CN2416965Y

CN2416965Y - Dry/wet two method type whirlwind dust remover for vertical natural air supply type coal boiler

Info

Publication number: CN2416965Y
Application number: CN 00205108
Authority: CN
Inventors: 朱蕴安
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-14
Filing date: 2000-02-14
Publication date: 2001-01-31
Anticipated expiration: 2010-02-14

Abstract

The utility model relates to a dry/wet two method type whirlwind dust remover for a vertical natural air supply type coal boiler, the casing is composed of an upper dust remover body and a lower dust storage bucket which is in a conical funnel shape, the lower part of the dust storage bucket is provided with a dust discharge water pipe, a dust receiving bucket at the center is in a conical funnel shape, and the bottom of the dust receiving bucket is provided with an oblique pipe which is communicated with the dust storage bucket. An annular spraying pipe is arranged on the inner wall at the upper edge of the dust receiving bucket, the outer edge of the conical wall of the dust receiving bucket is connected with a vorticose whirlwind guide vane, and the side wall of the dust remover body is provided with a water level signal pipe which is communicated to the exterior of the side wall. The utility model has the advantages of easy manufacture, and convenient operation. The utility model can use dry and wet mixing coal, or dry coal, or wet coal according to the coal quality, and the smoke discharge and the black smoke density can achieve the standard.

Description

Vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors

The utility model relates to the coal-burning boiler dust arrester, and concrete is a kind of vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors.

There is a large amount of vertical fire coal boiler applications in China in all trades and professions, and at present, because country is strict day by day to environmental requirement, the soot emissions of thoroughly administering vertical gravity-flow ventilation coal-burning boiler still are technical barriers.

Vertical boiler dry type or wet scrubber that the boiler user is thrown in development in recent years in use expose a lot of insoluble technical deficiencies.As: because contained humidity causes in the flue-gas temperature of gravity-flow ventilation, wet scrubber, water spray, flue gas cooling and change in resistance coefficient fluctuating range are too big, directly influence the burning of boiler.Reduced the thermal efficiency of boiler.The gravity-flow ventilation dry collector can only be removed part bulky grain dust, removes and does not go black smoke concentration, and low, the clear dirt of efficiency of dust collection, emissions operation complexity are stopped up easily, lose dedusting function.

The purpose of this utility model is to overcome above-mentioned deficiency, carries on a shoulder pole for a kind of vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors, and manufacturing is simple, and is easy to operate, and the dried wet mixing of visual coal quality is used or done and use or wet usefulness, and smoke discharge amount and black smoke concentration are up to standard.

The purpose of this utility model is achieved in that

A kind of vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors, mainly by housing, whirlwind guider, dust receiving bucket and spray equipment are formed, and it is characterized in that:

Housing is made up of top deduster body and bottom dust-collecting bucket, and the ash-laden gas import is arranged at deduster body bottom, and the cleaning flue gases outlet is arranged at top; Dust-collecting bucket is the taper infundibulate, and its top is communicated with the deduster body, and its underpart is provided with the ash discharge water pipe;

Dust receiving bucket is the taper infundibulate, its bottom has tilted tube to be communicated with dust-collecting bucket, and the main body of spray equipment is a circular spray tube, is arranged at the upper edge inwall of dust receiving bucket, this shower connects the feed pipe of introducing outside housing, be covered with on this circular spray tube towards the spray apertures at dust receiving bucket center;

Be connected with some whirlwind guide vanes of circumference in equal parts in the awl wall outer of dust receiving bucket, each blade is vortex shape in the same way, the gabarit of each blade arrange rounded and should the circle gabarit and the deduster inner body wall between suitable gap is arranged; The inboard of described each blade is communicated with the ash-laden gas import of deduster body bottom;

Lower sides at the deduster body is provided with the water level signal pipe that is communicated with outside the wall.

The purpose of this utility model can also realize by following measure;

Described ash-laden gas import, described dust receiving bucket, the center line of described whirlwind guide vane, the outlet of described cleaning flue gases all is positioned at the central authorities of deduster body;

Described dust-collecting bucket has two symmetrical groups, is positioned at both sides, deduster body lower edge, is provided with the outer wall that annular channel is surrounded on the ash-laden gas import therebetween, and described water level signal pipe is communicated in this annular channel.

The end of described ash-laden gas import and cleaning flue gases outlet respectively is useful on the flange connecting limit.

Described deduster height overall h=0.5-3 rice;

Described deduster body height h ₁=0.3-2.5 rice;

Described dust-collecting bucket height h ₂=0.2-1.5 rice;

Described this body diameter of deduster b=0.3-1.5 rice;

Described exhanst gas outlet external diameter b ₁=0.5-1 rice;

Gas approach external diameter b ₂=0.15-1 rice.

