Ammonium sulfate and bisulfate formation in air preheaters by J. M Burke

Cover of: Ammonium sulfate and bisulfate formation in air preheaters | J. M Burke

Published by U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory, Center for Environmental Research Information [distributor] in Research Triangle Park, NC, Cincinnati, Oh .

Written in English

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Subjects:

  • Thermodynamics,
  • Ammonium salts,
  • Flue gases -- Desulfurization

Edition Notes

Book details

StatementJ.M. Burke and K.L. Johnson
ContributionsJohnson, K. L, Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
The Physical Object
Pagination11 p. :
Number of Pages11
ID Numbers
Open LibraryOL14892525M

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Ammonium sulfate and bisulfate formation in air preheaters Unknown Binding – January 1, by J. M Burke (Author) See all formats and editions Hide other formats and editions. Inspire a love of reading with Prime Book Box for Kids Discover delightful children's books with Prime Book Box, a subscription that delivers new books every 1, 2, or Author: J.

M Burke. Get this from a library. Ammonium sulfate and bisulfate formation in air preheaters. [J M Burke; K L Johnson; Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)]. Ammonium bisulfate (ABS) forms in coal-fired power plant exhaust systems when ammonia slip from the NO x control system reacts with the sulfur oxides and water in the flue gas.

The critical temperature range for ABS formation occurs in the air preheater, where ABS is known to cause corrosion and pluggage that can require unplanned outages and expensive by: John and Mary Nichols Rare Books and Special Collections; Library Service Center; Price College Digital Library; Western History Collections.

@article{osti_, title = {Ammonium sulfate and bisulfate formation in air preheaters. Final report Oct Oct 81}, author = {Burke, J M and Johnson, K L}, abstractNote = {The overall goal of this study was to investigate the problems which result from deposition of ammonium sulfates in an air preheater.

More specifically, the study had three major objectives. Home; All editions; This edition;English, Book, Illustrated, Government publication edition: Ammonium sulfate and bisulfate formation in air preheaters / J.M.

The complete report, entitled "Ammonium Sulfate and Bisulfate Formation in Air Preheaters," (Order No. PB ; Cost: $, subject to change) will be available only from: National Technical Information Service Port Royal Road Springfield, VA Telephone: The EPA Project Officer can be contacted at: Industrial.

Ammonium sulfate and bisulfate formation in air preheaters [microform] / J.M. Burke and K.L. Johnson U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory ; Center for Environmental Research Information [distributor] Research Triangle Park, NC: Cincinnati, Oh.

Wikipedia Citation. Wei JY, Muzio, LJ, Dunn-Rankin D, Stallings J. Formation temperature of ammonium bisulfate at simulated air preheater conditions. In: Paper 1G 32nd international Ammonium sulfate and bisulfate formation in air preheaters book symposium, Montreal, Canada, August 3–9 ().

Ammonium bisulfate (ABS) is an acidic deposit that can form on the metal elements of air preheaters in power boilers, leading to unit operational issues. As a byproduct of the. In order to explore the mechanism of low‐temperature ash deposition induced by ammonium bisulfate (ABS), ash deposits, and a corroded heat transfer plate in the rotary air preheater (RAPH) of a.

Ammonium sulfate and bisulfate formation in air preheaters This edition published in by U.S. Environmental Protection Agency, Industrial Environmental Research Laboratory, Center for Environmental Research Information [distributor] in Research Triangle Park, NC.

Cincinnati, Oh. Ammonium hydrogen sulfate is a colorless to white, powdered solid. It is toxic by ingestion. When heated to high temperatures, it may release toxic sulfur oxide and nitrogen oxide fumes.

It is soluble in is a chemical catalyst, used in hair preparations. The concentration of ammonium sulfates aerosol increased with decreasing temperature. Therefore, the initial formation temperature of ammonium bisulfate was higher than the condensation temperature in the actual air preheater.

