CN204918337U - Sludge drying incineration disposal device - Google Patents

Abstract

The utility model provides a sludge drying incineration disposal device, include: sludge drying machine, burn burning furnace, exhaust -heat boiler and gas cleaning device. The advantage does: at first adopt the sludge drying machine to burn standard requirement with the wet sludge drying of moisture content 80% to reaching, then, utilize and to burn the sludge incineration of burning furnace after to the mummification, simultaneously, utilize and to burn the burning furnace waste heat and heat the heating medium of mummification machine, effectively practiced thrift the energy. In addition, the sludge drying machine adopts paddle sludge drying machine, has effectively improved sludge drying efficiency.

Description

Sludge drying and incineration treatment device

technical field

The utility model belongs to the technical field of sludge treatment, in particular to a sludge drying and incineration treatment device.

Background technique

At present, the sludge treatment method in sewage treatment plants is mainly the sludge drying treatment method. The sludge drying treatment method refers to: drying the sludge by using heat energy, and the dried sludge is in the form of particles or powder, with a volume of only 1/5-1/4 of the original value; in addition, since the moisture content of the dried sludge is below 10%, the microbial activity in the sludge is inhibited, thereby preventing the sludge from becoming moldy and smelly, which is beneficial to storage and transport. Therefore, the sludge drying treatment method is an effective sludge treatment method.

However, in the process of realizing the utility model, the inventor has found that the prior art has at least the following problems:

The existing sludge drying treatment method has the problem of high energy consumption, thereby increasing the sludge treatment cost.

Utility model content

Aiming at the defects in the prior art, the utility model provides a sludge drying and incineration treatment device, which can effectively solve the above problems.

The technical scheme that the utility model adopts is as follows:

The utility model provides a sludge drying and incineration treatment device, comprising: a sludge dryer, an incinerator, a waste heat boiler and a flue gas purification device;

Wherein, the sludge dryer includes a sludge drying cavity and a first heat transfer medium circulation pipeline; the sludge drying cavity is provided with a sludge inlet port and a sludge discharge port; all of the sludge drying cavity The sludge inlet port is used to communicate with the sludge discharge port of the sludge conveyor; the sludge discharge port of the sludge drying chamber is used to communicate with the sludge inlet port of the incinerator; the first 1. The heat transfer medium inlet port of the heat transfer medium circulation pipeline is used to connect to the heat transfer medium outlet port of the heat transfer medium heating station; the heat transfer medium outlet port of the first heat transfer medium circulation pipe is used to connect to the heat transfer medium inlet port of the heat transfer medium heating station ;

The exhaust high-temperature flue gas port of the incinerator communicates with the high-temperature flue gas inlet port of the waste heat boiler; a second heat transfer medium circulation pipe is also arranged inside the waste heat boiler, and the heat transfer medium inlet of the second heat transfer medium circulation pipe The port is used to connect to the heat transfer medium outlet of the heat transfer medium heating station; the heat transfer medium outlet of the second heat transfer medium circulation pipe is used to connect to the heat transfer medium circulation pipe of the sludge dryer;

The waste heat boiler is also provided with a low-temperature flue gas exhaust port; the low-temperature flue gas exhaust port of the waste heat boiler is connected to the low-temperature flue gas intake port of the flue gas purification device.

Preferably, the sludge dryer is a paddle sludge dryer.

Preferably, the paddle sludge dryer includes: jacket (1), housing (2), first paddle shaft (3), second paddle shaft (4), machine base (5) and transmission institution(6);

The housing (2) is fixedly mounted on the base (5); the jacket (1) is sheathed and installed outside the housing (2), so that the jacket (1) and the A heat transfer medium transmission channel is formed between the housings (2); the upper end of the heat transfer medium transmission channel is provided with a medium inlet port (7), and the lower end of the heat transfer medium transmission channel is provided with a medium outlet port (8);

The inner cavity of the housing (2) forms a sludge treatment cavity; one end of the sludge treatment cavity is provided with a sludge inlet (9), and the other end of the sludge treatment cavity is provided with a sludge discharge port (10 ); the first paddle shaft (3) and the second paddle shaft (4) are both arranged inside the sludge treatment chamber for rotation driven by the transmission mechanism (6) , and then stir the sludge inside the sludge treatment chamber; in addition, the ends of the first paddle shaft (3) and the second paddle shaft (4) are respectively provided with The medium heating station is connected to the heat transfer medium inlet and the heat transfer medium outlet of the circulating supply medium circuit.

