CN114832991A - System for spraying catalyst for winding type heat exchange tube bundle - Google Patents

System for spraying catalyst for winding type heat exchange tube bundle Download PDF

Info

Publication number
CN114832991A
CN114832991A CN202210566184.2A CN202210566184A CN114832991A CN 114832991 A CN114832991 A CN 114832991A CN 202210566184 A CN202210566184 A CN 202210566184A CN 114832991 A CN114832991 A CN 114832991A
Authority
CN
China
Prior art keywords
catalyst
heat exchange
spraying
wound
exchange tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210566184.2A
Other languages
Chinese (zh)
Other versions
CN114832991B (en
Inventor
代玉强
徐琴琴
牛硕磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN202210566184.2A priority Critical patent/CN114832991B/en
Publication of CN114832991A publication Critical patent/CN114832991A/en
Application granted granted Critical
Publication of CN114832991B publication Critical patent/CN114832991B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
    • B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0278—Arrangement or mounting of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A system for spraying a catalyst on a wound heat exchange tube bundle relates to the fields of chemical engineering and industrial catalysis. The system for spraying the catalyst by the wound heat exchange tube bundle comprises a catalyst conveying and spraying unit, a heating medium conveying unit, a driving unit and a wound tube prefabricating unit. The system transports, sprays and recovers catalyst feed liquid onto the rotary winding type heat exchange tube bundle through the catalyst transporting and spraying unit, and introduces a heat medium reaching a preset temperature into the heat medium transporting unit through the heat medium transporting unit under the state that the driving unit rotates so as to realize the drying and roasting of the catalyst. The system improves the mode of filling catalyst particles in the traditional heat exchange type fixed bed reactor, and the whole heat exchange catalyst preparation is realized by spraying the catalyst on the wound heat exchange tube bundle, so that the catalyst filling and unloading are more convenient, and the large-flux heat exchange is realized; the spraying, drying and roasting are carried out in the same step under the continuous rotation of the wound heat exchange tube bundle, so that the spraying efficiency and the spraying quality are ensured; the system is suitable for the preparation of various catalyst systems.

