dầu nặng

Dầu nặng thường được sử dụng làm nhiên liệu cho các tàu biển lớn.

Definition

1. Noun:
   • Heavy oil: A general term for viscous, dense petroleum fractions or residual fuels obtained after the distillation of crude oil. They are characterized by high boiling points and are typically used as industrial fuel or for further processing.
   • Residual fuel oil: Specifically refers to the thick, tar-like residue left after lighter hydrocarbons (like gasoline and diesel) are distilled from crude oil. It is often used in large ship engines (bunker fuel) and power stations.

Usage Examples

• Noun:
  • Dầu nặng thường được sử dụng làm nhiên liệu cho các tàu biển lớn. (Heavy oil is often used as fuel for large ocean-going vessels.)
  • Nhà máy điện này đốt dầu nặng để phát điện. (This power plant burns residual fuel oil to generate electricity.)
  • Giá dầu nặng biến động phụ thuộc vào nhu cầu công nghiệp. (The price of heavy oil fluctuates depending on industrial demand.)

Advanced Usage

• In the petroleum industry, "dầu nặng" is a key category distinct from "dầu nhẹ" (light oil). Its high viscosity often requires heating before it can be pumped or burned efficiently.
• The term can also colloquially refer to any thick, low-grade oil in non-technical contexts.

Variants and Related Words

• Dầu nhiên liệu nặng (n): Heavy fuel oil (HFO), a more specific technical term.
  • Tàu chuyển sang sử dụng dầu nhiên liệu nặng khi ra khơi. (The ship switched to using heavy fuel oil when heading out to sea.)
• Dầu đáy (n): Bottom oil/residue, referring to the residual bottom product from a distillation column.
• Dầu nhẹ (n): Light oil, its common counterpart.

Synonyms

• Residual fuel oil
• Bunker fuel (specifically for maritime use)
• Heavy fuel oil (HFO)
• Fuel oil No. 6 (a common industrial classification)

Related Terms

• Chưng cất (Distillation): The refining process that separates crude oil into components, producing "dầu nặng" as a residue.
• Độ nhớt (Viscosity): A key property of "dầu nặng," describing its thickness and resistance to flow.
• Nhiên liệu đốt lò (Furnace fuel): A common application for heavy oil.