43results about How to "Shorten coking time" patented technology

This invention discloses a coal blending method and its technology of dust removal coking coal powder using as lean agent to substitute clean coal. It collects coke dry quenching environmental dust removal coking coal powder, coke dry quenching technological dust removal coking coal powder, coking ground dust moving station dust removal powder, mixing them homogeneously, and then putting them into stockhouse, and then transporting into dosage bunker by leather belt transport machine, and then transporting to leather belt transport machine equipped with electronic scale by dosage plate, and then quantitively transporting to leather belt transport machine equipped with dust fall equipment, and at last, sending into crusher together with other coal for coking and mixing them homogeneously in blending coal room for coking at coking chamber of coke oven.

The invention provides a coal thermolysis device for heat-carrying gas. The coal thermolysis device is formed by correspondingly fastening two metal plates in which a plurality of semicircular concave grooves are arranged according to the concave grooves, wherein the plurality of semicircular concave grooves are combined to form a plurality of heat-carrying gas heat transmission pipes; the heat transmission pipes are sequentially communicated with a small vertical pipe, a transverse pipe, a main pipe, a heat-carrying gas inlet and a heat-carrying gas outlet, so as to form a heat-carrying gas heat transmission system. According to the coal thermolysis device, the heat-carrying can be used for directly drying the coal in a destructive distillation chamber through a metal heat intromission pipe, so as to achieve normal-pressure or destructive distillation; and the coal thermolysis device has the characteristics of being fast in transmission rate, high in heat utilization rate, simple in structure and low in cost.

The invention relates to a movable slide bed tunnel type coke oven and a use method thereof, and belongs to the field of coal processing and conversion and coking equipment. The coke oven comprises an oven body (48), a front sealing door (7) of the coke oven body, a back sealing door (25) of the coke oven body, a sub-flue (10), a bottom flue (12) and a main flue (6), and is characterized by comprising a coaling preparation chamber (3), a preheating section (50), a carbonization section (51), coke dry quenching section (52) and a coke outlet preparation chamber (23), each part has different structures, and the five parts are connected in series and communicated with each other; and a movable slide bed (37) of loading briquettes or tamping coal materials (44) sequentially pass through the five parts of the coke oven by intermittently moving on a slideway (35) of the slide bed, so that the coal materials are carbonized into coke. The produced coke has uniform specification, large lumpiness, good strength, high heat energy utilization rate, high degree of mechanization, and clean emission of flue gas, and the invention effectively protects atmosphere and water sources and realizes clean production.

The invention discloses a novel cell-type coking furnace, wherein the coal is subjected to destructive distillation in charring chamber, most of the obtained coal gas enters horizontal gas channel, and is divided to adjacent blast chambers through the coal gas distribution hole, the rest is distributed to each blast chamber. The dedusted thermal waste gas can be used by exhaust-heat boiler to produce steam power generation.

The invention relates to a small constant pressure coking device and a constant pressure coking method, comprising an experimental coke oven, a temperature controller, a constant pressure system and a control system; The system consists of a hydraulic pump, a buffer cylinder and a moving platen. The push rod of the buffer cylinder is connected to the moving platen through the first hollow tube and can drive it to move up and down in the carbonization chamber. The bottom end of the first hollow tube passes through the moving platen and connects to the carbonization chamber for coking. Side internal space; a temperature sensor is installed in the carbonization chamber, a displacement sensor is installed on the top of the experimental coke oven, and an oil pressure regulator is installed on the hydraulic pipeline between the hydraulic pump and the buffer cylinder. The present invention can make coke under constant pressure conditions, so as to obtain the corresponding relationship between pressure and coke quality, or conduct comparative research on the coke quality of different coal types under the same pressure conditions, which is of great guiding significance for coal blending coking and coking mechanism research. To achieve the purpose of optimizing the coking production process, saving coking equipment investment and realizing the effective utilization of resources.

The invention relates to an energy-saving coke oven door structure, which comprises a coke oven door composed of an oven door lining brick and an oven door iron piece, the oven door iron piece comprises an oven door body, an oven door fastening piece, an oven door sliding plate, an oven door knife edge and an oven door web, the end, close to the coke oven body, of the oven door knife edge makes contact with an oven door frame around the oven door, the inner side of the furnace door knife edge is contacted with the furnace door belly edge, and the surfaces of the furnace door lining brick, the furnace door frame, the furnace door web and the furnace door sliding plate are coated with heat insulation material coatings. The heat dissipating capacity of a carbonization chamber furnace end is effectively reduced, and the purposes of saving energy, reducing consumption and improving the energy utilization rate are achieved.

