TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The co-scrubbing sub-system includes a vessel for contacting the syngas with water. The sulfur removal system includes: a carbonyl sulfide hydrolysis reactor; and hydrogen sulfide reactor configured to contact the syngas stream with iron chelate. The additional particulate removal sub-system includes a system that relies on electrostatic forces. The crude syngas stream quenching sub-system, the co-scrubbing sub-system, and the particulate removal sub-system are the unitary component.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process further comprises: providing the clean syngas stream to at least one system comprising power generation system (107), liquid fuel, chemical manufacture system, hydrogen production system, carbon monoxide production system, gaseous fuel production system, substitute natural gas production system and/or fuel cell system; and removing mercury from the syngas stream after removing particulate matter. The co-scrubbing includes contacting the syngas stream with water, which may be pH adjusted. The unitary process comprises contacting of water with the crude syngas stream to cool the crude syngas stream, remove particulates from the crude syngas stream and simultaneously remove ammonia and hydrochloric acid from the crude syngas stream. The step of removing sulfur includes: reacting carbonyl sulfide in the syngas stream to convert carbonyl sulfide to hydrogen sulfide; removing sulfur includes reacting hydrogen sulfide in the syngas stream with iron chelate; or contacting the syngas with a carbonyl sulfide hydrolysis catalyst and hydrogen sulfide sorbent. The step of removing additional particulate matter includes relying on electrostatic forces. The quenching the crude syngas stream, co-scrubbing the syngas stream and removing particulates from the syngas stream are a unitary process. Preferred Components: The crude syngas stream is gasified waste with waste comprising at least one member comprising municipal solid waste, commercial and industrial waste, refuse derived fuel, construction and demolition waste, hazardous waste, oil waste and/or sewage waste. The clean syngas stream is a clean syngas stream for power. EXAMPLE - Crude syngas stream having 40000 mg/Nm3 of particulates at a temperature of 1800 degrees F and a pressure of 0 psig was input at 65000 Nm3/hour into a syngas clean-up train. The crude syngas stream was fed to a dual Venturi scrubber where the gas was cooled with 290-445 m3/hour of water, to 150-200 degrees F. Simultaneously a significant portion of the particulates, ammonia and hydrochloric acid was removed. Tar removal was enhanced by using a large quantity of water at a fast quenching rate in the dual Venturi scrubber. Particulate removal in the dual Venturi scrubber could be between 50-90% depending on the particle size distribution. The particulate concentration of the quenched syngas stream was 10000 mg/Nm3. The gas passes through a direct contact cooler where the gas was further cooled to 110 degrees F, particulates were removed and hydrochloric acid and ammonia were further removed. 90-99% of the input 3000 ppm ammonia and 95-99% of the input 3000 ppm hydrochloric acid were removed by passing through the dual Venturi scrubber and the direct contact cooler. The wet electrostatic precipitator or the additional particulate removal sub-system removes remaining particulates from the syngas and exiting syngas had 1-30 mg/Nm3 particulates. Mercury was substantially removed on a sulfur impregnated activated carbon bed, followed by a carbonyl sulfide hydrolysis reactor where 90-95% of carbonyl sulfide was hydrolyzed to hydrogen sulfide and a hydrogen sulfide removal system where 95-99% of hydrogen sulfide was removed by at the iron chelate process. The clean syngas stream was then combusted in a gas turbine, followed by a steam turbine coupled with heat recovery steam generator. The clean syngas stream contains less than 50 mg/Nm3 or 1-30 mg/Nm3 or 1-3 mg/Nm3 particulates, 30-150 ppm hydrochloric acid, 30-300 ppm ammonia, 50-250 ppm hydrogen sulfide, 25-50 ppm carbonyl sulfide, and 0-10 ppm mercury.