1
Jitendra G Patel, William A Sandstrom, Paul B Tarman: Process for the production of fuel gas from coal. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, February 16, 1982: US04315758 (63 worldwide citation)

An improved apparatus and process for the conversion of hydrocarbonaceous materials, such as coal, to more valuable gaseous products in a fluidized bed gasification reaction and efficient withdrawal of agglomerated ash from the fluidized bed is disclosed. The improvements are obtained by introducing ...


2
Jitendra G Patel, Frank C Schora, John W Loeding: Coal pretreatment and gasification process. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, November 8, 1977: US04057402 (43 worldwide citation)

A process for converting a finely divided carbonaceous material, particularly coal, to a fuel gas. A finely divided or pulverized carbonaceous feed material, such as coal, is pretreated at a temperature of about 700.degree. - 800.degree. F in order to destroy the caking properties of a caking coal f ...


3
Mark J Khinkis, Jitendra G Patel, William A Sandstrom: Two stage combustion. Institute of Gas Technology, Thomas W Speckman, August 8, 1989: US04854249 (33 worldwide citation)

A process for combusting sulfur and nitrogen containing carbonaceous materials in a two stage combustion process wherein sulfur and nitrogen containing carbonaceous materials and sulfur fixation agent particulates are introduced into a first combustion stage single fluidized bed having a density/siz ...


4
Pettai K Shankar, Jitendra G Patel, Beamon M Johnson: Process for starting-up an ethylene oxide reactor. Shell Oil Company, October 13, 1992: US05155242 (33 worldwide citation)

This invention relates to a process for starting up a fixed bed ethylene oxide reactor containing a supported silver catalyst promoted with one or more alkali metal promoter(s) which involves heating the reactor to slightly below normal operating conditions, passing an ethylene containing gas over t ...


5
Frank C Schora, John W Loeding, Jitendra G Patel: Valve for ash agglomeration device. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, May 17, 1977: US04023280 (25 worldwide citation)

A fluidized bed of material retained in a vessel receives a high velocity gas stream through a venturi orifice and passage to assist in the agglomeration of ash particles. The particles form a semi-fixed bed within the passage upstream from the venturi orifice. The particular dimensions of the semi- ...


6
Mark J Khinkis, Jitendra G Patel, Amirali G Rehmat: Process and apparatus for reducing pollutant emissions in flue gases. Institute of Gas Technology, Speckman & Pauley, April 21, 1992: US05105747 (20 worldwide citation)

A combustion process and apparatus for simultaneously reducing nitrogen oxides, sulfur oxides and hydrogen chloride in a high temperature furnace. A combustible material is introduced and combusted within the furnace, forming a primary combustion zone. Combustion air, sorbent and a first portion of ...


7
Charles W Matthews, Jitendra G Patel: Coal ash agglomeration device. Institute of Gas Technology, Molinare Allegretti Newitt & Witcoff, February 3, 1976: US03935825 (20 worldwide citation)

An improved apparatus for withdrawing agglomerated solids from a fluidizing chamber housing a main, fluidized bed of finely divided solids which comprises at least one withdrawal chamber having a width less than the fluidizing chamber and positioned below the fluidized bed. This withdrawal chamber h ...


8
Jitendra G Patel: Process for the recycling of coal fines from a fluidized bed coal gasification reactor. Institute of Gas Technology, Allegretti Newitt Witcoff & McAndrews, November 20, 1984: US04483692 (14 worldwide citation)

A process for recycling coal fines and ash particles in the reaction effluent from a fluidized bed gasification reactor for further gasification is disclosed. Surfaces of the reactor exit pipeline, cyclone inlet pipeline and first stage cyclone are maintained at a temperature lower than that of the ...


9
Amirali G Rehmat, Jitendra G Patel: Apparatus and process for controlling fluidized beds. Institute of Gas Technology, Thomas W Speckman, October 1, 1985: US04544375 (14 worldwide citation)

An apparatus and process for control and maintenance of fluidized beds under non-steady state conditions. An ash removal conduit is provided for removing solid particulates from a fluidized bed separate from an ash discharge conduit in the lower portion of the grate supporting such a bed. The appara ...


10
William A Sandstrom, Jitendra G Patel, John R Bush: Process for thermal and pneumatic treatment of granular solids. Institute of Gas Technology, Thomas W Speckman, February 11, 1986: US04569696 (10 worldwide citation)

Granular solids are thermally and pneumatically treated to remove organic and inorganic chemical additives which are bonded to the granular solids or in admixture with them, to provide a purified granular solid product which is suitable for reuse, for example foundry sand for use in high strength mo ...