CN211625280U

CN211625280U - Sludge incineration system

Info

Publication number: CN211625280U
Application number: CN201922386727.9U
Authority: CN
Inventors: 赵广健; 邓发利; 梁鸿超; 郑兴伟
Original assignee: Guangzhou Environmental Protection Service Co ltd
Current assignee: Guangzhou Environmental Protection Service Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-02
Anticipated expiration: 2029-12-26

Abstract

The utility model provides a sludge incineration system, which comprises a rotary drying kiln for placing sludge, a burner for generating flame and a mixed combustion chamber capable of receiving the flame generated by the burner, wherein the mixed combustion chamber is positioned between the burner and the rotary drying kiln; the mixed combustion chamber is provided with an air inlet, the rotary drying kiln is provided with a heating gas inlet, air flowing in from the air inlet and flame generated by the burner are mixed and combusted to form heating gas, and the heating gas enters the rotary drying kiln through the heating gas inlet. The utility model discloses set up the chamber of mixing combustion, can avoid high temperature flame directly to fire mud, had the advantage that the energy consumption is low, exhaust emission is little.

Description

Sludge incineration system

Technical Field

The utility model relates to a sludge treatment technical field, concretely relates to sludge incineration system to avoid the phenomenon that mud was directly fired to high temperature flame.

Background

With the rapid development of economy, the production amount of solid waste sludge in China is increased rapidly, and effective treatment and disposal of the sludge are very important. At present, the sludge treatment mainly comprises two modes of landfill treatment and incineration treatment. Because the landfill treatment process is influenced by various environmental factors, the conditions are strict, the treatment is not good, and secondary pollution to underground water, soil and the like is easy to cause; the sludge incineration treatment has the obvious advantages of reduction, stabilization and harmlessness, and is a widely used mode at present.

At present, the rotary kiln is used for drying sludge, most of the rotary kiln adopts direct combustion for heat supply, flame of a burner is directly combusted in the kiln, and the heat of the flame is utilized for directly drying the sludge. The rotary drying kiln is a heating device, fuel and primary air for combustion supporting are fed into a combustion chamber through a kiln head burner to form high-temperature flame, a large amount of heat is emitted, the generated high-temperature smoke is used as a heat source for drying materials, and the discharged waste gas is discharged into the atmosphere after dust collection and purification.

Based on this, this application provides a sludge incineration system that avoids high temperature flame directly to fire mud to reduce the energy consumption.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a sludge incineration system, it has set up the chamber of mixing combustion, can avoid high temperature flame directly to fire mud, has the advantage that the energy consumption is low, exhaust emission is little.

In order to achieve the purpose, the utility model provides a sludge incineration system, which comprises a rotary drying kiln for placing sludge, a burner for generating flame and a mixed combustion chamber capable of receiving the flame generated by the burner, wherein the mixed combustion chamber is positioned between the burner and the rotary drying kiln; the mixed combustion chamber is provided with an air inlet, the rotary drying kiln is provided with a heating gas inlet, air flowing in from the air inlet and flame generated by the burner are mixed and combusted to form heating gas, and the heating gas enters the rotary drying kiln through the heating gas inlet.

The above technical scheme of the utility model, mix the produced flame of combustor can be received completely in the burning room, avoided flame directly to fire mud and harm the phenomenon of mud organic matter, outside air passes through in the air inlet gets into the burning room that mixes, mixes with the flame in the burning room that mixes, forms the heating gas of high temperature, this heating gas gets into in the gyration drying kiln through the heating gas inlet, in order to dry the mud in the gyration drying kiln, in order to accomplish the minimizing and innocent treatment process of mud.

Furthermore, in the process of rotating the rotary drying kiln, the mixed combustion chamber is always in rotary sealing connection with the rotary drying kiln so as to supply high-temperature heating gas.

According to another embodiment of the utility model, the temperature of the heating gas that forms in the mixed combustion chamber is not less than 300 ℃, for example 500 ℃, can form sufficient heat in order to dry sludge on the one hand, and on the other hand can effectively avoid firing the phenomenon appearance of sludge.

According to the utility model discloses a another kind of embodiment, the rotary drying kiln sets up with horizontal slope mode, and the heating gas entry sets up on a tip that rotary drying kiln is in the low level.

Furthermore, a sludge outlet is further formed in one end part of the rotary drying kiln at the low position, and a heating gas outlet and a sludge inlet are formed in one end part of the rotary drying kiln at the high position.

