CN205746937U - A kind of flying dust watery fusion device - Google Patents

A kind of flying dust watery fusion device Download PDF

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Publication number
CN205746937U
CN205746937U CN201620582653.XU CN201620582653U CN205746937U CN 205746937 U CN205746937 U CN 205746937U CN 201620582653 U CN201620582653 U CN 201620582653U CN 205746937 U CN205746937 U CN 205746937U
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China
Prior art keywords
flying dust
rotary kiln
watery fusion
feed hopper
fusion device
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CN201620582653.XU
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Chinese (zh)
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张汉威
宗达
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Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
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Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
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Abstract

This utility model relates to a kind of flying dust watery fusion device.Described device includes: flying dust feed hopper, rotary kiln and condenser;Wherein, described flying dust feed hopper is respectively communicated with flying dust outlet and the flying dust entrance of described rotary kiln of described garbage burning boiler;The smoke inlet of described rotary kiln connects with the exhanst gas outlet of described garbage burning boiler;The exhanst gas outlet of described rotary kiln connects with described condenser.Device described in the utility model has the advantage that reduction fusing fly ash temperature, the volatilization of heavy metal and salts substances can be reduced, make fusing system simplify, reduce operation energy consumption simultaneously, then it is expected to reduce the cost that fusing fly ash processes, makes fusing system be more widely used.

Description

A kind of flying dust watery fusion device
Technical field
This utility model belongs to dangerous solid waste treating technology, relates to field of waste incineration, and specifically, this practicality is new Type relates to a kind of flying dust watery fusion device.
Background technology
Flying dust is the inevitable outcome of waste incineration, constitutes about the 3~5% of the amount of burning away the refuse.In flying ash of garbage cremator, Based on inorganic matter, next to that have the heavy metal element of higher leaching rate, such as pb, Cr, Cd etc., also some absorption exists Two English of flying dust, if the most preprocessed direct landfill, it will make heavy metal leach, migrate, soil and subsoil water are made Become secondary pollution.Therefore, process incineration of refuse flyash the most rationally and effectively and become current environment protection urgent problem. The most safely and effectively dispose flying ash and become the environment and social problem being badly in need of solving.
Incineration of refuse flyash treatment technology mainly have directly by sanitary landfills after the useless landfill of danger, chelating stabilisation, melted and Recycling four kinds.After flying dust chelating stabilisation, sanitary landfills is relatively broad in China's application.At present, China is economically developedly District's flying dust mainly by transporting security landfill field landfill after simply and easy treat to, occupies the storage capacity of security landfill field the most in a large number, and Cost is high.And some are underdeveloped, do not have an area of Condition Construction security landfill field, general employing is stored up or simple cement is solid Transport the mode of refuse landfill landfill after change to, there is the hidden danger of secondary pollution.
Fusing fly ash technology is exactly to be converted into glassy state slag by melted for harmful flying ash, reaches volume reduction, harmless A kind of recycling treatment process changed.After melt process, flying dust slag forms amorphous glass state material with rigidity, Glassy state slag makes heavy metal in flying dust form the form being difficult to leach, and is found by toxicity leaching characteristic experimental result, with much money Belong to leaching rate the lowest.
It addition, by melt process, two English of 99.9% in decomposable asymmetric choice net flying dust, thus two English classes can be effectively prevented It is discharged in environment.But there is also some shortcomings, as produced under hot conditions containing the volatile heavy metal such as Pb, Zn, Cd Waste gas, need to arrange follow-up flue gas processing device;Complex process;Energy resource consumption is big, processing cost is high.Recycling includes flying dust Sintering lightweight aggregate treatment technology and fly ash cement kiln disposal technology altogether, it can realize the harmless treatment of incineration of refuse flyash simultaneously With recycling, but this process receive market factors impact huge, the heavy metal of resource product is in long-time stability also Poor.
Existing high-temperature fusion processes flying dust technique and there is problems in that the heavy metal that (1) high temperature easily causes in flying dust Volatilizing with sour gas, need to increase exhaust treatment system and process, the Organic substance in (2) flying dust volatilizees under the high temperature conditions, Need to increase secondary combustion chamber and carry out after-flame, which results in the complication of system.(3) high-temperature fusion needs flying dust is heated to 1200 DEG C-1400 DEG C, the material of equipment is required height, and melt temperature to be heated to needs to spend substantial amounts of fuel and power cost.
Therefore, process incineration of refuse flyash the most rationally and effectively and become current environment protection urgent problem.
Utility model content
Introducing the concept of a series of reduced form in utility model content part, this will be in detailed description of the invention part Middle further description.Utility model content part of the present utility model is not meant to attempt to limit claimed The key feature of technical scheme and essential features, more do not mean that the guarantor attempting to determine technical scheme required for protection Protect scope.
This utility model provides a kind of flying dust watery fusion device, for processing the flying dust of garbage burning boiler, described Device includes: flying dust feed hopper, rotary kiln and condenser;
Wherein, described flying dust feed hopper is respectively communicated with the flying dust outlet of described garbage burning boiler and flying of described rotary kiln Ash entrance;
The smoke inlet of described rotary kiln connects with the exhanst gas outlet of described garbage burning boiler;
The exhanst gas outlet of described rotary kiln connects with described condenser.
Alternatively, the exhanst gas outlet of described rotary kiln is arranged at described rotary kiln near one end of described flying dust feed hopper Top.
Alternatively, described device also includes discharge valve, described rotary kiln away from one end of described flying dust feed hopper with described Discharge valve connects.
Alternatively, described discharge valve includes Starlike valve.
Alternatively, the exhanst gas outlet of described condenser connects with the flue gas processing device of described garbage burning boiler.
Alternatively, described flying dust feed hopper is provided above push-pull valve.
Alternatively, described flying dust feed hopper is provided with screw conveyor.
The operation of flying dust watery fusion device of the present utility model includes:
The flying dust that described garbage burning boiler produces is passed in described rotary kiln;
The flue gas of described garbage burning boiler is passed in described rotary kiln, utilizes described flue gas that described flying dust is added Heat, to realize the watery fusion of described flying dust;
Flue gas after watery fusion is passed through in described condenser, to remove the metal in described flue gas.
Alternatively, the temperature of described watery fusion is 400-500 DEG C.
Alternatively, the time of described watery fusion is more than 10min.
Alternatively, the step that flying dust after watery fusion in described rotary kiln is discharged by described operation the most further.
Alternatively, described flying dust includes the calcium hydroxide that mass fraction is 10%-15%.
Alternatively, described rotary kiln includes reducing atmosphere.
Alternatively, described rotary kiln contains the oxygen of at least 5%.
This utility model is in order to solve problems of the prior art, it is provided that a kind of flying dust watery fusion processes dress Putting, described device sends into rotary kiln by pressure feeding spiral after being collected by cleaner unit by the flying dust that waste incineration produces, and utilizes rubbish The high-temperature flue gas that rubbish burning boiler produces carries out watery fusion to flying dust, the waste gas of generation hydrargyrum in condensation removes tail gas, Tail gas after purification returns to flue gas of refuse burning processing system and processes, and after fusing fly ash processes, can be substantially reduced the analysis of heavy metal Go out.
Device described in the utility model has the advantage that reduction fusing fly ash temperature, it is possible to reduce heavy metal and salt The volatilization of material, makes fusing system simplify, and reduces operation energy consumption simultaneously, then be expected to reduce the cost that fusing fly ash processes, make to melt Melt system to be more widely used.
Accompanying drawing explanation
Drawings below of the present utility model is used for understanding this utility model in this as a part of the present utility model.Accompanying drawing In show embodiment of the present utility model and description thereof, be used for explain device of the present utility model and principle.In the accompanying drawings,
Fig. 1 is the connection diagram of flying dust watery fusion device described in the utility model;
Fig. 2 is the structural representation of flying dust watery fusion device described in the utility model.
Accompanying drawing identifies
1, flying dust feed hopper 2, rotary kiln
3, discharge valve 4, condenser
11, flying dust outlet 12, the smoke inlet of rotary kiln after processing
13, the exhanst gas outlet 14 of rotary kiln, flying dust entrance
Detailed description of the invention
In the following description, a large amount of concrete details is given to provide and this utility model being managed the most thoroughly Solve.It is, however, obvious to a person skilled in the art that this utility model can these be thin without one or more Save and be carried out.In other example, in order to avoid obscuring with this utility model, for more well known in the art Technical characteristic is not described.
In order to thoroughly understand this utility model, detailed step will be proposed in following description, in order to explain this practicality The flying dust watery fusion device of novel proposition.Obviously, execution of the present utility model is not limited to those skilled in the art institute The specific details being familiar with.Preferred embodiment of the present utility model is described in detail as follows, but in addition to these describe in detail, this reality Other embodiments can also be had with novel.
It should be appreciated that when using term " to comprise " in this manual and/or time " including ", it indicates that existence is described Feature, entirety, step, operation, element and/or assembly, but do not preclude the presence or addition of other features one or more, entirety, Step, operation, element, assembly and/or combinations thereof.
Embodiment 1
This utility model is in order to solve problems of the prior art, it is provided that a kind of flying dust watery fusion device, institute State flying dust watery fusion device and include flying dust feed hopper 1, rotary kiln 2, discharge valve 3 and condenser 4, as shown in Figure 1.
Wherein, described flying dust feed hopper 1 is respectively communicated with flying dust outlet and the flying dust entrance of rotary kiln of garbage burning boiler 12, it is transferred in described rotary kiln for by the flying dust that garbage burning boiler produces, the flying dust of the most described flying dust feed hopper Entrance 14 and the flying dust outlet of garbage burning boiler, the outlet of described flying dust feed hopper and the flying dust import of described rotary kiln 12 connections;
The smoke inlet 12 of described rotary kiln and the combustion product gases outlet of described garbage burning boiler, for by institute State the high-temperature flue gas that garbage burning boiler produces to be incorporated in described rotary kiln described flying dust is heated, it is achieved described flying dust Watery fusion;
The exhanst gas outlet 13 of described rotary kiln connects with described condenser, cools down for flue gas after processing, goes Except the metal included in described flue gas.
Wherein, the exhanst gas outlet of described rotary kiln is arranged at the described rotary kiln top near one end of described flying dust feed hopper Portion, connects with the smoke inlet of described condenser.
Wherein, described device also includes discharge valve, and described rotary kiln unloads with described away from one end of described flying dust feed hopper Material valve connection, after the process of described discharge valve, described flying dust is discharged rotary kiln by flying dust outlet 11.
Wherein, described discharge valve includes Starlike valve.
Wherein, described condenser connects with the flue gas processing device of described garbage burning boiler, the most described condenser Exhanst gas outlet connects with the flue gas processing device of described garbage burning boiler.
Wherein, described flying dust feed hopper is provided above push-pull valve.
Wherein, described flying dust feed hopper is provided with screw conveyor.
The operation principle of described flying dust watery fusion device is: described flying dust enters a flying dust feed hopper from chute, enters A push-pull valve is had to control the flow that flying dust enters above hopper.Flying dust passes through the helical feed of a variable speed from feed hopper Equipment delivers to a direct-fired rotary kiln, and the dosage of flying dust is adjusted by the rotating speed of helical feed and the gradient of rotary kiln Joint.Flue gas after process enters condenser, is extracted by condensation by the hydrargyrum in flue gas.Extract the flue gas after hydrargyrum and enter waste incineration The smoke processing system of system.Flying dust after process is discharged by afterbody Starlike valve, to prevent gas from leaking.Flying dust after Rong Rong Product property is stable, no matter does not the most have heavy metal under acid-base condition and separates out.
This utility model is in order to solve problems of the prior art, it is provided that a kind of flying dust watery fusion processes dress Putting, described device sends into rotary kiln by pressure feeding spiral after being collected by cleaner unit by the flying dust that waste incineration produces, and utilizes rubbish The high-temperature flue gas that rubbish burning boiler produces carries out watery fusion to flying dust, the waste gas of generation hydrargyrum in condensation removes tail gas, Tail gas after purification returns to flue gas of refuse burning processing system and processes, and after fusing fly ash processes, can be substantially reduced the analysis of heavy metal Go out.
Device described in the utility model has the advantage that reduction fusing fly ash temperature, it is possible to reduce heavy metal and salt The volatilization of material, makes fusing system simplify, and reduces operation energy consumption simultaneously, then be expected to reduce the cost that fusing fly ash processes, make to melt Melt system to be more widely used.
Embodiment 2
In this utility model, the running of flying dust watery fusion device includes:
The flying dust that garbage burning boiler produces is passed in rotary kiln;
Flue gas after being burnt by garbage burning boiler is passed in described rotary kiln, is added described flying dust by described flue gas Heat, to carry out watery fusion to described flying dust;
Flue gas after watery fusion is passed through in condenser the metal removed in described flue gas.
Wherein, flying dust after watery fusion in described rotary kiln is discharged by described technique the most further.
Wherein, the temperature of described watery fusion is 400-500 DEG C, compared to the temperature 1200 of high-temperature fusion in current technique For DEG C-1400 DEG C, the temperature of watery fusion reduces greatly, requires to reduce to the material of equipment, it is possible to reduce heavy metal and The volatilization of salts substances, makes fusing system simplify, and reduces operation energy consumption simultaneously, then be expected to reduce the cost that fusing fly ash processes, Fusing system is made to be more widely used.
Wherein, the time of described watery fusion is more than 10min.
Wherein, described flying dust includes the calcium hydroxide that mass fraction is 10-15.
Wherein, described rotary kiln includes reducing atmosphere, contains the oxygen of at least 5% in the most described rotary kiln.
This utility model is in order to solve problems of the prior art, it is provided that a kind of flying dust watery fusion processes dress Putting, described device sends into rotary kiln by pressure feeding spiral after being collected by cleaner unit by the flying dust that waste incineration produces, and utilizes rubbish The high-temperature flue gas that rubbish burning boiler produces carries out watery fusion to flying dust, the waste gas of generation hydrargyrum in condensation removes tail gas, Tail gas after purification returns to flue gas of refuse burning processing system and processes, and after fusing fly ash processes, can be substantially reduced the analysis of heavy metal Go out.
Device described in the utility model has the advantage that reduction fusing fly ash temperature, it is possible to reduce heavy metal and salt The volatilization of material, makes fusing system simplify, and reduces operation energy consumption simultaneously, then be expected to reduce the cost that fusing fly ash processes, make to melt Melt system to be more widely used.
This utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is simply For citing and descriptive purpose, and it is not intended to be limited in described scope of embodiments this utility model.In addition ability Field technique personnel are it is understood that this utility model is not limited to above-described embodiment, according to teaching of the present utility model also More kinds of variants and modifications can be made, these variants and modifications all fall within this utility model scope required for protection with In.Protection domain of the present utility model is defined by the appended claims and equivalent scope thereof.

Claims (7)

1. a flying dust watery fusion device, for processing the flying dust of garbage burning boiler, it is characterised in that described device bag Include: flying dust feed hopper, rotary kiln and condenser;
Wherein, the flying dust of flying dust outlet and described rotary kiln that described flying dust feed hopper is respectively communicated with described garbage burning boiler enters Mouthful;
The smoke inlet of described rotary kiln connects with the exhanst gas outlet of described garbage burning boiler;
The exhanst gas outlet of described rotary kiln connects with described condenser.
Flying dust watery fusion device the most according to claim 1, it is characterised in that the exhanst gas outlet of described rotary kiln is arranged In described rotary kiln near the top of one end of described flying dust feed hopper.
Flying dust watery fusion device the most according to claim 1, it is characterised in that described device also includes discharge valve, institute State rotary kiln to connect with described discharge valve away from one end of described flying dust feed hopper.
Flying dust watery fusion device the most according to claim 3, it is characterised in that described discharge valve includes Starlike valve.
Flying dust watery fusion device the most according to claim 1, it is characterised in that the exhanst gas outlet of described condenser and institute State the flue gas processing device connection of garbage burning boiler.
Flying dust watery fusion device the most according to claim 1, it is characterised in that described flying dust feed hopper is provided above Push-pull valve.
Flying dust watery fusion device the most according to claim 1, it is characterised in that be provided with spiral shell on described flying dust feed hopper Rotation conveying equipment.
CN201620582653.XU 2016-06-16 2016-06-16 A kind of flying dust watery fusion device Active CN205746937U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620582653.XU CN205746937U (en) 2016-06-16 2016-06-16 A kind of flying dust watery fusion device

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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910124A (en) * 2016-06-16 2016-08-31 光大环保技术研究院(深圳)有限公司 Fly ash low-temperature melting device and method
CN106895412A (en) * 2017-04-20 2017-06-27 金圆水泥股份有限公司 A kind of method of utilization cement kiln two-part disposal of solid castoff burning flying dust

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910124A (en) * 2016-06-16 2016-08-31 光大环保技术研究院(深圳)有限公司 Fly ash low-temperature melting device and method
CN105910124B (en) * 2016-06-16 2018-03-20 光大环保技术研究院(深圳)有限公司 A kind of flying dust watery fusion device and method
CN106895412A (en) * 2017-04-20 2017-06-27 金圆水泥股份有限公司 A kind of method of utilization cement kiln two-part disposal of solid castoff burning flying dust
CN106895412B (en) * 2017-04-20 2018-10-23 金圆水泥股份有限公司 A method of utilizing cement kiln two-part disposal of solid castoff burning flying dust

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