KR101327707B1

KR101327707B1 - system for drying sludge

Info

Publication number: KR101327707B1
Application number: KR1020100123879A
Authority: KR
Inventors: 배영길
Original assignee: 유경화
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2013-11-11
Also published as: KR20120062571A

Abstract

The present invention relates to a powder sludge incineration treatment method, and more particularly, to dry the sludge and pulverize it into a powder form and inject it into an incinerator to increase combustion efficiency and subsequently input powder sludge without additional fuel supply by the incineration heat. The present invention relates to a powder sludge incineration treatment method and system for treating the same by chain incineration.
In the present invention, in the sludge treatment, the dehydrated sludge is dried by a drying apparatus, and the dried sludge is pulverized by a pulverizer (M), and the powder sludge is incinerator 70 in the incinerator 70 through the scattering nozzle 72. When the incinerator 70 is heated by ignition and burning by the burner 78 at the same time as the scattering supply, the powder sludge which is subsequently injected by the self-heat of combustion of the powder sludge in the state where the burner 78 is stopped is continuously It is characterized by burning and treating.

Description

Powder sludge incineration system {system for drying sludge}

The present invention relates to a powder sludge incineration treatment system. More specifically, the sludge is dried and then crushed into a powder form and then injected into an incinerator, thereby increasing combustion efficiency and subsequently adding powder sludge without additional fuel supply by the incineration heat. The present invention relates to a powder sludge incineration treatment system for treating by incineration.

In general, organic sludge is a microbial residue generated during the treatment of water, industrial water, industrial wastewater, sewage, and manure, and most of these components contain organic materials. Interest is on the rise.

Such organic sludge is generated about 7 million tons per year, of which sewage sludge corresponds to 3 million tons per year, 70% of which is treated with ocean dumping, and the recycling rate is very low at around 10%.

In addition, from 2011, the London Convention will prohibit the organic dumping of organic sludge, and the sludge that has been treated with marine dumping should be treated on land. Currently, the sludge recycling rate of organic sludge, which is about 10%, is 70% by 2011. A policy has been attempted to increase to a degree.

Recently, the generation of household sewage and industrial wastewater has also increased greatly for various reasons such as economic development, population growth, and improvement of living standards. Accordingly, in order to prevent water pollution of major rivers and rivers, the facilities of sewage treatment plants, which are the basic facilities for water quality improvement, are inevitably increasing, and the amount of sewage sludge, which is a secondary by-product of secondary water, is gradually increasing.

Conventional sludge treatment and recycling methods include solidification method, simple drying, composting, carbonization, and lightweight aggregate method, and the solidification method is a method of applying a large amount of solidifying agent to a landfill material after curing for several days. However, this method has a problem that the curing period is long and efficient replacement of odor is difficult, and the composting method has a lot of regulations to be solved by the fertilizer management law, and it is difficult to create a source of demand.

In addition, the carbonization method or lightweight aggregate method has a problem of very low economic efficiency. The conventional solidification treatment method has a disadvantage in that excessive treatment time is required when treating sludge and a large installation site is required.

The present invention is to provide a sludge incineration treatment method and system for treating sludge to minimize the generation of pollutants and at the same time to minimize the consumption of energy, and to dry and powder the sludge and spray it into the incinerator and The purpose is to greatly improve the combustion efficiency by burning simultaneously.

In addition, another object of the present invention is to minimize the cost of treating the sludge by allowing the powder sludge to be continuously supplied after the combustion of the powder sludge is continuously burned by the heat of its combustion.

In addition, another object of the present invention, the heat is transferred to the sludge in the process of drying and transporting the sludge so that the sludge can be dried in a short time with a low energy to increase the economical efficiency, the volume of the sludge drying apparatus And it is an object to provide a powder sludge incineration treatment method and system that can minimize the installation area.

The present invention is to achieve the object as described above, the present invention is achieved by drying the dehydrated sludge and then powderized to burn while injecting it in an incinerator.

In addition, the present invention, the dehydrated sludge is formed into a form that is easy to dry, conveying the formed sludge to the conveyor, and heated the hot ball heated to the sludge in the process of drying by applying heat and hot air to the conveyed sludge As the sludge and the heating ball are fed together, the sludge is dried as heat of the heating ball, and the sludge mass is crushed while the friction with the heating ball.

In the present invention, the heated ball heated to a high temperature in the process of drying while transporting the sludge is conveyed together with the conveyed sludge, so that the heated ball is crushed with the sludge mass and pulverized the sludge mass at the same time and heats the sludge particles quickly and uniformly. By transferring the effect is to significantly reduce the drying time.

Thus, by simplifying the sludge drying apparatus to minimize the installation area of the drying apparatus, there is an effect that can secure the economic efficiency of the sludge drying treatment.

1 is an explanatory view showing a sludge drying apparatus according to the present invention.
2 is an explanatory view showing an extract of the recovery device of the present invention.
Figure 3 is a perspective view showing an extract of another recovery device of the present invention.
4 is a cross-sectional view showing yet another recovery device of the present invention.
5 is an incinerator structure diagram of the present invention.
6 is a structural diagram of a powder sludge dosing device configured in the incinerator of the present invention.
Figure 7 is a state in which flying blades are installed in the powder sludge input device of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings as a brief description of the drawings.

In the powder sludge incineration treatment method of the present invention, the dewatered sludge is dried by a drying apparatus, the dried sludge is pulverized by a crusher (M), and the powder sludge is sprayed from the incinerator 70 to the scattering nozzle 72. At the same time, the burner 78 is ignited and burned, and when the incinerator 70 is heated by the combustion of the powder sludge, the powder sludge which is subsequently injected by the self-heating combustion of the powder sludge is continuously burned while the burner 78 is stopped. To handle it.

In other words, when the dried sludge is powdered, the contact area with air is widened during combustion, and thus the combustion efficiency is improved. In particular, when the powder sludge is injected, it is injected with sufficient air, so that combustion occurs close to complete combustion, thereby minimizing the generation of pollutants such as harmful gases.

In the drying apparatus constituting the sludge treatment system of the present invention, the dewatered sludge is formed into an easy-to-dry form, the formed sludge is transferred to a conveyor, and the sludge to be transported is heated at high temperature to the sludge in the process of drying by applying heat and hot air. By heating the heated ball into the sludge and the heating ball is transferred together with the heat of the heating ball, so as to dry the sludge and the sludge mass rubbed with the heating ball to be crushed.

That is, the heating ball heated to a high temperature is transported with the sludge on the conveyor and continuously rubbed with the sludge so that the heat of the heating ball is transferred to the sludge to quickly dry the sludge.

In addition, while the heating ball is rubbed with the sludge mass, the sludge mass is finely pulverized, and at the same time, heat is rapidly and uniformly transmitted to the sludge particles, thereby greatly reducing the drying time.

Such a drying apparatus of the present invention, as shown in Figure 1, the storage tank (1) for storing the sludge cake dehydrated in the dehydrator; A molding apparatus (2) for molding the sludge cake supplied from the storage tank (1) into an easily dried form; A conveyor 3 for transporting the sludge 100 discharged from the molding apparatus 2; A drying apparatus 4 for drying by applying heat and hot air to the sludge 100 conveyed along the conveyor 3; A heating ball 10 for crushing the sludge and applying heat to the sludge while being transported together with the sludge 100; An input device (5) installed at the tip side of the conveyor (3) to heat the heating ball (10), and to feed the heated ball onto the conveyor (3); A recovery device 6 installed at the rear end side of the conveyor 3 to recover the heating ball 10; It consists of the conveying apparatus 7 which conveys the heating ball 10 collect | recovered by the collection | recovery apparatus 6 to the input apparatus 5.

And the recovery device for recovering the heating ball may be configured by installing a plurality of electromagnets 60 in the chain 61 is driven by the drive body as shown in the accompanying drawings.

That is, the electromagnet 60 having magnetic force or loss depending on whether power is applied is coupled to the chain 61, and such a chain 61 is installed at the rear end side of the conveyor 3 to be transferred from the conveyor 3. Among the sludge 100 and the heating ball 10 to be made, only the metal heating ball 10 is attached to the electromagnet 60, and the heated ball 10 attached to the electromagnet 60 is recovered from the heating rod transfer device 7 As the electromagnet 60 loses its magnetic force by shorting the power applied to the electromagnet 60 at a position close to), the heating ball 10 falls to the transfer device 7 and is transferred to the feeding device 5. To make it possible.

3 is a perspective view showing another extracting apparatus of the present invention.

That is, the sludge 100 which passes through the sludge 100 and the sludge 100 powder having a small particle size passes through the bottom end of the conveyor 3 for transporting the sludge 100 and the heating ball 10, and filters the heated ball 10 having a large particle size to be filtered. ) Can be installed to configure the recovery device.

At this time, the locking body 65 is formed in the shape of a fork in which a plurality of blades 650 are installed at equal intervals, such that the locking body 65 is inclined so that the heating ball 10 is the blade 650. At the same time to be caught in the rolling along the inclined blade 650 to be collected in the collection box.

And Figure 4 is a cross-sectional view showing another recovery device of the present invention.

By installing a plurality of equal intervals on the rotating shaft 66, the locking body 65 is configured as shown in Figure 3 is configured to hook the heating ball 10 while the locking body 65 is rotationally driven. The recovery device 6 of the present invention configured as described above further rotates as the catching body 65 rotates to filter the heating ball 10 while the sludge 100 is lumped with the blade 650 of the catching body 65. Finely pulverized effect can be obtained.

On the other hand, the heating ball input device 5 may be heated using a separate heating device (gas, electric burner, etc.) in the transfer process, or may be heated in a state collected in a separate heating tank. The heated ball 10 thus heated is transferred to the feeding device 5.

The incinerator 70 of the present invention is equipped with a burner 78 for ignition (ignition) in the combustion chamber C, and powder sludge input means 71 for dispersing powder sludge into the combustion chamber C, and incinerated A residue discharge device 79 for discharging the sludge residue is constituted.

The powder sludge injecting means 71 serves to disperse the powder sludge with a uniform distribution in the incinerator 70 space. The structure of the sludge injection nozzle 72 is exposed to the inside of the combustion chamber C. A blower tube 73 for supplying air supplied from a blower or a compressor (not shown in the drawing) to the scattering nozzle 72 is connected, and powder sludge is uniformly supplied to the scattering nozzle 72 or the blower tube 73. Powder sludge supply device 74 is configured to be connected. The powder sludge supply device 74 is a powder sludge feed pipe 75 which is connected to the blower tube 73 or the scattering nozzle 72 and the screw 76 is rotatably operated therein so that the screw 76 rotates. By a constant amount of powder sludge is always supplied in a separate powder sludge storage hopper (not shown in the figure). Of course, the rotational speed of the screw 76 is variable and can be freely adjusted according to the speed, but this is a means for finding a proportional point that the combustion efficiency is the best proportional to the amount of air injected.

When the powder sludge hopper is supplied through the powder sludge supply device 74, it is transported by the air supplied to the blower tube 73, is blown through the scattering nozzle 72 to the combustion chamber C, and scattered uniformly. At the same time, when the burner 78 is operated, the powder sludge instantly ignites and burns. Since the powder sludge is supplied continuously, once the powder sludge is combusted, continuous combustion occurs even if the burner 78 is stopped by the heat of combustion. In particular, more stable combustion is achieved in a state where the temperature inside the incinerator 70 is increased. In order to enhance the uniform scattering effect of the powder sludge, the flying blade 77 having a twisted plate shape is installed in front of the scattering nozzle 72 so that the air and the powder sludge sprayed through the scattering nozzle 72 are wider. It is even more effective to ensure that the feed is diffused.

In addition, when the air inside the combustion chamber (C) is torn back, the combustion efficiency is further improved, it is more effective to install a cyclone device.

After the combustion, the remaining residues fall down to the incinerator 70 and are discharged through a separate residue discharge device 79. The residue discharge device 79 may be a screw feed device.

And the sludge residue falling is transferred by the weight to the residue discharge device 79 through the residue transfer inclined surface 80, the residue discharge device 79 slowly discharges the sludge residue.

At this time, the powder sludge which is not combusted is burned for the time discharged to the residue discharge device 79, and the heat of combustion generated at that time helps to burn the subsequently added powder sludge.

On the other hand, the scattering nozzle 72 for scattering the discharge of the powder sludge may be provided in plurality in the side wall or the ceiling of the incinerator 70, may be installed so as to face from the bottom to the top.

The combusted combustion gas is discharged to the exhaust port 82, and if necessary, a heat recovery device may be installed or a secondary combustion device may be installed to block the emission of harmful gas. And it is preferable that the heat recovery device is utilized as drying heat of the drying device to reduce energy consumption.

1: Storage tank: 2: Molding apparatus 3: Conveyor
4: drying apparatus 5: input apparatus 6: recovery apparatus
7: transfer device 10: heating ball 61: chain
65: jammed 100: sludge 650: blade
70: incinerator 71: powder sludge input means
72: scattering nozzle 73: blower 74: powder sludge supply device
75: feed pipe 76: screw 77: flying wing
78: burner 79: residue discharge device
80: residue feed slope C: combustion chamber

Claims

A storage tank 1 for storing the sludge cake dehydrated in the dehydrator; A molding apparatus (2) for molding the sludge cake supplied from the storage tank (1) into an easily dried form; A conveyor 3 for transporting the sludge 100 discharged from the molding apparatus 2; A drying apparatus for drying by applying heat and hot air to the sludge 100 transported along the conveyor 3; A grinder (M) for powdering the dried sludge (10); Construct an incinerator 70 to incinerate the pulverized powder sludge,
The incinerator 70 includes a plurality of powder sludge injecting means 71 for scattering and supplying the powder sludge to the combustion chamber C, and a burner for ignition and burning powder sludge scattered and supplied by the powder sludge injecting means 71. 78); Powdered sludge incineration treatment system comprising a residue discharge device (79) for discharging the incinerated sludge ash.

According to claim 1, wherein the powder sludge input means 71 comprises a plurality of flying nozzles (72) installed to face the combustion chamber (C) of the incinerator (70); A blowing pipe (73) for supplying air to the scattering nozzle (72); A powder sludge feed tube 75 which is installed to be merged into the blower tube 73 or the scattering nozzle 72; A screw (76) which rotates by a driving means in the sludge conveying pipe (75) to convey powder sludge; Powder sludge incineration treatment system, characterized in that made.

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3. The powder sludge incineration treatment system according to claim 2, wherein a fly wing (77) is provided at the end of the fly nozzle (72).