CN2705464Y - High temperature hot-air furnace - Google Patents
High temperature hot-air furnace Download PDFInfo
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- CN2705464Y CN2705464Y CN 200320127570 CN200320127570U CN2705464Y CN 2705464 Y CN2705464 Y CN 2705464Y CN 200320127570 CN200320127570 CN 200320127570 CN 200320127570 U CN200320127570 U CN 200320127570U CN 2705464 Y CN2705464 Y CN 2705464Y
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Abstract
The utility model discloses a kind of high temperature hot-blast furnace, belong to the ironmaking field.Be used to solve the problem of the existing hotblast stove wind-warm syndrome of further raising with the arbitrary temp that satisfies the blast furnace needs.Its principal character is, has set up the outer heating unit to coal gas and the two preheatings of combustion air in the hotblast stove outside; This device comprises burner, combustion chamber, regenerator, reversing valve, and an end links to each other with coal gas, smoke evacuation tracheae with the air of need preheating, and the other end and hotblast stove primary air pipe are connected with Gas mixing valve on the main gas pipe; Temperature reaches 500-800 ℃ air and coal gas and sneaks into hotblast stove primary air pipe and gas pipe through Gas mixing valve after preheating; Mixed air and gas temperature height can significantly improve hot blast temperature.Can be blast furnace hot blast more than 1300 ℃ is provided.
Description
Technical field
The utility model belongs to the ironmaking field, particularly relates to a kind of high temperature hot-blast furnace.
Background technology
Blast-furnace smelting needs the enough high temperature hot blast, and hotblast stove provides the indispensable device of this hot blast.The hotblast stove that current industrial is used is made up of furnace shell, refractory lining, combustion unit, heat storage and channel system.Be subjected to the restriction of calorific value of fuel and fuel and combustion air initial temperature, the common wind pushing temperature of existing hotblast stove generally about 1000-1200 ℃, can not adapt to higher processing requirement.What pay particular attention to is that under so high temperature, the raising again of temperature is very difficult; Simultaneously, even only improve tens degree, also be very useful to smelting process.Therefore, the someone has proposed to increase to use on the top, combustion chamber of hotblast stove to improve furnace temperature through the fuel of preheating and the method for combustion air auxiliary burning nozzle; Usually from the basic purpose of UTILIZATION OF VESIDUAL HEAT IN, interchanger is set at the flue place improves coal gas and the air themperature that enters burner besides, obtained the positively effect that improves hot blast temperature.But the weak point of first method is: 1. because it is it is perforate on the sidewall of the high-temperature zone of hotblast stove, bigger to the intensity effect of hotblast stove housing, and incompatible the transformation.2. because its installation site is higher, establishes the installation of each and safeguard extremely inconvenient.3. because there is the problem that the interior useful space utilization ratio of stove is lower and leak out easily in Cowper stove, have the tendency that is replaced by top combustion stove, therefore, applying also of aforesaid method more and more is restricted.4. if attempt aforesaid method is applied to top combustion stove, get the uniform distribution that entraining air stream will influence the pressure field its combustion chamber in, the nonuniform heating of initiation heat storage and cause the undesirable of final hot blast temperature.As for second method, from energy-conservation angle, its effect is relatively buried and is thought, but, when being the angle of primary and foremost purpose to improve the hot blast temperature that hotblast stove produced, it is a kind of limited improvement, does not reach the purpose that increases substantially hot blast temperature.
Summary of the invention
The purpose of this utility model, be to provide a kind of wind-warm syndrome higher, more adapt to transform, safer, installation and easy to maintenance, efficient is higher, the high temperature hot-blast furnace that has wide range of applications.
Basic design of the present utility model is, be provided with the outer heating unit that is exclusively used in the two preheatings that increase substantially the coal gas that mixes hotblast stove body main burner and combustion air temperature in the hotblast stove body exterior, coal gas and combustion air that need are mixed preheat, send into the mixed coal gas of hotblast stove body main burner and the temperature of combustion air with raising, and then improved theoretical combustion temperature and finally obtained the hot blast that temperature significantly improves.
The technical solution adopted in the utility model is:
A kind of high temperature hot-blast furnace, comprise furnace shell, refractory lining, combustion unit, heat storage, reversing valve and tubing system, wherein, be provided with in the hotblast stove outside to be exclusively used in and increase substantially the coal gas that mixes the hotblast stove main burner and the outer heating unit of combustion air temperature; Should link to each other with described hotblast stove main burner with the primary air pipe by main gas pipe by outer heating unit.
When preheating temperature at 800 ℃-900 ℃ even below 1000 ℃ the time, outer heating unit can adopt the heat exchanger of non-stop run, this device can adopt the basic structure of the heat exchanger of similar production superheated vapour in the thermal power generation unit.Along with the generation of novel high performance material, under the situation that adopts this heat exchanger, it also is possible further improving Heating temperature.The heat exchanger of described non-stop run comprises combustion chamber, burner and comprises the coal gas heat storage and the heat storage group of air heat storage, wherein, described coal gas heat storage and air heat storage are co-located in the same combustion chamber or divide and be in the separate combustion chamber.
When the preheating temperature of needs more than 900 ℃ even 1000 ℃ the time, outer heating unit can also be a kind of heat exchanger with public combustion chamber and a plurality of heat storage groups, such device will be compacter, more practical and investment still less.Described combustion chamber with heat exchanger of public combustion chamber and a plurality of heat storage groups is provided with burner, described heat storage group comprises a plurality of air heat storage groups and a plurality of coal gas heat storage group, wherein, described a plurality of heat storage group is parallel with one another by the tubing system one that pipeline forms, two ends at each pipeline parallel with one another are equipped with reversing valve, one end of described tubing system one communicates with the combustion chamber, and the other end communicates with the smoke evacuation tracheae; Described each air heat storage group is in parallel mutually by tubing system two in addition, one end of this tubing system two links to each other with treating the preheated air house steward, the other end links to each other with the primary air pipe of hotblast stove body main burner, is equipped with reversing valve at the two ends of each pipeline parallel with one another of described tubing system two; Described each coal gas heat storage group is in parallel mutually by tubing system three in addition, one end of this tubing system three links to each other with treating the preheating gas house steward, the other end links to each other with the main gas main of hotblast stove body main burner, is equipped with reversing valve at the two ends of each pipeline parallel with one another of described tubing system three.
In two media, require lower the time as a kind of pre-heating temperature of medium, outer heating unit can also be the associated plant with heat exchanger of the heat exchanger of public combustion chamber and a plurality of heat storage groups and non-stop run.
When adopting the heat-exchange system of alternation, because heat exchanging process hockets, the fluctuation that the temperature of its preheating will inevitably generating period, at this moment, can adopt a kind of Gas mixing valve, keep the stable of output temperature or be used for regulating output temperature, make it to meet the requirement of setting.Certainly, when adopting the heat exchanger of non-stop run, also can adopt Gas mixing valve, to obtain to the quick-adjustsing effect of the temperature of gas mixture.Described Gas mixing valve comprise reversing valve housing, this reversing valve housing that outer extension member is had a sealing function be provided with low wet inlet, High Temperature Gas inlet, mixed gas outlet and steerable, have valve plate or turnover panel positioning function, that can adjust mixture temperature by shift in position, described valve plate or turnover panel are movably set in low wet inlet, High Temperature Gas enters the mouth and the position that is connected of mixed gas outlet.
Sometimes, only require one of coal gas or combustion air are carried out preheating, at this moment, as long as heating unit is just passable outside being provided with on needing the medium channel of preheating.As for the above-mentioned outer heating unit of selecting which kind of form for use, can be according to multiple factor balance decisions such as preheating requirements.
When adopting the heat exchanger of non-stop run, adopt heat-accumulating burner also can obtain the double effects of energy-saving and environmental protection.
The beneficial effects of the utility model are: 1. under the condition that refractory materials, heat storage material and Controlling System allow, the wind pushing temperature of hotblast stove can reach the required arbitrary temp of technology, thereby can realize the optimization of the maximum of wind-warm syndrome factor in the smelting process.2. the desired temperature of coal gas and combustion air is convenient to adjust, and is easy to realize the optimum matching with the blast furnace operating mode, particularly when the heat exchanger of the similar production superheated vapour of employing.3. the air feed process of coal gas and combustion air is continuous, stable, particularly when adopting the heat exchanger of similar production superheated vapour.4. do not influence thermograde, pressure field and flow field in the hotblast stove primary chamber, help the stable smooth operation of hotblast stove.5. under the prerequisite that does not reduce thermo-efficiency, the utlity model has effect to the smelting system complementary energy.6. the utility model does not repel the basic purpose from UTILIZATION OF VESIDUAL HEAT IN, improves the initial air method of temperature by heat exchanger, and adopt the method for UTILIZATION OF VESIDUAL HEAT IN by serial connection after, also helps to reduce the size of this heating unit.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the structure diagram of high temperature hot-blast furnace embodiment one;
Fig. 2 is the structure diagram of high temperature hot-blast furnace embodiment two;
Fig. 3 is in structure diagram in the same combustion chamber for the coal gas heat exchanger of embodiment 1 China and foreign countries heating unit and air heat exchanger;
Fig. 4 is in structure diagram in the different combustion chambers for the coal gas heat exchanger of embodiment 1 China and foreign countries heating unit and air heat exchanger branch;
Fig. 5 is a kind of structure diagram of tubular heater exchhanger;
The master that Fig. 6 A, Fig. 6 B are respectively another kind of tubular heater exchhanger looks sketch and diagrammatic side views;
The master that Fig. 7 A, Fig. 7 B, Fig. 7 C are respectively the funtion part of employed a kind of Gas mixing valve 6 among the embodiment two looks sectional drawing, sectional side view and A-A direction sectional drawing;
The master that Fig. 8 A, Fig. 8 B, Fig. 8 C are respectively the funtion part of employed another kind of Gas mixing valve 6 among the embodiment two looks section sketch, A-A directional profile sketch and diagrammatic top view;
Fig. 9 is the structure diagram of the utility model embodiment three;
Figure 10 is the structure diagram with heat exchanger 20 of public combustion chamber and a plurality of heat storage groups.
Embodiment
Fig. 1 is the structure diagram of embodiment one of the present utility model.Wherein, the 1st, a kind of traditional hotblast stove, it can be an internal combustion type, it also can be external combustion type, can also be top ignition or other forms of, the position of the burner on this hotblast stove should determine that the position shown in the figure only is a kind of symbolistic expression according to the needs of the type of furnace, because the configuration of traditional hotblast stove belongs to prior art, just repeated no more about the details of this respect.The 2nd, a kind of pre-warmed outer heating unit is carried out in combustion gas and combustion air.Specifically, outer heating unit 2 is heat exchangers of a kind of non-stop run, and it can adopt the basic structure of vapor superheater in the thermal power generation unit.Of particular note, present embodiment is the burning-stage regenerator at traditional hotblast stove 1, the initial temperature of the coal gas that improves main burner and combustion air reach improve heat storage self temperature requirement as means, significantly improve the purpose of the wind pushing temperature of traditional hot wind furnace with realization.In the accumulation of heat phase of hotblast stove 1, after coal gas and combustion air heat up through outer heating unit 2 by pipeline 3 and 4 respectively, enter the main burner of hotblast stove 1, significantly improved theoretical combustion temperature.
Fig. 3 is in structure diagram in the same combustion chamber for the coal gas heat exchanger of embodiment 1 China and foreign countries heating unit and air heat exchanger, and the characteristics of the scheme shown in this figure are that heat exchanger coexistence to coal gas and combustion air heating is in same combustion chamber.Among the figure, the 9th, the combustion chamber, the 10th, be used to add the heat exchanger of heating gas, the 11st, be used to heat the heat exchanger of combustion air, 12 is the burner that heats to the combustion chamber, note that when this burner 12 adopts heat-accumulating burner, except can utilizing low-calorie blast furnace gas, also can obtain energy-conservation and double effects environmental protection.
Fig. 4 is in structure diagram in the different combustion chambers for the coal gas heat exchanger of embodiment 1 China and foreign countries heating unit and air heat exchanger branch; The characteristics of the scheme shown in this figure are, are to use independently combustion chamber 9 separately to the heat storage group of coal gas and combustion air heating (in be provided with heat exchanger), so that to their independent control of Heating temperature.The implication of each code name among the figure among the implication of each code name and Fig. 4 is identical.
Fig. 5 is a kind of structure diagram of tubular heater exchhanger; The master that Fig. 6 A, Fig. 6 B are respectively another kind of tubular heater exchhanger looks sketch and diagrammatic side views; They have explained two kinds of difform tubular heater exchhangers respectively.After placing them in the combustion chamber, pipe at first is heated, and also just has been heated by the gas in managing.Certainly, the specific form of heat exchanger is diversified, has not just illustrated one by one at this.
Fig. 2 is the structure diagram of embodiment two.Wherein, the 20th, a kind of coal gas and combustion air are carried out pre-warmed outer heating unit, the 6th, Gas mixing valve, 7 and 8 is respectively lower coal gas of temperature and combustion air inlet, and the implication of other label is identical with the implication of the label described in Fig. 1.Specifically, outer heating unit 20 is a kind of heat exchangers with public combustion chamber and a plurality of heat storage groups.
Figure 10 is the structure diagram with heat exchanger 20 of public combustion chamber and a plurality of heat storage groups.Among the figure, the 21st, public combustion chamber, the 22nd, in numerous valves one, 23,24,25 and 26 is respectively in a plurality of heat storage groups one, the 27th, treat the gas main of preheating, and the 28th, the gas main after the preheating, the 29th, treat the combustion air house steward of preheating, the 30th, the combustion air house steward after the preheating, the 31st, useless flue gas discharge manifold, the 32nd, the burner of combustion chamber etc.The working process of this heat exchanger is such, under original state, after reserving necessary exhaust gases passes, make all the other valves place the position of complete shut-down, after the burner 32 of combustion chamber started, the temperature of public combustion chamber 21 was able to rapid raising, at this moment, change the keying state of related valve, high-temperature flue gas can pass through any one heat storage group.If, and this heat storage group heated only by heat storage group 23 and 25; When this heat storage group is heated to the temperature of regulation, switch the passage of high-temperature flue gas, make it to enter heat storage group 24 and 26, at this moment, adjust the keying state of the related valve in coal gas and the combustion air device, make the coal gas for the treatment of preheating and combustion air enter heat storage group 23 and 25 respectively and heat, be sent to the main burner of hotblast stove then.When the temperature of heat storage group 23 and 25 descends and after the temperature of heat storage group 24 and 26 rises to the numerical value of expection, again with its mutual switching.So constantly hocket, to realize the function of thermal exchange.
In addition, in the system of preheating gas, also should consider explosion-proof problem.
Numerous discrete reversing valve among Figure 10 can be used the Several combination valve instead and replace, and for example, 2 independent valve among the figure in each circle can be replaced etc. by a two position three-way valve, and are further again, can also use the higher combination valve of integrated level etc.
The master that Fig. 7 A, Fig. 7 B, Fig. 7 C are respectively the funtion part of employed a kind of Gas mixing valve 6 among the embodiment two looks sectional drawing, sectional side view and A-A direction sectional drawing, and it has adopted the scheme of high and low temperature inlet mouth interlock control.Among the figure, the 13rd, valve casing, the 14th, the valve plate that in locating slot 15, moves, the 16th, low wet inlet, the 17th, High Temperature Gas inlet, the 18th, the outlet of gas mixture.Note that the outer extension member of the bar subordinate Yu Benfa that stretches out the valve outside of valve casing 13 and valve plate 14, should be provided with tightness system herein,, do not represent in the drawings because this belongs to routine techniques.Under shown position, High Temperature Gas inlet 17 is in full-gear, and 16 of low wet inlets are in complete shut-down.Along with by the moving down gradually of the valve plate 14 handled, the opening degree of High Temperature Gas inlet 17 just diminishes gradually, until being zero; On the contrary, along with moving down gradually of the valve plate of being handled 14, the opening degree of low wet inlet 16 just becomes big from zero gradually, until standard-sized sheet.In theory, high and low temperature gas can be realized the mixing of arbitrary proportion, like this, just can realize that the temperature of gas mixture is adjustable arbitrarily between the temperature of high and low temperature gas self.For the temperature that guarantees gas mixture meets processing requirement, can adopt temperature measuring equipment to measure the temperature of gas mixture, and according to this as the foundation that Gas mixing valve is adjusted.As for the adjustment to Gas mixing valve, except can adopting the artificial adjustment of monitoring in real time, preferably adopting with the design temperature is the autocontrol method of target, because this method belongs to mature technology in automation field, just no longer adds to have illustrated at this.
