Steam supply system and method of organic amine desulfurization device in fire power generator unit

Abstract

The invention discloses a steam supply system and method of an organic amine desulfurization device in a fire power generator unit. The steam supply system comprises a high pressure cylinder, a middle pressure cylinder, a reheating cold section, a reheating hot section, a secondary steam coupled tank, a four section steam extraction, a high pressure by-pass system and a lower pressure by-pass system; the high pressure by-pass system is arranged on the place between a furnace main steam pipeline and the high pressure cylinder, the high pressure by-pass system is connected with the reheating cold section and the secondary steam coupled tank, the four section steam extraction is connected with the steam supply end of the organic amine desulfurization device; a hydraulic control butterfly valve is arranged on the place between the four section steam extraction and the steam supply end of the organic amine desulfurization device, and a heat supply butterfly valve is arranged on the place between the high pressure cylinder and the middle pressure cylinder and the lower pressure by-pass system. The steam supply system and method of the organic amine desulfurization device in the fire power generator unit is reasonable in structure, the steam supply mode can be run separately or in parallel, when the machine is low in load or a neighboring machine is started, the desulfurization device is supplied sufficient steam in time, so that the problem of below standard discharge caused by insufficient resolving of the desulfurization device is avoided, damages to the absorption tower fillings are reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a steam supply system and method for an organic amine desulfurization device in a thermal power unit. Background technique [0002] There are two sets of thermal power units in a thermal power plant. When one unit and the organic amine desulfurization device are operating normally, and the other unit and the organic amine desulfurization device are in the process of starting up, when the operating unit is under low load, it cannot provide enough steam for desulfurization. , Only when the starting unit is under a certain load can a sufficient amount of steam be provided to the local desulfurization device to start. [0003] The supply of desulfurization start-up steam depends on the start-up and load time of the unit, which usually lasts for about ten hours. During this period, the standard discharge of the desulfurization unit cannot be guaranteed, and the damag...

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Problems solved by technology

During this period, the standard discharge of the desulfurization unit cannot be guaranteed, and the damage to the packing of the absorption tower cannot be evaluated because the large circulation of the amine liquid system cannot be put into operation.

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