Tangshan Diro Technology Co.,Ltd

E: chinadiro@outlook.com  www.fxdrycoalprep.com

Abstract: Help CGTEE Group,Brazil build a 3.0Mt/a dry coal preparations plant to reduce sulfur content in clean coal, solve the problems of boiler wear of Candiota ii-Phase Power Plant.This is the biggest dry coal beneficiation plant in Latin America market.

Keywords: FGX dry coal separator, fx dry coal preparation, dry coal de-shaling,coal beneficiation,coal upgrading, sulfur reduction, guangue,coal,Brazil coal

DIRO signed the contract of dry coal separation plant with CGTEE power plant in candiota, brazil.Candiota ii phase C power plant project in Brazil,its EPC project of dry coal preparation plant with a contract value of more than US $ 11428500, which is the largest coal preparation project being built in China-Brazil coal preparation projects with capacity 3000000t/a. After completion,sulphur content and ash content of raw coal can be sharply reduced,greatly improve abrasion of boiler, and reduce the emission of dust.Bring considerable economic benefits to the power plant while striving to protect the local ecological environment.

Picture 1: After completion of industrial test, every party participating in the test witness the test results.Cooperation companies:DIRO,Brazilian CGTEE power plant owner,Brazilian CRM coal mine,Electricity power construction,boiler factory etc.

Problems of coal quality & generator sets of CGTEE power plant

The candiota ii phase C power plant project is located in Candeotta, Nandahe Prefecture, Brazil. This project is 350000 kilowatt generator set , and officially generated electricity in 2010. During the operation of the power plant, there have always been the problems:

1.high stone content of raw coal 2. high sulfur content of raw coal 3.lower calorific value than the quality of the designed coal 4.which leads to serious wear of the generator set and seriously affects on the safe and stable operation of the generator set.

Technology Exchange & Industrial Test

In order to solve the problems of poorquality of Coal Combustion in power plants, DIRO conducted technical exchanges with the owner of CGTEE in 2014 and carried out repeated technical argumentation, finally technology of Dry coal separation is proposed to improve quality of raw coal. Moreover,in May 2017,coordinating with the owners of Brazilian CGTEE power plant, Brazilian CRM coal mine, Citic Construction, Shandong Electric Power Construction Co., Ltd., Zhejiang Electric Power Design Institute, Harbin Boiler Factory , DIRO carried out the industrial test(picture 2) of dry coal separation for raw coal supplied to CGTEE power plant in Shenyang, Liaoning Province,China. Under the witness of every parties, the industrial test has achieved satisfactory separating results (picture 1).

 Picture 2:Industrial test was conducted in Shengyang Test Lab

Optimal Solutions of Project Reconstruction 

DIRO designed layout of FX- 48A dry coal separatorfor candiota ii phase C power plant project. 1. Technology of dry coal separation is leading in the world coal industrial.2. FX series dry coal separation system are developed out in 1992,its more mature and reliable, and has been widely used China,South Africa,Texas,Ukrain,Poland,Turkey etc. 3. Supporting facilities are modular design, which is convenient for container transportation and installation. 4. Whole coal preparation plant is equipped with a highly automatic centralized control system.

Advantages of dry coal preparation technology:

1.low investment; 

2.energy saving and environmental protection; 

3.It does not produce slime; 

4. especially suitable for coal deshaling & desulphurization of thermal coal.

Picture 3:this is FX-48,480-500tph,total 4 sets,around 2000tph

Singnificient Projects in South America

Candiota ii phase C power plant project is an important project in China's "Belt and Road" initiative in South America. Brazil's president attended the foundation laying ceremony said:its a model of economic and trade cooperation in the country.

Picture 4: Manufacturing & Quality Control

Therefore, the product quality assurance scheme has been worked out. The manufacture of equipment is supervised by the professionals in the whole process, and strict inspection has been carried out before leaving the factory.

Picture 5: Manufacture and assembly of dry coal separator,all standard is strictly implemented to assure quality.

All the coal preparation equipment has been loaded on Jun,2019, engineer sent to Brazil to provide the most professional technical services for civil construction and equipment installation and commissioning, installation.

Picture 6: Civil construction site, constructer is busy for work to make sure coal preparation plant to be put into operation on schedule.