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Process Equipment Update

China venture combines the manufacture, assembly and testing of new centrifuges


entrifuge specialist – UK-based Thomas Broadbent – has established a new workshop

facility in the Greater Shanghai Region of Yangzhou, China.

The new venture combines the manufacture, assembly and testing of new centrifuges with a comprehensive service and repair facility, established to provide complete support for all types of centrifuge technology – including machines supplied by a wide range of international suppliers. The availability of Broadbent design technology and practical hands-on experience, coupled with economies achieved by taking advantage of Chinese labour, should provide an attractive option for a variety of centrifuge operators throughout the Chinese process industries. To maximise cost-saving benefits, the majority of materials are to be sourced in China, but only after extensive testing

against Broadbent UK high quality standards. Initially, a number of specialised, high quality components will be supplied from the UK. The Yangzhou Centrifuge facility is now open for business and has already refurbished its first machines and gearboxes for use in the manufacture

of PVC and provided site services for customers processing Calcium Carbonate. Headed by Dr Weihong Zhao, the new

Broadbent China team is maintaining close contact with all the company’s existing customers operating in many parts of the Chinese process industries – including manufacturers of PTA for the production of man-made- fibres.

The skills used in the servicing of centrifuges are almost universal and can be easily applied to benefit non-Broadbent operators. Many specialist services, including high precision balancing – using a Schenk 8 tonne balancing machine – are also available as part of the Company’s total capability in centrifuge support. l

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Thomas Broadbent & Sons Ltd is based in Huddersfield, West Yorkshire, UK.

Variable-speed drives control up to three motors each


acon is launching new compact variable-speed drives that offer users the

opportunity to save money and space by controlling up to three motors with a single drive. This is achieved by using the company’s innovative PFC (pump and fan control) technology, which is now a standard feature of all drives in the Vacon 10 range. With PFC enabled, the drive uses its internal PI regulator to control the speed of the first of the three motors to match the demand for pressure, temperature or flow. When the first motor is running at full speed, the drive issues a command for the second motor to start. Similarly, when demand exceeds capacity with two motors running, the drive starts the third. According to user requirements, the operation of the PFC system can be configured so that the same motor is always the lead, or so that the duties rotate around the motors to help ensure that they receive the same amount of use.


Vacon 10 drives are said to be easy and convenient to specify and use, having been specifically developed to eliminate unnecessary complexity while retaining all of the features needed for standard applications. Available with power ratings from 0.25 to 2.2kW for use with single- phase supplies, and 0.37 to 5.5kW for use with three-phase supplies, these compact drives have been designed to make good use of space within the control panel. They range in size from just 66 x 157 x 98mm to 100 x 262 x 109mm depending on rating, and are equally suitable for screw fixing or for mounting on DIN rail.

All drives in the range offer PI control as standard and all but the smallest units incorporate an integrated brake chopper. As an option, all versions can be supplied with internally mounted EMC filters that comply with the Category C2 requirements of EN 61800-3.l

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Recovering heat energy from compressors


tlas Copco Compressors is launching new ER S -1,- 2, and -3 retrofit energy

recovery kits for its GA11-90 rotary screw compressor range, enabling the recovery of up to 94 per cent of the compression heat energy that would normally be wasted. Suitable for use across a broad spectrum of industries, the new range of standalone, plug-and- play energy recovery units can achieve 72-94 per cent of energy recovery in the form of hot outlet water, at temperatures of up to 90˚C.

The feature a stainless steel oil/water heat exchanger that is designed for simple installation, fast commissioning, reduced service downtime and increased safety and environmental conditions. All major mechanical parts of the units are pre-mounted within the enclosure. l

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