CN215175102U

CN215175102U - Non-contact quenching system for hazardous waste incineration system

Info

Publication number: CN215175102U
Application number: CN202120979883.0U
Authority: CN
Inventors: 董强; 孙继常; 熊安华
Original assignee: Shanghai Sifang Wuxi Boiler Engineering Co ltd
Current assignee: Shanghai Sifang Wuxi Boiler Engineering Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-12-14
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a non-contact quenching system for a hazardous waste incineration system, which adopts a vertical boiler shell as a non-contact quenching device, and the vertical boiler shell is connected with a cooling water unit; the vertical boiler shell consists of a lower tube plate, an upper tube plate and a boiler shell, and inner cavities are formed in the lower tube plate, the upper tube plate and the boiler shell; a plurality of vertical smoke pipes are arranged inside the vertical boiler shell; the top end of the smoke tube penetrates through the upper tube plate, and the bottom end of the smoke tube is connected with the sewage discharge tube after being collected; the cooling water unit comprises a drum, a steam-water outlet pipe and a downcomer; the boiler barrel is connected with the top of the vertical boiler shell through a steam-water outlet pipe; the drum is connected with the side wall of the vertical boiler shell through a downcomer. The system designed by the application can realize non-contact quenching, and avoids the regeneration of dioxin substances.

Description

Non-contact quenching system for hazardous waste incineration system

Technical Field

The utility model belongs to the technical field of the environmental protection technique and specifically relates to a non-contact rapid cooling system that is used for useless system of burning of danger.

Background

7.6.1.7 pieces of high-temperature flue gas generated by a specified incineration disposal system in the technical guide of hazardous waste disposal engineering (HJ2042-2014) should be treated by rapid cooling, the temperature of the flue gas should be reduced to below 200 ℃ in 1S, the residence time of the flue gas in a temperature region of 200-500 ℃ is reduced, and the generation or secondary generation of dioxin is prevented.

At present, a quenching device of a dangerous waste incineration system adopts a contact type quenching tower device, and high-temperature flue gas with the temperature of about 550 ℃ coming from a waste heat boiler after dangerous waste incineration is rapidly cooled to be below 200 ℃.

The quenching tower adopts a mode of directly cooling by spraying water, the flue gas flowing through the tower is directly contacted with the sprayed liquid after atomization, the mass transfer speed and the heat transfer speed are high, the sprayed liquid is quickly vaporized to take away a large amount of heat, and the temperature of the flue gas can be quickly reduced to be below 200 ℃, so that the regeneration of dioxin-like substances is avoided.

But the flue gas is directly contacted with the sprayed liquid after atomization by adopting water spraying direct cooling, so that the subsequent treatment is not facilitated, and secondary pollution is easily caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the non-contact quenching system for the hazardous waste incineration system can realize non-contact quenching and avoid the regeneration of dioxin substances.

The utility model discloses the technical scheme who adopts as follows:

a non-contact quenching system for a hazardous waste incineration system adopts a vertical boiler shell as a non-contact quenching device, and the vertical boiler shell is connected with a cooling water unit; the vertical boiler shell consists of a lower tube plate, an upper tube plate and a boiler shell, and inner cavities are formed in the lower tube plate, the upper tube plate and the boiler shell; a plurality of vertical smoke pipes are arranged inside the vertical boiler shell; the top end of the smoke tube penetrates through the upper tube plate, and the bottom end of the smoke tube is connected with the sewage discharge tube after being collected;

the cooling water unit comprises a drum, a steam-water outlet pipe and a downcomer; the boiler barrel is connected with the top of the vertical boiler shell through a steam-water outlet pipe; the drum is connected with the side wall of the vertical boiler shell through a downcomer.

Furthermore, a steam pocket cavity is arranged at the upper part of the vertical boiler shell and used for collecting steam generated in the vertical boiler shell.

Further, the upper pipe plate is composed of a horizontal plate surface and a vertical plate surface, the vertical plate surface is vertically installed on the edge of the horizontal plate surface, and the joint of the vertical plate surface and the horizontal plate surface is subjected to chamfering treatment and connected through a smooth curved surface.

