CN105486096A - Waste-heat utilization method and device for indirect heating type sintering system - Google Patents
Waste-heat utilization method and device for indirect heating type sintering system Download PDFInfo
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Abstract
The invention belongs to the field of production of aluminum oxide, and particularly relates to a waste-heat utilization method and device for an indirect heating type sintering system. The device comprises a combustor, a raw material preheater, a gas-gas heat exchanger, gas-water heat exchangers, a flash evaporator, a saturated water circulating pump and pipelines used for enabling the devices to communicate with each other. High-temperature flue gas exhausted by the combustor is used to heat low-temperature water by the aid of the gas-water heat exchangers; saturated steam of 0.1MPa-8.6MPa is obtained, and the flue gas emission temperature is reduced; at the same time, the high-temperature flue gas can be used together with high-temperature tail gas generated in a kiln for preheating raw materials entering the kiln; and the high-temperature flue gas can also be used together with the high-temperature tail gas generated in the kiln for preheating combustion-supporting air or a gas fuel required by the combustor. According to the device and the method, part of the heat of the combustion flue gas and the tail gas in the kiln can be recovered effectively; saturated steam is obtainedand supplied for the whole factory; the energy utilization efficiency of the whole sintering system is improved; the production cost is reduced; and at the same time, the temperature of the flue gas or the tail gas can also be reduced, and dust collection treatment and discharging are facilitated.
Description
Technical field
The invention belongs to the production field of aluminium oxide, be specially a kind of residual-heat utilization method and device of indirect heating type sintering system.
Background technology
In the production and other industrial processes of aluminium oxide, under some specific process specifications, indirect heating type sintering system need be used to heat material, and this kind of heating system can ensure that heating object material is in an enclosure space, from the pollution of exogenous impurity.But the heat exchange efficiency of this kind of mode of heating is lower, by a large amount of high-temp combustion flue gas of generation and kiln inner exhaust gas, if do not carried out waste heat recovery to it, will the waste of large energy be caused, increasing energy resource consumption and the production cost of whole production system; Meanwhile, if do not carry out cooling process to above-mentioned flue gas or tail gas, also difficulty will be caused to its qualified discharge.
Summary of the invention
In order to solve the problem, the residual-heat utilization method of a kind of indirect heating type sintering system provided by the invention and device, its objective is the partial heat reclaiming gas fume of combustion chamber and kiln inner exhaust gas, both the raw material that preheating enters kiln had been can be used to, also can be used to combustion gas or combustion air that preheating enters combustion chamber, simultaneously can also by preparing saturation water or saturated vapor with water at low temperature heat exchange, for other technological process of full factory.In addition, the temperature of above-mentioned flue gas and tail gas also can be made to reduce by heat exchange, be beneficial to gather dust further process and discharge.
Technical scheme of the present invention is:
A residual-heat utilization method for indirect heating type sintering system, comprises the steps:
(1) high-temperature flue gas that combustion chamber of kiln is discharged delivers to air-water heat exchanger through pipeline, heat exchange is carried out wherein with water at low temperature, own temperature is reduced while heating water to 0.1MPa ~ 8.6MPa saturation state, enter next step operation and continue utilization or emptying after gathering dust, saturation water is then sent to other technological process and is utilized or enter flash vessel and saturation water circulating pump generation 0.1MPa ~ 8.6MPa saturated vapor thereof by pipeline, sends to other technological process and utilizes;
(2) tail gas that kiln inside is discharged delivers to raw material preheater through pipeline, carry out heat exchange with entering the raw material before kiln or enter the combustion air before combustion chamber or enter the gaseous fuel before combustion chamber wherein, raw material or combustion air or gaseous fuel are heated up, reduce own temperature simultaneously, enter next step operation and continue utilization or emptying after gathering dust, raw material after preheating or combustion air or gaseous fuel then enter in kiln or combustion chamber, according to operating mode needs, the high-temperature flue gas that extraction section combustion chamber is discharged mixes common waste heat raw material or combustion air or gaseous fuel with kiln tail gas, to improve preheat temperature.
The residual-heat utilization method of described indirect heating type sintering system, the high-temperature flue-gas that combustion chamber is discharged is 400 DEG C ~ 1200 DEG C, the exhaust temperature that kiln inside is discharged is 120 DEG C ~ 1200 DEG C, and water at low temperature generates saturation water or the saturated vapor of 0.1MPa ~ 8.6MPa by air-water heat exchanger heating.
The residual-heat utilization method of described indirect heating type sintering system, the gas fume of combustion chamber after air-water heat exchanger, raw material preheater heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.
The residual-heat utilization method of described indirect heating type sintering system, the kiln inner exhaust gas after raw material preheater heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.
The residual-heat utilization method of described indirect heating type sintering system, the tail gas that kiln inside is discharged delivers to raw material preheater through pipeline, gas heat exchanger, carry out heat exchange with entering the raw material before kiln or enter the combustion air before combustion chamber or enter the gaseous fuel before combustion chamber wherein, raw material or combustion air or gaseous fuel are heated up, reduce own temperature simultaneously, enter next step operation and continue utilization or emptying after gathering dust, raw material after preheating or combustion air or gaseous fuel then enter in kiln or combustion chamber, according to operating mode needs, the high-temperature flue gas that extraction section combustion chamber is discharged mixes common waste heat raw material or combustion air or gaseous fuel with kiln tail gas, to improve preheat temperature.
The residual-heat utilization method of described indirect heating type sintering system, the kiln inner exhaust gas after raw material preheater, gas heat exchanger heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.
The residual-heat utilization method of described indirect heating type sintering system, the fresh air after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or directly enters the combustion chamber of indirect heating type sintering system as combustion air.
The residual-heat utilization method of described indirect heating type sintering system, the gaseous fuel after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or burn in the combustion chamber that directly enters indirect heating type sintering system.
The residual-heat utilization method of described indirect heating type sintering system, the 0.1MPa ~ 8.6MPa saturation water generated through air-water heat exchanger heat exchange or saturated vapor, go other heat-exchange system to continue heat up or go other technological process to utilize.
The residual-heat utilization method of described indirect heating type sintering system, the raw material after the heat exchange of raw material preheater heats up, go other pre-heating system to continue preheating or directly enter in kiln to heat.
The residual heat using device of the indirect heating type sintering system that described method is special, this device comprises: combustion chamber, air-water heat exchanger, flash vessel, saturation water circulating pump, raw material preheater, and concrete structure is as follows:
Gas fume of combustion chamber outlet conduit is connected to air-water heat exchanger air inlet, its flue gas connecting pipe establish arm to be connected with raw material preheater, air-water heat exchanger saturation water outlet conduit is connected to flash vessel, be connected with pipeline between flash vessel with saturation water circulating pump, the entrance point of saturation water circulating pump and the saturation water outlet of flasher base, the port of export of saturation water circulating pump communicates with the saturation water entrance point of air-water heat exchanger, forms the saturation water self-loopa of flash vessel; Kiln offgas outlet pipeline is connected to raw material preheater, and raw material preheater is provided with the smoke inlet with combustion chamber, and the outlet of raw material preheater raw material is connected to kiln charging aperture.
The residual heat using device of described indirect heating type sintering system, also comprises gas heat exchanger, and the flue gas connecting pipe of combustion chamber establishes arm to be connected with gas heat exchanger; Kiln offgas outlet pipeline is connected to gas heat exchanger, and gas heat exchanger is provided with the smoke inlet with combustion chamber, and gas heat exchanger hot-air or gas outlet are connected to combustion chamber combustion air or fuel gas inlet.
The residual heat using device of described indirect heating type sintering system, sintering system is the agglomerating plant by combustion chamber, kiln being carried out to indirect.
The residual heat using device of described indirect heating type sintering system, in sintering system is rotary kiln or shaft (tower) furnace by heating kiln.
The residual heat using device of described indirect heating type sintering system, sintering system is one section of kiln system or more than two sections kiln system.
The residual heat using device of described indirect heating type sintering system, gas fume of combustion chamber outlet is one or more.
