SU1527150A1 - Line for producing graphitized articles - Google Patents

Abstract

The invention relates to the carbon industry and can be used to produce graphitized products. The goal is to improve the physical and mechanical characteristics of finished products, saving raw materials and energy. The invention describes a line for the production of graphitized products, including transport communications containers for coke and pitch, devices for grinding coke, a melter, metering units, a mixer, a press, an autoclave, furnaces for heat treatment of products, as well as a storage tank for hot gases, associated with transport communications equipped with fans, with heat treatment furnaces, a peaker, mixer and autoclave. Moreover, the transport communications linking the accumulating tank with a peaker melter, a mixer, and an autoclave are additionally equipped with intermediate tanks. The invention makes it possible to improve the physicomechanical characteristics of the products by an average of 7%, while the savings of raw materials and energy are 3 and 5%, respectively. 1 tab., 1 Il.

Description

This invention relates to carbon industry and can be used to produce grafted articles.

The purpose of the invention is to improve the physical and mechanical characteristics of the finished products, as well as to save energy and energy.

The drawing shows a schematic of a line for producing graphitized products.

The line contains a storage tank 1 for coke, for example, oil, a calcining furnace 2, a fan 3, an accumulation tank 4, which, in

turn, through the fan 5, is connected with the intermediate tank 6. The line also contains the mill 7, for example, ball, with the drive 8, the air inlet with the fan 9, the fan 10 installed at the outlet of the tank 4, the intermediate tank 11, screen 12 with a drive 13, bunkers 14 for storing various coke fractions, a dosing unit 15 for coke, at the outlet of which an air inlet with a fan 16 is located, a melter 17 equipped with an air inlet with a fan 18, a dosing unit 19 for pitch and a mixer 20

with a drive 21. At the entrance to the jacket of the Mixer 20, an air inlet is placed with a fan 22 connected to an intermediate tank 23. The line is also equipped with a press 24, a furnace 25 for firing with a fan 26 installed in its discharge channel, an autoclave 27 for impregnation products, for example, coal tar pitch, a graphitization furnace 28 with a fan 29 installed in its discharge channel.

Lini works as follows.

The initial coke produced by the hard pyrolysis mode enters the storage hopper 1, from where it is fed to a quenching furnace 2, for example, a retort furnace, the temperature of the flue gases with which ranges from 200 to, then to the Kennedy 7 mill, then screen (or screens) 12, where, for example, fractions of -1.2 + 0.5 mm and -0.5 m are separated (the dust fraction is removed from the mill 7 by pneumatic removal). Coke-Bofi batch fractions are stored in bunkers 14, from where they are fed to the dosing unit 15 for coke, and from there to the mixer 20. At the same time, the binder (in this case, coal grade A grade) from pequitelizer 17 at 150-160 ° C (before) through the dosing unit 19 for the pitch, which is, for example, a valve with a steam jacket, also enters the mixer 20. After mixing, for example, at 120 ° C for 1.5 hours, the coke mass is fed to the press 24 for pressing a piercing or blind die. Compressed blanks, for example, with a diameter of 260 and a height of 380 mm, are loaded into a kiln 25 for firing and heat-treated with a uniform rise in temperature to 1000 ° C during POh and holding at this temperature for 20 hours. The burned blanks are then heated to autoclave 27, pumped out to a residual pressure of 130 mm Hg. pour, for example, coal tar pitch grade A, pressure is applied to 6 atm and maintained for 5 hours.

The roasting-impregnation cycle is carried out 2-3 times, followed by graphitization in a graphitadion furnace 28, at the same time

Exhaust gases from the calcining furnace 2 with a temperature of 200-250 ° C, from furnace 25 for firing with a temperature of 150 ° C for the multi-chamber variant and for

Q

0 5 Q

five

0

five

individual chambers, from a graphitization furnace 28 with a temperature of 300- using fans of 3.26 and 29, respectively, with a capacity of, for example, 20 m / min are served in. The accumulator tank 4, where they are mixed, while their temperature is averaged and is 190-220 ° C. Then, using a fan 5 (for an individual heating variant of the autoclave 27), these gases are fed to the intermediate tank 6, from where needing with help. A special fan (not shown) is introduced into the jacket of the autoclave 27, providing impregnation of the product at the upper limit of the temperature range, i.e., at 210-220 C.

If the gas temperature is too high, it is also possible to use additional air intake with a fan for air dilution. Similarly, the hot gases from the storage tank 4 are fed through, the fan 10 into the intermediate tank 11 and mixed with air from the air inlet with the fan 9, brought to 180-190 ° C, and then the peicusor 17 is fed into the jacket 20-30 0 gases enter the dosing unit 19, then into the intermediate tank 23, where gases also flow from the autoclave 27 with a temperature of 190-200 C. From the tank 23 through the pipeline with air inlet and the fan 22 serves hot gases with temperature 150-160 C in mixer shirt 22, secured willow mixing the coke-pitch mass at 130-140 ° C. At the same time, the gases are cooled to T00-120 ° C and, having passed through the press 24, enter the jackets of the hoppers 14, into the dosing unit 15, and then, having cooled to 60-80 ° C, using the fan 16 - into the bunker 1, heating the initial coke, giving it its heat and thus reducing the cost of heat for its subsequent heating,

The table presents the data on the physicomechanical characteristics of the products obtained using the known and proposed lines, as well as comparative data on the consumption of raw materials | And energy.

From the data presented in the table it follows that the proposed line allows to improve the physicomechanical 5I 5271

The product characteristics are on average 7%, while saving 9ir and energy is 3 and 5% respectively.

Claims (1)

Claim Line of Invention for producing graphitized articles, including transport capacities for coke and associated communications. pitch, coke grinding device, baking mill, dozing knots, mixer, cress, autoclave and furnaces for heat treatment of products, characterized in that 0 In addition to the physicomechanical characteristics of ready-made products, as well as the saving of raw materials and energy, it is additionally equipped with at least one active supply agent for hot gases associated with transport communications equipped with fans with ovens for heat treatment of products. , a baking maker, a mixer and an autoclave, and transport communications, connecting the accumulating tank with the baking maker, the mixer and the autoclave are additionally equipped with intermediate tanks. Data is presented for products of graphite brand BCP. 2725 2B 2li 9 Compiled by N.Kodinets Editor NgYatsola Tehred M. KhodanychKorrektor L. Patay Order 7470/29 Circulation 435 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk, Emb. 113035 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription