KR102237280B1 - Waste pre-treatment in-line system for continuous in-put of combustible wastes as substitution fuel in cement calcination facilities - Google Patents

Abstract

The present invention relates to a waste pretreatment inline system for continuous input of waste alternative fuel in a cement firing process, and more particularly, to a waste pretreatment inline system for continuous input of waste alternative fuel in a cement firing process, which, by classifying combustible wastes used as alternative fuels in the cement firing process by type, performs uniform pretreatment of incineration standards, and through continuous and sustainable dosing into cement calciners or rotary kilns, is designed to be suitable for stable operation of the cement firing process.

Description

Waste pre-treatment in-line system for continuous in-put of combustible wastes as substitution fuel in cement calcination facilities}

The present invention relates to a waste pretreatment in-line system for continuous injection of waste alternative fuel in a cement sintering process, and more particularly, to uniformly classify combustible wastes used as alternative fuels in the cement sintering process according to types and uniform incineration standards. Waste pretreatment in-line system for continuous injection of waste alternative fuel from cement calcination process, suitable for operation of stable cement calcination process by pre-treatment and continuous and sustainable input into cement calciner and/or rotary kiln It is about.

In general, the cement manufacturing process is manufactured through a sequential process including a mining process, a crushing process, a mixing process, a raw material grinding process, a sintering process, and a crushing process.

At this time, the above mining process is an exaggeration of mining buried limestone, which is a raw material for cement, and the limestone buried in the Donghae region of Gangwon-do has been recognized worldwide for its quality and is one of the most abundant resources in Korea. Limestone goes through a crushing process that breaks up limestone lumps.

In the crushing process, the mined limestone is crushed to the size of chestnuts with a diameter of 2.5 cm or less while going through the crushing process three times.

The mixing process is a process for evenly mixing the limestone mined in different regions with the limestone after the crushing process to make the composition of the cement even and the quality of the cement uniform.At this time, the limestone whose composition is uniform by mixing CaCO ₃ , After mixing with sub-materials such as SiO ₂ and Al ₂ O ₃ in a certain ratio, it is sent to a raw material grinder that is crushed finely.

In the raw material pulverization process, the mixed raw material is pulverized into a fine powder state and then stored in a silo.

The firing process is a process of making the powdered raw material into a cement semi-finished clinker through various physical and chemical reactions by heating the powdered raw material at high temperature at about 700 to 2,000°C in a large rotary kiln.

In the pulverizing process, the high-temperature clinker is cooled, and gypsum is added to pulverize the cement product.

Among the cement manufacturing process, in particular, in the firing process, a preheating process is performed.That is, the reduction in fuel cost, which accounts for about 30% of the cement manufacturing cost, is a reduction in the cement cost, so all current cement manufacturing processes are calcined for the preheating process. A furnace is employed, and the preheating process is performed by flowing high-temperature gas generated by a burner of a rotary kiln into the lower portion of the calciner.

Here, looking at the heat flow of the rotary kiln and the calciner, after combustion in the burner at the lower end of the rotary kiln, the generated high-temperature exhaust gas flows to the bottom of the calciner. , The high-temperature gas that has flowed is heated up to about 850° C. while rising by its own lifting force and the suction force of the induction ventilator, and the powdered raw material dropped from the top of the calciner is heated to about 850° C., and the rotary kiln passes through the calciner. The high-temperature powder raw material in (Rotary Kiln) gets hotter as it goes down as the inclined rotary kiln rotates, and when it reaches the bottom, clinker, a semi-finished cement product of about 1,450℃, is created.

At this time, the high-temperature clinker undergoes an air cooling process, and since the air cooled the clinker is heated to about 850°C, this air flows back into the bottom of the calciner.

In addition, in the calciner, in addition to the high air of a rotary kiln, bituminous coal is usually added as a heating fuel to generate high-temperature combustion heat, but in addition to this, LPG, bunker C oil, WDF, waste oil, waste synthetic resin , Combustible waste and/or sewage sludge, waste tire chips, urethane powder, and the like are used as fuels, and in recent years, in particular, many technologies using combustible wastes such as waste synthetic resins have been developed.

