Shandong Jining Power Plant Limestone Pot Feeder Conveying Case

This case study examines the limestone pot feeder conveying system installed at a power plant in Shandong, Jining, designed to address material handling challenges in a coal-fired power generation environment. The system, supplied by headpowder, ensures reliable and efficient transfer of limestone powder from storage to the process line.

Project Background

The power plant required a consistent and controlled feeding solution for its flue gas desulfurization (FGD) process. The existing equipment faced frequent blockages and uneven material flow, leading to operational interruptions and increased maintenance costs. The plant's management sought a durable system capable of handling fine, abrasive limestone powder with minimal downtime.

Customer Challenges

The client encountered several critical issues with the previous conveying setup:

• Frequent plugging of the pot feeder caused by material bridging and moisture variability.
• Inconsistent feed rates affecting the stability of the desulfurization reaction.
• High wear rates on internal components due to the abrasive nature of limestone powder.
• Excessive dust emissions during material transfer, posing safety and environmental concerns.

Solution Overview

headpowder provided a custom-engineered limestone pot feeder conveying system designed to overcome these obstacles. The solution incorporates a sealed, pressurized pot feeder mechanism that creates a controlled material flow path, eliminating bridging and ensuring continuous operation. The system features wear-resistant linings and a dedicated dust collection port to meet workplace safety standards. An automated control interface allows operators to adjust feed rates in real time, supporting stable process conditions.

Key System Components

The conveying system comprises a storage hopper with vibratory discharge, a pressure-rated pot feeder vessel, a pneumatic conveying pipeline, and a buffer receiver at the discharge point. Each component is selected for compatibility with fine, dry powders and to withstand the mechanical stresses of continuous operation.

Operational Benefits

After commissioning, the plant reported a significant reduction in unplanned downtime. The consistent material flow improved the efficiency of the FGD process, while the sealed design minimized dust leakage. Maintenance intervals extended due to the use of abrasion-resistant materials and simplified access for inspection. The system also demonstrated energy savings through optimized air consumption during conveying cycles.

Project Outcome

The limestone pot feeder conveying system from headpowder has been in stable service at the Shandong Jining power plant, supporting round-the-clock desulfurization operations. The client acknowledged the reliability and ease of integration into their existing infrastructure, contributing to overall plant availability and compliance with emission standards.