Heat Tracing and Tube Bundles
|
|
|
Have
a question on or need to purchase quality Heat Tracing, Tube Bundles, Instrument
Enclosures and Supports? Our
Sponsors Prochem Pipeline Products are Experts in this area!
Contact them here.
Just Scroll down to get to some great technical data on each of these subjects
Heat Tracing and Tube Bundles
TRACEPAK solves problems for analytical, instrumentation and mechanical plant utility applications - Drop-out and viscosity control are major considerations in instrument impulse connections, small diameter process lines and analyzer sample transport. A properly designed and selected pre-traced tubing bundle offers an effective solution to these problems. This technical brochure also details the various temperature control options across a broad range of applications including both electrical and steam tracing. There are also options for pre-insulated weatherproof tubing bundles and a wide variety of connections.
Tubing Bundles and Heated Hose - A tubing bundle is a small diameter tube or group of tubes packaged in an insulated, weatherproofed jacket. It's steam or electric traced to provide freeze protection or temperature maintenance.
Heat Traced Tube Bundles for High Temperature Lines -Got a high temperature application? Extreme temperature applications such as high pressure drums, turbine inlets and main steam headers, are often part of design considerations. Temperatures up to 1200°F (650°C) are common and O’Brien buffered TRACEPAK® products offer the total solution to the most demanding applications.
Cut-To-Length Bulk Bundle for Field Installed Temperature Sensors - O’Brien TRACEPAK® - Stackpak tubing bundles can be configured to meet your design requirements. Standard design bundles with Sensor Tube are supplied in long continuous lengths. The advantage is that the expense and uncertainty of estimating an anticipated run length for factory installed sensors is eliminated.
Cost Comparision between Electrical Heat Tracing Solutions and Field Fabrication - This Simple Materials breakdown gives a good indication of the potential savings by utilising electrical heat tracing.
8.09
Heated
Tubing: Prefabricated or Field Trace & Insulate? -
Peter R. Baen and Rory R. Johnson - Heated instrument tubing is common
throughout industry and is most often used for winterization. It is also common
for tubing to be maintained at high temperatures for viscous processes or to
keep gas samples above dew point and prevent condensation. In many cases the
tubing is field routed, electrical heat tracing is then installed, followed by
the insulation and weather barrier. Alternatively, pre-insulated and heat traced
"tube bundles" are designed to expedite installation, minimize total
installed cost, and ensure predictable and reliable operation. This paper
addresses the advantages and limitations of both approaches.
3.09
Specifying
and Designing Tubing Bundles for Analysers -
As many as 50% of the process analysers installed today are either not in
service or fail to provide reliable results - Improperly selected tubing bundles
are one of the major contributors to this complaint.
3.09
LNG
Processing and On Stream Analysis - When natural gas is
cooled below -160 °C (-256 °F) at atmospheric pressure it condenses to a
liquid and becomes liquefied natural gas (LNG). LNG is stored as a boiling
cryogenic liquid at relatively low pressure; the gases that boil off are vented
and collected insuring that the liquid temperature remains constant. This paper
discusses a typical LNG process and examine the critical measurements required.
3.09
Tube
Selection for Analyzer Sample Systems - Selecting the
right process tube for use in analyzer sample transport systems requires
consideration of process and application conditions
3.09
Stack
Gas Sample Systems - These applications are unique in
that stack gas is very wet and hot. You must maintain temperatures above the dew
point during extraction at the sample probe and transport to the sample
conditioning cabinet.
3.09
Best
Practices: Right Way / Wrong Way - To
ensure reliable analyser performance sample transport
lines require thought and the implementation of
some key practices
Sample transport systems present tremendous opportunities for improved analyser accuracy - Chemical and petrochemical industries around the world have clearly identified that yield, scrap and compliance improvements can be directly attributed to the effectiveness of the sample transport system. Analyzers will function only as well as the transport system yet this same system is often the most overlooked and misunderstood component. This product bulletin details the potential sample transport system solutions.
Steam Distribution and Condensate Return - When you need a weatherproofed, preinsulated single tubing line for your steam supply and condensate return lines, think O'Brien S-LINE. Perfect for insulation for personal protection or to prevent heat loss from your lines, S-LINE provide an inexpensive alternative to field insulation and weatherproofing small lines.