Conventionally, looking at the cement manufacturing facility using combustible waste, Korean Patent Registration 10-0343115 (registration date June 21, 2002) describes a solid waste storage facility 11, a mixing facility 13, and a crusher 15. , A screen 16, an input hopper 22, a calciner 25, and a rotary kiln 29, and the waste mixing facility 13 is a hopper 31 for inputting waste by type, and a belt conveyor 32 ), and a combustible solid waste consisting of a hopper 33 for inputting a mixture of solid waste as a cement manufacturing process, at least two selected from the group consisting of waste synthetic rubber, waste synthetic resin, waste synthetic fiber, waste paper, and waste wood. After the solid waste is sorted and laid out for each type, it is mixed in the mixing facility 13 in consideration of the calorific value and the chlorine content of each, but the upper solid waste from the storage facility 11 through a specific loader, tong truck, or belt conveyor 12. Is stored in the input hopper 31 of the input hopper 31, and solid wastes are stored in the mixed input hopper 33 according to the characteristic mixing ratio through the speed adjustment of the feeder at the bottom of the input hopper 31, and the biaxial shear crusher 15 ) To exist as the desired solid waste mixture 20, and the waste 17 with coarse particles is caught through the screen 16 and returned to the mixing facility 13, and the solid waste mixture 20 A technical configuration is known in which the silver calcination furnace 25 and the raw material chute of the lowermost cyclone 24 of the preheating chamber are introduced.

In addition, Korean Patent Registration 10-0492810 (registration date May 24, 2005) includes the steps of selecting and drying combustible landfill wastes among wastes generated during landfill restoration or reorganization; Compressing the dried combustible landfill waste at room temperature; Storing the compressed combustible landfill waste in a storage; And quantitatively supplying the stored combustible landfill waste to the calciner of the cement factory or to the inlet of the kiln by a pneumatic transport, wherein the compressed combustible landfill waste is crushed to a size of 5 to 30 cm or packed with a weight of 500 kg or less. It is known a method of using a combustible waste as an auxiliary fuel in cement production comprising the step of.

In addition, in Korean Patent Registration 10-1228419 (registration date January 25, 2013), cement raw meal is preheated in a preheater system 1 equipped with a calciner 3 and clinker of the kiln 5 A method of incineration of combustible waste during the manufacture of a cement clinker that is burned in and cooled in a subsequent clinker cooler (7), wherein the waste is introduced through a waste inlet (11) and into a separate compartment (9). Supported on an integrated support surface 21, the waste is actively transported and at the same time incinerated through the compartment to its outlet 23, and some or all of the waste incineration in the compartment is sub-stoichiometric. The high-temperature exhaust gas generated in connection with the incineration of the waste is supplied to the preheater system for heating the cement raw material powder, and the slag generated during the waste incineration process is discharged from the compartment 9, and the exhaust gas Is treated with sub-stoichiometric NOx reduction conditions in the pyrolysis zone 19, and the unburned char on the effluent from the compartment 9 is captured by the effluent gas from the kiln 5, So that the char is burned upon reaction with oxygen in the exhaust gas from the kiln (5),-the compartment (9) is located between the calcination furnace (3) and the kiln (5),-the exhaust gas from the kiln (5) is It is introduced into the compartment (9) through a riser duct (6),-the exhaust gas from the compartment (9) is introduced into the calciner (3) through the riser duct (4),-the compartment (9) is Comprising a combustion zone 18 and a pyrolysis zone 19 comprising the outlet end of the duct 6 and the compartment 9,-the exhaust gas from the kiln 5, containing NOx, flows back to the waste stream A method is known, characterized in that it is introduced into and through the furnace compartment 9.

In addition, Korean Patent Registration 10-1497847 (registration date February 24, 2015) is a waste treatment facility installed adjacent to a cement manufacturing facility equipped with a cement cracking furnace and a sintering furnace. A furnace, and a gas transport passage for transporting the pyrolysis gas generated in the gasification furnace to the cement cracking furnace while containing charcoal and ash, and a flow rate of the pyrolysis gas transported from the gasification furnace to the cement cracking furnace, A waste treatment facility is known, characterized in that it is limited to a flow rate of 03 or less with respect to the flow rate of waste gas discharged from the cement cracking furnace.

In addition, in Korean Patent Laid-Open Publication No. 10-2020-0025021 (published date March 10, 2020), a calciner that preheats the cement raw material supplied from the raw material feeder and increases the decarboxylation reaction in which carbon dioxide in the cement raw material is released. ) A preheater system comprising; And receiving the cement raw material that has passed through the preheater system through the raw material injection chamber through the raw material injection chamber, firing it with a clinker, and carrying it out to the discharge port, and generating a flame in the direction of the inlet port from a burner provided at a position opposite to the inlet port for the firing. As a local high-temperature combustion chamber employed in a cement sintering facility including a rotary kiln, an inlet through which organic waste and fuel using the same are introduced is formed, and in the process of gasification by combustion and pyrolysis of the fuel introduced therein. A hollow body having an outlet through which generated heat and gas are withdrawn, and an outlet through which the fuel is burned and pyrolyzed to gasify and the remaining ash is discharged; And a plasma torch which is provided in plural and is disposed along the outer surface of the body and along the longitudinal direction, and is installed through the body so that the flame faces the inside of the body, wherein the body is calcined of the preheater system. It is characterized in that it is connected to at least one of the raw material injection chamber of the furnace and the rotary kiln so that heat and gas generated by combustion and pyrolysis of the fuel and gasification therein are moved to at least one of the calcination furnace and the raw material injection chamber. Localized high temperature combustion chambers are known.

However, combustible wastes used in conventional cement facilities that use the waste as a preheating material are not classified according to their type, or cannot be incinerated if they do not meet the incineration standards. There was a fatal problem that the process was stopped if it was not put into the preheating process.

In particular, the Korean Patent Registration No. 10-1497847 and Korean Patent Laid-Open Patent No. 10-2020-0025021 have a problem with unnecessary facilities that require a separate gasification furnace or a high-temperature combustion chamber for supplying high-temperature gas to the calcination furnace by gasifying waste. .

There are known pretreatment technologies for combustible wastes developed to solve the problems of using the above wastes. In Korean Patent Registration 10-1225015 (registration date January 16, 2013), it can be burned from randomly collected wastes. In order to separate the waste into existing waste and pretreat it into waste that can be incinerated in the incinerator of the incinerator, the process of cutting the waste that cannot be cut with the saws 19a and 19b of the cutting device 11 and flowing into the hopper 25a The process of cutting waste vinyl, waste cloth, waste clothes, waste bags, waste nets, etc. with the cutting device 12, and using the shredding device 13 to easily sort the solids flowing into the hopper 25b from among wastes. The process of crushing, cutting, cutting, and crushed wastes (21a, 21b, 21c) moving the conveyors (18a, 18b)) and passing through the magnetic sorting device 14, the process of sorting ferrous metals, and iron When the wastes (21a, 21b, 21c) from which the metals are sorted are insufficient in the capacity to supply the waste in a quantitative quantity, a conveyor 18b with the waste 21d flowing into a separate hopper 25c is used to quantify the waste. The process of quantitatively supplying the wastes (21a, 21b, 21c, 21d), the process of separating the waste by vibrating the wastes (21a, 21b, 21c, 21d) supplied in a quantity with a vibration device 16, and the separated waste (21a, 21b, 21c, 21d) is introduced into the trommel 17, and a method of pretreatment of incineration waste, characterized in that it consists of a process of separating foreign substances and the like by centrifugal force caused by the rotation of the trommel 17, is known. have.

In addition, Korean Patent Registration No. 10-1071746 (registration date October 4, 2011) discloses a solid fuel manufacturing apparatus for producing solid fuel by sorting and crushing soluble waste, drying it, and then molding it. A dryer for drying and discharging it with a heat source supplied from the outside; A combustor that receives and combusts some of the dried soluble waste discharged from the dryer and supplies the high-temperature exhaust gas generated by combustion to the heat source of the dryer, and receives a part of the exhaust gas discharged from the dryer to use as combustion air; A condensing tank for removing moisture from the exhaust gas supplied from the dryer to the combustor; A semi-dry reactor in which the rest of the exhaust gas discharged from the dryer is supplied, the catalyst mixed with the slaked lime slurry is injected from the outside through high-pressure air, sprayed by a spray nozzle, and mixed with the exhaust gas to remove acid gas and nitrogen oxides ; And a filter bag that receives exhaust gas discharged from the semi-dry reactor and removes air pollutants contained in the exhaust gas.

In addition, Korean Patent Registration No. 10-1091118 (registration date December 1, 2011) includes a household waste storage tank (A) in which household wastes having a relatively small volume are stored; A large-sized waste storage tank (B) in which large-sized combustible wastes having a relatively large volume are stored; A large-sized waste crusher (C) for shredding the large-sized combustible waste stored in the large-sized waste storage tank (B) and storing it in the household waste storage tank (A); A primary waste crusher (E) for shredding the household waste stored in the household waste storage tank (A); A secondary waste shredder (F) for crushing the primary shredded material discharged from the primary waste shredder (E) to a smaller second; A primary magnetic separator (G) for removing ferrous metals from the crushed material discharged from the secondary waste crusher (F); A particle size sorting device (H) for sorting only crushed products of a certain size or more among crushed products discharged from the primary magnetic separator (G); A near-infrared optical sorting device (I) for removing PVC from the crushed material discharged from the particle size sorting device (H); A crushed material storage hopper (J) for storing crushed material discharged from the near-infrared optical sorting unit (I); A pulverizer (K) for pulverizing the crushed material stored in the crushed material storage hopper (J) into fine particles; A dryer (L) for drying the pulverized pulverized material discharged from the pulverizer (K); A primary wind power separator (M) for separating a non-combustible material having a relatively large specific gravity among the dried pulverized material discharged from the dryer (L) using wind power; A secondary wind power sorter (N) for sorting combustibles having a relatively small specific gravity among non-combustibles discharged from the primary wind power sorter (M) using wind power; A secondary magnetic separator (O) for removing ferrous metals from the pulverized material discharged from the primary and secondary wind power separators (M, N); A non-ferrous metal separator (P) for removing non-ferrous metals from the pulverized material discharged from the secondary magnetic separator (O); A pulverized material storage hopper (Q) for storing pulverized material discharged from the non-ferrous metal sorting unit (P); A molding facility (R) for molding the pulverized material stored in the pulverized material storage hopper (Q) into solid fuel; And a heat source for supplying a heat source to the dryer L and treating exhaust gas discharged from the dryer L, and a gas treatment facility unit S. A waste pretreatment apparatus for solid fuel is known.

In addition, in the Korean Patent Registration 10-2120470 (registration date June 2, 2020), in the pretreatment system for recycling plastic and vinyl waste, a plurality of inlets 11 into which plastic and vinyl waste are input by type and size, A sorting unit (1) having a hermetic lid (12) for opening and closing the inlet (11) and a plurality of first chambers (13) connected to each inlet (11); A cutting unit (2) having a cutter (21) for cutting the waste inside the first chamber (13) into a set size, and a discharge means (22) for discharging the cut waste by pushing it to one side; A second chamber 31 for collecting and receiving waste discharged through the cutting unit 2, a supply unit 32 and a discharge unit 33 for supplying and discharging a cleaning solution to the second chamber 31, and the A cleaning unit (3) having a circulation unit (34) provided with a first filter unit (36) for circulating the cleaning solution in the second chamber (31) and filtering the circulated cleaning solution; A third chamber 41 to receive the waste cleaned by the cleaning unit 3, a heating unit 42 for heating and drying the third chamber 41 at a set temperature, and a sterilization lamp for sterilization through ultraviolet rays. Disinfection unit 4 having (43); Through the air supply unit 51 and the exhaust unit 52 for supplying and discharging outside air to the first chamber 13, the second chamber 31 and the third chamber 41, respectively, and the exhaust unit 52 A filtering unit 5 having a second filter unit 53 for disinfecting and deodorizing the exhausted air; Based on the gas sensor, the first sensor unit 61 for sensing odor components inside the first chamber 13, the second chamber 31, and the third chamber 41, and the second chamber 31 It has a second sensor unit 62 that detects foreign substances in the circulating cleaning liquid, monitors the measurement results of the first sensor unit 61 and the second sensor unit 62, and monitors the cutter 21 and the discharging means ( 22) and a control unit 6 for controlling the cleaning unit 3 and the disinfecting unit 4; A pretreatment system for waste recycling, characterized in that consisting of, is known.

However, the incineration waste pretreatment method of the Korean Patent Registration No. 10-1225015 is a general pretreatment that undergoes separation of iron and metal by magnetic separation, separation of foreign substances by trommel, etc. in order to separate from randomly collected waste into combustible waste. As a method, there is a problem that it cannot be used as combustible waste in the preheating process, which is not classified according to the type of waste and does not have a certain incineration standard, so that the incineration standard is uniform in large quantities and can be continuously supplied.

In addition, Korean Patent No. 10-1071746 and Korean Patent No. 10-1091118 manufacture solid fuel by sorting and crushing soluble waste, removing moisture, drying, and then molding, or producing solid fuel from household waste with a relatively small volume. Although it is intended to pretreat combustible waste, it cannot be used as a fuel for the cement preheating process.

