Newsline

Product case history: humidity and gelatine

April 13, 2000
/ Print / Reprints /
ShareMore
/ Text Size+
NEW BRUNSWICK, NJ — Due to its heat-sensitive nature, the drying of gelatine is a difficult and exacting process.

A scraped heat surface heat exchanger extrudes lacerated gelatine “noodles” from a gelatinous liquid, creating the greatest possible surface exposure for drying. An oscillating belt then distributes the “noodles” onto the dryer conveyor.

Just entering the gelatine market, a major chemical company in India approached Kathabar Inc. for its equipment needs. Based upon the desired production rate, the company sized and supplied a continuous gelatine dryer system and recommended a 29,000-cfm dehumidification system to be used in conjunction with the dryer.

The dehumidification equipment, positioned adjacent to the gelatine dryer, removes moisture from the air to allow for high drying efficiency. In the first zone of the dryer, 20% rh air is needed so moisture can be extracted from the gelatine by vapor pressure differential.

In subsequent dryer zones, higher temperature and humidity air completes the gelatine drying to the desired moisture content.

The air inside the dryer is moved through the gelatine bed by low horsepower fans. In each dryer zone, heating coils are used as the air is directed upward and downward through the sequential zones of the dryer.

Conveyor speed and drying temperatures vary with the gelatine concentrations and extractions. At the discharge end, the product is broken up by a rough grinder in preparation for further processing and storage.

Climate control

Complicating the process further was India’s climate, where they experience a monsoon (wet) season.

With the gelatine dryer process requiring 100% outside air, a liquid desiccant dehumidification system — capable of removing up to 150 grains of moisture from the air — was necessary to supply 20% rh, even at monsoon conditions.

During continuous, 24-hour operation of the system, 52,800 lb of water are removed each day. In effect, the system “weatherproofs” the dryer, allowing for a more consistent end product — regardless of outside weather conditions.

Another benefit of pairing the dehumidifier with continuous dryers was energy savings for the customer. Supplying dehumidified air to the dryer allows for use of waste heat from the dryer.

Adding to the savings is the use of cooling tower water as a coolant and low-pressure steam for regeneration. In this application, the system eliminates 3,980,250 Btuh or 332 ton of air conditioning refrigeration and 1,472,040 Btuh of reheat energy.

For more information regarding this installation, e-mailmmilad@kathabar.com

Did you enjoy this article? Click here to subscribe to The NEWS Magazine

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

Podcasts

NEWSMakers: Rajan Rajendran

Rajan Rajendran, newly appointed director of the Emerson Innovation Center, talks about the new $35 million facility and how it will function on the University of Dayton campus. Posted on Aug. 29.

More Podcasts

ACHRNEWS

NEWS 08-25-14 cover

2014 August 25

Check out the weekly edition of The NEWS today!

Table Of Contents Subscribe

Prohibiting HFCs

EPA is proposing a rule that would prohibit some HFCs in select refrigeration applications. Do you agree with this move?
View Results Poll Archive

HVACR INDUSTRY STORE

plumbing-hvac.gif
2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

More Products

Clear Seas Research

 

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

DON'T MISS A THING

Magazine image
 
Register today for complete access to ACHRNews.com. Get full access to the latest features, Extra Edition, and more.

STAY CONNECTED

facebook icontwitter iconyoutube iconLinkedIn i con