CN203100459U - Ferro-nickel combustible flue gas waste heat boiler internal combustion system - Google Patents
Ferro-nickel combustible flue gas waste heat boiler internal combustion system Download PDFInfo
- Publication number
- CN203100459U CN203100459U CN2012206785806U CN201220678580U CN203100459U CN 203100459 U CN203100459 U CN 203100459U CN 2012206785806 U CN2012206785806 U CN 2012206785806U CN 201220678580 U CN201220678580 U CN 201220678580U CN 203100459 U CN203100459 U CN 203100459U
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- Prior art keywords
- waste heat
- heat boiler
- combustion
- flue gas
- boiler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002918 waste heat Substances 0.000 title claims abstract description 51
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 30
- 229910000863 Ferronickel Inorganic materials 0.000 title claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 37
- 239000003546 flue gas Substances 0.000 title abstract description 37
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000011504 laterite Substances 0.000 description 1
- 229910001710 laterite Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
A ferro-nickel combustible flue gas waste heat boiler internal combustion system comprises an enclosed submerged arc furnace, a settling chamber, a waste heat boiler, a dust remover, a chimney and an induced draft fan which are serially connected in a combination sequence via a flue to form a CO combustion heat recovery system. A combustion-supporting blower is arranged at the inlet of the waste heat boiler, and a CO detector B is arranged at the outlet of the waste heat boiler. Besides, a CO detector A and a temperature detector B are arranged in the flue of the settling chamber leading to the waste heat boiler in sequence. The blower supplements excess air to the waste heat boiler actively to enable CO in high-temperature flue gas to be combusted completely under supporting of oxygen, so that maximum combustion heat is obtained, and high-temperature flue gas recovery rate of the waste heat boiler is improved.
Description
Technical field
This practical flue gas during smelting system that newly relates in a kind of metallurgy industry especially relates to flammable smoke and waste steam boiler combustion system in a kind of nickel-iron smelting, belongs to that flue gas waste heat recovery utilizes technology in the smelting process.
Background technology
In metallurgy industry, waste heat recovery typically refers to CO combustion heat energy recovery in ore deposit hot stove product sensible heat recovery, flue gas waste heat recovery and the flue gas, by heat-exchange system the waste heat that produces in the production process is collected, reached the purpose of energy recovery, thereby realize energy-saving and cost-reducing requirement.Waste heat boiler is a kind of in the heat recovery system, by utilizing the waste gas in the industrial processes, the waste heat in the waste material, or the waste heat in the high-temperature flue gas of combustible burning back generation, produce hot water, steam, electric energy and supply with other workshop sections' uses by heat recovery.
Be that raw material is produced in the pyrometallurgical smelting process of primary nickel with the laterite nickel ore at present, can produce a large amount of CO in the calcining reduction process,, must try every possible means to make its completing combustion in order to utilize the combustion heat energy of CO.Traditional method is to allow the high-temperature flue gas that contains CO rise to the hot stove upper space in ore deposit, because the hot stove upper space in ore deposit just has air, airborne oxygen plays combustion-supporting effect for high-temperature flue gas, thereby make the CO in the flue gas burn, but this needs top, hot-top, ore deposit to have enough big space and holds abundant air, CO completing combustion in the flue gas is lost no time, realize the maximal efficiency of energy recovery.For head it off, someone adopts the hot stove in open or semi-enclosed ore deposit, make extraneous air can replenish the CO in the combustion-supporting flue gas in the hot stove in ore deposit at any time, thereby the combustion rate of CO in the raising flue gas, though but adopt this mode can make CO completing combustion in the flue gas, and discharging its flammable calorific value, a large amount of air enters the hot stove in ore deposit under not controlled situation, reduce the temperature of the hot stove in ore deposit itself, be unfavorable for the energy-conservation of the hot stove in ore deposit.
The utility model content
This practical new purpose: be intended to propose the flammable smoke and waste steam boiler combustion system of a kind of ferronickel, make the recovery of CO combustion heat energy be in controllable state, realize the maximization of UTILIZATION OF VESIDUAL HEAT IN efficient.
