KR102536548B1 - A processing system that can separate gas and tar when producing semi-coke from bituminous coal - Google Patents

Abstract

The present invention relates to a processing system capable of separating gas and tar when manufacturing semicoke from bituminous coal, and more specifically, to a processing system capable of separating gas and tar when manufacturing semicoke from bituminous coal, wherein gas and tar can be smoothly separated, collected and recycled as another energy source instead of discarding the gas and tar generated when manufacturing semicoke through low-temperature pyrolysis of bituminous coal, and accordingly processing system is improved so that processing efficiency can be increased and additional energy sources can be obtained.

Description

A processing system that can separate gas and tar when producing semi-coke from bituminous coal {A processing system that can separate gas and tar when producing semi-coke from bituminous coal}

The present invention relates to a treatment system capable of separating gas and tar when producing semi-coke from bituminous coal, and more particularly, to a treatment system that does not dispose of gas and tar generated when semi-coke is produced by low-temperature pyrolysis of bituminous coal. A processing system that can separate gas and tar when manufacturing semi-coke from bituminous coal, which has been improved to increase processing efficiency and obtain an additional energy source by smoothly separating and collecting it and recycling it as another energy source It is about.

Bituminous coal is a coal between anthracite and lignite, and refers to a fuel cost (fixed carbon / deriving) 1 to 7.

And, in the case of coal, it usually refers to this, and is usually used as a raw material for coke for steelmaking or for general fuel.

Such bituminous coal is used as a major energy resource because it is very cheap and plentiful despite having a higher level of pollution and higher carbon emissions than other alternative energies.

However, the gas and oil contained in bituminous coal increase the concentration of smog and other harmful gases in the air in cities, thereby becoming a major cause of air pollution.

In addition, incidentally generated tar is collected and disposed of by burying it in the ground. Although disposal costs are high, the problem of soil contamination is serious and is regulated.

Domestic Patent No. 10-1734666 (2017.05.02.) Anthracite production device by pyrolysis from bituminous coal

The present invention was created to solve the problems in view of the various problems in the prior art as described above, and to smoothly separate and collect the gas and tar generated when semi-coke is produced by low-temperature pyrolysis of bituminous coal without discarding them. Its main purpose is to provide a treatment system that can separate gas and tar when producing semi-coke from bituminous coal, which has been improved to increase processing efficiency and obtain additional energy sources by enabling recycling as another energy source. there is.

The present invention is a means for achieving the above object, a semi-coke maker (SCM) that receives bituminous coal and makes semi-cokes, and receives the semi-cokes produced by the semi-coke maker (SCM) and molds them into products. A product molding machine (BQM) that introduces and burns the pyrolysis gas generated in the semi-coke maker (SCM) and obtains thermal energy and electrical energy using the heat and combustion gas generated during combustion, and a gas power plant (GPP), Provides a treatment system capable of separating gas and tar when producing semi-coke from bituminous coal, comprising a tar separator (TRS) that introduces the tar generated in the semi-coke maker (SCM) and separates it from tar and water do.

At this time, the semi-coke maker (SCM) has a storage hopper 100 for storing and ejecting bituminous coal, an electric reaction tank 200 for heating and decomposing the bituminous coal ejected and transported from the storage hopper 100, and in the electric reaction tank 200 It includes a cooling reaction tank 300 that collects heat-decomposed gas and oil vapor to separate tar and moisture; The product molding machine (BQM) includes a supply hopper 400 for supplying bituminous coal that has been heated and cooled from the semi-coke maker (SCM) and transported, and a mixer for mixing and stirring bituminous coal input from the supply hopper 400, water, and a hardener. 410, a water supplier 420 for supplying water to the mixer 410, a curing agent injector 430 for injecting a curing agent into the mixer 410, and the raw material supplied from the mixer 410 as a product It includes a molding machine 440 to make a shape, and a packaging machine 450 to package the molded product; The gas power plant (GPP) includes a burner 500 for igniting pyrolysis gas, a gas combustion chamber 510 in which flames attached by the burner 500 are burned, and exhaust gas generated during combustion in the gas combustion chamber 510 An economizer 520 that partially recovers waste heat, a condensing turbine 530 that is rotated by the discharge pressure of the exhaust gas generated during combustion in the gas combustion chamber 510, and connected to the condensing turbine 530 to produce electricity The generator 540, the air-cooled condenser 550 that processes the exhaust gas discharged from the condensing turbine 530 and discharges it into the atmosphere, and the exhaust gas that has passed through the economizer 520 is sucked in and discharged into the atmosphere through a chimney. It includes a discharge fan 560 to; The tar separator (TRS) receives the tar mixture separated from the cooling reaction tank 300 and stored in the tar storage tank 350 and separates the tar-oil-mist into a separator 600 and the oil separated in the separator 600 In the oil mist storage tank 610 in which mist is stored, the oil water separator 620 for separating oil and water from the remaining oil after gas is separated in the oil mist storage tank 610, and the separator 600 A tar storage tank 630 in which the separated tar is accommodated, and a tar drum filling tank 640 in which the remaining oil separated from the oil-water separator 620 and the tar discharged from the tar storage tank 630 are stored but; The electric reaction tank 200 includes a plurality of microwaves 210, a plurality of heat transfer plates 220 for preheating the heat generated by the microwaves 210, and screws arranged in the longitudinal direction inside the electric reaction tank 200. The feeder 230, the partition wall 240 partitioning the inside of the electric reactor 200 into a total of 5 sections in a longitudinal direction, and the temperature of the space partitioned by the partition wall 240 is measured. It is also characterized by including a detection sensor 250 and an inspection port 260 for checking the inside and for maintenance.