In addition, Korean Patent Registration No. 10-2120470 is not used as a combustible waste fuel, but as a pretreatment system for recycling and does not suggest a pretreatment process for combustible waste for the purpose of the present invention.

[Patent Document 001] Korean Patent Registration 10-0343115 (Registration Date June 21, 2002) [Patent Document 002] Korean Patent Registration 10-0492810 (Registration Date May 24, 2005) [Patent Document 003] Korean Patent Registered 10-1228419 (Registration Date January 25, 2013) [Patent Document 004] Korean Patent Registration 10-1497847 (Registration Date February 24, 2015) [Patent Document 005] Korean Patent Publication 10-2020-0025021 (Publication date March 10, 2020) [Patent Document 006] Korean Patent Registered 10-1225015 (Registration Date January 16, 2013) [Patent Document 007] Korean Patent Registration 10-1071746 (Registration Date Oct. 4, 2011) [Patent Document 008] Korean Patent Registration 10-1091118 (Registration Date December 1, 2011) [Patent Document 009] Korean Patent Registration 10-2120470 (Registration Date June 2, 2020)

In order to solve the above conventional problems, the present invention divides combustible wastes used as alternative fuels in the cement sintering process according to types and uniformly pretreatment of incineration standards to be used in a cement calciner or rotary kiln. It is a task to solve the problem of providing a waste pretreatment in-line system for continuous injection of waste alternative fuel in cement sintering process, which is suitable for the operation of stable cement sintering process by continuously and sustainably inputting it.

In order to solve the above problems, the present invention includes: a combustible hard waste input unit including waste synthetic resins, waste tires, waste rubber and household wastes; Consisting of; a combustible soft waste input unit including waste vinyls and waste fibers, wherein the combustible hard waste input unit includes a light quantitative input device for quantitatively inputting the combustible hard waste; A first belt conveyor for transporting the combustible hard waste inputted from the hard weighing device; A homogenizing hopper for homogenizing and storing the combustible hard waste conveyed by the first belt conveyor; A hard quantitative supply device comprising a belt feeder or a screw feeder to quantitatively supply the combustible hard waste homogenized from the homogenizing hopper; A second belt conveyor for transporting the homogenized combustible hard waste input from the light weight supply device; When the homogenized combustible hard waste transferred by the second belt conveyor is introduced into the calciner, a rotary valve or a sliding gate is provided to block external air. A first shredder configured to crush combustible soft wastes having a length of 300 mm or less to a length of 100 mmm or less; A second crusher for crushing combustible soft wastes having a length of more than 300 mm to a length of 30 mm or less; A magnetic separator for separating and discharging metals and foreign substances contained in the combustible soft waste crushed in the first crusher; A third crusher for crushing the combustible soft waste from which metals and foreign substances are separated by the magnetic separator to a length of 30 mm or less; A first wind separator for sorting combustible soft wastes having a specific gravity of 0.5 g/cm ^{3 or less among combustible soft wastes crushed in the third crusher;} A pipe conveyor for transporting the combustible soft waste selected from the first wind turbine separator; A homogenizing silo for homogenizing and storing the combustible soft waste conveyed by the pipe conveyor; A soft quantitative supply device comprising a rotary feeder or a screw feeder to quantitatively supply the combustible soft waste homogenized from the homogenizing silo; An air conveyor comprising a blower or a compressor to transport the homogenized combustible soft waste input from the soft quantitative supply device; Cement comprising a spray nozzle for spraying the homogenized combustible soft waste transferred by the air conveyor into a calciner and/or a rotary kiln. The waste pretreatment in-line system for continuous injection of waste alternative fuel in the firing process is used as a solution to the problem.

The combustible soft waste crushed in the second crusher with a length of 30 mm or less is configured to be fed into the first wind separator together with the combustible soft waste crushed in the third crusher with a length of 30 mm or less.

The combustible hard waste input unit is configured to input only the combustible hard waste having a length of 50 mm or less and a non-combustible ash content of 10 wt% or less to the light quantitative input device as a means of solving the problem.

In the combustible soft waste input unit, the combustible soft waste in which 10 wt% or more of foreign matter is mixed in the combustible soft waste exceeding 300 mm in length is introduced into the hard metering device, and the combustible soft waste in which less than 10 wt% foreign matter is mixed is described above. It is configured to be put into the second crusher as a means of solving the problem.

