CN221005080U - Novel waste heat boiler system capable of being used for quick furnace lifting of garbage furnace - Google Patents

Abstract

The utility model provides a novel waste heat boiler system capable of being used for quick furnace lifting of a garbage furnace, which is characterized in that an incinerator (1), a radiation channel (2), a horizontal channel (3) and a tail economizer (4) are sequentially communicated, wherein the radiation channel (2) is formed by a membrane water-cooled wall, and a first radiation channel (203), a second radiation channel (204) and a third radiation channel (205) which are in serpentine communication are further arranged in the membrane water-cooled wall in a separated manner; the flue gas flows out from the incinerator (1), and sequentially flows through a first radiation channel (203), a second radiation channel (204), a third radiation channel (205) and a horizontal channel (3) to enter a tail economizer (4); a heating adjusting mechanism (7) is further arranged on the radiation channel (2); the heating adjusting mechanism (7) can enable the flue gas to cross a preset radiation channel, so that heat exchange between the flue gas and the water cooling wall is reduced. The utility model can ensure that the temperature of the main steam reaches the rated value when the waste incineration exhaust-heat boiler just starts up so as to meet the operation requirement of the steam turbine.

Description

Novel waste heat boiler system capable of being used for quick furnace lifting of garbage furnace

Technical Field

The utility model relates to the technical field of waste heat boilers, in particular to a novel waste heat boiler system capable of being used for quick furnace lifting of a waste furnace.

Background

At present, for a newly built boiler or a boiler after overhaul in the domestic waste incineration industry, when the boiler just starts to start, the main steam temperature is low, and the boiler cannot immediately reach the rated parameters, so that the main steam generated by the boiler enters into the steam temperature of a steam turbine to be low (the steam turbine is low in efficiency or the steam turbine is difficult to steam in parallel), main steam emptying is needed to be carried out through a fire steam exhaust pipeline of the boiler (the steam is wasted, and the water supplementing quantity of the boiler is required to be large enough at the same time), or condensation recovery is carried out through a recovery system of the steam turbine (the water can be recovered, but the efficiency of equipment is affected).

For a common boiler with main steam parameters of 400 ℃ or 450 ℃, the rated temperature requirement of the main steam can not be met until the boiler is operated for at least one week or even two months after starting the boiler.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides a novel waste heat boiler system capable of being used for quick furnace lifting of a waste furnace, which can ensure that the temperature of main steam of the waste incineration waste heat boiler just reaches a rated value when the waste incineration waste heat boiler is just lifted so as to meet the operation requirement of a steam turbine.

The aim of the utility model is achieved by the following technical scheme:

The utility model provides a novel exhaust-heat boiler system that can be used to quick play stove of garbage furnace, includes incinerator, radiation passage, horizontal channel and afterbody economizer that communicates in proper order, wherein:

The radiation channel is composed of membrane water-cooled walls, a first water-cooled wall and a second water-cooled wall are further arranged in the radiation channel, and a first radiation channel, a second radiation channel and a third radiation channel which are communicated in a serpentine manner are arranged in the radiation channel in a spacing manner; the flue gas flows out from the incinerator and sequentially flows through the first radiation channel, the second radiation channel, the third radiation channel and the horizontal channel to enter the tail economizer;

The radiation channel is also provided with a heating adjusting mechanism; the heating adjusting mechanism can enable the flue gas to cross a preset radiation channel, so that heat exchange between the flue gas and the water cooling wall is reduced.

Optionally or preferably, further comprising a burner; the number of the burners is two, and the burners are symmetrically arranged on the side wall water wall pipes of the third radiation channel; the burner is communicated with the third radiation channel; and a sealing heat-insulating structure is arranged at the connection part of the burner and the third radiation channel.

Optionally or preferably, the sealed heat-insulating structure comprises a sealed box, a fastener, a heat-insulating body and a sealed cover plate; the sealing box is positioned between the radiation channel and the burner and sleeved on a connecting pipe of the radiation channel and the burner; the fastener is arranged at one end of the sealing box, which is far away from the radiation channel, and is used for being in butt joint and fixation with the sealing cover plate; the outer wall of the heat preservation body is matched with the inner wall of the sealing box; the sealing cover plate is fixedly arranged at one end of the heat insulation body; after the heat preservation body is deeply arranged in the sealing box, the sealing cover plate can be fixed with the fastening piece through screw connection.

