Perancangan Ulang Coal Gate Pada Boiler Chain Grate Kapasitas 20 Ton/Jam Di PT Sopanusa

Atho'ulloh, Hafizh Naufal (2025) Perancangan Ulang Coal Gate Pada Boiler Chain Grate Kapasitas 20 Ton/Jam Di PT Sopanusa. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Boiler chain grate adalah jenis boiler dengan sistem grate bergerak untuk mengangkut bahan bakar padat melalui furnace. Coal gate berfungsi mengatur aliran distribusi batu bara dari hopper ke furnace. Pada boiler chain grate kapasitas 20 ton/jam di PT Sopanusa, coal gate existing mengalami kegagalan mekanis akibat kerusakan komponen pada roller chain, poros, dan bearing, sehingga tidak dapat beroperasi sebagai pengatur distribusi batu bara.
Untuk mengatasi permasalahan tersebut, diperlukan perancangan ulang coal gate yang sesuai pada hopper boiler chain grate kapasitas 20 ton/jam di PT Sopanusa. Komponen utama seperti rantai, sprocket, worm gear, poros, bearing, dan pasak pada coal gate perlu dirancang ulang untuk menghindari kegagalan mekanis pada coal gate. Setelah melakukan perancangan komponen utama pada coal gate akan memperoleh desain coal gate yang sesuai dengan konstruksi boiler chain grate.
Hasil perancangan ulang coal gate didapatkan pada komponen rantai pengangkat dengan tipe Chain Grade 80 diameter 4 mm dengan diameter sprocket 320,92 mm, worm gear dengan rasio 30:1 menggunakan material hardened steel pada worm dan phosphor bronze pada gear, poros dengan material S45C diameter 60 mm, bearing menggunakan single row deep groove ball bearing nomor unit ASB Bearing UCP 212, dan pasak dengan material SAE 1045 dimensi 60x20x12 mm untuk mencukupi mekanisme coal gate manual pada boiler chain grate kapasitas 20 ton/jam di PT Sopanusa.
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A chain grate boiler is a type of boiler with a moving grate system to transport solid fuel through the furnace. The coal gate regulates the distribution flow of coal from the hopper to the furnace. In the 20 ton/hour capacity chain grate boiler at PT Sopanusa, the existing coal gate experienced mechanical failure due to damage to components in the roller chain, shaft, and bearings, rendering it unable to function as a coal distribution regulator.
To address this issue, a redesign of the coal gate is required for the 20 tons/hour capacity chain grate boiler hopper at PT Sopanusa. Key components such as the chain, sprocket, worm gear, shaft, bearings, and keys on the coal gate need to be redesigned to prevent mechanical failure of the coal gate. After redesigning the main components of the coal gate, a design suitable for the chain grate boiler construction will be obtained.
The redesigned coal gate components include a lifting chain of Chain Grade 80 with a diameter of 4 mm and a sprocket diameter of 320.92 mm, a worm gear with a ratio of 30:1 using hardened steel for the worm and phosphor bronze for the gear, a shaft made of S45C steel with a diameter of 60 mm, bearings using single-row deep groove ball bearings with the unit number ASB Bearing UCP 212, and keys made of SAE 1045 material with dimensions of 60x20x12 mm to accommodate the manual coal gate mechanism on the 20 tons/hour capacity boiler chain grate at PT Sopanusa.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Coal Gate, Elemen Mesin, Mekanisme Angkat, Lifting Mechanism, Machine Element
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ230 Machine design T Technology > TS Manufactures > TS171 Product design T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning)
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Hafizh Naufal Atho'ulloh
Date Deposited:	30 Jul 2025 03:42
Last Modified:	30 Jul 2025 03:42
URI:	http://repository.its.ac.id/id/eprint/123703

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