Winter to prevent oil pump pipe liquid solidification method

prevent pipe liquid solidification, the method of preventing pipe liquid solidification method

winter oil pump stop running after oil in pipeline condensation extremely easily, if the steam purging does not reach the designated position, pipeline coagulation death impassability, will directly affect the normal work.

as a catalytic cracking unit of luoyang branch to prevent pipe liquid solidification method: a total of three oil pump ( P1329- 1 - 3) , open one spare 2 sets at ordinary times, but three water pump problems in different degrees, the no. 1 oil pump impassability, unable to preheat: oil pump valve leakage, 2 and 3 and leakage quantity is bigger, can't normal maintenance pump; 3 the pump end face sealing oil line. The above concerns directly threatening the safety of plant production, group of companies in the security check clear request, as soon as possible for rectification of this hidden trouble. Branch decided to short time to cease, and for this local purging, forecast of three oil pump replacement processing. On the premise of ensure safety for shutdown, repair, starting time in 22 hours.

according to the above requirements, in order to ensure the shutdown, repair, ensure safety and to start the whole process, to finish the task according to the reality of the is implementing HSE management system in accordance with the hazard identification and risk assessment, to identify each step in the hazard and possible accident, according to the recognition of the possibility of harm and the severity of the consequences of the risk evaluation, so as to take measures to eliminate the hazards, reduce risk. First oil pump repair work steps barb figure analysis, item by item according to the bones diagram analysis job hazard analysis ( JHA) And then it is concluded that the oil pump repair major ( Intolerable) The risk of ( R = 15) , specific have: heavy oil condensate line; Add position of blind flange valve leakage, oil pump export pipeline has oil and gas, test analysis is unqualified; Take time to not in oil, etc. According to these major risks targeted risk control measures, can reduce the risk, to prevent potential accidents.

so when shutdown purge should take the following measures.

1, the slurry recycle oil, raw material feeding and pre heating open the nozzle, pipeline heat preservation. Purging slurry system, oil slurry recycle system, one system pipeline. Keep raw oil, oil refining, wax cycle ( Not into the fractionating column) 。 Often slag into the capacity of 1321 line, 1324 line wax into the tower, come back are connected to the residual oil refining, refining fractionating column line for continuous live line.

2, slurry, slurry recycle, one system purging process is as follows.

fractionator bottom pulled out after the valve to the steam - 1321 1329 - Vice line - heat exchanger Slurry oil - posterior process Tank farm.

1329 - pump Slurry recycle line - Pre - before the nozzle Oil raw materials in advance.

pump 1325 ( To the steam) - In 1344, in 1343, in line - 1325 1324 - Tower, 1321.

sweep line, line process, slurry heat exchanger l328 sweep line line, cold water all the way at the same time, finally achieve the tube side thoroughly sweep line, the other closed entrances hand valve all the way, to keep the temperature through steam. 1325 not purge, heat exchanger and vice line then, sweep cold 1324 should as far as possible, in case the condensate line; When necessary, passed in 1344, in 1343 with steam heating medium bottom, stable system temperature.

common related oil pump products: pump, gear pump

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the original news articles by professional pump pump industry.

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