According to the present invention, gas and tar generated when semi-coke is produced by low-temperature pyrolysis of bituminous coal are not disposed of, but are smoothly separated and collected so that they can be recycled as another energy source, thereby increasing processing efficiency and reducing additional energy An improved effect can be obtained to obtain a circle.

1 is a configuration diagram showing a processing system capable of separating gas and tar when producing semi-coke from bituminous coal according to the present invention.
2 is an exemplary configuration diagram showing a product molding machine constituting the processing system according to the present invention.
3 is an exemplary configuration diagram showing a gas power plant constituting the processing system according to the present invention.
4 is an exemplary configuration diagram showing a tar separator constituting the treatment system according to the present invention.
5 is an exemplary view of an electric reaction tank constituting the semi-coke maker of the treatment system according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to the description of the present invention, the following specific structural or functional descriptions are only exemplified for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms, It should not be construed as limited to the embodiments described herein.

As shown in FIG. 1, the processing system capable of separating gas and tar when producing semi-coke from bituminous coal according to the present invention includes a semi-coke maker (SCM) that receives bituminous coal and makes semi-cokes, A product molding machine (BQM) that receives the semi-coke produced in the semi-coke maker (SCM) and molds it into a product, and introduces and burns the pyrolysis gas generated in the semi-coke maker (SCM), and heat and combustion gas generated during combustion It includes a gas power plant (GPP) that obtains thermal energy and electrical energy by using a gas power plant (GPP), and a tar separator (TRS) that separates tar and water by introducing the tar generated in the semi-coke maker (SCM).

At this time, the product forming machine (BQM) can be exemplified by making various products, preferably briquettes.

In addition, the gas power plant (GPP) introduces pyrolysis gas to operate the boiler, obtains hot water obtained through boiler operation as an energy source, and also releases combustion gas generated during boiler operation into the atmosphere through an air-cooled condenser. It is implemented so that electrical energy can also be obtained by discharging through a generator.

In addition, the tar separator (TRS) completely separates moisture and collects it as coal tar, and then it can be recycled as a packaging material by post-processing.

Here, the semi-coke maker (SCM) includes a storage hopper 100 for storing and ejecting bituminous coal, an electric reaction tank 200 for heating and decomposing the bituminous coal ejected and transported from the storage hopper 100, and the electric reaction tank 200 It includes a cooling reaction tank 300 that collects gas and oil vapor decomposed by heating in and separates gas, tar, and water.

At this time, the storage hopper 100 can be manufactured with a concrete structure or a steel structure, and is configured to store an appropriate amount of imported bituminous coal and transfer it to a downstream facility through a payloader.

In addition, a leveler 102 is installed at the lower end of the storage hopper 100 to detect and warn when the amount of unloaded bituminous coal is rapidly reduced.

In addition, bituminous coal discharged from the storage hopper 100 is conveyed to the electric counter-proofing tank 200 through a plurality of conveyors.

In this case, a jaw crusher 110 is further installed on a part of the conveyor so that bituminous coal to be transported can be crushed and transferred to a particle size of 50 mm or less. The reason for crushing to 50 mm or less in this way is to increase the reaction efficiency in the electric reactor 200.

