Method for stabilizing heat exchange tubes in the andrussow process

A technology of heat exchangers and sleeves, applied in heat exchange equipment, chemical instruments and methods, fixed tubular conduit assemblies, etc., can solve problems such as hindering commercial viability, excessively expensive sleeves, process efficiency and productivity reduction, etc.
CN103864104BActive Publication Date: 2018-03-02INVISTA TEXTILES (U K) LTD
10 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INVISTA TEXTILES (U K) LTD
Publication Date
2018-03-02

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention relates to an improved method of producing hydrogen cyanide, said method involving a heat exchanger comprising a plurality of tubes, wherein each of said plurality of tubes comprises: a ceramic sleeve, each of said sleeves comprising an isolation layer surrounding at least a portion of said sleeve; and one or more spacers, wherein at least one of said one or more ceramic spacers is placed between said tubes The upper part of the inlet surrounds the sleeve, and the ceramic sleeve is spaced apart from the tube. The invention further relates to a reaction apparatus for the production of hydrogen cyanide, said apparatus relating to a heat exchanger comprising a plurality of tubes, wherein each of said plurality of tubes comprises: a ceramic ceramic extending through the inlet of said tube a sleeve, each of the sleeves comprising an isolation layer surrounding at least a portion of the sleeve; and one or more spacers, wherein at least one of the one or more ceramic spacers is located between the The upper portion of the inlet surrounds the sleeve, and the ceramic sleeve is spaced from the tube. The invention further relates to heat exchangers used in the improved process and reaction apparatus.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] Cross References to Related Applications

[0002] This application claims priority to US Application 61 / 738,775, filed December 18, 2012, the entire contents and disclosure of which is incorporated herein. technical field

[0003] The present invention relates to a method of producing a chemical reaction product, such as hydrogen cyanide. More particularly, the present invention relates to an improved and commercially advantageous process for the production of hydrogen cyanide comprising a heat exchanger comprising a plurality of tubes through which crude hydrogen cyanide flows However, each of the plurality of tubes includes a ceramic sleeve extending through the inlet of the tube, wherein the ceramic sleeve is spaced from the tube, ie not in contact with the tube. Background technique

[0004] Hydrogen cyanide ("HCN") is traditionally produced on an industrial scale according to the Andrussow process or the BMA process. (See eg Ullman's Encyclopedia of Industrial...

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