High-strength gas purifying and separating adsorbent as well as preparation and application thereof

Abstract

The invention relates to the fields of separation of mixed gas and purification of feed gas and discloses a high-strength gas purifying and separating adsorbent. CeO2 is introduced into a porous carrier, clay and a caking agent which are loaded with main active components to effectively disperse the main active components. The creative improvement point of the invention is that the CeO2 is effectively introduced into the adsorbent so as to improve the dispersibility of the main active component of Cu<+> or Cu<++> ion, improve the occupation ratio of a metal active center on the surface of the carrier, promote the effective complexation of Cu<+> with CO in the reaction and effectively improve the separation performance of the adsorbent. The CeO2 is introduced to promote an effective silicon and aluminum hydroxyl network to be formed among the carrier, the clay and the caking agent, promote the tight combination among the main active components of the metal ion, the carrier and the caking agent, strengthen the bonding of silicon and aluminum hydroxyl and effectively improve the strength which can reach over 100N. The adsorbent has favorable strength, is beneficial to being applied to a pressure swing adsorption (PSA) device and has improved practicability of wide application.

Description

technical field [0001] The invention relates to the field of separation of mixed gas and purification of raw material gas, in particular to an adsorbent, and also relates to the preparation method and application field of the adsorbent. Background technique [0002] With the continuous progress of society and the increasing awareness of environmental protection, how to purify the environment and develop industries is a problem faced by all mankind. Industrialized countries have a lot of industrial waste gas containing CO, which poses a serious threat to the environment. Therefore, recycling CO from such waste gas, reducing carbon emissions, utilizing clean energy, developing a low-carbon economy, and achieving sustainable development have become a topic of great concern and a goal of industrial development. [0003] 1. Recovery and purification of CO from industrial waste gas [0004] The furnace gas produced by the furnace of the steelmaking plant, the blast furnace gas ...

AI Technical Summary

Problems solved by technology

But the agent has Cu + Ions are unevenly dispersed in a single layer on the carrier, and the fatal defect of poor strength is that the strength of the fresh agent can only reach about 30 Newtons. Therefore, it is easy to pulverize and slag during the long-term use of industrial applications, and often occurs during use. Problems such as blocked pipelines and undurability directly affect the wider industrialization and practical application of adsorbents

[0014] CN1103816A (1995) discloses a kind of NaY and kaolin phase mixed press molding, with SiO 2 treated with NaOH aqueous solution to make a composite carrier, and then loaded Cu by exchange and impregnation 2+ ions, prepared by reduction into Cu(1)—Y zeolite adsorbent, the process is complicated, and the adsorption performance and strength of the adsorbent cannot be effectively improved.

[0015] CN1113828A (1995) discloses a kind of industrial water glass aluminum hydroxide or aluminum sulfate and a certain amount of Cu ++ and Mg ++ Ingredients, using crystallization directing agent technology, synthesized containing Ca ++ , Mg ++ ionic Y-type zeolite, and then Cu(NO 3 ) 2 exchanged, impregnated to prepare the adsorbent, which only adds Ca ++ , Mg ++ Ions in Y-type zeolite failed to effectively improve the separation performance and strength of the adsorbent

[0016] The above technologies all start with how to load Cu ions, the main active component. They only improve the separation performance of the adsorbent and improve the preparation technology, but they do not focus on solving the actual problems encountered in industrial applications. Key problems such as poor wear strength and poor durability must be solved in order to apply high-performance adsorbents to various fields of industrialization and play an effective role in industrial production practices. This long-standing technology problem