... A CENTRAL MIXING UNIT - CMU -

for preparing the mixture from raw water and surfactant.

This unit delivers the required volume of mixture depending on the operating status of the plant.

Because of alternating operating conditions this status changes continuously.

For example:

- start and stop of processing machines or conveyor belts

- discontinuous truck-, grab- or wagon dumping

- intermittent operating characteristics of loading and unloading processes

- use of "ECS" subportion controlling

Measuring and controlling instruments of CMU are of advanced technology.

Magnetic inductive impulse turbines generate precise commands to the dosing system -

guaranteeing the lowest consumption of resources such as water, surfactant and energy - a

further "ECS" contribution to conservation.

... A PLC CONTROL SYSTEM

regulating the functions of the CMU itself and generating the commands for "opening/closing" circuits of the solenoid valves which are located at the different mixture spraying points in the plant. This control circuit assures that mixture will be sprayed only if the

The spraying process stops immediately unless both of these conditions exist.

allowing the adjustment of the spraying volume for different operating conditions such as

... changing weather conditions

... and different kind of material to be handled

A special state of the art system may – on special request - extend the "ECS" automatic subportion control to information processing as:

... ambient temperature

... materials temperature and

... intensity of sunshine

... quantity of rain

to detect the motion of the machines and the presence of material as stated above.

Whereas the signal „MACHINES RUNNING OR STOP“ normally will be called up from the existing control system the signal „MATERIAL TO BE CONVEYED PRESENT OR NOT“ will be scanned by ULTRA SONIC PIK UPS that are part of the delivery.

... A NUMBER OF VALVE PANEL ASSEMBLIES – VPA –

which will be located at different points in the plant. These VPA‘s are the links for both the hydraulical and the electrical connection between the CMU and the on-site spraying manifolds.

for mixture, (made from hoses or pipes) to supply the prepared mixture and for gate voltage, (usually 220 V AC) from the CMU to the different spraying points - both directly or via the above mentioned valve control units.

... A FULL SET OF SPRAYING MANIFOLDS

to be fitted at the spraying points. These manifolds carry a differing number of spray nozzle units which are adjusted very carefully to the required spraying volume at each point.

Above spray nozzle units are available in a great number of different types. Any problem can be solved by optimization of these units during project work and/or commissioning:

NOZZLE BODY;

with or without

CHECK VALVE

... "ECS" STANDARD ASSEMBLING MATERIAL

including hose- and pipe clamps - TYPE SIKLA - and fasteners TYPE RADBAND.

This material provides rapid and problem-free assembling. Cable brackets, hose or pipe consoles or other specific assembling material can also be delivered if needed.

no problem. "ECS" can be fully winterized.

The additional equipment required consists of

... a heating system for the hoses and pipes to avoid

freezing during shut-off periods where mixture does

not flow and

... a dosing system for an antifreeze compound. This will

be dosed automatically and is extremely economical

dependent on two actuating variables

- the current temperature and

- the actual volume of mixture flow

Certain companies literature claims that the smaller droplets are the less likely they are to freeze. This statement, of course, is not a scientific one and very misleading as it is only valid on condition that no cristallization nuclei are present. Since the air - particularly around a dust emitting area - is saturated with dust (being above nuclei) it is easy to recognize how fast blocks of ice arise around the areas concerned leading to serious damage and/or considerable shut-off times.

We have available a brochure dealing in detail with the above problem and we will be pleased to send it on request.

... A PROTECTIVE SYSTEM AGAINST DAMAGE BY FROST

This shuts down "ECS" operation if temperature drops to zero °C or to minus X °C, if "ECS" is fully winterized.

as an option we recommend our "ECS TEGI" program. TEGI is an integrated checking cycle

which watches over the entire system.

Additional costs incurred are very low and the TEGI assures immediate fault diagnosis and location - providing

- cost saving and avoidance of shut-down periods by selective and preventive maintenance

- savings on input materials by automatic checking of dosing equipment and mixture volume

The extremely high efficiency of "ECS" when combating air pollution is due to our surface active agent "ECS 89". LINGENBERG ECS 89 was developed and is manufactured for our system to ensure efficient dust suppression and long and faultfree life of all "ECS" parts.

This agent meets the strictest conditions of groundwater protection, environmental protection and personal protection. It is not harmful to the environment or personnel.

"ECS" is a dust suppression system,

"ECS" prevents emissions - diffuse emitted dust particles are trapped and dropped

into the material being conveyed.

"ECS" saves the cost of disposal of large quantities of dust which are collected by

antiquated systems for fighting air pollution.

"ECS" acts before pollutants must be eliminated by much higher cost systems.

"ECS" complies with German clean air regulations TA - LUFT

"ECS" is specifically named as "ECS 89" in the German standard VDI 2584

"ECS" is possible where other techniques are impossible - for example:

- dusty material free falling from high elevation discharge points

i.e. stackers to stock piles etc.

- truck dumping / wagon dumping

- grab bucket outflow from shipunloaders etc.

- discharge and transfer points, etc. etc.

"ECS" eliminates high installation and maintenance cost by preventing housings at

spraying points.

Accumulations of mud - well known and dreaded as VSR = Vast Sludge Residual

effect - inside covers, chutes etc.caused by nebulizers cannot develop.

Our engineers are at your service - worldwide - for consultation on all phases of project work, tendering and project implementation.

For more information please contact our head offices or our branch offices

LINGENBERG Con___Trad___Eng

FASANENWEG 29

D – 58 285 GEVELSBERG

POSTAL ADDRESS

P.O. BOX 1769

D – 58 261 GEVELSBERG

PHONE: + 49 2332 3051

FAX + 49 2332 3052

MOBILE 0171 744 82 63

e - MAIL CONTRADENG@aol.com

AL - WADI GENERAL TRADENG LTD

P.O.BOX 1795

RAS AL KHAIMAH - UNITED ARAB EMIRATES

PHONE: + 971 7 228 5566

FAX: + 971 7 228 7256

e - MAIL

JULIAN T. ERWIN

7289 LAKE BLUFF COURT

WILSONVILLE OREGON 97070

e - MAIL: JTERWIN@msn.com