CN218723406U - Vaporization slag cooling system - Google Patents
Vaporization slag cooling system Download PDFInfo
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- CN218723406U CN218723406U CN202222248730.6U CN202222248730U CN218723406U CN 218723406 U CN218723406 U CN 218723406U CN 202222248730 U CN202222248730 U CN 202222248730U CN 218723406 U CN218723406 U CN 218723406U
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- 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
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Abstract
The utility model provides a vaporization slag cooling system belongs to vaporization slag cooling and waste heat recovery field. The system comprises a storage bin, a roller slag cooler, a bag-type dust remover, an induced draft fan, a water inlet pipe, a water outlet pipe and a hot water recovery pipe; the feed bin is venturi structure, and feed bin upper portion outer wall is equipped with the water-cooling and presss from both sides the cover, and feed bin upper portion inner wall evenly is equipped with a plurality of vertical heat exchange tubes, and vertical heat exchange tube upper end and lower extreme press from both sides the cover intercommunication with the water-cooling respectively, and the choke department of feed bin is equipped with plunger type automatic control high temperature valve. The utility model carries out heat recovery while indirectly cooling the high-temperature vaporization slag, and the whole process is energy-saving and environment-friendly; the plunger type automatic control high temperature valve is arranged at the position of the Venturi throat of the storage bin, so that the operation process of intermittent discharging of the gasification furnace slag to continuous and stable feeding can be realized; the feed bin is provided with a water cooling jacket and a vertical heat exchange tube to carry out primary water cooling on the high-temperature vaporized slag, and then secondary water cooling is carried out through the roller slag cooler, so that the heat exchange times and the heat exchange area are increased, and the slag discharging temperature is low under the same condition.
Description
Technical Field
The utility model belongs to the technical field of vaporization slag cooling and waste heat recovery, in particular to vaporization slag cooling system.
Background
The gasification slag is a solid waste formed by water quenching of a molten liquid phase formed by ash and additives in coal under a high-temperature condition and residual carbon. The temperature of the vaporized slag is reduced from 450 ℃ to 50 ℃, the waste heat 950kW (sensible heat) can be discharged, and the waste heat recovery benefit is very considerable. The high-temperature furnace slag is generally cooled by mainly adopting a water-cooled roller slag cooler.
The working principle of the roller slag cooler is that hot slag falls into a roller body from a slag inlet pipe, is pushed forward by a spiral slag guide sheet welded on the wall of the roller body and drives slag to perform throwing motion, and then falls into a slag outlet tank to be discharged out of the roller body after exchanging heat with cooling water flowing in the reverse direction in the wall of the roller body.
Although the effect of directly cooling the high-temperature gasification furnace slag by adopting the water-cooled roller slag cooler is obvious, the slag discharging temperature is still higher, in order to meet the cooling requirement of slag discharging, a method for increasing the heat transfer area is generally adopted, and because of a series of technical limitations, the conventional method is to increase the length of the roller slag cooler at present, so that the normal operation and maintenance of a boiler are hindered, a part of fire fighting channel is occupied, the potential safety hazard is huge, and the material consumption is increased at the same time.
Disclosure of Invention
The utility model provides a vaporization slag cooling system, what solve is because the single cooling mode that current high temperature gasification slag cooling mainly adopted water-cooled cylinder cold slag ware to cool down and exist slag temperature on the high side, the waste heat recovery rate remain the improvement technical problem, solved simultaneously the aforesaid because of needs increase cylinder cold slag ware length can cause the material consumption to increase, hinder boiler normal operating and maintenance scheduling problem in order to improve vaporization slag cooling degree.
