Mixing Systems

An agitation system consists of many components that work in tandem with one another to carry out a desired goal. Since the function of mixing can vary depending on the specifications of the process, De Dietrich Process Systems offers a wide selection of agitators, baffles, and associated equipment to optimize your mixing performance and gear it to meet your requirements.

In addition to traditional style agitators and baffles, DDPS also offers innovative new designs to further improve mixing performance. These arrangements are combined with the right drive and mechanical seal configuration to create a comprehensive mixing system that’s engineered for your unique process needs.

An agitation system consists of many components that work in tandem with one another to carry out a desired goal. Since the function of mixing can vary depending on the specifications of the process, De Dietrich offers a wide selection of agitators, baffles, and associated equipment to optimize your mixing performance and gear it to meet your requirements.

In addition to traditional style agitators and baffles, De Dietrich also offers innovative new designs to further improve mixing performance. These arrangements are combined with the right drive and mechanical seal configuration to create a comprehensive mixing system that’s engineered for your unique process needs.

Key concerns within chemical and pharmaceutical processes are improving performance and reducing production costs. Agitation, mixing and heat transfer are directly linked to these obstacles.

The constant improvement of glassing techniques makes it possible to optimize the profiles of agitator blades in glass-lined steel. Our research and development teams have perfected a formulation which offers optimal resistance to highly corrosive processes, impact and abrasion that also facilitates cleaning.

De Dietrich’s wide range of agitator options include our standard, patented GlasLock agitator design or traditional one-piece construction.

Features

De Dietrich Agitators are available in an array of styles and tiers to carry out various flow patterns and regimes, handling a range of mixing objectives including:

Homogenization
Suspension
Liquid / liquid dispersion
Liquid / gas dispersion
Heat transfer
Crystallization

Advantages

Same material of construction as vessel means superior corrosion resistance.
Blade styles available to accommodate low level mixing / minimum volumes as well as products with high viscosities.
Ability to change out/adjust blades saves on cost and minimizes equipment downtime.

The drive system is the heart of all De Dietrich mixing solutions, powering the agitator to increase product movement and achieve desired mixing homogeneity of your process. Depending on your reactor size and agitation requirements, De Dietrich offers two types of drives that are designed to meet the special process needs of glass and glass-lined vessel users.

Depending on your reactor size and agitation requirements, De Dietrich offers Series 60 Drives or Lenze Drives that are designed to meet the special process needs of glass-lined vessel users. Both drive models are optimized for use over the entire working temperature range of a glass-lined reactor with a “non-metallic” shaft seal. Series 60 drives fit on GL and SA series reactors size 300 gallons and larger; Lenze drives are designed for CTJ reactors sizes 5 to 1,000 gallons. Both types of drives can be retrofitted to any major brand reactor. Explosion-proof and multiple-speed motors are available.

Series 60 Drive Advantages

Long-life, low-maintenance design
Large diameter, preloaded tapered roller bearings provide optimum blend of rigid shaft support for very low runout with low-profile design
Long L10 bearing life: 100,000 to 500,000 hours for output shaft bearings
Quality 10 helical gearing
Minimum numbers of parts, simplified construction and rugged, rigid ductile iron housing
Extremely low noise level
High drive efficiency gives lower power consumption
Compact design reduces headroom requirements, simplifies vessel piping
Infrequent oil changes (once a year is average)
Drywell construction eliminates oil leakage at output and input shafts
Submerged oil lubrication means no oil pump or slinger to fail, no grease required
Explosion-proof and multiple-speed motors available
Choice of dry-running single mechanical seals or lubricated double mechanical seals

Lenze Drive Advantages

Superior combination of value and performance in a wide range of applications
Compact design with fewer parts for easy installation and maintenance
Check, add or change oil without removing the safety guard
Largest output bearings in the size range provide unmatched L10 life (> 100,000 hours)
Unique output shaft connection reduces shaft deflection to extend seal life
Longer shaft lengths accommodate a wider range of tank configurations
Leak proof reducer design
Available from 1 to 30 HP with speeds from 11 to 125 RPM
Explosion-proof and multiple-speed motors available
Choice of dry-running single mechanical seals or lubricated double mechanical seals

Mechanical seals are a necessary part of every agitator application. Our designs are workhorses, proven with years of rigorous 24/7 use. Mechanical seals deliver a full range of rotary configurations and component materials and are built to handle virtually any level of fluid movement.

De Dietrich offers three types of seals to complement your drive system - OptiSeal, QW, and JC seals. Even in the most demanding services, you can count on our seals to provide invisible leakage, less friction (i.e. power loss), and little to no wear on seal shafts. Their flexibility accommodates shaft deflections and they save on downtime, requiring no period maintenance.

OptiSeal

The OptiSeal is a carbon-free mechanical seal that incorporates reliable vessel seal technology to meet the stringent process requirements in today’s pharmaceutical and chemical manufacturing environments. The innovative seal design, which is the standard on all De Dietrich reactors, helps users establish compliance with USP and BPE guidelines. OptiSeal can be built in FDA compliant materials with sizes also available for competitors' designs. The standard design offers the following advantages:

No carbon dust contamination, eliminates process contamination from mechanical seal face wear.
True dry-running design, balanced double cartridge seal, can be run with a barrier fluid.
GMP compliant
Minimal maintenance after installation
Cost Effective
CIP/SIP
Lowest possible consumption/leakage rate of nitrogen to process/atmosphere versus all other double seal technologies.
Pressures from full vacuum to 100 psig (4.6 bar)
Temperatures from -20°F to 350°F (-29°C to 177°C)
0 to 1.0 SCFH/inch of shaft diameter leak rate is possible