As a means of solving the problem, combustible soft wastes exceeding 30 mm in length among the combustible soft wastes crushed in the second crusher are configured to be introduced into the hard metering device.

Between the magnetic separator of the combustible soft waste input unit and the third crusher, it is a task to configure a second wind power separator for sorting ^{combustible soft wastes having a specific gravity of 0.5 g/cm 3 or less among combustible soft wastes selected by the magnetic separator.} As a solution to

^{It is a solution to the problem that the combustible soft waste whose specific gravity exceeds 0.5 g/cm 3} among the combustible soft wastes selected by the first wind sorter and the second wind sorter is configured to be fed into the hard metering device.

The waste pretreatment in-line system for continuous injection of waste alternative fuel in the cement sintering process of the present invention divides combustible wastes used as alternative fuels in the cement sintering process according to type and uniformly pre-treat the incineration standards to make a cement calciner or It has an excellent effect on the operation of a stable cement firing process by continuously and sustainably inputting it into a rotary kiln.

1 is a block diagram of a waste pretreatment in-line system for continuous injection of alternative waste fuel in the cement firing process of the present invention
Figure 2 is a schematic diagram of a calcination furnace or rotary kiln of a waste pretreatment in-line system for continuous injection of waste alternative fuel in the cement firing process of the present invention.

The present invention comprises: a combustible hard waste input unit including waste synthetic resins, waste tires, waste rubber, and household waste; Consisting of; a combustible soft waste input unit including waste vinyls and waste fibers, wherein the combustible hard waste input unit includes a light quantitative input device for quantitatively inputting the combustible hard waste; A first belt conveyor for transporting the combustible hard waste inputted from the hard weighing device; A homogenizing hopper for homogenizing and storing the combustible hard waste conveyed by the first belt conveyor; A hard quantitative supply device comprising a belt feeder or a screw feeder to quantitatively supply the combustible hard waste homogenized from the homogenizing hopper; A second belt conveyor for transporting the homogenized combustible hard waste input from the light weight supply device; When the homogenized combustible hard waste transferred by the second belt conveyor is introduced into the calciner, a rotary valve or a sliding gate is provided to block external air. A first shredder configured to include, and the combustible soft waste input unit crushing combustible soft waste having a length of 300 mm or less to a length of 100 mmm or less; A second crusher for crushing combustible soft wastes having a length of more than 300 mm to a length of 30 mm or less; A magnetic separator for separating and discharging metals and foreign substances contained in the combustible soft waste crushed in the first crusher; A third crusher for crushing the combustible soft waste from which metals and foreign substances are separated by the magnetic separator to a length of 30 mm or less; A first wind separator for sorting combustible soft wastes having a specific gravity of 0.5 g/cm ^{3 or less among combustible soft wastes crushed in the third crusher;} A pipe conveyor for transporting the combustible soft waste selected from the first wind turbine separator; A homogenizing silo for homogenizing and storing the combustible soft waste conveyed by the pipe conveyor; A soft quantitative supply device comprising a rotary feeder or a screw feeder to quantitatively supply the combustible soft waste homogenized from the homogenizing silo; An air conveyor comprising a blower or a compressor to transport the homogenized combustible soft waste input from the soft quantitative supply device; Cement comprising a spray nozzle for spraying the homogenized combustible soft waste transferred by the air conveyor into a calciner and/or a rotary kiln. It features a waste pretreatment in-line system for continuous input of waste alternative fuel in the firing process as a feature of the technology configuration.

The technical configuration is characterized in that the combustible soft waste crushed in the second crusher with a length of 30 mm or less is configured to be fed into the first wind separator together with the combustible soft waste crushed in the third crusher with a length of 30 mm or less.

The technical configuration is characterized in that the combustible hard waste input unit is configured so that only combustible hard wastes having a length of 50 mm or less and a non-combustible ash content of 10 wt% or less are introduced into the hard weighing device.

In the combustible soft waste input unit, the combustible soft waste in which 10 wt% or more of foreign matter is mixed in the combustible soft waste exceeding 300 mm in length is introduced into the hard metering device, and the combustible soft waste in which less than 10 wt% foreign matter is mixed is described above. It is a feature of the technical configuration that is configured to be introduced into the second crusher.

A characteristic feature of the technology is that the flammable soft wastes exceeding 30 mm in length among the combustible soft wastes crushed in the second crusher are configured to be introduced into the hard metering device.

