Novel reaction furnace for preparing carbon disulfide

Abstract

Disclosed is a novel reaction furnace for preparing carbon disulfide. The novel reaction furnace comprises a reaction furnace body and the like, the reaction furnace body is a radiation section of thereaction furnace, and connected with an impact section, the impact section is connected with a convection section, and a lining is installed in the reaction furnace body, the impact section and the convection section; a plurality of burners are installed on the side wall of the reaction furnace body, a furnace pipe of the radiation section is installed in the reaction furnace body, a furnace pipein the impact section is connected with the furnace pipe of the radiation section, and a material enters the furnace pipe in the impact section; the convection section is connected with a preheater through a flue duct, and the preheater is connected with a chimney through an induced draft fan; an air inlet tower is connected with a burner blower which is connected with the preheater; the preheater is connected with the burners through a pipeline and provides hot air for the burners, and the hot air and natural gas entering the burners are mixed for burning. The novel reaction furnace is usedfor preparing carbon disulfide, on the premise of meeting process performance requirements, the heat distribution of a temperature field is more uniform, the quality of the carbon disulfide product ishigher, the exhaust smoke temperature and the heat dissipation loss are reduced, and the overall thermal efficiency of the reaction furnace is improved.

Description

technical field [0001] The invention relates to a novel reaction furnace, which is suitable for the technology and production process of producing carbon disulfide by a high-pressure non-catalytic method. Background technique [0002] Carbon disulfide is an important industrial raw material with a wide range of uses. The high-pressure non-catalytic process (improved FMC process) is the main preparation process of modern carbon disulfide. At present, the maximum production capacity of a single set of carbon disulfide reactor in China is 30,000 tons / year. Except for the 10,000 tons / year carbon disulfide system that uses a square box furnace, other reactors use a ladder furnace type, and the tubular reactor is a single tube pass. , After increasing the production capacity to 50,000 tons / year, the tubular reactor form cannot meet the process requirements, and the ladder furnace type is also difficult to achieve the purpose of uniform heating. [0003] The lining of the traditi...

AI Technical Summary

Problems solved by technology

At present, the maximum production capacity of a single set of carbon disulfide reactor in China is 30,000 tons / year. Except for the 10,000 tons / year carbon disulfide system that uses a square box furnace, other reactors use a ladder furnace type, and the tubular reactor is a single tube pass. After increasing the production capacity to 50,000 tons / year, the form of the tubular reactor cannot meet the process requirements, and it is difficult to achieve the purpose of uniform heating with the ladder furnace type

[0003] The lining of the traditional terraced reaction furnace adopts the form of fiber blanket layer, the distribution area of ​​the anchor nails, the thermal bridge phenomenon leads to the high temperature of the outer wall of the local furnace, and the large loss of heat dissipation

The temperature of the high-temperature flue gas from the trapezoidal furnace drops to 180-230°C after passing through the convection section, and it is discharged through the chimney. The discharge temperature is high and the heat loss is large.

The burner of the ladder furnace adopts the air injection type air supply method, the combustion air is at room temperature, and the secondary air is introduced into the furnace by the negative pressure of the furnace, and the adjustment range is small

Images