Banyak pengusaha - pengusaha di Indonesia yg memproses
bahan baku butir gandum impor yg kualitasnya sangat jelek (warna kuning, ash
content tinggi, berbau apek), dimana di negara asalnya menjadi limbah. Di
Indonesia bahan baku ini dibeli dengan harga murah dan diolah dengan proses
sederhana shg menjadikan profit yg menggiurkan.
Inilah hasil riset saya mengenai ini.
"Many businessmans in Indonesia
that processes raw material import such as wheat seed which low level quality (yellowish,
high ash content and bad smell) and this is tobe waste in origin country. In
Indonesia this raw material is sold with low price and processed simplely so be
interest profit.
This is my reserach."
Langkah - langkah proses pemutihan butir gandum keruh SKALA
LABORATORIUM adalah :
- Menyiapkan
butir gandum keruh secukupnya
- Menyiapkan
ZAT X (bisa powder & liquid) liquid
konsentrasi 30 % sedangkan powder 8% (pembuatan mengacu pada prinsip
pengenceran menggunakan air, karena rasio pemakaian adalah 1 kg powder :
2,5 L liquid
- Memasukkan
butir gandum ke larutan tsb
- Mengaduk
sekitar 2 - 3 menit agar gas yg terkandung dlm ZAT X keluar
- Setelah
dilihat warna sudah mulai memudar keputihan kemudian memisahkan butir
gandum dengan larutan
- Mengeringkan
butir gandum hingga kering dan melihat perubahan mencolok sebelum dan
sesudah diberi perlakuan
- Untuk
mendapatkan warna mengkilap tetapi warna putih sedikit pudar langkahnya
adalah mencuci butir gandum kemudian mengeringkannya
"Steps bleaching process of wheat
seed laboratory scale are :
- Preparing wheat seed
- Preparing X substance (powder & liquid) liquid concentration 30 %
and powder 8% (making refer to the principle dillution with water, due to
ratio consumption is 1 kg powder : 2,5 L liquid
- Entering wheat seed to the solution
- Stirring about 2 - 3 minutes so contain X substance can be released
- After known whitish color then separate wheat seed with solution
- Drying wheat seed and see changing after and before treated
- To get a clear color but little pale white, the step is washing wheat
seed then drying"
Hasilnya seperti terlihat :
 |
| ZAT X Powder Tanpa Pencucian |
 |
| ZAT X Powder Dg Pencucian |
 |
| ZAT X Liquid Tanpa Pencucian |
 |
| ZAT X Liquid dg Pencucian |
Proses SKALA INDUSTRI adalah :
Penjelasan Process Flow Diagram Pemutihan Butir Gandum
dg ZAT X Liquid :
Butir gandum keruh (umpan) dimasukkan di Hopper
(bisa menggunakan Bucket Elevator jika tempat tinggi / manual) utk
menjaga aliran continue, kemudian dg Screw Conveyor I dimasukkan di Mixing
Tank. Bersamaan dg itu, dimasukkan ZAT X liquid dg Pompa Sentrifugal dari
drum penyimpanan ke Mixing Tank yg dilengkapi dg pengaduk. Kemudian
setelah 5 - 10 menit pengadukan, limbah cairan di keluarkan dan butir gandum
dialirkan ke Rotary Dryer dg Screw Conveyor II. Rotary Dryer
berfungsi sbg pengering dan media pemanas adalah Steam Boiler yg
menggunakan air beraliran listrik shg menghasilkan steam. Aliran steam counter
current yg dimaksudkan agar butir gandum tdk lagsung kontak dg suhu tinggi yg
bisa menyebabkan biji bengkak jadi panas yg diterima pelan2 semakin tinggi. Rotary
Dryer dilengkapi Cyclone I utk memisahkan kemungkinan gas / material
yg terikut dan akan mengembalikan butir gandum terikut ke proses selanjutnya
dan gas akan dibuang. Setelah melewati Rotary Dryer maka umpan masuk ke Rotary
Cooler dg Screw Conveyor III, disini akan dilakukan pendinginan
produk. Rotary Cooler menggunakan media pendingin udara yg didapatkan
dari udara bertekanan kompresor dan juga dilengkapi dg Cyclone II. Arah
aliran counter current agar umpan semakin lama semakin dingin seiring berjalan
di alat dan produk yg didapatkan ditampung di bak penampung.
