Balu Jyothi Sarma from 111 Avalon Gardens Dr, Nanuet, NY 10954, age 58

Us Patents

Fluid Cooled Coherent Jet Lance
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US Patent:

6334976, Jan 1, 2002
Filed:

Aug 3, 2000
Appl. No.:

09/631945
Inventors:

John Erling Anderson - Somers NY
William John Mahoney - Dobbs Ferry NY
Balu Sarma - Airmont NY
Dennis Robert Farrenkopf - Bethel CT
Assignee:

Praxair Technology, Inc. - Danbury CT
International Classification:

C21C 532
US Classification:

266225, 266268
Abstract:

A lance which may be used to generate a longer coherent gas jet having inflowing and outflowing coolant fluid passages which are in flow communication and which straddle the flame envelope fluid passages, all of which are coaxial with the main passageway.

Method For Reducing Iron Losses In An Iron Smelting Process
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US Patent:

58853227, Mar 23, 1999
Filed:

Mar 21, 1997
Appl. No.:

8/823012
Inventors:

Balu Sarma - Airmont NY
Kenneth B. Downing - Greenville SC
Assignee:

Steel Technology Corporation - Washington DC
International Classification:

C21B 1100
US Classification:

75381
Abstract:

A process of smelting iron that comprises the steps of: a) introducing a source of iron oxide, oxygen, nitrogen, and a source of carbonaceous fuel to a smelting reactor, at least some of said oxygen being continuously introduced through an overhead lance; b) maintaining conditions in said reactor to cause (i) at least some of the iron oxide to be chemically reduced, (ii) a bath of molten iron to be created and stirred in the bottom of the reactor, surmounted by a layer of slag, and (iii) carbon monoxide gas to rise through the slag; c) causing at least some of said carbon monoxide to react in the reactor with the incoming oxygen, thereby generating heat for reactions taking place in the reactor; and d) releasing from the reactor an offgas effluent, is run in a way that keeps iron losses in the offgas relatively low. After start-up of the process is complete, steps (a) and (b) are controlled so as to: e) keep the temperature of the molten iron at or below about 1550. degree. C. and f) keep the slag weight at or above about 0.

Apparatus For Production Of Direct Reduced Iron With Reduced Fuel Consumption And Emission Of Carbon Monoxide
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US Patent:

61173878, Sep 12, 2000
Filed:

Jun 8, 1999
Appl. No.:

9/327568
Inventors:

Balu Sarma - Airmont NY
Maynard Guotsuen Ding - Yorktown Heights NY
Assignee:

Praxair Technology, Inc. - Danbury CT
International Classification:

C21B 722
US Classification:

266145
Abstract:

A system for producing direct reduced iron wherein iron oxide material and carbonaceous material is passed successively through an oxidizing zone and a reducing zone of a furnace, each zone fired by oxy-fuel combustion, enabling a reduction in the amount of fuel needed to process the material while generating sufficient carbon monoxide to effect the reduction and ensuring that little or no carbon monoxide is emitted from the furnace.

Method For Changing The Length Of A Coherent Jet
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US Patent:

61427640, Nov 7, 2000
Filed:

Sep 2, 1999
Appl. No.:

9/388489
Inventors:

John Erling Anderson - Somers NY
Balu Sarma - Airmont NY
William John Mahoney - Stony Point NY
Assignee:

Praxair Technology, Inc. - Danbury CT
International Classification:

F23C 500
US Classification:

431 8
Abstract:

A method for changing the length of a coherent jet by establishing a coherent jet using a flame envelope generated using gaseous fuel and changing the flowrate of the gaseous fuel, preferably using inert gas for make up to maintain a constant total flowrate of fuel and inert gas.

