Hydrogen Fluoride

HF  ·  20.01 g/mol

HF

Fluorinating agent and catalyst

Molecular Weight
20.01 g/mol
State
Gas/Liquid
Catalyst
None
Reactor
Rotary Kiln (pre-heated)
Hydrogen Fluoride molecular structure
2D structure

Olefinverbund Integration

Inputs
Fluorite, Sulfuric Acid
→
Product
Hydrogen Fluoride
→
Outputs
Fluorocarbons, Aluminum Fluoride

Chemistry & Engineering

ReactionCaF₂ + H₂SO₄ → 2HF + CaSO₄
ThermodynamicsEndothermic heating required
CatalystNone
Reactor classRotary Kiln (pre-heated)
NoteExtremely hazardous/corrosive.

Applications

  • Fluorocarbon production (PTFE, HFCs)
  • Alkylation catalyst (petroleum refining)
  • Metal pickling
  • Semiconductor etching

Extraterrestrial Production Pattern

  1. CaF₂ + H₂SO₄ → 2HF + CaSO₄ (300°C)
  2. Rotary kiln or fluidized bed process
  3. Condensation and distillation
  4. Anhydrous HF requires special materials

Reaction Diagram

CaF2 + H2SO4 -> 2HF + CaSO4

Unit Operations

Process steps following chemical engineering unit operation principles

#OperationDescription
1Fluorspar FeedMeter dried fluorspar to reactor
2Acid ReactionReact with H₂SO₄ in rotary kiln at 250-300°C
3Gas CoolingCool HF gas in graphite coolers
4PurificationRemove SiF₄ and SO₂ impurities
5CondensationCondense to liquid HF
6DistillationDistill to anhydrous HF (>99.9%)

S88 Batch Control Model

ISA-88 BatchML schema — simplified for educational purposes

<?xml version="1.0" encoding="UTF-8"?>
<!-- ISA-88 Batch Control Model for Hydrogen Fluoride -->
<!-- Educational schema - simplified for demonstration -->
<BatchML xmlns="http://www.wbf.org/xml/B2MML-V0600">
  
  <ProcessCell ID="HF_PLANT_CELL">
    <Description>Process cell for Hydrogen Fluoride production</Description>
    
    <Unit ID="HF_PLANT">
      <Description>Main synthesis unit</Description>
      
      <!-- Equipment Modules -->
      <EquipmentModule ID="FEEDER">
        <Description>Feeder</Description>
      </EquipmentModule>
      <EquipmentModule ID="KILN">
        <Description>Kiln</Description>
      </EquipmentModule>
      <EquipmentModule ID="COOLER">
        <Description>Cooler</Description>
      </EquipmentModule>
      <EquipmentModule ID="SCRUBBER">
        <Description>Scrubber</Description>
      </EquipmentModule>
      <EquipmentModule ID="CONDENSER">
        <Description>Condenser</Description>
      </EquipmentModule>
      <EquipmentModule ID="COLUMN">
        <Description>Column</Description>
      </EquipmentModule>
    </Unit>
  </ProcessCell>
  
  <MasterRecipe ID="HF_PLANT_RECIPE">
    <Description>Master recipe for Hydrogen Fluoride</Description>
    <ProductID>HYDROGEN_FLUORIDE</ProductID>
    
    <UnitProcedure ID="HF_PLANT_UP">
      <Description>Unit procedure for synthesis</Description>
      
      <Operation ID="OP_01">
        <Description>Operation 1</Description>
        <Phase ID="FEED">
          <Description>Feed phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_02">
        <Description>Operation 2</Description>
        <Phase ID="REACT">
          <Description>React phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_03">
        <Description>Operation 3</Description>
        <Phase ID="COOL">
          <Description>Cool phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_04">
        <Description>Operation 4</Description>
        <Phase ID="PURIFY">
          <Description>Purify phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_05">
        <Description>Operation 5</Description>
        <Phase ID="CONDENSE">
          <Description>Condense phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
      
      <Operation ID="OP_06">
        <Description>Operation 6</Description>
        <Phase ID="DISTILL">
          <Description>Distill phase</Description>
          <PhaseLogic>
            <Step ID="STEP_1"><Action>Initialize</Action></Step>
            <Step ID="STEP_2"><Action>Execute</Action></Step>
            <Step ID="STEP_3"><Action>Complete</Action></Step>
          </PhaseLogic>
        </Phase>
      </Operation>
    </UnitProcedure>
  </MasterRecipe>
  
</BatchML>
Process CellPhysical grouping of all production equipment
UnitMajor equipment performing the synthesis
Equipment ModulesIndividual devices: reactors, columns, absorbers
PhasesLowest control level: REACT, SEPARATE, PURIFY
This Synthesis Module is part of the 100chemicals Olefinverbund — an integrated chemical production network designed for extraterrestrial civilization on Moon and Mars.

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