Achieving green energy conversion between "breathing" waste gas purification stems from technological breakthroughs

Objectively speaking, today’s environmental conditions are not ideal. While the greenhouse effect is plaguing the development of human civilization, various types of pollution also threaten the living space of humans and animals. In order to address these issues, various countries have proposed relevant measures and governance goals. Carbon peaking and carbon neutrality are representative points.

Judging from the current results, my country is in a positive but not overly optimistic situation in terms of progress related to carbon peaking and carbon neutrality. On the one hand, our country has been continuously advancing energy conservation and low-carbon related work and has achieved certain results. On the other hand, a large number of new technologies and new achievements have also made certain progress in "carbon capture work." But at the same time, my country's carbon emission data is still gradually growing, and there are still certain challenges in achieving carbon peak within the planned time and then gradually achieving carbon neutrality. To put it simply, "double carbon" has not been realized yet, and the whole people still need to work hard.

In the "territory" of the "double carbon" plan, one piece of content is considered to be an important breakthrough - "energy". From the "steam age" to the "electric age", the development of energy has stimulated the development of people's basic necessities of life. But whether it is "steam" or "electricity", coal resources always occupy a very important position. It can be said that coal resources are one of the main components of current energy. It is not only an energy storage carrier, but also the key to production capacity. But these important resources are closely linked to carbon emissions.

Coal mines will produce a large amount of waste gas after burning. The main component of this waste gas is carbon dioxide. In addition, it also includes sulfur dioxide, carbon monoxide, nitrogen oxides, etc. Even though, with the development of technology, deleaching and desulfurization have been basically achieved in everything from automobile gasoline to industrial coal, the carbon emissions caused by its combustion will still cause harm to the environment.Huge pressure.

At the same time, since electricity consumption in most areas of our country still relies on coal power plants, the carbon emissions caused by coal burning are also difficult to solve. To change, in addition to finding new power generation models and accelerating the deployment of green power generation industries, such as hydropower, solar energy, wind energy, etc., the key is to explore new energy storage fuels.

So what should the ideal energy storage fuel do? First of all, the efficiency of energy release during combustion must be ensured, and secondly, the products after combustion must be clean enough. So is there such a carrier? The answer is yes, this fuel is hydrogen energy. Hydrogen only produces water when burned in oxygen, so it is clean enough. But at this stage, one problem with hydrogen fuel is the collection itself. On the one hand, the traditional hydrogen preparation method comes from electrolysis, and the current production of electric energy cannot completely get rid of coal burning. Therefore, the use of hydrogen actually still involves indirect emissions of waste gas; on the other hand, simply promoting hydrogen is beneficial to existing waste gas treatment. In fact, the impact is not big. So is there any way to solve these problems?

Pressure swing adsorption gas separation technology seems to provide a solution. Although it is still difficult to achieve green hydrogen or a pure green energy model, we can do the next best thing and start by solving existing carbon emissions. The recent emergence of pressure swing adsorption gas separation technology has made it possible to reuse industrial waste gas from petrochemical companies. It is understood that this technology can separate different gases in the exhaust gas, purify the hydrogen, and also facilitate the centralized treatment of harmful gases. It can also play a role in solving problems such as waste of industrial by-product gas resources, environmental pollution, and carbon emission reduction. Very good improvement effect. It is worth mentioning that the high-purity hydrogen used in the 2,000 hydrogen fuel cell vehicles used for the 2022 Beijing Winter Olympics in the future will also be produced using this technology.

　(Original title: Green energy conversion between "breathing" exhaust gas purification stems from technological breakthrough)