This invention discloses a coal blending method and its technology of dust removal coking coal powder using as lean agent to substitute clean coal. It collects coke dry quenching environmental dust removal coking coal powder, coke dry quenching technological dust removal coking coal powder, coking ground dust moving station dust removal powder, mixing them homogeneously, and then putting them into stockhouse, and then transporting into dosage bunker by leather belt transport machine, and then transporting to leather belt transport machine equipped with electronic scale by dosage plate, and then quantitively transporting to leather belt transport machine equipped with dust fall equipment, and at last, sending into crusher together with other coal for coking and mixing them homogeneously in blending coal room for coking at coking chamber of coke oven.

The invention discloses a low-temperature carbonization method of directly heating formed coke. The low-temperature carbonization method comprises the steps of: performing advanced co-grinding treatment on asphalt and a certain amount of powder material (the powder material is coke powder or pulverized coal); then adding the mixture into the coke powder to be mixed uniformly; then adding a certain amount of water and a dimethylbenzene activator in the uniformly mixed material; performing normal-temperature briquetting forming and volatilization treatment; and finally directly heating the formed coke to realize low-temperature carbonization of the formed coke, thereby obtaining the carbonized formed coke. Through the measures, the low-temperature carbonization and solidification of the formed coke is realized through direct heating on the premise that the quality of the formed coke is guaranteed. Only by pre-treating the raw materials, can the formed coke be carbonized at low temperature by direct heating under an air, nitrogen or carbon dioxide atmosphere; therefore, the low-temperature carbonization method of directly heating the formed coke, disclosed by the invention, has the advantages of simplifying the subsequent process flow, reducing the production cost and breaking the limitation that the formed coke in the traditional formed coke process must be indirectly heated to a high temperature for the carbonization under a sealing condition.

The invention discloses a clean thermal recycling coke oven bridge pipe which belongs to the industrial kiln accessory field and comprises an outer casing and a liner. The pipe is characterized in that the liner is composed of a clay brick layer, an aluminosilicate insulation carpet layer and an insulation brick layer. The clay brick layer is arranged at the most inner layer of the bridge pipe. The aluminosilicate insulation carpet layer is arranged on the external surface periphery of the clay brick layer. The insulation brick layer is arranged between the outer casing and the aluminosilicate insulation carpet layer. Compared with the prior art, the clean thermal recycling coke oven bridge pipe has the characteristics of light weight, high temperature resistance, low heat conduction, etc.

A method for reducing the coking time in the oven area near the door or end wall and for improving coke quality and situation of emissions by compensating for radiation losses through coke oven chamber doors and end walls is described. This compensation is accomplished by varying the height of the coal cake in the environment of the frontal coke oven chamber doors. The variation is achieved both by increasing or decreasing the coal cake over part of the length or over the entire length of the coke oven chamber door. The reduction in the height of the coal cake can be generated by omission of coal or coal compacts, the increase in height can be accomplished by stacking of coal and pressing or adding of coal compacts, with it also being envisaged to omit the pressing cycle so as to obtain a recess with a lower coal cake density which also has less heat radiation.

A casting type coke carbonization furnace, including a carbonization furnace group, an operation platform, a coke quenching pool, a temperature control system, and a smoke detection system. The carbonization furnace group is composed of one or more single-hole furnaces, and each single-hole furnace consists of a furnace body , carbonization chamber, combustion chamber, air distribution device and flue; inside the shell of the furnace body, there is a ladder-shaped vertically high front and low rear, and a double-layer vault with a 180-degree semicircle in the horizontal direction. The carbonization under the vault The chamber has an inclined structure with a high front and a low rear; under the carbonization chamber is the combustion chamber, which has a 20-50 degree inclined plane bottom with a high front and a low rear, and the upper end of the combustion chamber has a feeding furnace door connected to the feeding platform , the lower end has a discharge furnace door connected to the coke quenching pool; there are 2-6 vertical flues and branch flues in the furnace body, a carbonization chamber distribution outlet is provided at the front and rear ends of the carbonization chamber, and the front and rear ends of the furnace body are Each is provided with two flue air distribution outlets; the invention provides comprehensive and uniform heating, fully burns fuel, efficiently utilizes heat energy, has fast heating speed, high heating temperature, reduces carbonization and coking time, improves production efficiency, prolongs service life, and reduces production costs .

The invention relates to an air-preheating-type heat recovery coke oven. The air-preheating-type heat recovery coke oven comprises a combustion chamber, a carbonization chamber, a chute, a pressure balance chamber, a criss-cross exhaust gas flue and a combustion air distribution channel, wherein the chute is connected between the combustion chamber and the pressure balance chamber; the criss-crossexhaust gas flue is arranged at the lower portion of the pressure balance chamber and communicated with the pressure balance chamber; the combustion air distribution channel is arranged at the lowerportion of the criss-cross exhaust gas flue; an air preheating upright channel is arranged in a main wall below the combustion chamber and communicated with the combustion air distribution channel; anupright fire flue partition combustion air channel is arranged in upright fire flue partitions and communicated with the air preheating upright channel; an outlet of the upright fire flue partition combustion air channel is communicated with upright fire flues of the combustion chamber. According to the air-preheating-type heat recovery coke oven, combustion air is uniformly distributed and supplied into the upright fire flues of the combustion chamber and merged with raw coke oven gas in the upright fire flues for combustion after being subjected to sufficient heat transfer and temperature rise with high-temperature exhaust gas, so that the combustion temperature is increased, the coking time is shortened, and the purpose of improving the production efficiency is achieved.

