A full-scale sulfide precipitation process (Na2S as sulfide source) with a capacity of 1.0 x 106 gallons per day is operating at Boliden Metall Corporation of Sweden to treat smelter (Cu, Pb, Zn smelting) wastewaters. One copper smelter in Japan has a sulfide precipitation process to recover heavy metals as sulfides.
Iron Sulfide Control. Iron sulfide presents many challenges in the oil and gas industry. Its presence indicates a problem in the production stream and will cause problems across all aspects of production and transmission. Iron sulfide causes corrosion by bonding to metal surfaces and causing an electrochemical reaction that degrades metal.
Iron it the primary content for steel piping and processing equipment. Iron may also be present within nascent formation waters. When all three are present, iron sulfide, and hence black powder, may form. Removing H 2 S and/or water reduces the likelihood for …
A Review of Sulfide Smelting Process Gas Handling Systems Paykan Safe Gas Cleaning Technologies 4950 North O'Connor Road Suite 250 Irving, Texas, U.S.A. 75062 1.0 SMELTER PROCESS GAS CHARACTERISTICS Off-gas handling systems for sulfide smelting processes are a major source of downtime and scheduled maintenance activities.
Fig. 11.1 summarizes the available technologies for the ex situ (A) and in situ (B) removal of contaminants from biogas, especially H 2 S. In the ex situ processes, the biogas is upgraded in a separate unit process involving physical, chemical, or biological systems, while in situ biological H 2 S removal uses naturally occurring microorganisms in the anaerobic digesters.
Iron sulfide control programs from Baker Hughes minimize the problem and control operational cost. We offer a complete set of solutions to prevent, control, or remove FeS in your production and injection equipment.
JONELL SYSTEM'S FILTRATION TECHNOLOGY PROTECTS SOPHISTICATED DOWNSTREAM EQUIPMENT DURING VITAL STAGES …
Impressive sulfur and iron removal – The Matrixx Infusion injects a measured dosage of hydrogen peroxide into water. This oxidizes an incredible 30 PPM of hydrogen sulfide, 20 PPM of iron, and 1 PPM of manganese. The average sulfur level in well water is 1-5 PPM, so you're covered against even the worst contamination with this system.
The dynamic range of Zyme-Flow® Decon Technology products are recognized as the global standard for complete decontamination in refining and petrochemical applications. In a single step, pyrophoric iron sulfide, hydrogen sulfide, LEL's, and benzene are eliminated. The chemistry is wastewater friendly, with a near neutral pH and compatible with ...
Roasting: In this process the sulfide ores are heated to a high temperature in presence of air. Smelting: In this process heat is applied to the ore in order to extract the base metals like silver (Ag), iron (Fe), copper (Cu) etc. Often before roasting, the ore (generally sulfide ores) is partially purified using another important
As this breakdown happens concurrently with metal sulfide formation, larger nanostructures of zinc, cadmium and iron sulfide are obtained. The final morphologies are heavily predicated by the underlying crystal structure. A selection of the metal sulfide nanoparticles and nanostructures derived from these methods are shown in figure 6 . Figure 6.
Pyrophoric material such as iron sulfide is frequently found in refinery equipment. When the equipment is opened to the atmosphere for maintenance, an exothermic reaction may take place that can cause catastrophic damage. A process according to the invention for treating pyrophoric material uses the controlled introduction of an oxygen-containing gas to safely oxidize the …
Sulfuric acid manufacturing is a long process and catalysts, heating, high pressures, Le chatelier's principle are applied during the complete process. Step 1. Burning sulfur or sulfide compound. Sulfur or sulfide compound is burnt in air to produce sulfur dioxide gas (SO 2). For sulfide compounds, ZnS, PbS, FeS can be used. Step 2
This process is usually installed in a two-tower configuration, as shown in Fig. 5.The slightly sour gas is flowed through both towers in series. The H 2 S content is monitored in the gas between the two towers. When the concentration of H 2 S starts to increase in this gas, it is an indication that the SulfaTreat chemical in the first tower is consumed.
We provide a distinctive quality, and our product is neatly sided, translucent yellow, and well-shaped. The firm uses 60% activity and fewer than 10 parts per million of iron to make sodium sulphide. It provides several logistical choices and packs the goods in safe, universally-compliant packaging. What is sodium sulfide production process?
Part 3A: Iron Sponge Basics November 2017 One of the oldest technologies for the removal of hydrogen sulfide (H 2 S) from gas is the use of "Iron Sponge". A chemical-physical process, originally developed to remove H 2 S from natural and coal gas streams, iron sponge has been in use for over 140 years and more recently to remove H 2
In mining industries, biomining (comprising biooxidation and bioleaching) is implemented to extract metals from specific ores and waste streams with less environmental effect and expense. Usually, micron-sized gold particles are held in a crystal lattice of iron sulfide minerals and expensively extracted using common approaches. Researchers and industries …
Reaction 3 Iron oxide reacts with organic sulphur or hydrogen sulphide (H2S): Soluble organic iron species such as iron carboxylates and iron naphthenates are likely to decompose at higher temperatures, reacting with organic sulphur or H2S to form FeS deposits on process equipment surfaces. Their decomposition temperature is >300°C.
