CN213480243U - Waste residue and waste liquid treatment equipment - Google Patents
Waste residue and waste liquid treatment equipment Download PDFInfo
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- CN213480243U CN213480243U CN202021637112.5U CN202021637112U CN213480243U CN 213480243 U CN213480243 U CN 213480243U CN 202021637112 U CN202021637112 U CN 202021637112U CN 213480243 U CN213480243 U CN 213480243U
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Abstract
The utility model discloses a waste residue and liquid waste treatment device, which comprises a pyrolysis system and a tail gas purification system, wherein the pyrolysis system adopts the design of a pyrolysis furnace and an incinerator to ensure the complete pyrolysis of the waste residue and liquid waste and achieve the effect of complete combustion; and the tail gas purification of a urea solution supply device is arranged at the flue gas outlet of the incinerator, so that SNCR denitration treatment is realized; the tail gas purification system is arranged through the spray quenching tower, and because the cooling solution is fed into the spray quenching tower through an atomizing nozzle at the top of the spray quenching tower, when the flue gas rises and passes through an atomized fog drop area, the heat in the flue gas is uniformly and fully absorbed by the fog drops, and the fog drops can be quickly evaporated, so that the alkali liquor is prevented from being adhered to the wall and corroded, and the bottom of the spray quenching tower cannot generate sewage; the tail gas purification system adopts alkali liquor spraying to directly contact with the flue gas through the arrangement of the spraying absorption tower, so that acidic substances and toxic and harmful substances in the flue gas can be effectively and completely removed, and the standard emission of the flue gas is ensured.
Description
Technical Field
The utility model belongs to the technical field of waste residue, waste liquid treatment, especially, relate to a waste residue, waste liquid treatment equipment.
Background
China is a new country with high-speed development, and the proportion of resource consumption and pollutant emission in the world is increasing. The development of resource-saving and environment-friendly economy becomes the main direction of future national economy development, and low-carbon economy becomes the mainstream mode of future economic development of China.
In the industrial production process, a large amount of waste water, waste gas and waste residues are generated, most of the waste water, the waste gas and the waste residues are treated by a chemical detoxification method and a biological degradation method, most of the treatment methods are actually a concentration technology, and the toxicity of the concentrated solid, semi-solid, sludge or liquid is increased or decreased. The traditional methods of landfill, surface pond and waste stacking are used as final disposal, which causes accidents such as serious water pollution and the like. Thus, incineration disposal has many irreplaceable advantages. When the waste liquid is incinerated, the waste liquid is atomized, mixed with air and introduced into an incineration chamber for high-temperature incineration. And (3) introducing the smoke generated after incineration into a waste heat boiler for heat recovery after sedimentation treatment, and finally purifying the smoke subjected to heat recovery and discharging the smoke into the atmosphere. Although the number of incineration facilities is rapidly increasing, the problems of energy-saving management, pollutant emission management and safety management of incineration treatment are increasingly highlighted. However, the main problems to be studied and solved are: how to ensure the effect of nontoxic, smokeless, harmless and odorless emission of the smoke.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a waste residue, waste liquid treatment equipment can guarantee that waste residue, waste liquid pyrolysis are complete, ensures that the flue gas reaches the effect of nontoxic, smokeless, harmless, odorless emission.
In order to achieve the purpose, the utility model provides a waste residue and liquid treatment device, which comprises a feeding system, a pyrolysis system, an air supply system, a tail gas purification system and an exhaust system,
the feeding system comprises a waste liquid conveying device capable of conveying waste liquid to the pyrolysis system, the waste liquid conveying device comprises a waste liquid tank and a first atomizing nozzle, the waste liquid tank is connected with a liquid channel of the first atomizing nozzle through a first conveying pump, and a gas channel of the first atomizing nozzle is connected with a compressed air storage tank;
the pyrolysis system comprises a pyrolysis furnace and an incinerator, the first atomizing nozzle is installed at a waste liquid inlet of the pyrolysis furnace, and a flue gas outlet of the pyrolysis furnace is connected with a flue gas inlet of the incinerator; the pyrolysis furnace is provided with a first furnace body and a first burner, the first burner is arranged on the first furnace body and is positioned on one side of a waste liquid inlet of the incinerator, and the first burner is externally connected with a fuel supply source; the incinerator is provided with a second furnace body and a second combustor, at least two baffles which are arranged in a staggered and spaced mode are arranged in the second furnace body, an S-shaped flow channel is formed among the baffles, the second combustor is installed on the second furnace body and located on one side of a smoke inlet of the incinerator, and the second combustor is externally connected with a fuel supply source; a urea solution supply device is arranged at a smoke outlet of the incinerator;
the air supply system comprises an air supply machine which can supplement oxygen for the combustion of the pyrolysis furnace and the incinerator when the pyrolysis furnace and the incinerator work;
the tail gas purification system comprises a spray quench tower, a spray absorption tower, a fog-water separator, a cooling tank, a sedimentation tank, a mixing tank and a clarification tank, wherein a flue gas inlet of the spray quench tower is connected with a flue gas outlet of the incinerator, a flue gas outlet of the spray quench tower is connected with a flue gas inlet of the spray absorption tower, a flue gas outlet of the spray absorption tower is connected with a flue gas inlet of the fog-water separator, and a flue gas outlet of the fog-water separator is connected with the exhaust system; the upper part of the sedimentation tank, the upper part of the mixing tank and the upper part of the clarification tank are communicated in sequence; the top of the spray quenching tower is provided with a plurality of second atomizing nozzles, the cooling pool is connected with the liquid channels of the second atomizing nozzles through a second delivery pump, and the gas channels of the second atomizing nozzles are connected with the compressed air storage tank; the flue gas inlet of the spray quenching tower is arranged at the bottom of the spray quenching tower; the top of the spray absorption tower is provided with a plurality of spray headers, and the clarification tank is connected with the spray headers through a third delivery pump; the flue gas inlet of the spray absorption tower is arranged at the bottom of the spray absorption tower; the sedimentation tank is connected with a liquid outlet at the bottom of the spray absorption tower;
the exhaust system comprises an exhaust fan and a chimney, wherein the exhaust fan can provide negative pressure traction for smoke in the pyrolysis system and the tail gas purification system, and the chimney is connected with the exhaust fan.
As the utility model discloses preferred scheme, urea solution feeding device includes urea solution configuration case and third atomizing nozzle, the third atomizing nozzle is installed burn on the pipeline of burning furnace's exhanst gas outlet department, urea solution configuration case pass through the fourth delivery pump with the liquid passage of third atomizing nozzle connects, the gas passage of third atomizing nozzle with compressed air storage tank connects.
As the utility model discloses preferred scheme, waste residue, waste liquid treatment equipment still include dry powder injection apparatus and dry-type dust filter, dry powder injection apparatus with the dry-type dust filter connects gradually spray the exhanst gas outlet of quench tower with spray the connecting line between the flue gas import of absorption tower.
As a preferred scheme of the present invention, the dry powder spraying device comprises an activated carbon powder storage tank, a calcium oxide powder storage tank, a roots high pressure blower and a venturi reactor, the dry dust filtering device comprises a bag-type dust collector, a flue gas outlet of the spray quench tower is connected with a flue gas inlet of the venturi reactor, a flue gas outlet of the venturi reactor is connected with a flue gas inlet of the bag-type dust collector, and a flue gas outlet of the bag-type dust collector is connected with a flue gas inlet of the spray absorption tower; the activated carbon powder in the activated carbon powder storage tank and the calcium oxide powder in the calcium oxide powder storage tank are sprayed into the Venturi reactor through the Roots high-pressure fan; and a first valve is arranged at one side close to the flue gas inlet of the Venturi reactor.
As a preferred scheme of the present invention, the waste residue and liquid waste treatment equipment further comprises a control system, wherein the control system comprises a PLC central controller, a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor, a fifth temperature sensor and a negative pressure sensor;
the first temperature sensor is arranged on the pyrolysis furnace, the first temperature sensor is electrically connected with a first input end of the PLC central controller, and the first combustor is electrically connected with a first output end of the PLC central controller;
the second temperature sensor is arranged on the incinerator and is electrically connected with a second input end of the PLC central controller, and the second combustor is electrically connected with a second output end of the PLC central controller;
the third temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray quenching tower and a flue gas inlet of the venturi reactor, the third temperature sensor is electrically connected with a third input end of the PLC central controller, and the first valve is electrically connected with a third output end of the PLC central controller;
the fourth temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray quenching tower and a flue gas inlet of the venturi reactor, the fourth temperature sensor is electrically connected with a fourth input end of the PLC central controller, and the second delivery pump is electrically connected with a fourth output end of the PLC central controller;
the fifth temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray absorption tower and a flue gas inlet of the fog-water separator, the fifth temperature sensor is electrically connected with a fifth input end of the PLC central controller, and the third delivery pump is electrically connected with a fifth output end of the PLC central controller;
the negative pressure sensor is installed on the incinerator and electrically connected with a sixth input end of the PLC central controller, and the exhaust fan is electrically connected with a sixth output end of the PLC central controller.
As the preferred proposal of the utility model, the bag-type dust collector is connected with the compressed air storage tank.
As the utility model discloses preferred scheme, first furnace body with all be equipped with on the second furnace body and sweep the nozzle, sweep the nozzle with the compressed air storage tank is connected.
As the preferred scheme of the utility model, the compressed air storage tank is connected with air compressor.
As the utility model discloses preferred scheme, be equipped with the pH value sensor who is arranged in detecting mixed pond solution pH valve on the mixed pond.
As the utility model discloses preferred scheme, spray quench tower's exhanst gas outlet with be connected with emergent bypass pipeline between spray absorption tower's the gas inlet, be equipped with the second valve on the emergent bypass pipeline.
Implement the utility model provides a pair of waste residue, waste liquid treatment equipment compares with prior art, and its beneficial effect lies in:
(1) the utility model discloses send into the pyrolysis oven with the waste liquid through first atomizing nozzle uniformly, the waste liquid after the atomizing can stir with the high-temperature gas in the pyrolysis oven violently and form the heating power vortex, make waste residue and waste liquid in the pyrolysis oven take place pyrolysis and oxidation reaction rapidly, and the heating power vortex is rotatory along the furnace body circumferencial direction with certain speed (like 2-3 meters per second), and do axial motion along the furnace body with certain speed (like 2-3 meters per second), prolonged the dwell time of heating power vortex in high temperature flame zone greatly, guarantee that waste residue and waste liquid pyrolysis in the pyrolysis oven are complete; the flue gas treated by the pyrolysis furnace enters the incinerator for secondary catalytic combustion under the traction of the exhaust fan, so that the effect of complete combustion is achieved.
(2) The utility model discloses an burn fume outlet department of burning furnace and set up urea solution feeding device, urea solution gets into the internal back of furnace, and the NH that urea thermal decomposition produced3Can be matched with NO in high-temperature flue gasxReaction and absorption, and generation of N2And H2O, thereby effectively reducing NO in the smokexAnd (4) realizing SNCR denitration treatment.
(3) The utility model can rapidly cool the flue gas sent out by the second heat exchanger to about 200 ℃ in a short time through the arrangement of the spray quench tower, thereby effectively inhibiting the regeneration of dioxin; meanwhile, as a cooling solution (cooling water or alkali liquor) is fed into the spray quenching tower through a second atomizing nozzle at the top of the spray quenching tower, the cooling solution is atomized into fine fog drops by the second atomizing nozzle, the atomized fog drops are acted by upward hot flue gas, a fog drop suspension high-density area is formed near the fog of the second atomizing nozzle, when the flue gas passes through the area, the heat in the flue gas is uniformly and fully absorbed by the fog drops, and the fog drops can be rapidly evaporated and fed into the spray absorption tower along with the flue gas, so that the alkali liquor is prevented from being adhered to the wall, the corrosion is prevented, and no sewage is generated at the bottom of the spray quenching tower; in addition, when the alkali liquor is used as the cooling solution, atomized alkali liquor fog drops can also be subjected to neutralization reaction with acidic substances in the flue gas, and the subsequent treatment efficiency of the tail gas is improved.
(4) The utility model discloses a setting of spraying the absorption tower adopts alkali lye to spray and flue gas direct contact, can get rid of the acidic material in the flue gas and poisonous and harmful substance completely effectively, ensures that the flue gas is discharge to reach standard.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a waste residue and waste liquid treatment device provided by the utility model.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the machine or element being 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 invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1, the waste residue and waste liquid treatment equipment of the preferred embodiment of the present invention includes a feeding system, a pyrolysis system, an air supply system, a tail gas purification system and an exhaust system.
The feeding system comprises a waste liquid conveying device capable of conveying waste liquid to the pyrolysis system, the waste liquid conveying device comprises a waste liquid tank 1 and a first atomizing nozzle 2, and the waste liquid tank 1 is connected with a first conveying pump 3The liquid channel of the first atomizing nozzle 2 is connected, and the gas channel of the first atomizing nozzle 2 is connected with a compressed air storage tank 4; the pyrolysis system comprises a pyrolysis furnace 5 and an incinerator 6, the first atomizing nozzle 2 is installed at a waste liquid inlet of the pyrolysis furnace 5, and a flue gas outlet of the pyrolysis furnace 5 is connected with a flue gas inlet of the incinerator 6; the pyrolysis furnace 5 is provided with a first furnace body and a first burner 7, the first burner 7 is arranged on the first furnace body and is positioned on one side of a waste liquid inlet of the incinerator 6, and the first burner 7 is externally connected with a fuel supply source 44; the incinerator 6 is provided with a second furnace body and a second combustor 8, the second combustor 8 is installed on the second furnace body and is positioned on one side of a flue gas inlet of the incinerator 6, and the second combustor 8 is externally connected with a fuel supply source 44; therefore, the waste liquid is uniformly fed into the pyrolysis furnace 5 through the first atomizing nozzle 2, the atomized waste liquid can be stirred with high-temperature gas in the pyrolysis furnace 5 to form a thermal vortex, waste residues and the waste liquid in the pyrolysis furnace 5 are subjected to pyrolysis and oxidation reaction rapidly, the thermal vortex rotates along the circumferential direction of the furnace body at a certain speed (such as 2-3 m/s) and moves axially along the furnace body at a certain speed (such as 2-3 m/s), the retention time of the waste liquid in a high-temperature flame zone is greatly prolonged, and the waste residues and the waste liquid in the pyrolysis furnace 5 are completely pyrolyzed; the flue gas treated by the pyrolysis furnace 5 enters the incinerator 6 for secondary catalytic combustion under the traction of the exhaust fan, so that the effect of complete combustion is achieved. Further, a urea solution supply device 24 is provided at the flue gas outlet of the incinerator 6. After the urea solution enters the furnace body, NH generated by thermal decomposition of urea3Can be matched with NO in high-temperature flue gasxReaction and absorption, and generation of N2And H2O, thereby effectively reducing NO in the smokexAnd (4) realizing SNCR denitration treatment.
It should also be noted that at least two baffles 9 arranged at intervals in a staggered manner are arranged in the second furnace body, and an S-shaped flow passage is formed between a plurality of baffles 9. After the flue gas enters the second furnace body, larger dust particles can settle down due to the action of gravity, in order to avoid the airflow vortex from bringing up the settled dust particles, a baffle plate 9 is additionally arranged to block the settled dust particles, the flue gas is discharged through an exhaust pipe, and the separated dust is discharged through a dust discharge port, so that the larger dust particles can be prevented from entering a subsequent system, and the dust removal efficiency is improved; meanwhile, the residence time of the flue gas in a high-temperature flame zone can be prolonged, and the effect of complete combustion is ensured.
The air supply system includes an air blower 10 capable of supplying oxygen for combustion of the pyrolysis furnace 5 and the incinerator 6 when they are operated.
The tail gas purification system comprises a spray quenching tower 11, a spray absorption tower 12, a fog-water separator 13, a cooling tank 14, a sedimentation tank 15, a mixing tank 16 and a clarification tank 17, wherein a flue gas inlet of the spray quenching tower 11 is connected with a flue gas outlet of the incinerator 6, a flue gas outlet of the spray quenching tower 11 is connected with a flue gas inlet of the spray absorption tower 12, a flue gas outlet of the spray absorption tower 12 is connected with a flue gas inlet of the fog-water separator 13, and a flue gas outlet of the fog-water separator 13 is connected with the exhaust system; the upper part of the sedimentation tank 15, the upper part of the mixing tank 16 and the upper part of the clarification tank 17 are communicated in sequence; the top of the spray quenching tower 11 is provided with a plurality of second atomizing nozzles 18, the cooling pool 14 is connected with the liquid channels of the second atomizing nozzles 18 through a second delivery pump 19, and the gas channels of the second atomizing nozzles 18 are connected with the compressed air storage tank 4; the flue gas inlet of the spray quenching tower 11 is arranged at the bottom of the spray quenching tower 11; the top of the spray absorption tower 12 is provided with a plurality of spray headers 20, and the clarification tank 17 is connected with the spray headers 20 through a third delivery pump 21; the flue gas inlet of the spray absorption tower 12 is arranged at the bottom of the spray absorption tower 12; the sedimentation tank 15 is connected with a liquid outlet at the bottom of the spray absorption tower 12. Therefore, the flue gas sent out by the second heat exchanger can be quickly cooled to about 200 ℃ in a short time by arranging the spray quenching tower 11, so that the regeneration of dioxin is effectively inhibited; meanwhile, by arranging the spray absorption tower 12, alkali liquor is sprayed to directly contact with the flue gas, so that acidic substances and toxic and harmful substances in the flue gas can be effectively and completely removed, and the standard emission of the flue gas is ensured.
It should be noted that, because the cooling solution (cooling water or alkali liquor) in the cooling tank 14 is fed into the spray quenching tower 11 through the second atomizing nozzle 18 at the top of the spray quenching tower 11, the cooling solution is atomized into fine mist drops by the second atomizing nozzle 18, the atomized mist drops are acted by the upward hot flue gas, a high-density region in which the mist drops are suspended is formed near the mist of the second atomizing nozzle 18, when the flue gas passes through the region, the heat in the flue gas is uniformly and sufficiently absorbed by the mist drops, and the mist drops can be rapidly evaporated and fed into the spray absorption tower 12 along with the flue gas, thereby preventing the alkali liquor from sticking to the wall and preventing corrosion, and no sewage is generated at the bottom of the spray quenching tower 11; in addition, when the alkali liquor is used as the cooling solution, atomized alkali liquor fog drops can also be subjected to neutralization reaction with acidic substances in the flue gas, and the subsequent treatment efficiency of the tail gas is improved.
The exhaust system comprises an exhaust fan 22 which can provide negative pressure traction for the flue gas in the pyrolysis system and the tail gas purification system, so that the whole system is ensured to be in a negative pressure state, and harmful gas is prevented from escaping; the exhaust system also comprises a chimney 23 which leads the treated smoke to be discharged at high altitude, and the chimney 23 is connected with the exhaust fan 22. In this embodiment, the exhaust fan 22 is preferably a variable frequency fan.
Exemplarily, the waste residue is artifical material loading or mechanical type material loading, and mechanical type loading attachment includes waste residue tipping bin and screw conveyer, the discharge gate of waste residue tipping bin with screw conveyer's feed inlet is connected, screw conveyer's feed inlet with the waste residue access connection of pyrolysis oven 5.
Illustratively, the urea solution supply device 24 includes a urea solution distribution tank 25 and a third atomizing nozzle 26, the third atomizing nozzle 26 is installed on a pipeline at the flue gas outlet of the incinerator 6, the urea solution distribution tank 25 is connected with a liquid passage of the third atomizing nozzle 26 through a fourth delivery pump 27, and a gas passage of the third atomizing nozzle 26 is connected with the compressed air storage tank 4. Therefore, the atomized urea solution can be better heated and decomposed, so that NH3With NOxThe reaction absorption is more sufficient, and the SNCR denitration efficiency is improved.
Illustratively, the waste slag and liquid treatment equipment further comprises a dry powder injection device and a dry dust filtering device, wherein the dry powder injection device and the dry dust filtering device are sequentially connected with a connecting pipeline between a flue gas outlet of the spray quenching tower 11 and a flue gas inlet of the spray absorption tower 12. Specifically, the dry powder injection device comprises an activated carbon powder storage tank 28, a calcium oxide powder storage tank 29, a roots high-pressure fan 30 and a venturi reactor 31, the dry dust filter device comprises a bag-type dust collector 32, a flue gas outlet of the spray quenching tower 11 is connected with a flue gas inlet of the venturi reactor 31, a flue gas outlet of the venturi reactor 31 is connected with a flue gas inlet of the bag-type dust collector 32, and a flue gas outlet of the bag-type dust collector 32 is connected with a flue gas inlet of the spray absorption tower 12; the activated carbon powder in the activated carbon powder storage tank 28 and the calcium oxide powder in the calcium oxide powder storage tank 29 are sprayed into the venturi reactor 31 through the Roots high-pressure fan 30; a first valve 33 is provided near the flue gas inlet side of the venturi reactor 31, which first valve 33 is preferably a pneumatic butterfly valve. Therefore, through the arrangement of the dry powder injection device and the dry dust filtering device, on one hand, the active carbon powder is injected into the venturi reactor 31, dioxin-like substances at low temperature (200 ℃) are very easy to be adsorbed by the active carbon, the active carbon powder is tangentially injected into the venturi reactor 31 and then mixed with flue gas in a flue to be preliminarily adsorbed, the flue gas mixed with the active carbon powder enters the bag-type dust remover 32, the active carbon powder is adsorbed to the surface of the filter bag, harmful substances are continuously adsorbed on the surface of the filter bag, and the removal rate of the dioxin-like substances is remarkably improved; in addition, the addition of activated carbon powder to the flue gas is also very effective in removing mercury from the flue gas. On the other hand, calcium oxide powder is sprayed into the venturi reactor 31, because a large amount of water is evaporated by the spray quench tower 11, the water vapor content in the flue gas entering the venturi reactor 31 is high, the calcium oxide powder (namely, quicklime) is directly sprayed, slaked lime is generated by the reaction of the water vapor in the flue gas and the quicklime and is mixed with acidic substances in the flue gas for primary neutralization and absorption reaction, the flue gas mixed with the calcium oxide powder enters the bag-type dust collector 32, the calcium oxide powder is adsorbed to the surface of the filter bag, and the neutralization reaction is continuously carried out on the surface of the filter bag and the trace acidic substances, so that the removal rate of the acidic gases is improved; meanwhile, the calcium oxide powder can also absorb a large amount of water vapor in the flue gas, so that the normal use of the filter bag is effectively ensured, and if necessary, a drying device can be additionally arranged before the flue gas enters the bag-type dust collector 32.
Illustratively, in order to make the system have a high automation level, realize full-automatic control on temperature, pressure and the like, and have no manual automatic adjustment and switching, the waste residue and liquid treatment equipment further comprises a control system, wherein the control system comprises a PLC central controller, a first temperature sensor 34, a second temperature sensor 35, a third temperature sensor 36, a fourth temperature sensor 37, a fifth temperature sensor 38 and a negative pressure sensor 39. The specific settings are as follows:
the first temperature sensor 34 is installed on the pyrolysis furnace 5, the first temperature sensor 34 is electrically connected with a first input end of the PLC central controller, and the first burner 7 is electrically connected with a first output end of the PLC central controller; thus, the first temperature sensor 34 is used to detect the temperature in the pyrolysis furnace 5, and the PLC central controller can control the fire power of the first burner 7 according to the temperature in the pyrolysis furnace 5, so that the temperature in the pyrolysis furnace 5 reaches a preset process temperature (e.g., 650 ℃ -850 ℃).
The second temperature sensor 35 is installed on the incinerator 6, the second temperature sensor 35 is electrically connected with a second input end of the PLC central controller, and the second burner 8 is electrically connected with a second output end of the PLC central controller; thus, the second temperature sensor 35 is used to detect the temperature in the incinerator 6, and the PLC central controller can control the fire power of the second burner 8 according to the temperature in the incinerator 6, so that the temperature in the incinerator 6 reaches the preset process temperature (for example, 900 ℃ to 1200 ℃, when the temperature is over 1100 ℃, the pyrolysis of the flue gas is more complete).
The third temperature sensor 36 is installed on a connecting pipeline between the flue gas outlet of the spray quenching tower 11 and the flue gas inlet of the venturi reactor 31, the third temperature sensor 36 is electrically connected with a third input end of the PLC central controller, and the first valve 33 is electrically connected with a third output end of the PLC central controller; therefore, the third temperature sensor 36 is used for detecting the temperature of the flue gas coming out of the spray quenching tower 11, and the PLC central controller can control the opening or closing of the first valve 33 according to the temperature of the flue gas coming out of the spray quenching tower 11, so as to prevent the filter bag from being damaged due to overhigh or overlow temperature of the flue gas entering the bag-type dust collector 32.
The fourth temperature sensor 37 is installed on a connecting pipeline between the flue gas outlet of the spray quenching tower 11 and the flue gas inlet of the venturi reactor 31, the fourth temperature sensor 37 is electrically connected with a fourth input end of the PLC central controller, and the second delivery pump 19 is electrically connected with a fourth output end of the PLC central controller; therefore, the fourth temperature sensor 37 is used for detecting the temperature of the flue gas coming out of the spray quenching tower 11, and the PLC central controller can control the output power of the second delivery pump 19 according to the temperature of the flue gas coming out of the spray quenching tower 11 so as to ensure that the temperature of the flue gas after quenching and cooling is about 200 ℃.
The fifth temperature sensor 38 is installed on a connecting pipeline between the flue gas outlet of the spray absorption tower 12 and the flue gas inlet of the mist-water separator 13, the fifth temperature sensor 38 is electrically connected with a fifth input end of the PLC central controller, and the third delivery pump 21 is electrically connected with a fifth output end of the PLC central controller; therefore, the fifth temperature sensor 38 is used for detecting the temperature of the flue gas coming out of the spray absorption tower 12, and the PLC central controller can control the output power of the third delivery pump 21 according to the temperature of the flue gas coming out of the spray absorption tower 12, so as to ensure that the temperature of the flue gas can meet the emission standard.
The negative pressure sensor 39 is installed on the incinerator 6, the negative pressure sensor 39 is electrically connected with a sixth input end of the PLC central controller, and the exhaust fan 22 is electrically connected with a sixth output end of the PLC central controller. Therefore, the negative pressure sensor 39 is used for detecting the negative pressure value in the incinerator 6, and the PLC central controller can control the output power of the exhaust fan 22 according to the negative pressure value in the incinerator 6 so as to ensure that the pyrolysis system and the tail gas purification system are always in a negative pressure state.
Illustratively, the bag-type dust collector 32 is connected to the compressed air storage tank 4. Therefore, the ash cleaning medium adopts compressed air, and high-pressure gas pulses in the compressed air storage tank 4 are used for blowing the filter bag to clean the accumulated ash on the filter bag.
Illustratively, the first furnace body and the second furnace body are both provided with purging nozzles, and the purging nozzles are connected with the compressed air storage tank 4. The structure can sweep residual gas and other flammable and explosive gases in the furnace body, and prevent explosion after ignition.
Illustratively, the compressed air storage tank 4 is connected with an air compressor 40, and the air compressor 40 can continuously supply compressed air to the compressed air storage tank 4, so as to ensure that the air pressure in the compressed air storage tank 4 is stable and the normal operation of the equipment is ensured.
Illustratively, an emergency bypass pipeline 41 is connected between the flue gas outlet of the spray quenching tower 11 and the flue gas inlet of the spray absorption tower 12, and a second valve 42 is arranged on the emergency bypass pipeline 41 and is used for ensuring that the first valve 33 is closed and the second valve 42 is opened when the cloth bag dust removal fails or is overhauled, so as to ensure the normal operation of the equipment; meanwhile, the waste gas can directly enter the spray absorption tower 12 for absorption without a dry powder spraying device and a dry dust filtering device, and can also be discharged after reaching the standard.
Illustratively, a pH sensor 43 for detecting the pH value of the solution in the mixing tank 16 is disposed on the mixing tank 16, so that the alkali solution solvent can be proportioned to the mixing tank 16 according to the pH value of the solution in the mixing tank 16.
Illustratively, the first burner 7 and the second burner 8 are each provided with a safety protection device. When the burner is not started normally, the safety protection device automatically cuts off the fuel supply source 44, stops the equipment and gives an alarm.
Illustratively, the second furnace body is provided with an emergency discharge port to prevent gas explosion and danger caused by the abnormal operation of the device.
Illustratively, the first atomizing nozzle 2, the second atomizing nozzle 18 and the third atomizing nozzle 26 each include an inner nozzle and an outer nozzle, the inner nozzle is sleeved in the outer nozzle, and an annular gap is formed between the inner nozzle and the outer nozzle; the hollow channel of the inner nozzle is a liquid channel, and the annular gap between the inner nozzle and the outer nozzle is a gas channel.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or 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 in specific cases to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. A waste residue and waste liquid treatment device is characterized by comprising a feeding system, a pyrolysis system, an air supply system, a tail gas purification system and an exhaust system,
the feeding system comprises a waste liquid conveying device capable of conveying waste liquid to the pyrolysis system, the waste liquid conveying device comprises a waste liquid tank and a first atomizing nozzle, the waste liquid tank is connected with a liquid channel of the first atomizing nozzle through a first conveying pump, and a gas channel of the first atomizing nozzle is connected with a compressed air storage tank;
the pyrolysis system comprises a pyrolysis furnace and an incinerator, the first atomizing nozzle is installed at a waste liquid inlet of the pyrolysis furnace, and a flue gas outlet of the pyrolysis furnace is connected with a flue gas inlet of the incinerator; the pyrolysis furnace is provided with a first furnace body and a first burner, the first burner is arranged on the first furnace body and is positioned on one side of a waste liquid inlet of the incinerator, and the first burner is externally connected with a fuel supply source; the incinerator is provided with a second furnace body and a second combustor, at least two baffles which are arranged in a staggered and spaced mode are arranged in the second furnace body, an S-shaped flow channel is formed among the baffles, the second combustor is installed on the second furnace body and located on one side of a smoke inlet of the incinerator, and the second combustor is externally connected with a fuel supply source; a urea solution supply device is arranged at a smoke outlet of the incinerator;
the air supply system comprises an air supply machine which can supplement oxygen for the combustion of the pyrolysis furnace and the incinerator when the pyrolysis furnace and the incinerator work;
the tail gas purification system comprises a spray quench tower, a spray absorption tower, a fog-water separator, a cooling tank, a sedimentation tank, a mixing tank and a clarification tank, wherein a flue gas inlet of the spray quench tower is connected with a flue gas outlet of the incinerator, a flue gas outlet of the spray quench tower is connected with a flue gas inlet of the spray absorption tower, a flue gas outlet of the spray absorption tower is connected with a flue gas inlet of the fog-water separator, and a flue gas outlet of the fog-water separator is connected with the exhaust system; the upper part of the sedimentation tank, the upper part of the mixing tank and the upper part of the clarification tank are communicated in sequence; the top of the spray quenching tower is provided with a plurality of second atomizing nozzles, the cooling pool is connected with the liquid channels of the second atomizing nozzles through a second delivery pump, and the gas channels of the second atomizing nozzles are connected with the compressed air storage tank; the flue gas inlet of the spray quenching tower is arranged at the bottom of the spray quenching tower; the top of the spray absorption tower is provided with a plurality of spray headers, and the clarification tank is connected with the spray headers through a third delivery pump; the flue gas inlet of the spray absorption tower is arranged at the bottom of the spray absorption tower; the sedimentation tank is connected with a liquid outlet at the bottom of the spray absorption tower;
the exhaust system comprises an exhaust fan and a chimney, wherein the exhaust fan can provide negative pressure traction for smoke in the pyrolysis system and the tail gas purification system, and the chimney is connected with the exhaust fan.
2. The apparatus of claim 1, wherein the urea solution supply device comprises a urea solution distribution tank and a third atomizing nozzle, the third atomizing nozzle is installed on a pipeline at the flue gas outlet of the incinerator, the urea solution distribution tank is connected with the liquid channel of the third atomizing nozzle through a fourth delivery pump, and the gas channel of the third atomizing nozzle is connected with the compressed air storage tank.
3. The waste residue and liquid treatment equipment according to claim 1, further comprising a dry powder injection device and a dry dust filtering device, wherein the dry powder injection device and the dry dust filtering device are sequentially connected to a connecting pipeline between the flue gas outlet of the spray quenching tower and the flue gas inlet of the spray absorption tower.
4. The apparatus as claimed in claim 3, wherein the dry powder spraying device comprises an activated carbon powder storage tank, a calcium oxide powder storage tank, a Roots high pressure blower and a Venturi reactor, the dry dust filtering device comprises a bag-type dust collector, a flue gas outlet of the spray quenching tower is connected with a flue gas inlet of the Venturi reactor, a flue gas outlet of the Venturi reactor is connected with a flue gas inlet of the bag-type dust collector, and a flue gas outlet of the bag-type dust collector is connected with a flue gas inlet of the spray absorption tower; the activated carbon powder in the activated carbon powder storage tank and the calcium oxide powder in the calcium oxide powder storage tank are sprayed into the Venturi reactor through the Roots high-pressure fan; and a first valve is arranged at one side close to the flue gas inlet of the Venturi reactor.
5. The waste residue and liquid treatment equipment according to claim 4, further comprising a control system, wherein the control system comprises a PLC central controller, a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor, a fifth temperature sensor and a negative pressure sensor;
the first temperature sensor is arranged on the pyrolysis furnace, the first temperature sensor is electrically connected with a first input end of the PLC central controller, and the first combustor is electrically connected with a first output end of the PLC central controller;
the second temperature sensor is arranged on the incinerator and is electrically connected with a second input end of the PLC central controller, and the second combustor is electrically connected with a second output end of the PLC central controller;
the third temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray quenching tower and a flue gas inlet of the venturi reactor, the third temperature sensor is electrically connected with a third input end of the PLC central controller, and the first valve is electrically connected with a third output end of the PLC central controller;
the fourth temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray quenching tower and a flue gas inlet of the venturi reactor, the fourth temperature sensor is electrically connected with a fourth input end of the PLC central controller, and the second delivery pump is electrically connected with a fourth output end of the PLC central controller;
the fifth temperature sensor is arranged on a connecting pipeline between a flue gas outlet of the spray absorption tower and a flue gas inlet of the fog-water separator, the fifth temperature sensor is electrically connected with a fifth input end of the PLC central controller, and the third delivery pump is electrically connected with a fifth output end of the PLC central controller;
the negative pressure sensor is installed on the incinerator and electrically connected with a sixth input end of the PLC central controller, and the exhaust fan is electrically connected with a sixth output end of the PLC central controller.
6. The waste residue and liquid treatment equipment according to claim 4, wherein the bag-type dust collector is connected with the compressed air storage tank.
7. The apparatus of claim 1, wherein the first furnace body and the second furnace body are provided with purging nozzles, and the purging nozzles are connected to the compressed air storage tank.
8. The apparatus of claim 1, wherein the compressed air storage tank is connected to an air compressor.
9. The apparatus of claim 1, wherein the mixing tank is provided with a pH sensor for detecting pH of the solution in the mixing tank.
10. The waste residue and liquid treatment equipment as claimed in claim 1, wherein an emergency bypass pipeline is connected between the flue gas outlet of the spray quenching tower and the flue gas inlet of the spray absorption tower, and a second valve is arranged on the emergency bypass pipeline.
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| CN202021637112.5U CN213480243U (en) | 2020-08-07 | 2020-08-07 | Waste residue and waste liquid treatment equipment |
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| CN202021637112.5U CN213480243U (en) | 2020-08-07 | 2020-08-07 | Waste residue and waste liquid treatment equipment |
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Address after: Room 101, No. 133-8 Yanling Road, Tianhe District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangdong Yicheng Environmental Protection Technology Co.,Ltd. Address before: 511520 No. 128, Tianan Zhigu Exhibition Service Center, No. 18, Chuangxing Avenue, science and Technology Innovation Park, Qingyuan high tech Zone, Qingyuan City, Guangdong Province Patentee before: Guangdong Yicheng Environmental Protection Technology Co.,Ltd. |