The invention discloses a microwave pretreatment desulfurization coking device, and particularly provides a device for coking coal. The device comprises a coal blending process, a coal charging process and a coking process; and the method further comprises a microwave pretreatment process between the coal blending process and the coal charging process. The microwave pretreatment process adopts a microwave pretreatment device with the microwave frequency ranged from 300MHz to 300GHz for irradiating, dewatering and desulfurizing the blended coal; and the temperature of the pretreated coal sample is controlled between 150 and 250 DEG C; and then coal is prepared to be charged into a stove and coked. The microwave pretreatment device comprises a microwave reaction chamber body, a connecting device, a conveyor, an exhaust duct and a detection control system, wherein the connecting device, the conveyor, the exhaust duct and the detection control system are arranged among the microwave reaction chamber body, a coke stove coal tower and a coal charging trolley or a material bin. The device is simple; after being quickly preheated, dewatered and desulfurized, the blended coal can be coked so as to improve the bulk density, shorten the coking time and promote the yield of a single furnace as well as the coal quality; and clean and effective utilization of energy can be realized.

The invention discloses a composite building structure of coke oven heat accumulation chamber checker bricks. The composite building structure comprises clay bricks, wherein the lower part of a heat accumulation chamber is made of the clay bricks; the layer number of the heat accumulation chamber accounts for 50-80% of the total building layer number of the heat accumulation chamber; checker bricks made of low-aluminum mullite and andalusite are built on the clay bricks; the layer number of the checker bricks accounts for 20-50% of the total building number of the heat accumulation chamber; the low-aluminum mullite refers to mullite of which the aluminum oxide content is smaller than 60%. The high temperature deformation resistance of the composite building structure of the coke oven heataccumulation chamber checker bricks can be increased by 100-200 DEG C, the service life can be greatly prolonged, the heat exchange efficiency of the heat accumulation chamber can be also improved, agood effect can be achieved for solving low temperature problems of a coke oven heat accumulation chamber of 7.63m, the coking time of a coal layer of each carbonization chamber can be shortened by 1-3 hours, and the composite building structure has a reference function for checker brick structures and materials of other similar coke oven heat accumulation chambers.

This invention is a kind of new-type vertical continuous coke oven, and a high-temperature dry distillation coking device of coal. The main characteristic of this invention is: After the cool furnace roof holds the coal, are urged to fall by the jar of hydraulic pressure of the furnt device, arrange the burnt device, list while being cool by stove bottom finally, dry distillation coal gas a part that course produce melt down and heat, the others support downstream production need; Air after preheating by heat exchanger, is it set up by oblique way fire dish mix burning with coal gas to enter, the high-temperautre waste gas after burning is discharged by the horizontal passway of the waste gas in the top of combustion chamber, retrieve heat energy for the power plant of remaining energy.

The invention provides a coking method for increasing the consumption of weak binding coal and reducing production energy consumption. The coking method comprises the following steps: (1) charging blended coal from the coal charging hole of a carbonization chamber, assembling a furnace door, and introducing coal gas and air into a combustion chamber, wherein the coal gas is mixed coal gas of cokeoven coal gas and blast furnace coal gas; (2) transferring heat generated by the combustion of the coal gas and the air to the blended coal in the carbonization chamber through a furnace wall betweenthe combustion chamber and the carbonization chamber; and (3) when the center temperature of the blended coal in the carbonization chamber reaches 1050 DEG C, and smoldering for 1.7-2 hours to obtaincoke, wherein preferably the heat conductivity coefficient of the furnace wall in the step (2) is 2.25-2.55 W / m.K. By utilizing the method, the consumption of weak bonding coal can be effectively increased, the quality of coke is not degraded, the risk of coking coal resource shortage caused by reduction of high-quality coking coal resources can be effectively relieved, and the coke oven yield ina coking process can be effectively increased.

The present application relates to a coal internally heated carbonization retort, an internally heated coal carbonization system and process. The resort may comprise one or more carbonization chambers with heating gas conducting walls, one or more heating gas distribution channels and an oxygen-deficient heating gas generator. The carbonization chambers may be arranged in parallel and filled with coals, and the heating gas generator may be configured to generate oxygen-deficient heating gas which is fed into the carbonization chambers through their heating gas conducting walls after the heating gas goes through the transmission and distribution pipes, and distribution channels. The heating gas directly contacts with and heats the coals filled in the chambers for carbonization or coking.