Sulfuric acid manufacturing

Following is a list of other pertinent refs which are currently classified as limited distribution 1) D.C. Coop et al, Modernization Program for Nitric and Sulfuric Acid Manufacture and Concentration at Alabama Army Ammunition Plant , Rapt No 8-67, Contract DAAA21-67-C-0864, C and 1 Girdler Inc, Louisville (1967) 2)E. Banik et al, A Study on... 

Sulfuric acid manufacture released both sulfur oxides and arsenic into the environment. 

Longmaid-Henderson A process for recovering copper from the residue from the roasting of pyrites to produce sulfur dioxide for the manufacture of sulfuric acid. The residue was roasted with sodium chloride at 500 to 600°C the evolved sulfur oxides and hydrochloric acid were scrubbed in water and the resulting solution was used to leach the copper from the solid residue. Copper was recovered from the leachate by adding scrap iron. The process became obsolete with the general adoption of elemental sulfur as the feedstock for sulfuric acid manufacture. 

PuraSiv S A process for removing sulfur dioxide from the tail gases from sulfuric acid manufacture by adsorption on a special zeolite. Not to be confused with PuraSiv HR, Type S. 

Reinluft A flue-gas desulfurization process using coke. The carbon acts as a catalyst for the oxidation of the sulfur dioxide to sulfur trioxide in the presence of water, and the sulfur trioxide is retained on the coke. The coke is regenerated in another vessel by heating with a hot gas stream, which reduces the sulfur trioxide back to sulfur dioxide and expels it for use in sulfuric acid manufacture. The key to this process is the inexpensive adsorbent. Developed by Reinluft GmbH and Chemiebau Dr. A. Zieren GmbH, and marketed as the Reinluft (Clean Air) Process. Four plants had been built by 1985. 

Many older ESPs are of the wire-pipe design, consisting of a single tube placed on top of a smokestack. Dry pipe-type ESPs are occasionally used by the textile industry, pulp and paper facilities, the metallurgical industry, coke ovens, hazardous waste incinerators, and sulfuric acid manufacturing plants, among others, though other ESP types are employed as well. 

Absorption spectra, 23 3 of fats and oils, 10 822-823 of polymethine dyes, 20 506-512 Absorption spectroscopy, infrared reflection, 24 114-116 Absorption towers, in sulfuric acid manufacture, 23 779 Absorptive probes, 11 150 ABS polymers, 10 205-207. See also ABS (acrylonitrile-butadiene-styrene) materials... 

Acid containers, shipping, 23 793 Acid content, of wine, 20 310 Acid coolers, in sulfuric acid manufacture, 23 779-780... 

DOT safety regulations, 25 337 Double absorption process, for sulfuric acid manufacture, 23 769 Double absorption sulfuric acid plants, 23 774... 

Reuse of the waste Stretford sulfur stream at a sulfuric acid manufacturer ... 

Sulfuric Acid. Essentially all sulfuric acid manufactured in this industry is produced by the contact process, in which SO2 and oxygen contact each other on the surface of a catalyst (vanadium pentaoxide) to form SO3 gas. Sulfur trioxide gas is added to water to form sulfuric acid. The sulfur dioxide used in the process is produced by burning elemental sulfur in a furnace. 

Figure 2.3 Contact process for sulfuric acid manufacture.

A. M. Faidie, Sulfuric Acid Manufacture, Reinhold Publishing Co., New York, 1936. 

The electrical precipitation of suspended particles) 2) A.M. Fairlie, "Sulfuric Acid Manufacture", Reinhold, NY (1936) (ACS Monograph Series No 69), pp 138-42 296... 

Aluminum alloy - [MAGNETIC MATERIALS - THIN FILMS AND PARTICLES] (Vol 15) -cerium m [CERIUM AND CERIUM COMPOUNDS] (Vol 5) -electroless plating of [ELECTROLESS PLATING] (Vol 9) -standards and specification [MATERIALS STANDARDS AND SPECIFICATIONS] (Vol 16) -use m sulfuric acid manufacture [SULFURIC ACID AND SULFURTRIOXIDE] (Vol 23)... 

Of the approximately 40 million tons (36 million metric tons) of sulfuric acid manufactured in the United States per year, about 90% is used in the production of fertilizers and other inorganic chemicals. Much of the remaining 10% of H2SO4 is used by the petroleum, petrochemical, and organic chemicals industries. Much of this latter acid is involved in recycling kinds of processes. As pollution regulations in various countries become more restrictive, spent acid may become a much more attractive raw material than has been the case in the past. 

Uses. The chief uses of lead are found in (1) the construction of storage batteries, (2) the manufacture of a wide variety of alloys, (3) the construction of lead chamber sulfuric acid manufacturing plants, and (4) the production of many useful compounds. Some of the more common and useful compounds of lead are listed in Table 11.7. 

The contact process has evolved to become the method of choice for sulfuric acid manufacture because of the ability of the process to produce stronger acid. 

Sulfuric acid Sulfur trioxide mixed with oxygen and nitrogen Sulfur trioxide Sulfuric acid, oleum Sulfuric acid manufacture Stripping not practiced... 

Sulfuric acid. The oxidation of SO2 to SO3 is the step in sulfuric acid manufacture that requires catalysis. The oxidation is exothermic, and the equilibrium becomes more unfavorable for SO3 at higher temperatures. 

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