The master that Fig. 8 A, Fig. 8 B, Fig. 8 C are respectively the funtion part of employed another kind of Gas mixing valve 6 among the embodiment two looks section sketch, A-A directional profile sketch and diagrammatic top view, and it has also adopted the scheme of high and low temperature inlet mouth interlock control.Among the figure, the 19th, can make the valve plate of reciprocally swinging, the implication of other label then implication with the label shown in Fig. 7 is identical.Under shown position, High Temperature Gas inlet 17 is in full-gear, and 16 of low wet inlets are in complete shut-down.When by the valve plate 19 handled when opposite side swing, the opening degree of High Temperature Gas inlet 17 just diminishes gradually, until being zero; On the contrary, along with the swing gradually of the slide plate of being handled 19, the opening degree of low wet inlet 16 just becomes big from zero gradually, until standard-sized sheet.Valve plate 19 is to be undertaken radial and axial localizedly by its rotating shaft, specifically can realize by the axis hole and the additional structure on this of its rotating shaft; In addition, the rotating shaft of valve plate 19 also belongs to the outer extension member of this valve, also tightness system should be set between it and its valve casing 13; But,, thereby do not illustrate in the drawings in view of these all are ordinary technology.Along with the swing of valve plate 19, in theory, high and low temperature gas can be realized the mixing of arbitrary proportion.The temperature that can realize gas mixture like this, equally is adjustable arbitrarily between the temperature of high and low temperature gas self.For the temperature that guarantees gas mixture meets processing requirement, also can adopt temperature measuring equipment to measure the temperature of gas mixture, and according to this as the foundation that Gas mixing valve is adjusted.As for the adjustment to Gas mixing valve, except can adopting the artificial adjustment of monitoring in real time, preferably adopting with the design temperature is the autocontrol method of target, because this method belongs to mature technology in automation field, just no longer adds to have illustrated at this.
What need to specify a bit is, embodiment one and below in the system described in the embodiment three that will propose, also can adopt Gas mixing valve 6.When using the heat exchanger of non-stop run, adopted after the Gas mixing valve 6, can obtain the quick-adjustsing effect of the temperature of gas mixture.
Fig. 9 is the structure diagram of embodiment three.Wherein, the 33rd, a kind of coal gas and combustion air are carried out pre-warmed outer heating unit, the 6th, Gas mixing valve, 7 and 8 is respectively lower combustion gas of temperature and combustion air inlet, and the implication of other label is identical with the implication of the label described in Fig. 1.Specifically, the combination of outer heating unit 33 heat exchanger that is a kind of non-stop runs and heat friendship device with public combustion chamber and a plurality of heat storage groups.This outer heating unit 33 is specially adapted to have in the two media a kind of lower situation of Heating temperature of medium, for example, when the desired preheating temperature of coal gas less than, when equaling 800 ℃, can make its heat exchanger by non-stop run, and allow the very high combustion air of desired preheating temperature heat by heat exchange system with high temperature preheating function, to strive for obtaining best effect.
Should be fully clear and definite a bit be that the utility model allows only one of coal gas or combustion air to be heated.Because all the two is considered by heating them simultaneously in above-mentioned each enforcement, therefore, when needs only heat one of coal gas or combustion air, as long as the outer heating unit of removing in that paths that does not need to heat is just passable.
In actual applications, adopting aforesaid method to heat and the whole coal gas employing of the main burner conventional heating in flue place the whole combustion airs of main burner, may be optimum.
Claims (7)
1. high temperature hot-blast furnace, comprise furnace shell, refractory lining, combustion unit, heat storage, reversing valve and tubing system, it is characterized in that, be provided with in the hotblast stove outside to be exclusively used in and increase substantially the coal gas that mixes the hotblast stove main burner and the outer heating unit of combustion air temperature; Should link to each other with described hotblast stove main burner with the primary air pipe by main gas pipe by outer heating unit.
2. high temperature hot-blast furnace as claimed in claim 1 is characterized in that, described outer heating unit is the heat exchanger of non-stop run or has public combustion chamber and the heat exchanger of a plurality of heat storage groups.
3. high temperature hot-blast furnace as claimed in claim 1 is characterized in that, heat exchanger that described outer heating unit is non-stop run and the associated plant with heat exchanger of public combustion chamber and a plurality of heat storage groups.
4. high temperature hot-blast furnace as claimed in claim 2, it is characterized in that, the heat exchanger of non-stop run comprises combustion chamber, burner and comprises the coal gas heat storage and the heat storage group of air heat storage, wherein, described coal gas heat storage and air heat storage are co-located in the same combustion chamber or divide and be in the separate combustion chamber.