The residual heat using device of described indirect heating type sintering system, air-water heat exchanger is first-class heat exchanger or the above heat exchanger of two-stage.
The residual heat using device of described indirect heating type sintering system, the outlet of raw material preheater raw material is connected by chute, elephant trunk or feeding system with indirect heating type sintering system kiln charging aperture.
The residual heat using device of described indirect heating type sintering system, gas heat exchanger is first-class heat exchanger or the above heat exchanger of two-stage.
The residual heat using device of described indirect heating type sintering system, gas heat exchanger is shell-and-tube heat exchanger or heat-pipe heat exchanger.
Design philosophy of the present invention is:
The residual-heat utilization method of indirect heating type sintering system of the present invention and device, comprise the pipeline be communicated with between indirect heating type sintering system, raw material preheater, gas heat exchanger (air or gas heat-exchanger), air-water heat exchanger, flash vessel, saturation water circulating pump and equipment.In indirect heating type sintering system, the high-temperature flue gas heating water at low temperature using combustion chamber to discharge by air-water heat exchanger, preparation 0.1MPa ~ 8.6MPa saturated vapor, and reduce smog discharge temperature, high-temperature flue gas also can be used simultaneously to enter the raw material of kiln in conjunction with the common preheating of high-temperature tail gas produced in kiln or stove, high-temperature flue gas also can be used in conjunction with combustion air or gaseous fuel needed for the common preheated burning room of high-temperature tail gas produced in kiln.
Advantage of the present invention and beneficial effect are:
1, in the present invention, combustion product gases carries out heat exchange by air-water heat exchanger and water at low temperature, utilize the heat of high-temp combustion flue gas, prepare saturation water or saturated steam, for the production of flow process, effectively improve efficiency of energy utilization, reduce the energy resource consumption of full factory and production cost, also make flue gas own temperature reduce simultaneously, be beneficial to and gather dust and emission treatment.
2, in the present invention, kiln inner exhaust gas and partial combustion flue gas are by raw material preheater, gas heat exchanger and enter the raw material of kiln and combustion gas or combustion air heat exchange, the temperature of raw material, combustion gas or combustion air can be improved, reduce the heating temperature difference, reduce fuel consumption, also make tail gas and flue gas own temperature reduce simultaneously, be beneficial to and gather dust and emission treatment.
In a word, the present invention can reclaim the partial heat in above-mentioned combustion product gases, kiln inner exhaust gas effectively, prepare saturated vapor for full factory, improve the efficiency of energy utilization of whole sintering system, reduce production cost, also the own temperature of cigarette (tail) gas be can reduce simultaneously, gather dust process and discharge are beneficial to.The method flow process is simple, equipment investment is low.
Accompanying drawing explanation
Fig. 1 is the residual heat using device schematic diagram of the embodiment of the present invention 1 sintering system;
In figure: 11, kiln; 12, combustion chamber; 13, air-water heat exchanger; 14, raw material preheater; 15, flash vessel; 16, saturation water circulating pump.
Fig. 2 is the residual heat using device schematic diagram of the embodiment of the present invention 2 sintering system;
In figure: 21, one section of kiln; 22, two sections of kilns; 23, one section of combustion chamber; 24, two sections of combustion chambers; 25, air-water heat exchanger; 26, raw material preheater; 27, gas heat exchanger; 28, flash vessel; 29, saturation water circulating pump.
Detailed description of the invention
In a specific embodiment, the residual-heat utilization method of indirect heating type sintering system of the present invention, the high-temperature flue gas that combustion chamber of kiln is discharged delivers to air-water heat exchanger through pipeline, heat exchange is carried out wherein with water at low temperature, own temperature is reduced while heating water to 0.1MPa ~ 8.6MPa saturation state, enter next step operation and continue utilization or emptying after gathering dust, saturation water is then sent to other technological process and is utilized or enter flash vessel and saturation water circulating pump generation 0.1MPa ~ 8.6MPa saturated vapor thereof by pipeline, sends to other technological process and utilizes, the tail gas that kiln inside is discharged delivers to raw material preheater through pipeline, gas heat exchanger, carry out heat exchange with entering the raw material before kiln or enter the combustion air before combustion chamber or enter the gaseous fuel before combustion chamber wherein, raw material or combustion air or gaseous fuel are heated up, reduce own temperature simultaneously, enter next step operation and continue utilization or emptying after gathering dust, raw material after preheating or combustion air or gaseous fuel then enter in kiln or combustion chamber, according to operating mode needs, common waste heat raw material or combustion air or gaseous fuel can be mixed by the extraction section combustion chamber high-temperature flue gas of discharging with kiln tail gas, to improve preheat temperature.Wherein,
(1) gas fume of combustion chamber after air-water heat exchanger or raw material preheater, gas heat exchanger heat exchange cooling, enters next step operation and continues to utilize or emptying after gathering dust.
(2) the kiln inner exhaust gas after raw material preheater, gas heat exchanger heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.Raw material after the heat exchange of raw material preheater heats up, go other pre-heating system to continue preheating or directly enter in kiln to heat.
(3) fresh air after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or directly enters the combustion chamber of indirect heating type sintering system as combustion air.
(4) gaseous fuel after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or burn in the combustion chamber that directly enters indirect heating type sintering system.
Below in conjunction with accompanying drawing, the present invention is described in more detail.
Embodiment 1:
As shown in Figure 1, the residual heat using device of the present embodiment indirect heating type sintering system mainly comprises: kiln 11, combustion chamber 12, air-water heat exchanger 13, raw material preheater 14, flash vessel 15, saturation water circulating pump 16 etc., and concrete structure is as follows:
Combustion chamber 12 is positioned at the outside of kiln 11, and for the material in kiln (rotary kiln or shaft (tower) furnace) carries out indirect, combustion product gases outlet is connected to air-water heat exchanger 13 through pipeline; Air-water heat exchanger 13 is provided with water at low temperature import and saturation water outlet, and saturation water outlet is connected to flash vessel 15 through pipeline, and the saturated vapor of generation then goes to other operation by the saturated vapor outlet of flash vessel 15 through pipeline; Saturation water outlet bottom the entrance point of saturation water circulating pump 16 and flash vessel 15, the port of export of saturation water circulating pump 16 communicates with the saturation water entrance point of air-water heat exchanger 13, forms the saturation water self-loopa of flash vessel 15, increases utilization rate of waste heat; The kiln offgas outlet of kiln 11 is connected to raw material preheater 14 through pipeline, and raw material preheater 14 is provided with combustion product gases import simultaneously, is that raw material heat by tail gas and combustion product gases.
The residual-heat utilization method of the present embodiment indirect heating type sintering system is as follows:
The high-temp combustion flue gas that combustion chamber 12 is discharged delivers to air-water heat exchanger 13 through pipeline, heat exchange is carried out wherein with water at low temperature, own temperature is reduced while preparing saturation water, enter next step operation to continue to utilize or emptying after gathering dust, saturation water is then delivered to other operation through pipeline and is carried out utilizing or deliver to flash vessel 15 through pipeline and be prepared into saturated vapor and deliver to other operation and utilize; Meanwhile, combustion product gases delivers to raw material preheater 14 by bypass line, carries out heat exchange wherein with raw material, reduces own temperature while raw material temperature is raised, and enters next step operation and continues utilization or emptying after gathering dust; The interior high temperature kiln tail gas of discharging of kiln 11 delivers to raw material preheater 14 through pipeline, carries out heat exchange wherein with raw material, reduces own temperature while raw material temperature is raised, and enters next step operation and continues utilization or emptying after gathering dust; Raw material after heating are then delivered in kiln 11 by chute, elephant trunk or feeding system and are heated.In the present embodiment, the high-temperature flue-gas that combustion chamber is discharged is 400 DEG C ~ 1200 DEG C, the exhaust temperature that kiln inside is discharged is 120 DEG C ~ 1200 DEG C, water at low temperature generates saturation water or the saturated vapor of 0.1MPa ~ 8.6MPa by air-water heat exchanger heating, goes other heat-exchange system to continue heat up or go other technological process to utilize.
