Temperature control device in waste heat boiler
By designing an assembly including a reactor, a waste heat boiler, an actuator, a shaft sealing element, an axial bearing and a temperature control device, the problem of unstable temperature control of the waste heat boiler is solved, and reliable temperature regulation and safe operation of the equipment are achieved.
Patent Information
- Application Number
- CN202510348556.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-03-25
- Filing Date
- 2025-03-24
- Publication Date
- 2025-09-26
AI Technical Summary
The existing waste heat boiler temperature control device has the problem of temperature being too low or too high, which causes equipment corrosion and shaft expansion, affecting the reliability and safety of equipment operation.
An assembly including a reactor, a waste heat boiler, an actuator, a shaft, a shaft sealing element, an axial bearing, and a temperature control device was designed. The waste heat boiler outlet temperature is adjusted by the rotational motion of the shaft. A bypass pipe is used to divert the process air flow, and the axial bearing is combined with the axial force to absorb the axial force, ensuring the reliability and safety of temperature control.
It achieves reliable regulation of the waste heat boiler outlet temperature, avoids equipment corrosion and shaft expansion, and improves the reliability and safety of equipment operation.
Smart Images
Figure CN120701950A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an assembly comprising a reactor in which synthesis gas for methanol synthesis can be produced, in particular, and to a method for operating the assembly. Background Art
[0002] The industrial production of synthesis gas for methanol synthesis by heterogeneous catalytic reaction of gaseous or liquid carbonaceous feedstocks in suitable reactors is known. Synthesis gas can be a mixture of various gases containing, inter alia, hydrogen and carbon oxides.
[0003] The process gas formed in the reactor, which consists mainly of hydrogen, carbon oxides and steam as well as unconverted hydrocarbons such as methane, is subsequently cooled in a waste heat boiler. Waste heat boilers and processes for cooling synthesis gas are known.
[0004] Control devices for controlling the temperature of waste heat boilers are also known. Here, a partially cooled process gas stream is passed through a large bypass or multiple smaller bypasses. The cooled process gas stream is mixed with the partially cooled process gas stream from the bypass to establish the desired exhaust gas temperature of the waste heat boiler.
[0005] Exhaust gas temperature control is crucial because faulty control can result in excessively low exhaust temperatures or significantly elevated exhaust temperatures. Excessively low exhaust temperatures can negatively impact downstream components and processes in syngas production, which require minimum temperatures. Elevated exhaust gas temperatures can also negatively impact downstream components and processes in syngas production. Elevated exhaust gas temperatures can also lead to material corrosion in waste heat boilers or downstream components through "metal dusting." This corrosion manifests as the breakdown of metal into fine metal powder. Metal dusting is particularly prevalent in carbon monoxide atmospheres.
[0006] It is well known that the shaft connected to the control device will expand due to the increase in temperature during operation. As a result, the force required to move the shaft may increase due to friction, or the control device may completely seize.
[0007] The problems described above with the prior art for methanol synthesis arise from the design of the equipment used. Consequently, these problems also arise when similar equipment is used for other purposes (e.g., to produce another substance). Therefore, the production of syngas for methanol synthesis is considered merely as an example. Summary of the Invention
[0008] One object of the present invention is to reliably adjust the temperature at the outlet of the waste heat boiler based on the prior art.
[0009] This object is achieved by the independent claims. Further advantageous embodiments are specified in the dependent claims. The features listed in the claims and in the description can be combined with one another in any technically advantageous manner.
[0010] The present invention provides an assembly comprising a reactor, a waste heat boiler, an actuator, a shaft, a shaft sealing element, an axial bearing, and a temperature control device. The waste heat boiler is connected to the reactor. The shaft, the shaft sealing element, and the axial bearing are arranged on a common axis. The waste heat boiler has an opening through which the shaft passes, and the opening is sealed by the shaft sealing element. The actuator is arranged outside the waste heat boiler. The temperature control device is arranged inside the waste heat boiler. The actuator is coupled to the shaft at a first end and is designed to achieve rotational drive of the shaft. The temperature control device is coupled to the shaft at a second end and is designed to be adjusted by the rotational movement of the shaft. The axial bearing is designed to counteract movement of the shaft toward the first end of the shaft.
[0011] The assembly preferably takes the form of a reactor assembly with temperature regulation. The assembly can be designed to carry out a chemical reaction. The chemical reaction can be exothermic or endothermic. The assembly is particularly suitable for methanol synthesis gas production. However, the advantages described here can also be applied to many other chemical reactions. These advantages are also realized even when the assembly is not used as a reactor assembly and no chemical reaction occurs within the assembly. The assembly can also generally be designed as a heat exchanger.
[0012] The assembly comprises a waste heat boiler connected to the reactor.
[0013] The reactor can be designed to produce synthesis gas from a hydrocarbon feedstock. The feedstock preferably comprises gaseous or liquid hydrocarbons. The heat generated can be at least partially removed in a waste heat boiler.
[0014] The reactor is preferably suitable for methanol synthesis gas production. The reactor is particularly suitable for steam reforming. The reactor is preferably suitable for autothermal reforming. The reactor is particularly preferably suitable for combined reforming, wherein the combined reforming includes primary steam reforming and downstream secondary autothermal reforming.
[0015] The reactor allows the reactants to be converted into methanol synthesis gas. Methanol synthesis gas preferably comprises hydrogen, carbon monoxide, and carbon dioxide as reaction products. More preferably, methanol synthesis gas comprises a mixture of hydrogen and carbon monoxide. Methanol synthesis gas particularly preferably comprises a mixture of hydrogen and carbon dioxide. Methanol synthesis gas may also contain inert gases. Methanol synthesis gas may particularly contain methane as an inert gas. Methanol synthesis gas preferably contains nitrogen as an inert gas.
[0016] The reaction products can be transferred from the reactor to a waste heat boiler as a process gas stream. The waste heat boiler can cool the process gas stream. To this end, the waste heat boiler can include a plurality of heat transfer tubes through which the process gas stream can pass. The coolant can bypass the heat transfer tubes. As it flows through the heat transfer tubes, the process gas stream can transfer heat energy to the coolant via the tube walls. This can cause the liquid coolant in the waste heat boiler to evaporate, making the coolant in the waste heat boiler biphasic. The coolant can be removed from the waste heat boiler via a coolant outlet. The coolant is preferably water.
[0017] Alternatively, thermal energy may be transferred from the coolant to the process gas stream in the heat transfer tubes in the waste heat boiler via the tube walls of the heat transfer tubes.
[0018] The waste heat boiler is preferably an elongated hollow body. The waste heat boiler can be a cylindrical metal container that can be adapted to surround the heat transfer tubes. The waste heat boiler can have ports and connectors to allow fluid connection of the heat transfer tubes. The process gas stream can be diverted from the inlet to the heat transfer tubes via an inlet chamber. Downstream of the heat transfer tubes, the process gas stream is collected in an outlet chamber of the waste heat boiler and conveyed to the outlet of the waste heat boiler. The waste heat boiler can also include ports and connectors so that a coolant or other medium can be introduced into and discharged from the waste heat boiler in a shell space between and outside the heat transfer tubes. The shell space can be fluidically connected.
[0019] The temperature control device is arranged within the waste heat boiler. Preferably, the temperature control device is at least partially arranged in the outlet chamber of the waste heat boiler. The temperature control device enables the temperature at the waste heat boiler outlet to be regulated. The manner in which this is achieved is essentially irrelevant to the advantages of the assembly described herein. These advantages are always achieved when the temperature control device is adjustable via a shaft as described below. Therefore, there are a variety of different options for configuring the temperature control device.
[0020] Preferably, the temperature control device includes a bypass pipe, by means of which at least a portion of the process gas flow can be directed away from the heat transfer tube. The bypass pipe can extend into the outlet chamber of the waste heat boiler. The temperature control device can further include a plurality of bypass pipes, by means of which at least a portion of the process gas flow can be directed away from the heat transfer tube. The bypass pipe can extend into the outlet chamber of the waste heat boiler.
