“I’m focusing on energy savings; where are you? Making smart use of condensate during the commissioning of Petrochemical 402

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This post was last edited by Yitailong'er on 2016-4-14 at 22:41. New approaches to energy conservation and emission reduction. Background: At the beginning of operation, there are 2 towers using MTBE that need to be started up for circulation, resulting in a large amount of condensate. As a precursor to MTBE, the butadiene plant must wait until MTBE operations are running normally before it can be started according to the plan. A circulation of the condensate system is required in the initial stage. ============================================== The methanol washing and recovery unit of the MTBE plant is operational normally, but the condensate from the medium-pressure steam at 129°C generated by the heating in the methanol recovery tower C3103 cannot be processed; discharging it directly would represent a waste. To solve this problem, after much deliberation, a good solution was devised: use the condensate delivery line to send the liquid to the pipeline network, where it would then be reversed direction to deliver the steam condensate to the adjacent butadiene plant. However, another problem arises: without normal operation of the drive, very little condensate is produced, which is not sufficient to meet the conditions required to start the medium-pressure steam condensate pump P3112; as a result, the driving force for the condensate may be inadequate. Following discussions among the management, the pressure of the condensate tank V1501 was slightly adjusted to ensure that the medium-pressure steam condensate could be discharged smoothly. This solves the problem of sending off steam condensate during the period when the MTBE plant is not in operation. For the steam from the MTBE plant, the butadiene plant has a new destination for it. These condensates were heated by the reboilers of four columns, namely E1104, E1203, E1207, and E1113, thereby establishing a thermal circulation process for the butadiene condensates; the operators improved their operational skills as a result. Ultimately, the steam condensate is cooled in a cooler to 38°C and used as circulating wash water, which is then fed into units C1301, C1302, C1303, C1601, and C1601 as circulating wash water. As of the 19th, 100 tons of desalinated water have been saved. Through close coordination among the various units within the department, energy conservation and emission reduction have been achieved; at the same time, the operational skills of the staff have been improved – it’s truly a win-win situation! October 19, 2013, 21:12:01