1、 Overview of tubular furnace
Tubular furnace, including single tube, double tube, horizontal, openable, vertical, single temperature zone, double temperature zone, three temperature zone and other tubular furnace types. It is mainly used in experiments and small batch production in Colleges and universities, scientific research institutes, industrial and mining enterprises. It has the advantages of safety and reliability, simple operation, high temperature control accuracy, good heat preservation effect, large temperature range, high furnace temperature uniformity, many temperature zones, optional atmosphere, vacuum furnace type, etc.
Single set point or 30 segment programmable controller can be selected. Alumina ceramic fiber material and double-layer structure can reduce the surface temperature to normal temperature. Long uniform temperature zone, simple operation, reliable sealing and high comprehensive performance index. The furnace tube can be configured with heat-resistant steel, quartz glass, ceramic tube and other materials.
All vacuum tube furnaces are of periodic operation type. It can be used in laboratories, industrial and mining enterprises and scientific research institutions for element analysis and determination, quenching, annealing, tempering of general small steel parts and heating of new materials such as electronic ceramics. high temperature oven
The complete supply scope of vacuum tube furnace equipment includes temperature controller, thermocouple, compensation conductor, etc. There are two kinds of temperature control: relay control and thyristor control. Because it is an intermittent operation furnace, it generally adopts 40 section PLD advanced programmable control, which can strictly control the firing process of products.
Tubular furnace is divided into vertical furnace, cylindrical furnace and large square furnace according to furnace type;
It can be divided into: chemical reaction furnace, furnace for heating liquid, gas heating furnace and furnace for heating mixed phase flow.
2、 Classification of tubular furnace:
1. Vacuum tube furnace, atmosphere tube furnace
2. Ordinary tubular furnace, rotary tubular furnace, multi station tubular furnace
3. Split tube furnace, integrated tube furnace, vertical tube furnace and horizontal tube furnace
4. Single temperature zone tubular furnace, double temperature zone tubular furnace and three temperature zone (multi temperature zone) tubular furnace.
3、 Advantages of tubular furnace:
Mature process;
The furnace structure is simple;
Easy operation, easy control and continuous production;
The yield of ethylene and propylene is high and the product concentration is high;
Low power consumption and high thermal efficiency;
Most of the cracked gas and flue gas can be recovered;
The application scope of raw materials is expanding with the progress of cracking technology;
It can be combined with multiple furnaces for large-scale production.