sizing and pricing md pumps for ph control
TRANSCRIPT
Sizing and Pricing MD Pumps for pH Control,Webinar May 29, 2015 11:30 (EDT)Mike Dillon,President; Gordon Fenton, Engineering Manager, Daniel Lakovic, Marketing ManagerSEEPEX, Inc.Email: [email protected] Subject: Vader
The concept of pH controlUsing two pumps and a pH sensor and a PLCSizing the pumpsPricing pumps using Quick QuoteMike DillonPresidentSEEPEX, Inc.
A COMMON APPLICATION
1.Waste streams
2.Water conditioning
3.Cooling towers
4.Mine tailings
5.Pharmaceutical or cosmetic preparations
From the IMP brochure: IMP Brochure page 7SUBITEM SECTION3
HOW DOES IT WORK
• PLC- The logic:
• If the pH is high: add acid- The higher the pH, the more acid is needed
• If the pH is low: add base (alkalai)- The lower the pH the more base is needed
• If the pH is OK neither pump should run- Expanded: pH of 5-9 is OK
• A buffer is required so both pumps are not running at the same time- If the pH is >9 add acid
> The higher the pH, the more acid is needed- If the pH is <5 add base
> The lower the pH the more base is needed- If the pH is >5 or <9 neither pump should run
SUBITEM SECTION4
pH CONTROLLER FROM YOKOGAWA
yokogawa orp-ph450
SUBITEM SECTION5
SUBITEM SECTION6
CUSTOMER DECISIONS
What acid to use: Nitric, citric, acetic, sulfuric, hydrochloricWhat base to use: Magnesium hydroxide, sodium chloride, sodium hydroxide
Materials of Construction: See above. Remember they have to use pipes and valves in the system so they should know what they need
Flow rates: These depend on the strengths of the reagents and the flow of the process or waste stream and the expected pH range of the waste stream
Pressures: Again this depends on the pressure of the system to be treated and any restrictions between the pump and the injection point; i.e., check valves, pipe or hose friction, filters and the like.
SUBITEM SECTION7
• Be careful about mechanical seals- Acids tend to stay liquid more than bases- Some alkaline materials really like to crystalize on the seal face
• NaOH, NaCl, for example- At least use a quench (GAM) with a quench pot
> Water is OK as a quenchBut it likes to evaporate
> Glycerin or a light oil is a better choice Watch out for bad combinations
Glycerine + Nitric acid + Sulfuric Acid = - If the quench liquid cannot be adequately maintained
> Use a double seal with a flush system
A SPECIAL CAUTION
SUBITEM SECTION8
• Acetic acid- 12 gph- 120 psi- Materials http://www.seepexsales.com/engineering/
- 316 SS + EPDM• Pump Size 003-12• http://www.seepexsales.com/
- Download the program- Pump Size 003-12- Pump Price $2,955
PICK THE PUMPS
SUBITEM SECTION9
• Magnesium Hydroxide- 25 gph- 120 psi- Materials http://www.seepexsales.com/engineering/
- 316 SS + NBR• Pump Size • http://www.seepexsales.com/
- Download the program- Pump Size 006-12- Pump Price $3,973
• Put a quench on the seal
PICK THE PUMPS