Mazda Limited
                                    - A company profile 

Steel Industry

Steel Degassing:

For your VD and VOD plants, Mazda offers special multi-nozzle booster ejector system that yields stronger and superior alloy steel. This procedure entails the removal of dissolved gasses from molten steel, which contributes towards a drastic improvement in the quality of the end product. Necessary for this application are large multi-stage ejectors as well as barometric condensers which can have vacuum ranges as low as 10 microns.

Also used in this application as multi-stage steam jet vacuum pumps clubbed together with liquid ring pumps, which ultimately save on cost for the customer and user. Jet Vacuum pumps have a relatively low investment cost, they withstand tough conditions and are extremely durable and reliable.

The process requires handling of high suction capabilities via high volume flows of many thousand kg/hr, and jet vacuum pumps undertake the swift evacuation of the process tank at the required pressure. Our repeat orders from consultants and end users indicate that Mazda has a long track record of satisfied customers.

Power Industry

Jet ejectors are the most versatile of all industrial apparatus. They are used in numerous applications to pump, mix, heat, cool and produce vacuum. Generation of more Megawatts a dream.
 
Try our steam jetair ejector vacuum systems.

MAZDA build more turbine extraction systems for power plants than anyone else in the country.

In the power production business, power plants are finding value in hidden capacity-additional megawatts of uprating or kilowatt-hours of production that can be squeezed from an existing unit. A local utility plant recently gained stealth capacity by replacing an old vacuum system with MAZDA Vacuum Evactor.

The plant had been derated by approximately 10 MW because of poor air removal from its steam-turbine condenser. Mazda studied the problem and concluded that condenser Vacuum could be improved by at least 15mm Hg using its model no. CR Series 200S.

When CR series was installed and started up, it improved condenser vacuum drastically than the original test condition. The power plant thereby picked up, 5 MW of hidden capacity and the cost of CR Series 200S was recovered in less than a month and the savings will go on as long as the plant remains in services.

Our SJAE Systems supplied for large power plants include the following:

In addition, our SJAE Systems from India are regularly exported to Alstom Brazil, Fluidel Italy, Nuovo Pignone Italy etc.
 
The efficiency of a Steam-turbine is mainly determined by the pressure of the steam at its outlet. The Turbine Surface Condenser is therefore maintained under vacuum. To enable this, the Steam Jet Ejector Vacuum System must be capable of removing all non condensable and associated water vapour from the surface condenser to produce the minimum steam condensing pressure consistent with physical dimensions and heat transfer and to provide for deaeration of the condensate. The sources of non-condensables include air, leakage through all system components operating below atmospheric pressure, gases released from feedwater drains and vents admitted to the condenser , gases released for make-up admitted to the condenser, condensate surge tank when utilized in a closed cycle and disassociation of feedwater into oxygen, hydrogen and non condensables.
 
The recommended design pressure of the Steam Air Ejector (SJAE) System is as follows: 

• For electric generation service : The design pressure is 0.035 ata (25.4 mm Hg(a)) or the condenser design pressure whichever is lower
• For pumps, compressors and other mechanical drives : The design pressure is that for which the condenser is designed minus 0.035 ata (25.4 mm Hg(a))

Vegetable Oil

Vacuum is necessary during various steps of vegetable oil processing. These steps essentially include hydrogenation, fractionation, bleaching, deodorization and de-acidification. Out of all vacuum equipments, Ejector Vacuum System has established the superiority and versatility of their use as compared to the mechanical vacuum pump. The most outstanding advantage of the Steam Jet Ejector is the total absence of moving parts, which eliminate mechanical breakdown, and assures constant and dependable operation with freedom from repairs. No adjustment or lubrication is required nor are any specially trained operators necessary as their operation is very simple.

Over and above this, as Steam Jet Vacuum System convey at very high velocity which are many times the speed of sound, they are capable of handling large volume under vacuum thus making them eminently suitable for deodorization application wherein high quantity of open / sparging steam has to be handled.

• Bleaching / drying
• Deodorizing
• Fractionation
• Distillative de-acidification

Ethylene-Glycol-MEG

Mazda’s Ethylene-Glycol Operated Ejector Vacuum System:

Mazda's Mono Ethylene-Glycol Operated Ejector Vacuum System eliminates the need for boilers and steam for your polyester plant, thereby drastically reducing running cost. You can recover the cost of the ejector system in as little as four months and the savings will continue for as long as the plant remains in service.

Find out how, below.:

Mazda has now pioneered its ethylene-glycol operated vacuum systems. In the production of polyester polymers, the deisngs of such systems enable effective waste reduction and energy conservation in reactor service. The motive fluid (MEG) in these systems is ethylene glycol which in the reactor ejectors acts as process solvent.

How is this achieved:

Regular steam ejector systems based on ethylene glycol (the process solvent), cause steam condensate contamination. In addition to this, the end result of the polymer carryover from the process contaminates the initial stages of the ejector and leads to time-consuming shut downs for cleaning. The eradication of ejector fouling and effective solvent recovery and key factors in the design of Ethylene-Glycol Operated Ejector Vacuum Systems.

The process is simple – the use of process solvent as the motive fluid, the contamination of such steam condensate is eliminated by design. Secondly, due to the nature of MEG driven ejectors which operate at a higher temperature than conventional steam jet ejectors, the second problem of fouling of the units by polymer carryover is also reduced. An added benefit of such a system is that the process contamination (usual caused by the backstreaming of steam in conventional ejectors) is eliminated via the use of organic vapour. With these waste – reducing features of such a design, it is easy to see why such a system would be economically advantageous. From an operational point of view, the energy requirements are automatically reduced because of the high boiling point requirement of this system which mean that the intercondensers operate at lower pressures than conventional vacuum systems. This has a threefold effect – lower cooling media requirements, condensate is eliminated and as mentioned above, the drastic savings in operational costs.

In addition to polymer dissolution and waste reduction there is an added benefit of longetivity and reliability of the design. The chances of corrosion and significantly reduced via the use of MEG jets. Several industries benefit from all the advantages offered by this clever design. As a testimony to our design philosophy, Reliance industries recently installed Mazda’s Ethylene-Glycol Operated Ejector Vacuum Systems and stopped steam generation throughout their six polyester plants. This is all possible through Mazda’s state-of-the art R&D centre equipped with the latest technology and modern testing instruments.

Currently, Mazda is the only company in the world to virtually simulate identical site conditions for testing these ejectors for hassle-free installation at your plant. Our system is highly efficient and very compact as compared to our closest German competitiors.

About MAZDA LIMITED

Mazda is a truly unique engineering company, situated in the Western Region of India. While India surges ahead in the field of manufacturing and engineering, Mazda partakes in this journey. What sets Mazda apart from its peers in India, is the fact that Mazda has acquired high powered technologies from the West. This combined with its modern R&D center, its high standards for quality and its customer-focused approach, have made Mazda a leading company globally..

For more details: https://www.mazdalimited.com 
Email: info@mazdalimited.com