Further, the upper edge of the vertical plate surface is fixedly connected with the top of the boiler shell through an upper header, so that a steam drum cavity is formed at the top of the vertical boiler shell, steam generated in the boiler shell is accumulated in the steam drum cavity, and a steam outlet pipe is arranged at the top of the upper header; the steam outlet pipe is connected with a steam-water outlet pipe.

Furthermore, the outlet end of the downcomer is arranged in the boiler shell, and the outlet end of the downcomer is provided with a water inlet baffle.

Furthermore, a plurality of diagonal draw bars are respectively and fixedly arranged between the lower tube plate and the inner wall surface of the boiler barrel and between the upper tube plate and the inner wall surface of the boiler shell.

The utility model has the advantages that:

1. the non-contact rapid cooling system for dangerous useless system of burning that this application designed adopts vertical pot shell as non-contact rapid cooling device, realizes handling the flue gas rapid cooling, prevents that dioxin from producing or secondary generation, and simultaneously, the flue gas carries out the heat transfer cooling from the flue with the water in the pot shell, can avoid direct contact.

2. The utility model provides an utilize the cooling water unit can provide cold water for in the vertical pot shell, realize with the heat transfer cooling of flue gas, can also carry out the heat transfer cooling to the steam that vertical pot shell produced, the hot water after the heat transfer cooling can also be retrieved and carry out the heat utilization, realizes the recycle of energy.

Drawings

FIG. 1 is a schematic diagram of the non-contact quench system configuration of the present application;

FIG. 2 is an enlarged view of a portion of the non-contact quench system configuration of the present application;

in the figure, the boiler comprises a boiler barrel 1, a boiler barrel 2, a steam-water outlet pipe 3, a heat insulation layer 4, a diagonal draw bar 5, a smoke pipe 6, an inner cavity 7, a boiler shell 8, a blow-off pipe 9, a water inlet baffle 10, a downcomer 11, a lower tube plate 12, an upper tube plate 13, steam 14, an upper header 15, a steam outlet pipe 16 and a steam pocket cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in figure 1, a non-contact quenching system for a hazardous waste incineration system adopts a vertical pot shell as a non-contact quenching device, and the vertical pot shell is connected with a cooling water unit.

The vertical boiler shell consists of a lower tube plate 11, an upper tube plate 12 and a boiler shell 7, wherein the bottom of the boiler shell 7 is fixedly connected with the lower tube plate 11, the top of the boiler shell 7 is fixedly connected with the upper tube plate 12, and an inner cavity 6 is formed in the lower tube plate 11, the upper tube plate 12 and the boiler shell 7; a plurality of vertical smoke pipes 5 are arranged inside the vertical boiler shell; the top end of the smoke tube 5 penetrates through the upper tube plate 12 and is used as an inlet of high-temperature smoke; the bottom end of the smoke pipe 5 is connected with a sewage discharge pipe 8 after being collected, and the sewage discharge pipe is used as an outlet of smoke after heat exchange. In order to ensure the pressure-bearing strength inside the vertical boiler shell, a plurality of diagonal draw bars 4 are respectively and fixedly arranged between the lower tube plate 11 and the inner wall surface of the boiler barrel 1 and between the upper tube plate 12 and the inner wall surface of the boiler shell 7.

The cooling water unit comprises a drum 1, a steam-water outlet pipe 2 and a downcomer 10; one end of the steam-water outlet pipe 2 is communicated with the boiler barrel 1, and the other end of the steam-water outlet pipe 2 is connected with the upper tube plate 12 and is communicated with the inner cavity 3 of the vertical boiler shell; the steam 13 gathered on the upper tube plate 12 is introduced into the drum 1 through the steam-water outlet pipe 2. One end of a downcomer 10 is communicated with the drum 1, and the other end of the downcomer 10 is connected with a boiler shell 7 of the vertical boiler shell and is communicated with an inner cavity 3 of the vertical boiler shell; the outlet end of the downcomer 10 is arranged inside the boiler shell 7, and the outlet end of the downcomer 10 is provided with a water inlet baffle 9; when the boiler works, the boiler barrel 1 injects cold water into the inner cavity 3 through the downcomer 10, and the boiler barrel 1 is also provided with a steam output pipeline.

When the whole system works, high-temperature flue gas is injected from top to bottom into the flue pipe 5, heat exchange is generated between the high-temperature flue gas and water in the inner cavity 3, steam is generated after the heat exchange between the water in the inner cavity 3 and the high-temperature flue gas, the steam enters the boiler barrel 1 through the steam-water eduction pipe 2, low-temperature water is stored in the boiler barrel 1, steam-water separation is generated in the boiler barrel 1, the separated steam is input into a hot user end from a steam output pipeline, and the full utilization of waste heat is realized.

On the basis of the design, in order to improve the stability of the whole system, the vertical boiler shell is optimally designed, as shown in figure 2; the upper tube plate 12 is composed of a horizontal plate surface and a vertical plate surface, the vertical plate surface is vertically installed on the edge of the horizontal plate surface, and the joint of the vertical plate surface and the horizontal plate surface is chamfered and connected through a smooth curved surface. The upper edge of the vertical plate surface is fixedly connected with the top of the boiler shell 7 through an upper header 14, a steam drum cavity 16 is further formed at the top of the vertical boiler shell, steam 13 generated in the boiler shell 7 is accumulated in the steam drum cavity 16, and a steam outlet pipe 15 is arranged at the top of the upper header 14; the steam outlet pipe 15 is connected with the steam-water outlet pipe 2; the steam 13 in the steam pocket cavity 16 is discharged through the steam outlet pipe 15; the problem of steam accumulation at the upper flat pipe plate 12 is effectively solved, the expansion difference generated by different heating of the upper flat pipe plate 12 and the smoke pipe 5 is avoided, and the high-pressure water leakage accident in the boiler shell caused by the tensile fracture of the welding seam at the welding position of the smoke pipe and the pipe plate is effectively reduced.

The above embodiments are only used for illustrating the design ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all the equivalent changes or modifications made according to the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.

Claims

1. A non-contact quenching system for a hazardous waste incineration system is characterized in that a vertical boiler shell is used as a non-contact quenching device and is connected with a cooling water unit; the vertical boiler shell consists of a lower tube plate (11), an upper tube plate (12) and a boiler shell (7), and an inner cavity (6) is formed inside the lower tube plate (11), the upper tube plate (12) and the boiler shell (7); a plurality of vertical smoke pipes (5) are arranged inside the vertical boiler shell; the top end of the smoke tube (5) penetrates through the upper tube plate (12), and the bottom end of the smoke tube (5) is connected with a sewage discharge pipe (8) after being converged;

the cooling water unit comprises a drum (1), a steam-water outlet pipe (2) and a downcomer (10); the boiler barrel (1) is connected with the top of the vertical boiler shell through a steam-water outlet pipe (2); the boiler barrel (1) is connected with the side wall of the vertical boiler shell through a downcomer (10).

2. A non-contact quench system for hazardous waste incineration system according to claim 1, characterized in that a steam drum chamber (16) is provided in the upper part of the vertical shell for collecting the steam (13) generated in the vertical shell.

3. The non-contact quenching system for hazardous waste incineration system of claim 2, wherein the upper tube plate (12) is composed of a horizontal plate and a vertical plate, the vertical plate is vertically installed on the edge of the horizontal plate, and the joint of the vertical plate and the horizontal plate is chamfered and connected by a smooth curved surface.

4. The non-contact quenching system for hazardous waste incineration systems according to claim 3, characterized in that the upper edge of the vertical plate surface is fixedly connected with the top of the boiler shell (7) through an upper header (14), so that a steam drum cavity (16) is formed at the top of the vertical boiler shell, steam (13) generated in the boiler shell (7) is accumulated in the steam drum cavity (16), and a steam outlet pipe (15) is arranged at the top of the upper header (14); the steam outlet pipe (15) is connected with the steam-water outlet pipe (2).

5. A non-contact quench system for hazardous waste incineration systems according to any of claims 1-4, characterized in that the outlet end of the downcomer (10) is placed inside the boiler shell (7) and that a water inlet baffle (9) is provided at the outlet end of the downcomer (10).

6. The non-contact quenching system for hazardous waste incineration system according to claim 5, characterized in that a plurality of diagonal draw bars (4) are fixedly installed between the lower tube plate (11) and the inner wall surface of the boiler barrel (1) and between the upper tube plate (12) and the inner wall surface of the boiler shell (7), respectively.