Power Industry PAC Case Study

Creating Immediate, “on-demand” PAC slurry capacity with automation and bulk truck PAC delivery.

Opportunity

Many of our power plant customers with Powdered Activated Carbon (PAC) storage and slurry processes seek to convert their PAC handling from inefficient bulk bags of PAC to receiving PAC directly from bulk trucks.

Industry: Power Generation

Our Approach

Our process includes a PAC silo with 3500 ft3 capacity and a Vacucam® In-Line Slurry Process capable of slurrying PAC with water on demand. In addition, the system supplies the slurry directly to the scrubber.

For example, the modular skidded Vacucam® In-Line slurry system can be installed inside the skirt of the silo enclosure.

This allows the single pass slurry process to receive 100 gpm of high pressure water to the Vacucam® Ejector Mixer in order to deliver slurry with up to 10% PAC sequentially to multiple scrubbers.

The PAC is delivered to the silo from bulk trucks and then fed from the silo through a fluidizing cone and rotary valve into a weighed batch hopper where the powder is conditioned with our patented Air-Cone® Hopper using compressed air.

Our patented Vacucam® Ejector Mixer generates as a powerful vacuum which conveys conditioned PAC from the weigh hopper through a convey hose and mixes it instantaneously with the water in a single pass process. The slurry is discharged into an inline slurry tank from where it is immediately pumped to the scrubber.

The Results

We always deliver Our Performance Guarantee:

  • Eliminating handling bulk bags and converted supply to bulk truck
  • Allowing customer to scale up or down the amount of PAC to scrubbers
  • Eliminating plugging issues experienced with previous powder delivery system
  • Improving sanitation (cleanliness) of PAC powder room since the PAC is better contained within system.
  • Improving wetting & overall slurry quality
  • Lowering operating cost: Labor / Logistics / Maintenance
  • Providing total system automation: Instant start and stop of slurry process as well as Immediate “on-demand” slurry capacity as required.

See how the patented Semi-Bulk Systems solutions can power your PAC slurry creation by contacting us to evaluate your next project.

Semi-Bulk has been installed around the world.

Industries Served

Power Plant Mercury Recovery Case Study

Opportunity

Some of our power generation customers have elected to install a state of the art Powdered Activated Carbon (PAC) storage and slurry process. The main objective of the project is most often to convert from handling bulk bags of PAC to receiving PAC in bulk trucks.

Our process includes a PAC silo with 3500 ft3 capacity and a Vacucam® In-Line Slurry Process capable of slurrying PAC with water on demand and supplying the slurry directly to the scrubber.

Location: Missouri
Industry: Power Generation

Our Approach

The modular skidded Vacucam® In-Line slurry system is installed inside the skirt of the silo enclosure.  The single pass slurry process receives 100 gpm of high pressure water to the Vacucam® Ejector Mixer and delivers slurry with up to 10% PAC sequentially to multiple scrubbers. PAC is delivered to the silo from bulk trucks.

The PAC is fed from the silo through a fluidizing cone and rotary valve into a weighed batch hopper where the powder is conditioned with an Air-Cone® Hopper using compressed air.

The Vacucam® Ejector Mixer generates a powerful vacuum which conveys conditioned PAC from the weigh hopper through a convey hose and mixes it instantaneously with the water in a single pass process.  The slurry is discharged into an inline slurry tank from where it is immediately pumped to the scrubber.

The Results

Here are some of the Xstream Results:

  • Eliminated handling bulk bags and converted supply to bulk truck
  • Allows customer to deliver any amount of PAC to scrubbers
  • Eliminated plugging issues experienced with previous powder delivery system
  • Improved sanitation (cleanliness) of PAC powder room.  PAC better contained within system.
  • Improved wetting & overall slurry quality
  • Lowered operating cost:   Labor / Logistics / Maintenance
  • Immediate on demand slurry capacity as required
  • Total system automation:  Instant start and stop of slurry process

These are just some of the Xstream results achieved when using our exclusive Process XstreamLiningsm .

To find out what kinds of results your company can expect, contact us to arrange a free analysis.

Semi-Bulk has been installed around the world.

Industries Served

Power Plant Flue Gas Desulfurization Case Study

Slurring pulverized limestone for FGD at a rate in excess of 1000#/minute.

The Project

Many of our power customers have installed state-of-the-art limestone storage and slurry process for FGD in their plants, incorporating two silos for pulverized limestone storage and the VACUCAM® Ejector Mixer process for slurring pulverized limestone for FGD.

Location: Indiana
Industry: Power Generation

Our Approach

To meet the capacity requirements and the logistics of these facilities, our process included two silos, each with a dual cone outlet. A modular skidded dual mixer system was installed below each silo and above the slurry storage tank. Each in-line single pass process receives 250gpm process water to the individual mixers and delivers 300gpm of 30%+ limestone slurry into the top of the slurry storage tanks feeding the scrubber.

A smaller footprint.

The modular skidded unit has a small foot print and is installed on the top of the slurry tank. The system is designed to be operated one mixer at a time with a redundant mixer on standby for each silo. Limestone is constantly delivered from the fluidized silo cone into the fluidized surge pot. Water is delivered from the water supply to the Ejector mixer. The Mixer generates a powerful vacuum and conveys the limestone through a convey hose at a rate in excess of 1000#/minute for each mixer.

The Results

Slurring pulverized limestone for FGD at a rate in excess of 1000#/minute.

The 30%+ slurry is delivered from the slurry discharge of the mixer into the top of the slurry storage tank. During factory acceptance testing, we demonstrate a limestone convey and mix rate of 1500#/minute per mixer for a single mixer
system. The system also demonstrates total dispersion and slurry quality with zero evidence of dusting in the operating area.

Semi-Bulk has been installed around the world.

Industries Served

Flue Gas Desulfurization Case Study

Conveyed limestone at a rate in excess of 1000#/minute with a 30%+ slurry is delivered to the inline slurry tank and pumped to the slurry storage tank.

The Project

Our major power customers have installed state-of-the-art limestone storage and slurry process for FGD in their plants, incorporating two domes for pulverized limestone storage and the VACUCAM® Ejector Mixer process for slurring pulverized limestone for FGD.

Location: Missouri
Industry: Power Generation

Our Approach

To meet the capacity requirements and the logistics of these facilities, a modular skidded dual mixer system is installed in the vault of each dome. The inline single pass process receives 500gpm process water to the dual mixers and delivers 600gpm of 30%+ limestone slurry to the slurry storage tanks feeding the scrubber.

A smaller footprint.

Our modular skidded unit is a small footprint installed, in the dome vault (basement). Limestone is constantly delivered from the fluidized dome floor into the fluidized surge pot. Water is delivered from the water supply pump skid to the Ejector mixers.

The Results

The Mixer generates a powerful vacuum and conveys the limestone through a convey hose at a rate in excess of 1000#/minute for each mixer. The modular unit can be operated as a single mixer process or it can be operated with both mixers simultaneously.
The 30%+ slurry is delivered to the inline slurry tank and pumped to the slurry storage tank. A redundant slurry pump is provided on the skid.
A water supply pump skid is provided with total redundancy to deliver water to either system below each of the domes. During factory acceptance testing, we demonstrate a limestone convey and mix rate of 1500#/minute per mixer or 3000#/minute for the dual mixer system. The system also demonstrates total dispersion and slurry quality with zero evidence of dusting in the operating area.

Semi-Bulk has been installed around the world.

Industries Served