Would you be willing to use the waste hydrogen from chlor-alkali plants to generate electricity in fuel cells?
Thread Content
Hello, experts. I am a researcher from the University of Macau. We are interested in studying the use of waste hydrogen generated by chlor-alkali plants for hydrogen storage, and then combining this with SOFC technology to generate electricity that can be sold back to the chlor-alkali plants. Are you interested in such a technology? How much are people willing to sell their waste hydrogen (99%) from chlor-alkali plants for?
What is the maximum power of current power generation units using SOFC technology? Most of the hydrogen recovered by chlor-alkali plants is utilized; what benefits can power generation bring?
University research focuses on technologies that will be relevant in the next 10–30 years. SOFC is developing rapidly, and there is a concept of energy storage involved; technologies that are not yet widely adopted make it difficult to conduct cost calculations. The price of fuel cells has dropped by 95% this year, meaning it’s now only a fraction of what it used to be.
The hydrogen from the chlor-alkali plant is recovered using a pressure swing adsorption-based hydrogen extraction unit; some of it, which does not meet the required purity standards, is released into the atmosphere. Can you use hydrogen with low purity? When the purity is high, the chlor-alkali plant recovers it itself, as there is an excess of chlorine while hydrogen is already in short supply.
How low does low purity refer to? Generally, the hydrogen gas discharged directly from chlor-alkali plants also constitutes about 99%, with the rest being water, oxygen, and nitrogen. Purification comes at a cost; even for industrial hydrogen with a purity of 99.9%, the cost is 1.0–1.5 yuan per cubic meter.
:) Please offer more suggestions and engage in discussions
The normal purity of hydrogen is over 99%. Companies that use the calcium carbide method for PVC production burn hydrogen to generate hydrogen chloride gas, so there is no excess hydrogen available there. However, other manufacturers do have excess hydrogen, but it isn’t produced on a commercial scale.
Has SOCF technology passed the evaluation yet? It’s good news if resources can be allocated to product operations.
We discharge gas with a purity of around 60%; we haven’t tested what the actual purity is. This is the purity after hydrogen extraction – how could gas with 99% purity be discharged?
All the information I found states that the hydrogen in the exhaust gases emitted by chlor-alkali plants has a purity of 99%. If there are no downstream industries or uses for burning it, what else can be done with it if it isn’t released?