[0021] Preferably, the bypass line is designed not to exchange heat directly with the coolant.The process gas in the form of an uncooled process gas stream can then be guided in the bypass line as part of the uncooled process gas stream separately from the heat transfer tubes.
[0022] Particularly preferably, the bypass pipe or pipes are designed such that the coolant bypasses the bypass pipe or pipes. When passing through the bypass pipe or pipes, the initially uncooled process gas stream can transfer some of its heat energy to the coolant via the pipe wall of the bypass pipe or pipes. In particular, the heat transfer from the bypass pipe or pipes to the coolant can be lower than the heat transfer from the heat transfer pipe. The process gas in the form of a partially cooled process gas stream can then be transferred to the bypass pipe or pipes as part of the uncooled process gas stream separately from the heat transfer pipe. The inner diameter of the bypass pipe or pipes is preferably greater than the diameter of the heat transfer pipe. The following also applies to multiple bypass pipes.
[0023] Preferably, the temperature control means comprises a control flap or throttling device, a plunger or a throttling flap to control the flow of process gas through the bypass line.
[0024] The temperature control device enables the flow of uncooled or partially cooled process gas through the bypass line to be regulated. For example, in a first setting, the temperature control device can completely block flow through the bypass line, so that no uncooled or partially cooled process gas flows through the bypass line. In a second setting, the temperature control device can also block flow through the bypass line to a very small extent, so that a certain proportion of the uncooled or partially cooled process gas flows through the bypass line. The temperature control device can also control the flow of the uncooled or partially cooled process gas flow to a setting between the first setting and the second setting. The control device can act directly on the uncooled or partially cooled process gas flow and / or the cooled process gas flow. The uncooled or partially cooled process gas flow can be mixed with the process gas flow cooled by the heat transfer tubes in an outlet chamber upstream of the waste heat boiler outlet.
[0025] The temperature control device makes it possible to adjust the temperature of the process gas stream at the outlet of the waste heat boiler.
[0026] A temperature control device is coupled to the shaft at a second end and is designed to be adjusted by rotational movement of the shaft.
[0027] This can mean, for example, that a control baffle of the temperature control device rotates in the bypass duct, allowing the flow rate of the uncooled or partially cooled process gas stream to be adjusted between a first setting and a second setting. However, the temperature control device does not necessarily need to have a control baffle. To achieve the advantages described herein, it is sufficient for the temperature control device to be designed so that the temperature can be controlled via the rotation angle of the shaft.
[0028] The shaft and / or the temperature control device are preferably supported, in particular radially, and designed to absorb forces perpendicular to their axis. This has the advantage that frictional and fluid forces acting on the shaft and / or the temperature control device due to the process gas flow can be absorbed without damaging the components.
[0029] Preferably, the temperature of the process gas stream at the outlet of the waste heat boiler during operation ranges from 200° C. to 650° C. More preferably, the temperature of the process gas stream at the outlet of the waste heat boiler during operation ranges from 300° C. to 550° C. Particularly preferably, the temperature of the process gas stream at the outlet of the waste heat boiler during operation ranges from 400° C. to 500° C.
[0030] The waste heat boiler has an opening through which the shaft passes, and the opening is sealed by a shaft sealing element.
[0031] The waste heat boiler can be sealed relative to the environment by applying a radial force to the shaft in the circumferential direction from the shaft sealing element.
[0032] Shaft sealing elements are preferably used to prevent gases from the pressurized waste heat boiler from escaping through the opening. Escaping gases can not only be toxic but can also form explosive mixtures with air. Shaft sealing elements can be safety-related and ensure occupational health and safety.
[0033] The shaft, the shaft sealing element and the axial bearing are arranged on a common axis. This allows the sealing effect of the shaft sealing element to be maintained.
[0034] Preferably, the shaft sealing element has a degree of freedom in the axial direction and a degree of freedom in the rotational direction about the axis.
[0035] The actuator is arranged outside the waste heat boiler and is coupled to the shaft at a first end and is designed to realize rotational driving of the shaft.
[0036] Preferably, the actuator comprises a manual drive. More preferably, the actuator comprises a pneumatic drive. Particularly preferably, the actuator comprises both a pneumatic drive and a manual drive. To this end, the actuator is preferably directly coupled to the shaft. More preferably, the actuator is coupled to the shaft via a lever. Particularly preferably, the actuator is coupled to the shaft via a transmission.
[0037] Arranging the actuator outside the waste heat boiler has the advantage that the shaft can be driven at a location spaced apart from the waste heat boiler. This improves operator safety and prevents the actuator from being exposed to the temperature and corrosive conditions of the process gas.
[0038] The axial bearing is designed to counteract movement of the shaft towards the first end of the shaft. Preferably, the axial bearing has a degree of freedom in a rotational direction about the axis.
[0039] The axial bearing may have a first side and an opposing second side. Preferably, the axial bearing is designed as a plain bearing. More preferably, the axial bearing is designed as a rolling bearing, having rolling elements between the first and second sides. Forces can be transmitted from the first side to the second side, and vice versa, via the rolling elements.
[0040] The axial bearing may be designed to counteract a movement of the shaft in the direction of the first end of the shaft, wherein during operation a pressure difference between the waste heat boiler and the environment may generate a compressive force towards the first end of the shaft.
[0041] The compression force can be calculated by multiplying the pressure difference between the waste heat boiler and the environment by the area over which this pressure difference acts.
[0042] Preferably, the pressure difference of the process gas stream in the waste heat boiler relative to the environment is at least 20 bar. More preferably, the pressure difference of the process gas stream in the waste heat boiler relative to the environment is at least 40 bar.
[0043] The axial bearing may also be designed to counteract movement of the shaft in the direction of the first end of the shaft due to thermal expansion of the shaft.
[0044] Furthermore, the axial bearing may be designed to counteract movement of the shaft in the direction towards the second end of the shaft.
[0045] This component reliably controls the temperature of the process gas stream. To do this, it ensures safe and reliable adjustability of the temperature control during operation, despite the compressive forces caused by the pressure difference between the process gas stream and the surroundings in the waste heat boiler. This is achieved via an axial bearing.
[0046] The present invention discovered that in prior art solutions, the pressure difference between the waste heat boiler and the surrounding environment exerts a compressive force on the shaft in the direction of the lower pressure of the surrounding environment. This outward force generates significant friction, which impedes the rotational movement of the shaft. This friction can be so great that the shaft is no longer rotatable. Axial bearings make it possible to reduce or even completely avoid this effect.
[0047] In a preferred embodiment of the assembly, the axial bearing is arranged inside the waste heat boiler, and the axial bearing is arranged between the shaft sealing element and the temperature control device.
[0048] This embodiment has the advantage that, during operation, compressive forces generated by the pressure differential between the waste heat boiler and the environment can be absorbed via the axial bearing. The placement of the axial bearing between the shaft sealing element and the temperature control device prevents axial forces acting on the shaft sealing element due to the pressure differential. Preferably, only negligible axial forces (if any) from the shaft act on the shaft sealing element. This ensures a more reliable seal of the shaft sealing element against the environment, ensuring a more reliable seal between the waste heat boiler and the environment.
[0049] This embodiment also has the advantage that the temperature control device can reliably control the temperature during operation and that the shaft will not seize during operation despite the axial compressive forces on the shaft.
[0050] In a further preferred embodiment of the arrangement, the shaft sealing element and the axial bearing are arranged spaced apart from one another on the shaft.
[0051] An advantage of this embodiment is that axial forces on the axial bearing are not transferred into the shaft sealing element and the shaft sealing element cannot dissipate any axial forces.
[0052] In yet another preferred embodiment of the assembly, the shaft sealing element is arranged in an opening of the waste heat boiler, and the shaft passes through the opening sealed by the shaft sealing element.
[0053] An advantage of this embodiment is that the shaft sealing element is attached in a particularly space-saving manner.
[0054] This embodiment is preferably combined with the previous two embodiments.
[0055] A particular advantage is that the axial forces absorbed by the axial bearing and the HRSG sealed by the shaft sealing element are particularly space-saving and reliable. This results in minimal disruption to the HRSG air flow and fewer dead zones in the HRSG.
