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Saturday, November 21, 2020 | History

3 edition of Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets found in the catalog.

Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets

L. A. Haas

Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets

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Published by U.S. Dept. of Interior, Bureau of Mines in Washington, D.C .
Written in English

    Subjects:
  • Iron -- Metallurgy.,
  • Oxidation.,
  • Taconite.

  • Edition Notes

    Other titlesUse of oxygen enriched gas for the oxidation of acid and fluxed taconite pellets.
    Statementby Larry A. Haas, John C. Nigro, and Robert C. Moe.
    SeriesReport of investigations -- 9473., Report of investigations (United States. Bureau of Mines) -- 9473.
    ContributionsNigro, John C., Moe, Robert C., United States. Bureau of Mines.
    The Physical Object
    FormatMicroform
    Paginationii, 22 p.
    Number of Pages22
    ID Numbers
    Open LibraryOL15388863M


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Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets by L. A. Haas Download PDF EPUB FB2

Additional Physical Format: Online version: Haas, L.A. (Larry A.). Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets. Get this from a library. Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets.

[L A Haas; John C Nigro; Robert C Moe; United States. Bureau of Mines.]. Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets by L. Haas,U.S. Dept. of Interior, Bureau of Mines edition, in EnglishPages: Centers for Disease Control and Prevention. CDC twenty four seven.

Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets. The rate of magnetite oxidation increased directly with the gas oxygen content during the preheat period at deg C and above.

With 30 pct (or more) O2 and a preheat rate of deg C/min. Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets. of domestic acid and fluxed magnetite pellets by modifying the oxygen content during the preheat and induration periods of the firing operation.

of Mines is investigating ways of enhancing the high- temperature softening-melting (htsm) properties of Cited by: 2. L.A. Haas, J.C. Nigro and R.C. Moe: Use of Oxygen-Enriched Gas for the Oxidation of Acid and Fluxed Taconite Pellets.

Bureau of Mines Report of Investigations US Department of the Interior, Cited by: 9. "The U.S. Bureau of Mines, in cooperation with Cleveland-Cliffs, Inc. (Hibbing, Minnesota), investigated ways of enhancing the quality (compressive strength, after-tumble and reducibility) of domestic acid and fluxed magnetite pellets by modifying th Cited by: 9.

[1] L.A. Haas, J.C. Nigro and R.C. Moe: Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets. Bureau of Mines Report of Investigations Use of oxygen-enriched gas for the oxidation of acid and fluxed taconite pellets [microform] / by Larry Pioneering with taconite / by E.

Davis; Influence of chelating reagents on leaching of copper ore [microform] / by Larry A. Haas and Terry L. Centers for Disease Control and Prevention.

CDC twenty four seven. Use Of Oxygen-Enriched Gas For The Oxidation Of Acid And Fluxed Taconite Pellets. Other ID. RI Oct SPONCOM - An Expert System to Predict Spontaneous Combustion Potential of a Coal Mining Operation Direct-Reading Combustible Gas Meters.

NIOSH Number. International Journal of ISSI, Vol.9 (), No.2, pp. Effect of Using Oxygen-Enriched Gas during Induration Process of Iron Ore Pellets Containing Solid Fuel. The use of pure oxygen instead of air in chemical reactions must be thoroughly evaluated. Table 2 sum-marizes several general guidelines that indicate where the use of oxygen can usually be economically justified (6).

Energy efficiency From an energy efficiency perspective, the nitrogen and argon in combustion air are detrimental, because theyFile Size: 1MB. Oxygen enriched combustion is one of the attractive combustion technologies to control pollution and improve combustion in diesel engines.

An experimental test was conducted on a single cylinder direct injection diesel engine to study the impact of oxygen enrichment on pollution and performance parameters by increasing the oxygen concentration of intake air from 21 to 27% Cited by: Energy Tips – Process Heating Process Heating Tip Sheet #3 • September Industrial Technologies Program Oxygen-Enriched Combustion When a fuel is burned, oxygen in the combustion air chemically combines with the hydrogen and carbon in the fuel to form water and carbon dioxide, releasing heat in the Size: KB.

Enriching or replacing process air with oxygen during combustion reduces the amount of nitrogen in the process. This reduces the flue gas volume, improves thermal efficiency, increases throughput rates, and reduces energy requirements.

Our industry specialists can help you determine the optimal supply method to meet your needs. The use of oxygen-enriched air, instead of ambient air, can significantly improve the energy efficiency of combustion processes and reduce the cost of CO2 capture from flue gases throughout manufacturing industries.

This study examines the overall energy savings and economic benefits that can be obtained using oxygen-enriched combustion based on novel.

Historically, the primary use of oxy-fuel combustion has been in welding and cutting of metals, especially steel, since oxy-fuel allows for higher flame temperatures than can be achieved with an air-fuel flame.

There is currently research being done in firing fossil-fueled power plants with an oxygen-enriched gas mix instead of air. Oxidation process of gas mixture of hydrogen sulfide (H 2 S) and methane (CH 4) in a non-premixed flame and formation of COS and CS 2 has been studied under oxygen deficient condition.

Premixed fuel consisting of H 2 S and CH 4 with constant molar ratios () was injected and air was varied from the stoichiometric to the fuel rich condition (equivalence ratio, Cited by: 2. Possibility of Combustion Furnace Operation with Oxygen-Enriched Gas from Nitrogen Generator Xinyu Ming, Dan S.

Borgnakke, Marco A. Campos, Pawel Olszewski, Arvind Atreya, Claus Borgnakke University of Michigan, Mechanical Engineering ABSTRACT Nitrogen gas is used in a wide variety of industrial processes. Many facilities generateFile Size: KB.

Home» Oxygen-Enriched Combustion. This tip sheet discusses how an increase in oxygen in combustion air can reduce the energy loss in the exhaust gases and increase process heating system efficiency.