Optionally or preferably, the heating adjusting mechanism comprises an upper header, a lower header, a connecting pipe and an adjustable baffle; the upper header and the lower header are both arranged in the middle of the second radiation channel, and are communicated through a plurality of connecting pipes, so that flue gas can directly flow into the third radiation channel from the second radiation channel through gaps among the connecting pipes;

The adjustable baffle plate is arranged in the radiation channel, one end of the adjustable baffle plate is fixed on the rotating shaft, and the other end of the adjustable baffle plate can swing under the action of the executing mechanism;

When the included angle between the adjustable baffle and the vertical direction reaches the maximum value, the smoke which originally flows along the second radiation channel can be shielded, so that the smoke directly flows into the third radiation channel from the connecting pipe; when the included angle between the adjustable baffle and the vertical direction is 0 degree, the space formed by the connecting pipe can be sealed, so that the flue gas can continuously flow along the second radiation channel for heat exchange.

Optionally or preferably, the rotatable angle of the adjustable baffle is 0-40 degrees, so as to be beneficial to the falling of deposited ash on the adjustable baffle.

Optionally or preferably, further comprising a ceiling tube panel system and a drum; the ceiling tube panel system and the boiler barrel are arranged at the top of the radiation channel and the horizontal channel;

The ceiling tube panel system comprises a steam eduction tube, a sewage eduction tube, a eduction main pipe and a ceiling tube membrane wall; the top of the boiler barrel is connected with a steam eduction tube, and the lower part of the boiler barrel is connected with a sewage eduction tube; the steam eduction pipe and the sewage eduction pipe are converged and connected into a eduction main pipe, and the other end of the eduction main pipe is connected with an inlet of the film wall of the ceiling pipe; the outlets of the membrane walls of the ceiling pipes are respectively communicated with a first branch pipe and a second branch pipe; the other end of the first branch pipe is connected to a steam-water conversion system; the other end of the second branch pipe is connected with a rising pipe of the horizontal channel;

The steam eduction tube, the sewer eduction tube, the eduction main pipe, the branch pipe I and the branch pipe II are respectively provided with a valve.

Optionally or preferably, ash hoppers are arranged at bottoms of the second radiation channel, the third radiation channel and the horizontal channel.

Based on the technical scheme, the following technical effects can be produced:

The novel waste heat boiler system capable of being used for quick furnace lifting of the waste furnace provided by the utility model can increase the flue gas temperature before the superheater, ensure that the main steam temperature of the waste incineration waste heat boiler just reaches a rated value when the waste incineration waste heat boiler is started, meet the operation requirement of a steam turbine, and can be normally used for other projects after the boiler is stable in operation.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a system architecture of the present utility model;

FIG. 2 is a schematic structural view (cross-sectional view) of a sealed insulation structure according to the present utility model;

FIG. 3 is a schematic view (cross-sectional view) of a heat receiving adjusting mechanism according to the present utility model;

FIG. 4 is a schematic view of a connecting pipe according to the present utility model;

FIG. 5 is a schematic diagram of a ceiling tube panel system of the present utility model;

in the figure: 1-incinerator, 2-radiation channel, 3-horizontal channel, 4-tail economizer, 5-burner, 6-sealing heat preservation structure, 7-heating adjusting mechanism, 8-ceiling tube panel system, 9-drum, 10-ash bucket, 11-ash bucket,

201-First water-cooling wall, 202-second water-cooling wall, 203-first radiation channel, 204-second radiation channel, 205-third radiation channel, 206-side wall water-cooling wall pipe,

601-Sealing box, 602-fastening piece, 603-heat insulator, 604-sealing cover plate,

701-An upper header, 702-a lower header, 703-connecting pipes, 704-adjustable baffles, 705-a rotating shaft, 706-an actuating mechanism, 801-a steam outlet pipe, 802-a sewage outlet pipe, 803-an outlet header pipe, 804-a ceiling pipe film wall, 805-a first branch pipe, 806-a second branch pipe and 807-a steam-water conversion system.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

As shown in fig. 1-3:

