CN1177083A

CN1177083A - Method for removing fume from boiler and fume-less boiler made by using same

Info

Publication number: CN1177083A
Application number: CN 96112548
Authority: CN
Inventors: 陈存祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-14
Filing date: 1996-09-14
Publication date: 1998-03-25

Abstract

The characteristic lies in that the chimney is eliminated, and the soot circulation pileline system installed with an induced draft fan is substituted for the chimney. The soot is led back through said pipeline to the hearth of the boiler for repeatedly burning until the combustible matter in the soot has been burnt out completely, thus the aim of the invention is implemented. The smokeless boiler made by said method consists of furnace body and soot circulation pipeline system, on the furnace body there is an air collector chamber. Said method is suitable for any boiler and serves important actions for enviromental protection and energy saving.

Description

A kind of method of the flue dust that can eliminate boiler emission and with the less boiler of its manufacturing

The present invention relates to a kind of method of the flue dust that can eliminate boiler emission and, belong to boiler manufacturing technology field with the less boiler of its manufacturing.

At present, on domestic and international boiler manufacturing technology, no matter be bearing boiler or normal-pressure boiler, no matter be vertical or horizontal, or the boiler of other form, no matter form is how to change, the soot emissions mode that boiler produces is consistent substantially, be that the flue dust that boiler combustion produces directly discharges by chimney outside (in the atmosphere), even people are installed device for abatement of smoke and dust additional on chimney, the problem of boiler emission flue dust can not fundamentally give to solve completely, and therefore, boiler in use brings problems such as environmental pollution and energy waste just can not fundamentally solve to society.Thereby; reduce the boiler soot emission amount; improve the thermal efficiency of boiler; make burning as far as possible fully; also can only be comparatively speaking; the general very high boiler of the thermal efficiency; its thermal efficiency is less than 70% also; how to reduce and eliminate the flue dust of boiler emission; improve boiler thermal output; make burning complete as much as possible, thus reach reduce to pollute, protection environment, the purpose of saving the energy have become countries in the world boiler expert and the boiler producers probe into the world subject of solution throughout one's life, the discharging of thoroughly eliminating boiler smoke has become and has troubled human global problem for many years.

Purpose of the present invention is exactly to provide a kind of new method, the new approaches that can eliminate the flue dust of boiler emission for people, and manufactured and designed a kind of less boiler according to this method, certainly, this less boiler is a kind of concrete scheme, new method has generality applicable to any boiler.

The present invention is achieved in that

Method of the present invention is to utilize flue dust flowability capable of circulation, by pipe-line system and be contained in the air-introduced machine on the pipe-line system originally discharged boiler from chimney flue dust and all send back to the most flue dust of its unburned is rekindled, till the residue volatile matter that the coal that circulation repeatedly contains in flue dust produces in burning all burnouts, heat energy is all utilized, be left gases such as non-flammable a spot of carbon dioxide at last, the intermittence of insulation brennschluss constantly in boiler operatiopn, by the emission by exhaust pipe that vent valve is housed that is provided with in the pipe-line system in air, thereby realize eliminating the purpose of the flue dust of boiler emission.

Less boiler of the present invention forms according to the said method manufacturing, there is not chimney on this less boiler, its original chimney is replaced by the flue dust circulating pipe system that air-introduced machine is housed, be provided with wind assembling set above the upper combustion chamber of boiler furnace and between the boiler wind adjusting hole, wind assembling set is surrounded by top row's steel pipe and following row's steel pipe and the inside of boiler wall that is not provided with dividing plate that is welded with dividing plate, wind assembling set is provided with leads to the outer air intake pipe orifice of body of heater, and the steel pipe of wind assembling set all communicates with the hydroecium of boiler.The boiler smoke circulating pipe system is made up of blast pipe, the plug valve that leaks informaton, three-way pipe, conical pipe, bend pipe A, straight tube, bend pipe B, air-introduced machine, blast pipe, wherein, blast pipe is connected with the plug valve upper port, the upper port of three-way pipe is connected with the lower port of plug valve, the lower port of three-way pipe is connected with the exhaust smoke hole at body of heater top, and conical pipe, bend pipe A, straight tube, bend pipe B, air-introduced machine, blast pipe and wind assembling set's air intake pipe orifice are connected successively.

The present invention compared with prior art its advantage is:

Fundamentally solve the problem that boiler soot emission pollutes to environment, make coal combustion complete, heat energy is fully utilized, thereby boiler thermal output is brought up to more than 95%, saved the energy widely, overcome and troubled world's boiler manufacturing industry global problem for many years, the boiler environmental issue has thoroughly been solved, the social benefit highly significant.

Description of drawings is as follows:

Fig. 1 is the structural representation of less boiler of the present invention;

Fig. 2 shows upward view for the A-A of boiler wind assembling set cuts open;

Fig. 3 shows vertical view for the A-A of boiler wind assembling set cuts open;

Fig. 4 shows front view for the B-B of boiler wind assembling set cuts open.

Wherein: the 1--body of heater, the 2--ash output opening, 3--upper combustion chamber hole, the 4--scale cleaning hole, 5--lower combustion chamber hole, the 6--wind adjusting hole, the 7--thermometer, the 8--Pressure gauge, 9--body of heater exhaust smoke hole, the 10--three-way pipe, the 11--plug valve that leaks informaton, the 12--blast pipe, the 13--conical pipe, 14--bend pipe A, the 15--straight tube, 16-bend pipe B, the 17-air-introduced machine, the 18--blast pipe, 19--wind assembling set air intake pipe orifice, 20--wind assembling set, 21 soil shifting openings, the 22--water inlet, the 23--delivery port, 24--water level meter, 25--wind assembling set steel pipe, dividing plate on the 26--wind assembling set steel pipe, the 27--reinforcing bar.

Embodiments of the invention:

The method that can eliminate the flue dust of boiler emission of the present invention can obtain imbody in less boiler of the present invention.Less boiler body of heater of the present invention is that basic engineering forms with number of patent application CN91233214.X and the disclosed boiler furnace of CN9220-2077.9, on this boiler, there is not chimney, its original chimney is replaced by the flue dust circulating pipe system that air-introduced machine (17) is housed, be provided with wind assembling set (20) above the upper combustion chamber of boiler furnace and between the boiler wind adjusting hole (6), wind assembling set is surrounded by a top row's steel pipe and a following wall of inner container of arranging steel pipe and boiler furnace that is not provided with dividing plate that is welded with dividing plate (26), wind assembling set is provided with leads to the outer air intake pipe orifice (19) of body of heater (1), and the steel pipe of wind assembling set (25) all communicates with the hydroecium of body of heater.The boiler smoke circulating pipe system is by blast pipe (12), plug valve (11) leaks informaton, three-way pipe (10), conical pipe (13), bend pipe A (14), straight tube (15), bend pipe B (16), air-introduced machine (17), blast pipe (18) is formed, wherein, blast pipe is connected with the plug valve upper port, the upper port of three-way pipe is connected with the lower port of plug valve, the lower port of three-way pipe is connected with the exhaust smoke hole (9) at body of heater top, the side ports of three-way pipe is connected with conical pipe, conical pipe, bend pipe A, straight tube, bend pipe B, air-introduced machine, blast pipe and wind assembling set's air intake pipe orifice are connected successively.During boiler operatiopn, earlier water is injected by water inlet (22) and fill it up with, coal adds from upper combustion chamber hole (3) and lower combustion chamber hole (5), ignition, and startup air-introduced machine (17), the plug valve that will leak informaton closes flue dust is flowed out from steam vent, the beginning circulating combustion, the most material of unburned is got back to wind assembling set with flue dust by the flue dust circulating pipe system, enter in the burner hearth and burn away, a large amount of air of bringing in the burner hearth with air-introduced machine make the burner hearth internal combustion vigorous, make flue dust through behind the circulating combustion repeatedly, the residue volatile matter that produces during contained coal combustion all burns totally non-flammable gases such as only remaining small part carbon dioxide, open the plug valve that leaks informaton in the intermittent time of boiler operatiopn insulation burn-out and be discharged to by blast pipe in the body of heater outer air, close the plug valve that leaks informaton then and wait for burning next time.

Claims

1, a kind of method that can eliminate the flue dust of boiler emission, it is characterized in that: this method is to utilize flue dust flowability capable of circulation, by pipe-line system and be contained in the air-introduced machine on the pipe-line system originally discharged boiler from chimney flue dust all send back to make in the boiler furnace its unburned most flue dust rekindle, till the residue volatile matter that the coal that circulation repeatedly contains in flue dust produces in burning all burnouts, heat energy is all utilized, be left gases such as non-flammable a spot of carbon dioxide at last, the intermittence of insulation brennschluss constantly in boiler operatiopn, by the emission by exhaust pipe that vent valve is housed that is provided with in the pipe-line system in air, thereby realize eliminating the purpose of the flue dust of boiler emission.

2, a kind of less boiler, it is characterized in that: do not have chimney on this boiler, its original chimney is replaced by the flue dust circulating pipe system that air-introduced machine is housed, be provided with wind assembling set above the upper combustion chamber of boiler furnace and between the boiler wind adjusting hole, wind assembling set is surrounded by a top row's steel pipe and a following wall of inner container of arranging steel pipe and boiler furnace that is not provided with dividing plate that is welded with dividing plate, wind assembling set is provided with leads to the outer air intake pipe orifice of body of heater, and the steel pipe of wind assembling set all communicates with the hydroecium of body of heater.The boiler smoke circulating pipe system is made up of blast pipe, the plug valve that leaks informaton, three-way pipe, conical pipe, bend pipe A, straight tube, bend pipe B, air-introduced machine, blast pipe, wherein, blast pipe is connected with the plug valve upper port, the upper port of three-way pipe is connected with the lower port of plug valve, the lower port of three-way pipe is connected with the exhaust smoke hole at body of heater top, the side ports of three-way pipe is connected with conical pipe, and conical pipe, bend pipe A, straight tube, bend pipe B, air-introduced machine, blast pipe and wind assembling set's air intake pipe orifice are connected successively.