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Efficient desulfurizer taking industrial waste residues as active raw material as well as preparation method and application thereof

A technology for industrial waste residue and desulfurization agent, which is applied in the petroleum industry, separation methods, chemical instruments and methods, etc., can solve the problems of inability to meet the fine desulfurization standard and low desulfurization efficiency, and achieve low cost, high economic value and high precision. Effect

Pending Publication Date: 2021-05-14
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent (CN102284244A) and patent (CN103055689A) disclose several desulfurizers using industrial waste residue (fly ash, carbide slag) as raw materials, but the desulfurization efficiency is low and cannot meet the fine desulfurization standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Catalyst preparation

[0028] Screen and weigh 50g of 100-200mesh fly ash powder, 11.25g of ZnO powder, Fe 2 o 3 Add 11.25g of powder, 11.25g of CaO powder and 11.25g of MgO powder, add 5g of PVA and 40g of water, stir and mix evenly to obtain a mixture. The mixture was formed by extrusion molding, and a strip sample with a diameter of 3mm was extruded by an extruder, and dried at 60°C for 10 hours to obtain a finished desulfurizer. Crush the catalyst and screen the 10-20 mesh catalyst for use.

[0029] (2) Desulfurization agent performance test

[0030] Take a small sample of 7mL desulfurizer and put it into the desulfurization performance evaluation reaction device. The inner diameter of the U-shaped tube in the evaluation reaction device is 10mm, and the simulated gas is passed through for activity evaluation. The composition of the simulated gas is: H 2 S(2000ppm 15mL / min), H 2 (20mL / min), N 2 (200mL / min), catalytic temperature 240°C. Record the H in th...

Embodiment 2

[0032] (1) Catalyst preparation

[0033] Screen and weigh 50g of 100-200mesh carbide slag powder, 3.75g of ZnO powder, Fe 2 o3 Add 3.75g of powder, 18.75g of CaO powder and 18.75g of MgO powder, add 5g of PEO and 40g of water, stir and mix evenly to obtain a mixture. The mixture was extruded by an extrusion molding process, and a strip sample with a diameter of 3 mm was extruded by an extruder, and dried at 80° C. for 12 hours to obtain a finished desulfurizer. Crush the catalyst and screen the 10-20 mesh catalyst for use.

[0034] (2) Desulfurization agent performance test

[0035] Take a small sample of 7mL desulfurizer and put it into the desulfurization performance evaluation reaction device. The inner diameter of the U-shaped tube in the evaluation reaction device is 10mm, and the simulated gas is passed through for activity evaluation. The composition of the simulated gas is: H 2 S(2000ppm 15mL / min), H 2 (20mL / min), N 2 (200mL / min), catalytic temperature 240°C. R...

Embodiment 3

[0037] (1) Catalyst preparation

[0038] Screen and weigh 90g of 100-200mesh fly ash powder, 0.75g of ZnO powder, Fe 2 o 3 Add 3.75g of powder, 3.75g of CaO powder and 0.75g of MgO powder, add 1g of CMC and 40g of water, stir and mix evenly to obtain a mixture. The mixture was extruded by an extrusion molding process, and a strip sample with a diameter of 3 mm was extruded by an extruder, and dried at 60° C. for 14 hours to obtain a finished desulfurizer. Crush the catalyst and screen the 10-20 mesh catalyst for use.

[0039] (2) Desulfurization agent performance test

[0040] Take a small sample of 7mL desulfurizer and put it into the desulfurization performance evaluation reaction device. The inner diameter of the U-shaped tube in the evaluation reaction device is 10mm, and the simulated gas is passed through for activity evaluation. The composition of the simulated gas is: H 2 S(2000ppm 15mL / min), H 2 (20mL / min), N 2 (200mL / min), catalytic temperature 240°C. Record...

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Abstract

The invention discloses an efficient desulfurizer taking industrial waste residues as an active raw material and a preparation method and application thereof, and belongs to the field of materials. The preparation method of the material comprises the following steps of: adding a forming agent and water into an active raw material with the particle size of 100-200 meshes and a cocatalyst with the particle size of 100-200 meshes, and uniformly stirring and mixing to obtain a mixture; and extruding the mixture into a strip-shaped sample with the diameter of 3mm by using an extruder through an extrusion molding process, and drying and granulating the sample to obtain the desulfurizer product. The desulfurizer disclosed by the invention is high in low-concentration H2S removal precision, long in service life, simple in preparation process and wide in application range, synergistically solves the problem of resource utilization of industrial waste residues, and has great economic, environmental and social benefits.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a high-efficiency desulfurizer using industrial waste residue as an active raw material, a preparation method and application thereof. Background technique [0002] h 2 As one of the main air pollutants, S gas is a typical malodorous gas with the characteristics of wide pollution range and great harm. H contained in industrial exhaust gas 2 S gas can cause poisoning of pipelines and catalysts, deterioration of process conditions, corrosion of equipment, and serious environmental pollution problems, even endangering human safety and health. h 2 The treatment of S is imminent, and the country has issued relevant emission standards. According to the first-level requirements of the "Odor Pollutant Emission Standards", H 2 S concentration should not be higher than 0.03mg / m 3 . [0003] Dry desulfurization has the advantages of high precision, simple process, convenient operation and mai...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/52C10L3/10C10G70/00C10G29/16
CPCB01D53/81B01D53/52C10L3/103C10G70/00C10G29/16B01D2255/20738B01D2255/20792B01D2255/2045C10G2300/202C10G2300/70
Inventor 沈岳松徐鑫王建海
Owner NANJING UNIV OF TECH
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