[0056] In a further preferred embodiment of the assembly, the axial bearing is arranged on a first side thereof on a stop of the shaft and is held on a second side thereof by the waste heat boiler.
[0057] This embodiment has the advantage that the axial bearing can transmit forces toward the waste heat boiler in the direction of the first end of the shaft. This embodiment also has the advantage that the shaft does not transmit any forces caused by pressure differences between the first end of the shaft and the axial bearing. This prevents or at least reduces axial forces acting on the shaft sealing element and the actuator. This makes it possible to avoid or at least reduce frictional forces opposing the rotational movement in the actuator caused by axial forces.
[0058] In another preferred embodiment of the assembly, the shaft sealing element is a stuffing box. The stuffing box comprises a stuffing box packing and a stuffing box flange, wherein the gap between the shaft and the box body / box is sealed by the stuffing box packing. The box body is preferably connected to the waste heat boiler via a friction-lock connection. The box body may also be part of the waste heat boiler.
[0059] The advantage of this embodiment is that the waste heat boiler is reliably sealed from the environment, but the shaft can continue to rotate.
[0060] In an alternative embodiment, an axial bearing is mounted on the shaft between the actuator and the shaft sealing element. The axial bearing is arranged on a stopper of the shaft on a first side and is retained on a second side, opposite the first side, by a retaining device. The retaining device is preferably arranged on the waste heat boiler.
[0061] An advantage of this embodiment is that the axial bearing is not in contact with the process gas.
[0062] In another preferred embodiment of the assembly, the assembly includes a hydrocarbon feedstock source, the feedstock source being connected to a reactant inlet of the reactor, and the reactant being supplied to the reactor via the reactant inlet.
[0063] In this embodiment, the assembly is not only applicable to operations using hydrocarbon reactants. Instead, such use is mandatory in this embodiment whenever a feedstock source is part of the assembly. Contemplated feedstock sources include any element that outputs hydrocarbons.
[0064] Another aspect of the present invention provides a method for operating the assembly. Synthesis gas for methanol synthesis is generated in a reactor. A process gas stream from the reactor is passed to a waste heat boiler. The temperature of the process gas stream at the waste heat boiler outlet is regulated by a temperature control device, namely, by adjusting the temperature control device via an actuator.
[0065] Advantages and features of the described assembly are applicable and transferable to the method and vice versa. The assembly is preferably adapted to operate according to the described method.
[0066] Another aspect of the present invention provides a use. The assembly is used to generate synthesis gas for methanol synthesis in a reactor. The generated synthesis gas preferably contains hydrogen and / or carbon monoxide.
[0067] The synthesis gas can particularly preferably be converted into methanol.
[0068] The advantages and features of the described components and methods are applicable and transferable to this application and vice versa. The components are preferably designed for use in accordance with this application. BRIEF DESCRIPTION OF THE DRAWINGS
[0069] The present invention will now be described in more detail with reference to the accompanying drawings. The drawings show particularly preferred exemplary embodiments, which are not intended to limit the present invention. The drawings and the relative dimensions shown therein are merely schematic. In the drawings:
[0070] Figure 1 : shows a schematic diagram of the components of the present invention for methanol synthesis,
[0071] Figure 2 : Shows Figure 1 Detailed view of the opening of the waste heat boiler in the assembly. DETAILED DESCRIPTION
[0072] Figure 1 A schematic diagram of an assembly 1 of the present invention for methanol synthesis is shown. Assembly 1 includes a reactor 2, a waste heat boiler 3, an actuator 4, a shaft 5, a shaft sealing element 6, an axial bearing 7, and a temperature control device 8. Assembly 1 also includes a hydrocarbon feedstock source 25 connected to a reactant inlet 26 of reactor 2.
[0073] In assembly 1, a hydrocarbon feedstock is converted into synthesis gas in reactor 2. Reactor 2 is suitable for combined reforming. The resulting synthesis gas, along with unconverted feedstock, is fed as a process gas stream to waste heat boiler 3. The temperature of the process gas stream in outlet chamber 30 of waste heat boiler 3 is regulated by temperature control device 8, which is adjusted via actuator 4.