Description

System for spraying catalyst for winding type heat exchange tube bundle
Technical Field
The invention relates to the fields of chemical engineering and industrial catalysis, in particular to a spraying system for spraying a catalyst on a wound heat exchange tube bundle.
Background
The heat exchange type fixed bed reactor is a reactor commonly used in the chemical production process, and is mainly characterized in that heat exchange tube bundles are arranged in the reactor, and solid granular catalysts are filled between the heat exchange tube bundles or in the heat exchange tube bundles, so that the heat exchange between a catalyst bed layer and the outside can be realized during the chemical reaction.
The catalyst particles and the filling condition thereof in the reactor have great influence on the catalytic reaction, and the particle size, the stacking density and the active substance attachment condition of the catalyst particles directly influence the reaction rate. However, the loading and unloading of catalyst particles is complicated, and since the catalyst particles are fixed in position and distributed in the bed, the reaction heat is easily distributed unevenly, resulting in local temperature runaway. When the heat of chemical reaction is large, the heat dissipation solution mainly increases the number of heat exchange tube bundles and heat exchange tube passes, and the increase of heat dissipation flux is limited.
Disclosure of Invention
In order to solve the technical problem, the invention provides a system for spraying a catalyst on the outer side of a wound heat exchange tube bundle. The preparation of the integral heat-exchangeable catalyst is realized by spraying the catalyst on the outer side of the wound heat exchange tube bundle, so that the catalyst is more convenient to load and unload, and meanwhile, the large-flux heat exchange is realized; the spraying, drying and roasting are carried out in the same step under the continuous rotation of the wound heat exchange tube bundle, so that the spraying efficiency and the spraying quality are ensured; the catalyst assembly prepared by the system is suitable for various catalyst systems.
The technical scheme of the invention is as follows: the utility model provides a system for wound form heat exchanger tube bundles spraying catalyst includes catalyst transportation and spraying unit, heat medium transportation unit, drive unit, catalyst transportation and spraying unit contain catalyst case, catalyst delivery pump, spray line and meet the liquid dish, and the catalyst case passes through the catalyst delivery pump and connects the spray line, meets the liquid dish and establishes in the below of spray line, connects the leakage fluid dram of liquid dish to connect the catalyst case.
The driving unit comprises a left rotating device, a left supporting device, a right supporting device and a right rotating device, the wound heat exchange tube bundle is arranged below the liquid spraying pipe and is connected with the upper side of the liquid collecting disc, the inlet end of the wound heat exchange tube bundle is connected with the right rotating device through the right supporting device, and the outlet end of the wound heat exchange tube bundle is connected with the left rotating device through the left supporting device.
The heat medium transportation unit comprises a heat medium supply device and a heat medium circulating pump, and the heat medium supply device, the heat medium circulating pump, the right rotating device and the left rotating device of the driving unit are sequentially connected to form a circulation loop of the heat medium.
The right supporting device comprises a transition pipe section and a base, a gear ring and an annular rail are arranged on the outer wall of the transition pipe section, a motor is connected with the gear ring through a reduction box, the lower part of the annular rail is connected with two idler wheels fixed on the first base in a sliding mode, and the wide-mouth end of the transition pipe section is connected with a pipe plate of the winding type heat exchange pipe bundle.
The right rotating device comprises a hollow rotating shaft, a gland, a shell and a fixed end cover, the left end of the hollow rotating shaft is connected with the thin-opening end of the transition pipe section, one end of the shell sleeved outside is connected with the gland, the other end of the shell is connected with the fixed end cover, and the right rotating device is fixed on the second base through a support.
Two annular rails are arranged on the outer wall of the transition pipe section, two rollers which are connected with the two annular rails in a sliding mode and are located on the same side are connected through roller shafts, and two ends of each roller shaft are fixed on the first base through supports.
The annular track is composed of two circular rings sleeved on the outer wall of the transition pipe section and the pipe wall of the transition pipe section.
The bottom of hydrojet pipe sets up a plurality of shower nozzles, the shower nozzle adopts square shower nozzle, oval-shaped shower nozzle, circular shower nozzle or fan-shaped shower nozzle.
The heat medium supply device is used for generating a heat medium, and the heat medium is selected from heat conduction oil, hot air, steam and molten salt.
The wound heat exchange tube bundle is wound layer by adopting a tube winding machine, the layer interval is 2-100mm, the layer number is 1-200 layers, the layer tube interval is 0.2-50mm, and the diameter of the used heat exchange tube is 0.6-38 mm.
Specifically, the length of the whole wound heat exchange tube bundle is 50-15000mm, and the diameter of the whole wound heat exchange tube bundle is 50-50000 mm.
A method for spraying a catalyst on a wound heat exchange tube bundle adopts the system for spraying, drying and roasting.
A method for spraying catalyst on a wound heat exchange tube bundle comprises the steps of winding, spraying, drying and roasting the wound heat exchange tube bundle layer by layer.
The invention has the beneficial effects that: based on the disclosure of the technical scheme, the system for spraying the catalyst on the wound heat exchange tube bundle provided by the invention has the following advantages:
(1) the catalyst shower nozzle is arranged above the wound heat exchange tube bundle, the length range of the nozzle spraying is matched with the length of the wound heat exchange tube bundle, and the liquid receiving disc is arranged below the wound heat exchange tube bundle, so that the excess materials can be recycled, the waste is reduced, and the utilization rate of the catalyst liquid is improved.
(2) The winding type heat exchange tube bundle rotates around the axis at 360 degrees at a slow speed, so that the catalyst material is uniformly sprayed on the tube bundle, the catalyst spraying efficiency is ensured, and a plurality of spraying periods can be completed in a short time.
(3) The driving device realizes that the wound heat exchange tube bundle can circulate the heat medium in a non-stop rotating state, can timely and continuously heat, dry and roast the catalyst material liquid sprayed on, and ensures the relatively stable temperature of the heat medium during roasting due to continuous circulation of the heat medium, thereby further improving the quality of the sprayed catalyst.
(4) Through the processes of continuous rotation, spraying, drying, roasting and the like, the catalyst is coated on the wound heat exchange tube bundle, and the loading efficiency and quality of the catalyst are improved compared with those of a traditional mode; when the catalyst is filled, the winding type heat exchange tube bundle can be drawn out and placed in the system for spraying, and after the spraying operation is finished, the winding type heat exchange tube bundle is integrally filled into the reactor, so that the charging time is reduced, and the problems of catalyst particle manufacturing and storage are avoided.
(5) The system is suitable for preparation of various catalytic reaction catalysts, such as methanol reforming reaction, VOC catalytic combustion reaction and the like, and is also suitable for various corresponding catalyst systems; the catalyst is changed from the traditional particle state into a film shape and is attached to the wound heat exchange tube bundle, so that the bed lamination is reduced, the internal diffusion is reduced, and the catalytic efficiency is improved; the wound heat exchange tube bundle sprayed by the system can quickly input or remove a large amount of heat through radial transmission of the outer wall in the reaction process.
Drawings
FIG. 1 is a schematic diagram of a system for catalyst spray application to a bundle of wound heat exchange tubes.
Fig. 2 is a schematic structural view of the driving unit of fig. 1.
Fig. 3 is a schematic structural view of the right support device in fig. 2.
Fig. 4 is a schematic structural view of the right rotating apparatus in fig. 2.
Fig. 5 is a sectional view a-a in fig. 3.
Fig. 6 is a sectional view B-B in fig. 3.
Fig. 7 is a partially enlarged view of a in fig. 2.
Fig. 8 is a partially enlarged view B in fig. 2.
Fig. 9 is a schematic view of the configuration of the wound heat exchanger tube bundle of fig. 2.
Fig. 10 is a partially enlarged view of C in fig. 6.
In the figure, 1, a catalyst box, 2, a catalyst delivery pump, 2a, a first valve, 3, a liquid spraying pipe, 4, a liquid receiving disc, 4a, a second valve, 5, a left rotating device, 6, a left supporting device, 601, a third flange ring, 602, a second tube plate, 603, a fourth flange ring, 7, a winding type heat exchange tube bundle, 8, a right supporting device, 801, a first tube plate, 802, a rotating universal plug seal, 803, a transition tube section, 804, a first flange ring, 805, a motor, 806, a reduction box, 807, a gear ring, 808, a first base, 809, an annular track, 810, a roller shaft, 811, a roller, 812, a bearing, 813, a roller shaft bracket, 814, a second flange ring, 815, a gear, 9, a right rotating device, 901, a hollow rotating shaft, 902, a gland, 903, a shell, 904, a ball ring, 905, a spring gasket, 906, a spring, 907, a fixed end cover, 908 and a sealing ring, 909. sealing gasket 910, bolt 911, rotating device support 912, second base 10, heat medium supply device 11, heat medium circulating pump 12 and third valve.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode as follows:
fig. 1 shows a schematic structural diagram of a system for spraying a catalyst on a wound heat exchange tube bundle, in which the system for spraying a catalyst on a wound heat exchange tube bundle comprises a catalyst transporting and spraying unit, a heat medium transporting unit and a driving unit, the catalyst transporting and spraying unit comprises a catalyst box 1, a catalyst delivery pump 2, a liquid spraying pipe 3 and a liquid receiving disc 4, the catalyst box 1 is connected with the liquid spraying pipe 3 through the catalyst delivery pump 2, the liquid receiving disc 4 is arranged below the liquid spraying pipe 3, and a liquid outlet of the liquid receiving disc 4 is connected with the catalyst box 1.
The driving unit comprises a left rotating device 5, a left supporting device 6, a right supporting device 8 and a right rotating device 9, the winding type heat exchange tube bundle 7 is arranged below the liquid spraying pipe 3 and above the liquid receiving disc 4, the inlet end of the winding type heat exchange tube bundle is connected with the right rotating device 9 through the right supporting device 8, and the outlet end of the winding type heat exchange tube bundle is connected with the left rotating device 5 through the left supporting device 6 (as shown in fig. 2).
The heat medium transportation unit comprises a heat medium supply device 10 and a heat medium circulating pump 11, wherein the outlet of the heat medium supply device 10 is connected with the right port of the right rotating device through the heat medium circulating pump 11, and the left port of the left rotating device 5 is connected with the inlet of the heat medium supply device 10;
the right supporting device 8 comprises a transition pipe section 803 and a base 808, a gear ring 807 and two annular rails 809 are arranged on the outer wall of the transition pipe section 803, the motor 805 is connected with the gear ring 807 through a reduction gearbox, the annular rails 809 are connected with two rollers 811 arranged below the transition pipe section 803 in a sliding manner, the two rollers positioned on the same side of the transition pipe section 803 are connected through a roller shaft 810, and two ends of the roller shaft 810 are fixed on the first base 808 through a support. The wide open end of transition tube section 803 joins the tube sheet at the end of the bundle 7 of wound heat exchange tubes (as shown in fig. 3, 5, 6 and 10).
The annular rail 809 is composed of two rings sleeved on the outer wall of the transition pipe section 803 and the pipe wall of the transition pipe section 803, and the annular rail 809 rotates on the rollers during the rotation process of the transition pipe section 803.
The right rotating device 9 comprises a hollow rotating shaft 901, a gland 902, a casing 903 and a fixed end cover 907, the left end of the hollow rotating shaft 901 is connected with the thin-opening end of the transition pipe section 803, one end of the casing 903 sleeved outside is connected with the gland 902, the other end of the casing 903 is connected with the fixed end cover 907, and the right rotating device 9 is fixed on a second base 912 through a bracket (as shown in fig. 4).
The length of hydrojet pipe 3 matches with the length of the wound form heat exchanger tube bank of treating the spraying, and the bottom of hydrojet pipe 3 sets up a plurality of shower nozzles, and the shower nozzle adopts fan-shaped to touch the head.
The bottom of the liquid spraying pipe is provided with a plurality of spray heads, and the spray heads adopt square spray heads, oval spray heads, circular spray heads or fan-shaped spray heads.
The heat medium supply device is used for generating a heat medium, and the heat medium is selected from heat conduction oil, hot air, steam and molten salt.
In some embodiments, the heat medium supply device 10 uses an electrically heated heat medium furnace, and the heat medium is heat transfer oil. The electric heating heat medium furnace can heat a heat medium to a preset temperature, the electric heating heat medium furnace is connected with a port of a fixed end cover 907 on the right rotating device 9 through a heat medium conveying pipe and a heat medium conveying pump, a heat medium circulating pump pumps the heat medium into a driving unit, the heat medium enters the inside of the winding type heat exchange tube bundle through the driving unit, flows out of the port of the fixed end cover on the left rotating device 5 and returns to the electric heating heat medium through a pipeline, and therefore a heat medium circulating loop is formed.
In some embodiments, the left rotating device 5 and the right rotating device 9 are identical in structure and are symmetrically arranged, the left tube plate of the wound heat exchange tube bundle is connected with the wide opening end of the left supporting device 6, and the right tube plate of the wound heat exchange tube bundle 7 is connected with the wide opening end of the right supporting device 8.
In some embodiments, the tube winding machine can bend and wind single-layer or multi-layer heat exchange tube bundles according to the diameter and the pitch of the heat exchange tubes, and can continue to bend and wind the heat exchange tubes on the sprayed tube bundles.
In some embodiments, a housing 903 of the right rotating device 9 is sleeved outside the hollow rotating shaft 901, a right end portion of the housing 903 is connected with a left end of a fixed end cover 907, a ball ring 904 integrated with the hollow rotating shaft 901 is arranged on the hollow rotating shaft 901, a sealing ring 908 is arranged between the ball ring 904 and the gland 902, the sealing ring 908, a spring gasket 905, a spring 906, a spring gasket 905 and the sealing ring 908 are arranged between the ball ring 904 and the fixed end cover 907 from left to right in sequence, sealing gaskets 909 are arranged at joints of the housing 903, the gland 902 and the fixed end cover 907, the housing 903 is connected with the gland 902 and the fixed end cover 907 by bolts 910, and the rotating device 9 is arranged on a second base 912 (a square steel base) through a rotating device support 911. During operation of the system, hollow shaft 901 remains rotating while stationary end cap 907, housing 903, gland 902, etc. remain stationary. The heat medium generated by heating of the electric heating heat medium furnace enters through the right port of the fixed end cover 907 of the right rotating device 9.
In some embodiments, the thin-mouth end of the transition pipe section 803 is connected to the hollow rotating shaft 901 of the right rotating device 9 through a first flange ring 804, the wide-mouth end is connected to the first tube sheet 801 of the wound heat exchange tube bundle through a second flange ring 814, a rotary flooding plug seal 802 is arranged at the connection of the first flange ring and the transition pipe section, and a rotary flooding plug seal is arranged at the connection of the second flange ring and the first tube sheet 801 on the wound heat exchange tube bundle. Two annular tracks on the transition pipe section are respectively attached to two rollers below the transition pipe section, two rollers 811 on the same side of the transition pipe section 803 are connected with a roller shaft 810 through a bearing 812, two ends of the roller shaft are respectively fixed on a first base 808 through a roller shaft support 813, a motor 805 is arranged on a square steel base, a reduction gearbox 806 is connected with the motor 805, and a gear ring 807 is connected with the reduction gearbox 806. The motor drives the gear inside the reduction gearbox to rotate, the gear inside the reduction gearbox is meshed to rotate to reduce the rotating speed of the rotating shaft of the reduction gearbox, the rotating shaft of the reduction gearbox is connected with the gear ring surrounding the transition pipe section for one circle through the gear 815, the gear 815 is meshed with the gear ring to drive the transition pipe section to rotate, and when the system runs, the motor enables the transition pipe section to rotate at a low speed through the reduction gearbox.
In some embodiments, the tube plates at the two ends of the bundle 7 are different in diameter, and the diameter of the second tube plate 602 is slightly larger than that of the first tube plate 803, so that the left support device 6 and the right rotating device 8 are connected to the two ends of the bundle 7 in different manners, the wide opening end of the left support device 6 is connected to the second tube plate 602 through the third flange 601, the fourth flange ring 603, and a seal is provided at the connection. The wide open end of right rotary device 8 is connected to first tubesheet 801 by second flange 814 (as shown in fig. 7 and 8).
