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This process flow diagram (PFD) of a typical crude oil distillation unit as used in petroleum crude oil refineries was redrawn from Wikipedia file: Crude Oil Distillation Unit.png. [en.wikipedia.org/ wiki/ File:Crude_ Oil_ Distillation_ Unit.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"An oil refinery or petroleum refinery is an industrial process plant where crude oil is processed and refined into more useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene and liquefied petroleum gas. Oil refineries are typically large, sprawling industrial complexes with extensive piping running throughout, carrying streams of fluids between large chemical processing units. In many ways, oil refineries use much of the technology of, and can be thought of, as types of chemical plants. The crude oil feedstock has typically been processed by an oil production plant. There is usually an oil depot (tank farm) at or near an oil refinery for the storage of incoming crude oil feedstock as well as bulk liquid products.
An oil refinery is considered an essential part of the midstream side of the petroleum industry." [en.wikipedia.org/ wiki/ Oil_ refinery]
The process flow diagram (PFD) example "Crude oil distillation" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
Process flow diagram (PFD)
Process flow diagram (PFD), vapor, horizontal, jacketed vessel, vaporizing equipment, heater, cooler, heat exchanger, intersecting flowlines, fired heater, column, centrifugal pump, air-blown, cooler,
This is a schematic process flow diagram of the processes used in a typical oil refinery.
This process flow diagram (PFD) example was redesigned from the Wikimedia Commons file: RefineryFlow.png. [commons.wikimedia.org/ wiki/ File:RefineryFlow.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"An oil refinery or petroleum refinery is an industrial process plant where crude oil is processed and refined into more useful products such as petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene and liquefied petroleum gas. Oil refineries are typically large, sprawling industrial complexes with extensive piping running throughout, carrying streams of fluids between large chemical processing units. In many ways, oil refineries use much of the technology of, and can be thought of, as types of chemical plants. The crude oil feedstock has typically been processed by an oil production plant. There is usually an oil depot (tank farm) at or near an oil refinery for the storage of incoming crude oil feedstock as well as bulk liquid products.
An oil refinery is considered an essential part of the downstream side of the petroleum industry." [Oil refinery. Wikipedia]
The PFD example "Process flow diagram - Typical oil refinery" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
Process Flow Diagram (PFD)
Process Flow Diagram (PFD), column,

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams Chemical and Process Engineering

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams
This chemical engineering solution extends ConceptDraw PRO v.9.5 (or later) with process flow diagram symbols, samples, process diagrams templates and libraries of design elements for creating process and instrumentation diagrams, block flow diagrams (BFD
This divided bar chart sample shows the petroleum products yielded from 1 barrel of crude oil in California in 2004. It was drawn using data from the chart on the California Energy Almanac website. [energyalmanac.ca.gov/ gasoline/ whats_ in_ barrel_ oil.html]
"Petroleum products are useful materials derived from crude oil (petroleum) as it is processed in oil refineries. Unlike petrochemicals, which are a collection of well-defined usually pure chemical compounds, petroleum products are complex mixtures. The majority of petroleum is converted to petroleum products, which includes several classes of fuels.
According to the composition of the crude oil and depending on the demands of the market, refineries can produce different shares of petroleum products. The largest share of oil products is used as "energy carriers", i.e. various grades of fuel oil and gasoline. These fuels include or can be blended to give gasoline, jet fuel, diesel fuel, heating oil, and heavier fuel oils. Heavier (less volatile) fractions can also be used to produce asphalt, tar, paraffin wax, lubricating and other heavy oils. Refineries also produce other chemicals, some of which are used in chemical processes to produce plastics and other useful materials. Since petroleum often contains a few percent sulfur-containing molecules, elemental sulfur is also often produced as a petroleum product. Carbon, in the form of petroleum coke, and hydrogen may also be produced as petroleum products. The hydrogen produced is often used as an intermediate product for other oil refinery processes such as hydrocracking and hydrodesulfurization." [Petroleum product. Wikipedia]
The chart example "Petroleum products yielded from one barrel of crude oil" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Divided Bar Diagrams solution from the Graphs and Charts area of ConceptDraw Solution Park.
Divided bar chart
Divided bar chart, divided bar diagram,

