CN204901762U - Recuperative heater pulse combustion control system - Google Patents
Recuperative heater pulse combustion control system Download PDFInfo
- Publication number
- CN204901762U CN204901762U CN201520691154.XU CN201520691154U CN204901762U CN 204901762 U CN204901762 U CN 204901762U CN 201520691154 U CN201520691154 U CN 201520691154U CN 204901762 U CN204901762 U CN 204901762U
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- China
- Prior art keywords
- air
- storage tank
- heat storage
- heat accumulation
- coal gas
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The utility model relates to a recuperative heater pulse combustion control system belongs to heating furnace technical field. Technical scheme is: contain furnace body (1), air heat accumulation case (2) and coal gas heat accumulation case (3), furnace body (1) both sides symmetrical arrangement a plurality of air heat accumulation case (2) and coal gas heat accumulation case (3) are arranged with the air heat accumulation case (2) of one side and coal gas heat accumulation case (3) in turn, air heat accumulation case (2) contains heat accumulation case air inlet (4) and heat accumulation case air outlet, and heat accumulation case air outlet comprises air spout (5) and the air spout of arranging side by side two (6), coal gas heat accumulation case and bag implicit hot case gas inlet (9) and the export of heat accumulation case coal gas, the export of heat accumulation case coal gas comprises coal gas spout (7) and the coal gas spout of arranging side by side two (8), and adjacent air spout (5) constitutes a burning unit with a coal gas spout bevel. The beneficial effects of the utility model are that: improve temperature homogeneity, reduce coal gas consumption.
Description
Technical field
The utility model relates to a kind of combustion control system of heat accumulating heating furnace, belongs to metallurgy industry furnace apparatus technical field.
Background technology
At present, metallurgy industry recuperative heater all adopts bi-cross limitation control mode.Bi-cross limitation control refers to by the setting to coal gas or air mass flow, the flow of air or coal gas is followed up automatically, becomes dual crossing pattern; Amplitude limit refers to for avoiding by response lag in the process of follow-up, and order setting side regulates according to the span of setting, and this span is called amplitude limit.This regulative mode and furnace temperature, board briquette, slab time inside furnace, furnace pressure are unrelated, and tapping temperature hit rate can be caused on the low side, and the slab poker temperature difference is comparatively large, and coal gas flogs a dead horse phenomenon on the high side.And due to recuperative heater burner arrange unreasonable, cause board briquette uniformity poor.And burner hearth is wider, the slab temperature difference is larger.
Utility model content
The utility model object is to provide a kind of recuperative heater pulse combustion control system, makes flame rigidity remain kilter, improves the temperature homogeneity of slab, solves Problems existing in background technology.
The technical solution of the utility model is:
A kind of recuperative heater pulse combustion control system, comprise body of heater, air heat storage tank and coal gas heat storage tank, body of heater bilateral symmetry arranges multiple air heat storage tank and coal gas heat storage tank, the air heat storage tank of the same side and coal gas heat storage tank are alternately arranged, described air heat storage tank comprises heat storage tank air intake and heat storage tank air outlet slit, heat storage tank air outlet slit is made up of the air port one be arranged side by side and air port two, described coal gas heat storage tank comprises heat storage tank gas entry and heat storage tank gas exit, heat storage tank gas exit is made up of the gas port one be arranged side by side and gas port two, adjacent air port one forms a fuel element with gas port one oblique.
Above-mentioned recuperative heater pulse combustion control system, air three-way diverter valve and gas three-way reversal valve is also comprised in composition, described air three-way diverter valve comprises air intlet, reversal valve air outlet slit and exhaust opening one, reversal valve air outlet slit is communicated with the heat storage tank air intake in air heat storage tank, and described gas three-way reversal valve is identical with air triplet commutation valve arrangement.
Adopt the utility model, utilize two cutting action of air three-way diverter valve and gas three-way reversal valve and heat accumulating type to be interrupted the principle of reversing combustion, realize pulse burning control technique by division commutating period and break time.
The beneficial effects of the utility model are: improve board briquette uniformity, reduce ton steel gas consumption.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model partial enlarged drawing;
Fig. 3 is the utility model air threeway scavenging air valve schematic diagram;
In figure: body of heater 1, air heat storage tank 2, coal gas heat storage tank 3, heat storage tank air intake 4, air port 1, air port 26, gas port 1, gas port 28, heat storage tank gas entry 9, reversal valve air outlet slit 10, exhaust opening 1, air intlet 12, valve plate 13.
Detailed description of the invention
Below in conjunction with accompanying drawing, by example, the utility model is described in further detail.
With reference to accompanying drawing 1, 2, 3, a kind of recuperative heater pulse combustion control system, comprise body of heater 1, air heat storage tank 2 and coal gas heat storage tank 3, body of heater 1 bilateral symmetry arranges multiple air heat storage tank 2 and coal gas heat storage tank 3, the air heat storage tank 2 of the same side and coal gas heat storage tank 3 are alternately arranged, described air heat storage tank 2 comprises heat storage tank air intake 4 and heat storage tank air outlet slit, heat storage tank air outlet slit is made up of the air port 1 be arranged side by side and air port 26, described coal gas heat storage tank 3 comprises heat storage tank gas entry 9 and heat storage tank gas exit, heat storage tank gas exit is made up of the gas port 1 be arranged side by side and gas port 28, adjacent air port 1 forms a fuel element with gas port 1 oblique.
Air three-way diverter valve and gas three-way reversal valve is also comprised in above-mentioned recuperative heater pulse combustion control system, described air three-way diverter valve comprises air intlet 12, reversal valve air outlet slit 10 and exhaust opening 1, reversal valve air outlet slit 10 is communicated with the heat storage tank air intake 4 in air heat storage tank 2, and described gas three-way reversal valve is identical with air triplet commutation valve arrangement.
In the present embodiment:
With reference to accompanying drawing 1, body of heater 1 is four sections of heat supplies, is followed successively by heating one section, heating two sections, soaking zone and under soaking zone by charging end, and each hot arc that supplies independently regulates and controls by detecting furnace temperature, automatically adjusts to the space gas flow of each section.Wherein heat one section and comprise 6 gas ports and 6 air ports; Heat two sections and comprise 6 gas ports and 6 air ports; Soaking zone comprises 5 gas ports and 5 air ports; 5 gas ports and 5 air ports are comprised under soaking zone.
With reference to accompanying drawing 3, in heating one section and heating two sections, air port and gas port adopt large-scale three-way diverter valve to realize segmentation, two-sided control mode; Air port on soaking zone and under soaking zone and gas port all adopt individual small three-way diverter valve, realize the overall dispersal reversing of soaking zone combustion system.
With reference to accompanying drawing 2, adjacent air port 1 and gas port 1 oblique form a fuel element (burner), empty, coal gas intersection mixed combustion.Each heat storage tank after separation establishes independent air inlet-outlet pipe and valve, like this, unrelated between each fuel element, can facilitate single fuel element (burner) open and close separately, complete commutation function.
With reference to accompanying drawing 1,2,3, in combustion system, utilize two cutting action of air three-way diverter valve and gas three-way reversal valve and heat accumulating type to be interrupted the principle of reversing combustion, realize pulse burning control technique by division commutating period and break time.Calculating furnace temperature variation tendency mainly through PLC determines heating demand, and situation is as follows:
(1) temperature difference between furnace temperature and the temperature of setting has when diminishing trend, and illustrate that furnace temperature is in rising, heating demand is bigger than normal, heating demand should be reduced;
(2) temperature difference between furnace temperature and the temperature of setting have become main trend time, illustrates furnace temperature declining, heating demand is less than normal, heating demand should be increased;
(3), when the temperature difference between furnace temperature and the temperature of setting does not become main trend, illustrate that furnace temperature is more constant within the scope controlled, heating demand is suitable.
The explanation of impulse commutation time and temperature spot:
(1) after selection soaking zone is Pulse Width Control, Current Temperatures is less than design temperature less than 10 DEG C, and as design temperature 1250 DEG C, when temperature is less than 1240 DEG C, system continuous burning is that Current Temperatures raises continuously; Start to calculate the cutoff time (i.e. triplet commutation turn-off time) when temperature is greater than 1250 DEG C of systems;
Now the commutation cycle of system is: reversal valve commutation cycle+turn-off time=62s, when after reversal valve burning one-period (60s), then complete shut-down 2s, then commutate, proceed reversal valve commutation cycle+combustion process of turn-off time, the turn-off time wherein is automatically calculated by program and provides;
When temperature continues to be increased beyond 1260 DEG C, 1st group of reversal valve can excise (three-way diverter valve state is complete shut-down) by system automatically from exchange system, do not burn, when temperature continues to be increased beyond 1270 DEG C, 2nd group of reversal valve can excise (three-way diverter valve state is complete shut-down) by system automatically from exchange system, do not burn, now 1,2 group of reversal valve all will not participate in reversing combustion simultaneously;
(2) for heating one section and heating two sections, when the turn-off time that system calculates automatically is 60s, fire box temperature continues to rise, and illustrate that the heating load ability of space gas burner is too large, system will reduce the given flow of space gas automatically.Otherwise be 0 when the turn-off time that system-computed goes out, but the temperature of burner hearth also declines in continuation, the heating load scarce capacity of space gas burner is described, system will strengthen space gas flow automatically.
Claims (2)
1. a recuperative heater pulse combustion control system, it is characterized in that comprising body of heater (1), air heat storage tank (2) and coal gas heat storage tank (3), body of heater (1) bilateral symmetry arranges multiple air heat storage tank (2) and coal gas heat storage tank (3), the air heat storage tank (2) of the same side and coal gas heat storage tank (3) are alternately arranged, described air heat storage tank (2) comprises heat storage tank air intake (4) and heat storage tank air outlet slit, heat storage tank air outlet slit is made up of the air port one (5) be arranged side by side and air port two (6), described coal gas heat storage tank (3) comprises heat storage tank gas entry (9) and heat storage tank gas exit, heat storage tank gas exit is made up of the gas port one (7) be arranged side by side and gas port two (8), adjacent air port one (5) forms a fuel element with gas port one (7) oblique.
2. recuperative heater pulse combustion control system according to claim 1, it is characterized in that also comprising air three-way diverter valve and gas three-way reversal valve in composition, described air three-way diverter valve comprises air intlet (12), reversal valve air outlet slit (10) and exhaust opening one (11), reversal valve air outlet slit (10) is communicated with the heat storage tank air intake (4) in air heat storage tank (2), and described gas three-way reversal valve is identical with air triplet commutation valve arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691154.XU CN204901762U (en) | 2015-09-09 | 2015-09-09 | Recuperative heater pulse combustion control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691154.XU CN204901762U (en) | 2015-09-09 | 2015-09-09 | Recuperative heater pulse combustion control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204901762U true CN204901762U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520691154.XU Expired - Fee Related CN204901762U (en) | 2015-09-09 | 2015-09-09 | Recuperative heater pulse combustion control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204901762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068229A (en) * | 2019-04-11 | 2019-07-30 | 赛能杰高新技术股份有限公司 | A method of improving recuperative heater efficiency of combustion |
-
2015
- 2015-09-09 CN CN201520691154.XU patent/CN204901762U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068229A (en) * | 2019-04-11 | 2019-07-30 | 赛能杰高新技术股份有限公司 | A method of improving recuperative heater efficiency of combustion |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20190909 |