PROCESS HEATING TIP SHEET #3. Oxygen-Enriched Combustion (September ). industrial processes. Here are the methods of oxygen-enriched combustion and oxy-fuel combustion. Oxygen-Enriched Combustion Oxygen-enriched combustion is the combustion art that oxygen enrichment by the addition of high-purity oxygen to the air.

Generally, the concentration of oxygen in the oxygen-enriched combustion is about 30%.File Size: KB. High-efficiency combustion of natural gas with 21–30% oxygen-enriched air Kuo-Kuang Wua, Yu-Cheng Changb, Chiun-Hsun Chenb, Young-Da Chenb,* a Energy and Environment Research Laboratories, Industrial Technology Research Institute, Bldg.

64, Sec. 4, Chung Hsing Rd., Chutung, HsinchuTaiwan, ROC bDepartment of Mechanical Engineering, National. When a furnace has been converted to be oxygen enriched, throughput can be increased for the same fuel input because of the higher flame temperature, the increased heat transfer to the load, and a reduced flue gas Air enrichment can increase both the flame temperature and the thermal efficiency of the furnace.

File Size: KB. of oxygen production in cryogenic plants, but the use of membranes technology to obtain air enriched with % oxygen may offset the costs of oxygen implementation with the fuel saving obtained.

Poola et al.,carried out studies of OEC in internal combustion engines for locomotives, and reported a. InEqs.(4)and(5)n1f,n1p,n2f andn2p representthetime-dependent mole numbersdmade dimensionless with the initial amount nTdof the feed and permeate streams of O2 (component 1) and N2 (component 2), respectively.

Furthermore, p1 and p0 are the total gas pressures on both sides of the membranes, and X1f and X1p are the time-dependent molar concentrations of. Waghmare et al., International Journal of Advanced Engineering Technology E-ISSN Int J Adv Engg Tech/Vol. V/Issue II/April-June,/ Review Article POWER ENHANCEMENT USING OXYGEN ENRICHED AIR: A CRITICAL REVIEW Shamal Indulkar1, Sayali Dongare 2, Sachin N Waghmare 3* Address for Correspondence.

A separation process, similar to the reverse osmosis membrane process for the desalination of water, can be used for the separation and enrichment of multi-component gas streams. The development of new processing methods and modular packing systems together with advanced commercialization of desalination systems now makes similar processes for gas separation Author: Jack Fischer, Lowell J.

Burnett. consumption and nitrogen oxides emissions reductions and productivity increase W. Blasiak1, W. Yang*1, K. Narayanan1 and J. von Sche´ele2 In order to achieve very low emission of nitrogen oxides, a flameless combustion process that uses oxygen, the so called flameless oxyfuel combustion, has been developed.

This new. The principal source of NOx is the oxidation of atmospheric nitrogen. The NOx level also depends on the burned gas fraction of the in-cylinder unburned gas mixture.

and spark timing. The burned gas fraction depends on the amount of diluent including recycled exhaust gas (EGR) used for NOx emission control, as well as the residual gas fraction. 1 MWt test conditions Parameter Full load Partial load Air case Oxy case Air case Oxy case Coal flow rate kg/hr 72 72 Primary velocity m/s 20 23 17 21 Secondary velocity m/s 35 21 18 12 Secondary swirl number - Primary momentum fluxPrimary momentum flux kg/s.m 22/s 35 54 20 36 Secondary momentum flux kg/s.m 2/s.

The use of pellets is increasingly becoming a significant mode of operation in the iron and steel industry, as shown in Table Pellets are made by rolling fine iron ore mixed with a binder to form "green" pellets (about 3/8 inch to 1 inch in diameter) which are then heated.

Bentonite, the usual clay binder, is the principal additive. end-use markets. With the growth in demand for high quality products, stringent gas separation with high flux, asymmetric hollow fiber membranes was developed Nitrogen- and oxygen-enriched air production MEA-based CO2.

Today, however, as a result of technological improvements (PDF MB) in several areas, oxygen-enriched combustion and oxy-fuel firing are again being viewed as sound ways to increase productivity while reducing energy use and environmental emissions.

Download Adobe Reader. New Life for Oxygen-Enhanced TechnologyAuthor: Noria Corporation. Contents • xi Phosphorus Content of Hot Metal Sulphur Control Concluding Remarks References Overall Input and Output Considerations Gas Flow through the Furnace Softening–Melting Characteristics Blast Furnace Slag and Its Utilisation Use of Pellets in Burden This project involves studying the characteristics of oxygen-enriched combustion.

Supervisor(s) Professor Assaad Masri. Research Location. Aerospace, Mechanical and Mechatronic Engineering. Program Type. Masters/PHD. Synopsis. There is strong interest in this mode of combustion where the fuel is enriched with oxygen rather than air.

Figure Oxygen enriched combustion with internal combustion engine experimental setup. 72 Figure Oxygen enriched combustion with water heating boiler experimental setup. 74 Figure Temperature of the exhaust gas as a function of engine speed for 21% O2 concentration and (, 5, 10, 15, and 20)% Biodiesel concentration.

A rotary furnace consists of a refractory-lined steel drum mounted on rollers with a variable-speed motor to rotate the drum. An oxygen-enriched natural gas or fuel oil jet at one end of the furnace heats the charge material and the refractory lining of the drum.

The connection to the flue is located at the same end as the jet. Oxy-fuelの意味や使い方 酸素燃焼酸素燃焼(さんそねんしょう)とは、バーナーやボイラーなどの支燃性ガスに、酸素、あるいは酸素濃度を高めたガスを用いた燃焼のことである。 - 約万語ある英和辞典・和英辞典。発音・イディオムも分かる英語辞書。.