Preferably, the first paddle shaft (3) is fixedly installed with the first paddle along the axial direction; the second paddle shaft (4) is fixedly installed with the second paddle along the axial direction; the first paddle and The second paddles are mutually meshing structures.

Preferably, the housing (2) is a w-shaped housing.

Preferably, the paddle sludge dryer is also equipped with a temperature testing hole and a sampling port; both the temperature testing hole and the sampling port are in communication with the housing (2).

Preferably, the heat transfer medium is steam, hot water or heat transfer oil.

Preferably, the incinerator is a fluidized bed incinerator.

The sludge drying and incineration treatment device provided by the utility model has the following advantages:

First, use a sludge dryer to dry the wet sludge with a moisture content of 80% until it reaches the incineration standard, and then use an incinerator to incinerate the dried sludge; at the same time, use the waste heat of the incinerator to heat the heating medium of the dryer Heating, effectively saving energy. In addition, the sludge dryer adopts the paddle sludge dryer, which effectively improves the sludge drying efficiency.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the sludge drying incineration treatment device provided by the utility model;

Fig. 2 is the front view of the paddle sludge dryer provided by the utility model;

Fig. 3 is a side view of the paddle sludge dryer provided by the utility model;

Fig. 4 is the top view of the paddle sludge dryer provided by the utility model;

Fig. 5 is a sectional view along A-A of Fig. 2 .

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawing:

In conjunction with Figure 1, the utility model provides a sludge drying and incineration treatment device, including: a sludge dryer, an incinerator, a waste heat boiler and a flue gas purification device;

Among them, the sludge dryer includes a sludge drying chamber and a first heat transfer medium circulation pipe; the sludge drying chamber is provided with a sludge inlet port and a sludge discharge port; the sludge inlet port of the sludge drying chamber is used to communicate with The sludge discharge port of the sludge conveyor is connected; the sludge discharge port of the sludge drying chamber is used to communicate with the sludge inlet port of the incinerator; the heat transfer medium inlet port of the first heat transfer medium circulation pipeline is used to connect to the heat transfer medium The outlet heat transfer medium port of the heating station; the outlet heat transfer medium port of the first heat transfer medium circulation pipe is used to connect to the heat transfer medium inlet port of the heat transfer medium heating station;

The exhaust high-temperature flue gas port of the incinerator is connected with the high-temperature flue gas inlet port of the waste heat boiler; there is also a second heat transfer medium circulation pipe inside the waste heat boiler, and the heat transfer medium inlet port of the second heat transfer medium circulation pipe is used to connect to the heat transfer medium for heating The heat transfer medium outlet of the station; the heat transfer medium outlet of the second heat transfer medium circulation pipe is used to connect to the heat transfer medium circulation pipe of the sludge dryer;

The waste heat boiler is also provided with a low-temperature flue gas exhaust port; the low-temperature flue gas exhaust port of the waste heat boiler is connected to the low-temperature flue gas intake port of the flue gas purification device.

The working principle of the above-mentioned sludge drying and incineration treatment device is as follows:

The wet sludge with a moisture content of 80% first enters the sludge dryer for drying, and after reducing the moisture content of the sludge to below 40%, the sludge is then transported to the incinerator for incineration. The high-temperature flue gas produced by sludge incineration Transported to the waste heat boiler, on the one hand, the high-temperature flue gas heats the heat transfer oil located in the waste heat boiler, and the heated heat transfer oil returns to the sludge dryer as the heating medium of the sludge dryer to heat the next batch of treated Sludge, thereby realizing the purpose of waste heat utilization of sludge incineration; on the other hand, the high-temperature flue gas generated by incinerator incineration is cooled by waste heat boiler, and becomes low-temperature flue gas, which is purified by flue gas purification device and discharged into the atmosphere.

