High-temperature dechlorination agent and preparation method thereof

The invention discloses a high-temperature dechlorination agent and a preparation method thereof. The high-temperature dechlorination agent is suitable for an environment at a temperature of 200 to 500 DEG C. The high-temperature dechlorination agent is prepared from 20 to 30% of Na2CO3, 20 to 30% of NaOH, 20 to 40% of bentonite, 2 to 10% of polyvinyl alcohol and 1 to 2% of (NH4)2CO3 by mixing. The high-temperature dechlorination agent has the advantages that component compatibility is good so that all technical indexes are high; through the high-temperature dechlorination agent, chloride content of raw material oil is reduced to content below 0.45mg/L from content above 10mg/L; a dechlorination ratio reaches above 95%; a chloride capacity reaches 53%; all the technical indexes are superior to technical indexes of congeneric products; raw material oil feeding requirements from a device can be satisfied; and the solution of device chlorine-corrosion problems is promoted.