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Normal-temperature dearsenic agent as well as preparation method thereof

A normal temperature, arsenic removal technology, applied in chemical instruments and methods, refining with metal oxides, physical/chemical process catalysts, etc., can solve the problems of low arsenic removal rate, heavy metal pollution, high cost of arsenic removal agent, etc. The effect of removing arsenic efficiency, improving arsenic capacity, and enhancing the effect of arsenic removal

Active Publication Date: 2014-02-12
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the arsenic removal agent in the prior art has high cost, heavy metal pollution, low arsenic removal rate, and the 2 When S coexists with arsenic, the efficiency of arsenic removal is reduced when the arsenic is to be removed, and it provides a low production cost, simple production process, reasonable reuse of spent catalysts, and high arsenic removal rate at room temperature, and is suitable for use in h 2 The arsenic-removing agent of the substance to be de-arsenic that coexists with arsenic, and further provides the preparation method of the arsenic-removing agent

Method used

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  • Normal-temperature dearsenic agent as well as preparation method thereof
  • Normal-temperature dearsenic agent as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Grind copper oxide and zinc oxide into powders below 200 microns, weigh 60 grams of manganese ore powder, 10 grams of copper oxide powder, 10 grams of zinc oxide powder, 15 grams of sheep liver soil, 5 grams of scallop powder, and appropriate amount of water, mix Stir together to form a mixture, put the material obtained in the above process into the kneader repeatedly and fully knead evenly, then put it into the extruder, extrude the material into a φ4×2-10mm strip shaped product; place the formed product at 120 After drying at 350-400°C for 3 hours and sintering at 350-400°C for 3-4 hours, the finished product M1 of arsenic removal agent at room temperature was obtained. The performance data of M1 after testing are shown in Table 1.

Embodiment 2

[0035] Grind copper oxide and zinc oxide into powders below 200 microns, weigh 60 grams of manganese ore powder, 5 grams of copper oxide powder, 5 grams of zinc oxide powder, 15 grams of kaolin, 5 grams of cellulose powder, and appropriate amount of water, mix together Stir evenly to form a mixture, put the material obtained in the above process into a kneader repeatedly and knead evenly, then put it into an extruder, extrude the material into a φ4×2-10mm strip molding; place the molding at 120°C Dry for 3 hours, and bake at 350-400°C for 3-4 hours to obtain the finished product M2 of arsenic removal agent at room temperature. The performance data of M2 after testing are shown in Table 1.

Embodiment 3

[0037]Grind copper oxide and zinc oxide into powders below 200 microns, weigh 50 grams of manganese ore powder, 15 grams of copper oxide powder, 15 grams of zinc oxide powder, 15 grams of aluminosilicate cement, 5 grams of cellulose powder, and appropriate amount of water , mixed together and stirred evenly to make a mixture, put the material obtained in the above process into a kneader repeatedly and fully kneaded evenly, then put it into an extruder, and extrude the material into a φ4×2-10mm strip shaped product; put the formed product in Dry at 120°C for 3 hours, and bake at 350-400°C for 3-4 hours to obtain the finished product M3 of arsenic removal agent at room temperature. The performance data of M3 after testing are shown in Table 1.

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Abstract

The invention relates to a normal-temperature dearsenic agent as well as a preparation method thereof, belonging to the technical field of dearsenic purifying. The normal-temperature dearsenic agent consists of active ingredients and auxiliaries, wherein the auxiliaries are one or more of a binder, a pore-forming agent and an extruding aid; the active ingredients comprise the following components: 40wt%-60wt% of manganese dioxide, 5wt%-15wt% of copper oxide and 5wt%-15wt% of zinc oxide; and content of the auxiliaries is 15wt%-20wt%. In the normal-temperature dearsenic agent disclosed by the invention, the manganese dioxide, the copper oxide and the zinc oxide with proper component content are matched, so that competing reaction of H2S and the copper oxide is restrained, and therefore, a using range of copper-series dearsenic agents is broadened, the copper-series dearsenic agents are enabled to be capable of being suitable for an H2S-contaning substance with arsenic to be removed, dearsenic activity of the dearsenic agent is ensured, dearsenic efficiency is improved, and cost of the dearsenic agent is lowered.

Description

technical field [0001] The invention relates to a normal temperature arsenic removal agent and a preparation method thereof, belonging to the technical field of arsenic removal and purification. Background technique [0002] In the ethylene industry, in the process of hydrocarbon cracking, catalytic reforming, hydrogenation process, etc., the raw oil will contain a very small amount of arsenic. Although the content of arsenic is very low, it can cause catalyst poisoning, resulting in catalyst failure. Therefore, it is necessary to remove the arsenic compounds in the raw oil as much as possible. Over the years, researchers have been exploring various effective arsenic removal methods in order to minimize the poisoning effect of arsenic on catalysts in petroleum hydrocarbon processing. [0003] The existing arsenic removal products mainly include nickel-based, lead-based, manganese-based, and copper-based arsenic removal agents; among them, nickel-based arsenic removal agents...

Claims

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Application Information

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IPC IPC(8): B01J23/889C10G29/16
Inventor 赵素云谢红李博冯续赵文涛马海福
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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