297results about "Coke ovens" patented technology

A coke product configured to be used in foundry cupolas to melt iron and produce cast iron products is disclosed herein. In some embodiments, the coke product has a Coke Reactivity Index (CRI) of at least 30% and an ash fusion temperature (A FT) less than 1316° C. Additionally or alternatively, the coke product can comprise a fixed carbon content of at least 80% and / or a volatile matter content of no more than 1.0%.

The utility model relates to a system for reducing carbon dioxide emission in a coking production process. The system comprises a coke oven heating system, a flue gas desulfurization and denitrification system, a CO2 absorption and analysis system, a methanol synthesis system, a wind power / photovoltaic power generation system, an energy storage system, a water electrolysis hydrogen production system, a hydrogen storage system and a methanol storage system. According to the device, the emission of coke oven flue gas CO2 to the atmosphere can be effectively reduced, the CO2 in the coke oven flue gas can be captured and converted into a green methanol fuel, and the CO2 generated by combustion is not discharged when the green methanol fuel is used as a heating fuel of a coke oven, so that the cyclic utilization and green development of the CO2 are realized.

The invention relates to the technical field of waste plastic treatment, in particular to a waste plastic grading carbonization device and a waste plastic treatment method. The waste plastic grading carbonization device comprises a feeding hopper, a crushing device, a grinding device, a screening device, a catalyst self-adaptive proportioning device, a first spiral discharging machine, a first-stage carbonization chamber, a second-stage carbonization chamber, an activation chamber, a second spiral discharging machine, a solid product collecting device, a liquefaction device, a liquefied product collecting device, a cooling water circulating device and a third spiral discharging machine, a material returning bin and a tail gas treatment device. According to the invention, through the collaborative innovation of'grading carbonization 'and'catalyst self-adaptive proportioning device', the problems of incomplete and non-uniform carbonization of the waste plastics, inadequate utilization of gas products and the like in the pyrolysis process of the waste plastics are solved, and an industrial feasible path is provided for chemical recovery of the waste plastics; the device is reasonable in overall structural design and high in treatment energy efficiency, and continuous, sufficient and efficient pyrolysis and high-value conversion of the waste plastics are achieved.

The invention discloses a biomass coke-based multifunctional coal pyrolysis catalyst and a preparation method thereof, and belongs to the technical field of preparation of coal pyrolysis catalysts. The preparation method comprises the steps of raw material pretreatment, pyrolysis pore-forming, activation synergism, metal loading, citric acid staged removal and atmosphere replacement, and specifically comprises the following steps: firstly, compounding, crushing and drying straw and wood biomass, and performing pyrolysis in an inert atmosphere to prepare a biomass coke precursor; then carrying out alkali metal activation, acid pickling and water washing to prepare an activated carrier with a high specific surface area; then, citric acid is used for assisting in loading a mixed solution of nickel nitrate and ferric nitrate, citric acid is removed by stages through air low-temperature pre-removal and inert gas medium-temperature deep removal, and the valence state of the metal active component is synchronously regulated and controlled. The prepared catalyst is low in citric acid residual quantity, can realize hydrodeoxygenation, tar cracking and anti-carbon deposition functions, is excellent in catalytic performance and low in cost, meets the requirements of low metamorphic coal pyrolysis volatile component upgrading, and is easy to industrially apply.

The utility model provides a coke oven blowing-out system and relates to the technical field of coke ovens. The device comprises a plurality of carbonization chambers, a gas collecting pipe is communicated with the carbonization chambers, a purging pipe and a diffusing pipe are communicated on the gas collecting pipe, a gas source pipe is communicated with the purging pipe, the diffusing pipe is communicated with an exhaust pipe, and the exhaust pipe is sequentially provided with a heat exchange unit, a filter unit, a combustion unit, a purification unit and a discharge unit. When the coke oven is shut down, gas blown out of the coke oven is discharged after being treated, so that environmental pollution is avoided.