In order to achieve the above object, the present invention adopts a technical solution that is a vaporization slag cooling system, including:
the storage bin is used for receiving and cooling the high-temperature gasification furnace slag by counter-flow water cooling, the storage bin is of a Venturi structure, a feed inlet is formed in the top of the storage bin, a discharge outlet in the bottom of the storage bin is connected with a material guide inclined pipe, and a water-cooling jacket for heat exchange is arranged on the outer wall of the upper part of the storage bin;
the roller slag cooler is used for conveying and cooling high-temperature gasification furnace slag in a counter-flow manner, the feeding end of the roller slag cooler is connected with the discharging end of the material guide inclined pipe through a first rotary joint, the discharging end of the roller slag cooler is provided with a slag discharging box, the top of the slag discharging box is provided with a gas outlet, the bottom of the slag discharging box is provided with a discharging port, the right side of the slag discharging box is connected with a second rotary joint, the second rotary joint is provided with a water inlet and a water outlet, the roller slag cooler is provided with a water cooling channel, the water cooling channel comprises a water inlet cooling channel for inputting low-temperature cooling water and a water return cooling channel for outputting return water, and the water inlet, the water inlet cooling channel, the water return cooling channel and the water outlet are sequentially communicated to form a closed water flow cavity;
the bag-type dust remover is used for purifying and removing dust of tail gas discharged by the roller slag cooler, a tail gas inlet arranged at the bottom of the bag-type dust remover is connected with a gas outlet at the top of the slag discharging box, and the bag-type dust remover is positioned right above the slag discharging box;
the induced draft fan is used for exhausting the tail gas purified by the bag-type dust remover after being led out, and is connected with a tail gas outlet arranged at the top of the bag-type dust remover through an exhaust pipe;
the water inlet pipe is used for sending cooling water of an external cooling water source into the roller slag cooler and is connected with a water inlet in the second rotary joint;
the water outlet pipe is used for sending hot water flowing out of the roller slag cooler into the water cooling jacket, one end of the water outlet pipe is connected with a water outlet on the second rotary joint, and the other end of the water outlet pipe is connected with a water inlet arranged at the lower part of the water cooling jacket;
and the hot water recovery pipe is used for recovering high-temperature water flowing out of the water-cooling jacket to external waste heat utilization equipment, and a water outlet arranged at the upper part of the water-cooling jacket is connected with the hot water recovery pipe through a water discharge pipe.
Furthermore, a plurality of vertical heat exchange tubes are uniformly arranged on the inner wall of the upper part of the storage bin, and the upper ends and the lower ends of the vertical heat exchange tubes are respectively communicated with the water-cooling jacket.
Furthermore, a plunger type self-control high-temperature valve is arranged at a throat of the storage bin.
Furthermore, be equipped with first valve on the inlet tube, be equipped with the second valve on the outlet pipe.
Furthermore, a water outlet branch pipe is connected to a pipe section, located between the second valve and the water outlet, of the water outlet pipe, the other end of the water outlet branch pipe is communicated with the hot water recovery pipe, and a third valve is arranged on the water outlet branch pipe.
Furthermore, a fourth valve is arranged on the drain pipe.
Furthermore, the vaporized slag cooling system also comprises an air cooling pipe which is used for sending low-temperature air into the roller slag cooler to cool the high-temperature vaporized slag, the air cooling pipe is connected with an air inlet arranged in the middle of the material guide inclined pipe, and a fifth valve is arranged on the air cooling pipe.
Furthermore, a sixth valve is arranged on the exhaust pipe.
Furthermore, vaporization slag cooling system still including being used for sending into the compressed air conveyer pipe of low temperature compressed air to the cooling of tail gas purification to sack cleaner inner upper portion, compressed air conveyer pipe and sack cleaner upper portion lateral wall are equipped with cold wind entry linkage, are equipped with the seventh valve on the compressed air conveyer pipe.
Furthermore, the roller slag cooler is a jacket type slag cooler, a multi-pipe water-cooling roller slag cooler or a film type roller slag cooler.
Compared with the prior art, the utility model has the advantages that: the vaporization slag cooling system of the utility model indirectly cools the high-temperature vaporization slag and simultaneously recovers heat, and the whole process is energy-saving and environment-friendly; the plunger type automatic control high temperature valve is arranged at the venturi throat position of the storage bin, so that the operation process of intermittent discharging of the gasification furnace slag to continuous stable feeding can be realized, and the gasification furnace slag to be cooled is continuously discharged at a low speed through the throat of the storage bin; the storage bin is provided with a water cooling jacket and a vertical heat exchange tube to carry out primary water cooling on the high-temperature vaporized slag, and then secondary water cooling is carried out through the roller slag cooler, so that the heat exchange times and the heat exchange area are increased, and the slag discharging temperature is low under the same condition; the roller slag cooler is used for water cooling, and meanwhile, an air cooling pipe is used for sending low-temperature air for air cooling; carrying out air cooling on the tail gas purified by the bag-type dust remover by adopting low-temperature compressed air so as to ensure the outlet temperature of the bag-type dust remover; the cooling water cools the vaporization slag in the roller slag cooler and the storage bin in sequence, and then heat recovery and cyclic utilization are carried out.
Drawings
Fig. 1 is a schematic view of a vaporized slag cooling system according to the present invention;
FIG. 2 is a water pipeline connection diagram of the feed end of the roller slag cooler of the present invention;
FIG. 3 is a cross-sectional view of the roller slag cooler of the present invention;
FIG. 4 is a schematic view of the internal structure of the roller slag cooler of the present invention;
reference numerals: 1-a storage bin, 101-a plunger type self-control high-temperature valve, 102-a water-cooling jacket, 103-a vertical heat exchange tube, 2-a material guide inclined tube, 201-an air inlet, 3-a roller slag cooler, 301-a roller, 302-a fin tube, 303-a rolling ring, 304-a riding wheel, 305-a support, 306-an outer gear ring, 307-a gear, 308-a reduction box, 309-a hydraulic coupler, 310-a driving motor, 311-a water distribution chamber, 312-a slag discharging box, 313-a water collecting ring tube, 314-a water returning guide tube, 315-a central water returning tube, 316-a central cooling tube, 317-an end plate, 318-a water inlet guide tube, 319-a shoveling plate, 320-a spiral guide piece, 4-a bag dust remover, 5-an induced draft fan, 6-a water inlet tube, 601-a first valve, 7-a first rotary joint, 8-a water outlet tube, 801-a second valve, 802-a water outlet branch tube, 803-a third valve, 9-a water outlet tube, 901-a fourth valve, 10-a hot water recovery tube, 11-an air cooling tube, 11-a fifth valve, a sixth valve, 1101-an air delivery tube, a seventh air delivery tube, and a seventh air delivery tube, 1401-a seventh rotary joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by preferred embodiments.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of describing the present patent and for simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present patent. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. It should be noted that unless otherwise expressly stated or limited, the terms "mounted," "connected," and "disposed" are intended to be broadly construed, and include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, mechanically connected, and electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example 1
Referring to fig. 1, a cooling system for vaporized slag according to the present embodiment includes:
a storage bin 1 for receiving and counter-flow water cooling high-temperature gasification furnace slag, wherein the storage bin 1 is of a Venturi structure, the top of the storage bin is provided with a feed inlet, a discharge hole at the bottom of the storage bin 1 is connected with a material guide inclined pipe 2, and the outer wall of the upper part of the storage bin 1 is provided with a water-cooling jacket 102 for heat exchange;
the roller slag cooler 3 is used for conveying and cooling high-temperature gasified slag in a counter-flow manner, the feeding end of the roller slag cooler 3 is connected with the discharging end of the material guiding inclined pipe 2 through a first rotary joint 7, the discharging end of the roller slag cooler 3 is provided with a slag discharging box 312, the top of the slag discharging box 312 is provided with an air outlet, the bottom of the slag discharging box 312 is provided with a material outlet, the right side of the slag discharging box 312 is connected with a second rotary joint 14, the second rotary joint 14 is provided with a water inlet 1401 and a water outlet 1402, the roller slag cooler 3 is provided with a water cooling channel, the water cooling channel comprises a water inlet cooling channel for inputting low-temperature cooling water and a return water cooling channel for outputting return water, and the water inlet 1401, the water inlet cooling channel, the return water cooling channel and the water outlet 1402 are sequentially communicated to form a closed water flowing cavity;
the bag-type dust collector 4 is used for purifying and dedusting tail gas discharged by the roller slag cooler 3, a tail gas inlet arranged at the bottom of the bag-type dust collector 4 is connected with a gas outlet at the top of the slag discharging box 312, and the bag-type dust collector 4 is positioned right above the slag discharging box 312;
the induced draft fan 5 is used for exhausting the tail gas purified by the bag-type dust remover 4 after being led out, and the induced draft fan 5 is connected with a tail gas outlet arranged at the top of the bag-type dust remover 4 through an exhaust pipe 12;
the water inlet pipe 6 is used for sending cooling water of an external cooling water source into the roller slag cooler 3, and the water inlet pipe 6 is connected with a water inlet 1401 on the second rotary joint 14;
the water outlet pipe 8 is used for sending hot water flowing out of the roller slag cooler 3 into the water-cooling jacket 102, one end of the water outlet pipe 8 is connected with a water outlet 1402 on the second rotary joint 14, and the other end of the water outlet pipe is connected with a water inlet arranged at the lower part of the water-cooling jacket 102;
and the hot water recovery pipe 10 is used for recovering the high-temperature water flowing out of the water-cooling jacket 102 and sending the high-temperature water to external waste heat utilization equipment, and a water outlet arranged at the upper part of the water-cooling jacket 102 is connected with the hot water recovery pipe 10 through a water discharge pipe 9.
In practical application, 12 ton/t vaporization slag is reduced to 50 ℃ from 450 ℃, can emit waste heat 950kW (sensible heat), and the heat is recovered when the vaporization slag is indirectly cooled by high-temperature water of 80 ℃, wherein the high-temperature water of 80 ℃ comes from the original power generation device, and the heat exchange still returns to the power generation device to 115-125 ℃, namely the original power generation device and the utility model discloses a realize heat recovery between the vaporization slag cooling system and hot water cyclic utilization.
Specifically, a plunger type self-control high-temperature valve 101 is arranged at the throat of the storage bin 1. Present gasifier slag intermittent type is unloaded, 2 times of unloading in 1 hour, and the volume of unloading at every turn is 6 tons, for guaranteeing the utility model discloses a continuous stable operation of gasifier slag cooling system sets up the feed bin 1 of venturi structure, sets up plunger type automatic control high temperature valve 101 in the venturi choke position of feed bin 1, realizes that the intermittent type of gasifier slag is unloaded to the operation process of continuous stable feeding, needs the continuous slow blowing of refrigerated gasifier slag through the choke of feed bin 1.
Specifically, the inner wall of the upper part of the storage bin 1 is uniformly provided with a plurality of vertical heat exchange tubes 103, and the upper ends and the lower ends of the vertical heat exchange tubes 103 are respectively communicated with the water-cooling jacket 102. The gasification slag in the silo 1 is cooled by a water-cooling jacket 102 and a vertical heat exchange pipe 103. Compare the single mode that utilizes cold sediment ware 3 direct cooling gasification furnace cinder of cylinder, the utility model discloses still utilize feed bin 1 to cool off gasification furnace cinder, increased total heat transfer area and heat transfer number of times, final gasification furnace cinder temperature of slagging tap is low.
Specifically, a first valve 601 is arranged on the water inlet pipe 6, a second valve 801 is arranged on the water outlet pipe 8, and a fourth valve 901 is arranged on the water outlet pipe 9. In application, according to practical situations, the first valve 601, the second valve 801 and the fourth valve 901 adopt electric regulating valves or pneumatic regulating valves.
Specifically, a water outlet branch pipe 802 is connected to a pipe section of the water outlet pipe 8 between the second valve 801 and the water outlet 1402, the other end of the water outlet branch pipe 802 is communicated with the hot water recovery pipe 10, and a third valve 803 is arranged on the water outlet branch pipe 802; part or all of the hot water flowing out of the roller slag cooler 3 can be directly sent to the hot water recovery pipe 10 without passing through the bin 1.
Specifically, the roller slag cooler 3 is a jacketed slag cooler or a multi-tube water-cooled roller slag cooler 3.