Process Diagrams

ConceptDraw PRO diagramming and vector drawing software extended with Chemical and Process Engineering Solution from the Industrial Engineering Area of ConceptDraw Solution Park offers you the set of useful tools for easy drawing various Process Diagrams.
This process flow diagram (PFD) example shows an amine treating system for the removal of gaseous hydrogen sulfide from gas streams. It is used in oil refineries and chemical plants. This PFD sample was redesigned from the Wikimedia Commons file: AmineTreating.png. [commons.wikimedia.org/ wiki/ File:AmineTreating.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"Amine gas treating, also known as gas sweetening and acid gas removal, refers to a group of processes that use aqueous solutions of various alkylamines (commonly referred to simply as amines) to remove hydrogen sulfide (H2S) and carbon dioxide (CO2) from gases. It is a common unit process used in refineries, and is also used in petrochemical plants, natural gas processing plants and other industries.
Processes within oil refineries or chemical processing plants that remove hydrogen sulfide are referred to as "sweetening" processes because the odor of the processed products is improved by the absence of hydrogen sulfide. An alternative to the use of amines involves membrane technology. Membranes are attractive since no reagents are consumed.
Many different amines are used in gas treating:
Diethanolamine (DEA),
Monoethanolamine (MEA),
Methyldiethanolamine (MDEA),
Diisopropanolamine (DIPA),
Aminoethoxyethanol (Diglycolamine) (DGA).
The most commonly used amines in industrial plants are the alkanolamines DEA, MEA, and MDEA. These amines are also used in many oil refineries to remove sour gases from liquid hydrocarbons such as liquified petroleum gas (LPG)." [Amine gas treating. Wikipedia]
The PFD example "Amine treating unit schematic diagram" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
Process Flow Diagram (PFD)
Process Flow Diagram (PFD), kettle, reboiler, heater, cooler, diaphragm valve, dashed mid-line, indicator, discrete instrument, column, closed tank, centrifugal pump,

Process Engineering

ConceptDraw PRO diagramming and vector drawing software supplied with Chemical and Process Engineering Solution from the Industrial Engineering Area of ConceptDraw Solution Park is powerful and effective process engineering software.

Process Flow Diagram

A Process Flow Diagram (PFD) is a diagram which shows the relationships between the main components in a system. Process Flow Diagrams are widely used by engineers in chemical and process engineering, they allows to indicate the general flow of plant process streams and equipment, helps to design the petroleum refineries, petrochemical and chemical plants, natural gas processing plants, and many other industrial facilities.
ConceptDraw PRO diagramming and vector drawing software extended with powerful tools of Flowcharts Solution from the "Diagrams" Area of ConceptDraw Solution Park is effective for drawing: Process Flow Diagram, Flow Process Diagram, Business Process Flow Diagrams.
This PFD of jet fuel mercaptan oxidation treating was redrawn from Wikipedia file: ConvLPGMerox.png. [en.wikipedia.org/ wiki/ File:ConvKeroMerox.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported icense. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"Merox is an acronym for mercaptan oxidation. It is a proprietary catalytic chemical process developed by UOP used in oil refineries and natural gas processing plants to remove mercaptans from LPG, propane, butanes, light naphthas, kerosene and jet fuel by converting them to liquid hydrocarbon disulfides.
The Merox process requires an alkaline environment which, in some of the process versions, is provided by an aqueous solution of sodium hydroxide (NaOH), a strong base, commonly referred to as caustic. In other versions of the process, the alkalinity is provided by ammonia, which is a weak base.
The catalyst in some versions of the process is a water-soluble liquid. In other versions, the catalyst is impregnated onto charcoal granules.
Processes within oil refineries or natural gas processing plants that remove mercaptans and/ or hydrogen sulfide (H2S) are commonly referred to as sweetening processes because they results in products which no longer have the sour, foul odors of mercaptans and hydrogen sulfide. The liquid hydrocarbon disulfides may remain in the sweetened products, they may be used as part of the refinery or natural gas processing plant fuel, or they may be processed further.
The Merox process is usually more economical than using a catalytic hydrodesulfurization process for much the same purpose." [en.wikipedia.org/ wiki/ Merox]
The process flow diagram (PFD) example "Jet fuel mercaptan oxidation treating" was drawn using the ConceptDraw PRO software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
Process flow diagram (PFD)
Process flow diagram (PFD), gate valve, electrically insulated, column, centrifugal pump,

