CN211445797U - Dry-method purification waste heat recovery system for high-temperature coal gas of HIsmelt smelting reduction furnace - Google Patents
Dry-method purification waste heat recovery system for high-temperature coal gas of HIsmelt smelting reduction furnace Download PDFInfo
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- CN211445797U CN211445797U CN201921595027.4U CN201921595027U CN211445797U CN 211445797 U CN211445797 U CN 211445797U CN 201921595027 U CN201921595027 U CN 201921595027U CN 211445797 U CN211445797 U CN 211445797U
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Abstract
The utility model relates to a HIsmelt smelting reduction furnace high temperature coal gas dry process purifies waste heat recovery system includes vaporization cooling flue, coal gas mixing temperature regulating room, cyclone, high temperature sack cleaner, waste heat device, fan. High-temperature coal gas of the HIsmelt reduction furnace is subjected to waste heat recovery through a vaporization cooling flue and is cooled to reach 800-900 ℃, the high-temperature coal gas enters a coal gas mixing temperature-regulating room to be mixed with low-temperature coal gas pumped by low-temperature return air, the mixture enters a cyclone dust collector to be subjected to primary dust removal, then the coal gas enters a high-temperature bag dust collector, and after fine dust removal, the smoke concentration is less than 10mg/Nm3And the clean coal gas after two-stage dust removal enters a waste heat device for waste heat recovery, and the temperature is reduced to 200 ℃ for users and field use. The utility model discloses the flow is smooth and easy, has avoided waste heat device to glue the sediment scale deposit, improves waste heat device heat exchange efficiency, increases life, adopts the high temperature sack cleaner to purify coal gas, has saved the water resource.
Description
Technical Field
The utility model relates to a HIsmelt smelting reduction furnace high temperature coal gas purification waste heat recovery system in the field of dust removal of pyrometallurgical industry, in particular to a HIsmelt smelting reduction furnace high temperature coal gas dry purification waste heat recovery system.
Background
The HIsmelt smelting reduction furnace can generate high-temperature coal gas in the smelting process. The temperature of the high-temperature coal gas can reach more than 1500 ℃, the high-temperature coal gas contains a large amount of sensible heat, and the coal gas also contains a large amount of sticky iron slag particles, so that energy waste can be caused if the high-temperature coal gas is not treated, and the use of subsequent users is influenced.
The existing common system has a wet method, and the smoke temperature entering the waste heat device in the wet method system is too high and reaches 800 ℃, so that slag particles in a molten state are mixed in the smoke and can be bonded on the waste heat device, the heat exchange efficiency of the waste heat device is low, and the energy waste is caused; and wet dedusting can cause water resource waste and relatively lower smoke dust removal rate.
In view of the problems of the high-temperature coal gas purification and waste heat recovery system of the conventional HIsmelt smelting reduction furnace, the inventor of the invention actively researches and innovates to create a novel high-temperature coal gas dry purification and waste heat recovery process of the HIsmelt smelting reduction furnace with a novel structure, and can improve the high-temperature coal gas purification and waste heat recovery process of the conventional HIsmelt smelting reduction furnace, so that the HIsmelt smelting reduction furnace has higher practicability.
Disclosure of Invention
The utility model aims to overcome the problems of the prior high-temperature coal gas purification waste heat recovery system and process of the HIsmelt smelting reduction furnace, and provides a new high-temperature coal gas dry purification waste heat recovery system of the HIsmelt smelting reduction furnace, which solves the technical problems that the waste heat recovery equipment has more failure rate, reduces the failure rate of the waste heat recovery equipment, ensures stable operation, increases the recovery efficiency of other heat,
the utility model discloses a further aim at, overcome the defect that current HIsmelt reduction furnace high temperature coal gas purifies waste heat recovery system exists, and provide a new HIsmelt reduction furnace high temperature coal gas dry process purifies waste heat recovery system and new technology, the technical problem that solve still contains a large amount of viscidity iron slag particles in a large amount of sensible heats of waste and the coal gas, make it increase all the other heat recovery efficiency, reduce water resource quantity, realize energy saving and emission reduction's purpose, thereby be suitable for the practicality more.
