A kind of charcoal heat-reducing gas coupled reduction so 2 Apparatus and method for preparing sulfur
A gas coupling and SO2 technology, applied in the preparation/purification of sulfur, can solve the problems of environmental pollution, utilization rate less than 50%, land occupation, etc., and achieve the effect of reducing side reaction products
Active Publication Date: 2019-08-20
SHANDONG UNIV
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Problems solved by technology
However, subject to technical and geographical constraints, the current utilization rate of desulfurized gypsum is less than 50%, and the utilization rate of phosphogypsum is less than 20% of the total. Waste gypsum that cannot be used can only be piled up for disposal
It not only takes up a lot of land, causes huge pollution to the environment, but also is an extreme waste of resources
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[0041] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0042] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
[0043] Such as figure 1 As shown, a charcothermal-reducing gas coupled reduction of SO 2The device for prepari...
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Abstract
The invention discloses a device and method for preparing sulfur through carbon thermal-reduction gas coupling reduction of SO2. Reduction gas is divided into two parts; a first part of the reductiongas is mixed with sulfur-containing gas, then the mixed gas is introduced from the bottom of a carbon thermal reduction reactor, and a second part of the reduction gas is introduced from a set heightof the carbon thermal reduction reactor; SO2 in the sulfur-containing gas is reduced into sulfur under the reduction action of the reduction gas and the catalytic action of a reduction material; the generated gas sulfur flows out of the carbon thermal reduction reactor along with gas flow and is subjected to gas-solid separation and condensation to obtain liquid sulfur; exhaust gas after condensation flows back to the carbon thermal reduction reactor through a wind distribution device and is used as spraying wind for blowing large particles in a reduction layer to the height of the carbon thermal reduction reactor. The device and method can improve the yield of sulfur, also can reduce the reaction temperature and increases the yield of sulfur.
Description
technical field [0001] The invention specifically relates to a carbon heat-reducing gas coupled reduction of SO 2 Apparatus and method for preparing sulfur. Background technique [0002] my country is a big power producing country, more than 90% of the power plants use wet desulfurization process, and the by-product is desulfurization gypsum. Since 2010, my country's annual output of desulfurized gypsum has exceeded 100 million tons. Phosphogypsum is a solid waste discharged during the production of wet-process phosphoric acid. The production of 1 ton of phosphoric acid produces about 5 tons of phosphogypsum. The annual discharge of phosphogypsum in my country exceeds 50 million tons, and the accumulation of phosphogypsum for many years has reached hundreds of millions of tons. The main components of desulfurization gypsum and phosphogypsum are calcium sulfate dihydrate CaSO 4 2H 2 O, its content and quality are even higher than natural gypsum. However, subject to tech...
Claims
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IPC IPC(8): C01B17/04
Inventor 赵希强周萍宋占龙马春元王文龙王涛田叶顺
Owner SHANDONG UNIV