In some embodiments, the system for spraying the catalyst on the bundle of wound heat exchange tubes continuously supplies and sprays the catalyst through the catalyst transportation and spraying unit, the heat medium transportation unit circulates and flows the heat medium, and the driving unit enables the bundle of wound heat exchange tubes to spray, dry and bake under the condition of continuous rotation. Before spraying, the heat exchange tube is bent and wound by a tube winding machine, a single layer or multiple layers of heat exchange tubes are wound according to the diameter and the thread pitch of the heat exchange tubes, the wound heat exchange tube bundle is transferred to a driving unit and is respectively connected with a supporting device, then an electric heating heat medium furnace is started, after the heat medium is heated to a preset temperature, a third valve 12 is opened, a heat medium circulating pump 11 is started to send the heat medium to a right rotating device 9, the heat medium enters a wound heat exchange tube bundle 7 and flows out of a left rotating device 5 and flows back to the electric heating heat medium furnace, the heat medium is circularly led into the wound heat exchange tube bundle 7, then a motor is started, in order to ensure stable and uniform spraying, a transition tube section 803 is kept at a lower rotating speed through the action of a reduction box, the transition tube section 803 further drives the whole wound heat exchange tube bundle 7 to rotate at a slow speed, then, a first valve 2a is opened, a catalyst conveying pump 2 is started, catalyst feed liquid is evenly sprayed on the surface of the tube bundle from a proper height, the temperature of the introduced heat-conducting medium is adjusted to carry out the roasting process after one-time spraying is finished, the rest material dropped by spraying falls to the liquid receiving disc 4, the second valve 4a is opened, and the catalyst is returned to the catalyst box 1 through the feed liquid recovery pipe. And after the required spraying times are finished, transferring the wound heat exchange tube bundle 7 to a tube winding machine to continuously bend and wind the heat exchange tubes, transferring the wound heat exchange tube bundle 7 to a driving unit after the required layers of tube bundles are bent, and repeating the spraying, drying and roasting processes.
In some embodiments, the wound heat exchange tube bundle is structured as shown in fig. 9, the wound heat exchange tube bundle wound layer by using a tube winding machine has a layer spacing of 2-100mm, a layer number of 1-200, a layer tube spacing of 0.2-50mm, and a diameter of 0.6-38 mm.
In some embodiments, the layer-to-layer distance of the wound heat exchange tube bundle wound layer by using the tube winding machine is 2-50mm, the layer number is 1-100, the layer-to-layer tube distance is 1-35mm, and the diameter of the used heat exchange tube is 3-38 mm.
In some embodiments, the entire wound heat exchanger tube bundle is 50-15000mm in length and 50-50000mm in diameter. The same layer of the wound heat exchange tube bundle can be wound by one heat exchange tube, and a plurality of heat exchange tubes can also be simultaneously wound, and the winding directions of the heat exchange tubes in different layers can be different.
Example 1
The following method aims at the hydrogen production reaction by reforming methanol steam and prepares Cu/CeO outside a wound heat exchange tube bundle 2 /Al 2 O 3 Thin film catalyst example:
first, CeO is sprayed by the system 2 /Al 2 O 3 And (3) a carrier. Starting an electric heating heat medium furnace, heating the heat medium to a preset temperature of 80 ℃, opening a third valve 12, starting a heat medium circulating pump to deliver the heat medium to a wound heat exchange tube bundle, starting a motor to enable the rotation speed of the tube bundle to be 15 DEG/s, opening a first valve 2a, starting a catalyst delivery pump 2, and mixing the prepared gamma-AlOOH solution and CeO with the particle size of 50nm 2 Uniformly spraying a catalyst liquid (solid content is 10 wt%) mixed with powder on the surface of a tube bundle from a proper height, wherein the flow rate of a spray head is about 2L/min, the diameter of a formed fog drop is about 100 mu m, completing a spraying process for 2min, then heating a heat medium to 150 ℃ for drying, spraying to form a film with the thickness of about 10 mu m, then heating the heat medium to 500 ℃ for roasting, and repeating the process for about 9 times to obtain CeO with the thickness of about 100 mu m 2 /Al 2 O 3 Carrier film with specific surface area up to 150m 2 (ii) in terms of/g. The rest material dropped by spraying falls to a liquid receiving disc and is openedThe second valve 4a is returned to the catalyst tank 1 through a feed liquid recovery pipe.
Next, Cu (NO) is sprayed by the system 3 ) 2 The solution (metal loading 15 wt%) was loaded with Cu. Heating the heat medium to a preset temperature of 120 ℃, adjusting the rotation speed of the tube bundle to 10 DEG/s, and preparing the prepared Cu (NO) 3 ) 2 Uniformly spraying the solution on the surface of the tube bundle from a proper height, wherein the flow rate of a spray head is about 1.5L/min, the diameter of a formed fog drop is about 50 μm, completing a spraying process within 5min, heating a heat medium to 450 ℃ for roasting, repeating the process for 2 times, loading the wound heat exchange tube bundle coated with the catalyst into a reactor for in-situ reduction, and introducing 5% H into the reactor 2 -N 2 Mixed gas of (2) at 5 o The temperature rises to 280 ℃ at a rate of C/min o C, reducing for 3 hours to obtain film-shaped Cu/CeO 2 /Al 2 O 3 A catalyst. After the preparation is finished, a heat exchange medium is introduced into the tube side, and a reactant is introduced into the shell side, so that the catalyst can be used for the hydrogen production reaction by methanol steam reforming.
It should be noted that the above specific embodiments are exemplary descriptions of technical solutions of the present invention, and the implementation of the present invention is not limited by the above; while the invention has been described in detail with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and equivalents can be made to the embodiments of the invention, or other reactions in which the concepts and solutions of the invention are directly applied are within the scope of the invention as claimed.

