DG15-L Portable Tank Cleaning Machine

Application for Oil Tankers

The DG15-L (a professional portable orbital tank washer) is tailor-made for oil tanker cleaning, addressing core pain points like large tank volumes, heavy oil residues, and explosion risks. Its design and performance fully align with the operational needs of crude oil tankers, product tankers, and chemical tankers (oil-based cargo).

1. Key Advantages for Oil Tanker Cleaning

1.1 Adaptability to Oil Tanker Specifications

• Fits Large Tank Sizes: Oil tankers typically have tank compartments with diameters up to 15m—matching the DG15-L’s max applicable tank diameter. It works with tank openings as small as 198mm (common in tanker manholes), requiring no modifications to the tanker’s structure.

• Portable for Compartment Cleaning: Weighing only 4kg, the DG15-L is easy to carry between multiple tanker compartments (oil tankers often have 5–12 tanks). Its vertical downward installation design allows quick mounting on manholes, avoiding time-consuming fixed setup.

1.2 Effective Removal of Heavy Oil Residues

• High-Impact Jet for Oil Sludge: With a max pressure of 30 Bar and 3 long nozzles, the machine generates strong water jet impact to break down tough residues—such as caked crude oil, paraffin deposits, and asphalt-like sludge (common in tanker tanks after long-haul transport).

• 360° No Dead Zones: Programmed orbital rotation (2-plane rotation) ensures jets sweep every area of the tanker tank—covering curved walls, bottom seams, and manhole inner edges (areas where manual cleaning often misses).

• Adjustable Pressure for Different Oils:

• Low pressure (3–20 Bar): For light oil residues (e.g., gasoline, diesel).

• High pressure (up to 30 Bar): For heavy oil residues (e.g., crude oil, fuel oil).

1.3 Explosion-Proof Safety (Critical for Oil Tankers)

The DG15-L’s liquid-driven design eliminates explosion risks—a non-negotiable requirement for oil tankers (where flammable oil vapors are ubiquitous):

• No external electricity needed: Powered solely by cleaning fluid (via internal turbine gear reducer), avoiding electrical sparks (a major ignition source).

• 316L SS Corrosion Resistance: Its body is made of 316L stainless steel, which resists corrosion from crude oil, saltwater (marine environments), and oilfield cleaning chemicals (e.g., degreasers). This prevents material degradation and leakages that could trigger safety hazards.

• Static Dissipation: Optional explosion-proof versions (compliant with ATEX II 2G Ex d IIB T4 Ga / IECEx) add static-dissipative hoses and seals, neutralizing static electricity generated during cleaning (critical for preventing vapor combustion).

2. Step-by-Step Cleaning Process for Oil Tankers

1. Pre-Cleaning Preparation:

• Ventilate the tanker tank to reduce flammable vapor concentration (meet safety standards like IMO MSC.1/Circ.1432).

• Mount the DG15-L vertically on the tanker’s manhole; connect it to a high-pressure cleaning fluid line (water + oil-specific degreaser, if needed).

• Set parameters: Select high-pressure mode (20–30 Bar) for heavy oil residues; preset cleaning cycle (7–8 minutes, extended to 10 minutes for thick sludge).

2. Automated Tank Cleaning:

• The cleaning fluid drives the DG15-L’s turbine gear reducer, starting 2-plane orbital rotation.

• The 3 long nozzles spray jets that sweep from the tank’s top manhole to the bottom drain, breaking down oil residues and flushing them toward the tanker’s bottom 排污口 (sewage outlet).

• The machine’s 1% ultra-low leakage design avoids cleaning fluid waste—critical for oil tankers (where on-board water storage is limited).

3. Post-Cleaning:

• After the cycle ends, the DG15-L shuts down automatically. Disassemble it and rinse the nozzles to prevent oil residue buildup.

• Drain the tanker’s cleaning wastewater (via dedicated outlets) and inspect the tank interior (via manholes or cameras) to confirm no oil films or sludge remain—meeting cargo switching standards (e.g., from crude oil to diesel).

3. Operational Benefits for Oil Tanker Operators

• Saves Time & Labor: Replaces manual scrubbing (which takes 2–3 hours per tanker compartment) with a 7–10 minute automated cycle—cutting cleaning time by 80%.

• Reduces Environmental Risks: Ultra-low leakage (1%) and targeted jetting minimize cleaning fluid runoff, avoiding oil-contaminated water discharge (compliant with MARPOL Annex V regulations).

• Low Maintenance: The DG15-L’s separate gearbox (clog-resistant) and self-lubrication (via cleaning fluid) reduce downtime—critical for oil tankers (which require fast turnaround at ports).

Performance data of orbital tank washer:

Dimensions of DG15-L tank cleaning machine:

Cleaning process:

Application of DG15 orbital tank cleaning machine: