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

Absorbent for removing trace benzene in carbon dioxide and preparation method thereof

A carbon dioxide and adsorbent technology, applied in the field of resources and environment, can solve the problems of high energy consumption, low purification degree, and catalyst failure of the catalytic combustion method, and achieve the effects of improving the utilization rate of metal atoms, high purification degree, and fast adsorption rate.

Inactive Publication Date: 2009-02-11
DALIAN UNIV OF TECH
View PDF2 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The catalytic combustion method consumes a lot of energy, especially when CO 2 Middle C 6 h 6 When the content is very low, the purification degree of this method is low, and the catalyst is prone to failure, and the current catalytic combustion method is basically carried out in a nitrogen atmosphere, such as documents ZL02121005.5 and ZL99113874.0. In addition, biological methods, photocatalytic methods and low temperature Plasma methods are still in the stage of laboratory research

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

[0036] Accurately weigh 90g of HY raw powder and 10g of pseudoboehmite (both on a dry basis); fully mix the two with a 100-200 mesh sieve, add 5% nitric acid, stir into sand, and squeeze Machine extruded into strips with a diameter of 2.5mm; after drying at room temperature, transfer to an oven, dry at 110°C for 12 hours, put into a muffle furnace, and heat up to 550°C at room temperature at a constant temperature of 10°C / min for 5 Hours, a hard white alumina-HY composite carrier (molded molecular sieve P) was prepared.

[0037] Accurately weigh 14g Fe(NO 3 ) 3 9H 2 O, add 60ml of deionized water to dissolve, and impregnate 99.7g of the above-mentioned composite carrier with this solution. After impregnation, place it at room temperature for 5 hours, transfer it to an oven, and dry it at 115°C for 12 hours, then put it into a muffle furnace, heat it up to 500°C at room temperature at a rate of 10°C / min, and roast it at a constant temperature for 3 hours to prepare the adsor...

Embodiment 2

[0039] Accurately weigh 10gCu(NO 3 ) 2 ·3H 2 O, add 60ml of deionized water to dissolve, impregnate 99.7g of carrier P with this solution. After impregnation, place it at room temperature for 5 hours, transfer it to an oven, and dry it at 115°C for 12 hours, then put it into a muffle furnace, heat it up to 500°C at room temperature at a rate of 10°C / min, and roast it at a constant temperature for 3 hours to prepare the adsorbent Agent B1. Place B1 in H 2 At a flow rate of 15ml / min, the temperature was programmed to rise at 1°C / min at room temperature to 270°C for 7 hours for reduction to prepare adsorbent B.

Embodiment 3

[0041] The porous carbon material was washed to neutral with deionized water, dried at 110° C. for 12 hours, and 25 g was accurately weighed for use (carrier Q).

[0042] Accurately weigh 25mgAgNO 3, add 25ml of ammonia water to dissolve, impregnate the above carrier with this solution. After impregnation, it was placed at room temperature for 6 hours, then transferred to an oven at 110°C to dry for 12 hours, then placed in a muffle furnace, programmed to heat up to 145°C at room temperature at 1°C / min, and roasted at a constant temperature for 3 hours to obtain Adsorbent C.

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 absorbent for removing trace benzene in carbon dioxide, and a preparation thereof, pertaining to the field of resource and environment technology. The method is characterized in that: the absorbent takes porous carbon materials or microporous molecular sieves as a carrier, and loads active components, such as Fe, Ni, Co, Cu, Ag, Pd and the like, by methods such as equivalent-volumetric impregnation-thermal decomposition or equivalent-volumetric impregnation-high temperature roasting and the like. The effect and benefits of the invention are that the absorbent has the advantages of high degree of purification, good thermal stability, large adsorption capacity, strong operation ability and excellent selection performance, being capable of reducing benzene in carbon dioxide to be lower than 0.02ppmv. The absorbent can be heated and purged in the air, nitrogen gas, or the carbon dioxide to carry out regeneration after full adsorption, thereby providing a key technology for the preparation of carbon dioxide used in food and having wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of resources and environment, and relates to an adsorbent for removing trace amounts of benzene in carbon dioxide or other gases and a preparation method thereof. Background technique [0002] At present, the pollution of carbon dioxide waste gas to the atmosphere is becoming more and more serious, so it is of great significance to recycle carbon dioxide resources for chemical, mechanical, food, agricultural and other fields. food grade CO 2 Not only an important additive in the food industry, but also a CO 2 The polyester industry and the medical field have attracted more and more attention. Recovery of CO from fertilizer plant and ammonia tail gases 2 Often accompanied by traces of benzene. Benzene is highly toxic and has harmful effects on the central nervous system and hematopoietic system. Long-term exposure to benzene solvents can irritate the skin and mucous membranes and cause lesions. The Inter...

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
IPC IPC(8): B01J20/02B01J20/18B01J20/20B01J20/32C01B31/20B01D53/04C01B32/50
CPCY02P20/151
Inventor 李玉雪张永春
Owner DALIAN UNIV OF TECH
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