P&ID (chemical eng)
Native process & instrumentation diagrams for chemical engineering. Declare equipment (vessel, reactor, heat-exchanger, pump, compressor, tank, column, separator), instruments (gauges + control loops in ISA-5.1-style balloons), and piping connections between them. Supports stream tags, valves (gate, ball, check, control), and tagged process variables (PV, FV, LV, TV).
In the same space
Most users come to P&ID (chemical eng) from AutoCAD P&ID (sketches) or Visio P&ID stencils. flowss runs this engine in the browser — no install, shareable via URL, exportable to PNG / SVG / PDF / source.
Syntax at a glance
eq tank T1 "Feed" at (1,2)
eq column COL1 "Distillation" at (5,2)
line T1 COL1 stream "feed"Paste this in the Studio code pane to see P&ID (chemical eng) render live. The full grammar is at the upstream-docs link above.
Sample templates
All 6 →Feed tank → pump → column with reboiler + condenser tanks.
Continuous stirred-tank reactor with cooling jacket and level controller.
Counter-current heat exchanger with TI/FI loop.
Process and instrumentation for water treatment.
Process and instrumentation for a brewhouse from hot liquor tank through mash, lauter, kettle and whirlpool to the paraflow chiller feeding fermenter 4, with mash temperature and wort flow loops.
Instrumented flow for a food waste digestion plant from reception and depackaging through pasteurisation and the mesophilic digester to gas holder, booster and biomethane upgrading column.
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