System for evaluating performance of carbon dioxide separation membrane module and device therefor

Patent metadata

Field	Value
Publication number	US-10821405-B2
Application number	US-201816316463-A
Country	US
Kind code	B2
Filing date	Jan 5, 2018
Priority date	Jul 28, 2017
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A carbon dioxide (CO2) separation membrane module performance evaluation system and device may include a simulated gas supply line configured to simulate a gas composition of boiler exhaust gas and supply the gas to a module unit part; the module unit part including a CO2 separation membrane module and configured to cause the gas to permeate through the CO2 separation membrane module and separately discharge permeated gas, to a permeation line, and separately discharge passed gas to a passage line; a discharge line configured to combine the gases and discharge the combined gas to the outside of the system; an analyzer part configured to collect each of the gas, analyze components thereof, and evaluate performance of the module; a refiner part to remove pollutants; a measurer part to measure a flow rate, a temperature, and a pressure; and a controller part to determine a state of the overall system.

First claim

The invention claimed is:

1. A system for evaluating performance of a carbon dioxide (CO 2 ) separation membrane module, the system comprising:
a simulated gas supply line configured to simulate a gas composition of boiler exhaust gas and supply the simulated gas to a module unit part;
the module unit part including a CO 2 separation membrane module and configured to cause the simulated gas to permeate through the CO 2 separation membrane module and separately discharge permeated gas, which has permeated through the separation membrane, to a permeation line, and separately discharge passed gas, which has failed to permeate through the separation membrane, to a passage line;
a discharge line configured to combine the gases discharged from the permeation line and the passage line and discharge the combined gas to the outside of the system;
an analyzer part configured to collect each of the gas supplied from the supply line to the module unit part, the permeated gas discharged from the module unit part, and the passed gas discharged from the module unit part, analyze components thereof, and evaluate performance of the module;
a refiner part installed in each of the permeation line, the passage line, and the discharge line and configured to remove pollutants from the gases passing through each of the lines;
a measurer part configured to measure a flow rate, a temperature, and a pressure using a measuring instrument installed in each of the gas supply line, the permeation line, the passage line, and the discharge line; and
a controller part configured to determine a state of the overall system on the basis of pieces of information collected from the analyzer part and the measurer part and generate an operation corresponding to a determined result.

2. The system of claim 1 , wherein the simulated gas supply line includes:
a gas supplier part configured to supply one or more gases among CO 2 , nitrogen, oxygen, sulfur oxides (SO x ) and nitrogen oxides (NO x ) to the simulated gas supply line; and
an impurities supplier part configured to supply one or more atmospheric impurities among moisture and dust to the simulated gas supply line.

3. The system of claim 1 , wherein, when collected information satisfies one or more of Equations 11 to 14 below, the controller part performs an operation generating an alarm indicating that the refiner part is abnormal:
C _SO X ≥0.9×SET_ C SO X   [Equation 11]

C _NO X ≥0.9×SET_ C NO X   [Equation 12]

PPI−PPO≥ 0.9×SET_ DPF   [Equation 13]

PRI−PRO≥ 0.9×SET_ DPF,   [Equation 14]

In Equation 11 to 14 wherein
PPI represents a pressure of the permeation line in a front end of the refiner part;
PPO represents a pressure of the permeation line in a rear end of the refiner part;
PRI represents a pressure of the passage line in a front end of the refiner part;
PRO represents a pressure of the passage line in a rear end of the refiner part;
C_SOX represents a SO x concentration measured in the discharge line;
C_NOX represents a NO x concentration measured in the discharge line;
SET_CSOX represents an allowable SO x discharge value;
SET_CNOX represents an allowable NO x discharge value; and
SET_DPF represents an allowable pressure difference value of the refiner parts.

4. The system of claim 3 , wherein, when collected information satisfies one or more of Equations 15 to 18 below, the controller part performs an operation changing system operation conditions:
C _SO X ≥SET_ C SO X   [Equation 15]

C _NO X ≥SET_ C NO X   [Equation 16]

PPI−PPO ≥SET_ DPF   [Equation 17]

PRI−PRO ≥SET_ DPF,   [Equation 18]

In Equation 15 to 18 wherein
PPI represents a pressure of the permeation line in a front end of the refiner part;
PPO represents a pressure of the permeation line in a rear end of the refiner part;
PRI represents a pressure of the passage line in a front end of the refiner part;
PRO represents a pressure of the passage line in a rear end of the refiner part;
C_SOX represents a SO x concentration measured in the discharge line;
C_NOX represents a NO x concentration measured in the discharge line;
SET_CSOX represents an allowable SO x discharge value;
SET_CNOX represents an allowable NO x discharge value; and
SET_DPF represents an allowable pressure difference value of the dust filters.

5. The system of claim 1 , wherein the refiner part removes pollutants from the gases discharged from the CO 2 separation module by using one or more of a dust filter, a moisture cooler, a moisture absorption column, a SO x removal column, and a NO x removal column disposed in each of the permeation line, the passage line, and the discharge line.

6. The system of claim 5 , wherein, when collected information satisfies one or more of Equations 1 to 3 below, the controller part performs an operation generating an alarm indicating that a pressure is abnormal:
PRI−PPI ≤−SET_ DPPR   [Equation 1]

PF≥ 0.9×SET_ PM   [Equation 2]

PF−PRI≥ 0.9×SET_ DPM,   [Equation 3]

In Equation 1 to 3, wherein
PF represents a pressure of the supply line in a front end of the module unit part;
PPI represents a pressure of the permeation line in a front end of the refiner part;
PRI represents a pressure of the passage line in a front end of the refiner part;
SET_DPPR represents an allowable pressure difference value between the passage line and the permeation line;
SET_PM represents an allowable pressure value of the supply line; and
SET_DPM represents an allowable pressure difference value between the supply line and the passage line.

7. The system of claim 6 , wherein, when collected information satisfies one or more of Equations 4 to 6 below, the controller part performs an operation changing system operation conditions:
PRI−PPI< 0  [Equation 4]

PF ≥SET_ PM   [Equation 5]

PF−PRI ≥SET_ DPM,   [Equation 6]

In Equation 4 to 6, wherein
PF represents a pressure of the supply line in a front end of the module unit part;
PPI represents a pressure of the permeation line in a front end of the refiner part;
PRI represents a pressure of the passage line in a front end of the refiner part;
SET_PM represents an allowable pressure value of the supply line; and
SET_DPM represents an allowable pressure difference value between the supply line and the passage line.

8. The system of claim 5 , wherein, when collected information satisfies one or more of Equations 7 and 8 below, the controller part performs an operation generating an alarm indicating that a temperature is abnormal:
TP≥ 0.9×SET_ MFM   [Equation 7]

TR≥ 0.9×SET_ MFM,   [Equation 8]

In Equation 7 to 8, wherein
TP represents a temperature measured in the permeation line;
TR represents a temperature measured in the passage line; and
SET_MFM represents an allowable system temperature.

9. The system of claim 8 , wherein, when collected information satisfies one or more of Equations 9 and 10 below, the controller part performs an operation changing system operation conditions:
TP ≥SET_ MFM   [Equation 9]

TR ≥SET_ MFM,   [Equation 10]

In Equation 9 to 10, wherein
TP represents a temperature measured in the permeation line;
TR represents a temperature measured in the passage line; and
SET_MFM represents an allowable system temperature.

10. A device for evaluating performance of a carbon dioxide (CO 2 ) separation membrane module, the device comprising:
a simulated gas supply line configured to simulate a gas composition of boiler exhaust gas and supply the simulated gas to a module unit part;
the module unit part including a CO 2 separation membrane module and configured to cause the simulated gas to

Assignees

• Korea Electric Power Corp
• Arstroma Co Ltd
• Korea East West Power Co Ltd
• Korea South East Power Co Ltd
• Korea Western Power Co Ltd
• Korea Elastic Power Corp

Inventors

• Lee Jung Bin
• Lee Joong Won
• Kim Kyung Min
• Kim Jun Han
• Eom Yong Seok
• Shin Ky Yeong
• Kim Gwan Shig

Classifications

• B01D65/10 Primary

  Testing of membranes or membrane apparatus; Detecting or repairing leaks · CPC title

• B01D71/024

  Oxides · CPC title

• G01M99/008 Primary

  by doing functionality tests · CPC title

• G01N15/08

  Investigating permeability, pore-volume, or surface area of porous materials · CPC title

• G01M99/00

  Subject matter not provided for in other groups of this subclass · CPC title