Method and system for testing a condition of a catalyst

Patent metadata

Field	Value
Publication number	US-9360463-B1
Application number	US-201514633510-A
Country	US
Kind code	B1
Filing date	Feb 27, 2015
Priority date	Feb 27, 2015
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A method for testing a condition of a catalyst is provided. The method includes providing a gas source in communication with the catalyst. The method also includes passing compressed gas from the gas source over the catalyst at normal operating temperature. The method further includes invoking a reaction with the catalyst based on the passage of the compressed gas. The method includes measuring a performance of the catalyst based on the reaction.

First claim

What is claimed is:

1. A diagnostic system for testing a condition of a catalyst, the diagnostic system comprising:
a gas source including a first gas source of compressed air and a second gas source of compressed hydrogen gas;
a flow control device operatively coupled to the gas source and the catalyst, the flow control device configured to pass compressed gas from the gas source over the catalyst at normal operating temperature; and
a measuring device coupled to the catalyst, the measuring device configured to measure a performance of the catalyst based on a reaction invoked with the catalyst on passage of the compressed gas over the catalyst.

2. The diagnostic system of claim 1 , wherein the second gas source includes a mixture of compressed hydrogen gas and compressed nitrogen gas.

3. The diagnostic system of claim 1 , wherein the gas source further includes a third gas source of a mixture of compressed nitric oxide gas and compressed nitrogen gas.

4. The diagnostic system of claim 1 , wherein the measuring device is further configured to measure a thermal conductivity of a residual gas flow.

5. The diagnostic system of claim 1 , wherein the measuring device is further configured to determine a current temperature of the catalyst prior to the reaction.

6. The diagnostic system of claim 5 , wherein the measuring device is further configured to measure an increase in a temperature of the catalyst from the current temperature of the catalyst.

7. The diagnostic system of claim 1 , wherein the measuring device is further configured to measure a temperature of a residual gas flow.

8. The diagnostic system of claim 1 , wherein the measuring device is further configured to:
compare the measured performance of the catalyst with a predetermined metric; and
determine a life of the catalyst based on the comparison.

9. The diagnostic system of claim 8 further comprising an output module coupled to the measuring device, the output module configured to provide a notification of the determined life of the catalyst.

Assignees

• Caterpillar Inc

Inventors

• Ratts Joshua
• Williams Wilce Damion
• Clayton Jr Robert D

Classifications

• B01J19/00

  Chemical, physical or physico-chemical processes in general; Their relevant apparatus · CPC title

• G01N31/10 Primary

  using catalysis · CPC title

• G01N31/00

  Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods · CPC title

• B01J19/0046

  Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays (synthesis methods per se C40B50/00) · CPC title

• B01J33/00

  Protection of catalysts, e.g. by coating · CPC title