Agricultural
Synthetic Organic
Process Vents, Storage Vessels, Transfer and Wastewater Treatment Operations
SOCMI Compliance
Thermoplastics
Polymers and Resins
Fiber Production
Figure VI-15 gives the target regulation date for the following inorganic chemicals.
Source Category: Ammonium Sulfate Production — Caprolactam By-Product Plants
The Ammonium Sulfate Production — Caprolactam By-Product Plants source category includes the production of ammonium sulfate as a by-product in the production of caprolactam, which is used as an intermediate for Nylon 6. The category includes, but is not limited to, ammonium sulfate produced when sulfuric acid is used to rearrange cyclohexanone oxime to caprolactam sulfate, which is then reacted with ammonia to yield ammonium sulfate and caprolactam.
Source Category: Antimony Oxides Manufacturing
The Antimony Oxides Manufacturing source category includes any facility engaged in the production of antimony oxides, typically white, odorless, crystalline powders, mainly used as a synergistic flame retardant in plastics and textiles. The category includes antimony oxides produced from sulfide ores containing antimony or as a by-product of the treatment of sulfide ores of base metals and silver. The production of antimony oxides from sulfide ores containing antimony includes operations such as roasting, smelting in a blast furnace, and melting in a crucible or reverberatory furnace with a reducing atmosphere.
Source Category: Chlorine Production
The Chlorine Production source category includes any facility engaged in the production of chlorine. The category includes, but is not limited to, facilities producing chlorine by the following production methods: diaphragm cell, mercury cell, membrane cell, hybrid fuel cell, Downs cell, potash manufacture, hydrochloric acid decomposition, nitrosyl chloride process, nitric acid/salt process, Kel-Chlor process, and sodium chloride/sulfuric acid process.
Source Category: Chromium Chemicals Manufacturing
The Chromium Chemicals Manufacturing source category includes any facility engaged in the production of chromium-based chemicals. The category includes, but is not limited to, production of sodium chromate, produced by roasting chromate ore with soda ash or with soda ash and lime in a kiln; sodium dichromate, produced by converting sodium chromate by treatment with sulfuric acid; and secondary chromium chemicals derived from sodium dichromate, such as potassium chromate and dichromate, ammonium dichromate, chromic acid, basic chromic sulfate, chromic oxide, and chrome pigments.
Source Category: Cyanuric Chloride Production
The Cyanuric Chloride Production source category includes any facility engaged in the production of cyanuric chloride, a crystalline compound used in chemical synthesis, dyestuffs, herbicides, and optical brighteners. The category includes, but is not limited to, production of cyanuric chloride by the reaction of sodium cyanide with chlorine to produce cyanogen chloride, which then trimerizes to yield cyanuric chloride.
Source Category: Fume Silica Production
The Fume Silica Production source category includes any facility engaged in the production of fume silica. Fume silica is a fine white powder used as a thickener, thixotropic, or reinforcing agent in inks, resins, rubber, paints, and cosmetics. The category includes the production of fume silica by the combustion of silicon tetrachloride in hydrogen-oxygen furnaces.
Source Category: Hydrochloric Acid Production
The Hydrochloric Acid Production source category includes any facility engaged in the production of hydrochloric acid. The category includes, but is not limited to, production of hydrochloric acid via any of the following methods: (1) production of hydrochloric acid as a by-product in the manufacture of organic chemicals; (2) direction reaction of salts and sulfuric acid (Mannheim process); (3) reaction of a salt, sulfur dioxide, oxygen, and water (Hargreaves process); or (4) burning chlorine in the presence of hydrogen gas.
Source Category: Hydrogen Cyanide Production
The Hydrogen Cyanide Production source category includes any facility engaged in the production of hydrogen cyanide. The category includes, but is not limited to, production of hydrogen cyanide using any of the following methods: reaction of methane and ammonia over a platinum catalyst; reaction of methane and ammonia over a platinum-rhodium catalyst; co-production with acrylonitrile (via Sohio process); and pyrolysis of formamide.
Source Category: Hydrogen Fluoride Production
The Hydrogen Fluoride Production source category includes any facility engaged in the production of hydrogen fluoride. The category includes, but is not limited to, production of hydrogen fluoride by reacting calcium fluoride with sulfuric acid.
Source Category: Phosphate Fertilizers Production
The Phosphate Fertilizers Production source category includes any facility engaged in the production of phosphate-based fertilizers including, but not limited to, plants with bulk-blend processes, fluid-mix processes, or ammonia granulation processes. Examples of phosphate fertilizers are ammonium phosphates, triple superphosphates, and diammonium phosphates.
Source Category: Phosphoric Acid Manufacturing
The Phosphoric Acid Manufacturing source category includes any facility engaged in the production of phosphoric acid. The category includes, but is not limited to, production of wet-process phosphoric acid and superphosphoric acid.
Source Category: Quaternary Ammonium Compounds Production
The Quaternary Ammonium Compounds Production source category includes any facility engaged in the production of quaternary ammonium compounds, which are usually tetra-substituted ammonium salts. Quaternary ammonium compounds are produced by the reaction of a tertiary amine with an alkylating agent, usually an alkyl ester; other methods can be used depending on the desired product.
Source Category: Sodium Cyanide Production
The Sodium Cyanide Production source category includes any facility engaged in the production of sodium cyanide, a white crystalline solid commonly called white cyanide. The category includes, but is not limited to, production of sodium cyanide via the neutralization process, or so-called wet process, in which hydrogen cyanide reacts with sodium hydroxide solution usually in a unit system that embodies evaporation of water and crystallization of the product.
Source Category: Uranium Hexafluoride Production
The Uranium Hexafluoride Production source category includes any facility engaged in the production of uranium hexafluoride, a colorless, volatile crystal, usually used in the gaseous diffusion process for separating isotopes of uranium. The category includes, but is not limited to, the following production methods: (1) the direct fluorination of uranium tetrafluoride; and (2) the conversion of triuranium octoxide directly to uranium hexafluoride with hydrogen fluoride and fluorine.