The invention discloses low-temperature
gas phase hydrolysis equipment for preparing white
carbon black by using
silicon tetrachloride. The low-temperature
gas phase hydrolysis equipment comprises a feeding
system, a gas
carrier system, a
gas phase hydrolysis system, a
cyclone separation system, a primary deacidification
system, a secondary deacidification system and a
tertiary deacidification system.
Silicon tetrachloride and pure water are continuously introduced according to a
molar ratio of 1 : (4 to 8); uniform liquid drops are formed through an atomizing spray head and are vaporized after encountering high-temperature carrier gas, and reaction is carried out in a gas phase hydrolysis
tower at 120 to 180 DEG C, so as to produce the white
carbon black and
hydrogen chloride gas; gas-
solid separation of a mixed product is realized through the
cyclone separation system, and then
drying is performed for 4 hours at 160 DEG C to obtain a white
carbon black product; a concentrated
hydrochloric acid byproduct is recycled from
hydrogen chloride mixed gas through the primary deacidification system and the secondary deacidification system;
tail gas is subjected to treatment through the
tertiary deacidification system so as to realize
pollution-free emission. According to the low-temperature gas phase hydrolysis equipment disclosed by the invention,
reaction energy consumption can be reduced,
corrosion of the equipment is slowed, and the production cost is reduced; moreover, production capacity of the white carbon black of 100 to 200kg / d and the concentrated
hydrochloric acid byproduct are achieved; the prepared white carbon black product is excellent in performance, and has wide production application prospects.