Bisogno, engineering head coke oven battery, paul wurth italia s. Carbonization of coal for metallurgical coke production. Before carbonization, the selected coals from specific mines. Industry profile draft report prepared for daniel c.
Depending on the customers needs and requests, we provide the tailormade design and stateoftheart technologies for coke oven batteries of top charging as well as of stamp charging type. Most of the byproduct coke oven batteries are integrated in an iron and steel plant for the purpose of coke oven gas. The cokin chamber is generally from 30 to 42,6 f8et it\. Fugitive coke oven gas emission profile by continuous line. Each battery consists of at least 80 100 coke ovens. Apr 06, 2016 advanced technologies for desulphurisation of coke oven gas 6 april 2016 6 april 2016 robertopensa paper presented on icc 2009, 2022 january 2009, ranchi, india. Concept and operating results of a higherlevel automation. At present, all those batteries are back in operation. The heating of ovens is done from both the sides in side fired batteries. Coke is the carbon product that is formed by the thermal distillation of coal at high temperatures in the absence of air in coke oven batteries.
Operation and preservation of coke ovens in the current economic. A highquality coal does not generate high pressure on the coke oven, and they also shrink enough so that they are easily removed from the coke oven. The coking oven battery is heated by vertical heating walls which can consist. Coke oven gases cogs are emitted during the cokemaking process through handling, charging, oven leaks, pushing, quenching, combustion, and foul gaspurifying steps figure 1. In modern advanced control system of coke oven, the control scheme of feedback combined with feedforward, and control merged with management are widely utilized. Through the website i share my knowledge and experience gained through my association with the steel industry for over 54 years. The beehive coke oven design emanated from the charcoal kiln process practiced earlier. Approximately 950011,500 ft3 of coke oven gas is released1,2 from a ton of coal during the cokemaking process.
The residual coke is pushed out of the oven by pusher car through a guide into coke bucket. The redhot coke is taken to coke dry cooling plant for cooling. Jan 17, 2019 the coking process generates the following main volatiles as byproducts. Important questions arise here regarding the thermal and technological conditions in superlong coke oven. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern. Special coke plant specific measuring and evaluation systems are assisting the optimization models. From coking coal to coke perspectives for met coke production in european union. Tkisaist2015paperusing modern coke oven technology at. The operation of each oven is cyclic, but the battery contains a sufficiently large number of ovens to produce an essentially continuous flow of raw coke oven gas. Suncoke energy our business coke business advanced. Advanced technologies for desulphurisation of coke oven gas. Coal chemical plant recovers ammonia nh 3, tar and benzol from cogas. Nov 15, 2014 the coke making process in these coke oven batteries is called byproduct coke making since the off gas is collected and sent to the byproduct plant where various byproducts are recovered.
China experience october 2017 stockcode 1618 hong kong 601618 shanghai confidential and proprietary any use of this material without specific permission of mcc is strictly prohibited. Coke oven battery 5 p rimary coolers warm sump flushing liquor tank flushing liquor heavy residual steam exhauster tar separator final coolers boiler benzol clean gas back to coke ovens battery 5 scrubbers flair ammonia scrubbers clean ga to pta crude benzol plant 4. Pdf coke ovens play a vital role in steelmaking as worldwide steel. Environmental control and emission reduction for coking plants. Ep0089862a1 coke oven battery and process for repairing. Fulfilled environmental specifications by a comprehensive coke. Coke oven batteries cokemaking our activities site. Coke oven intelligent integrated control system semantic. Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of aira destructive distillation process. This process avoids melting the battery brick work the flame temperature is above the melting point of the brick and provides more uniform heating of the coal mass.
Pdf coke oven intelligent integrated control system. The actual chemical content of the emissions depends on the process variables. In modern advanced control system of coke oven, the. The hyundai steel coke oven batteries are using the combiflame heating system which consists of special heating flues, equipped. The walls 33 of sidewalls 9 also forming the walls of the furnace cells exhibit, close to at least one of their adjacent ends to the front and rear openings of the cells of ovens, a vertical joint plane 39 established along a vertical alignment of one of the lateral faces of the bonders 36, the two contiguous stretchers upper and lower beds to those contennant these headers being one. More detailed process descriptions are provided in appendix d. This volatile matter leaves the coke oven chambers as hot, raw coke oven gas. The entire cokemaking operation is comprised of the following steps. For the production of this material, the coke oven is filled with coal through the filler holes in the oven roof. The majority of coke produced in the united states comes from wetcharge, byproduct coke oven batteries figure 1. From coking coal to coke perspectives for met coke. Ep0089862a1 coke oven battery and process for repairing old. Hence, this process is called byproduct coke making. Environmental protection agency innovative strategies and economics group md15 office of air quality planning and standards oaqps air quality standards and strategies division research triangle park, nc 27711 prepared by research triangle institute.