Effective Freeze Protection and Temperature Maintenance for your Instrument Lines - Details on how to keep your impulse lines from freezing, or maintaining a certain temperature
Chloride Stress Corrosion in Tubing Bundles - Chloride stress corrosion cracking (CSCC) is certainly not a new problem nor is it specifically related to tubing bundles. In fact, controlling or eliminating this type of failure is much more attainable in a pre-manufactured tubing bundle than with field construction. 316SS and 304SS are particularly susceptible to this type of stress corrosion and 316SS is the most commonly used grade of SS tubing. A combination of factors must be present before CSCC is created.
An Investigation into the Sources of Background CO in Heated Flexible Sample Transport Hose - This technical paper details tests that were administered with the goal of determining the source of background CO present in flexible heated sample system hoses.
Winterising Best Practices - You’ve just spent $250 million on a plant project. How much will a freeze-up cost you in lost revenue and added expense? Most facilities are designed and constructed with very fast project time lines. Critical instrument and impulse line freeze protection details often fall to the bottom of a project priority list or pushed off to the field. Without careful considerations about each application the chances for plant freeze-ups become very likely. As with all new construction, there are “right ways” and “wrong ways” in dealing with winterization. These are detailed in this article.
TRACEPAK Installation Instructions - Installation instructions are provided to give the field engineer and installers the necessary information to install TRACEPAK in an efficient and effective manner.
Applications - A wide range of process, sample and environmental applications of Tubebundles - These links give good examples of various applications.
Other Useful Links
New Directions in Pipe Heat-Tracing Designs - Escalating energy costs drive the future - Knox Pitzer and Roy Barth - Heat-tracing systems are often overlooked when industrial energy reduction initiatives are considered, but these systems are large energy consumers that may be optimized for energy conservation. A large variety of heat-tracing methods are available today. From www.insulation.org
Heat Tracing - Steam or Electric? - For decades, steam tracing has been an accepted practice in the heating of piping, vessels and equipment. Steam tracing has been used in industrial processing plants for over a century. Early on, steam jacketing and tubular tracing became the chosen means of keeping the contents of pipes at required temperatures. As refineries and chemical plants expanded in size and product diversity following World War II, electric-tracing methods were developed to provide thermostatic control for low-temperature and heat-sensitive materials. There are applications where one method may show to advantage over the other, but today steam tracing continues to be the most widely used method of heat tracing in industrial plants around the world. from Steam Online.
The Benefits of Steam Tracing vs. Electric Tracing - Horst Thieme and James R. Risko - Many articles have been written concerning the advantages of steam over electricity (or vice versa) for- tracing applications. A valid case can probably be made for either, depending on the method being promoted by the particular author. These promotional articles have generally been based on strictly economical considerations which represent only part of the story. This article is intended to provide insights into inherent practical advantages of steam which may have been overlooked in the past. Here are some points and simplified piping schematics to consider. From the Fluid Controls Institute.
The Relative Merits and Limitations of Thermal Fluid, Electric and Steam Heat Tracing Systems - R. Knox Pitzer Sr- The cost of one heat tracing method versus another is of importance when selecting a heating system for plant pipes and equipment, given that each system has the capability to perform the required function. Today, however, long-term energy efficiency and the reduction of hydrocarbon pollutants may be the most important aspect in the selection of plant equipment including heat-tracing systems. Energy conservation and the reduction of greenhouse gas (GHG) emissions go hand-in-hand. From thermon.com
Steam Tracing with MS Excel - Andre de Lange - Steam Tracing with MS Excel is presented as a guide to understanding how the spreadsheet "steam_tracing.xls" works to perform various calculations associated with steam tracing. From cheresources.com
Safety Alert - Heat Tracing and Cladding - In 2006 on Marlin platform an event occurred whereby heat tracing was short circuited by cladding, creating a potential electrocution and ignition hazard. This alert details the key learnings.
Need more information or advice? Contact our Sponsor Prochem Pipeline Products. They also have a wide range of other Instrumentation Products.