This ferronickel is flammable smoke and waste steam boiler combustion system comprises: the hot stove in closed ore deposit (2), expansion chamber (5), waste heat boiler (8), deduster (10), chimney (12), air-introduced machine (11);---------the built-up sequence serial connection of deduster---air-introduced machine---chimney constitutes CO combustion heat energy recovery system to waste heat boiler to expansion chamber according to the hot stove in closed ore deposit by flue; It is characterized in that: be provided with combustion-supporting air blast (1) in the porch of described waste heat boiler (8), and be provided with CO survey meter B(9) in the outlet of described waste heat boiler (8); Lead in waste heat boiler (8) flue at expansion chamber (5) simultaneously and be provided with a CO survey meter A(6 in regular turn) and temperature survey meter B(7).
[0006]Be provided with in the described waste heat boiler and detect the oxygen probe that waste heat boiler is crossed oxygen quotient.
Described combustion-supporting air blast, air-introduced machine are flame-proof converter control blower fan.
Burner can be set in the described waste heat boiler as required or not establish burner.
The utility model is surveyed CO composition in the flue gas by the CO survey meter is set; just control combustion blower according to the CO constituent concentration and initiatively replenish excess air to the waste heat boiler burner; make CO in the high-temperature flue gas in the combustion-supporting completing combustion down of oxygen; to obtain maximum combustion heat energy; this has significantly improved the recovery utilization rate of waste heat boiler for high-temperature flue gas; simultaneously; by the temperature survey meter is set; intermediate links to high-temperature flue gas detect; guarantee to keep sealed environment on the high-temperature flue gas flow path; both protected flue, guaranteed also that high-temperature flue gas as often as possible participated in the heat recovery process simultaneously.
Description of drawings
Fig. 1 is a system diagram of the present utility model.
Hot stove 3-ore deposit, the 1-closed ore deposit of combustion-supporting air blast 2-hot stove vacuum meter 4-temperature survey meter A 5-expansion chamber 6-CO survey meter A 7-temperature survey meter B 8-waste heat boiler 9-temperature survey meter B 10-deduster 11-air-introduced machine 12-chimney 13-oxygen detection instrument.
The specific embodiment
Below we come the flammable smoke and waste steam boiler combustion system of this ferronickel is further described in detail with concrete example in conjunction with the accompanying drawings, in the hope of set forth its structure and occupation mode more clearly.
The flammable smoke and waste steam boiler combustion system of this ferronickel as shown in the figure comprises: the hot stove 2 in closed ore deposit, expansion chamber 5, waste heat boiler 8, deduster 10, chimney 12, air-introduced machine 11;---------the built-up sequence serial connection of deduster---air-introduced machine---chimney constitutes CO combustion heat energy recycling system to waste heat boiler to expansion chamber according to the hot stove in closed ore deposit by flue; Be provided with combustion-supporting air blast 1 in the porch of described waste heat boiler 8, and be provided with CO survey meter B 9 in the outlet of described waste heat boiler 8; Lead in waste heat boiler 8 flues at expansion chamber 5 simultaneously and be provided with a CO survey meter A6 and temperature survey meter B in regular turn.
Also be provided with oxygen detection instrument 13 in the described waste heat boiler 8.
Burner can be set as required or not establish burner in the described waste heat boiler 8.
The hot stove in described closed ore deposit should have good airtight performance.
Concrete production process route is as follows:
Air-introduced machine 11 adopts VFC, by constantly with in the flue gas suction chimney 12 in the flue, flue gas after handling is carried out high altitude discharge, can also keep simultaneously controlled underbalance in flue, the hot stove 2 in ore deposit, because 10 pairs of air flow resistances of deduster that air-introduced machine 11 front ends are provided with are bigger, therefore, the withdrawing effect of chimney 12 can also alleviate the live load of air-introduced machine 11.Because the suction function in the hot stove in ore deposit 2, extraneous air be by the hot stove in a spot of suction ore deposit, and with the CO mixing portion burning of passing raw material layer, remaining combustible is along with flue gas is transported to waste heat boiler 8.When allowing flue gas in course of conveying, pass through expansion chamber 5, the CO survey meter A that the flue outlet place of expansion chamber 5 is provided with can survey and show CO composition in the flue gas, contain the CO composition in the flue gas if detect, the air that the combustion-supporting air blast 1 of adjusting flame-proof converter control will burn required on one's own initiative injects the burner of waste heat boiler 8, high-temperature flue gas mixes in the burner of waste heat boiler 8 with new wind, combustibles such as CO in the comburant oxygen high-temperature flue gas in the new wind, make the combustible in the flue gas be fully burned, ensure that combustion heat energy is recycled fully.Flue gas after handling through waste heat boiler 8 internal combustion continue along with flue stream to chimney 12, the CO survey meter B that is arranged on waste heat boiler 8 flue outlet places continues to survey for the second time to flue gas, check and whether also have remaining CO, if still exist CO in the flue gas this moment, illustrate that then the combustible in the flue gas is still imperfect combustion in the waste heat boiler 9, meanwhile, oxygen detection instrument 13 in the waste heat boiler 8 are also being surveyed and are being judged whether the mistake oxygen quotient waste heat boiler 8 in is suitable, as regulating and control of combustion-supporting air blast 1 intake with reference to factor.
