Showing posts with label paper production. Show all posts
Showing posts with label paper production. Show all posts

Common Applications for Inline Process Refractometers in Everyday Products

Process refractometers are used in many applications, across a wide variety of industries today. These digital electronic instruments are used to measure dissolved solids and percent concentration in many common, and not-so-common, products. From foods such as juice and jellies, to harsh chemicals such as sodium hydroxide and sulphuric acid, to the paper you touch everyday, there's probably a refractometer monitoring the production line to ensure consistent quality.

Listed below are industries and applications where you may find inline process refractometers.

THE CHEMICAL INDUSTRY

Common chemical processing applications:
Sodium Bicarbonate; Copper Chloride; Hydrogen Peroxide; Acids; Acrylate; Ammonium Hydroxide; Sodium Dichromate; Polymers; Iron Chloride; Sodium Hydroxide; Ammonium Nitrate; Polymers; Lubricating Oils; Chromium Trioxide (Or Chromic Acid); Acetic Acid; Ammonium Fluoride; Oleum; Amine Oxide; Resins; Ethylene Glycol; Polyamides; Nickel Chloride; Ethylene; Glycols; Formic Acid; Amino Acid; Resins; PET; Solvents; Sulphuric Acid; Glycerol; Urea; Formaldehyde; Fluranes; Coolants; Nitric Acid; Polycarbonates; Caustic Soda; Polyethylene; Gels; Cellulose Derivates; Ammonium Sulphate; Citric Acid; Sodium Gluconate; Lactic Acid; Resins; Styrenes.

THE PLASTICS INDUSTRY AND SYNTHETIC FIBER INDUSTRY

Common process applications in the production of plastics and synthetic fiber:
Hexamethylene Diamine; Polycarbonates; Vinyls; Polyethylene; Additives; Dimethylformamide; Fiberglass; Rayon; Cyclohexanol; PET; Polyamides; Cyclohexanon; Nylon Salt; Adipic Acid; Styrenes; Polyesters; Polymers; Dimethylterephthalate; Acetate; Resins; Acrylics.

THE PULP STOCK & PAPER PROCESSING INDUSTRY

Common applications in pulp processing and paper production include:
Chlorine Dioxide; Alum; Oxidized Starch; Sizing Chemicals; Black Liquor; CMC; Green Liquor; Starch; Latex; Ozone; Hydrogen Peroxide; White Liquor; PVA; Styrene Acrylic; Dextrin; Styrene Butadiene Latex; Sodium Dithionite.

DETERGENTS, LOTIONS, AND SOAP PRODUCTION

Common applications in soap and detergent production include:
Palm Oil; Glycerol; Caustic Soda; Salt; Fatty Alcohols; Caustic Potash; Soda Ash; Sodium Bicarbonate; Citrus Oils; Fatty Acids.

THE PRODUCTION AND PROCESSING OF STARCH SWEETENERS

Common applications in the production of starch-based sweetners:
Maltose; Fructose; Aspartame; Sorbitol; Flavors; Lactitol; Xylose; Mannitol; Dextrose; Glucose; HFCS (high fructose corn syrup).

IN SUGAR PROCESSING

Common applications in sugar processing:
Liquid Sugar; Confectionery Sugar; Affination; Extraction; Vacuum Pan; Molasses; Thick Juice; Press Water; Brown Sugar; Molasses; Thin Juice; Invert Sugar; Cane Sugar; Sucrose; Beet Sugar.

For more information about the application of process refractometers in industrial applications, contact Electron Machine Corporation by calling 352-669-3101 or by visiting https://electronmachine.com.

A BLRBAC Compliant Monitoring System Designed Specifically for Black Liquor Recovery Boilers

MDS Monitor Divert System
MDS Monitor Divert System
The Electron Machine Corporation manufactures a BLRBAC compliant Black Liquor solids monitoring system designed specifically for Black Liquor Recovery Boilers.

The Black Liquor Recovery Boiler Advisory Committee is a group that exists for the purpose of generating safety procedures and guidelines that govern the operation of Black Liquor Recovery Boilers.  The BLRBAC was formed in 1961 by several groups of concerned professionals that had become alarmed by the number of Black Liquor Recovery Boiler explosions. 

The MDS Monitor Divert System consists of two completely independent MPR E-Scan Hybrid-Digital refractometers with a separate monitor console that supervises the proper operation of each refractometer. The monitor constantly insures that all parameters remain within operational limits and applies the proper divert or alarm actions should a fault or low solids liquor be detected. A built-in printer records all actions with a date and time stamp. The entire system is designed to be user friendly with large daylight-readable color displays and an intuitive menu-driven interface.

Isolation Valves are also required to meet the BLRBAC guidelines and allow the refractometer sensing heads to be isolated from an active pipeline should maintenance be needed. The system closely monitors the position of these isolation valves to verify that the refractometers are in service.

All functions of the MDS Monitor Divert System are automatic. For example, should a refractometer fault occur the unit is electronically removed from service and an alarm is activated. Simultaneously the output signal is driven low to warn the operator to disregard this reading. The monitor system then isolates, displays the fault and provides a hard copy record on the built-in printer. Liquor diversion is now controlled by the refractometer in service.
    MDS Monitor Divert System
  • Intelligent purge function- ensures the proper cleaning and extends prism life 
  • Divert trending - provides an actual time left before a diversion when liquor solids are declining 
  • Password protection- to protect critical software areas
The MDS Monitor Divert System is pre-wired and mounted on a panel for easy installation. All customer connections are made to a single terminal strip. Standard output is a 4-20mA for liquor concentration with relay contacts for liquor divert, alarms, and system error indicators. A remote divert input is also available. The system can be provided in an optional stainless steel enclosure with either a vortex-cooler or fan ventilation depending on the specified mounting location.

For more information on the BLRBAC visit here.
For more information on the MDS Monitor Divert System visit here.

Reliably and Consistently Measuring Green Liquor Density in the Paper Mill

Paper mill green liquor density measurement system
Paper mill green liquor
density measurement system.
Green liquor is the dissolved concentration of sodium sulfide, sodium carbonate, and other compounds from the recovery boiler in the paper making process. Measuring its density is a critical component for the quality of the paper production.

The difficult scaling associated with green liquor results in an optical coating on the refractometer sensing head. If this scaling can be controlled to allow an acceptable duration of on-line measurement, and then effectively removed when coating occurs, the accuracy of the refractometer can be fully utilized with minimal maintenance. The primary issue then becomes the maintenance required to keep the cleaning system operating effectively. 

Using inline refractometers with accompanying heated high-pressure water cleaning systems provides excellent results in effective removal of optical coatings by reducing thermal changes, minimizing maintenance, and allowing for a reliable measurement source for on-line automatic control.

The Electron Machine MPR EScan is used to measure the green liquor dissolved density, or TTA, at two stages in the process: after the green liquor dissolving tank and after the green liquor clarifier. The in-line measurement, with the refractometer sensing head installed directly in the main process lines, allows real-time control of green liquor dilution to meet target TTA set-points. The measurement is also used to indicate (and prevent) excessive green liquor density and the resulting dangerous impending crystallization within the dissolving tank.
Paper mill green liquor density measurement system MPR Escan
Electron Machine MPR Escan

Reducing the variation of green liquor solids by automatically controlling weak-wash dilution with the MPR E-Scan refractometer results in a reduction in scaling. Scaling issues are further reduced when pressurized water, heated to the process temperature, is used to effectively clean the refractometer optical components. The compound result is beneficial for both control and maintenance.

For more information, visit www.electronmachine.com or call 352-669-3101.