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Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure

Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure

    • Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure
    • Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure
  • Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure

    Product Details:

    Place of Origin: China
    Brand Name: QIYAO
    Certification: ISO, ASME

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 unit
    Price: Customized Product, Quoted Case By Case
    Packaging Details: Seaworthy wooden case
    Delivery Time: 4~8 months after PO
    Payment Terms: T/T, L/C
    Supply Ability: 100 units per month
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    Detailed Product Description
    Material: Enameled Plate Structure: Fully Welded & Enameled Plate Sheets To Be Welded As The Core Component Of Air Preheater
    Customised: Available Application: Oil & Gas, Refineries, Petrochemical Industries, Etc.
    Packing: Seaworthy Wooden Case After-sale Service: Available
    High Light:

    air preheater design


    combustion air preheater

    Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure



    Enamel Plate Preheater is a kind of gas-gas heat exchanger and is mainly featured by that plate exposed to heat transfer medium are all enameled, so that it can be applied in cases with potential hazard of low temperature corrosion where the plate preheaters constructed with stainless steel or other material are not applicable. As a new type of air preheater integrated with high efficiency heat transfer performance of plate air preheater and ultra corrosion resistance performance of enameled surface, it is ideal for high efficient waste heat recovery of low temperature flue gas. It has a wide prospect in the fields of energy-saving upgrade of boilers, heaters and the improvement of thermal efficiency of furnaces. It will make a great contribution to the petrochemical industry on energy-saving & environmental protection.


    Enameled Plate Air Preheater can be widely applied in refining, chemical, power and metallurgy industries, etc. It excels other similar plate air preheater in the comprehensive economic performance and service life and is ideal for the application and/or revamp of large scale air preheaters, especially applicable for the waste heat recovery system for low temperature(﹤200℃) corrosive flue gas.


    Work Principle / Flow

    For the petrochemical industry: Arranged in the waste heat recovery system of heater, the Enamel plate air preheater receives the hot flue gas generated from the heater to pre-heat the air before it is delivered to the stainless steel plate preheater and at the same time, it cools the flue gas down to below 100℃ before it is discharged from the chimney.



    Model No.  
    Design sustained temperature of equipment 
    Working pressureKpa 
    Design pressureKpa 
    Test pressureKpa 
    Flow rate of mediaNm3/h 
    Flow rate of flue gasNm3/h 
    Design inlet temperature of media 
    Design outlet temperature of media 
    Inlet temperature of flue gas 
    Outlet temperature of flue gas 
    Flue gas side resistance lossPa 
    Media side resistance lossPa 
    Design capacity of heat exchangeKw 
    Material of plate sheet Enamel plate sheet / 1mm
    Material of shell Q235B

    1. Excellent corrosion resistance and extended service life

    The enameled channel outside the plate tube (flue gas side) of the air preheater is produced with special enamel process assuring no pinholes on the enameled surface and provides excellent corrosion resistance.
    2. High efficient heat exchange and compact size

    The plate sheet is stamped with multiple dimples optimized by numerical simulation and can establish turbulence even at low Reynolds number. Therefore, the heat transfer performance is greatly improved and the size of equipment is reduced.
    3. Lower flow resistance

    The specific plate type of flow channel matches up the pressure drop at gas side and air side perfectly other than increasing heat transfer coefficient. The of enamel plate sheet has a smooth surface enabling little soot to accumulate and provides straight channel, more flow area and shorter flow distance, which means less resistance for the gas and air flow inside and outside the plate tube.
    4. Easy cleaning

    The enamel plate sheet accumulates little soot and resists temperature shock, so that it allows online cleaning with water at ambient temperature.
    5. Tightly sealed with no leakage

    In conventional plate air preheaters, such as ceramic plate type & cast iron plate type, etc., the plate sheets are bolted and sealed with gaskets or sealing strips. During operation, the sealing material is apt to deform owing to the heat and causes gas or air leakage. For the air preheater developed by SMDERI, the plate sheets are welded together and sealed at both ends by sealing material, which will isolate the flue gas and air completely to ensure no leakage.

    6. Modularized structure

    All components of the enamel plate air preheater are pre-assembled as modules in workshop, which ensures good quality and convenient transportation and easy installation on site. To facilitate the selection, maintenance and service of users, the plate tubes or even plate air preheaters can be assembled like block-building as desired based on different thermal load and flue gas (air) flow rate.
    7. Reliable quality assurance

    The plate sheets are welded by automatic production line and argon-arc welding and then are enameled twice. Then the enameled plate sheets undergo temperature shock resistance test, high pressure test and corrosive resistance test to assure outstanding performance of enameled plates and a service life of over 8 years.
    Typical project
    Waste heat recovery system revamp project for feeding heater of jet fuel hydrogenation plant at Sinopec Maoming Corp.

     Model No. QYDYD-16-143-1560H  
    1Design temperature350
    2Design pressureKpa5
    3Test pressureKpa10
    4Air flow rateNm3/h13588
    5Flue gas flow rateNm3/h14150
    6Air inlet temperature20
    7Air outlet temperature260
    8Flue gas inlet temperature310
    9Flue gas outlet temperature100
    10Design capacity of heat exchangeKw1239
    11Plate sheet thicknessmm1.0
    12Plate sheet material Enameled steel plate
    13Shell material Q235B

    Petrochemical Industry Enamel Plate Air Preheater Fully Welded Structure

    Contact Details
    Shanghai Marine Diesel Engine Research Institute

    Contact Person: Mrs. Tan Ling

    Tel: 86-21-51151156

    Fax: 86-21-51711742

    Send your inquiry directly to us (0 / 3000)

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