a Billet/Bar Pusher Furnace with a Capacity of 35t/H

• Customization: Available
• After-sales Service: One Year Guarantee
• Warranty: One Year Guarantee
• Model NO.: Pusher Type Furnace
• Customized: Customized
• Condition: New
• Power Source: Hydraulic/Electric/Gas
• Automatic Grade: Fully Automatic/Semi-Automatic
• Type: Steel Rolling Reheating Furnace
• Certification: ISO, CE
• Production: 35t/H; Pusher-Type Furnace
• Type of Regeneration: Double-Sided Heating
• Furnace Type 1: End Charge of Steel Pusher; Side Discharge of Ejec
• Furnace Type 2: Furnace Bottom Water Pipe Vaporization Cooling
• Furnace Type 3: Billet/Rectangular Billet Reheating Furnace
• Transport Package: Frame Packaging/Woodencase Packaging
• Specification: Customized
• Trademark: PRIME
• Origin: China
• HS Code: 8417100000
• Production Capacity: 20sets/Year
• Package Size: 1500.00cm * 2000.00cm * 500.00cm
• Package Gross Weight: 15000000.000kg

Product Description

Product Description

 

1 Preface
1.1 Overview

Rider Iron & Steel Ghana Ltd.Rider Iron & Steel Ghana Ltd. proposes to build one cold charging pusher type reheating furnace fired by heavy oil with a maximum heating capacity of 35T/H.    
The project described in the technical appendix refers to: the design, manufacture, inspection/testing and commissioning instruction etc of one (1) 35 T/Hr. capacity pusher type Reheating Furnace on a turnkey basis.
The furnace should be designed and built in a way that ensures leading technologies, stable operation and advanced technical parameters .     

1.2 Guiding Principle and Main Technical Decisions for Furnace Design 

The furnace should be as long as its workshop arrangement can allow.
It means that the length of furnace will be determined according to lower capacity limit of energy-efficient furnaces, which can both accommodate annual design capacity of rolling mill and allow certain room for future capacity increase.
When operating with maximum capacity, the furnace can output 35 ton billets per hour (cold standard billets heated up to 1250 ºC), and reserve some extra heating capacity for future capacity increase of rolling mill.
Configuration of heating method and capacity, and selection of operation system
The furnace will be fired by heavy oil.
Before combustion of heavy oil, the heavy oil is heated up to 100-120 ºC, and the air is heated up to around 450 ºC through heat exchange with flue gas via air recuperator, thus meeting requirements of regenerative combustion for billet heating.  
Such combustion technology can both meet requirements for billet heating and reduce energy consumption.
The furnace adopts optimum three-section temperature control system, including preheating section, heating section and soaking section.    
The combustion heat is distributed in a reasonable way to ensure adequate heat supply for both top and bottom heating section. Such heat distribution can ensure a flexible heating system with main billet heating at the head end of the furnace. In heating section the billets can be thoroughly heated, or quickly rise in temperature, so that the billets can reach targeted disch.
Practical, reliable and advanced electrical control instruments and devices are adopted to ensure basic automation, and stable and reliable furnace operation.
 

 

2 Main Dimensions and Arrangement of Furnace 
2.1 Layout of Furnace 

The pusher type furnace fired by heavy oil will feature single row charging, ending charging, and end discharging.
During normal operation, cold billet is lifted by workshop crane onto charging table, and then is transferred by charging roller table to the position before the furnace.  
The qualified billet is transported by charging roller table to the position before the furnace, and then pushed by pusher into the furnace for heating. When rolling mill sends signal for billet feeding, the billet moves through discharging slide onto discharging roller table outside the furnace, and finally be charged to the rolling mill for rolling.  
The furnace is provided with 1 pc of combustion blower and 1 pc of steel stack.
The bottom skids of furnace adopt water cooling.
The furnace is designed with charging control room on charging side of the furnace for charging operation.
Instrument room and electrical room of the furnace will be reasonably arranged for convenience of operation.

2.2 Design Parameter and Main Dimension of Furnace 
Dimension of billets:       120×120×3000mm,150×150×3000mm
Type of furnace:            Continuous pusher type furnace
Method of charging and discharging: end charging and end discharging
Heating capacity of furnace:  rated capacity≥ 35t / h  
Elevation of discharging hole:  +800 (to be determined)
Method or air preheating: air recuperator (preheating temperature 450ºC )

Cooling method of bottom skids:     water cooling
Effective length of furnace:          21000mm
Effective width of furnace:           3600mm

3 Process Performance and Structure Description of Furnace 

3.1 Furnace Structure 

The furnace from charging end to discharging end is divided into three sections along the length direction of furnace, including unheated preheating section, heating section and soaking section.
The furnace structure and burner are reasonably designed to ensure that furnace gas and body can efficiently transfer heat to billets, and temperature distribution along the direction of furnace width is uniform. The heavy oil burners are arranged on side walls of the furnace since the proposed furnace is fired by heavy oil.

3.2 Heating and Combustion Device of Furnace 

The furnace is provided with heat zone, and soak zone for heating and temperature control. See following table for type and quantity of burners:

Fuel: Heavy Oil

Description	Name of Heating Section	QTY. of Burner	Power of Burner kg/h	Heat Capacity kg/h	Proportion %
HEAT ZONE	TOP HEAT ZONE	6	80	416	32
	BOTTOM HEAT ZONE	6	90	494	38
SOAK ZONE	TOP HEAT ZONE	3	70	195	15
	BOTTOM HEAT ZONE	3	70	195	15
Total		18	1440	1300	100

3.3 Heavy Oil Combustion System 

Heavy oil system of furnace consists of oil storage and transportation system,oil supply system, oil recirculating system, oil atomizing system, and oil purging system.

3.4 Air System 

Air pipeline: 1 set
Air pipeline consists of all air pipes from outlet of combustion fan to each burner.
Electric actuator is provided at cold air inlet of combustion fan to regulate air volume and pressure of air pipeline system, ensuring that the fan operates within stable range of its performance curve when the required air volume and pressure in the air pipeline system change, and thus avoids fan surge.
The combustion air system is controlled in heating section and soaking section. The main pipe in each section is provided with 1 pc of flow orifice plate, and 1 pc of flow regulating valve, and the branch pipe before each burner is provided with 1 pc of expansion joint, and 1 pc of manual regulating butterfly valve for control of burner flow.
Combustion blower:
Air volume:      15000~20000 Nm³/h
Air pressure :     ~10000 Pa
Motor:           Y315M-4
Power:           90 kW
Hot air main pipe at outlet of air preheater is provided with hot air release pipe and valve. When the temperature of hot air exceeds setting value, the hot air is automatically released to increase air flow inside the preheater and lower surface temperature of air tubes for the protection of the preheater.

The hot air pipes are provided with externally wrapped thermal insulation suitable for respective pipe diameter to reduce heat loss during transportation of hot air.

3.5 Smoke Exhaust System and Preheater of Furnace 

Smoke exhaust system at furnace tail consists of exhaust fan,flue and steel stack.  
The waste heat of flue gas is recycled through air preheater and used to heat up air to ~ 450ºC. Such design can reuse the waste heat and improve the thermal efficiency of the furnace.

3.6 Ignition System 

The ignition system is mainly used for the first furnace drying-out, and furnace restart in the first phase when the furnace is fired by heavy oil.  
When heavy oil is used as furnace fuel, furnace ignition, drying-out, or temperature rise at the early stage of furnace start or restart can be difficult, so following solutions are suggested (for the reference of the buyer):

Add 1 set of diesel ignition system equipped with diesel tank and pump. The diesel pump delivers diesel to branch pipes before certain burners in soaking section. Valves are provided before converging point of pipes of heavy oil and diesel, so that the supply of heavy oil and diesel can be switched over. Then diesel can be used for furnace ignition, and temperature rise at the early stage of furnace start or restart.
When furnace temperature reaches certain value, switch to heavy oil system.

3.7 Equipment Outside the Furnace

The equipment outside the furnace mainly includes:

• Conveying roller table at the charging end
• Stop at the charging end
• Industrial TV of normal temperature at the charging end
• Roller table at the discharging end
• Buffering plate at the discharging end

4 Instrument and Basic Automation of Furnace 

PLC system for combustion control conducts circuit control, parameter collection and data processing for all detection items of instruments, and operator station conducts all necessary operations, and indicating and monitoring of parameters for furnace operation.

The sequential control of furnace and the combustion control system will share 1 set of PLC system adopting Siemens S7-300 series. PROFIBUS-DP is used for communications between PLC host CPU, remote I/O (ET200M)station and variable frequency system. Ethernet is used for communications between the PLC and the operation station. The operation station adopts Siemens WinCC V6.0 software configuration man-machine interface.
 

Company Profile

Company Profile
Vision
With decades of rapid development and accumulation, China has been perfect and mature on technology and management in various industrial areas, shaping a complete processing manufacturing industry with competitive price, well known for its excellent skill, high efficiency and hardworking team with qualification for personnel dispatching.
At the time of economic globalization, it is our consistent target and objective to integrate and export all kinds of technology, management mode, engineering project and manpower as per the actual requirement of our client With our own abundant technical strength, superior integration capability of technology and resources, well experienced of project implementation and management as basis and platform;
Let China go out to the world, and make the world know of China;

Professional
Professional technical and management team with abundant experience in the implementation of domestic and international projects;
Responsive
Responsively and meticulously, translating your needs into complete solutions;
Integration
Integrating various technologies and resources in China and fulfilling complementary advantages, by relying on professional teams;
Motivation
Motivated to provide the optimal solution and quality products;
Exceptional
Exceptional, delivery and,implementation of projects to meet, your expectations;

Our TeamProfessional technical team
Prime is staffed with a professional import & export team skilled in the practice of import and export business, including sea freight packing, logistics organization, L/C review, cargo booking, and customs clearance, L/C negotiation, double authentication of shipment documents, etc.
All the above personnel is well experienced in the execution of projects in Southeast Asia and the Middle East.

Complete procurement mechanism
Our professional team of procurement offers strict management of supplier's qualification inspection and selection, a complete system of supplier listing, rating and elimination. To ensure the supplier is qualified and capable of implementing the project and supplied with the product of high quality and maintaining a healthy and good condition of credibility, contract settlement, and capital flow management.

Quality management system
Our complete quality management system, the process control covering from Scheme formulation, engineering technology, and detailed design, to processing and manufacturing of equipment and material, ex-factory test and site erection, and commissioning till it is put into production, which through multi-level inspection, tour inspection, supervision and node control can ensure the quality of the final product.

Well experienced
The executive team is abundant in experience of overseas project implementation with similar project working experiences, esp. experience in Southeast Asia, and Middle East projects.

ISO System Certification

 

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