Basket-like device having wall insulation
A technology of heat insulation layer and reactor, applied in inorganic chemistry, non-metallic elements, nitric oxide, etc., can solve the problems of increased emission of nitrous oxide and reduced decomposition, etc.
Inactive Publication Date: 2016-08-03
BASF SE
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In this process, the above-mentioned funnel-shaped recesses in this packing of the nitrous oxide decomposition catalyst thus lead to a reduction in the decomposition of nitrous oxide in the peripheral region of the catalyst bed, which in turn often leads to undesired nitrous oxide in the production plant. increased emissions
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0129] Example 1 (according to the invention)
[0130] In a continuous process, the ammonia-air mixture was converted as described above, a 100 mm thick thermal insulation layer S according to the invention being used in plant D as described above.
[0131] The peripheral area of device D has only a small funnel-shaped recess in the form of a 45 mm deep pit in the catalytically active filling, the height of which is still 105 mm in the peripheral area of device D (150 mm before the start of the experiment). ).
[0132] The measured laughing gas concentration was 411 ppm of laughing gas below the almost funnel-shaped recess at the take-off point 3, and 188 ppm at the take-off point 2, so that in device D and downstream below it The average measured laughing gas concentration downstream of the heat exchanger was 204 ppm.
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
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a device (D), which is accommodated in a reactor (R) and which contains a gas- and / or liquid-permeable bottom (B), in the edge region of which a lateral boundary (W) is arranged, which completely surrounds the bottom (B) and forms a volume (V), which is partially or completely filled with catalytic and / or non-catalytic shaped bodies, at least one network made of noble metal and / or non-noble metal possibly being located on the side lying opposite the bottom (B) upstream, characterized in that a thermally insulating layer (S) is located at least on a part of the surface of the inside of the lateral boundary (W) of the device (D), the material for the thermally insulating layer (S) being selected from the group comprising ceramic material, microporous material, and silicate fibers.
Description
technical field [0001] The invention relates to a device D accommodated in a reactor R, preferably a high-temperature reactor, a device D comprising the reactor R, a use scheme of the device D, respectively defined in the claims A scheme of use of a reactor R comprising the device D and a method of using the device D for the production of nitrogen oxides or nitric acid. Background technique [0002] The device contained in the reactor, for example in the form of a basket, usually consists of a heat-conducting material such as a metal or a metal alloy, for example steel, for reasons of construction or strength, when the reactor is heated, for example, to operating temperature or when the It expands when heated up due to the heat of reaction and contracts when the reactor cools down. [0003] When such devices contain a mobile, granular, eg pouring content of cylindrical or star-shaped catalyst particles, due to the difference in thermal expansion between the device and said ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/28B01J8/00B01J8/02
CPCC01B21/38B01J8/008B01J8/025B01J8/0285B01J2208/00495B01J2208/00814B01J2208/00884C01B21/20C01B21/265C01B21/28
Inventor G·奥尔贝特H·弗里德里希A·韦尔弗特R·库恩T·伦克W·格美内尔
Owner BASF SE