CN105536496A - Intensified disturbance mass transferring device and method for desulfurization of boiler flue gas - Google Patents
Intensified disturbance mass transferring device and method for desulfurization of boiler flue gas Download PDFInfo
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- CN105536496A CN105536496A CN201610072595.0A CN201610072595A CN105536496A CN 105536496 A CN105536496 A CN 105536496A CN 201610072595 A CN201610072595 A CN 201610072595A CN 105536496 A CN105536496 A CN 105536496A
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- flue gas
- disturbance
- mass transfer
- motor
- boiler flue
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/126—Semi-solid reactants, e.g. slurries
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses an intensified disturbance mass transferring device and method for desulfurization of boiler flue gas. The device comprises a fixed hook and a motor, which are mounted under a supporting beam of a spraying layer of a boiler flue gas desulfurization tower, wherein the fixed hook is arranged at the top of the motor; an output shaft at the bottom of the motor is a rotary shaft; a transmission disc is arranged at the tail part of the rotary shaft; a nail screw circular disc is fixed on the transmission disc; and a plurality of screw strips are mounted at the outer edge of the nail screw circular disc. According to the device and the method, disclosed by the invention, mixed mass transferring of desulfurization slurry and raw flue gas is intensified through a forced disturbance manner; and the aims that the boiler desulfurization efficiency is improved, the power consumption of a slurry circulating pump is reduced, equipment is safe and reliable, arrangement and modification are convenient, environmental protection is realized and standards are reached can be realized.
Description
Technical field
The present invention relates to a kind of boiler flue gas desulfurization strengthening disturbance mass transfer and carry efficacious prescriptions method and disturbance device, belong to the environmental protection equipment technical field proposing effect and reducing energy consumption up to standard.
Background technology
Along with China's rapid development of economy, the ratio of coal in China's energy resource structure is up to 76.2%, and coal fire discharged sulfur dioxide also (accounts for SO continuous increasing
290% of total release), for years more than 2,000 ten thousand tons, cause China's Acid Rain Pollution area to expand rapidly (accounting for 30% of area), huge infringement is caused to aspects such as China crops, forest and healths.Sulfur dioxide has accounted for 2% of GDP to the direct economic loss that Chinese national economy causes, and seriously hinders China's expanding economy, becomes the key factor of restriction China economy, social sustainable development, therefore, to SO
2the control of discharge is imperative.For controlling coal-burning power plant Air Pollutant Emission, improve China's air quality and control of acid rain pollutes, State Environmental Protection Administration and national development and reform committee member take the multinomial New Measure being intended to strengthen further coal-burning power plant's sulfur dioxide pollution control.
For atmosphere pollution of keeping under strict control, create SO
2the situation that discharge standard improves day by day: start on January 1st, 2004 perform " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2003) sulfur dioxide emissioning concentration in new power plant construction boiler smoke by former 1200mg/Nm
3drop to 400mg/Nm
3; Fire coal boiler fume sulfur dioxide (SO2) emissions, according to national standard " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011 substitutes GB13223-2003) regulation: SO
2≤ 200mg/Nm
3(existing stove), SO
2≤ 100mg/Nm
3(newly-built stove); And " emission standard of air pollutants for boilers " (GB13271-2014 substitutes GB13271-2001), highlight again key area SO 2 from fume discharge standard and improve." key area prevention and control of air pollution " 12 " planning " that State Council's reply is implemented is wherein clear and definite: flue gas desulfurization facilities will canceling gas bypass according to the rules, strengthens the supervision and management to desulfurization equipment, guarantees that synthesis desulfurating efficiency reaches more than 90%; Priority control district is according to≤50mg/Nm
3standard, the coal unit of stably reaching standard can not must carry out transformation up to standard to smoke dust discharge concentration.
No. 14th, Environmental Protection Department 2013, about the bulletin performing the special emission limit of atmosphere pollution, carries out emphasis geographic coverage clear and definite, and covers most of coal-burning boiler.
Priority control district scope
From 2004 so far, boiler smoke SO
2discharge, from 1200mg/Nm
3drop to 400mg/Nm
3, 400mg/Nm
3drop to 200mg/Nm
3, 200mg/Nm
3drop to 100mg/Nm
3, key area is from 100mg/Nm
3drop to 50mg/Nm
3; Environmental protection charge is charged from " dicontrolled area " pilot and is become nationwide charge, SO
2discharge paying price to be carried by 0.211 yuan/kg be 0.633 yuan/kg, in recent years raise the price again to being not less than 1.2632 yuan/kg.Various places environmental administration, while monitoring discharge, continues to increase the fine dynamics of discharge beyond standards and even give stricts orders the rectification that stops production.On December 3rd, 2015 national environmental protection portion, the National Development and Reform Commission, National Energy Board combine the notice issued about printing and distributing " implementing in full coal-burning power plant's minimum discharge and reducing energy consumption programme of work "; require the year two thousand twenty, all coal-burning power plants possessing transformation condition, the whole nation strive realizing minimum discharge and sulfur dioxide emissioning concentration≤35mg/Nm
3.
Known on ancestor, due to the raising day by day of environmental protection standard, many have the firm newly-built desulfurizing tower put into operation soon of the appearance of enterprise of boiler to be just difficult to meet flue gas desulfurization emission request, and a cost huge sum of money of having to carries out rebuilding to meet the fixed environment protection standard requirement of environmental administration.
The desulfurization method main technique of current China coal-burning boiler is limestone-gypsum method (accounting for 95% of flue gas desulfurization), in addition a small amount of quick lime-gypsum, alkaline process or Dual alkali, magnesium oxide method, ammonia process etc., this kind of wet desulfuration tower accounts for more than 98% of flue gas desulfurization.Therefore the improved efficiency that this technical method and device are mainly used in boiler desulfurization tower is transformed, to meet the environment protection emission requirement day by day improved, reach environmental protection and energy-conservation effect, and the investment of thrifty large-scale redevelopment and operating cost, social benefit is also remarkable.
For this reason, effect method and apparatus is carried in the boiler flue gas desulfurization strengthening disturbance that the present invention have studied a kind of novelty, flue gas and slurries in existing coal-fired boiler desulfurizing tower can be utilized better to spray the space layer of mixed zone, under the prerequisite ensureing original system safety, reliable, long-term operation, by adding this strengthening disturbance mass transfer method and device, reach the desulfuration efficiency effectively promoting coal-fired boiler desulfurizing tower, realize energy-conservation, reduce investment and continue effect up to standard with operating cost, environmental protection.
Summary of the invention
The object of this invention is to provide a kind of boiler flue gas desulfurization strengthening disturbance mass transfer apparatus and method, this device and method makes the system of desulfurization renovation and improving simple and direct reliable, continuous, the thrifty investment of handling safety and operating cost, energy consumption is low, the feature of environmental protection good.
For achieving the above object, the present invention is by the following technical solutions:
A kind of boiler flue gas desulfurization strengthening disturbance mass transfer apparatus, comprise and be installed on fixed hook under boiler flue desulfuring towers spraying layer brace summer and motor, described fixed hook is arranged at motor top, output shaft bottom described motor is turning cylinder, turning cylinder afterbody is provided with drive plate, described drive plate is fixed with nail silk disk, the outer rim of nail silk disk is provided with some silk ribbons.
Further, described motor is the low voltage, high-speed motor of heatproof, corrosion-resistant, waterproof, small-power type.
Further, described turning cylinder is furnished with 1 layer or Multi-layer transmission dish, every layer of drive plate is provided with nail silk disk and silk ribbon.
Further, described boiler flue gas desulfurization strengthening disturbance mass transfer apparatus is multiple, is evenly arranged and district is arranged in the strengthening disturbance be installed in desulfurizing tower, described strengthening disturbance arrange district be positioned at desulfurizing tower spraying layer below.
Further, described fixed hook is by glass cord and high temperature resistant alicyclic vinyl glass flake plasticine, and flexible suspension is on spraying layer brace summer.
Further, described silk ribbon is arranged on nail silk disk by screw fastening.
Further, the material of described silk ribbon is that the nylon of Centrifugal cord type lawn-mower is beaten the grass rope.
A kind of boiler flue gas desulfurization strengthening disturbance mass transfer of above-mentioned device puies forward efficacious prescriptions method, this device is installed on boiler desulfurization tower spraying layer bottom, at slurries spray with in flue gas adverse current mixed zone, through the motor that multiple stage level is uniform, motor drives turning cylinder to rotate, drive 1 layer or the disturbance of multilayer silk ribbon generation high speed, now due to the decrease speed of slurries, the rate of climb of flue gas is all less than the rotation disturbance speed of silk ribbon, therefore the liquid in space, gas will be forced to be uniformly mixed, larger desulfurizing agent drop is torn fragmentation by silk ribbon, thus SO in desulfurizing agent drop and flue gas is enhanced
2mass transfer and disturbance mixing, thus reach and promote effect of desulfuration efficiency.
Further, the voltage of described motor is 12V or 24V; Motor power line is drawn after outside desulfurizing tower, concentrates to carry out joining and powers and control the quantity that puts into operation; The separate unit power of motor is less than 100W.
Further, the number of plies of described silk ribbon is 1 ~ 4 layer, and the length of silk ribbon is within the scope of 0.5 ~ 1.5m; Peripheral speed >=the 160m/s of silk ribbon outer rim, and upwards flue gas flow rate≤15m/s, downward slurries spray flow velocity≤15m/s.
The invention has the beneficial effects as follows:
With society, increasingly harsh discharge standard and regulatory requirements are discharged to boiler flue gas sulphur dioxide for meeting Environmental Protection in China, Multi-layer sprinkling formula desulfurizing tower carries out strengthening disturbance mass transfer apparatus, than current newly-increased spraying layer or increasing spray flux, adopt Double-Tower Structure, strengthen tower diameter reduction flue gas flow rate, interpolation Desulfurization synergist etc. reforming technology to compare, with the obvious advantage; As compared with increase spraying layer, tool of the present invention has the following advantages:
1, the reforming technology such as newly-increased spraying layer, investment for trnasforming urban land is large, the duration reaches the several months, though can promote desulfuration efficiency, and operating cost strengthens.And first the advantage of this method is directly to install additional in existing Multi-layer sprinkling formula desulfurizing tower disturbance strengthening mass transfer apparatus, its system equipment is reliably simple and direct, and the rebuilding construction duration is in 1 week, and reduced investment, operating cost reduce.
2, the desulfurized effect of newly-increased 1 layer of spraying layer, with set up 1 layer/overlapping disturbance, to strengthen mass transfer apparatus suitable.Increase the liquid-gas ratio that spraying layer is only increased desulfurizing tower, add the reaction time; And disturbance strengthening mass transfer apparatus, then in desulfurization slurry spraying layer atomizer whereabouts slurries and sulfur-containing smoke gas mixed zone upwards, got rid of by the throwing of high speed silk ribbon that strong agitation is carried out in disturbance mixing, drop tears and " cavitation " effect etc., the mass transfer exchange process of strengthening gas-liquid, therefore improve desulfuration efficiency.
3, the power consumption of newly-increased 1 layer of spraying layer, far above setting up 1 layer/cover disturbance strengthening mass transfer apparatus.With regard to the desulfurizing tower of 6 rice diameters, the serum recycle pump power of 1 layer of spraying layer is about 150kw, and the electrical power of disturbance strengthening mass transfer apparatus is about 1kw; Its power consumption is only 1/150 of newly-increased 1 layer of spraying layer, greatly reduces operating cost and energy-saving benefit as seen.
4, newly-increased spraying layer, its spray flux, power consumption, for fixing non-adjustable, as the mode reducing slurry circulating pump outlet valve will be adopted to reduce spray flux and power consumption, then can affect nozzle atomization effect, lose more than gain; And the silk ribbon length, quantity, the number of plies etc. of disturbance strengthening mass transfer apparatus, all can carry out increase and decrease according to desulfurized effect and distribute rationally, promote effect to receive better desulfuration efficiency.
5, newly-increased spraying layer, the replacing after the erosion corrosion of its slurry circulating pump, the replacing etc. after nozzle wear erosion, all needs a large amount of maintenance costs, and the machine envelope of pump also consumes energy for a long time with cooling water; And the consumable accessory of disturbance strengthening mass transfer apparatus is high speed silk ribbon, its material is that the nylon of Centrifugal cord type lawn-mower is beaten the grass rope, wear-resisting, anti-aging, corrosion-resistant, inexpensive and upgrade and facilitate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the installation of the present invention in desulfurizing tower and working region schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 a kind of boiler flue gas desulfurization strengthening disturbance mass transfer apparatus, comprise and be installed on fixed hook 1 under boiler flue desulfuring towers spraying layer brace summer and motor 2, fixed hook 1 is arranged at motor 2 top, output shaft bottom described motor 2 is turning cylinder 3, turning cylinder 3 afterbody is provided with drive plate 4, described drive plate 4 is fixed with nail silk disk 5, the outer rim of nail silk disk 5 is provided with some silk ribbons 6.During motor 2 High Rotation Speed, silk ribbon 6 will be driven to spray district's High Rotation Speed disturbance at flue gas and desulfurization slurry, play the function of strengthening mass transfer.
Motor 2 is the low voltage, high-speed motor of heatproof, corrosion-resistant, waterproof, small-power type.
Turning cylinder 3 is furnished with 1 layer or Multi-layer transmission dish 4, every layer of drive plate 4 is provided with nail silk disk 5 and silk ribbon 6.
For ensureing that disturbance is without dead angle, boiler flue gas desulfurization strengthening disturbance mass transfer apparatus is multiple, is evenly arranged and district is arranged in the strengthening disturbance be installed in desulfurizing tower, strengthening disturbance arrange district be positioned at desulfurizing tower spraying layer below.
Fixed hook 1 is by glass cord and high temperature resistant alicyclic vinyl glass flake plasticine, and flexible suspension, on spraying layer brace summer, can play effectiveness in vibration suppression simultaneously.
Silk ribbon 6 is arranged on nail silk disk 5 by screw fastening, and is convenient to disassembling, assembling and replacing or interpolation.
The material of silk ribbon 6 is that the nylon of Centrifugal cord type lawn-mower is beaten the grass rope, wear-resisting, anti-aging, corrosion-resistant, purchases facility.
Utilize the boiler flue gas desulfurization of said apparatus to strengthen disturbance mass transfer to put forward efficacious prescriptions method and be:
As shown in Figure 2, Ou Ruogan spraying layer is provided with in desulfurizing tower, all there is disturbance to strengthen mass transfer below every layer of spraying layer and arrange district, boiler flue gas desulfurization strengthening disturbance mass transfer apparatus is installed on boiler desulfurization tower spraying layer bottom, at slurries spray with in flue gas adverse current mixed zone, through the motor 2 that multiple stage level is uniform, motor 2 drives turning cylinder 3 to rotate, 1 layer or multilayer silk ribbon 6 is driven to produce high speed disturbance, now due to the decrease speed of slurries, the rate of climb of flue gas is all less than the rotation disturbance speed of silk ribbon 6, therefore the liquid in space, gas will be forced to be uniformly mixed, larger desulfurizing agent drop is torn fragmentation by silk ribbon, thus SO in desulfurizing agent drop and flue gas is enhanced
2mass transfer and disturbance mixing, thus reach and promote effect of desulfuration efficiency.
The voltage of motor 2 is 12V or 24V, belongs to safe voltage, meets " electric industry safety code "; Motor power line is drawn after outside desulfurizing tower, concentrates to carry out joining and powers and control the quantity that puts into operation; The separate unit power of motor is less than 100W, can reduce the number of units energy-conservation of coming into operation of slurry circulating pump.
The number of plies of silk ribbon 6 is 1 ~ 4 layer, and the length of silk ribbon is within the scope of 0.5 ~ 1.5m; Peripheral speed >=the 160m/s of silk ribbon outer rim, and upwards flue gas flow rate≤15m/s, downward slurries spray flow velocity≤15m/s; Can select according to the size of desulfurizing tower and space etc.; Strengthening the coming into operation of disturbance mass-transfer zone, can according to the coming into operation of spraying layer, boiler load, desulfuration efficiency situation up to standard carries out multilayer or individual layer comes into operation, lower floor's effect is slightly better than upper strata.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a boiler flue gas desulfurization strengthening disturbance mass transfer apparatus, it is characterized in that: comprise and be installed on fixed hook (1) under boiler flue desulfuring towers spraying layer brace summer and motor (2), described fixed hook (1) is arranged at motor (2) top, the output shaft of described motor (2) bottom is turning cylinder (3), turning cylinder (3) afterbody is provided with drive plate (4), described drive plate (4) is fixed with nail silk disk (5), the outer rim of nail silk disk (5) is provided with some silk ribbons (6).
2. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, is characterized in that: described motor (2) is heatproof, the low voltage, high-speed motor of corrosion-resistant, waterproof, small-power type.
3. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, it is characterized in that: described turning cylinder (3) is furnished with 1 layer or Multi-layer transmission dish (4), every layer of drive plate (4) is provided with nail silk disk (5) and silk ribbon (6).
4. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, it is characterized in that: described boiler flue gas desulfurization strengthening disturbance mass transfer apparatus is multiple, be evenly arranged and be installed on strengthening disturbance in desulfurizing tower and arrange district, described strengthening disturbance arrange district be positioned at desulfurizing tower spraying layer below.
5. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, is characterized in that: described fixed hook (1) by glass cord and high temperature resistant alicyclic vinyl glass flake plasticine flexible suspension on spraying layer brace summer.
6. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, is characterized in that: described silk ribbon (6) is arranged on nail silk disk (5) by screw fastening.
7. boiler flue gas desulfurization strengthening disturbance mass transfer apparatus as claimed in claim 1, is characterized in that: the material of described silk ribbon (6) is that the nylon of Centrifugal cord type lawn-mower is beaten the grass rope.
8. put forward efficacious prescriptions method based on the boiler flue gas desulfurization strengthening disturbance mass transfer of the arbitrary described device of claim 1-7 for one kind, it is characterized in that: this device is installed on boiler desulfurization tower spraying layer bottom, at slurries spray with in flue gas adverse current mixed zone, through the motor (2) that multiple stage level is uniform, motor (2) drives turning cylinder (3) to rotate, drive 1 layer or the disturbance of multilayer silk ribbon (6) generation high speed, now due to the decrease speed of slurries, the rate of climb of flue gas is all less than the rotation disturbance speed of silk ribbon (6), therefore the liquid in space, gas will be forced to be uniformly mixed, larger desulfurizing agent drop is torn fragmentation by silk ribbon, thus SO in desulfurizing agent drop and flue gas is enhanced
2mass transfer and disturbance mixing, thus reach and promote effect of desulfuration efficiency.
9. boiler flue gas desulfurization strengthening disturbance mass transfer as claimed in claim 8 puies forward efficacious prescriptions method, it is characterized in that: the voltage of described motor (2) is 12V or 24V; Motor power line is drawn after outside desulfurizing tower, concentrates to carry out joining and powers and control the quantity that puts into operation; The separate unit power of motor is less than 100W.
10. boiler flue gas desulfurization strengthening disturbance mass transfer as claimed in claim 8 puies forward efficacious prescriptions method, it is characterized in that: the number of plies of described silk ribbon (6) is 1 ~ 4 layer, and the length of silk ribbon is within the scope of 0.5 ~ 1.5m; Peripheral speed >=the 160m/s of silk ribbon outer rim, and upwards flue gas flow rate≤15m/s, downward slurries spray flow velocity≤15m/s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072595.0A CN105536496A (en) | 2016-02-02 | 2016-02-02 | Intensified disturbance mass transferring device and method for desulfurization of boiler flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072595.0A CN105536496A (en) | 2016-02-02 | 2016-02-02 | Intensified disturbance mass transferring device and method for desulfurization of boiler flue gas |
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| CN105536496A true CN105536496A (en) | 2016-05-04 |
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ID=55816342
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| CN201610072595.0A Pending CN105536496A (en) | 2016-02-02 | 2016-02-02 | Intensified disturbance mass transferring device and method for desulfurization of boiler flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465324A (en) * | 2018-03-30 | 2018-08-31 | 朱茂祖 | A kind of metallurgical factory's emission-control equipment |
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|---|---|---|---|---|
| CN203002194U (en) * | 2012-08-23 | 2013-06-19 | 北京威肯众合环保科技有限公司 | Turbulent ball turbocharged composite desulphurization dedusting tower |
| CN104436939A (en) * | 2014-11-18 | 2015-03-25 | 赵龙 | Liquid flinging device |
| CN205412657U (en) * | 2016-02-02 | 2016-08-03 | 江苏宁绿节能环保有限公司 | Boiler flue gas desulfurization reinforces disturbance mass transfer device |
-
2016
- 2016-02-02 CN CN201610072595.0A patent/CN105536496A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203002194U (en) * | 2012-08-23 | 2013-06-19 | 北京威肯众合环保科技有限公司 | Turbulent ball turbocharged composite desulphurization dedusting tower |
| CN104436939A (en) * | 2014-11-18 | 2015-03-25 | 赵龙 | Liquid flinging device |
| CN205412657U (en) * | 2016-02-02 | 2016-08-03 | 江苏宁绿节能环保有限公司 | Boiler flue gas desulfurization reinforces disturbance mass transfer device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465324A (en) * | 2018-03-30 | 2018-08-31 | 朱茂祖 | A kind of metallurgical factory's emission-control equipment |
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Application publication date: 20160504 |