CN102434183A - Air purifier for clearing away harmful gases and dust for long tunneling working surface - Google Patents
Air purifier for clearing away harmful gases and dust for long tunneling working surface Download PDFInfo
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- CN102434183A CN102434183A CN2011103620619A CN201110362061A CN102434183A CN 102434183 A CN102434183 A CN 102434183A CN 2011103620619 A CN2011103620619 A CN 2011103620619A CN 201110362061 A CN201110362061 A CN 201110362061A CN 102434183 A CN102434183 A CN 102434183A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention relates to an air purifier for clearing away harmful gases and dust for a long tunneling working surface, aiming at solving the problem that the ventilation for the tunneling working surface for construction of a long tunnel is difficult. A centrifugal fan is used to send harmful gases CO, CO2, NO, NO2, sulfides and dust in the tunnel into a degrading tool through a suction guard and a connecting pipe. The CO and NO, which are left after the reaction degradation, are sent into an absorption box through the connecting pipe, and the residual gases are filtered off water vapors by a porous fiber separating membrane, and the CO and a little of NO, which are left after the degradation and membrane filtration, are absorbed by a low-temperature pressure swing adsorption tower; the pressure swing absorption tower which absorbs the CO and NO is transported out of the tunnel, wherein the tower is heated to 80-135 DEG C by an electric heating tape in the tower to desorb the CO and NO. The air purifier can effectively prevent pollution to the tunneling working surface from harmful gases, and is suitable for clearing off harmful gases and dust.
Description
Technical field
The present invention relates to the pernicious gas degraded and absorption of only head length tunnel work face of Excavation Blasting, belong to the traffic engineering field.Be specially adapted to the traffic tunnel construction field, also be applicable to the mine working construction field that no gas is gushed out.
Background technology
The content of toxic gas is an important indicator estimating its safe class in the blasting fume that explosive produces when tunnel, hydraulic tunnel, mine working Blasting Excavation, and the explosion product of toxic gas is particularly CO, CO mainly
2, NOx, sulfide, dust.The affinity of ferroheme is bigger 250～300 times than the affinity of oxygen in carbon monoxide and the red blood cell, after it is inhaled into human body, has hindered the normal combination of oxygen and ferroheme, the partes corporis humani is organized and cell produces anoxia phenomenon, causes to poison so that dead.NOx is soluble in water, when sucking the human lung, just on the surface mucous of lung, produces corrosion, and intense stimulus property is arranged.Can cause lung's edema when concentration is higher and fatal.
Hydrogen sulfide (H
2S) be a kind of colourless gas that rotten-egg odour is arranged, soluble in water, have very strong toxicity, can make septicemia, eyes mucous membrane and respiratory tract there are the intense stimulus effect.Eyes there is the intense stimulus effect.SO
2Contact generation sulfuric acid with steam, to the respiratory apparatus effect, stimulate throat, bronchus inflammation, expiratory dyspnea causes pulmonary edema when serious.
As explosives, toxic gases, dust, digging shovel loader, a large transport vehicle engine emissions Cha toxic gases seriously affect the health of construction workers, the existing single head long tunnel ventilation with a mechanical ventilator will deliver fresh air through the ventilation duct into the heading face.Dilution driving face wind toxic gas, dust are taken pernicious gas out of tunnel through the blast that blower fan provides then, and crushing loses greatly, ventilation time is long, efficient is low.Owing to the existing method of ventilation of the increase of long tunnel flowing resistance can't in time be discharged less than 300m short distance and the long requirement of satisfying construction apart from the tunnel pernicious gas of big 3000m.Apart from the increasing of tunnel, construction environment, drafting efficiency, air quality are proposed increasingly high requirement, and existing method of ventilation can not satisfy the requirement of constructing tunnel along with long.
Summary of the invention
Technical problem to be solved
Technical problem to be solved by this invention provides a kind of air cleaner of removing long tunnel pernicious gas, dust, and existing method of ventilation crushing loses greatly, ventilation time is long, efficient is low to overcome, and the device damage rate is high, the shortcoming that use cost is high.
Technical scheme
Technical problem to be solved by this invention provide a kind of among the long tunnel the direct tunnel air cleaning equipment of degraded and absorption pernicious gas, dust; Directly in construction tunnel, use; Need not length apart from ventilating duct, just can realize the purification process of high efficiency, high selectivity pernicious gas, dust.
Comprise following steps successively:
First step: 5～15min after the Tunnel Blasting, said pernicious gas CO, CO
2, NO, NO
2, sulfide, dust, sucking apart from work plane 20～50m through portable ventilation fan, send into the degraded pond;
Second step: said portable ventilation fan, adopt jubilee wagen with Roots's ventilation fan, said pernicious gas sulfide, dust are sent into the degraded pond through blower fan;
Third step: said pernicious gas CO, CO
2, NO, NO
2, sulfide, dust, through the alkali compounds reaction in degraded pond, the CO in the degraded pernicious gas
2, NO, NO
2, sulfide, dust, and filter steam through the porous fibre diffusion barrier;
The 4th step: said low temperature transformation CO absorption, NO, adsorb the CO behind degraded, the membrane filtration, little amount of N O through the low temperature pressure-swing absorber;
The 5th step: CO absorption, NO are taken off in temperature heating in said, and pressure-swing absorber is transported the tunnel, are heated to 80～135 ℃ and desorption CO, NO through the electric heating heating tape in the adsorption tower.
One of above-mentioned tunnel work face pernicious gas, preferred version of dust sweep-out method are that said portable ventilation fan adopts centrifugal fan.
Two of above-mentioned tunnel work face pernicious gas, the preferred version of dust sweep-out method is the alkali compounds sodium carbonate in degraded pond, concentration of aqueous solution 0.1～7%, preferred 0.5%.
Three of above-mentioned tunnel work face pernicious gas, the preferred version of dust sweep-out method is 0～30 ℃ of the temperature of said low temperature transformation absorption, pressure 1～8kPa, preferred 2～4kPa.
Four of above-mentioned tunnel work face pernicious gas, the preferred version of dust sweep-out method is that said middle temperature heating is taken off 0～150 ℃ of CO absorption, NO temperature, preferred 80～100 ℃.
Five of above-mentioned tunnel work face pernicious gas, the preferred version of dust sweep-out method is that the porous fibre diffusion barrier of said filtration steam adopts the series connection form.
Beneficial effect
With existing only head length tunnel work face ventilation mechanical type draft type that adopts is outside the hole, to be pressed into fresh air dilution driving face pernicious gas, dust concentration, changes into and regularly passes through portable ventilation fan with pernicious gas CO, CO in the long tunnel
2, NO, NO
2, sulfide, dust directly sends into the degraded pond through blower fan; Low temperature transformation CO absorption, NO, the pernicious gas transport distance is short, drafting efficiency is high;
Avoiding the existing long tunnel driving face mechanical type draft type that adopts of ventilating is outside the hole, to be pressed into fresh air to dilute the disadvantage that driving face pernicious gas, dust concentration pollute whole tunnel; Shortened ventilation time; Use cost is low; Help accelerating construction progress, improve the tunnel air quality.
Description of drawings
Fig. 1 is pernicious gas, dust degraded, adsorption structure sketch map;
Fig. 2 is pernicious gas, dust degrading texture sketch map;
Fig. 3 is CO, NO adsorption structure sketch map.
The specific embodiment
Further set forth the present invention below in conjunction with accompanying drawing and embodiment.Should be understood that these embodiment only to be used to the present invention is described and be not used in remarkable scope of the present invention.Should be understood that in addition this area engineers and technicians do certain change or modification after having read the content that the present invention tells about, these equivalent form of values fall within the application's appended claims institute restricted portion.
Be used for realizing that the degraded and the adsorbent equipment of the said pernicious gas CO in tunnel, CO2, NO, NO2, sulfide, dust comprise: a suspended hood, Roots's ventilation fan is used for carrying pernicious gas, dust, comprises the air in the tunnel; Pernicious gas, dust degraded pond; CO, NO adsorption box; Steel pipe or PTFE tube connector are owing to the importing of the gas in the tunnel is degraded pond and adsorption box, and purified gas is derived; The drencher that one several waterfog heads of cover and self priming pump are formed.
The air cleaner of removing long tunnel pernicious gas of the present invention, dust; Adopt Roots's ventilation fan 3; Pernicious gas CO in the tunnel, CO2, NO, NO2, sulfide, dust through suspended hood 1, ventilation fan tube connector 2, degraded pond tube connector 5, are sent into degraded pond 6.Said pernicious gas CO2, NO2, sulfide, dust, part NO are after the 6 reaction degradeds of degraded pond, and remaining CO, NO send into adsorption box 8 through adsorption box tube connector 7, and remaining air enters in the tunnel through stack 10.
Degraded passage 21 is dividing plate 14 and cabinet panel part among Fig. 2; When pernicious gas gets into degraded passage 21 through tube connector 5; To the degrade aqueous solution 12 of the carbonated sodium in the pond casing 6 of self priming pump 13 sprays into degraded passage 21 through water pipe 22, the gas after the degradation reaction through water-absorption fiber filtering layer 17 drainages after adsorption box tube connector 7 is delivered to adsorption box.
Gas through behind degradation reaction, the drainage is sent into adsorption box among Fig. 3, and the CO in the gas, NO are adsorbed on adsorbent bed 9, and remaining air is derived through stack; With adsorption box and be connected degraded pond, the centrifugal fan on the fixed mount, transport the tunnel, outside the tunnel, adopt electricity companion heating tape 20 heating adsorption boxes; The adsorbent bed desorption; Open centrifugal fan 3, blow out in the adsorption box at CO, NO, dehydrating in the adsorption box adopted the dry bag 18 that silica gel is housed.See off in the process in tunnel at clearing machine, will the degrade aqueous solution 12 of the carbonated sodium in the box body 6 of self priming pump 13 is sent into atomizer 24 through sparge pipe 23, pernicious gas, dust in the aqueous solution of atomizer 24 ejections can fully be degraded the tunnel.
5～15min after the explosion of tunnel work face apart from driving face 20～50min, regularly passes through Roots's ventilation fan with said pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust sends into degraded pond, pressure 40kPa, air quantity 2300m through blower fan
3/ h sucks pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust, send into the degraded pond, through with the alkali compounds reaction in degraded pond or clean, preferred alkali compounds sodium carbonate is difficult to CO, little amount of N O, steam with the alkali compounds reaction, after the porous fibre diffusion barrier filters steam.CO, little amount of N O after filtering from the porous fibre diffusion barrier; Get into the low temperature pressure-swing absorber absorption of 10～30 ℃ of temperature; CO, little amount of N O are adsorbed among the adsorption tower; Then pressure-swing absorber absorption is transported the tunnel, adsorption tower is heated to 80～135 ℃, preferred 100 ℃ and desorption CO, NO through the electric heating heating tape.
5～15min after the explosion of tunnel work face apart from driving face 20～50min, regularly passes through Roots's ventilation fan with said pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust sends into degraded pond, pressure 30kPa, pressure 3kPa, air quantity 2700m through blower fan
3/ h sucks pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust, send into the degraded pond, through with the alkali compounds reaction in degraded pond or clean, preferred alkali compounds sodium carbonate is difficult to CO, little amount of N O, steam with the alkali compounds reaction, after the porous fibre diffusion barrier filters steam.CO, little amount of N O after filtering from the porous fibre diffusion barrier; Pressure 3kPa; Get into the low temperature pressure-swing absorber absorption of 10～30 ℃ of temperature, CO, little amount of N O are adsorbed among the adsorption tower, then pressure-swing absorber absorption are transported the tunnel; Through the electric heating heating tape adsorption tower is heated to 80～135 ℃, preferred 120 ℃ and desorption CO, NO.
5～15min after the explosion of tunnel work face apart from driving face 20～50min, regularly passes through Roots's ventilation fan with said pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust sends into degraded pond, pressure 40kPa, pressure 2kPa, 2900m through blower fan
3/ h sucks pernicious gas CO, CO in the tunnel
2, NO, NO
2, sulfide, dust, send into the degraded pond, through with the alkali compounds reaction in degraded pond or clean, preferred alkali compounds sodium carbonate is difficult to CO, little amount of N O, steam with the alkali compounds reaction, after the porous fibre diffusion barrier filters steam.CO, little amount of N O after filtering from the porous fibre diffusion barrier; Pressure 2kPa; Get into the low temperature pressure-swing absorber absorption of 10～30 ℃ of temperature, CO, little amount of N O are adsorbed among the adsorption tower, then pressure-swing absorber absorption are transported the tunnel; Through the electric heating heating tape adsorption tower is heated to 80～135 ℃, preferred 120 ℃ and desorption CO, NO.
Claims (7)
1. air cleaner of removing long tunnel driving face pernicious gas, dust comprises following steps successively:
(1) 5～15min after the Tunnel Blasting, said pernicious gas CO, CO
2, NO, NO
2, sulfide, dust, sucking apart from work plane 20～50m through portable ventilation fan, send into the degraded pond;
(2) said pernicious gas CO, CO
2, NO, NO
2, sulfide, dust, through the alkali compounds reaction in degraded pond, the CO in the degraded pernicious gas
2, NO, NO
2, sulfide, dust, and filter steam through the porous fibre diffusion barrier;
(3) said low temperature transformation CO absorption, NO adsorb the CO behind degraded, the membrane filtration, little amount of N O through the low temperature pressure-swing absorber;
(4) CO absorption, NO are taken off in the temperature heating in said, and pressure-swing absorber absorption is transported the tunnel, are heated to 80～135 ℃ and desorption CO, NO through the electric heating heating tape in the adsorption tower.
2. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, said portable ventilation fan adopts roots blower.
3. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, the alkali compounds aqueous sodium carbonate in said degraded pond, concentration of aqueous solution 0.1～7%, preferred 0.5%.
4. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, 0～30 ℃ of the temperature of said low temperature transformation absorption, pressure 1～8kPa, preferred 2～4kPa.
5. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, said middle temperature heating is taken off 0～150 ℃ of CO absorption, NO temperature, preferred 80～100 ℃.
6. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, the porous fibre diffusion barrier of said filtration steam adopts the series connection form.
7. tunnel work face pernicious gas according to claim 1, dust sweep-out method is characterized in that, said pressure-swing absorber adsorbent is crossed to adopt and carried Cu (I) 13X molecular sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103620619A CN102434183A (en) | 2011-11-03 | 2011-11-03 | Air purifier for clearing away harmful gases and dust for long tunneling working surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103620619A CN102434183A (en) | 2011-11-03 | 2011-11-03 | Air purifier for clearing away harmful gases and dust for long tunneling working surface |
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| Publication Number | Publication Date |
|---|---|
| CN102434183A true CN102434183A (en) | 2012-05-02 |
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|---|---|---|---|
| CN2011103620619A Pending CN102434183A (en) | 2011-11-03 | 2011-11-03 | Air purifier for clearing away harmful gases and dust for long tunneling working surface |
Country Status (1)
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971004A (en) * | 2014-05-13 | 2014-08-06 | 北京科技大学 | Method for computing coalface safety through CO flux in roadway |
| CN104056514A (en) * | 2013-03-23 | 2014-09-24 | 吕荣才 | Collection and utilization system of polluting gases and particles |
| CN104596374A (en) * | 2015-01-07 | 2015-05-06 | 浙江省隧道工程公司 | Blasting process for tunnel karst cave construction |
| CN104728947A (en) * | 2015-03-26 | 2015-06-24 | 天津理工大学 | Water filtering type air purifier |
| CN106032060A (en) * | 2015-03-16 | 2016-10-19 | 研能科技股份有限公司 | Three-dimensional molding device and powder filtration system thereof |
| CN103971004B (en) * | 2014-05-13 | 2016-11-30 | 北京科技大学 | A kind of method utilizing CO flux in tunnel to calculate development end safety |
| CN106422768A (en) * | 2016-12-22 | 2017-02-22 | 安徽理工大学 | Method and device for detecting fume in explosion container |
| CN108119179A (en) * | 2016-11-26 | 2018-06-05 | 中铁四局集团有限公司 | Portable dust removal falls evil equipment suitable for tunnel construction uses |
| CN109173580A (en) * | 2018-09-19 | 2019-01-11 | 苏州经贸职业技术学院 | A kind of pressure varying adsorption gas separating equipment energy-saving control device |
| CN109966906A (en) * | 2019-04-25 | 2019-07-05 | 西安建筑科技大学 | A kind of recycle device and application method of constructing tunnel pernicious gas |
| CN110026055A (en) * | 2019-04-29 | 2019-07-19 | 西安科技大学 | A kind of coal working face CO adsorption eliminating device and method |
