Process for preparing adsorbent simultaneously removing hydrogen chloride and mercury steam

Abstract

The present invention discloses preparation process of adsorbent for removing HCl and Hg steam simultaneously. The preparation process includes the following steps: 1. mixing bentonite suspension and ammonium cetyl trimethyl bromide at 50-100 deg.c for 10-24 hr, adding dodecylamine and polyhexenol and mixing for other 10-24 hr, adding ethyl silicate until creating precipitate, drying the precipitate at 80-100 deg.c for 12 and heating at 200-500 deg.c for 6 hr to obtain powder; and 2. compounding mixture solution of magnesium chloride, titanium tetrachloride and aluminum chloride, soaking the powder inside the mixture solution for 24 hr, dropping excessive dilute ammonia water to react, drying the product, and annealing at 300-600 deg.c to obtain the adsorbent. The adsorbent can remove HCl and Hg steam simultaneously, and has high removing effect, low cost and high heat stability.

Description

technical field

[0001] The invention relates to a preparation method of an environmentally friendly adsorbent capable of simultaneously removing hydrogen chloride gas and mercury gas from gas under a certain temperature condition (greater than 300 DEG C). Background technique

[0002] Hydrogen chloride gas and mercury gas can cause fatal hazards to the ecological environment and human health, and are harmful and highly toxic gases emitted in the air. my country consumes a lot of coal, and hydrogen chloride and mercury pollution are particularly harmful to the environment. In addition, many expensive catalysts will be poisoned and invalidated when used in an atmosphere containing hydrogen chloride, resulting in serious waste. In the industry, it is necessary to solve the problem of removing hydrogen chloride and mercury gas in the process of preparing synthesis gas, high-temperature gas, various industrial incineration gases and coal combustion power generation. At present,...