Example 2
On the basis of the embodiment 1, the vaporized slag cooling system further comprises an air cooling pipe 11 for feeding low-temperature air into the roller slag cooler to cool the high-temperature vaporized slag, the air cooling pipe 11 is connected with an air inlet 201 arranged in the middle of the material guiding inclined pipe 2, and a fifth valve 1101 is arranged on the air cooling pipe 11. The air cooling pipe 11 is connected with an external fan, and air is fed into the slag cooler of the roller 301 through the air inlet 201 to cool the gasification furnace slag.
Specifically, the exhaust pipe 12 is provided with a sixth valve 1201, and in application, the third valve 803, the fifth valve 1101 and the sixth valve 1201 adopt electric control valves or pneumatic control valves according to actual conditions.
Example 3
On the basis of embodiment 2, the vaporized slag cooling system further comprises a compressed air conveying pipe 13 for feeding low-temperature compressed air into the upper part of the bag-type dust collector 4 to cool the purified tail gas, the compressed air conveying pipe 13 is connected with a cold air inlet arranged on the side wall of the upper part of the bag-type dust collector 4, and a seventh valve 1301 is arranged on the compressed air conveying pipe 13. The compressed air delivery pipe 13 is connected with an external air compressor, and compressed air of 25 ℃ is sent into the bag-type dust collector 4 to cool the purified tail gas in the bag-type dust collector 4.
Example 4
Unlike embodiment 1, the roller slag cooler 3 of the present embodiment employs a film-type roller slag cooler. Referring to fig. 1-4, the roller slag cooler 3 of the present embodiment includes a roller 301, a water distribution chamber 311, and a slag discharging tank 312, the roller 301 is a circular cylinder welded by a fin tube 302, two rolling rings 303 are fixedly sleeved on an outer wall of the roller 301, idler wheels 304 in rolling contact with the rolling rings 303 are symmetrically disposed on front and back sides of the rolling rings 303, the idler wheels 304 are mounted on a bracket 305, an outer gear ring 306 is fixedly sleeved on an outer wall of the roller 301 between the two rolling rings 303, a gear 307 engaged with the outer gear ring 306 is disposed on a front side of the outer gear ring 306, the gear 307 is fixed on an output shaft of a reduction gearbox 308, the reduction gearbox 308 is connected to a driving motor 310 through a fluid coupling 309, the right end of the fin tube 302 is connected to the water distribution chamber 311, the water distribution chamber 311 is a conical ring structure, the right side of the water distribution chamber 311 is rotatably connected to the slag discharging tank 312, the right side of the slag box 312 is connected with the second rotary joint 14, the left end of the finned tube 302 is connected with a water collecting ring pipe 313, a central cooling tube 316 is arranged on the central axis of the roller 301, the central cooling tube 316 is communicated with a water inlet 1401 of the second rotary joint 14, the central cooling tube 316 is communicated with the distribution chamber through at least one water inlet pipe 318, a central water return pipe 315 is arranged in the central cooling tube 316, the right end of the central water return pipe 315 is communicated with a water outlet 1402 of the second rotary joint 14, the left end of the central water return pipe 315 penetrates through a left end face seal cover of the central cooling tube 316, the water collecting ring pipe 313 is communicated with the left end of the central water return pipe 315 through at least one water return pipe 314, an annular end plate 317 is arranged on the inner side of the water collecting ring pipe 313, and the end plate 317 is connected with the discharge end of the material guide inclined pipe 2 through a first rotary joint 7.
In order to increase the heat exchange efficiency of the material, the inner sides of the fin tubes 302 are welded with shovelling plates 319 with different numbers, and in order to facilitate the material at the discharge end of the roller 301 to be conveyed to the slag discharging box 312, the inner wall of the discharge end of the roller 301 is provided with a spiral guide piece 320. The utility model discloses well rotation joint seal department all adopts the packing structure form.
The utility model discloses a vaporization slag cooling system's theory of operation: by regulating and controlling the plunger type automatic control high temperature valve 101, the vaporized slag in the storage bin 1 is continuously discharged at a low speed and is continuously and uniformly added into the feeding end of the slag cooler 3 of the roller 301 by the dead weight through the material guide inclined tube 2; meanwhile, circulating hot water of 0.3MPa and 80 ℃ enters the fin tube 302 of the roller 301 slag cooler 3 through the second rotary joint 14 and the water distribution chamber 311, the materials are cooled indirectly through the wall surface, the gasification furnace slag of 450 ℃ in the roller 301 is cooled along with the rotation of the roller 301 slag cooler 3, the retention time is 30-50min, and the gasification furnace slag is conveyed to the next unit in the slag discharge box 312 after being cooled to 100 ℃. And the high-temperature water with the temperature of 80 ℃ exchanges heat with the gasification furnace slag in the roller 301 slag cooler 3, then the circulating hot water with the temperature of 120 ℃ and the pressure of 0.3MPa flows out of the water distribution chamber 311 and the second rotary joint 14, enters the cooling jacket of the storage bin 1, further exchanges heat with the high-temperature gasification furnace slag in the storage bin 1 indirectly, and is conveyed out of a boundary area, and the heat is recovered and recycled. The tail gas with the temperature of 80-100 ℃ from the slag discharging box 312 enters a bag-type dust remover 4 for dust removal treatment, the materials after dust removal automatically flow back into the slag discharging box 312 by means of self weight and enter the next unit along with the cooled materials; the purified tail gas is pressurized by the draught fan 5 and then is exhausted.
As the improvement, in the practical application, in order to improve the utility model discloses a vaporization slag cooling system's degree of automation can be for the utility model discloses a vaporization slag cooling system designs electrical control circuit autonomous system and brings PLC control into, and the operation of all motors is all unified to be gone on PLC control system operation station, and the control column is established on the scene simultaneously, also can start/stop the motor at the scene control column. The UPS power supply is 220V +/-5% single-phase alternating current of 50Hz +/-1%, 1 PLC control cabinet is adopted, SIMATIC S7-1500 modules of SIEMENS are adopted, 1 motor control cabinet and 1 frequency conversion control cabinet are adopted, the voltage level of electric equipment is 380VAC/50Hz, the explosion-proof level dIICT4, the protection level IP55, 1 power distribution cabinet, the total installed capacity is 60kW, the voltage level of the electric equipment is 380VAC/50Hz and 220VDC/50Hz, the explosion-proof level dIICT4 and the protection level IP55. The power supply of the film type roller slag cooler is 380VAC/50Hz, and the power of the motor is 37kW; the variable frequency control is carried out by the motor control cabinet and the variable frequency control cabinet, a control loop can receive a remote start-stop command, and an operation column is arranged on site; and the motor control mode (local/remote), the running state and the fault state are sent to the PLC control system for interlocking, monitoring and displaying. The power supply of the induced draft fan 5 is 380VAC/50Hz, the rated power is 15kW, the frequency conversion control is carried out, the control is carried out by a motor control cabinet, a control loop can receive a remote start-stop command, and an operation column is arranged on site; and the motor control mode (local/remote), the running state and the fault state are sent to the PLC control system for interlocking, monitoring and displaying. The bag-type dust collector 4 adopts a pulse bag-type dust collector 4, the power of a pulse controller is 0.05kW, and a motor control cabinet provides a control power supply; and the control mode (local/remote), the running state and the fault state are sent to the PLC control system for interlocking, monitoring and displaying.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The embodiments of the present invention are not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A vaporized slag cooling system, comprising:
the storage bin is used for receiving and cooling the high-temperature gasification furnace slag by counter-flow water cooling, the storage bin is of a Venturi structure, a feed inlet is formed in the top of the storage bin, a discharge outlet in the bottom of the storage bin is connected with a material guide inclined pipe, and a water-cooling jacket for heat exchange is arranged on the outer wall of the upper part of the storage bin;
