KR20110021548A - Moving disk type tube reactor having tandem hot gas generator - Google Patents

Abstract

PURPOSE: A disc transportable tube reactor including a tandem high temperature gas generator is provided to improve the processing capacitance of a waste tire chip by increasing the internal temperature of a heating tube. CONSTITUTION: A disc transportable tube reactor is divided into at least two heating spaces(112a, 112b) by partitions(111). Heating tubes(110) with inlets and outlets are arranged in each heating space. Opening holes connecting or blocking the heating spaces are installed on the partitions. A gas generator is in connection with the inlets and injects a heating gas into the heating spaces. An upper transporting tube passes through the longitudinal direction of the heating tube. A lower transporting tube passes through the longitudinal direction of the heating tube and includes an outlet through which carbon black is discharged.

Description

Disc Mobile Tube Reactor with Tandem Hot Gas Generator {MOVING DISK TYPE TUBE REACTOR HAVING TANDEM HOT GAS GENERATOR}

The present invention relates to a disk movable tube reactor equipped with a tandem hot gas generator, and more specifically, it is possible to continuously pyrolyze waste tire chips, and to improve heat transfer efficiency, pyrolysis reaction efficiency, and processing capacity through a tandem hot gas generator. And a disk movable tube reactor capable of preventing accumulation of pyrolysis residues.

Recently, the occurrence of waste plastics and waste tires or waste wood is rapidly increasing, but a process for efficiently treating them has not been developed, causing environmental pollution problems caused by them and making energy efficient.

Therefore, a process for reducing environmental pollution, increasing their treatment efficiency and increasing oil recovery by pyrolyzing waste plastics, waste tires and waste wood in the reactor has been proposed.

Pyrolysis can be converted to gas and oil and solid material components in the form of unit hydrocarbon compounds by cleaving the molecular structure of the waste organic matter under oxygen-free. In particular, in the case of pyrolysis of waste plastics, five general-purpose plastics include polyethylene (PE), polypropylene (PP), and polystyrene (PS), and polymethyl methacrylate (PMMA), which is widely used as an engineering plastic. Is mainly pyrolyzed for oil production.

Examples of pyrolysis of waste plastics were mainly in the Hamburg process in Germany, and other commercialization facilities include the recovery of wax components from waste plastic mixtures from BP UK and the recovery of oil from waste plastic mixtures from BASF, Germany.

In the UK BP, pyrolysis leads to approximately 80% oil conversion of wax components and an additional 10-15% gas is used as reactor heating material.

In the case of Germany BASF, the oil is recovered and immediately separated into two petrochemical processes through melting and cracking. However, due to economic problems, the plant is currently suspended.

In the case of waste tires, thermal decomposition of polyisoprene and synthetic rubber, which are main components, is mainly performed, and pyrolysis has been attempted to recover carbon black, which is an internal additive.

The pyrolysis process developed at the University of Hamburg, Germany, is a process of pyrolyzing barrel tires by fluidizing sand. At this time, the yield of oil and gas was 27% and 22%, respectively, and the yield of oil was lower and the yield of gas was higher than that of Kobe Steel Works.

7 is a diagram of a screw pyrolysis reactor for pyrolyzing materials such as conventional waste tires, waste plastics, and waste wood.

As shown in FIG. 7, the conventional screw pyrolysis reactor 10 introduces a material through a material inlet 14 for receiving a material such as waste tire, waste plastic, or waste wood, and mixes and stirs the mixed material with the introduced material. Oil is introduced from the oil inlet 15. Subsequently, when the driver 12 operates, the material and oil are thermally decomposed and smoothly agitated in the screw 22 installed to penetrate the inner cylinder 26 to pass through the screw pyrolysis reactor 10. At this time, the inner cylinder 26 is wound around the heating wire 20 to transfer the heat inside.

The precipitated and pyrolyzed material in the oil is discharged through the respective outlets 18, 16 and 19 in the form of oil vapor, oil and sludge and residues. That is, the oil vapor is discharged through the oil vapor outlet 18 and then divided into heavy oil and light oil through an oil condensation system (not shown), and stored within 10% of the supplied material and waste drifting. It is stored in a gas holder (not shown) and then sent to a hot stove (not shown) for use as fuel.

And oil and sludge is discharged through the oil and sludge outlet 16, the residue is discharged through the residue outlet (19). In order to efficiently discharge the oil vapor, the inner cylinder 26 and the screw 22 have a difference in diameter so that a space is formed in the upper part of the screw pyrolysis reactor 10.

By allowing the hot gas to be evenly transferred around the inner cylinder 26 by the spiral heating wire 20 surrounding the inner cylinder 26, the screw pyrolysis reactor 10 maintains an appropriate thermal decomposition reaction temperature of 380 to 400 ° C. At the same time, the strength of the inner cylinder 26 is increased.

However, the conventional screw pyrolysis reactor 10 takes a long time to reach a suitable pyrolysis reaction temperature of 380 ~ 400 ℃, it is not effective to maintain the temperature. Therefore, a substance (pyrolysis residue) remaining during pyrolysis is fixed to the inner wall of the inner cylinder 26 or the screw 22, thereby lowering the thermal conductivity inside the reactor and causing a defect that is fatal to the normal operation of the screw 22. Have.

The present invention is to solve the above-mentioned problems, it is possible to continuously pyrolyze the waste tire chip, it is possible to improve the heat transfer efficiency, pyrolysis reaction efficiency and processing capacity through the tandem hot gas generator, the accumulation of pyrolysis residues It is an object of the present invention to provide a disc movable tube reactor equipped with a tandem hot gas generator that can be prevented.

Disc moving tube reactor equipped with a tandem hot gas generator according to the present invention for achieving the above object, the heating tube is partitioned into at least two heating spaces by a partition wall, the inlet and outlet are formed in each heating space, and the partition wall An opening and closing hole connected to or disconnecting each heating space, a gas generator connected to each inlet for injecting heating gas into each heating space, and penetrating the heating tube in a longitudinal direction and injecting waste tire chips into one end thereof. An upper feed tube having an inlet formed therein, a lower feed tube penetrating the heating tube in a longitudinal direction and disposed parallel to the lower portion of the upper feed tube, and having an outlet for discharging pyrolytic carbon black at one end thereof; and the upper and lower feed tubes A first housing installed at the other end of the first housing and having a drive sprocket installed therein; A second housing installed at one end of the lower transfer tube and having a driven sprocket installed therein, a chain wound around the driving and driven sprocket, and circulating through the upper and lower transfer tubes and installed at equal intervals along the chain; It includes a plurality of disks.

In the disk movable tube reactor provided with the tandem hot gas generator according to the present invention configured as described above, the inside of the heating tube is partitioned into at least two or more heating spaces by partition walls, and the gas generator for injecting the heating gas into each heating space is provided. Each is installed. Therefore, the internal temperature of the heating tube can be increased, and the pyrolysis reaction efficiency and processing capacity of the waste tire chip can be improved.

In addition, when continuously supplying the waste tire chips in the form of chips using a chain coupled disk, it is possible to continuously thermally decompose, thereby further improving the pyrolysis reaction efficiency of the waste tire chips. In particular, as the tire tire chip is continuously supplied, it is possible to prevent a phenomenon (coking phenomenon) in which residues generated during pyrolysis accumulate in the transfer tube.

With reference to the accompanying drawings will be described embodiments of the present invention; In the following description of embodiments according to the present invention, and in adding reference numerals to the components of each drawing, the same reference numerals are added to the same components as much as possible even though they are shown in different drawings.

1 is a front view of a disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

Disc movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention, the heating tube is filled with a hot heating gas for the thermal decomposition of the waste tire chip (chip waste shredded) 110, a transfer tube 120,130 which is a transfer path of the waste tire chip, a disk 140 and a chain 150 for transferring the waste tire chip in the transfer tube 120,130, and a drive for circulating the chain 150 Means 160 and housings 170 and 180 in which the driving means 160 are installed.

Referring to Figure 1, the heating tube 110 is formed of a hollow tube (duct) to enable the filling of the heating gas. Both ends of the heating tube 110 are closed and sealed, and the sealed interior is partitioned into the first and second heating spaces 112a and 112b by the partition wall 111. The first and second heating spaces 112a and 112b partitioned by the partition wall 111 are connected to the outside through the inlets 113a and 113b and the outlets 114a and 114b.

The inlets 113a and 113b include first and second inlets 113a and 113b to inject high temperature heating gas into the first and second heating spaces 112a and 112b, respectively. In addition, the outlets 114a and 114b include first and second outlets 114a and 114b to separately discharge the heated gas cooled in the first and second heating spaces 112a and 112b. The first and second hot gas generators 115a and 115b are installed at the first and second inlets 113a and 113b, respectively.

The partition wall 111 partitioning the first and second heating spaces 112a and 112b is provided with an opening and closing hole 116 for connecting or blocking the first and second heating spaces 112a and 112b according to a user's need. . In addition, a plurality of baffles 117 face each other and are alternately disposed in the first and second heating spaces 112a and 112b partitioned by the partition wall 111.

The heating tube 110, the hot heating gas generated in the first hot gas generator (115a) is injected into the first heating space (112a), the hot heating gas generated in the second hot gas generator (115b) Is injected into the second heating space (112b), has a structure for heating the first and second heating spaces (112a, 112b) separately.

As such, the structure in which the independent first and second heating spaces 112a and 112b are individually heated by using the first and second high temperature gas generators 115a and 115b may increase the maximum temperature of the heating space. The time to reach the maximum temperature can be shortened.

As described above, the disk movable tube reactor equipped with the tandem hot gas generator according to the embodiment of the present invention uses a heating structure using the first and second hot gas generators 115a and 115b, that is, a tandem hot gas generator. It has a heating structure (tandem type heating structure). Therefore, compared with the conventional heating structure (a structure in which the entire heating space is heated by using one hot gas generator), the thermal efficiency transferred to the waste tire chip is high, so that the pyrolysis reaction efficiency can be improved, and the processing capacity of the waste tire chip can be improved. Can be increased. In particular, there is little temperature difference between the inlet (113a, 113b) and the outlet (114a, 114b) of the hot gas, the thermal decomposition efficiency of the waste tire chip is very excellent.

In addition, the heating tube 110 of the above-described structure can adjust the temperature of the first and second heating spaces (112a, 112b) in accordance with the amount of waste tire chips introduced. That is, when the amount of waste tire chips is small, the first and second hot gas generators 115a are connected after opening the opening and closing holes 116 provided in the partition wall 111 to connect the first and second heating spaces 112a and 112b. Only one of (115b) is operated and heated. In particular, when the pyrolysis of the waste tire chip proceeds for a long time, the durability of the first and second hot gas generators 115a and 115b may be improved by alternately operating the first and second hot gas generators 115a and 115b. .

In addition, the above-described heating tube 110 is provided with a plurality of baffles 117 therein, so that the injected hot heating gas stays in the first and second heating spaces 112a and 112b for a long time. Accordingly, the pyrolysis reaction efficiency of the waste tire chip is improved, the heating time is shortened, and the first and second heating spaces 112a and 112b can be evenly heated.

2 is a cross-sectional view of a disk movable double tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

As shown in Figure 1, the transfer tube (120,130) is formed of a hollow tube to transfer the waste tire chip. The transfer tubes 120 and 130 are installed to penetrate the heating tube 110 in the longitudinal direction, and both ends thereof protrude out of the heating tube 110. And it is connected to the housing (170, 180) at both ends protruding.

The transfer tubes 120 and 130 are composed of an upper transfer tube 120 and a lower transfer tube 130 arranged in parallel in the vertical direction. Among these, one end of the upper transfer tube 120 is formed with an inlet 122 into which waste tire chips are input, and one end of the lower transfer tube 130 is formed with an outlet 132 through which pyrolytic carbon black is discharged.

Looking in more detail with respect to the upper and lower transfer tubes (120,130) described above with reference to Figure 2, the upper transfer tube 120 and the lower transfer tube (120,130) is configured in a pair arranged in parallel to the left and right, respectively. The upper bracket 124 is installed between the upper transfer tubes 120, and the lower bracket 134 is installed between the lower transfer tubes 130.

The brackets 124 and 134 support the upper and lower transfer tubes 120 and 130 to prevent shaking. However, since the brackets 124 and 134 may interfere with the flow of the heating gas in the first and second heating spaces 112a and 112b, a plurality of through holes 126 and 136 are formed on the brackets 124 and 134 as in the present embodiment. It is desirable to.

Since the transfer tubes 120 and 130 having the structure as described above are smaller in diameter than the conventional single transfer tube, a plurality of transfer tubes 120 and 130 may increase the area in contact with the hot heating gas, thereby improving the pyrolysis reaction efficiency.

In addition, since the volume of the plurality of transfer tubes 120 and 130 is larger than that of the conventional single transfer tube, the processing capacity of the waste tire chip may be increased. In particular, as the volume of the transfer tubes 120 and 130 increases, the volume of the heating tube 110 relatively decreases, thereby further increasing the maximum temperature of the heating space and further shortening the time to reach the maximum temperature. have.

3 is a view showing another embodiment of the transfer tube of the disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

The transfer tubes 120 and 130, which are transfer paths of the waste tire chips, further include endothermic fins 128 and 138 so as to improve pyrolysis reaction efficiency. The heat absorbing fins 128 and 138 may be formed in various shapes. As shown in FIG. 3 (a), the heat absorbing fins 128 and 138 extend in the longitudinal direction of the transfer tubes 120 and 130, and may be composed of a plurality of radially disposed on the outer peripheral surface thereof. Can be. In addition, as shown in Figure 3 (b), a plurality of heat absorbing fins (128,138) are radially disposed on the outer circumferential surface of the transfer tube (120,130), it may be spaced at regular intervals in the longitudinal direction of the transfer tube (120,130). In addition, it may be formed spirally along the outer circumferential surface of the transfer tube (120, 130) as shown in (c) of FIG.

The heat absorbing fins 128 and 138 are not limited to the above-described embodiments, and any heat absorbing fins 128 and 138 may be formed as long as they can improve the thermal decomposition efficiency.

4 and 5 are cross-sectional views of a disk movable tube reactor equipped with a tandem hot gas generator according to another embodiment of the present invention.

The conveying tubes 120 and 130 shown in FIGS. 4 and 5 are single conveying tubes. Looking at the shape, the cross section of the conveying tube (120, 130) is formed into a rectangular (see Fig. 4) extending to the left or right or an oval (see Fig. 5) extending to the left and right.

In general, the pyrolysis reaction efficiency of the waste tire chip transferred through the transfer tube is best when the stack height of the waste tire chip is 1/3 of the diameter of the transfer tube. That is, when the stacked height of the waste tire chip is equal to or greater than the height, the pyrolysis reaction efficiency decreases, and when less than the height, the treatment efficiency decreases.

Accordingly, when the upper and lower transfer tubes 120 and 130 are formed in a rectangular cross-section or an elliptical cross-section extending from side to side as in this embodiment, the stack height is the same, but the surface area and volume are increased compared to the transfer tube of the circular cross section.

As a result, the present embodiment is a single transfer tube (120,130), but by forming the shape of the rectangular or oval can increase the pyrolysis reaction efficiency and the processing capacity of the waste tire chip.

Referring to FIG. 1, waste tire chips introduced into the upper transfer tube 120 are transferred by circulation of a chain 150 in which a plurality of disks 140 are installed. The chain 150 is wound around the drive sprocket 162 and the driven sprocket 164 provided in the housings 170 and 180, and circulated by the rotation of the drive motor 166. At this time, the chain 150, the drive sprocket 162 and the driven sprocket 164 is composed of a pair arranged in parallel to the left and right.

The housings 170 and 180 include a first housing in which the driving sprocket 162 and the driving motor 166 are installed, and a second housing 180 in which the driven sprocket 164 is installed.

Among these, the first housing 170 is provided with an exhaust port 172 for discharging oil vapor generated when pyrolysis of the waste tire chip. In addition, the second housing 180 is provided with an outlet 182 for discharging pyrolytic carbon black generated during pyrolysis. In addition, safety valves 174 and 184 are installed in the first and second housings 170 and 180 to prevent the internal pressure from rising due to the gas generated during pyrolysis of the waste tire chip.

On the other hand, the outer side of the first housing 170, the first housing 170 in the longitudinal direction of the transfer tube (120, 130) in accordance with the temperature of the interior (first and second heating spaces (112a, 112b)) of the heating tube 110 An actuator 176 for moving to is installed. This actuator 176 is a means for preventing the chain 150 extended by the high temperature heating gas from being separated from the driving and driven sprockets 162 and 164.

That is, the actuator 176 separates the first housing 170 from the heating tube 110 along the length of the chain 160 extending or contracting according to the temperatures of the first and second heating spaces 112a and 112b. Or close to the heating tube 110. When the first housing 170 is moved by using the actuator 176, the separation distance of the driving and driven sprockets 162 and 164 is adjusted so that the extended or contracted chain 150 is separated from the driving and driven sprockets 162 and 164. Can be prevented.

FIG. 6 illustrates a disk of a disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

Disk 140 is installed at equal intervals along the chain 150, as shown in Figure 1, and consists of a plurality of protruding alternately to the top and bottom of the chain 150.

Looking at the shape of the disk 140 with reference to Figure 6, the disk 150 is formed in the same shape (semi-circular) with the half cross-section of the upper and lower transfer tubes (120,130). In addition, the circumference of the disk 140 is bent in the advancing direction of the chain (150 in FIG. 1) (the conveying direction of the waste tire chip), and the plurality of slits 142 radially cut on the disk 140 are radially disposed. Is placed.

The disk 140 of this shape is effective for heat transfer because the agitated waste tire chip through the bent portion in the transfer process of the waste tire chip. In addition, by using the bent portion to transfer scraped tire chips like scraping can improve the transfer efficiency.

Looking at the thermal decomposition process of the waste tire chip using a disk movable tube reactor equipped with a tandem hot gas generator according to the present invention configured as described above are as follows.

The waste tire chip introduced through the inlet 122 of the upper transfer tube 120 is installed in the chain 150 via the upper transfer tube 120 and the lower transfer tube 130 by the disk 140 circulating and moving. It is transferred to the second housing 180.

In this way, the pyrolysis is indirectly heated by high temperature heating gas injected into the inside of the heating tube 110, that is, the first and second heating spaces 112a and 112b in the process of being transported along the upper and lower transfer tubes 120 and 130. At this time, the generated oil vapor is discharged through the exhaust port 172, the pyrolysis carbon black is discharged through the discharge port 132 and the outlet of the second housing 180 of the lower transfer tube 130.

Waste tire chips pyrolyzed through the above-described process is continuously transported and pyrolyzed along the upper and lower transfer tubes (120,130), so that residues generated during pyrolysis do not accumulate inside the upper and lower transfer tubes (120,130) and thus caulking. Can be prevented.

While the present invention has been described through the preferred embodiments, the above-described embodiments are merely illustrative of the technical idea of the present invention, and various changes may be made without departing from the technical idea of the present invention. Those of ordinary skill will understand. Therefore, the protection scope of the present invention should be interpreted not by the specific embodiments, but by the matters described in the claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a front view and a plan view of a disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

Figure 2 is a cross-sectional view of a disk movable double tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

3 is a view showing another embodiment of the transfer tube of the disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

4 and 5 are cross-sectional views of a disk movable tube reactor equipped with a tandem hot gas generator according to another embodiment of the present invention.

6 illustrates a disk of a disk movable tube reactor equipped with a tandem hot gas generator according to an embodiment of the present invention.

7 is a view of a screw pyrolysis reactor for pyrolyzing materials such as conventional waste tires, waste plastics and waste wood.

* Description of the symbols for the main parts of the drawings *

110: heating tube 120: upper transfer tube

130: lower transfer tube 140: disk

150: chain 160: drive means

170: first housing 180: second housing

Claims (15)

A heating tube partitioned into at least two heating spaces by a partition wall and having an inlet and an outlet for each heating space; An opening and closing hole installed at the partition wall to connect or block each heating space; A gas generator connected to each inlet for injecting heating gas into each heating space; An upper transfer tube penetrating the heating tube in a longitudinal direction and having an inlet for injecting waste tires into one end thereof; A lower transfer tube penetrating the heating tube in a longitudinal direction, disposed in parallel to the lower portion of the upper transfer tube, and having an outlet configured to discharge pyrolytic carbon black at one end thereof; First housings installed at the other ends of the upper and lower transfer tubes and having a driving sprocket installed therein; A second housing installed at one end of the upper and lower transfer tubes and having a driven sprocket installed therein; A chain wound around the drive and driven sprockets and circulating through the upper and lower transfer tubes; And Disc moving tube reactor comprising a plurality of disks are installed at equal intervals along the chain. The method according to claim 1, The upper and lower transfer tube, the drive and driven sprocket, the disk movable tube reactor, characterized in that the pair consists of a parallel arrangement. The method according to claim 1, The upper and lower conveying tube has a rectangular cross-section extending to the left and right, the drive and driven sprocket, the disk movable tube reactor, characterized in that consisting of a pair of the chain arranged in parallel. The method according to claim 1, The upper and lower conveying tube has an elliptical cross-section extending from side to side, the drive and driven sprocket, the disk movable tube reactor, characterized in that consisting of a pair of the chain arranged in parallel. The method according to any one of claims 2 to 4, The disk is formed in the same shape as the half cross-section of the upper and lower transfer tube, disc movable tube reactor, characterized in that protruding alternately to the upper and lower of the chain. The method according to claim 5, The disk circumference of the disk is characterized in that the disk is bent in the traveling direction of the chain. The method according to claim 6, And a plurality of slits radially cut on the disk are disposed radially. The method according to any one of claims 2 to 4, Disk end tube, characterized in that the heat absorbing fin is formed on each outer peripheral surface of the upper and lower transfer tube. The method according to claim 8, The endothermic fin extends in the longitudinal direction of the upper and lower transfer tube, the disk movable tube reactor, characterized in that consisting of a plurality of radially disposed on each outer peripheral surface of the upper and lower transfer tube. The method according to claim 8, And the endothermic fins are spirally formed along each outer circumferential surface of the upper and lower transfer tubes. The method according to any one of claims 2 to 4, A plurality of baffles are provided in the heating space, and the baffles protrude in opposite directions to each other and are alternately arranged. The method according to any one of claims 2 to 4, The first housing is a disk movable tube reactor, characterized in that installed to be movable in the longitudinal direction of the heating tube. The method according to claim 12, And a actuator for measuring an internal temperature of the heating tube, and an actuator for moving the first housing according to the signal of the sensor. The method according to any one of claims 2 to 4, At least one of the first and the second housing disc movable tube reactor, characterized in that the exhaust port for discharging the steam. The method according to any one of claims 2 to 4, At least one of the first and the second housing is a disk movable tube reactor, characterized in that the safety valve is installed to open and close automatically according to the internal pressure.

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