Small test device for steam cracking hydrocarbon
By using motor-driven gears and turbine blades to disrupt the flow direction of raw materials in a small-scale steam cracking hydrocarbon test device, and combining this with preheating, filtration, and vibration reduction measures, the problem of long raw material mixing time was solved, achieving more efficient mixing and cracking results.
Patent Information
- Application Number
- CN202423001817.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In existing small-scale steam cracking hydrocarbon test equipment, the raw materials rotate in the same direction during stirring, resulting in long mixing time and poor mixing effect.
The first rotating shaft is connected to the stirring rod by a motor, which, together with the first gear, the second gear and the turbine blade, disrupts the flow direction of the raw materials. The raw materials are preheated by a fixed plate and an electric heating tube. The scraper and damping spring reduce vibration and residue. A filter box is installed in the feed pipe to filter impurities.
It improves the mixing effect of raw materials, reduces mixing time, increases pyrolysis rate, reduces the risk of equipment damage, and ensures operational safety and equipment stability.
Smart Images
Figure CN223458296U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of steam cracking, and particularly relates to a small test device for steam cracking hydrocarbon. BACKGROUND
[0002] Steam cracking hydrocarbon is a petroleum chemical process, which is mainly used for producing low molecular olefins such as ethylene and propylene, and light aromatic hydrocarbons such as benzene, toluene and xylene, etc. This technology can directly convert crude oil into chemicals such as ethylene and propylene.
[0003] In the process of steam cracking hydrocarbon, the hydrocarbon raw material is added into the cracking furnace, and then the raw material is heated, and then steam is injected into the cracking furnace to mix with the raw material, so that the hydrocarbon molecules are broken to form smaller hydrocarbon molecules, and then cooling and fractionation steps are performed to separate different products. In long-term use observation, it is found that steam cracking hydrocarbon usually uses a small test device for multiple tests, and the existing test device usually uses a stirring rod to stir and mix the raw material when adding the raw material. When stirring, the raw material rotates in the same direction, resulting in a long mixing time.
[0004] Therefore, the utility model provides a small test device for steam cracking hydrocarbon. UTILITY MODEL CONTENTS
[0005] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background art, a small test device for steam cracking hydrocarbon is provided.
[0006] The utility model solves the technical scheme that the utility model discloses a small test device for steam cracking hydrocarbon, including the bottom plate, the bottom plate top solid connection has the stirring tank, the stirring tank lateral wall solid connection has a plurality of support legs, the bottom plate top solid connection has the motor, the motor output solid connection has the first rotating shaft, the first rotating shaft lateral wall solid connection has a plurality of stirring rods, the first rotating shaft lateral wall solid connection has the first gear, the first gear is close to the stirring tank top setting, the stirring tank inboard wall top rotation is connected with the second rotating shaft, the second rotating shaft middle part solid connection has the second gear, the second gear and the first gear are intermeshed, the second rotating shaft bottom solid connection has the turbine vane, the bottom plate top solid connection has the oil pump, the oil pump and the stirring tank intercommunication, the bottom plate top solid connection has the cracking device, the oil pump and the cracking device are connected through the material guide pipe, the bottom plate top solid connection has the steam generator, the steam generator sets up away from the stirring tank one side, the steam generator and the cracking device are connected through the pipeline, through above-mentioned structure, sets up the motor and connects the first rotating shaft and the stirring rod, and cooperates the first gear and the second gear and the turbine vane, can make the flow direction of raw material be disturbed when stirring the raw material in the stirring tank, at this time, the mixing effect of the raw material can be improved, so as to reduce the condition that the raw material moves in the same direction, resulting in a long mixing time.
[0007] Preferably, the side wall of the stirring tank is fixed with a plurality of fixed plates; the middle of the fixed plate is fixed with a plurality of electric heating pipes; the electric heating pipe is annular structure; through the above structure, the fixed plate and the electric heating pipe are arranged, the petroleum raw materials in the stirring tank can be preheated, so as to reduce the heating time of the raw materials in the cracking device, and the cracking speed of the raw materials is improved.
[0008] Preferably, the bottom plate side wall is fixed with a protective cover; the protective cover is covered outside the electric heating pipe; the inner side wall of the protective cover is provided with a reflecting film; through the above structure, the protective cover and the reflecting film inside are arranged, on the one hand, the protection can reduce the scald, on the other hand, the diffused heat can be reflected to the surface of the stirring tank, so as to reduce the waste caused by heat loss.
[0009] Preferably, the first rotating shaft side wall is fixed with a pair of scrapers; a pair of the scrapers are symmetrically arranged; the scraper is in contact with the inner wall of the stirring tank; through the above structure, the scraper is arranged on the inner wall of the stirring tank, the raw materials adhered to the inner wall of the stirring tank can be scraped off, so as to reduce the raw materials remaining on the inner wall of the stirring tank, and the waste and the deterioration and pollution in the stirring tank are caused.
[0010] Preferably, the leg bottom is fixed with a damping spring; the bottom of the damping spring is fixed with a pad; the pad is fixed on the top of the bottom plate; through the above structure, the damping spring and the pad are arranged, the buffer and the vibration are reduced when the raw materials are stirred, so as to reduce the vibration, the connection is loose, and the falling and damage are caused.
[0011] Preferably, the guide pipe is communicated with a filter box in the middle; the filter box is fixed on the top of the bottom plate; the filter box is provided with a filter screen; through the above structure, the filter box is arranged, the raw materials entering the cracking device can be filtered, so as to reduce the sand and stone impurities mixed in the raw materials, and the damage caused by the blockage in the cracking device is caused.
[0012] The beneficial effects of the utility model are as follows:
[0013] 1. The utility model relates to a small test device for steam cracking hydrocarbon, by setting up motor connection first rotating shaft and stirring rod, cooperate first gear and second gear and turbine blade, can when stirring the raw materials in the stirring tank, make the flow direction of raw materials be disturbed, at this moment can improve the mixing effect of raw materials, to reduce the raw materials in the same direction movement, lead to the condition that mixed time is longer.
[0014] 2. The utility model relates to a small test device for steam cracking hydrocarbon, by setting up fixed plate and electric heating pipe, the petroleum raw materials in the stirring tank can be preheated, so as to reduce the heating time of the raw materials in the cracking device, and the cracking speed of the raw materials is improved. FIGURE DESCRIPTION
[0015] The utility model will be further described below with reference to the drawings.
[0016] Figure 1 It is the perspective view of the utility model;
[0017] Figure 2 It is the structure schematic view of the stirring tank in the utility model;
[0018] Figure 3 It is the sectional view of the utility model;
[0019] Figure 4 It is the structure schematic view of the first gear in the utility model.
[0020] Legend:
[0021] 1, bottom plate;11, stirring tank;12, supporting leg;13, motor;14, first rotating shaft;15, stirring rod;16, first gear;17, second rotating shaft;18, second gear;19, turbine blade;110, oil pump;111, cracking device;112, steam generator;113, material guide pipe;2, fixed plate;21, electric heating tube;3, protective cover;4, scraper;5, damping spring;51, backing plate;6, filter box;7, observation window. Specific implementation
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.
[0023] The specific embodiments are given below.
[0024] As Figures 1 to 4The utility model discloses a small -size test device for steam cracking hydrocarbon, including bottom plate 1, the top fixed junction of bottom plate 1 has the stirring tank 11, the lateral wall fixed junction of stirring tank 11 has a plurality of branch leg 12, the top fixed junction of bottom plate 1 has the motor 13, the output fixed junction of motor 13 has the first rotating shaft 14, the lateral wall fixed junction of first rotating shaft 14 has a plurality of stirring rod 15, the lateral wall fixed junction of first rotating shaft 14 has the first gear 16, the first gear 16 is close to stirring tank 11 top and sets up, the inside wall top rotation connection of stirring tank 11 has the second rotating shaft 17, the fixed junction of second rotating shaft 17 middle part has the second gear 18, the second gear 18 and first gear 16 are interlocked, the bottom fixed junction of second rotating shaft 17 has the turbine blade 19, the top fixed junction of bottom plate 1 has the oil pump 110, the oil pump 110 is connected with stirring tank 11, the top fixed junction of bottom plate 1 has the cracking device 111, the oil pump 110 is connected with cracking device 111 through guide material pipe 113, the top fixed junction of bottom plate 1 has the steam generator 112, the steam generator 112 sets up at far from stirring tank 11 one side, the steam generator 112 is connected with cracking device 111 through pipeline, when working, when carrying out steam cracking hydrocarbon test, the petroleum raw material is added in stirring tank 11, then starts motor 13 and drives first rotating shaft 14 and stirring rod 15 rotation, at this moment can the petroleum raw material in stirring tank 11 is stirred, makes the mixture in raw material fusion even, when first rotating shaft 14 rotates and drives first gear 16 to rotate, then first gear 16 drives second gear 18 to rotate and drives turbine blade 19 to rotate, at this moment turbine blade 19 is close to the position of stirring tank 11 edge, can make the raw material in stirring tank 11 produce vortex, at this moment can make raw material with stirring rod 15 rotation, through vortex and impact to break the flow direction of raw material, and the mixed raw material is sent into cracking device 111 through oil pump 110, at this moment can make steam generator 112 add water vapor to cracking device 111, then raw material carries out cracking in cracking device 111, through above -mentioned structure, sets up motor 13 and connects first rotating shaft 14 and stirring rod 15, and cooperate first gear 16 and second gear 18 and turbine blade 19, can when the raw material in stirring tank 11 is stirred, make the flow direction of raw material be broken, at this moment can improve the mixing effect of raw material, to reduce raw material and move in the same direction, lead to the situation of mixed time is longer.
[0025] As Figure 2As shown, the side wall of the stirring tank 11 is fixed with a plurality of fixed plates 2; the middle of the fixed plate 2 is fixed with a plurality of electric heating pipes 21; the electric heating pipe 21 is annular structure; when the raw materials are stirred in the stirring tank 11, the electric heating pipe 21 is powered to heat, at this time the heat is conducted from the outside to the inside of the stirring tank 11, which can heat the raw materials in the stirring tank 11, and then enter the cracking device 111 for cracking, at this time the temperature of the raw materials is high, which can reduce the heating time in the cracking device 111. Through the above structure, the fixed plate 2 and the electric heating pipe 21 are arranged, which can preheat the petroleum raw materials in the stirring tank 11, so as to reduce the heating time of the raw materials in the cracking device 111, and improve the cracking speed of the raw materials.
[0026] As shown in the figure, Figure 1 The side wall of the bottom plate 1 is fixed with a protective cover 3; the protective cover 3 covers the outside of the electric heating pipe 21; the inner side wall of the protective cover 3 is provided with a reflecting film; when the electric heating pipe 21 heats the raw materials in the stirring tank 11, the protective cover 3 located outside the electric heating pipe 21 can be protected to reduce the scalding of the operator, and the heat emitted by the electric heating pipe 21 will be dispersed to one side of the protective cover 3, at this time the reflecting film inside the protective cover 3 will reflect the heat to the surface of the stirring tank 11. Through the above structure, the protective cover 3 and the reflecting film inside are arranged, which can prevent scalding on one hand, and reflect the dispersed heat to the surface of the stirring tank 11 on the other hand, so as to reduce the waste caused by heat loss.
[0027] As shown in the figure, Figure 3 The side wall of the first rotating shaft 14 is fixed with a pair of scrapers 4; a pair of the scrapers 4 are symmetrically arranged; the scraper 4 is in contact with the inner wall of the stirring tank 11; when the first rotating shaft 14 rotates, it drives a pair of scrapers 4 to rotate, which is in contact with the inner wall of the stirring tank 11, and can scrape the inner wall of the stirring tank 11 during rotation. Through the above structure, the scraper 4 is arranged to scrape the inner wall of the stirring tank 11, which can scrape off the raw materials adhered to the inner wall of the stirring tank 11, so as to reduce the raw materials remaining in the inner wall of the stirring tank 11, which can cause waste and pollution in the stirring tank 11.
[0028] As shown in the figure, Figure 2 The bottom of the supporting leg 12 is fixed with a damping spring 5; the bottom of the damping spring 5 is fixed with a pad 51; the pad 51 is fixed on the top of the bottom plate 1; when the raw materials are stirred in the stirring tank 11, the raw materials will impact the stirring tank 11 when flowing, which will cause more vibration, at this time the damping spring 5 will continuously contract and rebound to reduce vibration. Through the above structure, the damping spring 5 and the pad 51 are arranged, which can buffer and reduce vibration when stirring the raw materials, so as to reduce the loosening of the overall connection caused by vibration, which can cause falling off and damage.
[0029] As shown in the figure, Figure 1As shown, the middle of the guide pipe 113 is communicated with a filter box 6; the filter box 6 is fixedly connected to the top of the bottom plate 1; the filter box 6 is internally provided with a filter screen; during operation, when the oil pump 110 sends the stirred raw material into the cracking device 111 through the guide pipe 113, the raw material will first enter the filter box 6, at this time, the filter screen installed in the filter box 6 will filter the raw material, and the impurities such as mud and stones in the raw material will be filtered out, through the above structure, the filter box 6 is arranged to filter the raw material entering the cracking device 111, so as to reduce the mud and stone impurities mixed in the raw material, and the entering of the cracking device 111 will not cause the blockage and damage.
[0030] As shown in the figure, Figure 1 the side wall of the cracking device 111 is provided with an observation window 7; during operation, when the raw material is cracked in the cracking device 111, the test situation inside the cracking device 111 can be observed through the observation window 7, through the above structure, the observation window 7 is arranged to facilitate the observation of the test situation inside the cracking device 111, so as to make appropriate operation and improve the convenience during the test.
[0031] Working principle: when carrying out steam cracking hydrocarbon test, the petroleum raw material is added into the stirring tank 11, and then the motor 13 is started to drive the first rotating shaft 14 and the stirring rod 15 to rotate, at this time, the petroleum raw material in the stirring tank 11 can be stirred, so that the mixture in the raw material is uniformly mixed, when the first rotating shaft 14 rotates, the first gear 16 is driven to rotate, and then the second gear 18 is driven to rotate by the first gear 16, so that the turbine blade 19 rotates, at this time, the turbine blade 19 is close to the edge of the stirring tank 11, so that the raw material in the stirring tank 11 generates vortex, at this time, the raw material is rotated with the stirring rod 15, and is impacted by the vortex to change the flow direction of the raw material, the mixed raw material is sent into the cracking device 111 through the oil pump 110, at this time, the steam generator 112 adds water vapor into the cracking device 111, and then the raw material is cracked in the cracking device 111, when the raw material is stirred in the stirring tank 11, the electric heating pipe 21 is electrified to generate heat, at this time, the heat is conducted from the outside of the stirring tank 11 to the inside, so that the raw material in the stirring tank 11 is heated, and then enters the cracking device 111 to crack, at this time, the temperature of the raw material is increased, so that the heating time in the cracking device 111 is reduced, when the electric heating pipe 21 generates heat to heat the raw material in the stirring tank 11, the protective cover 3 located outside the electric heating pipe 21 can be protected to reduce the scalding of the operator, the heat generated by the electric heating pipe 21 is dissipated to one side of the protective cover 3, at this time, the reflective film in the protective cover 3 reflects the heat to the surface of the stirring tank 11, when the first rotating shaft 14 rotates, a pair of scrapers 4 are driven to rotate, at this time, the scraper 4 contacts the inner wall of the stirring tank 11, and can scrape the inner wall of the stirring tank 11 when rotating, when the raw material is stirred in the stirring tank 11, the raw material flows and collides with the stirring tank 11 to generate vibration, at this time, the damping spring 5 is constantly contracted and rebounded to reduce vibration, when the oil pump 110 sends the stirred raw material into the cracking device 111 through the guide pipe 113, the raw material enters the filter box 6 first, at this time, the filter screen installed in the filter box 6 filters the raw material to filter out the impurities such as sand and stone in the raw material, when the raw material is cracked in the cracking device 111, the test situation in the cracking device 111 can be observed through the observation window 7.
[0032] The basic principle, main features and advantages of the utility model are shown and described. The skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the specification only illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A small-scale test apparatus for steam cracking hydrocarbons, comprising a base plate (1); characterized in that: The bottom plate (1) top is fixedly connected with a stirring tank (11); the stirring tank (11) side wall is fixedly connected with a plurality of supporting legs (12); the bottom plate (1) top is fixedly connected with a motor (13); the motor (13) output end is fixedly connected with a first rotating shaft (14); the first rotating shaft (14) side wall is fixedly connected with a plurality of stirring rods (15); the first rotating shaft (14) side wall is fixedly connected with a first gear (16); the first gear (16) is close to the stirring tank (11) top and is arranged; the stirring tank (11) inner side wall top is rotatably connected with a second rotating shaft (17); the second rotating shaft (17) middle part is fixedly connected with a second gear (18); the second gear (18) and the first gear (16) are mutually engaged; the second rotating shaft (17) bottom is fixedly connected with a turbine blade (19); the bottom plate (1) top is fixedly connected with an oil pump (110); the oil pump (110) communicates with the stirring tank (11); the bottom plate (1) top is fixedly connected with a cracking device (111); the oil pump (110) and the cracking device (111) are connected through a material guide pipe (113); the bottom plate (1) top is fixedly connected with a steam generator (112); the steam generator (112) is arranged on the side away from the stirring tank (11); the steam generator (112) and the cracking device (111) are connected through a pipeline.
2. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The stirring tank (11) side wall is fixedly connected with a plurality of fixed plates (2); the fixed plate (2) middle part is fixedly connected with a plurality of electric heating pipes (21); the electric heating pipe (21) is annular structure.
3. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The bottom plate (1) side wall is fixedly connected with a protective cover (3); the protective cover (3) is wrapped outside the electric heating pipe (21); the inner side wall of the protective cover (3) is provided with a reflecting film.
4. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The first rotating shaft (14) side wall is fixedly connected with a pair of scrapers (4); a pair of the scrapers (4) are symmetrically arranged; the scraper (4) is in contact with the inner wall of the stirring tank (11).
5. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The supporting leg (12) bottom is fixedly connected with a damping spring (5); the damping spring (5) bottom is fixedly connected with a backing plate (51); the backing plate (51) is fixedly connected on the bottom plate (1) top.
6. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The material guide pipe (113) middle part is communicated with a filter box (6); the filter box (6) is fixedly connected on the bottom plate (1) top; the filter box (6) is provided with a filter screen.
7. A small scale test apparatus for steam cracking hydrocarbons as claimed in claim 1, wherein: The cracking device (111) side wall is provided with an observation window (7).