CN213930936U - Dangerous waste melting and solidifying treatment system - Google Patents
Dangerous waste melting and solidifying treatment system Download PDFInfo
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- CN213930936U CN213930936U CN202022942610.7U CN202022942610U CN213930936U CN 213930936 U CN213930936 U CN 213930936U CN 202022942610 U CN202022942610 U CN 202022942610U CN 213930936 U CN213930936 U CN 213930936U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a hazardous waste processing system specifically is hazardous waste melting solidification processing system. The defects and the problems existing in the traditional metal smelting system for the melting and solidifying treatment of the hazardous wastes are solved. The system comprises a feeding system, a melting furnace, a hot blast furnace system, a flue gas treatment system, a secondary fly ash treatment system and a slag granulation system; the hot blast stove adopts a constant-temperature continuous air supply hot blast stove, and solves the problems that the traditional hot blast stove needs to be changed in stove operation and the air temperature changes. The secondary fly ash treatment system adopts a water seal structure, ensures the required operating environment in the system and avoids leakage, the secondary fly ash falls into a water tank, fly ash slurry is dehydrated by a filter press, and obtained dry ash slag is pressed into blocks by a raw material system for recycling. The system forms one set of complete useless melting solidification of danger and handles the flow, has that the flow is simple, system degree of automation is high, do not discharge the dry ash, and no dust leaks, characteristics that the energy consumption is low.
Description
Technical Field
The utility model relates to a hazardous waste processing system specifically is hazardous waste melting solidification processing system.
Background
At present, the more thorough disposal mode of hazardous waste is to adopt the melting solidification technology, and the vitreous body that the hazardous waste changes into in the high temperature process is very stable in structure, and harmful substance leaching rate is extremely low, can prevent effectively that the pollutant from migrating to the environment.
The melting solidification technology comprises an electric heating type and a fuel type, and the electric heating type has the defects of large energy consumption and high treatment cost and limits the application range; the fuel type has great advantages in China, wide fuel source and low cost, a flue gas treatment system is reasonably configured, and flue gas containing volatile heavy metals such as Pb, Zn, Cd and the like is effectively treated, so that the flue gas is discharged up to the standard, and industrial application can be realized.
The existing fuel type melting and solidifying system mostly adopts the traditional metal smelting process, has the defects of complicated process flow, strong system speciality and high construction cost, for example, a feeding system comprises a raw material bin, a screening system, a weighing device, a powder system, a belt conveyor, a skip car, an inclined bridge and other system facilities; the hot blast stoves are heat accumulating type, have at least two, burn the stove and supply air in turn; dust collected by the flue gas treatment system is discharged by adopting multi-way valve sealing, so that the dust overflows to generate secondary pollution.
Disclosure of Invention
The utility model provides a dangerous waste melting solidification processing use the problem and not enough that traditional metal smelting technology exists, provides a dangerous waste melting solidification processing system. The system has the characteristics of simple flow and low system cost.
The utility model discloses an adopt following technical scheme to realize: the hazardous waste melting and solidifying treatment system comprises a feeding system, a melting furnace, a hot blast furnace system, a flue gas treatment system, a secondary fly ash treatment system and a slag granulation system;
the melting furnace is provided with a feed inlet, a hot air inlet, a furnace gas outlet and a slag discharge port;
the hot blast stove system comprises a cyclone dust collector and a hot blast stove; the cyclone dust collector is provided with an air inlet, an air outlet and a dust removal port, and the air inlet of the cyclone dust collector is communicated with a furnace gas outlet of the melting furnace; the hot blast stove comprises a combustion chamber and a flue communicated with the combustion chamber, the combustion chamber is provided with a fuel inlet and a combustion-supporting air inlet, the fuel inlet of the combustion chamber is communicated with an air outlet of the cyclone dust collector, a heat exchange assembly with a cold air inlet and a hot air outlet is arranged in the flue, the cold air inlet of the heat exchange assembly is connected with a blower, the hot air outlet of the heat exchange assembly is communicated with the hot air inlet of the melting furnace, the bottom of the flue is provided with an ash discharge port, and the lower side part of the flue is provided with a flue gas outlet;
the flue gas treatment system comprises a cooler, a bag-type dust remover, a desulfurization, denitrification and deacidification device, an induced draft fan and a chimney, wherein the cooler is an airflow cavity with a water jacket outside, the airflow cavity is provided with an air inlet and an air outlet, the bottom of the airflow cavity is also provided with a dust leakage opening, the water jacket of the airflow cavity is provided with a cold water inlet and a hot water outlet, and the air inlet of the airflow cavity of the cooler is communicated with a flue gas outlet of a flue of a hot blast stove; the bag-type dust remover is provided with an inlet, an outlet and a dust exhaust port, and the inlet of the bag-type dust remover is communicated with the air outlet of the airflow cavity of the cooler; the desulfurization, denitrification and deacidification device is provided with an inlet and a discharge port, the inlet of the desulfurization, denitrification and deacidification device is communicated with the outlet of the bag-type dust remover, the discharge port of the desulfurization, denitrification and deacidification device is communicated with an induced draft fan, and the induced draft fan is communicated with a chimney;
the secondary fly ash treatment system comprises a water seal water tank, a scraper, a slurry suction pipe, a mortar pump and a filter press; a dust removal port of the cyclone dust collector, an ash discharge port of a flue of the hot blast stove, an ash leakage port of an airflow cavity of the cooler and a dust discharge port of the bag-type dust collector are respectively inserted below the liquid level of the water-sealed water tank through a straight pipe; the scraper machine is arranged at the lower part in the water-sealed water tank, one end of the water-sealed water tank is provided with a water accumulation chamber, one end of the slurry suction pipe extends into the water accumulation chamber, the mortar pump is connected in series with the slurry suction pipe, and the other end of the slurry suction pipe is communicated with the filter press; the slag granulating system comprises a slag discharge groove and a sedimentation water tank, wherein one end of the slag discharge groove is connected with a slag discharge port of the melting furnace, and the other end of the slag discharge groove extends to the sedimentation water tank.
During operation, the raw materials of the melting furnace comprise the hazardous waste, the solvent and the coke after the whole grain processing, the raw materials of the melting furnace are added into the melting furnace through a feeding system, hot air fed from a hot air inlet of the melting furnace is subjected to oxidation reaction with the coke to release a large amount of heat to melt the raw materials, complex chemical and physical reactions are carried out during the oxidation reaction, organic matters are cracked and gasified, inorganic matters are melted at high temperature, heavy metals are oxidized and reduced, and a large amount of heavy metals and other harmful elements are melted into vitrified slag. A large amount of furnace gas generated by the reaction contains a part of combustible gas and dust particles, and is discharged from a furnace gas outlet of the melting furnace. The melting furnace is in a micro negative pressure state and is realized by a draught fan at the tail part of the flue gas treatment system, so that the aim of ensuring no waste gas overflow at the furnace top and subsequent processes is fulfilled.
The method comprises the following steps that dust-containing furnace gas discharged from a melting furnace enters a cyclone dust collector through an air inlet of the cyclone dust collector, large-particle dust is collected, the dust-containing furnace gas falls into a water-sealed water tank through a straight pipe from a dust removing port at the lower part of the cyclone dust collector, the primarily purified furnace gas is discharged through an air outlet of the cyclone dust collector and enters a combustion chamber of a hot blast furnace through a fuel inlet of the combustion chamber of the hot blast furnace, combustible burning therein reacts with oxygen in combustion-supporting air entering from a combustion-supporting air inlet, heat is generated by combustion, cold air blown in from a blower at a cold air inlet of a heat exchange assembly is heated through a heat exchange assembly of the hot blast furnace, and the generated hot air enters the melting furnace through a hot; the flue gas dust generated by combustion falls into the water-sealed water tank from the ash discharge port at the bottom of the flue through the straight pipe.
The flue gas generated by combustion in the hot blast stove still has high temperature of nearly 500 ℃, is discharged from a flue gas outlet of a flue of the hot blast stove, enters a cooler through an air inlet of the cooler, is cooled to below 100 ℃ through the cooler, and hot water discharged from a hot water outlet of the cooler can utilize waste heat, wherein the flue gas is further purified, and dust in the flue gas falls into a water-sealed water tank through a dust leakage port at the bottom of an airflow cavity of the cooler through a straight pipe; flue gas exhausted from an air outlet of an air flow cavity of the cooler enters the bag-type dust remover through an inlet of the bag-type dust remover, dust in the flue gas is filtered to be below 10mg/m in length, and the dust collected by the bag-type dust remover falls into a water seal water tank through a dust discharge port at the bottom of the bag-type dust remover through a straight pipe; from the export exhaust flue gas of sack cleaner, get into SOx/NOx control deacidification device through SOx/NOx control deacidification device's entry, handle through SOx/NOx control deacidification device, reach national fume emission standard, send the chimney by the draught fan at last and arrange to the atmosphere in.
The dust particles and dust discharged by the hot blast stove, the cyclone dust collector, the cooler and the bag-type dust collector, namely secondary fly ash, are discharged into the water-sealed water tank through the straight pipe and are dissolved in water flow in the water-sealed water tank, the straight pipe is inserted under the liquid level of the water-sealed water tank to realize water sealing so as to keep the micro-negative pressure state of system operation, the sediment at the bottom of the water-sealed water tank is scraped to a water accumulation chamber at one end of the water-sealed water tank by the scraper machine, the slurry pump pumps slurry containing secondary fly ash to the filter press through the slurry suction pipe, the filter press separates the slurry into secondary fly ash and water, and the separated secondary fly ash is returned to the raw material processing system as dangerous waste to be processed into blocks.
And discharging the slag liquid melted in the melting furnace into a sedimentation tank from a slag discharge port through a slag discharge groove, wherein the slag liquid is cracked into particles when meeting water, and the granulated glassy slag in the sedimentation tank is fished out by a grab bucket machine and is loaded and transported outside to be used as road building materials or cement aggregates and the like.
Dangerous waste melting solidification processing system, adopt the flue gas processing system of feeding system, melting furnace, hot-blast furnace, water seal structure, secondary flying dust processing system and slag granulation system, form one set of complete useless melting solidification of danger and handle the flow, it is high, do not discharge dry ash to have a flow simple, system degree of automation, no dust leakage, characteristics that the energy consumption is low have solved the secondary pollution problem among the dangerous waste disposal process, handle the danger for the industrialization and be useless, solidification harmful material provides effective way. The hot blast stove adopts a constant-temperature continuous air supply hot blast stove, and solves the problems that the traditional hot blast stove needs to be changed in stove operation and the air temperature changes. The secondary fly ash treatment system adopts a water seal structure, ensures the required operating environment in the system and avoids leakage, the secondary fly ash falls into a water tank, fly ash slurry is dehydrated by a filter press, and obtained dry ash slag is pressed into blocks by a raw material system for recycling.
Drawings
FIG. 1 is a schematic structural diagram of a hazardous waste melting and solidifying treatment system according to the present invention;
FIG. 2 is a schematic structural diagram of a slag granulation system of the hazardous waste melting and solidifying treatment system of the present invention;
fig. 3 is a side view of fig. 2.
In the figure: 1-crane, 2-raw material bin, 3-vibrating feeder, 4-self-dumping truck, 5-guide rail, 6-elevator guide rail, 7-elevator, 8-counterweight, 9-furnace top guide rail, 10-melting furnace, 11-cyclone dust collector, 12-hot blast furnace, 13-cooler, 14-bag dust collector, 15-desulfurization, denitrification and deacidification device, 16-induced draft fan, 17-chimney, 18-water seal water tank, 19-scraper blade machine, 20-slurry suction pipe, 21-clean water pipe, 22-mortar pump, 23-vacuum pump, 24-filter press, 25-slag storage hopper, 26-slag discharge tank, 27-slag flushing tank, 28-slag flushing water nozzle and 29-sedimentation water tank.
Detailed Description
The hazardous waste melting and solidifying treatment system comprises a feeding system, a melting furnace, a hot blast furnace system, a flue gas treatment system, a secondary fly ash treatment system and a slag granulation system;
the melting furnace 10 is provided with a feed inlet, a hot air inlet, a furnace gas outlet and a slag discharge port;
the hot blast stove system comprises a cyclone dust collector 11 and a hot blast stove 12; the cyclone dust collector 11 is provided with an air inlet, an air outlet and a dust removal port, and the air inlet of the cyclone dust collector 11 is communicated with a furnace gas outlet of the melting furnace 10; the hot blast stove 12 comprises a combustion chamber and a flue communicated with the combustion chamber, the combustion chamber is provided with a fuel inlet and a combustion-supporting air inlet, the fuel inlet of the combustion chamber is communicated with an air outlet of the cyclone dust collector, a heat exchange assembly with a cold air inlet and a hot air outlet is arranged in the flue, the cold air inlet of the heat exchange assembly is connected with a blower, the hot air outlet of the heat exchange assembly is communicated with the hot air inlet of the melting furnace, the bottom of the flue is provided with an ash discharge port, and the lower side part of the flue is provided with a flue gas outlet; in specific implementation, the heat exchange component is made of high-temperature-resistant silicon carbide material;
the flue gas treatment system comprises a cooler 13, a bag-type dust collector 14, a desulfurization, denitrification and deacidification device 15, an induced draft fan 16 and a chimney 17, wherein the cooler 13 is an airflow cavity with a water jacket on the outer part, the airflow cavity is provided with an air inlet and an air outlet, the bottom of the airflow cavity is also provided with a dust leakage port, the water jacket of the airflow cavity is provided with a cold water inlet and a hot water outlet, and the air inlet of the airflow cavity of the cooler 13 is communicated with a flue gas outlet of a flue of a hot blast stove 12; the bag-type dust collector 14 is provided with an inlet, an outlet and a dust exhaust port, and the inlet of the bag-type dust collector 14 is communicated with the air outlet of the airflow cavity of the cooler 13; the desulfurization, denitrification and deacidification device 15 is provided with an inlet and a discharge port, the inlet of the desulfurization, denitrification and deacidification device 15 is communicated with the outlet of the bag-type dust remover 14, the discharge port of the desulfurization, denitrification and deacidification device 15 is communicated with an induced draft fan 16, and the induced draft fan 16 is communicated with a chimney 17;
the secondary fly ash treatment system comprises a water seal water tank 18, a scraper machine 19, a slurry suction pipe 20, a mortar pump 22 and a filter press 24; a dust removal port of the cyclone dust collector 11, an ash discharge port of a flue of the hot blast stove 12, an ash leakage port of an airflow cavity of the cooler 13 and a dust discharge port of the bag-type dust collector 14 are respectively inserted below the liquid level of the water-sealed water tank 18 through straight pipes; the scraper machine 19 is arranged at the lower part in the water-sealed water tank 18, one end of the water-sealed water tank 18 is provided with a water accumulation chamber, one end of a slurry suction pipe 20 extends into the water accumulation chamber, a mortar pump 22 is connected in series with the slurry suction pipe 20, and the other end of the slurry suction pipe 20 is communicated with a filter press 24; during specific implementation, a scraper 19 is arranged at the lower part in the water-sealed water tank 18, a water accumulation chamber is arranged at one end of the water-sealed water tank 18, sediment at the bottom of the water-sealed water tank 18 is scraped to the water accumulation chamber at one end of the water-sealed water tank 18 by the scraper 19, and one end of a pulp suction pipe 20 extends into the water accumulation chamber. The filter press 24 is a known product, and is equipped with a vacuum pump 23, and has a clean water pipe 21 for leading out clean water, and the clean water pipe 21 extends into the water-sealed tank 18. Secondary flying ash and water are extracted and separated by a vacuum pump 23, the separated secondary flying ash falls into a slag storage hopper 25 and is sent back to a raw material processing system for briquetting processing as hazardous waste, and separated clear water returns to the water seal water tank 18 through a clear water pipe 21.
