CN105020730A - Environment-friendly energy saver of gas-fired boiler - Google Patents
Environment-friendly energy saver of gas-fired boiler Download PDFInfo
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- CN105020730A CN105020730A CN201510450718.5A CN201510450718A CN105020730A CN 105020730 A CN105020730 A CN 105020730A CN 201510450718 A CN201510450718 A CN 201510450718A CN 105020730 A CN105020730 A CN 105020730A
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- flue gas
- hollow cylindrical
- protection energy
- smoke
- saving device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The invention relates to an environment-friendly energy saver of a gas-fired boiler. The energy saver comprises an oxidation heat exchange device, a spray device and a solution storage device. The oxidation heat exchange device is of a hollow columnar structure and vertically arranged. Due to the fact that the oxidation heat exchange device is of the hollow columnar structure and vertically arranged, a smoke inlet pipeline and a smoke flow-out pipeline are both horizontally arranged in the tangential direction of the hollow columnar structure, and an air sprayer capable of enabling air flow to go forwards spirally is arranged in the smoke inlet pipeline, so that smoke driven by the spirally-going air spirally ascends in the oxidation heat exchange device; the smoke and vertically sprayed water beams cross, and therefore the oxidation process and the dissolution process are achieved at the same time; compared with the mode that the smoke and the water beams purely run in opposite directions, contact between the smoke and the water is more sufficient, nitrogen dioxide can be fully dissolved more easily, and the smoke can meet the emission standard.
Description
Technical field
The present invention relates to a kind of gas fired-boiler environmental-protection energy-saving device, belong to gas fired-boiler flue gas processing device field.
Background technology
Put into effect gas fired-boiler discharged nitrous oxides new standard according to Environmental Protection Agency of Beijing: on July 1st, 2015 discharge standard by 150 milligrams/cubic metre be adjusted to 80 milligrams/cubic metre, newly-built boiler room discharge standard is 30 milligrams/cubic metre 1 day April in 2017.General plain cylindrical furnace combustor all can not reach this standard, and more the transducing combustor that reaches standard is not only expensive but also face the problem that combustor mates with original boiler.Therefore, boiler industry is badly in need of a kind ofly will to change the product that combustor just can reach discharge standard.
Summary of the invention
The present invention is to provide a kind of gas fired-boiler environmental-protection energy-saving device to solve above-mentioned technical problem.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of gas fired-boiler environmental-protection energy-saving device, comprises heat of oxidation switch, spray equipment, solution storage device, and described heat of oxidation switch is hollow cylindrical structure and vertically arranges,
The bottom of described hollow cylindrical structure is provided with flue gas and enters pipeline, and the top of described hollow cylindrical structure is provided with flue gas outflow conduit, and described flue gas enters pipeline and the tangential direction of flue gas outflow conduit all along described hollow cylindrical structure is horizontally disposed; Described spray equipment is arranged on the top of described hollow cylindrical structure; Described solution storage device connects described spray equipment by spray piping;
Described flue gas enters in pipeline the air nozzle being provided with and flow spiral can be made to move ahead, and described air nozzle is communicated with blower fan by wind conveying pipe road.
The invention has the beneficial effects as follows: owing to heat of oxidation switch being hollow cylindrical structure and vertically arranging, flue gas enter pipeline and flue gas outflow conduit all horizontally disposed along the tangential direction of described hollow cylindrical structure and enter in pipeline at flue gas the air nozzle being provided with and flow spiral can be made to move ahead, under the air push that flue gas moves ahead at spiral, also to spin in the heat of oxidation switch ascending motion, be crossing operation with the vertical water bundle sprayed, the process realizing oxidation simultaneously and dissolve, compared with the two pure antikinesis, the contact of flue gas and water is more abundant, more easily dissolve nitrogen dioxide fully, realize flue gas and reach standard.
On the basis of technique scheme, the present invention can also do following improvement.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, described spray piping is provided with spray pump.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, is provided with waste heat utilization heat exchanger in described solution storage device device, and the delivery port of described waste heat utilization heat exchanger and water return outlet are positioned at outside described solution storage device device; The top of described solution storage device device is also communicated with overflow pipe.
Adopt above-mentioned further beneficial effect to be: after the water bundle sprayed fully contacts with flue gas, have exchanged a large amount of heat by being communicated with the circulation of heating pump after waste heat utilization heat exchanger heat exchange or circulating with softening water tank, can reach energy-conservation object
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, the bottom of described heat of oxidation switch is provided with solution return mouth, and described solution storage device is positioned at below described solution return mouth.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, described spray equipment comprises circular metal plate, described circular metal plate is densely covered with aperture and the upper end of the hollow cylindrical structure of installing; Described circular metal board diameter is identical with the diameter of described hollow cylindrical structure.Described densely covered hole diameter 2-5 millimeter, spacing 10 millimeters.
Adopt above-mentioned further beneficial effect to be: the ejection of water bundle is more even, realize fully contacting of water and flue gas, raising fume treatment efficiency.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, described air nozzle comprises front flow guiding plate, rear deflector and swirl vane, described rear deflector is the first tubular structure, described first tubular structure comprises stub end and little head end, and described little head end is connected with described wind conveying pipe road; Described swirl vane side is fixedly connected with the madial wall of described first tubular structure; Described front flow guiding plate is fixedly connected with described swirl vane opposite side; Form air-flow between described front flow guiding plate and rear deflector and spray passage.
The beneficial effect of above-mentioned further scheme is adopted to be: by the effect of front flow guiding plate, rear deflector and swirl vane, high velocity air is at an angle with the flow direction of flue gas by the ejection of the stub end of tubular structure, ensure that air stream helical form promotes flue gas stream and advances and fully mix, ensure abundant catalytic oxidation in heat of oxidation switch.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, described front flow guiding plate comprises deflector main body and top cover, and described deflector main body is the second tubular structure, described second tubular structure is identical with the first tubular structure, and described top cover is fixedly connected with described little head end.
The present invention's a kind of gas fired-boiler environmental-protection energy-saving device described above, further, described front flow guiding plate is spherical structure.
The method of a kind of gas fired-boiler environmental-protection energy-saving device of the present invention smoke treatment, step 1), blower fan enters the air nozzle of pipe end by being positioned at flue gas, eject spiral helicine air-flow, promote flue gas curl to run, the flow velocity of described air is greater than flue gas flow rate more than 10 times;
Step 2), the gaseous mixture of air and flue gas enters in the oxidation of hollow cylindrical, heat-exchange device with tangential direction, under effect of inertia, helical form rises, the gaseous mixture risen and the water Shu Chuicheng crossing operation of the intensive ejection of spray equipment to dissolve the nitrogen dioxide in flue gas, the heat in simultaneously stability flue gas.
Accompanying drawing explanation
Fig. 1 is the longitudinal profile schematic diagram of a kind of gas fired-boiler environmental-protection energy-saving device of the present invention;
Fig. 2 is the top view of a kind of gas fired-boiler environmental-protection energy-saving device of the present invention;
Fig. 3 is air nozzle longitudinal profile schematic diagram in a kind of gas fired-boiler environmental-protection energy-saving device of the present invention;
Fig. 4 is Fig. 3 A-A directional profile schematic diagram;
Fig. 5 is that in a kind of gas fired-boiler environmental-protection energy-saving device of the present invention, air nozzle enters in pipeline the schematic diagram spraying air-flow at flue gas.
In accompanying drawing, the list of parts representated by each label is as follows:
1, blower fan, 2, air nozzle, 2-1, wind conveying pipe road, 2-2, swirl vane, 2-3, front flow guiding plate, 2-4, rear deflector, 2-5, air stream, 3, flue gas enters pipeline, 4, heat of oxidation switch, 5, spray equipment, 6, flue gas outflow conduit, 7, spray piping, 8, spray pump, 9, solution return mouth, 10, solution storage device, 11, solution, 12, waste heat utilization heat exchanger, 13, overflow pipe, 14, the delivery port of waste heat utilization heat exchanger, 15, the water return outlet of waste heat utilization heat exchanger.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of gas fired-boiler environmental-protection energy-saving device of the present invention, comprise heat of oxidation switch 4, spray equipment 5, solution storage device 10, described heat of oxidation switch 4 is hollow cylindrical structure and vertically arranges, the bottom of heat of oxidation switch 4 is provided with solution return mouth 9, described solution storage device 10 is positioned at below described solution return mouth 9, can collect spray liquid in time.
The bottom of described hollow cylindrical structure is provided with flue gas and enters pipeline 3, and the bottom of described hollow cylindrical structure is provided with flue gas outflow conduit 6, and described flue gas enters pipeline 3 and the tangential direction of flue gas outflow conduit 6 all along described hollow cylindrical structure is horizontally disposed; Described spray equipment 5 is arranged on the top of described hollow cylindrical structure; Described solution storage device 10 connects described spray equipment 5 by spray piping 7; Described spray piping 7 is provided with spray pump.
