Calculating method for energy consumption proportioning
A calculation method and energy consumption technology, applied in the calculation field of energy consumption allocation, can solve problems such as inaccurate allocation ratio, and achieve the effect of reliable calculation basis
Active Publication Date: 2015-05-13
SHOUGANG JINGTANG IRON & STEEL CO LTD
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[0004] The technical problem to be solved by the present invention is a calculation method for the energy consumption allocation of air separation products in the internal compression nitrogen expansion process, which solves the problem that the existing internal compression nitrogen expansion process air separation product energy consumption allocation ratio relies on empirical estimation. exact question
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[0053] Take the 75,000 liquid oxygen internal compression nitrogen expansion oxygen generating unit of a steel company as an example. The main power consumption equipment of this unit is shown in Table 1. The oxygen purity of this unit is 99.6%, the nitrogen purity is 99.999%, and the argon purity is 99.999%. , the processing air volume is 380000Nm 3 / h, the extraction rates of oxygen, nitrogen, and argon are 0.9497, 0.9747, and 0.6668, respectively. Table 2 shows the capacity of all air separation products of this unit. Applying the calculation method provided by the present invention, the energy consumption and apportionment calculation results of air separation products are shown in Table 3, wherein the output of liquid products is converted into standard gas products.
[0054] Table 1
[0055] Main energy-consuming equipment
Power (Kw)
36500
Nitrogen intake compressor
2700
Nitrogen cycle compressor first stage
1...
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The invention discloses a calculating method for energy consumption proportioning. The calculating method is applicable to an internal compression nitrogen expansion process which comprises single equipment and produces at least three air separation products. Each single equipment includes a multi-stage nitrogen compressor. The method includes: respectively calculating energy consumption proportion, on each single equipment, of each air separation product; summing up the energy consumption proportion, on each single equipment, of each air separation product, and calculating the energy consumption proportion of each air separation product during the internal compression nitrogen expansion process. By the calculating method, the energy consumption proportion of each air separation product is calculated, the energy consumption proportion, on each single equipment, of each air separation product is summed up, and accordingly the energy consumption proportion of air separation produces such as oxygen, nitrogen and argon can be determined reasonably and accurately.
Description
technical field [0001] The invention relates to the technical field of energy comprehensive utilization in the air separation industry, in particular to a calculation method for energy consumption allocation. Background technique [0002] Oxygen, nitrogen, argon and other industrial gases are widely used in chemical industry, metallurgy, electronics and other industries. At present, air separation methods mainly include adsorption, membrane separation and cryogenic distillation. Although the adsorption and membrane separation methods have relatively small investment and low operating costs, due to the constraints of their production capacity and product purity, cryogenic rectification still dominates the field of air separation. At present, there are two main types of cryogenic distillation: air expansion refrigeration cycle and nitrogen expansion refrigeration cycle. Although the nitrogen expansion internal compression process consumes slightly more energy than the air ex...
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IPC IPC(8): F25J3/04
Inventor陈恩军吴冰凌晨高剑波李杨邵文策吴礼云翟广永刘爱军安文刚杨熠
OwnerSHOUGANG JINGTANG IRON & STEEL CO LTD