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OMA-300-CM TLG-837 Software OMA-517 Hydrogen analyzer Tail gas, ASA-400, DeNOx, Ammonia analyzer Sulfur analyzer Chlorine analyzer & Chlorine dioxide, TLG-837, Software , new wall mount OMA-517, Hydrogen analyzer, Tail gas, ASA-400, DeNOx, Ammonia analyzer, Sulfur analyzer, Chlorine process analyzer & Chlorine dioxide, OMA-300-CM - on line liquid Color analyzer, Feed Forwards Control in SRU, EDC, Total Sulfur
TSA-100 a Total Sulfur Analyzer Applied Analytics’ TSA-100 Process Total Sulfur Analyzer is designed for accuracy, versatility, fast-response, and ruggedness in any range of total sulfur measurement. This innovative instrument has critical advantages over older standards such as the lead acetate tape method, a high-maintenance process with slow measurements, cumbersome adjustments, and toxic consumables. Most significantly, the TSA-100 is engineered for insusceptibility to component cross-interference; the analyzer can provide fully accurate total sulfur measurements even when interfering compounds such as H2S, SO2, and mercaptans are all present in the sample.
The analyzer is based on the standard method for total sulfur (ASTM D 5453 – 06), which involves flowing the hydrocarbon sample in a hot combustion tube in an oxygen-rich environment. The sulfur is oxidized to SO2. The analyzer uses the UV absorption of the single component (SO2) to determine its concentration, and the total sulfur. The TSA-100 provides the ideal SO2-monitoring solution. The TSA-100 also works well in streams containing high-level aromatics, and nitrogen.
The TSA-100 consists of four major subunits: 1) a xenon light source, which sends light through fiber optic cables into the 2) flow cell, in which the unique characteristics of the sample define its interaction with the light; the light then enters a 3) holographic grating, which separates white light into its components such that the 4) diode array detector can measure the intensity of radiation at each wavelength.
A moving parts sulfur-detection system relying on paper tape requires substantial maintenance, frequently incapacitated by sample saturation or tape replacement. The regular response time can be as long as several minutes, depending on the sulfur concentration. Lastly, this method is quite vulnerable to inaccuracies stemming from cross-interference among the sample components.
The advantages of an AAI analyzer over paper tape are economically, environmentally, and technologically significant. The spectrophotometric principles of the system eliminate the need for costly, polluting consumables like lead acetate. The TSA-100 is solid state (no moving parts) and connects to the sample through fiber optic cables, designed with the safety of the equipment and those operating it as the highest priority. While lead acetate tape gives slow, discrete measurements, the TSA-100 provides instantaneous and continuous measurements.
The TSA-100 can measure total sulfur in a variety of petroleum and refinery hydrocarbon gas and liquid streams (e.g. crude oil, gasoline, diesel, jet fuel, kerosene, and natural gas). Concentration range can vary from 0-5 PPM to 0-10,000 PPM, and the instrument features auto-switching between multi-streams. With all its vast improvements over older total sulfur methods, the TSA-100 demonstrates the long-term benefits of incorporating AAI’s flagship technology into your process.
Please contact:
Please contact:Greg Sullivan
Sales & Account ManagerApplied Analytics, Inc.
Setting the bar high by Designing & Manufacturing "state-of-the-art" low maintenance process analyzers & sampling systems for over 15 years.gregs@a-a-inc.comTel: (978) 461-0080 x 250
Fax: (978) 461-5999Web: www.a-a-inc.com
Review: AAI's analyzers for Feed Forwards Control in SRU
The efficiency of sulfur recovery, a procedure of utmost importance in many industrial processes, has gradually improved over the years. In maximizing this efficiency, control over oxygen input is paramount. Proper control in this respect requires accurate monitoring of H2S levels in acid gas; this in turn necessitates consideration of certain parameters such as time delay between measured signals from the beginning and the end of the process, or the extreme variation of feed gas concentrations throughout the process. It has been demonstrated that feeds forward control in conjunction with tail gas control in sulfur recovery units drastically increases efficiency of recovery.
AAIs Feed Forwards Analyzer monitors the H2S concentration in feed gas or acid gas (H2S 0-100%) via a direct UV spectroscopic technique. The signals obtained in this method are used to control oxygen input to the SRU (Sulfur Recovery Unit) in question, as well as continuously analyzing and evaluating process effectiveness. AAI analyzers respond extremely rapidly to high fluctuations of H2S concentration while easily correcting for pressure and flow variations in the stream.
Some of the advantages of integrating an AAI analyzer include:
Safety of operation and analyzer components: H2S, particularly at high concentration, is extremely toxic and corrosive. AAIs FFA product line utilizes fiber optics to transmit light to and from the flow cell, allowing the electronics to be housed in a separate enclosure that is protected from the gas flow. AAI prioritizes the safety of our analyzers as well as the safety of those operating them.
No moving parts: AAIs solid state technology is a clear benefit in the corrosive environments it is designed for.
Fast response and auto-compensation: The full-spectrum diode array FFA analyzer responds rapidly to wide fluctuations in concentration. The instrument also automatically compensates for pressure variation by continuously checking measurement point pressure against calibration pressure.
Flexibility: If necessary, the system can incorporate infrared detection for monitoring concentrations of CH4 and CO2 all integrated and using the same controller and sampling system.
AAI Tackles EDC The production of the PVC that carries our water, insulates our power cables, lines our kitchen floors, and entertains our children is a process which has much to gain from the utilization of AAI analyzers. Ethylene dichloride (EDC) is the first intermediate in the manufacturing of the versatile plastic from the raw materials of chlorine and ethylene. In combining Cl2 and C2H4, EDC is created; while this compound is useful on its own as a strong solvent, over 90% of the EDC produced is dedicated to vinyl chloride monomer (VCM), the chemical precursor to PVC. 1,2–Dichloroethane, as EDC is also known, is heated to around 500° C in a cracking furnace, eventually splitting into the desired VCM and recyclable dry HCl. The products are quickly cooled to avoid recombination, after which unreacted EDC is returned to the furnace and the HCl byproduct is reserved for oxychlorination, an second method for creating EDC.
Applied Analytics provides three applications which prioritize efficiency, product quality, and safety within this specific chemical process.
Applications
Analyzer: Microspec
Component(s): Water
Range: 0-20 ppm
Those overseeing chemical systems must always consider the threat of corrosion, and monitoring the water level to a specificity of 0-20 parts per million is the first line of defense. AAI’s Microspec is designed to monitor low and high water contents in various solvents. The Microspec consists of an IR light source, a detector with a filter that isolates a specific IR wavelength, and an ATR or Transmission flow cell.
Analyzer: OMA-300
Component(s): Chlorine and ferrous tetrachloride
Range: 0-50 ppm (Cl2) and 0-100 ppm (FeCl3)
The OMA-300 is a diode-array fiber-optics process spectrophotometer, continuously measuring a high resolution (190-800 nm at 1 nm resolution) spectra of the sample. The absorbance signals are correlated to concentrations via a multi-wavelength method.
FeCl3 is an efficient catalyst in the direct chlorination of ethylene, the reaction in which ethylene and chlorine are dissolved and combined to form EDC:
C2H4 + Cl2 --- > C2H4Cl2
While FeCl3 is extremely useful in producing EDC, its presence in the product is highly undesirable. EDC which has not been washed of all its FeCl3 threatens to clog the cracking furnace, the instrument which heats and breaks EDC down into dry hydrogen chloride and vinyl chloride monomer (which is then polymerized to create PVC). Monitoring the level of ferrous tetrachloride in EDC is thus of critical importance in protecting against fouled mechanisms.
Both FeCl3 and free chlorine can potentially pollute the EDC product. PVC made from impure EDC has different characteristics which make it less useful than high-quality PVC. Maintaining EDC purity is imperative if the product is not to be compromised, and such quality assurance necessitates monitoring of both components.
AAI’s innovative multicomponent analysis makes such monitoring possible. While conventional analyzers struggle with measuring interfering components like Cl2 and FeCl3, the OMA-300 is specifically designed for selectivity and accuracy in such scenarios.
Please visit us at IFPAC
"Twenty-First International Forum Process Analytical Chemistry - IFPACŪ", being held in Baltimore, Maryland, U.S.A., January 28-31, 2007.
AAI booth number 405
AAI will be Presenting the following:
(To view abstract- click on topic)
Direct Process Monitoring at Sub-PPM levels: The Spectroscopic Approach
One Analyzer Fits All: one technology covers a range of sulfur recovery applications
Continuous Monitoring For Cleaning Validation: a CIP application
Direct Process Monitoring at Sub-PPM levels: The Spectroscopic Approach
Concentration measurements at sub-PPM levels are essential to efficient process control and to the adhering of strict environmental regulations. The spectroscopic approach allows for a direct method that does not involve any separation, sample preparation, or the use of additives, and utilizes a high-resolution high signal-to-noise low stray light process spectrophotometer. An example of such an application is the monitoring of H2S 0-10 PPM +/- 0.1 PPM in sales/sweet gas.
Since the absorbance signals are very low for sub-PPM levels, a long flow path and the ability to measure at high pressures are essential. Most sub- PPM applications are correlated to absorbencies in the low UV range (190-220nm), a very demanding measurement range. The optics/mechanics and the analytical method which allow for the direct spectroscopic approach will be discussed.One Analyzer Fits All: one technology covers a range of sulfur recovery applications
Legislation enforcing increasingly tougher emission control of toxic substances has now been passed worldwide. An important subgroup of such substances is the sulfur-based compounds; sulfur recovery units are critical component of the oil-refining and liquefying natural gas process. To comply with strict regulations and to improve efficiency in sulfur recovery processes, fast, accurate, and continuous analytical techniques are necessary.
At a single plant a variety of recovery process are normally operated; using a single type of analyzer for a majority of applications guarantees better technical support and a higher level of expertise in plant operators.
One analyzer with different sampling systems can be utilized for a variety of applications. A few common ones are:
• H2S concentration from 0-10 PPM to 0-100% (spanning the entire dynamic range with one analyzer)
• H2S and SO2 in tail gas control in a Claus process
• H2S and mercaptans
• SO2 and ammonia in stack
• Sulfur in oil (using a head space sampling system allows for measurements in the gas phase rather then in the opaque oil
• Total sulfur (converting the sulfur compounds to SO2 and measuring the SO2
• H2S in diesel oil and water
The utilization of spectroscopy in step with diode array technology, a time-tested, industry-accepted technology for sulfur recovery applications, will be reviewed.
Continuous Monitoring For Cleaning Validation: a CIP application
A process diode array spectrophotometer is installed directly onto a batch reactor, continuously tracking the concentration of contaminants in the washing/rinsing cycle of a pharmaceutical plant.
During each rinse cycle, the contaminates will reach a plateau; at this point, the rinse can not remove any more contaminants. Determining this point during the cleaning process is critical—in determining the efficiency of a given wash cycle, assuring the purity level of the reactor, and minimizing the wash time.
UV VIS absorbance techniques are ideal for continuous monitoring of active material in a wash cycle: water and methanol, usually the rinsing substances, do not absorb in the UV, and the high absorbance signals in the low UV of most contaminates allows for detection down to 1 PPM. The IR or NIR wavelength range cannot be used for the CIP process monitoring due to the interference from the rinsing substance, namely water or methanol.
A high-resolution full spectrum analyzer is essential—the same analyzer is used for monitoring various active materials, each requiring a dedicated analysis method. An imbedded industrial computer is used to create and store the methods for each contaminant.
The analyzer, sampling method, and software will be discussed along with cases of specific applications.Hydrogen Sulfide monitoring in Sweet / Sales Gas As previously reported in our newsletter Applied Analytics, Inc are now providing reliable solutions for a wide variety of sulfur composition applications. Utilizing time-tested technology alongside new products, AAI is able to cover most of the sulfur recovery applications for both gases and liquids, and for all hazardous area classifications.
One of our most common applications is the direct monitoring of H2S 0-10 PPM +/- 0.5 PPM. This application is common in sweet / sales gas where the H2S levels in the sales gas are strictly regulated. The continuous monitoring of the H2S in the sales gas allows for cost affective and accurate control of the sulfur recovery process as well as an indication on the purity levels of the gas. Other techniques that are currently available for this application are indirect, require consumables such as reagents, or paper tape.
In order to accurately measure the H2S absorbance spectra a high-resolution high signal- to- noise low- stray light spectrophotometer is needed. The AAI H2S analyzer is a UV-VIS diode array process spectrophotometer, contains no moving parts and is designed to address on-line applications that require fast, reliable, and maintenance-free monitoring of concentrations, including both single- and multi-components.
H2S can be measured in the presence of up to 500-PPM aromatics. The AAI H2S analyzer is operating at high pressure (up to 100 Bars) to simplify the sampling system and increase S/N.
With analyzers currently operating on six continents, in some of the world’s harshest conditions, AAI provides a track record you can trust.
Applied Analytics, Inc. would like to invite our customers, distributors, and all other interested parties to a two day training session this October at our headquarters in Maynard, MA. Take the opportunity to enjoy New England in the fall while learning more about our operation and applications, as well as both our industry tested veteran products and our recently developed line. The training will provide you with a hands-on familiarity of, and the theoretical background behind, our analyzers. Topics to be covered:
- Spectroscopy in general, with a focus on UV-VIS
Quantitative measurements by UV absorbance spectroscopy Instrumentation, from single wavelength to scanning to Diode array Optics and electronics of various systems Specific applications relevant to course participants, including potential problems, detections, and solutions Development of an application method A review of the OMA product line: description of the analyzers, including specifications, capabilities, and sampling systems control Hands-on exercises:
- Maintenance of the functions and hardware of the analyzer
- Troubleshooting of sampling systems and spectrometer
- Running of the continuous software, single- and multi-components measurements, and taking standards
- On line calibration, validation, and troubleshooting utilizing standard gases
Sessions will be run in groups of no more than six people at a time in order to best tailor the material to your individual concerns and will be available on the following dates in October:
- 4th-5th
- 11th-12th
- 18th-19th
- 25th-26th
Please contact AAI to register for any of the above dates, assistance with travel and accommodation arrangements, and any other questions. sales@a-a-inc.com
PRESS RELEASE
Rack Mounted Fiber-Optics UV-VIS Diode Array Process Spectrophotometer
(Maynard MA) – Applied Analytics is pleased to announce the introduction of a new rack mounted process analyzer, the OMA-406. The OMA-406 is a UV VIS diode array process spectrometer based on the well-accepted wall-mounted OMA-300 Process Analyzer. The analyzer contains no moving parts and is designed to address on-line applications that require fast, reliable, and maintenance-free monitoring of concentrations, including both single- and multi-components.
The Model OMA-406 Process Analyzer fits a standard 19” rack and is functionally identical to the OMA-300, which is typically housed in an explosion proof enclosure.
The stream composition is obtained through continuous measurement and analysis of a spectrum using a 1024 element diode array, in a wavelength range of 190 nm to 800 nm with a resolution of 1 nm. A broad range of flow cells is available, ranging in path length from 1 mm to 1000 mm, to meet the concentration characteristics of the particular stream.
Typical applications for the OMA-406 include the monitoring of chlorine, trace impurities, metal ions, nitrogenous compounds in exhaust gas, sulfur based components such as H2S and SO2, as well as clean in-place monitoring for pharmaceutical facilities.
The analyzer is controlled via an embedded Windows XP industrial computer with a touch screen user interface. Output signals include 4-20mA, RS232 and Modbus (TCP/IP, Ethernet, serial). A variety of sampling systems are also available.
For more information, please contact sales at Applied Analytics, Inc, 2 Clock Tower Place, Suite 535, Maynard MA 01754, phone: (888) 461-0080, email:
sales@a-a-inc.com.
H2S-220 - on line Hydrogen Sulfide analyzer
I
nstantaneous on-line H2S analysis using a Diode Array UV SpectrometerFor immediate release
Thursday, October 20, 2005
Maynard, Massachusetts - Applied Analytics introduces the H2S-220 a process Fiber-optics diode-array UV spectrophotometer for on-line H2S monitoring.
The H2S-220 is a solid state device designed to address on-line applications that require accurate, rugged and maintenance-free monitoring of H2S. The diode array design allows us to accurately correct for species that have interfering absorbencies and to measure both very low and very high levels of H2S with the same analyzer. The H2S-220 measures 1,024 discrete frequencies between 190 nm and 800 nm with a 1.0 nm resolution
The analyzer is offered in general purpose or explosion proof enclosures and includes an option for automatic zero and span. Output signals include 4-20mA and Modbus TCP/IP.
Applied Analytics, Inc. is a Maynard, MA based manufacturer of process analyzers utilized in the chemical, petrochemical, power generation, pulp & paper, food and pharmaceutical industries.AAI at IFPAC-2006 Booth 101
APPLIED ANALYTCS, INC. (AAI) is pleased to announce that it will be presenting a paper and exhibiting at the IFPAC – 2006 Twentieth International Form for Process Analytical Technology. AAI will be featuring its:
New Fiber Optic Based Flow Cell for NeSSi Standard Modular Sampling Systems
OMA Series Analyzers based upon full spectrum diode array analyzers with PC Controller for single component, single component in presence of interfering species, or multiple species (simultaneously) measurements.
Crude Oil Sampling Systems.
The Process Absorbance Spectroscopy session focuses on applications of UV / Visible / Near-Infrared / Mid-Infrared absorbance techniques to perform process analysis in a variety of situations. In addition, novel technologies that enhance the utility of absorbance spectroscopy for process application will be discussed.
Direct Measurement of Low Levels of H2S in Moderate to High Levels of Mercaptans in Refinery Applications
Yael Barshad, Applied Analytics, Inc., Maynard, MA; Presented by John A. ConstantineauLink to the IFPAC Program Guide: http://www.ifpac.com/IFPAC06/IFPAC06DtlProg.html
OMA-300-CM - on line liquid Color analyzer
Instantaneous on-line color analysis Using a Solid State Diode Array Spectrometer
For immediate releaseBoston, Massachusetts - Applied Analytics introduces a new line of process diode array spectrophotometers for on-line applications. The OMA-300-CM utilizes advanced spectroscopic components offering a cost effective solution for on-line applications that otherwise might not be justifiable. The OMA-300-CM uses fiber optics cable to transmit the light from the analyzer to the sample and back instead of bringing the liquid sample into the analyzer.
The OMA-300-CM is an affordable and easy to use instrument capable of full spectral analysis of clear liquid hydrocarbons. Traditionally color is being measured on-line by a single wavelength measurement that can be easily obscured and does not address clear liquids very well (low APHA numbers of 0 to 30). The patent pending OMA-300-CM utilizes the entire visible spectrum to calculate color in terms of tristimulus values and the APHA value resulting in accurate and reproducible results. Calibration and validation of the measurements are performed utilizing internal tools (software and hardware).
Applied Analytics, Inc. is a Boston based manufacturer of process analyzers utilized in the chemical, petrochemical, power generation, pulp & paper, food and pharmaceutical industries.
