Energy Analysis And Energy Saving Optimization Of Building Ceramic Production System

Building ceramics industry is not only a typical high energy consumption industry,but also an important part of the national economy.The production process of building ceramics involves many processes.Combining with the actual production of enterprises,the energy-saving methods are analyzed and the targeted energy-saving schemes are put forward,which is an effective method to reduce the energy consumption of enterprises.This paper takes three different building ceramic production roller kiln system as an example,carries on the field investigation and the data collection,and carries on the analysis research based on the experimental test data and the operation parameter.The heat exchange network of the production process was analyzed by means of pinch design method,the weak link of building utilization rate was determined and the optimization scheme was put forward.A set of waste heat recovery scheme is proposed for the smoke extraction from the kiln head of no.1 building ceramic production system.The energy efficiency of 1# building ceramic production system was analyzed,and then the impact of pinch technology analysis and flue gas waste heat refrigeration on the system was tested.The following conclusions are drawn:(1)Conduct field investigation and test on a typical architectural ceramics factory,and select a group of test data from different areas for com parison.The heat exchange network analysis model of ceramic production process was established respectively,and the amount of public works required by each part of the three systems was calculated.The system was optimized and a new heat transfer scheme was put forward,that is,the hot flue gas at the outlet of the drying kiln and the mud entering the spray drying tower were transferred in advance.The results show that the energy saving efficiency of no.1 kiln production system after optimization is 2.7%.The energy saving efficiency of no.2 kiln production system is 6.3%;The energy saving efficiency of the 3# kiln production system is 3.0%.(2)For the smoke exhaust at the kiln head of the burning roller kiln,a design scheme of lithium bromide absorption refrigeration is proposed in this paper to utilize waste heat for the smoke exhaust at the kiln head of no.1 burning roller kiln.The corresponding mathematical model is established for the heat transfer process of each heat exchanger part of the system,and the corresponding cooling capacity is obtained by software modeling analysis after given flue gas parameters.(3)Based on the second law of thermodynamics,exergic analysis model of building ceramic production system was established for test data of No.1 kiln.The whole system was divided into three subsystems,namely spray drying tower system,drying kiln system and roller kiln firing system,for energy model analysis respectively.The analysis of the three subsystems found that the exergy loss of the roller kiln firing system was the largest,the exergy loss rate was 62.30%,and the exergy loss coefficient was 36.18%,which was caused by the loss of the fuel combustion reaction process and irreversible heat transfer of the gas-solid heat transfer of the firing system.Further to pinch optimization as well as waste heat cooling system after the addition of 1 # kiln production system to analyze exergy,universally exergy efficiency to 46.29%,increased by 3.83%,compared with before optimization of pinch analysis is verified further from exergy system put forward the feasibility of energy saving plan,as well as waste heat exergy refrigeration system to the production system efficiency.