Vacuum set system of glycol steam injection pump
A technology of vacuum unit and jet pump, applied in the directions of jet pump, pump, pump device, etc., can solve the problems such as performance decline of vacuum unit, blockage of three-stage jet pump, failure to meet production requirements, etc., so as to reduce the failure rate and avoid production. Failure, the effect of reducing the incidence of failure
Inactive Publication Date: 2013-02-06
JIANGYIN HUAHONG CHEM FIBER
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Problems solved by technology
Since the first-stage jet pump is a high-temperature heat medium jacket, it is difficult for these substances to stay in the jet pump, so it will not be easily blocked; while the second-stage jet pump and the third-stage jet pump do not have a high-temperature heat medium jacket, this part of the sundries , it will easily adhere to the jet pump, so the ethylene glycol steam jet pump vacuum unit system often has blockage of the secondary jet pump and the tertiary jet pump within a few days, resulting in a decline in the performance of the vacuum unit and failing to reach Production requirements, so it is necessary to stop immediately for emergency repairs, resulting in production failures
Method used
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Embodiment Construction
[0023] see figure 1 , an ethylene glycol vapor jet pump vacuum unit system that the present invention relates to, which includes a final polycondensation scraper condenser 11, a second precondensation scraper condenser 12, a vacuum liquid seal tank 5 of the vacuum unit, and sequentially arranged from front to back The primary jet pump 21, the first spray condenser 31, the secondary jet pump 22, the second spray condenser 32, the third jet pump 23, the third spray condenser 33 and the vacuum liquid ring pump 4, the The air inlets of the first-stage jet pump 21, the second-stage jet pump 22 and the third-stage jet pump 23 are all fed with EG steam, and the air inlet of the first-stage jet pump 21 is connected with the gas outlet of the final polycondensation scraper condenser 11 , the air inlet of the final polycondensation scraped condenser 11 is also connected to the gas outlet of the final polycondensation reactor, and the top of the final polycondensation scraped condenser 1...
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The invention relates to a vacuum set system of a glycol steam injection pump, which is characterized in that second-grade injection pumps (22) are arranged between an air outlet of a first spraying condenser (31) and an air inlet of a second spraying condenser (32); two second-grade injection pumps (22) are arranged in parallel; third-grade injection pumps (23) are arranged between an air outlet of the second spraying condenser (32) and an air inlet of a third spraying condenser (33); two third-grade injection pumps (23) are arranged; and more than two uniformly-distributed nozzles are arranged at the tops of a final condensation polymerization scraper plate condenser (11) and a second pre-condensation-polymerization scraper plate condenser (12). The vacuum set system of the glycol steam injection pump has the advantages of avoiding the blocking of the second-grade injection pumps and the third-grade injection pumps, avoiding a manufacturing fault caused by parking and repairing, and guaranteeing the stable operation of the vacuum set system of the glycol steam injection pump.
Description
technical field [0001] The invention relates to a vacuum unit system of an ethylene glycol vapor jet pump. Background technique [0002] When producing differentiated products, the EG (ethylene glycol) jet pump vacuum unit system often breaks down, which leads to abnormal operation and must be shut down for processing, which has a great impact on the system and a large economic loss for shutdown processing. It has been found through research that during the production operation, due to the high content of low melting point substances, oligomers and ash in the raw materials, under high vacuum conditions, after the ethylene glycol vapor is drawn out by the vacuum unit, it enters the first stage of injection in turn. pumps, secondary jet pumps and tertiary jet pumps. Since the first-stage jet pump is a high-temperature heat medium jacket, it is difficult for these substances to stay in the jet pump, so it will not be easily blocked; while the second-stage jet pump and the thir...
Claims
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Login to View More IPC IPC(8): F04B41/06F04F5/22
Inventor 袁朝杜永峰
Owner JIANGYIN HUAHONG CHEM FIBER