Petrobras - Pernambuco

Acid Plant Database June 25, 2014

Owner	Petrobras
Location	Pernambuco, Brazil
Background	-
Website	www.petrobras.com.br
Plant	RNEST Refinery
Coordinates*	8° 22' 46" S, 35° 1' 41" W
Type of Plant	Wet-Gas Sulphuric Acid (WSA)
Gas Source	Power Boiler - heavy fuel oil and petroleum coke
Plant Capacity	750 MTPD 650,000 Nm3/h	750 MTPD 650,000 Nm3/h
SA/DA	SA	SA
Emissions	PM: < 1 mg/Nm³, 3% O₂ B.S. SOx: 1203 mg/Nm³, 3% O₂ B.S. NOx: 119 mg/Nm³, 3% O₂ B.S. NOx: 132 mg/Nm³, 1% O₂ B.S.	PM: < 1 mg/Nm³, 3% O₂ B.S. SOx: 1203 mg/Nm³, 3% O₂ B.S. NOx: 119 mg/Nm³, 3% O₂ B.S. NOx: 132 mg/Nm³, 1% O₂ B.S.
Status	Construction	Construction
Year Built	2013	2013
Technology	Haldor Topsøe
Contractor	-
Remarks	-
Pictures
General	-
References	Cobras 2013 - Petrobras using Topsoe SNOX Sulphuric Acid Technology for Flue and Sour Gas Treatment in the New RNEST Oil Refinery in Pernambuco, Brazil, Rodrigo Lavich and Torben Christensen
News	November 29, 2011 - Topsoe has signed an agreement with Brazilian oil major Petrobras to supply critical equipment and materials for two SNOX plants. The SNOX plants will clean the off gases from three boilers in the refinery that supplies electricity and steam for internal use. The plants will be installed at the new RNEST grass root refinery in Pernambuco, Brazil. The supply covers internals for 80 WSA condensers for condensation of sulphuric acid, eight units for acid mist control and a complete acid system. The SNOX plants will clean the off gases from three boilers in the refinery that supplies electricity and steam for internal use. The boilers are fired with heavy fuel oil and petcoke. Based on catalytic processes the SNOX technology converts sulphur dioxide to industrial grade sulphuric acid and NOx to harmless nitrogen. In addition to treating the boiler flue gases, the Claus plant tail gases, the amine gases containing hydrogen sulphide and the SWS gases containing ammonia will also be treated in the SNOX plants. The plants are designed for possible elimination of the Claus plants, which then means that all sulphur compounds in the refinery are converted into sulphuric acid. The two plants will be installed in parallel and will each treat up to 650,000 Nm³/h of flue gas while producing up to 750 MTPD of sulphuric acid. In addition to the production of sulphuric acid, up to 100 ton/hour of high pressure steam will also be exported from the SNOX^TM plants to the refinery steam grid. The contract for basic engineering was signed with Petrobras earlier and has already been executed. The supply of equipment will take place during the coming 16 months, and start-up of the SNOX plants is planned for 2013.

MTPD - Metric Tonne per Day STPD - Short Ton per Day
MTPA - Metric Tonne per Annum STPA - Short Ton per Annum
SA - Single Absorption
DA - Double Absorption

* Coordinates can be used to locate plant on Google Earth


Sulphuric Acid on the Web^TM	Technical Manual	DKL Engineering, Inc.