Claims (9)

1. A system for spraying a catalyst by a winding type heat exchange tube bundle comprises a catalyst conveying and spraying unit, a heating medium conveying unit and a driving unit, and is characterized in that the catalyst conveying and spraying unit comprises a catalyst box (1), a catalyst delivery pump (2), a liquid spraying pipe (3) and a liquid receiving disc (4), the catalyst box (1) is connected with the liquid spraying pipe (3) through the catalyst delivery pump (2), the liquid receiving disc (4) is arranged below the liquid spraying pipe (3), and a liquid discharging port of the liquid receiving disc (4) is connected with the catalyst box (1);
the driving unit comprises a left rotating device (5), a left supporting device (6), a right supporting device (8) and a right rotating device (9), the wound heat exchange tube bundle (7) is arranged below the liquid spraying pipe (3) and above the liquid receiving disc (4), one end of the wound heat exchange tube bundle (7) is connected with the right rotating device (9) through the right supporting device (8), and the other end of the wound heat exchange tube bundle is connected with the left rotating device (5) through the left supporting device (6);
the heat medium transportation unit comprises a heat medium supply device (10) and a heat medium circulating pump (11), wherein the heat medium supply device (10), the heat medium circulating pump (11), a right rotating device (9) and a left rotating device (5) of the driving unit are sequentially connected to form a circulating loop of the heat medium;
the right supporting device (8) comprises a transition pipe section (803) and a base (808), a gear ring (807) and an annular track (809) are arranged on the outer wall of the transition pipe section (803), the motor (805) is connected with the gear ring (807) through a reduction gearbox, the annular track (809) is connected with two rollers (811) fixed on the first base (808) in a sliding manner, and the wide-mouth end of the transition pipe section (803) is connected with a pipe plate of a winding type heat exchange pipe bundle (7);
the right rotating device (9) comprises a hollow rotating shaft (901), a gland (902), a shell (903) and a fixed end cover (907), the left end of the hollow rotating shaft (901) is connected with the thin-opening end of the transition pipe section (803), one end of the shell (903) sleeved outside is connected with the gland (902), the other end of the shell (903) is connected with the fixed end cover (907), and the right rotating device (9) is fixed on the second base (912) through a bracket;
the left rotating device (5) and the right rotating device (9) are identical in structure, and the left supporting device (6) and the right supporting device (8) are identical in structure.
2. The system for spraying the catalyst for the wound bundle according to claim 1, wherein the outer wall of the transition pipe section (803) is provided with two annular rails (809), two rollers (811) which are connected with the two annular rails (809) in a sliding manner and are arranged at the same side are connected through a roller shaft (810), and two ends of the roller shaft (810) are fixed on the first base (808) through a bracket.
3. The system for spraying the catalyst for the wound bundle according to claim 2, characterized in that the annular track (809) is composed of two circular rings sleeved on the outer wall of the transition pipe section (803) and the pipe wall of the transition pipe section (803).
4. The system for catalyst spraying of the wound bundle according to claim 1, characterized in that the bottom of the spray pipe (3) is provided with a plurality of spray heads, and the spray heads are square spray heads, oval spray heads, circular spray heads or fan spray heads.
5. The system for coiled heat exchanger bundle catalyst injection according to claim 1, wherein the heat medium supply device (10) is used to generate a heat medium selected from the group consisting of thermal oil, hot air, steam, molten salts.
6. The system for spraying the catalyst on the wound heat exchange tube bundle as recited in claim 1, wherein the wound heat exchange tube bundle (7) is wound layer by using a tube winding machine, the layer spacing is 2-100mm, the number of layers is 1-200, the tube spacing of the same layer is 0.2-50mm, and the diameter of the used heat exchange tube is 0.6-38 mm.
7. The system for spraying the catalyst for the wound heat exchange tube bundle as recited in claim 6, wherein the wound heat exchange tube bundle (7) has a layer interval of 2-50mm, a layer number of 1-100 layers, a layer tube interval of 1-35mm, and a diameter of the used heat exchange tube of 3-38 mm.
8. A method for spraying a catalyst on a bundle of wound heat exchange tubes, characterized in that the system of claim 1 is used for spraying, drying and calcining.
9. The method for spraying catalyst on a bundle of wound heat exchange tubes according to claim 8, characterized in that the bundle of wound heat exchange tubes (7) according to claim 5 is used for spraying, drying and calcining.
CN202210566184.2A 2022-05-24 2022-05-24 System for spraying catalyst for winding type heat exchange tube bundle Active CN114832991B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210566184.2A CN114832991B (en) 2022-05-24 2022-05-24 System for spraying catalyst for winding type heat exchange tube bundle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210566184.2A CN114832991B (en) 2022-05-24 2022-05-24 System for spraying catalyst for winding type heat exchange tube bundle

