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

Acid-base treatment revival method of s-zorb waste adsorbent

A technology of acid-base treatment and adsorbent, which is applied in separation methods, filter regeneration, filtration separation, etc., can solve the problems of waste adsorbent regeneration, etc., and achieve the effects of increased specific surface area and pore volume, short process flow and flexible operation

Inactive Publication Date: 2017-10-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only separates the material that meets a certain particle size or only the magnetic nickel in it, and cannot really regenerate the spent adsorbent.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The NaOH solution with a pH value of 13 and the S-Zorb waste adsorbent were mixed and stirred at room temperature for 1.5 hours at a solid-to-liquid ratio of 5:1, and then the adsorbent was washed with deionized water, deionized water and S-Zorb The mass ratio of the waste adsorbent is 7:1, calculated on a dry basis; the adsorbent after alkali washing is obtained after filtration. The mixed solution of oxalic acid, hydrochloric acid and phosphoric acid with a pH value of 0.5 and the adsorbent after alkali washing were mixed and stirred at 50°C for 2 hours at a solid-to-liquid ratio of 3:1, and then the adsorbent was washed with deionized water. The mass ratio of deionized water and S-Zorb waste adsorbent is 6:1, and then filtered and dried at 100°C for 4 hours to obtain the initially regenerated adsorbent, and the initially regenerated adsorbent is roasted at 450°C for 2.5 hours , to obtain a revived adsorbent.

[0016] The S-Zorb waste adsorbent comes from the 0.9Mt / a...

Embodiment 2

[0018] K at pH 11.5 2 CO 3 The solution and the S-Zorb waste adsorbent were mixed and stirred at 45°C for 0.5 hours at a solid-to-liquid ratio of 4:1, and then the adsorbent was washed with deionized water. The mass ratio of deionized water to S-Zorb waste adsorbent was The ratio is 6:1, and the adsorbent after alkali washing is obtained after filtration. Mix the mixed solution of citric acid, oxalic acid and hydrochloric acid with a pH value of 1 and S-Zorb waste adsorbent at a solid-to-liquid ratio of 6:1, mix and stir at 70°C for 5 hours, and the mass ratio of citric acid and oxalic acid is 1:1 , and then wash the adsorbent with deionized water, the mass ratio of deionized water and S-Zorb waste adsorbent is 7:1, and then filter and dry at 120°C for 3 hours to obtain the initially regenerated adsorbent, and the initially regenerated The adsorbent was calcined at 500° C. for 1.5 hours to obtain the revived adsorbent.

Embodiment 3

[0020] NaOH and NaOH with a pH value of 10.5 2 CO 3 The mixed solution and the spent S-Zorb adsorbent were mixed and stirred at 70°C for 4.5 hours at a solid-to-liquid ratio of 7:1. NaOH and NaOH 2 CO 3 The mass ratio is 1:1, and then the adsorbent is washed with deionized water, the mass ratio of deionized water and S-Zorb waste adsorbent is 9:1, and the adsorbent after alkali washing is obtained after filtration. The mixed solution of citric acid, oxalic acid and sulfuric acid with a pH value of 0 and the S-Zorb waste adsorbent are mixed and stirred at room temperature for 4 hours according to the solid-to-liquid ratio of 5:1, and the mass ratio of citric acid, tartaric acid and oxalic acid is 1: 1:1, and then the adsorbent was washed with deionized water, the mass ratio of deionized water and S-Zorb waste adsorbent was 9:1, and then filtered and dried at 80°C for 6 hours to obtain the initially regenerated adsorbent. The primary regenerated adsorbent is calcined at 600° ...

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 relates to an acid-base treatment resurrection method for S-Zorb waste adsorbent, which belongs to the field of solid waste treatment and application. The S-Zorb waste adsorbent is mixed and stirred with an alkali solution, washed with deionized water and filtered to obtain alkali The treated adsorbent: the adsorbent is mixed and stirred with the mixed solution of organic acid and inorganic acid, then washed with deionized water, filtered, dried and roasted. The acid-base treatment revival method for S-Zorb waste adsorbent provided by the present invention successively uses alkaline solution and organic acid and inorganic acid mixed solution to treat S-Zorb waste adsorbent. The revival method is simple, the process flow is short, and the operation is flexible. The specific surface area and pore volume of the revived S-Zorb waste adsorbent in the present invention are greatly increased, and the adsorption and desulfurization performance is good.

Description

technical field [0001] The invention relates to an acid-base treatment revival method for S-Zorb waste adsorbent, which belongs to the field of solid waste treatment and application. Background technique [0002] With the increasingly stringent environmental protection regulations, my country's requirements for gasoline sulfur content are becoming more and more stringent. The National V standard requires gasoline sulfur content to be less than 10ppm, and the S-Zorb process is a gasoline deep desulfurization technology that can produce gasoline that meets the requirements. [0003] A large amount of waste adsorbents are produced accordingly. If the waste adsorbents are all treated as waste, the active components such as effective nickel and zinc contained in them will be lost relatively large, and the landfill of the waste will occupy a large amount of land resources, and it will If it enters the water with the natural circulation, it will pollute the soil and water resources...

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): B01J20/34
Inventor 许本静刘欣梅辛颖刘龙妹阎子峰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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