This invention discloses a coking method for synergistically improving the mechanical strength of coke using multiple components, relating to the field of coke smelting technology. The key technical points are: In a basic coal blend composed of gas coal, coking coal, and lean coal, 0.5%-10% organic binder and 0.5%-10% solid filler are added by mass percentage, along with 0.5-10 mL of liquid organic solvent per 100g of coal. After mixing and molding, the mixture undergoes carbonization. An optimal blend ratio is selected, and under the optimal combination, the mechanical strength of the coke can reach over 88%. This invention proposes a ternary synergistic modification system that significantly improves the mechanical strength and structural uniformity of coke without significantly altering existing processes. It has the advantages of low cost and ease of implementation, and is suitable for the industrial production of coke for blast furnaces.

The utility model discloses an anti-sticking coal cake tamping hammer, and relates to the technical field of coal cake tamping hammers, the anti-sticking coal cake tamping hammer comprises a hammer rod and a hammer head arranged at the lower end of the hammer rod, a limiting seat is arranged outside the hammer rod, a fixing frame is arranged on the outer surface of the limiting seat, a telescopic rod is arranged at the lower end of the fixing frame, and the telescopic rod is connected with the limiting seat. A knocking rod is rotatably connected to the front surface of the lower end of the telescopic rod, a knocking head is arranged on the outer surface of the lower end of the knocking rod, a shaft seat is arranged on the outer surface of the right side of the hammer rod, a tooth block is rotatably connected to the inner surface of the shaft seat, and a transmission mechanism is arranged on the surface of the knocking rod; the transmission mechanism comprises an abutting wheel fixedly connected to the outer surface of the left side of the knocking rod. Compared with an existing common coal cake tamping hammer, the anti-sticking coal cake tamping hammer has the advantages that the hammer rod and the hammer head can move up and down along with an external power device in the working process, in the hammering process, the hammer rod can be used for driving knocking through lifting of the hammer rod, and coal is effectively prevented from sticking to the surface of the hammer head.

The application discloses a carbonization box body, which comprises a main box body, an inner box body arranged in the main box body, a left end plate, a right door frame and a door body.

The invention discloses a coking device for lignite blending, and relates to the technical field of coal coking, the coking device comprises a coking furnace, the top of the coking furnace is fixedly provided with a box body, the two sides of the box body are both provided with storage boxes, the bottoms of the storage boxes are fixedly provided with hollow cylinders, and the sides, away from each other, of the two hollow cylinders are both fixedly provided with first servo motors; output shafts of the first servo motors penetrate through one side of the hollow cylinder and are fixedly provided with first augers; the two independent first servo motors are used for driving the augers at the bottom of the storage box respectively, the conveying amount of lignite and other coal types can be accurately controlled by adjusting the rotating speed of the motors, the deviation of the coal blending proportion is greatly reduced, it is ensured that the mixed coal meets the preset formula requirement all the time, and the coal blending efficiency is improved. Coke quality fluctuation caused by proportion imbalance is reduced from the source, stable performance of subsequent coking products is guaranteed, and the coal crushing and mixing effect is improved.

The claimed invention is directed to a catalytic graphitization process to convert fuel-grade petroleum coke into battery-grade graphite using a recyclable catalyst derived from iron, nickel or cobalt.

The claimed invention is directed to a catalytic graphitization process to convert fuel-grade petroleum coke into battery-grade graphite using a recyclable catalyst derived from iron, nickel or cobalt.

The present invention provides a method for producing coke that exhibits minimal variation in strength between production lots. [Solution] The manufacturing method comprises a preparation step (S10), a loading step (S20), a cutting step (S30), a monitoring step (S40), and a coke manufacturing step (S50). In the preparation step (S10), raw coal is prepared. In the loading step (S20), raw coal is loaded into a coal bin (11). In the cutting step (S30), raw coal in the coal bin (11) is cut from the bottom end of the coal bin (11) to the charging car (30). In the monitoring step (S40), the amount of raw coal remaining in the coal bin (11) is monitored. In the coke manufacturing step (S50), the raw coal on the charging car (30) is charged into a carbonization chamber (41), and the raw coal in the carbonization chamber (41) is carbonized to produce coke. Then, in the input process (S20), raw coal is fed into the coal bin (11) so that the inventory level monitored in the monitoring process (S40) is maintained at or above a predetermined level.

