Toray: Hydrogen Separation Membrane Module: Achieves a permeation purity of 98%:
-Hydrogen separation membrane separates into H2 molecules and other gas molecules-
January 19
Toray:
Announced that it has developed a hydrogen separation membrane module that selectively permeates hydrogen (H2).
Hydrogen Separation Membrane Module:
If you pass a compressed mixed gas through this module,
The filled hydrogen separation membrane is H2 molecule,
It separates into other gas molecules.
The permeation purity of the separation membrane is 98%, which is the highest level in the world.
Improving the permeation purity of the membrane:
By improving the permeation purity of the membrane,
There is no need for multiple filtrations, which was required in the past,
As a result, CO2 emissions and power consumption can be reduced by 50% or more.
It is expected to be developed for mobility such as fuel cells and removal of impurities such as steam reforming.
Polyamide hydrogen separation membrane:
This hydrogen separation membrane is made of polyamide.
The permeation purity of the membrane was improved by the precision design technology of pores cultivated in the reverse osmosis (RO) membrane.
Features of hydrogen separation membrane:
It can pass “the next smallest H2 molecule after helium (He)”.
Molecules larger than that cannot pass.
It is said that the pores of the size are arranged regularly.
The hole diameter value is not disclosed:
Larger than H2 molecular diameter 0.29 nanometers.
It is smaller than the CO2 molecular diameter of 0.33 nanometers.
A hydrogen-affinity material was incorporated as a membrane material to further enhance selectivity.
Simplification of separation process:
Purity can be increased without filtering more than once.
The separation process can be simplified and the merit of reducing energy consumption is born.
Flow when using the module:
Fill the module with a mixed gas.
The mixed gas first passes through the flow path material on the supply side.
Only H2 molecules move through the membrane to the permeation side channel material.
As a result, it is separated from other gases.
Ingenuity in module design:
The processing amount per module volume was increased.
The area of the membrane has been doubled and the flow resistance of the flow path material has been reduced to one-fifth.
There is also the effect of improving the performance of the membrane itself,
Even if you reduce the number of modules to 1/4
It is said that the same performance will be obtained.
Use of hydrogen separation membrane:
Practical examples include fuel cell vehicles and steam reforming where CO is easily mixed.
“We are aiming for practical use around 2027.”
Nihon Keizai Shimbun
https://www.nikkei.com/article/DGXZQOUC211000R20C22A1000000/
Toray Creates High Polymeric Separation Hydrogen Permeation Membrane Module that More than Halves the Space and Carbon Dioxide Emissions
TORAY Tokyo, Japan,
January 19, 2022
Toray Industries, Inc., announced today that it has developed a polymeric separation membrane module that can selectively and efficiently permeate hydrogen from mixed gases containing that chemical element.
This module more than halves the carbon dioxide emissions of hydrogen purification processes and the number of modules.
Toray will accelerate research and technical development to help create a hydrogen economy.
The company recently used a technology
that it cultivated with reverse osmosis membranes to develop a separation membrane with a highly controlled pore structure by deploying a material with a high hydrogen affinity.
Toray used this membrane
to attain a hydrogen permeation purity of 98%, which is unmatched anywhere.This technology
can boost permeated hydrogen purity with a single separation instead of the several required with regular modules and cuts initial investment expenditure.It also reduces energy consumption and can cut the carbon dioxide emissions of conventional separation membrane modules (Figure 1) by more than 50%.
Latest News | Toray Industries, Inc.
https://www.toray.com/global/news/details/20220121144239.html