to fuel used), rear cover, spark
and flame rods, and gas orifice (also specific to fuel used).

Figure 1.1. Standard ImmersoJet Burner

Features

Audience

This manual has been written for personnel already
familiar with all aspects of an immersion burner and its
add-on components, also referred to as the burner
system.

These aspects include:

• Design/selection

• Use

• Maintenance

The audience is expected to be qualified and have
experience with this type of equipment and its working
environment.

Purpose

The purpose of this manual is to ensure that the design of
a safe, effective, and trouble-free system is carried out.

ImmersoJet Documents

Design Guide No. 330

• This document

Datasheet Series No. 330

• Required to complete design and selection

Installation Guide No. 330

• Used with datasheet to complete installation

Related Documents

• EFE 825 (Combustion Engineering Guide)

• Eclipse Bulletins and Information Guides: 610, 710,
720, 730, 744, 760, 930

The combustion gases from the burner scrub the inner
tube surface and produce high heat transfer rates. This, in
combination with the high velocity flow through the smaller
diameter tubess allows for system efficiencies in excess
of 80%.

The smaller ImmersoJet tubes also have smaller bends
which means less tank space is occupied by the tubes.
With a combustion chamber that is integral to the burner
body, the new version of the ImmersoJet can sit lower on
the tank than previous ImmersoJet models.

4

32-00069—01

Safety

DANGER

WARNING

NOTICE

Important notices which help provide safe burner
operation will be found in this section. To avoid personal
injury and damage to the property or facility, the following
warnings must be observed. All involved personnel should
read this entire manual carefully before attempting to start
or operate this system. If any part of the information in this
manual is not understood, contact Eclipse before
continuing.

2

■ This manual gives information for the use of these

burners for their specific design purpose. Do not
deviate from any instructions or application limits
in this manual without written advice from Eclipse.

Safety Warnings

■ The burners covered in this manual are designed
to mix fuel with air and burn the resulting mixture.
All fuel burning devices are capable of producing
fires and explosions when improperly applied,
installed, adjusted, controlled or maintained.

■ Do not bypass any safety feature; fire or explosion
could result.

■ Never try to light the burner if it shows signs of
damage or malfunction.

■ The burner is likely to have HOT surfaces. Always
wear protective clothing when approaching the
burner.

■ Eclipse products are designed to minimize the use
of materials that contain crystalline silica.
Examples of these chemicals are: respirable
crystalline silica from bricks, cement or other
masonry products and respirable refractory
ceramic fibers from insulating blankets, boards, or
gaskets. Despite these efforts, dust created by
sanding, sawing, grinding, cutting and other
construction activities could release crystalline
silica. Crystalline silica is known to cause cancer,
and health risks from the exposure to these
chemicals vary depending on the frequency and
length of exposure to these chemicals. To reduce
the risk, limit exposure to these chemicals, work in
a well-ventilated area and wear approved personal
protective safety equipment for these chemicals.

Capabilities

Only qualified personnel, with good mechanical aptitude
and experience with combustion equipment, should
adjust, maintain, or troubleshoot any mechanical or
electrical part of this system.

Operator Training

The best safety precaution is an alert and trained
operator. Train new operators thoroughly and have them
demonstrate an adequate understanding of the
equipment and its operation. A regular retraining schedule
should be administered to ensure operators maintain a
high degree of proficiency.

Replacement Parts

Order replacement parts from Eclipse only. Any customer­supplied valves or switches should carry UL, FM, CSA,
CGA and/or CE approval where applicable.

32-00069—01

5

System Design

3

Design

The design process is divided into the following steps:

1. Burner Model Selection

• Determine net input required for the tank or process

• Select tube efficiency

• Calculate gross input required

• Select burner model

2. Tube Design

3. Control Methodology

4. Ignition System

5. Flame Monitoring System

6. Combustion Air System: blower and air pressure
switch

7. Main Gas Shut-Off Valve Train

8. Process Temperature Control System

Step 1: Burner Model Selection

Determine the Net Input Required to the Tank

The net input to the tank is determined from heat balance
calculations. These calculations are based on the heatup
and steady-state requirements of the process, and take
into account surface losses, tank wall losses and tank
heat storage. Detailed guidelines for heat balance
calculations are in the Eclipse Combustion Engineering
Guide (EFE 825).

Select Tube Efficiency

The efficiency of the tube is the net heat input to the tank
divided by the heat input to the tube. Efficiency is
determined by the effective tube length. The diameter of
the tube has little influence on the efficiency. At a given
burner input, the net input to the tank is higher for a longer
tube than for a relatively short tube.

It is customary to size conventional immersion tubes for
70% efficiency, a reasonable compromise between fuel
economy and tube length. Small diameter tubes occupy
less tank space than conventional tubes, however, so
their length can easily be increased to provide efficiencies
of 80% or more.

Calculate the Gross Burner Input

Use this formula to calculate gross burner input in Btu/h:

net output to tank

tube efficiency

Fuel Type

Table 3.1 Fuel Type

Fuel Symbol

Natural
Gas

Propane C3H

Butane C4H

Btu/ft3 at standard conditions (MJ/m3 at normal
conditions)

If using an alternative fuel supply, contact Eclipse with an
accurate breakdown of the fuel components.

Applications Requiring Special Consideration

ImmersoJet burners are used for firing spray wash tanks,
dip tanks, and storage tanks such as those used for fire
sprinkler systems. Generally, the small bore system can
be used wherever conventional immersion burner
systems are used, except where high heat flux off the
small bore tube can break down the contents of the tank.

Zinc Phosphate Solutions

High heat fluxes break down the phosphate, forming a
heavy insulating sludge, which deposits on tube surfaces
and causes rapid tube burnout. To reduce early tube
failure, make the immersion tube with electro-polished
stainless steel, and limit the burner to the capacity shown
in the limited capacity portion of Table 3.2 where capacity
is based on tube size.

CH

90%+

4

Heating Value

1000 Btu/ft
(40.1 MJ/m

2525 Btu/ft3

8

(101.2 MJ/m

3330 Btu/ft3

10

(133.7 MJ/m

= gross burner input

Gross

3

3

)

3

3

Specific

Gravity

)

)

0.60

1.55

2.09

WOBBE

Index

1290

3

Btu/ft

2028

3

Btu/ft

2303

3

Btu/ft

6

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