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Food Industry

FOOD INDUSTRY

Outcome:

- Increased solids content commanding higher prices, eliminated clogging

Product Produced:

- Instant milk

Background Information:

- Relatively large firm with a number of modern plants in operation. This particular installation produces instant milk with a large agglomerated particle characteristic

Plant Equipment:

- The dryer is a horizontal type, but has been converted to a square bottom fluidized bed design. Originally an 8 nozzle unit, two nozzles are now used.

Delavan Recommended:

- SDX 3,5 Range of Nozzles

Results of operation with Delavan SDX Nozzle

- Since the conversion, the system has been producing 2000 pounds per hour of a product with 48% solids at a pressure of 1500 psi. The volume of instant milk produced per hour has increased from a previous 35% to 50% even though the solids content has been increased. No nozzle clogging has been experienced, and they are now in a position to command a more favourable price for their product.

Outcome:

- Reduced pressure from 5500 psi to 3000 psi, increased quality of product, reduced downtime with fewer replacements

Product Group:

- Foods

Product Produced:

- Cheese Whey

Background Information:

- The installation is located at the plant of a diversified producer of milk and cheese products

Plant Information:

- Single nozzle in a vertical dryer

Delavan Recommended:

- SDX 3, 5 Range of Nozzles

Results of Operation with Delavan SDX Nozzle:

- The single fluid hydraulic SDX Nozzle was specified by the dryer manufacturer because of previous exceptional performance on similar dry products. At the start up in 1961 an operating pressure of 5500 psi was though to be necessary by the customer. At our recommendation the pressure was reduced to 3000 psi on this very abrasive product. The quality of the dry powder has remained high, and the requirement for replacement parts has been reduced to 6-8 month intervals.

Outcome:

- Increased nozzle from a competitors 6 hours, to 100 hours using a Delavan SDX Nozzle

Product Group:

- Foods

Product Produced:

- Enzymes

Background Information:

- This application is with a nationally known firm producing enzymes for use in detergents

Plant Equipment:

- Single nozzle in a vertical dryer

Delavan Recommended:

- SDX 3, 5 Range of Nozzle

Results of Operation with Delavan SDX Nozzle:

- The installation began with the exclusive use of the SDX Nozzle after poor pilot plant experience on a conventional competitors nozzle. Pilot plant nozzle life was approximately 6 hours. On the production unit the Delavan SDX Nozzle life is well over 100 hours on this very difficult feed stock.

Outcome:

- Huge Savings! Less nozzles, reduced pressure, less downtime, reduced wear.

Product Group:

- Foods

Product Produced:

- Dry Skim Milk

Background Information:

- The customer is producing a dry skim milk powder in accordance with a tight government specification for overseas use. Operations are normally run on a 24 hour a day basis with very close scheduling.

Plant Equipment:

- A conventional 16 nozzle horizontal dryer is used to produce approximately 3000 pounds of dry product per hour

Operating Conditions with Existing Equipment:

- At 42% solids in the feed material the conventioanl nozzles used to require constant cleaning and maintenance. There was a man assigned full time to perform this work. An associated problem of wall wetting was also being experience at their operating pressure of 3500 psi

Delavan Recommended:

- SDX 3, 5 Range of Nozzles

Results of Operation with Delavan SDX Nozzle:

- Reducing the number of nozzles to 10, wall wetting was eliminated, whilst production was actually increased. The pump pressure was lowered to improve long run performance. Nozzle cleaning is now only done at the end of a run, and the employee has been reassigned to more productive duties. As and added benefit the bulk density and bag filling characteristics of the dry powder were substantially improved.