High Corrosion Fuel Gas Economizer For Boiler Heat Reovery Systems , ASME Standard
Product Details
| Function: | Steam Boiler | Structure: | Tube Heat Exchanger |
|---|---|---|---|
| Material: | Stainless Steel,aluminum | Connector: | Flange Or Thread Or Others |
| Usage: | Power Plant/CFB Boiler | Port: | Shanghai |
| Specification: | Customized | Condition: | New |
| Highlight |
power plant economizer,economizer for boiler |
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Product Description
High Corrosion Fuel Gas Boiler Economizer For Heat Reovery Systems, ASME Standard
Parameter
| Name(unit) | Specification(mm) |
| Bare pipe(OD) | 25-165 |
| Bare pipe(Thickness) | 2-8 |
| Fin (Thickness) | 0.6-3.0 |
| Fin (Height) | 5-30 |
| Fin tube thread pitch | 5-30 |
| Fin tube length | ≤12000 |
Working principle of a flue-gases cooler is the same as in the above-described equipment, but the aim in this case is to cool a primary fluid, not to get a thermal profit by heating a secondary fluid.
These equipment are usually installed as the previous step to a flue-gases cleaning, to avoid the gases from reaching the cleaning systems at too high temperatures. This means an alternative to the dilution with air, which would imply an over-sizing of the mentioned systems
Details
Before designing this kind of equipment, it is necessary to know the nature of the gases to be cooled and their dust content. The purpose of all that is to design an equipment free of important fouling which would force to make cleaning works more frequently than wanted.
We must have in mind as well the availability to detach the dust from the gaseous stream containing it in all those areas where there is a bend or some enlarging in the pass section, which forces to include in the design some systems for dust collection and removal, to allow the correct heat exchange.
Functions
1. Absorb the heat of low-temperature flue gas, reduce the smoke discharge temperature, reduce smoke loss, and save fuel.
2. Since the feed water is heated in the economizer before entering the steam drum, the heat absorption of the feed water on the heating surface is reduced, and the economizer can be used to replace part of the evaporation heating surface with higher cost.
3. feed water temperature increased, into the drum will reduce the wall temperature difference, thermal stress corresponding to reduce, extend the service life of the drum.
Design principle
When the designer's choice is the multi-cyclone collector,or the electrostatic precipitator,or a different type constructed of metals or ther low temperature materials,it becomes necessary to add a gas-cooling device.This is done to assure that he entering flue gases are with in the temperature range of 600 to 700F,with no possibility of even flashes of higher temperatures.
The exit temperature depends upon the materials used downstream from the cooling chamber.Since , however , experience and economical evaluations justifying the use of the high temperature alloys are not generally available this paper is based upon the exit temperatures stated above.
The two agents commonly used as cooling materials are air and water.Both have advantages and disadvantages.Generally,a combination of the two is found most acceptable.However,they must first be considered separately,so that the characteristics of each may be properly evaluated.
Workshop
Company Information
HD Boiler offers a best in class facility,including:
- Fabrication area of 200,000 square meters
- 150 Engineers
- 600 Coded welders
- 60 Licensed Inspectors (including NDT level-lll instructors)
- Grade-ALicenses for Design and Manufacture boiler (issued by the State Administration of Quality Supervision and Inspection)
- ISO 90001:2008 Quality System
- ASME Certificate of Utility Boiler
- ASME‘S’ , ‘U’ and NB stamp authorization
Product Highlights
High Corrosion Fuel Gas Boiler Economizer For Heat Reovery Systems, ASME Standard Parameter Name(unit)Specification(mm)Bare pipe(OD)25-165Bare pipe(Thickness)2-8Fin (Thickness)0.6-3.0Fin (Height)5-30Fin tube thread pitch5-30Fin tube length≤12000 Product DescriptionWorking principle of a flue-gases ...
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