The processing of the coal is then carried out in the absence of air at temperatures of up to 0 c. Beehive process is a self heating process where the volatile matter is burnt over the coal charge under restricted and directed air supply, and the radiant heat bounces back to the charge from its arch shaped roofs. A brief description of each coking process is presented here. Coke oven gas processing equipment zvu engineering. Higher capacity of the coke oven chamber is an important parameter for byproduct recovery type ovens. The main byproduct in the process of coke making is crude coke oven gas and this has a lot of valuable chemicals. Coke oven is key thermal equipment and consumes energy massively in the metallurgy industry. Coke ovens free download as powerpoint presentation. A single coke oven consists of a coking chalnber clnd a heating chamber. A scheme of the total process of conventional coking is shown on fig. Oct 04, 2015 the coal gas generated on heating the cake in oven is collected by a vertical hooper and sent to by product plant for its use. The practical running results indicate that the system can achieve intelligent control of coke oven heating process, satisfy the actual production need, and has great practical value.
A typical heatrecovery facility that we design and operate to produce 1. The coke oven chimney is made of concrete lined with fireclay bricks. The chamber is 20mm tapered from ps to the cs of the battery. In the process of converting coal into coke using the byproduct coke oven, the volatile matter in the coal is vaporized and driven off. Normal life of a coke oven battery under indian condition is considered to be 25 years. Esposito, head of business unit coke, paul wurth italia s.
Operation of cuttingedge coke oven having all of durability. Coke is used in the blast furnace to provide a reducing atmosphere and is also a source of fuel. The different ovens are disposed side by side and charged and discharged on a cyclical regular basis, in a continuous way, being the gaseous products subproducts taken off in a. Oct 04, 2018 coke makers use a mix of coal to improve the quality of coke they create. The coke oven byproduct plant is an integral part of the byproduct cokemaking process. Coke oven batteries normally, a coke battery comprises a large number of ovens, typically a set from 60 to 90 per battery, grouped in sections of 15 to 20. Therefore, how to save energy, promote production and quality of coke are key problems of coke oven control and management.
The practical running results indicate that the system can achieve heating intelligent control of coke oven, stabilize production of coke oven, effectively improve quality of coke and decrease. Heavy residual separator clean coke oven gas distribution battery heating. Suncoke energys heatrecovery cokemaking process converts waste heat into steam and electricity, which we can sell to our customers. Heating chamber the heating flues of coke oven batteries are divided into 14 pairs of vertical flues. Oct 18, 2015 coke ovens are mainly constructed of silica, fireclay, high alumina and ordinary insulating bricks. Santanu chakraborty, in treatise on process metallurgy. Process data from the field, calculated data processed by the plcs as well as important data from the models and as. In the field of top charging batteries, paul wurth favours the jumbo oven battery concept with substantial ecological advantages and a long battery lifetime. The rear portion of the battery of coke ovens comprising a coke guide 17 longitudinally movable on rails 17 1 so as to stand in front of the rear opening 8 1 of the oven chamber 8 to defourner, and a coke car 18, longitudinally movable drums 18 on rails 1 so that during the discharge of coke ovens of a cell 8 by the ram 15 2, the coke cake is. Pdf extension of life of coke oven batteries by hot full wall.
May 10, 2015 this feature is not available right now. The coke generated after heating has a high heating calorific value and is used for burning purposes in blast furnace. Pdf combustion control system for coke ovens embedded with. The gas flows to the coke oven battery are conducted in the direction of battery length, oven length and oven height, which require an adaptable distribution of media. Scribd is the worlds largest social reading and publishing site.
The properties of coke are influenced by moisture content and density. The ovens are arranged side by side and charged and discharged on a cyclical basis, in a continual process, with gaseous products being taken off in a controlled manner to a gas handling plant. In the battery, the coking chambers are alternated with the heating chambers 3. The oven has just been pushed and railroad car is full of incandescent coke that will now be taken to the quench station. As larger amount of coal is held in an oven, it significantly reduces the number of pushings per day and hence emissions per ton of coke produced. At the roof of each oven there are 3 oven holes which are closed with refractory lined lids and another opening which is connected to the gcm via stand pipe. In order to improve the level of management and control of coke oven, the research on intelligent integrated control system is carried out.
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