A device and method for jointly evaluating catalyst denitrification and mercury removal performance

A mercury removal performance and catalyst technology, applied in the direction of chemical analysis using catalysis, can solve problems such as complex flue gas composition

Inactive Publication Date: 2015-11-18
CHONGQING UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many kinds of denitrification catalysts and the composition of flue gas is complex. What kind of catalyst has both high denitrification activity and strong elemental mercury oxidation activity remains to be further studied.

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 device and method for jointly evaluating catalyst denitrification and mercury removal performance
  • A device and method for jointly evaluating catalyst denitrification and mercury removal performance
  • A device and method for jointly evaluating catalyst denitrification and mercury removal performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A device for jointly evaluating catalyst denitrification and mercury removal performance, including pipelines I to VII, preheating mixer 8, three-way ball valves I to III, flue gas analyzer 15 and mercury analyzer 16, and has two air inlets And a catalytic reactor 12 with a gas outlet. The catalytic reactor 12 is a vessel containing a catalyst therein. The gas entering from any inlet of the catalytic reactor 12 flows through the catalyst (usually fixed on the carrier), and then is discharged from the gas outlet.

[0027] The inlet of the pipeline I1 is connected to NH 3 The gas source and outlet are connected to the first air inlet of the catalytic reactor 12 .

[0028] The inlet connection of the pipeline II2 is O 2 The gas source and the outlet are connected to the air inlet of the preheating mixer 8 . The inlet of the pipeline III3 is connected to the NO gas source, and the outlet is connected to the air inlet of the preheating mixer 8 . The inlet connection N o...

Embodiment 2

[0034] In this example, the device described in Example 1 is used to jointly evaluate the method of catalyst denitrification and mercury removal performance, including the following steps:

[0035] 1) Adjust the three-way ball valve I9 ​​so that A 1 Mouth and A 2 Port connection, A 3 The port is closed, adjust the three-way ball valve Ⅱ10, so that B 1 Mouth, B 2 Mouth and B 3 The ports are connected to each other, adjust the three-way ball valve Ⅲ11 so that C 2 Mouth and C 3 port connection, C 1 The mouth is closed. That is, the mixed gas coming out of the preheating mixer 8 directly enters the flue gas analyzer 15 and the mercury analyzer 16 without passing through the catalyst 13 .

[0036] 2) Feed O into the preheating mixer 8 through pipelines Ⅱ~Ⅷ 2 , NO, N 2 , mercury vapor, HCl and SO 2 gas. At this moment, the one-way valve 22 on the pipeline I is closed. The flue gas analyzer 15 detects the initial concentration C of NO NO,in , the mercury analyzer 16 det...

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 aim of the invention is to provide a device and a method for joint evaluation of denitration and demercuration performances of a catalyst. The device comprises pipelines I, II, III, IV, V and VII, a pressure reducing valve, a filter, a mass flowmeter, a one-way valve, a preheating mixer, an electric heating furnace, three-way ball valves I, II and III, a flue gas analyzer, a mercury analyzer, and a catalytic reactor with two gas inlet and a gas outlet. Actual conditions of a factory are simulated by production of flue gases with different ratios. The catalyst with good effects both on denitration and demercuration specific to a specific flue gas can be selected by replacing of different types of catalysts.

Description

technical field [0001] The invention belongs to the technical field of detecting the denitrification activity and mercury oxidation activity of a catalyst used in a denitrification and mercury removal system of a coal-fired power plant Background technique [0002] Nitrogen oxides NOx and mercury are the main air pollutants emitted by coal-fired power plants. The emission of nitrogen oxides will cause environmental problems such as acid rain, greenhouse effect and ozone layer destruction, and seriously endanger human health and social development. [0003] The Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China jointly issued the GB13223-2011 Air Pollutant Emission Standard for Thermal Power Plants. Its compound pollutant emission limit (not exceeding 30μg / Nm), my country's latest air pollutant emission standard for thermal power plants (GB13223-2011) stipulates that the mercur...

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): G01N31/10
Inventor 杨强杨剑赵冬刘清才孙健贺媛媛刘浪兰苑培孔明李琳徐敏人
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap