Catalyst transfer pipe plug detection

Patent metadata

Field	Value
Publication number	US-9968899-B1
Application number	US-201715581989-A
Country	US
Kind code	B1
Filing date	Apr 28, 2017
Priority date	Apr 28, 2017
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

Apparatuses and methods are disclosed for detecting catalyst transfer pipe plugging in a chemical plant or petrochemical plant or refinery. The catalyst transfer pipe may extend from a reactor to a catalyst collector and enable the flow of catalyst from the reactor to the catalyst collector. Specifically, one or more sensors affixed to a catalyst transfer pipe may collect sensor data for analysis. Based on one or more detected changes in the sensor data outside a range, a data collection platform may send one or more alerts and/or send one or more signals to a control platform to adjust a flow rate, a pressure differential, or perform another action to clear a developing catalyst buildup and thereby attempt to avoid a catalyst transfer pipe from becoming plugged.

First claim

What is claimed is:

1. A system for preventing catalyst-transfer-pipe plugging, the system comprising:
a reactor configured for a dehydrogenation process, wherein the reactor is configured for use with a solid catalyst;
a catalyst collector comprising a control valve, the catalyst collector configured to collect the solid catalyst;
a plurality of catalyst transfer pipes extending from the reactor to the catalyst collector, the plurality of catalyst transfer pipes configured to enable flow of the solid catalyst from the reactor to the catalyst collector;
one or more sensors affixed to an outside of a catalyst transfer pipe of the plurality of catalyst transfer pipes;
a data collection platform comprising:
one or more processors of the data collection platform;
a first communication interface in communication with the one or more sensors affixed to the catalyst transfer pipe; and
non-transitory computer-readable memory of the data collection platform storing executable instructions that, when executed, cause the data collection platform to:
receive sensor data from the one or more sensors affixed to the catalyst transfer pipe, the sensor data comprising a plurality of data points; and
transmit the sensor data;

a data analysis platform comprising:
one or more processors of the data analysis platform;
a second communication interface; and
non-transitory computer-readable memory of the data analysis platform storing executable instructions that, when executed, cause the data analysis platform to:
receive the sensor data from the data collection platform;
analyze the sensor data to determine a flow rate through the catalyst transfer pipe of the plurality of catalyst transfer pipes; and
based on analyzing the sensor data to determine the flow rate through the catalyst transfer pipe, transmit a command to adjust the flow rate through the catalyst transfer pipe; and

a control platform comprising:
one or more processors of the control platform;
a third communication interface; and
non-transitory computer-readable memory of the control platform storing executable instructions that, when executed, cause the control platform to:
receive the command to adjust the flow rate through the catalyst transfer pipe of the plurality of catalyst transfer pipes; and
send a command to adjust the flow rate through the catalyst transfer pipe of the plurality of catalyst transfer pipes by adjusting the control valve of the catalyst collector.

2. The system of claim 1 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
using the sensor data, compute a first time period of first sensor information corresponding to the catalyst transfer pipe; and
determine whether the first time period differs from a second time period of second sensor information corresponding to a different catalyst transfer pipe,
wherein transmitting the command to adjust the flow rate through the catalyst transfer pipe is based on the first time period differing from the second time period by more than a first threshold.

3. The system of claim 1 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
compute a first peak-to-valley amplitude of first sensor information corresponding to the catalyst transfer pipe; and
determine whether the first peak-to-valley amplitude differs from a second peak-to-valley amplitude of second sensor information corresponding to the catalyst transfer pipe, the second sensor information received from a same sensor as the first sensor information,
wherein transmitting the command to adjust the flow rate through the catalyst transfer pipe is based on the second peak-to-valley amplitude differing from the first peak-to-valley amplitude by more than a threshold.

4. The system of claim 1 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
determine a mean time period corresponding to the plurality of catalyst transfer pipes; and
using the sensor data, determine whether a time period for the catalyst transfer pipe of the plurality of catalyst transfer pipes differs from the mean time period,
wherein transmitting the command to adjust the flow rate through the catalyst transfer pipe is based on the time period for the catalyst transfer pipe differing from the mean time period by more than a first threshold.

5. The system of claim 4 , wherein transmitting the command to adjust the flow rate through the catalyst transfer pipe is further based on the time period for the catalyst transfer pipe differing from the mean time period by more than the first threshold for more than a threshold number of cycles.

6. The system of claim 4 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
using the sensor data, determine whether time periods respectively corresponding to a majority of the plurality of catalyst transfer pipes differ from the mean time period by more than the first threshold,
wherein transmitting the command to adjust the flow rate through the catalyst transfer pipe is based on the time periods respectively corresponding to the majority of the plurality of catalyst transfer pipes not differing from the mean time period by more than the first threshold.

7. The system of claim 1 , wherein adjusting the flow rate comprises increasing a pressure differential across the catalyst transfer pipe, the pressure differential determined based on a first pressure at an inlet of the catalyst transfer pipe and a second pressure at an outlet of the catalyst transfer pipe.

8. The system of claim 1 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
based on the analyzed sensor data, trigger an alarm to indicate that the catalyst transfer pipe is plugging.

9. The system of claim 1 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
generate, for display, a representation of one or more of the plurality of catalyst transfer pipes; and
in response to determining that the catalyst transfer pipe of the plurality of catalyst transfer pipes is experiencing plugging, update the representation of the plurality of catalyst transfer pipes to visually show that the catalyst transfer pipe of the plurality of catalyst transfer pipes is experiencing plugging.

10. The system of claim 1 , wherein the one or more sensors comprise a pressure sensor.

11. The system of claim 1 , wherein the one or more sensors comprise a flow sensor.

12. The system of claim 1 , wherein the one or more sensors comprise a temperature sensor.

13. The system of claim 2 , the non-transitory computer-readable memory of the data analysis platform storing further executable instructions that, when executed, cause the data analysis platform to:
compute a first peak-to-valley amplitude of the first sensor information corresponding to the catalyst transfer pipe; and
determine whether the first peak-to-valley amplitude differs from a second peak-to-valley amplitude of third sensor information corresponding to the catalyst transfer pipe, the third sensor information received from a same s

Assignees

• Uop Llc

Inventors

• Gellaboina Mahesh Kumar
• Lattanzio Louis A

Classifications

• G05B15/02

  electric · CPC title

• B01J2208/00761

  Discharging · CPC title

• B01J2208/00548

  Flow · CPC title

• B01J8/0015 Primary

  Feeding of the particles in the reactor; Evacuation of the particles out of the reactor · CPC title

• B01J2208/00539

  Pressure · CPC title