CN116557877A - Oxygen-enriched incineration and heat recovery system for PTA waste residue liquid - Google Patents
Oxygen-enriched incineration and heat recovery system for PTA waste residue liquid Download PDFInfo
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- CN116557877A CN116557877A CN202310832937.4A CN202310832937A CN116557877A CN 116557877 A CN116557877 A CN 116557877A CN 202310832937 A CN202310832937 A CN 202310832937A CN 116557877 A CN116557877 A CN 116557877A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a dangerous waste incineration technical field, especially an oxygen-enriched incineration and heat recovery system of PTA waste residue liquid, oxygen-enriched combustion system includes the hierarchical combination formula oxygen-enriched burner of rifle, and wherein natural gas oxygen-enriched burner is located the center of furnace roof, and PTA waste residue liquid oxygen-enriched burner encircles the equipartition and is arranged in its periphery. The natural gas oxygen-enriched combustor comprises a natural gas spray gun, a first oxygen-enriched inner sleeve spray gun and a first oxygen-enriched outer ring spray gun from inside to outside. The PTA waste residue liquid oxygen-enriched burner comprises a PTA waste residue liquid spray gun, an atomizing medium spray gun, a second oxygen-enriched inner sleeve spray gun and a second oxygen-enriched outer ring spray gun from inside to outside. The first oxygen-enriched outer ring spray gun and the second oxygen-enriched outer ring spray gun are respectively and separately separated and independently controlled. The application adopts the oxygen-enriched incineration process, the equipment scale is reduced, the waste residue liquid is efficiently incinerated, the dependence on high-quality fuel can be reduced, the temperature of a combustion area is controllable, the burning loss of a furnace lining is prevented, the furnace type structure with heat insulation is matched, the temperature field in the incinerator is more uniform, and the system construction and operation cost is low.
Description
Technical Field
The application relates to the technical field of hazardous waste incineration, in particular to an oxygen-enriched incineration and heat recovery system for PTA waste residue liquid.
Background
The Purified Terephthalic Acid (PTA) is an important chemical raw material, and is mainly used for producing polyester fibers, polyester bottle flakes and polyester films, and is widely used in the industries of chemical fibers, light industry, electronics, buildings and the like. In the PTA production process, a large amount of waste liquid is generated, the waste liquid is evaporated and concentrated to form waste residue liquid with the solid content of 50% -70%, the waste residue liquid contains part of organic matters, sodium ions and bromine ions with higher concentration and a small amount of cobalt and manganese catalyst impurities, the ions have higher economic value, and if the waste residue liquid is directly discharged, not only is the waste of resources caused, but also serious environmental pollution is caused.
High-temperature incineration is one of the common hazardous waste treatment methods, the incineration method in the prior art generally adopts air as a combustion improver, and nitrogen accounting for 79% of the air cannot participate in combustion reaction, and can carry a large amount of heat to be discharged as flue gas, so that the combustion and heat utilization efficiency of the incineration device is low. Meanwhile, the heat value of the PTA waste residue liquid is relatively low, namely about 900KCal/Kg, and under the condition of proper excess air coefficient, the air incineration method is insufficient to reach the high temperature of more than 1100 ℃, and toxic and harmful substances cannot be thoroughly decomposed, so that the prior art needs to assist high-heat-value natural gas or fuel oil. However, this in turn results in high quality fuel consumption and further increases in operating costs. The combustion supporting of air requires a large amount of air, and a large amount of flue gas is generated by corresponding combustion, so that a huge incinerator, waste heat boiler system and flue gas purifying system are required to be configured. In order to reduce auxiliary fuel consumption, the waste heat recovery system is usually provided with a multi-stage air preheater, the air preheater has huge volume, complex smoke and air channels and large running resistance, the capacity and the electricity consumption of a matched drum and induced draft fan are also large, and the equipment investment, the capital construction installation and the running cost of the incineration device are high.
For example, applicant's prior invention patent publication No.: CN115371061B, name: the invention discloses a high-concentration salt-containing organic waste liquid incineration device and an incineration melting slag separation and recovery process, and the device disclosed by the invention is an integrated incinerator and a waste heat recovery boiler, wherein the incinerator comprises a water-cooling incineration furnace chamber which is surrounded by a membrane water-cooling wall and is divided into an upper section, a middle section and a lower section, a refractory plastic furnace lining with specific thickness is laid on the inner side of the membrane water-cooling wall, the upper part of the water-cooling incineration furnace chamber is provided with an incineration device, and secondary air and tertiary air are separated and slagging with high rotational flow intensity in a mode of combining staged combustion and combined combustion. The radiation cooling hearth of the waste heat recovery boiler is arranged side by side with the water-cooling incineration hearth and is communicated with the lower part, and a water-cooling slag condensing screen device, a quenching slag condensing section and a smoke folding wall are arranged in the radiation cooling hearth. Although the heat recovery efficiency of the invention is high and the service life is long, the manufacturing and running costs of the invention still have room for compression.
Disclosure of Invention
Aiming at the problems of huge system, high operation cost and the like of a PTA waste residue liquid air incineration process device in the prior art, the oxygen-enriched incineration method and system for PTA waste residue liquid provided by the application have the advantages of good waste residue liquid adaptability, good incineration effect, simple whole system, high heat recovery efficiency, long service life and capability of greatly reducing construction investment and operation cost.
The application provides an oxygen-enriched incineration and heat recovery system of PTA waste residue liquid, which comprises an oxygen-enriched combustion system and an adiabatic incinerator device, wherein the oxygen-enriched combustion system comprises a natural gas oxygen-enriched combustor 1 positioned at the center of the top of the adiabatic incinerator device and PTA waste residue liquid oxygen-enriched combustors 2 uniformly distributed around the periphery of the natural gas oxygen-enriched combustor; the center of the natural gas oxygen-enriched combustor 1 is provided with an inner nested natural gas spray gun 31 and a first oxygen-enriched inner sleeve spray gun 32, and first oxygen-enriched outer ring spray guns 33 are uniformly distributed around the center; the center of the PTA waste residue liquid oxygen-enriched burner 2 is provided with a PTA waste residue liquid spray gun 41, an atomization medium spray gun 42 and a second oxygen-enriched inner sleeve spray gun 43 which are nested inside and outside, and second oxygen-enriched outer ring spray guns 44 are uniformly distributed around the center; the plurality of first oxygen-enriched outer ring spray guns 33 on the periphery of the natural gas oxygen-enriched burner 1 and the plurality of second oxygen-enriched outer ring spray guns 44 on the periphery of the PTA waste residue liquid oxygen-enriched burner 2 are respectively and separately controlled in a spaced mode.
In particular, the natural gas oxygen-enriched burner 1 is vertically arranged at the center of the top of the heat insulation type incinerator device, the outlet of the PTA waste residue liquid oxygen-enriched burner 2 is arranged in a gathering way in the direction of the natural gas oxygen-enriched burner 1, and the installation angle alpha is 5-15 degrees.
In particular, the air flow rate in the natural gas spray gun 31 is 15-30 m/s; the air flow rate in the first oxygen-enriched inner sleeve spray gun 32 is 40-70 m/s; the air flow rate in the first oxygen-enriched outer ring spray gun 33 is 70-150 m/s.
In particular, the air flow rate in the second oxygen-enriched inner sleeve spray gun 43 is controlled to be 40-70 m/s; the air flow rate in the second oxygen-enriched outer ring spray gun 44 is controlled to be 50-100 m/s.
In particular, the first oxygen-enriched outer ring spray gun 33 at the periphery of the natural gas oxygen-enriched burner 1 and the second oxygen-enriched outer ring spray gun 44 at the periphery of the PTA waste residue liquid oxygen-enriched burner 2 are respectively separated into two groups at intervals and independently controlled, and when the waste residue liquid treatment capacity is less than 50% of design load, one group is closed.
Particularly, when the treatment capacity of the PTA waste residue liquid is 3-5 t/h, 1 natural gas oxygen-enriched burner 1 and 3 PTA waste residue liquid oxygen-enriched burners 2 are arranged; when the treatment capacity is 5-10 t/h, 1 natural gas oxygen-enriched burner 1 and 6 PTA waste residue liquid oxygen-enriched burners 2 are arranged; when the treatment capacity is 10-15 t/h, 1 natural gas oxygen-enriched burner 1 and 6-10 PTA waste residue liquid oxygen-enriched burner 2 are arranged.
In particular, the distribution radius R1 of the PTA waste residue liquid oxygen-enriched burner 2 is 300-800 mm, the distribution radius R2 of the first oxygen-enriched outer ring spray gun 33 in the natural gas oxygen-enriched burner 1 is 80-300 mm, and the distribution radius R3 of the second oxygen-enriched outer ring spray gun 44 in the PTA waste residue liquid burner 2 is 100-200 mm.
In particular, the heat-insulating incinerator device comprises an incinerator shell 3, wherein an incinerator liner 4 is arranged on the inner side of the incinerator shell 3, and an incinerator air jacket 5 is arranged on the outer side of the incinerator shell 3.
In particular, the thickness of the incinerator lining 4 is 350mm, and the incinerator lining is respectively 150mm refractory bricks, 100mm light insulating bricks, 99mm refractory ceramic fiber boards and 1mm anticorrosive paint layers from inside to outside.
Particularly, the heat recovery system comprises a waste heat boiler and a slag cooling device, wherein the waste heat boiler comprises a waste heat boiler hearth 7, a hearth slag condensing screen 8, a superheater 9, an evaporation screen 10 and a high-temperature economizer 11, the lower part of the waste heat boiler is connected with the lower part of the incinerator device through a connecting flue 6, the furnace bottom is inclined forward by 5-8 degrees, a downward jump step or an extended inclined plane form and the incinerator bottom jointly form a slag discharging pool furnace bottom, a furnace bottom water cooling wall is protected by adopting a deposition surfacing mode to prevent molten salt corrosion, a surfacing material is 316L heat-resistant alloy, and the deposition thickness is 2-2.5 mm.
On the basis of the common sense in the art, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the application.
The technical scheme has the following advantages or beneficial effects: (1) The method adopts an oxygen-enriched incineration process, is provided with a unique grading combined oxygen-enriched combustor, ensures that waste residue liquid is incinerated more thoroughly, more fully, more efficiently and more environmentally-friendly, and can also reduce or eliminate the dependence on high-quality natural gas fuel. (2) The staged multi-gun combustion can control the combustion temperature of the main combustion zone, and can prevent the problem of high-temperature burning loss of the lining of the furnace in the main combustion zone. (4) The amount of oxygen-enriched air and the amount of combustion smoke required during oxygen-enriched incineration are greatly reduced, the same waste residue liquid amount treatment target can be achieved by configuring smaller equipment and systems, and the equipment and construction investment and the operation cost of the device are greatly reduced. (5) The heat-insulating furnace structure avoids the problem of large heat transfer of the water-cooled wall type incinerator to the circulating working medium, so that the temperature field in the incinerator is more uniform, the temperature of the outlet furnace is easier to ensure, and the dependence on natural gas auxiliary heat preservation is eliminated. (6) The waste heat boiler solves the problems that slag is easy to form and ash is easy to block when high-salt PTA waste residue liquid is burnt through the arrangement of the large hearth, the slag condensing screen in the boiler and the large pitch plate type convection heating surface, ensures the long-period stable operation of the waste heat boiler, has the effects of large grabbing, small enlarging and small enlarging, and realizes the maximization of the heat recovery efficiency of the device. Of course, not all of the advantages described above are necessarily achieved at the same time by any one of the solutions of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be obvious to a person skilled in the art that other figures can be obtained from the figures provided without the inventive effort.
Fig. 1 is a schematic diagram of a PTA waste residue liquid oxygen-enriched incineration and heat recovery system according to an embodiment of the present application.
FIG. 2 is a schematic top view of a multi-gun staged combination oxy-fuel burner in accordance with an embodiment of the application.
FIG. 3 is a schematic front view of a natural gas oxy-fuel burner according to one embodiment of the application.
FIG. 4 is a schematic top view of a natural gas oxy-fuel burner according to one embodiment of the application.
Fig. 5 is a schematic front view of a PTA waste liquor oxy-fuel burner according to one embodiment of the application.
FIG. 6 is a schematic top view of a PTA spent liquor oxy-fuel combustor in accordance with one embodiment of the present application.
Wherein, 1-natural gas oxygen-enriched burner; 2-PTA waste residue liquid oxygen-enriched burner; 3-an incinerator housing; 4-incinerator lining; 5-incinerator air jacket; 6-connecting the flue; 7-a waste heat boiler furnace; 8-a hearth slag condensing screen; 9-superheater; 10-an evaporation screen; 11-high temperature economizer; 12-outlet flue; 13-a slag chute; 14-a double-shaft slag cooler; 15-a roller slag cooler; 16-a natural gas control valve; 17-a waste liquid control valve; 18-PTA waste liquid atomizing medium control valve; 19-an oxygen-enriched air control valve; 21-a first oxygen-enriched air opening and closing valve; 22-a second oxygen-enriched air opening and closing valve; 31-a natural gas lance; 32-a first oxygen-enriched inner sleeve spray gun; 33-a first oxygen-enriched outer ring lance; 34-a natural gas burner housing; 41-PTA waste residue liquid spray gun; 42-atomizing medium spray gun; 43-a second oxygen-enriched inner sleeve spray gun; 44-a second oxygen-enriched outer ring lance; 45-PTA waste residue liquid burner shell.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings of the present application. It is apparent that the described embodiments are only some of the embodiments of the present application and are intended to be used to explain the inventive concept. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
The terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like as used in the description are based on the orientation or positional relationship shown in the drawings and are merely for simplicity of description and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation.
The terms "first," "second," and the like, as used in the description, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The term "plurality" means two or more, unless specifically defined otherwise.
The terms "coupled," "connected," and the like as used in the description herein are to be construed broadly and may be, for example, fixedly coupled, detachably coupled, or integrally formed, unless otherwise specifically defined and limited; may be a mechanical connection, an electrical connection; can be directly connected and indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the terms in the embodiments can be understood by those of ordinary skill in the art according to the specific circumstances.
Unless expressly stated or limited otherwise, a first feature "above," "below," or "above" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" or "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. A first feature "under", "beneath" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "under", "beneath" or "under" a second feature may be a first feature being directly under or diagonally under the second feature, or simply indicating that the first feature is less level than the second feature.
The terms "one particular embodiment" and "one particular embodiment" as used in this description mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Referring to fig. 1 and 2, one embodiment of the present application proposes an oxygen-enriched incineration and heat recovery system for PTA waste residue liquid, which includes an oxygen-enriched combustion system, an adiabatic incinerator device, a waste heat boiler system, and a cold residue system. The oxygen-enriched combustion system comprises a multi-gun grading combined oxygen-enriched combustor and a pipe system and a control valve matched with the multi-gun grading combined oxygen-enriched combustor, the multi-gun grading combined oxygen-enriched combustor comprises a natural gas oxygen-enriched combustor 1 and a PTA waste residue liquid oxygen-enriched combustor 2, a natural gas control valve 16 is arranged in an auxiliary natural gas pipeline, a waste liquid control valve 17 is arranged in a PTA waste residue liquid pipeline, a PTA waste liquid atomizing medium control valve 18 is arranged in a PTA waste residue liquid atomizing medium pipeline, an oxygen-enriched air control valve 19 is arranged in an oxygen-enriched air pipeline, and a first oxygen-enriched air start-stop valve 21 and a second oxygen-enriched air start-stop valve 22 which are connected in parallel are arranged at the downstream of the oxygen-enriched air control valve 19. Under the assistance of natural gas, the oxygen-enriched combustion system coordinates to complete the high-efficiency incineration treatment of the waste residue liquid and controls the temperature of the combustion area of the adiabatic incinerator device to 1150-1250 ℃.
In the multi-gun hierarchical combined type oxygen-enriched combustor, the natural gas oxygen-enriched combustor 1 is arranged as a single one and is arranged in the center. The number of the PTA waste residue liquid oxygen-enriched combustors 2 is more than one, and the distribution radius R1 is uniformly distributed around the periphery of the natural gas oxygen-enriched combustors 1 according to the specific components and the heat value calculation of the PTA waste residue liquid. Preferably, 6 to 10 PTA waste residue liquid oxygen-enriched combustors 2 are selected. The outlet of the PTA waste residue liquid oxygen-enriched combustor 2 is gathered towards the direction of the natural gas oxygen-enriched combustor 1, and an angle alpha is formed between the outlet and the vertical direction, and the angle alpha is preferably 5-15 degrees.
Referring to fig. 1, 3 and 4, a specific embodiment of the present application proposes a natural gas oxygen-enriched burner 1 of an oxygen-enriched incineration and heat recovery system of PTA waste residue liquid, wherein the natural gas oxygen-enriched burner 1 comprises a natural gas spray gun 31, a first oxygen-enriched inner sleeve spray gun 32, a first oxygen-enriched outer ring spray gun 33 and a natural gas burner shell 34 from the center to the periphery. The natural gas oxygen-enriched burner 1 is also provided with auxiliary means, such as a burning torch, a flame detector and/or a protective tuyere, etc. The natural gas spray gun 31 is arranged in a single way and is arranged in the center of the natural gas oxygen-enriched combustor 1, and the air flow rate in the natural gas spray gun 31 is controlled to be 15-30 m/s. The outer tube of the natural gas spray gun 31 is wrapped and provided with a first oxygen-enriched inner sleeve spray gun 32, and the air flow speed in the first oxygen-enriched inner sleeve spray gun 32 is controlled to be 40-70 m/s. The first oxygen-enriched outer ring spray guns 33 are uniformly distributed around the peripheries of the natural gas spray guns 31 and the first oxygen-enriched inner sleeve spray guns 32 at intervals of 60 degrees with a distribution radius R2, the number of the first oxygen-enriched outer ring spray guns 33 is 6, and the air flow rate in the first oxygen-enriched outer ring spray guns 33 is controlled to be 70-150 m/s.
Referring to fig. 5 and 6, a specific embodiment of the present application proposes a single PTA waste liquid oxygen-enriched burner 2 of a PTA waste liquid oxygen-enriched incineration and heat recovery system, wherein the PTA waste liquid oxygen-enriched burner 2 comprises a PTA waste liquid spray gun 41, an atomizing medium spray gun 42, a second oxygen-enriched inner sleeve spray gun 43, a second oxygen-enriched outer ring spray gun 44 and a PTA waste liquid burner housing 45 from the center to the periphery. The PTA waste residue liquid oxygen-enriched burner 2 is also provided with auxiliary devices such as a protection tuyere and the like. The PTA waste liquid spray gun 41 is arranged in a single way and is arranged in the center of the PTA waste liquid oxygen-enriched combustor 2. An atomizing medium spray gun 42 and a second oxygen-enriched inner sleeve spray gun 43 are sequentially arranged outside the PTA waste residue liquid spray gun 41 in a wrapping way, and the air flow rate in the second oxygen-enriched inner sleeve spray gun 43 is controlled at 40-70 m/s. The second oxygen-enriched outer ring spray guns 44 are uniformly distributed around the periphery of the PTA waste residue liquid spray gun 41 at intervals of 60 degrees with a distribution radius R3, and the number of the second oxygen-enriched outer ring spray guns 44 is preferably 6, and the air flow rate of the second oxygen-enriched outer ring spray guns 44 is controlled to be 50-100 m/s.
Referring to fig. 1, a specific embodiment of the present application proposes an oxygen-enriched incineration and heat recovery system for PTA waste residue liquid, wherein 6 first oxygen-enriched outer ring spray guns 33 on the periphery of a natural gas oxygen-enriched burner 1 and 6 second oxygen-enriched outer ring spray guns 44 on the periphery of a PTA waste residue liquid oxygen-enriched burner 2 are separated into a 1 st group and a 2 nd group at intervals, one group is connected with a pipeline controlled by a first oxygen-enriched air on-off valve 21, and the other group is connected with a pipeline controlled by a second oxygen-enriched air on-off valve 22.
In actual operation, when the waste residue liquid treatment capacity fluctuates at 50% -110% load, the natural gas control valve 16, the waste liquid control valve 17, the PTA waste liquid atomization medium control valve 18 and the oxygen-enriched air control valve 19 are regulated to regulate the required oxygen-enriched amount and the auxiliary natural gas amount. When the actual load is less than 50% of the design load, the first oxygen-enriched air on-off valve 21 or the second oxygen-enriched air on-off valve 22 is closed, one group of the first oxygen-enriched outer ring spray guns 33 and the second oxygen-enriched outer ring spray guns 44 in the two groups are separated, and then the aim of large regulation ratio and compatibility of the multi-gun hierarchical combined type oxygen-enriched burner is achieved.
For treating different waste liquid amounts, preferably, 1 natural gas oxygen-enriched combustor 1 and 3 PTA waste liquid oxygen-enriched combustors 2 are arranged for PTA waste liquid with small treatment capacity of 3-5 t/h; setting 1 natural gas oxygen-enriched burner 1 and 6 PTA waste residue liquid oxygen-enriched burners 2 for 5-10 t/h medium-treatment-capacity PTA waste residue liquid; for large-treatment-capacity PTA waste residue liquid of 10-15 t/h and above, 1 natural gas oxygen-enriched combustor 1 and 6-10 PTA waste residue liquid oxygen-enriched combustors 2 are arranged.
The distribution radii R1, R2, R3 are also one of the key parameters of the present application. R1 is the distribution radius of the PTA waste residue liquid oxygen-enriched combustor 2, the numerical design of R1 is determined by combining the capacity and the space size of the incinerator, and the preferred value range is 300-800 mm, so that the fullness of combustion flame in a hearth can be ensured without sticking to the furnace wall, and the multi-gun classification flame is mutually supported without causing interference. R2 is the distribution radius of the first oxygen-enriched outer ring spray gun 33 in the natural gas oxygen-enriched combustor 1, and the preferable value range of R2 is 80-300 mm. R3 is the distribution radius of the second oxygen-enriched outer ring spray gun 44 in the PTA waste residue liquid burner 2, and the preferred value range of R3 is 100-200 mm. The numerical design of R2 and R3 is determined by repeated experiments by combining the component characteristics, the water content and the heat value characteristics of waste residue liquid so as to control the internal circulation multiplying power of the flue gas to be 1.3-1.6 and realize the medium temperature combustion and low nitrogen combustion.
In order to ensure the temperature of a high temperature area and the residence time of smoke in the incinerator and furthest reduce the consumption of natural gas, the vertical cylinder heat-insulating incinerator device is adopted. The incinerator device comprises an incinerator shell 3, an incinerator liner 4 is arranged on the inner side of the incinerator shell 3, an incinerator air jacket 5 is arranged on the outer side of the incinerator shell 3, the lower portion of the incinerator device is communicated with a connecting flue 6, and the bottom of the incinerator device is connected with a slag discharging device.
The top of the incinerator shell 3 is an ellipsoidal seal head, so that bricks can be hung conveniently, and a firm vault structure can be formed. The middle section of the incinerator device is a cylindrical furnace body, the lower part of the incinerator device is a connecting flue, the bottom of the incinerator device is a furnace bottom, and the furnace bottom is inclined forward by 3-5 degrees so as to facilitate flow convergence and discharge of molten slag. The front end of the furnace bottom is provided with a slag discharging port and a water-cooled slag chute 13, and slag is discharged and connected into a two-stage slag cooling device. The incinerator shell 3 is made of common carbon steel Q235B or low alloy steel Q355; in order to resist burning of the furnace shell by high-temperature flue gas in the furnace, a furnace lining material with the total thickness of 350mm is arranged in the furnace, and the furnace lining material is respectively provided with 150mm refractory bricks, 100mm light insulating bricks, 99mm refractory ceramic fiber boards and 1mm anticorrosive paint layers from inside to outside, so that the wall temperature of the incinerator shell 3 is controlled at 150-180 ℃ to prevent low-temperature dew point corrosion of the flue gas.
The PTA waste residue liquid contains sodium and bromide ions with higher concentrationAnd a small amount of cobalt and manganese catalyst residues and partial organic matters, and forms molten Na after high-temperature incineration 2 CO 3 NaBr mono-and mixed salts. Pure Na 2 CO 3 The NaBr melting point temperatures are 850 ℃ and 750 ℃ respectively, but the melting point temperatures are reduced to 600 ℃ to 700 ℃ in the mixed salt state. The liquid molten salt has strong corrosiveness to refractory materials and carbon steel, so that the chrome corundum brick with good corrosion resistance is selected as the working layer of the refractory lining, and Cr is strictly controlled 2 O 3 The content is not less than 12 percent.
Because the surface temperature of the incinerator shell is between 150 ℃ and 180 ℃, the incinerator air jacket 5 is arranged outside the incinerator shell 3 to reduce the heat loss and prevent personnel from being scalded, and the heat dissipated in the jacket is recovered by adopting a forced ventilation mode, so that the shell temperature of the incinerator air jacket 5 is kept below 60 ℃. Because the excess air coefficient control in the oxygen-enriched incinerator is lower, the exhaust gas oxygen content at the outlet of the device is lower than the standard requirement of 6% -15%, warm air pumped out by an air jacket can be doped into the exhaust gas adjusting device, and the exhaust gas temperature and the oxygen content are ensured to reach the standard for emission.
The heat recovery system comprises a waste heat boiler and a slag cooling device. The waste heat boiler comprises a waste heat boiler hearth 7, a hearth slag condensing screen 8, a superheater 9, an evaporation screen 10, a high-temperature economizer 11 and other heating surface structures. The heat recovery device of the waste heat boiler recovers more than 90 percent of heat. The waste heat boiler is connected with the lower part of the incinerator device through a connecting flue 6 at the lower part, the hearth is inclined forward by 5-8 degrees, a slag discharging pool hearth is formed by the lower jump step or the extended inclined plane form and the incinerator hearth together, the furnace hearth of the waste heat boiler is in a parameter state, the water-cooled wall of the hearth is protected by adopting a cladding surfacing mode, molten salt corrosion is prevented, the surfacing material is 316L heat-resistant alloy, and the cladding thickness of surfacing cladding is 2-2.5 mm.
The application adopts the oxygen-enriched combustion process, the waste heat boiler does not need to be matched with and replace the heating surface of the air preheater with weak heat capacity and huge volume, the flue gas and wind stroke is simplified, and the steel consumption of the tail heating surface is greatly reduced. Aiming at the characteristics of PTA waste residue liquid and incineration smoke, the waste heat furnace is designed into a large hearth and hearth slag condensing screen structure, and the heat load of the hearth volume is controlled at 220KW/m 3 The following ensures the outlet of the hearthThe smoke temperature is no more than 700 ℃, and the phenomenon that the low-melting-point alkaline residue is condensed on a convection heating surface in the subsequent stroke to cause slag bonding and corrosion is avoided. The convection heating surface is designed into a large-pitch plate type structure, the pitches of the superheater and the evaporation screen are more than 360mm, and the pitch of the high-temperature economizer is more than 150mm, so that dust accumulation and dust blockage are avoided. Through structural design and configuration of heating surfaces. The heat recovery system reduces the temperature of the high-temperature flue gas at 1100 ℃ at the inlet of the waste heat boiler to about 220 ℃ in the outlet flue 12, and then the flue gas can enter the SCR denitration reactor, a low-temperature economizer is arranged at the outlet of the SCR reactor to further recover the waste heat of the flue gas, the temperature of the flue gas is reduced to 135 ℃, the flue gas and the warm air pumped by the air jacket of the incinerator are mixed, oxygen and temperature are regulated, and the oxygen content of the flue gas is ensured to reach the emission standard within the range of 6% -15%.
The three-stage slag cooling device is provided with the water-cooled slag chute 13, the double-shaft slag cooler 14 and the roller slag cooler 15, the slag discharging temperature is reduced from 1100 ℃ to below 100 ℃, and the slag discharging heat loss is reduced by 0.5% from 6%. The circulating cooling water supplements desalted water for the waste heat boiler, the supplemented desalted water is connected in parallel in three paths and respectively enters a slag chute, a double-shaft slag cooler and a roller slag cooler, after the slag discharging waste heat is recovered, the recovered slag discharging waste heat is collected into a thermal deaerator, so that the consumption of deaerated steam is reduced, and the slag discharging heat recovery target is realized.
The principle explanation of the technical scheme of the application comprises the following steps: (1) Theoretical research and engineering practice show that the oxygen-enriched concentration is in the range of 23% -30%, the combustion temperature is more effective, when the oxygen concentration is more than 30%, the combustion temperature increasing speed is slowed down, and the brick lining structure of the incinerator is easily burnt by the excessively high oxygen concentration, so that the operation safety of the incinerator is endangered. Therefore, the application selects oxygen enrichment with 25 to 40 percent of the oxygen concentration of the combustion improver. The combustion condition of PTA waste residue liquid can be effectively improved by oxygen-enriched combustion, a black flame area at the root of flame is eliminated, and the waste residue liquid is burnt more thoroughly and more fully; the oxygen-enriched combustion can realize the substantial reduction of auxiliary natural gas fuel and even has negligible consumption; the oxygen-enriched combustion can reduce and simplify the system configuration of the incinerator, reduce the investment cost and improve the running stability, reliability and economy of the device.
The burner is provided with the waste residue liquid oxygen-enriched burner and the natural gas oxygen-enriched burner, and through unique structure and performance design, the waste residue liquid and the natural gas are rapidly ignited, the gas is supplied in a grading manner, the gas is burnt in a grading manner, the gas in the oxygen-enriched entrainment furnace forms the gas internal circulation, the flame core area is dispersed, the flame core temperature is reduced, the generation of NOx is restrained, and the efficient low-nitrogen combustion is realized. The oxygen-enriched source mode is flexible, and can be provided by utilizing the allowance blending of the existing air separation or PSA pressure swing adsorption oxygen generating device of a factory, and can also be independently provided by preparing oxygen-enriched equipment by a membrane method.
Taking a waste residue liquid incineration device with the capacity of 7t/h as an example, if oxygen enrichment with the concentration of 30% is used as a combustion improver, the required oxygen enrichment is about 11400Nm at the normal temperature of 30 ℃ of the combustion improver under the conditions that the temperature of a high temperature section of the incinerator is not less than 1100 ℃ and the retention time is not less than 2 3 And/h, the smoke amount generated by incineration is about 17300Nm 3 /h, auxiliary natural gas volume of about 160Nm 3 And/h, the diameter of the matched incinerator is 2.3m, and the capacity of the waste heat boiler is 12.5t/h. When the oxygen concentration is continuously increased to 38%, the use of auxiliary natural gas fuel can be completely eliminated, and the corresponding oxygen enrichment amount, the flue gas amount, the furnace diameter and the capacity of the waste heat boiler are reduced, and the specific parameters are compared with the following table.
From the above data, it is not difficult to find that the oxygen enrichment process can optimize the incineration effect, reduce the consumption of high-quality natural gas, greatly reduce the volume of the device and supporting facilities, reduce the construction and operation investment, and have good technical economy and market competitiveness.
(2) The incineration system is provided with a grading combined type combustor, the combined type combustor comprises a starting natural gas oxygen-enriched combustor and a waste residue liquid oxygen-enriched combustor, the natural gas oxygen-enriched combustor is arranged in the central area of the combined type combustor, the waste residue liquid oxygen-enriched combustor is arranged around the natural gas oxygen-enriched combustor in a surrounding mode, and the number of the waste residue liquid oxygen-enriched combustors is divided into a plurality of groups according to the waste residue liquid treatment capacity.
The natural gas oxygen-enriched burner is provided with a natural gas gun at the center, and an oxygen-enriched inner sleeve spray gun is wrapped outside the natural gas gun, so that the oxygen-enriched inner sleeve spray gun is provided with a high-speed direct current structure for enhancing the rapid and uniform mixing of the oxygen-enriched gas, and the flow rate of a nozzle is 40-70 m/s. A plurality of oxygen-enriched outer ring spray guns are circumferentially arranged outside the oxygen-enriched inner sleeve spray gun at a certain interval, so that the staged air supply and staged combustion of natural gas are realized; the oxygen-enriched outer ring spray gun is high-speed direct current jet flow, the flow speed of a spray nozzle is 70-150 m/s, a negative pressure backflow area is formed by the high-speed jet flow, the mixing of oxygen enriched air and fuel gas is enhanced, surrounding low-temperature flue gas is sucked to form flue gas internal circulation, the temperature of a flame center is reduced, and the generation of NOx is inhibited.
The center of the waste residue liquid oxygen-enriched burner is provided with a waste residue liquid spray gun, the outer of the waste residue liquid spray gun is wrapped with an atomization medium spray gun, the tail end of the atomization medium spray gun adopts a diameter-reducing structure so as to ensure atomization quality, and the waste residue liquid adopts steam or compressed air as an atomization medium; and wrapping an oxygen-enriched inner sleeve spray gun outside the atomizing medium spray gun, wherein the oxygen-enriched inner sleeve spray gun adopts a high-speed direct current mode, and the flow velocity of a nozzle is 40-70 m/s. A plurality of oxygen-enriched outer ring spray guns are arranged at a certain interval outside the oxygen-enriched inner sleeve spray guns to realize the graded air supply and graded combustion of waste residue liquid; the oxygen-enriched outer ring spray gun is high-speed direct current jet flow, the flow speed of a nozzle is 50-100 m/h, the high-speed jet flow forms a negative pressure backflow area, the mixing of oxygen enrichment and waste residue liquid mist is enhanced, surrounding low-temperature flue gas is sucked to form flue gas inner circulation, the temperature of a flame center is reduced, and the generation of NOx is inhibited.
(3) In order to ensure the temperature of a high temperature area and the residence time of smoke in the incinerator and furthest reduce the consumption of natural gas, the incinerator is in a vertical cylindrical adiabatic furnace mode. The incinerator is composed of an incinerator shell, an incinerator lining, an air cooling jacket, a connecting flue, a slag discharging device and the like. In order to resist the burning of the furnace shell by high-temperature flue gas in the furnace, a multi-layer structure comprising a fire-resistant layer, a light heat-insulating layer, a ceramic fiber board heat-insulating layer and an anticorrosive coating layer is arranged in the furnace, so that the metal wall temperature of the furnace shell is controlled to be 150-180 ℃ and the low-temperature dew point corrosion of the flue gas is prevented.
The PTA waste residue liquid contains sodium and bromide ions with higher concentration, a small amount of cobalt and manganese catalyst residues and partial organic matters, molten single salt and mixed salt are formed after high-temperature incineration, and the liquid molten salt has strong corrosiveness to refractory materials and carbon steel, so that the chrome corundum brick with good corrosion resistance is selected as a refractory lining working layer, and the chemical components and physical and chemical indexes of the chrome corundum brick are strictly controlled.
Because the surface temperature of the incinerator shell is between 150 ℃ and 180 ℃, an air jacket is arranged outside the incinerator shell to reduce the heat loss and prevent personnel from being scalded, and the heat loss in the jacket is recovered by adopting a forced ventilation mode, so that the temperature of the jacket shell is kept below 60 ℃.
(4) The heat recovery system comprises a waste heat boiler and a slag cooling device, wherein the waste heat boiler is a main heat recovery device, and heat recovery of more than 90% is completed. The waste heat furnace is connected with the lower part of the incinerator through a lower connecting flue, the bottom of the waste heat furnace is inclined forward by 5-8 degrees, and the waste heat furnace and the incinerator bottom form a slag discharging pool bottom together in a downward jump step or along an inclined plane.
The waste heat boiler comprises a waste heat boiler hearth, a hearth slag condensing screen, a superheater, an evaporation screen, a high-temperature economizer and other heating surfaces and auxiliary structures. As mentioned above, the application is an oxygen-enriched combustion process, the waste heat boiler does not need to be matched with and replace the heating surface of the air preheater with weak heat energy capacity and huge volume, the flue gas and wind stroke is simplified, and the steel consumption of the tail heating surface is greatly reduced. Aiming at the characteristics of PTA waste residue liquid and incineration flue gas, the waste heat furnace is designed into a large hearth and hearth slag condensing screen structure, the temperature of the hearth outlet flue gas is controlled below 700 ℃, and the condensation of low-melting-point alkaline residues on a convection heating surface in the subsequent stroke is avoided, so that slag bonding and corrosion are caused; the convection heating surface is designed into a large-pitch plate type structure, so that dust accumulation and dust blocking are avoided. Through the configuration of the heating surface, the waste heat boiler reduces the high-temperature flue gas with the inlet of 1100 ℃ to about 220 ℃ and enters the SCR denitration reactor, a low-temperature economizer is arranged at the outlet of the SCR reactor to further recycle the flue gas waste heat, the flue gas temperature is reduced to 135 ℃, the flue gas and the warm air pumped by an air jacket are mixed, oxygen and temperature are regulated, and the oxygen content of the flue gas is ensured to reach the emission standard within the range of 6% -15%.
The oxygen-enriched combustion process saves the consumption of natural gas, the comprehensive heat value of the fuel fed into the furnace is low, the deslagging heat loss share is increased, and if the part of heat is not recovered, higher deslagging heat loss can be caused. In view of the above, the three-stage slag cooling device of the water-cooling slag chute, the double-shaft slag cooler and the roller slag cooler is arranged, the slag discharging temperature is reduced from 1100 ℃ to below 100 ℃, and the slag discharging heat loss is reduced from 6% to 0.5%. The circulating cooling water supplements desalted water for the waste heat boiler, the supplemented desalted water is connected in parallel in three paths and respectively enters a slag chute, a double-shaft slag cooler and a roller slag cooler, after the slag discharging waste heat is recovered, the recovered slag discharging waste heat is collected into a thermal deaerator, so that the consumption of deaerated steam is reduced, and the slag discharging heat recovery target is realized.
While embodiments of the present application have been illustrated and described above, it will be appreciated that the above-described embodiments are exemplary and should not be construed as limiting the present application. Various changes and modifications may be made to the present application without departing from the spirit and scope of the application, and such changes and modifications fall within the scope of the application as hereinafter claimed.
Claims (10)
1. An oxygen-enriched incineration and heat recovery system for PTA waste residue liquid is characterized in that: the system comprises an oxygen-enriched combustion system and an adiabatic incinerator device, wherein the oxygen-enriched combustion system comprises a natural gas oxygen-enriched combustor (1) positioned at the center of the top of the adiabatic incinerator device and PTA waste residue liquid oxygen-enriched combustors (2) uniformly distributed around the periphery of the natural gas oxygen-enriched combustor; the center of the natural gas oxygen-enriched combustor (1) is provided with an inner nested natural gas spray gun (31) and an outer nested first oxygen-enriched inner sleeve spray gun (32), and first oxygen-enriched outer ring spray guns (33) are uniformly distributed around the center in a surrounding manner; the center of the PTA waste residue liquid oxygen-enriched burner (2) is provided with a PTA waste residue liquid spray gun (41), an atomization medium spray gun (42) and a second oxygen-enriched inner sleeve spray gun (43), and second oxygen-enriched outer ring spray guns (44) are uniformly distributed around the center in a surrounding manner; the plurality of first oxygen-enriched outer ring spray guns (33) at the periphery of the natural gas oxygen-enriched burner (1) and the plurality of second oxygen-enriched outer ring spray guns (44) at the periphery of the PTA waste residue liquid oxygen-enriched burner (2) are respectively and separately grouped and independently controlled.
2. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the natural gas oxygen-enriched burner (1) is vertically arranged at the center of the top of the heat insulation type incinerator device, the outlet of the PTA waste residue liquid oxygen-enriched burner (2) is arranged in a gathering way in the direction of the natural gas oxygen-enriched burner (1), and the installation angle alpha is 5-15 degrees.
3. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the flow rate of the gas in the natural gas spray gun (31) is 15-30 m/s; the air flow rate in the first oxygen-enriched inner sleeve spray gun (32) is 40-70 m/s; the air flow rate in the first oxygen-enriched outer ring spray gun (33) is 70-150 m/s.
4. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the air flow rate in the second oxygen-enriched inner sleeve spray gun (43) is controlled to be 40-70 m/s; the air flow rate in the second oxygen-enriched outer ring spray gun (44) is controlled to be 50-100 m/s.
5. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the first oxygen-enriched outer ring spray guns (33) at the periphery of the natural gas oxygen-enriched combustor (1) and the second oxygen-enriched outer ring spray guns (44) at the periphery of the PTA waste residue liquid oxygen-enriched combustor (2) are respectively separated into two groups at intervals and are independently controlled, and when the waste residue liquid treatment capacity is less than 50% of design load, one group is closed.
6. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: when the treatment capacity of the PTA waste residue liquid is 3-5 t/h, 1 natural gas oxygen-enriched burner (1) and 3 PTA waste residue liquid oxygen-enriched burners (2) are arranged; when the treatment capacity is 5-10 t/h, 1 natural gas oxygen-enriched burner (1) and 6 PTA waste residue liquid oxygen-enriched burners (2) are arranged; when the treatment capacity is 10-15 t/h, 1 natural gas oxygen-enriched burner (1) and 6-10 PTA waste residue liquid oxygen-enriched burners (2) are arranged.
7. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the value range of the distribution radius R1 of the PTA waste residue liquid oxygen-enriched burner (2) is 300-800 mm, the value range of the distribution radius R2 of the first oxygen-enriched outer ring spray gun (33) in the natural gas oxygen-enriched burner (1) is 80-300 mm, and the value range of the distribution radius R3 of the second oxygen-enriched outer ring spray gun (44) in the PTA waste residue liquid burner (2) is 100-200 mm.
8. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the heat-insulating incinerator device comprises an incinerator shell (3), wherein an incinerator lining (4) is arranged on the inner side of the incinerator shell (3), and an incinerator air jacket (5) is arranged on the outer side of the incinerator shell (3).
9. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 8, wherein: the thickness of the incinerator lining (4) is 350mm, and the incinerator lining is respectively 150mm refractory bricks, 100mm light insulating bricks, 99mm refractory ceramic fiber boards and 1mm anticorrosive paint layers from inside to outside.
10. The oxygen-enriched incineration and heat recovery system for PTA waste residue liquid according to claim 1, which is characterized in that: the heat recovery system comprises a waste heat boiler and a slag cooling device, wherein the waste heat boiler comprises a waste heat boiler hearth (7), a hearth slag condensing screen (8), a superheater (9), an evaporation screen (10) and a high-temperature economizer (11), the lower part of the waste heat boiler is connected with the lower part of the incinerator device through a connecting flue (6), the furnace bottom is inclined forward by 5-8 degrees, a step-down or inclined-surface-extending mode and the incinerator bottom jointly form a slag discharging pool furnace bottom, a furnace bottom water-cooling wall is protected by adopting a deposition surfacing mode, molten salt corrosion is prevented, a surfacing material is 316L heat-resistant alloy, and the surfacing deposition thickness is 2-2.5 mm.
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| CN214406091U (en) * | 2020-12-30 | 2021-10-15 | 武汉武锅能源工程有限公司 | Environment-friendly incineration boiler suitable for high-calorific-value dangerous waste liquid |
| CN114811616A (en) * | 2021-01-20 | 2022-07-29 | 洛阳瑞昌环境工程有限公司 | Burner, device and process for thermal oxidation incineration treatment of HCN-containing waste gas |
| CN214700737U (en) * | 2021-04-20 | 2021-11-12 | 北京联创鼎新石化设备有限公司 | Incineration boiler for treating waste liquid and waste gas containing salt |
| CN114110618A (en) * | 2021-11-08 | 2022-03-01 | 北京航化节能环保技术有限公司 | Combustion device for treating acrylonitrile wastewater |
| CN115371061A (en) * | 2022-10-26 | 2022-11-22 | 浙江百能科技有限公司 | High-concentration salt-containing organic waste liquid incineration device and incineration molten slag separation and recovery process |
| CN115682000A (en) * | 2022-11-08 | 2023-02-03 | 江苏中圣园科技股份有限公司 | Salt-containing organic waste liquid incinerator |
| CN218993423U (en) * | 2022-12-28 | 2023-05-09 | 南京博纳能源环保科技有限公司 | Incineration device and incineration system |
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