Stainless Steel Cone Bottom Tank

Stainless Steel Cone Bottom Tank

A stainless steel cone bottom tank is a funnel-shaped tank bottom with the drain at the center and lowest point. They are often used in process applications that require total drainage of the tank.Even for moisture-sensitive and viscous powders, this design allows for clean discharge.
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What is Stainless Steel Cone Bottom Tank?

A stainless steel cone bottom tank is a funnel-shaped tank bottom with the drain at the center and lowest point. They are often used in process applications that require total drainage of the tank.

Even for moisture-sensitive and viscous powders, this design allows for clean discharge.

The angle and discharge outlet can be customized and designed.

 

 
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Features of Stainless Steel Conical Tanks

Conical tanks come equipped with various features to enhance their functionality and cater to specific process needs. Here's a breakdown of some key features: 

 

Capacity: Ranges from small-scale 9-gallon tanks for home brewing to massive industrial tanks exceeding 50,0 gallons, catering to diverse production volumes.

 

Material Grade: Typically constructed from food-grade 304 or 316 stainless steel, ensuring product safety and corrosion resistance.

 

Jacketing: Jacketed tanks feature a double wall construction with a space in between that allows for the circulation of heating or cooling fluids for temperature control during processing.

 

Insulation: Jacketed tanks can be further insulated to minimize heat transfer and maintain consistent temperatures.

 

Lids: May be flat or domed, and equipped with hatches or manways for access during cleaning or maintenance.

 

Valves: Inlet and outlet valves for filling, discharging, and sampling liquids.

 

Fittings: May include drain ports, spray balls for cleaning, and pressure relief valves for safety.

 

Finish: Interior surfaces are typically polished to a smooth finish for optimal cleanability, while exteriors may have a brushed or matte finish.

 

Application of Stainless Steel Cone Bottom Tank

 

 

Cone bottom powder storage tanks are highly durable and can withstand harsh operating conditions. They are resistant to impact, temperature variations, and mechanical stress, making them suitable for both indoor and outdoor installations. Additionally, stainless steel tanks can be customized to meet specific requirements, such as different capacities, shapes, and access points, providing flexibility in design and installation.

The conical bottom design is widely favored by industries that need to store viscous liquids or moisture-sensitive powders:

  • Food and Beverage Industry
  • Pharmaceutical Industry
  • Chemical Industry
  • Water and Wastewater Treatment
  • Oil and Gas Industry
  • Agriculture and Farming
  • Brewing and Distilling
  • Cosmetics and Personal Care

Stainless steel tanks find applications in various industries, including food and beverage, pharmaceutical, chemical, water treatment, oil and gas, agriculture, brewing and distilling, and cosmetics. Their versatility, durability, and resistance to corrosion make them a reliable choice for storing a wide range of materials and substances.

 

4 Common Stainless Steel Tank Bottoms
 

The bottom of your tank may not be the first thing you think about when choosing to design a tank, but it is a critical component to optimizing your process. Whether you're mixing, storing, draining, recirculating or all of the above, the shape of your tank bottom will need to best align with your process goals.  

1

Cone Bottom
Cone bottoms are funnel shaped, typically with the drain at the center and lowest point of the cone. The cone bottom is the most common tank bottom that we make and is the most effective at draining, especially in processes with high
solids content. If you need to be sure all of your liquids drain from your tanks, a cone bottom is your solution. The angle of the cone is customizable, but is typically a straight pitch at 12 degrees. Cone bottoms work well with a mixer, but the conical shape is not ideal for solid suspension as this tank geometry can create limitations on fluid flow.

2

Dish Bottom
The dish bottom is rounded with a drain at the center and lowest point of the dome. Dish bottom tanks are a popular option for mixing and draining, as the convex shape aids in better fluid circulation throughout the tank. Compared to the cone bottoms, the dish bottom tank is a significantly better geometry for solid suspension and slurries. Tanks with a dish bottom are more rigid due to the strength of the curve and the knuckle radius where the shell and head connect. Dish bottom tanks are used commonly for ASME certified pressure vessels.

3

Slope Bottom
Slope bottom tanks are flat bottom tanks that slope at an angle to one side towards a drainage outlet located around the outside perimeter of the tank. This design allows for easier access to the drain than dish or cone bottom, and is recommended if you'll be frequently draining your tank. As a slope angle is increased, solid suspension becomes more difficult and unsustainable. However, you can often achieve a balance of proper mixing and draining by appropriately setting your slop to best fit your application.

4

Flat Bottom
A flat bottom tank has the most neutral geometry for fluid flow when mixing. Flat bottoms tanks can accommodate a variety of process needs, offering moderate fluid flow and solid suspension capabilities. They are less costly up front because of their simple and easy to manufacture design and a shorter mixing shaft can be used compared to cone or dish bottom tanks. The one major disadvantage to a flat bottom tank is its efficiency in draining. These tanks do not drain high solids or high viscosity fluids well, thus limiting what can or cannot be mixed and stored in the vessels.

 

 

Installation, Operation, and Maintenance of Stainless Steel Conical Tanks
 

Installation
Stainless steel conical tanks typically require a solid, level foundation for proper support.
Plumbing connections for inlet, outlet, drain, and cooling/heating lines (if jacketed) need to be established.
Electrical connections may be required for controls, agitation systems (if present), and instrumentation.

Operation
Operating procedures will vary depending on the specific application and tank features.
General steps may involve filling, adding ingredients (yeast, hops, etc.), temperature control (jacketed tanks), and monitoring pressure and fermentation progress.
Safety protocols should be strictly followed, including proper personal protective equipment (PPE) usage and adherence to pressure relief procedures.

