CN105749732A - Secondary gas-liquid flow equilibrating device of square-box type desulfurizing tower - Google Patents
Secondary gas-liquid flow equilibrating device of square-box type desulfurizing tower Download PDFInfo
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- CN105749732A CN105749732A CN201610176938.8A CN201610176938A CN105749732A CN 105749732 A CN105749732 A CN 105749732A CN 201610176938 A CN201610176938 A CN 201610176938A CN 105749732 A CN105749732 A CN 105749732A
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- desulfurizing tower
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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
- B01D53/502—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 solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a secondary gas-liquid flow equilibrating device of a square-box type desulfurizing tower. The secondary gas-liquid flow equilibrating device comprises a plurality of gas-liquid flow equilibrating plate modules which are horizontally arranged along the cross section of the desulfurizing tower and are connected into a whole, wherein each gas-liquid flow equilibrating plate module comprises a plurality of steel plates longitudinally arranged in parallel, each steel plate is a straight plate, and the steel plates are arranged equidistantly; triangular dustproof plates are arranged in the connection positions of the gas-liquid flow equilibrating plate modules. In the secondary gas-liquid flow equilibrating device, gas flow performs rotary disturbance, gas and liquids are more sufficiently contacted, the desulfurizing reaction area is increased, meanwhile, smoke and gypsum slurry in the gas and liquids are removed, and the dust removal purpose is achieved.
Description
Technical field
The present invention relates to a kind of two grades of gas-liquid current equalizers of square chest type desulfurizing tower.
Background technology
Along with China's economic development, electricity needs continues to increase, haze long lasting effect, controls PM2.5 and refer to agenda.Local government, electric power enterprise propose one after another " minimum discharge ", " near-zero release ", " reaching combustion engine discharge standard " construction or transformation requirement." minimum discharge " technology, scientific guidance Thermal Power Generation Industry sustainable development ultra-clean is discharged.
State Development and Reform Commission prints and distributes " coal electricity energy-saving and emission-reduction upgrading and transformation action plan (2014-2020) " Air Pollutant Emission of keeping under strict control.Newly-built Thermal generation unit (is contained in and builds the unit having included country's construction of fire and electricity planning with project in) answers synchronized construction advanced person's high-efficiency desulfurization, denitration and dust removal installation, must not arrange gas bypass passage.Eastern region (11 provinces and cities such as Liaoning, Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang, Fujian, Guangdong, Hainan) newly-built Thermal generation unit Air Pollutant Emission concentration basically reaches gas turbine group emission limit (namely under benchmark oxygen content 6% condition, flue dust, sulfur dioxide, discharged nitrous oxides concentration are respectively no higher than 10,35,50 milligrams/cubic metre).Middle part (8 provinces such as Heilungkiang, Jilin, Shanxi, Anhui, Hubei, Hunan, Henan, Jiangxi) new-built unit is in principle close to or up gas turbine group emission limit.Encourage west area new-built unit close to or up gas turbine group emission limit, support that the elimination of atmosphere pollution combination and cooperation is carried out in synchronization, reduce the pollutant emissions such as sulfur trioxide, hydrargyrum, arsenic.In tradition flue gas desulphurization system, desulfurization discharge efficiency is less than 95%, desulfurization outlet drain is that flue dust, sulfur dioxide emissioning concentration are respectively greater than 20,100 milligrams/cubic metre, but without reaching minimum discharge requirement (flue dust, sulfur dioxide emissioning concentration are respectively no higher than 10,35 milligrams/cubic metre).Existing apparatus is at desulfurization entrance SO2Concentration 3420mg/Nm3Time, desulfurization entrance dust concentration is 24mg/Nm3Time, desulfurization outlet SO2Concentration is 180mg/Nm3, outlet dust concentration is 20mg/Nm3, desulfuration efficiency is 95%, and desulfurizer exiting flue gas amount is 246200Nm3/h.Existing desulfurization equipment cannot meet minimum discharge outlet sulfur dioxide (SO2) < 20mg/Nm3, outlet dust concentration be 5mg/Nm3Emission request, namely existing desulphurization system can not meet minimum discharge operation emission request, therefore need to generator set desulfurization reaction unit be transformed.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide a kind of two grades of gas-liquid current equalizers of square chest type desulfurizing tower.
