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RECOVERY BOILERS: SHOCKWAVE SHEDS SCALES


August 1, 2001
By Pulp & Paper Canada

ATLANTA, GA — Hydro Dynamics introduced its ShockWave Power at the International Chemical Recovery Conference in June. This device heats liquids by shock waves rather than by the conventional combust…

ATLANTA, GA — Hydro Dynamics introduced its ShockWave Power at the International Chemical Recovery Conference in June. This device heats liquids by shock waves rather than by the conventional combustion and heat transfer method. The ShockWave Power generator is designed to provide higher rates of efficiency in four areas: heating, mixing, separating and concentrating. Thus, scaling is eliminated in the heating and concentration of liquids such as black liquor. Black liquor solids content is said to be able to reach 85 to 86% with no scaling. The footprint of the generator is small. The biggest unit is 400 hp, when gas and liquids are mixed to reduce sodium sulphide. It can be placed before the direct contact evaporators to reduce sodium sulphide to below 0.1 g/L. The unit can be connected to a mill’s control loop. Besides black liquor, other pulp and paper applications could include bleaching, white liquor (polysulphide generation), dissolved air flotation or any gas/liquor heating or mixing operation.

The generator works by taking a fluid into the machine housing where it passes over the generator’s spinning cylinder. The specific geometry of the holes in the cylinder, clearance between the cylinder, and the housing and rotational speed create pressure differences within the liquid where tiny bubbles form and collapse. These collapsing bubbles generate shock waves that are used to heat, concentrate, mix and separate. The first pulp and paper-related unit application is due to start up in an environmental application at a US mill.

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Circle Reader Service No. 2

PUMPS: DEMANDING APPLICATIONS

MINNEAPOLIS, MN — Cat Pumps, Inc. has introduced its 75 Frame and 150 Frame “R” series, large capacity, reciprocating pumps, with flows of up to 320 gal/min and pressures up to 10 000 psi. The pumps are ISO 9000 certified and meet API 674 standards. These pumps are available as pump only or as a custom-designed Power Unit. Additional custom order pump units of up to 660 gal/min are also available.

Circle Reader Service No. 3.

VALVES: XTREME PERFORMANCE

WORCHESTER, MA — Jamesbury ball valves with unique flexible lip seals are available with the Xtreme seals for expanded performance in temperature, pressure and cycle life. They are available from 1/4″ to 3″ threaded end, rated to 4500 psi and 1/2″ to 24″ ANSI Class 150 and 300 lb. flanged. With Xtreme, Jamesbury high-performance ball valves are ideal for services including acids, caustics, gases, steam. In addition, valves are available for difficult-to-handle fluids such as chlorine, oxygen, hydrogen peroxide, high vacuum and saturated steam to 475 psi.

Circle Reader Service No. 5.

NIP PROFILER: SOPHISTICATED NIP

EAST HANOVER, NY — Sensor Products has released an improved version of its Auto-Nis system: a portable, Windows-based automatic nip profiler. Auto-Nis is a sophisticated optical scanner and software system that read and interprets Pressurex/Fuji Prescale nip impression films.

Circle Reader Service No. 6.

TRANSMITTER: CONTINUOUS PROCESS CONTROL

IRVINE, CA — The Type 8326 programmable pressure transmitter from Burkert is designed to proved continuous, high-accuracy pressure or tank level measurement over a wide measurement range. It offers high turn-down, multiple configuration with easy, programmable settings.

Circle Reader Service No. 7.

BRAKE ACTUATOR: DISK BRAKE UPGRADE

ROCHESTER, NH — Dover Flexo Electronics has launched a pneumatic dual disk brake upgrade program, which includes changing the actuator mechanism on an existing dual disk brake and replacing it with a DFE Universal Actuator assembly with a ‘quick-change’ release lock, allowing friction pads to be changed out in seconds.

Circle Reader Service No. 9.

WEB PROCESSING: BOWED ROLLS FOR WEB CONTROL

NASHUA, NH — Nim-Cor, Inc. offers two bowed rolls for the web processing industry: Perma-Bow and Ajusta-Bow. Designed to increase web control, Nim-Cor’s bowed rolls distribute even, lateral tension across the web, ensuring vibration-free operation and long product life.

Circle Reader Service No. 10.

BRIEFLY

Lawton Company of DePere, WI, has recently signed three contracts. These include Georgia Pacific Corporation for the supply of new gearing for the paper machine at its Thorold, ON, mill.

Circle Reader Service No. 11.

GP Port Hudson has chosen Papertech’s Webvision Digital Break monitoring system to retrofit the camera system located on the new No. 5 tissue machine.

Circle Reader Service No. 12.

FLOW METER: MEASURE FLOW OUTSIDE A PIPE

LONG SAULT, ON — Greyline Instrument’s portable ultrasonic flow meter measures flow from outside a pipe and is recommended for troubleshooting, spot checks and balancing flow. Strap-on sensors are mounted on the outside of plastic or metal pipes and ultrasonic signals are injected through the pipe between the two sensors.

Circle Reader Service No. 4.

MOTOR: HIGH VOLTAGE MOTOR

VSTERS, SWEDEN — ABB has recently launched a high voltage motor — Motorformer that is a synchronous motor based on ABB’s innovative cable technology which can be directly connected to the grid and is suitable for a wide range of duties, including refiner drive applications.

Circle Reader Service No. 8.


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