ADG
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Catalog excerpts

ADCA ATMOSPHERIC SEMI – DEAERATORS ADG DESCRIPTION The ADCATherm atmospheric semi-deaerators are designed to heat boiler feed water and to reduce oxygen and carbon dioxide (oxygen values in the feed water of less than 1,6 mg/L can be achieved). Remaining oxygen can be completely removed using oxygen scavenging chemicals. Basically, the complete system consists of a storage vessel, a deaeration head section and a vent. OPERATION Hot return condensate is injected in the bottom of the storage vessel using an adequate sparger pipe and softened make-up water is introduced in the deaerator head to be heated by a contact cascade flash steam heating system (counter-current flow) coming from the vessel. A part of the dissolved gases is liberated from the water at this point, and then to the atmosphere, trough the flash steam vent line. The semi-deaerated water then falls to the storage vessel below, where a steam injection system will provide an additional deaeration. The complete unit is supplied, including all the necessary instrumentation for temperature and level control, to be described in our offer, depending on the operation conditions (see Table 1). MAIN FEATURES Prevents energy wasting. Easy to install. Can be installed on new or existing systems. Reduces the flow of flash steam from the vessel venting pipe. Long life expectancy. OPTIONS: Complete stainless steel construction. Complete system including all the necessary equipments. Vent condenser for energy recovery. Steam boiler feed water. AVAILABLE MODELS: Flanged EN 1092-1 or ASME. ISO or NPT threaded sockets. Different connections on request. CONSTRUCTION: Carbon steel with internal stainless steel components. INSTALLATION: Deaerator head – vertical installation. Storage vessel – cylindrical horizontal design. Final dimensions and connections according to the drawing supplied after order confirmation. VALSTEAM ADCA LIMITING CONDITIONS PS – Maximum allowable pressure TS – Maximum allowable temperature 120 ºC Minimum operating temperature: -10 ºC; Design code: AD-Merkblatt. Remark: other conditions and CE marking on request. We reserve the right to change the design and material of this product without notice.

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ADG400 780 510 ** 220 490 180 150 80 40 100 1/2” 125 125 *** d1 – hot condensate inlet; d2 – cold make-up water; d3 – recirculating pump connection; d4 – vent; d5 – pressure gauge connection; d6 – cold condensate return; d7 – flash steam; * Optional; ** Dimensions on request; *** Weight to be confirmed. SELECTION TABLE THERMAL DEAERATOR DATA INQUIRY Make-up water pressure Make-up water temperature Make-up water flow rate Condensate return pressure Condensate temperature Condensate flow rate Saturated heating steam pressure Feed water tank required capacity Max. dearated water flow required...

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ADCA TYPICAL INSTALLATION Semi - deaerator system with cold make-up water Atmospheric deaerator provides an economic system to preheat boiler feed water and remove dissolved gases. The steam injector can be supplied with flanges and pipe, ready to adapt to existing vessels. The feed water is re-circulated using a low power re-circulating pump which will improve thermal efficiency by reducing the temperature stratification. For more detailed information please see assembly drawing ADADGV.01.2844. VALSTEAM ADCA We reserve the right to change the design and material of this product without...

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ADCA TYPICAL INSTALLATION Semi - deaerator system with vent condenser (Heat exchanger by-pass) (Condensate return) Atmospheric deaerator including ADCATherm STS series complete stainless steel heat exchanger. Make-up water crossing the heat exchanger will condense the flash steam, preventing energy waste and providing better performance for the whole system. The steam injector can be supplied with flanges and pipe, ready to adapt to existing vessels. The feed water is re-circulated using a low power re-circulating pump which will improve thermal efficiency by reducing the temperature...

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ADG 4Pages

Catalog excerpts

All VALSTEAM ADCA Engineering S.A. catalogs and technical brochures

ADG
4Pages