| CN112546818A (en) * | 2020-12-10 | 2021-03-26 | 中煤科工集团重庆研究院有限公司 | Device and method for preventing and controlling hydrogen sulfide and reducing dust on underground coal face of coal mine |
| CN113404527A (en) * | 2021-06-16 | 2021-09-17 | 中国十七冶集团有限公司 | A dust filtration purification device for in construction tunnel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3900973C1 (en) * | 1989-01-14 | 1990-06-13 | Heinz Dipl.-Ing. 4390 Gladbeck De Hoelter | Filter unit with progressively responding warning and extinguishing device |
| JPH06319943A (en) * | 1993-05-18 | 1994-11-22 | Hitachi Zosen Corp | Method for removing nox by adsorption |
| JPH0842300A (en) * | 1994-07-27 | 1996-02-13 | Fujita Corp | Dust elimination treatment method and dust elimination treatment device in tunnel work |
| JP2002339700A (en) * | 2001-05-11 | 2002-11-27 | Hino Motors Ltd | Dust collector in tunnel |
| CN101920026A (en) * | 2009-12-31 | 2010-12-22 | 周云正 | Device for sterilizing and purifying air in tunnel |
| CN101992013A (en) * | 2010-11-26 | 2011-03-30 | 合肥工业大学科教开发部 | Waste gas purifying system for highway tunnel |
-
2011
- 2011-11-03 CN CN2011103620619A patent/CN102434183A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3900973C1 (en) * | 1989-01-14 | 1990-06-13 | Heinz Dipl.-Ing. 4390 Gladbeck De Hoelter | Filter unit with progressively responding warning and extinguishing device |
| JPH06319943A (en) * | 1993-05-18 | 1994-11-22 | Hitachi Zosen Corp | Method for removing nox by adsorption |
| JPH0842300A (en) * | 1994-07-27 | 1996-02-13 | Fujita Corp | Dust elimination treatment method and dust elimination treatment device in tunnel work |
| JP2002339700A (en) * | 2001-05-11 | 2002-11-27 | Hino Motors Ltd | Dust collector in tunnel |
| CN101920026A (en) * | 2009-12-31 | 2010-12-22 | 周云正 | Device for sterilizing and purifying air in tunnel |
| CN101992013A (en) * | 2010-11-26 | 2011-03-30 | 合肥工业大学科教开发部 | Waste gas purifying system for highway tunnel |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104056514A (en) * | 2013-03-23 | 2014-09-24 | 吕荣才 | Collection and utilization system of polluting gases and particles |
| CN103971004B (en) * | 2014-05-13 | 2016-11-30 | 北京科技大学 | A kind of method utilizing CO flux in tunnel to calculate development end safety |
| CN103971004A (en) * | 2014-05-13 | 2014-08-06 | 北京科技大学 | Method for computing coalface safety through CO flux in roadway |
| CN104596374A (en) * | 2015-01-07 | 2015-05-06 | 浙江省隧道工程公司 | Blasting process for tunnel karst cave construction |
| CN106032060B (en) * | 2015-03-16 | 2018-06-12 | 研能科技股份有限公司 | Stereoscopic moulding device and its powder filter system |
| CN106032060A (en) * | 2015-03-16 | 2016-10-19 | 研能科技股份有限公司 | Three-dimensional molding device and powder filtration system thereof |
| CN104728947A (en) * | 2015-03-26 | 2015-06-24 | 天津理工大学 | Water filtering type air purifier |
| CN108119179A (en) * | 2016-11-26 | 2018-06-05 | 中铁四局集团有限公司 | Portable dust removal falls evil equipment suitable for tunnel construction uses |
| CN108119179B (en) * | 2016-11-26 | 2024-05-10 | 中铁四局集团有限公司 | Mobile dust and harm removing equipment and dust and harm removing method suitable for tunnel construction |
| CN106422768A (en) * | 2016-12-22 | 2017-02-22 | 安徽理工大学 | Method and device for detecting fume in explosion container |
| CN109173580A (en) * | 2018-09-19 | 2019-01-11 | 苏州经贸职业技术学院 | A kind of pressure varying adsorption gas separating equipment energy-saving control device |
| CN109966906A (en) * | 2019-04-25 | 2019-07-05 | 西安建筑科技大学 | A kind of recycle device and application method of constructing tunnel pernicious gas |
| CN110026055A (en) * | 2019-04-29 | 2019-07-19 | 西安科技大学 | A kind of coal working face CO adsorption eliminating device and method |
| CN112546818A (en) * | 2020-12-10 | 2021-03-26 | 中煤科工集团重庆研究院有限公司 | Device and method for preventing and controlling hydrogen sulfide and reducing dust on underground coal face of coal mine |
| CN113404527A (en) * | 2021-06-16 | 2021-09-17 | 中国十七冶集团有限公司 | A dust filtration purification device for in construction tunnel |
| CN113404527B (en) * | 2021-06-16 | 2023-01-17 | 中国十七冶集团有限公司 | A dust filtration purification device for in construction tunnel |
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Application publication date: 20120502 |