"Explanation process flow diagram
about bleaching of wheat seed with liquid X substance :
Bad wheat seed (feed) is entered into
hopper (can use bucket elevator if high place / manual) to keep continuity
flow, then with screw conveyor I is entered into mixing tank. With it, entered
liquid X substance with centrifugal pump from container drum into stireed
mixing tank. Thus, after 5 - 10 minutes stirring, liquid waste is exhausted and
wheat seed is transported into rotary dryer with screw conveyor II. Rotary dryer
have function as dryer and heating media is steam boiler which use electric
coil so that produce steam. Steam flow is counter current means wheat seed
indirect contact with high temperature can cause seed broken so accepted
temperature slowly to higher temperature. Rotary dryer is equipped with cyclone
I to separate gas / material entrained and will return wheat seed entrained to
the next process and gas will be discarded. After passing rotary dryer entering
feed to the rotary cooler with screw conveyor III, here will be done cooling
product. Rotary cooler using air as cooling media and derived from air
compressed from compressor and also equipped with cyclone II. Flow direction is
counter current so feed smore and more cool with flow in instrument and product
transported into container drum."
Penjelasan Process Flow Diagram Pemutihan Butir Gandum
dg ZAT X Powder :
Butir gandum keruh (umpan) dimasukkan di Hopper I
(bisa menggunakan Bucket Elevator jika tempat tinggi / manual)
utk menjaga aliran continue, kemudian dg Screw Conveyor I dimasukkan
di Mixing Tank. Bersamaan dg itu, dimasukkan ZAT X Powder yg ditampung di Hopper II ke
Mixing Tank. Mixing Tank dilengkapi pengaduk dan dilakukan penambahan air
yg besarnya setara ZAT X 30% .Kemudian setelah 5-10 menit
pengadukan, limbah cairan di keluarkan dan butir gandum dialirkan ke Rotary
Dryer dg Screw Conveyor II. Rotary Dryer berfungsi
sbg pengering dan media pemanas adalah Steam Boiler yg
menggunakan air yg dialiri listrik shg menhasilkan steam. Aliran steam counter
current yg dimaksudkan agar butir gandum tdk lagsung kontak dg suhu tinggi yg
bisa menyebabkan biji bengkak jadi panas yg diterima pelan2 semakin
tinggi. Rotary Dryer dilengkapi Cyclone I utk
memisahkan kemungkinan gas / material yg terikut dan akan mengembalikan butir
gandum terikut ke proses selanjutnya dan gas akan dibuang. Setelah
melewati Rotary Dryer maka umpan masuk ke Rotary
Cooler dg Screw Conveyor III, disini akan dilakukan
pendinginan produk. Rotary Cooler menggunakan media pendingin
udara yg didapatkan dari udara bertekanan kompresor dan juga dilengkapi
dg Cyclone II. Arah aliran counter current agar umpan semakin lama
semakin dingin seiring berjalan di alat dan produk yg didapatkan ditampung di
bak penampung.
"Explanation process flow diagram
about bleaching of wheat seed with powder X substance :
Bad wheat seed (feed) is entered into
hopper 1 (can use bucket elevator if high place / manual) to keep continuity
flow, then with screw conveyor I is entered into mixing tank. With it, entered
X substance and contained in hopper II. Mixing tank is equipped stirrer and
done adding water equal X substance 30 %. Thus, after 5 - 10 minutes stirring,
liquid waste is exhausted and wheat seed is transported into rotary dryer with
screw conveyor II. Rotary dryer have function as dryer and heating media is
steam boiler which use electric coil so that produce steam. Steam flow is
counter current means wheat seed indirect contact with high temperature can
cause seed broken so accepted temperature slowly to higher temperature. Rotary
dryer is equipped with cyclone I to separate gas / material entrained and will
return wheat seed entrained to the next process and gas will be discarded.
After passing rotary dryer entering feed to the rotary cooler with screw
conveyor III, here will be done cooling product. Rotary cooler using air as
cooling media and derived from air compressed from compressor and also equipped
with cyclone II. Flow direction is counter current so feed smore and more cool
with flow in instrument and product transported into container drum."
Referensi : Riset probadi pada departement R&D industri kimia
ARTIKEL TERKAIT :
1. Pemutihan dan Penghilangan Bau Apek Tepung (Terigu, Tapioka, Gandum, Beras)
2. Pemutihan dan Pengawetan Susu Kedelai Powder
3. Pemutihan Gula Kelapa Merah BS / Reject / Rekondisi