When the concentration of NH3 was 5 μL/L, the number concentration of ammonium bisulfate aerosol was × /cm3. Limin Wang, Yufan Bu, Dechao Li, Chunli Tang, Defu Che, Single and multi-objective optimizations of rotary regenerative air preheater for coal-fired power plant considering the ammonium bisulfate deposition, International Journal of Thermal Sciences, /malsci,(52.

Reaction of ammonia with sulfur trioxide in the flue gas produces ammonium sulfate [(NH 4) 2 SO 4] and ammonium bisulfate (NH4HSO4). Both of these, and particularly bisulfate. Ammonium sulfate and bisulfate formation in air preheaters.

Trove Find and get Australian resources Books images historic newspapers maps archives and more. Details; The Engine Heater Australian Model Cooling System Preheater.

The mechanism of ammonium bisulfate formation and decomposition over V/WTi catalysts for NH 3 -selective catalytic reduction at various temperatures.

Physical Chemistry Chemical Physics19 (23), DOI: /C7CPC. The blockage of air preheater caused by ammonium bisulfate (ABS) associated with SCR denitration is serious, closely related to the adhesion of ABS and ash particles on the wall of the air preheater.

The first was to determine the conditions under which ammonium sulfates are expected to form. The second objective was to identify the factors which influence the formation of ammonium sulfates. The third objective was to identify and evaluate methods for preventing ammonium sulfate deposition/corrosion in air preheaters.

In this study, the mechanism of ammonium bisulfate (ABS) formation and decomposition over V/WTi for the NH 3-selective catalytic reduction (SCR) at various temperatures was deeply d bidentate, chelating bidentate, and tridentate sulfates bound to TiO 2 were formed as dominant intermediates at, and °C, respectively.

These sulfates reacted with affinitive. If the concentration of SO 3 entering the air heater is less than one half the concentration of ammonia, ammonium sulfate will be formed in lieu of ammonium bisulfate.

Since ammonium sulfate. The study determined: (1) the density, pH, and composition of saturated (NH4)2$04 solutions at 50, 65, and 80°C; (2) the effects on density, pH, and composition of addition to the solutions in (1); and (3) the solubility and the stripping rates of SO^ in saturated solutions of ammonium sulfate containing ammonium bisulfate at 65°C and.

Uses. The primary use of ammonium sulfate is as a fertilizer for alkaline the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth.

The main disadvantage to the use of ammonium sulfate is its low nitrogen content relative to ammonium nitrate, which elevates transportation costs.

The formation mechanism of ammonium bisulfate (ABS) in the process of SCR flue gas denitrification and some research progresses on ABS are reviewed in the paper. The main factors affecting the form. ammonium bisulfate formation is not limited to SCR systems. This can also occur with selective non-catalytic reduction technology (SNCR), which also involves injection of ammonia into the flue gas.

Ammonia slip can occur with SNCR processes and, here too, this can lead to the formation of ammonium sulfate compounds and air preheater fouling. Experimental Research on ABS Formation Characteristics in SCR Denitrification Process: MA Shuangchen 1, DENG Yue 1, WU Wenlong 2, ZHANG Linan 1, MA Jingxiang 1, ZHANG Xiaoni 2: 1.

College of Environmental Science and Engineering, North China Electric Power University, BaodingHebei Province, China. Ammonium sulfate is an inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia.A high-melting (decomposes above ℃) white solid which is very soluble in water ( g/ g water at 0℃; g/ g water at ℃), it is widely used as a fertilizer for alkaline soils.

It has a role as a fertilizer. Ammonium bisulfate breaks down when heated to release sulfur oxides. Physical.

Ammonium bisulfate is a white hygroscopic solid, soluble in water. Availability. Ammonium bisulfate is sold by chemical suppliers. Preparation.

Can be made via half-neutralization of sulfuric acid by ammonia. Hydrolysis of sulfamic acid will also give ammonium bisulfate. The air preheater, for example, though it has few moving parts, is vital to maintaining efficient boiler performance.

