Flash distilasi (kadang-kadang disebut "keseimbangan distilasi") adalah teknik pemisahan satu tahap. Sebuah umpan campuran cairan dipompa melalui pemanas untuk menaikkan suhu dan entalpi campuran. ...Full description
Chemical Engineering. Design for flash distillationFull description
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HAZARDS AND OPERABILITY STUDIES (HAZOP) Project Name: Production of Methanol Date: 28TH MAY 2014 Page of Process: Flash Drum Section Reference drawing: Process Deviations Item Study Node Possible causes Possible Consequences Parameter (Guide words) 1. Lower feed drum 1. Higher liquid level temperature.
Action required 1. Install and
pressure temperature
controller for the FLASH DRUM
Pressure
drum.
Low 2. Leakage
in
the
flash drum
FLASH DRUM
Pressure
2. Lower CO2 vapor
2. Install
pressure
recovered at the
indicator in the
top of flash drum.
flash drum.
1. Higher feed temperature.
1. Lower liquid level.
1. Install pressure and temperature controller for the drum.
2. Blockage in vapor stream.
2. Risk of drum explosion.
2. Install pressure alarm.
High
Item
Study Node
Process
Deviations
Parameter
(Guide words)
Possible causes 1. Blockage in inlet stream.
FLASH DRUM
Level
2. The inlet stream
Level
1. No
Action required
separation
1. Low level alarm
separation
2. Install temperature
occurs. The pump
controller at the
might damage.
feed stream
occurs
Low too hot.
FLASH DRUM
Possible Consequences
2. No
1. Inlet stream too cold.
1. No separation occurs.
1. Install temperature controller at the feed.
3. Blockage in vapor stream.
2. Risk of drum explosion.
3. Install pressure alarm.
High
Item
Study Node FLASH DRUM FLASH DRUM
Process
Deviations
Parameter
(Guide words)
Possible causes
Possible Consequences Components are not fully
Flow
Low
Flow
High
Valve fully open Valve opening too small
separated.
Flow of the product too slow
Action required Always check the condition of the valve
