Southern States - Wilmington

Acid Plant Database April 14, 2024

Owner	Southern States Chemicals
Location	2600 US-421 South Wilmington, North Carolina USA 28401
Background	Part of Dulaney Industries Formerly Koch Sulfur Products 2001 - Acquired by SCC
Website	www.sschemical.com
Plant	Plant No. 1	Plant No. 3	New Plant (Wilbara LLC)
Coordinates*	34°16' 22" N, 77° 57' 10" W	-	-
Type of Plant	Sulphur Burning	Sulphur Burning	-
Gas Source	Elemental Sulphur	Elemental Sulphur	-
Plant Capacity	H₂SO₄ and Oleum: 125 STPD	106 STPD	-
SA/DA	SA	SA	-
Emissions	SO₂: 27 lb/ton Acid Mist: 0.5 lb/ton NOx: 5.8 lb/ton Opacity: < 40%	SO₂: 27 lb/ton Acid Mist: 0.5 lb/ton NOx: 5.8 lb/ton Opacity: < 40%	-
Permits	Permit No.: 1853T15 Facility ID: 6500118 Issue Date: April 28, 2006 Expiration Date: March 31, 2011
Status	Operating	Operating	-
Year Built	-	-	-
Technology	-	-	-
Contractor	-	-	-
Remarks	-	-	-
Pictures
General	-
Reference	Photos from www.sschemical.com North Carolina Air Quality Permit No. 1853T15
News	June 10, 2011 - State environmental officials recently recommended that the Environmental Protection Agency postpone designating the Wilmington area as non-attainment or not in compliance with the new federal air quality standard for sulfur dioxide, or SO₂. Measurements by the N.C. Division of Air Quality, or DAQ, show that the New Hanover County monitor does not meet the more stringent SO₂ standard that the EPA adopted in June 2010. States were required to submit recommendations by last Friday for the boundaries of SO₂ attainment and non-attainment areas, or those areas not meeting the standard. The N.C. Department of Environment and Natural Resources recommended that the EPA defer its designation of a non-attainment area for New Hanover County due to the closure of several large sources of SO₂ in the area and the resulting drop in measured SO₂ levels. Southern States Chemical and WASTEC have shut down their facilities near the monitor, and Progress Energy plans to convert its nearby Sutton plant from coal to natural gas by early 2014. The New Hanover County monitor has measured no SO₂ values above the new standard so far in 2011. “I request that the USEPA consider deferring a nonattainment designation for this area until after 2012,” Dee Freeman, secretary of the N.C. Department of Environment and Natural Resources, stated in a June 2 letter to the EPA. “…It is possible for the Wilmington monitor to attain the 1-hour SO₂ standard by the end of 2012.” If the EPA will not agree to postpone the non-attainment decision for Wilmington, the state environmental agency has recommended that the federal agency designate the northwestern corner of New Hanover County, bounded by the Cape Fear and Northeast Cape Fear rivers and the Pender County line. Non-attainment areas are regions officially designated by the EPA as not meeting air quality standards, and the state must develop plans for bringing such areas back into compliance. Industries that emit SO₂ may face more stringent requirements in non-attainment areas. Sulfur dioxide is one of six criteria or major pollutants specified in the federal Clean Air Act. It is a pungent gas that is unhealthy to breathe, can damage vegetation and materials such as buildings, and contributes to the formation of haze, particle pollution and acid precipitation. High levels of SO₂ can cause or worsen respiratory ailments such as asthma, bronchitis and emphysema and aggravate existing heart disease. Populations most affected include children, the elderly and other sensitive groups. In June 2010, the EPA adopted a more stringent SO₂ standard of 75 parts per billion (ppb) averaged over one hour. Previously, there were three SO₂ standards: 500 ppb averaged over 3 hours, 140 ppb averaged over 24 hours, and 30 ppb averaged over a year. Compliance with the federal SO₂ standard is determined by a formula based on a three-year average of the 99^th percentile of the daily maximum one-hour concentrations. Under that formula, the design value for the air monitor located in New Hanover County is 110 ppb

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


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