Research On The Diagnosis And Reconstruction Of Air Conditioning System For Dust Pollution Plant

Productive dust is the main by-product of industrial plants.It not only endangers the health of employees,but also causes production safety problems such as fire and explosion,and affects the life of equipment and product quality.The air-conditioning system in the plant will also be contaminated by dust,which will affect the indoor heat and humidity environment.The air-conditioning system will also create a uniform dust concentration field while creating a uniform temperature field,and will spread the dust from the source of pollution to all parts of the room.Therefore,the research in this paper is of great significance to the design and renovation of air-conditioning systems for dust-polluted buildings,disaster prevention and reduction in industrial plants,and labor protection for employees.In this paper,Computational Fluid Dynamics(CFD)simulation method was used to analyze and optimize the airflow organization of industrial plants with dust pollution.A number of applicable airflow organization forms were proposed for industrial plants,and various forms of control pollution transmission and indoor heat and moisture effects were compared and analyzed.The research results can be used as the design of the air-conditioning airflow organization in the dust pollution plant in China,the design reference for the reconstruction of the air-conditioning system of the existing dust pollution plant,and the collision jet air supply method can be used for reference in industrial plants.The research work of this paper was carried out on the air-conditioning system of Hebei Shuangyang Grinding Wheel Manufacturing Co.,Ltd.The air-conditioning system of the industrial plants was additionally equipped with a ventilation and dust removal system to eliminate dust.First,through on-site investigation,the wheel production materials,process flow,processing equipment,plant environment and other influencing factors were comprehensively analyzed.Finally the location of dust pollution sources was determined.At the same time,field surveys were conducted.Through data analysis and numerical simulation,it was found that the air-conditioning system of the plant was not suitable for dust-polluted buildings.Dust deposition on the surface of the air-conditioning heat exchanger caused the indoor heat and humidity environment to fail to meet the standards.At the same time,the air-conditioning system of the plant air-conditioning system and interference of the exhaustairflow has caused indoor dust to be effectively controlled and eliminated.Secondly,based on the numerical simulation method,the air flow organization scheme for industrial plants with dust pollution was optimized.It was concluded that the control of indoor pollution and the indoor heat and moisture effects of air flow using the collision jet scheme is superior to the traditional ones.But the collision jet scheme unilateral air supply method has a blind zone.the collision jet dual-side air supply scheme,the air-conditioning equipment and tuyere evenly arranged on both sides of the plant,can solve it and achieve better results.Finally,the research results were applied to the overall improvement of the air-conditioning system of the production plant of Hebei Shuangyang Grinding Wheel Manufacturing Co.,Ltd.The air-conditioning system with two-stage filtration was determined through using DeST software and multi-objective decision-making method,and the heat exchanger was applied with coarse and static electricity Filtering double protection measures,giving the design parameters of the collision jet air supply method,can be used as a reference for the design of collision jet air supply.