In addition, the electric reaction tank 200 is configured to heat bituminous coal using microwaves 210 instead of electric heaters that consume a lot of power, as shown in the example of FIG. 5 .

These microwaves 210 provide equal or better effects with only 1/3 of the power consumption of conventional electric heaters when operating.

However, since the temperature tends to decrease rapidly when bituminous coal is introduced, heat generated in the microwave 210 may be primarily preheated in the heat transfer plate 220 to solve this problem.

Then, the internal temperature of the electric reactor 200 can be heated to about 380 ° C to 450 ° C by indirect heat.

In addition, inside the electric reaction tank 200, the screw feeder 230, the partition walls 240 partitioned into a total of 5 sections by partitioning each space in the longitudinal direction, and the temperature of the space partitioned by the partition walls 240 It includes a temperature sensor 250 for measuring and an inspection port 260 for checking the inside and for maintenance.

Here, the screw feeder 230 is a means for feeding the heated bituminous coal, and the barrier rib 240 is to keep the temperature of the input bituminous coal as high as possible and reduces heat loss.

In addition, the heated bituminous coal discharged from the electric reaction tank 200 is cooled through a plurality of cooling screw conveyors C1, C2, C3, and C4, and then transferred to a product molding machine (BQM).

In addition, the cooling reaction tank 300 includes a reaction vessel 310, a cooling jacket 320 installed around the reaction vessel 310, a chiller 330 supplying cooling water to the cooling jacket 320, While rotating inside the reaction container 310, the gas and oil vapor are rotated and stirred to discharge the gas to the top and the tar and moisture separated from the oil vapor to the bottom. The agitating blade 340 and the discharged tar and moisture are stored and stored. It includes a tar storage tank 350.

At this time, a plurality of cooling reaction tanks 300 are provided, treated in the same way, the exhaust gas discharged is discharged to the gas power plant (GPP), and tar and moisture are stored in the tar storage tank 330 and then stored in the tar separator (TRS) ) are sequentially discharged.

In addition, in the present invention, since the reaction vessel 310 constituting the cooling reaction tank 300 needs to process gas and oil vapor, it must have very strong acid resistance and corrosion resistance as well as heat resistance.

To this end, in the present invention, powder coating may be powder coated on the inner wall surface of the cooling reaction tank 300 using a corona electrostatic spray method.

Here, the powder coating is based on 100 parts by weight of bisphenol A epoxy resin powder, 5 parts by weight of boric acid, 5 parts by weight of antimony oxide, 5 parts by weight of dicyanamine, 40 parts by weight of aerosol, 5 parts by weight of barium carbonate, disodium 5 parts by weight of carboxyethylsiliconate and 10 parts by weight of dolomite powder are mixed.

At this time, it is preferable to use bisphenol A type having an equivalent weight of 500-600 g/eq as the epoxy resin powder. This is to increase, and if it is less than 500 g / eq, the surface of the coating film becomes rough, so it should be limited to the above range.

In addition, boric acid and antimony oxide enhance flame retardancy and acid resistance, and dicyanamine enhances adhesion stability due to its excellent strength, electrical properties and heat resistance.

In addition, aerosol has a structure in which fine threads made of silicon oxide (SiO ₂ ) are sparsely entangled, and is very effective in increasing high insulation performance due to a very low density and dense air layer. For this reason, in the present invention, by powder coating an aerosol having a nanoparticle size, heat insulation, heat resistance, and corrosion resistance are increased even though the thickness is low, and at the same time, the noise blocking effect can be enhanced by the sound insulation, which is a unique function of the aerosol.

In addition, barium carbonate promotes aggregation to improve curability, induces the formation of a smooth surface, and contributes to oxidation prevention and discoloration prevention by not absorbing ultraviolet rays.

In addition, disodium carboxyethylsiliconate enhances waterproofness and water repellency, and dolomite powder having a particle size of 10 μm enhances abrasion resistance and corrosion resistance.

On the other hand, as shown in the example of FIG. 2, the product molding machine (BQM) includes a supply hopper 400 for supplying bituminous coal that has been heated and cooled from the semi-coke maker (SCM) and transported, and bituminous coal and water input from the supply hopper 400. And a mixer 410 for mixing and stirring the curing agent, a water supplier 420 for supplying water to the mixer 410, a curing agent injector 430 for injecting the curing agent into the mixer 410, and the mixer 410 ) and a molding machine 440 for making the supplied raw material into a product shape, and a packaging machine 450 for packaging the molded product.

At this time, the packaging machine 450 may include both a tone bag packaging machine 452 and a bag packaging machine 454.

In addition, a distributor (DP) for distributing the molded product discharged from the molding machine 440 for distribution to the packaging machine 450 may be further provided.

Here, the supply hopper 400 may include a load cell 402 to measure a certain weight, and may further include a damper 404 to discharge the measured weight.

Then, when the measured semi-coke is introduced into the mixer 410, the water feeder 420 injects a fixed amount of water, and the curing agent injector 430 controls the fixed-quantity screw conveyor 432 to inject a fixed amount of hardener.

When the water and the curing agent are supplied in a fixed amount, the mixer 410 mixes the semi-coke for a set time, and when the mixing is completed, the mixture is supplied to the molding machine 440 by a certain amount through the bucket elevator 412.

On the other hand, as shown in the example of FIG. 3, the gas power plant (GPP) includes a burner 500 that ignites exhaust gas, that is, pyrolysis gas, and a gas combustion chamber 510 in which flames attached by the burner 500 are burned. An economizer 520 that recovers waste heat from a portion of the exhaust gas generated during combustion in the gas combustion chamber 510, and a condensing turbine 530 that is rotated by the discharge pressure of the exhaust gas generated during combustion in the gas combustion chamber 510, A generator 540 that is connected to the condensing turbine 530 to generate electricity, an air-cooled condenser 550 that treats the exhaust gas discharged from the condensing turbine 530 and discharges it into the atmosphere, and the economizer 520 It includes a discharge fan 560 for sucking in the exhaust gas passing through and discharging it into the atmosphere through a chimney.

At this time, the burner 500 and the gas combustion chamber 510 may be elements constituting the boiler, and according to this configuration, there is an advantage in that the pyrolysis gas is not simply discarded but recovered as thermal energy.

That is, the boiler can be turned to produce hot water, and this hot water can be used for heating.

In addition, as is well known, the economizer 520 can preheat feedwater supplied to the boiler using waste gas from the boiler, thereby contributing to increasing the thermal efficiency of the boiler.

On the other hand, as shown in the example of FIG. 4, the tar separator (TRS) has a separator 600 for separating the tar mixture returned from the tar storage tank 350 into tar-oil-mist, and a separator 600 separated in the separator 600. An oil mist storage tank 610 for storing oil-mist, an oil water separator 620 for separating oil and water from oil remaining after gas is separated in the oil mist storage tank 610, and the separator 600 A tar storage tank 630 in which the tar separated from is accommodated, and a tar drum filling tank 640 in which the remaining oil separated from the oil-water separator 620 and the tar discharged from the tar storage tank 630 are stored include

At this time, in the oil mist storage tank 610, the gas contained in the oil-mist is naturally separated, and the separated gas is supplied to the burner 500 of the gas power plant (GPP) to be used as fuel.

In addition, the water separated in the oil water separator 620 is used as process water and can be used where water treatment such as cooling water is required in the system according to the present invention.

In addition, in the present invention, it is preferable to further form a protective coating layer on the inner walls of the tar storage tank 350 and the tar storage tank 630 in which tar is stored to enhance corrosion resistance and contamination resistance.

At this time, the paint coating layer is based on 100 parts by weight of polycarbonate resin, 20 parts by weight of silicon alkoxide mixture, 15 parts by weight of TCPP (Tris 2-chloropropyl phosphate), 10 parts by weight of 1,2-hexanediol, 6-bromohexanoic acid It is formed by applying a coating solution in which 10 parts by weight of (6-bromohexanoic acid), 5 parts by weight of borosilicate glass, and 5 parts by weight of polyamide amine are mixed.

Here, the silicon alkoxide mixture is made by adding 20 g of titanium butoxide and 2 g of nitric acid to 100 ml of a mixture of water and TMOS (Tetramethylorthosilicate) in a weight ratio of 4: 1 and stirring, and when applied to the surface of an adherend, the surface contact angle Significantly increases the self-cleaning property that acts in the direction of eliminating the adhesion when foreign matter is attached and makes the foreign matter fall off on its own. Therefore, the phenomenon of tar contamination of the inner wall surface is minimized.

In addition, TCPP is added to maintain longevity of the painted surface without causing cracks or fractures by lowering fatigue.

In addition, 1,2-hexanediol is an organic compound with an alcohol group and has both hydrophobicity and hydrophilicity, so it can be activated at the interface, reducing slump loss on the painted surface.

In addition, 6-bromohexanoic acid is added to prevent deterioration by preventing moisture penetration of oxygen and preventing cracks and fractures of the painted surface. That is, water pressure resistance and heat resistance are simultaneously enhanced.

In addition, borosilicate glass has excellent thermal shock resistance and excellent chemical durability, leading to long life of the painted surface.

And, polyamide-amine is added to further enhance heat resistance and cold resistance.

As such, the system according to the present invention does not dispose of gas and tar generated when semi-coke is produced by low-temperature pyrolysis of bituminous coal, but smoothly separates and collects them to be recycled as another energy source, thereby increasing processing efficiency. It has an improved effect so that it can increase and acquire additional energy sources.

100: storage hopper
200: electric reaction tank
300: cooling reaction tank
400: supply hopper
500: burner
600: separator

Claims (2)

A semi-coke maker (SCM) that receives bituminous coal and makes it into semi-cokes, a product molding machine (BQM) that receives the semi-coke produced in the semi-coke maker (SCM) and molds it into a product, and the semi-coke maker ( A gas power plant (GPP) that introduces and burns the pyrolysis gas generated in the SCM) and obtains thermal energy and electrical energy using the heat and combustion gas generated during combustion, and the tar generated in the semi-coke maker (SCM). In the treatment system capable of separating gas and tar when producing semi-coke from bituminous coal, including a tar separator (TRS) for separating tar and water;
The semi-coke maker (SCM) includes a storage hopper 100 for storing and ejecting bituminous coal, an electric reaction tank 200 for thermally decomposing bituminous coal ejected and transported from the storage hopper 100, and thermal decomposition in the electric reaction tank 200. It includes a cooling reaction tank 300 that collects gas and oil vapor to separate tar and moisture;
The product molding machine (BQM) includes a supply hopper 400 for supplying bituminous coal that has been heated and cooled from the semi-coke maker (SCM) and transported, and a mixer for mixing and stirring bituminous coal input from the supply hopper 400, water, and a hardener. 410, a water supplier 420 for supplying water to the mixer 410, a curing agent injector 430 for injecting a curing agent into the mixer 410, and the raw material supplied from the mixer 410 as a product It includes a molding machine 440 to make a shape, and a packaging machine 450 to package the molded product;
The gas power plant (GPP) includes a burner 500 for igniting pyrolysis gas, a gas combustion chamber 510 in which flames attached by the burner 500 are burned, and exhaust gas generated during combustion in the gas combustion chamber 510 An economizer 520 that partially recovers waste heat, a condensing turbine 530 that is rotated by the discharge pressure of the exhaust gas generated during combustion in the gas combustion chamber 510, and connected to the condensing turbine 530 to produce electricity The generator 540, the air-cooled condenser 550 that processes the exhaust gas discharged from the condensing turbine 530 and discharges it into the atmosphere, and the exhaust gas that has passed through the economizer 520 is sucked in and discharged into the atmosphere through a chimney. It includes a discharge fan 560 to;
The tar separator (TRS) receives the tar mixture separated from the cooling reaction tank 300 and stored in the tar storage tank 350 and separates the tar-oil-mist into a separator 600 and the oil separated in the separator 600 In the oil mist storage tank 610 in which mist is stored, the oil water separator 620 for separating oil and water from the remaining oil after gas is separated in the oil mist storage tank 610, and the separator 600 A tar storage tank 630 in which the separated tar is accommodated, and a tar drum filling tank 640 in which the remaining oil separated from the oil-water separator 620 and the tar discharged from the tar storage tank 630 are stored but;
The electric reaction tank 200 includes a plurality of microwaves 210, a plurality of heat transfer plates 220 for preheating the heat generated from the microwaves 210, and screws arranged in the longitudinal direction inside the electric reaction tank 200. The feeder 230, the partition wall 240 partitioning the inside of the electric reactor 200 into a total of 5 sections in a longitudinal direction, and the temperature of the space partitioned by the partition wall 240 is measured. A processing system capable of separating gas and tar when producing semi-coke from bituminous coal, characterized in that it includes a detection sensor 250 and an inspection port 260 for checking the inside and for maintenance. delete

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