CN1307220A - Industrial oxidation-free metal furnace and technology - Google Patents
Industrial oxidation-free metal furnace and technology Download PDFInfo
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- CN1307220A CN1307220A CN 00100624 CN00100624A CN1307220A CN 1307220 A CN1307220 A CN 1307220A CN 00100624 CN00100624 CN 00100624 CN 00100624 A CN00100624 A CN 00100624A CN 1307220 A CN1307220 A CN 1307220A
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Abstract
At the bottom of the high efficiency heat accumulating industrial furnace along the furnace wall is set at least a pair of heat accumulators with heat accumulating body in the middle part, combustion supporting air and smoke exhausting channel in the low part, burner in the upper part and fuel gas nozzle and secondary combustion supporting air nozzle outside the burner. The gas nozzle and secondary combustion supporting air nozzle pipes as well as primary combustion supporting channel are connected to the outer reversing mechanism. The reversing mechanism controls the working state of the two heat accumulators for alternate preheating primary combustion supporting air and exhausting smoke and accumulating heat.
Description
The invention belongs to industrial furnace, particularly heating of METAL HEATING PROCESS or metallic heat treating furnace and oxidation-free metal or Technology for Heating Processing.
The prior art industrial oxidation-free metal furnace is taked the inert gas shielding measure for avoiding metal in heating or oxidation during heat treatment, conducts heat indirect with inert gas.The shortcoming of its existence has at first strengthened the consumption of the energy, and makes type of furnace complex structureization, thereby increases the cost of product.
The objective of the invention is to propose a kind of industrial oxidation-free metal furnace and oxidation-free metal heating process technical scheme, have energy savings, reduce product cost and type of furnace simple structure, the advantage of being convenient to implement.
Industrial oxidation-free metal furnace of the present invention, comprise body of heater, combustion air pipeline, gas pipeline, along both sides furnace wall direction at least one pair of heat storage tank is set in the body of heater bottom, the heat storage tank bottom is combustion air passage/discharge flue, heat storage is filled at the heat storage tank middle part, heat storage tank top is burning groove, and combustion gas spout and secondary combustion air spout are set on the burning groove lateral wall; The pipeline of combustion gas spout, secondary combustion air spout and the stove Outer Tube of the primary air passage changement outer with being arranged on body of heater links.The present invention can also be provided with two pairs of heat storage tanks along both sides furnace wall direction in the body of heater bottom, the top burning groove of two heat storage tanks of body of heater homonymy is shared burning groove, the combustion gas spout that is provided with on burning groove two lateral walls on heat storage tank top, body of heater both sides is arranged on the blast tube of a pair of heat storage tank bottom of the body of heater both sides that are placed in, and another bottom to the heat storage tank of the body of heater both sides that are placed in is the combustion air passage; The combustion air passage of two pairs of heat storage tank bottoms and blast tube also are discharge flues in the accumulation of heat cycle.The heat storage that the present invention fills at heat storage tank middle part is spherical or cellular, heat storage support in its underpart by heat-resistant net and with the gas passage of heat storage tank bottom separately, the gap of gas communication is arranged in heat-resistant net and heat storage.
Adopt the oxidation-free metal heating process of non-oxidation industrial furnace of the present invention to be: by the duty of both sides heat storage tank in the outer changement control stove that is provided with of body of heater, its duty is divided into A, the B two states hockets, the both sides heat storage tank hocket the primary air preheating and the smoke evacuation accumulation of heat: when a side is in the primary air preheat mode, for example during A condition, secondary combustion air spout in this side burning groove is closed, control simultaneously from the primary air passage of heat storage tank bottom and enter the primary air amount of burning with combustion gas mixing the burning groove through preheating, make its deficiency so that combustion gas is fully burnt, when the high-temperature fuel gas that is in the imperfect combustion state enters the burning groove on opposite side heat storage tank top through burner hearth, replenish air by the secondary combustion air spout that is provided with on this burning groove outer wall, with this unburnt combustion gas mixing and make it fully burn, after the heat storage that high-temp waste gas is filled with this side heat storage tank middle part again carries out heat exchange, enter the outer changement of stove through smoke discharging pipe, import chimney by air-introduced machine and discharge; When duty is converted to the B state, oppositely repeat last process.Under A, B two states, all be full of unburnt high-temperature fuel gas in the burner hearth with strong reducing property matter, the equivalent proportioning of primary air and combustion gas is advisable with 0.2～0.8, reaches the purpose of oxidation-free metal heating.
The present invention has outstanding substantive distinguishing features and at first is not use the inert gas shielding that prevents burning in the prior art, and high-temperature fuel gas directly heats metal; Secondly, industrial furnace simple structure of the present invention, technology is also simple.
The obvious improvement that the present invention has at first is to adopt the direct heating of metal material of high-temperature fuel gas, energy savings, and adopt the heat storage tank structure to make the waste heat in the waste gas almost all obtain to reclaim, both reduced heat loss, reduce product cost, also reduce atmosphere pollution simultaneously.
Embodiments of the invention are as shown in drawings:
Fig. 1 is to use the embodiment body of heater schematic cross section of high heating value combustion gas;
Fig. 2 is to use the embodiment body of heater schematic cross section of fuel gas with low heat value.
Number in the figure is represented:
1, material, 2, body of heater, 3, burning groove, 4, secondary combustion air spout, 5, high heating value combustion gas spout, 6, heat storage, 7, primary air passage/discharge flue, 8, fuel gas with low heat value passage/discharge flue, 9 changements.
In conjunction with implementing accompanying drawing the present invention is specified:
Industrial oxidation-free metal furnace of the present invention as depicted in figs. 1 and 2.
Fig. 1 is the organigram that industrial oxidation-free metal furnace of the present invention uses the high heating value combustion gas, comprise body of heater 2, along both sides furnace wall direction at least one pair of heat storage tank is set in the body of heater bottom, the heat storage tank bottom is primary air passage/discharge flue 7, heat storage 6 is filled at the heat storage tank middle part, heat storage tank top is burning groove 3, and high heating value combustion gas spout 5 and secondary combustion air spout 4 are set on burning groove 3 lateral walls; The combustion gas spout 5 of present embodiment, the external outer changement 9 of body of heater that is arranged on of the connection pipeline of primary air passage 7 and secondary combustion air spout 4.
Fig. 2 is the organigram that industrial oxidation-free metal furnace of the present invention uses fuel gas with low heat value, along both sides furnace wall direction two pairs of heat storage tanks are set in body of heater 2 bottoms, the top burning groove 3 of two heat storage tanks of body of heater homonymy is shared burning groove 3, the combustion gas spout that is provided with on 3 liang of lateral walls of burning groove on heat storage tank top, body of heater 2 both sides is arranged on the blast tube 8 of a pair of heat storage tank bottom of the body of heater both sides that are placed in, and another bottom to the heat storage tank of the body of heater both sides that are placed in is a primary air passage 7; The primary air passage 7 of two pairs of heat storage tank bottoms and blast tube 8 also are discharge flues in the accumulation of heat cycle; The primary air passage 7 of present embodiment, secondary combustion air spout 4 and the blast tube 8 external outer changements 9 of body of heater that are arranged on.Present embodiment also carries out preheating to combustion gas, and therefore can be suitable for fuel gas with low heat value does fuel.
The heat storage 6 that the present invention fills at heat storage tank middle part be spherical or cellular, heat storage 6 by heat-resistant net its underpart support and with the gas passage 7 and 8 of heat storage tank bottom separately, the gap of gas communication is arranged in heat-resistant net and heat storage.Heat-resistant net of the present invention is similar to fire grate, though do not show among the figure, is easy to the imagination.
Adopt the oxidation-free metal heating process of non-oxidation industrial furnace of the present invention to be: by the duty of both sides heat storage tank in the outer changement that the is provided with 9 control stoves of body of heater, its duty is divided into A, the B two states hockets, the both sides heat storage tank hocket the primary air preheating and the smoke evacuation accumulation of heat: when a side is in the air preheat state, for example during A condition, secondary combustion air spout 4 in this side burning groove is closed, control simultaneously from the primary air passage 7 of heat storage tank bottom and enter the primary air amount of burning with combustion gas mixing the burning groove 3 through preheating, make its deficiency so that combustion gas is fully burnt, after the high-temperature fuel gas that is in the imperfect combustion state adds thermal material 1 through burner hearth, and when entering the burning groove 3 on opposite side heat storage tank top, replenish air by the secondary combustion air spout 4 that is provided with on these burning groove 3 outer walls, with this unburnt combustion gas mixing and make it fully burn, after the heat storage 6 that high-temp waste gas is filled with this side heat storage tank middle part again carries out heat exchange, enter the outer changement 9 of stove through discharge flue 7 and 8, import chimney by air-introduced machine and discharge; When duty is converted to the B state, oppositely repeat last process.Under A, B two states, all be full of unburnt high-temperature fuel gas in the burner hearth with strong reducing property matter, reach the purpose of oxidation-free metal heating.Two kinds of duty change-over periods of A, B can be 30～300 seconds.
Industrial furnace of the present invention adopts the heat storage tank structure can form face formula fire curtain at the burning groove 3 upper opening places on heat storage tank top, can evenly heat metalliferous material.Unburnt combustion gas has strong reducing property, can be used for the brightness heat treatment technology of metal.
Claims (6)
1, a kind of non-oxidation industrial furnace, comprise body of heater, combustion air pipeline, gas pipeline, it is characterized in that along both sides furnace wall direction at least one pair of heat storage tank being set in the body of heater bottom, the heat storage tank bottom is combustion air pipeline/smoke discharging pipe, heat storage is filled at the heat storage tank middle part, heat storage tank top is burning groove, and combustion gas spout and secondary combustion air spout are set on the burning groove lateral wall; Gas pipeline, combustion air pipeline and the secondary combustion air pipeline changement outer with being arranged on body of heater links.
2, industrial furnace as claimed in claim 1, it is characterized in that along both sides furnace wall direction two pairs of heat storage tanks being set in the body of heater bottom, the top burning groove of two heat storage tanks of body of heater homonymy is shared burning groove, the combustion gas spout that is provided with on burning groove two lateral walls on heat storage tank top, body of heater both sides is arranged on the gas pipeline of a pair of heat storage tank bottom of the body of heater both sides that are placed in, and another bottom to the heat storage tank of the body of heater both sides that are placed in is the combustion air pipeline; The combustion air pipeline and the gas pipeline of two pairs of heat storage tank bottoms are smoke discharging pipes in the accumulation of heat cycle.
3, industrial furnace as claimed in claim 1, it is characterized in that the heat storage of filling in the heat storage tank is spherical or cellular, heat storage support in its underpart by heat-resistant net and with the gas passage of heat storage tank bottom separately, the gap of gas communication is arranged in heat-resistant net and heat storage.
4, a kind of oxidation-free metal heating process that uses as claim 1 or 2 or 3 described non-oxidation industrial furnaces, it is characterized in that being divided into A, B state by the duty of both sides heat storage tank in the outer changement control stove that is provided with of body of heater, the coal gas that hockets, primary air preheating and auxiliary air spray into and make combustion gas completing combustion, smoke evacuation accumulation of heat; When a side is in primary air, gas preheating state, control enters the primary air amount of burning with combustion gas mixing in the burning groove through preheating, make its deficiency so that combustion gas is fully burnt, when the high-temperature fuel gas that is in the imperfect combustion state enters the burning groove on opposite side heat storage tank top through burner hearth, replenish air by the secondary combustion air spout that is provided with on this burning groove outer wall, mix with it and make it fully burn, after waste gas carries out heat exchange with heat storage again, enter the outer changement of stove through smoke discharging pipe, import chimney by air-introduced machine and discharge; When exchange system makes the duty conversion, oppositely repeat last process.
5, a kind of oxidation-free metal heating process that uses non-oxidation industrial furnace as claimed in claim 4 is characterized in that combustion gas burn incompletely in burner hearth, makes furnace gas have nonoxidizing atmosphere, and the equivalent proportioning of air and fuel is between 0.2～0.8.
6, a kind of oxidation-free metal heating process that uses non-oxidation industrial furnace as claimed in claim 4 is characterized in that two kinds of duty change-over periods of A, B can be 30～300 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00100624 CN1240985C (en) | 2000-01-25 | 2000-01-25 | Industrial oxidation-free metal furnace and technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00100624 CN1240985C (en) | 2000-01-25 | 2000-01-25 | Industrial oxidation-free metal furnace and technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1307220A true CN1307220A (en) | 2001-08-08 |
| CN1240985C CN1240985C (en) | 2006-02-08 |
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ID=4575573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00100624 Expired - Lifetime CN1240985C (en) | 2000-01-25 | 2000-01-25 | Industrial oxidation-free metal furnace and technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1240985C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290201A (en) * | 2012-02-24 | 2013-09-11 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103954123A (en) * | 2014-05-13 | 2014-07-30 | 安徽千禧精密轴承制造有限公司 | Controlled atmosphere heating furnace |
| CN104913637A (en) * | 2015-06-17 | 2015-09-16 | 海南大学 | Sintering furnace |
-
2000
- 2000-01-25 CN CN 00100624 patent/CN1240985C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290201A (en) * | 2012-02-24 | 2013-09-11 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103290201B (en) * | 2012-02-24 | 2015-07-22 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103954123A (en) * | 2014-05-13 | 2014-07-30 | 安徽千禧精密轴承制造有限公司 | Controlled atmosphere heating furnace |
| CN103954123B (en) * | 2014-05-13 | 2015-11-18 | 安徽千禧精密轴承制造有限公司 | A kind of controlled atmosphere heating furnace |
| CN104913637A (en) * | 2015-06-17 | 2015-09-16 | 海南大学 | Sintering furnace |
| CN104913637B (en) * | 2015-06-17 | 2017-02-01 | 海南大学 | Sintering furnace |
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| Publication number | Publication date |
|---|---|
| CN1240985C (en) | 2006-02-08 |
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| C10 | Entry into substantive examination | ||
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing North Island Energy Technology Co., Ltd. Assignor: Hou Changlian Contract fulfillment period: 2006.4.8 to 2020.1.24 Contract record no.: 2008110000112 Denomination of invention: Industrial oxidation-free metal furnace and technology Granted publication date: 20060208 License type: Exclusive license Record date: 20081111 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.4.8 TO 2020.1.24; CHANGE OF CONTRACT Name of requester: BEIJING BEIDAO ENERGY TECHNOLOGY CO., LTD. Effective date: 20081111 |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Beijing North Island Energy Technology Co., Ltd. Assignor: Hou Changlian Contract record no.: 2008110000112 Date of cancellation: 20110704 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060208 |