Methyl Chloride

CH₃Cl · 50.49 g/mol

CH₃Cl

Intermediate for silicones and quaternary ammonium compounds

Molecular Weight

50.49 g/mol

State

Gas

Catalyst

Alumina or Zinc Chloride

Reactor

Gas phase or Liquid phas

Methyl Chloride molecular structure — 2D structure

Olefinverbund Integration

Inputs

Methanol, Hydrochloric Acid

→

Product

Methyl Chloride

→

Outputs

Silicones, Cellulose Ethers

Chemistry & Engineering

Reaction	`CH₃OH + HCl → CH₃Cl + H₂O`
Thermodynamics	Exothermic hydrochlorination
Catalyst	Alumina or Zinc Chloride
Reactor class	Gas phase or Liquid phase
Note	Key entry to Direct Synthesis of silicones.

Applications

Silicone production (methylchlorosilanes)
Quaternary ammonium compounds
Methyl cellulose production
Agricultural chemicals

Extraterrestrial Production Pattern

CH₃OH + HCl → CH₃Cl + H₂O (gas phase, 300-380°C)
Alumina or ZnCl₂ catalyst
Alternative: methane chlorination
Compression and liquefaction for storage

Reaction Diagram

CH3OH + HCl -> CH3Cl + H2O

Unit Operations

Process steps following chemical engineering unit operation principles

#	Operation	Description
1	Methanol/HCl Feed	Vaporize methanol and HCl
2	Hydrochlorination	γ-Al₂O₃ catalyst at 300-380°C
3	Condensation	Condense water and heavy ends
4	Caustic Wash	Remove residual HCl and DME
5	Drying	Dry with H₂SO₄ or molecular sieve
6	Compression	Compress and liquefy for storage

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 Methyl Chloride -->
<!-- Educational schema - simplified for demonstration -->
<BatchML xmlns="http://www.wbf.org/xml/B2MML-V0600">
  
  <ProcessCell ID="METHYL_CHLORIDE_PLANT_CELL">
    <Description>Process cell for Methyl Chloride production</Description>
    
    <Unit ID="METHYL_CHLORIDE_PLANT">
      <Description>Main synthesis unit</Description>
      
      <!-- Equipment Modules -->
      <EquipmentModule ID="VAPORIZER">
        <Description>Vaporizer</Description>
      </EquipmentModule>
      <EquipmentModule ID="REACTOR">
        <Description>Reactor</Description>
      </EquipmentModule>
      <EquipmentModule ID="CONDENSER">
        <Description>Condenser</Description>
      </EquipmentModule>
      <EquipmentModule ID="SCRUBBER">
        <Description>Scrubber</Description>
      </EquipmentModule>
      <EquipmentModule ID="DRYER">
        <Description>Dryer</Description>
      </EquipmentModule>
      <EquipmentModule ID="COMPRESSOR">
        <Description>Compressor</Description>
      </EquipmentModule>
    </Unit>
  </ProcessCell>
  
  <MasterRecipe ID="METHYL_CHLORIDE_PLANT_RECIPE">
    <Description>Master recipe for Methyl Chloride</Description>
    <ProductID>METHYL_CHLORIDE</ProductID>
    
    <UnitProcedure ID="METHYL_CHLORIDE_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="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_04">
        <Description>Operation 4</Description>
        <Phase ID="WASH">
          <Description>Wash 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="DRY">
          <Description>Dry 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="COMPRESS">
          <Description>Compress 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

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