Manufacturing method of industrial sulfur
I. INTRODUCTION
In the field of raw materials for the production of industrial chemicals, industrial sulfur is an important basic raw material, which is widely used in agriculture, medicine, rubber, dyestuff, chemical industry and other industries. Therefore, mastering the manufacturing method of industrial sulfur is of great significance for improving product quality, reducing cost and promoting industrial development. In this paper, the manufacturing method of industrial sulfur will be introduced in detail, including raw material selection, process flow, reaction principle, equipment selection and other aspects of the content.
II, raw material selection
industrial sulfur manufacturing mainly uses natural sulfur ores or recycled sulfur-containing waste as raw materials. In the selection of raw materials, need to consider its sulfur content, impurity composition and particle size and other factors to ensure the smooth progress of the production process and product quality stability.
Three, process flow
The manufacturing process of industrial sulfur mainly includes the following steps:
1. Crushing of raw materials: Crush the natural sulfur ore or sulfur-containing wastes to a certain particle size, so as to facilitate the subsequent processing.
2. Smelting: The crushed raw materials are added into the smelting furnace and melted under high temperature to separate the sulfur from other impurities.
3. Clarification: After melting, the sulfur liquid is clarified to remove the insoluble impurities.
4. Cooling and crystallization: The clarified sulfur liquid is cooled and crystallized to obtain solid sulfur.
5. Centrifugal Separation: Separate the solid sulfur from the mother liquor by centrifugal machine to get the finished sulfur.
6. Drying: Dry the finished sulfur to reduce its moisture content and improve product quality.
Four, reaction principle
In the manufacturing process of industrial sulfur, the main physical changes occur, that is, the raw materials are melted at high temperature, clarification, cooling crystallization and other processes. Among them, the reactions occurring in the melting process are as follows:
S (solid) + thermal energy → S (liquid)
V. Equipment Selection
In the manufacturing process of industrial sulfur, the equipment to be used mainly includes crusher, melting furnace, clarification tank, cooling crystallizer, centrifuge and dryer. In equipment selection, need to be based on the production scale, product quality requirements, investment costs and other factors for comprehensive consideration, choose the right equipment.
Six, operation points
In the manufacturing process of industrial sulfur, the following operation points need to be noted:
1. Control the melting temperature and time to ensure that the sulfur is completely melted, while avoiding excessive temperature leading to product quality decline.
2. Maintain appropriate stirring speed and time during clarification to ensure that impurities are fully precipitated.
3. Control the cooling speed and temperature during the cooling and crystallization process to obtain high quality solid sulfur.
4. The temperature and air volume should be controlled during drying to avoid overheating or over-drying of the product.
7. Safety production and environmental protection requirements
In the manufacturing process of industrial sulfur, it is necessary to strictly comply with the safety production and environmental protection requirements to ensure that the production process is safe, stable and environmentally friendly. Specific measures include:
1. Strengthen the maintenance and repair of equipment to ensure the normal operation of equipment and prevent accidents.
2. Do a good job of employee safety training and education to improve employee safety awareness and prevent misuse.
3. Strengthen the ventilation and dust removal at the production site to reduce the hazards of dust and harmful gases to employees.
4. Properly dispose of the waste residue and waste water produced in the production process to avoid pollution to the environment.
VIII.Conclusion
Industrial sulfur, as an important raw material for the production of chemicals, its manufacturing method is of great significance for improving product quality, reducing costs and promoting industrial development. In the actual production process, it is necessary to choose suitable manufacturing methods and equipment according to the raw materials, production scale, product quality requirements and other factors, and strictly comply with the requirements of safe production and environmental protection to ensure that the production process is safe, stable and environmentally friendly.
