KR101031886B1 - Combination Type Cooling System for Elimination of Heat of Reaction AT Fischer-Tropsch Slurry Bubble Column Reactor - Google Patents

Abstract

The present invention relates to a mixed cooling device for removing the reaction heat of the FT slurry bubble column reactor that can control the temperature of the reaction heat generated during the reaction of the synthesis gas generated in the coal gasifier and the catalyst in the reactor, more specifically FT In the slurry bubble column reactor, a latent heat cooling tube containing an inner tube is piped to the center, and a plurality of cooling tubes are vertically separated and piped to the side edge. Therefore, the central cooling method by the latent heat in which the coolant injected from the inner tube is changed into steam and the side cooling method by directly supplying the cooling water or steam to the cooling tube selectively are mixed to uniform the temperature of the center and side of the reactor. It relates to a mixed cooling device for removing the heat of reaction of the FT slurry bubble column reactor to be controlled.

FT slurry bubble column reactor, cooling tube, inner tube, latent heat of evaporation, mixing, syngas, iron-catalyst, reaction heat removal

Description

Combination Type Cooling System for Elimination of Heat of Reaction AT Fischer-Tropsch Slurry Bubble Column Reactor

The present invention relates to a mixed cooling device for removing the reaction heat of the FT slurry bubble column reactor that can control the temperature of the reaction heat generated during the reaction of the synthesis gas generated in the coal gasifier and the catalyst in the reactor, more specifically FT In the slurry bubble column reactor, a latent heat cooling tube containing an inner tube is piped to the center, and a plurality of cooling tubes are vertically separated and piped to the side edge. Therefore, the central cooling method by the latent heat in which the coolant injected from the inner tube is changed into steam and the side cooling method by directly supplying the cooling water or steam to the cooling tube selectively are mixed to uniform the temperature of the center and side of the reactor. It relates to a mixed cooling device for removing the heat of reaction of the FT slurry bubble column reactor to be controlled.

In general, the coal indirect liquefaction system is to prepare a synthetic fuel in the form of wax and finally use it as a raw material for fossil fuels through gasification process-> refining process-> liquefaction process.

Here, the gasification process is a process of converting coal into a synthesis gas mainly containing hydrogen and carbon monoxide. In addition, the refining process is a process of collecting and desulfurizing the syngas produced through the gasification process and removing various impurities. Lastly, the liquefaction process is a process of converting the purified syngas to a liquid synthetic fuel by reacting on a catalyst.

In order to perform the liquefaction process, the synthesis gas is uniformly dispersed in the FT slurry bubble column reactor to react with the iron-catalyst contained in the slurry of the FT slurry bubble column reactor to generate a synthetic fuel.

In the FT slurry bubble column reactor, when synthesis gas (CO + H ₂ ) reacts with iron (Fe) -catalyst, synthetic fuel is generated. At this time, the internal temperature of the FT slurry bubble column reactor is increased by exothermic heat. When the internal temperature of the reactor rises, gaseous products such as methane gas, ethane, and propane are increased to reduce the production of liquid fuel and wax. In addition, if the reaction temperature is kept high, catalyst deactivation occurs quickly, which shortens the life of the catalyst. Therefore, maintaining a constant internal temperature of the FT slurry bubble column reactor must be preceded.

As a method for maintaining a constant temperature inside the reactor, a method of piping a cooling tube for circulating water or steam therein has been used, but such a structure requires a large amount of cooling water to be supplied to the cooling tube, as well as water. Since it has to be continuously circulated, energy is consumed, cooling efficiency is also very low, and as a result, the number of tubes is increased to increase the cross-sectional area of the cooling tubes.