Publications (2)

Publication Number Publication Date
CN114832991A true CN114832991A (en) 2022-08-02
CN114832991B CN114832991B (en) 2023-01-20

Family

ID=82572896

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210566184.2A Active CN114832991B (en) 2022-05-24 2022-05-24 System for spraying catalyst for winding type heat exchange tube bundle

Country Status (1)

Country Link
CN (1) CN114832991B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116199185A (en) * 2023-05-06 2023-06-02 浙江百能科技有限公司 High-temperature catalytic hydrogen production reaction system and method by utilizing waste water in coal grading manner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080978A2 (en) * 1981-11-27 1983-06-08 VIANOVA S.p.A. Standard line plant for the surface treatment of preheating, brushing, painting, drying and marking of metallic tubes
KR100898838B1 (en) * 2008-06-09 2009-05-22 신광공업 주식회사 3 layers polyethylenes and polyurea coating device for steel tube and coating method
CN105618299A (en) * 2014-11-25 2016-06-01 斯奈克玛 System for painting a splayed end of a hollow shaft on a rotary paint bench
KR101724419B1 (en) * 2016-10-17 2017-04-10 (주) 케이 앤 지 스틸 Within the steel pipe coating apparatus having a polypropylene coating layer for improving adhesion improving outside diameter and illuminance
CN206509902U (en) * 2016-12-30 2017-09-22 青岛理工大学 Heat exchanger refrigeration low-temperature cooling nano-fluid minimal quantity lubrication supply system
US20180015499A1 (en) * 2016-07-12 2018-01-18 Doosan Heavy Industries & Construction Co., Ltd System for coating heat transfer tube for condenser

