This paper introduces the excepted working life of CDQ under existing condition and a series of techniques for its life prolongation.Application of the techniques can get away from frequently maintenance or shutdown so that the environment\|friendly CDQ system are featured with economic benefits.

This paper introduces main influencing factors,improvement measures and practical application of amounts of charging coal in single oven for 7.63m coke oven.Enhancing volume and density can increase amounts of charging coal with 1.25t for single oven,which is equal to 105400 tons per year in addition for the single oven.It also can be reduced pollutant emission.

The influence of CDQ chamber level，gas coke ratio，circulating air flow and material stay time to the average grain size of coke before and after change of CDQ operation mode was studied.Countermeasures were taken to optimize the production.After optimization，the coke grain size was stable and improved，and gas yield was increased，while power consumption was reduced.

The development trend and problems of large centralized de-dusting system are introduced.It is proposed that constant pressure value can be used to control the designed flow.The constant pressure can be controlled with the help of pressure sensors and valve positioning actuator.The test run air flow can be adjusted by programmable control.Therefore,the system resistance can be balanced during start-up,commissioning and operation,and consequently the de-dusting effect is satisfying.

This paper analyses advantages and disadvantages of disc type and cock type of heating exchange from aspects such as process,device,operation and economy in order to design a scientific heating exchange system with mixed gas,which provides a reference for consumers and designers.

Data processing module of coke cake center temperature measured by infrared radiation thermometer is devised and developed based on coke oven heating management and measuring standard of coke cake center,which provides a reference for the industry.

This paper analyses reasons for uneven compressing of expansion joint on CDQ boiler and cracks on H steel of economizer.Solutions are provided for relevant enterprises’reference from aspects of equipment, construction and running.

This paper introduces the application of oven door service lift in production of JNX70-2 coke oven and describes its working principle and structural features.Using of the lift resolves difficulties like online maintenance both on pusher and coke side and seal of oven door.It improves efficiency of maintenance and reduces intensity of labor.

The operation of CDQ is optimized and thermal efficiency is improved to maximize steam production rate per ton of coke by adjusting amounts of air,reducing heat loss and optimizing the ratio of air and coke,according to existing conditions of CDQ device in Linhuan Coking Plant.

This paper analyses the reason why temperatures of T3 & T4 on the same section are uneven in CDQ chamber and provides with corresponding handling measures for reference for solving similar problems.After the measures is adopted, the operation of CDQ become stable.

This paper introduces a method of determining revolutions of coal leveling and a standardized procedure for coordination between machinery. After application of a new technique in the production of coke oven,systems work stably to increase quality and yield of cokes,prolong working lives of equipment and ensure that the production runs smoothly and well.

This paper introduces control method of pushing rod motion and its maintenance experience combining practical cases,which provides a valuable reference for realizing safe and stable running of coke oven and improving automation level of its movable machines.

The automatic coal blending system with integrated storage and blending is introduced.The whole system is monitored and controlled by computer.Individual coals are blended in specified proportion accurately，so that the system runs stably and the blending accuracy is higher than 95%.Factors influencing the blending accuracy are analyzed，based on which necessary improvement measures are proposed.

Common faults of coke guide grid is analyzed based on practical applications.The grid is optimized from stages of design,installation and maintenance.Solutions are provided to decrease the fault and lower the rate of failure.

In this paper,the current situation of the pollution from coke side oven end emission of 6m top-charge battery is introduced together with its control measures; technical descriptions are also given,such as the new suction hood configuration and structure,emission volume and dedusting station parameters.

Combining project cases of coke oven flue gas purification,this paper compares two de-NOx processes,namely,direct de-NOx and de-NOx after semi-dry desulfurization.Both have their advan-tages and disadvantages,so carefully select them according to actual conditions of flue gas.

Solid base was used as catalyst for synthesizing 9-fluorene methanol by “one step method”.The effect of main factors to the yield of product was studied.The mixture solvent of toluene and cyclohexane can improve the purity of the product to 95% and higher,and the yield of the product to 40% and higher.

Four catalystsare selected to prepare O-Phenylphenol (OPP) by dibenzofuran hydrogenation.The optimium temperature,pressure and air speed are determined for hydrogenation reaction,and the optimal catalyst is determined.The optimium conditions for dibenzofuran hydrogenation are:center reaction temperature 430℃,reaction pressure 2.0MPa,mass air speed 0.05h-1.GC is adopted for qualitative and quantitative analysis of the products.Recovery rate of OPP is 60.03%,and BP is 34.27%.The conversion rate of DBF is up to 97.76%.

The renovation and running of the ignition control system of crude benzol tube furnace is introduced. The ignition control system of the tube furnace has the function of ignition automatic control， realtime measurement of flame and flameout protection. It has the advantages of high automation level， good safety performance and stable running.

This paper introduces a testing method for determination of industrial acenaphthene content by gas chromatography.The method has many strong points such as easy operation, rapid analysis,wide range,good repetition and high accuracy.

The features of rubber membrane sealed gas holder are introduced.The gas holders with capacity of 50 000m3 of wet type，thin oil sealed type and rubber membrane sealed type are compared.The rubber membrane sealed gas holder has the advantages of suitable structure，low power consumption and easy management，so it has broad application prospect in coking industry.

The formation of foam during aerobic period in the biological treatment process of coking wastewater can be controlled by improving the quality of inlet water，stabilization of temperature in aerobic tank at 30~32℃，keeping the concentration of dissolved oxygen between 3mg/L and 4mg/L，and increasing properly the proportion of returned sludge.

Measures to reduce power consumption are proposed based on the analysis of high back pressure heating technology.Feasibility and reliability study on the technologies of air cooling turbine，wet cooling and high back pressure heating are carried out.Key points to be paid attention to are pointed out.The study showed that high back pressure heating unit with air cooling turbine is more preferable.

The tar,crude benzene and residual ammonia produced in the coking process need to be stored in a large tank to send the subsequent device processing device.In this paper,the research and application of the waste gas composition and collection method of the storage tank can effectively improve the VOC govern level of the coking industry.

This paper clarifies design essentials and basis of foam extinguishing and water cooling system of oil depot tankers in coking plant by analysis of the relevant provisions of Code for fire protection design of buildings GB 50016—2014,Technical code for fire protection water supply and hydrant systems GB 50974—2014,Fire prevention code of petrochemical enterprise design GB 50160—2008,Technical code for water spray fire protection systems GB 50219—2014,Code for design of foam extinguishing systems GB 50151—2010 and Code for design of automatic fire alarm system GB50116—2013.