Embodiment 2:
As shown in Figure 2, the residual heat using device of the present embodiment indirect heating type sintering system mainly comprises combustion chamber 24, one section of kiln, 21, two sections of kilns, 23, two sections, 22, one section of combustion chamber, air-water heat exchanger 25, raw material preheater 26, gas heat exchanger 27 (air or combustion gas), flash vessel 28, saturation water circulating pump 29 etc., and concrete structure is as follows:
Combustion chamber 24, one section of 23, two sections, combustion chamber lays respectively at the outside of one section of kiln, 21, two sections of kilns 22, indirect is carried out to the material in kiln (one section of kiln, 21, two sections of kilns 22), combustion product gases (one section of gas fume of combustion chamber, two sections of gas fume of combustion chamber) is connected to air-water heat exchanger 25 through pipeline respectively, and air-water heat exchanger 25 separates a bypass line and is connected to gas heat exchanger 27 simultaneously; The saturation water outlet of being heated generation by air-water heat exchanger 25 is connected to flash vessel 28 through pipeline, and the saturated vapor of generation then goes to other operation by the saturated vapor outlet of flash vessel 28 through pipeline; Saturation water outlet bottom the entrance point of saturation water circulating pump 29 and flash vessel 28, the port of export of saturation water circulating pump 29 communicates with the saturation water entrance point of air-water heat exchanger 25, forms the saturation water self-loopa of flash vessel 28, increases utilization rate of waste heat;
One section of kiln tail gas (one section of tail gas) outlet of one section of kiln 21 is connected to raw material preheater 26 through pipeline, for raw material are heated; Two sections of kiln tail gas (two sections of tail gas) outlet of two sections of kilns 22 is connected to gas heat exchanger 27 through pipeline, gas heat exchanger 27 is provided with combustion product gases import simultaneously, is jointly heated for combustion air (or combustion gas) by tail gas and combustion product gases.
The residual-heat utilization method of the present embodiment indirect heating type sintering system is as follows:
The high-temperature flue gas that combustion chamber 24, one section of 23, two sections, combustion chamber is discharged delivers to air-water heat exchanger 25 through pipeline, heat exchange is carried out wherein with water at low temperature, own temperature is reduced while preparing saturation water, enter next step operation to continue to utilize or emptying after gathering dust, saturation water is then delivered to other operation through pipeline and is carried out utilizing or deliver to flash vessel 28 through pipeline and be prepared into saturated vapor and deliver to other operation and utilize; Meanwhile, combustion product gases delivers to gas heat exchanger 27 by bypass line, carries out heat exchange wherein with combustion air or combustion gas, reduces own temperature, enter next step operation and continue utilization or emptying after gathering dust while combustion air or fuel gas temperature are raised; One section of interior one section of kiln tail gas of discharging of kiln 21 delivers to raw material preheater 26 through pipeline, carries out heat exchange wherein, reduces own temperature while raw material temperature is raised, enter next step operation and continue utilization or emptying after gathering dust with raw material; Raw material after heating are then delivered in kiln 21 by chute, elephant trunk or feeding system and are heated; Two sections of kiln tail gas of discharging in two sections of kilns 22 deliver to gas heat exchanger 27 through pipeline, heat exchange is carried out wherein with combustion air or combustion gas, reduce own temperature while combustion air or fuel gas temperature are raised, enter next step operation and continue utilization or emptying after gathering dust; Combustion air after heating or combustion gas are delivered to one section of combustion chamber 23 and two sections of combustion chambers 24 through pipeline and are burnt.In the present embodiment, the high-temperature flue-gas that combustion chamber is discharged is 400 DEG C ~ 1200 DEG C, the exhaust temperature that kiln inside is discharged is 120 DEG C ~ 1200 DEG C, water at low temperature generates saturation water or the saturated vapor of 0.1MPa ~ 8.6MPa by air-water heat exchanger heating, goes other heat-exchange system to continue heat up or go other technological process to utilize.
