CN2542983Y

CN2542983Y - Vertical oxygen-enriched coal-fired pollutionless boiler

Info

Publication number: CN2542983Y
Application number: CN 02234698
Authority: CN
Inventors: 母鑫; 母丹; 陈萍; 陈宁; 姜颖; 陈丹; 刘岩; 母荣兴
Original assignee: 母荣兴
Priority date: 2002-05-11
Filing date: 2002-05-11
Publication date: 2003-04-02
Anticipated expiration: 2012-05-11

Abstract

The utility model provides a vertical coal-fired boiler of sufficient oxygen and environment protection, relating to the manufacturing technology of boilers. The utility model intends to tackle the problems of air pollution caused by the coal-fired boiler, because of the unreasonable structure of the boiler, cannot burn the coal fully in operation so that soot discharge concentration exceeds national standard for environment protection. The boiler, in structure, mainly comprises a shell, a furnace and a combustion chamber, etc. The boiler adopts double fire grates, which presses from the upside and burns in the underside, and guarantees plentiful oxygen is supplied when coal burns to achieve the goal of eliminating soot and meeting the environmental requirement. The utility model is suitable for heating and tea bath boilers.

Description

Vertical oxygen-enriched coal-fired environment-protection boiler

The utility model relates to the boiler manufacturing technology, is the coal-fired environment-protection boiler of a kind of vertical double fire grate oxygen enrichment specifically.

At present, the minitype vertical type coal-burning boiler that China uses does not have the smoke abatement and dust control facility basically, and boiler structure is unreasonable, and the coal burning that is in operation is insufficient, causes smoke dust discharge concentration to surpass national environmental standard, causes serious atmosphere pollution.

The purpose of this utility model is to want to provide a kind of double-layer grate oxygen enrichment coal-fired environment-protection boiler, by measures such as oxygen supply and air blast, coal is fully burnt, and solves the problem that boiler soot emission concentration surpasses national standard.

The technical solution of the utility model is as follows:

This boiler structurally, mainly by furnace shell, flue, combustion chambers etc. are partly formed, many heat pipes of welding on the flue, absorb high-temperature flue gas and conduct heat, the flue top connects impact tube, and the flue bottom is the combustion chamber, the combustion chamber has two fire doors, water jacket is equipped with on top, combustion chamber, and the center ovens comb uses as fire grate, and furnace grate tube top is the primary zone of boiler, for coal is fully burnt, on furnace grate tube top, be equipped with and send oxygen hose, install additional send oxygen hose be because, solid-fuelled burning, be made of a series of successive stages, they are: preheating, dry, volatile matter separate out the generation with coke and the burning of volatile matter and coke.Experiment shows, begin to go out volatile matter to destructive distillation from the fuel drying, so that volatile matter burns substantially, and the required time is very short, only account for 10% of fuel whole burning times, and over-emitting black exhaust is exactly during this period of time, and volatile matter is not fully due to the burning.Send oxygen hose so install additional, it is fully burnt.

Be to save operating cost, can be behind coal oxygenation in burning time of 10%, all the other 90% times, use ajutage in the installing of boiler higher slice, rely on air blast, adopts lower ventilation flow rate, air-supply is regulated in layering, makes combustion chamber maintenance pressurized firing.Through the primary zone, tiny carbon granules drops on the fire grate of bottom, burns away, and promptly improves chamber temperature, can save energy again.Be the burning time of prolong smoke and guarantee dust removing effects, boiler adopts that malleation is counter burns, and flue gas enters flue from chimney arch both sides, combustion chamber, discharges out of the furnace by impact tube.

The utility model has the advantages that: at the coal seam upper space, fuel gas is fully burnt, adopt anti-burning of double-layer grate pressure-fired, promptly improved the thermal efficiency, reach the purpose of smoke abatement and dust control again, make it to reach environmental protection requirement by oxygenation.The utility model is applicable to tea bath and heating boiler.

Below in conjunction with accompanying drawing, the utility model is further explained:

Figure one is that structural representation figure two of the present utility model is the partial sectional view of combustion chamber

From figure one and figure two as can be known: by end socket 5, cylindrical shell 7, form furnace shell, have observation door 2, firing door 3, scale cleaning hole 13, furnace shell bottom on the furnace shell and connect on base ring 18, the base ring and have shoot door 1; Impact tube 4 bottoms connect flue 8, flue connect be welded with on combustion chamber 9, the flue chimney arch 16 is arranged in heat pipe 6, the combustion chamber, water jacket 10 is arranged, furnace grate tube 12, furnace grate tube top are equipped with oxygen deliverng pipe 11, ajutage 17, bottom, combustion chamber are equipped with casting furnace grate 14, furnace shell and junction, bottom, combustion chamber blowoff valve 15 is housed.

Claims

A kind of vertical oxygen-enriched coal-fired environment-protection boiler mainly partly is made up of furnace shell, flue, combustion chamber etc.; It is characterized in that: this stove constitutes double-layer grate by furnace grate tube and fire grate, in primary zone, furnace grate tube top, installs oxygen deliverng pipe additional, at boiler higher slice installing ajutage.