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A waste steam recovery and factory technology, applied in the field of petrochemical industry, can solve the problems of low recycling rate, increased consumption of circulating water, heat recovery of waste steam, etc., and achieve the effect of saving energy, eliminating heat pollution, and good process continuity
Inactive Publication Date: 2017-12-12
SHANDONG SHENGXING CHEM
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[0004] The current exhaust steam is mainly recovered by the water cooler to recover part of the condensed water. The heat of the exhaust steam is not recovered, and the consumption of circulating water is increased, and the recycling rate is low.
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[0010] Below in conjunction with accompanying drawing, the present invention will be further described:
[0011] as the picture shows:
[0012] Open the condensed water inlet 1, inject the condensed water into the condensed water tank 2, lead the exhausted steam in the condensed water tank 2 from the upper end of the condensed water tank 2 to the mixing water tank 5, open the desalted water inlet 4, and inject 45°C cold desalted water , the 45°C cold desalted water is mixed with the exhaust steam of the factory for heat exchange, most of the exhaust steam is condensed and recovered, and the rest is led to the deaerator 6 for deoxygenation steam, and the desalinated water heated to about 85°C is sent from the mixing tank 5 to the deaerator 6 for degassing and oxygen removal in the deaerator 6, the condensed water drawn from the lower port of the condensed water tank 2 is led to the deaerator 6 through the condensed water pump 3, and the gas in the deaerator 6 Degassing and deo...
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Abstract
The invention discloses an efficient plant dead steam recycling device. The efficient plant dead steam recycling device comprises a condensed water inlet, a condensed water tank, a condensed water pump, a desalted water inlet, a mixed water tank, a deoxidizer, a deoxidized water outlet, a gas outlet, a heating furnace water injection pump and a deoxidized water pump. The efficient plant dead steam recycling device is characterized in that dead steam on the top of the condensed water tank is introduced into the mixed water tank to be mixed with 45-DEG C cold desalted water for heat exchange, most dead steam is recycled through condensation, the remaining part is introduced into the deoxidizer to serve as deoxidization steam, the desalted water heated to about 85 DEG C is delivered to the deoxidizer, deaeration and deoxidization are conducted in the deoxidizer, separated non-condensable gas such as oxygen is exhausted from the gas outlet, and deoxidized water obtained after deoxidization is discharged from the deoxidized water outlet to be provided for steam manifold steam production and heating furnace pipe water injection. Compared with the prior art, the efficient plant dead steam recycling device has the advantages that the technology is simple, the process continuity is good, energy saving and consumption reducing are achieved, safety and environmental protection are achieved, complete closed recycling of the dead steam can be achieved, a steaming phenomenon is completely eradicated on the site, heat waste and heat pollution are eliminated, energy resources are saved, and clean production is achieved.
Description
1. Technical field [0001] The invention relates to the field of petrochemical industry, in particular to a high-efficiency factory exhaust steam recovery device. 2. Background technology [0002] The steam discharged from the petroleum refining process or the secondary steam generated in the recovery process of high-temperature condensed water are all called spent steam. Due to its low pressure, exhaust steam is often discharged directly, which not only causes a serious waste of heat and steam resources, but also brings huge economic losses to the enterprise, and pollutes the environment. Generally, process steam requires compulsory recycling. Can only be discharged after passing the test. The practice is nothing more than as heat tracing, waste heat of various materials, evaporation, etc., to realize waste heat recovery and water recovery. [0003] Exhaust steam is unpolluted low-temperature steam, which can be sent back to the boiler or water supply system, or mixed with...
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