It can be seen that in the above sludge treatment process, the wet sludge with a moisture content of 80% is firstly dried by a sludge dryer to meet the requirements of the incineration standard, and then the dried sludge is incinerated by an incinerator; at the same time , Use the waste heat of the incinerator to heat the heating medium of the dryer, saving energy. Finally, the flue gas purification device of this process can make the tail gas meet the national emission standards.

At present, the sludge in the sewage treatment plant is mechanically dehydrated, and the moisture content is generally about 80%, which is far from the moisture content requirement of sludge incineration. If the traditional sludge drying and granulation system is used, although the moisture content can reach below 20%. , but the cost is often high, and the sludge drying and incineration process provided by the utility model is a feasible path that not only meets the moisture content requirement of sludge incineration but also has a lower cost.

In addition, for the above-mentioned sludge drying and incineration treatment device, steam, hot water or heat-conducting oil can be used as the heat-conducting medium. The incinerator can be a fluidized bed incinerator. The sludge dryer can use paddle sludge dryer. Especially for the sludge dryer used in the present invention, the inventor also proposes a sludge dryer with a novel structure, which can comprehensively improve the sludge drying efficiency.

Specifically, refer to Fig. 2-Fig. 4, which are the front view, side view and top view of the paddle sludge dryer respectively; Fig. 5 is a cross-sectional view along A-A of Fig. 2 .

The paddle sludge dryer includes: jacket 1, housing 2, first paddle shaft 3, second paddle shaft 4, frame 5 and transmission mechanism 6; wherein, the first paddle shaft 3 is fixed axially The first paddle is installed; the second paddle shaft 4 is fixedly installed with the second paddle along the axial direction; the first paddle and the second paddle are mutually meshing structures; the casing 2 is a w-shaped casing.

The shell 2 is fixedly installed on the machine base 5; the installation jacket 1 is sleeved outside the shell 2, so that a heat transfer medium transmission channel is formed between the jacket 1 and the shell 2; the upper end of the heat transfer medium transmission channel is provided with a medium inlet 7. The lower end of the heat conduction medium transmission channel is provided with a medium outlet 8;

The inner cavity of the shell 2 forms a sludge treatment cavity; one end of the sludge treatment cavity is provided with a sludge inlet 9, and the other end of the sludge treatment cavity is provided with a sludge discharge port 10; the first paddle shaft 3 and the second paddle The impeller shafts 4 are all arranged inside the sludge treatment chamber, and are used to rotate under the drive of the transmission mechanism 6, and then stir the sludge inside the sludge treatment chamber; in addition, the first paddle shaft 3 and the second The ends of the paddle shaft 4 are also respectively provided with a heat transfer medium inlet port and a heat transfer medium discharge port for communicating with the heat transfer medium heating station to form a circulating supply medium circuit.

The working principle of the above paddle sludge dryer is:

The paddle sludge dryer uses steam, hot water or heat transfer oil as the heating medium, and the shaft end is equipped with a rotary joint for introducing and exporting the heat medium. The heating medium is divided into two paths, which respectively enter the heat transfer medium transmission channel formed between the jacket 1 and the shell 2 and the paddle shaft inner cavity of the paddle shaft, and heat the body and the paddle shaft at the same time, in the form of conduction heating Heat and dry the material located in the inner cavity of the shell. The materials to be treated are quantitatively and continuously sent to the sludge inlet of the dryer by the screw feeder. After the materials enter the inner cavity of the shell 2, the materials are turned over and stirred by the rotation of the double blades, and the heating medium is continuously updated to make the dryer The body, the paddle and the material are in full contact, and then the material is fully heated to evaporate the surface water contained in the material. At the same time, the material is conveyed in a spiral trajectory with the rotation of the paddle shaft to the discharge port, and continues to be stirred during the conveyance, so that the water seeping out of the sludge continues to evaporate. Finally, the uniformly dried and qualified products are discharged from the discharge port.

For the convenience of use, the paddle sludge dryer is also equipped with a temperature test hole and a sampling port; both the temperature test hole and the sampling port are connected with the shell 2.

It can be seen that the paddle sludge dryer provided by the utility model has the following advantages:

(1) The steam in the paddle sludge dryer does not directly contact with the sludge, the entire drying process of the material is carried out in a closed state, and the organic volatile gas and odor gas are sent to the tail gas treatment device in a closed atmosphere to avoid environmental pollution .

