The method of wet ammonia for control of sulfur dioxide in flue gas can manufacture high efficient fertilizer. The process of wet ammonia method for control of sulfur dioxide in flue gas possesses many remarkable technical advantages like higher desulfurization efficient, simultaneously removing SO 2 and NOx, no heat consumption and no waste residues, and saving power. This paper discussed the manufacture process of ammonium fertilizer from wet ammonia method for control of sulfur dioxide in flue gas.

A bench-scale experimental system was conducted to study properties of activated carbon adsorption for mercury removal in flue gas. The test method used here for mercury concentration was cold-vapor atomic fluorescence spectroscopy (CVAAS). Mercury breakthrough efficiencies of activated carbon in different simulated flue gas systems were studied in typical constituent flue gas system. The conclusions are as follows: Mercury breakthrough efficiencies will become higher with adsorption temperature becoming higher; Mercury breakthrough efficiencies will become lower with C/Hg becoming higher; In order to make small dosage and cost-effective mercury adsorbents, two modified activated carbons were prepared by chemical methods including activated carbon impregnated with activated MnO2, and activated carbon impregnated with FeCl3. After analyzing the adsorbent mechanism of activated carbon and modified activated carbons, it is believed that there is chemical adsorption other than physical adsorption during the adsorption process of modified activated carbons.

A bench-scale experiment was conducted to study the chemical reaction mechanism of HCl and mercury in coal-fired flue gases on an experimental set-up. The test method used here for mercury speciation was Ontario Hydro Method. The chemical reaction mechanism of HCl and mercury in different coal-fired flue gas systems was studied in typical constituent flue gas systems. The conclusions are as follows: HCl could praise the conversion ratio of Hg(2+) to total Hg in different coal-fired flue gas systems; the higher concentration of HCl could increase the conversion ratio of Hg(2+) to total Hg. The chemical reaction mechanism of HCl and mercury in flue gases is that HCl can assist many sub-reactions.

Human error has been recognized as the major cause for industrial accidents. Because of the changing role of human in modern manufacturing environment and the lack of understanding of the human cost, the severity of human error problem is worsen by the increasing mental workload and the insufficient allocated company resources. To prevent the accidents from happening, it is necessary for managers to realize the human error threats and its likelihood of creating loss from daily operations. This paper discussed human error's conception and causes and puts forward the preventive strategy.

This paper discussed the application of virtual reality technology and its application on prevention of coal and gas outburst in coal mine. With the help of virtual reality technology, the vivid and process of coal and gas outburst in coal mine could be obtained. The application of virtual reality technology on prevention of coal and gas outburst included development such as system requirements, data preparation and organization, the configuration for virtual reality software and the custom of the client are discussed. The study and development of virtual reality technology were much important to relieve the catastrophic accident. The problems existing in prevention of coal and gas outburst was pointed out and corresponding countermeasures were put forward.

In order to examine the effect of different height of furnace side nozzle upon the distribution of flow field,particle concentration,the 3-D flow field in a new type CWS gasifier at cold state was analyzed using experimentation method,and contrasted this results with numerical simulation results.The optimization distribution was observed with the height 0.9 m far from the furnace top.Experimentation study results and numerical simulation results is very near,attest to the numerical simulation is exact,which can be seen as a gui-dance for designing and operating of this type gasifier.

Mine accident is a complex control system with multi-objectives, multi-layers and multi-factors. For the complexity of mine accident and lack of theory and experimental data, many researches are focus on these uncertainty questions, and this uncertainty is the characteristics of grey system, which is the reason why grey system theory is used here. Grey relevancy analysis is used to determine mine accident prediction, grey classification is used to obtain the most important mine hazard. The basic content and the method of its application are studied here, the prediction and analysis of mine accident is discussed with grey system theory.

Formaldehyde in indoor air is a significant health, environment and economic problem. It has become a public health issue. The major sources of formaldehyde in indoor air was determined. The health effects of formaldehyde and major control technologies are discussed. Based on these results, practices are proposed for reducing the concentrations of formaldehyde in indoor air.

A test study on effectiveness of desulfurization through coal pyrolysis of Heshan raw coal has been carried out by using a fixed bed reator system under inert atmosphere,investigating mainly the influence of pyrolysis temperature and pyrolysis time upon the variation of volatile matter and sulfer content in coal.It has been discovered from the study that:the loss of volatile matter is increasing along with the rise of pyrolysis temperature,however,the sulfer content in carbocoal is increasing at first,and then decreasing,and has a tendency to increase again;along with the pyrolysis time being lengthened,the loss of volatile matter has increased,but the sulfer content in carbocoal being increased at first,and then being decreased,and has a tendency of stabilization in variation.Only enhancing the pyrolysis temperature or lengthening the pyrolysis time is unfavourable to improve the effectiveness of desulfurization.

Coal mining processing operations are under increasing pressure to meet the demands of improved safety. This paper discusses the application of virtual reality technology in coal mine safety system. With the help of virtual reality technology, the vivid and man - machine production line of coal mine could be obtained. The application of virtual reality technology in coal mine safety system includs identifying and evaluating risks, coal mine safety technology education and real monitoring of coal mine safety are discussed. The study and development of virtual reality technology were very important to relieve the catastrophic accidents.

