UNITE Large-Caliber Automatic Self-Cleaning Filters Support Biomass CHP and Thermal Energy Storage Project in Jinzhong, China

UNITE Filtration has successfully completed the manufacturing and pressure testing of multiple customized large-caliber automatic self-cleaning filters for the Jinzhong Chengnan Biomass Combined Heat and Power (CHP) and Thermal Energy Storage EPC Project. The equipment has been officially shipped to the project site to support an integrated renewable energy engineering project featuring biomass cogeneration and seasonal thermal energy storage.

Designed for high-flow circulating water systems under demanding industrial operating conditions, UNITE's automatic self-cleaning filters provide continuous online filtration to protect critical heat exchange and energy conversion equipment, helping ensure the long-term stability and reliability of the integrated thermal energy system.

1. Project Overview: Biomass CHP and Seasonal Thermal Energy Storage

The Jinzhong Chengnan Biomass CHP and Thermal Energy Storage Project is a regional renewable energy utilization initiative integrating biomass power generation, seasonal geothermal heat storage, flue gas waste heat recovery, and centralized heating infrastructure.

The project includes:

• 2 × 100 t/h circulating fluidized bed boilers

• 2 × 7.5 MW back-pressure steam turbine-generator sets

• Large-scale seasonal geothermal heat storage and extraction systems

• Flue gas waste heat recovery systems

• Centralized heating substations

• Total heating capacity of 194.68 MW

UNITE's large-caliber automatic self-cleaning filters are installed in the circulating water pipelines of the heating network and geothermal thermal storage and extraction systems.

Their primary function is to remove sand, rust, suspended solids, and pipeline corrosion particles from circulating water, helping protect critical equipment such as heat exchangers, heat pump units, circulating water pumps, and nozzles.

By providing reliable continuous filtration, the equipment helps reduce the risk of system blockage, abrasion, and unplanned maintenance, supporting stable operation of the overall heating and power generation system.

2. UNITE Large-Caliber Automatic Self-Cleaning Filter Configuration

The project utilizes customized brush-type automatic self-cleaning filters engineered for large-flow circulating water applications.

Key equipment specifications include:

The customized configuration is designed to accommodate the demanding operating conditions of large-scale thermal energy storage and circulating water systems.

3. Addressing Key Challenges in High-Flow Thermal Energy Systems

High Circulating Flow Rates and Particulate Contamination

The geothermal thermal storage and extraction system operates at a maximum circulating flow rate of 5,200 m³/h.

Water carrying sand and solid impurities can cause blockage, fouling, and wear in heat exchangers and heat pump plates, potentially reducing heat transfer efficiency and increasing maintenance requirements.

UNITE's large-caliber self-cleaning filters are designed to continuously capture particulate contaminants, helping maintain cleaner circulating water and protect downstream equipment.

Continuous Operation Requirements

Biomass CHP and thermal energy storage projects require reliable year-round operation to maintain heating and power generation performance.

Conventional filtration equipment may require shutdowns and manual disassembly for cleaning, potentially disrupting the process.

UNITE's automatic self-cleaning filters utilize differential pressure and timer-based triggers to initiate online cleaning. The brush-type cleaning mechanism removes accumulated impurities from the filter screen while maintaining continuous fluid flow.

This design helps reduce the need for shutdowns and manual cleaning interventions.

Outdoor Operation in Northern China's Climate

The project is located in northern China, where outdoor equipment must withstand demanding seasonal temperature conditions.

The filter housing is constructed from Q355B carbon steel with anti-corrosion treatment, while the electrical control system supports the project's requirements for local control, alarm output, and DCS integration.

These design features help adapt the filtration equipment to the environmental and operational conditions of the project site.

4. Expected Operational Benefits

Following installation and commissioning, UNITE's large-caliber automatic self-cleaning filters are designed to deliver the following operational benefits:

Continuous Online Filtration

Automatic cleaning and blowdown operations help maintain filtration performance without requiring routine shutdowns for filter element cleaning.

Reduced Maintenance Requirements

The automated cleaning mechanism reduces the need for manual disassembly and cleaning, helping lower routine maintenance workload.

Protection of Critical Equipment

By intercepting sand, rust, and suspended solids, the filters help protect heat exchangers, heat pumps, circulation pumps, valves, and nozzles against blockage and wear.

Improved System Reliability

Stable circulating water filtration helps reduce the risk of fouling-related problems and unplanned maintenance, supporting reliable heating and power generation operations.

Intelligent Control Integration

PLC-based local control, alarm outputs, and DCS integration capabilities facilitate centralized monitoring and coordinated operation within the project's control system.

The equipment is designed to support 24-hour unattended operation, subject to the project's control configuration and operating conditions.

5. UNITE: Customized Industrial Filtration Solutions for Energy Applications

With more than 20 years of experience in industrial filtration, UNITE Filtration provides customized filtration and separation equipment for the petrochemical, chemical, energy, environmental protection, and industrial water treatment sectors.

The successful delivery of multiple large-caliber automatic self-cleaning filters for the Jinzhong Chengnan Biomass CHP and Thermal Energy Storage Project demonstrates UNITE's engineering and manufacturing capabilities in high-flow industrial water filtration.

Through customized equipment design, robust construction, automatic online cleaning, and intelligent control integration, UNITE continues to support the reliability and efficiency of large-scale industrial energy systems.

UNITE remains committed to providing dependable filtration solutions for renewable energy, thermal energy storage, biomass cogeneration, and other demanding industrial applications.

Looking for a large-caliber automatic self-cleaning filter for your circulating water system?

Contact UNITE Filtration to discuss your flow rate, operating pressure, water quality, filtration requirements, and customized equipment configuration.

Website: https://www.unitefilter.com/

Email: ruby@unitefilter.com