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

Catalyst for treating waste gas generated by roasting silicoaluminophosphate molecular sieve and preparation method thereof

A silicon-aluminum-phosphorus molecular sieve and catalyst technology is applied in the field of chemical industry, waste gas treatment in the roasting process of silicon-aluminum-phosphorus molecular sieve, and can solve problems such as harsh environmental conditions, crowd hazards, air pollution, etc., achieving high mechanical strength, easy processing and filling, Highly selective effect

Inactive Publication Date: 2018-11-16
CHINA TIANCHEN ENG
View PDF19 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the drying and roasting process of silicon aluminum phosphorus molecular sieves takes a long time, and a large amount of waste gas will be generated during the roasting process. The components of the waste gas mainly include carbon monoxide, carbon dioxide, nitrogen oxides, some amines, oxygen, nitrogen, etc. The waste gas memory The direct discharge of the unfriendly gas will cause the local environment to be bad, and at the same time pollute the atmosphere and cause harm to the people around the factory area. Therefore, to provide a feasible treatment plan for the waste gas has become an urgent problem in this field. The problem

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
  • Catalyst for treating waste gas generated by roasting silicoaluminophosphate molecular sieve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A catalyst for treating exhaust gas in the roasting of silicon aluminum phosphorus molecular sieves, including a substrate support, a carrier coating and a loaded active component. The outer layer of the substrate support is a carrier coating, and most of the loaded active components are attached to the carrier The outer layer of the coating, only a small amount will enter the interior of the washcoat.

[0029] The substrate support is composed of ceramics, cordierite, and silicon carbide; the carrier coating is composed of an alumina coating with a composite oxide of lanthanum oxide and cerium oxide; the active components of the load are palladium oxide and ruthenium. mixture of oxides.

[0030] The cross-section of the substrate support body is a regular hexagon, and the interior of the substrate support body is penetrated by a passage whose cross-section is circular.

[0031] This case also protects a preparation method of the above-mentioned catalyst, which is prep...

Embodiment 2

[0037] A catalyst for treating exhaust gas in the roasting of silicon aluminum phosphorus molecular sieves, including a substrate support, a carrier coating and a loaded active component. The outer layer of the substrate support is a carrier coating, and most of the loaded active components are attached to the carrier The outer layer of the coating, only a small amount will enter the interior of the washcoat.

[0038] The substrate support is composed of silicon carbide, silicon dioxide, and alumina; the carrier coating is composed of an alumina coating of a composite oxide added with tin oxide and yttrium oxide; the active component of the load is platinum oxide, A mixture of rhodium oxides.

[0039] The cross-section of the substrate support body is a regular square, and the interior of the substrate support body is penetrated by a passage whose cross-section is triangular.

[0040] This case also protects a preparation method of the above-mentioned catalyst, which is prepa...

Embodiment 3

[0046] A catalyst for treating exhaust gas in the roasting of silicon aluminum phosphorus molecular sieves, including a substrate support, a carrier coating and a loaded active component. The outer layer of the substrate support is a carrier coating, and most of the loaded active components are attached to the carrier The outer layer of the coating, only a small amount will enter the interior of the washcoat.

[0047] The substrate support is composed of spinel and mullite; the carrier coating is composed of alumina coating with composite oxides of yttrium oxide and cobalt oxide; the active components of the load are palladium oxide, gold oxide mixture of things.

[0048] The cross-section of the substrate support body is a regular hexagon, and the interior of the substrate support body is penetrated by a passage with a square cross-section.

[0049] This case also protects a preparation method of the above-mentioned catalyst, which is prepared by the following method:

[0050...

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

PropertyMeasurementUnit
Conductivityaaaaaaaaaa
The average thicknessaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention provides a catalyst for treating waste gas generated by roasting a silicoaluminophosphate molecular sieve. The catalyst is mainly prepared from a base material support, a carrier coating, and supported active components. The catalyst is mainly used to treat the waste gas generated in the roasting process of the silicoaluminophosphate molecular sieve by the active components loaded onthe surface of the voids in the catalyst for converting the waste gas into non-toxic and pollution-free gas so as to achieve the emission standard in the process. The catalyst has high mechanical strength, large specific surface area, high catalytic activity and high selectivity, and is convenient in processing and filling.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to the field of waste gas treatment in the roasting process of a silicon-aluminum-phosphorus molecular sieve. Background technique [0002] Propylene is currently the most important bulk chemical product in the world and one of the basic chemical raw materials supporting my country's economic development. It can be used to prepare a variety of basic organic raw materials. For example, propylene oxide, acrolein, propenyl alcohol, isopropanol, carbon tetrachloride, butanol and the like can be prepared. In recent years, due to the demand for downstream derivatives (especially polypropylene), the demand for propylene has increased significantly. Due to the shortage of domestic propylene resources, it is far from meeting the needs of the domestic market, and the domestic self-sufficiency rate has dropped sharply, requiring a large amount of imports. With the envir...

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): B01J23/63B01J23/89B01J37/02B01D53/86
CPCB01D53/86B01D2258/02B01J23/002B01J23/63B01J23/894B01J37/0207B01J37/0234B01J2523/00B01J2523/31B01J2523/3706B01J2523/3712B01J2523/821B01J2523/824B01J2523/36B01J2523/43B01J2523/822B01J2523/828B01J2523/19B01J2523/845
Inventor 刘俊生王海国王卓然李欢石华张洪江
Owner CHINA TIANCHEN ENG
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