CN211290080U - An integral combustion device suitable for incineration of high-salt organic wastewater - Google Patents

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

An integral combustion device suitable for incineration of high-salt organic wastewater

technical field

The utility model relates to an incineration treatment technology, in particular to a waste water incineration device.

Background technique

The treatment of wastewater containing organic matter and high-concentration salt (hereinafter referred to as high-salt wastewater) produced by the chemical industry has always been a major problem in the field of environmental protection. These wastewaters usually not only contain a variety of acids, aldehydes, alcohols, olefins and other organic substances (or combustibles), but also a large number of salts such as Na ⁺ , K ⁺ , Ca ²⁺ , Cl ^- , F ^- , SO ^2- ₄ , etc. class components. Direct discharge of high-salt organic wastewater will seriously pollute the environment. High-salt wastewater generally inhibits the growth of biological bacteria, resulting in poor degradation and treatment effects of existing biochemical treatment technologies for this type of wastewater. The process of treating high-salt wastewater by physical and chemical methods is complicated and the treatment cost is high. Atomization incineration treatment is to atomize high-salt wastewater and spray it into a high-temperature incineration treatment device. The atomized droplets absorb the heat in the furnace, evaporate a large amount of water, and then the combustibles (C, H, O) in the droplets. , S and other elements) reach a higher temperature, complete the ignition, combustion and burn-out process of organic matter, and the combustibles eventually generate carbon dioxide, water and other harmless substances and a small amount of sulfur dioxide and other gases, and the COD removal rate of wastewater can reach more than 99%, Finally, the residual non-combustible salts are turned into ash at high temperature. As a simple, efficient and highly adaptable wastewater treatment technology, wastewater incineration technology is easy to realize industrialization, and is more suitable for the treatment of chemical wastewater, papermaking black liquor and petroleum wastewater containing organic matter and high concentration of salt.

The atomization incineration treatment technology can also completely decompose the toxic and harmful dangerous substances (such as cyanogens, polychlorinated biphenyls, etc.) contained in the wastewater in a high temperature environment, which provides a good solution for the treatment of such wastewater and meeting the requirements of environmental protection discharge. A practical way to deal with it.

Foreign research on the incineration of organic wastewater started early, and the technology is relatively mature. Among them, the fluidized bed incineration technology is particularly prominent. The circulating fluidized bed incinerator developed by CA Company in the United States increases the air intake and increases the air velocity to intensify the turbulence, so that the wastewater can be fully burned in the combustion area. The American Mneasha Company uses fuel oil as auxiliary fuel to incinerate the papermaking night in a fluidized bed incinerator, the furnace temperature is 732 ℃, and the daily processing capacity of each furnace reaches 125t.

High-salt chemical wastewater incineration technology is also widely used in domestic industries. Bierushan and others use fluidized bed incineration technology to incinerate high-salt wastewater produced by nylon 66 salt factories. The wastewater mainly contains adipic acid and hexamethylenediamine. And other organic matter, also contains about 1% NaOH. The waste water enters the furnace from the dense phase area for incineration. In the case of adding additives, the fluidization of the dense phase area is normal, no coking and slagging phenomenon occurs, and the bed temperature is 850-900 ℃. The wastewater incinerator designed by Zhejiang University for Jiaxing Pinghu Phenolic Plastics Factory, the wastewater incinerator designed by Southeast University for Nantong Acetic Acid Chemical Plant and a chemical plant in Dalian, etc. However, the high-salt wastewater incineration technology still has obvious shortcomings. The main problems are that the incineration device does not fully consider the influence of salinity, and the combustion system design is not perfect. There are too many residues, which lead to the blockage of the atomizing nozzle, and serious problems such as slagging, blockage, and corrosion in the incinerator. The furnace has to be shut down for maintenance or the furnace needs to be cleaned regularly.

At present, the examples of wastewater incineration are to send wastewater and auxiliary fuels (such as natural gas, oil, coal, etc.) into the furnace respectively. First, the auxiliary fuel is ignited and burned stably to form a high temperature environment, and then the wastewater is injected into the wastewater to make the wastewater Evaporates, catches fire and burns in high temperature environments. Wastewater and auxiliary fuel are located in different positions of the incineration system, not in the same structure, and there is a certain distance between the positions where they are injected into the furnace, forming relatively independent combustion areas. There is a lack of direct connection and interaction between them. Therefore, the existing wastewater incineration technology still has shortcomings. For example, the heat released by auxiliary fuel and wastewater combustion is not fully utilized, the evaporation time of wastewater water is long, it is difficult to catch fire, the combustion effect is poor, and the burnout time is long, which also reduces the size of the incinerator. Also larger.

Utility model content

Aiming at the deficiencies in the above-mentioned prior art, the utility model provides a device that can achieve a good atomization state, and can continue to work under the condition of a large waste water flow (500-5000kg/h), so as to ensure the sprayed liquid It is an integral combustion device suitable for the incineration of high-salt organic wastewater, which can catch fire and fully burn in the flame package, and can achieve a good combustion effect.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

An integral combustion device suitable for the incineration of high-salt organic waste water, comprising a casing, a first air intake assembly, a second air intake assembly and a waste water spray gun;

The casing includes a bellows front plate, a bellows back plate, a bellows dividing plate, a bellows side plate, a central barrel, a spray gun fixing pipe I, a cyclone, an inner roar fixing plate, a straight section of the inner ring throat, and an inner throat expansion. The mouth section and the outer throat; the bellows front plate, the bellows back plate and the bellows dividing plate are all provided with inner circular holes; the bellows front plate is fixedly arranged on one end of the bellows side plate, and the bellows back plate is arranged on the bellows On the other end of the side panel, the bellows dividing plate is arranged in the bellows side panel and between the bellows front panel and the bellows back panel; the bellows side panel is provided with an air inlet, and the air inlet of the bellows side panel is The air inlet flange is provided, and the air inlet is divided into two air inlet channels by the bellows dividing plate; the central tube is perpendicular to the bellows dividing plate, and one end of the central tube is fixedly connected with the inner circle side of the bellows dividing plate, so The other end of the central cylinder protrudes from the bellows back plate, the spray gun fixing pipe I is arranged in the center cylinder and is arranged coaxially with the central cylinder; the cyclone is sleeved on the spray gun fixing pipe I, the swirl flow The bellows is close to the other end of the central cylinder; the middle of the inner bellows fixing plate has a hole and is sleeved on the central cylinder, the inner bellows fixing plate is located on the outer side of the bellows back plate; the inner ring throat straight section is sleeved on the center cylinder Outside the central cylinder, one end of the straight section of the throat mouth of the inner ring is fixed on the inner roar mouth fixing plate, and the end with the smaller diameter of the flared section of the inner throat mouth is fixedly connected with the other end of the straight section of the throat mouth of the inner ring, so The straight section of the throat of the inner ring, the flared section of the inner throat and the central cylinder are arranged coaxially; the outer throat is arranged outside the flared section of the inner throat and the straight section of the throat of the inner ring, and the outer throat is One end is fixedly connected to the back plate of the bellows, and the outer throat is coaxial with the central cylinder;

The air intake assembly 1 includes a spray gun fixing pipe II, a casing, an inner ring gun, an outer ring gun and a panel; the sleeve is sleeved outside the spray gun fixing pipe II, and the two ends of the sleeve are connected to the spray gun fixing pipe II. A sealing plate is arranged between the outer walls, 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 evenly distributed on the outer side of one end of the sleeve, and one end of the inner ring gun is pierced. Passing through the main air inlet channel; a plurality of outer ring guns are evenly distributed on the outer side of one end of the sleeve and on the outer side of the inner ring gun, and one end of the outer ring guns passes through the sleeve and communicates with the main air inlet channel; The other end of the inner ring gun and the other end of the outer ring gun are arranged coaxially with the spray gun fixing pipe II; the panel is provided with a through hole, and the panel is sleeved outside the casing through the through hole on the panel and is connected with the casing. The casing is fixed, and the panel is fixedly connected to the outer side of the front plate of the bellows; the outer ring gun passes through the bellows dividing plate, and the other end of the outer ring gun is located at the flared section of the inner throat and the outer throat The other end of the inner ring gun is arranged between the fixed pipe I of the spray gun and the center cylinder, and the end of the other end of the inner ring gun penetrates between the outer side of the cyclone and the inner wall of the center cylinder;

The spray gun rod of the waste water spray gun passes through the spray gun fixing pipe II and the spray gun fixing pipe I, and the atomizing nozzle on the waste water spray gun extends out of the spray gun fixing pipe I;

A main air inlet pipe is arranged on the sleeve, and the main air inlet pipe is communicated with the main air inlet passage;

The second air intake assembly includes an auxiliary air intake pipe, and the auxiliary air intake pipe is communicated with a port of the inner ring gun;

A cooling air duct is arranged on the outer wall of the spray gun fixed pipe II near the other end, and the cooling air pipe is communicated with the spray gun fixed pipe II.

As a preferred solution of the present invention, the air inlet assembly 2 further includes an outer pipe, a cover plate and an auxiliary air inlet pipe flange, the outer pipe is arranged on the fixing pipe II of the spray gun, and one end of the outer pipe is separated from the outer pipe. The sealing plate of the outer ring gun is connected, the cover plate is fixed on the other end of the outer pipe and is sleeved on the spray gun fixing pipe II and is sealed with the outer wall of the spray gun fixing pipe II, the auxiliary air inlet pipe is arranged on the outer pipe, the The auxiliary air inlet pipe communicates with the outer pipe, and one end of the inner ring gun passes through the sealing plate and communicates with the outer pipe.

As another preferred solution of the present invention, the outer wall of the flared section of the inner throat is uniformly provided with outer ring gun brackets that are equal in number to the outer ring guns and correspond one-to-one, and the outer ends of the outer ring guns are fixed On the outer ring gun bracket; the other end of the central cylinder is provided with a circular cyclone baffle close to the inner wall, and the cyclone baffle is uniformly arranged with inner rings equal in number to the inner ring guns and corresponding to the inner ring guns one-to-one. a gun fixing hole, the outer end of the inner ring gun passes through the corresponding inner ring gun fixing hole; the air intake assembly 1 also includes an inner ring gun head and an outer ring gun head; the outer end of each of the inner ring guns An inner ring gun head is arranged on the upper ring, an outer ring gun head is set on the outer end of each outer ring gun, and a plurality of air injection holes are arranged on the wall of the inner ring gun head and the outer ring gun head to the outside. .

As another preferred solution of the present invention, the waste water spray gun fixing flange is fixed on the spray gun fixing pipe II, the spray gun connecting flange is arranged on the spray gun rod of the waste water spray gun, and the spray gun connecting flange is fixed with the waste water spray gun Flange connection, the main air inlet pipe flange is arranged on the outer port of the main air inlet pipe.

As an improvement scheme of the present invention, a pressure regulating valve is arranged on the main gas inlet pipe flanged to the main gas inlet pipe; a pressure regulating valve is arranged on the auxiliary gas inlet pipe flanged to the auxiliary gas inlet pipe; A pressure regulating valve is arranged on the air duct connected with the cooling air duct; and a pressure regulating valve is respectively arranged on the air duct connected with the two air inlet passages of the air inlet flange.

Compared with the prior art, for the waste water containing high-concentration salt and combustibles, the technical effect of the present utility model is as follows:

1. The combustion device can make the water evaporate and vaporize when heated in the flame, and the organic matter is burned to generate carbon dioxide, water and other harmless substances, and at the same time, the salt can be solidified into ash under the action of high temperature. In a high temperature combustion environment above 1000 °C, the production of toxic pollutants such as dioxins can be effectively curbed, and the impact of wastewater on the environment can be greatly reduced.

2. The combustion device feeds natural gas, air and waste water into the furnace at the same time, rationally organizes the flow and combustion process, and realizes the integration of waste water atomization combustion and natural gas combustion. Under the appropriate swirl intensity, the swirling air has two positive effects on the combustion of wastewater: on the one hand, the swirling air entrains the high-temperature flue gas produced by the combustion of waste water and natural gas in the distance to the waste water nozzle, which is the waste water moisture. Evaporation and ignition provide sufficient evaporation heat and ignition heat; on the other hand, the swirling air not only rolls the atomized droplets outward, so that the atomized droplets are fully mixed with the swirling air in time, and the swirling air also entrains the natural gas outside Burning high temperature flame. Therefore, the swirling air makes the atomized droplets, the distant high-temperature flue gas and the outer natural gas flame fully mixed near the outlet of the combustion device, and completes the heat exchange and mass exchange, so that the atomized droplets evaporate, ignite and burn in time, and realize the full waste water. Combustion, and ensure full utilization of the high-temperature flue gas heat generated by the combustion of natural gas and waste water.

3. The combustion device has a compact structure and is easy to disassemble. The waste water atomizer is in the most middle position, which is fixed by the inlet flange and the outlet cyclone, and can be disassembled and replaced if necessary. Natural gas and air use two channel paths respectively, and four flow regulating valves are installed, which can be controlled and adjusted according to the corresponding combustion conditions.

4. The waste water combustion device has a large wastewater treatment capacity, which can meet the needs of effective atomization and efficient combustion of large flow (500-5000kg/h) wastewater, and ensure a large size of the wastewater channel to avoid the problem of blockage of the atomization device.

Description of drawings

Fig. 1 is the structural representation one of the integrated combustion device suitable for the incineration of high-salt organic waste water;

Fig. 2 is the structural representation two of the integrated combustion device suitable for high-salt organic waste water incineration;

Figure 3 is a front view of the housing;

Figure 4 is a rear view of the housing;

5 is a cross-sectional view along the A-A direction in FIG. 3;

Fig. 6 is the perspective view after the shell is cut away;

Fig. 7 is the front view of air intake assembly one;

Fig. 8 is the rear view of air intake assembly one;

Fig. 9 is the sectional view along the B-B direction in Fig. 7;

Figure 10 is a schematic structural diagram of the cooperation between a waste water spray gun and a spray gun fixing pipe;

Figure 11 is a cross-sectional view of an atomizing nozzle;

FIG. 12 is a cross-sectional view taken along the C-C direction in FIG. 11 .

In the figure, 1-shell; 2-bellows front plate; 3-bellows back plate; 4-bellows dividing plate; 5-bellows side plate; 6-center cylinder; 7-spray gun fixing pipe I; 8-cyclone; 9—Inner roar fixed plate; 10—Inner ring throat straight section; 11—Inner throat flared section; 12—Outer throat; 13—Air inlet flange; 14—Spray gun fixing pipe II; 15—Sleeve ;16—inner ring gun; 17—outer ring gun; 18—panel; 19—main air intake pipe; 20—auxiliary air intake pipe; 21—cooling air pipe; 22—outer pipe; 23—cover plate; 24—auxiliary air intake pipe Flange; 25—outer ring gun bracket; 26—cyclone baffle; 27—inner ring gun head; 28—outer ring gun head; 29—air jet hole; 30—wastewater spray gun fixing flange; 31—main intake pipe Flange; 32—Boiler connection flange; 33—Insulation cover; 34—Waste water spray gun; 35—Atomization nozzle; 36—Spray gun connection flange; 37—Nozzle outer pipe; 38—Nozzle inner pipe; ; 40—air inlet pipe; 41—liquid inlet pipe; 42—gas nozzle; 43—liquid nozzle; 44—gas-liquid mixing nozzle.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1-10 , an integral combustion device suitable for the incineration of high-salt organic wastewater includes a casing 1 , an air intake assembly 1, an air intake assembly 2 and a waste water spray gun 34 .

The structure of the casing is shown in Figure 3-6. The casing 1 includes a bellows front plate 2, a bellows back plate 3, a bellows dividing plate 4, a bellows side plate 5, a central cylinder 6, a spray gun fixing pipe I7, a cyclone 8, Inner roar fixed plate 9 , inner ring throat straight section 10 , inner throat flared section 11 and outer throat 12 . The bellows front plate 2 , the bellows back plate 3 and the bellows dividing plate 4 are all provided with inner circular holes. The bellows front plate 2 is fixedly arranged on one end of the bellows side plate 5, the bellows back plate 3 is arranged on the other end of the bellows side plate 5, and the bellows dividing plate 4 is arranged in the bellows side plate 5 and is located between the bellows front plate 2 and the bellows back. between plate 3. The bellows side plate 5 is provided with an air inlet, the air inlet of the bellows side plate 5 is provided with an air inlet flange 13 , and the air inlet is divided into two air inlet passages by the bellows dividing plate 4 . The center cylinder 6 is perpendicular to the bellows dividing plate 4, one end of the center cylinder 6 is fixedly connected with the inner circle side of the bellows dividing plate 4, the other end of the center cylinder 6 protrudes from the bellows back plate 3, and the spray gun fixing pipe I7 is arranged in the center cylinder 6. And it is arranged coaxially with the central cylinder 6 . The cyclone 8 is sleeved on the fixed pipe I7 of the spray gun, and the cyclone 8 is close to the other end of the central cylinder 6 . The inner bellows fixing plate 9 has a hole in the middle and is sleeved on the central cylinder 6, the inner bellows fixing plate 9 is located on the outside of the bellows back plate 3, the inner bellows fixing plate 9 is a circular plate, and the inner bellows fixing plate 9 is a circular plate. The diameter of the outer circle is smaller than the diameter of the inner circular hole of the bellows back plate 3; the straight section 10 of the throat mouth of the inner ring is sleeved outside the central tube 6, and one end of the straight section 10 of the throat mouth of the inner ring is fixed on the inner roar mouth fixing plate 9, and the inner throat One end with a smaller diameter of the flared section 11 is fixedly connected to the other end of the straight section 10 of the throat of the inner ring. The outer throat 12 is arranged outside the flared section 11 of the inner throat and the straight section 10 of the inner throat. set up.

The structure of the air intake assembly 1 is shown in Figures 7-9. The air intake assembly 1 includes a spray gun fixing tube 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 II14, and sealing plates are arranged between both ends of the sleeve 15 and the outer wall of the spray gun fixing pipe II14. The main air inlet channel is formed between the sleeve 15 and the spray gun fixing pipe II14. A plurality of inner ring guns 16 are evenly arranged on the outer side of one end of the sleeve 15, and one end of the inner ring guns 16 passes through the main air inlet passage. In this embodiment, there are six inner ring guns 16. A plurality of outer ring guns 17 are evenly distributed on the outer side of one end of the sleeve 15 and on the outer side of the inner ring gun 16. One end of the outer ring guns 17 passes through the sleeve 15 and communicates with the main air intake passage. In this embodiment, , the outer ring gun 17 is set twelve. The other end of the inner ring gun 16 and the other end of the outer ring gun 17 are arranged coaxially with the spray gun fixing pipe II 14; the panel 18 is provided with a through hole, and the panel 18 is sleeved outside the sleeve 15 through the through hole on the panel and is connected with the sleeve. The pipe 15 is fixed, and the panel 18 is fixedly connected to the outer side of the front panel 2 of the bellows. The outer ring gun 17 passes through the bellows dividing plate 4, and the other end of the outer ring gun 17 is located between the flared section 11 of the inner throat and the outer throat 12; the other end of the inner ring gun 16 is arranged on the spray gun fixing pipe I7 Between the center cylinder 6 and the inner ring gun 16 , the other end of the inner ring gun 16 protrudes from the outer side of the cyclone 8 and the inner wall of the center cylinder 6 . As can be seen from FIG. 9 , each inner ring gun 16 is composed of the inner ring gun straight pipe section I, the inner ring gun curved pipe section II and the inner ring gun straight pipe section III, and the inner ring gun straight pipe section III passes through the main air intake passage, The straight tube section I of the inner ring gun passes through between the outer side of the cyclone 8 and the inner wall of the center cylinder 6, the straight tube section I of the inner ring gun and the straight tube section III of the inner ring gun are connected by the curved tube section II of the inner ring gun, and the six inner ring The gun straight pipe section I opens out relative to the six inner ring gun straight pipe sections III to form a grip; each outer ring gun 17 is composed of the outer ring gun straight pipe section I and the outer ring gun curved pipe section II, and the outer ring gun curved pipe section One end of II is connected to one end of the outer ring gun straight pipe section I, the outer ring gun straight pipe section I passes through the bellows partition plate 4, and the other end of the outer ring gun straight pipe section I is located between the inner throat flared section 11 and the outer throat. Between the ports 12 , the other end of the curved pipe section II of the outer ring gun is connected to the sleeve 15 .

The spray gun rod of the waste water spray gun 34 passes through the spray gun fixing pipe II14 and the spray gun fixing pipe I7, and the atomizing nozzle 35 on the waste water spray gun 34 extends out of the spray gun fixing pipe I7. Figure 10 is a schematic structural diagram of the waste water spray gun 34 passing through the spray gun fixing pipe II14. A waste water spray gun fixing flange 30 is fixed on the other end of the spray gun fixing pipe II14, a spray gun connecting flange 36 is arranged on the 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 the nozzle outer pipe 37, the nozzle inner pipe 38 and the annular partition 39. As shown in Figures 11 and 12, one end of the nozzle outer pipe 37 is communicated with the air inlet pipe 40 of the waste water spray gun 34, and the nozzle inner pipe 38 is One end is communicated with the liquid inlet pipe 41 of the waste water spray gun 34, the other end of the nozzle outer pipe 37 is shrunk and closed, the other end of the nozzle inner pipe 38 is shrunk and closed, and the annular baffle 39 is arranged between the nozzle outer pipe 37 and the nozzle inner pipe 38. Gas nozzles 42 are evenly arranged on the annular baffle 39 along its circumferential direction, liquid nozzles 43 are evenly arranged on the wall of the nozzle inner pipe 38 near the nozzle, and the nozzle outer pipe 37 is uniformly arranged on the wall of the nozzle. The cloth is provided with gas-liquid mixing nozzle holes 44; a mixing cavity is formed between the annular baffle 39, the nozzle outer pipe 37 near the constriction and the nozzle inner pipe 38 close to the constriction. 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 into the mixing chamber from the liquid spray holes 43 on the nozzle inner pipe 38; the air introduced into the waste water spray gun 34 passes through the air inlet pipe 40. It enters into the nozzle outer pipe 37 and is sprayed from the gas nozzle holes 42 on the annular partition 39 into the mixing chamber. The gas and waste water are fully mixed in the mixing chamber and then sprayed out from the gas-liquid mixing nozzle holes 44 to mix the gas and liquid. After further atomization.

The casing 15 is provided with a main air intake pipe 19 , the main air intake pipe 19 communicates with the main air intake passage, and a main air intake pipe flange 31 is provided on the outer port of the main air intake pipe 19 . The main intake pipe flange 31 is connected with the natural gas through the main gas intake pipe, and the natural gas enters the main intake channel through the main gas intake pipe and the main intake pipe 19, and then passes through the outer ring gun 17, and then passes through the air injection hole of the outer ring gun head 28. 29 squirts.

The second air intake assembly includes an auxiliary air intake pipe 20 , an outer pipe 22 , a cover plate 23 and an auxiliary air intake pipe flange 24 . The outer tube 22 is arranged on the spray gun fixing tube II14, one end of the outer tube 22 is connected with the sealing plate away from the outer ring gun 17, and the cover plate 23 is fixed on the other end of the outer tube 22 and is sleeved on the spray gun fixing tube II 14 and fixed with the spray gun The outer wall of the tube II14 is sealed and matched, the auxiliary air inlet pipe 20 is arranged on the outer tube 22, the auxiliary air inlet tube 20 communicates with the outer tube 22, and one end of the inner ring gun 16 passes through the sealing plate and communicates with the outer tube 22.

Outer ring gun brackets 25 (that is, twelve outer ring gun brackets 25 are provided) are evenly arranged on the outer wall of the flared section 11 of the inner throat and are equal in number to the outer ring guns 17 and corresponding one to one (that is, twelve outer ring gun brackets 25 are arranged), and the outer ends of the outer ring guns 17 It is fixed on the outer ring gun bracket 25 , and the outer end of the outer ring gun 17 is fixed in position through the outer ring gun bracket 25 . The other end of the central cylinder 6 is provided with an annular cyclone baffle plate 26 close to the inner wall. The flow baffle 26 is evenly provided with inner ring gun fixing holes that are equal in number to the inner ring guns 16 and correspond one-to-one (that is, six inner ring gun fixing holes are provided), and the outer ends of the inner ring guns 16 pass through the corresponding inner ring guns. Ring gun fixing hole, the outer end of the inner ring gun 16 is fixed in position through the inner ring gun fixing hole. The air intake assembly 1 also includes an inner ring gun head 27 and an outer ring gun head 28; an inner ring gun head 27 is provided on the outer end of each inner ring gun 16, and an inner ring gun head 27 is provided on the outer end of each outer ring gun 17. The outer ring gun head 28 , the inner ring gun head 27 and the outer ring gun head 28 are provided with a plurality of air injection holes 29 on the outer wall.

A cooling air duct 21 is arranged on the outer wall of the spray gun fixed pipe II14 near the other end. The cooling air pipe 21 communicates with the spray gun fixed pipe II14. plays a cooling role. A pressure regulating valve is set on the main gas inlet pipe connected with the main gas inlet pipe flange 31; a pressure regulating valve is set on the auxiliary gas inlet pipe connected with the auxiliary gas inlet pipe flange 24; Regulating valve; pressure regulating valves are respectively set on the air pipes connected with the two air inlet passages of the air inlet flange 13 .

A boiler connection flange 32 is arranged on the outer circumference of the outer throat 12, and a heat insulating cover 33 with a horn structure is also arranged on the outer circumference of the outer throat 12. The end of the heat insulating cover 33 with a smaller opening is fixedly connected to the outer throat 12. On the outer circle of the heat insulating cover 33, the larger end of the opening of the heat insulating cover 33 faces the combustion chamber, and the waste water incinerator is connected to the boiler through the boiler connecting flange 32.

When using the integrated combustion device, the waste water and air are mixed and sprayed through the atomizing nozzle 35 on the waste water spray gun 34, and the auxiliary gas entering the outer pipe 22 after passing through the auxiliary air inlet pipe 19 passes through the inner ring gun 16, and is discharged by the inner ring. The gun head 27 is ejected, and at the same time, the air passing through the air inlet flange 13 is divided into two paths, and one air enters the center cylinder 6 through the channel between the sub-box dividing plate 4 and the sub-box side plate 5, and then passes through the center The channel between the barrel 6 and the fixed pipe I7 of the spray gun is swirled out by the swirl device 8, and the air flow ejected by the swirl flow of the swirler 8 not only plays a role in disturbing the waste water ejected by the waste water spray gun 34, but also has a turbulent flow effect. Auxiliary gas combustion provides heat to the ejected wastewater. The natural gas in the main air inlet passage passes through the outer ring gun 17 and is ejected by the outer ring gun head 28; at the same time, the other air after passing through the air inlet flange 13 passes through the center cylinder 6 and the inner bell mouth flared section 11 It burns with the main gas behind the passage between the outer throats and the ejected waste water.

To sum up, the integrated combustion device is a combined combustion device with a compact structure. The combustion device places natural gas, air and waste water together to rationally organize the flow and combustion process of the combustion device to atomize droplets and natural gas. At the same time, fire and combustion are carried out near the outlet of the incinerator, realizing the integration of waste water atomization, combustion and natural gas combustion. The atomizing spray gun effectively atomizes the waste water, and the natural gas flame not only acts as the "ever-bright light" ignition flame of the combustion device, but also wraps the atomized droplet group by the natural gas flame. By rationally organizing the flow, heat transfer and mass transfer process of the combustion device and the medium in the combustion chamber, the atomized droplets can absorb enough heat to complete the process of evaporation of water, ignition, combustion and burnout of combustibles. The main features of the integral combustion device are:

1. Wastewater atomization effect: The waste water spray gun is bubble-type atomization, which can handle a large waste water flow (500-5000kg/h); the size of the waste water flow channel is large to avoid the problem of waste water causing the spray gun to block; the particle size of the atomized droplets The distribution is uniform, the average particle size D32≤100μm, the complete burnout time of the atomized droplets is less than 1s, and the residence time in the combustion chamber is greater than 2s to ensure that the atomized droplets are completely burned out, and the COD removal rate can reach more than 99%.

2. Flame structure characteristics: The flame diameter and flame length of the waste water combustion device are mainly controlled by three parameters: the swirl intensity of the air swirling jet, the rigidity of the air straight jet and the type of waste water. When the three parameters are reasonably matched, a suitable flame shape and structure size can be obtained, so that the flame shape can be adapted to the shape of the combustion chamber. Slag on the wall.

3. Combustion characteristics: The combustion device reasonably organizes the flow, heat transfer and mass transfer process of air, natural gas, atomized droplet groups and high-temperature flue gas, so that the wastewater can be burned efficiently and stably. First, the combustion device makes the atomized droplets suspend in the flame, and completes the process of ignition, combustion and burnout of the droplets. Secondly, a part of the air of the combustion device adopts the rotary jet method. On the one hand, the swirling air entrains the high-temperature flue gas generated by the combustion of waste water and natural gas in the distance to the waste water nozzle, and makes full use of the heat released by the combustion of waste water and natural gas. Moisture evaporation and ignition of the atomized droplets provide sufficient evaporation heat and ignition heat; on the other hand, the swirling air not only rolls the atomized droplets out, but also makes the atomized droplets fully mix with the air, and the droplets are suspended in the air flow , and the swirling air also entrains the high-temperature flame and flue gas of the natural gas combustion on the outside, so as to increase the temperature of the swirling air, which is conducive to the evaporation of water in the droplet group and the ignition and combustion. Finally, the combustion device is a whole that realizes the close connection of various media. The combustion process of waste water is inseparable from the combustion of natural gas and the utilization of heat after combustion. The combustion device reasonably organizes the flow, heat transfer and mass transfer process of various media, and makes full use of the high-temperature flue gas heat generated by the combustion of natural gas and waste water to make the atomized droplets evaporate, ignite, burn and burn in time in the natural gas flame. To achieve efficient and stable combustion of wastewater.

4) Conversion characteristics of combustibles and salts: the combustibles in the atomized droplets are burned to generate harmless gases such as CO ₂ and H ₂ O, as well as a small amount of SO ₂ gas, salts and other incombustible substances (such as SiO ₂ , etc.) In the high temperature flame environment, after high temperature melting and sintering, it is finally converted into ash. When the temperature of the flue gas is lower than the melting temperature of the ash content, the ash content is solid dust particles in the flue gas and flows with the flue gas. Pollutants such as SO ₂ and dust can be treated by conventional environmental protection equipment such as subsequent desulfurization and dust removal, so that the flue gas can be discharged up to the standard.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and all of them should be included in the scope of the claims of the present invention.

Claims (6)

1. an integral combustion device suitable for high-salt organic waste water incineration, is characterized in that, comprises shell (1), air intake assembly one, air intake assembly two and waste water spray gun (34); The casing (1) comprises a bellows front plate (2), a bellows back plate (3), a bellows dividing plate (4), a bellows side plate (5), a central cylinder (6), a spray gun fixing pipe I (7), a cyclone (8), an inner bellows fixing plate (9), a straight section of the inner ring throat (10), a flared section of the inner throat (11) and an outer throat (12); the bellows front plate (2) ), the bellows back plate (3) and the bellows dividing plate (4) are all provided with inner circular holes; the bellows front plate (2) is fixedly arranged on one end of the bellows side plate (5), the bellows back plate (3) ) is arranged on the other end of the bellows side plate (5), and the bellows dividing plate (4) is arranged in the bellows side plate (5) and between the bellows front plate (2) and the bellows back plate (3); The bellows side plate (5) is provided with an air inlet, the air inlet of the bellows side plate (5) is provided with an air inlet flange (13), and the air inlet is divided into two inlets by the bellows dividing plate (4). an air channel; the central cylinder (6) is perpendicular to the bellows dividing plate (4), one end of the central cylinder (6) is fixedly connected to the inner circular side of the bellows dividing plate (4), and the center cylinder (6) is The other end protrudes from the bellows back plate (3), and the spray gun fixing pipe I (7) is arranged in the center cylinder (6) and is arranged coaxially with the center cylinder (6); the cyclone (8) is sleeved On the spray gun fixing pipe I (7), the cyclone (8) is close to the other end of the central cylinder (6); the inner bellows fixing plate (9) has a hole in the middle and is sleeved on the central cylinder (6) Above, the inner bellows fixing plate (9) is located on the outside of the bellows back plate (3); the inner ring throat straight section (10) is sleeved outside the central tube (6), One end of (10) is fixed on the inner bellows fixing plate (9), and the end of the inner throat flared section (11) with a smaller diameter is fixedly connected with the other end of the inner ring throat straight section (10), so The inner throat straight section (10), the inner throat flared section (11) and the central cylinder (6) are arranged coaxially; the outer throat (12) is arranged in the inner throat flared section (11) In addition to the straight section (10) of the inner ring throat, one end of the outer throat (12) is fixedly connected to the bellows back plate (3), and the outer throat (12) is arranged coaxially with the center cylinder (6). ; The air intake assembly 1 includes 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 on the spray gun. Outside the fixed pipe II (14), sealing plates are provided between both ends of the sleeve (15) and the outer wall of the spray gun fixed pipe II (14), and the sleeve (15) is connected to the spray gun fixed pipe II (14) A main air intake passage is formed between them; a plurality of inner ring guns (16) are evenly arranged on the outside of one end of the sleeve (15), and one end of the inner ring gun (16) passes through the main air inlet passage; the A plurality of outer ring guns (17) are evenly distributed on the outside of one end of the sleeve (15) and on the outside of the inner ring gun (16), and one end of the outer ring guns (17) passes through the sleeve (15) and is connected with the sleeve (15). The main air inlet channel is communicated inside; the other end of the inner ring gun (16) and the other end of the outer ring gun (17) are arranged coaxially with the spray gun fixing pipe II (14); the panel (18) is provided with A through hole, the panel (18) is sleeved on the outside of the sleeve (15) through the through hole and is fixed to the sleeve (15), and the panel (18) is fixedly connected to the outer side of the bellows front panel (2) ; The outer ring gun (17) passes through the bellows dividing plate (4), and the other end of the outer ring gun (17) is located between the inner throat flared section (11) and the outer throat (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 other end of the inner ring gun (16) is separated from the cyclone ( 8) penetrates between the outer side and the inner wall of the central cylinder (6); The spray gun rod of the waste water spray gun (34) passes through the spray gun fixing pipe II (14) and the spray gun fixing pipe I (7), and the atomizing nozzle (35) on the waste water spray gun (34) extends out of the spray gun fixing pipe I ( 7); The sleeve (15) is provided with a main air intake pipe (19), and the main air intake pipe (19) communicates with the main air intake passage; The second air intake assembly includes an auxiliary air intake pipe (20), and the auxiliary air intake pipe (20) communicates with a port of the inner ring gun (16); A cooling air duct (21) is arranged on the outer wall of the spray gun fixing pipe II (14) near the other end of the sleeve (15), and the cooling air pipe (21) communicates with the spray gun fixing pipe II (14). 2. The integrated combustion device suitable for the incineration of high-salt organic waste water according to claim 1, characterized in that: the second air intake assembly further comprises an outer pipe (22), a cover plate (23) and an auxiliary air intake 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 the sealing plate away from the outer ring gun (17), the cover plate (23) ) is fixed on the other end of the outer pipe (22) and sleeved on the spray gun fixing pipe II (14) and is sealingly matched with the outer wall of the spray gun fixing pipe II (14), and the auxiliary air inlet pipe (20) is arranged on the outer pipe (22) Above, the auxiliary air intake pipe (20) communicates with the outer pipe (22), and one end of the inner ring gun (16) passes through the sealing plate and communicates with the outer pipe (22). 3. The integrated combustion device suitable for incineration of high-salt organic waste water according to claim 2, is characterized in that: the outer wall of the flared section (11) of the inner throat is evenly distributed with the number of outer ring guns (17). Equal and one-to-one corresponding outer ring gun brackets (25), the outer end of the outer ring gun (17) is fixed on the outer ring gun bracket (25); the other end of the central barrel (6) is provided with a circular ring close to the inner wall A type of cyclone baffle (26), the cyclone baffle (26) is uniformly provided with inner ring gun fixing holes equal in number to the inner ring guns (16) and corresponding one-to-one, the inner ring gun The outer end of (16) passes through the corresponding inner ring gun fixing hole; the air intake assembly 1 further includes an inner ring gun head (27) and an outer ring gun head (28); each of the inner ring guns (16) An inner ring gun head (27) is set on the outer end of each of the outer ring guns (17), an outer ring gun head (28) is set on the outer end of each outer ring gun (17), and the inner ring gun heads (27) and A plurality of air injection holes (29) are arranged on the outer wall of the gun head (28) of the outer ring. 4. The integrated combustion device suitable for incineration of high-salt organic waste water according to claim 3, characterized in that: a waste water spray gun fixing flange (30) is fixedly arranged on the spray gun fixing pipe II (14), and the waste water spray gun The spray gun rod of (34) is provided with a spray gun connecting flange (36), the spray gun connecting flange (36) is connected with the waste water spray gun fixing flange (30), and the outer port of the main air inlet pipe (19) is provided with a main Intake pipe flange (31). 5. The integral combustion device suitable for the incineration of high-salt organic wastewater according to any one of claims 1 to 4, wherein the atomizing nozzle (35) comprises a nozzle outer pipe (37), a nozzle An inner pipe (38) and an annular partition (39), one end of the nozzle outer pipe (37) is communicated with the air inlet pipe (40) of the waste water spray gun (34), and one end of the nozzle inner pipe (38) is connected to the waste water spray gun The liquid inlet pipe (41) of (34) is connected, the other end of the nozzle outer pipe (37) is shrunk and closed, the other end of the nozzle inner pipe (38) is shrunk and closed, the annular partition (39) It is arranged between the nozzle outer pipe (37) and the nozzle inner pipe (38) and is close to the closing mouth; the annular partition plate (39) is provided with gas injection holes (42) evenly distributed along its circumferential direction, and the nozzle inner pipe (38) Liquid spray holes (43) are evenly distributed on the wall of the closing mouth, and gas-liquid mixing spray holes (44) are evenly arranged on the wall of the nozzle outer pipe (37) near the closing mouth; the annular partition plate (39) ), a mixing cavity is formed between the nozzle outer pipe (37) near the constriction and the nozzle inner pipe (38) close to the constriction. 6. The integrated combustion device suitable for the incineration of high-salt organic waste water according to claim 4, characterized in that: a pressure regulating valve is provided 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 inlet flange (13) Pressure regulating valves are respectively set on the air pipes connected with the two air inlet passages.

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