A technology to configure a second wind power separator for sorting ^{combustible soft wastes having a specific gravity of 0.5 g/cm 3} or less among combustible soft wastes selected by the magnetic separator between the magnetic separator of the combustible soft waste input unit and the third crusher. It is characterized by the composition.

^{A characteristic feature of the technology is that the combustible soft waste whose specific gravity exceeds 0.5g/cm 3} among the combustible soft wastes selected by the first wind turbine sorter and the second wind turbine sorter is configured to be introduced into the hard fixed-quantity injection device.

Hereinafter, embodiments of the present invention and/or drawings will be described in detail so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms, and is not limited to the embodiments and/or drawings described herein.

Referring to [Fig. 1] to [Fig. 2], the waste pretreatment in-line system for continuous injection of waste alternative fuel in the cement firing process of the present invention includes waste synthetic resins, waste tires, waste rubber, and household waste. A combustible hard waste input unit 100; Consisting of: a combustible soft waste input unit 200 including waste vinyl and waste fibers, wherein the combustible hard waste input unit 100 includes a light quantitative input device 110 for quantitatively inputting the combustible hard waste; A first belt conveyor 120 for transporting the combustible hard waste input from the hard weighing device 110; A homogenizing hopper 130 for homogenizing and storing the combustible hard waste conveyed by the first belt conveyor 120; Hard quantitative supply device 140 comprising a belt feeder or a screw feeder to quantitatively supply the combustible hard waste homogenized from the homogenizing hopper 130; A second belt conveyor 150 for transporting the homogenized combustible hard waste input from the light weight supply device 140; When the homogenized combustible hard waste conveyed by the second belt conveyor 150 is introduced into the calciner 170, a rotary valve or a A first shredder for crushing combustible soft wastes having a length of 300 mm or less to a length of 100 mmm or less, and configured to include, and the combustible soft waste input unit 200 consisting of a sliding gate (210) and; A second crusher 220 for crushing combustible soft wastes exceeding 300 mm in length to a length of 30 mm or less; A magnetic separator 230 for separating and discharging metals and foreign substances contained in the combustible soft waste crushed in the first crusher; A third shredder 240 for shredding combustible soft waste from which metals and foreign substances are separated by the magnetic separator 230 to a length of 30 mm or less; A first wind sorter 250 for sorting combustible soft wastes having a specific gravity of 0.5 g/cm ^{3 or less among the combustible soft wastes crushed in the third crusher 240;} A pipe conveyor for transporting the combustible soft waste selected from the first wind turbine separator 250; A homogenizing silo 270 for homogenizing and storing the combustible soft waste conveyed by the pipe conveyor 260; A soft quantitative feeder 280 comprising a rotary feeder or a screw feeder to quantitatively supply the combustible soft waste homogenized from the homogenizing silo; An air conveyor 290 composed of a blower or a compressor to transport the homogenized combustible soft waste input from the soft quantitative supply device 280; A spray nozzle for spraying the homogenized combustible soft waste transferred by the air conveyor 290 into the calciner 170 and/or the rotary kiln 310 nozzle) (300); is configured to include.

At this time, the combustible soft waste of a length of 30 mm or less crushed by the second crusher 220 together with the combustible soft waste of a length of 30 mm or less crushed by the third crusher (240) to be put into the first wind power sorter (250). It is composed.

In addition, the combustible hard waste input unit 100 is configured so that only combustible hard wastes having a length of 50 mm or less and a non-combustible ash content of 10 wt% or less are introduced into the light quantitative injection device 110.

In addition, in the combustible soft waste input unit 200, the combustible soft waste in which 10wt% or more of foreign matters are mixed among combustible soft wastes exceeding 300mm in length is introduced into the hard quantitative feeder 110, and is less than 10wt% foreign matter. The mixed combustible soft waste is configured to be introduced into the second crusher 220.

In addition, of the combustible soft waste crushed by the second crusher 220, the combustible soft waste exceeding 30 mm in length is configured to be introduced into the hard weighing device 110.

In addition, between the magnetic separator 230 and the third crusher 240 of the combustible soft waste input unit 200, the specific gravity of the combustible soft wastes selected by the magnetic separator 230 is 0.5 g/cm ³ or less. A second wind power sorter 320 is configured for sorting soft waste.

