Dry gaseous mercury removal agent

Abstract

The invention relates to a dry gaseous mercury removal agent. The dry gaseous mercury removal agent comprises the following components in weight percentage: 8 to 37.5 percent of sulfur, 0.8 to 16 percent of alkaline compound of Na, 0.1 to 1 percent of mass transfer accelerator and the balance of activated carbon, wherein the sulfur is uniformly distributed in gaps of the activated carbon; the alkaline compound of Na comprises NaHCO3, Na2CO3 and the like; and the mass transfer accelerator comprises chlorine gas, sodium salts of hypochloric acid and acid and the like. For the preparation of the dry gaseous mercury removal agent, the particle-based materials (with the diameter of 1 to 5mm and the length of 3 to 10mm) of the activated carbon are impregnated in the mixed solution of the alkaline compound of Na and the mass transfer accelerator for 1 to 24h to form the dry gaseous mercury removal agent. The dry gaseous mercury removal agent is suitable for an industrial gas mercury removal process at the operation temperature of 0 to 110 DEG C and out of the limit of other conditions; the final conversion product of the gas mercury is environmentally-friendly stable mercuric sulfide free of secondary pollution; and the dry gaseous mercury removal agent has the advantages of simple process, high mercury volume, low investment for mercury removal, low operation cost and the like.

Description

technical field [0001] The invention relates to a gas purification agent, in particular to a dry-process gaseous mercury removal agent used in the gas removal process. Background technique [0002] With the development of petroleum and natural gas, coal chemical industry, metallurgy, electric power and other industries, the demand for harmless mercury removal is becoming increasingly urgent. On the one hand, the mercury emitted in the atmosphere has caused serious environmental pollution, and even caused social mass incidents of heavy metal poisoning. , on the other hand, mercury causes corrosion to equipment in the process of natural gas production, which has adverse effects on the working environment and downstream users. The traditional technology is molecular sieve or activated carbon adsorption, which has secondary pollution, so there is an urgent need for a The mercury is removed before the production equipment, the mercury removal efficiency is high, and the mercury r...

AI Technical Summary

Problems solved by technology

[0002] With the development of petroleum and natural gas, coal chemical industry, metallurgy, electric power and other industries, the demand for harmless mercury removal is becoming increasingly urgent. On the one hand, the mercury emitted in the atmosphere has caused serious environmental pollution, and even caused social mass incidents of heavy metal poisoning. , on the other hand, mercury causes corrosion to equipment in the process of natural gas production, which has adverse effects on the working environment and downstream users. The traditional technology is molecular sieve or activated carbon adsorption, which has secondary pollution, so there is an urgent need for a The mercury is removed before the production equipment, the mercury removal efficiency is high, and the mercury removal agent does not produce secondary pollution