CN2338077Y

CN2338077Y - Implement for eliminating smoke and removing dust

Info

Publication number: CN2338077Y
Application number: CN 98237153
Authority: CN
Inventors: 张成基
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-26
Filing date: 1998-03-26
Publication date: 1999-09-15
Anticipated expiration: 2008-03-26

Abstract

The utility model relates to an implement for eliminating smoke and removing dust. A thermal insulation and holding gap is arranged between the refractory arch of the combustion chamber of a vertical furnace used for burning coal and a furnace wall. An accumulation heating cover is arranged on the vertical furnace, and a block is arranged above a furnace chamber. The gas passage is communicated with an air inlet chamber by an air inlet pipe, and the air inlet pipe and the diameter of the furnace wall form an acute angle. The utility model has the advantage that the powder coal can be burnt, the secondary combustion is sufficient, the dust separation is thorough, and the recovery of thermal energy is improved.

Description

Device for abatement of smoke and dust

The utility model belongs to environmental protection technical field, relates in particular to a kind of novel device for abatement of smoke and dust that is used for aspects such as boiler, cellar for storing things stove, incinerator.

Be the serious environmental pollution that solution boiler, cellar for storing things stove, incinerator flue dust cause, prior art has proposed multiple scheme.Though variously do, wet scrubber can remove quite a few dust in the flue gas, can't solve not clean-burning those compositions in the flue gas, so though many boilers, store stove, incinerator through dedusting, but still black smoke is continuous.Black smoke to be thoroughly eliminated, the smoke evacuation second-time burning must be made.But existing these second-time burning formula device for abatement of smoke and dust, what have uses fuel oil, and cost is higher; Though the burning moulded coal that has, unreasonable structure, furnace temperature is not enough, thereby does not reach desirable second-time burning effect, and dust separation is not thorough, and easy dust stratification results in blockage in the burner hearth, can't remove dust stratification, and energy recovery is few.

The purpose of this utility model will overcome the deficiency of above-mentioned prior art exactly, provides a kind of and can use diffusing coal, second-time burning is abundant, dust separation is thorough, improve the novel device for abatement of smoke and dust of energy recovery.

The purpose of this utility model is achieved in that a kind of device for abatement of smoke and dust, is made of coal-fired vertical heater, exhaust gases passes and dust storage chamber, it is characterized in that being provided with between combustion chamber refractory arch and the furnace wall heat-insulation and heat-preservation gap.

Realize the above-mentioned device for abatement of smoke and dust of the utility model purpose, its feature also can be that refractory arch top, combustion chamber is provided with heat gathering cover, or is provided with smoke baffle above burner hearth.

Realize the above-mentioned device for abatement of smoke and dust of the utility model purpose, its feature can also be the outside, inlet air plenum furnace wall that exhaust gases passes is looped around fire bars below, and at least two are all clockwise or counterclockwise inwardly with the acutangulate blast pipe of furnace wall diameter exhaust gases passes are communicated with inlet air plenum.

Force the oxygen supply hole in order to realize that better the purpose of this utility model, exhaust gases passes are provided with.

Realize the above-mentioned device for abatement of smoke and dust of the utility model purpose, its feature can also be to establish one deck fire bars between combustion chamber and the dust storage chamber again, constitutes incineration chamber on dust storage chamber.

The technical solution of the utility model, owing to taked measures such as heat-insulation and heat-preservation gap, heat gathering cover, smoke baffle and pressure oxygen supply hole, increased substantially furnace temperature, thereby made the flue gas second-time burning very abundant, and except that burning high-quality moulded coal, also available coal fire anti-burning mode uses the general coal that looses; Owing to take blast pipe inwardly tiltedly to blow mode, flue gas forms eddy current in inlet air plenum, thereby it is comparatively thorough that grit is separated, and can avoid dust to stop up burner hearth, improves the energy recovery effect.

Fig. 1 is the principle schematic of an embodiment of the utility model.

Fig. 2 is the principle schematic of another embodiment of the utility model.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Referring to Fig. 1, the device for abatement of smoke and dust of this embodiment adopts common vertical small sized water tube boilers bottom to install the structure of exhaust gases passes and dust storage chamber additional.Furnace wall 1 is the sleeve of a therebetween water.Respectively establish a water inlet pipe 2 and outlet pipe 16 in the upper and lower of furnace wall.The top of furnace wall 1 is provided with discharge duct 3.Be provided with heat-insulation and heat-preservation gap 10 between the refractory arch 8 of combustion chamber 9 and the furnace wall 1.The top of combustion chamber refractory arch 8 is provided with water-jacket typ heat gathering cover 7.The top of eclipsed form horizontal water tube burner hearth 6 is provided with water-jacket typ smoke baffle 4.Exhaust gases passes 12 is looped around the outside, below inlet air plenum 14 furnace walls of fire bars 11, and blast pipe 13 is all clockwise or counterclockwise inside and furnace wall diameter angle at 45, and exhaust gases passes is communicated with inlet air plenum 14.Exhaust gases passes 12 is provided with forces oxygen supply hole 18.Soaking type dust storage chamber 15 is located at the bottom of inlet air plenum 14.In addition, also be provided with closed cleanout door 19, closed ash removing opening 16 and 20.

During use, boiler or the cellar for storing things flue gas that goes out of fire grate and the fresh air of forcing oxygen supply hole 18 to be blown into enter inlet air plenum 14 by exhaust gases passes 12 through blast pipes 13 together, form eddy current, and grit separates with flue gas and falls into dust storage chamber 15.Remainder passes fire bars 11 from inlet air plenum 14, enters combustion chamber 9 and realizes second-time burning, and filter the remaining grit in the flue gas in the coal seam.Owing to be provided with heat-insulation and heat-preservation gap 10 between combustion chamber 9 and the furnace wall 1, cut off the heat exchange of furnace wall 1 with refractory arch 8, heat gathering cover 7 has prolonged the time of staying of high temperature gas flow again, can make the combustion chamber keep very high temperature, helps flue gas fully burning in the combustion chamber.Flue gas is after the second-time burning of combustion chamber, and rising enters eclipsed form horizontal water tube burner hearth 6, carries out heat exchange with water pipe 5.Smoke baffle 3 has once prolonged the time of staying of high temperature gas flow, has improved heat exchange effect, has reduced exhaust gas temperature, and the thin dirt in the flue gas is dropped in the burner hearth 6.Dust stratification in dust storage chamber 15 and the burner hearth 6 can be removed by cleanout door 19 and ash removing opening 20.

Referring to Fig. 2, this embodiment adopts common vertical water tube boiler to install the dust storage chamber structure additional, establishes one deck fire bars 21 again between combustion chamber 9 and the dust storage chamber 15, constitutes incineration chamber 22.Can be used for the smoke abatement and dust control of combustible incineration aspect.

Claims

1, a kind of device for abatement of smoke and dust is made of coal-fired vertical heater, exhaust gases passes and dust storage chamber, it is characterized in that being provided with between combustion chamber refractory arch and the furnace wall heat-insulation and heat-preservation gap.

2, a kind of device for abatement of smoke and dust is made of coal-fired vertical heater, exhaust gases passes and dust storage chamber, it is characterized in that refractory arch top, combustion chamber is provided with heat gathering cover.

3, a kind of device for abatement of smoke and dust is made of coal-fired vertical heater, exhaust gases passes and dust storage chamber, it is characterized in that the burner hearth top is provided with smoke baffle.

4, a kind of device for abatement of smoke and dust, constitute by coal-fired vertical heater, exhaust gases passes and dust storage chamber, it is characterized in that exhaust gases passes is looped around the outside, inlet air plenum furnace wall of fire bars below, at least two are all clockwise or counterclockwise inwardly with the acutangulate blast pipe of furnace wall diameter exhaust gases passes are communicated with inlet air plenum.

5,, it is characterized in that exhaust gases passes is provided with pressure oxygen supply hole according to claim 1,2,3 or 4 described device for abatement of smoke and dust.

6, a kind of device for abatement of smoke and dust is made of coal-fired vertical heater, dust storage chamber, it is characterized in that establishing one deck fire bars between combustion chamber and the dust storage chamber again, constitutes incineration chamber on dust storage chamber.