At this time, combustible soft wastes having a specific gravity of more than 0.5 g/cm ³ among the combustible soft wastes selected by the first wind sorter 250 and the second wind sorter 320 are put into the hard quantitative input device 110. It is composed.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments and/or drawings disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and/or drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: combustible hard waste input unit 110: light quantitative input device
120: first belt conveyor 130: homogenization hopper
140: rigid quantitative supply device 150: the second belt conveyor
160: external air inflow blocking device 170: calciner
200: combustible soft waste input unit 210: first crusher
220: second crusher 230: magnetic separator
240: 3rd crusher 250: 1st wind sorter
260: pipe conveyor 270: homogenization silo
280: soft quantitative supply device 290: air conveyor
300: spray nozzle 310: rotary kiln
320: second wind power sorter

Claims (7)

A combustible hard waste input unit including waste synthetic resins, waste tires, waste rubber, and household wastes; Consisting of; a combustible soft waste input unit including waste vinyls and waste fibers, wherein the combustible hard waste input unit includes a light quantitative input device for quantitatively inputting the combustible hard waste; A first belt conveyor for transporting the combustible hard waste inputted from the hard weighing device; A homogenizing hopper for homogenizing and storing the combustible hard waste conveyed by the first belt conveyor; A hard quantitative supply device comprising a belt feeder or a screw feeder to quantitatively supply the combustible hard waste homogenized from the homogenizing hopper; A second belt conveyor for transporting the homogenized combustible hard waste input from the light weight supply device; When the homogenized combustible hard waste transferred by the second belt conveyor is introduced into the calciner, a rotary valve or a sliding gate is provided to block external air. A first shredder configured to crush combustible soft wastes having a length of 300 mm or less to a length of 100 mmm or less; A second crusher for crushing combustible soft wastes having a length of more than 300 mm to a length of 30 mm or less; A magnetic separator for separating and discharging metals and foreign substances contained in the combustible soft waste crushed in the first crusher; A third crusher for crushing the combustible soft waste from which metals and foreign substances are separated by the magnetic separator to a length of 30 mm or less; A first wind separator for sorting combustible soft wastes having a specific gravity of 0.5 g/cm ^{3 or less among combustible soft wastes crushed in the third crusher;} A pipe conveyor for transporting the combustible soft waste selected from the first wind turbine separator; A homogenizing silo for homogenizing and storing the combustible soft waste conveyed by the pipe conveyor; A soft quantitative supply device comprising a rotary feeder or a screw feeder to quantitatively supply the combustible soft waste homogenized from the homogenizing silo; An air conveyor comprising a blower or a compressor to transport the homogenized combustible soft waste input from the soft quantitative supply device; And a spray nozzle for spraying the homogenized combustible soft waste transferred by the air conveyor into a calciner and/or a rotary kiln,
The waste alternative fuel of the cement sintering process, characterized in that the combustible soft waste crushed in the second crusher and having a length of 30 mm or less crushed in the third crusher and the combustible soft waste crushed in the third crusher and fed to the wind separator Waste pretreatment inline system for continuous input
delete The method of claim 1,
The combustible hard waste input unit is configured to input only combustible hard wastes having a length of 50 mm or less and non-combustible ash of 10 wt% or less into the light weighing device. system
The method of claim 1,
In the combustible soft waste input unit, the combustible soft waste in which 10 wt% or more of foreign matter is mixed in the combustible soft waste exceeding 300 mm in length is introduced into the hard metering device, and the combustible soft waste in which less than 10 wt% foreign matter is mixed is the Waste pretreatment in-line system for continuous input of alternative fuel for waste in cement sintering process, characterized in that it is configured to be fed into the second crusher
The method of claim 1,
A waste pretreatment in-line system for continuous injection of alternative fuel for waste in a cement sintering process, characterized in that the combustible soft waste exceeding 30 mm in length among the combustible soft waste crushed in the second crusher is configured to be fed into the light metering device.
The method of claim 1,
Between the magnetic separator of the combustible soft waste input unit and the third crusher, a second wind power separator for sorting ^{combustible soft wastes having a specific gravity of 0.5 g/cm 3 or less among the combustible soft wastes selected by the magnetic separator is configured.} Waste pretreatment in-line system for continuous input of alternative fuel to waste in cement firing process
The method of claim 6,
^{The waste of the cement firing process, characterized in that the combustible soft waste with a specific gravity exceeding 0.5 g/cm 3} among the combustible soft wastes selected by the first and second wind separators is configured to be introduced into the hard metering device. Waste pretreatment inline system for continuous input of alternative fuel

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