CN214892663U - Smelting heat energy recovery and carbon neutralization comprehensive circulation system - Google Patents
Smelting heat energy recovery and carbon neutralization comprehensive circulation system Download PDFInfo
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- CN214892663U CN214892663U CN202121487099.4U CN202121487099U CN214892663U CN 214892663 U CN214892663 U CN 214892663U CN 202121487099 U CN202121487099 U CN 202121487099U CN 214892663 U CN214892663 U CN 214892663U
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Abstract
The utility model discloses a smelt heat recovery and carbon in and synthesize circulation system, including consuming oxygen device, boiler heat transfer system, dust collector, SCR denitrification facility, desulphurization unit and smelting furnace, boiler heat transfer system is including exhaust-heat boiler and heat exchange system, consume the oxygen device including gas combustion furnace, temperature sensor and oxygen content sensor. In the utility model, the high-temperature flue gas is separated into flue gas and steam through the boiler heat exchange system for treatment, and the separated heat energy is converted into saturated steam and is used for enterprise production; or steam is converted into electric energy through the driving generator set, the electric energy is used for enterprise electric equipment, the resource utilization rate of enterprises is improved, the energy consumption is reduced, the flue gas temperature is controlled at the safe temperature required by the dust remover through the waste heat boiler, the stability of the flue gas temperature is ensured, a stable and reliable purification environment is provided for dust removal facilities, and the electric energy steam dust remover is worthy of being widely popularized.
Description
Technical Field
The utility model relates to a flue gas recovery technical field especially relates to smelt heat recovery and carbon neutralization and synthesize circulation system.
Background
The smelting furnace is equipment for melting metal ingots and some waste metals, adding necessary alloy components, and smelting the metal ingots and the waste metals into required alloys through operations such as slag removal, refining and the like, the metal smelting industry is always covered by extensive industry, the main reasons are that the energy consumption is serious, the environmental pollution is large, along with the deep promotion of the environmental governance policy of China, enterprises of more than scale realize environmental protection and reach the standard, the comprehension is gradually improved, but the secondary waste of energy caused by the inherent basic production process route cannot be improved.
In the metal smelting industry of more than 95% in China, the heat energy utilization rate is not more than 5%, a large part of secondary heat energy is directly discharged into the atmosphere along with flue gas, so that the waste of primary energy is indirectly or directly caused, huge economic loss is caused to the society, the environmental pollution index is improved, and due to the improvement of the discharge temperature, the utilization rate of downstream environment-friendly treatment equipment and processes is low, the system maintenance rate is high, the service cycle of the equipment is short, and other adverse effects are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a smelting heat energy recovery and carbon neutralization comprehensive circulation system.
In order to achieve the above purpose, the utility model adopts the following technical scheme: smelt heat recovery and carbon in and synthesize circulation system, including consuming oxygen device, boiler heat transfer system, dust collector, SCR denitrification facility, desulphurization unit and smelting furnace, its characterized in that: the smelting furnace and the oxygen consumption device are connected with each other through a high-temperature resistant flue, the oxygen consumption device and the boiler heat exchange system are connected with each other through a high-temperature resistant flue, the boiler heat exchange system and the dust removal device are connected with each other through a pipeline, the dust removal device and the SCR denitration device are connected with each other through a pipeline, the SCR device and the desulfurization device are connected with each other through a pipeline, and the desulfurization device and the chimney are connected with each other through a pipeline;
the boiler heat exchange system comprises a waste heat boiler and a heat exchange system;
the oxygen consumption device comprises a gas combustion furnace, a temperature sensor and an oxygen content sensor.
As a further description of the above technical solution:
the oxygen consumption device mainly aims to reduce the oxygen content to 9-12% by burning more than 12% of oxygen in high-temperature flue gas in a gas combustion mode.
As a further description of the above technical solution:
the waste heat boiler efficiently recovers heat energy in the flue gas, effectively separates the heat energy, controls the temperature of the flue gas to be safe temperature required by the dust removal device, the heat exchange system is used for distributing heat sources, and the dust removal device is a normal-temperature bag type dust remover.
As a further description of the above technical solution:
the working process of the smelting heat energy recovery and carbon neutralization comprehensive circulation system comprises the following steps:
s1, oxygen consumption
High-temperature flue gas generated by the working of a smelting furnace enters a gas combustion furnace in an oxygen consumption device through a high-temperature resistant flue, the oxygen content in the high-temperature flue gas is reduced to 9-12% in a gas combustion mode, the standard emission index of the oxygen content of the flue gas meeting the national environmental protection policy requirements is met, and the oxygen content in the high-temperature flue gas can be monitored on line through an oxygen content sensor;
s2, boiler heat exchange
The flue gas and the steam are separated by the waste heat boiler, the temperature of the flue gas is controlled to be the safe temperature required by the dust remover, the stability of the temperature of the flue gas is ensured, a stable and reliable purification environment is provided for a dust removal facility, the temperature of the flue gas after heat exchange can be monitored on line by the temperature sensor, the separated heat energy can be converted into saturated steam or rated value steam required by production according to the requirements of the original smelting process and can be used for enterprise production, or the steam is converted into electric energy by driving a generator set and is used for electric equipment of enterprises;
s4, flue gas dust removal and steam recycling
The normal temperature flue gas enters the dust remover through the pipeline for flue gas dust removal treatment, a steam heat source can be distributed to a generator set or heat energy can be provided for the SCR denitration device to supplement heat through the heat exchange device, and when the catalyst for denitration treatment is diluted and put into the reaction kettle for pyrolysis, the steam heat source can be distributed to the reaction kettle through the heat exchange device to provide the heat source, so that the energy consumption of heat consumption of the reaction kettle is reduced;
s5, desulfurization, denitration treatment and discharge
The flue gas after dust removal enters an SCR denitration device through a pipeline for denitration treatment, nitrogen oxides in the flue gas are removed, the flue gas after denitration treatment enters a desulfurization device through a pipeline, sulfur oxides in the flue gas are removed, and the flue gas after denitration and desulfurization treatment is discharged from a chimney.
The utility model discloses following beneficial effect has:
1. in the utility model, high-temperature flue gas is separated into flue gas and steam through a boiler heat exchange system for treatment, and the separated heat energy can be converted into saturated steam or rated value steam required by production according to the requirement of the original smelting process and is used for enterprise production; or steam is converted into electric energy through the driving generator set, the electric energy is used for electric equipment of enterprises, hot steam can be directly sold to third-party users as required, the resource utilization rate of the enterprises is improved, the energy consumption is reduced, the waste heat energy of the existing smelting enterprises is effectively utilized, and the energy can be utilized after being fully utilized and converted.
2. The utility model discloses in, through exhaust-heat boiler with the safe temperature that flue gas temperature control needs at the dust remover, and guarantee flue gas temperature's stationarity, provide reliable and stable clean environment for dust removal facility, with the reasonable temperature section of temperature control at the dust remover, and the flue gas fluctuation is little, consequently can reform transform original high temperature bag collector into normal atmospheric temperature bag collector through this system, or other normal atmospheric temperature dust remover systems, practice thrift the maintenance degree of difficulty and the maintenance cost of dust remover by a wide margin, and whole improve equipment life, thereby for enterprise reduction in production cost, the secondary heat energy rational utilization who produces in the smelting process, reduce the flue gas emission temperature, provide environmental protection equipment utilization ratio, be worth wideling popularize.
Drawings
Fig. 1 is a system structure block diagram of a smelting heat energy recovery and carbon neutralization comprehensive circulation system provided by the utility model;
FIG. 2 is a structural block diagram of a boiler heat exchange system of the comprehensive circulation system for recovering smelting heat energy and neutralizing carbon;
FIG. 3 is a block diagram of the oxygen consumption device of the comprehensive circulation system for recovering smelting heat and neutralizing carbon;
fig. 4 is a schematic view of the system work flow of the smelting heat energy recovery and carbon neutralization comprehensive circulation system provided by the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides a method of first embodiment: the smelting heat energy recovery and carbon neutralization comprehensive circulation system comprises an oxygen consumption device, a boiler heat exchange system, a dust removal device, an SCR denitration device, a desulfurization device and a smelting furnace, wherein the smelting furnace and the oxygen consumption device are mutually connected through a high-temperature-resistant flue, the oxygen consumption device and the boiler heat exchange system are mutually connected through the high-temperature-resistant flue, the boiler heat exchange system and the dust removal device are mutually connected through a pipeline, the dust removal device and the SCR denitration device are connected through a pipeline, the SCR device and the desulfurization device are connected through a pipeline, the desulfurization device and a chimney are mutually connected through a pipeline, waste heat sources are utilized and recovered, and the waste heat sources are converted into usable energy, so that the use amount of direct energy of enterprises is reduced, the carbon emission of the enterprises is reduced from the root, and the optimal carbon neutralization index is reached;
the boiler heat exchange system comprises a waste heat boiler and a heat exchange system;
the oxygen consumption device comprises a gas combustion furnace, a temperature sensor and an oxygen content sensor.