The purpose of the utility model and the technical problem thereof are realized by adopting the following technical scheme. According to the HIsmelt smelting reduction furnace high-temperature coal gas dry purification waste heat recovery system provided by the utility model, the HIsmelt smelting reduction furnace high-temperature coal gas dry purification waste heat recovery system comprises a vaporization cooling flue, a coal gas mixing temperature adjusting chamber, a cyclone dust collector, a high-temperature bag dust collector, a waste heat device, a low-temperature coal gas return pipeline and a fan, wherein the HIsmelt smelting reduction furnace is connected with the coal gas mixing temperature adjusting chamber through the vaporization cooling flue, the coal gas mixing temperature adjusting chamber is connected with the cyclone dust collector through a pipeline, the cyclone dust collector is connected with the high-temperature bag dust collector through a pipeline, the high-temperature bag dust collector is connected with the waste heat device through a pipeline, the fan is respectively connected with the coal gas mixing temperature adjusting chamber and the outlet pipeline of the waste heat device through the low-temperature coal gas return pipeline, the fan is connected with the coal gas mixing temperature adjusting chamber and the waste heat device through, the waste heat device finally supplies the coal gas to users or provides field use through pipelines. The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.
In the high-temperature coal gas dry purification waste heat recovery system for the HIsmelt smelting reduction furnace, the temperature regulating medium used for regulating the temperature of the coal gas mixing temperature regulating chamber is coal gas generated by the process.
High-temperature coal gas dry purification waste heat return of HIsmelt smelting reduction furnaceThe collecting system is characterized in that the high-temperature bag-type dust remover adopts a high-temperature filter cylinder with high temperature resistance and corrosion resistance as a fine dust removal element, and the concentration of smoke dust after fine dust removal is less than 10mg/Nm3。
The novel process of the utility model comprises the following steps:
step 1: high-temperature coal gas of the HIsmelt smelting reduction furnace passes through an evaporation cooling flue to recover waste heat and is cooled to reach the temperature of 800-900 ℃;
step 2: the high-temperature coal gas discharged from the vaporization cooling flue and the low-temperature coal gas pumped back by the low-temperature coal gas backflow air are fully mixed and adjusted in temperature by the coal gas mixing and adjusting chamber, and the temperature of the coal gas is adjusted to a value required by the process;
and step 3: the coal gas after the coal gas mixing and temperature adjustment enters a cyclone dust collector through a pipeline for primary dust removal, and large particle dust is removed;
and 4, step 4: the coal gas primarily dedusted by the cyclone deduster enters the high-temperature bag deduster through a pipeline for fine dedusting, and the high-temperature bag deduster is arranged in front of the waste heat device;
and step 3: the coal gas after temperature adjustment is subjected to fine dust removal by a high-temperature bag-type dust remover and then enters a waste heat device for waste heat recovery.
And 4, step 4: the coal gas recovered by the waste heat device can be directly used by users and field use points, and the sensible heat carried by the coal gas can be utilized to reduce the energy consumption of the users.
Compared with the prior art, the utility model obvious advantage and beneficial effect have. It has at least the following advantages:
1. the utility model discloses a low temperature coal gas reflux system and coal gas mix temperature-regulating room ensure that the temperature drops to the required temperature of technology before high temperature coal gas gets into cyclone.
2. The utility model discloses can solve waste heat device and glue the sediment problem, improve waste heat device waste heat recovery efficiency.
3. The utility model discloses a dry process dust removal technology has reduced the waste of water resource.
4. The utility model discloses prolong the life of boiler, avoided the production of turbid circulating water.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the combined structure of the present invention.
Wherein:
1: HIsmelt smelting reduction furnace 2: vaporization cooling flue
3: gas mixing temperature adjusting chamber 4: cyclone dust collector
5: 6, high-temperature bag-type dust collector: waste heat device
7: fan blower
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description of the embodiments, structures, methods, steps, features and effects of the high temperature gas dry purification waste heat recovery system of the HIsmelt reduction furnace according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, a dry purification waste heat recovery system for high-temperature coal gas of a HIsmelt reduction furnace according to a preferred embodiment of the present invention mainly includes: the system comprises a vaporization cooling flue 2, a coal gas mixing temperature adjusting chamber 3, a cyclone dust collector 4, a high-temperature bag dust collector 5, a waste heat device 6 and a fan 7; wherein: the high-temperature coal gas of the HIsmelt reduction furnace 1 is cooled through the vaporization cooling flue 2 and then is connected with the coal gas mixing temperature adjusting chamber 3 through the vaporization cooling flue 2, the coal gas mixing temperature adjusting chamber 3 is connected with the cyclone dust collector 4 through a pipeline, the cyclone dust collector 4 is connected with the high-temperature bag-type dust collector 5 through a pipeline, the high-temperature bag-type dust collector 5 is connected with the waste heat device 6 through a pipeline, the fan 7 is connected with the pipeline behind the waste heat device 6 and the coal gas mixing temperature adjusting chamber 3 to realize low-temperature coal gas backflow, and the waste heat device 6 finally supplies the coal gas to users or provides field use through the pipeline.
Referring to fig. 1, the new process of the preferred embodiment of the present invention includes the following steps:
high-temperature coal gas of the HIsmelt reduction furnace is subjected to waste heat recovery and temperature reduction through the vaporization cooling flue 2, then enters the coal gas mixing temperature adjusting chamber 3, the coal gas mixing temperature adjusting chamber 3 fully mixes high-temperature coal gas discharged from the vaporization cooling flue 2 with low-temperature coal gas pumped by low-temperature coal gas backflow air for temperature adjustment, the temperature of the coal gas is adjusted to a value required by the process, the coal gas subjected to coal gas mixing temperature adjustment enters the cyclone dust collector 4 through a pipeline for primary dust removal, and large-particle dust is removed; the coal gas which is primarily dedusted by the cyclone dust collector 4 enters a high-temperature bag dust collector 5 for fine dedusting, and the high-temperature bag dust collector 5 is arranged in front of the waste heat device 6; the high-temperature bag-type dust collector 5 adopts a high-temperature filter cylinder with high temperature resistance and corrosion resistance as a fine dust collection element, and the concentration of smoke dust after fine dust collection is less than 10mg/Nm3The clean coal gas after two-stage dust removal enters a waste heat device 6 for waste heat recovery, the temperature of the coal gas after the waste heat recovery by the waste heat device 6 is reduced to about 200 ℃, the purified coal gas is supplied to users and sites, and the sensible heat carried by the purified coal gas is utilized to reduce the energy consumption of the users.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, for example, the gas mixing temperature adjusting room can be increased or decreased according to the field situation. Although the present invention has been described in terms of the preferred embodiments, it is to be understood that the present invention is not limited to the embodiments, and any person skilled in the art can make modifications or equivalent variations to the disclosed embodiments without departing from the scope of the present invention.
Claims (3)
1. A HIsmelt smelting reduction furnace high-temperature coal gas dry purification waste heat recovery system is characterized in that: comprises a vaporization cooling flue (2), a coal gas mixing temperature regulating chamber (3), a cyclone dust collector (4), a high-temperature bag-type dust collector (5), a waste heat device (6), a low-temperature coal gas return pipeline and a fan (7), wherein the HIsmelt smelting reduction furnace (1) is connected with the coal gas mixing temperature regulating chamber (3) through the vaporization cooling flue (2), the coal gas mixing temperature regulating chamber (3) is connected with the cyclone dust collector (4) through a pipeline, the cyclone dust collector (4) is connected with the high-temperature bag-type dust collector (5) through a pipeline, the high-temperature bag-type dust collector (5) is connected with the waste heat device (6) through a pipeline, the fan (7) is respectively connected with the coal gas mixing temperature regulating chamber (3) and an outlet pipeline of the waste heat device (6) through the low-temperature coal gas return pipeline, the fan (7) is connected with the coal gas mixing temperature regulating chamber (3) and the waste heat device (6) through the low-temperature coal gas return pipeline, low-temperature gas reflux is realized, and the waste heat device (6) finally supplies the gas to users or provides field use through pipelines.
2. The dry purification waste heat recovery system for high-temperature coal gas of the HIsmelt reduction furnace according to claim 1, which is characterized in that: the temperature adjusting medium for adjusting the temperature of the gas mixing temperature adjusting chamber (3) is gas generated by the process.
3. The HIsmelt smelting reduction furnace high-temperature gas dry purification waste heat recovery system according to claim 1, wherein the high-temperature bag dust collector (5) adopts a high-temperature resistant and corrosion resistant high-temperature filter cylinder as a fine dust removal element, and the concentration of smoke dust after fine dust removal is less than 10mg/Nm3。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110684877A (en) * | 2019-09-24 | 2020-01-14 | 北京博鹏北科科技有限公司 | Dry-method purification waste heat recovery system and new process for high-temperature coal gas of HIsmelt smelting reduction furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110684877A (en) * | 2019-09-24 | 2020-01-14 | 北京博鹏北科科技有限公司 | Dry-method purification waste heat recovery system and new process for high-temperature coal gas of HIsmelt smelting reduction furnace |
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