09,22,2026 37 views
1、 DuPont Stratco Sulfuric Acid Alkylation Plant
Application Scenario:
90% of global sulfuric acid alkylation facilities use DuPont Stratco technology, and MPR E-Scan is widely used for online monitoring of sulfuric acid concentration. In the acid separation tank, the instrument detects the concentration of waste acid in real time to ensure that it reaches the critical concentration for regeneration before being sent for regeneration treatment, avoiding excessive consumption.
Technical features and benefits:
Anti interference capability: The sensor uses Alloy 20 acid resistant alloy, which is not affected by acid soluble oil, bubbles, and medium color, and the accuracy can reach ± 0.05%.
Acid consumption control: By continuously monitoring changes in acid flow, acid consumption is significantly reduced. For example, in a certain device, acid consumption is reduced by more than 15%, saving millions of dollars in annual costs.
Process stability: Avoid acid dominance, ensure smooth alkylation reaction, and reduce product quality issues caused by concentration fluctuations.
2、 Jiangsu Hengli Petrochemical and Shenghong Refining Project
Application Scenario:
These two 20 million ton/year integrated refining and chemical projects use DuPont technology, MPR E-Scan Trouble series for waste acid regeneration (SAR) devices, with a measurement range covering 98-102% sulfuric acid concentration, combined with density sensors to achieve high-precision control.
Technical features and benefits:
High temperature adaptability: The sensor can withstand temperatures up to 150 ℃, meeting the high-temperature requirements of SAR devices, and can operate stably for a long time without the need for component replacement.
Regeneration optimization: Real time monitoring of smoke sulfuric acid concentration to ensure maximum efficiency of waste acid regeneration, reduce regeneration energy consumption by about 10%, and lower environmental pollution risks.
Data integration: Through remote transmission of 4-20mA signals to the DCS system, automation control and historical data traceability are achieved, improving management efficiency.
3、 CNOOC Huizhou Refinery (DuPont Technology Biaogan in China)
Application Scenario:
As the first large-scale alkylation unit in China to adopt DuPont Stratco technology, MPR E-Scan is used for online analysis of sulfuric acid concentration, replacing traditional nuclear radiometers and Coriolis flowmeters.
Technical features and benefits:
Non consumable design: The light source has a lifespan of up to 100000 hours, and the recyclable desiccant does not need to be replaced, reducing maintenance costs by more than 70%.
Quick response: The critical angle total reflection technology has a response time of less than 500ms, adjusts the acid concentration in real time, and increases the reaction conversion rate by 3-5%.
Environmentally friendly: Avoiding safety hazards of nuclear radioactive instruments and meeting environmental protection requirements.
4、 Sinopec Anqing Petrochemical (Typical Case of Complex Operating Conditions)
Application Scenario:
In the sulfuric acid alkylation unit, MPR E-Scan is used to monitor the concentration of 93% dry acid and 98% absorbed acid, and output signals to the PID controller to control the opening of the regulating valve.
Technical features and benefits:
Automatic compensation function: Built in temperature sensor and linear database, automatically corrects the influence of temperature on measurement, ensuring stable accuracy under different working conditions.
Maintenance free operation: The instrument has been running continuously for 5 years without any malfunctions, reducing the frequency of manual calibration and reducing the annual maintenance time from hundreds of hours to less than 20 hours.
Process optimization: The control accuracy of dry acid concentration has been improved to ± 0.1%, the fluctuation range of alkylated oil octane number has been reduced, and the product quality has been significantly improved.
5、 General solution for waste acid regeneration (SAR) device
Application Scenario:
MPR E-Scan is used in multiple SAR devices worldwide to monitor the concentration of waste acid. For example, in a Middle Eastern refinery, real-time data was used to adjust regeneration parameters, resulting in a 20% increase in waste acid treatment capacity.
Technical features and benefits:
Wide range coverage: Supports measurement of 98~102% sulfuric acid concentration, meeting the requirements of special working conditions such as smoke sulfuric acid.
Corrosion protection: Alloy 20 material sensor is resistant to strong acid corrosion, with a lifespan of over 10 years, far exceeding the 3-5 years of traditional instruments.
Environmental compliance: Ensure that waste acid regeneration meets emission standards, such as reducing sulfur dioxide emissions by 25% in a certain device, in compliance with the EU REACH regulation.
6、 Technology Extension: Deep Integration with DCS System
Typical case:
A certain US refinery integrates MPR E-Scan with Honeywell DCS system to achieve a "monitoring analysis control" closed-loop. When the acid concentration deviates from the set value, the system automatically adjusts the acid circulation flow rate, reducing the response time to within 1 second and improving product quality stability by 30%.
Integration advantages:
Intelligent management: Real time uploading of data to the cloud through OPC protocol, combined with big data analysis to predict equipment failures. For example, predictive maintenance of a certain device can reduce downtime by 40%.
Remote diagnosis: Support engineers to remotely access instrument parameters. For example, a multinational enterprise can solve over 90% of on-site problems through remote services, reducing travel costs by 80%.
summary
The application of MPR E-Scan online refractometer in oil refining alkylation units has formed a mature solution, and its characteristics of no consumables, no maintenance, and high accuracy have been verified globally. From the standardized process of DuPont Stratco to complex SAR devices, from large-scale refining projects in China to international Biaogan enterprises, this instrument brings significant economic and environmental benefits to enterprises by accurately controlling acid concentration and optimizing process parameters. In the future, with the advancement of Industry 4.0, its deep integration with AI and the Internet of Things will further enhance the intelligence level of the refining industry.
