November/December 2024 - 12

NUT PROCESSING
The viscosity of nut butter products can make them
difficult to move through processing machinery.
Photos courtesy of HRS Heat Exchangers.
Heavy-duty heat exchanger offers solution for nut butter processing
A
popular trend necessitated some ingenuity for a
supplier of industrial thermal technology equipment.
Nut butter products are popping up on grocery
By Melinda Waldrop
Managing Editor
HRS Heat Exchangers confronted the dilemma firsthand
when a client ordered the company's R Series Scraped
shelves everywhere - from almond to macadamia to pecan,
available in gluten-free, peanut-free or plant-based.
While the variety is vast, including even seed butters,
the plethora of products share one common challenge:
All nut butters are quite viscous, turning almost solid at
low temperatures, and difficult to move through
processing machinery.
Peanut butter is at least five times thicker at room
temperature than tomato ketchup and becomes even more
viscous at colder temperatures, according to HRS Heat
Exchangers, a global thermal technology equipment
designer and manufacturer based in the U.K.
Adding stabilizers, such as partially hydrogenated
vegetable oils, to prevent oil separation can worsen the
problem, as the additives form a crystalline structure with
higher viscosity levels.
12 NOVEMBER /DECEMBER 2 0 24
Surface heat exchanger for processing a nut butter line.
" Although the R Series is purposely designed for viscous
materials, some very solid materials - like low temperature
peanut butter, - were a step too far, " Matt Hale, HRS global
key account director, said. " The thickness of the cold nut
butter was beyond the parameters of the R Series gearbox
and its mountings, and the unit we were testing failed. "
That experience drove the company's research and
development team to find a solution. The result is the HRS
RHD Series for heavy-duty applications.
The new solution maintains the benefits of the standard
series, including the continuous scraping action to enhance
the mixing of viscous products and a sealing system which
allows for the removal of individual tubes for cleaning or
maintenance. But the heavy-duty series also boasts
increased strength and durability, with a motor size
expanded from 4 kW to 7.5 kW.

November/December 2024

Table of Contents for the Digital Edition of November/December 2024

Editor's Letter
Adapting to change
In the thick of things
Innovative path to sustainability
For the greater good
Premium pineapples
Innovation Spotlight
Sustainability showcase
Advertiser Index/Calendar/Right Now On
November/December 2024 - 1
November/December 2024 - 2
November/December 2024 - 3
November/December 2024 - Editor's Letter
November/December 2024 - 5
November/December 2024 - Adapting to change
November/December 2024 - 7
November/December 2024 - 8
November/December 2024 - 9
November/December 2024 - 10
November/December 2024 - 11
November/December 2024 - In the thick of things
November/December 2024 - 13
November/December 2024 - Innovative path to sustainability
November/December 2024 - 15
November/December 2024 - 16
November/December 2024 - 17
November/December 2024 - 18
November/December 2024 - 19
November/December 2024 - For the greater good
November/December 2024 - 21
November/December 2024 - 22
November/December 2024 - 23
November/December 2024 - Premium pineapples
November/December 2024 - 25
November/December 2024 - Innovation Spotlight
November/December 2024 - 27
November/December 2024 - Sustainability showcase
November/December 2024 - 29
November/December 2024 - 30
November/December 2024 - Advertiser Index/Calendar/Right Now On
November/December 2024 - 32
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