CN102698550A - Combined foam and packing furnace gas purification tower - Google Patents
Combined foam and packing furnace gas purification tower Download PDFInfo
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- CN102698550A CN102698550A CN201210051562XA CN201210051562A CN102698550A CN 102698550 A CN102698550 A CN 102698550A CN 201210051562X A CN201210051562X A CN 201210051562XA CN 201210051562 A CN201210051562 A CN 201210051562A CN 102698550 A CN102698550 A CN 102698550A
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Abstract
The invention relates to a combined efficient foam and packing tower for purifying acid manufacturing furnace gas, in particular to a device for purifying furnace gas during process of industrial sulphuric acid production. The combined foam and packing furnace gas purification tower is characterized in that traditional packing towers and foaming towers are combined, technical reconstruction is performed inside the purification tower, and original two-stage purification is performed in the same tower, so that the problems that the system resistance of the purification process is large during the process of industrial sulphuric acid production, the dedusting efficiency is low, and the purification effect is ordinary are solved. In addition, the purification tower has the advantages that the production process is simplified, the structure is simple, the system resistance can be reduced effectively, the dedusting and defogging efficiency is high, and the purification effect is good. The purification tower is reconstructed on a using site of an original device, so that space of the device is economized, and available space is provided for other technical reconstructions for the production process. Besides, each tower is provided with a hole, tower plates can be demounted separately, and accordingly the purification tower is convenient to maintain, working efficiency is improved, investment is small, and operation cost is low.
Description
Technical field
The present invention relates to foam-filler one tower that a kind of combination high-efficiency purifies the relieving haperacidity furnace gas, in particular for a kind of equipment that in the industrial sulphuric acid production process furnace gas is purified.
Background technology
Sulfuric acid industry is produced in cleaning procedure, is divided into two big types of wet method and dry method substantially, and wet method obtains widespread usage at present.In the furnace gas wet cleaning, equipment commonly used has void tower, packed tower, foaming tower, Venturi scrubber, electrostatic precipitator etc.Various device forms multiple process for purifying through the different combinations mode.Generally speaking, process for purifying adds upper level by two-stage washing or the two-stage demist is formed.
China's sulfuric acid industry adopts void tower or packed tower to add foaming tower composition two-step purification mostly at present.The two-step purification principle is: the furnace gas behind electric precipitation, dustiness drops to 0.2g/m
3Below, temperature is 300～320 ℃, gets into void tower or packed tower, from bottom to top by the cooling of 10%～20% diluted acid under spray washing.Furnace gas is lowered the temperature because of humidity increases through behind this tower, produces acid mist simultaneously, gets into foaming tower again.At the foaming tower froth zone, gas-liquid fully contacts, and the submicron in the furnace gas is by effective elimination, and furnace gas temperature drops to 40～30 ℃, and the furnace gas water content further improves, and acid fog liquid grain particle diameter increases, acid content reduces.
Void tower is the same basically with the packed tower effect, is characterized in that stable operation, adaptability are strong, and generally between 60%～75%, demist efficient is below 14%～50% for efficiency of dust collection, but equipment investment is higher, and the tower volume is big, and packed tower changes that filler is time-consuming takes a lot of work.Foaming tower is often made second tower of furnace gas washing, and this equipment has the purification efficiency height, and stability is strong with adaptability, and cooling and arsenic removal, fluorine effect are better than packed tower, but also have complex structure, and overhaul of the equipments is difficult, problems such as column plate easy deformation.
China's sulfuric acid industry cleaning procedure still exists SR big at present in general, and efficiency of dust collection is low, and clean-up effect is general, the maintenance of equipment difficulty, and equipment investment is big, volume is big, shortcomings such as operating cost height.Chinese patent CN1207952A discloses a kind of novel combined packed tower, mainly by filler A, and filler B, liquid distribution trough; Filler pressing, filler bracing ring etc. are partly formed, though have certain adaptability and higher mass-transfer efficiency, mine dust is deposited in packing layer easily in practice; Clean very inconvenience, and will often change filler in using, make troubles for the operation and the maintenance of equipment, increased the operating cost of equipment; Therefore, in order to adapt to the needs of environmental requirement and production technology, improve relieving haperacidity flue gas cleaning efficient; Reduce the cleaning system resistance, save equipment investment, save the device space; Down time is shortened in convenient maintenance, need be optimized transformation to the two-stage washing.
Summary of the invention
The present invention provides a kind of combined type foam-filler integrated furnace gas purifying column; It is big to have solved in the industrial sulphuric acid production process flue gas cleaning working procedure systems resistance, and efficiency of dust collection is low, and clean-up effect is general; And equipment investment is big, it is big to take up room, maintenance difficulty, the problem that operating cost is high.
The integrated furnace gas purifying column of foam-filler of the present invention comprises tower body, packed tower, foaming tower; The tower body bottom has furnace gas inlet and cleaning solution outlet, and the top has furnace gas export, and tower body top is provided with liquid distribution trough; Vertical pile is inner at tower body from top to bottom successively for packed tower and foaming tower; Tower body top can be provided with 1 packed tower, and the packed tower below is provided with 3 foaming towers, and foaming tower is made up of sieve tray and column plate bracing frame; Be provided with overflow ducts between the foaming tower, all have the manhole that convenient for maintaining or attendant get on each packed tower and the foaming tower.
The present invention unites two into one traditional packed tower and foaming tower and combines, and tower inside is undergone technological transformation, and is placed on original two-step purification in the same tower and accomplishes; Simplified production technology, simple in structure, can effectively reduce SR; Dedusting, demist efficient height, good purification; Because the present invention transforms on original equipment land used, the equipment of having saved takes up an area of the space, for the other technologies transformation of production technology provides free space; And on each body of the tower, have manhole, column plate can the piecemeal dismounting, maintains easily; Save maintenance time; Improved operating efficiency, possessed small investment, the advantage that operating cost is low.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein 1---tower body; 2---packed tower; 3,4,5---foaming tower; 6---liquid distribution trough; 7---Haier's ring filler; 8---screen; 9---the filler bracing frame; 10,12,14---sieve tray; 11,13,15---the column plate bracing frame; 16---overflow ducts; 17---the furnace gas inlet; 18---furnace gas export; 19---the cleaning solution outlet; 20,21,22,23,24,25---manhole
The specific embodiment
As shown in Figure 1, the integrated furnace gas purifying column of foam-filler of the present invention comprises tower body 1, packed tower, foaming tower, and the tower body bottom has furnace gas inlet 17 and cleaning solution outlet 19; The top has furnace gas export 18, and tower body top is provided with liquid distribution trough 6, and vertical pile is inner at tower body from top to bottom successively for packed tower and foaming tower; Tower body is a cylindrical housings; Material adopts fiberglass, and the column plate bracing frame is divided into level Four with cylindrical tower body, and three grades of the tower lower part is that froth zone is made up of sieve plate foaming tower 3,4,5; The one-level on top is the packed tower 2 of packing area; Liquid distribution trough 6 sprinkling washing liquid that have multi-port are arranged above packed tower 2, be placed with Haier's ring filler 7 in the packed tower, the bottom is equipped with screen 8 and filler bracing frame 9; The packed tower below is provided with three foaming towers 3,4,5; Foaming tower is made up of sieve tray and column plate bracing frame; Constitute three grades of foaming towers together through overflow ducts 16 between the foaming tower, all have on each packed tower and the foaming tower as the manhole of safeguarding or maintenance is used.
Operation principle of the present invention is: move from bottom to top in the 17 entering towers that enter the mouth through the furnace gas behind the electric precipitation, cleaning solution adopts diluted acid, evenly gets in the tower, with the furnace gas counter current contacting from cleaning solution through liquid distribution trough 6; Furnace gas successively contacts with cleaning solution through three grades of foaming towers 3,4,5; Be provided with overflow ducts 16 between the foaming tower, make every grade of foaming tower liquid layer remain on 30-50mm, form the froth zone of turbulence; Along with the bubble in foaming tower constantly breaks, in the merging process; Furnace gas forces contact with a large amount of liquid films that absorb, and mine dust is wherein then adhered to by liquid film, and compositions such as arsenic, seleno oxide, fluoride are then absorbed by a large amount of liquid films surface; Furnace gas after foaming tower is handled gets into packed tower again; Cleaning solution in the packed tower flows on Haier's ring filler 7 surfaces and moves downward the formation liquid film, and furnace gas then flows in the slit of Haier's ring filler 7 from bottom to top, and the gas-liquid two-phase counter current contacting realizes mass transfer; Furnace gas obtains further humidifying cooling; Remove the part acid mist and the particle diameter of acid mist is increased, cleaning solution flows at the bottom of the tower at last, by cleaning solution outlet 19 cleaning solution is delivered to and is returned recycle in the tower after inclined tube settler is handled.