This invention discloses a blended coal and coke, and a preparation method, using Canadian coking coal with a plasticity range <60℃, belonging to the field of coal blending and coking technology. It comprises 20%–24% gas coal, 4%–8% gas-rich coal, 3%–7% 1 / 3 coking coal, 9%–16% fat coal, and 25%–62% coking coal. The coking coal includes 5%–15% Canadian coking coal. The Canadian coking coal has a Kiel's flowability plasticity range of 50℃–55℃, a flowability MF of 11–37 PPM, a caking index G of 76–80, and a maximum plastic layer thickness Y of 14–18 mm. This invention replaces a portion of the coking coal with Russian fat coal in coal blending and coking, increasing its blending ratio and expanding the application range of coking coal, thus optimizing the utilization of imported coking coal resources.

This invention provides a method for evaluating the compatibility of different coals, enabling simple and highly accurate prediction of coke strength. [Solution] A method for evaluating the compatibility between two or more types of coal when two or more types of coal are blended, comprising: obtaining the solubility parameter of each of the two or more types of coal; calculating the centroid of the solubility parameter; and evaluating the compatibility based on the difference between the centroid and the solubility parameter.

Methods of separating products from the catalytic fast pyrolysis of biomass are described. In a preferred method, a portion of the products from a pyrolysis reactor are recovered and separated using a quench system and solvent contacting system that employs materials produced in the pyrolysis process.

A system and method for sequestration and reduction of carbon dioxide (CO2) to a carbon material via an integrated microbial and chemical catalytic processes are described. The system and method comprise a bioreactor in gas communication with a pyrolysis reactor, wherein the microbes of the bioreactor uptake CO2 dissolved in aqueous solution and convert it to a volatile organic carbon compound, such as, for example, methane, which, in turn is fed into the pyrolysis reactor for catalytic conversion to a carbon material, wherein the carbon material may include crystalline carbon. The thus obtained carbon material is easily collectable for various high end uses or for CO2 storage.

A method for readily estimating the coke strength of coal-blend coke after CO2 reaction is provided. A coal-blend coke CSR estimating method for estimating the coke strength of coal-blend coke after CO2 reaction (CSR) using a TG reactivity index that is a percentage weight loss measured by thermogravimetry of coke held in a CO2 atmosphere at a predetermined temperature range for a predetermined time, the method including a step of measuring the TG reactivity indices of single-coal cokes and estimating the TG reactivity index of the corresponding coal-blend coke from the weighted average of the TG reactivity indices measured of the single-coal cokes; a step of estimating the coke reactivity index (CRI) of the coal-blend coke from the TG reactivity index of the coal-blend coke estimated in the previous step; and a step of estimating the coke strength of the coal-blend coke after CO2 reaction (CSR) from the coke reactivity index (CRI) of the coal-blend coke estimated in the previous step and the drum index (DI) of the coal-blend coke.

This application belongs to the technical field of air intake systems and discloses an air intake system for an integrated carbonization machine, including an air intake pipe, a first mounting shaft, a first semi-circular plate, a second mounting shaft, and a second semi-circular plate. A connecting rod is hinged to one side of the second semi-circular plate, and the end of the connecting rod away from the second semi-circular plate is hinged to the first semi-circular plate. A sliding seat is slidably installed inside the air intake pipe, and control rods are hinged to both sides of the sliding seat. One end of the control rod is hinged to the first semi-circular plate. A drive assembly and an air intake assembly are installed inside the air intake pipe. The drive assembly drives the sliding seat to slide, which in turn moves the control rods, causing the two first semi-circular plates and the two second semi-circular plates to rotate. The two first semi-circular plates become flush and seal the inside of the air intake pipe, and the two second semi-circular plates similarly seal the inside of the air intake pipe. The two sealing structures ensure the sealing effect inside the air intake pipe, preventing outside air from entering the carbonization machine through the air intake pipe, thereby ensuring the carbonization effect of the material inside the carbonization machine.

The utility model relates to the technical field of coal coking, and particularly discloses coking coal cascade preheating equipment which comprises a processing barrel, the top of the processing barrel is fixedly connected with a top cover, a uniform heating structure is arranged in the processing barrel and the top cover, and the uniform heating structure is used for uniformly heating coal. Coal falls into the hopper in the top layer, meanwhile, a motor operates to drive a main shaft to rotate, so that an inner fixing ring and a stirring rod are driven to rotate, the added coal is evenly preheated, after preheating is completed, the motor rotates reversely, an elastic pushing strip on the top layer is driven to rotate, a pushing rod is poked, and therefore a sliding plate is driven to contract; coal is discharged downwards into the outer hopper along the opening and discharged into the lower layer through the outer hopper to be preheated for multiple times, meanwhile, after discharging is completed, coal can be continuously added inwards from the top, preheating is conducted, coal cascade multi-layer preheating can be completed, and it is guaranteed that coal is fully preheated.

A method for readily estimating the coke strength of coal-blend coke after CO2 reaction is provided. A coal-blend coke CSR estimating method for estimating the coke strength of coal-blend coke after CO2 reaction (CSR) using a TG reactivity index that is a percentage weight loss measured by thermogravimetry of coke held in a CO2 atmosphere at a predetermined temperature range for a predetermined time, the method including a step of measuring the TG reactivity indices of single-coal cokes and estimating the TG reactivity index of the corresponding coal-blend coke from the weighted average of the TG reactivity indices measured of the single-coal cokes; a step of estimating the coke reactivity index (CRI) of the coal-blend coke from the TG reactivity index of the coal-blend coke estimated in the previous step; and a step of estimating the coke strength of the coal-blend coke after CO2 reaction (CSR) from the coke reactivity index (CRI) of the coal-blend coke estimated in the previous step and the drum index (DI) of the coal-blend coke.

The invention discloses a high-reactivity coke evaluation method suitable for a 3000-4500 m < 3 > blast furnace, which comprises the following steps: sampling and researching tuyere coke of the 3000-4500 m < 3 > blast furnace, analyzing the relationship between the average granularity of the tuyere coke and the air permeability and liquid permeability of a blast furnace material column, the stability of the blast furnace condition and the cold and hot strength of coke, and providing the coke evaluation method suitable for the 3000-4500 m < 3 > blast furnace: CRI is greater than or equal to 22.0%, CSR is greater than or equal to 66.0%, M40 is greater than or equal to 89.0%, and Ad is less than or equal to 12.5%. The evaluation method is applied to adjustment of a coal blending scheme, and on the basis of ensuring the smelting quality and stability of the blast furnace, the reactivity of coke fed into the furnace and the solution loss reaction efficiency of the coke in the blast furnace are improved, the tuyere coke granularity is improved, the hearth activity is improved, the blast furnace yield and the furnace condition stability are improved, and the coal blending cost and consumption are reduced.

Coke products configured to be combusted in a cupola furnace are disclosed herein. The coke products can include foundry coke products having a hydraulic diameter of at least 3.5″, egg coke products having a hydraulic diameter of 1.5-3.5″, and breeze coke products having a hydraulic diameter of 0.5-1.5″. Individual foundry coke products can comprise an oblong shape including a length of at least 4″, a width of at least 1.5″, and a length:width ratio of at least 2.0. In some embodiments, the length of individual coke products can be between 6-12″ and the width can be at least 2.5″. Additionally, the foundry coke products can have a Coke Reactivity Index (CRI) of at least 40%. The coke products can be made from a blend of coal and breeze coke products in horizontal ovens, such as horizontal heat recovery or horizontal non-recovery ovens.

The present disclosure provides a corrosion-resistant device for gas-solid separation, the device including a feeding inlet, a filter element, a solid outlet, and a gas outlet.

The utility model discloses a coke discharging and dust removing device for a coke oven, which relates to the technical field of coke oven dust removing equipment and comprises a dust removing cover, the bottom of the dust removing cover is arranged above a coke receiving device, and the top of the dust removing cover is communicated with one end of a branch pipe; and the other end of the branch pipe is communicated with the dust removal main pipe. According to the coke-discharging and dust-removing device for the coke oven, the dust-collecting main pipe is directly arranged at the top of the coke oven column, so that the length of the branch pipe is obviously shortened and the occupied area is reduced. Due to the fact that the pipeline is short, resistance is reduced, and the system fan can achieve the energy-saving effect.

The present invention relates to a treatment process for reducing the sulfur content of calcined petroleum coke, and belongs to the technical field of petroleum coke desulfurization process. The treatment process comprises grinding the petroleum coke, screening it, adding a composite catalyst, mixing it, and then performing a high-temperature calcination treatment, which is completed after cooling; the preparation of the composite catalyst comprises: grinding and mixing rectorite, light calcium carbonate and anhydrous ethanol, adding mercaptosuccinic acid and stirring and mixing, adding a coupling agent and mixing it, and then heating it, filtering out the solid matter, vacuum drying and calcining it, adding ethylene glycol and deionized water and mixing it, adding nickel nitrate hexahydrate and ammonium molybdate tetrahydrate, adding ammonia water and heating and stirring it, cooling it to room temperature and then centrifuging it, washing it three times with an ethanol solution, vacuum drying it and then calcining it. The treatment process of the composite catalyst prepared by the present invention for catalyzing the desulfurization of petroleum coke has excellent desulfurization effect and can effectively reduce the sulfur content of calcined petroleum coke.

To provide a temperature measurement system capable of acquiring a standardized temperature of a combustion chamber used for temperature control of a coke oven.SOLUTION: A temperature measurement system comprises: a two-color radiation thermometer that measures a temperature of a flue constituting a combustion chamber based on a ratio of spectral radiances at two different wavelengths acquired through an optical window provided in an observation hole above the combustion chamber of a coke oven; and a standardized temperature calculation device that calculates a standardized temperature of the combustion chamber. The standardized temperature calculation device includes: a measurement target identification unit that identifies the combustion chamber including the flue to be measured based on a measurement position by the two-color radiation thermometer; and a standardized temperature calculation unit that calculates the standardized temperature from a combustion switching time of the flue to be measured, a temperature of the flue measured by the two-color radiation thermometer, and a measurement time, using a temperature change formula representing a temperature of the flue that changes with time during combustion switching for switching over between a combustion-side flue and an exhaust-side flue of the combustion chamber, the temperature change formula being acquired in advance.SELECTED DRAWING: Figure 3

To provide a fluidity improving agent for ironmaking raw materials having excellent fluidity, a method for improving fluidity of ironmaking raw materials using the fluidity improving agent, and an ironmaking method using the fluidity improving agent.SOLUTION: A fluidity improving agent for ironmaking raw materials comprises an ester compound. The ester compound has a flash point of 250°C or higher. The kinematic viscosity of the ester compound at 40°C is 1.0×10-4 m2 / s or less. The solubility of the ester compound in water at 25°C is less than 1 g / 100 g.SELECTED DRAWING: None

The utility model relates to the technical field of coking coal preparation, in particular to a coking coal preparation device with a coal distributing device, a coal distributing assembly is installed on the upper portion of a fixing frame, a smashing assembly is installed at the position, corresponding to the coal distributing assembly, of the outer portion of the fixing frame, and the coal distributing assembly comprises a discharging conveying frame installed on the upper portion of the fixing frame. A connecting frame is fixedly installed at the tail end of the outer end of the discharging conveying frame, a coal distributing sliding sleeve is fixedly installed at the outer end of the connecting frame, rotating shafts are symmetrically and rotationally connected to the two sides of the interior of the discharging conveying frame, and a conveying belt is connected between the exteriors of the two rotating shafts. And a folding sliding sleeve is erected and installed at the position, corresponding to the conveying belt, of the upper portion of the discharging conveying frame, and the outer end of the folding sliding sleeve is rotationally connected with a connecting sliding sleeve. The coking coal preparation device with the coal distributing device is small in size and convenient to carry and use, coal can be efficiently and conveniently distributed, the practicability of the whole device is improved, and better use prospects are brought.

The invention discloses a method for evaluating the volume change rate of foundry coke, and belongs to the technical field of foundry coke production. The method comprises the following steps: substituting volatile components and caking indexes of coal as fired into a formula Vc = 0.4435 * Vdaf + 0.1995 * G-20.1214 to obtain a predicted value of the volume change rate of foundry coke; according to the method, the complex relation between the as-fired coal index and the foundry coke volume change rate can be accurately captured, the average absolute error can be controlled within 3% through actual verification, and compared with the prior art, the accuracy is improved by 40%-60%; the problem that the volume change rate of foundry coke cannot be accurately predicted is solved.