CN201026438Y

CN201026438Y - Water curtain type highly effective desulfurising-dusting apparatus of internal barrel of coal-fired boiler smokestack

Info

Publication number: CN201026438Y
Application number: CNU2007200034573U
Authority: CN
Inventors: 李湘益
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-07
Filing date: 2007-02-07
Publication date: 2008-02-27
Anticipated expiration: 2017-02-07

Abstract

The utility model relates to a water-curtain high-efficient desulfurization and dust removing device used in an internal cylinder of a chimney of a coal-fired boiler and comprises a water intake pipe, a water return pipe and nozzles, wherein, an internal cylinder which is arranged in a chimney of a boiler is provided and the cylindrical wall of the internal cylinder clings to the internal wall of the chimney; the nozzles are arranged in the internal wall of the internal cylinder and connected with the water intake pipe; a spray port of the nozzles is an approximate circle and the water sprayed out inclines downward from 5 degrees to 15 degrees and covers the water-curtain plane of the periphery of more than 300 degrees; the nozzles in the four sides of the internal cylinder are arranged on the upper and the lower with intervals and each side is provided with one nozzle to four nozzles; the internal cylinder is provided with a smoke inlet which coincides with a smoke inlet of the boiler; the water return pipe is communicated with a sedimentation pool of a return water treatment pool communicated with the water inlet pipe. The utility model is suitable for the dust removing for the chimney of a cola-fired boiler and has the advantages of novel structure, low running cost, flexible use, strong adaptability and good dust removing effect.

Description

Coal-burning boiler chimney internal cylinder water curtain style high-efficient desulfation dust-extraction device

Technical field

The utility model belongs to a kind of boiler desulfurization dust arrester, and concrete is the device that is used for the interior desulfurization and dedusting of chimney of coal-burning boiler, particularly utilizes to contain the device that alkaline water carries out desulfurization and dedusting.

Background technology

At present, the use of coal-burning boiler is still very extensive, and the pollution that the soot emissions of coal-burning boiler cause is an important problem.Along with The development in society and economy, more and more higher to environmental protection requirement.For a long time, people are the high smoke contamination problem that solves coal-burning boiler, have proposed a lot of desulfurization and dedusting technologies and product.These technology and product are all in the effect that has improved desulfurization and dedusting in varying degrees.But some technical costs is too high, and the desulfurization and dedusting effect that has is not good enough.Therefore, the dedusting technology of better effects if need be proposed still, to satisfy the requirement of the environmental protection standard that improves constantly.

The utility model content

The purpose of this utility model is at the problems referred to above, propose a kind of coal-burning boiler chimney internal cylinder water curtain style high-efficient desulfation dust-extraction device, this device adopts the mode of multilayer water curtain sprinkling to carry out dedusting, has improved the effect of dedusting greatly, and novelty simple in structure, operating cost is low.

The purpose of this utility model is achieved through the following technical solutions: a kind of coal-burning boiler chimney internal cylinder water curtain style high-efficient desulfation dust-extraction device, be provided with water inlet pipe, return pipe, shower nozzle, it is characterized in that: be provided with an inner core, this inner core is located in the boiler chimney, the barrel of this inner core is close to inner wall of stack, described shower nozzle is located at the inwall of inner core, shower nozzle is connected with described water inlet pipe, the spout of shower nozzle is an approximate circle, the water of ejection becomes downward-sloping 5-15 degree, the above water curtain plane of 300 degree around covering, and this shower nozzle is in four sides of inner core, in opposite directions between the upper and lower every setting, every side is provided with 1-4; This inner core is provided with into mouth, and this advances mouth and advances mouth with boiler and overlap; Described return pipe is communicated with the sedimentation basin of a backwater treatment pond, and this backwater treatment pond is communicated with described water inlet pipe.

The utility model further improves and the additional project of enforcement is:

Described backwater treatment pond comprises a sedimentation basin, filtering ponds A, filtering ponds B, stirring pool and tank, and this tank is communicated with described water inlet pipe, is provided with a mixing drum on the stirring pool side, and this mixing drum is communicated with filling pipe.

Above shower nozzle, be provided with an emission gases thief hole on the described inner tube wall.

The utility model is owing to be provided with chimney internal cylinder and drencher, and shower nozzle is in opposite directions between the upper and lower every setting in chimney four sides, shower nozzle is downward-sloping, in chimney, form the multilayer water curtain during operation, and in the water curtain water, add desulfurizing agent by mixing drum, the flue dust that boiler is discharged contains the spray of the water curtain of alkalescence through multilayer, various flue dust can be received, and the pernicious gases such as sulfide in the flue dust can be carried out acid-base neutralization and absorb, thereby make the fresh air of gas behind rain that discharges behind the desulfurization and dedusting; The quantity of described inner core size, shower nozzle and the size of injection flow rate can be provided with flexibly according to the needs of boiler; Set mixing drum can be dosed as required to assist in the desulfurization and dedusting water and use agent, can satisfy special dedusting needs; Backwater after the dedusting has received the waste heat in the flue dust, its utilization can also be played energy-conservation effect.The utlity model has novelty simple in structure, operating cost is low, use is flexible, adaptability is strong, the desulfurization and dedusting effect is fairly obvious, can reach the advantage of higher environmental requirement.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of backwater treatment pond of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described: embodiment: referring to accompanying drawing, a kind of coal-burning boiler chimney internal cylinder water curtain style high-efficient desulfation dust-extraction device, be provided with water inlet pipe 5, return pipe 7, shower nozzle 3, also be provided with an inner core 2, this inner core is located in the boiler chimney 1, the barrel of this inner core is close to inner wall of stack, described shower nozzle is located at the inwall of inner core, shower nozzle is connected with described water inlet pipe, and the spout of shower nozzle is an approximate circle, and the water of ejection becomes downward-sloping 8 degree, the water curtain plane 4 of 340 degree around covering, this shower nozzle is in four sides of inner core, and in opposite directions between the upper and lower every setting, every side is provided with 2; This inner core is provided with into mouth 6, and this advances mouth and advances mouth with boiler and overlap; Described return pipe is communicated with the sedimentation basin 8.1 of a backwater treatment pond 8, and this backwater treatment pond is communicated with described water inlet pipe.Described backwater treatment pond comprises a sedimentation basin, filtering ponds A8.2, filtering ponds B8.3, stirring pool 8.4 and tank 8.5, and this tank is communicated with described water inlet pipe, is provided with a mixing drum 9 on the stirring pool side, and this mixing drum is communicated with filling pipe 10.Above shower nozzle, be provided with an emission gases thief hole 11 on the described inner tube wall.Inner core in the present embodiment is made of the thick stainless steel of 2mm, and described shower nozzle also is to make of stainless steel material.

Claims

1. coal-burning boiler chimney internal cylinder water curtain style high-efficient desulfation dust-extraction device, be provided with water inlet pipe (5), return pipe (7), shower nozzle (3), it is characterized in that: be provided with an inner core (2), this inner core is located in the boiler chimney (1), the barrel of this inner core is close to inner wall of stack, described shower nozzle is located at the inwall of inner core, shower nozzle is connected with described water inlet pipe, the spout of shower nozzle is an approximate circle, the water of ejection becomes downward-sloping 5-15 degree, the above water curtain plane (4) of 300 degree around covering, and this shower nozzle is in four sides of inner core, in opposite directions between the upper and lower every setting, every side is provided with 1-4; This inner core is provided with into mouth (6), and this advances mouth and advances mouth with boiler and overlap; Described return pipe is communicated with the sedimentation basin (8.1) of a backwater treatment pond (8), and this backwater treatment pond is communicated with described water inlet pipe.

2. dust arrester according to claim 1, it is characterized in that: described backwater treatment pond comprises a sedimentation basin, filtering ponds A (8.2), filtering ponds B (8.3), stirring pool (8.4) and tank (8.5), this tank is communicated with described water inlet pipe, be provided with a mixing drum (9) on the stirring pool side, this mixing drum is communicated with filling pipe (10).

3. dust arrester according to claim 1 is characterized in that: be provided with an emission gases thief hole (11) on the described inner tube wall above shower nozzle.