Coal-Fired Power Generation

Put Precision solutions to work in your power generation operations to resolve problems and gain efficiencies.

We get your challenges.  When others are turning their backs on the coal industry, we’re doubling down to help our coal customers to keep operating efficiently, to meet growing and complex environmental regulations, and to generate power profitably. We have dozens of smarter solutions that can help you operate more reliably with lower costs.

Rotary valves should NEVER be the weakest link in your emission control and DSI environmental systems.  Precision understands the imperative of precise, reliable injection of lime, trona or activated carbon to keep these systems performing as specified. Our solutions offer longer life, efficient waste-free use of materials.

Move lignite without sticky build-up that plagues competing units.  No matter where you’re feeding lignite into your process, Precision has rotary valve and rotary feeders that feed consistently and reliably, minimizing the potential for clogs and maximizing process throughput.

Working with super abrasive pet coke? No problem!  Unique solutions and high-abrasive environments are our specialty.  Let us recommend a solution that lasts longer and requires less maintenance.

Coal-Fired Power Generation Applications

Pneumatic Conveying Rotary Valves

REQUIREMENTS

Metering and airlock function or solely airlock function. Inject pulverized coal, pet coke, or lime into a pneumatic transport line.

PRECISION SOLUTION

Severe Duty version of the PMV-8 to PMV-20 for most applications.

Ultra Duty version of the PMV-8 to PMV-20 for abrasive applications.

Transitions for slide-out/slide-in replacement of competitive valves

Pneumatic line injectors

KEY DIFFERENTIATORS

Tight tolerances minimize blow-by and maintains pneumatic system performance.

2X – 3X useful life over commodity, cast-iron valves is typical.

PRECISION PRODUCT

PMV Modular Rotary Valve
PMV Modular Rotary Valve

Barge Unloading System Rotary Feeder

REQUIREMENTS

Used at the discharge of a cyclone receiver in a vacuum unloading system for lime. Rotary feeder functions as an airlock discharging to a belt conveyor or pneumatic line.

PRECISION SOLUTION

Modified version of the PMR feeder with no knife

Rounded rotor pockets

Upgraded Tri-Braze barrels for wear resistance

Special sealing arrangement in endbells

KEY DIFFERENTIATORS

Designs for high capacity systems up to 250 TPH

Years of operation between rebuilds

PRECISION PRODUCT

PMRD Rotary Feeder
PMRD Rotary Feeder

Rotary Valves for Feeding Lignite

REQUIREMENTS

Applications where typical moisture content is > 10%.

Meter lignite into the boiler and minimize false air introduction into the boiler.

PRECISION SOLUTION

Dual-rotor design that mechanically “sweeps” the rounded pockets on the upper / product rotor to prevent material build-up.

KEY DIFFERENTIATORS

Handles high-moisture coal without costly operator intervention for clean-out.

Maintains consistent feed rate to optimize burn.

PRECISION PRODUCT

PMDS Self-Cleaning Rotary Valve cutaway 2
PMDS Self-Cleaning Rotary Valves

Pollution Control System Rotary Valves – ACI

REQUIREMENTS

Systems injecting activated carbon, BPAC, or other sorbents for treating flue gas stream for removal of mercury or other heavy metals.

PRECISION SOLUTION

Ultra duty version of the PMV-8 to PMV-12

Pneumatic line injectors

Nord inverter-duty drive motors

KEY DIFFERENTIATORS

Extra durability for the abrasiveness of activated carbon.

Tight tolerances minimize blow-by and maintain pneumatic system performance.

2X – 3X useful life over commodity, cast-iron valves is typical.

PRECISION PRODUCT

PMV Modular Rotary Valve
PMV Modular Rotary Valve

Pollution Control System Rotary Valves – DSI/FGD

REQUIREMENTS

Systems injecting lime, trona, fly ash, bottom ash, or other sorbents for treating flue gas discharge for SOx or NOx.

PRECISION SOLUTION

Severe-duty version of the PMV-8 to PMV-14

Pneumatic line injectors

Nord inverter-duty drive motors.

KEY DIFFERENTIATORS

Durability that handles lime or trona.

Tight tolerances minimize blow-by and maintains pneumatic system performance.

2X – 3X useful life over commodity, cast-iron valves is typical.

PRECISION PRODUCT

PMV Modular Rotary Valve
PMV Modular Rotary Valve

Let our applications specialists help you with your extreme-duty bulk material handling needs.