CN211290080U - Integral combustion device suitable for high-salinity organic wastewater incineration - Google Patents
Integral combustion device suitable for high-salinity organic wastewater incineration Download PDFInfo
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- CN211290080U CN211290080U CN201921944285.9U CN201921944285U CN211290080U CN 211290080 U CN211290080 U CN 211290080U CN 201921944285 U CN201921944285 U CN 201921944285U CN 211290080 U CN211290080 U CN 211290080U
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Abstract
The utility model discloses a combustion device, which comprises a shell, a first air inlet component, a second air inlet component and a waste water spray gun; the shell comprises an air box front plate, an air box back plate, an air box partition plate, an air box side plate, a central cylinder, a spray gun fixing pipe I, a cyclone, an inner throat fixing plate, an inner ring throat straight section, an inner throat flaring section and an outer throat; an air inlet is arranged on the side plate of the air box and is divided into two air inlet channels; the central cylinder is vertical to the air box partition plate, and the spray gun fixing pipe I is arranged in the central cylinder and is coaxial with the central cylinder; the swirler is sleeved on the spray gun fixing pipe I; one air inlet assembly comprises a spray gun fixing pipe II, a sleeve, an inner ring gun, an outer ring gun and a panel, and a spray gun rod of the waste water spray gun penetrates through the spray gun fixing pipe II and the spray gun fixing pipe I. The combustion device is an integral combustion device suitable for burning high-salinity organic wastewater, and has the advantages of compact structure, good wastewater atomization effect, stable ignition and combustion and high combustion efficiency.
Description
Technical Field
The utility model relates to an incineration disposal technology especially relates to a waste water burns device.
Background
The treatment of waste water containing organic substances and high-concentration salt (hereinafter referred to as high-salt waste water) generated in the chemical industry is a big problem in the field of environmental protection treatment. These wastewaters usually contain not only a variety of organic substances (or combustibles) such as acids, aldehydes, alcohols, olefins, etc., but also a large amount of Na+、K+、Ca2+、Cl-、F-、SO2- 4And the like. The high-salt organic wastewater is directly discharged, and can seriously pollute the environment. High-salinity wastewater generally inhibits the growth of biological bacteria, so that the degradation treatment effect of the existing biochemical treatment technology for the wastewater is poor. The process of treating high-salinity wastewater by a physical and chemical method is complex and the treatment cost is very high. The atomization burning method is to atomize the high-salt waste water and spray the atomized waste water into a high-temperature burning device, and the atomized liquid drops absorb the heat in the furnace to ensure that the high-salt waste water is large in sizeThe water content is evaporated and vaporized, then the combustible substances (elements such as C, H, O, S) in the liquid drops reach higher temperature, the processes of ignition, combustion and burnout of organic matters are completed, the combustible substances finally generate harmless substances such as carbon dioxide, water and the like and a small amount of gases such as sulfur dioxide and the like, the COD removal rate of the wastewater can reach more than 99%, and finally, the residual non-combustible salt becomes ash at high temperature. The waste water incineration treatment technology is a simple and efficient waste water treatment technology with strong adaptability to the property of waste water, is easy to realize industrialization, and is more suitable for treating chemical waste water, papermaking black liquor, petroleum waste water and the like containing organic matters and high-concentration salt.
The atomization incineration treatment technology can also thoroughly decompose toxic and harmful hazardous substances (such as cyanogen substances, polychlorinated biphenyl and the like) contained in the wastewater in a high-temperature environment, and provides a feasible treatment method for the treatment of the wastewater and the meeting of the environmental-friendly emission requirements.
The research for incinerating organic wastewater from abroad starts early, the technology is relatively mature, and the fluidized bed incineration technology is particularly prominent. The circulating fluidized bed incinerator developed by CA company in America increases air inlet position, increases air speed and increases turbulence, so that waste water is fully combusted in a combustion zone, the incinerator temperature is 800-. The American Mneasha company uses fuel oil as auxiliary fuel to burn the paper-making black night in a fluidized bed incinerator, the incinerator temperature is 732 ℃, and the daily treatment capacity of each incinerator reaches 125 t.
The incineration technology of high-salt chemical wastewater is also applied to more industries in China, and is different from the fluidized bed incineration technology adopted by mountains and the like to carry out incineration treatment on high-concentration salt-containing wastewater generated by nylon 66 salt factories, wherein the wastewater mainly contains organic matters such as adipic acid, hexamethylene diamine and the like and also contains about 1% of NaOH. The waste water enters the furnace from the dense-phase zone for incineration, under the condition of adding the additive, the dense-phase zone is fluidized normally, the coking and slagging phenomena are not generated, and the bed temperature is 850-900 ℃. The university of Zhejiang is a waste water incinerator designed for a phenolic aldehyde plastic factory in Jiaxing Pinghu, and the university of southeast is a waste water incinerator designed for a Nantong acetic acid chemical plant and a chemical plant in Dalian. However, the high-salt waste water incineration technology has obvious defects, and the main problems of incomplete combustion system design, such as poor atomization effect, difficult waste water ignition, low combustion efficiency, more combustible residues in ash content, blockage of an atomization nozzle, slag bonding, blockage, corrosion and the like in an incinerator, and the like, are that an incinerator has to be shut down for maintenance or a hearth needs to be cleaned regularly.
At present, waste water incineration is exemplified by feeding waste water and auxiliary fuel (such as natural gas, oil, coal, etc.) into a furnace, respectively, first, igniting and burning the auxiliary fuel to form a high temperature environment, and then injecting the waste water to evaporate, ignite and burn the waste water in the high temperature environment. The waste water and the auxiliary fuel are arranged at different positions of the incineration system and are not arranged in the same structure, a distance is reserved between the positions where the waste water and the auxiliary fuel are sprayed into the hearth, combustion areas which are relatively independent of each other are formed, and direct connection and interaction between the waste water combustion process and the auxiliary fuel and the waste water burnout process are lacked. Therefore, the existing waste water incineration technology has the disadvantages that auxiliary fuel and heat released by waste water combustion are not fully utilized, the water evaporation time of the waste water is long, the fire is difficult, the combustion effect is poor, the burnout time is long, and the size of the incinerator is also large.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists among the above-mentioned prior art, the utility model provides a can reach good atomizing state to can the continuous operation under the great (500) condition of waste water flow (5000 kg/h), guarantee that the blowout liquid drop catches fire and fully burns in the flame parcel, can play the integral burner that suitable high salinity organic waste water that good combustion effect burns.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an integral combustion device suitable for incinerating high-salinity organic wastewater comprises a shell, a first air inlet assembly, a second air inlet assembly and a wastewater spray gun;
the shell comprises an air box front plate, an air box back plate, an air box partition plate, an air box side plate, a central cylinder, a spray gun fixing pipe I, a cyclone, an inner throat fixing plate, an inner ring throat straight section, an inner throat flaring section and an outer throat; the front plate of the air box, the back plate of the air box and the partition plate of the air box are all provided with inner circular holes; the air box front plate is fixedly arranged at one end of the air box side plate, the air box back plate is arranged at the other end of the air box side plate, and the air box partition plate is arranged in the air box side plate and is positioned between the air box front plate and the air box back plate; the air box side plate is provided with an air inlet, the air inlet of the air box side plate is provided with an air inlet flange, and the air inlet is divided into two air inlet channels by an air box dividing plate; the spray gun fixing pipe I is arranged in the central cylinder and is coaxial with the central cylinder; the swirler is sleeved on the spray gun fixing pipe I and is close to the other end of the central cylinder; the middle part of the inner roar fixing plate is provided with a hole and is sleeved on the central cylinder, and the inner roar fixing plate is positioned on the outer side of the air box back plate; the inner ring throat straight section is sleeved outside the central cylinder, one end of the inner ring throat straight section is fixed on the inner throat fixing plate, the end with the small diameter of the inner throat flaring section is fixedly connected with the other end of the inner ring throat straight section, and the inner ring throat straight section, the inner throat flaring section and the central cylinder are coaxially arranged; the outer throat is arranged outside the inner throat flaring section and the inner ring throat straight section, one end of the outer throat is fixedly connected to the air box back plate, and the outer throat and the central cylinder are coaxially arranged;
the air inlet assembly I comprises a spray gun fixing pipe II, a sleeve, an inner ring gun, an outer ring gun and a panel; the sleeve is sleeved outside the spray gun fixing pipe II, sealing plates are arranged between two ends of the sleeve and the outer wall of the spray gun fixing pipe II, and a main air inlet channel is formed between the sleeve and the spray gun fixing pipe II; a plurality of inner ring guns are uniformly distributed on the outer side of one end of the sleeve, and one end of each inner ring gun penetrates through the main air inlet channel; a plurality of outer ring guns are uniformly distributed on the outer side of one end of the sleeve and positioned on the outer side of the inner ring guns, and one end of each outer ring gun penetrates through the sleeve and is communicated with the inside of the main air inlet channel; the other end of the inner ring gun and the other end of the outer ring gun are coaxially arranged with the spray gun fixing pipe II; the panel is provided with a through hole, the panel is sleeved outside the sleeve through the through hole on the panel and is fixed with the sleeve, and the panel is fixedly connected with the outer side face of the front plate of the air box; the outer ring gun penetrates through the air box partition plate, and the end part of the other end of the outer ring gun is positioned between the inner throat opening flaring section and the outer throat opening; the other end of the inner ring gun is arranged between the spray gun fixing pipe I and the central cylinder, and the end part of the other end of the inner ring gun penetrates out from the position between the outer side of the cyclone and the inner wall of the central cylinder;
a spray gun rod of the waste water spray gun penetrates through a spray gun fixing pipe II and a spray gun fixing pipe I, and an atomizing nozzle on the waste water spray gun extends out of the spray gun fixing pipe I;
the sleeve is provided with a main air inlet pipe which is communicated with the main air inlet channel;
the air inlet assembly II comprises an auxiliary air inlet pipe, and the auxiliary air inlet pipe is communicated with one port of the inner ring gun;
and a cooling air pipe is arranged on the outer wall of the spray gun fixing pipe II and close to the other end of the spray gun fixing pipe II, and the cooling air pipe is communicated with the interior of the spray gun fixing pipe II.
As a preferred scheme of the utility model, admit air subassembly two and still include outer tube, apron and assist the intake pipe flange, the outer tube sets up on the fixed pipe II of spray gun, the one end of outer tube and the sealing plate connection of keeping away from the outer lane rifle, the apron is fixed on the other end of outer tube and the cover is fixed on the fixed pipe II of spray gun and is cooperated with the outer wall seal of the fixed pipe II of spray gun, assist the intake pipe setting on the outer tube, it communicates with each other in auxiliary intake pipe and the outer tube, the one end of inner circle rifle is passed the closing plate and is communicated with each other with in the outer tube.
As another preferred scheme of the utility model, outer ring gun supports which are equal in number and correspond to the outer ring guns one by one are uniformly distributed on the outer wall of the inner throat flaring section, and the outer ends of the outer ring guns are fixed on the outer ring gun supports; the other end of the central cylinder is provided with a circular ring-shaped swirler baffle close to the inner wall, inner ring gun fixing holes which are equal to the number of the inner ring guns and correspond to the inner ring guns one by one are uniformly distributed on the swirler baffle, and the outer ends of the inner ring guns penetrate through the corresponding inner ring gun fixing holes; the first air inlet assembly further comprises an inner ring gun head and an outer ring gun head; the outer end of each inner ring gun is provided with an inner ring gun head, the outer end of each outer ring gun is provided with an outer ring gun head, and the wall, close to the outer side, of each inner ring gun head and the wall, close to the outer side, of each outer ring gun head are provided with a plurality of air injection holes.
As the utility model discloses a still another preferred scheme, the fixed waste water spray gun mounting flange that sets up on the fixed pipe II of spray gun, set up spray gun flange on the spray gun pole of waste water spray gun, spray gun flange and waste water spray gun mounting flange are connected, set up main intake pipe flange on the outer port of main intake pipe.
As an improved scheme of the utility model, a pressure regulating valve is arranged on a main gas inlet pipe which is connected with a flange of the main gas inlet pipe; a pressure regulating valve is arranged on an auxiliary gas inlet pipe which is connected with the auxiliary gas inlet pipe through a flange; a pressure regulating valve is arranged on the air pipe connected with the cooling air pipe; and air pipes connected with the two air inlet channels of the air inlet flange are respectively provided with a pressure regulating valve.
Compared with the prior art, to the waste water that contains high concentration salinity and combustible substance, the technical effect of the utility model is as follows:
1. the combustion device can ensure that moisture is heated, evaporated and vaporized in flame, and organic matters are combusted to generate carbon dioxide, water and other harmless substances, and meanwhile, salt is solidified into ash under the action of high temperature. Under the high-temperature combustion environment of more than 1000 ℃, the generation of toxic pollutants such as dioxin and the like can be effectively inhibited, and the influence of the waste water on the environment can be greatly reduced.
2. The combustion device simultaneously sends three substances of natural gas, air and waste water into the furnace, reasonably organizes the flowing and combustion processes, and realizes the integration of waste water atomization combustion and natural gas combustion. Under the appropriate swirl strength, the swirling air has two positive effects on waste water combustion: on one hand, the swirling air sucks high-temperature flue gas generated by burning remote wastewater and natural gas to a wastewater nozzle, and provides enough evaporation heat and ignition heat for wastewater moisture evaporation and ignition; on the other hand, the swirling air not only outward curls the atomized liquid drops to enable the atomized liquid drops to be fully mixed with the swirling air in time, but also entrains high-temperature flame of outside natural gas combustion. Therefore, the swirling air enables the atomized liquid drops, the far high-temperature flue gas and the outside natural gas flame to be fully mixed near the outlet of the combustion device, heat exchange and mass exchange are completed, the atomized liquid drops are enabled to be timely evaporated, ignited and combusted, the full combustion of the waste water is realized, and the heat of the high-temperature flue gas generated by the combustion of the natural gas and the waste water is fully utilized.
3. The combustion device has compact structure and convenient disassembly. The waste water atomizer is located at the most middle position and is fixed by the inlet flange and the outlet cyclone, and can be detached and replaced when necessary. The natural gas and the air respectively adopt two channel paths, and 4 flow regulating valves are installed, and can be controlled and regulated according to corresponding combustion conditions.
4. The waste water combustion device has large waste water treatment capacity, can meet the requirements of effective atomization and efficient combustion of large-flow (500 plus 5000kg/h) waste water, ensures the waste water channel to have larger size, and avoids the problem of blockage of the atomization device.
Drawings
FIG. 1 is a schematic diagram I of the structure of an integrated combustion device suitable for incinerating high-salinity organic wastewater;
FIG. 2 is a schematic structural diagram II of an integral combustion device suitable for incinerating high-salinity organic wastewater;
FIG. 3 is a front view of the housing;
FIG. 4 is a rear view of the housing;
FIG. 5 is a cross-sectional view taken along A-A of FIG. 3;
FIG. 6 is a cut-away perspective view of the housing;
FIG. 7 is a front view of the first intake assembly;
FIG. 8 is a rear view of the first intake assembly;
FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;
FIG. 10 is a schematic view of the structure of the waste water spray gun in cooperation with the spray gun fixing pipe;
FIG. 11 is a cross-sectional view of an atomizing nozzle;
fig. 12 is a cross-sectional view taken along the direction C-C in fig. 11.
In the drawings, 1 — a housing; 2-air box front plate; 3-bellows back plate; 4-air box partition plate; 5, an air box side plate; 6-central cylinder; 7-a spray gun fixing pipe I; 8, a swirler; 9-inner roar fixed plate; 10-inner ring throat straight section; 11-internal laryngeal opening flaring segment; 12-external laryngeal opening; 13-air intake flange; 14-a spray gun fixing pipe II; 15-a sleeve; 16-an inner ring gun; 17-an outer ring gun; 18-a panel; 19-main inlet pipe; 20-auxiliary air inlet pipe; 21-cooling air pipe; 22-outer tube; 23-cover plate; 24-auxiliary intake pipe flange; 25-outer ring gun support; 26-swirler baffle; 27-inner ring gun heads; 28-outer ring gun head; 29-gas injection holes; 30-a waste water spray gun fixing flange; 31-main intake pipe flange; 32-boiler connecting flange; 33-a heat insulating shield; 34-a waste water spray gun; 35-atomizing nozzle; 36-lance attachment flange; 37-nozzle outer tube; 38-nozzle inner tube; 39-annular partition plate; 40, an air inlet pipe; 41-liquid inlet pipe; 42-gas jet hole; 43 — liquid ejection orifice; 44-gas-liquid mixing spray hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-10, an integrated combustion device suitable for incinerating high-salinity organic wastewater comprises a shell 1, a first air inlet assembly, a second air inlet assembly and a wastewater spray gun 34.
The structure of the casing is shown in fig. 3-6, and the casing 1 comprises a bellows front plate 2, a bellows back plate 3, a bellows partition plate 4, a bellows side plate 5, a central cylinder 6, a spray gun fixing pipe I7, a swirler 8, an inner throat fixing plate 9, an inner ring throat straight section 10, an inner throat expansion section 11 and an outer throat 12. The front air box plate 2, the back air box plate 3 and the partition plate 4 are all provided with inner circular holes, and the inner circular holes of the partition plate 4 are smaller than the inner circular holes of the front air box plate 2 and the back air box plate 3. The front bellows plate 2 is fixedly arranged at one end of the side bellows plate 5, the back bellows plate 3 is arranged at the other end of the side bellows plate 5, and the dividing bellows plate 4 is arranged in the side bellows plate 5 and is positioned between the front bellows plate 2 and the back bellows plate 3. An air inlet is arranged on the air box side plate 5, an air inlet flange 13 is arranged on the air inlet of the air box side plate 5, and the air inlet is divided into two air inlet channels through an air box dividing plate 4. A central cylinder 6 is perpendicular to the air box partition plate 4, one end of the central cylinder 6 is fixedly connected with the inner circle side of the air box partition plate 4, the other end of the central cylinder 6 extends out of the air box back plate 3, and a spray gun fixing pipe I7 is arranged in the central cylinder 6 and is coaxial with the central cylinder 6. The swirler 8 is sleeved on the spray gun fixing pipe I7, and the swirler 8 is close to the other end of the central barrel 6. The middle of the inner roar fixing plate 9 is provided with a hole and is sleeved on the central cylinder 6, the inner roar fixing plate 9 is positioned on the outer side of the bellows back plate 3, the inner roar fixing plate 9 is a circular plate, and the diameter of the outer circle of the inner roar fixing plate 9 is smaller than that of the inner circular hole of the bellows back plate 3; the inner ring throat straight section 10 is sleeved outside the central cylinder 6, one end of the inner ring throat straight section 10 is fixed on the inner throat fixing plate 9, the end with the small diameter of the inner throat flaring section 11 is fixedly connected with the other end of the inner ring throat straight section 10, and the inner ring throat straight section 10, the inner throat flaring section 11 and the central cylinder 6 are coaxially arranged. The outer throat 12 is arranged outside the inner throat flaring section 11 and the inner ring throat straight section 10, one end of the outer throat 12 is fixedly connected to the air box back plate 3, and the outer throat 12 and the central cylinder 6 are coaxially arranged.
The first air inlet assembly is structurally shown in figures 7-9 and comprises a spray gun fixing pipe II 14, a sleeve 15, an inner ring gun 16, an outer ring gun 17 and a panel 18. The sleeve pipe 15 is sleeved outside the spray gun fixing pipe II 14, sealing plates are arranged between the two ends of the sleeve pipe 15 and the outer wall of the spray gun fixing pipe II 14, and a main air inlet channel is formed between the sleeve pipe 15 and the spray gun fixing pipe II 14. A plurality of inner ring guns 16 are uniformly distributed on the outer side of one end of the sleeve 15, one end of each inner ring gun 16 penetrates through the main air inlet channel, and in the embodiment, the number of the inner ring guns 16 is six. A plurality of outer ring guns 17 are uniformly arranged on the outer side of one end of the sleeve 15 and on the outer side of the inner ring guns 16, one end of each outer ring gun 17 penetrates through the sleeve 15 and is communicated with the interior of the main air inlet channel, and twelve outer ring guns 17 are arranged in the embodiment. The other end of the inner ring gun 16 and the other end of the outer ring gun 17 are coaxially arranged with the spray gun fixing pipe II 14; the panel 18 is provided with a through hole, the panel 18 is sleeved outside the sleeve 15 through the through hole on the panel and is fixed with the sleeve 15, and the panel 18 is fixedly connected with the outer side face of the front plate 2 of the air box. The outer ring gun 17 penetrates through the air box partition plate 4, and the end part of the other end of the outer ring gun 17 is positioned between the inner throat opening expanding section 11 and the outer throat opening 12; the other end of the inner ring gun 16 is arranged between the spray gun fixing pipe I7 and the central cylinder 6, and the end part of the other end of the inner ring gun 16 penetrates out from the position between the outer side of the cyclone 8 and the inner wall of the central cylinder 6. As can be seen from fig. 9, each inner ring gun 16 is composed of an inner ring gun straight pipe section i, an inner ring gun bent pipe section ii and an inner ring gun straight pipe section iii, the inner ring gun straight pipe section iii passes through the main air inlet channel, the inner ring gun straight pipe section i penetrates out from between the outer side of the swirler 8 and the inner wall of the central cylinder 6, the inner ring gun straight pipe section i and the inner ring gun straight pipe section iii are connected through the inner ring gun bent pipe section ii, and the six inner ring gun straight pipe sections i are outwardly opened relative to the six inner ring gun straight pipe sections iii to form a gripper; every outer lane rifle 17 comprises outer lane rifle straight tube section I and outer lane rifle bending tube section II, and the one end of outer lane rifle bending tube section II is connected with the one end of outer lane rifle straight tube section I, and outer lane rifle straight tube section I passes bellows division board 4, and another tip of outer lane rifle straight tube section I is located between interior throat mouth flaring section 11 and outer throat 12, and the other end of outer lane rifle bending tube section II is connected on sleeve pipe 15.
The spray gun rod of the waste water spray gun 34 penetrates through the spray gun fixing pipe II 14 and the spray gun fixing pipe I7, the atomizing nozzle 35 on the waste water spray gun 34 extends out of the spray gun fixing pipe I7, and fig. 10 is a schematic structural view of the waste water spray gun 34 penetrating through the spray gun fixing pipe II 14. And a waste water spray gun fixing flange 30 is fixedly arranged at the other end of the spray gun fixing pipe II 14, a spray gun connecting flange 36 is arranged on a spray gun rod of the waste water spray gun 34, and the spray gun connecting flange 36 is connected with the waste water spray gun fixing flange 30. The atomizing nozzle 35 includes an outer nozzle tube 37, an inner nozzle tube 38, and an annular partition 39, as shown in fig. 11 and 12, one end of the outer nozzle tube 37 communicates with an inlet tube 40 of the waste water spray gun 34, one end of the inner nozzle tube 38 communicates with an inlet tube 41 of the waste water spray gun 34, the other end of the outer nozzle tube 37 is narrowed and closed, the other end of the inner nozzle tube 38 is narrowed and closed, and the annular partition 39 is disposed between the outer nozzle tube 37 and the inner nozzle tube 38 and is close to the closed end; gas spray holes 42 are uniformly distributed on the annular partition plate 39 along the circumferential direction, liquid spray holes 43 are uniformly distributed on the wall of the inner nozzle tube 38 close to the closed end, and gas-liquid mixing spray holes 44 are uniformly distributed on the wall of the outer nozzle tube 37 close to the closed end; a mixing chamber is formed between annular baffle 39, outer nozzle tube 37 adjacent the throat, and inner nozzle tube 38 adjacent the throat. The waste water introduced into the waste water spray gun 34 enters the nozzle inner pipe 38 through the liquid inlet pipe 41 and is sprayed out of the liquid spray holes 43 on the nozzle inner pipe 38 into the mixing cavity; air introduced into the waste water spray gun 34 enters the nozzle outer pipe 37 through the air inlet pipe 40 and is sprayed out of the gas spray holes 42 in the annular partition plate 39 into the mixing cavity, and the gas and the waste water are fully mixed in the mixing cavity and then are sprayed out of the gas-liquid mixing spray holes 44, so that the gas and the liquid are further atomized after being mixed.
The sleeve 15 is provided with a main air inlet pipe 19, the main air inlet pipe 19 is communicated with the interior of the main air inlet channel, and the outer end opening of the main air inlet pipe 19 is provided with a main air inlet pipe flange 31. The main gas inlet pipe flange 31 is connected with natural gas through a main gas inlet pipe, and the natural gas enters a main gas inlet channel through the main gas inlet pipe and the main gas inlet pipe 19 and then is ejected out of the gas orifice 29 of the outer ring gun head 28 through the outer ring gun 17.
The air inlet assembly II comprises an auxiliary air inlet pipe 20, an outer pipe 22, a cover plate 23 and an auxiliary air inlet pipe flange 24. The outer tube 22 is arranged on the spray gun fixing tube II 14, one end of the outer tube 22 is connected with a sealing plate far away from the outer ring gun 17, the cover plate 23 is fixed at the other end of the outer tube 22 and sleeved on the spray gun fixing tube II 14 and matched with the outer wall of the spray gun fixing tube II 14 in a sealing mode, the auxiliary air inlet tube 20 is arranged on the outer tube 22, the auxiliary air inlet tube 20 is communicated with the inner portion of the outer tube 22, and one end of the inner ring gun 16 penetrates through the sealing plate and is communicated with the inner portion of the.
The outer ring gun supports 25 (namely twelve outer ring gun supports 25) which are equal in number and correspond to the outer ring guns 17 one by one are uniformly distributed on the outer wall of the inner throat flaring section 11, the outer ends of the outer ring guns 17 are fixed on the outer ring gun supports 25, and the outer ends of the outer ring guns 17 are fixed in position through the outer ring gun supports 25. The other end of the central tube 6 is provided with a circular ring-shaped swirler baffle 26 close to the inner wall, one end of the outer side of the swirler 8 is fixed with the outer side of the swirler baffle 26 and the inner diameter close to the swirler baffle 26, the swirler baffle 26 is uniformly provided with inner ring gun fixing holes (namely, six inner ring gun fixing holes) which are equal to the inner ring guns 16 in number and correspond to each other one by one, the outer ends of the inner ring guns 16 penetrate through the corresponding inner ring gun fixing holes, and the outer ends of the inner ring guns 16 are fixed in position through the inner ring gun fixing holes. The first air inlet assembly further comprises an inner ring gun head 27 and an outer ring gun head 28; an inner ring gun head 27 is arranged at the outer end of each inner ring gun 16, an outer ring gun head 28 is arranged at the outer end of each outer ring gun 17, and a plurality of air injection holes 29 are formed in the outer side walls of the inner ring gun head 27 and the outer ring gun head 28.
And a cooling air pipe 21 is arranged on the outer wall of the spray gun fixing pipe II 14 close to the other end, the cooling air pipe 21 is communicated with the spray gun fixing pipe II 14, cooling air is injected into the spray gun fixing pipe II 14 through the cooling air pipe 21, and the cooling air plays a cooling role on the spray gun fixing pipe II 14. A pressure regulating valve is arranged on the main gas inlet pipe connected with the main gas inlet pipe flange 31; a pressure regulating valve is arranged on the auxiliary gas inlet pipe connected with the auxiliary gas inlet pipe flange 24; a pressure regulating valve is arranged on the air pipe connected with the cooling air pipe 21; and the air pipes connected with the two air inlet channels of the air inlet flange 13 are respectively provided with a pressure regulating valve.
The outer circle of the outer throat 12 is provided with a boiler connecting flange 32, the outer circle of the outer throat 12 is also provided with a heat insulation cover 33 with a horn structure, the smaller end of the opening of the heat insulation cover 33 is fixedly connected to the outer circle of the outer throat 12, the larger end of the opening of the heat insulation cover 33 faces the combustion chamber, and the waste water incinerator is connected to the boiler through the boiler connecting flange 32.
When the integral combustion device is used, waste water and air are mixed through the atomizing nozzle 35 on the waste water spray gun 34 and then sprayed out, auxiliary gas entering the outer pipe 22 through the auxiliary air inlet pipe 19 passes through the inner ring gun 16 and is sprayed out through the inner ring gun head 27, meanwhile, the air passing through the air inlet flange 13 is divided into two paths, one path of air enters the central cylinder 6 through a channel between the box dividing and dividing plate 4 and the box dividing side plate 5 and is sprayed out through the rotational flow of the cyclone 8 through a channel between the central cylinder 6 and the spray gun fixing pipe I7, airflow sprayed out through the rotational flow of the cyclone 8 plays a role of turbulence on waste water sprayed out of the waste water spray gun 34, and simultaneously supplies heat to the sprayed waste water through combustion with the auxiliary gas. The natural gas in the main air inlet channel passes through the outer ring gun 17 and is sprayed out by the outer ring gun head 28; meanwhile, the other path of air passing through the air inlet flange 13 is combusted together with the jetted waste water after passing through the central cylinder 6 and a channel between the inner throat expansion section 11 and the outer throat.
To sum up, this integral burner is combination formula burner, compact structure, and this burner places natural gas, air and three kinds of substances of waste water together, and the flow and the combustion process of rational organization burner, atomized liquid drop and natural gas catch fire and burn near the incinerator export simultaneously, have realized the integration of waste water atomizing, burning and natural gas burning. The atomizing spray gun effectively atomizes the wastewater, and the natural gas flame not only serves as 'pilot burner' ignition flame of the combustion device, but also wraps the atomized liquid drop group. By reasonably organizing the flowing, heat transfer and mass transfer processes of the medium in the combustion device and the combustion chamber, the atomized liquid drops absorb enough heat to complete the processes of water evaporation, combustible ignition, combustion and burnout. The integral combustion device is mainly characterized in that:
1. the wastewater atomization effect is as follows: the waste water spray gun is atomized in a bubble mode, and the waste water flow rate capable of being treated is large (500-; the size of the wastewater flow channel is larger, so that the problem of spray gun blockage caused by wastewater is avoided; the particle size distribution of the atomized droplets is uniform, the average particle size D32 is less than or equal to 100 mu m, the complete burnout time of the atomized droplets is less than 1s, the residence time in a combustion chamber is more than 2s, so as to ensure the complete burnout of the atomized droplets, and the COD removal rate can reach more than 99%.
2. The flame structure is characterized in that: the flame diameter and the flame length of the waste water combustion device are mainly controlled by three parameters of the rotational flow strength of the air rotational jet, the rigidity of the air direct-current jet, the type of waste water and the like. When the three parameters are reasonably matched, the proper flame shape and structure size are obtained, so that the flame shape is matched with the shape of the combustion chamber, the flame is positioned in the center of the combustion chamber, the flame does not scour the wall surface of the combustion chamber and is not attached to the wall, and the wall surface of the combustion chamber is prevented from being slagging.
3. Combustion characteristics: the combustion device reasonably organizes the flowing, heat transfer and mass transfer processes of air, natural gas, atomized liquid drop group, high-temperature flue gas and other media, so that the waste water is efficiently and stably combusted. Firstly, the combustion device makes atomized liquid drops in a suspension state in the flame, and completes the ignition, combustion and burnout processes of the liquid drops. Secondly, a part of air of the combustion device adopts a rotary jet method, on one hand, rotational flow air draws high-temperature flue gas generated by burning of remote waste water and natural gas to a waste water jet, heat released by burning of the waste water and the natural gas is fully utilized, and sufficient evaporation heat and ignition heat are provided for evaporation and ignition of water of atomized liquid drops; on the other hand, the swirling air not only winds the atomized liquid drops outwards to enable the atomized liquid drops to be fully mixed with air, the liquid drops are suspended in air flow, but also entrains high-temperature flame and smoke gas generated by combustion of outside natural gas, so that the temperature of the swirling air is increased, and evaporation of water and ignition combustion of liquid drop groups are facilitated. Finally, the combustion device is an integral body which realizes the close connection of various media, and the waste water combustion process and the natural gas combustion and the heat utilization after the combustion are inseparable. The combustion device reasonably organizes the flowing, heat transfer and mass transfer processes of various media, and fully utilizes the heat of high-temperature flue gas generated by the combustion of natural gas and waste water, so that atomized liquid drops are timely evaporated, ignited, combusted and burned out in the flame of the natural gas, and the high-efficiency and stable combustion of the waste water is realized.
