CN202993237U - Highly-effective and energy-saving combustion system of denitration dedusting boiler - Google Patents
Highly-effective and energy-saving combustion system of denitration dedusting boiler Download PDFInfo
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- CN202993237U CN202993237U CN 201220073800 CN201220073800U CN202993237U CN 202993237 U CN202993237 U CN 202993237U CN 201220073800 CN201220073800 CN 201220073800 CN 201220073800 U CN201220073800 U CN 201220073800U CN 202993237 U CN202993237 U CN 202993237U
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- waste gas
- boiler
- exhaust pipe
- pipe
- gas hot
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Abstract
A highly-effective and energy-saving combustion system of a denitration dedusting boiler comprises a boiler, a waste gas exhaust pipe, a centrifugal exhaust blower, a waste gas hot air backflow blower, a waste gas hot air backflow pipe, a pure oxygen adding pipe, a cyclone dust collector and a static processor, wherein the waste gas in the boiler is pumped out and sent to the cyclone dust collector for removing large particle dust by the centrifugal exhaust blower. Small amount of flue dust is removed by the static processor. High temperature waste gas is drawn out from the front section of the waste gas exhaust pipe by the waste gas hot air backflow blower of the boiler, and returned back to the boiler through the waste gas hot air backflow pipe to increase the combustion temperature in a combustion chamber of the boiler. At the same time, proper amount of pure oxygen is added to the combustion chamber of the boiler through the pure oxygen adding pipe, to enable fully combustion of fuel and flue dust flown back, increase the temperature of the boiler, minimize the generation of flue dust, and eliminate nitrogen oxide. In this way, denitration can be carried out from the source, so that less flue dust is emitted, and pressure of subsequent processing is reduced.
Description
[technical field]
The utility model relate to boiler combustion system energy-conservation with dust treatment discharging, particularly a kind of energy-efficient denitration dust collecting boiler combustion system.
[background technology]
Current boiler combustion system is widely used in the fields such as factory, enterprise, hotel, hospital, restaurant, restaurant, dining room, food factory, and it mainly plays the combustion fuel heating water, makes water become the effect of hot water or steam.Present boiler combustion system is the hot waste gas body that contains flue dust imperfect combustion in boiler not to be done anyly recycle and process and directly discharging mostly, thereby discharging a large amount of heats makes it to be fully utilized and the flue dust discharge beyond standards, do not reach energy-conservation and effect environmental protection, wasted limited energy resources and seriously affected the environment of atmosphere.
[utility model content]
For heat in the efficiency of combustion that further improves boiler, waste gas take full advantage of and to the treatment effect of boiler waste gas cigarette ash dirt, the utility model provides a kind of energy-efficient denitration dust collecting boiler combustion system.
The technology point of the energy-efficient denitration dust collecting boiler combustion system of the utility model is as follows:
A kind of energy-efficient denitration dust collecting boiler combustion system provided by the utility model comprises that boiler, waste gas exhaust pipe, centrifugal air exhauster, waste gas hot air reflux blower fan, cyclone dust collector, electrostatic treater, waste gas hot blast return duct, pure oxygen add the compositions such as pipe.
Described waste gas exhaust pipe is located at described boiler and is fixedly connected with; Described centrifugal air exhauster is fixedly connected with and communicates with described waste gas exhaust pipe, and is located at the rear of described waste gas hot blast return duct; Described waste gas hot blast return duct is fixedly connected with and communicates with described waste gas exhaust pipe; The centre that described waste gas hot air reflux blower fan is located at described waste gas hot blast return duct is fixedly connected with and communicates, and the other end is fixedly connected with and communicates with described boiler bottom by described waste gas hot blast return duct; Described cyclone dust collector is fixedly installed on described waste gas exhaust pipe and communicates, and is located at the rear end of described centrifugal air exhauster; Described electrostatic treater is located on described waste gas exhaust pipe and is communicated, and is located at the rear end of described cyclone dust collector; Described waste gas exhaust pipe is discharged waste gas by after described electrostatic treater.Described pure oxygen adds pipe and is fixedly connected with bottom boiler furnace with described waste gas hot blast return duct end by a cyclone, provides oxygen to give described boiler furnace.
Further, described waste gas hot air reflux blower fan extracts hotter boiler waste gas by waste gas hot blast return duct and again is back in boiler furnace from waste gas exhaust pipe, heat in waste gas fully is utilized, improves the temperature of boiler combustion chamber interior and the flue dust in boiler waste gas is burnt more completely.
Further, described pure oxygen adds pipe and is connected with described waste gas hot blast return duct end by a cyclone, add appropriate pure oxygen by described waste gas hot blast return duct toward boiler internal in good time, make the burning of boiler internal fuel and flue dust more abundant, improve the temperature of boiler internal and the temperature of steam, and stopped airborne N
2Enter.
Further, boiler waste gas extracts by described exhausting waste gas blower fan and delivers to described cyclone dust collector and described electrostatic treater, gas is discharged through discharge duct from the opposite side of described electrostatic treater after the high-pressure electrostatic electric field adsorption treatment of described cyclone dust collector and described electrostatic treater.
Further, perhaps be determined on a case-by-case basis, as long as described cyclone dust collectors and described electrostatic treater are both one.
The beneficial effects of the utility model are: extract hot waste gas by waste gas hot blast return duct from waste gas exhaust pipe and be back to boiler, heat in waste gas is taken full advantage of, flue dust is fully burned, eliminated the generation of nitrogen oxide, reach the effect of denitration from the source, and remove larger dust granule by cyclone dust collector, remove a small amount of flue dust with electrostatic treater.
[description of drawings]
Fig. 1 is the energy-efficient denitration dust collecting boiler combustion system of the utility model operation principle schematic diagram;
[specific embodiment]
Below in conjunction with embodiment, the energy-efficient denitration dust collecting boiler combustion system of the utility model is done detailed explanation.
As shown in Figure 1, the utility model discloses a kind of energy-efficient denitration dust collecting boiler combustion system.
As shown in Figure 1, the energy-efficient denitration dust collecting boiler combustion system of the utility model comprises that boiler 1, boiler waste gas blast pipe 2, centrifugal air exhauster 3, waste gas hot air reflux blower fan 4, cyclone dust collector 5, electrostatic treater 6, waste gas hot blast return duct 7, pure oxygen add pipe 8, cyclone 9.
Wherein, clearer in order to express, the flow direction of air-flow is represented with arrow, the direction indication of arrow is the flow direction of air-flow.
Fuel produces waste gas in boiler 1 internal combustion, centrifugal air exhauster 3 is by waste gas and the flue dust of waste gas exhaust pipe 2 pump drainage boiler 1 interior generations, waste gas hot air reflux blower fan 4 extracts the hot waste gas that contains flue dust and is back to boiler furnace from boiler bottom from waste gas exhaust pipe 2 by waste gas hot blast return duct 7, other pure oxygen interpolation pipe 8 is connected with waste gas hot blast return duct 7 ends by a swirl-flow devices 9 and in time adds appropriate pure oxygen for boiler 1, add pure oxygen and reach the demand of burning oxygen supply, and stopped airborne N
2Enter.
By said apparatus, can realize following effect:
1). improve the temperature of boiler internal burning and the temperature of air feed;
2). make the boiler internal burning more abundant, the waste gas of discharge is mainly CO
2
3) .N
2Concentration with the iterative method of burning, can realize without nitrogen burning, the generation of having stopped nitrogen oxide from the source, the utilization that has also improved greatly oxygen reaches the purpose of denitration;
4). the gas of final discharging is the CO that fuel combustion process produces
2And sulfide and a small amount of flue dust.
Further, the clean-burning waste gas of process in this device is removed larger dust granule by exhausting waste gas blower fan 3 through cyclone dust collector 5 and is removed a small amount of flue dust by electrostatic precipitator 6 again, discharge from the boiler waste gas chimney, thereby make the boiler waste gas qualified discharge.
By the utility model, can realize considerable environmental economical profit, fuel savings.By the checking to universal miniature boiler, the saving ratio of fuel is not less than 50%, but the expense of the pure oxygen that increases is well below fuel-saving cost.Can realize following effect:
1). follow-up dust treatment pressure is little, the discharging of particle extremely low concentration;
2). the nitrogenfree oxide discharging;
3). fuel savings, improved efficiency of utilization, reduce CO
2Discharge capacity;
4). be mainly CO2 and SO2 in the gas of final discharging, this lays a solid foundation for the resource again of these two kinds of materials.
The electrostatic precipitator of using in this system is to utilize the inventor's existing patented technology, and the concrete patent No. is as follows: 1, high pressure electrostatic separator, ZL200720196113.9, inventor: Cheng Xueqin.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (1)
1. an energy-efficient denitration dust collecting boiler combustion system, comprise that boiler, waste gas exhaust pipe, centrifugal air exhauster, waste gas hot air reflux blower fan, waste gas hot blast return duct, pure oxygen add pipe, cyclone dust collector and electrostatic treater; Described waste gas exhaust pipe is located at described boiler and is fixedly connected with; Described centrifugal air exhauster is fixedly connected with and communicates with described waste gas exhaust pipe, and is located at the rear of described waste gas hot blast return duct; Described waste gas hot blast return duct is fixedly connected with and communicates with described waste gas exhaust pipe; The centre that described waste gas hot air reflux blower fan is located at described waste gas hot blast return duct is fixedly connected with and communicates, and the other end is fixedly connected with and communicates with described boiler bottom by described waste gas hot blast return duct; Described cyclone dust collector is fixedly installed on described waste gas exhaust pipe and communicates, and is located at the rear end of described centrifugal air exhauster; Described electrostatic treater is located on described waste gas exhaust pipe and is communicated, and is located at the rear end of described cyclone dust collector; Described waste gas exhaust pipe is discharged waste gas by after described electrostatic treater; Described pure oxygen adds pipe and is fixedly connected with bottom boiler furnace with described waste gas hot blast return duct end by a cyclone, provides oxygen to give described boiler furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220073800 CN202993237U (en) | 2012-03-01 | 2012-03-01 | Highly-effective and energy-saving combustion system of denitration dedusting boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220073800 CN202993237U (en) | 2012-03-01 | 2012-03-01 | Highly-effective and energy-saving combustion system of denitration dedusting boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202993237U true CN202993237U (en) | 2013-06-12 |
Family
ID=48564414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220073800 Expired - Lifetime CN202993237U (en) | 2012-03-01 | 2012-03-01 | Highly-effective and energy-saving combustion system of denitration dedusting boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202993237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276606A (en) * | 2015-11-30 | 2016-01-27 | 深圳市山水乐环保科技有限公司 | Air distribution device and method of pure oxygen combustion system |
| CN106871440A (en) * | 2017-03-03 | 2017-06-20 | 黄永乐 | A kind of environment-friendlynegative negative pressure boiler |
-
2012
- 2012-03-01 CN CN 201220073800 patent/CN202993237U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276606A (en) * | 2015-11-30 | 2016-01-27 | 深圳市山水乐环保科技有限公司 | Air distribution device and method of pure oxygen combustion system |
| CN106871440A (en) * | 2017-03-03 | 2017-06-20 | 黄永乐 | A kind of environment-friendlynegative negative pressure boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |