- Classification of chemical kilns
Kiln is built with refractory materials to calcine materials, high-temperature chemical reactions, firing products of the main heat-consuming equipment.
Chemical kiln varieties, according to different standards have different classification methods.
(1) According to the classification of calcined material species: can be divided into lime kiln, glass kiln, enamel kiln, ceramic kiln, cement kiln, etc.
(2) According to the products generated classification: can be divided into calcium carbide furnace, phosphorus furnace, carbon black furnace, activated carbon furnace, etc.
(3) According to the classification of process use: can be divided into heating furnace, melting furnace, gasification furnace, firing furnace, heat treatment furnace, drying furnace, cracking furnace, conversion furnace, etc.
(4) According to the classification of heat source: can be divided into electric furnace, gas furnace, coal furnace, oil furnace, gas furnace, etc.
(5) According to the structural form of the furnace classification: can be divided into chamber furnace, open furnace, closed furnace, tower furnace, etc.
(6) According to the classification of the thermal system: can be divided into constant temperature furnace, variable temperature furnace, continuous operation furnace, intermittent operation furnace, etc.
- Basic requirements of chemical furnace
Chemical furnace is a kind of energy-consuming equipment that consumes a lot of energy in chemical enterprises. Aging furnace structure, unreasonable fuel combustion, refractory materials, low mechanization and unsound management system will cause the increase of energy consumption, therefore, the basic requirements of chemical furnace are
① The structure, size and technical performance of the furnace should be able to meet the requirements of production.
②The furnace should be equipped with perfect thermal measuring instruments and try to improve the degree of mechanization and automation to ensure the process heat requirements.
③ In keeping the equipment intact, to ensure product quality and energy saving in the future, the higher the production efficiency of the furnace the better.
④The long service life of the kiln, the kiln in operation by the radiation of high temperature flame and the erosion of certain chemical components, making it very easy to damage. The operation of an incomplete kiln affects both the quality of the product and prevents the full combustion of the fuel. Therefore, the use of high-quality refractory materials, construction, use and maintenance in strict accordance with the requirements of the necessary conditions to extend the life of the furnace.
⑤ The high degree of mechanization and automation of the kiln, good operating conditions, production safety and health, and favorable environmental protection.
In short, the basic requirements for the chemical furnace are good, high production, low energy consumption, high efficiency and less pollution.
- Energy efficiency of chemical furnace
Energy efficiency is the main economic indicator to evaluate the furnace, high energy efficiency means full utilization of fuel, low energy consumption per unit of product (or output), which is the main item of furnace monitoring. The main factors affecting the energy efficiency of chemical kilns are.
① Furnace (kiln) type structure.
② Combustion device and combustion system.
③The recycling of waste heat from the kiln.
④ Refractory materials for the kiln.
⑤ Design and transformation of the kiln.
⑥Supporting machinery and equipment of the kiln and automation.
⑦ Management level of enterprises, personnel quality, technology and market information services, etc.