China: leaders in steam hydrogen production? 

When they talk about the hydrogen revolution, everyone immediately remembers electrolysis and “green?” hydrogen. And about steam reforming of methane (SMR) - as if it were yesterday, dirty and uninteresting. But in fact, if you look at the real volumes and costs, it issteam hydrogen productionremains the backbone of the entire industry. And here China is not just a player, but a platform where technologies are developed that then surprise the world. There is a lot of noise about new projects, but few people dig deeper: how does it actually work, where are the pitfalls and why are some “breakthrough”? Are the installations quietly collecting dust in warehouses?

Not “if”, but “how”: why PCM is still the basis

In theory, everything is simple: you take methane and steam, heat it, and get hydrogen and CO2. In practice, there are dozens of nuances that determine whether a plant will be profitable or ruinous. The key point is the source of methane. China has historically relied on coal gas, hence the specificity. Experience has shown that adjusting the catalyst and modes to the unstable composition of coal mine methane is an entire art. Many Western technologies came here and literally “choked.” We had to adapt, often through trial and error.

Here, for example, is the story of one project in Shanxi. We purchased an expensive European reforming unit. And after six months - simple. The catalyst quickly deactivated due to impurities in the gas that were not included in the specifications. Local engineers then spent six months working on the pre-treatment system, combining adsorbents. It worked, but the deadlines and budget were missed. There are dozens of such cases. This is the very “practice” that is not in the analysts’ reports.

The current trend is the integration of PCM with carbon capture systems (CCS). It's not just production anymoregray hydrogen, but a step towards low carbon. There are several such pilots in China, for example, at the petrochemical complex in Ningxia. It is technologically difficult and expensive, but the process is underway. And again, without extensive experience in basic PCM, such hybrid systems cannot be built.

Equipment and hardware: where the real leadership lies

Leadership is determined not only by tonnage. It is in the ability to create and scale key equipment. Reactors, conversion furnaces, heat exchangers are the units where the main processes take place. Chinese manufacturers about ten years ago reached a good level in the manufacture of large-scale reforming units. Price, of course, was the main trump card. But now, looking at the projects, it is clear that it is no longer just a matter of price.

Take, for example, radiant furnaces for steam reforming. Previously, the top 3 global companies had the key patents and best solutions. Now Chinese engineering firms are offering their designs with efficiency levels that are not inferior. Secret? Extensive experience in harsh environments and rapid iteration. We found a problem with uneven heating of the tubes - a year later we introduced a new burner configuration and control system. This is the speed of feedback, which in the ?fed? markets are difficult to imagine.

It is worth mentioning here the design institutes that have become the drivers of this localization. One of the striking examples isChengdu Yizhi Technology Co. (https://www.yzkjhx.ru). This is not just an office with draftsmen. The institute, based on the technology company Huaxi, with a registered capital of 120 million yuan, operates as an integrator. They take basic chemical technology and “fine-tune” it. it to a specific “hardware” and automated process control systems for a specific plant. Their role often remains behind the scenes, but without such links there would be neither rapid implementation nor adaptation.

Raw materials puzzle: from coal to APG and back

The leadership debate comes down to raw materials. Classic - coal. But its future is in doubt due to environmental issues. So far, many new projects in Xinjiang or Inner Mongolia are still based on coal gas. However, it is more interesting to observe another trend - the use of associated petroleum gas (APG).

At fields in Shaanxi or on the shelf, there was often a choice: flare APG or find a use for it. It is logical to build a chemical complex with a PCM installation nearby. But the composition of APG is unstable, plus there are transport issues. I saw one project where they wanted to install a mobile steam reforming module directly at the field. The idea is brilliant: minimize losses. But in reality there was a problem with cleaning the raw materials - the module became clogged, stoppages were frequent. The project was frozen. Such failures are also part of the journey.

Experiments are currently underway with mixing flows: APG + liquefied natural gas + gas from coal seams. This makes it possible to stabilize the composition at the entrance to the installation. Technologically difficult, but if successful, it will provide enormous flexibility and allow the use of previously useless or burnt resources. Here's where the next generation of Chinese technology could be bornhydrogen production.

Catalysts: own kitchen

The heart of the process is the catalyst. For a long time, the market was divided by several international giants. Their products are reliable, but expensive and not always optimal for Chinese raw materials. About 5-7 years ago, a boom in local development began. Not all of them were successful. I remember one provincial academy of sciences praised its catalyst based on cheap media. Excellent results in the laboratory. On a pilot plant - loss of activity after 1000 hours. The reason is microscopic amounts of sulfur in the steam, which were not modeled in the laboratory.

But now the situation is changing. Large players, such as Sinopec or CNPC, have their own research centers that conduct development “for themselves”. They do not seek to sell catalysts externally, but create very competitive products for internal needs. Their main trump card is data. They have information from dozens of operating installations over many years. They know how the catalyst will behave during pressure fluctuations and during maintenance stops. This is knowledge that cannot be bought.

An interesting point is nickel catalysts. Standard for PCM. Chinese manufacturers have learned to make them not just cheap, but with specified properties: increased resistance to caking or certain poisons. This is no longer copying, but customization to suit the needs of national industry. And this is a serious argument in the conversation about technological sovereignty in the hydrogen topic.

Integration into the energy system: hydrogen as a stabilizer

The most recent and unobvious thought. Hydrogen from PCM is not only a feedstock for ammonia or refineries. It is beginning to be considered as an element of a large energy system. In China, there is a problem with uneven generation from renewable energy sources in the west of the country. Excess wind energy could theoretically be used for electrolysis, but this is currently expensive.

The alternative is to use these surpluses indirectly rather than directly. For example, for the operation of compressors, lighting and control systems at the same steam reforming plants. Or to produce the very steam that is needed for the reaction. This reduces the carbon footprint of the final product. Have you seen the concept of a “hybrid”? plant in Gansu: part of the steam is from electric steam generators powered by wind energy, part is from traditional boilers. Load balancing is a hell of a task for technologists, but they're messing around with it.

This trend is still in its infancy, but it shows a paradigm shift.Steam hydrogen productionceases to be an isolated process “in a pipe?” and becomes part of a more complex energy-chemical cluster. And in this ability to integrate and build complex symbioses, China may have no equal simply due to the scale and number of facilities under construction. Here you learn quickly, because there is nowhere to go - you need to solve real problems here and now, and not in the beautiful “green” world. future.