innovat

EDT has produced innovative engineering solutions in a variety of projects, some of which are given below.....

	Boiler Combustion Control System
	Feasibility of high temperature filtration of combustion off-gases
	RCP filter media collection efficiency tests
	Permeable wall cyclone

Project summary : Premier Foods process foods requiring steam which is provided by a number of coal fired shell boilers. As part of a continuing on-site development programme, EDT is installing state-of-the-art boiler control equipment. This gives better steam pressure control, reduced noise, improved combustion/lower fuel consumption and lower electricity consumption. EDT carried out the entire project, designing, procuring, sub contracting, installing, commissioning and handing over the new boiler control systems. This is one of several companies where EDT's control system has improved amenity and reduced fuel consumption.

Project summary: This study investigated the technical feasibility of particulate removal from incineration flue gases above the de novo dioxin reformation temperature, and considered the financial viability of such a system. Several aspects of incineration and gas cleaning have been studied including fouling, corrosion, heat recovery, particulate and gas behaviour at high temperatures, which has resulted in a outline design of a small-scale

Project summary: EDT were engaged to assist TEXON in an assessment of a range of rigidised, felt based filter media. The assessment is to provide benchmark information on the media for comparison with conventional needlefelts in P84 and comprises a series of laboratory tests to provide comparative filtration data between conventional needlefelts and the rigidised filter media. This involved EDT in building a large laboratory test rig and developing a test programme with appropriate instrumentation to assess the collection efficiency, cleaning performance and pressure loss of 2 needle felts and 4 rigidised filter media. Samples of the 6 filtration media were mounted in a laboratory test filter rig and exposed to a laboratory filter test at ambient conditions. Samples pre- and post-test were examined using a number of physical methods including scanning electron microscopy.

Project summary: Control of atmospheric dust emissions, or recovery of fine product material from gas streams are major commercial concerns, which show the importance of gas cleaning technology in industry. Keeping the cost, and size, of gas cleaning plant down is critical to competitiveness. This project was designed to test and demonstrate a new hybrid cyclone/filter separator that could offer cost and size efficient particulate collection for a number of industrial processes, including solid fuel combustion for steam raising.

A patent search has confirmed the novelty of the new collector. Its key feature should allow the combination of conventional fluid mechanics of a simple inertial cyclone separator with the superior performance of a filter. It allows more particulate material to remain in close proximity to the separator wall and hence increases the proportion of solids captured.

The technical objective of this work was to demonstrate a significant improvement in particulate collection efficiency for the novel separator over that of conventional cyclones. A prototype cyclone was constructed, based on an existing commercial test rig. On-line particle sizing was to be used, so that detailed grade efficiency information could be obtained for a range of operating conditions.

The broad objective of demonstrating improved cyclone dust collection was successfully achieved.