A one-button start-stop control method for an argon air separation unit with external compression
A technology of air separation unit and start-stop control, which is applied in the direction of pump control, refrigerator, refrigeration components, etc., can solve the problems of slow recovery of production conditions of the plant, easy misoperation, long start-up and stop process, and reduce manpower cost, the effect of avoiding human error
Active Publication Date: 2021-12-03
HANGZHOU HANGYANG
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[0008] The start-up and shutdown process of the existing externally compressed argon air separation unit is generally carried out by the operator in the central control room through the handheld communication device according to the display parameters of temperature, pressure, flow, liquid level and analysis measuring points on the DCS or PLC system operation station. The equipment cooperates with the on-site operators to jointly perform remote or on-site operations on the valves, motors, and equipment of the air separation unit. The start-up and stop process requires a large number of professional operators to work together. The operators have high labor intensity and are prone to misoperation. The process takes a long time, and the recovery of the production status of the device is slow
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[0035] The present invention will be introduced in detail below in conjunction with the accompanying drawings and specific embodiments: a kind of one-button start-stop control method for the externally compressed argon air separation plant, including the one-key start-up control method of the externally compressed argon air separation plant and the external A one-button shutdown control method for an argon air separation unit with compression; the argon air separation unit with external compression includes an air compressor system, an air precooling system, a molecular sieve purification system, an expander system, an oxygen and nitrogen rectification system, an argon refining Distillation system; the present embodiment is a set of oxygen output is 30000Nm 3 / h air separation unit;
[0036] combined with Figure 1 to Figure 2 As shown, the implementation steps of the one-button start control method:
[0037] 1. When the public engineering conditions and the start-up conditi...
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A one-button start-stop control method for an externally compressed argon air separation unit relates to the technical field of air separation equipment automation engineering. The argon air separation unit with external compression includes an air compressor system, an air precooling system, a molecular sieve purification system, an expander system, an oxygen and nitrogen rectification system, and an argon rectification system. The invention provides a one-key start-stop control method. When the operator presses the one-key start-stop soft button, the DCS or PLC system completes the automatic start-stop of each system of the device step by step, which makes the external compression belt argon air separation device cumbersome. The start-up and stop operation process of the machine is simplified to one-button operation, which effectively reduces labor costs, shortens the start-up and stop time of the device, and can quickly resume production after the device trips.
Description
technical field [0001] The invention relates to the technical field of automation engineering of air separation equipment, in particular to a one-button start-stop control method of an argon air separation unit with external compression. Background technique [0002] Air separation units with external compression and argon generally use molecular sieves to purify air, turbo expanders with pressurization, external compression of oxygen and nitrogen, and full rectification to produce argon without hydrogen. [0003] After removing dust and mechanical impurities in the filter, the raw air enters the air turbine compressor to be compressed to the required pressure, and then sent to the air cooling tower for cleaning and precooling. Air enters from the lower part of the air cooling tower and exits from the top. The water supply of the air-cooling tower is divided into two sections. The lower section of the air-cooling tower uses circulating water cooled by the water treatment sy...
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IPC IPC(8): F25J3/04F25B49/02F04B49/03
CPCF04B49/03F25B49/022F25J3/04
Inventor 朱晓平夏鸿雁王凯周小莹韩帅应天旷杨渭国褚瑞华刘尚进毛文俊唐迪赵仁巍张锦春蒋维
Owner HANGZHOU HANGYANG