Furthermore, a gas purification device is arranged at the heated gas outlet, and gas exhausted to the outside of the rotary drying kiln can be exhausted outside after passing through the gas purification device; and the two ends of the gas return pipe are respectively connected with the outlet of the gas purification device and the mixed combustion chamber, namely the treated gas is directly used as supplementary air of the mixed combustion chamber for secondary heating and then is continuously used.

The utility model discloses possess following beneficial effect:

the utility model discloses a mud drying system has set up peculiar chamber of mixing combustion, and the produced high temperature flame of combustor is fully mixed combustion with the air in mixing combustion chamber, forms the heating gas of high temperature, then this heating gas passes through in the heating gas entry gets into gyration drying kiln, uses, has avoided the phenomenon that high temperature flame directly fired mud.

In addition, the temperature of the heating gas is not lower than 300 ℃, for example, 500 ℃, on one hand, enough heat can be formed to dry the sludge, on the other hand, the phenomenon of burning the sludge can be effectively avoided, and the emission of waste gas is reduced.

In addition, the exhaust gas of the rotary drying kiln can be recycled, and the gas with a certain temperature can be circulated into the mixed combustion chamber, so that the energy consumption is reduced.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of the sludge incineration system of the present invention.

Detailed Description

Example 1

As shown in fig. 1, a sludge incineration system comprises a rotary kiln 10, a burner 20, and a mixed combustion chamber 30, wherein the rotary kiln 10 is used for placing a certain amount of sludge, the burner 20 can generate high-temperature flame, the mixed combustion chamber 30 is located between the burner 20 and the rotary kiln 10 and is used for receiving the high-temperature flame,

wherein, the mixed combustion chamber 30 is provided with an air inlet 31, the rotary drying kiln 10 is provided with a heating gas inlet 11, the air flowing in from the air inlet 31 is mixed and combusted with the flame generated by the burner 20 to form heating gas, and the heating gas enters the rotary drying kiln 10 through the heating gas inlet 11;

specifically, the temperature of the heating gas formed in the co-combustion chamber 30 is not lower than 300 ℃, for example, 500 ℃, on one hand, enough heat can be formed to dry the sludge, on the other hand, the phenomenon of burning the sludge can be effectively avoided, and organic matters in the sludge cannot be damaged.

Further, the rotary kiln 10 is arranged in a horizontal inclined manner, the heating gas inlet 11 is arranged at one end of the rotary kiln 10 at a low position, and a sludge outlet 12 is arranged at the end at the low position for discharging dried sludge;

still further, one end of the rotary drying kiln 10 at a high position is provided with a heated gas outlet 13 and a sludge inlet 14, the sludge to be treated is supplemented and added through the sludge inlet 14, and the waste gas generated in the drying process is discharged through the heated gas outlet 13.

Correspondingly, a gas purification device (not shown in the figure) is arranged at the heated gas outlet 13, and after the gas exhausted to the outside of the rotary drying kiln 10 needs to pass through the gas purification device, the purified qualified gas is exhausted to the atmosphere.

Example 2

In the present embodiment, as shown in fig. 1, on the basis of embodiment 1, a gas return pipe 40 is further provided, one end of the gas return pipe 40 is connected to an outlet of the gas stripping purification device, and the other end of the gas return pipe 40 is connected to the mixed combustion chamber 30, that is, the treated gas is directly used as the supplementary air of the mixed combustion chamber 30 for secondary heating and then is continuously used.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention are intended to be covered by the scope of the invention.

Claims

1. A sludge incineration system, characterized by comprising:

a rotary drying kiln for placing sludge;

a burner for producing a flame; and

a combustion chamber capable of receiving the flame generated by the burner, which is located between the burner and the rotary kiln;

the mixing and burning chamber is provided with an air inlet, the rotary drying kiln is provided with a heating gas inlet, air flowing in from the air inlet and flame generated by the burner are mixed and burnt to form heating gas, and the heating gas enters the rotary drying kiln through the heating gas inlet.

2. The sludge incineration system of claim 1, wherein the temperature of the heated gas formed in the co-firing chamber is not less than 300 ℃.

3. The sludge incineration system of claim 1, wherein the rotary kiln is disposed in a horizontally inclined manner, and the heated gas inlet is disposed at an end of the rotary kiln at a lower level.

4. The sludge incineration system of claim 3, wherein the rotary kiln has a sludge outlet at a lower end and a heated gas outlet and a sludge inlet at an upper end.

5. A sludge incineration system according to claim 4, wherein a gas cleaning device is provided at the heated gas outlet.

6. The sludge incineration system of claim 5, wherein a gas return pipe is further provided, and both ends of the gas return pipe are respectively connected with the outlet of the gas purification device and the mixed combustion chamber.