 WARRENVILLE, Ill.--BUSINESS WIRE--Fuel Tech, Inc. NASDAQ: FTEK, a technology company providing advanced engineering solutions for the optimization of combustion systems, emissions control and water treatment in utility and industrial applications, today announced that it will issue its financial results for the first quarter ended March 31, 2021 on Wednesday, May 12, 2021 after the close of the stock market. Management will host a conference call on Thursday, May 13, 2021 at 10:00 am ET 9 