CN2554550Y

CN2554550Y - Guide arch coal-fired boiler

Info

Publication number: CN2554550Y
Application number: CN 02236423
Authority: CN
Inventors: 黄全刚; 李泽明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-22
Filing date: 2002-05-22
Publication date: 2003-06-04
Anticipated expiration: 2012-05-22

Abstract

The utility model relates to a burning type boiler for hot water or steam production by coal, which is a monolayer or a multilayer and a horizontal type or a vertical type. The utility model is characterized in that one or more guiding arch which has the same direction as a reflecting arch is arranged in each combustion chamber, a guiding hole is opened at one lengthways end of each guiding arch, the guiding holes of two adjacent guiding arches are respectively arranged at lengthways different ends of the corresponding guiding arch, thereby a smoke radiation heat transfer channel is formed between the reflecting arch and the first guiding arch, and among multiple guiding arches. The travel route of high-temperature gas in the furnace is extended, the travel route is three to five times of the ordinary boiler, and the work time of the high-temperature gas in the furnace is long. The utility model has the advantages that the smoke and dust discharge is almost zero, the sulfur dioxide discharge can be reduced by 50 to 70 percent; the efficiency is high, the energy can be saved, the coal saving rate is about 25 percent, and the thermal efficiency is 85 percent; the noise is low; the range of fuel which can be used is wide; the size is small, the installation and the operation are convenient.

Description

Coal boiler with guide arch

Technical field:

The utility model is the boiler that a kind of briquet is produced hot water or steam.

Background technology:

Application number is that 99223807.2 Chinese patent file has been announced " a kind of vertical efficient does not have the flue dust molded coal boiler ", its structure is the reflection arch cap of a taper of installing in the burner hearth above coal feeding hole, have the inclined hole vertical on the reflection arch cap, be equiped with rotating channel between burner hearth and the Heat Room with the conical surface.It claims owing to having adopted the reflection arch of inclined hole cap and rotating channel are arranged, and coal can fully be burnt, and improved the coefficient of heat transfer, and smoke discharge amount is low.But high-temperature fuel gas stroke in this kind molded coal boiler is still short, working application time is limited in the stove, thereby can not improve the thermal efficiency (the highest can only reach 74%) of boiler to greatest extent, soot emissions still higher (minimum can only reach 79.5 milligrams/cubic metre), and this structure is unfavorable to using low-carbon (LC) fuel (comprising colm, spoil, shale, brown coal, bone coal etc.).

Summary of the invention:

The purpose of this utility model provides and a kind ofly can improve the thermal efficiency to greatest extent and reduce soot emissions, and helps using the coal boiler with guide arch of low-carbon (LC) fuel.

Structure of the present utility model: be the horizontal or vertical molded coal boiler of single or multiple lift.It is characterized in that: be provided with one or more, identical guiding arch in each combustion chamber with the reflection arch direction, encircleing longitudinally in each guiding, an end has a guide hole, guide hole on two adjacent guiding are encircleed is located at the different longitudinally ends of corresponding guiding arch respectively, thereby between reflection arch and first guiding arch, and form the gas radiation heat exchanger channels between a plurality of guiding arch.For a gas radiation heat exchanger channels, the cross section at its vertical diverse location place can be identical, thereby also can reduce to quicken flowing of flue gas gradually.The thickness of guiding arch is preferably less than the thickness of reflection arch.

In the utility model device: 1, because between reflection arch and first guiding arch, and formed the gas radiation heat exchanger channels between a plurality of guiding arches, high-temperature fuel gas stroke in stove is prolonged, its stroke is 3～5 times of plain cylindrical furnace, promptly allow the working application time of high-temperature fuel gas in stove prolong greatly, improved the efficiency of combustion of boiler.2, the guiding arch can also make the flue gas moment burning that produces in the stove, can remove black smoke effectively.3, guiding arch is in the guiding high-temperature fuel gas, self be subjected to the baking face heat build-up of high-temperature fuel gas after, with the acting up and down in stove of photothermal form, effectively inspire the burning of bituminous coal again, combustion gas is converted into heat energy.4, high-temperature fuel gas forms " it " font combustion curve in several gas radiation heat exchanger channels, and the volume of smoke that bituminous coal is produced in stove can become high-temperature fuel gas and does work under photothermal initiation.5, anthracite is in the stove internal combustion, and fugitive constituent is low, and the fixed carbon height, under the effect of guiding arch, mainly with fixed carbon form the hyperthermia radiation hot-fluid in stove, diffusion flows and plays a role.6, low-carbon (LC) fuel (comprising colm, spoil, shale, brown coal, bone coal etc.) can be optimized burning in stove, its mechanism is except that the radiant heat of guiding arch inspires a small amount of fugitive constituent and fixed carbon in its cigarette inferior, and the principal element that can produce high-temperature fuel gas is a large amount of non-carbon in cigarette ash part inferior.

The utility model advantage is: 1, in the combustion process, and basic smokeless and dust free discharging, and can reduce sulfur dioxide (SO2) emissions 50～70%; 2, energy-efficient, coal saving rate is about 25%, and the thermal efficiency can be up to 85%; 3, low hot-tempered sound: 4, because of no flue dust, reduce the investment of dust arrester, and can save a large amount of water for dust removal, reduce the water pollution that dust waste water causes; 6, fuel range is wide, burning bituminous coal, anthracite, colm, spoil, shale, brown coal, bone coal and industrial slags etc., and resource obtains comprehensive utilization, and 7, volume is little, be convenient to install and use.

Description of drawings:

Fig. 1 looks cross-sectional view for the master of embodiment 1.

Fig. 2 is the left optic zone semi-section structural representation of embodiment 1.

Fig. 3 is with local step profile structural representation for overlooking of embodiment 1.

Fig. 4 looks cross-sectional view for the master of embodiment 2.

Fig. 5 is the left optic zone semi-section structural representation of embodiment 2.

Fig. 6 is with the part section structural representation for overlooking of embodiment 2.

Fig. 7 looks cross-sectional view for the left side of embodiment 3.

The specific embodiment: see embodiment 1～3.

Embodiment 1: see Fig. 1～3, for adopting the double-barrel transverse formula fixed grate horizontal water pipe molded coal boiler of the utility model structure, total two combustion chambers up and down, be provided with a guiding

arch

9 or 15 parallel in each combustion chamber, have a

circular guide hole

28 or 27 at guiding

arch

9 or 15 vertical outer ends with reflection arch 10 or 18.1 is lower drum among the figure, and 2 is the back water screen tube, and 3 is bottom right collection case, 4 are following isobaric wind storehouse, and 5 is lower fire grating, and 6 and 13 is moulded coal, 7 is lower link, and 8 is lower furnace door, and 9 are lower floor's guiding arch, 10 is lower floor's reflection arch, and 11 is last isobaric wind storehouse, and 12 is last connecting rod, 14 is upper furnace door, and 15 are upper strata guiding arch, and 16 is side water wall tube, 17 is upper fire-grating, and 18 is the upper strata reflection arch, and 19 is the top slag-drip opening, 20 is upper collecting chamber, and 21 is air outlet valve, and 22 is upper drum, 23 is last electric pushrod, 24 are following electric pushrod, and 25 is lower-left collection case, and 26 is motor, 27 is last guide hole, and 28 are following guide hole.

Embodiment 2: see Fig. 4～6, for adopting the horizontal moulded coal water-tube boiler of two drum longitudinal fixed grates of the utility model structure, two combustion chambers about total, be provided with two parallel with reflection arch 46, the equidistant guiding arches (44 and 45) that are provided with in each combustion chamber, have a circular guide hole 54 at guiding arch 44 vertical inner ends, have a circular guide hole 55 at guiding arch 45 vertical outer ends.29 is upper drum among the figure, and 30 is left furnace chamber, and 31 is left water screen tube, and 32 are convection bank, 33 are the push pedal door, and 34 is connecting rod, and 35 is right push rod device, and 36 is lower drum, 37 is right collection case, and 38 is left side collection case, and 39 is water screen tube, and 40 is isobaric wind storehouse, 41 is left chamber fire bars, and 42 is moulded coal, and 43 is left push rod device, and 47 is the back water screen tube, 48 is air outlet valve, and 49 is right furnace chamber, and 50 is right water screen tube, 51 is right ventricle's fire bars, and 52 is cleanout door, and 53 for pushing away the coal platform.

Embodiment 3: see Fig. 7, be the double chamber's single drum extreme misery pipe mixed type coal boiler that adopts the utility model structure, total two combustion chambers up and down are provided with a guiding arch 56 or 57 identical with reflection arch 72 or 73 directions in each combustion chamber.58 is gas outlet valve among the figure, and 59 is the pot bucket, and 60 is smoke pipe, and 61 is moulded coal, and 62 is last air inlet, 63 is the heat convection pipe, and 64 are the collection case, and 65 are following air inlet, and 66 is moulded coal, and 67 is last moving grate, 68 is last isobaric wind storehouse, and 69 is bow member, and 70 are following moving grate, and 71 are following isobaric wind storehouse.

Above embodiment only is described further the utility model, and scope of the present utility model is not subjected to the limitation of illustrated embodiment.

Claims

1, a kind of coal boiler with guide arch, be single or multiple lift, horizontal or vertical, it is characterized in that: be provided with one or more, identical guiding arch in each combustion chamber with the reflection arch direction, encircleing longitudinally in each guiding, an end has a guide hole, guide hole on two adjacent guiding arches is located at the different longitudinally ends of corresponding guiding arch respectively, thereby between reflection arch and first guiding arch, and formation gas radiation heat exchanger channels between a plurality of guiding arch.

2,, it is characterized in that the cross section at the vertical diverse location of gas radiation heat exchanger channels place is identical as the said coal boiler with guide arch of claim 1.

3,, it is characterized in that the cross section at the vertical diverse location of gas radiation heat exchanger channels place reduces gradually as the said coal boiler with guide arch of claim 1.

4, as the said coal boiler with guide arch of claim 1, the thickness of the arch that it is characterized in that leading is less than the thickness of reflection arch.