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Industrial Cast Iron Flue Gas Heat Recovery Equipment Boiler Economizer ASME Standard

Categories Boiler Economizer
Brand Name: HD BOILER
Model Number: Economizer
Certification: ISO9001 , SGS , TUV , ASME , EN
Place of Origin: China
MOQ: 1 Set / Sets 10tons
Price: Negotiable
Payment Terms: Western Union, L/C, T/T
Supply Ability: 500 Tons per month
Delivery Time: 30 days
Packaging Details: Seaworthy Packing
Material: Carbon steel
Type: Boiler Part
Structure: Fire/Water Tube
Fuel: Coal/Gas/Oil-fired, Water Heat
Heat Exchanger: Fin Tube
Application: Heater, Vaporizer
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    Industrial Cast Iron Flue Gas Heat Recovery Equipment Boiler Economizer ASME Standard

    Industrial Cast Iron Flue Gas Heat Recovery Equipment Boiler Economizer ASME Standard


    Product Description

    1. HDB Grade A manufacture industrial boiler spiral finned tube economizer is a heat exchanger device that captures the "lost or waste heat" from the boiler's hot stack gas.Cheap price and good quality spiral finned tubes economizer typically transfers this waste heat to the boiler's feed-water or return water circuit, but it can also be used to heat domestic water or other process fluids.
    2. Capturing this normally lost heat reduces the overall fuel requirements for the boiler. Less fuel equates to money saved as well as fewer emissions - since the boiler now operates at a higher efficiency. This is possible because the boiler feed-water or return water is pre-heated by the economizer therefore the boilers main heating circuit does not need to provide as much heat to produce a given output quantity of steam or hot water.
    3. Again fuel savings are the result. Best price boiler economizers with spiral finned tubes improve a boiler's efficiency by extracting heat from the flue gases discharged.


    Material composition
    It is made of spiral finned tubes, inlet header, outlet header, elbow and other supporting material.
    Structural arrangement
    Spiral finned tubes are in-line arrangement or staggered layout, water in the pipe.


    Specifications

    DescriptionBoiler economizer
    MaterialAlloy steel, Carbon steel, SA210C ,SA213T22, etc.
    Material standardASTM, EN or ISO etc.
    DimensionCustomization
    Weight

    Min: 10 ton

    Max.:1000 ton

    Smelting Process:EF+LF + VD
    ProcessMaterial→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection
    UT standardASTM A388 or EN10228, etc

    Technical specifications

    Material Structure
    Consists of a serious of spiral fin tubes, the headers of inlet and outlet, bend, frame and other auxiliaries.

    Structure Arrangement
    In line / staggered arrangement.


    Function


    (1) The economizer is a steam generation system as like a boiler. when the exhaust gas discharge from the engine cylinder through the exhaust valve it goes to the boiler for generate steam by heating of water.


    (2) After those gas it goes through the economizer the remaining exhaust gas temperature is heated the water in economiser. it help to generate steam, and it is improving the efficiency and save the fuel consumption


    (3) An economizer uses the waste heat from the boiler exhaust, that would otherwise be lost to atmosphere to (in most cases) preheat the feed water into the boiler.This improves the boiler efficiency and reduces fuel costs.


    Variety


    Utility Boiler Economizer

    1HDB produces economizers for utility boilers, which includes boilers fueled by coal, wood, oil, or other solid fuels to produce electricty from the boiler's high pressure steam.
    2These economizers are usually located in the back pass of the boiler and oriented with the tubes running horizontally.The boiler feedwater runs through the economizer circuits in the opposite direction of the gas flow (called counterflow).
    3Bare tubes are typically utilized in order to minimize ash fouling, but some boiler OEM's design their economizers with finned tubes, either spiral or long finned.
    4HDB can produce economizer elements with either bare, spiral finned, or long finned tubes, and if you prefer, re-design your unit to one of the other tube-types. HDB can also fabricate replacement headers for all utility boiler economizers.

    Package Boiler Economizer

    1HDB has unique manufacturing capabilities that the Optimus engineers take full advantage of when designing sulfuric acid plant economizers and superheaters.
    2Often this allows the Optimus units to be configured for higher heat transfer efficiencies which results in a reduced surface area requirement and, consequently, a lower-priced product.
    3HDB utilizes its on-site capabilities to fin and bend the tubes, machine and fabricate the headers, drill the tubesheets, cut and prep all casing materials, and perform all of the pressure part and casing welds.
    4This gives HDB more control of the manufacturing sequence and schedule which has helped us achieve a remarkable record of on-time delivery performance.

    HRSG Economizer

    1Economizers for today's HRSG modules are configured with fintubes that hang vertically. HDB has fabricated economizer coils for virtually all of the HRSG OEM companies and understands the unique features of each.
    2In many cases, utilities desire to upgrade their economizers from plain carbon steel to an alloy material to help resist flow accelerated corrosion (FAC) inside the headers and tube bends.
    3HDB is a one-stop shop for economizer fabrication because we prep all the materials and perform all of the pressure part and attachment welding, from finning the fintubes, fabricating the headers, and assembling the coil bundle.

    Manufacturing and acceptance criteria


    ·JB/T6512 "boiler with a high-frequency resistance welding spiral fin tube manufacturing technology conditions"
    ·HG/T3181 "high-frequency resistance welding spiral fin tube"
    ·JB/T6511 "spiral finned tube test technical conditions."
    ·JB1611 "boiler tube mane box assembly conditions"
    ·JB/T1612 "boiler pressurufacturing conditions."
    ·JB16I3 "boiler pressure parts welding conditions."


    *Note:HD BOILER can bespoke special type of economizer according to customer's requirement.


    Test


    1Latest type of 'U' bending machine is used for precision cold bending of tubes.
    2Bending is done for all kind of heat exchanger, condenser, economizer, boiler tubes in Stainless Steel Seamless as well as welded.
    3Subsequent to 'U' bending tubes are hydro tested & stress relieved if asked for.
    4Also mock-up pieces are prepared for determining thickness reduction on the bend portion.
    5Dye penetrant testing on the bend portion is done ro detect cracks, flaws or any type of defect.
    6Special packing is provided to prevent any damages during transit.


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