PRE-HEATING MACHINE AT PEELING ROOM
Intersnack Cashew Company
Tay Ninh Factory
Composed by: Phong Le
Revised: Hung Dang
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Process R&D Optimization
Overview
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Process R&D Optimization
Intersnack
Group
Intersnack Cashew
Company
1. Overview
❑ Current Situation:
1)
The testa is separated by the impact between the spring shaft and the kernels inside the rotating drum.
2)
The thermal and moisture treatment process
3)
•
The peeling efficiency is improved and supported by the preceding Borma process.
•
Re-moisture before the peeling helps reduce the %broken during peeling
The heat and moisture treatment significantly impacts the efficiency of the peeling process by creating a gap between the
testa and the kernel while maintaining the kernel's elasticity
❑ Approaching strategy: Selective, localized heat application to the testa through a rapid pre-heating process retains the
moisture (elasticity) in the kernel, increases the GAP between the kernel and the testa,
and enhances the testa's brittleness.
Kernel after
Borma
Cooling
Re-moisture
Current
New process
Peeling
Peeling
Pre-heating
Pre-heating machine
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Process R&D Optimization
Intersnack Cashew Company
2. Operating principle of Pre-heating machine
❑ The operating principle of the machine is similar to the Borma (Vietmold) system.
1) Steam is used to heat four radiators (arranged in two lines), with six diffuser fans positioned in the middle of the radiators
and eight air inlets.
2) The steam pipe is equipped with a pressure-reducing valve and a solenoid valve, controlled by a temperature sensor inside
the pre-heating system. The system also includes a water recovery mechanism with a steam trap.
3) The machine comprises two chambers:
• Chamber 1: This is the heating system, containing the radiators and fans.
• Chamber 2: This is the kernel processing area, which utilizes a trolley or conveyor system. The kernels remain stationary
during the treatment process.
4) For the conveyor model. The two chambers are interconnected, allowing temperature to diffuse from Chamber 1 to Chamber
2 through the fans.
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Process R&D Optimization
Intersnack Cashew Company
Installation plan
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Process R&D Optimization
Intersnack
Group
Intersnack Cashew
Company
3. Installation layout
❑ Pre-heating machine dimension
• L x W x H: 10999 x 1700 x 3000mm
• Door: the width is 800mm/door
❑ Pre-heating position: At Peeler no.1
• Remove the Bathpeeler machine and relocate Peeler
no.1 to the Bathpeeler machine position
• The pneumatic for Peeler no.1 re-uses the Bath Peeler
and the same in/out points as the existing Peeler
• Installation Pre-heating between Peeler no.2 and Panel
wall with a distance of 1200mm
• Install 01 more 2-ton hopper at the output Pre-heating
machine and Bypass conveyor
❑ Connect to Peelling system: Conveyor Input and Output
06 Peeler: Move the according to Peeler no.1 – Not modify
❑ Connect to Calibration: Extend the existing conveyor belt
by 2.5m
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Process R&D Optimization
Intersnack Cashew Company
4. Relocate Peeler no.1
Before
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Process R&D Optimization
After
Intersnack Cashew Company
5. Full view and connection Peelling machine room
❑ Steam input: Steam input from the Boiler, the maintenance team will set up a connection point at the Preheating machine.
❑ Electrical: The power supply is taken from the main electrical cabinet of the Peeling room
❑ 08 air outlet: Combine into one pipe, then go up the panel ceiling and discharge outside
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Intersnack Cashew Company
6. Condensate
❑ Installation 01 tank 60L (Capacity of the machine ~1 L/h)
•
01 water pipe add 01 pump on the Panel ceiling go out Drain hose of humidifier
•
Water tank equipped with automatic pump float when water accumulates about 50L, it will automatically pump to the
water treatment pit.
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Process R&D Optimization
Intersnack Cashew Company
7. Outcome
❑ Pre-heating machine
1. Introducing an additional pre-heating step before the peeling process, with a vendor commitment to reduce the
%Unpeel by 2% compared to the normal process, is a highly feasible solution. This aligns well with the peeling
machine's operational concept and efficiency goals.
2. With an estimated production volume of ~300 MT/month, implementing this new process could result in an reduction
of ~6 MT/month in Unpeel kernel output.
3. Additionally, adjusting kernel moisture levels will help balance moisture loss during the subsequent processing stage
(TMPL machine), ensuring optimal kernel quality and efficiency throughout the production process.
❑ Evaluation Method:
1. Utilize one Borma machine equipped with 08 trolleys under identical conditions.
2. Run 04 trolleys with the normal process and 04 trolleys with the new pre-heating process.
3. Compare the %Unpeel at the peeling machine output to evaluate the effectiveness of the new process.
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Process R&D Optimization
Intersnack Cashew Company
THANK YOU
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Process R&D Optimization