Industrial intelligent compound fertilizer raw material proportioning method based on linear programming

Abstract

The invention relates to an industrial intelligent compound fertilizer raw material proportioning method based on linear programming, and the method comprises the following steps: S1, selecting raw material types according to product parameters, the parameters comprising grade, sulfenyl / chlorine group and chloride ion upper limit parameters; S2, establishing variables for the selected raw material types; S3, taking the sum of the use amounts and unit price products of all the raw materials as a cost objective function; S4, calculating the contents of three nutrients N, P and K of the compound fertilizer, wherein the calculation method is as follows: dividing the sum of the mass of each raw material and the product of nutrients by machine hour; S5, constructing a constraint inequality according to the allowable fluctuation range of the product grade, the chloride ion upper limit, the chemical reaction and the process constraint; and S6, solving to obtain nutrients meeting the requirements and the raw material ratio meeting the production process demands with the lowest cost.

Description

technical field [0001] The invention belongs to the technical field of industrial digitization and intelligence, and provides an industrial intelligence compound fertilizer raw material ratio method based on linear programming. Background technique [0002] The current research results show that the nutrients of Zhongkong compound fertilizer are unstable, and there are two situations: one is lower than the national standard requirements. In this case, it needs to be mixed with high-nutrient products to obtain products that meet the national standard requirements; two. The nutrient is higher than the national standard, and every percentage point higher will increase the cost by about 20 to 30 yuan. In both cases, post-mixing is required, which seriously increases the production cost. At the same time, with the changes in the international and domestic markets, the price of raw materials fluctuates greatly, and most enterprises have been using the same raw material formula fo...

AI Technical Summary

Problems solved by technology

In both cases, post-mixing is required, which seriously increases production costs.

At the same time, with the changes in the international and domestic markets, the price of raw materials fluctuates greatly, and most enterprises have been using the same raw material formula for production, and cannot realize dynamic and timely adjustments, resulting in relatively high costs, and there is a lot of room for (cost) reduction

[0003] Domestic compound fertilizer production processes are mainly shotcrete granulation, ammoniation granulation, etc. The main process is acid-base neutralization and physical mixing without complicated chemical reactions. However, due to the large time lag of the production system (from raw materials to tubular It takes about 40 minutes from the reactor to the central control granulation), the retention of raw materials in the equipment, the flushing of materials, the fluctuation of raw material nutrients and other factors, resulting in large fluctuations in the nutrients of compound fertilizers

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