CN210340778U - System for two cauldron pressurization production modified pitch of twin-furnace - Google Patents
System for two cauldron pressurization production modified pitch of twin-furnace Download PDFInfo
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- CN210340778U CN210340778U CN201921145343.1U CN201921145343U CN210340778U CN 210340778 U CN210340778 U CN 210340778U CN 201921145343 U CN201921145343 U CN 201921145343U CN 210340778 U CN210340778 U CN 210340778U
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- 238000004519 manufacturing process Methods 0.000 title abstract description 14
- 239000010426 asphalt Substances 0.000 claims abstract description 216
- 238000006243 chemical reaction Methods 0.000 claims abstract description 147
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007789 gas Substances 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract description 35
- 238000000034 method Methods 0.000 abstract description 21
- 238000005303 weighing Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 description 14
- 238000005259 measurement Methods 0.000 description 14
- 238000007667 floating Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011883 electrode binding agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010667 large scale reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to a system for producing modified asphalt by pressurizing double furnaces and double kettles, which comprises a 1# reaction kettle, a 1# tubular furnace, a 2# reaction kettle and a 2# tubular furnace; the top of the No. 1 reaction kettle is provided with a first nitrogen inlet and a first flash oil gas outlet, one side of the upper part of the reaction kettle is provided with a first asphalt feeding hole, the other side of the reaction kettle is provided with a first asphalt full flow port, the bottom of the reaction kettle is provided with a first circulating asphalt outlet, a first flexible baffle is arranged inside the reaction kettle, the top of the No. 2 reaction kettle is provided with a second nitrogen inlet and a second flash oil gas outlet, one side of the upper part of the reaction kettle is provided with a second asphalt feeding hole, the other side of; a second flexible baffle is arranged inside the box body. The utility model discloses in, reation kettle changes the side feeding, the full flow ejection of compact into by side feeding, bottom discharge mode, and the bottom discharge is beaten the circulation, need not liquid level control and just can realize safety in production, has saved the investment of level gauge or weighing module, has solved the difficult problem that the level gauge or weighing module examined and repaired the difficulty, has simplified the control method of flow, makes the long-time steady operation of system.
Description
Technical Field
The utility model relates to a metallurgical coking technical field especially relates to a system of two cauldron pressurized production upgrading pitch of twin-furnace.
Background
About 50% -60% of asphalt is generally generated in the coal tar processing process, which belongs to a bulk product of tar processing, and the larger the processing scale is, the more the asphalt yield is. The modified asphalt is the main downstream product of the existing asphalt and is mainly used for producing prebaked anodes, preparing battery rods or electrode binders in the electrolytic aluminum industry.
At present, the domestic technology for producing modified asphalt mostly adopts a thermal polycondensation method, and the thermal polycondensation method can be divided into a kettle type heating method and a tube furnace heating method according to the heating mode.
The production process of modified asphalt by tank-type heating method uses medium-temp asphalt as raw material, and uses a heating furnace to directly heat the external surface of reaction kettle, and the interior of reaction kettle can be controlled by means of controlling a certain reaction residence time and proper reaction temp. so as to attain the goal of modifying asphalt. Because the heating surface is the outer surface of the reaction kettle, in order to achieve good mass and heat transfer effects, a stirrer needs to be arranged in the reaction kettle, so that the volume of the reaction kettle is limited, and the design capability is limited.
A process for preparing modified asphalt by tubular furnace heating method includes such steps as pressurizing dual-furnace dual-kettle stripping flash evaporation process introduced from France, ordinary-pressure or reduced-pressure dual-furnace stripping flash evaporation process and single-furnace single-kettle stripping flash evaporation process, in which the intermediate-temp asphalt is used as raw material, asphalt is heated in tubular heating furnace, modifying reaction is performed in reactor, and the reaction is performed in two steps.
The production process of modified asphalt by a tubular furnace heating method has become the mainstream of the existing modified asphalt production process due to large design capability and flexible reaction control, but has a great problem which is difficult to solve, namely the problem of liquid level measurement of a modified asphalt reaction kettle.
The traditional reaction kettle liquid level remote transmission measurement method generally adopts a pressure difference measurement mode, liquid density calculation is converted into liquid level height, but due to the particularity of asphalt liquid, the temperature in a reaction kettle is higher than 380 ℃, the liquid contains solid suspended matters such as polymers and the like, the liquid has high viscosity and is easy to solidify, the asphalt smoke has high volatilization and is easy to condense, and the like, at an instrument liquid pressure measurement interface, asphalt is easy to solidify and block, so that a measurement instrument fails. If a buoy liquid level meter is adopted, the buoy and the guide cylinder or the guide steel wire are easily adhered together and are not easy to float up and down, so that the liquid level measurement cannot be realized. In addition, a floating ball liquid level meter is adopted in an attempt, but the liquid level of the reaction kettle is higher than 10m, and the traditional floating ball liquid level meter is provided with a liquid level indicator with the same height as the liquid level, so that the lifting rod of the floating ball liquid level meter is too long, the liquid level indicator is too high at the top of the reaction kettle and is difficult to realize, and the floating ball and the guide cylinder or the guide steel wire are easily adhered together and are difficult to float up and down. In addition, asphalt smoke is easy to enter the liquid level indicator along the lifting rod of the liquid level indicator to generate condensation, so that the liquid level indicator is blocked. If adopt radar level gauge, the short time measurement effect still can, but because the easy condensation that produces of pitch cigarette on radar level gauge, just can make radar electromagnetic wave receive failure soon, lead to overhauing frequently.
In the pressure double-furnace double-kettle stripping flash evaporation process introduced in France, the liquid level height control of a reaction kettle does not adopt a liquid level measurement method, but adopts a weighing module to convert the liquid level height, the liquid level height is controlled by controlling the whole weight of the reaction kettle, the number of measurement points of the weighing module is the key for measuring the weight accuracy or not, generally 2 measurement points are more accurate, the number of support lugs of a large-scale reaction kettle is generally 6 or 8, the measurement is inaccurate, the influence of wind load and weighing module errors is often caused, the weight measurement is unstable, the fluctuation is large, the liquid level calculated is unstable, the fluctuation of the outflow of modified asphalt is large, and the quality control of the modified asphalt is influenced. Meanwhile, the reaction kettle has huge appearance, so that the weighing module is very difficult to overhaul and replace, the overhaul time is long, and the normal production is seriously influenced.
In conclusion, in the conventional production process of modified asphalt by a tubular furnace heating method, the problem of liquid level measurement of a reaction kettle is not well solved, so that the automation control of the process is to be perfected, and the process and equipment are to be improved.
Disclosure of Invention
The utility model provides a system for two cauldron pressurized production upgrading pitch of twin-furnace, reation kettle is by the side feeding, the bottom discharge mode changes the side feeding, the full flow ejection of compact, the bottom discharge is beaten and is circulated to go the tubular furnace heating and get back to reation kettle as the heat source, need not liquid level control and just can realize safety in production, saved the investment of level gauge or weighing module, solved the difficult problem that the level gauge or weighing module overhauld the difficulty, simplified the control method of flow, make the system can long-time steady operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a system for producing modified asphalt by double-furnace double-kettle pressurization comprises a No. 1 reaction kettle, a No. 1 tubular furnace, a No. 2 reaction kettle and a No. 2 tubular furnace; the top of the No. 1 reaction kettle is provided with a first nitrogen inlet and a first flash evaporation oil gas outlet, one side of the upper part of the reaction kettle is provided with a first asphalt feeding hole, the other side of the upper part of the reaction kettle is provided with a first asphalt full flow port, and the bottom of the reaction kettle is provided with a first circulating asphalt outlet; a first flexible baffle plate with a snake-shaped cross section is arranged in the first reaction kettle 1 close to one side of the first asphalt full flow port, the first flexible baffle plate divides the first reaction kettle 1 into a main reaction area and a full flow area, a first asphalt feed port is positioned at one side of the main reaction area, a first asphalt full flow port is positioned at one side of the full flow area, and the main reaction area is communicated with the full flow area through a first asphalt flow channel below the first flexible baffle plate; the first circulating asphalt outlet is connected with a first asphalt feeding hole through a first asphalt circulating loop, a 1# asphalt circulating pump, a 1# tubular furnace and a raw asphalt inlet are sequentially arranged on the first asphalt circulating loop along the asphalt conveying direction, and the raw asphalt inlet is connected with an external raw asphalt conveying pipeline; a second nitrogen inlet and a second flash oil gas outlet are formed in the top of the 2# reaction kettle, a second asphalt feeding hole is formed in one side of the upper part of the 2# reaction kettle, a second asphalt full flow hole is formed in the other side of the upper part of the 2# reaction kettle, and a second circulating asphalt outlet is formed in the bottom of the 2# reaction kettle; a second flexible baffle plate with a snake-shaped cross section is arranged in the second 2# reaction kettle close to one side of the second asphalt full flow port, the second flexible baffle plate divides the second 2# reaction kettle into a main reaction area and a full flow area, a second asphalt feed port is positioned at one side of the main reaction area, the second asphalt full flow port is positioned at one side of the full flow area, and the main reaction area is communicated with the full flow area through a second asphalt flow channel below the second flexible baffle plate; the circulating asphalt outlet is connected with an asphalt feeding port II through a second asphalt circulating loop, and a No. 2 asphalt circulating pump, a jet mixer and a No. 2 tube furnace are sequentially arranged on the second asphalt circulating loop along the asphalt conveying direction; the first asphalt full flow port of the No. 1 reaction kettle is connected with a jet mixer through a first modified asphalt conveying pipeline; the second full asphalt flow port of the No. 2 reaction kettle is connected with a modified asphalt inlet of the normal pressure stripping tower through a secondary modified asphalt conveying pipeline; the first nitrogen inlet of the 1# reaction kettle and the second nitrogen inlet of the 2# reaction kettle are respectively connected with an external nitrogen conveying pipeline, and the first flash oil gas outlet of the 1# reaction kettle and the second flash oil gas outlet of the 2# reaction kettle are connected with an oil gas inlet of the normal pressure stripping tower through flash oil gas conveying pipelines.
A plurality of first asphalt full-flow openings are formed in the No. 1 reaction kettle along the height direction, each first asphalt full-flow opening is connected with a first modified asphalt conveying pipeline through a first asphalt full-flow pipe, and a first full-flow valve is arranged on each first asphalt full-flow pipe; and a plurality of second asphalt full-flow ports are arranged on the No. 2 reaction kettle in the height direction, each second asphalt full-flow port is respectively connected with a secondary modified asphalt conveying pipeline through a second asphalt full-flow pipe, and second full-flow valves are respectively arranged on the second asphalt full-flow pipes.
The top surface of the first flexible baffle is higher than the height of the uppermost asphalt full flow port I; the top surface of the second flexible baffle is higher than that of the second asphalt full flow port at the top.
The bottom of the No. 1 reaction kettle is in a cone shape, and a first circulating asphalt outlet is arranged at the center of the bottom of the cone shape; the bottom of the 2# reaction kettle is in a cone shape, and the second circulating asphalt outlet is arranged at the center of the bottom of the cone shape.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the modified asphalt reaction kettle of the existing double-furnace double-kettle pressurized modified asphalt production process adopts a mode of side feeding and bottom discharging, wherein one part of discharged material is heated by a tube furnace and returns to the reaction kettle as a heat source, and the liquid level or weight of the reaction kettle is kept constant by controlling the flow rate of the other part of discharged material, so that the reaction residence time of the modified asphalt is controlled; the liquid level measurement is difficult and the weight measurement is unstable, so that the whole process operation is unstable, and the product quality is influenced; in the utility model, the modified asphalt reaction kettle adopts the modes of lateral feeding, heating of bottom discharging, circulating and full-flow discharging, and is provided with a plurality of full-flow ports according to the preset retention time, and the reaction retention time of the modified asphalt is controlled by the full-flow height, so that the influence caused by the difficulty in liquid level measurement and the instability in weight measurement can be avoided, and the operation of the modified asphalt reaction kettle can be smooth and free from obstacle without liquid level display;
2) a flexible baffle is arranged near one side of the full asphalt flow port of the upgrading reaction kettle (because the flow of asphalt discharged from the bottom for circulating heating is about 8 times of the flow of asphalt discharged from the full flow, the volume of the main reaction zone is larger than that of the full flow zone), and the first-in first-out, the last-in last-out and the last-out of the asphalt in the upgrading reaction kettle are ensured;
3) the flexible baffle plate not only has the function of area separation, but also has the function of heat exchange, and can generate the stirring effect, so that the temperature of the materials in the whole reaction kettle is balanced, and the reaction efficiency is improved;
4) the system can realize safe production without liquid level control, saves the investment of the liquid level meter or the weighing module, solves the difficult problem of difficult maintenance of the liquid level meter or the weighing module, and simplifies the control method of the flow.
Drawings
FIG. 1 is a schematic structural diagram of a system for producing modified asphalt by double-furnace and double-kettle pressurization according to the present invention.
Fig. 2 is a view a-a/B-B in fig. 1.
In the figure: 1.1# reaction kettle 2, flexible baffle I3.1 # asphalt circulating pump 4.1# tube furnace 5, full flow valve I6.2 # reaction kettle 7, flexible baffle II 8.2# asphalt circulating pump 9.2# tube furnace 10, full flow valve II 11, jet mixer
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the system for producing modified asphalt by double-furnace double-kettle pressurization according to the present invention comprises a # 1 reaction kettle 1, a # 1 tubular furnace 4, a # 2 reaction kettle 6 and a # 2 tubular furnace 9; the top of the No. 1 reaction kettle 1 is provided with a first nitrogen inlet and a first flash evaporation oil gas outlet, one side of the upper part of the reaction kettle is provided with a first asphalt feeding hole, the other side of the upper part of the reaction kettle is provided with a first asphalt full flow port, and the bottom of the reaction kettle is provided with a first circulating asphalt outlet; a flexible baffle I2 (shown in figure 2) with a snake-shaped cross section is arranged in the No. 1 reaction kettle 1 close to one side of the asphalt full flow port, the flexible baffle I2 divides the No. 1 reaction kettle 1 into a main reaction area and a full flow area, an asphalt feed inlet I is positioned at one side of the main reaction area, the asphalt full flow port I is positioned at one side of the full flow area, and the main reaction area is communicated with the full flow area through an asphalt flow channel I below the flexible baffle I2; the first circulating asphalt outlet is connected with a first asphalt feeding hole through a first asphalt circulating loop, a 1# asphalt circulating pump 3, a 1# tubular furnace 4 and a raw asphalt inlet are sequentially arranged on the first asphalt circulating loop along the asphalt conveying direction, and the raw asphalt inlet is connected with an external raw asphalt conveying pipeline; a second nitrogen inlet and a second flash oil gas outlet are formed in the top of the 2# reaction kettle 6, a second asphalt feeding hole is formed in one side of the upper part of the 2# reaction kettle, a second asphalt full flow port is formed in the other side of the upper part of the 2# reaction kettle, and a second circulating asphalt outlet is formed in the bottom of the 2# reaction kettle; a second flexible baffle 7 (shown in figure 2) with a snake-shaped cross section is arranged in the second reaction kettle 2 close to one side of the second asphalt full flow port, the second flexible baffle 7 divides the second reaction kettle 6 into a main reaction area and a full flow area, a second asphalt feed port is arranged at one side of the main reaction area, the second asphalt full flow port is arranged at one side of the full flow area, and the main reaction area is communicated with the full flow area through a second asphalt flow channel below the second flexible baffle 7; the circulating asphalt outlet is connected with an asphalt feeding port II through a second asphalt circulating loop, and a No. 2 asphalt circulating pump 8, a jet mixer 11 and a No. 2 tube furnace 9 are sequentially arranged on the second asphalt circulating loop along the asphalt conveying direction; the first asphalt full flow port of the No. 1 reaction kettle 1 is connected with a jet mixer 11 through a primary modified asphalt conveying pipeline; the second asphalt full flow port of the No. 2 reaction kettle 6 is connected with a modified asphalt inlet of the normal pressure stripping tower through a secondary modified asphalt conveying pipeline; the first nitrogen inlet of the 1# reaction kettle 1 and the second nitrogen inlet of the 2# reaction kettle 6 are respectively connected with an external nitrogen conveying pipeline, and the first flash evaporation oil gas outlet of the 1# reaction kettle 1 and the second flash evaporation oil gas outlet of the 2# reaction kettle 6 are connected with an oil gas inlet of the normal pressure stripping tower through flash evaporation oil gas conveying pipelines.
The No. 1 reaction kettle 1 is provided with a plurality of first asphalt full flow ports along the height direction, each first asphalt full flow port is connected with a first modified asphalt conveying pipeline through a first asphalt full flow pipe, and a first full flow valve 5 is arranged on each first asphalt full flow pipe; and a plurality of second asphalt full-flow ports are arranged on the No. 2 reaction kettle 6 in the height direction, each second asphalt full-flow port is respectively connected with a secondary modified asphalt conveying pipeline through a second asphalt full-flow pipe, and second full-flow valves 10 are respectively arranged on the second asphalt full-flow pipes.
The top surface of the first flexible baffle 2 is higher than the height of the uppermost asphalt full flow port I; the top surface of the second flexible baffle 7 is higher than the height of the second asphalt full flow port at the top.
