Steam pipeline insulation reform
----Application of aerogel blanket greatly reduces the heat loss of steam pipelines and prolongs the service life of insulation
Customer Profile:
Company Name: Chongqing Changyuan Chemical Co., Ltd.
Use location: Changyuan Chemical Co., Ltd.
Construction equipment / pipeline: above-ground steam pipeline
Use of the silica aerogel :
Huatao HT650 aerogel insulation blanket (10mm thickness)
Working condition of aerogel insulation felt:
Pipe diameter: 273mm
Internal fluid temperature: 200 ° C
Wind speed: 1m/s
Pipe length: 350m
difficulty when to install of the aerogel felt:
1. The pipe bracket must be blocked by thermal bridge to further reduce heat loss.
2, the waterproof performance must be optimized.
3, because the pipeline overhead is 2-5 meters high from the ground, the maintenance is very difficult in the later stage, and the maintenance cycle must be minimized.
4, the original insulation layer is reduced from 100mm to 60mm and completely attached to the surface of the pipeline, it is difficult to remove.
Specific construction plan when to install the silica aerogel:
2-layer Huatao HT650 aerogel Blanket composite single-sided aluminum foil, wrapped with fiberglass cloth.
Use scenario data comparison:
|
Name |
Unit |
Before |
After |
|
Insulation Method |
|
Composite silicate cotton board |
Aerogels |
|
Pipe Diameter |
mm |
273 |
273 |
|
Inside Temperature |
℃ |
200 |
200 |
|
Working Temperature |
℃ |
25 |
25 |
|
Wind Speed |
m/s |
1 |
1 |
|
Thermal Conductivity |
W/(m*℃) |
0.049 |
0.020 |
|
Thickness |
mm |
60 |
20 |
|
Cooling area |
m2 |
1.234 |
0.983 |
|
Insulation surface temperature |
℃ |
44.5 |
35.9 |
|
Heat loss after heat preservation |
W/m |
447.8 |
199.3 |
|
Energy saving rate |
|
55.4% |
|
|
Other |
|
The overall insulation structure has collapsed and is uneven |
Insulation structure uniform without hot seam |
in conclusion:
Compared with the steam transfer pipeline of Chongqing Changyuan Chemical Co., Ltd., the heat loss of the pipeline decreased by 55.4% before and after the transformation. The above calculated heat loss calculation can recover the cost within 15 months. Moreover, the aerogel material has a long service life, which saves a lot of maintenance and replacement costs, and also provides a guarantee for stable and safe production of the factory. In addition, the aerogel has a relatively thin package thickness, and the pipeline in a limited space is also easy to design, and the appearance is beautiful, which makes the whole factory look better and the image is improved.
Engineering picture:
