CN104848206A - Coal-fired boiler with function of suppressing nitrogen oxide emission - Google Patents
Coal-fired boiler with function of suppressing nitrogen oxide emission Download PDFInfo
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- CN104848206A CN104848206A CN201510282429.9A CN201510282429A CN104848206A CN 104848206 A CN104848206 A CN 104848206A CN 201510282429 A CN201510282429 A CN 201510282429A CN 104848206 A CN104848206 A CN 104848206A
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Abstract
The invention discloses a coal-fired boiler with a function of suppressing nitrogen oxide emission. The coal-fired boiler comprises a body; the bottom of the body is provided with a natural wind grate; a smoke tube and a dust removal tube are provided in the upper portion of the inside of the body; vertical water-cooled walls are symmetrically disposed within the body; a secondary combustion area is provided above the natural wind grate; the smoke tube is connected with a smoke dedusting and purifying unit through a smoke and dust incoming pipe; the smoke dedusting and purifying unit comprises another smoke and dust incoming pipe, an exhaust pipe, a main purifying column and a suction pump; the bottom of the main purifying column is provided with a purifying pool. The coal-fired boiler has the advantages that combustion speed is quickened, heat efficiency is greatly improved, combustion time is saved, the smoke tube is connected to the smoke dedusting and purifying unit, advanced impurity filtering allows life of purifying liquid to be effectively prolonged and pollution-free post-treatment of the purifying liquid, which reaches the end of life, to be easier, overall operation is simple, running is stable, the nitrogen oxides are suppressed, the natural wind combustion area allows continual combustion, and high utilization of high energy and low application of low energy are achieved.
Description
Technical field
The present invention relates to a kind of boiler, specifically a kind of coal-burning boiler suppressing discharged nitrous oxides.
Background technology
Boiler smoke nitrogen oxide main source mainly contains two parts: the burning of the nitrogen-containing compound 1, in coal produces; 2, the ignition temperature of boiler is too high, causes the N in air
2be oxidized to NO
x.Solution is targetedly, can according to actual production data for Part I, the coal combustion using generation nitrogen oxide as far as possible more; Because Part II is the main source that nitrogen oxides in effluent produces, the amount that nitrogen and oxygen at high temperature react depends primarily on ignition temperature, nitrogen gas concn and oxygen concentration.Temperature is higher, concentration is larger, the nitrogen oxide produced is more, most of boiler is by reducing combustion zone flame temperature, reduce high-temperature region air capacity supply simultaneously, make high-temperature region combustion reaction be in anaerobic condition, produce imperfect combustion, flue gas is to low-temperature space secondary air distribution combustion again, make other substance combustions complete, reach the object reducing discharged nitrous oxides.A patent was declared before applicant, it is the smokeless coal burning boiler about middle coal, both sides burning suppression discharged nitrous oxides, effectively inhibit the discharge of nitrogen oxide, carry out smokeless combustion, the thermal efficiency is high, but combustion zone adopts natural wind combustion system, speed on fire is slow, burning time is long, if directly add fan burning, can smolder, contaminated environment.
Summary of the invention
The object of the present invention is to provide a kind of coal-burning boiler suppressing discharged nitrous oxides, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of coal-burning boiler suppressing discharged nitrous oxides, comprise body of heater, the bottom of body of heater is provided with natural wind fire grate, in body of heater, top is provided with chimney and dedusting cylinder, furnace interior is symmetrical arranged vertical water-cooling wall, it is intermediate zone above natural wind fire grate, in body of heater, and be positioned at above intermediate zone and be provided with First air fire grate, furnace body outer wall is provided with and stretches in body of heater, and the mechanical air channel be positioned at above First air fire grate, it is First air combustion zone above First air fire grate, chimney is connected with flue-gas dust removal and purification device by flue dust air inlet pipe, flue-gas dust removal and purification device comprises flue dust air inlet pipe, discharge duct, main purifying column and aspiration pump, flue dust air inlet pipe is connected on dirt pocket, dirt pocket is provided with air inlet, the top of main purifying column is provided with clean room, inside, clean room is provided with water curtain generator, clean room is connected with cooler and adsorption chamber by discharge duct, the bottom of main purifying column is provided with clarifier-tank.
As the further scheme of the present invention: be provided with timing drainage valve bottom described cooler.
As the present invention's further scheme: described adsorption chamber inside is provided with active carbon.
As the present invention's further scheme: described dirt pocket inside is provided with heat exchanger.
Compared with prior art, the invention has the beneficial effects as follows: the present invention is on the basis that original natural wind burns, add mechanical blowing, accelerate burning velocity, substantially increase the thermal efficiency, save burning time, low-grade coal also can burn, and chimney is connected with flue-gas dust removal and purification device, by shifting to an earlier date impurity screening, the service life effectively raising scavenging solution also reduces the pollution-free post-processing operation difficulty of scavenging solution arriving service life simultaneously, for the cooling that the gas entering discharge duct shifts to an earlier date, reduce because gas high temperature is for the damage of pipeline, mist after purification is rinsed, cooling condensation and the mode of adsorbing effectively decrease the nuisance composition that Exhaust Gas contains, reach a class area environmental requirement four indices, and integrated operation is simple, operate steadily, do not smolder when burning on peak, suppress nitrogen oxide, reduce the discharge of sulfur dioxide, natural wind combustion zone burns away, reach high energy height to use, the object that low energy is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the coal-burning boiler suppressing discharged nitrous oxides;
In figure: 1-body of heater, 2-natural wind fire grate, 3-chimney, 4-dedusting cylinder, the vertical water-cooling wall of 5-, 6-intermediate zone, 7-First air fire grate, 8-machinery air channel, 9-primary combustion zone, 10-dirt pocket, 11-flue dust air inlet pipe, 12-aspiration pump, 13-adsorption chamber, 14-cooler, 15-discharge duct, the main purifying column of 16-, 17-clean room, 18-water curtain generator, 19-air inlet, 20-clarifier-tank.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 1, a kind of coal-burning boiler suppressing discharged nitrous oxides, comprise body of heater 1, be positioned at the natural wind fire grate 2 bottom body of heater 1, be positioned at chimney 3 and the dedusting cylinder 4 of body of heater 1 top, body of heater 1 internal symmetry arranges vertical water-cooling wall 5, it is intermediate zone 6 above natural wind fire grate 2, in body of heater 1, and be positioned at above intermediate zone 6 and be provided with First air fire grate 7, body of heater 1 outer wall is provided with and stretches in body of heater 1, and the mechanical air channel 8 be positioned at above First air fire grate 7, it is First air combustion zone 9 above First air fire grate 7, chimney 3 is connected with flue-gas dust removal and purification device by flue dust air inlet pipe 11, described flue-gas dust removal and purification device comprises flue dust air inlet pipe 11, discharge duct 15, main purifying column 16 and aspiration pump 12, described flue dust air inlet pipe 11 is connected on dirt pocket 10, dirt pocket 10 is provided with air inlet 19, the top of main purifying column 16 is provided with clean room 17, inside, clean room 17 is provided with water curtain generator 18, clean room 17 is connected with cooler 14 and adsorption chamber 13 by discharge duct 15, the bottom of main purifying column 16 is provided with clarifier-tank 20.The water curtain that water curtain generator 18 produces plays flushing action well for the mist passed through.Described cooler 14 makes the moisture in mist and scavenging solution condensation flow out, and described adsorption chamber 13 adsorbs the pernicious gas that the mist after cooling contains.The service life effectively raising scavenging solution by shifting to an earlier date impurity screening also reduces the pollution-free post-processing operation difficulty of scavenging solution arriving service life simultaneously, for the cooling that the gas entering discharge duct 15 shifts to an earlier date, reduce because gas high temperature is for the damage of pipeline, flushing has been carried out for the mist after purification, the mode of cooling condensation and absorption effectively decreases the nuisance composition that Exhaust Gas contains.
Be provided with timing drainage valve bottom described cooler 14, realize automatic draining, alleviate labour intensity.
Described adsorption chamber 13 inside is provided with active carbon, has good suction-operated.