4) Combustible and salt conversion characteristics: combustion of combustible material in atomized droplets to CO2And H2Harmless gas such as O and small amount of SO2Gases, salts and other non-combustible substances (e.g. SiO)2Etc.) in high-temperature flame environment, the ash is finally converted into ash through high-temperature melting and sintering, and when the temperature of the flue gas is lower than the melting temperature of the ash, the ash is solid dust particles in the flue gas and flows along with the flue gas. SO (SO)2And dust and other pollutants can be treated by subsequent conventional environment-friendly equipment such as desulfurization and dust removal, so that the smoke can reach the standard and be discharged.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. An integral combustion device suitable for incinerating high-salinity organic wastewater is characterized by comprising a shell (1), a first air inlet assembly, a second air inlet assembly and a wastewater spray gun (34);
the casing (1) comprises an air box front plate (2), an air box back plate (3), an air box partition plate (4), an air box side plate (5), a central cylinder (6), a spray gun fixing pipe I (7), a cyclone (8), an inner roar fixing plate (9), an inner ring throat straight section (10), an inner throat flaring section (11) and an outer throat (12); the front plate (2) of the air box, the back plate (3) of the air box and the partition plate (4) of the air box are all provided with inner circular holes; the air box front plate (2) is fixedly arranged at one end of the air box side plate (5), the air box back plate (3) is arranged at the other end of the air box side plate (5), and the air box dividing plate (4) is arranged in the air box side plate (5) and is positioned between the air box front plate (2) and the air box back plate (3); an air inlet is formed in the air box side plate (5), an air inlet flange (13) is arranged on the air inlet of the air box side plate (5), and the air inlet is divided into two air inlet channels through an air box dividing plate (4); the central cylinder (6) is perpendicular to the air box partition plate (4), one end of the central cylinder (6) is fixedly connected with the inner circle side of the air box partition plate (4), the other end of the central cylinder (6) extends out of the air box back plate (3), and the spray gun fixing pipe I (7) is arranged in the central cylinder (6) and is coaxial with the central cylinder (6); the swirler (8) is sleeved on the spray gun fixing pipe I (7), and the swirler (8) is close to the other end of the central barrel (6); the middle part of the inner roar fixing plate (9) is provided with a hole and is sleeved on the central cylinder (6), and the inner roar fixing plate (9) is positioned on the outer side of the air box back plate (3); the inner ring throat straight section (10) is sleeved outside the central cylinder (6), one end of the inner ring throat straight section (10) is fixed on the inner throat fixing plate (9), one end of the inner throat flaring section (11) with a small diameter is fixedly connected with the other end of the inner ring throat straight section (10), and the inner ring throat straight section (10), the inner throat flaring section (11) and the central cylinder (6) are coaxially arranged; the outer throat (12) is arranged outside the inner throat flaring section (11) and the inner ring throat straight section (10), one end of the outer throat (12) is fixedly connected to the air box back plate (3), and the outer throat (12) and the central cylinder (6) are coaxially arranged;
the first air inlet assembly comprises a spray gun fixing pipe II (14), a sleeve (15), an inner ring gun (16), an outer ring gun (17) and a panel (18); the sleeve (15) is sleeved outside the spray gun fixing pipe II (14), sealing plates are arranged between two ends of the sleeve (15) and the outer wall of the spray gun fixing pipe II (14), and a main air inlet channel is formed between the sleeve (15) and the spray gun fixing pipe II (14); a plurality of inner ring guns (16) are uniformly distributed on the outer side of one end of the sleeve (15), and one ends of the inner ring guns (16) penetrate through the main air inlet channel; a plurality of outer ring guns (17) are uniformly distributed on the outer side of one end of the sleeve (15) and the outer side of the inner ring guns (16), and one ends of the outer ring guns (17) penetrate through the sleeve (15) and are communicated with the interior of the main air inlet channel; the other end of the inner ring gun (16) and the other end of the outer ring gun (17) are coaxially arranged with the spray gun fixing pipe II (14); the panel (18) is provided with a through hole, the panel (18) is sleeved outside the sleeve (15) through the through hole on the panel and is fixed with the sleeve (15), and the panel (18) is fixedly connected with the outer side face of the bellows front plate (2); the outer ring gun (17) penetrates through the air box partition plate (4), and the end part of the other end of the outer ring gun (17) is positioned between the inner throat opening flaring section (11) and the outer throat opening (12); the other end of the inner ring gun (16) is arranged between the spray gun fixing pipe I (7) and the central cylinder (6), and the end part of the other end of the inner ring gun (16) penetrates out from the position between the outer side of the cyclone (8) and the inner wall of the central cylinder (6);
a spray gun rod of the waste water spray gun (34) penetrates through the spray gun fixing pipe II (14) and the spray gun fixing pipe I (7), and an atomizing nozzle (35) on the waste water spray gun (34) extends out of the spray gun fixing pipe I (7);
a main air inlet pipe (19) is arranged on the sleeve (15), and the main air inlet pipe (19) is communicated with the inside of the main air inlet channel;
the air inlet assembly II comprises an auxiliary air inlet pipe (20), and the auxiliary air inlet pipe (20) is communicated with one port of the inner ring gun (16);
and a cooling air pipe (21) is arranged at the other end, close to the sleeve (15), of the outer wall of the spray gun fixing pipe II (14), and the cooling air pipe (21) is communicated with the interior of the spray gun fixing pipe II (14).
2. The integrated combustion plant suitable for incineration of high-salinity organic wastewater according to claim 1, characterized in that: the air inlet assembly II further comprises an outer pipe (22), a cover plate (23) and an auxiliary air inlet pipe flange (24), the outer pipe (22) is arranged on the spray gun fixing pipe II (14), one end of the outer pipe (22) is connected with a sealing plate far away from the outer ring gun (17), the cover plate (23) is fixed to the other end of the outer pipe (22) and sleeved on the spray gun fixing pipe II (14) and is in sealing fit with the outer wall of the spray gun fixing pipe II (14), the auxiliary air inlet pipe (20) is arranged on the outer pipe (22), the auxiliary air inlet pipe (20) is communicated with the outer pipe (22) in the inner portion, and one end of the inner ring gun (16) penetrates through the sealing plate and is communicated with the outer pipe (22) in the inner portion.
3. The integrated combustion plant suitable for incineration of high-salinity organic wastewater according to claim 2, characterized in that: outer ring gun supports (25) which are equal in number and correspond to the outer ring guns (17) one by one are uniformly distributed on the outer wall of the inner throat flaring section (11), and the outer ends of the outer ring guns (17) are fixed on the outer ring gun supports (25); the other end of the central cylinder (6) is provided with a circular ring-shaped swirler baffle (26) close to the inner wall, inner ring gun fixing holes which are equal to the inner ring guns (16) in number and correspond to the inner ring guns one by one are uniformly distributed on the swirler baffle (26), and the outer ends of the inner ring guns (16) penetrate through the corresponding inner ring gun fixing holes; the first air inlet assembly further comprises an inner ring gun head (27) and an outer ring gun head (28); the outer end of each inner ring gun (16) is provided with an inner ring gun head (27), the outer end of each outer ring gun (17) is provided with an outer ring gun head (28), and the outer side walls of the inner ring gun heads (27) and the outer ring gun heads (28) close to the outside are provided with a plurality of air injection holes (29).
4. The integrated combustion plant suitable for incineration of high-salinity organic wastewater according to claim 3, characterized in that: the fixed waste water spray gun fixing flange (30) that sets up on spray gun fixed pipe II (14), set up spray gun flange (36) on the spray gun pole of waste water spray gun (34), spray gun flange (36) are connected with waste water spray gun fixing flange (30), set up main intake pipe flange (31) on the outer port of main intake pipe (19).
5. The integrated combustion plant suitable for incineration of high-salinity organic wastewater according to any of the claims 1 to 4, characterized in that: the atomizing nozzle (35) comprises an outer nozzle tube (37), an inner nozzle tube (38) and an annular partition plate (39), one end of the outer nozzle tube (37) is communicated with an air inlet tube (40) of the waste water spray gun (34), one end of the inner nozzle tube (38) is communicated with an air inlet tube (41) of the waste water spray gun (34), the other end of the outer nozzle tube (37) is shrunk and closed, the other end of the inner nozzle tube (38) is shrunk and closed, and the annular partition plate (39) is arranged between the outer nozzle tube (37) and the inner nozzle tube (38) and is close to the closed end; gas spray holes (42) are uniformly distributed in the annular partition plate (39) along the circumferential direction of the annular partition plate, liquid spray holes (43) are uniformly distributed in the wall, close to the mouth, of the inner nozzle tube (38), and gas-liquid mixing spray holes (44) are uniformly distributed in the wall, close to the mouth, of the outer nozzle tube (37); and a mixing cavity is formed between the annular partition plate (39) and the nozzle outer tube (37) close to the closing-in and the nozzle inner tube (38) close to the closing-in.
6. The integrated combustion plant suitable for incineration of high-salinity organic wastewater according to claim 4, characterized in that: a pressure regulating valve is arranged on a main gas inlet pipe connected with the main gas inlet pipe flange (31); a pressure regulating valve is arranged on the auxiliary gas inlet pipe connected with the auxiliary gas inlet pipe flange (24); a pressure regulating valve is arranged on the air pipe connected with the cooling air pipe (21); and air pipes connected with the two air inlet channels of the air inlet flange (13) are respectively provided with a pressure regulating valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944285.9U CN211290080U (en) | 2019-11-12 | 2019-11-12 | Integral combustion device suitable for high-salinity organic wastewater incineration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921944285.9U CN211290080U (en) | 2019-11-12 | 2019-11-12 | Integral combustion device suitable for high-salinity organic wastewater incineration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686256A (en) * | 2019-11-12 | 2020-01-14 | 重庆大学 | Integral combustor suitable for high-salinity organic wastewater incineration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686256A (en) * | 2019-11-12 | 2020-01-14 | 重庆大学 | Integral combustor suitable for high-salinity organic wastewater incineration |
| CN110686256B (en) * | 2019-11-12 | 2024-03-15 | 重庆大学 | Integral combustor suitable for high-salinity organic wastewater incineration |
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