Unlock instant, AI-driven research and patent intelligence for your innovation.

Titanium oxysulfate loaded niobium pentoxide high-temperature denitration catalyst

Active Publication Date: 2021-11-23
ZHEJIANG UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this catalyst leads to NH at high temperature 3 The deep oxidation produces a large amount of by-product N 2 O, which degrades the denitrification performance and lowers the N 2 selectivity, and V 2 o 5 Biotoxic, difficult to recycle

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
  • Titanium oxysulfate loaded niobium pentoxide high-temperature denitration catalyst
  • Titanium oxysulfate loaded niobium pentoxide high-temperature denitration catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of high-temperature denitration catalyst of niobium pentoxide loaded on titanyl sulfate and preparation method thereof, comprising the following implementation steps: (1) at first 10g of TiOSO 4 2H 2 O with 2.47g of C 10 h 5 NbO 20 After mixing, put them into a ball mill jar to prepare tungsten carbide grinding balls of different quantities and sizes; (2) set the speed of the ball mill to 300r / min, and mill for 120 minutes; (3) calcinate the ball milled mixture for 30 minutes in an air atmosphere get TiOSO 4 Load Nb 2 o 5 catalyst.

Embodiment 2

[0026] (1) First put 10g of TiOSO 4 2H 2 O with 7.41 g of C 10 h 5 NbO 20 After mixing, put them into a ball mill jar, and prepare tungsten carbide grinding balls of different quantities and sizes; (2) set the speed of the ball mill to 300r / min, and mill for 120 minutes; (3) calcinate the ball milled mixture for 5 hours in an air atmosphere After getting TiOSO 4 Load Nb 2 o 5 catalyst.

Embodiment 3

[0028] (1) First put 10g of TiOSO 4 2H 2 O with 1.235g of C 10 h 5 NbO 20 After mixing, put them into a ball mill jar, and prepare tungsten carbide grinding balls of different quantities and sizes; (2) set the speed of the ball mill to 300r / min, and mill for 120 minutes; (3) calcinate the ball milled mixture for 5 hours in an air atmosphere After getting TiOSO 4 Load Nb 2 o 5 catalyst.

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 titanium oxysulfate loaded niobium pentoxide high-temperature denitration catalyst. The high-temperature denitration catalyst adopts titanium oxysulfate (TiOSO4) as a carrier of a niobium pentoxide (Nb2O5) catalyst; and the strong acidity of the surface of TiOSO4 is utilized to ensure that NH3 can still be effectively adsorbed at high temperature, so that the high-temperature SCR reaction is facilitated. On the basis, niobium pentoxide (Nb2O5) is loaded on a titanium oxysulfate (TiOSO4) carrier, and by utilizing the relatively weak oxidation capacity of Nb2O5, the deep oxidation reaction of NH3 at high temperature is successfully inhibited while the effective catalytic denitration reaction is ensured, and the high-temperature denitration activity and excellent nitrogen selectivity of the catalyst at 300-500 DEG C are ensured.

Description

technical field [0001] The invention belongs to the field of environmental protection technology and denitration catalysis, and in particular relates to a high-temperature denitration catalyst loaded with niobium pentoxide on titanyl sulfate. Background technique [0002] NO x Excessive emissions have brought a series of environmental problems such as acid rain, photochemical smog, and greenhouse effect, while NO X It also has certain biological toxicity, which is not conducive to human health. At present, social development has put forward higher requirements for environmental protection, and the emission standards of nitrogen oxides are becoming more and more stringent, which requires more advanced nitrogen oxides removal technology. At present, the most widely used commercial application is SCR denitrification technology, the core of which is V 2 o 5 -WO 3 / TiO 2 Catalyst, which has nearly 100% catalytic performance at 300-400°C. However, this catalyst leads to NH ...

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 Applications(China)
IPC IPC(8): B01J27/053B01J37/00B01J37/08B01D53/86B01D53/56
CPCB01J27/053B01J37/0036B01J37/082B01D53/8628
Inventor 王勇薛薇王飞杨杭生
Owner ZHEJIANG UNIV