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080978A2 (en) * 1981-11-27 1983-06-08 VIANOVA S.p.A. Standard line plant for the surface treatment of preheating, brushing, painting, drying and marking of metallic tubes
KR100898838B1 (en) * 2008-06-09 2009-05-22 신광공업 주식회사 3 layers polyethylenes and polyurea coating device for steel tube and coating method
CN105618299A (en) * 2014-11-25 2016-06-01 斯奈克玛 System for painting a splayed end of a hollow shaft on a rotary paint bench
US20180015499A1 (en) * 2016-07-12 2018-01-18 Doosan Heavy Industries & Construction Co., Ltd System for coating heat transfer tube for condenser
KR101724419B1 (en) * 2016-10-17 2017-04-10 (주) 케이 앤 지 스틸 Within the steel pipe coating apparatus having a polypropylene coating layer for improving adhesion improving outside diameter and illuminance
CN206509902U (en) * 2016-12-30 2017-09-22 青岛理工大学 Heat exchanger refrigeration low-temperature cooling nano-fluid minimal quantity lubrication supply system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116199185A (en) * 2023-05-06 2023-06-02 浙江百能科技有限公司 High-temperature catalytic hydrogen production reaction system and method by utilizing waste water in coal grading manner
CN116199185B (en) * 2023-05-06 2023-07-18 浙江百能科技有限公司 High-temperature catalytic hydrogen production reaction system and method by utilizing waste water in coal grading manner

Also Published As

Publication number Publication date
CN114832991B (en) 2023-01-20

Similar Documents

Publication Publication Date Title
CN114832991B (en) System for spraying catalyst for winding type heat exchange tube bundle
CN1152738C (en) Reactor, in particular for exothermic reactions
CN207154017U (en) A kind of more spray gun automatic spray apparatus for preparing fuel cell membrane electrode
CN103240036B (en) A kind of heat transfer reactor of Anti-temperature difference stress and combinations thereof device and application
CN108404821A (en) A kind of energy-saving and high efficient radial direction methanol reactor
CN102895922A (en) Industrial plate type reactor for preparing glycol by hydrogenating oxalate or preparing alcohol by hydrogenating ester
EP3453998A1 (en) System for energy storage including heat exchangers
CN202638419U (en) Stirring heat-exchanging board heat-transferring reaction device
CN202876771U (en) Industrialized plate type reactor for preparing glycol by oxalate hydrogenation or alcohol by ester hydrogenation
CN113251663A (en) High-temperature molten salt storage tank preheating and heating device and method
CN109971511B (en) Coal hydro-gasification method
CN104164265A (en) Technique and device for performing slurry reactor methanation by utilizing monolithic catalyst
CN113720188B (en) Short-distance heat storage and transmission system with heat storage balls and operation method thereof
CN214810705U (en) Wound tube type reactor and synthesis system for methyl isobutyl ketone
CN215028787U (en) Stirring reaction kettle with composite stirrer
CN214936050U (en) Hydrogen production device
CN109621880B (en) CO (carbon monoxide)2System and method for preparing furfural by biomass continuous hydrothermal method under atmosphere
CN115228386B (en) Winding tube type catalyst component, high-flux heat exchange reactor and preparation method
CN218167043U (en) Reaction device for producing high-quality trivalent chromium
CN1292303A (en) Multi-phase catalytic three-phase reaction isothermal operation
CN220393621U (en) Waste multi-parallel thermal cracking system
CN214681671U (en) Reactor for producing bis (2-propyl) heptyl terephthalate
CN114272872A (en) Barrel type reactor
CN217614313U (en) Alcohol-based synthetic fuel synthesizer
JPS594745Y2 (en) Spouted layer particle fall prevention device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant