CN205443075U

CN205443075U - Flying dust washing material loading mixing system

Info

Publication number: CN205443075U
Application number: CN201520959194.8U
Authority: CN
Inventors: 许群仆
Original assignee: Beijing Jiandu Design & Research Institute Co Ltd
Current assignee: Beijing Jiandu Design & Research Institute Co Ltd
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2016-08-10
Anticipated expiration: 2025-11-27

Abstract

The utility model provides a flying dust washing material loading mixing system, mainly by electronic promotion calabash (1), flying dust ton bag (2), the material loading part is constituteed in single screwed pipe feeding machine (3), homogeneity agitator tank (4), anticorrosive centrifugal sludge pump (5), buffer tank (6), pipeline valve gate group (7) constitutes the homogeneity stirs and the buffer memory part, the utility model discloses a containing to incineration fly ash and burning till harmful material to the cement kiln, new technology to getting into incineration fly ash preliminary treatment - flying dust washing that the cement kiln dealt with in coordination provides a material loading, stirring homogeneity and delays the system that stores, its simple structure, adopts the material ordinary, and the operation is reliable, has fine economic nature, and social.

Description

Flying dust washing feeding stirring system

Technical field

This utility model relates to the feeding of pretreatment-flying dust washing step that a kind of cement kiln synergic processing flying ash is disposed, stirring homogenizing and the slow system stored, and belongs to environment protection equipment field.

Background technology

Flying ash refers to residue obtained by collection in the flue gas purification system (APC) of refuse (being primarily referred to as rubbish) incineration plant, generally comprises cleaner unit flying dust and absorption tower flying dust or scrubbing tower sewage sludge.Containing flue dust, the chemical agent of addition and chemical reaction product in flying ash.Flying ash is as a kind of high-specific surface area material, its not only toxic heavy metal such as the hydrargyrum of enriched, lead and cadmium, and it is enriched substantial amounts of dioxin-like chemical, it is a kind of extra quality hazardous waste with Heavy Metal Pollution characteristic and environmental persistence organic toxicity non-hazardous characteristic, health and ecological environment are had great hazardness.

The processing method of employing usual to flying ash the most both at home and abroad has:

(1) solidification and stabilisation.Mainly there are cement solidification, bitumen solidification, melting and solidification, chemical agent solidification and stabilization etc..Flying dust through overcuring, as met Leaching standard, can be by household waste landfill disposal, its Main Function is to make heavy metal in flying ash and other pollution components present chemical inertness or inclusive, to transport and disposing, and the toxicity of contaminant reducing and reduce its mobility to ecosphere；

(2) heavy metal is separated with flying dust, carry out recycling treatment respectively, such as acid extraction, alkaline extraction, biological extraction etc.；

(3) press hazard waste landfill through suitably disposal, but processing cost is high；

Along with the proposition of circular economy concept, garbage flying ash is carried out the disposing technique of the comprehensive utilization of waste materials of minimizing, innoxious, resource, environmental protection and energy saving, is the trend of environmental protection development.

Flying ash cement solidification is to utilize cement kiln collaborative process garbage flying ash, it has unique advantage: the firing zone calcining heat of cement kiln is high, the calcining heat of material is 1450 DEG C, in kiln, maximum gas temperature reaches 2000 DEG C, being significantly larger than 850 DEG C and 1200 DEG C of incinerator, dioxin can be entirely destroyed；The flying dust time of staying is long, and gas up to 8s, then only has 2s in the region time of staying more than 1000 DEG C in incinerator；Alkaline atmosphere in cement kiln beneficially volatile matter adsorbs at gas phase, to HF, HC1, SO: have the strongest neutralization；Grog reaction temperature when 1450 DEG C chemically can be cured to heavy metal in grog, and due to the compactness of petrifying water mudstone, appropriately processed, can effectively stop the dissolution of harmful substance in flying dust；The rate of cooling of waste gas is fast, it is to avoid dioxin recombines with furan.And, flying ash fine particles, specific surface area is big, in addition to a small amount of harmful substance and chlorine, sulfur, alkali content are too high, main component is not only close with clinker, and the refuse difference such as the flyash generally utilized with cement industry, slag are little, can be fully used as a part for raw material, thoroughly realize resource and avoid enter into landfill yard.International convention Basel Convention, " Convention of Stockholm " one of (China Jun Shi Convention country) provision in clear stipulaties: " in cement production process, collaborative process (mean and replace primary fuel or raw material by the refuse) method of danger (containing refuse) has been considered as the processing method of environmental sound ".

Numerous studies show, Leaching of Heavy Metals and vaporization at high temperature in flying ash can carry out the lattice under room temperature and high temperature and chemically stable by the inclusive design that physical chemistry processes with mineral facies, it is achieved the stable safe handling of heavy metal.With cement kiln calcining not only can effective curing heavy metal, thoroughly abolish dioxin, thus avoid purely using calcining or the high-energy source consumption of smelting process, reduce flying ash processing cost, substitute the cement industry raw material of worsening shortages simultaneously.The cement output of China is more than 1,000,000,000 t at present, calculates if receiving with cement per ton and processing 0.05t (i.e. 5%) flying dust, then cement industry can process 5,000,000 t flying ash every year.The most all of cement plant may be by or have ready conditions process flying ash, can utilize but as long as there being the cement plant of 10% to have ready conditions maybe, just can thoroughly eliminate flying ash at present, it is achieved the resource of flying ash and innoxious safe disposal.Manufacture of cement collaborative process incineration of refuse flyash can be with treatment in accordance with local conditions, treatment in situ utilizes, avoiding the great number freight of long-distance transport and the secondary pollution that may cause, the most this technology has greater advantage in China, is one of the important development direction of China's flying ash treatment technology in the future.

Summary of the invention

The purpose of this utility model is for flying ash containing cement kiln burns till harmful material, to the new technology entering the collaborative flying ash washing of cement kiln, thering is provided the feeding of a kind of flying ash washing step, stirring homogenizing and the slow system stored, it has simple in construction, material is common, reliable, be easy to maintenance and operating cost is low.

To achieve these goals, this utility model is by the following technical solutions:

A kind of flying dust washing feeding stirring system, main by electronic lifting calabash (1), flying dust jumbo bag (2), single screwed pipe feeding machine (3), homogenizing agitator tank (4), anticorrosion is centrifuged sludge pump (5), buffer tank (6), pipeline valve group (7) forms, wherein: by electronic lifting calabash (1), flying dust jumbo bag (2), single screwed pipe feeding machine (3) composition material loading part, homogenizing agitator tank (4), anticorrosion is centrifuged sludge pump (5), buffer tank (6), pipeline valve group (7) composition homogenizing stirring and caching part, material loading part is connected by single screwed pipe feeding machine (3) with homogenizing stirring and caching part, homogenizing stirring and caching part are connected and composed by pipeline valve group (7).

Described homogenizing agitator tank (4) top arranges the add water mouth of pipe (a) and the medicament mouth of pipe (b).

Described single screwed pipe feeding machine (3) is for sealing structure.

Described homogenizing agitator tank (4) arranges LOAD CELLS, and uses VFC.

Owing to using technique scheme, this utility model has the following characteristics that

1, the flying dust of incineration plant is directly loadable into jumbo bag, transports in field, electronic lifting calabash be promoted to proper height, directly to single screw feeders feed, it is simple to transport, feeding is succinct；

2, homogenizing agitator tank is provided with LOAD CELLS, measures the water and flying dust entering agitator tank；

3, the agitating device of homogenizing blender uses VFC, and flying dust, water add the agitator tank stage, and agitating device is in low speed, and flying dust and water are carried out premixing, and feeding complete is promoted to working speed by agitating device, reaches homogenizing in making the flying dust mud short time.

This utility model is containing cement kiln burns till harmful material for flying ash, new technology to the flying ash pretreatment-flying dust washing entering cement kiln synergic processing, a kind of feeding, stirring homogenizing and the slow system stored are provided, its simple in construction, employing material are common, reliable, there is good economy, and social benefit.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

Detailed description of the invention

A kind of flying dust washing feeding stirring system, mainly by electronic lifting calabash 1, flying dust jumbo bag 2, single screwed pipe feeding machine 3, homogenizing agitator tank 4, anticorrosion is centrifuged sludge pump 5, buffer tank 6, pipeline 7, valve 8 forms, wherein: electronic lifting calabash 1, flying dust jumbo bag 2, single screwed pipe feeding machine 3 forms material loading part, homogenizing agitator tank 4, anticorrosion is centrifuged sludge pump 5, buffer tank 6, and pipeline valve group 7 forms homogenizing stirring and caching part.

When this utility model uses, flying dust jumbo bag 2 is promoted to proper height by electric block 1, flying dust adds single screwed pipe hopper through the mouth of flying dust jumbo bag 2, flying dust is added homogenizing agitator tank 4 by the single screwed pipe feeding machine 3 under air-tight state, avoid dust pollution as far as possible, simultaneously by mouth of pipe a, mouth of pipe b adds water and medicament in tank, homogenizing agitator tank 4 uses LOAD CELLS to measure, flying dust is simultaneously introduced with water, save the pan feeding time, flying dust material after mixing homogenizing will be centrifuged in buffer tank 6 sent into by sludge pump 5 standby through anticorrosion, homogenizing agitator tank 4 combines with buffer tank 6, meet flying dust washing (one-level) centrifuge to work continuously, agitating device VFC, pan feeding low speed premixing can be realized and pan feeding rear stirrer is in high speed homogenization stirring.

Claims

1. a flying dust washing feeding stirring system, main by electronic lifting calabash (1), flying dust jumbo bag (2), single screwed pipe feeding machine (3), homogenizing agitator tank (4), anticorrosion is centrifuged sludge pump (5), buffer tank (6), pipeline valve group (7) forms, it is characterized in that: by electronic lifting calabash (1), flying dust jumbo bag (2), single screwed pipe feeding machine (3) composition material loading part, homogenizing agitator tank (4), anticorrosion is centrifuged sludge pump (5), buffer tank (6), pipeline valve group (7) composition homogenizing stirring and caching part, material loading part is connected by single screwed pipe feeding machine (3) with homogenizing stirring and caching part, homogenizing stirring and caching part are connected and composed by pipeline valve group (7).

Flying dust the most according to claim 1 washing feeding stirring system, it is characterised in that: described homogenizing agitator tank (4) top arranges the add water mouth of pipe (a) and the medicament mouth of pipe (b).

Flying dust the most according to claim 1 washing feeding stirring system, it is characterised in that: described single screwed pipe feeding machine (3) is for sealing structure.

Flying dust the most according to claim 1 washing feeding stirring system, it is characterised in that: described homogenizing agitator tank (4) arranges LOAD CELLS, and uses VFC.