Described dirt pocket 10 inside is provided with heat exchanger, reduces the temperature entering flue gas.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (4)
1. one kind is suppressed the coal-burning boiler of discharged nitrous oxides, comprise body of heater, it is characterized in that, the bottom of body of heater is provided with natural wind fire grate, in body of heater, top is provided with chimney and dedusting cylinder, furnace interior is symmetrical arranged vertical water-cooling wall, it is intermediate zone above natural wind fire grate, in body of heater, and be positioned at above intermediate zone and be provided with First air fire grate, furnace body outer wall is provided with and stretches in body of heater, and the mechanical air channel be positioned at above First air fire grate, it is First air combustion zone above First air fire grate, chimney is connected with flue-gas dust removal and purification device by flue dust air inlet pipe, flue-gas dust removal and purification device comprises flue dust air inlet pipe, discharge duct, main purifying column and aspiration pump, flue dust air inlet pipe is connected on dirt pocket, dirt pocket is provided with air inlet, the top of main purifying column is provided with clean room, inside, clean room is provided with water curtain generator, clean room is connected with cooler and adsorption chamber by discharge duct, the bottom of main purifying column is provided with clarifier-tank.
2. the coal-burning boiler of suppression discharged nitrous oxides according to claim 1, is characterized in that, is provided with timing drainage valve bottom described cooler.
3. the coal-burning boiler of suppression discharged nitrous oxides according to claim 1 and 2, is characterized in that, described adsorption chamber inside is provided with active carbon.
4. the coal-burning boiler of suppression discharged nitrous oxides according to claim 3, is characterized in that, described dirt pocket inside is provided with heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282429.9A CN104848206A (en) | 2015-05-28 | 2015-05-28 | Coal-fired boiler with function of suppressing nitrogen oxide emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282429.9A CN104848206A (en) | 2015-05-28 | 2015-05-28 | Coal-fired boiler with function of suppressing nitrogen oxide emission |
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|---|---|
| CN104848206A true CN104848206A (en) | 2015-08-19 |
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| CN201510282429.9A Pending CN104848206A (en) | 2015-05-28 | 2015-05-28 | Coal-fired boiler with function of suppressing nitrogen oxide emission |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214601Y (en) * | 1994-09-20 | 1995-12-06 | 榆林地区机械厂 | Vertical double-layer fire grate back-burning type heat pipe boiler |
| EP0735322A2 (en) * | 1995-03-30 | 1996-10-02 | DAS-DÜNNSCHICHT ANLAGEN SYSTEME GmbH DRESDEN | Process and device for purification of noxious exhaust gases by chemical conversion in a flame and hot surfaces |
| CN202938356U (en) * | 2012-09-28 | 2013-05-15 | 李效清 | Smoke-free coal-fired boiler for inhibiting emission of nitrogen oxides |
| CN203935743U (en) * | 2014-05-23 | 2014-11-12 | 广东梅雁吉祥水电股份有限公司 | A kind of flue-gas dust removal and purification equipment |
| CN204693390U (en) * | 2015-05-28 | 2015-10-07 | 苏州斯洛莱自动化设备有限公司 | A kind of coal-burning boiler suppressing discharged nitrous oxides |
-
2015
- 2015-05-28 CN CN201510282429.9A patent/CN104848206A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214601Y (en) * | 1994-09-20 | 1995-12-06 | 榆林地区机械厂 | Vertical double-layer fire grate back-burning type heat pipe boiler |
| EP0735322A2 (en) * | 1995-03-30 | 1996-10-02 | DAS-DÜNNSCHICHT ANLAGEN SYSTEME GmbH DRESDEN | Process and device for purification of noxious exhaust gases by chemical conversion in a flame and hot surfaces |
| EP0735322A3 (en) * | 1995-03-30 | 1997-04-23 | Das Duennschicht Anlagen Sys | Process and device for purification of noxious exhaust gases by chemical conversion in a flame and hot surfaces |
| CN202938356U (en) * | 2012-09-28 | 2013-05-15 | 李效清 | Smoke-free coal-fired boiler for inhibiting emission of nitrogen oxides |
| CN203935743U (en) * | 2014-05-23 | 2014-11-12 | 广东梅雁吉祥水电股份有限公司 | A kind of flue-gas dust removal and purification equipment |
| CN204693390U (en) * | 2015-05-28 | 2015-10-07 | 苏州斯洛莱自动化设备有限公司 | A kind of coal-burning boiler suppressing discharged nitrous oxides |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |
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| WD01 | Invention patent application deemed withdrawn after publication |