The 20TH limestone desulfurization grinding production line in a coal-fired power plant

Coal-fired power plants are a significant source of electricity worldwide, but they also contribute to environmental pollution through the emission of sulfur dioxide (SO2). To combat this issue, limestone desulfurization is a widely adopted method.

The 20TH Limestone Desulfurization Grinding Production Line:

1. Overview:

The 20TH limestone desulfurization grinding production line is designed to process limestone into a fine powder, which is then used in the flue gas desulfurization (FGD) process. This production line is capable of handling 20 tons of limestone per hour, making it suitable for medium to large-scale power plants.

2. Equipment Components:

The limestone desulfurization grinding production line typically consists of the following key equipment:

a. Jaw Crusher: The raw limestone is first crushed into smaller pieces by the jaw crusher to facilitate the grinding process.

b. Bucket Elevator: After crushing, the limestone pieces are lifted to the desired height using a bucket elevator for further processing.

c. Vibrating Feeder: The vibrating feeder ensures a steady supply of limestone to the mill, maintaining a consistent production rate.

d. Grinding Mill: The grinding mill, often a vertical roller mill or ball mill, is responsible for grinding the limestone into a fine powder. The mill's design allows for efficient grinding with minimal energy consumption.

e. Classifier: The classifier separates the fine limestone powder from coarser particles. It ensures that only particles of the desired fineness proceed to the next stage.

f. Dust Collector: The dust collector captures the fine limestone powder, preventing it from escaping into the atmosphere and ensuring a clean working environment.

g. Fan: The fan provides the necessary airflow for the transportation of limestone powder and the exhaust of clean air.

3. Working Principle:

The limestone desulfurization grinding production line operates as follows:

a. Crushing: The raw limestone is crushed by the jaw crusher into pieces that can be easily handled by the mill.

b. Grinding: The crushed limestone is fed into the grinding mill, where it is ground into a fine powder by the rotating grinding media (balls or rollers).

c. Classification: The classifier separates the fine powder from the coarser particles, allowing only the fine powder to proceed.

d. Collection: The fine limestone powder is collected by the dust collector and stored for use in the FGD process.

e. Desulfurization: The collected limestone powder is injected into the flue gas stream, where it reacts with SO2 to form gypsum, effectively reducing the sulfur dioxide emissions.

4. Benefits:

a. Environmental Protection: The limestone desulfurization process significantly reduces SO2 emissions, contributing to the reduction of acid rain and improvement of air quality.

b. Efficient Grinding: The production line ensures a high output of fine limestone powder, which is essential for effective desulfurization.

d. Low Maintenance: The production line is designed for durability and ease of maintenance, reducing downtime and operational costs.

d. Low Maintenance: The production line is designed for durability and ease of maintenance, reducing downtime and operational costs.

The 20TH limestone desulfurization grinding production line is a vital component in the efforts to reduce pollution from coal-fired power plants. Its efficient and reliable operation not only contributes to environmental protection but also ensures the sustainability of energy production. With the continuous advancement of technology, such production lines are becoming more efficient and cost-effective, playing a crucial role in the global transition towards cleaner energy solutions.