How to deal with boiler slag in power plants

How to deal with boiler slag in power plants

With the continuous development of China's industry, the power industry has become one of the important pillars of the national economy. However, a large amount of waste slag is generated during the operation of power plants, among which furnace slag is a relatively common type of waste slag. So, how to deal with boiler slag in power plants? This article will provide you with a detailed introduction.

1、 Types of slag

slag refers to an amorphous or semi crystalline substance formed during industrial production due to high-temperature melting. According to its source and composition, slag can be divided into various types, such as blast furnace slag, converter slag, electric furnace slag, coke oven slag, etc. Among them, power plant boiler slag belongs to a type of electric furnace slag.

2、 Characteristics of Boiler Slag in Power Plants

The slag of power plant boilers is mainly composed of ash after combustion and oxides generated during combustion. Its main characteristics are as follows:

1. Fine particle size: The particle size of boiler slag in power plants is generally between 0.1 and 1mm, which is relatively small.

2. Low carbon content: The carbon content in the slag of power plant boilers is generally below 2%.

3. Low sulfur content: The sulfur content in the slag of power plant boilers is generally below 1%.

4. High moisture content: The moisture content in the slag of power plant boilers is generally above 10%.

3、 Treatment methods for boiler slag in power plants

The treatment methods for boiler slag in power plants mainly include the following:

1. Landfill method: Landfill the slag in a designated site, cover the soil, and form a layer of slag soil pile. This method is suitable for situations where the content of harmless substances in slag is low.

2. Recycling method: Recycling slag, such as brick making, sand making, stone making, etc. This method can reduce environmental pollution and achieve resource reuse.

3. Grinding method: The slag is ground to form a micro powder substance, which is used to manufacture building materials such as cement and concrete.

4. Acid washing treatment method: The slag is subjected to acid washing treatment to remove harmful substances such as heavy metals. This method is suitable for situations where the content of harmful substances in slag is high.

4、 Treatment steps of boiler slag in power plants

The treatment steps for boiler slag in power plants are as follows:

1. Collection of slag: During the operation of the boiler, collect the slag into the designated collection equipment.

2. Slag transportation: The collected slag is transported to the treatment site through transportation equipment.

3. Treatment of slag: Select appropriate treatment methods based on the characteristics and treatment requirements of the slag.

4. Storage of slag: Store the processed slag for subsequent utilization or landfill treatment.

5、 Summary

The treatment of boiler slag in power plants is an essential part of the production process. Properly handling slag can not only reduce environmental pollution, but also achieve resource reuse. In practical operation, appropriate treatment methods should be selected based on the characteristics and treatment requirements of the slag.

How to deal with boiler slag in power plants