Medium and low temperature desulfurizer and preparation method thereof

Abstract

The invention discloses a medium and low temperature desulfurizer and a preparation method, and belongs to the technical field of desulfurizers, the medium and low temperature desulfurizer comprises modified calcium hydroxide powder, an active carrier, ferrous nitrate, a pore-forming agent and a binder, the preparation method of the medium and low temperature desulfurizer comprises the following steps: adding the modified calcium hydroxide powder, the active carrier, the ferrous nitrate, the pore-forming agent and the binder into a mixer, and uniformly stirring; a proper amount of water is taken and added into the mixed powder, after uniform stirring, the powder is added into a banded extruder for extrusion molding, and the carbon nanotubes are multi-walled carbon nanotubes. The preparation method has the advantages that the multi-walled carbon nanotubes play a role in dredging tube cavities, the problem of breakage caused by too large internal pressure is avoided, the effect of connecting hole cavities is achieved, and the service life of the multi-walled carbon nanotubes is prolonged; a pipe system similar to a tree root shape is formed, so that the specific surface area is greatly increased, and more active sites are provided for reaction; the ferric nitrate and the carboxymethyl cellulose can improve the surface smoothness and the strength of the catalyst.

Description

Technical field: [0001] The invention belongs to the technical field of desulfurizers, and more specifically relates to a medium-low temperature desulfurizer and a preparation method thereof. Background technique: [0002] Desulfurizers generally refer to agents that remove free sulfur or sulfur compounds in fuels, raw materials or other materials; in the control and treatment of pollutants, they mainly refer to agents that can remove sulfur oxides in exhaust gas. The most commonly used desulfurizers for removing sulfur dioxide in flue gas are cheap lime, limestone and alkaline solutions prepared with calcareous agents. Chemical plants, smelters, etc. often use solutions such as sodium carbonate and basic aluminum sulfate as desulfurizers to treat tail gas containing sulfur dioxide, and can be desorbed and recycled. [0003] There is a certain difference between the desulfurizer and the adsorbent. Since the desulfurizer does not need special treatment, it can be used only b...

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Problems solved by technology

[0005] In order to solve the above problems and overcome the deficiencies of the prior art, the present invention provides a medium and low temperature desulfurizer, which can effectively solve the problem that the medium and low temperature desulfurizer can be used only after being extruded and dried, without high-temperature baked molding, desulfurization The mechanical strength of the agent is poor after molding, and the phenomenon of "powdering" is prone to occur during transportation and use, resulting in waste.

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