CN203731843U - Oxygen-rich nitrogen supply system for cupola furnace - Google Patents
Oxygen-rich nitrogen supply system for cupola furnace Download PDFInfo
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- CN203731843U CN203731843U CN201420119319.1U CN201420119319U CN203731843U CN 203731843 U CN203731843 U CN 203731843U CN 201420119319 U CN201420119319 U CN 201420119319U CN 203731843 U CN203731843 U CN 203731843U
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- nitrogen
- oxygen
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The utility model discloses an oxygen-rich nitrogen supply system for a cupola furnace. The oxygen-rich nitrogen supply system comprises an oxygen-rich nitrogen preparation device and an oxygen-rich nitrogen supply device, and is characterized in that the top of an absorption tower is connected with a nitrogen output pipeline, one end of the nitrogen output pipeline extends into a tower body of the absorption tower, and the other end of the nitrogen output pipeline is connected with a nitrogen tank; the nitrogen output pipeline is provided with an electromagnetic valve at the part close to the top of the absorption tower; the nitrogen supply device comprises a nitrogen supply pipeline, the electromagnetic valve and a nitrogen storage bag, wherein one end of the nitrogen supply pipeline is connected with the nitrogen tank, and the other end of the nitrogen supply pipeline is connected with a dust collection device of the cupola furnace; the electromagnetic valve and the nitrogen storage bag are sequentially arranged on the nitrogen supply pipeline close to the dust collection device of the cupola furnace. The oxygen-rich nitrogen supply system has the beneficial effects that the waste nitrogen produced in the original oxygen-enriched air supply technology of the cupola furnace is transmitted into the cupola furnace and is taken as power gas of a dust removal system of the cupola furnace, so that the phenomenon that bags are burnt since the air is used in the dust removal system of the existing cupola furnace can be avoided, the continuous work of the dust removal system of the cupola furnace can be realized, and more than ten thousand yuan of cost of the dust collecting bags can be saved every year.
Description
Technical field
The utility model belongs to furnace cupola ironmaking accessory system, particularly belongs to a kind of compressed air is directly made to the oxygen enrichment that can be used for furnace cupola and use, the feed system of nitrogen.
Background technology
The performance of furnace cupola is most important on the impact of casting quality cost, casting industry tradition smelting equipment furnace cupola oxygen-enriched blasting technology, refer to and utilize the method for oxygen-enriched combustion-supporting that foundry coke is fully burnt, improve rate of driving and cupola well tuyere zone ignition temperature, thereby improve furnace processor and reduce coke ratio.Furnace cupola bag-type dust is also the more advanced dust pelletizing system of casting industry, and existing dust pelletizing system is used air as the gas of vibration sack, and the oxygen containing in air and dust often the phenomenon of burning bag can occur.At present, in oxygen enrichment preparation and supply technology, be mainly that independently PSA(pressure-variable adsorption is set before blast furnace blower), VPSA(Vacuum Pressure Swing Adsorption) and membrane separating air oxygen and feedway, no matter be PSA or membrane separating air oxygenerator, only can prepare wherein a kind of gas of use, with oxygen, be just oxygenerator, with nitrogen, be just nitrogen making machine, wasted in vain another gas, caused the waste of the energy and resource.Chinese patent literature CN202849472U discloses a kind of oxygen enrichment dry gas feedway for blast furnace ironmaking, also be only that the feedway of producing the required oxygen enrichment dry gas of blast furnace process can be provided, can not make full use of the nonflammable feature of nitrogen in preparing oxic process discarded nitrogen as the gas of furnace cupola bag-type dust and realize making full use of of nitrogen.
Utility model content
The technical problems to be solved in the utility model is: a kind of feed system of oxygen enrichment, nitrogen for furnace cupola is provided, not only make its major product oxygen enrichment of producing (pressure 0.1Mpa) combustion-supporting for furnace cupola, and can also make byproduct nitrogen (pressure 0.5Mpa, adjustable) for furnace cupola bag-type dust or as other air force, oxygen enrichment, nitrogen can be fully utilized, realize energy-saving and emission-reduction, comprehensive utilization.
The technical scheme in the invention for solving the technical problem is: a kind of furnace cupola oxygen enrichment, the feed system of nitrogen, comprise oxygen enrichment, nitrogen preparation facilities and oxygen enrichment, nitrogen supply (NS) device, described oxygen enrichment, nitrogen preparation facilities comprises the air compressor machine that hermetic seal pipeline connects successively, cooling driers, charcoal canister, storage compressed air cylinder and oxygen, nitrogen making machine group, described oxygen, nitrogen making machine group consists of paired adsorption tower, described adsorption tower tower inner bottom part is equipped with activated alumina, on zeolite molecular sieve is housed, its tower body bottom hermetic seal is connecting the air duct that solenoid control is installed, its tower body top hermetic seal is connecting the oxygen output tube road that solenoid control is installed, the other end hermetic seal in described oxygen output tube road is connecting oxygen tank, it is characterized in that: described adsorption tower tower overhead gas is being tightly connected, and to stretch into adsorption tower tower body inner in one end, other end hermetic seal is connecting the nitrogen output channel of nitrogen pot, described nitrogen output channel is installed with magnetic valve near the position of described adsorption tower tower top, described nitrogen supply (NS) device is connected with nitrogen pot hermetic seal by one end, magnetic valve and the nitrogen storage gas bag on the nitrogen gas supply pipeline that the other end is connected with dedusting device for cupola furnace hermetic seal and the close nitrogen gas supply pipeline of dedusting device for cupola furnace, installed successively form.