The utility model has following actively useful effect:

This deduster has overcome the deficiency that existing deduster exists basically.Make the dried wet mixing of simple, easy to operate, visual coal quality and use or do the usefulness of using or wet.This deduster sample is through on probation, test, and the dust removal performance ideal has reached the dust removing effects of mechanical air inducing deduster basically.Smoke discharge amount and black smoke concentration all meet or exceed tourist district's environment protection emission index of national regulation.

This product can be used on the environmental transformation of existing vertical boiler or the supporting erection unit of new vertical boiler, to improve the environmental-protecting performance of boiler.

Now be described further in conjunction with the accompanying drawings:

Fig. 1 is the profile schematic diagram of the utility model one embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 2.

Accompanying drawing number:

1. deduster body 2. ash-laden gas imports 3. cleaning flue gases outlet

4. dust receiving bucket 401. pipelines 402. passages

5. ash discharge (water) pipe 6. dust-collecting buckets

7. water level signal pipe 8. feed pipes

9. pipe 901. spray apertures are washed one's hair in the annular spray

10. whirlwind guide vane

H. deduster housing height overall

H1. deduster body height

H2. dust-collecting bucket height

B. this body diameter of deduster

B1. exhanst gas outlet external diameter

B2. gas approach external diameter

Please refer to Fig. 1, Fig. 2, vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors of the present utility model, mainly by housing, whirlwind guider, dust receiving bucket and spray equipment are formed;

Housing is made up of top deduster body 1 and bottom dust-collecting bucket 6, and ash-laden gas import 2 is arranged at the bottom of deduster body 1, and cleaning flue gases outlet 3 is arranged at top;

Dust-collecting bucket 6 is the taper infundibulate, and its top is communicated with deduster body 1, and its underpart is provided with ash discharge water pipe 5;

Dust receiving bucket 4 is the taper infundibulate, and its bottom has tilted tube 401 to be communicated with dust-collecting bucket 6;

The main body of spray equipment is a circular spray tube 9, is arranged at the upper edge inwall of dust receiving bucket 4, and this shower 9 connects the feed pipe of introducing 8 outside housing, be covered with the spray apertures 901 towards the dust receiving bucket center on this circular spray tube 8;

Please be simultaneously with reference to Fig. 3, be connected with circumference in equal parts in the awl wall outer of dust receiving bucket 4 and be covered with some whirlwind guide vanes 10 of circumference, each blade is vortex shape in the same way, the gabarit of each blade arrange rounded and should the circle gabarit and the inwall of deduster body 1 between suitable gap is arranged; The inboard of described each blade 10 is communicated with the ash-laden gas import 2 of deduster body 1 bottom;

Lower sides at deduster body 1 is provided with the water level signal pipe 7 that is communicated with outside the wall.

In embodiment illustrated in fig. 2, the center line of described ash-laden gas import 2, described dust receiving bucket 4, described whirlwind guide vane 10, described cleaning flue gases outlet 3 all is positioned at the central authorities of deduster body 1;

Described dust-collecting bucket 4 has two symmetrical groups, is positioned at the both sides, lower edge of deduster body 1, is provided with the outer wall that annular channel 402 is surrounded on ash-laden gas import 2 therebetween, and described water level signal pipe 7 is communicated in the height middle part of this annular channel 402.

In the embodiment shown in fig. 1, the end of described ash-laden gas import 2 and cleaning flue gases outlet 3 respectively is useful on the flange connecting limit.

During enforcement, described deduster height overall h=0.5-3 rice;

The height h of described deduster body 1 ₁=0.3-2.5 rice;

The height h of described dust-collecting bucket 4 ₂=0.2-1.5 rice;

The external diameter b=0.3-1.5 rice of described deduster body 1;

The external diameter b of described exhanst gas outlet 3 ₁=0.5-1 rice;

The external diameter b of described gas approach 2 ₂=0.15-1 rice.

Operation principle of the present utility model:

This deduster principle is that the generation whirlwind forms centrifugal dust-removing after entering guide vane by the flue gas that lower vertical rises.Rotate flue gas on dust receiving bucket top and form collision with the steam that produces because of waste heat, mixing, separation, gathering stage, it is distinguished and admirable to form the flow field, center again by whirlwind before flue gas enters and exports; The soot dust granule of being assembled by humidification falls in the dust receiving bucket, is discharged by outlet through the flue gas of double purification.

The specifications design of deduster can calculate flue gas resistance and each spot size according to the specifications and models of boiler, determines gas approach, outlet diameter and chimney height etc.

Claims

1. vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors, mainly by housing, whirlwind guider, dust receiving bucket and spray equipment are formed, and it is characterized in that:

2. vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors as claimed in claim 1, it is characterized in that: described ash-laden gas import, described dust receiving bucket, the center line of described whirlwind guide vane, the outlet of described cleaning flue gases all is positioned at the central authorities of deduster body;

3. vertical gravity-flow ventilation coal-burning boiler Wet-dry cyclone dust collectors as claimed in claim 1 is characterized in that: the end of described ash-laden gas import and cleaning flue gases outlet respectively is useful on the flange connecting limit.