CN2601124Y - Enclosed combustion gas purifying system of calcium carbide furnace - Google Patents
Enclosed combustion gas purifying system of calcium carbide furnace Download PDFInfo
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- CN2601124Y CN2601124Y CN 03258869 CN03258869U CN2601124Y CN 2601124 Y CN2601124 Y CN 2601124Y CN 03258869 CN03258869 CN 03258869 CN 03258869 U CN03258869 U CN 03258869U CN 2601124 Y CN2601124 Y CN 2601124Y
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- calcium carbide
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Abstract
The utility model relates to a hermetical calcium carbide furnace gas purification system that adopts a wet purification system. The system is characterized in that the wet purification system follow the direction of the furnace gas to arrange in series a furnace gas cleaning machine with a strike-off board, a course cleaning Tower I and Tower II and refined cleaning Tower III; wherein, the lower part of the Tower I is the reverse flow section and the upper part is the turbulent ball section; the Tower II is a transitional washing tower for the furnace gas to pass from the course cleaning to the refined cleaning; the Tower II is a refined cleaning tower; the water flow and the furnace gas form a reversed flow course; the water outlet of the gas washing machine is provided with a swirling liquid separator; and the upper clear liquid in the swirling liquid separator is send back to the reverse flow section in the Tower I. The utility model can effectively overcome the problems of fouling and blockage and cab conduct the high-efficient dust removal to the calcium carbide furnace gas.
Description
Technical field:
The utility model relates to the purification to calcium carbide burner gas.
Background technology:
The composition of calcium carbide furnace gas is roughly: CO:70-80%, H
2: 3-8%, CO
2: 3-10%, N
2: 5-15%, O
2: less than 2%.Dustiness is higher in the calcium carbide burner gas, is generally 100-150g/m
3The gases of supervening in the calcium carbide smelting process such as CO, generally about 650 ℃, when furnace of calcium carbide was undesired, gas temperature will reach more than 800 ℃ temperature, remove this, also contain easily fouling impurity such as tar and CaO in the calcium carbide burner gas, based on these two kinds of factors, calcium carbide furnace gas is difficult to purify for a long time, manufacturing enterprise is the air burning discharging always, make a large amount of dust and remaining CO enter atmosphere on the one hand, major polluting atmosphere environment also causes the waste of the energy on the other hand.
2002, China's calcium carbide output was 4,250,000 tons, more than 500 of national furnace of calcium carbide, and wherein closed calcium carbide furnace is more than 30.These enclosed calcium carbide furnace gas are the difficult problems of calcium carbide industry always.Present status in China is at present:
1, some furnace of calcium carbide producers adopt gas burning boiler dry technique, but because the equipment big, furnace of calcium carbide of China's calcium carbide industrial raw materials quality fluctuation is lower, the furnace of calcium carbide start-stop is more frequent, and the steam fluctuation that dry technique is produced is bigger, be difficult to effectively utilize, and investment is big.Remove this, because of the boiler internal combustion be high dust, the easy furnace gas of fouling, equipment is because of wearing and tearing, fouling, corrosion etc., need frequent parking maintenance, therefore, the utilization of capacity of dry method gas burning boiler is also very low, furnace gas reclaims not exclusively, and still can not solve the pollution problem to environment preferably.
2, the furnace gas of most of calcium carbide producer does not have purified treatment, directly emptying burning.
Summary of the invention:
Technical problem to be solved in the utility model is to avoid existing weak point in the above-mentioned prior art, provide a kind of and can effectively overcome bad phenomenon such as fouling, obstruction, and can be for a long time, the enclosed calcium carbide furnace gas system of stable, efficient, safe operation.
The technical scheme that the utility model technical solution problem is adopted is:
The utility model adopts system for wet purification.
