Gas-making workshop integrated control system for synthesis ammonia production and use method thereof

Abstract

The invention provides a gas-making workshop integrated control system for synthesis ammonia production and a use method thereof. The system comprises a workshop coordination control station, subsystem optimization control stations corresponding to a plurality of gas-making furnaces and I / O (Input / Output) stations, wherein the subsystem optimization control stations are connected with a plant-level dispatching station by the workshop coordination control station via signals; when in use, the subsystem optimization control stations firstly reckon dummy parameters such as flame layer upward shift, flame layer downward shift, oxide layer thickness increase, oxide layer thickness decrease, deflected burning, scabbing and the like according to the procedure parameters measured by actual instrument clusters, and then carry out optimization control with a self-learning function on subsystems according to the actual procedure parameters and the dummy parameters; and the workshop coordination control station realizes coordination between a gas-making workshop and the whole synthesis ammonia production process according to the signal of the plant-level dispatching station and the operation conditions of the subsystems. The system and the use method have the following beneficial effects: the parameter measuring points are more comprehensive, and the optimization controllability of singlefurnace operation is more perfect; and moreover, the system and the method have stronger coordination with all parts of the whole process, and are beneficial to gas making and stable operation of thewhole process in high efficiency and low consumption states.

Description

technical field [0001] The present invention relates to a synthetic ammonia production system, in particular to a comprehensive control system for a gas-making workshop used in the production of synthetic ammonia and its use method, and is particularly suitable for adding monitoring of parameters in the gas-making process and introducing an optimization control station with a self-learning function Implement the optimization of single furnace operation and realize the stable operation of the gas-making workshop and the whole process at the level of high-efficiency and low-consumption operation through coordinated control with all parts of the whole process, so as to achieve the purpose of saving energy and reducing consumption. Background technique [0002] The gas-making workshop undertakes the task of providing N2 and CO+H2 (semi-water gas) for the synthesis of ammonia (NH3) in the ammonia synthesis enterprise. It is the leader of the entire ammonia synthesis enterprise and...

AI Technical Summary

Problems solved by technology

Although this invention can determine the oxygen concentration in the oxygen-increasing air and the time for increasing oxygen according to reference elements such as blowing gas or upstream and downstream gas components and furnace temperature, and adopts a feed-forward plus feedback algorithm and adjustment link to ensure the oxygen-increasing concentration Adjustability and stability, but for the energy saving and optimization of gas production, it still has the following deficiencies: First, the purpose of this invention is to ensure the adjustability and stability of the oxygen concentration, to ensure the new The implementation of the process is only a small part of the optimal control of single furnace operation, with fewer functions, and cannot fully realize the optimal control of single furnace operation; secondly, the invention realizes the basis for ensuring the adjustability and stability of oxygen concentration It is the composition of the upstream and downstream gas and the temperature of the furnace. The parameters are too few, which will damage the realization of the effect of ensuring the adjustability and stability of the oxygen concentration, not to mention meeting the needs of the optimization control of the entire single furnace operation; third, the invention The oxygen-increasing intermittent gas preparation control station is relatively independent inside the gas-making workshop, not only lacks coordination with each other, but also lacks coordination with the rest of the process of synthetic ammonia production outside the gas-making workshop. Solving the stability problem of production from the perspective of the whole process is not conducive to further energy saving and consumption reduction

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