Reuse of By-Products

03/14/24

The By-Product Produced in Coal-Fired Generator

It will produce some particles while coal is fired by the boiler. The particles with higher weight are fallen to the bottom of the boiler, which called bottom ash. Also, we called the particles with lower weight as fly ash, and these particles are collected by ESP.

In addition, the FGD use high-concentration limestone solution to react with the Sulfur dioxide in flue gas to Calcium sulfite. Then Calcium sulfite will be oxidized to Calcium sulfate by air in the absorption tower, that is plaster.

Reuse of Coal Ash

The coal-fired generators will burn coal and produce coal ash which called bottom ash and fly ash.

1. Bottom ash is rougher, and it looks like sand in gray or black, which is Polygonal shape with pores on the surface. It can use to make brick, building materials etc.

2. Fly ash is a kind of very fine powder colored in gray and it looks like cement. We usually add it to concrete in order to improve constructive property.

3. Fly ash can also be used to replace some of cement for energy saving and carbon reduction.

Reuse of Desulfurized Gypsum

The coal-fired generators burn coal which contains sulfur so that it will produce sulfur oxides in the burned gas. In order to reduce sulfur oxides emissions, TPC has installed fume desulfurization equipment. The sulfur oxides in the flue gas are removed, and the desulfurized gypsum produced, which can be reused in the cement industry and fire-resistant plate industry.

Gypsum Restoring Equipment

Fire-Protection-Board Set Up

1. Storage: Classified according to the characteristics of its main ingredients and placed in a specific place.

2. Clearance: Call the cleaning agency that the environmental protecting agency recognized to remove while waste accumulated to quite a mount.

3. Removal: Delegated to the qualified disposal or clearance agency, according to its kind, characteristics and reusability

Others Business Industrial Waste Processing

The Processing of Business Industrial Waste from Beginning to the End

1. Storage: Classified according to the characteristics of its main ingredients and placed in a specific place.

2. Clearance: Call the cleaning agency that the environmental protecting agency recognized to remove while waste accumulated to quite a mount.

3. Removal: Delegated to the qualified disposal or clearance agency, according to its kind, characteristics and reusability

the manual for the application of coal ash in marine engineering

This manual mainly refers to the "Converter Stone Maritime Engineering Application Handbook" approved by t Industrial Development Bureau, MOEA（IDB） in 2017 and the " Guideline for Effective Use of Coal Ash Mixed Materials in Port Construction" published by the Japan Coal Ash Energy Center (JCOAL) and other related content. The framework was approved by Industrial Development Bureau, MOEA（IDB） on July 12, 2021. In this manual, the types of coal ash used in marine engineering including engineering landfill, embankment, base layer of harbor roads or construction access roads, unreinforced concrete blocks (wave absorbing blocks or blocks) and artificial fish reefs. The main contents are It includes three aspects: materials, environmental protection and engineering , and it also collects many domestic and foreign application cases. Most of the domestic application cases are the results of the company's actual implementation. It describes the research and implementation process in detail, and synthesizes the implementation experience to write relevant chapters of the engineering instructions.

The coal ash product standards and specifications suggested in the manual can be used as a reference for the application of coal ash in marine engineering, which make project sponsors, design and construction units more confident in the application of coal ash in marine engineering, and is conducive to the joint promotion of resource recycling and sustainability utilize and ensure the quality of public construction.