The seven stages of chemical engineering technology from concept to industrialization (Issue 8/100) -- Cross-disciplinary technology transfer

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This post was last edited by xiouxingzhe on 2026-6-23 at 15:22. Seven stages of chemical technology from idea to industrialization (Issue 8/100). The fifth source of inspiration: cross-domain technology transfer. Hello, everyone! In the previous issue, we discussed the pain points in the industry and found that great ideas sometimes come from the complaints of frontline operators. Today, we’ll discuss the fifth and final source of inspiration: cross-domain technology transfer. This is also the entry point that I find most interesting. Its core logic can be summed up in one sentence: You don’t need to reinvent problems that others have already solved. I. Beyond chemical engineering, there is a vast repository of technologies. Chemical engineers have one characteristic: we tend to get deeply immersed in our own field. Every day, I deal with reactors, distillation columns, heat exchangers, pumps, and pipes. The terms used are mass and heat transfer, residence time, and reflux ratio. Over time, thinking tends to become habitual—when faced with a problem, the first reaction is to look for answers within the chemical industry. But many of the technologies that can have a significant impact on the chemical industry actually come from outside it. Who was the first to promote microreactor technology? Not a traditional chemical equipment manufacturer, but rather a provider of microfabrication technologies for the semiconductor industry. Micron-scale channels are etched onto silicon wafers; this technology was originally developed for use in chips. Someone applied it to the chemical industry, and thus microchannel reactors were created. Where was membrane separation technology first applied on a large scale? Desalination of seawater. It was only later that it was gradually applied to organic solvent recovery, oil-water separation, and gas separation. Many of the materials, control methods, and analytical instruments used in the chemical industry were not originally developed by the industry itself. We have actually been “transplanting” other people’s technologies, we just don’t realize it sometimes. From my own experience, it makes a big difference whether you take the initiative to do it or not. Passive transplantation means using something only after someone brings it to the door ； Proactive transplantation means going out and searching in other fields. How to get out? I use two methods. First, every year I pay attention to some technical reports and comprehensive updates on technologies that are not closely related to the chemical industry, in order to understand what other industries are doing. There’s no need to delve deep into it, but maintain a state of ‘knowledge’ – knowing that other industries use this technology or adopt that approach. There’s no need to be an expert in multiple fields; it’s sufficient to know that “such a thing exists”. Second, when thinking about problems in one’s own industry, ask oneself one more question: “Is there anything similar in other fields?” ”This question doesn’t require you to have knowledge across different fields; it’s simply a matter of thinking habits. With this habit, things that come to hand casually often end up being linked to some problem that has been lingering in one’s mind for a long time. II. Functional retrieval: Translating chemical engineering problems into general problems. There is an obstacle to cross-domain technology transfer: language barriers. The chemical industry has its own jargon. When you say “scaling in the distillation column reboiler,” people in other industries have no idea what you’re talking about. But if you remove the \"chemical industry facade\" from this issue and return to its most fundamental functional description, other industries may have already developed mature solutions. I mentioned this method once in Issue 6 when discussing associations in literature reading; it’s called “functional retrieval”. Let’s discuss it in detail today. It has three steps. Step 1: Abstract the chemical engineering problem into functional requirements. This is the most crucial and difficult step. You need to strip away the jargon from the chemical industry and reduce the problem to its most fundamental functional description. For example, your question is “Reboilers in distillation towers tend to scale up easily, resulting in a rapid decline in heat transfer efficiency.” Do not search directly for “scaling of distillation column reboilers”; instead, start with an abstraction: “How can solid deposits on the heat transfer surfaces be reduced during the heat transfer process?” ”This description contains no mention of “distillation” or “reboiler”; only functional requirements are listed. This problem has occurred in the food industry when sterilizing milk, and it also arises in the water treatment industry during evaporation and concentration. Another example is, “Uneven stirring in the reactor leads to excessively high local concentrations” – which can be abstracted as “how to achieve efficient and uniform mixing in a confined space”. This issue is addressed in different ways by the coating industry in color mixing, and by the cosmetics industry when producing emulsions. Step 2: Select appropriate cross-domain search terms. With the function description in hand, the next step is to identify the corresponding cross-domain keywords. Taking “reducing the accumulation of solid deposits on heat transfer surfaces” as an example, terms such as scale prevention, self-cleaning surfaces, in-situ cleaning (CIP), and fluidized bed heat exchange can be derived from it. These terms come from different industries – the membrane separation industry uses the term “anti-fouling,” the coating industry uses “self-cleaning,” the food and pharmaceutical industries use “in-situ cleaning,” and the oil industry uses “fluidized bed heat exchange.” By combining them for a search, you can find solutions to similar problems in various industries. Step 3: Look at patents, not just papers. Why is it recommended to look at patents? This is because journal articles usually only report successful results, whereas patents describe various possible implementation methods in detail, and sometimes also mention in what situations certain approaches do not work well—this information is useful for assessing the feasibility of technology transfer. When conducting a search, you can start by looking at the “Background Technology” section of the patent; this section usually explains in detail the limitations of existing technological approaches, helping you quickly understand what others have tried in this field and what hasn’t worked. This feature’s search method may not always yield an immediate answer, but it helps broaden your perspective from \"solutions known in this industry\" to \"solutions available in various industries.\" Sometimes, a problem that you have been struggling with for a long time may have already been solved in another industry; you just don’t know about it. III. Transplanting does not mean copying; it involves recreating the principles. When encountering a technology from another industry, one should not focus only on its \"form\", but rather on its \"principles\". What is the principle behind microfabrication in the semiconductor industry? It involves the precise creation of micron-scale channels on silicon wafers. Can this principle be applied in the chemical industry? Yes – the chemical industry requires precise control over the mixing time of reactants, and microchannels are an excellent solution for this. The key term here is functional analogy, not morphological analogy. You don’t need to put the silicon wafers in a chemical plant. What you need to do is extract the principle of \"precisely manufacturing microchannels\" and reproduce it using chemical materials—metals, ceramics, polymers. This is the core of technology transfer: extracting the principles and recreating them using tools from the relevant field. After completing the functional analogy, three more things need to be done. First, determine whether there are any differences in the applicable conditions. Temperature, pressure, and corrosion – these three factors are most likely to cause problems. The microchannels in the semiconductor industry are etched into silicon wafers, while the media used in chemical plants can be strong acids and bases, to which silicon wafers cannot withstand. It needs to be replaced with Hastelloy or silicon carbide. Second, assess what adaptive modifications are needed after transplantation and whether the cost of these modifications is acceptable. It’s not necessary to transplant something just because it’s technically possible to do so. If the cost of modification is too high, exceeding the benefits it brings, then such transplantation is not worthwhile. Third, consider whether transplanting it will have a cascading effect on the original process flow. You have added a new device – do the material balance, heat balance, and control strategies upstream and downstream need to be adjusted? Some transplantation approaches may seem excellent on their own, but they fail when applied in the full process. IV. A case study: Cross-sector application of microreactors. The core technology of microreactors – the processing of micrometer-scale channels – was originally developed for the semiconductor industry, with the aim of etching circuits onto silicon wafers. When the chemical engineer saw this technology, he asked a question: “Can these microchannels be used for chemical reactions?” ” Scale reduction leads to a significant improvement in mass and heat transfer performance. It turns out that reactions which take minutes or even dozens of minutes to complete in batch reactors may only require a few seconds to dozens of seconds in microchannels. A highly exothermic reaction for which jacket cooling in a kettle was deemed insufficient due to slow heat transfer can achieve unprecedented precision in temperature control in microchannels, as the ratio of heat exchange area to volume there is extremely high. When microreactor technology was applied to the development of continuous-flow processes for para-phenylenediamine, the diazotization reaction gained precision control never seen before—this is an example of cross-domain application. Of course, microreactors also have their limitations. It is sensitive to clogging, not very favorable for reactions involving solids, and has limited production capacity per channel. However, these limitations do not negate its value in appropriate application scenarios. Cross-domain technology transplantation is like that – it’s not a tool that can be used right away, but rather a process that requires judgment, adaptation, and verification. But it at least gives you a new possibility: for problems that have no solution in your own field, there might already be an answer somewhere else. Preview for the next issue: Issue 9 – The Creative Pool: A place to store inspiration. All five sources of inspiration have been covered. Inspiration came, and you ran away without catching it. Next time, we’ll discuss how to build and manage a creative pool – how to turn those scattered ideas, from vague notions, into materials that can be traced, connected, and further developed. Table of Contents link: Seven-Stage Model of Chemical Technology from Idea to Industrialization (Issue 100) – Table of Contents (updated in real time)