Optimization method and optimization device for phosphoric acid production process

An optimization method and production process technology, applied in chemical instruments and methods, phosphorus compounds, chemical process analysis/design, etc., can solve problems such as high operating costs, difficult control, low utilization rate of phosphoric acid industry resources, etc., to improve economic benefits Effect

Pending Publication Date: 2021-03-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, due to the lack of in-depth understanding of the acidolysis mechanism, crystallization and hydration phase transition laws in the hemihydrate-dihydrate recrystallization process, the current production operations, control and decision-making of the entire process still largely rely on knowledge and experience, resulting in High cost, low efficiency, large resource and energy consumption, unstable product quality and other issues, the simulation and optimization of the production process is the core to solve the current problem of low resource utilization and difficult control in the phosphoric acid industry
[0006] At present, the energy saving and optimization of phos

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  • Optimization method and optimization device for phosphoric acid production process
  • Optimization method and optimization device for phosphoric acid production process
  • Optimization method and optimization device for phosphoric acid production process

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Embodiment 1

[0272] The present embodiment provides a kind of optimization method of phosphoric acid production process, and described optimization method comprises the steps:

[0273] (1') Obtain process data in wet-process phosphoric acid production;

[0274] The production process data includes raw material data, equipment parameters, process control indicators, operating parameters and product parameters; the raw material data includes raw material flow, raw material composition and raw material properties; the raw material composition includes phosphate rock composition and sulfuric acid concentration; The composition of phosphate rock includes P 2 o 5 content, CaO content, F content and SiO 2 content, etc.; the raw material properties include phosphate rock particle size and phosphate rock density; the equipment parameters include equipment flow, equipment structure and equipment characteristic parameters; the equipment characteristic parameters include the size parameters of the r...

Embodiment 2

[0456] This embodiment provides an optimization device for the production process of phosphoric acid. The optimization device includes the following modules: a data module, a mechanism model module, a model correction module, and a decision variable optimization module; the data module is used to obtain process data for phosphoric acid production; The mechanism model module is used to build and / or call the mechanism model of phosphoric acid production; the model correction module uses the process data in the data module to correct the mechanism model; the decision variable optimization module constructs a mechanism model with Constraint conditions, oriented by the optimization goal, optimize the optimization model for the decision variables, and solve the optimization model; the optimization device also includes a scheme execution module for applying the optimized decision variables to phosphoric acid production.

[0457] The optimization device can implement the optimization m...

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Abstract

The invention provides an optimization method and an optimization device for a phosphoric acid production process. The optimization method comprises the following steps: constructing a production unitmechanism model for each device of a semi-water reaction process, a primary solid-liquid separation process, a crystal form conversion process and a secondary solid-liquid separation process, constructing a full-process production operation optimization model under constraint conditions by taking the maximum economic benefit as an optimization target, taking the operation parameters as decision variables, and solving the optimization model to obtain an optimal decision variable, thereby fully exerting the potential of the existing production process, improving the overall economic benefit ofan enterprise, and having important practical significance for improving the production operation level of the whole process.

Description

technical field [0001] The invention relates to the technical field of phosphoric acid production, in particular to an optimization method and an optimization device for a phosphoric acid production process. Background technique [0002] Phosphoric acid is an important chemical raw material, not only the main raw material for high-concentration fertilizers, but also an intermediate raw material for the manufacture of various fine phosphate products. Phosphoric acid production process can be divided into wet phosphoric acid and thermal phosphoric acid. Due to the high energy consumption and high production cost of the thermal phosphoric acid process, the wet phosphoric acid process is mainly used at home and abroad to treat phosphorus concentrate. [0003] The wet phosphoric acid process can be divided into semi-water method, dihydrate method, semi-water-dihydrate method and dihydrate-semi-water method. Among them, the dihydric method occupies a leading position in my count...

Claims

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Application Information

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IPC IPC(8): C01B25/229G16C10/00G16C20/10G16C20/70
CPCC01B25/229G16C20/10G16C10/00G16C20/70
Inventor 肖炘曾玉娇杨刚陆冬云聂亚玲朱闽耿爱东
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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