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

A kind of refinery waste gas desulfurizer, its preparation method and application

A waste gas desulfurization and refinery technology, which is applied in the field of multifunctional desulfurizers and desulfurizers, can solve the problems of unusable and one-time removal of sulfide, and achieve the effects of enhancing adsorption, enhancing stability, and increasing adsorption capacity

Active Publication Date: 2017-11-14
SHENYANG SANJUKAITE CATALYST
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the defect that the desulfurizer in the prior art cannot be used for one-time removal of sulfide in refinery waste gas because it can only remove one or two kinds of sulfide, and then provides a desulfurizer that can simultaneously desulfurize A desulfurizer with large sulfur capacity and high precision for removing hydrogen sulfide, mercaptan, sulfide, disulfide, carbonyl sulfide and other sulfides in refinery waste gas, its preparation method and application

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

[0028] The preparation method of the refinery waste gas desulfurizer described in the present embodiment comprises the following steps:

[0029] (1) 25wt% ammoniacal liquor 72g is dissolved in 360ml dehydrated alcohol, forms the alcoholic solution of ammonia; Take by weighing 200g apricot shell gac, its specific surface area is 810m 2 / g, the pore volume is 0.51ml / g, and the pore diameter is 2.1nm. Add activated carbon to the alcohol solution of ammonia, stir at room temperature for 5h, vacuum-dry at 120°C, and roast at 950°C for 1h under nitrogen atmosphere to obtain modified activated carbon;

[0030] (2) 9.72g copper nitrate, 11.68g nickel nitrate and 1.00g cerium nitrate are dissolved in 120ml deionized water to form a Cu-Ni-Ce composite solution; modified activated carbon is placed in the Cu-Ni-Ce composite solution, and Ultrasonic impregnation at 25°C for 2 hours, drying at 120°C for 5 hours, and calcination at 400°C for 2 hours under nitrogen atmosphere;

[0031] (3) W...

Embodiment 2

[0035] (1) Dissolve 75.6g of urea in 378ml of absolute ethanol to form a nitrogen-containing alcohol solution; weigh 200g of coal-based columnar activated carbon, and its specific surface area is 920m 2 / g, the pore volume is 0.53ml / g, and the pore diameter is 2.7nm; the activated carbon is placed in a nitrogen-containing alcohol solution, stirred at room temperature for 5h, then vacuum-dried at 120°C, and roasted at 950°C for 1h under a nitrogen atmosphere to obtain modified activated carbon ;

[0036] (2) 19.44g copper nitrate, 15.57g nickel nitrate and 2.52g cerium nitrate are dissolved in 126ml deionized water to form a Cu-Ni-Ce composite solution; modified activated carbon is placed in the Cu-Ni-Ce composite solution, and Ultrasonic impregnation at 25°C for 6 hours, drying at 120°C for 5 hours, and calcination at 500°C for 4 hours under nitrogen atmosphere;

[0037] (3) Take by weighing 2.34g sulfonated cobalt phthalocyanine and N,N-dimethylformamide 3.78g, be all dissol...

Embodiment 3

[0041] (1) Dissolve 81.6g of melamine in 408ml of ethanol to form a nitrogen-containing alcoholic solution; weigh 200g of wooden columnar activated carbon, and its specific surface area is 1090m 2 / g, the pore volume is 0.74ml / g, the pore diameter is 2.3nm, the activated carbon is placed in nitrogen-containing alcohol solution, stirred at room temperature for 5h, then vacuum-dried at 120°C, and roasted at 950°C for 1h under nitrogen atmosphere to obtain modified activated carbon ;

[0042] (2) 38.88 g of copper nitrate, 23.36 g of nickel nitrate and 4.04 g of cerium nitrate are dissolved in 136 ml of deionized water to form a Cu-Ni-Ce composite solution; ℃ ultrasonic impregnation for 8 hours, drying at 120℃ for 5 hours, and roasting at 600℃ for 6 hours under nitrogen atmosphere;

[0043] (3) 2.88g of quaternary ammonium alkalized cobalt phthalocyanine and 4.08g of dimethyl sulfoxide are dissolved in 408ml of 5wt% ammonia water to form a cobalt-containing impregnation solution...

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 provides a refinery exhaust gas desulfurizer, its preparation method and application. The desulfurizer is composed of the following components: 1.6-6.4wt% CuO, 1-3wt% NiO, 0.2-0.8wt% CeO2, 0.1-0.5wt% cobalt phthalocyanine substances, and the balance is activated carbon treated with nitrogen-containing compounds. The preparation method adopts nitrogen-containing compounds to modify the activated carbon, which improves the alkalinity and polarity of the surface of the activated carbon, and enhances the adsorption of acidic sulfides; then the oxides of copper, nickel, and cerium are loaded on the modified activated carbon On the surface, the alkalinity of the activated carbon surface is further improved; finally, the phthalocyanine cobalt is loaded, and the mercaptan in the refinery exhaust gas is oxidized to the corresponding disulfide by using its oxidation ability, which is adsorbed by the activated carbon. Thus, the refinery exhaust gas desulfurizer prepared by the present invention realizes the one-time and efficient removal of sulfides such as hydrogen sulfide, carbonyl sulfide, sulfide, mercaptan, and disulfide in the refinery exhaust gas through adsorption, and is exported The total sulfur concentration is less than 2mg / m3, and the breakthrough sulfur capacity is as high as 32%.

Description

technical field [0001] The invention relates to a desulfurizer, its preparation method and application, in particular to a multifunctional desulfurizer suitable for refinery waste gas, its preparation method and application, and belongs to the field of desulfurization purification. Background technique [0002] With the aggravation of the trend of heavy crude oil, high-sulfur crude oil has become the main raw material of most refineries in my country, resulting in a serious excess of sulfur content in refinery exhaust gas, causing great damage to the environment. Therefore, how to solve the sulfide in the refinery exhaust gas is an urgent problem that the petrochemical industry needs to solve. [0003] Refinery waste gas is mainly distributed in sulfur recovery units, sewage stripping units, atmospheric and vacuum units, desulfurization units, coking units, oil tank farms and vehicle loading facilities. The sulfides in refinery exhaust gas mainly include hydrogen sulfide, l...

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): B01D53/81B01D53/48
Inventor 蔡大妮赵素云张婷单红飞许灵瑞
Owner SHENYANG SANJUKAITE CATALYST
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