It is an object of the invention to be achieved through the following technical solutions:
A kind of two grades of gas-liquid current equalizers of square chest type desulfurizing tower, described square chest type desulfurizing tower includes: gas approach, and it is arranged on the middle lower section of desulfurizing tower side；Exhanst gas outlet, it is arranged on the top of desulfurizing tower side；Slurry tank, it is arranged on the internal bottom side of desulfurizing tower, is positioned at the lower section of described gas approach；Spray portion, it is arranged on inside desulfurizing tower, is positioned at the top of described gas approach, and described spray portion is provided with 5 spraying layers, and each spraying layer is equipped with several nozzles；Two grades of gas-liquid current equalizers, including two gas-liquid current equalizers, it is respectively along desulfurizing tower cross sectional arrangement, and is arranged between gas approach and third layer spraying layer and the 4th layer of spraying layer, including:
Several gas-liquid homogenizing plate modules, it is all along desulfurizing tower cross section tiled arrangements and connect into entirety, and each gas-liquid homogenizing plate module forms by the steel plate of several parallel longitudinal arrangements, and described steel plate is straight plate, and described steel plate equidistant placement；The junction of described gas-liquid homogenizing plate module is provided with the anti-hawk of triangle.
Further, each gas-liquid homogenizing plate module is all long is 680mm for 3991mm, width, high 300mm.
Further, the spacing between described steel plate is 57mm.
Further, described two grades of gas-liquid current equalizers are made up of 2205 rustless steels.
Further, described steel plate thickness is 3～6mm.
Further, described steel plate thickness is 3mm.
Further, it is fixed on I-beam bottom the anti-hawk of described triangle.
Further, four angles of described gas-liquid current equalizer are separately fixed on the pillar of desulfurizing tower.
Further, it is provided with I-beam bottom described gas-liquid current equalizer and the intersection of desulfurizing tower surrounding wallboard.
Further, it is provided with the anti-hawk of triangle every the junction of 1,2,3 or 4 gas-liquid homogenizing plate modules.
The invention have the benefit that
Two grades of gas-liquid current equalizers of square chest type desulfurizing tower of the present invention, make entrance desulfurizing tower flue gas flow distribution more uniform, are more uniformly distributed improving gas-to-liquid contact, can guarantee that at desulfurization entrance SO2Concentration is 3420mg/Nm3Time, desulfurization entrance dust concentration is 24mg/Nm3Time, reach desulfuration efficiency and be not less than 99% and desulfurization outlet SO2Concentration is not more than 20mg/Nm3, outlet dust concentration is 5mg/Nm3Emission request, optimizes design, reduces cost, serves energy saving and cost lowering potentiation, has great economic implications.
Two grades of gas-liquid current equalizers of desulfurizing tower of the present invention are when in desulfurizing tower, gas-liquid is passed through, violent disturbance mixing is produced in device, gas-liquid can be made on device top to form superposed layer, thus increasing gas-to-liquid contact surface area, extend the serosity time of staying and response time, make flue gas and slurry liquid contacts surface more abundant, so that desulfuration efficiency obtains raising 4%～5%.
The disturbance that in two grades of gas-liquid current equalizers of desulfurizing tower of the present invention, air-flow rotates, makes gas-liquid more be fully contacted increase desulphurization reaction area, the flue dust in gas-liquid and gypsum slurries is removed simultaneously, reach dedusting purpose.
The advantage such as two grades of gas-liquid current equalizers of desulfurizing tower of the present invention have desulfuration efficiency height, energy consumption is low, resistance is little (resistance only has 150Pa), simple in construction, maintenance are easy to maintenance, it is adaptable to the newly-built desulfurizing item of the middle and high sulfur coal that burns and desulfurization renovation and improving project.Described two grades of gas-liquid current equalizers make flue gas flow field distribution more uniform, unbiased flow short-circuit dead band, and resistance is low, make flue gas flow field distribution more uniform, and without bias current, resistance is low, alleviates the abrasion of upstream device, extends service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the desulfurizing tower being provided with two grades of gas-liquid current equalizers of the present invention；
Fig. 2 is the structural representation of gas-liquid current equalizer of the present invention；
Fig. 3 is the sectional drawing in 1-1 face in Fig. 2；
Fig. 4 is the sectional drawing in 2-2 face in Fig. 2；
Fig. 5 is the structural representation of gas-liquid homogenizing plate module junction of the present invention；
Fig. 6 is gas-liquid homogenizing plate module sectional drawing of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
A kind of two grades of gas-liquid current equalizers of square chest type desulfurizing tower, as it is shown in figure 1, described square chest type desulfurizing tower includes: gas approach, it is arranged on the middle lower section of desulfurizing tower side；Exhanst gas outlet, it is arranged on the top of desulfurizing tower side；Slurry tank, it is arranged on the internal bottom side of desulfurizing tower, is positioned at the lower section of described gas approach；Spray portion, it is arranged on inside desulfurizing tower, is positioned at the top of described gas approach, and described spray portion is provided with 5 spraying layers, and each spraying layer is equipped with several nozzles；Two grades of gas-liquid current equalizers, including two gas-liquid current equalizers, it is respectively along desulfurizing tower cross sectional arrangement, and is arranged between gas approach and ground floor spraying layer and between third layer spraying layer and the 4th layer of spraying layer, as in figure 2 it is shown, include:
Several gas-liquid homogenizing plate modules, it is all along desulfurizing tower cross section tiled arrangements and connect into entirety, as shown in Figure 6, each gas-liquid homogenizing plate module forms by the steel plate of several parallel longitudinal arrangements, described steel plate is straight plate, described steel plate equidistant placement, is respectively provided with the spacing of 57mm between, and described steel plate thickness is 3mm.As shown in Figures 3 and 4, the junction of described gas-liquid homogenizing plate module is provided with the anti-hawk of triangle, it is fixed on I-beam bottom the anti-hawk of described triangle, concrete, it is provided with the anti-hawk of triangle every the junction of 1,2,3 or 4 gas-liquid homogenizing plate modules, when the junction of described gas-liquid homogenizing plate module is not provided with the anti-hawk of triangle, the spacing between described gas-liquid homogenizing plate module is 40mm.It is provided with I-beam bottom described gas-liquid current equalizer and the intersection of desulfurizing tower surrounding wallboard, there is between described gas-liquid current equalizer and desulfurizing tower surrounding wallboard the spacing of 20mm.Four angles of described gas-liquid current equalizer are separately fixed on the pillar of desulfurizing tower.
Wherein, each gas-liquid homogenizing plate module is all long is 680mm for 3991mm, width, high 300mm.
Described two grades of gas-liquid current equalizers are made up of 2205 rustless steels.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. two grades of gas-liquid current equalizers of square chest type desulfurizing tower, described square chest type desulfurizing tower includes: gas approach, and it is arranged on the middle lower section of desulfurizing tower side；Exhanst gas outlet, it is arranged on the top of desulfurizing tower side；Slurry tank, it is arranged on the internal bottom side of desulfurizing tower, is positioned at the lower section of described gas approach；Spray portion, it is arranged on inside desulfurizing tower, is positioned at the top of described gas approach, and described spray portion is provided with 5 spraying layers, and each spraying layer is equipped with several nozzles；Two grades of gas-liquid current equalizers, including two gas-liquid current equalizers, it is respectively along desulfurizing tower cross sectional arrangement, and is arranged between gas approach and ground floor spraying layer and between third layer spraying layer and the 4th layer of spraying layer, it is characterised in that including:
Several gas-liquid homogenizing plate modules, it is all along desulfurizing tower cross section tiled arrangements and connect into entirety, and each gas-liquid homogenizing plate module forms by the steel plate of several parallel longitudinal arrangements, and described steel plate is straight plate, and described steel plate equidistant placement；The junction of described gas-liquid homogenizing plate module is provided with the anti-hawk of triangle.
2. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that each gas-liquid homogenizing plate module is all long is 680mm for 3991mm, width, high 300mm.
3. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that the spacing between described steel plate is 57mm.
4. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that described two grades of gas-liquid current equalizers are made up of 2205 rustless steels.
5. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that described steel plate thickness is 3～6mm.
6. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 5, it is characterised in that described steel plate thickness is 3mm.
7. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that be fixed on I-beam bottom the anti-hawk of described triangle.
8. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that four angles of described gas-liquid current equalizer are separately fixed on the pillar of desulfurizing tower.
9. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that be provided with I-beam bottom described gas-liquid current equalizer and the intersection of desulfurizing tower surrounding wallboard.
10. two grades of gas-liquid current equalizers of square chest type desulfurizing tower according to claim 1, it is characterised in that be provided with the anti-hawk of triangle every the junction of 1,2,3 or 4 gas-liquid homogenizing plate modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176938.8A CN105749732B (en) | 2016-03-24 | 2016-03-24 | A kind of square chest type desulfurizing tower second level gas-liquid current equalizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610176938.8A CN105749732B (en) | 2016-03-24 | 2016-03-24 | A kind of square chest type desulfurizing tower second level gas-liquid current equalizer |
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| CN105749732A true CN105749732A (en) | 2016-07-13 |
| CN105749732B CN105749732B (en) | 2019-04-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201618515U (en) * | 2010-02-04 | 2010-11-03 | 安徽省元琛环保科技有限公司 | Desulfurizing tower |
| CN203564963U (en) * | 2013-10-25 | 2014-04-30 | 福建鑫泽环保设备工程有限公司 | Flue gas denitration airflow uniform-distribution device |
| CN204233970U (en) * | 2014-10-30 | 2015-04-01 | 江苏苏境电力科技有限责任公司 | The board-like airflow uniform distribution device of a kind of flue gas desulfurization demister |
| CN204601990U (en) * | 2015-05-18 | 2015-09-02 | 武汉凯迪电力环保有限公司 | A kind of dust-removing desulfurating apparatus |
| CA2939524A1 (en) * | 2014-04-15 | 2015-10-22 | Ihi Corporation | Desulfurization apparatus and exhaust gas processing system using the same |
| WO2015187778A1 (en) * | 2014-06-04 | 2015-12-10 | Solvay Sa | Stabilization of at least one heavy metal contained in a sodic fly ash using a water-soluble source of silicate and a material containing calcium and/or magnesium |
| US9227157B2 (en) * | 2010-07-12 | 2016-01-05 | Gea Process Engineering A/S | Spray dryer absorption apparatus with flat-bottomed chamber |
-
2016
- 2016-03-24 CN CN201610176938.8A patent/CN105749732B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201618515U (en) * | 2010-02-04 | 2010-11-03 | 安徽省元琛环保科技有限公司 | Desulfurizing tower |
| US9227157B2 (en) * | 2010-07-12 | 2016-01-05 | Gea Process Engineering A/S | Spray dryer absorption apparatus with flat-bottomed chamber |
| CN203564963U (en) * | 2013-10-25 | 2014-04-30 | 福建鑫泽环保设备工程有限公司 | Flue gas denitration airflow uniform-distribution device |
| CA2939524A1 (en) * | 2014-04-15 | 2015-10-22 | Ihi Corporation | Desulfurization apparatus and exhaust gas processing system using the same |
| WO2015187778A1 (en) * | 2014-06-04 | 2015-12-10 | Solvay Sa | Stabilization of at least one heavy metal contained in a sodic fly ash using a water-soluble source of silicate and a material containing calcium and/or magnesium |
| CN204233970U (en) * | 2014-10-30 | 2015-04-01 | 江苏苏境电力科技有限责任公司 | The board-like airflow uniform distribution device of a kind of flue gas desulfurization demister |
| CN204601990U (en) * | 2015-05-18 | 2015-09-02 | 武汉凯迪电力环保有限公司 | A kind of dust-removing desulfurating apparatus |
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| CN105749732B (en) | 2019-04-30 |
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Inventor after: Liu Yuxin Inventor after: Liu Chang Inventor after: Wu Guojun Inventor after: Li Chunyu Inventor after: Xia Shuang Inventor after: Li Yehong Inventor before: Liu Yuxin Inventor before: Liu Chang Inventor before: Wu Guojun Inventor before: Lu Shengkuan Inventor before: Peng Daijun |
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