Formation and Deposition of Ammonium Bisulfate. 2 SO 4 (ammonium. ammonium sulfate has some characteristics, which make it unsuitable as a fire retardant for cellulose insulation.

Reference (2) points out that ammonium sulfate is a “powerful oxidizer.” Reference (3) states “ammonium sulfate begins to decompose at °C and yields ammonium bisulfate, NH4HSO4.”. Ammonium bisulfate, also known as ammonium hydrogen sulfate, is a white, crystalline solid with the formula (NH 4)HSO 4.

It is the product of the half-neutralization of sulfuric acid by ammonia. Ammonium bisulfate Names IUPAC name. Ammonium hydrogen sulfate. Its ingredients are water, Ammonium C Pareth Sulfate, sodium chloride, magnesium sulfate, dyes, sodium bisulfite, Pentasodium Pentatate, Lauramidopropylamine Oxide.

Ammonium Bisulfite (ABS) 50% Solution: SO Ammonium Bisulfite 50% (CAS ) is an ABS solution containing 50% ammonium bisulfite by weight. Ammonium Bisulfite is used in a variety of application including dechlorination, oxygen scavenging and heavy metal reduction.

Request a Quote Ammonium Bisulfite (ABS) 68% Solution: SO Ammonium Bisulfite, also known as ammonium hydrogen sulfate, is a white, crystalline solid when it is completely pure, with formula (NH4)HSO4.

Pure ammonium bisulfite is a white crystalline solid. Commercially, aqueous liquid form is common. Ammonium bisulfite’s reductive and sulfonating properties provide versatile applications.

It is used as an oxygen scavenger to eliminate the dissolved. Computational work now indicates that ammonium bisulfate can form from the pollutants ammonia and sulfur trioxide, mediated by water (J.

Chem. Soc.DOI: /jacs.5b). ammonium sulfite and ammonium sulfate. This neutralization serves to restore the pH to its desired value. NH 4 2 SO 3 1/ 2O 2 NH 4 2 SO 4 (9) Oxidation air injected into the absorber tank in reaction (9) oxidizes the remaining ammonium sulfite to ammonium sulfate.

NH SO 4 aqueous 4 2 + heat of evaporation NH 4 SO 4 solid (10). the formation of ammonium sulfate compounds and air preheater fouling. One possible solut ion is to modify the air preheaters to make them less susceptible to corrosion and plugging due to bisulfate formation.

Indeed, extensive air preheater modifications are currently underway at some U.S. power plants which are installing SCRs. The ASCR system is designed to minimize the rate of SO 2 to SO 3 conversion which is a precursor to ammonium sulfate/bisulfate formation in the air preheater. This low conversion rate allows for a broader unit operating range and fuel flexibility.

The combustion of ammonium bisulfate and ammonium sulfate solutions in hydrocarbon/air flames was studied under varied flame conditions. The objective of the study was to optimize the recovery of sulfur value from aqueous waste streams containing these salts. Combustion of ammonium sulfates yielded different sulfur species such as sulfur.

performance), Figure 1 shows that the majority of sulfur will form ammonium bisulfate, which is a sti cky liquid that adheres to the surface of flyash or to downstream equipment such as air preheaters. For subbituminous coal, ammonia does not have an affinity for the alkaline Class C ash.APPARATUS: Ferric ammonium sulfate, sodium bisulfate, sodium iodide solution, starched piece of cloth and test tube.

PROCEDURE: Place a measure of ferric ammonium sulfate and an equal amount of sodium bisulfate in a test tube half filled with water. Add to this a few drops of sodium iodide solution shaking the tube well.A method and apparatus for reducing the amount of unused ammonia (“ammonia slip”) in instances where ammonia is provided to SNCR and/or SCR processes for reducing NOx pollution in flue gas produced by a fossil fuel burning facility.

Such a facility incorporates a regenerative heat exchanger (i.e. an air preheater) for absorbing heat on the flue gas side, and releasing such absorbed heat to.

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