It accounts for approximately 70% of the total known reserves, and therefore is an essential source of copper (Ahn, Wu, and Lee 2022;Taskinen et al. 2019;Tian and Liu 2022;Watling 2013).
The precipitation of the iron sulfide scale on the well completion tools or inside surface flow lines restricts the flow of the produced fluids and might affect the integrity of the pipelines or ...
1. Map the Process Flow with T & P 2. Develop a monitoring and system survey plan 3. Walk the pipe & process flow with Operations 4. Compile all historical data and failure info 5. Methodically collect a baseline of statistically valid data. 6. Develop a root cause solution with operations 7. Implement a trial of one solution at a time 8.
Hydrogen sulfide (H2S) is a toxic, corrosive gas that's encountered in the oil and gas industry. H2S is soluble in both water and hydrocarbon and thus an optimal scavenger needs to scavenge H2S ...
expertise in iron precipitation, nickel and cobalt producers benefit from environmentally acceptable iron residue storage or further use. Manganese, an impurity often associated with these raw materials, can be precipitated as manganese oxide either together with iron or separately. From iron and manganese removal, the pregnant leach
process flow diagram for a typical sulfur handling system is presented to review the major unit operations. Material balances have been developed for cases both with and without sulfur …
The smelter is basically a large furnace which melts the concentrate and drives off the sulfide to leave molten copper metal this is still contains impurities and it needs to be refined further to make it a salable product. Returning to the overall process; that is the process for the sulfide ores and the oxide ore as I said are treated ...
Mineral concentrates can pass through several stages of cleaning before a final concentrate is obtained. The equipment employed in this stage is the same equipment used in the rougher stage. Other equipment such as a shaking table is employed in the cleaning stage and let to obtain clean gold concentrates.
Sulfide precipitation method has been widely applied in heavy metal–polluted wastewater treatment, due to the low solubility of most metal sulfide precipitates. Nevertheless, the relevant hydrodynamics studies on the metal sulfide precipitation process are rarely found in the literature. In this study, three continuous-flow sulfide precipitation reactors (CFSPRs) were …
To remove hydrogen sulfide (H2S) and mercaptans from natural gas streams at low- or highpressure conditions at or near the well head. Iron sponge (iron oxidized onto wood shavings) uses a simple packed tower (3) on …
Process flow diagram of a typical refinery. 2.1. Storage tanks. ... iron sulfide compound, which can act as an ignition source is formed [9]. Furthermore, allowing water to accumulate at the bottom of storage tanks will cause corrosion. ... Failures in equipment can have serious consequences because high-temperature processes typically involve ...
mation of pyrophoric iron sulphides (FeS) on carbon steel surfaces. Iron sulphide forms in significant amounts under the reducing (without oxygen) conditions found in unvented tanks or …
The typical Unisulf process flow diagram is reported in Fig. 6, where all the characteristic H 2 S liquid redox process sections can be distinguished: the absorber, to wash the H 2 S containing feed gas; the …
Sulfur processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design.
The concentration of H 2 S in biogas varies from a few hundred to ten thousand ppm depending on the amount of bioavailable sulfur compounds in the feedstock and the outcome of the competition among sulfate-reducing bacteria, acetogens and methanogens for the organic substrates (Stams et al. 2005).A presence of a high concentration of H 2 S causes corrosion …
Process flow schemes. The generalized process setup for sweetening operations combines an absorption unit and a regeneration unit operation, as shown in FIG. 2. The raw natural gas is contacted by the aqueous solvent (lean solvent) in the absorption tower, where it picks up the CO₂ and H₂S contained in the gas.
Hydrogen sulphide must be eliminated because it is toxic to human health, poisonous to process catalysts, and corrosive to machinery. Desulfurization, or the removal of hydrogen sulphide, is an ...
The paper is about the froth flotation process and its application. It is a metallurgical process for the extraction of metals in a pure state from their ores: especially for sulfide ores.
maintain high service rates. Backwash cycle should be complete twice daily. Features & Benefits • Superior high efficiency media for filtration and removal capabilities • No oxidizing chemicals …
The "Field Guide for Managing Iron Sulfide (Black Powder) within Pipelines or Processing Equipment" offers practical guidance for corrosion control and operations personnel in managing black powder within their pipeline systems or processing equipment. It starts with a discussion of what is black powder and identifies health and safety considerations associated with H2S and …