【Major Equipment in the Chemical Equipment Industry】042 – The first DN4000, H≈16830 STHE series propane dehydrogenation reactor inlet/outlet heat exchangers
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The past decade has been a period of rapid development for China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical processing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and localization of such equipment. We invite everyone to share their insights and discuss these topics together, to cheer for Made in China and to support the development of chemical processing equipment! *********************************** In the list of Zhejiang Province’s first-of-a-kind products for 2021, published jointly by the Zhejiang Provincial Department of Economy and Information Technology and the Zhejiang Provincial Department of Finance, the \"DN4000 H≈16830 STHE series propane dehydrogenation reactor inlet/outlet heat exchangers\" developed independently by Zhenhai Petrochemical Construction Engineering Co., Ltd., was recognized as China’s first-of-a-kind product, with its comprehensive technical performance reaching international advanced levels.
With the continuous commissioning of large-scale propane dehydrogenation plants worldwide, the tubular heat exchangers used in the original PDH process packages have faced various limitations such as flow dead zones, internal leakage of the fluid, high pressure drops, and low heat exchange efficiency. As a result, these plants have struggled for years with technical problems including low propylene yield, high energy consumption, and substantial carbon emissions. Building on years of research and development in the field of coiled-tube heat exchangers, the petrochemical engineering team has, by taking advantage of the technical strengths of such exchangers, creatively proposed a solution for using them in PDH process units. As a result, the STHE series of heat exchangers for propane dehydrogenation reactors was developed. Compared with traditional shell-and-tube heat exchangers, these new exchangers enable an increase in the heat exchange efficiency of the equipment by 30% and an improvement in the propylene yield of the plant by 3.5%. Additionally, by reducing energy consumption, they help to lower carbon emissions, thereby contributing to the petrochemical industry’s goals of achieving carbon neutrality and carbon peak targets. Taking a 600,000 tons per year propane dehydrogenation plant as an example, once operational, it can reduce energy consumption by about 260 tons of standard oil per year, cut carbon dioxide emissions by around 10,000 tons per year, increase propylene production by 20,000 tons per year on average, and generate direct economic benefits of 88 million yuan per year. The successful development of the inlet/outlet heat exchangers for STHE series of propane dehydrogenation reactors has achieved a historic breakthrough in terms of the efficiency and technological advancement of these units. It was the first in the industry to see the use of coiled tube heat exchangers in global PDH process packages, thereby establishing its position as a leader in this field. This device has been successfully applied in projects such as Ningbo Jinfafa, Dongguan Juzhengyuan, and Qingdao Jinneng, earning unanimous praise from users and leading to its widespread adoption. It is foreseeable that as the application of this equipment in the global propane dehydrogenation market continues to expand, it will enable us to maintain our technological leadership while creating greater value for our customers.
The 【Haichuan Equipment Guessing】 series is being updated continuously in 2022; all Haiyu friends are welcome to participate actively! https://bbs.hcbbs.com/thread-2079686-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post on the series 【Major Equipment in the Chemical Equipment Industry】 https://bbs.hcbbs.com/thread-3312079-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post discussing the components of cracking furnace equipment for 【Ethylene Cracking】 https://bbs.hcbbs.com/thread-3308724-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum)