Steam pipeline insulation replacement in SINOPEC Henan Oil Field

Number of visits: Date:2017-11-14

Customer Profile

CompanySINOPEC Nanyang Oil Field Branch Company

Project LocationNanyang Oil Field Viscous Oil Production Plant

Equipment/pipelineAbove-ground steam pipeline

Operation Conditions

Pipeline diameter114mm

Interior liquid temperature300

Wind speed0m/s

Pipeline length2000m

Challenges

1Considerations of economy and of energy conservation are two important factors, therefore, a solution of aerogel blanket mixed with other insulation materials is recommended.

2, Thermal bridges associated with pipe racks must be stopped in order to further minimized heat loss.

3, Water-proof performance must be improved.

Products

Aerogel Blanket DRT06066mm thickness

Solution

A mixed solution of aerogel blanket and other insulation material, from interior to exterior:2 layers of 6mm thickness aerogel blanket + 50mm titanium ceramic insulation + aluminum cladding

Noted: Glass fiber fabric with single-face aluminum foil was applied in between every 2 layers of aerogel blanket to prevent heat leakage from the gaps.

Data Comparison

Insulation Solution

 

Rock wool

Mixed solution of aerogel blanket and other insulation materials

Pipeline diameter

mm

114

114

Interior liquid temperature

300

300

Ambient temperature

20

20

Wind speed

m/s

0

0

Thickness for insulation

mm

120

65

Heat emission area

m2

1.112

0.766

Surface temperature of insulation

29

28

Heat loss after insulation

W/m

290.31

137.88

Plus and minus

 

Uneven insulation structure

Even insulation structure, no heat leakage from gaps

 

Benefits

According to the requirement, the allowed maximum of heat loss for seasonal operation is 308W/m2, the allowed maximum of heat loss for annual operation is 186W/m2. Such requirement cannot be satisfied by rock wool, what’s more, the rock wool as they used would collapse 2 years after installation because of the loose structure of rock wool, frequent replacement of rock wool is inevitable. With the mixed solution of aerogel, requirement for heat loss is satisfied and frequency of insulation replacement is sharply reduced.

Pictures from Project Site

 
 
 

TypeInfo: Case Studies

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