Types of Flowcharts

A Flowchart is a graphically representation of the process, algorithm or the step-by-step solution of the problem. There are ten types of Flowcharts. Using the Flowcharts solution from the Diagrams area of ConceptDraw Solution Park you can easy and quickly design the Flowchart of any of these types.
How to Simplify Flow Charting
How to Simplify Flow Charting
This PFD sample was redesigned from the Wikipedia file: NaturalGasCondensate.png.
"This is a schematic flow diagram of a typical facility for separating and recovering liquid condensate from raw natural gas."
[en.wikipedia.org/ wiki/ File:NaturalGasCondensate.png]
"Natural-gas condensate is a low-density mixture of hydrocarbon liquids that are present as gaseous components in the raw natural gas produced from many natural gas fields. It condenses out of the raw gas if the temperature is reduced to below the hydrocarbon dew point temperature of the raw gas.
The natural gas condensate is also referred to as simply condensate, or gas condensate, or sometimes natural gasoline because it contains hydrocarbons within the gasoline boiling range. Raw natural gas may come from any one of three types of gas wells:
(1) Crude oil wells - Raw natural gas that comes from crude oil wells is called associated gas. This gas can exist separate from the crude oil in the underground formation, or dissolved in the crude oil.
(2) Dry gas wells - These wells typically produce only raw natural gas that does not contain any hydrocarbon liquids. Such gas is called non-associated gas.
(3) Condensate wells - These wells produce raw natural gas along with natural gas liquid. Such gas is also non-associated gas and often referred to as wet gas." [Natural-gas condensate. Wikipedia]
The process flow diagram example "Natural gas condensate - PFD" was drawn using the ConceptDraw PRO software extended with the Chemical and Process Engineering solution from the Chemical and Process Engineering area of ConceptDraw Solution Park.
Process flow diagram (PFD)
Process flow diagram (PFD), vapor, horizontal, jacketed vessel, vaporizing equipment, reducer, off-sheet, pipelines, heater, cooler, diaphragm valve,
HelpDesk

How to Draw a Chemical Process Flow Diagram

Process Flow Diagram widely used in modeling of processes in the chemical industry. A Chemical Process Flow diagram (PFD) is a specialized type of flowchart. With the help of Chemical Process Flow Diagram engineers can easily specify the general scheme of the processes and chemical plant equipment. Chemical Process Flow Diagram displays the real scheme of the chemical process, the relationship between the equipment and the technical characteristics of the process. Chemical Process Flow Diagram illustrates the connections between the basic equipment as well as the overall structure of pipelines and other supporting equipment. The purpose of the PFD is to build the image of the basic idea of ​​the chemical process. ConceptDraw PRO together with its Chemical and Process Engineering solution delivers the possibility to design Chemical Process Flow diagrams. It is designed for chemical industry engineers and designers.
The vector stencils library "Instruments" contains 72 symbols of control instruments and measuring devices: meters and gauges, and callouts, text boxes, and inserts.
Use these shapes to create annotated process flow diagrams (PFD), flow control, manufacturing processes, and distribution system diagrams.
"Process control is an engineering discipline that deals with architectures, mechanisms and algorithms for maintaining the output of a specific process within a desired range.
Process control is extensively used in industry and enables mass production of continuous processes such as oil refining, paper manufacturing, chemicals, power plants and many other industries. Process control enables automation, with which a small staff of operating personnel can operate a complex process from a central control room." [Process control. Wikipedia]
The example "Design elements - Instruments" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Chemical and Process Engineering solution from the Engineering area of ConceptDraw Solution Park.
Process control instrument symbols
Process control instrument symbols , vortex sensor, venturi, flow nozzle, thermometer, strain gauge, pressure, steam traced, steam traced instrument, rotameter, recorder, propeller meter, pressure gauges, pressure gauge, operator box, light, level meter, indicator, discrete instrument, indicator, generic utility, flowmeter, diamond, dashed mid-line, indicator, discrete instrument, correcting element, converter, computer, computer function, PLC, programmable logic control, NOT gate, CRT, shared display, CRT,  shared display, AND gate,  recorder,