Steam pipeline insulation replacement in CNPC Liaohe Oil Field

Number of visits: Date:2017-11-14

Customer Profile

Company CNPC Liaohe Oil Field Panjin Branch Company

Project locationLiaohe Oil Field Shuguang Oil Production Plant

Equipment/pipelineAbove-ground steam pipeline.

Operation Conditions

Pipeline diameter114mm

Interior liquid temperature328

Wind speed1m/s

Pipeline length10km

Challenges

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

2, Water-proof performance must be improved.

3, Regular maintenance is difficult because most of the pipelines go through reed marshes.

Products

Aerogel Blanket DRT061010mm thickness

Solution

3 layers of DRT0610 aerogel blanket compounded with single-face aluminum, and then, were wrapped tightly by glass fiber cloth. 

Comparison

Insulation Solution

 

Silicate compound

Aerogel blanket

Pipeline diameter

mm

114

114

Interior liquid temperature

328

328

Ambient temperature

32

32

Wind speed

m/s

1

1

Thermal conductivity of insulation material

W/(m*℃

0.049

0.020

Thickness for insulation

mm

100

30

Heat dissipation area

m2

0.986

0.546

Surface temperature of insulation

46

42.8

Heat loss after insulation

W/m

256.8

109.7

Energy conservation rate

 

57.2%

Plus and minus

 

Cracks, collapse and heat leakage from gaps happen, uneven insulation structure

Even insulation structure, no heat leakage from gaps

 

Benefits

After replacement of aerogel blanket, heat loss is decreased by 57.2%, overall structure of the pipelines is stronger than before

Pictures from Project Site

 
 

TypeInfo: Case Studies

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