In this regard, the present applicant has proposed a cooling apparatus using latent heat in Patent Registration No. 0901736. As described with reference to FIG. 7, the applied cooling device 1 introduces a cooling tube 4 having an injection tube 3 therein into the reaction chamber of the reactor 2, and extends a plurality of downwardly downward injection tubes. By supplying the cooling water from the upper side to the lower side, the cooling water supplied through the injection hole formed in the injection pipe is injected into the space between the cooling pipe and the injection pipe, and the injected cooling water absorbs the reaction heat and is evaporated into steam and discharged upward. Provided. The registration is a method of controlling the internal reaction temperature of the reactor by the latent heat of evaporation of the cooling water has the advantage of increasing the cooling efficiency.

However, since the reactor has a long length in the vertical direction, various reaction temperatures appearing for each part are formed, and precise temperature control is difficult by spraying the same cooling water. In addition, the synthesis gas supplied by the dispersion plate is bubbling more through the central portion of the reactor cross-section, the reaction is more active, the reaction temperature is increased, the reaction temperature of the center and side of the reactor also occurs.

Therefore, there is a need for a study of a cooling apparatus that can more precisely control the temperature inside the reactor in response to various reaction temperature differences according to the height and width direction of the reactor.

In the FT slurry bubble column reactor according to the present invention,

In the FT slurry bubble column reactor partitioned into an upper reaction chamber and a lower introduction chamber by a gas dispersion plate, a plurality of latent heat cooling tubes are vertically piped at the center of the interior, and inside the latent heat cooling tube, a multi-tube inner pipe is piped to form an injection hole formed in the inner pipe. The cooling water is injected through the cooling water so that the cooling water is cooled by latent heat, which is changed into steam, and a plurality of cooling pipes vertically piped along the side of the inner side of the reactor are piped separately from the central latent heat cooling pipe. It is an object to control the side reaction temperature of the reactor.

In addition, the inner tube inside the latent heat cooling tube is formed in the injection hole in a different range from the inner tube adjacent in the vertical direction, and each inner tube is provided with a valve to enable separate cooling water injection, installed on the side of the reactor It is another object of the cooling tube to be formed in multiple stages to enable temperature control in multiple stages in the vertical direction of the reactor.

Mixed type cooling device for removing the reaction heat of the FT slurry bubble column reactor of the present invention for solving the above problems,

FT which controls the reaction heat generated by the reaction of syngas and catalyst produced in coal gasifier supplied to the reactor by piping a cooling tube to the reactor divided into the lower introduction chamber and the upper reaction chamber by the internal gas dispersion plate. A mixing-in cooling device for removing reaction heat of a slurry bubble column reactor, comprising: a first latent heat cooling tube horizontally piped to an upper portion of a reaction chamber of the reactor; A second latent heat cooling tube configured to be horizontally piped to the introduction chamber of the reactor, one end of which is exposed to the outside, and an outlet is formed at the exposed end to discharge the phase-changed steam; A plurality of third latent heat cooling tubes vertically connecting the first and second latent heat cooling tubes at a central portion of the reactor; A plurality of pipes are respectively individually piped into the first to third latent heat cooling tubes, and a plurality of injection holes are formed in the pipes that are piped inside the third latent heat cooling tubes, and the injection holes are different from each other adjacent to each other. It is formed in the section of the different height to make the cooling water injection, the injected cooling water absorbs the ambient heat and the inner tube is made of phase change to steam; And a plurality of cooling tubes communicating with each of the lower and upper side surfaces of the reactor reaction chamber, the cooling tubes being piped in a ring shape around the third latent heat cooling tube as a vertical tube in which cooling water is introduced from the lower portion and discharged to the upper portion.

Mixed-type cooling device for removing the reaction heat of the FT slurry bubble column reactor according to the present invention,

In the center where the reaction heat is high in the reactor, the latent heat cooling tube with good cooling efficiency is piped, and the cooling tube is piped on the side where the reaction heat is relatively low, so that the temperature control at the center and the edge of the reactor can be separated and precise temperature control can be achieved. . In particular, by maximizing the cooling efficiency by the latent heat cooling tube can reduce the number of cooling pipes piped to the central portion of the reactor mainly gas bubbling behavior can reduce the impact on the gas bubbling behavior.

In addition, the inner tube of the latent heat cooling tube is formed by a multi-pipe equipped with each individual valve, the injection hole formed in each inner pipe to be formed in a section having a different height, the cooling tube is vertically separated by a multi-stage cooling device By multi-stage separation in the width direction and the vertical direction of the reactor to enable individual driving has an effect of increasing the synthesis fuel production rate by more precisely adjusting the internal temperature of the reactor.

Hereinafter will be described in detail with the accompanying drawings with respect to the mixed cooling device for removing the reaction heat of the FT slurry bubble column reactor according to the present invention.

1 is a block diagram showing a mixed cooling apparatus for removing the reaction heat of the FT slurry bubble column reactor according to the present invention, Figures 2a and 2b is an enlarged view of a portion A of Fig. 1, a cross-sectional view BB cross-sectional view, Figure 3 Is a schematic diagram showing a pipe state of a latent heat cooling tube and a cooling tube according to an embodiment of the present invention.

As shown, the mixed cooling device 10 for removing the reaction heat of the FT slurry bubble column reactor according to the present invention receives a synthesis gas from a coal gasifier and reacts with a catalyst to generate a synthetic fuel, and in this process, a reaction heat is generated. It is a device that can control the temperature inside.

Here, the reactor 20 is composed of a main body 21 of the cylinder, and upper and lower cover 22, 23 coupled to the upper and lower portions of the main body, respectively, and the gas distribution plate between the lower cover 23 and the body 21 (24) was installed to divide the inner space into a lower introduction chamber (26) and an upper reaction chamber (25). In this structure, the introduction chamber 26 is supplied with the synthesis gas generated by the coal gasifier to distribute the synthesis gas to the upper reaction chamber through the gas distribution plate, and the reaction chamber is loaded with the synthesis Allow reaction with gas.

In addition, the reactor 20 is installed in the reactor 20 to remove the reaction heat generated in the reaction of the synthesis gas and the catalyst to maintain a temperature suitable for the production of synthetic fuel.

The cooling device 10 is separated into a latent heat cooling tube 30 for cooling the central portion of the reactor 20, and the cooling tube 50 for cooling the side portion, which is the edge of the reactor except the central portion, The temperature control of the center and side of the reactor is made separately.

First, look at the latent heat cooling tube (30),

The latent heat cooling tube has a first latent heat cooling tube 31 that is horizontally piped to an upper cover 22 that is an upper portion of the reaction chamber 25 of the reactor in the form of a double tube having an inner tube 40 therein, and an introduction chamber of the reactor. A second latent heat cooling tube 32 having horizontal pipes 26 and one end thereof being exposed to the outside and having discharge ports 321 formed at the exposed ends to discharge the steam with the phase change of the cooling water, and the first latent heat cooling tube And a plurality of third latent heat cooling tubes 33 for vertically connecting the second latent heat cooling tubes.

The first latent latent cooling tube 31 and the second latent latent cooling tube 32 are piped so as to be located at the center of the reactor section vertically installed. That is, the first latent heat cooling tube 31 and the second latent heat cooling tube 32 are inserted into the reactor from the outside or the main pipe 34 discharged to the outside from the inside of the reactor, the main pipe is in communication with the center of the reactor cross section It is composed of an auxiliary pipe 35 that is widely piped to the part, the auxiliary pipe 35 may be formed in a variety of forms such as a circle, a grid or a plurality of concentric circles, the shape shown in FIG. An inlet port 311 is formed at an end of the first latent heat cooling tube 31 to allow the inflow of cooling water to be made, and an outlet 321 formed at the end of the second latent heat cooling tube 32 is cooled. The steam generated during the process should be discharged.

In addition, the third latent heat cooling tube 33 communicates the first latent heat cooling tube installed at the upper side of the reactor and the second latent heat cooling tube installed at the lower side thereof, and as shown in FIG. It is preferable to pipe them at regular intervals to facilitate temperature control in the reactor.

Next, a plurality of inner tubes 40 are piped inside the first to third latent heat cooling tubes 30, 31, 32, and 33, and an injection hole is provided on the inner tube located inside the third latent heat cooling tubes 33. 401 is formed to allow the cooling water flowing into the inner tube to be injected through the injection hole. Preferably, the number of inner tubes 40 installed in the latent heat cooling tube 30 is 2 to 5 to subdivide the reactor section into multiple stages so that the cooling water is sprayed. Wherein the number of the inner pipe is to increase the number of pipes as the length of the reactor is increased so that the segmentation is possible, but if the number of the inner pipe exceeds 5, the cooling water injection angle is limited by the other inner pipe to evenly spray the cooling water It is preferable to make the injection within the above range with difficulty.

Referring to Figures 1 and 2a showing an embodiment, the inner tube 40 is formed of three tubes, such as the first to third inner tubes (41, 42, 43) as shown. The first inner tube 41 is piped inside the first to third cooling tubes and communicated with one flow path, and the second inner tube 42 and the third inner tube 43 are also similar to the first inner tube. 3 Inside the cooling pipes are piped as independent flow paths. In addition, the inner tube 40 is formed with a plurality of injection holes 401 in the tube located inside the third latent heat cooling tube 33 to allow the injection of the cooling water flowing into the inner tube.

Here, as shown in FIG. 2B, the diameter of the inner tube 40, which is a bundle of three tubes having different flow paths, is smaller than half of the inner diameter of the latent heat cooling tube 30, so that a gap is formed between the inner tube and the latent heat cooling tube. It is desirable to form sufficiently. The gap is used as a space in which the coolant can be injected by the injection hole described later, or as a space for discharging the phase-changed steam.

In addition, the injection hole 401 formed in the first to third inner pipe (40, 41, 42, 43) may be formed in a section having a different height and the other adjacent adjacent body. Since the cooling water sprays a part of the cooling water while passing through the plurality of injection holes 401 sequentially, the amount of cooling water gradually flowing to the inner tube is reduced, thereby lowering the injection pressure. Therefore, in order to prevent the difference in temperature control that may occur as the amount of cooling water sprayed at the first injection hole and the amount of cooling water injected at the last time is different, the injection hole positions formed in each inner tube are differently formed to spray the same coolant as much as possible. By minimizing the temperature difference caused by the injection amount is minimized.

For example, as shown in FIG. 1, when three inner tubes 40, 41, 42, and 43 are formed, the first inner tube 41 forms an injection hole in section a of the drawing, and the second inner tube 42 is shown in FIG. The injection port is formed in the section b, and the third inner tube 43 may form the injection hole in the section c of the drawing so that the injection is performed at the same pressure in each section. Of course, by increasing the number of the inner tube 40 can be further divided into a multi-stage separation section forming the injection hole.

In addition, the inner tube 40 is a diameter of the inner tube in the second latent latent cooling tube 32 is discharged more than the inner tube diameter in the first latent heat-cooling tube 31 through which the coolant is introduced into the reactor through the injection port. It can form small. At this time, the inner tube of the third latent heat cooling tube is formed in the same part as the inner diameter of the inner tube in the first cooling tube, the formation of the injection hole is formed in the same point as the inner tube diameter in the second cooling tube, The diameter of the inner tube in which the injection hole is formed can be made gradually smaller. As such, the change in the inner tube diameter is such that the diameter is made smaller by the amount of the cooling water discharged through the injection hole, thereby preventing the lowering of the injection pressure of the next injection hole by the cooling water lost by the injection.

It is preferable that the plurality of injection holes formed in the first to third inner pipes are formed to be gradually widened from the inner circumferential surface of the inner pipe to the outer circumferential surface so that the cooling water is sprayed in a wide range by the pressure. In addition, the reaction is actively performed in the reactor, the relatively high heat dissipation portion can be formed in a narrower forming interval of the injection hole than the other portion to increase the injection amount of the cooling water.

In addition, the injection hole 401 is formed so that a plurality of injection holes on the same horizontal line, or as shown in the enlarged view of Figure 2a by arranging the injection holes 401 in the spiral along the inner pipe (41, 42, 43) the same horizontal line Only one jet can be formed on the bed. As such, only one injection hole may be formed on the same horizontal line, and thus, the injection may be easily performed even at a relatively low pressure than that of a plurality of injection holes.

Next, the cooling tube 50,

Unlike the latent heat cooling tube, which is the above-described double tube, it is formed as a single tube through which cooling water or steam flows directly, and is horizontally introduced into the lower portion of the reactor 20 as shown in FIGS. 1 and 3, and the inner wall of the reactor and Piped vertically to be close, and is discharged through the top of the reactor. The cooling pipe 50 may be piped to the entire vertical direction of the reactor, but preferably is to be piped only to the reaction chamber 25 in which the reaction is substantially made to increase the temperature.

In addition, the cooling pipe 50 may be a plurality of vertical pipes in the form of a ring along the inner wall of the reactor centered around the third latent heat cooling tube 33 is vertically piped in the center of the reactor can be made to adjust the side temperature. In this case, although the plurality of cooling pipes 50 are not shown, it is preferable that each of the pipes may be individually supplied with cooling water so that selective cooling of a specific part of the side of the reactor may be performed.

In addition, the cooling pipe 50 may be formed in multiple stages by separating a plurality in the vertical direction as described with reference to FIG. 4, and supplying cooling water to each of the multiple stages separately. In this way, if the cooling tube is formed in multiple stages, a plurality of internal side portions of the reactor may be separated and controlled in a vertical direction.

That is, the temperature control in the reactor is separated and controlled by the latent heat cooling tube at the center and the cooling tube at the side in the horizontal direction of the reactor, and in the vertical direction, the third latent heat cooling tube having different parts of the injection hole 401 in the inner inner tube. By controlling the 50 and the multi-stage cooling tube (50) by subdividing the inside of the reactor by the temperature control is made for each part to enable more precise temperature control.

In addition, although the cooling tube 50 is illustrated and described as a single tube through which cooling water flows, the cooling tube 50 may be formed as a double tube, such as a latent heat cooling tube, to allow cooling using latent heat.

Meanwhile, as shown in FIG. 5, the cooling device 10 may further include a circulation pipe 60 for recovering and resupplying the remaining cooling water. The circulation pipe 60 is a pipe that is piped outside the reactor, one end of which communicates with the inner tube in the first latent heat cooling tube 31, and the other end thereof communicates with the inner tube of the second latent heat cooling tube 32. The circulating pipe 60 piped in this way supplies coolant to the first latent heat cooling tube side, and sprays through the injection port and immediately recovers the remaining coolant from the second latent heat cooling tube side, and then supplies it back into the reactor through the first latent heat cooling tube side.

The cooling water storage tank 70 is further installed on the flow path of the circulation pipe 60 to temporarily store the recovered cooling water, and replenish the cooling water consumed by being injected into the reactor. In addition, the pump 80 is installed on the flow path of the circulation pipe so that the supply amount of the cooling water can be adjusted according to the degree of operation of the pump.

In addition, the injection amount of the cooling water can be adjusted by the valve 90 in addition to the pump. The valve 90 is mounted on the circulating pipe portion from which the coolant is discharged from the reactor to adjust the amount of coolant injected by adjusting the coolant pressure of the inner tube by the valve operation. At this time, the valve 90 may be installed in the circulation pipe of the cooling water inlet portion, but is installed in the discharge portion after being injected into the reactor as shown, so that it is easy to control the pressure by the pump desirable.

