CN204563849U - Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer - Google Patents
Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer Download PDFInfo
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- CN204563849U CN204563849U CN201520184548.6U CN201520184548U CN204563849U CN 204563849 U CN204563849 U CN 204563849U CN 201520184548 U CN201520184548 U CN 201520184548U CN 204563849 U CN204563849 U CN 204563849U
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- flue gas
- tower
- filter course
- desulfurizer
- eliminating
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- Separation Of Particles Using Liquids (AREA)
Abstract
The utility model discloses a kind of biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer, the upper end of described gas wash tower is connected with described dehydrating tower by pipeline, the lower end sidewall of described dehydrating tower arranges exhanst gas outlet, described circulating water pool is installed on the below of described gas wash tower and dehydrating tower, the bottom of described gas wash tower arranges filter course, above described filter course, spray equipment is set, formed between described filter course and spray equipment and spray district, described spray equipment is connected with circulating water pool through water pump by water pipe.The advantage that the utility model has is: efficiency of dust collection on average reaches 94%, and desulfurization degree reaches 60%, and structure is simple, and transformation easily, can be stablized and reach emission request.
Description
Technical field
The utility model relates to biomass-burning Industrial Boiler flue gases purification field, is specially a kind of biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer.
Background technology
Boiler much needs the factory of thermal source and the common equipment by heat unit.But Industrial Boiler can produce a large amount of flue gases in running, nitrogen-containing oxide, oxysulfide and dust is there is in Industrial Boiler flue gas, if these can cause the materials such as the dust of environmental pollution to be directly discharged in air can cause severe contamination to air, affecting atmospheric environment, is that government prohibites.
In recent years, climatic deterioration problem receives that society is increasing to be paid close attention to, and reduces dust in air and nitrogen oxide, sulfur oxides level is increasingly important.Specify in " emission standard of air pollutants for boilers " GB13271-2014, key area boiler performs the special emission limit of atmosphere pollution, and the concentration of emission that in flue gas, particle, sulfur dioxide, nitrogen oxide allow is respectively 30mg/m
3, 200mg/m
3, 200mg/m
3.
Utility model content
The purpose of this utility model is the deficiency existed for the above prior art, provide a kind of efficiency of dust collection on average to reach 94%, desulfurization degree reach more than 60% biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer.
In order to realize the utility model object, the technical scheme that the utility model is taked is: biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer, comprise gas wash tower, dehydrating tower and circulating water pool, the upper end of described gas wash tower is connected with described dehydrating tower by pipeline, the lower end sidewall of described dehydrating tower arranges exhanst gas outlet, described circulating water pool is installed on the below of described gas wash tower and dehydrating tower, the bottom of described gas wash tower arranges filter course, above described filter course, spray equipment is set, formed between described filter course and spray equipment and spray district, described spray equipment is connected with circulating water pool through water pump by water pipe.
Described filter course comprises stainless (steel) wire and is laid on the bead composition above described stainless (steel) wire; Flue gas is divided into tiny stream stock and repeatedly transfers by described bead, thus flue gas is fully contacted with the moisture film on bead surface, repeatedly turn back and make dust generation inertia force separation and by film entrapment, meanwhile, bead makes flue gas stream even along gas wash tower cross-sectional distribution.
Described bead diameter 10-20mm, bead filter course thickness 100-200mm.
The gas approach of described gas wash tower is tangential air intake, for the formation of the dedusting of whirlwind film.
The pH value of the interior recirculated water of described circulating water pool, about 9, effectively can remove a part of SO in flue gas
2.
Compared with prior art, the advantage that the utility model has is: special low for biomass fired boiler design treatment cost, efficiency of dust collection on average reaches more than 94%, desulfurization degree reaches more than 60%, structure is simple, transformation easily, can be stable reach emission request.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer is described in detail.
Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer, as shown in Figure 1, comprise gas wash tower 2, dehydrating tower 1 and circulating water pool 3, the upper end of described gas wash tower 2 is connected with described dehydrating tower 1 by pipeline, the lower end sidewall of described dehydrating tower 1 arranges exhanst gas outlet, described circulating water pool 3 is installed on the below of described gas wash tower 2 and dehydrating tower 1, and the water in described gas wash tower 2 and dehydrating tower 1 falls into described circulating water pool 3 and recycles.The lower end of described gas wash tower 2 inside arranges filter course 6, above described filter course 6, arrange spray equipment 7, and formed between described filter course 6 and spray equipment 7 and spray district, described spray equipment 7 is connected with circulating water pool 3 through water pump 4 by water pipe 5.The height in described spray district is 30-100cm, and preferably, the height in described spray district is 70cm, can obtain best spraying effect like this.Wherein said spray equipment 7 can be the atomizer be installed on water pipe.Described filter course 6 comprises stainless (steel) wire and is laid on the some bead compositions on described stainless (steel) wire, flue gas is divided into tiny stream stock and repeatedly transfers by described bead, thus flue gas is fully contacted with the moisture film on bead surface, repeatedly turn back make dust produce inertia force be separated and by film entrapment, meanwhile, described bead makes flue gas stream even along the cross-sectional distribution of gas wash tower 2.The diameter of described bead is at 10-20mm, and described filter course thickness is 100-200mm.Preferably, the diameter of described bead is at 15mm, and described filter course thickness is 150mm, and can reach optimum balance like this, resistance is moderate, and treatment effect is obvious.The gas approach of described gas wash tower 2 is tangential air intake, for the formation of cyclone water-film dedusting.The pH value of described circulating water pool, about 9, can remove a part of SO in flue gas
2.Preferably, the cross sectional flow rate of described gas wash tower 2 is at 3-5/m
3.
Operation principle of the present utility model is as follows: flue gas is through glass bead layer, enter spray district above, water from water circulating pump is atomized through atomizer and is full of the cross section of gas wash tower 2, flue gas is fully contacted with water smoke, further trapping dust, water smoke falls to bead filter course, makes bead filter course cloth full water in the horizontal direction, and the dust under removing is taken out of glass bead layer and fallen gas wash tower 2 end, the ash settling basin of below is entered by outlet pipe; Flue gas leaves from gas wash tower 2 top and tangentially enters dehydrating tower 1 again, and utilize centrifugal force to make large water droplet be separated to dehydrating tower 1 wall, flue gas enters chimney from gas approach 8 side direction of dehydrating tower 1 bottom.By whirlwind, filtration and spray, dust is captured, dropping to containing dust concentration of flue gas meets emission request.Biomass molding fuel sulfur content is little, the SO of flue gas
2concentration generally can meet emission request; Because the dust produced after biomass combustion has certain alkalescence, make the pH value of recirculated water greatly about about 9, a part of SO in flue gas can be removed
2.
The course of work of the present utility model is as follows: the flue gas come from economizer tangentially enters gas wash tower bottom after air-introduced machine, carry out cyclonic separation, the part dust being separated to tower near wall by centrifugal action is separated by film entrapment, moisture film is formed under gas wash tower wall flow by the water section of filter course, then flue gas enters bead filter course (bead diameter 10-20mm above, bead filter course thickness 100-200mm), bead filter course is supported by stainless (steel) wire, flue gas is divided into tiny stream stock and repeatedly transfers by bead, thus flue gas is fully contacted with the moisture film on bead surface, repeatedly turn back make dust produce inertia force be separated and by film entrapment, simultaneously, bead makes flue gas stream even along gas wash tower cross-sectional distribution.Flue gas is through glass bead layer, enter spray district above, water from water circulating pump is atomized through atomizer and is full of the cross section of tower, flue gas is fully contacted with water smoke, further trapping dust, under part water smoke encounters gas wash tower wall formation water film flow simultaneously, avoid gas wash tower wall dust stratification, water smoke falls to bead filter course, make bead filter course cloth full water in the horizontal direction, and the dust under removing is taken out of glass bead layer and fallen at the bottom of gas wash tower, the ash settling basin (circulating water pool) of below is entered by outlet pipe; Flue gas leaves from the top of gas wash tower 2 and tangentially enters dehydrating tower again, and utilize centrifugal force to make large water droplet be separated to dehydrating tower wall, flue gas is from dehydrating tower lower side to entering chimney.By whirlwind, filtration and spray, dust is captured, dropping to containing dust concentration of flue gas meets emission request.Biomass molding fuel sulfur content is little, the SO of flue gas
2concentration generally can meet emission request; Because the dust produced after biomass combustion has certain alkalescence, make the pH value of recirculated water greatly about about 9, a part of SO in flue gas can be removed
2.
The water that gas wash tower uses flows to the circulating water pool below tower, and dust settling is separated, and water water pump is extracted into gas wash tower 2 and recycles, can effectively using water wisely.Because flue-gas temperature is higher, a part of water can be made to evaporate, circulating water pool is furnished with water monitor and filling pipe, filling pipe arranges control valve, when water level is reduced to warning line, water monitor signalling opening controlling valve make-up water source.Install blower fan between described dehydrating tower 1 and gas wash tower 2, described blower fan uses the low-noise fan that rotating speed is lower, can not increase the noise intensity of factory.
The utility model is integrated with the multiple method of cyclone water-film dedusting, dust removal by filtration and spraying and dedusting, and therefore efficiency of dust collection is high, as long as reasonable in design, flue gas can be made to reach emission request.
In the utility model, bead diameter thickness that is moderate, filter course is reasonable, good dedusting effect; Because the large resistance of the thickness of the too small easy blocking of diameter, filter course increases.Void tower cross sectional flow rate is excessive, and the volume of device is just little, but resistance is large, and dust removing effects can be deteriorated; Void tower cross sectional flow rate is too small, and dust removing effects may be got well, and resistance is little, but quantity of circulating water requires large, and the volume of device also becomes large.Tower height is inadequate, and flue gas can be made to be not easy evenly along the distribution of cross section, and water smoke is not easy sedimentation, and dust removing effects is deteriorated; Circulation injection flow rate also will mate.
Above-described embodiment is not to restriction of the present utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; various change and modification can also be made; therefore all equivalent technical schemes also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (5)
1. biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer, comprise gas wash tower, dehydrating tower and circulating water pool, it is characterized in that: the upper end of described gas wash tower is connected with described dehydrating tower by pipeline, the lower end sidewall of described dehydrating tower arranges exhanst gas outlet, described circulating water pool is installed on the below of described gas wash tower and dehydrating tower, the bottom of described gas wash tower arranges filter course, above described filter course, spray equipment is set, formed between described filter course and spray equipment and spray district, described spray equipment is connected with circulating water pool through water pump by water pipe.
2. biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer as claimed in claim 1, is characterized in that: described filter course comprises stainless (steel) wire and is laid on the bead composition above described stainless (steel) wire.
3. biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer as claimed in claim 2, is characterized in that: described bead diameter 10-20mm, bead filter course thickness 100-200mm.
4. biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer as claimed in claim 3, is characterized in that: the gas approach of described gas wash tower is tangential air intake.
5. biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer as claimed in claim 1, is characterized in that: the pH value of the interior recirculated water of described circulating water pool is 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184548.6U CN204563849U (en) | 2015-03-30 | 2015-03-30 | Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184548.6U CN204563849U (en) | 2015-03-30 | 2015-03-30 | Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer |
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| Publication Number | Publication Date |
|---|---|
| CN204563849U true CN204563849U (en) | 2015-08-19 |
Family
ID=53856543
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520184548.6U Expired - Fee Related CN204563849U (en) | 2015-03-30 | 2015-03-30 | Biomass fired boiler flue gas wet type combined dust-eliminating desulfurizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689673A (en) * | 2015-03-30 | 2015-06-10 | 广东震盈环保能源有限公司 | Wet type combined dust removal and desulfurization device for biomass combustion boiler |
-
2015
- 2015-03-30 CN CN201520184548.6U patent/CN204563849U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104689673A (en) * | 2015-03-30 | 2015-06-10 | 广东震盈环保能源有限公司 | Wet type combined dust removal and desulfurization device for biomass combustion boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20170330 |