CN211413145U - Waste paint bucket plasma resource recovery system - Google Patents
Waste paint bucket plasma resource recovery system Download PDFInfo
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- CN211413145U CN211413145U CN201922148711.4U CN201922148711U CN211413145U CN 211413145 U CN211413145 U CN 211413145U CN 201922148711 U CN201922148711 U CN 201922148711U CN 211413145 U CN211413145 U CN 211413145U
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Abstract
The utility model discloses a waste paint bucket plasma resourceful recovery system, include: 1) pretreating a waste paint bucket to form a raw material containing paint fragments; 2) conveying the raw materials containing the paint fragments into a plasma gasification cracking furnace through a feeding device, and gasifying and cracking organic substances; 3) and (3) the synthesis gas generated by cracking the organic components in the raw materials containing the paint fragments enters a secondary combustion chamber for secondary combustion, and the heavy metals in the raw materials containing the paint fragments are discharged from the bottom of the plasma gasification cracking furnace through a rotary slag discharging machine and are recovered. The utility model discloses to pass through cyclone's partly flue gas circulation to plasma gasification pyrolysis furnace bottom fuel feeding lacquer schizolysis, pass through air heater with another part flue gas and heat to the temperature of needs to cyclic utilization is to the tonifying wind of plasma gasification pyrolysis furnace and second combustion chamber, has effectively utilized the temperature of flue gas after cyclone to be preserved through air heater, and has practiced thrift the energy.
Description
Technical Field
The utility model relates to a waste paint bucket plasma resourceful recovery system belongs to waste paint bucket and retrieves technical field.
Background
The waste paint bucket refers to a waste packing material after paint is used, and the bucket contains or is directly infected with original paint. The substance mainly comprises four parts of a film forming substance, a filler (pigment and filler), a solvent and an auxiliary agent. The film-forming substance is also called as binder, and is formed by high-temperature reaction of mixed ingredients such as organic high-molecular compounds including natural resin (rosin and lacquer), paint (tung oil, linseed oil, soybean oil, fish oil and the like), synthetic resin and the like, and is a main body of the paint and determines the performance of a paint film. The existence of the film forming substance leads to the residual paint film attached in the waste paint bucket, which is not easy to be removed.
The waste paint bucket that produces in a large amount in the economic action process of current enterprise can not dispose it with harmlessness finally. The current method for treating waste paint barrels is as follows: and the recycling station directly compacts or crushes the reclaimed waste paint barrels and sells the crushed waste paint barrels to small-sized steel-making enterprises. Although the method forms the recycling of the waste paint bucket, the residual chemical materials in the waste paint bucket are not effectively separated from the container and properly disposed in the utilization process, but directly enter the link of return smelting, so that the consequences of large smoke and pollution to the atmospheric environment in the smelting process are caused, and the subsequent formed steel has the problems of high sulfur content and poor quality.
Therefore, in the recycling process of the waste paint bucket, the residual working materials in the bucket are effectively separated from the materials of the bucket, so that the problem to be solved urgently is solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a waste paint bucket plasma resource recovery system, heavy metal in can more effectual recovery waste paint bucket, more thorough solution waste paint bucket's innoxious, resourceful treatment, the waste heat carries out reutilization among the recovery process, improves energy utilization rate, safe and reliable.
In order to achieve the purpose, the utility model provides a waste paint bucket plasma resourceful recovery system, including consecutive preprocessing device, feed arrangement, plasma gasification pyrolysis furnace, second combustion chamber, cyclone, air heater, spray cooling tower, drum dust remover, fan and chimney.
And a rotary slag discharging machine is arranged at the lower part of the plasma gasification cracking furnace.
The rotary slag discharging machine comprises a multilayer disc structure fixedly arranged at the lower part of the plasma gasification cracking furnace, a rotating shaft rotatably arranged at the center of the multilayer disc structure and a rake rod fixedly arranged on the rotating shaft; multilayer disc structure includes from last first disc and the second disc of to concentric crisscross setting down, the diameter of first disc is greater than the diameter of second disc, the feed opening has been seted up to one side that first disc is close to the rotation axis, all be provided with a rake lever between first disc and the second disc, the rake lever that is located first disc top has forward harrow leaf, and the rake lever that is located the second disc top has reverse harrow leaf.
The outlet end of the cyclone separator is respectively connected with the air preheater and the plasma gasification cracking furnace.
And the outlet end of the air preheater is respectively connected with the secondary combustion chamber, the plasma gasification cracking furnace and the spray cooling tower.
At least 2 SNCR spray guns are arranged in the cyclone separator.
The spray cooling tower comprises a quench tower and an alkali liquor spray device, the quench tower is respectively connected with the air preheater and the cylindrical dust remover, the alkali liquor spray device comprises an alkali liquor tank, a spray pump and an alkali liquor spray gun which are sequentially connected, and the alkali liquor spray gun is arranged in the quench tower.
The system has the following beneficial effects:
(1) the furnace type and the rotary slag discharging machine are designed aiming at the characteristics of lower heat value, higher stacking density and the like of waste paint bucket fragments, and can meet the requirement of treatment capacity on the premise of ensuring the treatment effect.
(2) Through setting up rotatory mucking machine, lengthened the reaction time of material piece in plasma gasification pyrolysis furnace, the material piece constantly rolls at this in-process and does not have the dead angle, and the gasification pyrolysis is abundant, has guaranteed that there is sufficient time to carry out the gasification pyrolysis in the organic component gets into the stove in the cubic piece after, and the heavy metal sediment reachs the stove bottom and discharges, through the shrend cooling, can regard as the recycle resource.
The utility model discloses another aspect provides a waste paint bucket plasma resource recovery technology, including following step:
(1) pretreating a waste paint bucket to form a raw material containing paint fragments;
(2) conveying the raw material containing the paint fragments into a plasma gasification cracking furnace through a feeding device, and gasifying and cracking organic substances;
(3) the synthesis gas generated by cracking the organic components in the raw materials containing the paint fragments enters a secondary combustion chamber for secondary combustion, and heavy metals in the raw materials containing the paint fragments are discharged from the bottom of the plasma gasification cracking furnace through a rotary slag discharging machine and are recovered;
(4) after secondary combustion in the secondary combustion chamber, the flue gas enters a cyclone separator for dust removal, and nitrogen oxides are removed through an SNCR spray gun;
(5) the flue gas treated in the step (4) enters a spray cooling tower to remove acid gas and is cooled;
(6) enabling the flue gas treated in the step (5) to enter a cylindrical dust remover, wherein an activated carbon blowing system is arranged in front of the cylindrical dust remover, and removing dust and solid salt carried in the flue gas;
(7) and (4) pumping the flue gas treated in the step (6) out by a fan, and discharging the flue gas into the atmosphere through a chimney.
In the step (1), the waste paint bucket is pretreated to form a raw material containing paint fragments, and the method specifically comprises the following steps: and (3) crushing the waste paint bucket into block fragments with the length and the width not more than 100 x 100mm by a four-shaft crusher.
In the step (2), 650 ℃ air generated by an air preheater is selected as the air supplement at the bottom of the plasma gasification cracking furnace. The plasma gasification cracking furnace is provided with a pressure sensor and a temperature sensor, after organic components in the raw materials containing the paint fragments are fully cracked and gasified in a rotary slag discharging machine, the residual heavy metal part is discharged through a slag outlet at the bottommost part of the furnace body, and the heavy metal is periodically recovered. The slag hole is connected with the water quenching cooling system, and the bottom of the plasma gasification cracking furnace is provided with a plasma torch mounting hole, a burner mounting hole, an observation hole and the like. Wherein, a water-cooling or air-cooling protection device is needed at the position of the plasma torch.
In the step (3), the secondary combustion chamber is provided with a secondary combustion chamber air supply port and a secondary combustion chamber combustor, and the flue gas is ensured to stay in the secondary combustion chamber for 2 seconds at 1100 ℃. The secondary combustion chamber air supply port selects 650 ℃ air generated by an air preheater.
In the step (4), one part of the flue gas passing through the cyclone separator enters the bottom of the plasma gasification cracking furnace to be cracked by the oil supply paint, and the other part of the flue gas enters the air preheater to generate 650 ℃ air which is used as an oxidant to enter a secondary combustion chamber and the plasma gasification cracking furnace. The cyclone separator can be designed to be used and spare, at least 2-3 SNCR spray gun points and temperature sensors are arranged in the cyclone separator, and suitable temperature points are selected to spray ammonia water at 850-.
In the step (5), the spray cooling tower is a combination of a deacidification tower and a quench tower, and the spray alkali liquor and the flue gas flow downstream. The temperature of the flue gas is reduced to below 200 ℃, so that the generation of dioxin is avoided, and meanwhile, the acidic components in the flue gas are removed.
In the step (6), the drum dust remover adopts an online soot blowing mode, and the dust content in the smoke at the outlet can be reduced to 10mg/Nm3。
In the step (7), the fan is a centrifugal fan, and the material is titanium alloy or glass fiber reinforced plastic in order to meet the requirements on corrosion and temperature.
By adopting the process, the following beneficial effects are achieved:
(1) one part of the flue gas passing through the cyclone separator is circulated to the bottom of the plasma gasification cracking furnace for oil paint cracking, the other part of the flue gas is heated to the required temperature through an air heater and is recycled to the plasma gasification cracking furnace and the secondary combustion chamber for air supplement, the temperature of the flue gas passing through the cyclone separator is effectively utilized through an air preheater at 950-1050 ℃, and the energy is saved.
(2) The hydroxyl free radical generated by the plasma can fully crack the chlorine-containing organic waste, the destruction rate of the dioxin reaches 99.9999 percent, and HCl, CO and H are formed2And the like. The heavy metal components are discharged outside and can be used as recycling resources.
(3) 650 ℃ air generated by an air preheater is selected as air for air supplement at the bottom of the plasma gasification cracking furnace, so that the temperature in the furnace can be effectively increased while waste heat is recovered, and the complete cracking of organic components is ensured.
Drawings
FIG. 1 is a schematic structural view of a plasma resource recycling system for a waste paint bucket of the present invention;
fig. 2 is a schematic structural view of the rotary slag extractor of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, a waste paint bucket plasma resource recycling system comprises a pretreatment device 12, a feeding device 13, a plasma gasification cracking furnace 1, a secondary combustion chamber 2, a cyclone separator 3, an air preheater 5, a spray cooling tower 6, an active carbon blowing device 7, a cylindrical dust remover 8, a fan 9 and a chimney 10 which are connected in sequence.
The pretreatment device 12 is a crushing device, which is a conventional device, and the specific structure thereof is not described in detail herein.
Wherein, feed arrangement 13 includes breaker, feed bin, weighing device, scraper blade, spiral, push-pull valve and discharge valve, and feed arrangement 13 is prior art, and feed arrangement 13 sets up the upper portion at plasma gasification pyrolysis furnace 1.
The air preheater 5 produces 650 ℃ air, the plasma gasification cracking furnace 1 is supplemented with hot air through the cracking furnace air supplement port 14 of the plasma gasification cracking furnace 1, and the circulating hot flue gas is added, so that the temperature of the rotary slag extractor 20 of the plasma gasification cracking furnace 1 reaches over 900 ℃, and the thorough cracking of organic substances in the fragment raw materials is ensured. Plasma gasification pyrolysis furnace 1 bottom is equipped with heavy metal slag notch 16, and heavy metal slag notch 16 is in plasma gasification pyrolysis furnace 1's furnace body bottommost, and the periodic recovery heavy metal, heavy metal slag notch 16 link to each other with slag discharging device 17, and slag discharging device 17 includes shrend cooling system, and the heavy metal sediment passes through the shrend cooling, can regard as the recycle resource. The plasma gasification cracking furnace 1 also comprises a cracking furnace burner 15, a cracking furnace plasma torch mounting hole 19, a circulating fan 18 for refluxing partial treated gas and other conventional structures.
Wherein, the second combustion chamber 2 is provided with a second combustion chamber air supply port 11, a second combustion chamber plasma torch mounting port 21 and a second combustion chamber burner 22, 650 ℃ hot air is selected as second combustion chamber air supply, the combustion temperature of the second combustion chamber 2 is not lower than 1100 ℃, and the retention time of the synthesis gas in the second combustion chamber 2 is not less than 2 s. The secondary combustion chamber 2 is also provided with an emergency discharge device which is a weight type explosion-proof valve, when the furnace is in overpressure, the valve plate is automatically opened by pressure, and after pressure is released, the valve plate is automatically reset by gravity.
As shown in fig. 2, the rotary slag extractor 20 includes a multi-layer disc structure fixedly disposed at the lower part of the plasma gasification cracking furnace 1, a rotating shaft 530 rotatably disposed at the center of the multi-layer disc structure, and a rake 540 fixedly disposed on the rotating shaft 530; the multilayer disc structure comprises a first disc 510 and a second disc 520 which are concentrically and alternately arranged from top to bottom, the diameter of the first disc 510 is larger than that of the second disc 520, a feed opening 550 is formed in one side, close to a rotating shaft 530, of the first disc 510, the distance from the feed opening 550 to the rotating shaft is smaller than that of the second disc 520, fragments falling from the feed opening 550 can fall on the second disc 520, a rake rod 540 is arranged in each gap between the first disc 510 and the second disc 520, the rake rod 540 above the first disc 510 is provided with a forward rake blade for guiding the fragments into the feed opening 550, and the rake rod 540 above the second disc 520 is provided with a reverse rake blade for pushing the fragments out of the second disc 520 and falling onto the first disc 510.
When the slag discharging machine 20 works, the material fragments fall onto the uppermost multi-layer disc structure, the rotating shaft 530 rotates to drive the raking arm 540 to rotate, the material fragments on the first disc 510 are gradually brought to the rotating shaft 530 direction under the action of the forward raking blades and finally fall onto the second disc 520 from the feed opening 550, the material fragments on the second disc 520 are gradually pushed to the outer side of the second disc 520 and fall onto the first disc 510 under the action of the reverse raking blades, and the material fragments are circulated and finally fall onto the slag outlet 110 at the bottom of the plasma gasification cracking furnace 1 to discharge slag. Set up rotatory sediment machine 20, lengthened the reaction time of material piece in plasma gasification pyrolysis furnace 1, the material piece constantly rolls at this in-process and does not have the dead angle, and the gasification schizolysis is abundant, has guaranteed that there is sufficient time to carry out the gasification schizolysis after organic component gets into the stove in the cubic piece, and the heavy metal sediment reachs the stove bottom and discharges, through the quenching cooling, can regard as recycle resource.
Wherein, at least 2 SNCR spray guns 4 are arranged in the cyclone separator 3. Part of the dust-removing flue gas passing through the cyclone separator 3 enters the bottom of the plasma gasification cracking furnace to provide capacity for cracking and gasifying the waste paint; one portion enters the air preheater 5.
Wherein, the dedusting flue gas cooled by the air preheater 5 enters a spray cooling tower 6; the air heated by the air preheater is taken as an oxidant to enter a secondary combustion chamber air supply port 11 of the secondary combustion chamber 2 and a cracking furnace air supply port 14 of the plasma gasification cracking furnace 1.
Wherein, spray cooling tower 6 includes quench tower and alkali lye spray set, and the quench tower is connected with air heater 5 and drum dust remover 8 respectively, and alkali lye spray set is including consecutive alkali lye jar 24, spray pump 25 and alkali lye spray gun 26, and alkali lye spray gun 26 sets up in the quench tower. The spray cooling tower 6 is subjected to deacidification treatment while quenching, no wastewater is discharged, the flue gas and the alkali liquor flow in from the top of the tower, the temperature of the flue gas is quenched to 200 ℃, and the generation of dioxin is avoided.
Wherein, be equipped with active carbon jetting device 7 between spray cooling tower 6 and drum dust remover 8, jetting device 7 can ensure the emission up to standard of heavy metal, dioxin, acid gas in the flue gas when controlling to get into drum dust remover 8 moisture.
Wherein, the cylinder dust remover 8 adopts an online soot blowing mode, and the dust content in the smoke at the outlet can be reduced to 10mg/Nm3。
Wherein, the fan 9 is a centrifugal fan, and the material is titanium alloy or glass fiber reinforced plastic to meet the requirements of corrosion and temperature.
Wherein, the chimney 10 is the titanium material of carbon steel plating, satisfies temperature and standard requirement.
The plasma resource recycling process for the waste paint bucket specifically comprises the following steps:
(1) waste paint barrels with different specifications are crushed into block-shaped fragments with the length and the width not more than 100 x 100mm by a four-shaft crusher 12.
(2) The massive fragments are conveyed into the plasma gasification cracking furnace 1 through the feeding device 13 for gasification cracking, and the air supplement of the plasma gasification cracking furnace 1 is hot air at 650 ℃, so that the temperature of the rotary slag extractor 20 of the plasma gasification cracking furnace 1 reaches over 900 ℃, and the thorough cracking of organic components in the fragment raw materials is ensured.