In addition, as shown in FIG. 6, the valve 90 may be independently mounted to each of a plurality of inner tubes to selectively adjust the coolant pressure of each inner tube to adjust the injection amount of the cooling water. At this time, each section of the reactor is equipped with a temperature sensor, by measuring the reaction temperature in the part equipped with the temperature sensor to open and close the associated valve by the measured value to be able to partially control the temperature in the reactor have.

Hereinafter, the operation of the mixed cooling apparatus for removing the reaction heat of the FT slurry bubble column reactor according to the present invention will be briefly described with reference to the accompanying drawings.

First, the synthesis gas introduced into the introduction chamber 26 of the FT slurry bubble column reactor 20 is distributed and supplied to the reaction chamber 25 through the gas distribution plate 24. Syngas supplied to the reaction chamber is raised by the bubbling gas fluid behavior, and reacts with the catalyst contained in the reactor slurry.

Here, in the horizontal section of the vertically installed reactor 20, the gas fluid behavior is made more in the center than in the side portion, which is the edge of the reactor, so that the catalytic reaction is active in the central portion, thereby generating a large amount of reaction heat. The generated heat of reaction increases the temperature of the reactor, out of the range of about 200 to 350 ° C., which is a preferable temperature for the production of synthetic fuel, thereby increasing the generation of methane gas and carbon dioxide due to the high temperature, thereby lowering the production rate of synthetic fuel.

Therefore, by maintaining the temperature in the reactor through the cooling device 10 installed in the FT slurry bubble column reactor to maintain the optimum synthesis fuel production temperature at all times.

The cooling device 10 is a latent heat cooling tube 30 pipe to the center portion of the reactor in which the gas fluid behavior is active, and the cooling tube 50 is piped to the side of the relatively low edge of the gas fluid behavior to control the temperature To be done.

The temperature of the central portion of the reactor is controlled by the latent heat cooling tube (30). The latent heat cooling tube flows cooling water into the reactor 20 through an inner tube inside the first latent heat cooling tube 31 and descends vertically through an inner tube inside the third latent heat cooling tube 33 piped to a central portion of the reactor. Then, it passes through the reaction chamber 25 where the catalytic reaction is carried out and is transferred to the inner tube in the second latent heat cooling tube 32 of the introduction chamber 26.

In this process, when the valve 90 is operated, the coolant pressure in the inner tube 40 is increased to increase the amount of coolant sprayed through the injection hole 401 formed in the inner tube. That is, the coolant is injected into the space between the inner circumferential surface of the third latent heat cooling tube 33 and the outer circumferential surface of the inner tube 40, and the injected coolant absorbs heat transferred to the cooling tube to change into steam, and the phase-changed steam is made of 2 is discharged to the outside through the discharge port 321 formed at one end of the latent heat cooling tube (32).

As shown in FIG. 5, the remaining cooling water injected into the injection hole 401 is recovered through the circulation pipe 60 communicating with the inner tube in the second latent heat cooling tube and collected in the cooling water storage tank 70. It can be to re-supplied to the inner tube 40 in the reactor 20 by.

In addition, when the valve 90 is individually mounted to each inner tube 40 in the latent heat cooling tube, as shown in FIG. 6, when the reaction heat of section c is increased, the valve of the inner tube in which the injection hole is formed in section c is operated to increase the coolant pressure. It is possible to precisely control the temperature in the reactor for each section in the vertical direction, such as to increase the injection amount of the cooling water.

Meanwhile, the temperature of the reactor side portion is controlled by the cooling tube 50. The cooling tube is formed in multiple stages in the vertical direction of the reactor, the cooling water flowing therein is directly heat exchanged with the side surface of the reactor to control the temperature. For example, when the reaction temperature of the lowermost part of the reaction chamber is increased, the temperature is lowered by increasing the cooling water circulation rate inside the cooling tube of the lowermost part. In addition, if the temperature rises only in a certain part among the lowest stages, the temperature of each part in the reaction chamber is maintained at a temperature suitable for producing synthetic fuel by more precisely controlling the temperature by increasing the circulation rate of the cooling water around the tube.