5. high temperature hot-blast furnace as claimed in claim 2, it is characterized in that, described combustion chamber with heat exchanger of public combustion chamber and a plurality of heat storage groups is provided with burner, described heat storage group comprises a plurality of air heat storage groups and a plurality of coal gas heat storage group, wherein, described a plurality of heat storage group is parallel with one another by the tubing system one that pipeline forms, two ends at each pipeline parallel with one another are equipped with reversing valve, one end of described tubing system one communicates with the combustion chamber, and the other end communicates with the smoke evacuation tracheae; Described each air heat storage group is in parallel mutually by tubing system two in addition, one end of this tubing system two links to each other with treating the preheated air house steward, the other end links to each other with the primary air pipe of hotblast stove body main burner, is equipped with reversing valve at the two ends of each pipeline parallel with one another of described tubing system two; Described each coal gas heat storage group is in parallel mutually by tubing system three in addition, one end of this tubing system three links to each other with treating the preheating gas house steward, the other end links to each other with the main gas main of hotblast stove body main burner, is equipped with reversing valve at the two ends of each pipeline parallel with one another of described tubing system three.
6. as the described high temperature hot-blast furnace of claim 1-5, it is characterized in that, on described main gas pipe and primary air pipe, be respectively equipped with Gas mixing valve.
7. high temperature hot-blast furnace as claimed in claim 6, it is characterized in that, described Gas mixing valve comprise reversing valve housing, this reversing valve housing that outer extension member is had a sealing function be provided with low wet inlet, High Temperature Gas inlet, mixed gas outlet and steerable, have valve plate or turnover panel positioning function, that can adjust mixture temperature by shift in position, described valve plate or turnover panel are movably set in low wet inlet, High Temperature Gas enters the mouth and the position that is connected of mixed gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127570 CN2705464Y (en) | 2003-12-08 | 2003-12-08 | High temperature hot-air furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320127570 CN2705464Y (en) | 2003-12-08 | 2003-12-08 | High temperature hot-air furnace |
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| CN2705464Y true CN2705464Y (en) | 2005-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200320127570 Expired - Lifetime CN2705464Y (en) | 2003-12-08 | 2003-12-08 | High temperature hot-air furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825283A (en) * | 2010-04-30 | 2010-09-08 | 山西太钢不锈钢股份有限公司 | Method for improving thermal efficiency of regenerative heating furnace |
| CN102051425A (en) * | 2011-01-13 | 2011-05-11 | 河南省豫兴热风炉工程技术有限公司 | High-wind-temperature hot blast heater with automatic air preheater |
| CN102245976B (en) * | 2008-10-16 | 2014-04-23 | 烈骑有限责任公司 | Gas fired modulating water heating appliance with dual combustion air premix blowers |
| CN103868387A (en) * | 2014-04-09 | 2014-06-18 | 介休市义安镇兴业煤化设备制造厂 | Heat accumulating type heat exchanger |
-
2003
- 2003-12-08 CN CN 200320127570 patent/CN2705464Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102245976B (en) * | 2008-10-16 | 2014-04-23 | 烈骑有限责任公司 | Gas fired modulating water heating appliance with dual combustion air premix blowers |
| CN101825283A (en) * | 2010-04-30 | 2010-09-08 | 山西太钢不锈钢股份有限公司 | Method for improving thermal efficiency of regenerative heating furnace |
| CN102051425A (en) * | 2011-01-13 | 2011-05-11 | 河南省豫兴热风炉工程技术有限公司 | High-wind-temperature hot blast heater with automatic air preheater |
| CN102051425B (en) * | 2011-01-13 | 2012-09-26 | 河南省豫兴热风炉工程技术有限公司 | High-wind-temperature hot blast heater with automatic air preheater |
| CN103868387A (en) * | 2014-04-09 | 2014-06-18 | 介休市义安镇兴业煤化设备制造厂 | Heat accumulating type heat exchanger |
| CN103868387B (en) * | 2014-04-09 | 2016-04-27 | 介休市义安镇兴业煤化设备制造厂 | A kind of heat regenerator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG PROVINCE METALLURGICAL ENGINEERING CO., L Free format text: FORMER NAME: SHANGDONG DESIGN INST OF METALLURGY |
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| CP03 | Change of name, title or address |
Address after: 250101 Shandong province Ji'nan High-tech Development Zone, Road No. 1969 Patentee after: Laiwu Tianming Metallurgical Equipment Co., Ltd. Address before: 250014 Ji'nan, Lixia District, Shandong Lixia Road, No. 134 Patentee before: Shangdong Design Inst of Metallurgy |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20050622 Effective date of abandoning: 20120822 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20050622 Effective date of abandoning: 20120822 |