CN102645107A - Coal gas recycling device of double preheating heat accumulating type heating furnace - Google Patents
Coal gas recycling device of double preheating heat accumulating type heating furnace Download PDFInfo
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- CN102645107A CN102645107A CN201210137358XA CN201210137358A CN102645107A CN 102645107 A CN102645107 A CN 102645107A CN 201210137358X A CN201210137358X A CN 201210137358XA CN 201210137358 A CN201210137358 A CN 201210137358A CN 102645107 A CN102645107 A CN 102645107A
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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
Abstract
The invention discloses a coal gas recycling device of a double preheating heat accumulating type heating furnace. According to the device, two coal gas channels are added between a coal gas reversing valve and a coal gas heat accumulation burner, and unilateral control devices are additionally arranged on coal gas channels or the coal gas reversing valve is replaced on the coal gas channels. The original state that the coal gas and a waste gas are alternately circulated in the channels is changed, two channels of four coal gas channels are used for circulating the coal gas, the other two channels are used for circulating the waste gas, the coal gas which is exhausted with the waste gas is recycled and the waste gas which enters into the heating furnace with the coal gas is exhausted, and thereby the coal gas is saved, the fire cutoff time caused by a burner reversing is shortened, the stability of the furnace pressure and the temperature are guaranteed, and the heating quality and working efficiency are improved.
Description
Technical field
The present invention relates to double pre-heating heat accumulation type heating furnace field, relate in particular to double pre-heating heat accumulation type heating furnace gas recovering device.
Background technology
The preheating of double pre-heating heat accumulation type heating furnace collection space gas, burning, toxic emission three big functions are one.Burner is worked in pairs, the two exchange burning and smoke evacuation duty, corresponding conversion heat release of heat storage and heat absorption state.
The operation principle that coal gas reversal valve and air reversing valve once commutate is shown in accompanying drawing 1.
Coal gas and normal temperature air get into gas passage B105, air duct B106 through coal gas reversal valve 103 and air reversing valve 104 respectively through gas passage A101 and air duct A102; Carry out preheating through coal gas heat storage A107, air heat storage A108 then; Burner flame after the preheating; Combustion product heats heating object in burner hearth; The coal gas waste gas that produces is with air off gas gets into coal gas heat storage B109 respectively and air heat storage B110 carries out heat exchange, leaves most of heat for become low temperature behind the heat storage coal gas waste gas and air off gas, and coal gas waste gas and air off gas are passed through gas passage C111 and air duct C112 again; Get into gas passage D113 and air duct D114 through coal gas reversal valve 103 and air reversing valve 104, get into chimney through air-introduced machine at last.
Coal gas reversal valve and air reversing valve carry out the operation principle of secondary switching-over, shown in accompanying drawing 2.
Coal gas and normal temperature air get into gas passage C111, air duct C112 through coal gas reversal valve 103 and air reversing valve 104 respectively through gas passage A101 and air duct A102; Carry out preheating through coal gas heat storage B109, air heat storage B110 then; Burner flame after the preheating; Combustion product heats heating object in burner hearth; The coal gas waste gas that produces is with air off gas gets into coal gas heat storage A107 respectively and air heat storage A108 carries out heat exchange, leaves most of heat for become low temperature behind the heat storage coal gas waste gas and air off gas, and coal gas waste gas and air off gas are passed through gas passage B105 and air duct B106 again; Get into gas passage D113 and air duct D114 through coal gas reversal valve 103 and air reversing valve 104, get into chimney through air-introduced machine at last.
In sum, the problem of existence is: before the switching-over of coal gas reversal valve secondary, be coal gas among the gas passage B105; Be waste gas among the gas passage C111, after the coal gas reversal valve carried out the secondary switching-over, coal gas original among the gas passage B105 can be discharged along with waste gas; Waste gas original among the gas passage C111 can get into heating furnace along with coal gas; This has not only caused the waste of coal gas, and aggravation makes the fluctuation of heating furnace furnace pressure big because of the cutoff that burner switching-over work causes; Be difficult to control, thereby influence the heating quality and the operating efficiency of heating object.
Summary of the invention
To the problems referred to above, the present invention aims to provide a kind of double pre-heating heat accumulation type heating furnace gas recovering device, is used to reclaim the coal gas of discharging along with waste gas, and discharges the waste gas that gets into heating furnace along with coal gas.
For achieving the above object, the present invention realizes through following method.
Between coal gas reversal valve and coal gas heat-accumulating burner, increase by two gas passages, and on all gas passages, increase unidirectional control device or change the coal gas reversal valve.
Unidirectional control device, preferred, adopt check valve, economic and practical; Inferior choosing, adopt electrically-controlled valve, precision is high, is easy to control.
Unidirectional control device, preferred, only be installed in the gas piping head, simple economy; Inferior choosing, the gas piping rostral-caudal is all installed, and precision is high.
Changing the coal gas reversal valve is that original four-way change-over valve is replaced by six-way transfer valve.
The present invention is through increasing by two gas passages between coal gas reversal valve and coal gas heat-accumulating burner; Change in the original passage the alternately state of circulation of coal gas and waste gas, make two channel flow ventilating coal gas in four gas passages, two passages circulation waste gas; The coal gas that recovery is discharged along with waste gas; And discharge the waste gas that gets into heating furnace along with coal gas, and both reached the purpose of practicing thrift coal gas, shortened the cutoff time of causing again because of the burner switching-over; Guarantee the stable of furnace pressure and temperature, improve heating quality and operating efficiency.
Description of drawings
Fig. 1 is a pair of burner of double pre-heating heat accumulation type heating furnace of the prior art work sketch map that once commutates.
Fig. 2 is a pair of burner secondary of the double pre-heating heat accumulation type heating furnace switching-over work sketch map of prior art.
Fig. 3 is a pair of burner of the double pre-heating heat accumulation type heating furnace of the present invention work sketch map that once commutates.
Fig. 4 is a pair of burner secondary of a double pre-heating heat accumulation type heating furnace of the present invention switching-over work sketch map.
Shown in the figure: 101, gas passage A; 102, air duct A; 103, coal gas reversal valve; 104 air reversing valves; 105, gas passage B; 106, air duct B; 107, coal gas heat storage A; 108, air heat storage A; 109, coal gas heat storage B; 110, air heat storage B; 111, gas passage C; 112, air duct C; 113, gas passage D; 114, air duct D; 301, gas passage E; 302, gas passage F; 303, valve A; 304, valve B; 305, valve C; 306, valve D.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.
Like Fig. 3 and shown in Figure 4; Between coal gas reversal valve 103 and coal gas heat-accumulating burner, increase gas passage E301 and gas passage F302; And increase valve C305, valve D306 in the above respectively, increase valve A303, valve B304 at gas passage B105, gas passage C111 simultaneously.
As shown in Figure 3, coal gas reversal valve 103 once commutates with air reversing valve 104, i.e. gas passage B105 and gas passage C111 work (valve A303 and valve B304 open, and valve C305 and valve D306 close).
Coal gas and normal temperature air get into gas passage B105, air duct B106 through coal gas reversal valve 103 and air reversing valve 104 respectively through gas passage A101 and air duct A102; Carry out preheating through coal gas heat storage A107, air heat storage A108 then; Burner flame after the preheating; Combustion product heats heating object in burner hearth; The coal gas waste gas that produces is with air off gas gets into coal gas heat storage B109 respectively and air heat storage B110 carries out heat exchange, leaves most of heat for become low temperature behind the heat storage coal gas waste gas and air off gas, and coal gas waste gas and air off gas are passed through gas passage C111 and air duct C112 again; Get into gas passage D113 and air duct D114 through coal gas reversal valve 103 and air reversing valve 104, get into chimney through air-introduced machine at last.
As shown in Figure 4, coal gas reversal valve 103 carries out secondary switching-over, i.e. gas passage E301 and gas passage F302 work (valve C305 and valve D306 open, and valve A303 and valve B304 close) with air reversing valve 104.
Coal gas and normal temperature air get into gas passage F302, air duct C112 through coal gas reversal valve 103 and air reversing valve 104 respectively through gas passage A101 and air duct A102; Carry out preheating through coal gas heat storage B109, air heat storage B110 then; Burner flame after the preheating; Combustion product heats heating object in burner hearth; The coal gas waste gas that produces is with air off gas gets into coal gas heat storage A107 respectively and air heat storage A108 carries out heat exchange, leaves most of heat for become low temperature behind the heat storage coal gas waste gas and air off gas, and coal gas waste gas and air off gas are passed through gas passage E301 and air duct B106 again; Get into gas passage D113 and air duct D114 through coal gas reversal valve 103 and air reversing valve 104, get into chimney through air-introduced machine at last.
In sum, when coal gas reversal valve 103 after once switching-over work is accomplished, the coal gas among the gas passage B105 is retained in the passage through closing of valve A303, and the waste gas among the gas passage C111 is retained in the passage through closing of valve B304.Instantly time coal gas channel B 105 is worked with gas passage C111, and when promptly valve A303 and valve B304 opened, coal gas continued to use, and waste gas is discharged.In like manner, after the 103 secondary switching-over work of coal gas reversal valve were accomplished, the coal gas among the gas passage F302 was retained in the passage through closing of valve D306, and the waste gas among the gas passage E301 is retained in the passage through closing of valve C305.Instantly time coal gas passage F302 and gas passage E301 work, when promptly valve D306 and valve C305 opened, coal gas continued to use, and waste gas is discharged.
In order to improve efficiency of combustion, the present invention also can increase air duct simultaneously between air reversing valve and air heat-accumulating burner.
Claims (7)
1. double pre-heating heat accumulation type heating furnace gas recovering device; Be between coal gas reversal valve and coal gas heat-accumulating burner, to increase by two gas passages, it is characterized in that:, change the state that coal gas and waste gas alternately circulate in the original passage through control device; Make two channel flow ventilating coal gas in four gas passages; Two passage circulation waste gas reclaim the coal gas of discharging along with waste gas, and discharge the waste gas that gets into heating furnace along with coal gas.
2. double pre-heating heat accumulation type heating furnace gas recovering device according to claim 1; It is characterized in that: both reached the purpose of practicing thrift coal gas; Shortened the cutoff time of causing again, guaranteed the stable of furnace pressure and temperature, improved heating quality and operating efficiency because of the burner switching-over.
3. control device according to claim 1 is characterized in that: on all gas passages, increase unidirectional control device or change the coal gas reversal valve.
4. unidirectional control device according to claim 3 is characterized in that: preferred, adopt check valve, and economic and practical; Inferior choosing, adopt electrically-controlled valve, precision is high, is easy to control.
5. unidirectional control device according to claim 3 is characterized in that: preferably, only be installed in the head of gas piping, simple economy; Inferior choosing, the gas piping rostral-caudal is all installed, and precision is high.
6. replacing coal gas reversal valve according to claim 3 is characterized in that: original four-way change-over valve is replaced by six-way transfer valve.
