Everything You Need To Know To Find The Best Glass lined accessories

If you are a long-time subscriber to our blog, you know that we cover a wide range of technologies, products, and services in our posts.  The intent here is to provide you with a variety of information from all areas of our expertise while keeping our content diverse so our blog doesn’t become stagnant.  Statistics show, however, that the overwhelming majority of people find our articles on glass-lined equipment to be the most useful.  Well, that is a bit assumptive – they are the most viewed, but we are hopeful that our readers find the content to be useful!  For this reason, we’ve compiled a list of the top glass-lined equipment blog posts from the past few years.  Maybe you’ve read some of these already and perhaps there are some included in the list that you haven’t come across yet.  Either way, there should be some new information you.

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5 Reasons your Process Could Benefit from Glass-Lined Steel Equipment

This is by far our most viewed post and provides a great overview on the properties that make glass-lined steel so unique.

How are Glass-Lined Vessels Made?

Are you at all curious about how glass-lined vessels are manufactured?  It’s a very detailed and meticulous process (as it should be if you are ordering a high quality piece of equipment).  We find the fabrication process to be pretty interesting and we think you will too.

What is Reglassing and How Can it Work for You?

Ever heard of reglassing?  It’s a really nifty technology that can restore life back to your old, damaged, or worn vessel (and other glass-lined equipment).  If you aren’t familiar with it, it’s worth taking a look at this post.

12 Critical Do's and Don'ts for Glass-Lined Equipment (Part 1) and (Part 2)

DON’T: Pass over this article.  It’s chock full of great tips and some common sense rules you need to follow in your glass-lined care regime. 

Top 5 Tips for Keeping your Glass-Lined Equipment in Good Shape

You may not have enrolled your vessel in the jazzercise class at the gym down the street, but it doesn’t mean you can’t do something to help it maintain a healthy lifestyle.

How to Keep your Glass-Lined Equipment Safe from Thermal Shock

Tips for Working Inside Glass-Lined Equipment

Best Practices for Avoiding Damage in Glass-Lined Equipment (Part 1) and (Part 2)

The four articles listed above are packed with more useful tips and “best practices” that should be followed in order to keep your vessel safe from avoidable accidents and mistakes that can cause permanent damage to the glass lining.

9 Tips for Unloading, Rigging and Transferring Glass-Lined Vessels

Most vessels do not need to be moved once they are installed in your process.  That’s a good thing because they are big, heavy, and fragile.  When they do need to be moved, this post will give you the basic safety rules that apply. 

So does this post really deliver on its promise – do you now know everything about glass-lined equipment?  Of course not!  We could (and plan to) develop additional content on this subject matter because there is so much to write about.  But we’d really like to know…what else is there that YOU would like to read about?  What questions of yours are still unanswered?  If you have inquiries or topics of interested (related and unrelated to glass-lined equipment) send us your comments and we will not only respond to you but we might even write an entire article on the subject matter.    

If you're still hungry for more technical information, we’ve got some additional downloadable resources on glass-lined equipment.  Click on one of the links below for more information:

For more Glass lined accessoriesinformation, please contact us. We will provide professional answers.

The main purpose of our Solutions Ahead blog is to write about topics that you, our readers, want to hear about.  We are constantly brainstorming ideas for posts that we think are interesting, but what better way to come up with good subject matter than to get it directly from you?  

Over the past few months we’ve been compiling questions you come to us with.  Surely if a few people are inquiring, there are dozens more who have the same question but just haven’t asked it.  After reading this post, which contains questions and answers related to glass-lined equipment, you might have a few questions of your own so please reach out to us and ask!  We are always happy to provide more information to give you a better understanding about the products we offer so you can make an informed decision when it comes to finding the right solution for your application. 

Q: What are the advantages of using glass-lined equipment?

