Laser as the Boundary, Safeguarding the Security Line

Guoke Hanhai Establishes a Toxic Gas Defense Line for Jinan Refining & Chemical

Between the factory areas of Sinopec Jinan Refining & Chemical Co., Ltd., several overhead pipelines stretch across public roads, transporting industrial gases containing hydrogen sulfide (H₂S) and methane (CH₄) every day. The roads below are bustling with constant traffic and pedestrians. In the event of a leak, the rotten - egg smell of hydrogen sulfide might be the final warning. This highly toxic gas can be instantly fatal at high concentrations, while methane can trigger an explosion upon contact with an open flame. Guoke Hanhai Laser Technology has built an invisible "laser defense line", forming an around - the - clock non - stop safety barrier for this section of the road.

1. Project Background: The "Invisible Bomb" at the Factory Boundary

The two factory areas of Jinan Refining & Chemical are separated by a public road, and the overhead pipelines connecting them have become potential risk points:

Dual Threat of High Toxicity and Flammability: Hydrogen sulfide in the pipelines is a potent neurotoxin. At low concentrations, it irritates mucous membranes; at high concentrations, it can cause coma and even death. Although methane is non - toxic, it is highly prone to explosion. When its concentration ranges from 5% to 15%, it may detonate upon encountering sparks.

Traditional Monitoring Falls Short: The point - type sensors installed on both sides of the road have a limited monitoring range, leaving blind spots under the pipelines unmonitored. Moreover, these sensors are susceptible to interference from weather conditions and cross - gases, leading to frequent false alarms that keep operation and maintenance personnel overwhelmed.

Public Safety Is of Utmost Importance: A large number of pedestrians and vehicles pass under the pipelines every day. If gas leaks and spreads, the consequences will be catastrophic. In accordance with work safety requirements, it is imperative to establish a monitoring system capable of full - road coverage and accurate leak detection.

2. Solution Deployment: 11 Laser Devices Weave a Three - Dimensional Protection Network

Targeting the key pain points of Jinan Refining & Chemical, Guoke Hanhai deployed 11 sets of fixed reflective laser gas telemetry instruments, constructing a "ground - air coordinated" monitoring network.

Hydrogen Sulfide Monitoring: The "Toxic Gas Catcher" for the 500 - Meter Road Section

In the area of the second catalytic dry gas and liquefied gas desulfurization unit, 5 sets of laser devices are installed in pairs, forming a ground - based "optical barrier". The wavelength of the laser they emit is precisely matched to the absorption spectrum of hydrogen sulfide, enabling the capture of even minor leaks within 100 meters. The system can trigger an alarm within 1 second even for ppm - level gas seeping from pipeline joints, which is more than 10 times faster than the speed at which humans can detect the gas by smell.

Methane Monitoring: The "Explosion - Proof Sentinel" for the 1000 - Meter Pipeline Gallery

The 6 sets of equipment deployed in the flare gas transmission pipeline gallery area are even more efficient. Among them, 2 laser telemetry instruments designed for methane can achieve a monitoring distance of up to 1000 meters. Installed on the upper and lower layers of the pipeline gallery, the laser beams extend parallel to the pipelines, conducting real - time monitoring like scanners. The moment methane leaks, slight changes in laser intensity will be detected instantly, preventing explosion hazards caused by gas accumulation.

Data cables of all devices are connected to the catalytic operation room via 24 - core optical fibers, and power supply cables are protected by explosion - proof enclosures to ensure stable operation in the complex industrial environment. On the screens of the monitoring center, the real - time gas concentration along the pipelines is clearly visible. When the concentration exceeds the standard, an audible and visual alarm is triggered immediately, and the leak location can be pinpointed to the meter.

3. Technical Highlights: Why Laser Outperforms Traditional Equipment

The outstanding performance of this system lies in three core advantages:

Zero False Alarms: Laser possesses an exceptional ability to "fingerprint" gases and is not interfered with by water vapor, dust, or other gases. During tests at Jinan Refining & Chemical, the system accurately identified hydrogen sulfide and methane even amid other industrial waste gases nearby, completely resolving the issue of traditional equipment triggering alarms at the slightest provocation.

Full - Range Coverage: With a monitoring distance ranging from 100 meters to 1000 meters, the system covers blind spots that were previously overlooked, such as the areas under the pipelines and gaps in the pipeline galleries, achieving all - round protection.

Rapid Response: The 1 - second alarm response time secures valuable time for emergency handling. For instance, upon detecting a hydrogen sulfide leak, the monitoring center can immediately link with the road warning system to guide pedestrians and vehicles away from the dangerous area.

4. Safety Value: From "Factory Protection" to "Public Reassurance"

Since the project was put into use, the safety of Jinan Refining & Chemical's factory boundaries has been upgraded in three significant aspects:

Early Risk Detection: After a pipeline maintenance in 2024, the system detected a minor hydrogen sulfide leak at a flange joint. Maintenance personnel promptly addressed the issue, preventing the gas from spreading to the nearby road.

More Efficient Management: The laser equipment is maintenance - free and has a long service life, reducing the annual operation and maintenance workload by 90%. This allows safety officers to shift their focus from constant equipment monitoring to formulating emergency plans.

Greater Public Confidence: Pedestrians on the road may not see the laser beams, but this system silently safeguards their safety, serving as a bridge of trust between the enterprise and society.

5. Industry Insight: Laser Technology Redefines "Factory Boundary Safety"

The practice of Jinan Refining & Chemical has set a new model for factory boundary monitoring in the petrochemical industry. When industrial facilities are adjacent to public areas, traditional "in - fence protection" is no longer sufficient. It is essential to extend the safety line to the boundaries through technological means. Guoke Hanhai's laser monitoring technology, featuring high precision, rapid response, and full - range coverage, enables the harmonious coexistence of high - risk industrial zones with urban life.

In the future, this system will be integrated into Jinan Refining & Chemical's smart safety platform, incorporating AI analysis to predict gas leak trends. We firmly believe that true safety not only lies in being able to "prevent risks effectively" but also in being able to "predict hazards in advance". This is exactly the "responsibility report" that Guoke Hanhai has delivered through its laser technology.