7. double pre-heating heat accumulation type heating furnace gas recovering device according to claim 1 is characterized in that: in order to improve efficiency of combustion, also can between air reversing valve and air heat-accumulating burner, increase air duct simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210137358XA CN102645107A (en) | 2012-05-07 | 2012-05-07 | Coal gas recycling device of double preheating heat accumulating type heating furnace |
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| CN201210137358XA CN102645107A (en) | 2012-05-07 | 2012-05-07 | Coal gas recycling device of double preheating heat accumulating type heating furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014312A (en) * | 2012-12-26 | 2013-04-03 | 中冶南方(武汉)威仕工业炉有限公司 | Control method of regenerative burner of regenerative heating furnace |
| CN104061364A (en) * | 2014-06-20 | 2014-09-24 | 内蒙古包钢钢联股份有限公司 | Two-position three-way reversing valve stem seal replacing method |
| CN104791777A (en) * | 2015-04-09 | 2015-07-22 | 上海嘉德环境能源科技有限公司 | Combustion method for reducing NOx by adopting self-circulation of flue gas |
| CN109404894A (en) * | 2018-12-07 | 2019-03-01 | 河北天牧节能设备有限公司 | Heat storing type energy-saving emission reduction heating furnace and heating means |
| CN111043869A (en) * | 2019-12-23 | 2020-04-21 | 江苏省沙钢钢铁研究院有限公司 | Heating furnace heat exchange and heat storage combined heat recovery system and operation method thereof |
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| CN2399693Y (en) * | 1999-12-09 | 2000-10-04 | 马鞍山钢铁股份有限公司 | Smoke bakc-blowing appts. of non-return heat accumulating industrial furnace |
| CN2451905Y (en) * | 2000-11-17 | 2001-10-03 | 冶金工业部鞍山热能研究院 | Honey-comb thermal accumulator gas and air double-preheating heat storage combustor for heating furnace |
| CN201778080U (en) * | 2010-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Heat accumulating type soaking pit furnace |
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2012
- 2012-05-07 CN CN201210137358XA patent/CN102645107A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2399693Y (en) * | 1999-12-09 | 2000-10-04 | 马鞍山钢铁股份有限公司 | Smoke bakc-blowing appts. of non-return heat accumulating industrial furnace |
| CN2451905Y (en) * | 2000-11-17 | 2001-10-03 | 冶金工业部鞍山热能研究院 | Honey-comb thermal accumulator gas and air double-preheating heat storage combustor for heating furnace |
| CN201778080U (en) * | 2010-08-18 | 2011-03-30 | 宝山钢铁股份有限公司 | Heat accumulating type soaking pit furnace |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014312A (en) * | 2012-12-26 | 2013-04-03 | 中冶南方(武汉)威仕工业炉有限公司 | Control method of regenerative burner of regenerative heating furnace |
| CN103014312B (en) * | 2012-12-26 | 2014-04-09 | 中冶南方(武汉)威仕工业炉有限公司 | Control method of regenerative burner of regenerative heating furnace |
| CN104061364A (en) * | 2014-06-20 | 2014-09-24 | 内蒙古包钢钢联股份有限公司 | Two-position three-way reversing valve stem seal replacing method |
| CN104791777A (en) * | 2015-04-09 | 2015-07-22 | 上海嘉德环境能源科技有限公司 | Combustion method for reducing NOx by adopting self-circulation of flue gas |
| CN104791777B (en) * | 2015-04-09 | 2017-11-21 | 上海嘉德环境能源科技有限公司 | One kind reduces NO using flue gas self-loopaXCombustion method |
| CN109404894A (en) * | 2018-12-07 | 2019-03-01 | 河北天牧节能设备有限公司 | Heat storing type energy-saving emission reduction heating furnace and heating means |
| CN109404894B (en) * | 2018-12-07 | 2023-10-20 | 河北天牧节能设备有限公司 | Heat accumulating type energy-saving emission-reducing heating furnace and heating method |
| CN111043869A (en) * | 2019-12-23 | 2020-04-21 | 江苏省沙钢钢铁研究院有限公司 | Heating furnace heat exchange and heat storage combined heat recovery system and operation method thereof |
| CN111043869B (en) * | 2019-12-23 | 2021-06-22 | 江苏省沙钢钢铁研究院有限公司 | Heating furnace heat exchange and heat storage combined heat recovery system and operation method thereof |
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Application publication date: 20120822 |