The raw Heshan coal was pyrolyzed in a fixed-bed reactor in oxidative atmosphere to examine the sulfur removal efficiency and the volatilization content.The effect of temperature and time on sulfur was studied.The results show that the volatilization content increased and the sulfur content in char increased at the beginning,then decreased with pyrolytic temperature becoming higher;the volatilization content increased and the sulfur content in char increased at the beginning,then decreased with pyrolytic time becoming longer.

This paper discusses the current situation and development trend of Health, Safety & Environment Management System (HSE) in enterprises. The key to implementing of HSE Management System is that an enterprise needs to take into account the basic environments requirements of the national, in combination with the environments problem, hazard and risk reality within its enterprise, so that a scientific management mechanism of self perfection and continual improvement can be established. Basic framework and main contents of HSE Management System and influence of developing HSE Management System to enterprise safety and environments protection are studied. The four procedures of implementing HSE Management System are discussed. The four procedures are making up plan, deployment, review, improvement. The general contents, main methods, experience and performances on implementation of HSE Management System are also introduced. This paper provides useful guidance for implementation of HSE Management System in enterprises.

Benzene in indoor air can be a significant health, environment and economic problem, and has become a public health issue and liability for employers and building managers who fail to provide a safe working and dwelling environment. This study is conducted to identify the major sources of benzene in indoor air. The. health effects of benzene and its major control technologies are discussed. Based on these results, practices are proposed for reducing the concentrations of benzene in indoor air.

Two modified bentonites were prepared by chemical methods including impregnated with MnO2 and impregnated with FeCl3.A bench-scale testing apparatus was constructed to evaluate the efficiency of mercury adsorbents with fixed bed.The reactive MnO2-impregnated adsorbent was selected out.After analyzing the adsorbent mechanism of modified bentonite,it is believed that there is chemical adsorption other than physical adsorption during the adsorption process of modified bentonite.

In order to make small dosage and cost-effective mercury adsorbents for coal-burning flue gas,a series of modified zeolites were prepared by various chemical methods,such as impregnated with MnO2,impregnated with FeCl3 and impregnated with sulfur at different temperatures.A bench-scale testing apparatus was constructed to evaluate the efficiency of mercury adsorbents with fixed bed.The zeolite impregnated with MnO2 was selected out as one kind of effective and low-cost adsorbent.Compared with the zeolite before modification,adsorption capability of modified zeolite was greatly increased;effective adsorption time of them was much longer;its penetration ratio was much lower.The analysis of the adsorbent mechanism of modified zeolite shows that there is chemical adsorption other than physical adsorption during the adsorption process of modified zeolite.

It is needed that coal-fired boilers install flue gas desulfurization equipment, because National Environment Protection Agency of China controls. sulfur dioxide emissions from coal-fired boilers. Ammonia process removing SO2 from flue gas possesses many remarkable technical advantages: desulfurization efficiency; simultaneousl removing of SO2 and NOx, no heat consumption and no waste residues, fewer use of desulfurizer and the higher utilization ratio, no equipment damage and the saving of power. The ammonia fertilizer method for flue gas desulfurization (FGD) is ture to Chinese present situation. This paper discusses the application of a new wet ammonia method for the control of sulfur dioxide, its advantages, process, mechanism and economics.

The mixture of raw Heshan coal and poplar powder was pyrolyzed together in a fixed-bed reactor in air atmosphere to examine the sulfur removal efficiency and the volatilization content.The effect of temperature and time on the sulfur removal efficiency and the volatilization content of the mixture of raw Heshan coal and poplar powder were studied.The results show that the volatilization content increased and the sulfur content in char increased at the beginning,then decreased with pyrolytic temperature becoming higher;the volatilization content increased and the sulfur content in char decreased at the beginning,then increased and decreased with pyrolytic time becoming longer.

This paper discusses the safety of coal mine and researches man-machine-environment system engineering theory and methodology. The causes and countermeasures of human error were put forward. The relationship between casualty accidents and workers' quality, psychological factors and fatigue was analyzed. The accident in coal mine was analyzed by the use of FTA. At the same time, the countermeasures to improve environmental condition were put forward. The problems existing in coal mine was pointed out and corresponding countermeasures were put forward.

An experimental set-up was built, on which a bench-scale experimental was conducted to study the affecting factors of mercury oxidation such as HCl concentration, SO(2) concentration, temperature at reactor's exit and Hg concentration on mercury oxidation in simulated coal-fired flue gases. The test method used here for mercury speciation was Ontario Hydro Method. The affecting factors of mercury oxidation in different coal-fired flue gas systems was studied in typical constituent flue gas systems. The conclusions were as follows: HCl was the key substance that reacted with Hg vapor in coal-fired flue gas. In the coal-fired flue gas systems containing HCl, HCl could enhance oxidation of Hg vapor; SO(2) could decrease the conversion ratio of Hg(2+) to total Hg; The higher temperature at reactor's exit could increase the conversion ratio of Hg(2+) to total Hg, the conversion ratio of Hg(2+) to total Hg would become higher at elevated temperature;The conversion ratio of Hg(2+) to total Hg decreased with higher Hg concentration.

Fire is a complex control system with multi-objectives, multi-layers and multi-factors. For the complexity of fire accident and lack of theory and experimental data, many researches are focus on these uncertainty questions, and this uncertainty is the characteristics of grey system, which is the reason why grey system theory is used here. Grey relevancy analysis is used to determine fire prediction, grey classification is used to obtain the most important fire hazard. The basic content and the method of its application studied, the prediction and analysis of fire is discussed with grey system theory.