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pulverizer coal patent

pulverizer coal patent

Coal pulverizer United States Patent 5263655

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US5873156A Coal pulverizer and method of

The pulverizer feedpipe outlet is located in the classifier cone extension, but above the throat of the extension to prevent interference between the feedpipe and the flow of coal through the extension. In a preferred form an adjustable clearance cone is mounted for

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US Patent for Ultrafines coal pulverizer Patent (Patent

Justia Patents US Patent for Ultrafines coal pulverizer Patent (Patent # 5,597,127) Ultrafines coal pulverizer . Aug 4, 1995 . This invention relates to means for pulverizing coal or other minerals by causing them to impact against rotating elements which are specially contoured to maximize two objectives: 1) improved efficiency in

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US Patent for Control device of coal pulverizer Patent

There is provided a control device of a coal pulverizer which enables estimation of a coal output with a precision suited for a purpose. In a control device of a coal pulverizer which pulverizes coal by the coal pulverizer and estimates coal output by which the pulverized coal is output to a boiler, the control device includes a main operation circuit which calculates a command signal

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US5386619A Coal pulverizer and method of

US5386619A Coal pulverizer and method of improving flow therein Google Patents. An improved coal pulverizer classifying system in which the feedpipe and classifier cone are provided with...

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Coal pulverizer purifier classifier (Patent) OSTI.GOV

1994-1-4  The U.S. Department of Energy's Office of Scientific and Technical Information

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US Patent for Safety system for coal pulverizers Patent

A safety control system is disclosed for a coal pulverizer utilizing the measurements of net oxygen and carbon monoxide measurements of the pulverizer atmosphere. First levels of net oxygen and rate of carbon monoxide change are utilized in a control logic system to actuate alarms and automatic inerting of the pulverizer is accomplished utilizing a second level of net oxygen measurement and

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EP0132974A2 Safety systems for coal pulverizers

- Google Patents A safety control system for a coal pulverizer utilizes signals (20,22) representing net oxygen and carbon monoxide measurements of the pulverizer atmosphere. A signal (50)...

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US6021967A Sealing assembly for a coal pulverizer

US6021967A Sealing assembly for a coal pulverizer Google Patents. A packing for preventing leakage of air between a rotating yoke of a coal pulverizer and an annular seal surrounding an...

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US6725942B2 Pulverizer Google Patents

A pulverizer for reducing the clumpiness or aggregation of soil into clumps or clods and for screening materials, the pulverizer having a frame mounting a substantially cylindrically configured screening drum for rotation and a scoop for aiding the delivery of the material to be pulverized or screened to the screening drum. The pulverizer may be mounted as an attachment onto an appropriate

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US Patent for Ultrafines coal pulverizer Patent (Patent

Justia Patents US Patent for Ultrafines coal pulverizer Patent (Patent # 5,597,127) Ultrafines coal pulverizer . Aug 4, 1995 . This invention relates to means for pulverizing coal or other minerals by causing them to impact against rotating elements which are specially contoured to maximize two objectives: 1) improved efficiency in

get price

US Patent for Control device of coal pulverizer Patent

There is provided a control device of a coal pulverizer which enables estimation of a coal output with a precision suited for a purpose. In a control device of a coal pulverizer which pulverizes coal by the coal pulverizer and estimates coal output by which the pulverized coal is output to a boiler, the control device includes a main operation circuit which calculates a command signal

get price

Safety system for coal pulverizers (Patent) OSTI.GOV

OSTI.GOV Patent: Safety system for coal pulverizers. Safety system for coal pulverizers. Full Record; Other Related Research

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Coal pulverizer The Babcock Wilcox Company

United States Patent 5263655 One type of known coal pulverizing mill (pulverizer) is a slow speed, roll-and-race-type pulverizer that uses three large-diameter grinding rolls to crush the coal. Primary air enters the pulverizer through a radial inlet duct, moves into a low-velocity air plenum, and is then accelerated and oriented by a

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Safety system for coal pulverizers (Patent) OSTI.GOV

OSTI.GOV Patent: Safety system for coal pulverizers. Safety system for coal pulverizers. Full Record; Other Related Research

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US Patent for Safety system for coal pulverizers Patent

A safety control system is disclosed for a coal pulverizer utilizing the measurements of net oxygen and carbon monoxide measurements of the pulverizer atmosphere. First levels of net oxygen and rate of carbon monoxide change are utilized in a control logic system to actuate alarms and automatic inerting of the pulverizer is accomplished utilizing a second level of net oxygen measurement and

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US Patent for On-line pulverizer coordination

A method of controlling the operation of a pulverizer includes detecting the type of fuel being supplied to the pulverizer. At least one characteristic of the fuel is determined by a combination of measurements and calculations. One characteristic is moisture content which distinguishes one type of fuel, in particular, one type of coal, from another.

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Pulverizer control system The Babcock Wilcox

The coal flow from the pulverizer is transferred at 104 to a zero value from 106 if the swing valves are closed or the primary air flow is stopped, since these conditions immediately stop all coal flow from the pulverizer. FIG. 3A shows the logic of the pulverizer coal flow estimator 100.

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PULVERIZER MILL PROTECTION SYSTEM

What is claimed is: 1. A pulverizer mill protection system comprising: (a) at least one pulverizer mill comprising: (i) an inlet opening formed in an upper wall of the mill for receiving solid fuel therethrough, (ii) a classifying element positioned within the mill for classifying the solid fuel, wherein a classifier zone is defined by an area between the classifying element and the upper wall

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Coal Pulverizer Coal Mill Coal Ore Processing Plant

2012-4-6  coal pulverizer or coal pulverizer in order to dry the coal particles and lift the coal particles out of the coal mill or coal pulverizer or coal pulverizer and into the. boiler furnace of the coal power plant. When the coal particles is too heavy, it will drop down into and be grinded again by the coal pulverizer. coal pulverizer manufacturers.

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US Patent for Coal pulverizer Patent (Patent #

Justia Patents With Material Moving Or Discharge Means US Patent for Coal pulverizer Patent (Patent # 5,263,655) Coal pulverizer . Mar 10, 1993 The Babcock Wilcox Company. An improved annular passage arrangement for a pulverizer includes vertically extending inner and outer passage walls which define the annular passage divided by vanes

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Safety system for coal pulverizers (Patent) OSTI.GOV

OSTI.GOV Patent: Safety system for coal pulverizers. Safety system for coal pulverizers. Full Record; Other Related Research

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Coal pulverizer and method of improving flow therein

In U.S. patent application Ser. No. 08/135,726 filed Oct. 13, 1994, I disclosed an improvement upon the prior art coal pulverizer systems described above wherein the various air and coal flow paths throughout the pulverizer are optimized to prevent them from interfering with one another.

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US Patent for On-line pulverizer coordination

A method of controlling the operation of a pulverizer includes detecting the type of fuel being supplied to the pulverizer. At least one characteristic of the fuel is determined by a combination of measurements and calculations. One characteristic is moisture content which distinguishes one type of fuel, in particular, one type of coal, from another.

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Coal pulverizer inerting and fire extinguishing system

OSTI.GOV Patent: Coal pulverizer inerting and fire extinguishing system

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US Patent for Integrated high pressure drop rotating

A rotatable throat for a coal pulverizer is improved by creating a high pressure drop in the air ports which surround the throat. The lower portions of the air port nozzles are made of vanes and relatively thin sides, and shaped to provide air entrance areas from five to six times the release points of the nozzles.

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PULVERIZER MILL PROTECTION SYSTEM

At the maximum flow rate, the system 10 can fully deluge the mill 12, flooding the bowl and underbowl and washing coal out of the pulverizer. The coal dust can be carried away by the pyrites removal system. The system 10 can have a maximum spray density of greater than 2.5 gpm/ft 2 so that a fire can be quickly suppressed.

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US Patent for Pulverizer rejects disposal Patent (Patent

An improved pulverizer rejects disposal system having an air separator disposed in the sluice pipeline to remove any air entrained in the pulverizer rejects/water slurry prior to injection into the bottom ash hopper of a pulverized coal-fired boiler.

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Pulverizer throat assembly PROVOST; ROBERT S.

1995-1-27  Referring now to FIG. 1, the entire figure is an elevational view of a coal pulverizer 10, with parts broken away. Raw coal is fed into the top of the pulverizer through raw-coal pipe 11 and descends in known manner to and upon trough-shaped grinding ring 12 which forms a revolving circular trough in which revolve grinding wheels 13.

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Williams Crusher Pulverizer Company, Inc. > Welcome

Williams has been a leader in the crushing and pulverizing industry since 1871. With over 500 patents and trademarks to its credit, Williams Patent Crusher Pulverizer Company continues to engineer new and innovative designs for crushing machines that meet the needs of clients worldwide and provide solutions for them every day.

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