Design feature of the present utility model is: described system for wet purification is by the trend of furnace gas connect successively the furnace gas gas cleaner that is provided with scraper plate, thick Xi Yita, two towers and fine purifiation three towers; Wherein, a tower Lower Half is the adverse current section, and the first half is rapid ball section, two towers be furnace gas from slightly washing the transition scrubbing tower of fine purifiation, three towers are the fine purifiation tower; Current and furnace gas form reverse flow process, and at gas cleaner delivery port place cyclone hydraulic separators are set, and the supernatant in the separator is recycled to the adverse current section of a described tower.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model is according to the characteristics that contain easy scale forming matter in the calcium carbide burner gas, adopt mechanical scraper-type gas cleaner, also can be by in each scrubbing tower, adopting the dust collection method of the multiple combinations such as disc type, rapid ball formula, structured packing formula that get wet, it is reasonable in design, the method novelty, guaranteed that the calcium carbide furnace gas system is long-term, stable, efficient, safe operation, not only solved environmental issue, and made resource obtain comprehensive utilization.Wherein, the gas cleaner efficiency of dust collection reaches 32-43%, and a tower efficiency of dust collection reaches 74%-78%, and two tower efficiency of dust collections reach 86%-90%, and three towers outlet efficiency of dust collection reaches 99.9%.
2, the utility model is by being provided with the gas cleaner of scraper plate below a tower, overcome the crux difficult problem of dedusting initial stage the easiest obstruction, fouling, around its wall, dirty thing and the dust stratification of doing wet interface place all continuously struck off by mechanical scraper plate, thereby make the calcium carbide furnace gas system can be for a long time, stable, efficiently, safe operation.
3, the sewage of the utility model washing back generation, except that a small amount of discharge needed further to handle, all the other washings recycled, and save great lot of water resources.
Fig. 1 is the utility model system schematic.
Fig. 2 is the utility model gas cleaner internal structure schematic diagram.
Fig. 3 is the utility model one tower internal structure schematic diagram.
Fig. 4 is a bowl-type nozzle structural representation in the utility model one tower counter-flow section.
Fig. 5 is the dish structural representation that gets wet in the utility model one tower counter-flow section.
Fig. 6 is the dish structural representation that gets wet in the utility model one tower rapids ball section.
Fig. 7 is the utility model three tower internal structure schematic diagrames.
Embodiment:
Referring to Fig. 1, present embodiment adopts system for wet purification, and this system for wet purification is by the trend of furnace gas connect successively the furnace gas gas cleaner 1 that is provided with scraper plate, thick Xi Yita, two towers and fine purifiation three towers; Wherein, a tower Lower Half is an adverse current section 2, and the first half is that rapid ball section 3, two towers are that furnace gas is a fine purifiation tower 5 from transition scrubbing tower 4, three towers of slightly washing fine purifiation; Current and furnace gas form reverse flow process, and at the delivery port place of gas cleaner 1 cyclone hydraulic separators 6 are set, and the supernatant in the separator 6 is recycled to the adverse current section 2 of a described tower.
Shown in Figure 1, a gas cleaner 1 and a tower are conjuncted structure, and gas cleaner 1 is positioned at the below of a tower, and its gas outlet directly is connected with tower inlet.
Referring to Fig. 2, the gas cleaner in the present embodiment adopts horizontal cylindrical casing 7, is provided with by motor-driven rotating shaft 8 on the axis of its cylinder, and the scraper plate 9 that is positioned on cylinder madial wall and the end face thereof is fixedly installed in the rotating shaft 8 by support 10; Air inlet 11 is positioned at an end of cylindrical casing 7, and gas outlet 12 is positioned at the other end, and collecting tank 13 is positioned at the below of cylindrical casing 7, and liquid outlet 14 is positioned at the bottom of collecting tank 13.In addition, at an end of cylindrical casing 7, also be respectively arranged with liquid level mouth 15 and explosionproof hole 16.
After dust-laden gas entered gas cleaner, flow velocity was lower, and the dust of larger particles falls into gas cleaner water because of the gravity of self.The scraper plate that is installed in the rotating shaft should symmetry be provided with, to keep balance.Scraper plate rotates with rotating shaft, and water in the gas cleaner is taken up the formation cascade, contacts with dusty gas, reaches the purpose to furnace gas cooling and dedusting just.Along with the rotation of scraper plate, dust on cylinder inboard wall and the both ends of the surface and fouling, particularly gas feed are done the fouling of wet junction and are struck off, and fall into the water.After the cooling of gas process gas cleaner, the dedusting, enter a tower.The dust that falls into the water is sent gas cleaner 1 with sewage through collecting tank 13, liquid outlet 14.
