AbstractApproximately 50 years have passed since Electrostatic Precipitator (ESP) was introduced for industrial use in Japan .  During this period, with the high-level economic growth of Japan and the great development of a variety of industries along with stricter environmental regulations, the number of ESP installed as main equipment for flue gas treatment greatly spread throughout Japan .

Meanwhile, the research and development of ESP technology have made remarkable progress with the use of a variety of new or improved techniques.

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Abstract
This paper discusses the ElectroCore^TM system, a novel advanced particulate control technology for the power generation industry, which can improve ESP performance in a cost-effective manner thereby increasing fuel flexibility and helping plants prepare for regulatory changes.

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Abstract
For oil fired boiler plant, SO₃ gas is cooled down forming very fine mists through wet type flue gas desulfurization system (wet-FGD).  Therefore, removal of SO₃ mists is very poor at FGD absorber, which causes a long visible smoke from the stack.  To overcome this problem, installation of wet type electrostatic precipitator (wet-ESP) is the most suitable, however this system is not widely used due to the space limitation or expenses.

An advanced gas cleaning system has been developed, which incorporates the function of wet-ESP into wet-FGD.  This paper introduces the principle of the new technology, along with the operational experience at the commercial scale plant, where the specific W-value showed about three times higher than that for the conventional wet-ESP.

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Abstract
The everlasting subject of ESP technology development is to reduce equipment construction cost, to enlarge application range.   Surrounding the target, China has developed diversiform ESP with new structure mode.  A kind of light type ESP is introduced in this paper.  Different from traditional structure mode, anode is also of wire type structure.  Between cathode and anode add assistant electrode insulated form the ground.  Practice proves that it it insensible to collect high specific resistance, with excellent dust collecting performance at the same time.

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Abstract
Secondary flue gas in thermal workshop has been treated by Roof ESP.  It has the characteristics that not taking up areas of the factory district, no needing fan and discharging chimney, saving energy, etc.  In this paper by the research, design and application on Roof ESP for converter workshop, the structure optimization design for Roof ESP has been put forward, including how to decrease the short circuit airflow in the electric field to increase effective areas of electric field, how to low the resistance in the electric field to make flue gas with insufficient thermal pressure enter the electric field, canceling heating organs, reducing failures, etc.  It has been also discussed that how to confirm primary parameters such as flue gas flow and the noticeable points of maintenance & operation for Roof ESP.

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