Diethyl Ether

Molecular Structure

Molecular Details

Molecular Formula	C₂H₅OC₂H₅
Molecular Weight	74.12 g/mol
State	Liquid at standard conditions

Olefinverbund Integration

Chemistry & Engineering

Reaction Equation	2 C₂H₅OH → (C₂H₅)₂O + H₂O
Thermodynamics	Endothermic dehydration
Catalyst System	Sulfuric acid or Alumina
Reactor Class	Dehydration reactor
Process Considerations	Historical anesthetic; byproduct of ethanol hydration.

Extraterrestrial Production Pattern

1. Ethanol dehydration over H₂SO₄ or solid acid at 140°C
2. Vapor-phase process over Al₂O₃ catalyst
3. Distillation and drying
4. Peroxide inhibitor addition for storage

Applications

• Laboratory solvent
• Extraction medium
• Starting fluid for engines
• Historical anesthetic

Reaction Diagram

Overall Reaction: 2 C2H5OH -> (C2H5)2O + H2O

Unit Operations

Process steps following chemical engineering unit operation principles:

Step	Operation	Description
1	Ethanol Feed	Pump ethanol to dehydration reactor
2	Dehydration	Al₂O₃ or H₂SO₄ catalyst at 130-140°C
3	Neutralization	Neutralize residual acid if used
4	Water Separation	Phase separate or distill water
5	Ether Distillation	Distill to >99.5% ether
6	Peroxide Removal	Remove peroxides before storage

S88 Batch Control Model

This module follows the ISA-88 (S88) batch control standard. Below is a simplified BatchML schema for educational purposes:

<?xml version="1.0" encoding="UTF-8"?>
<!-- ISA-88 Batch Control Model for Diethyl Ether -->
<!-- Educational schema - simplified for demonstration -->
<BatchML xmlns="http://www.wbf.org/xml/B2MML-V0600">
  
  <ProcessCell ID="DIETHYL_ETHER_PLANT_CELL">
    <Description>Process cell for Diethyl Ether production</Description>
    
    <Unit ID="DIETHYL_ETHER_PLANT">
      <Description>Main synthesis unit</Description>
      
      <!-- Equipment Modules -->
      <EquipmentModule ID="PUMP">
        <Description>Pump</Description>
      </EquipmentModule>
      <EquipmentModule ID="REACTOR">
        <Description>Reactor</Description>
      </EquipmentModule>
      <EquipmentModule ID="NEUTRALIZER">
        <Description>Neutralizer</Description>
      </EquipmentModule>
      <EquipmentModule ID="DECANTER">
        <Description>Decanter</Description>
      </EquipmentModule>
      <EquipmentModule ID="COLUMN">
        <Description>Column</Description>
      </EquipmentModule>
      <EquipmentModule ID="TREATMENT_SYSTEM">
        <Description>Treatment System</Description>
      </EquipmentModule>
    </Unit>
  </ProcessCell>
  
  <MasterRecipe ID="DIETHYL_ETHER_PLANT_RECIPE">
    <Description>Master recipe for Diethyl Ether</Description>
    <ProductID>DIETHYL_ETHER</ProductID>
    
    <UnitProcedure ID="DIETHYL_ETHER_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="DEHYDRATE">
          <Description>Dehydrate 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="NEUTRALIZE">
          <Description>Neutralize 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="SEPARATE">
          <Description>Separate 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="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>
      
      <Operation ID="OP_06">
        <Description>Operation 6</Description>
        <Phase ID="TREAT">
          <Description>Treat 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>

**Key S88 Concepts:**
- **Process Cell**: The physical grouping containing all equipment for this process
- **Unit**: The major equipment that performs the synthesis
- **Equipment Modules**: Individual pieces of equipment (reactors, columns, etc.)
- **Unit Procedure**: The sequence of operations to produce the product
- **Phases**: The lowest level of procedural control (e.g., REACT, SEPARATE, PURIFY)

Key S88 Concepts:
• Process Cell: Physical grouping containing all equipment
• Unit: Major equipment performing synthesis
• Equipment Modules: Individual pieces (reactors, columns, etc.)
• Phases: Lowest level of procedural control (REACT, SEPARATE, etc.)

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This Synthesis Module is part of the 100chemicals Olefinverbund — an integrated chemical production network designed for extraterrestrial civilization on Moon and Mars.