A:  There are several advantages in the unique characteristics of glass lining that make this material of construction a top selection of design engineers.  Here are some key reasons why glass-lined steel can benefit your process:

• Corrosion Resistance - Glass-lined steel provides superior corrosion resistance to acids, alkalis, water and other chemical solutions(with the exception for hydrofluoric acid and hot concentrated phosphoric acid).  As a result of this chemical resistance, glass lining can serve for many years in environments that would quickly render most metal vessels unserviceable. 
• Versatility - The chemical, mechanical, and thermal properties of glass are proof that this material can handle a diverse range of operating conditions. Users of glass-lined equipment are therefore able to make drastic changes to their process without needing new equipment to do so. 
• Purity - Aggressive reaction environments and extractable metals can cause undesirable catalytic effects or fluctuations in process reactions leading to product contamination in unlined steel or alloy reactors.   Glass-lined steel is inert so it is impervious to contamination.  Additionally, it does not adversely affect flavor or color, which is of extreme importance to food and drug applications where purity is essential. 
• Cleanability - Glass-lined steel has been adapted to cGMP requirements for cleaning, cleanliness, and sterilization.  Its high degree of surface smoothness makes it easy to clean using non-corrosive, low pressure cleaning systems.  The smooth surface of glass-lined steel also resists the buildup of viscous or sticky products, which means less frequent cleaning. 
• Durability -  The combination of glass and steel provides you with the best of both materials of construction; fusing glass to steel produces a composite material with an inside that offers product protection and an outside that provides structural strength and durability. 

Q:  Why are glass lining color options blue and white?

A: The blue coloring comes from the cobalt that was added to the glass formulations a long time ago.  Usually the choice of which color to use comes down to concerns about cleaning and what particles could be left behind.  If people are concerned with dark-colored particles being left on the surface, they will usually choose a white glass so they can see the particles either.  If the particles are a lighter color, then you would choose a blue glass.  Also, if you are going to be observing the reaction (using a vessel light) during operation, white glass tends to be a bit better in terms of being able to see what is going on inside.

Q: How are the level measurement marks made on agitators?

A: We create the lines/lettering using the contrasting glass color.  So, blue lines on a white agitator or white lines on a blue agitator.

Q: What temperature range should glass-lined equipment be expected to serve?

A:  The minimum temperature allowance for a standard glass-lined steel reactor is -20°F (-29°C).  For cryogenic processes that require even lower temperatures there are special models that can be designed to accommodate temperatures as low as -76°F (-60°C).  The maximum temperature is 500°F ( 260°C). 

Another factor to take into account is temperature change limitations.  This refers to the allowable temperature differential between the vessel walls and the product.  Simply put, if you put something into a reactor and the temperature of the product varies too greatly from the temperature inside the reactor you can cause a lot of damage.  For more information on preventing thermal shock read out post on how to protect your glass-lined equipment.

Q:  What’s the difference between half-coil jacketing and conventional jackets? 

A:  The half-pipe or split-coil jacket (referred to by De Dietrich as HemiCoil®) consists of a welded half pipe that wraps around the outside of the vessel, creating a circular path for the heat transfer fluid to pass through.  In a split-coil jacket, heating and cooling media flow through the pipe coils with high velocity and turbulence.  Thus, film coefficients and heat transfer rates are higher than in conventional jackets. Vessel contents heat up and cool down, and the heat transfer circuit drains much faster-saving energy and reducing batch time.  With the split-coil design, only the diameter of the pipe - not the unsupported height of the inner vessel - must contain the jacket pressure. This permits the safe use of much higher pressures within the coils than is possible in conventional jacketing: 450 psig at 500°F is the standard operating limit.

The coils on HemiCoil reactors are welded to the vessel prior to glassing; conventional jackets can be added to a vessel after.  Also, it will cost you approximately 30% to 35% more than the same reactor with a conventional jacket. In many instances this premium can be more than offset by decreased operating costs, increased heat transfer rates and better processing efficiency.  For more information about jacket selection for your reactor read our post on jacket options. 

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