In Situ Analysis of Sulfuric Compounds and Air Demand in a Claus Process Using a Solid State Diode Array Spectrometer
For immediate release
Boston, Massachusetts - Applied Analytics introduces a new revolutionary tail gas analyzer. While previous generations were based on extractive systems that required transporting a sample to an external analyzer, and the removal and control of sulfur vapor levels, the new TLG-837 uses mathematical tools and superior optics to achieve better analytical results. The light is transmitted via a short fiber optics cable into a probe that is inserted into the process line through a bored ball valve for "hot - tapping". The light than passes through the gas and is reflected by a mirror and sent back to the spectrometer via a second optical fiber for analysis. Steam is used to keep the windows clean from sulfur deposits at all times.
The patent pending TLG-837 has no sampling system and no de-mister using a new and innovative approach to this problem. The TLG-837 does not extract sample from the process for analysis resulting in a far simpler system and a lower cost of ownership.
Applied Analytics, Inc. is a Boston based manufacturer of process analyzers utilized in the chemical, petrochemical, power generation, pulp & paper, food and pharmaceutical industries.
Chlorine / Chlorine Dioxide Analyzer
On-line Continuous monitoring of Chlorine and Chlorine Dioxide in gaseous process streams.
For immediate release
Boston, Massachusetts - Applied Analytics introduced a newly developed application for it’s OMA-517 Process Diode Array on-line spectrometer. The OMA –517 is used to monitor chlorine in gaseous streams containing VCM, CFC, EDC, PVC and many others. Measuring both chlorine and chlorine dioxide simultaneously is achieved by a multi-component analysis of a complete absorption spectrum from 250 nm to 600 nm. Both chlorine and chlorine dioxide can be determined from 0 to 100% full scale and down to 10 PPM minimum full scale. User interface with the analyzer is by means of an active matrix color touch-screen and Win 95 as an operating system.
The analyzer is available as a stand-alone unit or combined with a computer-controlled automatic sampling system allowing introduction of span and blank at certain time intervals assuring valid readings.
Applied Analytics, Inc. is a Boston based manufacturer of spectrophotometer for process monitoring. The analyzers are used for a variety of application in the chemical, petrochemical, pulp & paper, food and pharmaceutical industries. Applied Analytics analyzers are also being used for environmental monitoring.
TLG-826 Tail Gas Analyzer
Monitoring H2S, SO2, COS, CS2, Sulfur vapor & Air Demand in a Claus Sulfur Recovery Unit.
For immediate release
Boston, Massachusetts - Applied Analytics introduced it’s new Tail Gas Analyzer, the TLG-826. This analyzer was designed in response to an increasing need to improve recovery rates of existing sulfur plants, designed to remove sulfuric compounds from natural gas and gasoline.
The heart of the new TLG-826 is the company’s third generation solid state diode array spectrophotometer - the OMA-517. The design allows for simultaneous measurement of all of the sulfur containing compounds (H2S, SO2, COS, CS2 and Sulfur vapor) in the process stream. The TLG-826 allows for more accurate determination of the SO2 and H2S ratios or air demand, the critical parameters for plant control. The optical setup allows for a compact sampling system which can be mounted on top of the process line, virtually eliminating the need for heated sample lines and improving the response time.
The improved analytical method is supplemented by a new sample conditioning system. A new high performance de-mister eliminates most of the sulfur vapor and controls the remaining vapor more accurately than previously possible, resulting in a very compact, extremely accurate and easy to operate analyzer that provides the sulfur plant operator with the information required to increase the performance of the recovery unit, and a significant environmental impact.
Applied Analytics, Inc. is a Boston based manufacturer of spectrophotometer for process monitoring. The analyzers are used for a variety of application in the chemical, petrochemical, pulp & paper, food and pharmaceutical industries. Applied Analytics analyzers are also being used for environmental monitoring.
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