the roller slag cooler is used for conveying and cooling high-temperature gasification furnace slag in a counter-flow manner, the feeding end of the roller slag cooler is connected with the discharging end of the guide inclined tube through a first rotary joint, the discharging end of the roller slag cooler is provided with a slag discharging box, the top of the slag discharging box is provided with a gas outlet, the bottom of the slag discharging box is provided with a discharging hole, the right side of the slag discharging box is connected with a second rotary joint, the second rotary joint is provided with a water inlet and a water outlet, the roller slag cooler is provided with a water cooling channel, the water cooling channel comprises a water inlet cooling channel for inputting low-temperature cooling water and a water return cooling channel for outputting return water, and the water inlet, the water inlet cooling channel, the water return cooling channel and the water outlet are sequentially communicated to form a closed water flowing cavity;
the bag-type dust remover is used for purifying and removing dust of tail gas discharged by the roller slag cooler, a tail gas inlet arranged at the bottom of the bag-type dust remover is connected with a gas outlet at the top of the slag discharging box, and the bag-type dust remover is positioned right above the slag discharging box;
the induced draft fan is used for exhausting the tail gas purified by the bag-type dust remover after being led out, and is connected with a tail gas outlet arranged at the top of the bag-type dust remover through an exhaust pipe;
the water inlet pipe is used for sending cooling water of an external cooling water source into the roller slag cooler and is connected with a water inlet on the second rotary joint;
the water outlet pipe is used for sending hot water flowing out of the roller slag cooler into the water cooling jacket, one end of the water outlet pipe is connected with a water outlet on the second rotary joint, and the other end of the water outlet pipe is connected with a water inlet arranged at the lower part of the water cooling jacket;
and the hot water recovery pipe is used for recovering high-temperature water flowing out of the water-cooling jacket to external waste heat utilization equipment, and a water outlet arranged at the upper part of the water-cooling jacket is connected with the hot water recovery pipe through a water discharge pipe.
2. The vaporized slag cooling system of claim 1, wherein: the inner wall of the upper part of the storage bin is uniformly provided with a plurality of vertical heat exchange tubes, and the upper ends and the lower ends of the vertical heat exchange tubes are respectively communicated with the water-cooling jacket.
3. The vaporized slag cooling system of claim 1, wherein: and a plunger type automatic control high-temperature valve is arranged at the throat of the storage bin.
4. The vaporized slag cooling system of claim 1, wherein: the water inlet pipe is provided with a first valve, and the water outlet pipe is provided with a second valve.
5. The vaporized slag cooling system of claim 4, wherein: and a pipe section between the second valve and the water outlet on the water outlet pipe is connected with a water outlet branch pipe, the other end of the water outlet branch pipe is communicated with a hot water recovery pipe, and a third valve is arranged on the water outlet branch pipe.
6. The vaporized slag cooling system of claim 1, wherein: and a fourth valve is arranged on the drain pipe.
7. The vaporized slag cooling system of claim 1, wherein: the vaporization slag cooling system further comprises an air cooling pipe for feeding low-temperature air into the roller slag cooler to cool the high-temperature gasification slag, the air cooling pipe is connected with an air inlet arranged in the middle of the material guide inclined pipe, and a fifth valve is arranged on the air cooling pipe.
8. The vaporized slag cooling system of claim 1, wherein: and a sixth valve is arranged on the exhaust pipe.
9. The vaporized slag cooling system of claim 1, wherein: the vaporization slag cooling system further comprises a compressed air conveying pipe for conveying low-temperature compressed air into the upper part in the bag-type dust remover to cool the purified tail gas, the compressed air conveying pipe is connected with a cold air inlet in the side wall of the upper part of the bag-type dust remover, and a seventh valve is arranged on the compressed air conveying pipe.
10. The vaporized slag cooling system of claim 1, wherein: the roller slag cooler is a jacketed slag cooler, a multi-tube water-cooling roller slag cooler or a film roller slag cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248730.6U CN218723406U (en) | 2022-08-25 | 2022-08-25 | Vaporization slag cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222248730.6U CN218723406U (en) | 2022-08-25 | 2022-08-25 | Vaporization slag cooling system |
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| Publication Number | Publication Date |
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| CN218723406U true CN218723406U (en) | 2023-03-24 |
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| CN202222248730.6U Active CN218723406U (en) | 2022-08-25 | 2022-08-25 | Vaporization slag cooling system |
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| CN (1) | CN218723406U (en) |
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2022
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