(2) The structure of the paddle sludge dryer effectively improves the sludge drying efficiency;

(3) By setting the temperature test hole and sampling port, the sludge drying situation can be monitored in real time to ensure the safe and stable operation of the paddle sludge dryer.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be considered within the protection scope of the present utility model.

Claims (8)

1. a sludge drying and incinerating treatment unit, is characterized in that, comprising: sludge drier, incinerator, waste heat boiler and smoke eliminator;

Wherein, described sludge drier comprises drying sludge cavity and the 1st heat-conducting medium circulating line; Described drying sludge cavity is provided with into mud mouth and sludge discharging port; Mud mouth is entered for being communicated with the sludge discharging port of mud transfer roller described in described drying sludge cavity; The described sludge discharging port of described drying sludge cavity is used for being communicated with the mud mouth that enters of described incinerator; Described 1st heat-conducting medium circulating line enter heat-conducting medium mouth for being communicated to row's heat-conducting medium mouth of heat-conducting medium heating station; The heat-conducting medium mouth that goes out of described 1st heat-conducting medium circulating line enters heat-conducting medium mouth for what be communicated to heat-conducting medium heating station;

Row's high-temperature flue gas mouth of described incinerator is communicated with the high-temperature flue gas mouth that enters of described waste heat boiler; Described waste heat boiler inside is also provided with the 2nd heat-conducting medium circulating line, described 2nd heat-conducting medium circulating line enter heat-conducting medium mouth for being communicated to row's heat-conducting medium mouth of heat-conducting medium heating station; Described 2nd heat-conducting medium circulating line go out heat-conducting medium mouth for being communicated to the described heat-conducting medium circulating line of described sludge drier;

Described waste heat boiler is the row's of being provided with low-temperature flue gas mouth also; What described row's low-temperature flue gas mouth of described waste heat boiler was communicated to described smoke eliminator enters low-temperature flue gas mouth.

2. sludge drying and incinerating treatment unit according to claim 1, is characterized in that, described sludge drier is blade sludge drier.

3. sludge drying and incinerating treatment unit according to claim 2, it is characterized in that, described blade sludge drier comprises: chuck (1), housing (2), the 1st blade spindle (3), the 2nd blade spindle (4), support (5) and transmission rig (6);

Described housing (2) is fixedly mounted on described support (5); In the described chuck of the sheathed installation in outside (1) of described housing (2), make to form heat-conducting medium transmission path between described chuck (1) and described housing (2); The upper end of described heat-conducting medium transmission path arranges into media port (7), and the lower end of described heat-conducting medium transmission path sets out media port (8);

The inner chamber of described housing (2) forms sludge treatment cavity; One end of described sludge treatment cavity arranges mud inlet (9), and the other end of described sludge treatment cavity arranges mud discharging mouth (10); Described 1st blade spindle (3) and described 2nd blade spindle (4) are all arranged at the inside of described sludge treatment cavity, for rotating under the driving of described transmission rig (6), and then the mud of described sludge treatment inside cavity is stirred; In addition, described 1st blade spindle (3) and the end of described 2nd blade spindle (4) are also respectively arranged with for being communicated with heat-conducting medium heating station for entering heat-conducting medium mouth and arranging heat-conducting medium mouth for medium loop of circulating.

4. sludge drying and incinerating treatment unit according to claim 3, is characterized in that, described 1st blade spindle (3) fixedly mounts the 1st blade vertically; Described 2nd blade spindle (4) fixedly mounts the 2nd blade vertically; Described 1st blade and described 2nd blade are for engaging each other structure.

5. sludge drying and incinerating treatment unit according to claim 3, is characterized in that, described housing (2) is w shell body.

6. sludge drying and incinerating treatment unit according to claim 3, is characterized in that, described blade sludge drier is also configured with temperature test hole and thief hole; Described temperature test hole and described thief hole are all communicated with described housing (2).

7. sludge drying and incinerating treatment unit according to claim 1, is characterized in that, described heat-conducting medium is steam, hot water or thermal oil.

8. sludge drying and incinerating treatment unit according to claim 1, is characterized in that, described incinerator is fluidized bed incinerator.