[Ten years of great development in chemical equipment] From 917 to 2023, the country’s first double carbon dioxide transportation pipeline will be fully connected
Thread Content
Chemical equipment has developed greatly in the past ten years. Praise for China's prosperity and strength in the prosperous age. It will be more lively and exciting with everyone's participation. Everyone is welcome to participate in more forum exchanges and discussions. Happy May Day! Safe and safe in May * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * On April 30, with the completion of the last breakpoint welding, my country's first large-scale carbon dioxide transportation pipeline, the Qilu Petrochemical-Shengli Oilfield million-ton CCUS demonstration project carbon dioxide transportation pipeline, was fully connected as scheduled. The total length of the pipeline is 109 kilometers. After it is put into operation, more than 1 million tons of carbon dioxide captured by Qilu Petrochemical's Second Fertilizer Plant will be transported to the underground reservoir of Shengli Oilfield for oil flooding and storage every year. According to the relevant person in charge, my country’s carbon dioxide transportation pipelines were previously mainly small-scale and gas-phase transportation. With a transportation scale of one million tons, a transportation distance of 100 kilometers, and a supercritical transmission phase, this pipeline has established its status as the first in the country. It has become a demonstration project of a million-ton, 100-kilometer supercritical carbon dioxide transportation pipeline, completing the * * The technical shortcomings of the large-scale development of the entire CCUS chain are of great significance to the realization of the "double carbon" goal. It is reported that the Qilu Petrochemical-Shengli Oilfield carbon dioxide transmission pipeline starts from the newly built first station of Qilu Petrochemical in the Qilu Second Fertilizer Plant in Linzi District, Zibo City, ends at the Gaoqing terminal station, and then is transported to various injection stations via branch lines. The pipeline adopts high pressure and normal temperature dense phase transportation, with a design pressure of 12MPa. There are 11 large, medium and small river crossings along the line, 12 special section crossings, 4 highway crossings, 34 graded highway crossings and 5 railway crossings. The pipeline runs in a north-south direction as a whole, specifically in a southeast-northwest direction. There are three big turning points from the first station of Qilu Petrochemical Station to the last station of Gaoqing Station, making the entire line present three steps. “Climbing up the stairs, it seems as if you have overcome a difficulty every time you climb a step. ”Qi Lidian, deputy manager of the Engineering Construction Management Department of Shengli Oilfield and executive manager of the pipeline construction project department, said that the full completion of the pipeline has overcome the three core technologies of carbon dioxide pipeline transportation flow guarantee, safety control and phase control-based production and operation and maintenance technology, as well as two key equipments of liquid carbon dioxide pipeline transportation booster pump and high-efficiency carbon dioxide dense phase injection pump.
The carbon dioxide oil displacement and storage demonstration project in the Gao 89-Fan 142 area is located in Gaoqing County, Zibo. It purifies and liquefies the carbon dioxide in the tail gas of Qilu Petrochemical Industry and transports it to the Gao 89-Fan 142 area for oil displacement and storage. The project area covers an oil-bearing area of 48 square kilometers, with geological reserves of 25.62 million tons. It has 73 designed gas injection wells and 166 oil wells. The gas and oil exchange rate per ton is 0.28 tons, and the oil recovery rate is 16.9%. On the ground, 15 unattended gas and water injection stations, 2 oil and gas processing stations, and 1 associated gas recovery station have been constructed. The carbon dioxide-containing associated gas produced along with the oil well exploitation is transported to adjacent blocks for reinjection to realize cyclic oil flooding, achieving an annual injection capacity of one million tons, which is equivalent to planting nearly 9 million trees and shutting down nearly 600,000 economic cars for one year. It is understood that the project started construction in October 2021. As of now, all 73 gas injection wells have been completed; 15 injection stations have been built. The supporting transportation pipeline project, namely the Qilu Petrochemical-Shengli Oilfield carbon dioxide transportation pipeline project, is the first long-distance hazardous chemicals transportation pipeline in China using carbon dioxide as the medium. The whole line of the project is located in Zibo and Dongying, starting from the first station of Qilu Petrochemical and ending at the Zhenglizhuang Oilfield production area of Shengli Oilfield. The total length of the line is 114.5 kilometers, with a main line of 80 kilometers and a branch line of 34.5 kilometers. The main pipe diameter is DN300, the design pressure is 12 MPa, and the transportation capacity is 1.7 million tons/year. The project has completed procedures such as feasibility study approval, safety pre-assessment, overburden mineral assessment and flood control assessment, as well as preliminary design approval in April 2022, and simultaneously promoted the procurement of long-term equipment such as carbon dioxide booster pumps and construction preparations. At present, the supporting transmission pipeline project has started construction and is expected to be completed and put into operation by the end of this year. It will be the first time in the world to realize long-distance dense phase normal temperature pipeline transportation of carbon dioxide. It will play an important supporting role in ensuring the construction of CCUS full industry chain demonstration base and promoting the green and low-carbon development of oil and gas resources.
According to reports, the pipeline project was initiated in April 2022. After the project was approved, construction started on August 25 of the same year, when the Qilu Petrochemical-Shengli Oilfield million-ton CCUS demonstration project was put into operation. It is expected to be put into operation in May this year. The overall safety and control of pipeline transportation is low, which helps to amortize the high capture costs and reduce the average project cost. After the project is put into operation, it can reduce vehicle transportation by 40,000 vehicles per year and reduce vehicle fuel consumption by approximately 2 million cubic meters. It can effectively reduce the occupation of traffic resources along the highway and significantly reduce carbon dioxide emissions by 4,000 tons. “The safe transportation, design and construction, and special measures of pipelines are much more difficult than those of oil pipelines. ”Qi Lidian said that there is no domestic precedent for carbon dioxide high-pressure and normal-temperature dense-phase transportation. In order to prevent low-temperature damage caused by carbon dioxide leakage, the pipeline needs to be buried 2 meters underground. In order to prevent soil frost heaving and environmental damage caused by low temperature, the normal temperature liquid transportation process needs to be maintained with sufficient pressure. Therefore, this pipeline uses a jointly developed large-displacement booster pump for the first time, with a pressure as high as 12 MPa, while the same type of gas pipeline only requires 0.7 MPa.
[Ten years of major development in chemical technology] 037-2020 The first domestic thermal power plant flue gas carbon dioxide capture and purification device was successfully put into operation https://bbs.hcbbs.com/thread-3604641-1-1.html (Source: Huahaichuanliu-Haichuan.com)
[Ten years of major development in chemical technology] 038-2023 The first domestic hydrogen liquefaction system using domestic continuous heat exchangers was successfully launched https://bbs.hcbbs.com/thread-3605124-1-1.html (Source: Huahaichuanliu-Haichuan.com)