The embodiment provides a novel exhaust-heat boiler system that can be used to quick play of garbage stove, including the burning furnace 1, radiation passage 2, horizontal channel 3 and afterbody economizer 4 that communicate in proper order, wherein:

The radiation channel 2 is formed by membrane water-cooled walls, a first water-cooled wall 201 and a second water-cooled wall 202 are further arranged in the radiation channel 2, and a first radiation channel 203, a second radiation channel 204 and a third radiation channel 205 which are communicated in a serpentine manner are arranged in the radiation channel 2; the flue gas flows out of the incinerator 1, and sequentially flows through the first radiation channel 203, the second radiation channel 204, the third radiation channel 205 and the horizontal channel 3 to enter the tail economizer 4;

a plurality of heating surfaces are arranged in the horizontal channel 3 and the tail economizer 4;

The radiation channel 2 is also provided with a heating adjusting mechanism 7; the heating adjusting mechanism 7 can enable the flue gas to cross a preset radiation channel, so that heat exchange between the flue gas and the water cooling wall is reduced.

In this embodiment, the burner 5 is also included; the number of the burners 5 is two, and the burners are symmetrically arranged on the side wall water wall pipes 206 of the third radiation channel 205; the side wall water wall pipe 206 is provided with a combustion head for accessing the combustor 5; the burner 5 is in communication with a third radiation channel 205; the connection part between the burner 5 and the third radiation channel 205 is provided with a sealing heat-insulating structure 6.

In this embodiment, the sealed insulation structure 6 includes a sealing box 601, a fastener 602, an insulation body 603, and a sealing cover 604; the sealing box 601 is positioned between the radiation channel 2 and the burner 5 and sleeved on a connecting pipe of the radiation channel 2 and the burner 5; the fastener 602 is arranged at one end of the sealing box 601 far away from the radiation channel 2 and is used for being in butt joint and fixation with the sealing cover plate 604; the outer wall of the heat preservation body 603 is matched with the inner wall of the sealing box 601; the sealing cover plate 604 is fixedly arranged at one end of the heat preservation body 603; after the heat insulator 603 penetrates into the sealing box 601, the sealing cover plate 604 can be fixed with the fastener 602 through screwing.

In this embodiment, the heat receiving and adjusting mechanism 7 includes an upper header 701, a lower header 702, a connecting pipe 703, and an adjustable baffle 704; the upper header 701 and the lower header 702 are arranged in the middle of the second radiation channel 204, and the upper header 701 and the lower header 702 are communicated through a plurality of connecting pipes 703, so that the flue gas can directly flow into the third radiation channel 205 from the second radiation channel 204 through gaps between the connecting pipes 703;

The adjustable baffle 704 is arranged in the radiation channel 2, one end of the adjustable baffle 704 is fixed on the rotating shaft 705, and the other end can swing under the action of the executing mechanism 706;

When the included angle between the adjustable baffle 704 and the vertical direction reaches the maximum value, the smoke which originally flows along the second radiation channel 204 can be shielded, so that the smoke directly flows into the third radiation channel 205 from the connecting pipe 703; when the included angle between the adjustable baffle 704 and the vertical direction is 0 degrees, the space formed by the connecting pipe 703 can be sealed, so that the flue gas can continue to flow along the second radiation channel 204 for heat exchange; specifically, the adjustable baffle 704 and the exposed surface of the rotating shaft 705 are both provided with castable, so that the high-temperature corrosion of the boiler flue gas to the castable can be prevented.

In this embodiment, the rotatable angle of the adjustable baffle 704 is 0 to 40 °, so that the deposited ash on the adjustable baffle 704 can be ensured to fall down in time without being deposited.

In the embodiment, the system also comprises a ceiling pipe screen system 8 and a boiler barrel 9; the ceiling tube panel system 8 and the boiler drum 9 are arranged on top of the radiation channel 2 and the horizontal channel 3;

The ceiling pipe screen system 8 comprises a steam eduction pipe 801, a sewage eduction pipe 802, a eduction header 803 and a ceiling pipe film wall 804; the top of the boiler barrel 9 is connected with a steam eduction tube 801, and the lower part of the boiler barrel 9 is connected with a sewage eduction tube 802; the steam eduction pipe 801 and the sewage eduction pipe 802 are converged and connected into a eduction main 803, and the other end of the eduction main 803 is connected with an inlet of a ceiling pipe film wall 804; the outlets of the membrane walls 804 of the ceiling pipes are respectively communicated with a first branch pipe 805 and a second branch pipe 806; the other end of the first branch pipe 805 is connected to a steam-water conversion system 807; the other end of the second branch pipe 806 is connected with a rising pipe of the horizontal channel 3;

Valves are arranged on the steam eduction pipe 801, the sewage eduction pipe 802, the eduction main 803, the branch pipe I805 and the branch pipe II 806.

In this embodiment, ash hoppers 11 are disposed at the bottoms of the second radiation passage 204, the third radiation passage 205 and the horizontal passage 3.

The workflow of this embodiment is:

When the boiler just starts up, the main steam temperature is low, the burner 5 is started, so that the smoke temperature entering the horizontal channel 3 is improved, when the steam temperature reaches the standard, the burner 5 is closed, the combustion head of the burner 5 is pulled out from the main steam temperature, and then the heat preservation body 603 is butted with the sealing box 601, and the heat preservation pouring material is designed, so that the heat preservation effect of the boiler can be effectively ensured;

When the boiler just starts, the adjustable baffle 704 and the rotary shaft 705 can be adjusted to open an angle of 0-40 degrees, the flue gas amount entering the third radiation channel 205 from the second radiation channel 204 can be adjusted, and the amount of flue gas entering the third radiation channel 205 from the lower part of the second radiation channel 204 is reduced, so that the heat absorption capacity of water cooling walls of the second radiation channel 204 and the third radiation channel 205 is reduced, and the flue gas temperature of an inlet of the horizontal channel 3 is improved;

When the boiler is just started, the saturated steam led out from the drum 9 flows through the inside of the ceiling-tube-film wall 804 when the flue gas temperature of each part of the whole boiler is low, and even if the ceiling-tube-film wall 804 functions as a superheater. The steam flow is as follows: the boiler drum 9, the steam eduction tube 801, the eduction header 803, the ceiling tube membrane wall 804 and the branch tube 805 are connected with the original saturated steam eduction tube of the boiler, and the steam is introduced into the low-temperature superheater. Throughout the process, the valve set of the downcomer outlet pipe 802 at the lower part of the drum 9 is closed, and the valve set of the sub-pipe two 806 of the ceiling pipe film wall 804 is closed.

After the boiler stably runs, the flue gas temperature of each part of the whole boiler is high, the boiler does not need a large amount of superheater area, and in order to reduce the heat absorption capacity of the superheater, saturated water led out by the boiler barrel 9 flows through the inside of the ceiling tube film wall 804, namely the ceiling tube film wall 804 acts as a water cooling wall. The steam-water flow is as follows: the boiler drum 9, the drain pipe eduction pipe 802, the eduction pipe assembly 803, the ceiling pipe membrane wall 804 and the branch pipe two 806, the steam in the steam-water mixture changed into after the water-cooling wall absorbs heat is collected to the ascending pipe above the two side walls of the horizontal channel of the boiler, enters the steam drum, and completes the circulation. During the whole process, the valve set for placing the 702 boiler barrel top steam eduction tube 801 into the valve set is closed, and the valve set for placing the ceiling tube film wall 804 into the first branch tube 805 is closed.

Through the exchange of valves, the effects of circulating steam (heating steam, improving the temperature rise of superheated steam) or circulating saturated water (heating water, reducing the steam heat absorption capacity of a superheater and reducing the temperature rise of superheated steam) in the membrane wall 804 of the ceiling pipe are realized, so that the difference of the areas of heated parts required by the boiler in the time of just starting and in the different periods of the subsequent stable operation is satisfied.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims (7)

1. Novel exhaust-heat boiler system that can be used to rubbish stove to play stove fast, its characterized in that: including incinerator (1), radiation channel (2), horizontal channel (3) and afterbody economizer (4) that communicate in proper order, wherein:

The radiation channel (2) is formed by membrane water-cooled walls, a first water-cooled wall (201) and a second water-cooled wall (202) are further arranged in the radiation channel (2), and a first radiation channel (203), a second radiation channel (204) and a third radiation channel (205) which are in serpentine communication are arranged in the radiation channel (2) in a separated mode; the flue gas flows out from the incinerator (1), and sequentially flows through a first radiation channel (203), a second radiation channel (204), a third radiation channel (205) and a horizontal channel (3) to enter a tail economizer (4);

A heating adjusting mechanism (7) is further arranged on the radiation channel (2); the heating adjusting mechanism (7) can enable the flue gas to cross a preset radiation channel, so that heat exchange between the flue gas and the water cooling wall is reduced.

2. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 1, wherein: also comprises a burner (5); the number of the burners (5) is two, and the burners are symmetrically arranged on the side wall water wall pipes (206) of the third radiation channel (205); the burner (5) is in communication with a third radiant channel (205); and a sealing heat-insulating structure (6) is arranged at the connection part of the burner (5) and the third radiation channel (205).

3. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 2, wherein: the sealing heat-insulating structure (6) comprises a sealing box (601), a fastening piece (602), a heat-insulating body (603) and a sealing cover plate (604); the sealing box (601) is positioned between the radiation channel (2) and the burner (5) and sleeved on a connecting pipe of the radiation channel (2) and the burner (5); the fastener (602) is arranged at one end of the sealing box (601) far away from the radiation channel (2) and is used for being in butt joint and fixation with the sealing cover plate (604); the outer wall of the heat preservation body (603) is matched with the inner wall of the sealing box (601); the sealing cover plate (604) is fixedly arranged at one end of the heat preservation body (603); after the heat insulator (603) penetrates into the sealing box (601), the sealing cover plate (604) can be fixed with the fastener (602) through screw connection.

4. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 1, wherein: the heating adjusting mechanism (7) comprises an upper header (701), a lower header (702), a connecting pipe (703) and an adjustable baffle (704); the smoke gas can directly flow into the third radiation channel (205) from the second radiation channel (204) through gaps among the connecting pipes (703) by communicating the upper header (701) with the lower header (702) through the connecting pipes (703);

The adjustable baffle plate (704) is arranged in the radiation channel (2), one end of the adjustable baffle plate (704) is fixed on the rotating shaft (705), and the other end can swing under the action of the executing mechanism (706);

When the included angle between the adjustable baffle plate (704) and the vertical direction reaches the maximum value, the smoke which originally flows along the second radiation channel (204) can be shielded, so that the smoke directly flows into the third radiation channel (205) from the connecting pipe (703); when the included angle between the adjustable baffle plate (704) and the vertical direction is 0 degree, the space formed by the connecting pipe (703) can be sealed, so that the flue gas can continuously flow along the second radiation channel (204) for heat exchange.

5. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 4, wherein: the rotatable angle of the adjustable baffle plate (704) is 0-40 degrees, so that the dust deposited on the adjustable baffle plate (704) can fall down easily.

6. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 1, wherein: the system also comprises a ceiling pipe screen system (8) and a boiler barrel (9); the ceiling tube panel system (8) and the boiler barrel (9) are arranged at the tops of the radiation channel (2) and the horizontal channel (3);

The ceiling tube panel system (8) comprises a steam eduction tube (801), a sewage eduction tube (802), a eduction header pipe (803) and a ceiling tube membrane wall (804); the top of the boiler barrel (9) is connected with a steam eduction tube (801), and the lower part of the boiler barrel (9) is connected with a sewage eduction tube (802); the steam eduction pipe (801) and the sewage eduction pipe (802) are converged and connected into a eduction main pipe (803), and the other end of the eduction main pipe (803) is connected with an inlet of a ceiling pipe film wall (804); the outlets of the membrane walls (804) of the ceiling pipes are respectively communicated with a first branch pipe (805) and a second branch pipe (806); the other end of the first branch pipe (805) is connected to a steam-water conversion system (807); the other end of the secondary branch pipe (806) is connected with a rising pipe of the horizontal channel (3);

Valves are arranged on the steam eduction tube (801), the sewage eduction tube (802), the eduction main tube (803), the branch tube I (805) and the branch tube II (806).

7. The novel waste heat boiler system for quick furnace lifting of a waste furnace according to claim 1, wherein: the bottoms of the second radiation channel (204), the third radiation channel (205) and the horizontal channel (3) are respectively provided with an ash bucket (11).