Embodiment result shows, the present invention can reclaim the partial heat in above-mentioned kiln tail gas and combustion product gases effectively, generation saturation water or saturated vapor are for full factory, reduce the energy resource consumption of full factory, save production cost, also can reduce the own temperature of cigarette (tail) to be conducive to the discharge that processes further or gather dust simultaneously.
Claims (20)
1. a residual-heat utilization method for indirect heating type sintering system, is characterized in that, comprises the steps:
(1) high-temperature flue gas that combustion chamber of kiln is discharged delivers to air-water heat exchanger through pipeline, heat exchange is carried out wherein with water at low temperature, own temperature is reduced while heating water to 0.1MPa ~ 8.6MPa saturation state, enter next step operation and continue utilization or emptying after gathering dust, saturation water is then sent to other technological process and is utilized or enter flash vessel and saturation water circulating pump generation 0.1MPa ~ 8.6MPa saturated vapor thereof by pipeline, sends to other technological process and utilizes;
(2) tail gas that kiln inside is discharged delivers to raw material preheater through pipeline, carry out heat exchange with entering the raw material before kiln or enter the combustion air before combustion chamber or enter the gaseous fuel before combustion chamber wherein, raw material or combustion air or gaseous fuel are heated up, reduce own temperature simultaneously, enter next step operation and continue utilization or emptying after gathering dust, raw material after preheating or combustion air or gaseous fuel then enter in kiln or combustion chamber, according to operating mode needs, the high-temperature flue gas that extraction section combustion chamber is discharged mixes common waste heat raw material or combustion air or gaseous fuel with kiln tail gas, to improve preheat temperature.
2. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that, the high-temperature flue-gas that combustion chamber is discharged is 400 DEG C ~ 1200 DEG C, the exhaust temperature that kiln inside is discharged is 120 DEG C ~ 1200 DEG C, and water at low temperature generates saturation water or the saturated vapor of 0.1MPa ~ 8.6MPa by air-water heat exchanger heating.
3. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that, the gas fume of combustion chamber after air-water heat exchanger, raw material preheater heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.
4. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that the kiln inner exhaust gas after raw material preheater heat exchange cooling enters next step operation and continues utilization or emptying after gathering dust.
5. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that, the tail gas that kiln inside is discharged delivers to raw material preheater through pipeline, gas heat exchanger, carry out heat exchange with entering the raw material before kiln or enter the combustion air before combustion chamber or enter the gaseous fuel before combustion chamber wherein, raw material or combustion air or gaseous fuel are heated up, reduce own temperature simultaneously, enter next step operation and continue utilization or emptying after gathering dust, raw material after preheating or combustion air or gaseous fuel then enter in kiln or combustion chamber, according to operating mode needs, the high-temperature flue gas that extraction section combustion chamber is discharged mixes common waste heat raw material or combustion air or gaseous fuel with kiln tail gas, to improve preheat temperature.
6. according to the residual-heat utilization method of indirect heating type sintering system according to claim 5, it is characterized in that, the kiln inner exhaust gas after raw material preheater, gas heat exchanger heat exchange cooling, enters next step operation and continues utilization or emptying after gathering dust.
7. according to the residual-heat utilization method of indirect heating type sintering system according to claim 5, it is characterized in that, fresh air after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or directly enters the combustion chamber of indirect heating type sintering system as combustion air.
8. according to the residual-heat utilization method of indirect heating type sintering system according to claim 5, it is characterized in that, gaseous fuel after gas heat exchanger heat exchange heats up, goes other pre-heating system to continue preheating or burn in the combustion chamber that directly enters indirect heating type sintering system.
9. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that, 0.1MPa ~ 8.6MPa the saturation water generated through air-water heat exchanger heat exchange or saturated vapor, go other heat-exchange system to continue heat up or go other technological process to utilize.
10. according to the residual-heat utilization method of indirect heating type sintering system according to claim 1, it is characterized in that, the raw material after the heat exchange of raw material preheater heats up, go other pre-heating system to continue preheating or directly enter in kiln to heat.
The residual heat using device of the indirect heating type sintering system that the described method of one of 11. 1 kinds of claims 1 to 10 is special, it is characterized in that, this device comprises: combustion chamber, air-water heat exchanger, flash vessel, saturation water circulating pump, raw material preheater, and concrete structure is as follows:
Gas fume of combustion chamber outlet conduit is connected to air-water heat exchanger air inlet, its flue gas connecting pipe establish arm to be connected with raw material preheater, air-water heat exchanger saturation water outlet conduit is connected to flash vessel, be connected with pipeline between flash vessel with saturation water circulating pump, the entrance point of saturation water circulating pump and the saturation water outlet of flasher base, the port of export of saturation water circulating pump communicates with the saturation water entrance point of air-water heat exchanger, forms the saturation water self-loopa of flash vessel; Kiln offgas outlet pipeline is connected to raw material preheater, and raw material preheater is provided with the smoke inlet with combustion chamber, and the outlet of raw material preheater raw material is connected to kiln charging aperture.
12., according to the residual heat using device of indirect heating type sintering system according to claim 11, is characterized in that, also comprise gas heat exchanger, the flue gas connecting pipe of combustion chamber establishes arm to be connected with gas heat exchanger; Kiln offgas outlet pipeline is connected to gas heat exchanger, and gas heat exchanger is provided with the smoke inlet with combustion chamber, and gas heat exchanger hot-air or gas outlet are connected to combustion chamber combustion air or fuel gas inlet.
13. according to the residual heat using device of indirect heating type sintering system according to claim 11, and it is characterized in that, sintering system is the agglomerating plant by combustion chamber, kiln being carried out to indirect.
14. according to the residual heat using device of indirect heating type sintering system according to claim 11, and it is characterized in that, in sintering system is rotary kiln or shaft (tower) furnace by heating kiln.
15. according to the residual heat using device of indirect heating type sintering system according to claim 11, and it is characterized in that, sintering system is one section of kiln system or more than two sections kiln system.
16., according to the residual heat using device of indirect heating type sintering system according to claim 11, is characterized in that, gas fume of combustion chamber outlet is one or more.
17. according to the residual heat using device of indirect heating type sintering system according to claim 11, and it is characterized in that, air-water heat exchanger is first-class heat exchanger or the above heat exchanger of two-stage.
18., according to the residual heat using device of indirect heating type sintering system according to claim 11, is characterized in that, the outlet of raw material preheater raw material is connected by chute, elephant trunk or feeding system with indirect heating type sintering system kiln charging aperture.
19. according to the residual heat using device of indirect heating type sintering system according to claim 11, and it is characterized in that, gas heat exchanger is first-class heat exchanger or the above heat exchanger of two-stage.
20. according to the residual heat using device of indirect heating type sintering system according to claim 19, and it is characterized in that, gas heat exchanger is shell-and-tube heat exchanger or heat-pipe heat exchanger.
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| CN107014203A (en) * | 2017-05-30 | 2017-08-04 | 大石桥市宝鼎耐火材料有限公司 | Environment friendly magnesium carbon brick heat treatment kiln and its processing method |
| CN110747354A (en) * | 2019-11-07 | 2020-02-04 | 江西飞宇新能源科技有限公司 | Lithium extraction system and method for lithium china stone, lithium-containing mother liquor and filling agent |
| CN111442653A (en) * | 2020-04-20 | 2020-07-24 | 华中科技大学 | Domestic porcelain continuous production system and method based on waste heat graded utilization |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107014203A (en) * | 2017-05-30 | 2017-08-04 | 大石桥市宝鼎耐火材料有限公司 | Environment friendly magnesium carbon brick heat treatment kiln and its processing method |
| CN110747354A (en) * | 2019-11-07 | 2020-02-04 | 江西飞宇新能源科技有限公司 | Lithium extraction system and method for lithium china stone, lithium-containing mother liquor and filling agent |
| CN111442653A (en) * | 2020-04-20 | 2020-07-24 | 华中科技大学 | Domestic porcelain continuous production system and method based on waste heat graded utilization |
| CN111442653B (en) * | 2020-04-20 | 2021-11-19 | 华中科技大学 | Domestic porcelain continuous production system and method based on waste heat graded utilization |
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