Circulating fluid bed heat exchanger?
Hi Tech Energy’s ‘Multi-pipes circulating fluid bed heat exchanger’ installs vertical heat pipe, perforated sheet, and particle separating device inside heat exchanger. It is circulating structure of fluid bed of solid particle through heat pipe. It solves heat transfer fouling and corrosion of heat transfer side.
Necessity of circulating fluid bed heat exchanger
Fouling of waste heat boiler in incinerator
- Reduce heat transfer performance (about 30%)
- Need cleaning per 1~3 weeks (increase maintenance cost)
Stop incinerator to clean waste heat boiler
- Effect on related process due to incinerated heat supply stop
- Reduction of waste treatment (reduction of productivity)
Exhaust gas exit temperature increase due to waste heat boiler fouling
- Bag filter and after facility performance
The development and commercialization of fouling reduction circulating fluid bed heat recovery facility is successful for medium and small size incinerator, boiler, smelting furnace and drought furnace which is currently operated at RDF, food waste powder and sewage sludge incinerators. Circulating fluid bed heat exchanger is proved excellent in energy cost saving and environmental improvement.
Test of fouling removal effect of incinerator exhaust gas
Test data of sewage sludge incinerating exhaust gas fouling
Analysis data before food powder incinerating exhaust gas fouling
- Analysis data of incinerating property before incineration
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- Photos of heat pipe after incineration
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| Element content |
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C |
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H |
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N |
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O |
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S |
| Contents(wt%) |
45.9 |
6.49 |
2.97 |
33.19 |
0.25 |
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< Before cleaning fouling > |
< After cleaning fouling > |
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< Result of food waste power analysis > |
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Analysis data before RDF fouling test
Features of circulating fluid bed heat exchanger
- Rapid cooling of exhaust gas
- Promoting heat transfer by liquidating solid particle
- Fouling reduction and automatic cleaning
- Removal of adhesive dust
- Reduction of corrosive gas
- Low pollution of perforated plate
- Compact type using multiple increase pipes
- Less pressure loss of gas side
Competitiveness of circulating fluid bed heat exchanger
Excellent heat transfer efficiency
- Increase heat transfer efficiency due to liquidation of solid particle
- Increase heat transfer performance by reducing fouling by automatic cleaning function
Economic effect
- Circulating fluid bed heat exchanger does not need to stop plant for cleaning heat exchanger which improves productivity and reduces maintenance cost
Productivity of process
- Fouling is controlled at the fluid bed in circulating fluid bed heat exchanger inlet, which reduces dust adhesion at post processing facility and flow, and increases productivity by helping performance and maintenance
Post processing life increase and maintenance problem reduction
- The corrosion of post processing facility (bag filter, electric dust collector) by corrosive exhaust gas causes life reduction and maintenance problem. Circulating fluid bed heat exchanger neutralizes corrosive exhaust gas to restrain corrosion. As a result, the facility life is extended and maintenance problem is reduced
Energy saving and environmental improvement
- Reduction of white lead of exhaust gas
- Reduction of vapor of exhaust gas by 45%
- Reduction of exhaust gas
- Reduction of greenhouse gas
- Reduction of dust, Sox and NOx to improve environmental condition
- Effect on environmental improvement of facilities due to dust removal of exhaust gas
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