【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2014 to 2023, China achieved long-distance dense-phase pipeline transportation of liquid carbon dioxide for the first time
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Ten years of rapid development in chemical technology – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. HaiChuan becomes even better with your involvement; we welcome everyone to join in the forum discussions. Be careful with fire risks as the heat increases in July. ---------------------------------------------- On July 11, 2023, China’s first high-pressure, normal-temperature, dense-phase carbon dioxide transport pipeline with a capacity of one million tons, a transmission distance of 100 kilometers, and a pressure rating of 100 kilograms per square meter was put into operation. This 109-kilometer-long pipeline, part of the “Qilu Petrochemicals–Shengli Oilfield One-Million-Ton CCUS Project,” marks a milestone in the advancement of the entire CCUS industry in China. Our country has achieved long-distance dense-phase pipeline transportation of liquid carbon dioxide for the first time. The dense phase refers to a state of carbon dioxide that exists at pressures higher than the critical pressure and temperatures lower than the critical temperature, that is, at operating pressures above 7.38 MPa and operating temperatures below 31.1 degrees Celsius. This pipeline is capable of transporting 1.7 million tons of carbon dioxide captured from **** production each year to the underground oil reservoirs in the Shengli Oil Field for use in oil displacement and sequestration; it constitutes an important part of the \"Qilu Petrochemicals-Shengli Oil Field Million-Ton CCUS Project\".
【Ten Years of Great Progress in Chemical Engineering Technology】The Puguang Gas Field adopted robot-assisted agent removal for the first time from 2013 to 2023 https://bbs.hcbbs.com/thread-4304856-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Pipeline transportation of carbon dioxide offers clear advantages in terms of transportation scale, cost, and social benefits, making it the preferred method for large-scale, long-distance, low-cost transportation over land. However, carbon dioxide pipeline transportation in our country is still in its infancy at present; there are only a few short-distance, small-scale, low-pressure carbon dioxide pipelines, and road transport using cryogenic storage tanks remains the primary method of transportation. According to the report \"Planning and Prospects for the CCUS Transportation Pipeline Network in China\" released by Beijing Institute of Technology, to achieve the goal of carbon neutrality, the country needs to build carbon dioxide transportation pipelines with a total length of over 17,000 kilometers. The operation of this pipeline will serve as a model for large-scale carbon dioxide pipeline transportation in our country.
This pipeline project successfully overcame 3 core technologies and developed 2 key pieces of equipment: a centrifugal booster pump for the transport of liquid carbon dioxide at low temperatures, and a high-efficiency reciprocating injection pump for carbon dioxide under normal temperature and high pressure in a dense phase. Compared to oil pipelines, the safe transportation, design, and construction of carbon dioxide pipelines, as well as the implementation of special measures, present greater challenges. There are no precedents in China for the high-pressure, normal-temperature, dense-phase transport of carbon dioxide; to prevent damage caused by low temperatures in the event of a leak, the pipelines need to be buried about 2 meters underground. To prevent soil frost heave and environmental damage caused by low temperatures, a liquid transport process at normal temperature is chosen, requiring sufficient pressure to be maintained. Therefore, for the first time, this pipeline utilized China’s first set of high-displacement booster pumps with independent intellectual property rights; the design pressure of these pumps is as high as 12 megapascals, whereas similar gas pipelines only require 0.7 megapascals. This means that an area the size of a fingernail has to bear a weight of 120 kilograms. Since its announcement of commissioning in August 2022, the \"Qilu Petrochemicals-Shengli Oilfield Million-Ton CCUS Project\" has primarily used road transport via tank trucks to carry carbon dioxide from the Qilu Petrochemicals facility to various oil extraction areas in the Shengli Oilfield. Once put into operation, this pipeline will enable the reduction of 40,000 vehicle trips per year, cut back on natural gas (a fuel for vehicles) by around 2 million cubic meters, significantly lower the safety risks associated with road transport as well as transportation costs and the strain on road infrastructure along the routes, and reduce carbon dioxide emissions from transportation by 4,000 tons. “The \"Qilu Petrochemical-Shengli Oilfield Million-Ton CCUS Project\" is China’s largest demonstration base for the entire carbon capture, utilization, and storage industry chain, as well as the country’s first million-ton-scale CCUS project. The project covers oil geological reserves of over 25 million tons, with more than 70 injection wells deployed. It is expected that by year 15, a total of over 10 million tons will be injected, resulting in an increase of nearly 3 million tons in oil production and a boost in recovery rate of over 12%. The project’s annual sequestration capacity reaches the million-ton level, which is equivalent to planting nearly 9 million trees or preventing almost 600,000 economy cars from being used for a year.
【Ten Years of Great Progress in Chemical Technology】China’s first 10,000-ton capacity high-purity phase-change wax production facility came online between 2013 and 2023 https://bbs.hcbbs.com/thread-4304887-1-1.html (Source: Haichuan Chemical Industry Forum Website)