Referring to Fig. 3, in the present embodiment, be provided with one deck bowl-type nozzle 17 at least on the top of a tower counter-flow section 2 and be positioned at multilayer it under and get wet and coil 18.Wherein, the spout of bowl-type nozzle 17 is towards the top, and the spout periphery has bead.
Referring to Fig. 4, bowl-type nozzle 17 shapes such as bowl-shape, water flows out from the nozzle of center, and the bead of suitable its periphery falls, and forms the umbrella cascade.
Referring to Fig. 5, the every layer of dish 18 that gets wet constitutes with the drip tray 20 that is positioned at the water injection nozzle below by the water injection nozzle 19 of many delivery ports towards the below.Higher because of pressure of supply water, the flow of water is bigger, and the water that is sprayed by water injection nozzle 19 stops via drip tray 20, forms big and small water droplet, is covered with space in the tower.
Dusty gas enters from a tower bottom through gas cleaner 1, fully contacts with water droplet in adverse current section 2, falls into gas cleaner 1 with water after dust makes moist in the gas, and gas is further lowered the temperature.
Referring to Fig. 3 and Fig. 6, present embodiment is provided with the multilayer dish 18 that gets wet in the rapid ball section 3 of a tower, every layer get wet dish 18 by many delivery ports down water injection nozzle 19 and the drip tray 20 that is positioned at water injection nozzle 19 belows constitute, thereunder be table tennis packing layer 21.In concrete the enforcement, water injector should adopt the bigger nozzle in aperture, stops up water injection nozzle 19 to avoid dust to adhere to around nozzle.
Dusty gas continues to rise through adverse current section 2 backs, enters rapid ball section 3.Gas has certain pressure and flow velocity, and the table tennis in this section is ceaselessly moved, and gas and table tennis surface fully contacts, and makes the surface of less dust attached to ball, and the water that gets off with continuous spray together falls into the bottom of tower, plays the effect of further dedusting.
One tower of this version, its hypomere is a void tower except that the dish that gets wet is, though its epimere has filler, what use is table tennis, in light weight, resistance is little, smooth surface, surface area are bigger, therefore, puts in order that the tower resistance is less, efficiency of dust collection is high.
Referring to Fig. 7, three towers are that the tower body 24 by water storage tower still 22 and interior dress multi-layer ceramics structured packing 23 constitutes, and adjacent layer ceramic regulation stuffing hole and hole dislocation are arranged.
Dusty gas enters from tower body 24 bottom air inlets, through structured filling material layer 23, removes the fine particle dust, extracts out from cat head.Structured packing 23 is the porous aggregates with certain angle of inclination, each layer 10cm, and the dislocation in adjacent layer hole and hole can make gas not take a shortcut.After gas enters filler, flow along stuffing hole, dust is sprayed the water that gets off and is poured water storage tower still 22 attached on the filler wall, plays smart dedusting effect.
In the present embodiment, owing in three towers, use structured packing, its percent opening height, resistance drop is little, and surface area is big, the efficiency of dust collection height.
In addition, two towers in the present embodiment are transition scrubbing tower 2, are for the height that reduces a tower and three towers is provided with, so that fitting operation.Two towers are divided into bottom and top, and its underpart is the turbulent flow section identical with a tower first half, and its top is the fine wash sections identical with three towers.
Claims (7)
1, enclosed calcium carbide furnace gas system adopts system for wet purification, it is characterized in that described system for wet purification is by the trend of furnace gas connect successively the furnace gas gas cleaner (1) that is provided with scraper plate, thick Xi Yita, two towers and fine purifiation three towers; Wherein, a tower Lower Half is adverse current section (2), and the first half is a rapid ball section (3), two towers be furnace gas from slightly washing the transition scrubbing tower (4) of fine purifiation, three towers are fine purifiation tower (5); Current and furnace gas form reverse flow process, and at the delivery port place of gas cleaner (1) cyclone hydraulic separators (6) are set, and the supernatant in the cyclone hydraulic separators (6) is recycled to the adverse current section (2) of a described tower.
2, enclosed calcium carbide furnace gas according to claim 1 system is characterized in that a described gas cleaner (1) and a tower are conjuncted structure, and gas cleaner (1) is positioned at the below of a tower, and its gas outlet (12) directly enter the mouth with a tower and are connected.
3, enclosed calcium carbide furnace gas according to claim 2 system, it is characterized in that described gas cleaner (1) adopts horizontal cylindrical casing (7), be provided with by motor-driven rotating shaft (8) on the axis of its cylinder, being positioned at scraper plate (9) on cylinder madial wall and the end face thereof, that be used to strike off fouling is to be fixedly installed on rotating shaft (8) by support (10); Air inlet (11) is positioned at an end of cylindrical casing (7), and gas outlet (12) are positioned at the other end, and collecting tank (13) is positioned at the below of cylindrical casing (7), and liquid outlet (14) is positioned at the bottom of collecting tank (13).
4, enclosed calcium carbide furnace gas according to claim 1 system, it is characterized in that being provided with one deck bowl-type nozzle (17) at least and be positioned at multilayer under it dish (18) that gets wet on the top of the adverse current section (2) of a described tower, wherein, the spout of bowl-type nozzle (17) is towards the top, the spout periphery has bead, and the every layer of dish (18) that gets wet is made of towards the water injection nozzle (19) of below and the drip tray (20) that is positioned at water injection nozzle (19) below many delivery ports;
5, enclosed calcium carbide furnace gas according to claim 1 system, it is characterized in that in the rapid ball section (3) of a described tower, the multilayer dish (18) that gets wet is set, every layer get wet dish (18) by many delivery ports down water injection nozzle (19) and the drip tray (20) that is positioned at water injection nozzle (19) below constitute, be table tennis packing layer (21) in the below of the dish (18) that gets wet.
6, enclosed calcium carbide furnace gas according to claim 1 system is characterized in that described three towers are made of the tower body (24) of water storage tower still (22) and interior dress multi-layer ceramics structured packing (23), and adjacent layer ceramic regulation stuffing hole misplaces with the hole and arranges.
7, enclosed calcium carbide furnace gas according to claim 1 system is characterized in that described two tower transition scrubbing towers (4) are divided into bottom and top, and its underpart is the turbulent flow section identical with a tower first half, and its top is the fine wash sections identical with three towers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258869 CN2601124Y (en) | 2003-06-13 | 2003-06-13 | Enclosed combustion gas purifying system of calcium carbide furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03258869 CN2601124Y (en) | 2003-06-13 | 2003-06-13 | Enclosed combustion gas purifying system of calcium carbide furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2601124Y true CN2601124Y (en) | 2004-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03258869 Expired - Fee Related CN2601124Y (en) | 2003-06-13 | 2003-06-13 | Enclosed combustion gas purifying system of calcium carbide furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2601124Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427390C (en) * | 2006-02-24 | 2008-10-22 | 昆明理工大学 | Method of purifying furnace gas of closed calcium carbide furnace |
| CN103182232A (en) * | 2013-03-21 | 2013-07-03 | 新疆天业（集团）有限公司 | Method for processing microscale dust in tail gas of calcium carbide furnace |
-
2003
- 2003-06-13 CN CN 03258869 patent/CN2601124Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427390C (en) * | 2006-02-24 | 2008-10-22 | 昆明理工大学 | Method of purifying furnace gas of closed calcium carbide furnace |
| CN103182232A (en) * | 2013-03-21 | 2013-07-03 | 新疆天业（集团）有限公司 | Method for processing microscale dust in tail gas of calcium carbide furnace |
| CN103182232B (en) * | 2013-03-21 | 2015-10-28 | 新疆天业（集团）有限公司 | The processing method of micro-dust in a kind of calcium carbide stove exhaust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040128 Termination date: 20120613 |