The quantity of described paired adsorption tower is 1-2 couple.
The port that described nitrogen output channel stretches into one end of adsorption tower tower body inside is bell mouth shape.
The prior art that described oxygen enrichment feeding mechanism employing consists of parts such as large stove air blasts originally.
Prepare furnace cupola oxygen enrichment, the course of work of nitrogen: pressurization absorption phase: enter from adsorption tower bottom under the conveying of air blast through the dry compressed air of purifying, after active oxidation aluminium lamination is removed the hydrone and carbon dioxide molecule in compressed air, the zeolite molecular sieve fixed bed of flowing through and filling up, in being diffused into molecular sieve solid under the pressure that nitrogen molecule in compressed air is 0.5-0.55Mpa in pressure limit and the effect of zeolite molecular sieve adsorption, go, oxygen molecule and argon gas atmo are transported in storage oxygen tank through oxygen conveying pipe by bed, nitrogen molecule is through the absorption of zeolite molecular sieve a period of time, in zeolite molecular sieve particle, be full of nitrogen molecule, reach absorption saturation stage, the decompression desorption stage: closes compression air intlet magnetic valve is to the molecular sieve in adsorption tower desorption that reduces pressure, the pressure limit of decompression desorption is 0.25-0.45Mpa, utilize the oxygen rich air in another tower to rinse adsorbing saturated zeolite molecular sieve, the impurity such as nitrogen that zeolite molecular sieve desorption adsorbs, realize regeneration, the nitrogen of desorption enters storage nitrogen pot along nitrogen gas delivery-line.After decompression desorption completes, open compressed air inlet magnetic valve adsorption tower is filled with through the dry compressed air of purifying, enter pressurization absorption next time, the cyclic process of decompression desorption.
In system, be set to paired adsorption tower, oxygen is produced in a tower absorption, and another tower desorption and regeneration also produces nitrogen, is controlled the keying of magnetic valve by PLC cyclelog, makes two tower alternate cycles, to realize continuous oxygen enrichment, nitrogen production supply.
The course of work of nitrogen for furnace cupola: nitrogen prepared by above-mentioned nitrogen preparation facilities is transported to the nitrogen storage gas bag near dedusting device for cupola furnace by storing up nitrogen pot through nitrogen gas supply pipeline, when nitrogen storage gas bag pressure reaches 0.45-0.5Mpa, the magnetic valve being arranged in nitrogen storage gas bag and dedusting device for cupola furnace connecting pipe is opened, and nitrogen enters dedusting device for cupola furnace and carries out bag-type dust.
The beneficial effects of the utility model are due to this furnace cupola oxygen enrichment, the feed system of nitrogen is provided with oxygen enrichment, nitrogen preparation facilities and oxygen enrichment, nitrogen supply (NS) device, in the method for utilizing oxygen-enriched combustion-supporting, foundry coke is fully burnt, improve rate of driving and cupola well tuyere zone ignition temperature, thereby when improving furnace processor and reducing coke ratio profit, utilize the nonflammable feature of nitrogen, discarded nitrogen in former furnace cupola oxygen-enriched blasting oxygen technique is sent into furnace cupola by nitrogen preparation facilities and nitrogen supply (NS) device, power gas as furnace cupola dust pelletizing system, the sub-phenomenon of burning bag of having avoided existing furnace cupola dust pelletizing system to use air to occur, realized the normal work continuously of furnace cupola dust pelletizing system, annual more than 10 ten thousand yuan of the dedusting sack expenses of saving.Energy-saving and emission-reduction have been realized, comprehensive utilization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1. air compressor machine, 2. cooling driers, 3. charcoal canister, 4. storage compressed air cylinder, 5. oxygen, nitrogen making machine group, 6. adsorption tower, 7. Buddhist stone molecular sieve, 8. activated alumina, 9. air duct, 10. magnetic valve, 11. oxygen output tube roads, 12. oxygen tanks, 13. nitrogen output channels, 14. nitrogen pots, 15 nitrogen gas supply pipelines, 16 nitrogen storage gas bags, 17. dedusting device for cupola furnaces, 18. large stove air blasts.
