Atmosphere balancing system for carbonized furnace

Abstract

The invention relates to the technical field of production technologies of carbon fibers, in particular to an atmosphere balancing system for a carbonized furnace. The atmosphere balancing system comprises an inlet emergency exhaust hood for exhausting waste gases at a filament tow inlet, an inlet sealing cavity for preventing gases from entering the carbonized furnace along with filament tows, aninlet process chamber for filling the carbonized furnace with inert gases, the carbonized furnace for carbonizing the filament tows, an outlet cooling chamber for cooling the filament tows, an outletsealing cavity for preventing the gases in the carbonized furnace from exhausting along with the filament tows and an outlet emergency exhaust hood for exhausting the waste gases at a filament tow outlet, wherein the inlet emergency exhaust hood, the inlet sealing cavity, the inlet process chamber, the carbonized furnace, the outlet cooling chamber, the outlet sealing cavity and the outlet emergency exhaust hood are sequentially connected along the running path of the filament tows; and or the atmosphere balancing system comprises the inlet emergency exhaust hood, the inlet sealing cavity, aninlet waste discharging cavity, the carbonized furnace, the outlet cooling chamber, the outlet sealing cavity and the outlet emergency exhaust hood which are sequentially connected. By use of the atmosphere balancing system disclosed by the invention, the atmosphere of the filament tows in the carbonizing process is kept balanced, the waste gases of the filament tows produced in the carbonizing process can be effectively exhausted, leakage of the waste gases is prevented, and the use amount of the inert gases also can be reduced.

Description

technical field [0001] The invention relates to the technical field of carbon fiber production technology, in particular to an atmosphere balance system of a carbonization furnace. Background technique [0002] Carbon fiber and its composite materials have excellent properties such as high strength, high modulus, fatigue resistance, electrical conductivity, good heat transfer, and small thermal expansion coefficient, and have been widely used in various military and civilian fields. Carbon fiber is an essential raw material for the development of cutting-edge weapons, especially the main reinforcement material for structural and functional materials urgently needed by strategic missiles, fighter jets, and nuclear energy equipment; carbon fiber-reinforced composite materials are also widely used in satellites, aerospace, wind power blades and other fields , and used in the manufacture of rocket roofs, motor boats, industrial robots, automobile leaf springs, drive shafts, bats...

AI Technical Summary

Problems solved by technology

[0003] At present, in carbonization furnaces such as low-temperature furnaces, high-temperature furnaces and ultra-high-temperature furnaces used in the carbon fiber production process, there is an imbalance in the atmosphere, that is, the gas pressure inside and outside the furnace of the carbonization furnace is unbalanced; while the carbonization furnace During operation, the furnace body needs to maintain a slight positive pressure, and a small amount of gas will flow out of the furnace body. Maintaining a slight positive pressure in the furnace body can not only prevent the gas outside the furnace from entering the furnace and cause damage to the furnace, but also prevent a large amount of inertness in the furnace Gas and exhaust gas leakage, therefore, when the atmosphere of the carbonization furnace is unbalanced, it is easy to cause a large amount of gas in the carbonization furnace to leak out; the carbonization furnace usually completes the chemical reaction under the protection of an inert gas, and the inert gas is usually nitrogen or argon, Exhaust gas will be generated during the reaction process, and it should be discharged in time, otherwise the exhaust gas will easily damage the inner cavity of the carbonization furnace; the existing carbonization furnace consumes too much inert gas, which increases the production cost, and the seal is not perfect, and the exhaust gas is easy to leak into the workshop

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