The bottom of the No. 1 reaction kettle 1 is in a cone shape, and a first circulating asphalt outlet is arranged at the center of the bottom of the cone shape; the bottom of the No. 2 reaction kettle 6 is in a cone shape, and the second circulating asphalt outlet is arranged at the center of the bottom of the cone shape.
The technical process for producing modified asphalt by double-furnace double-kettle pressurization comprises the following steps:
1) mixing raw material medium-temperature asphalt and No. 1 tubular furnace outlet asphalt, then feeding the mixture into a No. 1 reaction kettle 1 from an asphalt feeding hole I, introducing nitrogen into the No. 1 reaction kettle 1, controlling the temperature to be 360-400 ℃ and the pressure to be 250-350 kPa, wherein the mixed asphalt fed into the No. 1 reaction kettle 1 flows from top to bottom in a main reaction zone, bypasses a flexible baffle plate I2 through an asphalt flow channel at the bottom and then flows from bottom to top in a full flow zone, and in the process, the mixed asphalt generates a primary modification reaction mainly based on β -modification reaction, the primary modified asphalt flows out through an asphalt full flow hole I, and flash oil gas generated by the primary modification reaction is discharged into a normal-pressure stripping tower through a flash oil gas outlet at the top of the No. 1 reaction kettle 1;
2) pumping asphalt at the bottom of the No. 1 reaction kettle 1 by a No. 1 asphalt circulating pump 3, wherein the flow rate of the pumped asphalt is 7-9 times of that of full-flow discharged asphalt, conveying the pumped asphalt to a No. 1 tubular furnace 4 for heating, and then circulating the asphalt to an asphalt feeding port of the No. 1 reaction kettle 1 to heat medium-temperature asphalt in the raw materials;
3) the primary modified asphalt flowing out of the first asphalt full flow port of the No. 1 reaction kettle 1 automatically flows into a jet mixer 11, is mixed with the secondary modified asphalt pumped out of the bottom of the No. 2 reaction kettle 6 in the jet mixer 11, is sucked into a second asphalt circulation loop through vacuum generated by the jet mixer 11, enters the No. 2 reaction kettle 6 from an asphalt feeding port II after being heated by a No. 2 tube furnace 9, is introduced with nitrogen into the No. 2 reaction kettle 6, is controlled at 380-420 ℃, is controlled at 250-350 kPa, flows from top to bottom in a main reaction zone, bypasses a flexible baffle II 7 through an asphalt flow channel at the bottom, flows from bottom to top in a full flow zone, and in the process, the secondary modified reaction of α - β -modified asphalt occurs simultaneously, flash oil gas generated by the secondary modified reaction is discharged to a normal pressure stripping tower through a flash oil gas outlet II at the top of the No. 2 reaction kettle 6, and the asphalt after the secondary modified flows out of the second asphalt full flow port, is stripped to obtain the finished product of the self-flow modified asphalt.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. A system for producing modified asphalt by double-furnace double-kettle pressurization is characterized by comprising a No. 1 reaction kettle, a No. 1 tubular furnace, a No. 2 reaction kettle and a No. 2 tubular furnace; the top of the No. 1 reaction kettle is provided with a first nitrogen inlet and a first flash evaporation oil gas outlet, one side of the upper part of the reaction kettle is provided with a first asphalt feeding hole, the other side of the upper part of the reaction kettle is provided with a first asphalt full flow port, and the bottom of the reaction kettle is provided with a first circulating asphalt outlet; a first flexible baffle plate with a snake-shaped cross section is arranged in the first reaction kettle 1 close to one side of the first asphalt full flow port, the first flexible baffle plate divides the first reaction kettle 1 into a main reaction area and a full flow area, a first asphalt feed port is positioned at one side of the main reaction area, a first asphalt full flow port is positioned at one side of the full flow area, and the main reaction area is communicated with the full flow area through a first asphalt flow channel below the first flexible baffle plate; the first circulating asphalt outlet is connected with a first asphalt feeding hole through a first asphalt circulating loop, a 1# asphalt circulating pump, a 1# tubular furnace and a raw asphalt inlet are sequentially arranged on the first asphalt circulating loop along the asphalt conveying direction, and the raw asphalt inlet is connected with an external raw asphalt conveying pipeline; a second nitrogen inlet and a second flash oil gas outlet are formed in the top of the 2# reaction kettle, a second asphalt feeding hole is formed in one side of the upper part of the 2# reaction kettle, a second asphalt full flow hole is formed in the other side of the upper part of the 2# reaction kettle, and a second