China exports PSA hydrogen? 

A question that sounds simpler than it actually is. Many people immediately think about ready-made installations, containers on ships, but reality often comes down to “hardware”, paper and local ideas about what “Chinese quality” is. I have heard more than once from colleagues at exhibitions in Yekaterinburg or by correspondence: ?PSA? Ah, China. Is this about prices? And this is the first thing we have to work with - the conversation begins not with technology, but with prejudice.

What is really hidden behind ?export?

When they say ?, they usually mean three things: ready-made hydrogen generation stations, technologyP.S.A.(pressure swing adsorption) as part of larger chemical complexes, and, increasingly, engineering services and design. The latter is the key point. Previously, equipment was transported in boxes, but now, more and more often, it is a package of solutions where the equipment can be prefabricated: compressors from one supplier, adsorbers from another, a control system from a third. The Chinese company acts as an integrator.

For example, if we takeChengdu Yizhi Technology Co.(their website isyzkjhx.ru). This is not just a manufacturing plant. They are positioned as a design institute established by Huaxi Technology. In their case, export is often a “turnkey” project: from calculation of the technological scheme and selection of sorbents to supervision of installation and personnel training. The registered capital of 120 million yuan is a signal to the market of serious intentions in the field of a full cycle, and not just assembly.

But here lies the difficulty. The Russian customer, especially the industrial one, is accustomed to a clear division: here is the licensor of the technology (often European), here is the general contractor. The Chinese model, where the designer is deeply involved in the equipment supply chain, raises questions. ?Where are the guarantees that your scheme is not optimized only for your own subsuppliers?? - a typical complaint. We have to prove it with numbers, with reference objects.

Technological basis: not just copies

A common misconception is that all ChinesePSA hydrogenthis is an adaptation of the old UOP or Linde circuits. Yes, it started with this, about 15-20 years ago. But now the picture is different. Let's take the same area of ​​sorbents. Chinese manufacturers (for example, Sinopec, Peking University Founder Group) are actively developing their own lines of zeolites and activated carbons, adapted for specific raw materials - not always perfectly purified steam reformed gas, but, say, coke oven gas or methanol plant gas, which are common in Asia.

In practice, this results in the fact that the proposed technological scheme may not have 5-6 adsorbers, like the classic, but a different configuration, designed for a higher CO or CO2 content at the inlet. For a Russian customer who works on the same steam reforming plant, this may not be critical. But if we are talking about modernizing an old coke production plant somewhere in Kuzbass, then such experience turns out to be invaluable. The problem is to convince technologists on the customer’s side to delve into these nuances, and not just compare the numbers of “hydrogen per ton of adsorbent?” from catalogues.

Barriers on the way: not only customs

The most obvious barrier is certification. European CE, Russian TR CU/EAEU for pressure equipment. Chinese major players have traveled this path a long time ago and have all the necessary certificates for the main devices. But all the piping, pipe fittings, sensors - there could be a “hodgepodge” here. And if the fittings are Chinese, but from an unknown plant, the Rostekhnadzor inspector immediately has questions. You have to either include European fittings in the contract in advance (which comes at a cost), or carry out additional tests and examinations, which delays the deadlines.

Another, less obvious barrier is operational expectations. Chinese engineers often design for very tight maintenance schedules, relying on the constant presence of trained personnel. In the Russian reality, at remote sites, there may not be enough personnel, and the maintenance schedule tends to “as long as?”. A practical story: at one of the installations in Siberia, control valves quickly failed - not because they were bad, but because local mechanics turned off the air drying system for pneumatic drives in the winter, considering it unnecessary. The draft did not highlight this point as critical to maintaining the guarantee.

Case: when? turnkey? turns into a headache

I’ll tell you about one project without naming names. The customer wanted installationHydrogen PSAfor purification of the gas mixture from the reforming unit. We chose a Chinese contractor with a good portfolio. The price was 25% lower than European analogues. Everything was going well until the commissioning phase began.

It turned out that the design hydrogen productivity is achieved only with ideally stable input gas parameters - pressure and temperature. And there were inevitable fluctuations in the customer’s existing production. The Chinese side said: “Your raw materials do not meet the terms of the contract?” The customer retorted: “You should have taken into account technological variation, is this a basic requirement?” Conflict.

As a result, it was necessary to modify the scheme on site, using local engineers and an invited Russian technologist - to stabilize the flow, add a buffer capacity. Chinese specialists agreed to help, but for an additional fee. The project eventually started working, but the deadlines shifted by six months, and the savings from the low price were partially “eaten up”. Moral: the contract should spell out in extreme detail what is included in the “entry conditions”, and who is responsible for adapting to real, not ideal conditions of the workshop.

The future: hydrogen wave and new opportunities

Now the whole world is talking about green hydrogen. And here Chinese companies have a new argument. They are actively building electrolysis projects combined with renewable energy sources. Their export potential is shifting: it is no longer onlyP.S.A.for clearing ?gray? hydrogen from fossil raw materials, but also technologies for working with hydrogen from electrolysers, where purification requirements may be different.

Companies likeChengdu Yizhi TechnologyThis market is now being actively studied. Their website shows that they are expanding their line of solutions. Their advantage is flexibility and speed in developing projects for non-standard tasks. If Europe offers expensive but standardized ?cataloged? solutions, Chinese engineering firms can more quickly offer an option for a specific combination of energy sources and consumers.

But for Russia this trend is still secondary. Our market in the coming years will be focused on “blue” and ?gray? hydrogen from natural gas. And here the demand for Chinese suppliers will be tougher: not just cheaper, but more reliable and with a full understanding of our regulations, climate and human resources. Those who can offer not just equipment, but an “adapted technological package?” with deep localization of the service, they will win. The rest will remain in the niche of “budget supplies”, where each contract is a lottery with risks similar to those described above.

The result? China doesn't just export PSA hydrogen. It exports a complex package of engineering services, technologies and equipment, wrapped at a very competitive price. But this price almost always includes the hidden cost of adaptation—technical, cultural, regulatory. The success of the project depends on the extent to which both parties - both the supplier and the customer - are ready to see, acknowledge and bear this cost together, and not pretend that they are just buying a “box of devices”.