CN202002300U

CN202002300U - Vertical-type multi-backfiring furnace

Info

Publication number: CN202002300U
Application number: CN2011200102488U
Authority: CN
Inventors: 孙伯龙; 孙亚琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-14
Filing date: 2011-01-14
Publication date: 2011-10-05
Anticipated expiration: 2021-01-14

Abstract

The utility model relates to a vertical-type multi-backfiring furnace, which comprises a furnace body consisting of a hearth and a furnace wall, wherein the furnace wall is an interlayer furnace water tank, a plurality of smoke-fire pipes are arranged inside the interlayer furnace water tank of the furnace body, the top and the bottom of the furnace body are respectively provided with an upper smoke chamber and a lower smoke chamber, the smoke-fire pipes are communicated with the upper smoke chamber and the lower smoke chamber, the upper smoke chamber is provided with a chimney, an upper heat preserving water tank and a lower heat preserving water tank are respectively arranged outside the upper and the lower smoke chambers, and the upper and the lower heat preserving water tanks are communicated with each other through a heat preserving water tank communicating pipe which passes through and is connected with the interior of the interlayer furnace water tank. The upper and the lower heat preserving water tanks are adopted to absorb the heat of the upper and the lower smoke chambers and to provide preheated water to the interlayer furnace water tank, and the multiple backfiring and heat exchanging of the smoke can be completed through the smoke-fire pipe by matching the upper and the lower smoke chambers, so the heat transforming efficiency of the furnace can be maximally improved, and the energy consumption can be reduced. The vertical-type multi-backfiring furnace has a compact structure, a reasonable design, low manufacturing cost and use cost and a long service life.

Description

Vertical repeatedly back firing boiler

Technical field

The utility model relates to a kind of vertical counter-burning boiler, is a kind of high energy-conservation vertical repeatedly back firing boiler specifically.

Background technology

Conventional boiler adopts the direct burning coal of vertical directly burning type and by flue gas heat exchange, heat utilization efficiency is low, and energy resource consumption is big, the use cost height.For energy savings, improve the thermal efficiency, conversion improves existing vertical boiler to flue gas heat, increases water pipe or water tank in the sidewall of boiler or flue, increases the heat exchange area of flue gas and water pipe, water tank, thus the raising heat utilization efficiency.As number of patent application is 201010225546.9 disclosed vertical quartic reverse-burning boilers, adopt furnace sandwich to cooperate the upper and lower smoke-box of body of heater to finish four anti-burnings heat exchange of hot flue gas by three groups of smoke pipes, effectively improved the boiler hot conversion efficiency, but thereon, down smoke-box to change anti-burning place thermal loss still bigger, energy-saving effect is limited.

Summary of the invention

In order to solve the deficiency of vertical back firing boiler in the prior art, the purpose of this utility model provide a kind of simple in structure, reasonable in design, can make full use of the vertical repeatedly back firing boiler that the boiler overall structure realizes thermal power transfer, good energy-conserving effect.

In order to achieve the above object, the technical solution adopted in the utility model is: a kind of vertical repeatedly back firing boiler, comprise the body of heater of forming by burner hearth and furnace wall, the furnace wall is the interlayer boiler water tank, be provided with many pyrotechnics pipes in the interlayer boiler water tank of body of heater, body of heater top and bottom are respectively equipped with upper and lower smoke-box, many pyrotechnics pipes are communicated with upper and lower smoke-box, last smoke-box is provided with chimney, its technical characterstic is that described upper and lower smoke-box is respectively arranged with upper and lower attemperater outward, and upper and lower attemperater wears long and is connected on being interconnected attemperater communicating pipe in the interlayer boiler water tank.

Further, described attemperater down is communicated with interlayer boiler water tank bottom through boiler water inlet pipe, and last attemperater is provided with the attemperater water inlet; Or attemperater is communicated with interlayer boiler water tank bottom through boiler water inlet pipe on described, and following attemperater is provided with the attemperater water inlet; Described interlayer boiler water tank bottom is provided with sewage draining exit.

Again further, be provided with upper and lower combustion chamber in the described burner hearth, upper combustion chamber top is communicated with air inlet, the upper combustion chamber bottom is communicated with lower combustion chamber top through upper fire-grating, the lower combustion chamber bottom is provided with lower fire grating, be provided with upper furnace door between upper fire-grating and lower combustion chamber, the lower combustion chamber bottom is communicated with smoke-box down through lower fire grating, and following smoke-box bottom is provided with lower furnace door.

After adopting above technical scheme, the beneficial effect that the utility model reaches is:

1, upper and lower combustion chamber is set in turn in the burner hearth from top to bottom, upper combustion chamber's combustion residue is fallen into lower combustion chamber through upper fire-grating, the residue that falls through the completing combustion of upper furnace door discharge section, imperfect combustion residue burns away in lower combustion chamber, after lower fire grating fall into down smoke-box and discharge by lower furnace door, reach making full use of of boiler oil, energy savings;

2, upper and lower smoke-box is provided with upper and lower attemperater outward, the heat that distributes at the upper and lower smoke-box of boiler is absorbed by upper and lower attemperater, upper and lower water tank by be communicated with attemperater communicating pipe the back by boiler water inlet pipe to interlayer boiler water tank supplement boiler water, the initial inflow temperature height of boiler, help improving the boiler operating efficiency, energy-saving effect is obvious, and constantly carries out moisturizing by upper and lower attemperater in the interlayer boiler water tank, interlayer boiler water tank internal gas pressure is stable, has ensured the normal operation of boiler; The sewage draining exit of interlayer boiler water tank can be discharged the dirt of boiler operatiopn postprecipitation, and the interlayer boiler water tank is less scaling, need not maintain by annual sour boiling out with alkaline, reduces use cost, improves service life;

3, the plates of stopping of organizing are set more respectively in upper and lower smoke-box upper and lower smoke-box is separated into a plurality of little smoke-boxes, utilize many pyrotechnics pipes to be connected in series a plurality of little smoke-boxes burner hearth is communicated with the repeatedly anti-sintering structure of formation with chimney, finally by discharging the white cigarette of trace in the chimney, 37-38 ℃ of throat temperature, the burner hearth burning produces the heat overwhelming majority and is absorbed in anti-sintering structure, heat absorption efficient height, good energy-conserving effect.

The utility model adopts upper and lower attemperater to absorb the heat of the upper and lower smoke-box of boiler and provides preheating to supply water to the interlayer boiler water tank, cooperate upper and lower smoke-box repeatedly instead to burn heat exchange by what the pyrotechnics pipe was finished hot flue gas, improved the boiler hot conversion efficiency to greatest extent, cut down the consumption of energy, compact conformation, reasonable in design, make, use cost is low, long service life.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: body of heater 1, burner hearth 2, upper fire-grating 21, upper furnace door 22, lower fire grating 23, interlayer boiler water tank 3, pyrotechnics pipe 31, sewage draining exit 32, last smoke-box 4, following smoke-box 5, lower furnace door 51, air inlet 6, chimney 7, last attemperater 8, boiler water inlet pipe 81, following attemperater 9, attemperater water inlet 91, attemperater communicating pipe 10.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples

Vertical repeatedly back firing boiler shown in Figure 1 mainly comprises burner hearth 2, upper fire-grating 21, upper furnace door 22, lower fire grating 23, interlayer boiler water tank 3, pyrotechnics pipe 31, sewage draining exit 32, goes up smoke-box 4, following smoke-box 5, lower furnace door 51, air inlet 6, chimney 7, goes up attemperater 8, boiler water inlet pipe 81, following attemperater 9, attemperater water inlet 91 and attemperater communicating pipe 10.Burner hearth 2 peripheries of body of heater 1 are provided with interlayer boiler water tank 3, many pyrotechnics pipes 31 vertically are set in the interlayer boiler water tank 3, the bottom of interlayer boiler water tank 3 is provided with sewage draining exit 32, the top of burner hearth 2 and bottom are provided with upper and lower smoke-box 4,5 respectively, be communicated with on the last smoke-box 4 chimney 7 is set, following smoke-box 5 is communicated with burner hearth 2, is separated into a plurality of little smoke-boxes by the plate of stopping in the upper and lower smoke-box, and the little smoke-box of the many upper and lower smoke-boxes 4,5 of pyrotechnics pipe 31 serial connections makes burner hearth and chimney be communicated with to become repeatedly anti-sintering structure; Be provided with air inlet 6, upper fire-grating 21, upper furnace door 22 and lower fire grating 23 in the burner hearth 2 from top to bottom successively, following smoke-box 5 is provided with the lower furnace door 51 that is communicated with burner hearth 2; Upper and lower smoke-box 4,5 peripheries are respectively equipped with upper and lower attemperater 8,9, last attemperater 8 is interconnected through passing interlayer boiler water tank 3 attemperater communicating pipe 10 with following attemperater 9, last attemperater 8 is communicated with interlayer boiler water tank 3 through boiler water inlet pipe 81, and following attemperater 9 is provided with attemperater water inlet 91.

When this boiler uses, air inlet is combustion-supporting to the burner hearth air intake, fuel combustion on the upper fire-grating in the burner hearth, combustion residue falls to lower fire grating through upper fire-grating, the residue of completing combustion is discharged by upper furnace door, and imperfect combustion residue smoke-box under falling into after the burning fully on the lower fire grating is discharged by lower furnace door, in the fuel combustion process, the interlayer boiler water tank of burner hearth and its periphery carries out heat exchange, and combustion product gases repeatedly instead burns with the interlayer boiler water tank through pyrotechnics pipe, upper and lower smoke-box and carries out heat exchange; Combustion gas when the upper and lower smoke-box and upper and lower attemperater carry out heat exchange, water body is heated after boiler water inlet pipe carries out supply water supply to the interlayer boiler water tank in the upper and lower attemperater, this boiler can utilize combustion product gases to carry out heat exchange fully, maximally utilise heat, energy-saving and cost-reducing, have general promotional value.

Claims

1. vertical repeatedly back firing boiler, comprise the body of heater of forming by burner hearth (2) and furnace wall, the furnace wall is interlayer boiler water tank (3), be provided with many pyrotechnics pipes (31) in the interlayer boiler water tank of body of heater, body of heater top and bottom are respectively equipped with upper and lower smoke-box (4,5), many pyrotechnics pipes are communicated with upper and lower smoke-box, last smoke-box is provided with chimney (7), it is characterized in that: described upper and lower smoke-box (4,5) the outer upper and lower attemperater (8,9) that is respectively arranged with, upper and lower attemperater wears long and is connected on being interconnected attemperater communicating pipe (10) in the interlayer boiler water tank (3).

2. vertical repeatedly back firing boiler according to claim 1 is characterized in that: described attemperater down is communicated with interlayer boiler water tank bottom through boiler water inlet pipe, and last attemperater is provided with the attemperater water inlet; Or attemperater is communicated with interlayer boiler water tank bottom through boiler water inlet pipe on described, and following attemperater is provided with the attemperater water inlet.

3. vertical repeatedly back firing boiler according to claim 1 is characterized in that: described interlayer boiler water tank (3) bottom is provided with sewage draining exit (32).

4. vertical repeatedly back firing boiler according to claim 1, it is characterized in that: described burner hearth is provided with upper and lower combustion chamber in (2), upper combustion chamber top is communicated with air inlet, the upper combustion chamber bottom is communicated with lower combustion chamber top through upper fire-grating (21), the lower combustion chamber bottom is provided with lower fire grating (23), be provided with upper furnace door (22) between upper fire-grating and lower combustion chamber, the lower combustion chamber bottom is communicated with smoke-box (5) down through lower fire grating, and following smoke-box bottom is provided with lower furnace door (51).