circulating asphalt outlet is formed in the bottom of the 2# reaction kettle; a second flexible baffle plate with a snake-shaped cross section is arranged in the second 2# reaction kettle close to one side of the second asphalt full flow port, the second flexible baffle plate divides the second 2# reaction kettle into a main reaction area and a full flow area, a second asphalt feed port is positioned at one side of the main reaction area, the second asphalt full flow port is positioned at one side of the full flow area, and the main reaction area is communicated with the full flow area through a second asphalt flow channel below the second flexible baffle plate; the circulating asphalt outlet is connected with an asphalt feeding port II through a second asphalt circulating loop, and a No. 2 asphalt circulating pump, a jet mixer and a No. 2 tube furnace are sequentially arranged on the second asphalt circulating loop along the asphalt conveying direction; the first asphalt full flow port of the No. 1 reaction kettle is connected with a jet mixer through a first modified asphalt conveying pipeline; the second full asphalt flow port of the No. 2 reaction kettle is connected with a modified asphalt inlet of the normal pressure stripping tower through a secondary modified asphalt conveying pipeline; the first nitrogen inlet of the 1# reaction kettle and the second nitrogen inlet of the 2# reaction kettle are respectively connected with an external nitrogen conveying pipeline, and the first flash oil gas outlet of the 1# reaction kettle and the second flash oil gas outlet of the 2# reaction kettle are connected with an oil gas inlet of the normal pressure stripping tower through flash oil gas conveying pipelines.
2. The system for producing the modified asphalt by the double-furnace double-kettle pressurization as claimed in claim 1, wherein the No. 1 reaction kettle is provided with a plurality of asphalt full flow ports I along the height direction, each asphalt full flow port I is respectively connected with a primary modified asphalt conveying pipeline through an asphalt full flow pipe I, and the asphalt full flow pipe I is respectively provided with a full flow valve I; and a plurality of second asphalt full-flow ports are arranged on the No. 2 reaction kettle in the height direction, each second asphalt full-flow port is respectively connected with a secondary modified asphalt conveying pipeline through a second asphalt full-flow pipe, and second full-flow valves are respectively arranged on the second asphalt full-flow pipes.
3. The system for producing upgraded asphalt by using double furnaces and double kettles with increased pressure as claimed in claim 1, wherein the height of the top surface of the first flexible baffle is higher than that of the first full asphalt flow port at the top; the top surface of the second flexible baffle is higher than that of the second asphalt full flow port at the top.
4. The system for producing the modified asphalt by the double-furnace double-kettle pressurization as claimed in claim 1, wherein the bottom of the No. 1 reaction kettle is in a cone cylinder shape, and a circulating asphalt outlet I is arranged at the center of the bottom of the cone cylinder shape; the bottom of the 2# reaction kettle is in a cone shape, and the second circulating asphalt outlet is arranged at the center of the bottom of the cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145343.1U CN210340778U (en) | 2019-07-19 | 2019-07-19 | System for two cauldron pressurization production modified pitch of twin-furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145343.1U CN210340778U (en) | 2019-07-19 | 2019-07-19 | System for two cauldron pressurization production modified pitch of twin-furnace |
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| CN210340778U true CN210340778U (en) | 2020-04-17 |
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|---|---|---|---|
| CN201921145343.1U Withdrawn - After Issue CN210340778U (en) | 2019-07-19 | 2019-07-19 | System for two cauldron pressurization production modified pitch of twin-furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240917A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle pressurization production modified coal tar pitches of twin furnace |
| CN114164013A (en) * | 2021-12-20 | 2022-03-11 | 祥峰科技有限公司 | Modified asphalt preparation system |
-
2019
- 2019-07-19 CN CN201921145343.1U patent/CN210340778U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240917A (en) * | 2019-07-19 | 2019-09-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of system and technique of the double kettle pressurization production modified coal tar pitches of twin furnace |
| CN110240917B (en) * | 2019-07-19 | 2024-04-26 | 中冶焦耐(大连)工程技术有限公司 | System and process for producing modified asphalt by double-furnace double-kettle pressurization |
| CN114164013A (en) * | 2021-12-20 | 2022-03-11 | 祥峰科技有限公司 | Modified asphalt preparation system |
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