CN217604106U

CN217604106U - Incinerator with annular heating surface

Info

Publication number: CN217604106U
Application number: CN202221239709.3U
Authority: CN
Inventors: 王平; 刘海峰; 程新; 朱凯; 牛爽; 邵峰; 夏炜; 何佳苇
Original assignee: JIANGSU YANXIN SCI-TECH CO LTD
Current assignee: JIANGSU YANXIN SCI-TECH CO LTD
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-18
Anticipated expiration: 2032-05-23

Abstract

The utility model relates to an annular receives burning furnace that burns of hot side belongs to the technical field who burns burning furnace equipment. The incinerator comprises an incinerator body, wherein a combustor is arranged above the incinerator body, an annular heating surface is additionally arranged in the incinerator body and is installed on a heating surface support, a smoke outlet pipe is arranged in the direction of a smoke outlet of the annular heating surface, an external heating surface is arranged on the smoke outlet pipe, and a boiler barrel is arranged on the rear side of the external heating surface; the annular heating surface is arranged into an annular membrane type wall heating surface structure; the external heating surface comprises a plurality of external heating surface tube bundles which are vertically arranged. The utility model discloses can make the flue gas after the burning condense into the solid when contact annular receives the hot side, fall into and burn burning furnace lower part deposition space, reduce the deposition that gets into the rear portion and receive the hot side, guarantee the long period running that the rear portion received the hot side.

Description

Incinerator with annular heating surface

Technical Field

The utility model relates to an annular is heated burning furnace that burns of face belongs to the technical field who burns burning furnace equipment.

Background

At present, a large amount of waste gas and waste liquid are generated in the production process of industries such as petrochemical industry and the like, the components are complex, the direct discharge can seriously pollute the environment, and the most thorough environment-friendly treatment method is incineration. The energy is provided by fuel such as refinery gas, natural gas and the like, so that organic matters in the waste liquid and the waste gas are fully decomposed into CO ₂ And H ₂ O and release its contained heat. The temperature in the incinerator is controlled to be more than 1000 ℃, so that harmful organic matters in the waste liquid and the waste gas can be completely gasified into CO ₂ And H ₂ And O. Because the heat value of the waste liquid and the waste gas is low, the thorough decomposition needs to be controlled at 1000 ℃, and certain retention time is needed, the incinerator adopts a heat-insulating hearth form with a lining made of refractory castable and heat-insulating castable. After the high-temperature flue gas is discharged out of the incinerator, the waste heat (waste heat) boiler absorbs energy to generate steam, the temperature of the flue gas is reduced, and the flue gas which meets the environmental protection requirement after denitration, desulfurization and dust removal is discharged into the atmosphere.

The waste gas and liquid contain a large amount of Na ⁺ 、Ca ⁺ The components are mixed with SO in the flue gas at high temperature ₃ 、CO ₂ The reaction generates compounds such as sulfate, carbonate and the like, the compounds are sublimated into gas in high-temperature smoke with the temperature of more than 650 ℃, and the gas is chilled and condensed into ash slag with large viscosity when entering a tube bank of a waste heat boiler. These ash residues are firmly condensed on the pipe wall together with the ash residues generated by the combustion of the residual oil of the incinerator. The heat transfer coefficient of the heating surface of the boiler is greatly reduced, the exhaust gas temperature is far higher than the designed value, and even the exhaust gas of the tube bundle is blocked and can not be discharged, so that the whole device stops running. Frequent opening and stopping of the boiler causes accumulation of waste liquid and waste gas to influence production and the service life of the boiler.

Therefore, in order to solve the above-mentioned background problems, it is urgent to develop an incinerator with an annular heating surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of proposing among the above-mentioned background problem, provide an annular receives burning furnace of hot side, reduce the lime-ash and gather in the tube bank, do not block up the tube bank, the continuous life cycle of extension boiler.

The purpose of the utility model is realized like this: an incinerator with an annular heating surface comprises an incinerator body, wherein a combustor is arranged above the incinerator body, the incinerator body is internally provided with the annular heating surface, the annular heating surface is installed on a heating surface support, a smoke outlet pipe is arranged in the direction of a smoke outlet of the annular heating surface, an external heating surface is arranged on the smoke outlet pipe, and a boiler barrel is arranged on the rear side of the external heating surface; the annular heating surface is arranged into an annular membrane type wall heating surface structure; the external heating surface comprises a plurality of external heating surface tube bundles which are vertically arranged.

The annular heating surface comprises a downcomer for introducing a medium, and the downcomer is connected to an annular lower header; a plurality of annular heating surface tube bundles which are arranged annularly are vertically arranged above the annular lower header, and the top of each annular heating surface tube bundle is connected with the annular upper header; the annular upper header is connected with a rising pipe used for discharging media.

Preferably, a metal spraying layer is arranged on the smoke side of the annular heating surface.

Preferably, every two annular heating surface tube bundles are connected through flat steel.

Preferably, the incinerator is of a cylinder structure, a fire-resistant layer is arranged inside the incinerator, and a fire-resistant castable is arranged in the incinerator; the outside is a heat insulation layer and is provided with heat insulation castable.

Preferably, the tube bundle of the external heating surface is a convection tube bundle; and a soot blower is arranged between the convection tube bundles, and the soot blower is arranged to remove dust on the tube bundles.

Preferably, the soot blower is provided as a steam soot blower or a shock wave soot blower.

Preferably, soot blower one side is through wire and PLC controller electric connection, through PLC control soot blower periodic operation, need not dependent manual operation, has practiced thrift the labour greatly.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses an incinerator of annular heating surface, dust in the flue gas after burning meets the annular heating surface in the stove at first, condenses into the solid soon after the chilling, accumulates to a certain extent and falls into the burning furnace lower part deposition space, then the flue gas turns 90 degrees and gets into the external heating surface of stove, can not only reduce the flue gas temperature, can also significantly reduce the deposition that gets into the rear portion heating surface, guarantees the long period running of rear portion heating surface;

the utility model discloses an burning furnace is burnt to annular heating surface is provided with the soot blower between the tube bank of heating surface outside the stove, can regularly blow the ash and detach the dust on the tube bank, further ensures the long-term operation of heating surface outside the stove.

Drawings

Fig. 1 is a schematic view of the overall structure of the incinerator with an annular heating surface according to the present invention.

Fig. 2 is a top view of the annular heating surface of the incinerator with annular heating surface.

FIG. 3 is a schematic view of the specific structure of the annular heating surface inside the furnace of the incinerator with annular heating surface of the present invention.

Among them are: 1. a burner; 2. an incinerator; 3. an annular heating surface; 4. a heated surface support; 5. a drum; 6. a soot blower; 7. an external heating surface;

3.1, a riser; 3.2, an annular upper header; 3.3, an annular heating surface pipeline; 3.4, an annular lower header; 3.5, a downcomer; 3.6, metal spraying coating.

Detailed Description

The invention is described below with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 3, an incinerator with an annular heating surface comprises an incinerator 2, a burner 1 is arranged above the incinerator, an annular heating surface 3 is additionally arranged in the incinerator 2, the annular heating surface 3 is installed on a heating surface support 4, a smoke outlet pipe is arranged in the direction of a smoke outlet of the annular heating surface 3, an external heating surface 7 is arranged on the smoke outlet pipe, and a boiler barrel 5 is arranged on the rear side of the external heating surface 7; the annular heating surface 3 is arranged into an annular membrane wall heating surface structure; the external furnace heating surface 7 comprises a plurality of vertically arranged external furnace heating surface tube bundles.

In the present embodiment, the annular heated surface 3 comprises a downcomer 3.5 for the medium, the downcomer 3.5 being connected to an annular lower header 3.4; a plurality of annular heating surface tube bundles 3.3 which are annularly arranged are vertically arranged above the annular lower collecting box 3.4, and the top of each annular heating surface tube bundle 3.3 is connected with an annular upper collecting box 3.2; the annular upper header 3.2 is connected with an ascending pipe 3.1 for discharging media; the flue gas side of the annular heating surface 3 is provided with a metal spraying layer 3.6, and the arrangement of the metal spraying layer 3.6 increases the smoothness of the heating surface on the basis of not influencing heat transfer, and can reduce the condensation of ash slag on the heating surface.

In the present exemplary embodiment, two annular heating surface tube bundles 3.3 are connected to one another by flat bars.

In this embodiment, the incinerator 2 is a cylinder structure, and has a refractory layer inside and is provided with a refractory castable; the outside is a heat insulation layer and is provided with heat insulation castable.

In this embodiment, the bundle of external furnace heating surfaces of the external furnace heating surface 7 is a convection bundle; a sootblower 6 is also arranged between the convection banks. Exemplarily, the soot blower 6 is a steam soot blower or a shock wave soot blower, one side of the soot blower 6 is electrically connected with the PLC through a wire, and the soot cleaning operation can be realized through the connection of the PLC, so that the long-term work of the heating surface is ensured.

In the embodiment, saturated water in the drum 5 enters the annular lower header 3.4 from the downcomer 3.5 and then enters the annular heating surface tube bundle 3.3 to generate a steam-water mixture;

the steam-water mixture sequentially enters the drum 5 through the annular upper header 3.2 and the ascending pipe 3.1 to be subjected to steam-water separation to generate saturated steam.

In the present embodiment, the medium in the annular heated surface 3 is a steam-water mixture, and the temperature of the working medium may be 250 ℃.

As shown in fig. 3, in this embodiment, the annular upper header 3.2, the annular heating surface tube bundle 3.3 and the annular lower header 3.4 are all located in the cylinder of the incinerator; the down pipes 3.5 and the up pipes 3.1 pass through the incinerator 2 and then are connected with the boiler barrel 5, so that the circulation of steam and water is realized.

The above is only a specific application example of the present invention, and does not set any limit to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides an incinerator of annular heating surface, includes burns burning furnace (2), it is provided with combustor (1) to burn burning furnace top, its characterized in that: an annular heating surface (3) is additionally arranged in the incinerator (2), the annular heating surface (3) is installed on a heating surface support (4), a smoke outlet pipe is arranged in the direction of a smoke outlet of the annular heating surface (3), an external furnace heating surface (7) is arranged on the smoke outlet pipe, and a boiler barrel (5) is arranged on the rear side of the external furnace heating surface (7);

the annular heating surface (3) is arranged into an annular membrane wall heating surface structure;

the external heating surface (7) comprises a plurality of external heating surface tube bundles which are vertically arranged.

2. An incinerator with annular heating surface as claimed in claim 1, wherein: the annular heating surface (3) comprises a downcomer (3.5) for introducing a medium, and the downcomer (3.5) is connected to an annular lower header (3.4);

a plurality of annular heating surface tube bundles (3.3) which are annularly arranged are vertically arranged above the annular lower header (3.4), and the top of each annular heating surface tube bundle (3.3) is connected with an annular upper header (3.2);

the annular upper header (3.2) is connected with a rising pipe (3.1) for discharging media.

3. An incinerator with annular heating surface as claimed in claim 2, wherein: and a metal spraying coating (3.6) is arranged on the smoke side of the annular heating surface (3).

4. An incinerator with annular heating surface as claimed in claim 2, wherein: every two annular heating surface tube bundles (3.3) are connected through flat steel.

5. An incinerator with annular heating surface as claimed in claim 1, wherein: the incinerator (2) is of a cylinder structure, a flame retardant coating is arranged inside the incinerator, and a refractory castable is arranged inside the incinerator; the outside is a heat insulation layer and is provided with heat insulation castable.

6. An incinerator with annular heating surface as claimed in claim 1, wherein: the tube bundle of the external heating surface (7) is a convection tube bundle;

and a soot blower (6) is also arranged between the convection tube bundles.

7. An incinerator with annular heating surface as claimed in claim 6, wherein: the soot blower (6) is set as a steam soot blower or a shock wave soot blower.

8. An incinerator with annular heating surface as claimed in claim 7, wherein: one side of the soot blower (6) is electrically connected with the PLC through a wire.