Month: June 2023

1.Malaysia slop oil separation project introduction

1.1 Slop oil treatment design capacity requirement:5m³per hour.in put parameters:Oil: 10 – 60%,Water: 40 – 90%,Solid: 5 – 20%.

1.2 Weight & Height:Weight & height of machinery and container to comply with regulations set by Malaysia’s Road Transport Department.All equipment system needs to be in containerized

1.3 Sub-total of pre-treatment & heating module unit,Sub-total of sludge separation unit,Sub-total of miscellaneous items.Technical Standards: British/ASME Standards

Electrical Standards: MS IEC 60038 (to comply with Suruhanjaya Tenaga) ATEX Explosion proof Zone 1 to be mobilized into Oil & Gas refinery

2. Main separation treatment process of GN oil sludge treatment system

Main separation treatment equipment of the oil sludge treatment system is the three-phase decanter centrifuge GNLWS364-VFD. Its operation is based on the principle of sedimentation, that is, solid particles with specificliquid weight precipitate in a predetermined time. This principle can also be applied to two immiscible liquids with different specific gravity. When the material enters the high-speed rotating drum, the material rotates synchronously with the drum. Because of the different specific gravity, the centrifugal force is different. The solid particles with the larger specific gravity are subjected to the greatest centrifugal force, followed by the heavy phase liquid (such as water) and the light phase liquid (such as oil). So the centrifugal force is becoming less from outside to inside according to the magnitude of centrifugal force. A concentric solid layer and two liquid layers are formed. Solids are pushed out by the screw conveyor, and liquids are removed from theirrespective nozzles. Therefore, the application of three-phase decanter centrifuge can not only separate the solid in the material, but also separate the two-phase liquid with different specific gravity in the material, that is, Solid-liquid-liquid separation can be achieved.

1. Vanuatu KAWA project introduction
   • Material details for the solid phase in the kava herbal solution, the feed should contain 93 to 95% water, and the discharged solid phase should have a humidity of about 85%.Feed 6.5 solid content, weight ratio, processing capacity 1-2K liters per hour, not sure whether the disc stack centrifuge separator machine can be used.
   • The customer once again explained their processing process and the treatment effect they want to achieve. They don’t want the mud cake to be too dry, so they asked again about the angle of the half-cone angle.
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2. GN Two Phase Decanter Centrifuge Features of recommended model GNLW224ET
   • Description of working principle

The bowl and screw of the decanter centrifuge rotate to the same direction with a certain differential speed. The material is continuously introduced into the screw shaft, and then flies to the bowl after its speed highly increased. Under the action of centrifugal force field, heavy solid phase is deposited on the bowl wall to form sediment layer. The solid is continuously pushed to the cone section of the bowl and discharged through the slag outlet. The light liquid phase forms an inner liquid ring, which is continuously overflow out of the bowl from the liquid outlets at the big end of the bowl Straight section of the bowl is the clarification area, and the cone section is the extrusion drying area.

2.2 T Series Decanter Centrifuge Features

The beach angle of the T Series dewatering decanter centrifuge is 8.5 Degree, which makes the decanter centrifuge cone section longer, that is, the drying and dewatering area of the decanter is longer, which is conductive to the dewatering performance of T series decanter centrifuge, and much drier solid cakes discharged. The beach angle of 8.5 degree will make the slag discharging more smooth so as to increase the amount of slag discharging.

1. Project information and background

Feed name: Brine Slurry

Solids name Mixed salts

Feed quantity (slurry)5.0 (max. 8)m3/h

Feed density (slurry)1350 kg/m3

Liquid name Brine

Liquid composition (weight) **):NaNO3: 26%;NaCl: 5% (max: 10%)

Solids Flow1000 (max. 1100)kg/h

Liquid viscosity0.7 – 1.0

Liquid density at O.T.1’250 kg/m3

Solids content (weight)15 (10 – 25)%

Solids density (crystals) 2’000kg/m3

Solids particle size (RRSB)d’ = 0.004 – 0.4

Solids shape cubic

Operating temperature 60°C

Operating mode：continuous 24h/d

2. GN recommended Decanter Centrifuge Model is GNLW364ET

2.1 Applicable Material for T Series Decanter Centrifuge Model GNLW364ET

Drilling mud, environmental protection sewage, oily sludge, cutting fluid, sand washing water, mineral washing water, soda white mud, salt mud dewatering, magnesium aluminum emulsion, steel-making wastewater, precision casting wastewater, construction mud, tunnel mud, mine wastewater, industrial wastewater, organic wastewater, aquaculture wastewater, chemical industrial wastewater, printing and dyeing wastewater, municipal sewage, river sludge, water plant sludge, lake sludge, kaolin grading, calcium carbonate, bentonite, Silica, titanium dioxide, calcium sulfate, barium sulfate, conductive film glass polishing solution, aluminum hydroxide, cryolite, silicate, oil sand separation, landing oil, oil sludge, coal tar, inorganic fertilizer, Chinese medicine extraction such as taxus chinensis, honeysuckle and liquorice, clarification, concentration and dehydration of salt crystals, etc

2.2 GN dewatering / Thickening decanter centrifuge is T series decanter centrifuge with beach angle of 8.5 degrees. GN T series decanter centrifuge is usually used dewatering and thickening purpose. It is widely used for maximum dewatering requirements of municipal and industrial wastewater sludge. The dewatering decanter centrifuge is designed for easy separation material include large particle size, high density difference of solid and liquid, low viscosity, high concentration, high treatment capacity and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with T series decanter centrifuge.

 

1.Project back ground and Information

SCG packaging execute pulp, paper and packaging product in Thailand and ASEAN there are various waste water treatments in Banpong location.

Regarding to above subject, currently studying in dewatering equipment to handle excess wastewater sludge from both primary treatment and biological treatment.

1. Requested dewatering unit with following enquiry specification
   • Feed rate: 100 m3/hr
   • Sludge concentration: 5 %
   • Volatile suspended solid (VSS) :55%;
   • PH: 5 – 6.8
   • Operation hours per day:24 h/day
   • Sludge type / ratio:100% Bio sludge
2. Expected Performance
   • Sludge loading ~ 36 TonDS/day
   • Sludge cake Dryness :80%
   •  Polymer consumption: pending
   • Power consumption:pending

2. Proposed GN Decanter Centrifuge Model GNLW764A performance and features
   • Feeding Condition:Waste peper miliing water 100m3/hour with 2% solids by mas
   • Capacity:55 m3/h
   • Bowl Length:3328 mm
   • Bowl Diameter:760 mm
   • Max Bowl Speed:2650 RPM
   • Max G Force:3000G
   • Main Drive Motor:132KW
   • Screw Drive Motor:75KW
   • Bowl Material:Duplex Stainless Steel SS2205
   • Weight:14911.88Kg
   • Dimension:6098*1950*1912mm

3. GN Decanter Centrifuge Model GNLW764A performance and features

3.1 High Quality Technology Ensures Quality

The precision machining adopts CNC equipment, with high precision and good consistency.

After each main rotary parts are machined by high precision CNC equipment, the centrifuge is treated with three dynamic balance processing again, including the 1800RPM medium speed dynamic balance in the main rotary body component, the actual working speed high speed dynamic balance for screw and the whole machine balance, so as to ensure the stable operation of the centrifuge under the high speed working condition.

3.2 The bowl Assembly Adopts High Level Stainless Steel Material

1. The shaft caps on the two ends and the bowl are made of duplex stainless steel SUS2205 or SUS2304 by centrifugal casting, which is superior to the performance of SUS304 and SUS316.；
2. The main parts are made by centrifugal casting and die forging process to avoid intergranular corrosion and incomplete residual stress release caused by traditional welding process.