The specific embodiment
The specific embodiment of the present utility model is, as shown in the figure:
Embodiment 1, a kind of furnace cupola oxygen enrichment as shown in Figure 1, the feed system of nitrogen, comprise oxygen enrichment, nitrogen preparation facilities and oxygen enrichment, nitrogen supply (NS) device, described oxygen enrichment, nitrogen preparation facilities comprises the air compressor machine 1 that hermetic seal pipeline connects successively, cooling driers 2, charcoal canister 3, storage compressed air cylinder 4 and oxygen, nitrogen making machine group 5, described oxygen, nitrogen making machine group 5 consists of paired adsorption tower 6, described adsorption tower 6 tower inner bottom parts are equipped with activated alumina 8, on zeolite molecular sieve 7 is housed, its tower body bottom hermetic seal is connecting the air duct 9 that magnetic valve 10 controls are installed, its tower body top hermetic seal is connecting the oxygen output tube road 11 that magnetic valve 10 controls are installed, the other end hermetic seal in described oxygen output tube road 11 is connecting oxygen tank 12, it is characterized in that: described adsorption tower 6 tower overhead gases are being tightly connected, and to stretch into adsorption tower 6 tower bodies inner in one end, other end hermetic seal is connecting the nitrogen output channel 13 of nitrogen pot 14, described nitrogen output channel 13 is installed with magnetic valve 10 near the position of described adsorption tower 6 tower tops, described nitrogen supply (NS) device is connected with nitrogen pot 14 hermetic seals by one end, magnetic valve 10 and the nitrogen storage gas bag 16 on the nitrogen gas supply pipeline 15 that the other end is connected with dedusting device for cupola furnace 17 hermetic seals and the close nitrogen gas supply pipeline 15 of dedusting device for cupola furnace 17, installed successively form.
The quantity of described paired adsorption tower 6 is 1-2 couple.
The port that described nitrogen output channel 13 stretches into one end of adsorption tower 6 tower body inside is bell mouth shape.
The prior art that described oxygen enrichment feeding mechanism employing consists of large stove air blast 18 originally.
Claims (3)
1. a furnace cupola oxygen enrichment, the feed system of nitrogen, comprise oxygen enrichment, nitrogen preparation facilities and oxygen enrichment, nitrogen supply (NS) device, described oxygen enrichment, nitrogen preparation facilities comprises the air compressor machine that hermetic seal pipeline connects successively, cooling driers, charcoal canister, storage compressed air cylinder and oxygen, nitrogen making machine group, described oxygen, nitrogen making machine group consists of paired adsorption tower, described adsorption tower tower inner bottom part is equipped with activated alumina, on zeolite molecular sieve is housed, its tower body bottom hermetic seal is connecting the air duct that solenoid control is installed, its tower body top hermetic seal is connecting the oxygen output tube road that solenoid control is installed, the other end hermetic seal in described oxygen output tube road is connecting oxygen tank, it is characterized in that: described adsorption tower tower overhead gas is being tightly connected, and to stretch into adsorption tower tower body inner in one end, other end hermetic seal is connecting the nitrogen output channel of nitrogen pot, described nitrogen output channel is installed with magnetic valve near the position of described adsorption tower tower top, described nitrogen supply (NS) device is connected with nitrogen pot hermetic seal by one end, magnetic valve and the nitrogen storage gas bag on the nitrogen gas supply pipeline that the other end is connected with dedusting device for cupola furnace hermetic seal and the close nitrogen gas supply pipeline of dedusting device for cupola furnace, installed successively form.
2. a kind of feed system of oxygen enrichment, nitrogen for furnace cupola according to claim 1, is characterized in that: the quantity of described paired adsorption tower is 1-2 couple.
3. a kind of feed system of oxygen enrichment, nitrogen for furnace cupola according to claim 1 and 2, is characterized in that: the port that described nitrogen output channel stretches into one end of adsorption tower tower body inside is bell mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119319.1U CN203731843U (en) | 2014-03-17 | 2014-03-17 | Oxygen-rich nitrogen supply system for cupola furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119319.1U CN203731843U (en) | 2014-03-17 | 2014-03-17 | Oxygen-rich nitrogen supply system for cupola furnace |
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| Publication Number | Publication Date |
|---|---|
| CN203731843U true CN203731843U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119319.1U Withdrawn - After Issue CN203731843U (en) | 2014-03-17 | 2014-03-17 | Oxygen-rich nitrogen supply system for cupola furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868346A (en) * | 2014-03-17 | 2014-06-18 | 济南市平阴县玛钢厂 | Oxygen-enriched nitrogen supply system for cupola furnace |
| CN112853020A (en) * | 2020-12-31 | 2021-05-28 | 广钢气体(广州)有限公司 | Water-cooled cupola furnace and smelting method using same |
-
2014
- 2014-03-17 CN CN201420119319.1U patent/CN203731843U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868346A (en) * | 2014-03-17 | 2014-06-18 | 济南市平阴县玛钢厂 | Oxygen-enriched nitrogen supply system for cupola furnace |
| CN112853020A (en) * | 2020-12-31 | 2021-05-28 | 广钢气体(广州)有限公司 | Water-cooled cupola furnace and smelting method using same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20150520 |
|
| RGAV | Abandon patent right to avoid regrant |