An informative and educational resource specializing in process control instrumentation, analytical instruments, and related industrial equipment. Content includes technology basics, how-to's, new product developments, and application notes. Blog is courtesy of Alliance Technical Sales, a leading Manufacturers' Rep headquartered in Clarendon Hills, IL and serving customers in Illinois, Indiana, Iowa, Michigan and Wisconsin.
Magnetic Level Gauges and Magnetostrictive Level Transmitters for Black Liquor Chemi-Washer in Paper Mill
Black liquor is a waste product found in paper mills from the processes used to break pulp wood down into usable fibers. Many different methods are used to wash black liquor from the fibers before they are sent to the paper / cardboard making sections of the mill, one of which is a black liquor Chemi-Washer. The Chemi-Washer consists of a train of eight washes used to clean black liquor off of the paper fibers. The waste liquid gets progressively cleaner through each section of the train. DP transmitters are traditionally used to measure level in each section of the washer.
Jogler, a leading manufacturer of industrial level instrumentation offers a case study on successfully handling this application.
Have you ever experienced microbial contamination that led to an out-of-spec event, water system quarantine, or product recall even though you perform routine testing? How much time and cost did it take investigate or undo this damage? Even with false positive results, it’s often too late.
The water loop has to be sanitized, rinsed, retested and the affected product may be a total loss.
While plate counting is a regulatory requirement, there are inherent risks and delays that can greatly impact the accuracy of test results. Let’s take a look at these risks.
No matter how careful you are, contamination can still occur at any stage of sampling.
Waiting 5-7 days to get results causes you to use “at risk" water without knowing the microbiological quality.
A sample you take now could yield very different results than a sample taken minutes or hours later.
Sampling too infrequently can also cause you to miss an excursion.
You can only count what will culture and colonies you can actually see.
Such variables and limitations can mislead your assessment of the water quality.
What if you could reduce these risks with a complementary test method? Instead of capturing snapshots that are a week old with sampling, you could have full visibility of your process with continuous, real-time monitoring. When used in parallel with plate counting, the Mettler Toledo 7000RMS real-time microbial detection analyzer can help you react quickly to any trend or excursion before it becomes an event. Giving you complete process transparency for minimized risk and real-time water release.
The Mettler Toledo 7000RMS advanced laser-induced fluorescence technology provides a direct cell count of microorganisms present in pharma-grade waters. Overcoming limitations of growth-based laboratory methods that are an estimation of microbial presence and dependent on time and incubation conditions.
Counts microorganisms from as small as 0.50 microns and accepts direct input line temperatures of up to 90ºC. The Mettler Toledo 7000RMS delivers 24/7 monitoring of water treatment, storage tanks, distribution loops, points-of-use and clean-in-place processes.
Applications: Continuous monitoring of PW, WFI and UPW
In power plants, approximately half of unscheduled shutdowns can be traced to water cycle chemistry issues which involve costly repairs and lost operating revenue that can never be recovered. One of the most important parameters to measure to improve power plant water system efficiency is dissolved oxygen, DO. DO causes corrosion of components that contain iron and copper. Transport and deposits of these particles can also accelerate corrosion and damage critical plant equipment.
DO is measured at several locations in a water system. Traditionally, DO is measured with polarographic sensors, which use a gas permeable membrane to separate the sample from the electrochemical cell inside. Depending on the operating environment, polarographic sensors can require monthly electrolyte and membrane replacement. After service, the sensor cannot produce meaningful readings for several hours because of required polarization. They are also sensitive to sample flow rate and experience interference from dissolved hydrogen.
Mettler Toledo pure water optical DO sensor
Unlike traditional DO sensors, the Mettler Toledo Thornton online pure water optical DO sensor does not require polarization. It uses optical technology to provide fast and accurate analysis. Its measurement response is six times faster than polarographic sensors. The optical DO sensor also does not use electrolyte or a membrane, so it's not sensitive to flow or susceptible to damage from particles and dissolved hydrogen interference. There is no interior body to replace, and service is required only once a year to quickly and easily replace the one-piece Optocap sensing element. This provides plants with lower operating costs and reduced downtime.
The Mettler Toledo Thornton pure water optical DO sensor provides a fast, accurate and low-maintenance method of measuring dissolved oxygen concentration in power plant pure water systems.
For more information for any Mettler Toledo Process Analytics product, contact Alliance Technical Sales. Visit https://alliancets.com or call 630-321-9646.
Jogler, a Baton Rouge, Louisiana manufacturer of high quality high quality magnetic level gauges, magnetostrictive transmitters, laser level transmitters and point level switches has a new 2019 product catalog available.
Established in 2000, Alliance Technical Sales, Inc. is a manufacturers’ representative agency providing numerous process control instrumentation solutions to customers across a wide range of industries.
Through the years we have specialized in providing in-line liquid analytical solutions and take great pride in the fact that Alliance Technical Sales is well known to customers throughout the Midwest, and highly respected in the instrumentation industry by the manufacturer’s we represent. By combining world-class products, application expertise, and unsurpassed customer service, Alliance Technical Sales enables its clients to increase manufacturing efficiency, reduce production costs, and improve product quality and value.
Winter is here in full force. Plant operators and plant maintenance must be vigilant in preventing the freezing of their equipment. Cold temperatures can often damage or destroy objects and their contents. Pipes, valves, tanks, vessels, conveyers, and housings are examples of common objects that can be hurt by the cold and have devastating consequences, costly downtime and unplanned outages.
Anticipating freezing conditions and protecting buildings, equipment, and grounds against freeze damage is a vital part of a Facility Maintenance Program. There's a wide range of freeze protection applications you need to consider, including pipe tracing, drum heating, roof and gutter de-icing, IBC heating, valve de-icing, vessel heating, and enclosure heating.
Ensure that whatever means of freeze protection you have available are ready. Failure to ensure these systems are properly protected from freezing can have catastrophic consequences. Act now, before it's too late.
The BriskHeatSilver-Series insulators are a configurable insulation system made of durable, high-temperature cloth that allows for very easy installation and removal. The Silver-Series provides 1” thick, needle-punched fiberglass insulation with hook & loop closures. The innovative design applies very efficient thermal insulation for hot or cold pipes, valves, instrumentation, tanks and vessels in industrial and commercial environments. Custom designs can be manufactured for unique requirements.
Black liquor is a waste product found in paper mills from the processes used to break pulp wood down into usable fibers. Many different methods are used to wash black liquor from the fibers before they are sent to the paper / cardboard making sections of the mill, one of which is a black liquor Chemi-Washer. The Chemi-Washer consists of a train of eight washes used to clean black liquor off of the paper fibers. The waste liquid gets progressively cleaner through each section of the train. DP transmitters are traditionally used to measure level in each section of the washer.
