The advantage of large capacity technology of stamping coke oven was analyzed, the main forms of stamping, charging and pushing machines were introduced. The necessity of localized stamping, charging and pushing machines for 6.25m stamping coke oven was described, by comparison of the process configuration and investment situation with the introduced technology, specific suggestion on large capacity technology of stamping coke oven and localized SCP machines.    

 A low cost desulphurization technology for cokemaking coal with high sulfur is developed. The study reveals that after the cokemaking coal with grain size from 0.45mm to 0.6mm and high sulfur is impregnated with 2mol/L NaOH solution and irradiated with 700W microwave for one minute, the desulphurization rate can be up to 42.5%, while its coking property has no effect. The technology is used as a practical technology and has a good application prospect.

The correlations between the factors of stability and moisture of blended coal, coal grain size composition and stamping frequency etc. of coal cake in the stamping cokemaking process are studied. The comprehensive analysis indicates that the coal cake stability expressed with the indexes of compressive strength and shear strength is more accurate. When the moisture of blended coal is controlled in the range from 9% to 11%, stamping frequency is about 5 and the fineness of blended coal is about 90%, the stamping cokemaking production  is more suitable. At this time the stability of coal cake is better.

The investigation and study situation and laboratory study situation of coal preparation technology of winnowing and CMC both at home and abroad were introduced. The study showed that coal preparation process of winnowing and CMC can increase coke strength and coke uniform factor, improve the uniform degree of ash in coal blend, improve coke quality, this technology has the potential energy of environmental protection, energy- saving, coke oven service life extension and also can lower the cost.        

Taking the multi-drive transmission system for high capacity coke oven machine as the study object, against the big current difference issue of multi-drive motor caused by non-uniform load, by application of asynchronous motor vector control technology and load balance control principle, the load balance control model of multi-drive transmission system for coke oven machine was established. The model is applied in production practice, which enables that the control system is characterized by good balance ability, fast response speed and higher stability, and better to meet the control requirement of drive system.

By selecting dry ash-free volatile matter（Vdaf）, maximum plastic zone thickness （Y） and height and width ratio of coking chamber （L/B）as independent variables, the production data of 4 different type coke ovens are analyzed through the clone selection algorithm based on gene expression, and the predictive model for coke quality is established. In comparison with the predictive models obtained with the method and regression analysis method, the error of the coke quality predictive model obtained by the method is far less than that obtained by regression analysis method, the model can meet the actual production requirement better and provides the theoretical base for getting coal blending ratio quickly and accurately for coking plant.

The running situation of CDQ system was summarized in all-around way, including production situation, main technical and economic indexes, coke quality improvement situation, metallurgical coke yield, coke breeze rate, coke fine variation, consumption of various kinds of public utilities, maintenance, depreciation, labor expense and income, etc. The energy-saving effect, direct economic effect, extended effect and environmental protection effect of CDQ process under different situations were analyzed.     

The influence of high pressure ammonia liquor on the emissions transmission result in the production of stamping coke oven is disserted. According to the principle of hydromechanics, the effects and laws of the factors, such as structure, installation position, diameter, pressure etc. to the emissions transmission performance of high pressure ammonia liquor spraying nozzle are discussed. In accordance with the various kinds of influencing factors, the corresponding optimization countermeasures are put forward so as to provide the theoretic basis for perfecting further the design of emissions transmission process.

The chemical precipitation process was used to treat high concentration NH3-N in wastewater, the influence of the factors such as chemicals blendinig ratio and pH value on NH3-N was studied. Under suitable conditions, the pure and clean MAP crystal can be obtained, the removal rate for NH3-N can be reached to 98%. At the temperature of 100℃, heated for 3 hours and MAP was decomposed, the composed substance can be used for the removal of NH3-N in wastewater in repeat, the removal rate of NH3-N can be reached to 93%, the cost of chemicals can be substantially reduced and NH3 in waste water can be recovered.          

Abstract: The purpose, principle, process flow and precautions of BASF catalyst sulfuration are described in combination with the catalyst sulfuration experience on Wu-steel 1×105t/a crude benzol hydrorefing project. Through sulfuration, BASF catalyst can improve the catalyzing reactivity and prolong the operation cycle of the plant so as to raise economic benefit.

Flushing liquor contains several kinds of corrosive mediums, such as H2S and so on. They are not main cause of the leakage of flushing liquor pipeline. The combination effect of the various kinds of residual stress and medium corrosion generated of flushing liquor pipeline causes the stress rupture of the pipeline. The stress corrosion by H2S etc. and hydrogen damage are the major cause of flushing liquor pipeline leakage. The welding defect generated or the microcracks developed by stress corrosion on the inner wall of the flushing liquor pipeline can cause the joint corrosion of flushing liquor pipeline. Therefore the use of A302 stainless steel transitional welding rod to ensure welding quality and the effective elimination of various kinds of residual stresses can avoid the leakage of flushing liquor pipeline.

The data of vapor-liquid phase equilibrium of benzene and N-formyl-morpholine are determined actually at atmospheric pressure. The data are related with the utilization of Wilson equation and NRTL equation. The result shows that the binary system of benzene and N-formyl-morpholine has a good relationship. The thermodynamic agreement examination is also conducted for the vapor-liquid phase equilibrium data and the result is rational.