AE Design
Two-piece design that meets the following standards: | ||
Operating Conditions
Custom designs for enhanced pressure and temperatures are also available.CE Design
Two-piece design that meets the following standards:
Operating Conditions
Custom designs for enhanced pressure and temperatures are also available.Glass lined Reactor was made of glass coating and steel plate, glass coating is fused onto the surface of steel plate at high temperature, which have the advantages anti-corrosion for glass and strength for the steel plate.
-Glass lined reactor is kind of pressure vessel which combine the inside glass fusion with the outside steel structure into one body.
*Glass lined equipment is an ideal material for anti-corrosion and its surface is very easy to polish and no contamination to mediums. It is widely used in the fields of petrochemicals, light industry, pharmaceuticals, pesticide, foodstuff, dyes and scientific research.
GLR'S do not affect the flavor, color or purity of contents .
*Corrosion Resistance Stability: Very high corrosion resistance against inorganic acid, organic acid, organic solvent with different concentration and weak base, but not applicable to alkali, hydrofluoric acid, fluoride-bearing medium and phosphoric acid with concentration above 30% at temperature over 180 degree.
Resistance to Impact: 220-10-3J.
Thermal Shock Resistance: Resistance to sudden cooling 110 degree,
Resistance to sudden heating 120 degree.
Insulation Performance: The enamel surface should be strictly tested at 20KV.
To gain a full appreciation for glass lining and its versatility, you don’t need to be an expert, but it is helpful to better understand the fundamentals by knowing the steps involved in making a vessel. The manufacture of glass-lined steel equipment is a combination of three processes: production of the glass, steel fabrication, and combining the glass and steel. Here’s a comprehensive look at these processes and exactly what happens at each phase of fabrication.
Glass-lined
vessels are constructed to have a very unique geometry, so the steel
fabrication is an equally important part of the manufacturing. Once the
heads are received, the first step is to punch pilot holes locating the
nozzles. The nozzle area is heated until the steel becomes ductile and
a die can be hydraulically forced through the pilot hole. This action
is called “swaging”.
It is important to note here that nothing
can be welded to the outside of the finished vessel. Therefore,
provisions for attaching the jacket, drive mountings, and other exterior
accessories must be made before the vessel is glassed. The following
welds are conducted to fuse the parts of the vessel body together and
prepare the vessel for jacket installation: Finally, the entire interior and exterior is steel grit blasted and prepped for glassing.
Once
the steel is made suitable for glassing, the final procedure of
combining the glass and steel can take place. The first coat of glass
is called the ground coat, also known as “slip”. The ground coat is
specially formulated with emulsifying agents to promote adherence to the
steel and does not have any corrosion resistance. After the glass
suspension is sprayed onto the prepared steel tank it is allowed time to
dry. The vessel is then transported to an electric furnace via a rail
cart where it is fired at a specific temperature for a standard length
of time to “fuse” the glass to the steel. The item is then transferred
to a controlled cooling booth that helps to reduce built-in stress in
the glass.
Watch the video of a vessel being
extracted, red hot, from the electric furnace and getting transferred to
a cooling boot.
When
the glassing process is finished the vessel then enters the welding
area to have the jacket installed. The jacket shell and jacket head
have already been welded together and are now ready to be welded onto
the closure rings that are on the vessel. A diaphragm is welded to the
closure ring to compensate for expansion and contraction of the jacket.
A hydro test, in which the vessel is filled with water, is performed
for quality assurance. Following completion, the vessel is blasted and
prepped for painting and then moved to the paint booth. Based on the
specifications of the order, nozzles will be supplied with the
appropriate ANSI Class split loose flange (these flanges are preferred
over one-piece flanges for glass lined vessels because they eliminate
heavier nozzle forgings that could cause glassing problems.) Finally,
an additional quality control check and spark test are conducted and the
vessel is ready to ship.
Whether this technology is new to you or
not, glass-lined steel is not new; it has existed for over 300 years.
While its usage has changed over time and manufacturing practices have
certainly improved, its fundamentals are evergreen. Today, companies
choose to use glass-lined equipment for the same reasons they did
centuries ago:
- Corrosion resistance – glass is extremely resistant to corrosion by acids and alkalis (except for hydrofluoric acid and hot concentrated phosphoric acid)
- Anti-stick – many substances will not stick to glass, but will stick to metal
- Purity – glass has high quality standards for food and drug applications
- Flexibility – glass can handle a diverse range of chemical conditions.
- Ease of cleaning – glass-lining surface enables quick, easy cleaning and sterilization.
- Absence of catalytic effect – eliminates the possibility of catalytic effect that can occur in vessels made with various exotic metals.
- Economy – the cost is comparable to stainless steel and most alloys.
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