The slag granulating system comprises a slag discharging groove 26 and a sedimentation water tank 29, wherein one end of the slag discharging groove 26 is connected with a slag discharging port of the melting furnace 10, and the other end of the slag discharging groove 26 extends to the sedimentation water tank 29. In specific implementation, a slag flushing groove 27 is arranged between the other end of the slag discharging groove 26 and the sedimentation water tank 29, one end of the slag flushing groove 27 is connected with the other end of the slag discharging groove 26, and the other end of the slag flushing groove 27 extends to the sedimentation water tank 29; the slag flushing water spray nozzle 28 is fixed at one end of the slag flushing groove 27, the slag falling into the slag flushing groove 27 through the slag discharging groove 26 is impacted into granules by high-pressure water flow sprayed by the slag flushing water spray nozzle 28 and flows into the precipitation water tank 29 along with the water flow, compared with the situation that the slag directly flows into the precipitation water tank to be exploded into granules, the slag granulation effect can be obviously improved by adding the slag flushing groove 27 and the slag flushing water spray nozzle 28. The water sprayed out of the slag flushing water nozzle 28 and flowing into the sedimentation water tank is circulated and then sprayed out of the slag flushing water nozzle 28.
The feeding system comprises a crane 1, a raw material bin 2, a vibrating feeder 3 arranged at a discharge port of the raw material bin 2, a guide rail 5 positioned below the raw material bin 2 and extending to the top of the melting furnace 10, and a dump truck 4 positioned on the guide rail 5. During operation, the dump truck 4 moves to the lower part of the raw material bin 2, the vibrating feeder 3 is opened, feeding is carried out in the dump truck 4, the vibrating feeder 3 is closed to stop feeding, the dump truck 4 moves to the top of the melting furnace 10 along the guide rail and unloads, and feeding to the melting furnace 10 is completed. When the height difference exists between the guide rail below the raw material bin 2 and the guide rail at the top of the melting furnace 10, the feeding system further comprises an elevator 7, an elevator guide rail 6 is arranged in the elevator 7, the dump truck 4 moves into the elevator 7 along the elevator guide rail 6, the elevator 7 lifts the dump truck 4 to the height of the top of the melting furnace 10, and then the dump truck moves to the position above the top of the melting furnace 10 along the guide rail above the top of the melting furnace 10. The dump truck 4 moves and depends on manpower or controlled motor drive wheel, utilizes from taking the battery to provide the power when depending on controlled motor drive wheel, and the battery relies on guide rail 5 to provide low pressure charging source.
Dangerous waste raw materials subjected to whole grain treatment from a raw material system, solvents, coke and other raw materials are loaded into a raw material bin through a crane or a loader, a self-discharging truck moves to a position below a corresponding bin according to the requirements of the process on the feeding variety and quantity, a vibrating feeder is started, feeding to the self-discharging truck is started, the set weight is reached, the vibrating feeder is closed, the self-discharging truck travels to the top of a melting furnace on a furnace top platform, a receiving hopper of the melting furnace is aligned, and blanking is started through self-discharging.
The working process of the hazardous waste melting and solidifying treatment system is as follows: dangerous waste raw materials after whole grain treatment, raw materials such as solvent and coke are loaded into a raw material bin through a crane or a loader, a dump truck travels to the position below the corresponding raw material bin, a vibrating feeder is started, the dump truck starts to feed materials, the vibrating feeder is closed after the dump truck is full or reaches the required weight, the dump truck travels to the top of a melting furnace, a receiving hopper of the melting furnace is aligned, and self-discharging blanking is carried out (the raw material bin and the top of the melting furnace are not on the same-layer platform, a lifting machine can be arranged, and the dump truck is lifted to the top platform).
After the raw materials enter the melting furnace, a series of reactions are completed in the furnace, in order to prevent waste gas from being discharged from the top of the furnace, the melting furnace adopts micro negative pressure operation, and the pressure of a gas collecting chamber in the furnace is-10 kp. The negative pressure is realized by a draught fan at the tail part of the flue gas treatment system, and the furnace top and the subsequent processes are ensured not to overflow waste gas. Liquid slag obtained through high temperature in the furnace is discharged to a slag granulation system from a slag discharge port, and furnace gas generated by reaction is discharged to a hot blast furnace system from a furnace gas outlet of the melting furnace.
In the slag granulating system, slag flows to a slag flushing tank through a slag discharging tank, a slag flushing water spray nozzle is arranged at the end part of the slag flushing tank, high-pressure water from a slag flushing pump room is sprayed to the slag flow at a high speed through the nozzle to scatter and granulate the slag flow, the slag flow flows to a sedimentation water tank along the slag flushing tank, in the sedimentation water tank, granulated glassy slag is fished out by a grab bucket machine and is loaded and transported outside for use as road building materials or cement aggregates and the like, and clarified water returns to the slag flushing pump room for reuse.
In a hot blast stove system, furnace gas firstly enters a cyclone dust collector to collect large-particle dust, the large-particle dust falls into a water-sealed water tank from the lower part, primarily purified waste gas enters a combustion chamber at the top of the hot blast stove, combustible combustion components react with oxygen in combustion-supporting air, the combustion temperature is 1200 ℃, a large amount of heat energy is generated, cold air blown by a blower is heated through a silicon carbide heat exchange component of the hot blast stove, and hot air with the temperature of about 900 ℃ is blown into a stove cylinder from a hot air inlet of a melting furnace.
The flue gas that comes out from the hot-blast furnace still has nearly 500 ℃ high temperature, reduces the temperature to below 100 ℃ through the cooler, gets into the sack cleaner and filters the particulate matter to below 10mg/m year, and the rethread SOx/NOx control deacidification device is handled, reaches national fume emission standard, sends the chimney by the draught fan at last and arranges to the atmosphere.
Claims (7)
1. A dangerous waste melting and solidifying treatment system is characterized by comprising a feeding system, a melting furnace, a hot blast furnace system, a flue gas treatment system, a secondary fly ash treatment system and a slag granulation system;
the melting furnace (10) is provided with a feed inlet, a hot air inlet, a furnace gas outlet and a slag discharge port;
the hot blast stove system comprises a cyclone dust collector (11) and a hot blast stove (12); the cyclone dust collector (11) is provided with an air inlet, an air outlet and a dust removal port, and the air inlet of the cyclone dust collector (11) is communicated with a furnace gas outlet of the melting furnace (10); the hot blast stove (12) comprises a combustion chamber and a flue communicated with the combustion chamber, the combustion chamber is provided with a fuel inlet and a combustion-supporting air inlet, the fuel inlet of the combustion chamber is communicated with an air outlet of the cyclone dust collector, a heat exchange assembly with a cold air inlet and a hot air outlet is arranged in the flue, the cold air inlet of the heat exchange assembly is connected with a blower, the hot air outlet of the heat exchange assembly is communicated with the hot air inlet of the melting furnace, the bottom of the flue is provided with an ash discharge port, and the lower side part of the flue is provided with a flue gas outlet;
the flue gas treatment system comprises a cooler (13), a bag-type dust remover (14), a desulfurization, denitrification and deacidification device (15), an induced draft fan (16) and a chimney (17), wherein the cooler (13) is an airflow cavity with a water jacket outside, the airflow cavity is provided with an air inlet and an air outlet, the bottom of the airflow cavity is also provided with a dust leakage port, the water jacket of the airflow cavity is provided with a cold water inlet and a hot water outlet, and the air inlet of the airflow cavity of the cooler (13) is communicated with a flue gas outlet of a flue of a hot blast stove (12); the bag-type dust collector (14) is provided with an inlet, an outlet and a dust exhaust port, and the inlet of the bag-type dust collector (14) is communicated with the air outlet of the airflow cavity of the cooler (13); the desulfurization, denitrification and deacidification device (15) is provided with an inlet and a discharge port, the inlet of the desulfurization, denitrification and deacidification device (15) is communicated with the outlet of the bag-type dust remover (14), the discharge port of the desulfurization, denitrification and deacidification device (15) is communicated with an induced draft fan (16), and the induced draft fan (16) is communicated with a chimney (17);
the secondary fly ash treatment system comprises a water seal water tank (18), a scraper (19), a slurry suction pipe (20), a mortar pump (22) and a filter press (24); a dust removal port of the cyclone dust collector (11), an ash discharge port of a flue of the hot blast stove (12), an ash leakage port of an airflow cavity of the cooler (13) and a dust discharge port of the bag-type dust collector (14) are respectively inserted below the liquid level of the water-sealed water tank (18) through straight pipes; the scraper conveyor (19) is arranged at the lower part in the water-sealed water tank (18), one end of the water-sealed water tank (18) is provided with a water accumulation chamber, one end of a slurry suction pipe (20) extends into the water accumulation chamber, a mortar pump (22) is connected to the slurry suction pipe (20) in series, and the other end of the slurry suction pipe (20) is communicated with a filter press (24);
the slag granulation system comprises a slag discharge groove (26) and a precipitation water tank (29), one end of the slag discharge groove (26) is connected with a slag discharge port of the melting furnace (10), and the other end of the slag discharge groove (26) extends to the precipitation water tank (29).
2. A hazardous waste melt-solidification processing system according to claim 1, wherein the filter press (24) is provided with a vacuum pump (23) and has a clean water pipe (21) for leading out clean water, the clean water pipe (21) extending into the water-sealed tank (18).
3. The hazardous waste melting and solidifying treatment system according to claim 1 or 2, wherein a slag flushing groove (27) is arranged between the other end of the slag discharging groove (26) and the sedimentation water tank (29), one end of the slag flushing groove (27) is connected to the other end of the slag discharging groove (26), and the other end of the slag flushing groove (27) extends to the sedimentation water tank (29); a slag flushing water nozzle (28) is fixed at one end part of the slag flushing groove (27).
4. A hazardous waste melt-solidification processing system according to claim 3, wherein the heat exchange assembly in the hot blast stove (12) is made of a silicon carbide material.
5. The hazardous waste melting and solidifying treatment system according to claim 3, wherein the feeding system comprises a crane (1), a raw material bin (2), a vibrating feeder (3) arranged at a discharge port of the raw material bin (2), a guide rail (5) positioned below the raw material bin (2) and extending to the top of the melting furnace (10), and a self-discharging truck (4) positioned on the guide rail (5).
6. The hazardous waste melting and solidifying treatment system according to claim 5, wherein when there is a height difference between the lower guide rail of the raw material bin (2) and the top guide rail of the melting furnace (10), the charging system further comprises a lifter (7), and the lifter guide rail (6) is arranged in the lifter (7).
7. A hazardous waste melting and solidifying treatment system according to claim 6, characterized in that the dumper (4) is driven by controlled electric motors to drive wheels, and the power is supplied by a self-contained storage battery which is supplied with low-voltage charging power by a guide rail (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022942610.7U CN213930936U (en) | 2020-12-11 | 2020-12-11 | Dangerous waste melting and solidifying treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022942610.7U CN213930936U (en) | 2020-12-11 | 2020-12-11 | Dangerous waste melting and solidifying treatment system |
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| Publication Number | Publication Date |
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| CN213930936U true CN213930936U (en) | 2021-08-10 |
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| CN202022942610.7U Active CN213930936U (en) | 2020-12-11 | 2020-12-11 | Dangerous waste melting and solidifying treatment system |
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