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

A nanoframe material for the adsorption of hydrogen sulfide gas

A frame material, hydrogen sulfide technology, applied in the direction of gas fuel, fuel, other chemical processes, etc., can solve the problems of low adsorption capacity, complicated process, secondary pollution, etc., and achieve the effect of high adsorption efficiency, simple operation, and reduced cost

Active Publication Date: 2022-05-17
GUIZHOU UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dry desulfurization includes iron method, iron oxide method, NCA solid absorption method, molecular sieve method, membrane separation method, etc. This process is mainly suitable for fine gas desulfurization, and its sulfur content is relatively low. Most desulfurizers cannot be regenerated and need to be discarded; wet The desulfurization method includes liquid phase oxidation method, liquid phase catalytic method, sodium carbonate or alcohol amine absorption method, etc. This process can meet the desulfurization requirements of higher loads, has high desulfurization efficiency, can be operated continuously, and has a wide range of applications. The advantages of the liquid-phase oxidation method are more prominent, but the process is complex, easy to produce secondary pollution, and the investment is large, which is difficult for ordinary manufacturers to bear.
Generally, metal oxides have good desulfurization effect, but the utilization rate of metal oxides is low and the cost is high; ordinary activated carbon materials mainly composed of micropores are widely used as adsorbents, but pores are prone to appear during the adsorption process of hydrogen sulfide clogging, low adsorption capacity

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 nanoframe material for the adsorption of hydrogen sulfide gas
  • A nanoframe material for the adsorption of hydrogen sulfide gas
  • A nanoframe material for the adsorption of hydrogen sulfide gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A nano-frame material used to adsorb hydrogen sulfide gas is prepared by the following method: firstly, concentrated nitric acid or concentrated hydrochloric acid is dissolved in water to prepare an acidic aqueous solution with a pH value of 3; then the structural formula is as attached figure 1 Add the compound Z shown in the acidic aqueous solution, and then add mercuric perchlorate or mercuric chloride into the acidic aqueous solution according to the molar ratio of compound Z: mercuric perchlorate or mercuric chloride as 1:2 until the precipitation does not occur again, and then Filter and freeze-dry the precipitate at -80°C for 3 hours.

Embodiment 2

[0031] Example 2: A nano-frame material used to adsorb hydrogen sulfide gas is prepared by the following method: firstly, concentrated nitric acid or concentrated hydrochloric acid is dissolved in water to prepare an acidic aqueous solution with a pH value of 2; then the structural formula is as attached figure 1 The shown compound Z is added in the acidic aqueous solution, and then mercuric perchlorate or mercuric chloride is added in the acidic aqueous solution at a molar ratio of 1:1 by compound Z: mercuric perchlorate or mercuric chloride until the precipitation does not occur again, and then Filter and freeze-dry the precipitate at -70°C for 1 h.

Embodiment 3

[0032] Example 3: A nano-frame material used to adsorb hydrogen sulfide gas is prepared by the following method: firstly, concentrated nitric acid or concentrated hydrochloric acid is dissolved in water to prepare an acidic aqueous solution with a pH value of 4; then the structural formula is as attached figure 1 The shown compound Z is added in the acidic aqueous solution, and then mercuric perchlorate or mercuric chloride is added in the acidic aqueous solution at a molar ratio of 1:3 of compound Z: mercuric perchlorate or mercuric chloride until the precipitation does not occur again, and then Filter and freeze-dry the precipitate at -90°C for 5 hours.

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

No PUM Login to View More

Abstract

The invention discloses a nano-frame material for absorbing hydrogen sulfide gas, which is prepared by dissolving compound Z in an acidic aqueous solution, adding mercury salt for reaction, filtering and freeze-drying. The adsorption material of the invention has the characteristics of low cost, high adsorption efficiency and simple adsorption operation.

Description

technical field [0001] The invention relates to a nano-frame material, in particular to a nano-frame material for absorbing hydrogen sulfide gas. Background technique [0002] Hydrogen sulfide widely exists in biogas and natural gas, and its natural causes include biodegradation, microbial sulfate reduction, thermochemical decomposition, and sulfate thermochemical reduction. It has a pungent smell of rotten eggs at a low concentration, and has a foul smell at an extremely low concentration and is highly toxic (LC50=444ppm<500ppm). The maximum allowable concentration of hydrogen sulfide in the air is 10mg / m 3 . When concentration ≥ 760mg / m 3 (502ppm), people will soon have acute poisoning, respiratory paralysis and death, when the concentration of hydrogen sulfide is between 300-760mg / m 3 (198 ~ 502ppm), can cause pulmonary edema, bronchitis and pneumonia, headache, dizziness, nausea, vomiting, dysuria. Hydrogen sulfide is not only very toxic to the human body, but al...

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): B01J20/22C10L3/10B01J20/30
CPCB01J20/22C10L3/103
Inventor 周桂林张晓东粟绍媛郑子麒王攀倪新龙
Owner GUIZHOU UNIV
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