Cost optimization method for oxygen system of iron and steel enterprise

An oxygen system and cost-optimized technology, applied in general control systems, control/regulation systems, energy industries, etc., can solve problems such as waste of resources and high power consumption

Inactive Publication Date: 2020-03-31
AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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Problems solved by technology

[0005] The purpose of the present invention is to provide a cost optimization method for the oxygen system of iron and steel enterprises, which solves the problems of high power consumption and waste of resources, can effectively reduce the power consumption of the oxygen system, and at the same time improve the economic benefits of the system by selling liquid oxygen, etc.

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  • Cost optimization method for oxygen system of iron and steel enterprise
  • Cost optimization method for oxygen system of iron and steel enterprise
  • Cost optimization method for oxygen system of iron and steel enterprise

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Embodiment Construction

[0072] An example is given below, and the specific implementation manner of the present invention is further described in detail.

[0073] The 24-hour oxygen system production data of a steel company is used to verify the optimization effect of the model. The iron and steel enterprise currently has 75000Nm 3 / h 2 sets of oxygen generators, 3 liquid storage tanks (4000m 3 Liquid oxygen, 4000m 3 Liquid nitrogen, 1000m 3 One liquid argon storage tank), 5 oxygen spherical tanks, 2 medium-pressure nitrogen balloon tanks, 3 low-pressure nitrogen balloon tanks, and 1 argon balloon tank. Oxygen reserve capacity is 75000Nm 3 / h, the backup capacity of low pressure nitrogen is 52000Nm 3 / h, the backup capacity of medium pressure nitrogen is 25500Nm 3 / h, the reserve capacity of liquid argon is 2400Nm 3 / h. The operating point of the air separation unit can be within ±20000m within the range of design working conditions 3 / h range to achieve rapid load changes. The model takes ...

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Abstract

The invention discloses a cost optimization method for an oxygen system of an iron and steel enterprise, and belongs to the technical field of steel enterprise oxygen system energy conservation. The method comprises the following steps: conventionally starting an oxygen generator, starting an oxygen generation variable load, establishing a cost function in a scheduling period, dividing into low-cost (CL), high-cost (CH) and flat-cost (CA) time periods according to peak-valley-flat electricity prices, determining a target function with optimal economic benefits, and establishing constraint conditions of a model. The method has the advantages that the oxygen production plan of the oxygen production unit can be reasonably arranged, the oxygen production cost is reduced, and the executabilityof the cost optimization plan is ensured; and economic operation is guaranteed on the premise that an enterprise oxygen system is safe and stable.

Description

technical field [0001] The invention belongs to the technical field of energy-saving oxygen systems of iron and steel enterprises, and in particular provides a method for cost optimization of oxygen systems of iron and steel enterprises. Background technique [0002] Iron and steel enterprises are industries with high energy consumption and high emissions. Oxygen system is an indispensable energy equipment in the smelting process. Oxygen production equipment consumes a lot of electricity, and the cost of electricity consumption is the main cost of oxygen system. For industrial electricity consumption, the electricity price during peak hours is often more than twice that of off-peak hours, and improper deployment of oxygen systems often increases energy costs for enterprises. The relationship between the total power consumption of the oxygen generator and the cost of oxygen production requires optimizing the economy of the oxygen generator according to the overall power consu...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042Y02P80/10
Inventor 张子阳孙彦广马湧梁青艳
Owner AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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