CN214249604U - Off-line incineration device for disposing hazardous waste in cooperation with cement kiln - Google Patents

Abstract

The utility model relates to a cement kiln deals with hazardous waste technical field in coordination, concretely relates to an off-line incineration device for cement kiln deals with hazardous waste in coordination, the induction cooker comprises a cooker bod, the top fixed mounting of furnace body has the jet throat, the top fixed mounting that the jet throat has the mixed combustion chamber, the top fixed mounting that mixes the combustion chamber has waste gas air-out pipeline, the inside of furnace body is provided with fluidized bed combustion chamber and stratiform combustion chamber, movable mounting has the regulation flashboard between fluidized bed combustion chamber and the stratiform combustion chamber, the bottom fixed mounting of fluidized bed combustion chamber has a tuber pipe. This an off-line incineration device for cement kiln deals with hazardous waste in coordination has overcome the drawback of burning the device on line, can burn the back material, carry out the off-line setting between the aspect of waste heat waste gas utilization and dore furnace, rotary kiln, has effectively reduced the interact between the two, has further improved efficiency and the effect that final cement kiln deals with in coordination.

Description

Off-line incineration device for disposing hazardous waste in cooperation with cement kiln

Technical Field

The utility model relates to a cement kiln deals with hazardous waste technical field in coordination, concretely relates to an off-line incineration device that is used for cement kiln to deal with hazardous waste in coordination.

Background

At present, most enterprises adopt a direct feeding disposal mode of adding a decomposing furnace without an incinerator, and a few enterprises adopt a special indirect feeding disposal mode of the incinerator, the technology of the incinerator can be divided into an off-line furnace and an on-line furnace, the on-line furnace technology is a pre-combustion and after-combustion type incinerator combined with the decomposing furnace of the cement kiln, the incinerator is used as a part of the decomposing furnace, the process connection of the incinerator and the decomposing furnace is tight, but the balance relation of the incinerator and the decomposing furnace is difficult to treat, so that the mutual influence condition still exists, the off-line furnace is a separately designed incinerator outside the decomposing furnace, the off-line incinerator is used for incinerating dangerous wastes, the decomposing furnace mainly completes the task of cement process carbonate decomposition, the operation of the incinerator and the decomposing furnace does not influence each other, only the smoke after the dangerous wastes are incinerated enters the decomposing furnace for further combustion, the mainstream offline burning technology in the market at present mainly comprises a gasification furnace burning technology, a fluidized bed burning technology, a grate furnace burning technology and the like, and has advantages in terms of the types of the furnaces, has respective application range to the treated and processed materials, has better effect on treating certain or several kinds of dangerous wastes by any one combustion technology, the products of the existing pretreatment process for the cooperative disposal of hazardous wastes by the cement kiln are difficult to meet and adapt, the addition and the transportation are often not appropriate, the addition-suitable means is few, the disposal quantity is low, the temperature in the furnace is too low or too high, the incineration is not thorough and the like, therefore, the incineration disposal work of hazardous wastes of different types, different particle sizes, different calorific values, different water contents and different forms cannot be thoroughly solved by adopting a simple combustion means, and the problem needs to be solved by adopting a composite combustion technology urgently.

The conventional pretreatment technology for cooperatively treating hazardous wastes by a cement kiln is not limited to an SMP (symmetric multi-processing) pretreatment technology, aims to integrate crushing, mixing and conveying into a whole, has high automation degree, low labor intensity and high safety and reliability, is low in health risk of personnel, is generally favored by the cement industry, but has low treatment rate due to the characteristics of technical equipment and process operation, has large influence on the kiln condition of the cement kiln when the pretreated pasty materials are combusted, is low in treatment table time, is generally directly sprayed into a decomposing furnace for combustion by semi-solid hazardous wastes, is mainly used for pretreating the solid hazardous wastes by crushing, screening and conveying into the decomposing furnace, liquid wastes are sprayed into the decomposing furnace by an atomizing spray gun, some dry sludge can directly enter the decomposing furnace for treatment, and the pretreated hazardous wastes are directly added into the decomposing furnace for combustion, the combustion space of the decomposing furnace is occupied, great influence is caused on cement calcination, and contradiction between the cement calcination and the cement calcination is aggravated, so that the off-line incineration device for the cement kiln to cooperatively dispose the hazardous waste is designed, and the off-line incineration device is urgently needed in the technical field of cooperative disposal of the hazardous waste by the cement kiln at present.

SUMMERY OF THE UTILITY MODEL

The utility model provides an off-line incineration device for cement kiln disposes hazardous waste in coordination to solve the problem that prior art exists.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to the embodiment of the utility model, an off-line burns device for cement kiln deals with hazardous waste in coordination, the induction cooker comprises a cooker bod, the top fixed mounting of furnace body has the jet throat, the top fixed mounting who spouts the throat has the mixed combustion chamber, the top fixed mounting who mixes the combustion chamber has waste gas air-out pipeline, the inside of furnace body is provided with fluidized bed combustion chamber and stratiform combustion chamber, movable mounting has the regulation flashboard between fluidized bed combustion chamber and the stratiform combustion chamber, the bottom fixed mounting of fluidized bed combustion chamber has a tuber pipe, and a tuber pipe extends the bottom fixedly connected with hybrid fan of furnace body, the inside bottom evenly distributed of fluidized bed combustion chamber has the fluidized bed distributing plate, one side of fluidized bed combustion chamber position department furnace body is from last to once fixed mounting has dry sludge pan feeding pipe, powder unloading pipe, the device comprises a secondary air pipe and a pulverized coal burner, wherein an adjustable material scattering box is embedded and installed at the bottom of a powder discharging pipe, the pulverized coal burner is fixedly installed at the bottom of the secondary air pipe, a wet sludge feeding port and a sludge conveying pipeline are fixedly installed on the front side of a furnace body at the position of a layered combustion chamber, a solid large particle feeding port is fixedly installed on one side of the furnace body at the position of the layered combustion chamber, an ash discharging hopper is fixedly installed at the bottom of the layered combustion chamber and extends out of the furnace body, an eccentric tower type furnace wall is arranged at the bottom inside the layered combustion chamber, a columnar dispersing feeder is fixedly installed at the top of the layered combustion chamber at the position between a spouting shrinkage port and the furnace body, an SMP slurry feeding port is fixedly installed on the side surface of the columnar dispersing feeder, and liquid feeding ports and observation processing ports are arranged on the front sides of a fluidized bed combustion chamber and the layered combustion chamber, and air cannons are fixedly arranged on two sides of the bottoms of the fluidized bed combustion chamber and the layered combustion chamber.

Furthermore, the adjusting gate plate adopts a water wall cooling mode, and refractory castable is built on two sides of the adjusting gate plate.

Furthermore, two groups of thermocouples are fixedly installed inside the mixed combustion chamber, a pressure gauge and an online gas analyzer are respectively and fixedly installed at an outlet of the mixed combustion chamber, and the pressure gauges are fixedly installed inside the fluidized bed combustion chamber and the layered combustion chamber.

Further, a pressure gauge and a thermometer are fixedly installed on the outer side of the secondary air pipe, and an ammeter, a flow meter and a pressure detection meter are fixedly installed on the outer side of the mixing fan.

Further, a manhole door and a poking hole are arranged on the outer side of the fluidized bed combustion chamber.

The utility model has the advantages of as follows:

1. the off-line incineration device for the cement kiln to cooperatively treat the hazardous waste overcomes the defects of an on-line incineration device, can be arranged off-line with the decomposing furnace and the rotary kiln in the aspect of utilization of incinerated materials and waste heat and waste gas, effectively reduces the mutual influence between the incinerated materials and the waste heat and waste gas, particularly reduces the influence of smoke and materials on the combustion state in the decomposing furnace, and further improves the efficiency and the effect of the final cement kiln to cooperatively treat the hazardous waste;

2. the off-line incineration device for the cement kiln to cooperatively treat the hazardous waste adopts two combustion modes, namely a fluidized bed combustion chamber and a layered combustion chamber, the two combustion modes can be organically combined, and are different from the traditional off-line combustion device;

3. this an off-line incineration device for cement kiln deals with hazardous waste in coordination has overcome cement kiln deals with hazardous waste multiple spot pan feeding in coordination, and the difficult problem is dealt with to the multistate material, is fit for present cement kiln to deal with hazardous waste in coordination mainstream preliminary treatment product, like semi-solid mud, SMP system paste material, dry sludge, powdery material, large granule solid state material and waste liquid etc. can effectively improve cement kiln and deal with the adaptability of hazardous waste to the material in coordination.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of the overall internal structure of the present invention;

in the figure: 1. a waste gas outlet pipeline; 2. a hybrid combustor; 3. spouting a necking; 4. feeding dry sludge into a pipe; 5. a liquid material inlet; 6. a powder blanking pipe; 7. the material scattering box can be adjusted; 8. a fluidized bed combustion chamber; 9. a secondary air duct; 10. a pulverized coal burner; 11. an air cannon; 12. a fluidized bed distribution plate; 13. a primary air duct; 14. a columnar dispersion feeder; 15. an SMP slurry material inlet; 16. a wet sludge feeding port; 17. a sludge conveying pipeline; 18. adjusting the gate plate; 19. a solid large particle feeding port; 20. a stratified combustion chamber; 21. observing the treatment port; 22. an eccentric tower furnace wall; 23. an ash discharging hopper; 24. a furnace body.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

The utility model provides a technical scheme:

an off-line incineration device for cooperatively treating hazardous wastes in a cement kiln comprises a furnace body 24, a spurting throat 3 is fixedly installed at the top of the furnace body 24, a mixed combustion chamber 2 is fixedly installed at the top of the spurting throat 3, the mixed combustion chamber 2 can fully combust incompletely combusted smoke, unburned carbon particles in the smoke and gasified combustible substances can be continuously combusted in the mixed combustion chamber 2 to accelerate mass and heat transfer, meanwhile, the temperature of the outlet smoke can be controlled to be above 900 ℃, some sludge type, paste type or liquid type wastes can be added into the smoke to avoid directly contacting with a fluidized bed layer and a flame bed layer to interfere combustion, a waste gas outlet pipeline 1 is fixedly installed at the top of the mixed combustion chamber 2, a fluidized bed combustion chamber 8 and a layered combustion chamber 20 are arranged in the furnace body 24, the fluidized bed combustion chamber 8 adopts an inverted cone structure, the layered combustion chamber 20 can control the flame bed layer with proper height, the combustion time of the materials on the flame bed is long, the combustion is stable, the burning is sufficient, the adaptability to solid materials and large-particle materials is strong, and the materials do not need to be finely processed, an adjusting flashboard 18 is movably arranged between a fluidized bed combustion chamber 8 and a layered combustion chamber 20, the fluidized bed combustion chamber 8 and the layered combustion chamber 20 are divided by a retaining wall, a gap is reserved in the middle of the retaining wall, the adjusting flashboard 18 can be ensured to stretch up and down, the adjusting flashboard 18 capable of stretching up and down to adjust the height of 1 meter is arranged at the upper part of the retaining wall, the adjusting flashboard 18 is used for adjusting the space control of the respective combustion chamber within a certain range, the water cooling mode is adopted by the adjusting flashboard 18, the water cooling two sides of the adjusting flashboard 18 are built with castable, the service life is prolonged, when the combustion speed of the materials in the layered combustion chamber is slow, or the material bed height needs to be properly increased, or the fluidized space height of the fluidized bed needs to be increased, and the wind shielding flashboard needs to be properly increased when the combustion temperature is low, otherwise, a primary air pipe 13 is fixedly arranged at the bottom of the fluidized bed combustion chamber 8, a mixing fan is fixedly connected at the bottom of the primary air pipe 13 extending out of the furnace body 24, fluidized bed distribution plates 12 are uniformly distributed at the bottom inside the fluidized bed combustion chamber 8, a dry sludge feeding pipe 4, a powder discharging pipe 6, a secondary air pipe 9 and a coal powder burner 10 are fixedly arranged at one side of the furnace body 24 at the position of the fluidized bed combustion chamber 8 from top to bottom, an adjustable material scattering box 7 is embedded at the bottom of the powder discharging pipe 6, the coal powder burner 10 is fixedly arranged at the bottom of the secondary air pipe 9, a wet sludge feeding port 16 and a sludge conveying pipeline 17 are fixedly arranged at the front of the furnace body 24 at the position of the layered combustion chamber 20, a solid large particle feeding port 19 is fixedly arranged at one side of the furnace body 24 at the position of the layered combustion chamber 20, and an ash discharging hopper 23 is fixedly arranged at the bottom of the layered combustion chamber 20, an ash discharging hopper 23 extends out of the furnace body 24, an eccentric tower furnace wall 22 is arranged at the bottom inside the layered combustion chamber 20, a columnar dispersing feeder 14 is fixedly installed at the top of the layered combustion chamber 20 at a position between the spouting shrinkage cavity 3 and the furnace body 24, an SMP slurry material feeding port 15 is fixedly installed on the side face of the columnar dispersing feeder 14, a liquid material feeding port 5 and an observation and disposal port 21 are arranged on the front faces of the fluidized bed combustion chamber 8 and the layered combustion chamber 20, air cannons 11 are fixedly installed on two sides of the bottoms of the fluidized bed combustion chamber 8 and the layered combustion chamber 20, the air cannons 11 can perform regular injection or emergency injection on the fluidized bed combustion chamber 8 and the layered combustion chamber 20, larger particulate materials inside the fluidized bed combustion chamber 8 can be blown into the layered combustion chamber 20, and the occurrence of the coking condition of the layered combustion chamber 20 can be reduced.

The utility model discloses in: the adjusting gate plate 18 adopts a water wall cooling mode, and refractory castable is built on two sides of the adjusting gate plate 18, so that the service life of the adjusting gate plate 18 can be effectively prolonged.

The utility model discloses in: two groups of thermocouples are fixedly arranged inside the mixed combustion chamber 2, a pressure gauge and an online gas analyzer are respectively and fixedly arranged at the outlet of the mixed combustion chamber 2, and the pressure gauges are fixedly arranged inside the fluidized bed combustion chamber 8 and the layered combustion chamber 20.

The utility model discloses in: the outer side of the secondary air pipe 9 is fixedly provided with a pressure gauge and a thermometer, and the outer side of the mixing fan is fixedly provided with an ammeter, a flow meter and a pressure detection meter.

The utility model discloses in: the outside of fluidized bed combustion chamber 8 is provided with the manhole door and disclose the material hole, makes things convenient for the staff to maintain the device wholly and clear away the slag charge in the stove.

The utility model discloses still include a technology:

after dry sludge and powdery materials in the fluidized bed combustion chamber 8 are fed through respective feeding ports for boiling combustion, particles are blown away and separated, are gradually gasified and decomposed, are continuously rolled in a fluidized area for up-and-down turning, are subjected to mass transfer, heat transfer and combustion, are then brought into the mixed combustion chamber 2 by air flow for further combustion and decomposition, waste of an SMP pretreatment system passes through a scattering device from the upper part of a spouting shrinkage port 3 and enters the mixed combustion chamber 2 after being dispersed and scattered, most of the materials move from top to bottom in the process of falling into a furnace bed to complete moisture evaporation, organic matter decomposition, gasification and combustion, finally fall into a stable hot material layer of the furnace bed for stable carbon particle combustion, and are finally collected as incineration residues after the final combustion is complete, and the residues finally enter a raw material mill through primary air cooling, storage and transfer to complete resource utilization, large solid particles are directly fed into a material bed of a layered combustion chamber 20 to play a role in stabilizing the material bed and the material layer, liquid wastes and wet sludge are directly fed into a mixed combustion chamber 2 to be rapidly dispersed, gasified and combusted, large flame-retardant materials in a fluidized bed combustion chamber 8 enter the layered combustion chamber 20 to be combusted through the auxiliary action of an adjusting flashboard 18 and an air cannon 11, wherein the pulverized coal combustion supporting of the fluidized bed combustion chamber 8 can be started and stopped according to the combustion condition and the heat value condition of the treated materials, other materials can be properly adjusted and selected from feeding ports suitable for the states of conveying, feeding and combustion according to the characteristics of hazardous wastes to feed, a small amount of waste chemical reagents can be fed into the layered combustion chamber 20 to be treated through a temporary feeding port, and flue gas combusted in each combustion chamber of an off-line incineration device enters the mixed combustion chamber 2 to be mixed and continuously combusted, the jet-transpiration necking 3 plays a jet-transpiration role in airflow, so that gas combustion and solid particle reaction are further strengthened, the flue gas enters the decomposing furnace through the waste gas outlet pipeline 1, flue gas combustion decomposition and harmful substance removal are further completed, the flue gas pipeline and the decomposing furnace are connected through extension, the flue gas residence time is prolonged, the effect of a secondary combustion chamber can be completely realized, and finally flue gas desulfurization and denitration are discharged through the unique smoke outlet of a cement plant.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (5)

1. An off-line incineration device for cement kiln co-disposal of hazardous waste, comprising a furnace body (24), characterized in that: the top fixed mounting of furnace body (24) has spouting throat (3), the top fixed mounting of spouting throat (3) has mixed combustion chamber (2), the top fixed mounting of mixed combustion chamber (2) has waste gas air-out pipeline (1), the inside of furnace body (24) is provided with fluidized bed combustion chamber (8) and stratiform combustion chamber (20), movable mounting has between fluidized bed combustion chamber (8) and stratiform combustion chamber (20) and adjusts flashboard (18), the bottom fixed mounting of fluidized bed combustion chamber (8) has primary air pipe (13), and primary air pipe (13) extend the bottom fixedly connected with hybrid fan of furnace body (24), the inside bottom evenly distributed of fluidized bed combustion chamber (8) has fluidized bed distributing plate (12), one side from last to once fixed mounting of fluidized bed combustion chamber (8) position department furnace body (24) has dry sludge pan feeding pipe (4), The device comprises a powder blanking pipe (6), a secondary air pipe (9) and a pulverized coal burner (10), wherein an adjustable scattering box (7) is embedded at the bottom of the powder blanking pipe (6), the pulverized coal burner (10) is fixedly installed at the bottom of the secondary air pipe (9), a wet sludge feeding port (16) and a sludge conveying pipeline (17) are fixedly installed on the front surface of a furnace body (24) at the position of a layered combustion chamber (20), a solid large particle feeding port (19) is fixedly installed on one side of the furnace body (24) at the position of the layered combustion chamber (20), an ash discharging hopper (23) is fixedly installed at the bottom of the layered combustion chamber (20), the ash discharging hopper (23) extends out of the furnace body (24), an eccentric tower-type furnace wall (22) is arranged at the bottom inside the layered combustion chamber (20), and a dispersed columnar feeding machine (14) is fixedly installed at the top of the layered combustion chamber (20) at the position between a spouting shrinkage port (3) and the furnace body (24), an SMP slurry material feeding port (15) is fixedly arranged on the side face of the columnar dispersion feeding machine (14), a liquid material feeding port (5) and an observation processing port (21) are arranged on the front faces of the fluidized bed combustion chamber (8) and the layered combustion chamber (20), and air guns (11) are fixedly arranged on two sides of the bottoms of the fluidized bed combustion chamber (8) and the layered combustion chamber (20).

2. The off-line incineration device for the cement kiln co-disposal of hazardous waste according to claim 1, characterized in that: the adjusting gate plate (18) adopts a water wall cooling mode, and refractory castable is laid on two sides of the adjusting gate plate (18).

3. The off-line incineration device for the cement kiln co-disposal of hazardous waste according to claim 1, characterized in that: two groups of thermocouples are fixedly installed inside the mixed combustion chamber (2), a pressure gauge and an online gas analyzer are respectively and fixedly installed at an outlet of the mixed combustion chamber (2), and the pressure gauges are fixedly installed inside the fluidized bed combustion chamber (8) and the layered combustion chamber (20).

4. The off-line incineration device for the cement kiln co-disposal of hazardous waste according to claim 1, characterized in that: and a pressure gauge and a thermometer are fixedly installed on the outer side of the secondary air pipe (9), and an ammeter, a flow meter and a pressure detection meter are fixedly installed on the outer side of the mixing fan.

5. The off-line incineration device for the cement kiln co-disposal of hazardous waste according to claim 1, characterized in that: and a manhole door and a poking hole are arranged on the outer side of the fluidized bed combustion chamber (8).

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