Regulating method of pressure stabilization of public steam pipe network for low-pressure production of iron and steel enterprises
A technology for producing steam with stable pressure. It is used in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc. It can solve problems such as fluctuation and unstable consumption of external steam users, and achieve increased steam recovery, improved stability and stability. Adaptive, pressure-stabilizing effects
Inactive Publication Date: 2013-05-08
HANGANG GRP HANBAO IRON & STEEL +1
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a method for adjusting the pressure stability of the public pipe network of low-pressure production steam in iron and steel enterprises. The problem of pressure stability in the steam public pipe network caused by fluctuations
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Embodiment Construction
[0021] Specific embodiments of the present invention are as follows:
[0022] (1) The recovery of steelmaking steam changed from the original constant pressure recovery to the constant flow recovery mode, which successfully solved the problem that the sudden change of the recovery flow rate of steelmaking waste heat steam had an impact on the steam pipe network. The pressure of the steam generated by the waste heat recovery in the steelmaking plant is 2.5-3.0MPa, and the pressure of the external steam pipe network is 0.9-0.98MPa. The steelmaking grid-connected steam volume suddenly increases sharply during converter blowing (the maximum increase is 40-60t / h), which causes the grid-connected steam pressure of other steam source points in the steam pipeline network to increase, resulting in large fluctuations in the pressure of the entire steam pipeline network. Considering the characteristics of large pressure and flow changes of steelmaking recovery steam during converter blow...
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The invention relates to a regulating method of pressure stabilization of a public steam pipe network for low-pressure production of iron and steel enterprises, belonging to the technical field of a regulating method of pressure of a pipe network. The invention is used for solving the problem of pressure stabilization of a public steam pipe network caused by frequent large-amplitude fluctuation because of unstable consumption of external steam users. The invention has the technical scheme that the control mode of a synchronized steam regulating valve arranged behind a heat accumulator is downstream flow regulation, and the set upper limit of flow is 30-35t / h; when a steam turbine operates, the pressure, the temperature and the vacuum degree of a pressure equalizing box are improved; and a'rotating barrier' of a steam turbine of a power plant is used for steam extraction to replace a temperature and pressure reducer for supplying steam to an external steam pipe network for low-pressureproduction. The measures improve the stability and the adaptability of steam source equipment to finally achieve the purposes of still ensuring the stabilization of the pressure of the steam pipe network for enterprises, simultaneously increasing the recovery amount of steam and improving the comprehensive utilization efficiency of energy sources when users with larger fluctuation exist in the steam pipe network and a large amount of fluctuation exists in recovery users.
Description
technical field [0001] The invention relates to an adjustment method for stabilizing the pressure of a public pipe network for medium and low pressure production steam in iron and steel enterprises, and belongs to the technical field of pipe network pressure adjustment methods. Background technique [0002] In iron and steel enterprises, there are many users of steam, some users have relatively stable steam consumption, and some users have extremely unstable steam consumption due to the production process. It is difficult to keep the pressure stable. At the same time, some users in steel mills have very strict requirements on the stability of steam pressure. For example, steelmaking requires that the pressure of low-pressure steam supplied must be between 0.85 and 0.98 MPa, and the waste heat steam recovered by "vaporization cooling" must be incorporated into external steam. The pipe network also requires that the steam pressure of the pipe network is relatively stable in o...
Claims
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IPC IPC(8): F17D1/02F17D5/00
Inventor 彭兆丰李付俊马林贵周美清刘利波石风华唐俊锋叶志强
Owner HANGANG GRP HANBAO IRON & STEEL