Efficient and clean utilization of coal is the foundation for the healthy development of my country's economy. Circulating fluidized beds (CFB) have significant advantages in low-calorific value fuels and are an indispensable part of green coal. With the support of the 863 and Science and Technology Support Plan, more than 20 units including Tsinghua University, Dongguo, and Shenhua have worked closely together. After more than ten years of hard work, they have achieved a series of original results, formed a key technology system for supercritical CFB boilers, and successfully developed The world's largest 600MW supercritical CFB boiler has developed system integration technology, control technology, key auxiliary machines and simulation machines based on mechanism models, forming a safe operation technical system and maintenance and maintenance procedures. These innovative results were used in the world's first 600MW supercritical CFB demonstration project and have been verified by practice. All indicators are superior to other supercritical CFBs in the world. The project was authorized for 33 invention patents, 70 utility models, and 6 software copyrights; 234 papers were published. This project is the world's first. It has promoted the development of international CFB combustion technology and improved the international competitiveness of my country's CFB boilers. 600MW supercritical CFB has begun to move to Europe and Southeast Asia. The key technologies developed have been promoted for the development of 350MW supercritical CFB boilers, and orders for 50 units have been formed. New profits in the past three years have increased by 259 million yuan. An appraisal jointly organized by China Society of Electrical Engineering and China Machinery Federation concluded: "The results of this project are completely independently developed, with significant innovation in key technologies, reasonable equipment system design, excellent manufacturing quality, and safe and stable operation. The research results have reached the international leading level.

Preliminary application demonstration situation:

These innovative results were used in the world's first 600MW supercritical CFB demonstration project and have been verified by practice. All indicators are superior to other supercritical CFBs in the world. This project is the world's first. It has promoted the development of international CFB combustion technology and improved the international competitiveness of my country's CFB boilers. 600MW supercritical CFB has begun to move to Europe and Southeast Asia. The key technologies developed have been promoted for the development of 350MW supercritical CFB boilers, and orders for 50 units have been formed.

Status of R & D funding obtained: ■ "863" ■ National Science and Technology Support Plan

Application situation or application prospects: According to my country's coal production situation, my country has a market capacity of about 50 units of 600MW supercritical CFB; as the only country in the world currently with 600MW supercritical CFB boiler technology, my country has begun to move to Europe and Southeast Asia, and the international market is about 100 units. The key technologies developed are promoted for the development of 350MW supercritical CFB boilers. It is estimated that the domestic market capacity of 350MW supercritical CFB boilers will be 200 units, and the international capacity will be approximately 300 units.