The Stringent Challenges of Modern Coal Chemical Industry
China's energy endowment of "abundant coal, scarce oil, and limited gas" determines the core position of the coal chemical industry in the national energy security strategy. As coal chemical industry gradually transforms into modern coal chemical industry, production processes become increasingly complex, placing stringent demands on the accuracy, safety, and stability of process control.
In modern coal chemical processes, coal chemical plants operate under complex conditions, experience large temperature ranges, and encounter highly corrosive media, placing extremely high demands on differential pressure and level measurement equipment. The sealed nitrogen pipeline and inlet differential pressure of the aerospace furnace (HT-L) with the coal mill are core operating conditions and monitoring points for ensuring the safe and stable operation of the pulverized coal preparation unit.
In coal mill sealing air differential pressure/sealing nitrogen-primary air differential pressure measurement, the high-pressure side operates at a normal temperature of 60°C for sealing nitrogen, while the low-pressure side operates at a high-temperature drying hot air operating temperature at the coal mill inlet of 365°C. Traditional dual-flange differential pressure transmitters can only select one type of oil-filled gas, which cannot meet the measurement needs of both the high-pressure side (normal temperature) and the low-pressure side (high temperature). The Rosemount 3051S electronic remote transmission (ERS) system, combined with a wide-temperature transmitter, perfectly solves the pain points of traditional dual-flange measurement.
Rosemount Solution
The Rosemount 3051S electronic remote transmission system (ERS) replaces the dual-flange differential pressure level transmitter for level measurement. The high and low pressure sides can flexibly select the appropriate sealing oil filling for their respective operating conditions. The low-pressure side uses the Rosemount 3051S wide-temperature transmitter to handle high-temperature media. Its dual-diaphragm design is suitable for process temperatures up to 410°C and ambient temperatures down to -75°C, eliminating the need for additional pressure lines and heating systems, thus saving installation and maintenance costs.
Rosemount 3051S Electronic Remote Transmission System (ERS)
More accurate and repeatable differential pressure measurement
Simplified installation without capillary tubes or pressure taps
Shorter response time
Less maintenance
Rosemount 3051S Wide Temperature Transmitter
Dual diaphragm design allows for the application of two different types of oil filling in the system
High-temperature oil filling is suitable for process temperatures up to 410°C, while low-temperature oil filling is suitable for ambient temperatures down to -75°C
Direct installation, eliminating the need for additional pressure taps and heating systems, saving on installation and maintenance costs
As the "sensory nerves" of industrial automation control systems, Rosemount's pressure transmitter solutions can capture pressure parameters in real time under extreme conditions such as high temperature, high pressure, and strong corrosion, providing reliable data support for production control.
No matter how harsh the operating conditions, temperature and pressure measurement remains uncompromising. Say goodbye to high and low temperature interference. Rosemount's wide temperature range + electronic remote transmission "twin stars" work together for precise measurement and control, safeguarding every differential pressure line for the stable operation of coal chemical and aerospace furnaces.