SLDL2560 Mud-water Interface Meter

Solving the Measurement Problem of Petrochemical Mud-The Successful Application of SLDL2560 SonarSilt Interface Meter in Oil-water Sedimentation Tank

1. Industry Pain Points: The "Intractable Disease" of Measurement in Petrochemical Oil-Water Sedimentation Tanks

As the core unit of oily wastewater treatment in the petrochemical industry, oil-water sedimentation tanks are responsible for critical tasks such as sludge-water separation and sludge concentration. The precise measurement of sludge interfaces directly impacts treatment efficiency, equipment lifespan, and environmental compliance. However, the extreme operating conditions in this scenario have long rendered traditional measurement equipment "incompatible with the environment":

Medium stratification: The oil-water sedimentation tank contains a sludge-water mixture that gradually becomes turbid from top to bottom. The sediment at the bottom is in a virtual sludge state, with extremely indistinct stratification boundaries. Traditional ultrasonic equipment is prone to measurement distortion due to insufficient signal penetration.

The field disturbance is intense: the sludge scraper passes under the sensor every 2-3 minutes, and the sludge discharge occurs every 60 minutes. Mechanical disturbances cause frequent changes in the medium state, with ordinary equipment data fluctuations exceeding ±30cm.

Severe environmental conditions: The medium contains oil, high alkalinity, and high suspended solids, operating in Zone 20 hazardous areas. This imposes stringent requirements on equipment for corrosion resistance, explosion-proofing, and sealing performance. Most domestic brands frequently experience failures due to inadequate protection.

Traditional equipment fails: While imported brands (e.g., E+H) can barely function, their measurement deviations exceed ±20cm. Domestic equipment struggles to capture reliable echoes, failing to meet the requirements for sludge discharge regulation and environmental monitoring.

These issues may cause delayed or excessive sludge discharge from sedimentation tanks, which not only increases treatment costs but also risks pipeline blockages, equipment wear, and even environmental compliance violations.

 

2. Breakthrough Solution: SLDL2560 SonarSilt Targeted Technological Innovation

To address the measurement challenges in petrochemical oil-water sedimentation tanks, the SDLD2560 SonarSilt Sludge Interface Analyzer delivers a scenario-specific solution, featuring 'sonar-accurate sensing + anti-interference dedicated design'.

(1) Core Technology Highlights

High-frequency sonar pulse technology enables precise identification of oil-bearing turbid water layers, penetrating to the mud interface. By analyzing signal reflection intensity variations, it accurately distinguishes between clear liquid layers, sediment layers, and mud layers. Even in virtual mud conditions, effective echoes are captured with a measurement accuracy of ±1 cm.

Anti-interference specialized design: Equipped with built-in mechanical disturbance filtering algorithm, it intelligently identifies interference signals generated by sludge scraping and discharge operations, achieving 80% data stability improvement and resolving frequent switching issues.

Durable Performance in Harsh Environments: The transducer utilizes corrosion-resistant materials including PU/PTFE/316L/ceramic, with full-seal protection (IP67+ rating). It withstands temperatures from-40°C to 90°C and pressures down to-0.022MPa, while resisting high-alkaline environments and oil/gas erosion. Fully compatible with hazardous conditions in Petrochemical Zone 20.

Intelligent and convenient operation and maintenance: Supports 4~20mA+HART two-wire/four-wire systems, Modbus, and other communication protocols, seamlessly integrating with DCS systems with data transmission latency ≤1s. An optional external automatic foam cleaner reduces oil contamination and suspended particle adhesion, lowering manual maintenance frequency.

(2) Petrochemical Scenario-specific Configuration

Measurement range: 0.25~10m, covering the conventional depth requirements of petrochemical oil-water sedimentation tanks

Signal processing: Built-in temperature compensation algorithm corrects the influence of medium temperature change on sound velocity, ensures measurement consistency under different working conditions;

Installation method: Supports support mechanism installation, avoids the track of the sludge scraper, adapts to complex sedimentation tank structures, and requires no tank modification with simple construction.

