Steam pipelines insulation replacement in SINOPEC Beijing Yanshan Company

Number of visits: Date:2017-11-14

Customer Profile

CompanySINOPEC Beijing Yanshan Company

Project LocationSINOPEC Beijing Yanshan Company

Equipment/pipeline Aboveground, mid-pressure indoor steam pipelines

Operation Conditions

Operation temperature540

Pipeline diameter:φ426×18mm

Pipeline pressure3.6MPa

No wind indoor

Challenges

1, Surface after insulation and thickness required for insulation must be reduced in order to improve indoor environment.

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

Products

Aerogel blanket DRT061010mm thickness

Solution

7 layers of aerogel blanket DRT0610 with aluminum foil

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

 

Aluminum Silicate Wool

Aerogel Blanket

Pipeline diameter

mm

426

426

Interior liquid temperature

540

540

Ambient temperature

31.4

31.4

Wind speed

m/s

0

0

Thermal conductivity of insulation material

W/(m*℃

0.049

0.020

Thickness for insulation

mm

300

70

Surface temperature of insulation

62.2

49.3

Heat loss after insulation

W/m

451.55

247.1

Energy conservation rate

 

45.3%

Plus or minus

 

Uneven insulation structure has already collapsed

Even insulation structure, no heat leakage from gaps

 

Benefits

After replacement of aerogel, heat loss of the mid-pressure indoor steam pipelines in SINOPEC Beijing Yanshan Company was decreased by 45.3%, overall structure of the pipelines is stronger than before. A drop of 13 of surface temperature of insulation enhances personal safety and improves working environment.

 Pictures from Project Site:

TypeInfo: Case Studies

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