(3) The synthetic gas generated by cracking the organic components in the blocky fragments enters a secondary combustion chamber 2 for secondary combustion, the combustion temperature of the secondary combustion chamber 2 is not lower than 1100 ℃, and the residence time of the synthetic gas in the secondary combustion chamber 2 for combustion is not less than 2 s; inorganic components in the fragment raw materials are conveyed to the bottom of the plasma gasification cracking furnace 1 through a rotary slag discharging machine 20 and discharged through a slag discharging device 17 for recycling.
(4) The flue gas after secondary combustion in the secondary combustion chamber 2 enters a cyclone separator 3 for dust removal, dust with the particle size of more than 5 microns is removed, and nitrogen oxides are removed through an SNCR spray gun 4;
(5) the flue gas treated in the step (4) enters a spray cooling tower to remove acid gas and is cooled to 200 ℃, so that the generation of dioxin is avoided;
(6) the flue gas treated in the step (5) enters a cylindrical dust remover 8 to remove dust and solid salt carried in the flue gas;
(7) and (4) extracting the flue gas treated in the step (6) by a fan 9, and exhausting the flue gas into the atmosphere through a chimney 10. The treated flue gas is discharged into the atmosphere, wherein the emission concentration and the emission rate of the polluted gas to the environment are lower than the emission standards regulated by the related national standards.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A waste paint bucket plasma resource recovery system is characterized by comprising a pretreatment device, a feeding device, a plasma gasification cracking furnace, a secondary combustion chamber, a cyclone separator, an air preheater, a spray cooling tower, a cylindrical dust remover, a fan and a chimney which are sequentially connected;
the lower part of the plasma gasification cracking furnace is provided with a rotary slag discharging machine;
the rotary slag discharging machine comprises a multilayer disc structure fixedly arranged at the lower part of the plasma gasification cracking furnace, a rotating shaft rotatably arranged at the center of the multilayer disc structure and a rake rod fixedly arranged on the rotating shaft; multilayer disc structure includes from last first disc and the second disc of to concentric crisscross setting down, the diameter of first disc is greater than the diameter of second disc, the feed opening has been seted up to one side that first disc is close to the rotation axis, all be provided with a rake lever between first disc and the second disc, the rake lever that is located first disc top has forward harrow leaf, and the rake lever that is located the second disc top has reverse harrow leaf.
2. The system of claim 1, wherein the outlet ends of the cyclones are connected to an air preheater and a plasma gasification cracking furnace, respectively.
3. The system of claim 1, wherein the outlet end of the air preheater is connected to the secondary combustion chamber, the plasma gasification cracking furnace and the spray cooling tower respectively.
4. The system of claim 1, wherein at least 2 SNCR lances are provided within the cyclone.
5. The system of claim 1, wherein the spray cooling tower comprises a quenching tower and an alkali liquor spray device, the quenching tower is respectively connected with the air preheater and the cylindrical dust remover, the alkali liquor spray device comprises an alkali liquor tank, a spray pump and an alkali liquor spray gun which are sequentially connected, and the alkali liquor spray gun is arranged in the quenching tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922148711.4U CN211413145U (en) | 2019-12-04 | 2019-12-04 | Waste paint bucket plasma resource recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922148711.4U CN211413145U (en) | 2019-12-04 | 2019-12-04 | Waste paint bucket plasma resource recovery system |
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| Publication Number | Publication Date |
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| CN211413145U true CN211413145U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922148711.4U Expired - Fee Related CN211413145U (en) | 2019-12-04 | 2019-12-04 | Waste paint bucket plasma resource recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308996A (en) * | 2022-01-10 | 2022-04-12 | 大连市环境保护有限公司产业废弃物处理厂 | Waste paint bucket recycling treatment process |
-
2019
- 2019-12-04 CN CN201922148711.4U patent/CN211413145U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308996A (en) * | 2022-01-10 | 2022-04-12 | 大连市环境保护有限公司产业废弃物处理厂 | Waste paint bucket recycling treatment process |
| CN114308996B (en) * | 2022-01-10 | 2023-03-14 | 大连市环境保护有限公司产业废弃物处理厂 | Waste paint bucket recycling treatment process |
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