Maintenance
Regular cleaning and sanitation are crucial to maintain product purity and tank longevity.
Cleaning procedures will depend on the specific application and materials processed.
Regular inspections should be conducted to identify potential wear and tear issues and schedule maintenance as needed.
Resources: Manufacturers typically provide installation guides and operation manuals specific to their tank models. Consulting industry best practices and regulatory guidelines is also recommended.

 

When Conical Chemical Storage Tanks Are Ideal
 

Conical bottom storage tanks, with their distinctive cone-shaped base, are ideal for storing certain chemicals. Here are some situations where conical tanks shine: 

Corrosive Chemicals
The sloped bottom of a conical tank makes it easier to fully drain corrosive chemicals like acids, alkalis, and solvents. Their shape prevents puddling and allows for more complete drainage, reducing corrosion damage. The smooth interior surface also minimizes places for chemicals to collect and react.

Hazardous Waste
Conical tanks are used to collect and dispose of hazardous chemical waste and byproducts. Their complete draining capabilities ensure that hazardous waste materials are removed from the tank. They can also outfit with emission control technology to trap and neutralize hazardous gasses.

Frequent Agitation
If you need to regularly agitate the chemicals in your storage tank, a conical bottom tank is a smart choice. Their sloped base is ideal for mounting mechanical or hydraulic agitators that can thoroughly mix the tank contents. The agitators can reach more of the tank bottom due to its tapered design.
While conical tanks have many advantages for certain applications, they may not suit every chemical storage need. For less corrosive or viscous materials, a flat-bottom tank can work just as well at a lower cost. But when you need specialized handling or containment, conical storage tanks are an ideal solution.

When Alternative Chemical Storage Tanks May Be Better
Conical chemical storage tanks can be ideal for storing certain chemicals, but they may not suit every application. There are a few situations where alternative storage tank designs could be better options.

When chemicals require heating or cooling
Conical bottom tanks typically lack insulation and temperature control options that would be needed for temperature-sensitive chemicals. Double-wall tanks, tanks with insulation jackets, or tanks specifically designed for heating and cooling may be better choices.

When maximum storage volume is a priority
Conical bottom tanks taper to a point at the bottom, so some storage volume is sacrificed for the cone shape. Cylindrical tanks with flat bottoms maximize the storage capacity for the tank's footprint. If storage volume is most important, a flat-bottom cylindrical tank is probably your best bet.

When chemicals need to be mixed or agitated
The pointed bottom of a conical tank can make mixing and agitation difficult. Tanks with dished or flat bottoms provide more room for mixers and agitators. Some flat-bottom tanks even have built-in mixers. Conical chemical storage tanks can still work for mixing and agitation but may require special mixers designed for conical shapes.

When tank access and cleaning are frequent or difficult
The narrow bottom opening of a conical tank can make accessing and cleaning the tank interior challenging. Tanks with larger manways, hatches, and flush bottoms provide much easier access for cleaning and maintenance. If your application requires frequent tank entry or difficult tank cleaning, a conical bottom tank may not be the most practical choice.

When strict sanitation and sterility are required
The multiple welds and crevices in a conical tank provide more opportunities for bacterial growth and contamination. Tanks with minimum internal structural elements like seamless, flush-bottom tanks may be better for high-purity or sanitary applications. Electropolishing the tank interior can also help, but may still not match a seamless tank design.
While conical bottom tanks work well for simple storage of many chemicals, certain applications may benefit more from alternative tank designs that better meet specific needs like temperature control, maximum volume, mixing, access, or sanitation. Considering how the tank will be used can help determine if a conical bottom tank is right for your needs or if another design would function better.

 

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FAQ

 

Q: What is a stainless steel tank?

A: Stainless steel is a type of iron alloy containing a certain percentage of chromium, which imparts corrosion resistance to the metal. Corrosion resistance is achieved by creating a thin film of metal oxides that acts as protection against corrosive materials. Stainless steel tanks vary in shape and size.

Q: What are the advantages of a conical tank?

A: Using a conical tank for some applications has advantages that can save money and time when compared to a flat bottom tank. Conical tanks are unique in that their contents discharge completely through the cone on the base of the tank. Their cone base and smooth internal walls ensure complete discharge.

Q: Are the advantages of cone bottom tanks found in nearly every industry?

A: The advantages of cone bottom tanks are found in nearly every industry, especially where getting every last drop from the tank is important. This type of tank has excellent geometry for draining, especially with high solids content slurries as these cone tanks provide a better full-drain solution.

Q: What are cone bottom tanks used for?

A: A cone bottom tank is used in processes where complete drainage is essential. This includes storage of heavy liquids and sludges that are difficult to drain. They are also used to separate and decant solids from liquid fractions.

Q: What is the life expectancy of a stainless steel tank?

A: Additionally, stainless steel tanks can last for up to 100 years with proper maintenance. In conclusion, the material used to make a water storage tank can have a significant impact on its durability and lifespan.

Q: How do you clean a stainless steel water tank?

A: Always use a mild detergent or cleaning solution when cleaning your water tank. Harsh chemicals can damage the finish on the tank and make it more susceptible to corrosion. Be sure to rinse the tank thoroughly after cleaning. Any detergent or cleaning solution that is left behind can cause damage to the tank over time.

Q: What is the best cleaner for stainless steel tanks?

A: Stainless Steel's best friends are quite simply soap, mild detergent or ammonia solutions in warm water, applied with a soft cloth or nylon sponge.

Q: Why must a water storage tank have a cone or bowl shaped bottom?

A: The conical shape has advantages in cleaning, filtering and separating water components. It makes draining easy and complete. These versatile tanks can be used to store clean water and contaminated water safely and efficiently.

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