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

Products：: Aerogel blanket DRT0610（10mm thickness）

Operation Conditions：: Pipeline diameter：377mm; Interior liquid temperature：427℃; Wind speed：2m/s; Pipeline length：400m

Challenges：: Water-proof performance must be improved.; Maintenance is difficult for aerial pipelines.; Removal of old insulation materials is difficult because they have fully attached to the pipelines surface.

Solution：: 5 layers of aerogel blanket DRT0610

Data Comparison：

Insulation Solution	Unit	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*k）	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
Energy conservation rate			14.9%
Plus and minus		Uneven insulation structure	Even insulation structure, no heat leakage from gaps

Benefits：

After replacement of aerogel, heat loss of the pipelines in CNOOC 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.

Engineering Picture：

Back to list