[0074] The reactor 2 is suitable for both endothermic and exothermic reactions. The reactor 2 is designed to produce synthesis gas from a feedstock source 25.
[0075] A waste heat boiler 3 is connected to the reactor 2. For this purpose, a process gas stream flows via an inlet 21 into an inlet chamber 29 of the waste heat boiler 3. The process gas stream contains synthesis gas.
[0076] The waste heat boiler 3 includes heat transfer tubes 22. The waste heat boiler 3 has ports and connectors to allow fluid connection to the heat transfer tubes 22. The process gas stream is diverted from the inlet 21 to the heat transfer tubes 22 via the inlet chamber 29. The waste heat boiler 3 also includes ports and connectors to allow coolant to be introduced into the waste heat boiler 3 via the coolant inlet 23 and discharged from the waste heat boiler 3 via the coolant outlet 24 within the shell space 19 outside the heat transfer tubes 22 and between the heat transfer tubes.
[0077] The process gas stream can be cooled in the waste heat boiler 3. As the process gas stream flows through the heat transfer tubes 22 in the waste heat boiler 3, it transfers heat energy to the coolant via the walls of the heat transfer tubes 22. This causes the liquid coolant in the waste heat boiler 3 to evaporate, making the coolant in the waste heat boiler 3 biphasic. The coolant is removed from the waste heat boiler 3 via the coolant outlet 24. The coolant used is water.
[0078] The shaft 5, the shaft sealing element 6, and the axial bearing 7 are arranged on a common axis 9. The waste heat boiler 3 has an opening 10 through which the shaft 5 passes and which is sealed by the shaft sealing element 6. The actuator 4 is arranged outside the waste heat boiler 3. In contrast, the temperature control device 8 is arranged inside the waste heat boiler 3. The actuator 4 is coupled to the shaft 5 at a first end 11. The actuator 4 is designed to achieve rotational drive of the shaft 5. The temperature control device 8 is coupled to the shaft 5 at a second end 12 and is designed to be adjusted by the rotational movement of the shaft 5.
[0079] The temperature control device 8 includes a bypass pipe 27, by means of which at least a portion of the partially cooled process gas stream can be directed away from the heat transfer tubes 22. The partially cooled process gas stream from the temperature control device 8 can be mixed with the process gas stream cooled by the heat transfer tubes 22 in the outlet chamber 30. The temperature control device 8 enables the temperature of the process gas stream at the outlet 20 of the waste heat boiler 3 to be adjusted.
[0080] The axial bearing 7 is designed to counteract the movement of the shaft 5 in the direction of the first end 11 thereof. The axial bearing 7 is arranged in the waste heat boiler 3. The axial bearing 7 is arranged between the shaft sealing element 6 and the temperature control device 8.
[0081] Figure 2 Shown Figure 1 A detailed view of the opening 10 of the waste heat boiler 3 shows the assembly in FIG. The shaft sealing element 6 and the axial bearing 7 are arranged on the shaft 5, spaced apart from each other. The shaft sealing element 6 is also arranged in the opening 10 of the waste heat boiler 3. The axial bearing 7 is arranged on a stop 18 of the shaft 5 on its first side 13. The shaft 5, the shaft sealing element 6, and the axial bearing 7 are arranged on a common axis 9. The axial bearing 7 is held on its second side 14, opposite the first side 13, by a box 28 on the waste heat boiler 3. The shaft sealing element 6 is designed as a stuffing box. The shaft sealing element 6 includes a stuffing box packing 16 and a stuffing box flange 17. The gap between the shaft 5 and the box 28 is sealed by the stuffing box packing 16. The axial bearing 7 is designed to offset movement of the shaft 5 toward its first end 11. The axial bearing 7 is arranged within the waste heat boiler 3. The axial bearing 7 is arranged between the shaft sealing element 6 and the temperature control device 8. The axial bearing 7 is designed as a rolling bearing, with rolling elements 15 between the first side 13 and the second side 14. The force can be transferred from the first side 13 to the second side 14 via the rolling elements 15 and thus to the waste heat boiler 3 .
[0082] Reference Signs List
[0083] 1 Component
[0084] 2 reactors
[0085] 3 Waste Heat Boiler
[0086] 4 Actuators
[0087] 5-axis
[0088] 6 Shaft sealing elements
[0089] 7 Axial bearings
[0090] 8. Temperature control device
[0091] 9 Axis
[0092] 10 Opening
[0093] 11 First End
[0094] 12 Second End
[0095] 13 First side
[0096] 14 Second side
[0097] 15 Rolling elements
[0098] 16 Stuffing box packing
[0099] 17 Stuffing box flange
[0100] 18 Stopper
[0101] 19 Shell space
[0102] 20 Exit
[0103] 21 Entrance
[0104] 22 heat transfer tubes
[0105] 23 Coolant inlet
[0106] 24 Coolant outlet
[0107] 25 Raw material sources
[0108] 26 Reactant inlet
[0109] 27 Bypass pipe
[0110] 28 Body
[0111] 29 Entrance Room
[0112] 30 Exit Room
Claims
1. A component (1), comprising Reactor (2), Waste heat boiler (3), Actuator (4), Axis (5), Shaft sealing element (6), Axial bearings (7), and Temperature control device (8), in, The waste heat boiler (3) is connected to the reactor (2), wherein the shaft (5), the shaft sealing element (6) and the axial bearing (7) are arranged on a common axis (9), The waste heat boiler (3) has an opening (10), the shaft (5) passes through the opening, and the opening is sealed by the shaft sealing element (6). Wherein, the actuator (4) is arranged outside the waste heat boiler (3), Wherein, the temperature control device (8) is arranged inside the waste heat boiler (3), wherein the actuator (4) is coupled to the shaft (5) at a first end (11), wherein the actuator (4) is designed to realize the rotational drive of the shaft (5), wherein the temperature control device (8) is coupled to the shaft (5) at a second end (12) and is designed to be adjusted by a rotational movement of the shaft (5), The axial bearing (7) is designed to counteract the movement of the shaft (5) towards its first end (11).
2. Assembly (1) according to claim 1, wherein The axial bearing (7) is arranged inside the waste heat boiler (3), and The axial bearing (7) is arranged between the shaft sealing element (6) and the temperature device (8).
3. Assembly (1) according to claim 1, wherein The axial bearing (7) is arranged outside the waste heat boiler (3), and wherein the axial bearing (7) is arranged between the actuator (4) and the shaft sealing element (6).
4. Assembly (1) according to any one of the preceding claims, wherein The shaft sealing element (6) and the axial bearing (7) are arranged on the shaft (5) at a distance from each other.
5. Assembly (1) according to any one of the preceding claims, in, The shaft sealing element (6) is arranged in an opening (10) of the waste heat boiler (3).
6. Assembly (1) according to any one of the preceding claims, in, The axial bearing (7) is arranged on a first side thereof on a stop (18) of the shaft (5) and is held by the waste heat boiler (3) on a second side thereof opposite the first side (13).
7. Assembly (1) according to any one of the preceding claims, wherein The shaft sealing element (6) is a stuffing box comprising a stuffing box packing (16) and a stuffing box flange (17), wherein a gap between the shaft (5) and the box body (28) is sealed by the stuffing box packing (16).
8. Assembly (1) according to any one of the preceding claims, comprising a source (25) of hydrocarbon feedstock connected to a reactant inlet (26) of the reactor (2).
9. A method for operating an assembly (1) according to any one of the preceding claims, wherein: Synthesis gas for methanol synthesis is generated in the reactor (2), wherein a process gas stream from the reactor (2) is fed into the waste heat boiler (3), wherein the temperature of the process gas stream at the outlet (20) of the waste heat boiler (3) is regulated via the temperature control device (8) in the following manner, i.e., the temperature control device (8) is adjusted via the actuator (4).
10. Use of the assembly (1) according to any one of claims 1 to 8 for producing synthesis gas for methanol synthesis in the reactor (2).