Performance Optimization And Safety Analysis On Tunnel-type Drying Room Used For Containers

Container drying is a pipeline process，has a high energy consumption. In the workplacethere exist temperature and wind speed uneven phenomenon. Also the presence of volatileorganic compounds （VOC) bleeding could cause environmental pollution and endanger thehealth of workers. For these problems， the paper uses the Tunnel-Type drying room forcontainer designed by CIMC as the research object， from the nature of the security andmanagement of security perspectives to studying the tunnel-type container drying room andeventually by optimizing it into an efficient， environmentally friendly drying room.Firstly， the high energy consumption， low efficiency， uneven drying and VOCdischarge mainly due to the internal uneven distribution of the wind speed and temperature ofthe tunnel-type drying room. Therefore， it’s very important to simulate the unsteady gas flowand temperature fields in the tunnel-type drying room during the container drying on thepipeline by CFD tools for the next optimization. The current research on the VOC exist in thecontainer drying room is focused on how recycling， there is few research on the distributionof the VOC has been published. In this paper， CFD simulation was been used to study thedistribution of the VOC in the drying room and the diffusion of the VOC， identify someproblem may exist of the VOC discharge.Secondly， through field testing to assess the reliability of the simulation results，demonstrated that using CFD simulation tools can reach the level of application. maintainingthe original air temperature and air volume under the premise of ensuring the inlet and outletsize unchanged， by changing the position and distribution of the outlet to simulate theairflow inside the drying room， obtain the temperature， velocity distribution and thediffusion of the VOC and get the affection of the above parameters for drying， and whetherthe structure of the optimized drying room is more conducive to the recovery of VOC，reducing emissions of the VOC. Ultimately determine an optimal supply and exhaust designfor the drying room to improve the drying effect and reduce environmental pollution so as toachieve intrinsic safety requirements.Finally， from the security point of management， there are VOC discharge， hightemperature， noise and other issues exist in drying room which could be a huge threat to the workers when working a long time in it. The paper combined the relevant national standardsof VOC and the working environment of drying room，carefully analyzed the various aspectsof the drying room operating system， complete the occupational health hazards analysis，and propose the corresponding control measures. At the same time the paper makes a safetyanalysis and evaluation of the entire process of container drying room system within theanalytic hierarchy process to find out the potential risks that may exist in the entire dryingsystem to provide assistance for the system operation and management.