The oxygen consumption device mainly aims to reduce the oxygen content to 9-12% by burning more than 12% of oxygen in high-temperature flue gas in a gas combustion mode.
The waste heat boiler efficiently recovers heat energy in the flue gas, effectively separates the heat energy, controls the temperature of the flue gas to be safe temperature required by the dust removal device, the heat exchange system is used for distributing heat sources, and the dust removal device is a normal-temperature bag type dust remover.
Referring to fig. 4, the present invention provides a second embodiment: the smelting heat energy recovery and carbon neutralization comprehensive circulation system comprises the following working procedures:
s1, oxygen consumption
High-temperature flue gas generated by the working of a smelting furnace enters a gas combustion furnace in an oxygen consumption device through a high-temperature resistant flue, the oxygen content in the high-temperature flue gas is reduced to 9-12% in a gas combustion mode, and the standard emission index of the oxygen content of the flue gas meeting the requirements of national environmental protection policies is met, so that the problem that the oxygen content of the flue gas of enterprises is generally high and cannot be effectively solved is solved, the oxygen content in the high-temperature flue gas can be monitored on line through an oxygen content sensor, the oxygen content in the flue gas is regulated, the enterprises can completely and orderly achieve standard emission, and multiple unstable factors such as unstable flue gas, unstable dust, unstable temperature and the like of the smelting enterprises are solved;
s2, boiler heat exchange
The flue gas and the steam are separated by the waste heat boiler, the temperature of the flue gas is controlled to be the safe temperature required by a dust remover, the stability of the temperature of the flue gas is ensured, a stable and reliable purification environment is provided for a dust removing facility, the temperature of the flue gas after heat exchange can be monitored on line by the temperature sensor, the separated heat energy can be converted into saturated steam or rated value steam required by production according to the requirements of the original smelting process and can be used for enterprise production, or the steam is converted into electric energy by driving a generator set and is used for electrical equipment of an enterprise, the flue gas is collected from a furnace door or a furnace top by a dust hood and then discharged to a chimney in the production process of the smelting furnace, and the temperature of the area can reach about 1000 ℃ at high temperature, so that the flue gas can be reduced to the lowest temperature limit value acceptable by the environmental protection facility and then discharged by the process;
s4, flue gas dust removal and steam recycling
The normal temperature flue gas enters the dust remover through a pipeline to carry out flue gas dust removal treatment, a steam heat source can be distributed to a generator set or heat energy can be provided for the SCR denitration device to supplement heat through the heat exchange device, when a catalyst for denitration treatment is diluted and put into a reaction kettle for pyrolysis, the steam heat source can be distributed to the reaction kettle through the heat exchange device to provide the heat source, the energy consumption of heat used by the reaction kettle is reduced, and the separated heat energy can be converted into saturated steam or rated value steam required by production according to the requirement of the original smelting process and is used for enterprise production; or the steam is converted into electric energy through driving the generator set and is used for electric equipment of enterprises, and the hot steam can be directly sold to third-party users as required, so that the resource utilization rate of the enterprises is improved, the energy consumption is reduced, the waste heat energy of the existing smelting enterprises is effectively utilized and fully utilized, and the waste heat energy is converted into usable energy;
s5, desulfurization, denitration treatment and discharge
The flue gas after dust removal enters an SCR denitration device through a pipeline for denitration treatment to remove nitrogen oxides in the flue gas, the flue gas after denitration treatment enters a desulfurization device through a pipeline to remove sulfur oxides in the flue gas, the flue gas after denitration and desulfurization treatment is discharged from a chimney, the flue gas is purified by a dust removal device and then enters the desulfurization and denitration device, and the possibility of dust pollution of the desulfurization and denitration device is greatly reduced because the dust content in the flue gas reaches the discharge standard, so that the stable operation of a desulfurization and denitration system is ensured, the temperature of the flue gas is controlled at the safe temperature required by the dust remover through a waste heat boiler, the stability of the temperature of the flue gas is ensured, a stable and reliable purification environment is provided for a dust removal facility, the temperature is controlled at the reasonable temperature section of the dust remover, and the fluctuation of the flue gas is small, so that the original high-temperature bag type dust remover can be modified into a normal-temperature bag type dust remover through the system, or other normal temperature dust remover systems, the maintenance degree of difficulty and the maintenance cost of saving the dust remover by a wide margin to whole improve equipment life, thereby for enterprise reduction in production cost, with the secondary heat energy rational utilization that produces in the smelting process, reduce the flue gas discharge temperature, provide environmental protection equipment utilization ratio.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (4)
1. Smelt heat recovery and carbon in and synthesize circulation system, including consuming oxygen device, boiler heat transfer system, dust collector, SCR denitrification facility, desulphurization unit and smelting furnace, its characterized in that: the smelting furnace and the oxygen consumption device are connected with each other through a high-temperature resistant flue, the oxygen consumption device and the boiler heat exchange system are connected with each other through a high-temperature resistant flue, the boiler heat exchange system and the dust removal device are connected with each other through a pipeline, the dust removal device and the SCR denitration device are connected with each other through a pipeline, the SCR device and the desulfurization device are connected with each other through a pipeline, and the desulfurization device and the chimney are connected with each other through a pipeline;
the boiler heat exchange system comprises a waste heat boiler and a heat exchange system;
the oxygen consumption device comprises a gas combustion furnace, a temperature sensor and an oxygen content sensor.
2. The smelting heat energy recovery and carbon neutralization integrated cycle system of claim 1, wherein: the oxygen consumption device mainly aims to reduce the oxygen content to 9-12% by burning more than 12% of oxygen in high-temperature flue gas in a gas combustion mode.
3. The smelting heat energy recovery and carbon neutralization integrated cycle system of claim 1, wherein: the waste heat boiler efficiently recovers heat energy in the flue gas, effectively separates the heat energy, controls the temperature of the flue gas to be safe temperature required by the dust removal device, the heat exchange system is used for distributing heat sources, and the dust removal device is a normal-temperature bag type dust remover.
4. The smelting heat energy recovery and carbon neutralization integrated cycle system of claim 1, wherein: the working process of the smelting heat energy recovery and carbon neutralization comprehensive circulation system comprises the following steps:
s1, oxygen consumption
High-temperature flue gas generated by the working of a smelting furnace enters a gas combustion furnace in an oxygen consumption device through a high-temperature resistant flue, the oxygen content in the high-temperature flue gas is reduced to 9-12% in a gas combustion mode, the standard emission index of the oxygen content of the flue gas meeting the national environmental protection policy requirements is met, and the oxygen content in the high-temperature flue gas can be monitored on line through an oxygen content sensor;
s2, boiler heat exchange
The flue gas and the steam are separated by the waste heat boiler, the temperature of the flue gas is controlled to be the safe temperature required by the dust remover, the stability of the temperature of the flue gas is ensured, a stable and reliable purification environment is provided for a dust removal facility, the temperature of the flue gas after heat exchange can be monitored on line by the temperature sensor, the separated heat energy can be converted into saturated steam or rated value steam required by production according to the requirements of the original smelting process and can be used for enterprise production, or the steam is converted into electric energy by driving a generator set and is used for electric equipment of enterprises;
s4, flue gas dust removal and steam recycling
The normal temperature flue gas enters the dust remover through the pipeline for flue gas dust removal treatment, a steam heat source can be distributed to a generator set or heat energy can be provided for the SCR denitration device to supplement heat through the heat exchange device, and when the catalyst for denitration treatment is diluted and put into the reaction kettle for pyrolysis, the steam heat source can be distributed to the reaction kettle through the heat exchange device to provide the heat source, so that the energy consumption of heat consumption of the reaction kettle is reduced;
s5, desulfurization, denitration treatment and discharge
The flue gas after dust removal enters an SCR denitration device through a pipeline for denitration treatment, nitrogen oxides in the flue gas are removed, the flue gas after denitration treatment enters a desulfurization device through a pipeline, sulfur oxides in the flue gas are removed, and the flue gas after denitration and desulfurization treatment is discharged from a chimney.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115301056A (en) * | 2022-08-31 | 2022-11-08 | 阳江翌川金属科技有限公司 | Denitration flue gas interlocking control system and denitration process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115301056A (en) * | 2022-08-31 | 2022-11-08 | 阳江翌川金属科技有限公司 | Denitration flue gas interlocking control system and denitration process |
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