In addition, in order to monitor the sealing of hot stove in ore deposit and flue, prevent that high-temperature flue gas from mixing the combustible burning that causes in the high-temperature flue gas with the air that flows into flue and damaging flue in course of conveying, be provided with temperature survey meter A 4 in the exit of the hot stove 2 in closed ore deposit, be provided with temperature survey meter B at the flue entrance place of waste heat boiler 8, judge by the temperature difference that two temperature survey meters are detected whether flue exists air leakage phenomena, so that the arrangement personnel in time repair.
Claims (4)
1. the flammable smoke and waste steam boiler combustion system of ferronickel comprises: the hot stove in closed ore deposit (2), expansion chamber (5), waste heat boiler (8), deduster (10), chimney (12), air-introduced machine (11);---------the built-up sequence serial connection of deduster---air-introduced machine---chimney constitutes CO combustion heat energy recovery system to waste heat boiler to expansion chamber according to the hot stove in closed ore deposit by flue; It is characterized in that: be provided with combustion-supporting air blast (1) in the porch of described waste heat boiler (8), and be provided with CO survey meter B(9) in the outlet of described waste heat boiler (8); Lead in waste heat boiler (8) flue at expansion chamber (5) simultaneously and be provided with a CO survey meter A(6 in regular turn) and temperature survey meter B(7).
2. the flammable smoke and waste steam boiler combustion system of a kind of ferronickel as claimed in claim 1 is characterized in that: be provided with in the described waste heat boiler (8) and detect the waste heat boiler oxygen probe (13) that waste heat boiler (8) is crossed oxygen quotient.
3. the flammable smoke and waste steam boiler combustion system of a kind of ferronickel as claimed in claim 1 is characterized in that: described combustion-supporting air blast (1), air-introduced machine (11) are the air blast of flame-proof converter control.
4. the flammable smoke and waste steam boiler combustion system of a kind of ferronickel as claimed in claim 1 is characterized in that: described waste heat boiler (8) is provided with burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206785806U CN203100459U (en) | 2012-12-11 | 2012-12-11 | Ferro-nickel combustible flue gas waste heat boiler internal combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206785806U CN203100459U (en) | 2012-12-11 | 2012-12-11 | Ferro-nickel combustible flue gas waste heat boiler internal combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203100459U true CN203100459U (en) | 2013-07-31 |
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| CN2012206785806U Expired - Fee Related CN203100459U (en) | 2012-12-11 | 2012-12-11 | Ferro-nickel combustible flue gas waste heat boiler internal combustion system |
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| CN (1) | CN203100459U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438415A (en) * | 2013-09-25 | 2013-12-11 | 济南澳海炭素有限公司 | Waste heat boiler of carbon calcining furnace |
| CN103673645A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power-generating coupling system for waste heat boilers |
| CN103673644A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Waste heat utilizing system of submerged-arc furnace |
| CN105485710A (en) * | 2014-10-09 | 2016-04-13 | 中国石油化工股份有限公司 | Air preheating method for waste sulfuric acid splitting process |
| CN107001956A (en) * | 2014-08-15 | 2017-08-01 | 陈涛 | Carbon molecules gasification fired boiler electricity-generating method |
-
2012
- 2012-12-11 CN CN2012206785806U patent/CN203100459U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438415A (en) * | 2013-09-25 | 2013-12-11 | 济南澳海炭素有限公司 | Waste heat boiler of carbon calcining furnace |
| CN103673645A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power-generating coupling system for waste heat boilers |
| CN103673644A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Waste heat utilizing system of submerged-arc furnace |
| CN107001956A (en) * | 2014-08-15 | 2017-08-01 | 陈涛 | Carbon molecules gasification fired boiler electricity-generating method |
| CN105485710A (en) * | 2014-10-09 | 2016-04-13 | 中国石油化工股份有限公司 | Air preheating method for waste sulfuric acid splitting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |