The product stream is distilled to produce a first overhead stream comprising water and isobutylene and a first bottoms stream comprising diisobutylene and tertiary butyl alcohol. Water is separated from the first overhead stream, and the resulting isobutylene-enriched stream is recycled back to the reaction step.The first bottoms stream is distilled to produce a second overhead stream comprising tertiary butyl alcohol and a bottoms product stream comprising diisobutylene.his example shows that the use of a single distillation tower with a side draw is ineffective for removing water from the TBA recycle stream (line 4), or from the isobutylene recycle stream (line 5).
Over time, sludge builds up inside the radiator and the coolant becomes less effective, which will hurt your engine performance and gas mileage. Flushing your radiator regularly, usually once every two to five years, will keep you car running smoothly.
Always match the correct pressure cap to the correct thermostat. Itâs recommended to change coolant every 30,000 miles or 50,000 km, and it is also recommended that the thermostat and the radiator cap should be changed as well. Use Fail SafeÂ® thermostats and protect your engine from sudden overheating conditions.