Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for separating iron oxyhydroxide and sulfur and application of iron oxyhydroxide for sulfur removal

A technology for ferric oxyhydroxide and separation of hydroxyl groups, applied in the directions of ferric oxide/ferric hydroxide, separation methods, chemical instruments and methods, etc., can solve problems such as the decrease of desulfurization capacity of ferric oxyhydroxide, and achieve the effect of ensuring desulfurization properties

Active Publication Date: 2020-10-16
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the technical problem to be solved in the present invention is to overcome the defect that the desulfurization ability of iron oxyhydroxide decreases in the existing method for separating iron oxyhydroxide and sulfur, and then provide a method for reclaiming sulfur from sulfur-containing iron oxyhydroxide

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for separating iron oxyhydroxide and sulfur and application of iron oxyhydroxide for sulfur removal
  • A method for separating iron oxyhydroxide and sulfur and application of iron oxyhydroxide for sulfur removal
  • A method for separating iron oxyhydroxide and sulfur and application of iron oxyhydroxide for sulfur removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a method for separating iron oxyhydroxide and sulfur, which includes the following steps:

[0037] (1) Dry the sulfur-containing iron oxyhydroxide at 10°C to a moisture content of 5wt%;

[0038] (2) The air-dried sulfur-containing iron oxyhydroxide and ethylbenzene were stirred and mixed at 90°C for 2 hours at a mass ratio of 1:10, and solid-liquid separation was performed to obtain a sulfur-containing solvent and sulfur-removed iron oxyhydroxide A;

[0039] (3) The sulfur-containing solvent is cooled and crystallized at a temperature of 5°C, and solid-liquid is separated to obtain sulfur A.

Embodiment 2

[0041] This embodiment provides a method for separating iron oxyhydroxide and sulfur, which includes the following steps:

[0042] (1) Dry the sulfur-containing iron oxyhydroxide at 90°C to a water content of 0.1 wt%;

[0043] (2) Stir and mix the air-dried sulfur-containing iron oxyhydroxide and methylcyclohexane at a mass ratio of 1:30 at 80°C for 1 hour, and separate the solid and liquid to obtain the first sulfur-containing solvent and the first iron oxyhydroxide;

[0044] (3) The first iron oxyhydroxide and methylcyclohexane were stirred and mixed at 80° C. for 1 hour at a mass ratio of 1:30, and solid-liquid separation was performed to obtain a second sulfur-containing solvent and a second iron oxyhydroxide;

[0045] (4) Mix the second iron oxyhydroxide and methylcyclohexane at a mass ratio of 1:30 at 80° C. for 1 h, and separate solid and liquid to obtain a third sulfur-containing solvent and sulfur-removed iron oxyhydroxide B;

[0046] (5) Combine the first, second and third sul...

Embodiment 3

[0048] This embodiment provides a method for separating iron oxyhydroxide and sulfur, which includes the following steps:

[0049] (1) Air-dry sulfur-containing iron oxyhydroxide at 25°C until its water content is 4wt%;

[0050] (2) Stir and mix the air-dried sulfur-containing iron oxyhydroxide and trichloroethane at a mass ratio of 1:7 at 50°C for 3 hours, and separate the solid-liquid to obtain the first sulfur-containing solvent and the first iron oxyhydroxide;

[0051] (3) The first ferric oxyhydroxide and trichloroethane were stirred and mixed at a mass ratio of 1:7 at 50°C for 3 hours, and solid-liquid separation was performed to obtain a second sulfur-containing solvent and a second ferric oxyhydroxide;

[0052] (4) Mix the second iron oxyhydroxide and trichloroethane at a mass ratio of 1:7 at 50°C for 3 hours, and separate the solid and liquid to obtain a third sulfur-containing solvent and sulfur-removed iron oxyhydroxide C;

[0053] (5) Combine the first, second and third sulf...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
boiling pointaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for separating FeOOH and sulfur and applications of sulfur free FeOOH. According to the method, the water content of sulfur containing FeOOH is strictly controlled, onthe premise that sulfur and FeOOH are separated efficiently, the desulfurization performance of FeOOH is guaranteed, and the purity of recovered sulfur is ensured. If the water content of FeOOH is toohigh, FeOOH is dispersed in an organic solvent to form micro particles, the desulfurization performance of FeOOH is reduced, and recovered sulfur contains a large amount of iron.

Description

Technical field [0001] The invention relates to the technical field of iron oxyhydroxide, and belongs to a technology for realizing the separation of the surface of iron oxyhydroxide from sulfur under the premise of not destroying the structure of iron oxyhydroxide. Background technique [0002] The iron oxyhydroxide is neutral, and the main crystal forms include α-FeooH, β-FeooH, γ-FeooH and amorphous iron oxyhydroxide. It is one of the important desulfurizers, especially when it contains higher concentrations of CO 2 When the sulfur-containing gas is desulfurized, it has irreplaceable advantages. [0003] The desulfurization principle of iron oxyhydroxide is: the hydroxyl (-OH) and H in iron oxyhydroxide 2 After the dissociation of S, the HS is replaced to produce FeSSH, so as to achieve the effect of desulfurization. When the iron oxyhydroxide reaches its sulfur capacity, oxygen is injected into it to regenerate the iron oxyhydroxide, which can then be recycled. The specific des...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/02C01B17/033B01D53/81B01D53/52
CPCB01D53/52B01D53/81B01D2251/10C01B17/033C01G49/0009C01G49/02C01P2004/61C01P2006/12C01P2006/14C01P2006/16
Inventor 黄龙孙培志熊杰明张志民
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com