Method For Stable Operation Of A Smelter Reactor
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US Patent:

61713643, Jan 9, 2001
Filed:

Mar 21, 1997
Appl. No.:

8/821445
Inventors:

Balu Sarma - Airmont NY
Kenneth B. Downing - Greenville SC
Assignee:

Steel Technology Corporation - Washington DC
International Classification:

C21B 1500
US Classification:

75382
Abstract:

A process of producing molten iron involves: a) introducing iron oxide, flux, oxygen, nitrogen, carbon, and hydrogen to a smelter reactor; b) maintaining conditions to cause (i) the iron oxide to be reduced, (ii) molten iron to be created and stirred in the bottom of the reactor, surmounted by a layer of foaming, FeO-containing slag, and (iii) carbon monoxide gas to rise through the slag; c) causing at least some of the carbon monoxide to react with the oxygen; d) releasing an offgas containing CO, CO. sub. 2, H. sub. 2, and H. sub. 2 O; and e) removing at least some of the molten iron and slag from the reactor. Good process stability is achieved by: f) repeatedly measuring, during the process, the conditions of the slag height, the temperature of the molten iron, the levels of CO, CO. sub. 2, H. sub. 2, and H. sub. 2 O in the offgas, the carbon level in the molten iron, and the FeO level in the slag, and g) subsequently adjusting one or more process variables (e. g. , a reactant feed rate, the iron bath stirring rate, or the height of the oxygen lance above the slag) so as to help keep one or more of those process conditions within a predetermined range.

Production Of Direct Reduced Iron With Reduced Fuel Consumption And Emission Of Carbon Monoxide
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US Patent:

59517409, Sep 14, 1999
Filed:

Jun 16, 1997
Appl. No.:

8/876752
Inventors:

Balu Sarma - Airmont NY
Maynard Guotsuen Ding - Yorktown Heights NY
Assignee:

Praxair Technology, Inc. - Danbury CT
International Classification:

C21B 1308
US Classification:

75484
Abstract:

A system for producing direct reduced iron wherein iron oxide material and carbonaceous material is passed successively through an oxidizing zone and a reducing zone of a furnace, each zone fired by oxy-fuel combustion, enabling a reduction in the amount of fuel needed to process the material while generating sufficient carbon monoxide to effect the reduction and ensuring that little or no carbon monoxide is emitted from the furnace.

Method For Reducing Sulfuric Content In The Offgas Of An Iron Smelting Process
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US Patent:

59806060, Nov 9, 1999
Filed:

Mar 21, 1997
Appl. No.:

8/828268
Inventors:

Balu Sarma - Airmont NY
Kenneth B. Downing - Greenville SC
Joseph E. McGreal - Pittsburgh PA
Assignee:

Steel Technology Corporation - Washington DC
International Classification:

C21B 1100
US Classification:

75502
Abstract:

In order to lower the sulfuric content of the offgas from a smelter reactor in which iron oxide is reduced to molten iron, in the presence of sulfur contaminants, a sufficient amount of a source of zinc is included in the charge to the reactor that the combined weight of the zinc source and the iron oxide source contains at least about 0. 6% Zn (calculated as elemental zinc), on a dry weight basis. The temperature of the offgas is maintained at or above approximately 700. degree. C. Vaporized zinc, present in the offgas, binds with sulfur in the offgas to precipitate solid ZnS. After removal of the ZnS, the offgas may have a sulfuric content below 50 ppm by volume of H. sub. 2 S equivalent. Suitable sources of zinc include blast furnace dust, electric arc dust, basic oxygen furnace dust, zinc calcine, and zinc sinter.

System For Providing Proximate Turbulent And Coherent Gas Jets
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US Patent:

62415107, Jun 5, 2001
Filed:

Feb 2, 2000
Appl. No.:

9/495862
Inventors:

John Erling Anderson - Somers NY
Balu Sarma - Airmont NY
Ronald Joseph Selines - North Salem NY
Pravin Chandra Mathur - Bronx NY
Assignee:

Praxair Technology, Inc. - Danbury CT
International Classification:

F23C 500
US Classification:

431 8
Abstract:

A system for providing gases into an injection volume in one or more coherent gas jets proximate to one or more turbulent gas jets wherein a coherent gas jet is formed in a forming volume with a flame envelope prior to passage into the injection volume into which the turbulent gas jets are directly passed.