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The electrical cable installation for the 1.8 million tons per year methanol-to-olefins plant in the Tianjin Bohua project has officially begun. Author/Source: Yaha Coal Chemical Industry. Date: August 26, 2020. Clicks: 65. It was learned on August 21 that the electrical cable installation for this plant, which is being carried out by Sinopec Fourth Construction Electrical and Instrumentation Company, has officially started. The 1.8 million tons per year methanol-to-olefins plant at the Tianjin Bohua project has 156 kilometers of electrical cables. Before the cables were laid, construction technicians conducted a detailed survey of the laying routes on site. To ensure proper safety measures and that the construction progress was not delayed, the Electrical and Instrumentation Department of Sinopec Fourth Construction Company assigned responsibilities to specific individuals: technicians were responsible for developing detailed laying plans, safety officers were in charge of formulating emergency response plans, and quality inspectors were responsible for checking the placement of the laying equipment. Everyone involved in the construction process had a clear role to play. During the cable laying from pipelines 101, 102, and 104 in the plant area to the pumps, the cable path had to be lowered vertically by 13 meters, and it was not possible to construct a working platform for this 13-meter section. To overcome the difficulties, the workers used cable trays and existing structural steel beams as aids to safely secure the cables in place. Once the cables were in place, since the distribution room was shared with other affiliated units, the available time for work was very limited. To avoid chaos resulting from overlapping cable installations, the Electrical and Instrumentation Department of Sinopec Fourth Construction Company negotiated with those other units to carry out construction at different times, which ensured both the progress of cable installation and the quality of the bundling process. Tianjin Bohua’s 1.8 million-ton methanol-to-olefins MTO unit utilizes the DMTO-II technology developed by the Dalian Institute of Chemical Physics. Olefin separation is carried out using the olefin separation technology from the American company LUMMUS, to produce olefin products primarily consisting of polymeric-grade ethylene and propylene. On August 7, the lifting work for the 34-meter pipeline attached to the tower in the Tianjin Bohua MTO project, carried out by Sihua No. 4 Lifting Company, was completed, marking the safe and smooth entry of the project into the final stage of lifting operations. The weight of the pipeline attached to the water washing tower in the quench section of Tianjin Bohua’s MTO project is 17 tons. This pipeline consists of a 34-meter straight section and two 12-meter long elbows; due to its irregular shape, it was difficult to determine appropriate lifting points. The project team conducted thorough calculations and designed two custom-made plate-type lugs for lifting the pipeline. At 8 a.m. that day, the 280-ton crawler crane was slowly raised; using a 60-meter main boom and a 42-meter auxiliary boom in tower configuration, it lifted the pipeline to its intended position at 43 meters height. The entire team worked tirelessly for 6 hours under the scorching sun to successfully install the pipeline, thus completing this lifting task successfully.