Claims (4)
1. integrated furnace gas purifying column of foam-filler; Comprise tower body (1), packed tower (2), foaming tower; The tower body bottom has furnace gas inlet (17) and cleaning solution outlet (19); The top has furnace gas export (18), and tower body top is provided with liquid distribution trough (6), it is characterized in that: vertical pile is inner at tower body from top to bottom successively for packed tower and foaming tower.
2. flue gas cleaning tower according to claim 1 is characterized in that: tower body (1) top is provided with 1 packed tower (2), and the packed tower below is provided with 3 foaming towers (3,4,5).
3. flue gas cleaning tower according to claim 2 is characterized in that: said foaming tower is made up of sieve tray and column plate bracing frame, is provided with overflow ducts (16) between the foaming tower.
4. according to the arbitrary described flue gas cleaning tower of claim 1-3, it is characterized in that: all have manhole on each packed tower and the foaming tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051562XA CN102698550A (en) | 2012-03-01 | 2012-03-01 | Combined foam and packing furnace gas purification tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051562XA CN102698550A (en) | 2012-03-01 | 2012-03-01 | Combined foam and packing furnace gas purification tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102698550A true CN102698550A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210051562XA Pending CN102698550A (en) | 2012-03-01 | 2012-03-01 | Combined foam and packing furnace gas purification tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691258A (en) * | 2013-04-10 | 2014-04-02 | 苏州市三敏环境工程有限公司 | Water washing tower |
| CN104030254A (en) * | 2014-06-12 | 2014-09-10 | 白银有色集团股份有限公司 | Fluorine-chlorine removal and recovery device in copper smelting smoke acid making system and recovery method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207952A (en) * | 1998-06-27 | 1999-02-17 | 蓝仁水 | Composite filler tower |
| CN202446971U (en) * | 2012-03-01 | 2012-09-26 | 南丹县吉朗铟业有限公司 | Foam-filler integrated burner gas purification tower |
| CN102755823A (en) * | 2012-08-10 | 2012-10-31 | 江山市泰格化工有限公司 | Method for desulfurizing high-sulphur boiler flue gas to prepare high-purity ammonium bisulfite |
-
2012
- 2012-03-01 CN CN201210051562XA patent/CN102698550A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207952A (en) * | 1998-06-27 | 1999-02-17 | 蓝仁水 | Composite filler tower |
| CN202446971U (en) * | 2012-03-01 | 2012-09-26 | 南丹县吉朗铟业有限公司 | Foam-filler integrated burner gas purification tower |
| CN102755823A (en) * | 2012-08-10 | 2012-10-31 | 江山市泰格化工有限公司 | Method for desulfurizing high-sulphur boiler flue gas to prepare high-purity ammonium bisulfite |
Non-Patent Citations (2)
| Title |
|---|
| 叶树滋: "《硫酸生产工艺》", 30 November 2011 * |
| 叶树滋: "60kt/a硫铁矿制酸装置扩建改造的设计特点", 《硫酸工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691258A (en) * | 2013-04-10 | 2014-04-02 | 苏州市三敏环境工程有限公司 | Water washing tower |
| CN104030254A (en) * | 2014-06-12 | 2014-09-10 | 白银有色集团股份有限公司 | Fluorine-chlorine removal and recovery device in copper smelting smoke acid making system and recovery method thereof |
| CN104030254B (en) * | 2014-06-12 | 2016-02-24 | 白银有色集团股份有限公司 | In copper blast furnace off-gas acid making system, fluorine chlorine removes retrieving arrangement and recovery method thereof |
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Application publication date: 20121003 |