Described flue gas enters in pipeline 3 air nozzle 2 being provided with and flow spiral can be made to move ahead, and described air nozzle 2 is communicated with blower fan 1 by wind conveying pipe road 2-1.
Particularly, described air nozzle comprises front flow guiding plate, rear deflector and swirl vane, and described rear deflector is the first tubular structure, and described first tubular structure comprises stub end and little head end, and described little head end is connected with described wind conveying pipe road; Described swirl vane side is fixedly connected with the madial wall of described first tubular structure; Described front flow guiding plate is fixedly connected with described swirl vane opposite side; Form air-flow between described front flow guiding plate and rear deflector and spray passage; Described front flow guiding plate comprises deflector main body and top cover, and described deflector main body is the second tubular structure, and described second tubular structure is identical with the first tubular structure, and described top cover is fixedly connected with described little head end.
A kind of gas fired-boiler environmental-protection energy-saving device of the present invention, in certain embodiments, be provided with waste heat utilization heat exchanger 12 in described solution storage device device 10, the delivery port 14 of described waste heat utilization heat exchanger and the water return outlet 15 of waste heat utilization heat exchanger are positioned at outside described solution storage device device 10; The top of described solution storage device device 10 is also communicated with overflow pipe 13.In heat of oxidation switch, the solution sprayed absorbs the heat of flue gas by being communicated with the circulation of heating pump after waste heat utilization heat exchanger heat exchange or circulating with softening water tank, reaches energy-conservation object.
A kind of gas fired-boiler environmental-protection energy-saving device of the present invention, in the example that some are concrete, described spray equipment 10 comprises circular metal plate, described circular metal plate is densely covered with aperture and the upper end of the hollow cylindrical structure of installing; Described circular metal board diameter is identical with the diameter of described hollow cylindrical structure.Described densely covered hole diameter 2-5 millimeter, spacing 10 millimeters, the ejection of water bundle that this structure can make is more even, realizes fully contacting of water and flue gas, raising fume treatment efficiency.
The process of smoke treatment of the present invention is:
Blower fan 1 is by air nozzle 2, and air spirally sprays higher than flue gas 10 times of flow velocitys, stirs the flowing of flue gas curl.The oxygen in air is allowed fully to mix with flue gas.When nitrogen oxides in effluent 150 milligrams/cubic metre, controlling 100 to 1 by oxygen and the ratio of nitrogen oxide, is the oxygen that conversion of nitric oxide gas becomes nitrogen dioxide deposit enough.Flue gas after mixing air enters along the tangent to periphery mode of heat of oxidation switch 4, the flue gas entering heat of oxidation switch 4 circles under effect of inertia, flue gas below does ascending motion under promoting, the running orbit of final flue gas is that helical form rises, and vertical with spray equipment 5, intensive downward water bundle is crossing operation.Spray pump 8 is driven into the aqueous solution in spray equipment 5, and the aperture intensive by diameter 2-5 millimeter on circular metal plate, spacing 10 millimeters sprays downwards, washes away flue gas, both can dissolve the nitrogen dioxide in flue gas, the heat in simultaneously stability flue gas.Flue gas is in operation and is taken off nitrogen dioxide by water-soluble, and the nitric oxide in flue gas and oxygen continue to be oxidized to nitrogen dioxide, continue again to be dissolved.In the process that this process rises at flue gas, not continuous operation stage by stage.Flue gas entering oxidation, the heat exchange zone time of staying is time of 4-6 second effectively can reduce nitrogen oxide.
Solution is in the process of dissolving nitrogen dioxide, also the heat in flue gas is absorbed, to be got back in the process of solution pool 10 by refluxing opening 9 at solution and also carry heat is got back in solution pond, circulate by heat exchanger outlet 14, water return outlet 15 with heating pump or circulate with softening water tank, reach energy-conservation object.
Embodiment 1
5 tons of normal-pressure hot-water boilers are processed by above-mentioned a kind of gas fired-boiler environmental-protection energy-saving device:
Gas approach temperature 130 DEG C, flue gas exit temperature is down to 60 DEG C
The inflow temperature of heat exchanger import 15 45 DEG C, the leaving water temperature of heat exchanger exit 14 60 DEG C, discharge 8m
3/ h, energy-saving efficiency 4.5%.
Gas approach nitrogen oxide 130mg/m
3, exhanst gas outlet nitrogen oxide 76mg/m
3, nitric efficiency 41.5%.If aggrandizement apparatus volume improves the flue gas holdup time in a device according to demand, it is lower that nitrogen oxide can fall.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " on ", D score, " vertically ", " level ", " top ", " end " " interior ", " outward ", " axis ", " radial direction ", the orientation of the instruction such as " circumference " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a gas fired-boiler environmental-protection energy-saving device, is characterized in that, comprises heat of oxidation switch, spray equipment, solution storage device, and described heat of oxidation switch is hollow cylindrical structure and vertically arranges,
The bottom of described hollow cylindrical structure is provided with flue gas and enters pipeline, and the top of described hollow cylindrical structure is provided with flue gas outflow conduit, and described flue gas enters pipeline and the tangential direction of flue gas outflow conduit all along described hollow cylindrical structure is horizontally disposed; Described spray equipment is arranged on the top of described hollow cylindrical structure; Described solution storage device connects described spray equipment by pipeline;
Described flue gas enters in pipeline the air nozzle being provided with and flow spiral can be made to move ahead, and described air nozzle is communicated with blower fan by wind conveying pipe road.
2. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 1, it is characterized in that, the pipeline between described solution storage device and described spray equipment is provided with spray pump.
3. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 1, it is characterized in that, be provided with waste heat utilization heat exchanger in described solution storage device device, the delivery port of described waste heat utilization heat exchanger and water return outlet are positioned at outside described solution storage device; The top of described solution storage device is also communicated with overflow pipe.
4. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 1, it is characterized in that, the bottom of described heat of oxidation switch is provided with solution return mouth, and described solution storage device is positioned at below described solution return mouth.
5. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 1, it is characterized in that, described spray equipment comprises circular metal plate, described circular metal plate is densely covered with aperture and the upper end of the hollow cylindrical structure of installing; Described circular metal board diameter is identical with the diameter of described hollow cylindrical structure.
6. a kind of gas fired-boiler environmental-protection energy-saving device according to any one of claim 1 to 5, it is characterized in that, described air nozzle comprises front flow guiding plate, rear deflector and swirl vane, described rear deflector is the first tubular structure, described first tubular structure comprises stub end and little head end, and described little head end is connected with described wind conveying pipe road; Described swirl vane side is fixedly connected with the madial wall of described first tubular structure; Described front flow guiding plate is fixedly connected with described swirl vane opposite side; Form air-flow between described front flow guiding plate and rear deflector and spray passage.
7. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 6, it is characterized in that, described front flow guiding plate comprises deflector main body and top cover, described deflector main body is the second tubular structure, described second tubular structure is identical with the first tubular structure, and described top cover is fixedly connected with described little head end.
8. a kind of gas fired-boiler environmental-protection energy-saving device according to claim 6, it is characterized in that, described front flow guiding plate is spherical structure.
9. the method for gas fired-boiler environmental-protection energy-saving device smoke treatment described in an any one of claim 1 to 8, it is characterized in that, step 1), blower fan enters the air nozzle of pipe end by being positioned at flue gas, eject spiral helicine air-flow, promote flue gas curl to run, the flow velocity of described air is greater than flue gas flow rate more than 10 times;
Step 2), the gaseous mixture of air and flue gas enters in the oxidation of hollow cylindrical, heat-exchange device with tangential direction, under effect of inertia, helical form rises, the gaseous mixture risen and the water bundle of the intensive ejection of spray equipment be crossing operation to dissolve the nitrogen dioxide in flue gas, the heat in simultaneously stability flue gas.
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| CN201510450718.5A CN105020730B (en) | 2015-07-28 | 2015-07-28 | A kind of gas fired-boiler environmental-protection energy-saving device |
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| CN201510450718.5A CN105020730B (en) | 2015-07-28 | 2015-07-28 | A kind of gas fired-boiler environmental-protection energy-saving device |
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| CN105020730B CN105020730B (en) | 2018-02-27 |
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| CN108361735A (en) * | 2018-01-22 | 2018-08-03 | 南京航空航天大学 | A kind of collection water conservancy diversion and the integrated leaf grating formula device of eddy flow and combustion chamber |
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| CN105020730B (en) | 2018-02-27 |
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