1 is a block diagram showing a mixed cooling device for removing the reaction heat of the FT slurry bubble column reactor according to the present invention.

2A and 2B are an enlarged view of portion A of FIG. 1 and a cross-sectional view taken along line B-B.

Figure 3 is a schematic diagram showing a piping state of the first and second inner tube according to an embodiment of the present invention.

4 to 6 is a block diagram showing a hybrid cooling apparatus according to another embodiment of the present invention.

7 is a block diagram showing a cooling tube for removing the reaction heat of the conventional FT slurry bubble column reactor.

<Description of the symbols for the main parts of the drawings>

10: Chiller

20: reactor

21 main body 22 upper cover 23 lower cover

24 gas dispersion plate 25 reaction chamber 26 introduction chamber

30: latent heat cooling tube

31: first latent heat cooling tube 32: second latent heat cooling tube

33: third latent heat cooling tube 34: host 35: auxiliary tube

311: inlet 321: outlet

40: inner tube

41: first interior 42: second interior 43: third interior

401 nozzle

50: cooling tube

60: circulation tube

70: cooling water storage tank

80: pump

90: valve

Claims (4)

The synthesis gas produced in the coal gasifier supplied to the reactor by piping a cooling tube to the reactor 20 partitioned into the lower introduction chamber 26 and the upper reaction chamber 25 by the internal gas dispersion plate 24. In the mixing-junction cooling device for removing the reaction heat of the FT slurry bubble column reactor to control the heat of reaction generated by the reaction of A first latent heat cooling tube 31 horizontally piped to the reaction chamber 25 of the reactor; A second latent heat cooling tube (32) which is horizontally connected to the introduction chamber (26) of the reactor and whose one end is exposed to the outside and has an outlet (321) formed at the exposed end to discharge the phase-changed steam; A plurality of third latent heat cooling tubes (33) for vertically connecting the first latent heat cooling tubes and the second latent heat cooling tubes at a central portion of the reactor; A plurality of pipes are respectively individually piped into the first to third latent heat cooling tubes, and a plurality of injection holes 401 are formed in the pipes that are piped inside the third latent heat cooling tubes 33. An inner tube (40) formed in a section having a different height from another adjacent tube to be sprayed with coolant, and the injected coolant absorbs ambient heat and undergoes phase change with steam; And a plurality of cooling tubes 50 connected to the lower side and the upper side of the reactor reaction chamber, respectively, in which a plurality of pipes are formed in a ring shape around the third latent heat cooling tube as a vertical tube in which cooling water is introduced from the lower portion and discharged to the upper portion. Mixed cooler for removing the reaction heat of the FT slurry bubble column reactor, characterized in that configured. The method of claim 1, Piped outside the reactor 20, one end is in communication with the inner tube in the first latent heat cooling tube 31, the other end is in communication with the inner tube in the second latent heat cooling tube 32 is discharged to the inner tube of the second latent heat cooling tube. A circulation pipe 60 for resupplying the cooling water to the inner tube of the first latent heat cooling tube; Valve (90), the cooling water storage tank (70) and the pump (80) installed on the flow path of the circulation pipe; mixed cooler for removing the reaction heat of the FT slurry bubble column reactor, characterized in that further installed. The method according to claim 1 or 2, The cooling pipe (50) is a mixed cooling device for removing the reaction heat of the FT slurry bubble column reactor, characterized in that a plurality of separation in the vertical direction to form a multi-stage so that the individual cooling action is made in the reactor vertical direction. The method according to claim 1 or 2, The inner tube 40, which is a collection of multiple tubes, is equipped with a valve 90 for each tube to control the coolant pressure by adjusting the coolant pressure for each reactor section by individual valve operation, so that the amount of coolant injection is controlled. Mixed chiller for removing reaction heat.

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