The technology of coke oven pressure regulation is the new technology for environmental protection which has been adopted in large coke ovens.Development background for CPS and PROven of technologies of coke oven pressure regulation applied in coke oven projects of China is introduced in this paper.Meanwhile based on analysis and comparing of working principle and technical philosophy of the technologies,the paper evaluates their function effect and applicability and raises the point of view that CPS technology is the technology more applicable for Chinese situation.

This paper introduces PSA process and its technical problems.By the process,the content of carbon is extracted from LDG and BFG.The process improves productivity of existing device for methanol synthesis from COG to make full use of energy sources and increase added value of products.

This paper introduces the priciple of waste heat recovery technology of HYWHR type coking waste gas,features of its equipment structure as well as running effect,and summarizes advantages and reliabilities of the process in energy conservation and emission reduction.

The caking index is an important parameter to evaluate caking and coking property of coal.Through analyzing factors such as coal property and methods of sampling,preparation and testing,this paper manages to regulate testing process and ensure data accuracy.

Influencing factors of coke collapse in oven end on coke side for 7.63m coke oven have been found in some aspects such as the index of charging coal,the temperature of coke oven,the running of PROven system as well as the production of coke oven.Countermeasures are taken so as to release the serious problem and the number of ovens as well as amount of collapsing coke is substantially reduced,which also cut down on manpower.

This paper studies drying properties of coking coal and index of coal quality under the influence of microwave drying technology.The dehydration rate of coking coal sample can be increased by microwave，namely，bigger rate of microwave has faster drying，while the influence of the microwave power on caking of coking coal is decreased，bigger power and less influence.The microwave dewatering technology can be used in drying coking coal，which can save report time.

For the problems in CDQ running,this paper analyses main influencing factors,meanwhile,some improved measures are proposed.After improvement,the CDQ system of stamp-charging coke oven has been running stably,which dry quenching rate has reached 93.49%.

The position of pusher rod where maximum stress can be sustained is found out by stress analysis during the process of coke pushing so that the maximum pushing force of pusher rod is calculated and intensity also can be checked.Design proposal of structural optimization is proposed according to the analysis on shape of cross setion of pusher rod.Simulated forced analysis of pusher rod is done after optimization.

The application of energy saving charging hole lid on coke oven battery in replacement of traditional charging hole lid is introduced. The energy saving charging hole lid can reduce the temperature on the surface of charging hole lid and the radiation temperature on the top of coke oven,which improves the operation condition on the oven top and realizes the target of energy saving and consumption reduction.

Working principle of oven door maintenance vehicle and kinds of problems occurred during its using are introduced.This paper analyses and solves a series of technical difficulties such as the mode of power supplying,safety and stability of travelling and lifting mechanisms,which improves the safety,neatness and efficiency of operation of coke oven.

Application of net coking management for 7m coke oven is discussed.Compared with conventional heating system which simply depends on experienced data，net coking management，as a heating assistant can not only save energy consumption of coke oven，but also as early as possible discover and prevent from accidents，stabilizing the temperature of coke oven and realizing long life.

Basic principle and process of PDCA cycle is introduced and its application in coke & by-products production is expatiated.Analysis of factors influencing coke’s CSR during production is made by PDCA cycle.By main reason confirmation and corrective measures implementation,the index of CSR is improved.

This paper introduces the changover process from BFG heating to COG heating for some combustion chambers when oven walls of the chambers are repairing.Partial changeover can ensure the temperature of coke oven stable and even so as to improve the operation’s efficiency and safe.

This paper studies the changes of QI and TI of coal tar pitch from different origins during thermal conversion under specified pressure and temperature, based on which reasonable process parameters can be finalized to produce high quality needle coke.

The principle,process and devices of ammonia flue gas desulphurization is introduced.The problems existed are analyzed and corresponding measures are taken,which makes the operation of desulphurization stabilize and tail gas reach GB Standard.

In order to make full use of tail gas, methanol is synthesized from tail gas after modification, which improves the conversion efficiency of COG and economic benefit.

This paper discussed properties of refined asphalt and influence of delayed coking process on needle coke.The result shows that high qulaity needle coke is produced under conditions of delayed coking with 450℃,0.5MPa and more than 20 hours.

The principle of WSA process is narrated and determination methods of air consumption are discussed.Theoretical bases are provided for controlling air consumption.Attentions to be paid in design is proposed according to WSA unit of Zhanjiang Iron & Steel Company.

During treatment of coking waste water,there are a lot of problems such as too much waste water needs to be treated.After improvement of technology,optimizing of process,sorting of waste water,handling by classification,the amount of waste water decreases by 25t/h.Solvent extraction dephenolization system has been shut down,which is based on the qualified water after treatment,so as to improve the quality of ammonia liquor and reduce the cost of waste water treatment.

In order to tackle with the problem of long-term over-load of gas exhausters,the capacity of gas exhauster was expanded to eliminate potential danger and ensure auto adjustment of the pressure of gas collecting mains.

This paper introduces the efficient and energy-saving technique of surplus ammonia waterdistillation.The application of process and equipment optimization and utilization of absorption heat pumps improve concentration of ammonia water product and reduce total ammonia content in waste water.

The reason for the formation of blockage is analyzed based on the inspection of the crude benzolscrubber and test of greasy stain,and corresponding measures are taken.The method of cleaning with chemical agents is effective.The resistance of the crude benzol scrubber is reduced by 2 500Pa,and the recovery rate of crude benzol is increased by 0.15%.