 

3.Successful Practice: Application Case of Oil-water Sedimentation Tank in Petrochemical Plant

(1) Application Overview

Application scenario: A high-efficiency oil-water sedimentation tank (oil-containing wastewater treatment unit) in a petrochemical plant's No.3 ethylene unit, with a sludge-water mixture as the medium and layered sludge. The sludge scraper passes under the sensor every 2-3 minutes, with a sludge discharge cycle of 60 minutes per cycle.

Background: The client had tested multiple domestic and international mud interface analyzers, but all failed to penetrate turbid water or provide reliable measurements due to poor interference resistance, resulting in inaccurate readings and data fluctuations. The SDLD2560 was thus introduced as a replacement solution.

(2) Key Application Outcomes

The measurement accuracy has achieved a breakthrough: Under working conditions with indistinct sludge-water stratification and suspended solids concentration ranging from 1000 to 6000 mg/L, the SDLD2560 accurately identifies the sludge interface, maintaining a measurement deviation within ±1 cm. This represents a 95% improvement over traditional equipment (deviation ±20–50 cm), providing reliable data for sludge discharge regulation.

The anti-interference capability significantly outperforms competitors: during operation and sludge discharge, the data fluctuation remains ≤3cm with no invalid echoes, whereas the original E+H equipment exhibited fluctuations exceeding ±25cm and suffered repeated data loss.

Environmental adaptability compliance: The fully sealed design effectively resists corrosion from oily and highly alkaline media, achieving one month of fault-free operation. Maintenance frequency was reduced from weekly to monthly, with labor costs decreasing by 75%.

Win-win of environmental protection and economic benefits: Based on precise sludge interface data, the sludge discharge cycle is optimized to reduce chemical waste caused by excessive sludge discharge, resulting in a monthly cost savings of 8%~12%. Simultaneously, it prevents equipment wear due to sludge accumulation, extending the service life of sludge scrapers and pump bodies by over 30%.

 

4. Core Advantages: Comparison of SDLD2560 with Traditional Equipment

Contrast dimension	SLDL2560 SonarSilt Interface Meter	Traditional equipment (conventional ultrasound)
certainty of measurement	±1cm (layered fuzzy condition)	±20~50cm (sensitive to medium concentration)
capacity of resisting disturbance	Built-in mechanical disturbance filtering algorithm, suitable for sludge scraper interference	No dedicated anti-jamming design, resulting in abrupt data transitions
environmental adaptation	Corrosion-resistant material with full sealing, oil and alkali resistant, explosion-proof compliant	Inadequate sealing performance, susceptible to damage from oil/gas and corrosion
maintenance cost	Optional automatic cleaning, with monthly maintenance	Calibration requires frequent wiping, with weekly maintenance ≥1 time
data reliability	Effective echo rate above 99%	Effective echo rate <70%, frequent data loss

 

 

5. Promotion Value: Full-scenario Adaptation Beyond Oil-water Sedimentation Tanks

The successful implementation of the SLDL2560 SonarSilt system at a petrochemical plant has proven its reliability under extreme operating conditions, demonstrating its versatility for various slurry separation applications across the petrochemical industry.

Applicable units: primary sedimentation tank, secondary sedimentation tank, sludge thickening tank, high-efficiency sedimentation tank, etc.

Application scenarios: oil-containing sludge treatment tanks in refineries, chemical intermediate wastewater sedimentation tanks, and petrochemical wastewater reuse pretreatment tanks.

Core Value: Empowers enterprises to achieve precise monitoring of sludge interfaces, optimize process operations, reduce O&M costs, and comply with environmental emission standards such as GB31570-2015, providing technical support for the green and low-carbon development of the petrochemical industry.

 

6. Cooperative Consulting: Customized Mud Measurement Solutions

The SLDL2560 SonarSilt Interface Meter has been rigorously certified by major petrochemical enterprises including CNPC, Sinopec, and a leading petrochemical company. With its outstanding performance in interference resistance, harsh environment tolerance, and high precision, it has become the preferred solution for mud measurement in the petrochemical industry. We provide end-to-end services covering condition assessment, installation, data integration, and post-sales maintenance, ensuring swift deployment and stable operation of the equipment.

For on-site petrochemical application videos, detailed technical specifications, condition matching solutions, or technical exchanges, feel free to contact us anytime!

- Empowering petrochemical environmental protection with sonar precision, the SDLD2560 SonarSilt helps you build a new green production ecosystem!