Steam pipelines insulation replacement in CNOOC Zhoushan Petrochemical Co,.Ltd.

Number of visits: Date:2017-11-14

Customer Profile

CompanyCNOOC Zhoushan Petrochemical Co,.Ltd.

Project Location CNOOC Zhoushan Petrochemical Co,.Ltd.

Equipment/pipelineAboveground steam pipelines

Operation Conditions

Pipeline diameter377mm

Interior liquid temperature427

Wind speed2m/s

Pipeline length400m

Challenges

1, Water-proof performance must be improved.

2, Maintenance is difficult for aerial pipelines.

3, Removal of old insulation materials is difficult because they have fully attached to the pipelines surface.

Products

Aerogel blanket DRT061010mm thickness

Solution

5 layers of aerogel blanket DRT0610

Data Comparison

Insulation Solution

 

Aluminum Silicate Blanket

Aerogel Blanket

Pipeline diameter

mm

377

377

Interior liquid temperature

427

427

Ambient temperature

25

25

Wind speed

m/s

2

2

Thermal conductivity of insulation material

W/(m*℃

0.050

0.020

Thickness for insulation

mm

200

50

Surface temperature of insulation

35.8

38.8

Heat loss after insulation

W/m

347.6

301.5

Lifespan of insulation

Year

3

20

Energy conservation rate

 

14.9%

Plus or minus

 

Uneven insulation structure

Even insulation structure, no heat leakage from gaps

 

Benefits

After replacement of aerogel, heat loss of the pipelines in CNOOC Zhoushan Petroleum Chemical Co.,Ltd . was decreased by 14.9%.

The long service life of aerogel materials helps to save costs for maintenance and replacement, enabling stable and safe operation.

Thin insulation profile allows design in confined space.

Pictures from Project Site

 
 
 

TypeInfo: Case Studies

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