CN205501079U - Sludge drying device - Google Patents

Abstract

The utility model belongs to the technical field of sludge treatment and soil restoration, concretely relates to sludge drying device. Sludge drying device is the hollow mixer of double -oar leaf, paddle wheel agitator is equipped with driving motor, and gear reduction unit constructs, and driving shaft and driven shaft are equipped with a plurality of paddles respectively on driving shaft and the driven shaft, the shell, wherein housing case presss from both sides the cover for the hollow, the axle is equipped with hollow inner chamber, the upper portion of the hollow mixer of double -oar leaf still is equipped with the entry and the export of hot tail gas. The utility model discloses a preliminary drying sludge of the hollow mixer of double -oar leaf can guarantee sludge drying process continuity and automation, and drying temperature is 240 DEG C of left and right sides moreover, can avoid the pernicious gas of high temperature drying sludge technology production.

Description

A kind of sludge drying mechanism

Technical field

This utility model belongs to Treatment of Sludge and technical field of soil remediation, is specifically related to a kind of sludge drying mechanism.

Background technology

Mud is the semisolid or solid matter produced in sewage disposal process.In the mud that produces in sewage treatment plant's production process (sewage becomes muddy water, be dehydrated again through flocculation mud obtained by mud cake), moisture content is up to 70% ~ 90% .Sewage treatment plant often processes 1 Ten thousand tons of sewage mud to be produced 6-10 Ton.Mud is water pollutant, and as can not be it thoroughly processed, pollution can exist always.Therefore, Treatment of Sludge is the steps necessary realizing sewage disposal.Mud is shaped as grey black, and vesicle-containing body, wherein containing substantial amounts of protein Organic substance, various strain pathogen.Mud is shelved for a long time and can be caused rotting smelly, produces the poison such as methane, hydrogen sulfide, and breed bacteria, mosquitos and flies, spreads disease, life threatening.Also containing heavy metal, chemicals in industrial sludge, pollute water and soil, endanger environment.

Sludge treatment is all to stack the most in early days, is poured into by mud in rubber ground, vegetable plot, green land, hillside.The method ignores pollution hidden trouble, serious threat environmental quality.Place's reason of mud was stored up on the ground and was transferred underground landfill to later, and the floor space needed due to underground landfill is big, develops again other method for sludge treatment, such as burning etc..Landfill mud was once the process approach that domestic sewage treatment plant processes mud, and most of producers once processed mud in the way of landfill.Sludge landfill place multiselect in the depression, field of this area, watershed, resident family is rare, and natural, ecological is the most local.After landfill mud, Sludge landfill place messenger is the most rare.But, along with the expansion of people's range of activity, the filthy environment that stink damp that landfill mud sends, mosquitos and flies are many etc. causes makes people unhappy, causes Sludge landfill place nearby residents to complain problem of environmental pollution to government.Therefore, area that are fairly developed economically, government pays much attention to and has set about research and processes sludge landfill problem.

The process of landfill mud presently, there are following methods:

1 ) burning: burning sludge is negative energy, and side effect is the biggest.Burning sludge is usually completed by the power plant in each place.It is primarily due to chimney of electric plant high, pollutes dilution, be difficult to cause nearby residents to dislike emotion.But owing to the corrosivity of mud is strong, causing electric power factory equipment loss big, depreciation is rapid.Meanwhile, because producing serious secondary pollution during burning process, the most well known is exactly two English harm, year in and year out, is easily caused genovariation, brings permanent disaster to resident's life and health of this area.On the other hand, power plant often burns 1 Ton mud, to produce in flue 186 Flue dust about kilogram, inactive, not may utilize, if two English therein, heavy metal exceed standard, be hazardous waste, need to expend substantial amounts of sanitary landfills expense ( 1200-2000 Unit / Ton).

2 ) mummification burning: dewatered sludge calorific value has 3000 Kilocalorie / Kilogram, with coal mixing incendivity, burn positive energy, does not produce two English.Owing to slag is active, recycling is disposed, and can thoroughly process mud.Through investigating, existing mummification cost 427 Unit / Ton, does not include equipment depreciation；Drying equipment price individual event 50 Wan Yuan / Ton, 300 Ton / It sludge drying project quotation 1.75 Hundred million yuans.Without power plant, the mud after mummification does not has solution route, it is impossible to survive alone.If power plant burn charge, it is contemplated that expense up to 260-480 Unit / Ton, adds up to processing cost up to 687-907 Unit / Ton mud, ordinary enterprises is difficult to undertake.

Such as: Patent No. 200510038416.3 Chinese utility model disclose a kind of sludge incineration processing method, the method is to be by moisture content 75% ~ 85% Dewatered sludge be delivered in the combustor of recirculating fluidized bed, the dusty gas that produced in storage by dewatered sludge is sent in the combustor of recirculating fluidized bed, and dewatered sludge, dusty gas burn together with coal, burns the tail gas produced and discharges after treatment.This system has CFBB, cleaner unit and mud storeroom, utilize screw pump to be sprayed through sludge carrier pipe and sludge spray head by dewatered sludge to burn to the combustor of recirculating fluidized bed, utilize blower fan to be delivered to by the dusty gas that mud produces in combustor and burn；This system can also have steam blowing equipment and high pressure water cleaning device, cleans screw pump, sludge carrier pipe and sludge spray head with variable interval, prevents its dehydrated sludge blockage.

Patent No. 200810197041.9 Chinese utility model disclose the production method of dewatered sludge and the process equipment of a kind of auxiliary fuel for power plant boiler, comprise the following steps: (1) By mud with SAA Sludge drying agent is by weight 90 ~ 99 ∶ 10 ~ 1 Add in the equal mixing device of hollow blade the most mixed, mud with SAA The total amount of sludge drying agent is 100% , and mud carries out solving solidifying, chain rupture, pelletize, makes gap； (2) By (1) The all mixed mud of step adds in Multi-power source apparatus for drying sludge, carries out being combined by conduction of heat facility by solar energy, electric energy and steam energy and is applied to treat on the mud of mummification to be dried mud, obtains the dewatered sludge of auxiliary fuel for power plant boiler.The dewatered sludge of the auxiliary fuel for power plant boiler prepared by this utility model is with the steam coal of coal-burning power plant by weight 8 ~ 15 ∶ 92 ~ 85 Carry out mix grinding obtain fuel combination spray into boiler firing equipment carry out burning produce superheated steam, dewatered sludge with the total amount of the steam coal of coal-burning power plant is 100% 。

Patent No. 200910015938.X Chinese utility model disclose a kind of harmless recycling treatment process for urban sludge, utilize the existing pulverized-coal fired boiler of power plant, defeated coal, exhaust emissions processing system to carry out municipal sludge disposal.The flue gas that this utility model extracts from the air preheater front portion of pulverized coal power boiler is mixed into the flue gas extracted from boiler of power plant cleaner unit rear portion 140 ~ 180 DEG C flue gas delivers to sludge drier, and mud is carried out mummification, and the mud after mummification enters Coal Transportation System and is mixed into fire coal and enters stove burning electricity generation, it is achieved recycling sludge utilizes.Coal-fired and dewatered sludge burns in boiler, the flue gas of discharge enters boiler of power plant cleaner unit and wet desulfurization system processes, after mummification, flue gas and dewatered sludge store, the tail gas of course of conveying generation drains into power plant desulphurization system and processes, it is achieved pollutant discharge in compliance with the standard, have stopped the secondary pollution to environment.

Patent No. 201210479041.4 Chinese utility model disclose the manufacture method of a kind of sewage sludge biomass fuel, mix with organic water-containing sludge and biomass material, by fermentation, dehydration, thus produce a kind of new sewage sludge biomass fuel.Gained sewage sludge biomass fuel can substitute raw coal, and its calorific power exists 1500-5000 Kilocalorie, its product easy firing, and discharge, less than European Union Emission standard, rich in elements such as calcium, magnesium, phosphorus, potassium, sodium in the ashes after burning, are first-class hot quick-acting organic fertilizer material.

Patent No. 201210566895.6 Chinese utility model disclose a kind of municipal sludge clean fuel system and sludge fuel method, system includes: concentration basin, mud mechanism for testing, and mud mechanism for testing is connected with mechanical presses drier or mixing reactor；Mechanical presses drier connects burning boiler and gas disposal facility respectively, and mixing reactor connects burning boiler；Burning boiler connects gas disposal equipment, district heating system and mud flyash disposal facility respectively, and mud flyash disposal facility connects mud flyash test system；Gas disposal equipment is connected with condensing unit, and condensing unit is sequentially connected with denitrogenation, desulfurization and ammonia removal device, and ammonia removal device connects tank used for storing ammonia and burning boiler respectively.Method includes: sludge condensation process, performance test, extrude or be mixed to get briquettes with sludge or sludge water-coal-slurry, and the mud coal ash for manufacturing after burning boiler burns is for low molecule flocculant or for building materials, gas postpones reuse through place.

Utility model content

The purpose of this utility model is to provide a kind of mud drying device, the preliminary moisture removed in mud, reduces the volume of mud, coordinates follow-up sludge treatment technique.

In order to realize above-mentioned utility model purpose, the technical solution adopted in the utility model is: a kind of mud drying device, sludge drying mechanism is paddle mixer, described paddle mixer is provided with driving motor, gear reduction, axle, blade, shell, wherein said case body is hollow chuck, and described axle is provided with hollow lumen.

In technique scheme, described paddle mixer is double hollow blenders of blade.

In technique scheme, the top of the described pair of hollow blender of blade is additionally provided with the entrance and exit of hot exhaust gas.

In technique scheme, heat conduction flexible pipe is interconnected with housing chuck and axle inner chamber respectively, and conduction oil is the whole paddle mixer of circulating-heating in chuck and hollow lumen.

In technique scheme, described paddle mixer is provided with pyrolyzing sludge district and drying sludge district, mud is introduced into pyrolyzing sludge district and the mud drum water-bound of mud is destroyed, moisture is partially released, to initial volume about 1/3rd are further dried, subsequently into lower one disposing technique subsequently into dry section.

In technique scheme, the temperature in described paddle mixer is 100 ~ 240 ℃。

Due to the application of technique scheme, compared to the prior art, this utility model has the advantage that this utility model uses double blade hollow blender preliminarily dried mud, it is ensured that drying sludge process continuity and automatization, and baking temperature is 240 About DEG C, the pernicious gas that high temperature drying sludge processes produces can be avoided.

Accompanying drawing explanation

Figure 1 Top view for the hollow blender of double blades in embodiment；

Figure 2 Sectional view for the double blades hollow blender fuselage in embodiment；

Figure 3 Side schematic view for the nearly material inlet end of the hollow blender of double blades in embodiment；

Figure 4 Side schematic view for the nearly material outlet end of the hollow blender of double blades in embodiment；

Wherein 1 For the hollow blender of double blades, 2 For motor, 3 For gear reduction, 4 、 5 Export for conduction oil entrance and conduction oil, 6 For material inlet, 7 、 8 For active blade axle and passive blade axle, 9 For hollow blade blade, 10 、 11 Entrance and exit for hot exhaust gas； 12 For material outlet.

Detailed description of the invention

Embodiment 1

A kind of mud drying device, sludge drying mechanism is double hollow blenders of blade 1 , described paddle mixer is provided with driving motor 2 , gear reduction 3 , two axles 7 、 8 It is respectively active blade axle and passive blade axle, some hollow blade blades 9 , it is provided with conduction oil entrance 4 Go out with conduction oil 5 The shell of mouth, wherein said case body is hollow chuck, and described axle is provided with hollow lumen.Described driving motor drives two axles by gear reduction, and two axles are each provided with some blades, the area of blade and arrange the parameters such as angle and can meet required mud handling capacity.Wherein heat conduction flexible pipe is interconnected with housing chuck and axle inner chamber respectively, and conduction oil is the whole paddle mixer of circulating-heating in chuck and hollow lumen so that the temperature in paddle mixer is 240 About DEG C.

The top of the described pair of hollow blender of blade is additionally provided with the entrance and exit of hot exhaust gas 10 、 11 , the tail gas auxiliary heating mud of heat can be introduced.

Described paddle mixer is provided with pyrolyzing sludge district and drying sludge district, mud is introduced into pyrolyzing sludge district and the mud drum water-bound of mud is destroyed, moisture is partially released, and to initial volume about 1/3rd is further dried subsequently into dry section, subsequently into lower one disposing technique.

Claims (4)

1. a mud drying device, it is characterised in that sludge drying mechanism is paddle mixer, described paddle mixer is provided with driving motor, gear reduction, axle, blade, shell, and wherein said case body is hollow chuck, and described axle is provided with hollow lumen；Described paddle mixer is provided with pyrolyzing sludge district and drying sludge district.

Mud drying device the most according to claim 1, it is characterised in that described paddle mixer is double hollow blenders of blade.

Mud drying device the most according to claim 2, it is characterised in that the top of the described pair of hollow blender of blade is additionally provided with the entrance and exit of hot exhaust gas.

Mud drying device the most according to claim 1, it is characterised in that the temperature in described paddle mixer is 100～240 DEG C.