CN212299900U - Secondary aluminum smelting oxy-fuel combustion device - Google Patents
Secondary aluminum smelting oxy-fuel combustion device Download PDFInfo
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- CN212299900U CN212299900U CN202021487456.2U CN202021487456U CN212299900U CN 212299900 U CN212299900 U CN 212299900U CN 202021487456 U CN202021487456 U CN 202021487456U CN 212299900 U CN212299900 U CN 212299900U
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Abstract
The utility model discloses a secondary aluminum smelting total oxygen combustion device, which consists of a control valve group, a burning gun and an electrical control system, wherein the control valve group comprises a gas path control valve group and an oxygen path control valve group, each path of control valve group comprises a filter, a pressure reducing valve, a pressure transmitter, a safety cut-off valve, a temperature transmitter, a flowmeter, a flow regulating valve and other structures, the gas path and the oxygen path control valve group are connected with the gas source at the input end, and the output end is connected to the burning gun; the electric control system consists of a CPU, an operation panel, a power supply system and the like. The utility model discloses the device has realized the application of oxy-fuel combustion smelting mode in the secondary aluminum smelting field, has effectively reduced the gas consumption, has promoted and has smelted the efficiency, compares in traditional heat accumulation formula burning and has promoted the melting speed of secondary aluminum greatly, can not produce a large amount of nitrogen oxides in the smelting process simultaneously.
Description
Technical Field
The utility model relates to a secondary aluminum smelting oxy-fuel combustion device, which belongs to the technical field of secondary aluminum smelting.
Background
At present, the renewable aluminum smelting field in China mostly adopts an air combustion-supporting mode for smelting, only 21% of oxygen participates in combustion supporting in the smelting process, nitrogen with the content as high as 78% in the air does not participate in combustion, and a large amount of heat can be carried and discharged into the atmosphere from a kiln flue, so that a large amount of waste of the heat is caused; meanwhile, nitrogen reacts with combustion residual oxygen to generate nitrogen oxides which are discharged into the atmosphere at the temperature of the kiln over 800 ℃, so that the ozone layer is damaged, and the global climate is warmed.
Because the heat efficiency of the traditional combustion mode is low, in recent years, a process of adopting a regenerative combustion burner is researched in the field of secondary aluminum smelting, namely, the process of mixing natural gas after preheating air is used for combustion, so that the kiln energy efficiency is improved to some extent compared with the prior art, but test data show that the heat efficiency of the kiln of the mode can only reach 31% -35%, and therefore, a smelting mode with higher energy efficiency is urgently needed in the field of secondary aluminum smelting.
A system which adopts air with oxygen content more than or equal to 85 percent to participate in combustion in the smelting field is called as a total oxygen combustion system. When the oxy-fuel combustion mode is adopted, no nitrogen passes through the kiln, so a large amount of nitrogen oxides cannot be generated in the smelting process, and the subsequent denitration treatment steps are reduced; and because no excess gas exists, the heat stays in the kiln for a longer time, so the heat efficiency in the smelting process is higher, and the effect of saving fuel gas is achieved. In the domestic secondary aluminum smelting industry, the oxy-fuel combustion technology is not used, so that an oxy-fuel combustion device designed aiming at the process and technical characteristics in the secondary aluminum smelting process is urgently needed.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved by the utility model
For solving the problem that the gas efficiency of current secondary aluminum smelting in-process is low, nitrogen oxide discharge capacity is high, the utility model provides a towards the oxy-fuel combustion device of secondary aluminum smelting field.
Technical scheme
In order to solve the technical problem, the utility model discloses a following technical scheme:
a regenerated aluminum smelting oxy-fuel combustion device comprises a control valve set, a burning gun and an electrical control system, wherein the control valve set consists of a gas path control valve set and an oxygen path control valve set, and the two paths of control valve sets comprise a filter, a pressure reducing valve, a pressure transmitter, a safety cut-off valve, a temperature transmitter, a flowmeter and a flow regulating valve and are sequentially connected through a gas path; the input end of the gas path and the oxygen path control valve set is connected with a gas source, and the output end is connected with the burning gun;
the electric control system comprises a CPU, an operation panel and a power supply system, and is connected with the two-way control valve set pressure transmitter, the safety cut-off valve, the temperature transmitter, the flowmeter and the flow regulating valve.
Furthermore, gas circuit valve unit and oxygen gas circuit valve unit all contain a main road and a plurality of branch road, and each branch road all is equipped with flowmeter and flow control valve, and the burning gun includes main road burning gun and each branch road burning gun simultaneously, and the output of gas circuit valve unit main road and oxygen gas circuit valve unit main road is connected to main road burning gun, and the output of each branch road of gas circuit valve unit and each branch road of oxygen gas circuit valve unit is connected to branch road burning gun.
Furthermore, the burning gun is composed of an oxygen main body and a gas main body, the gas main body is embedded in the oxygen main body, the oxygen main body and the gas main body use a public outlet, the oxygen main body is in output connection with the oxygen path control valve group, and the gas main body is in output connection with the gas path control valve group.
Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
the utility model discloses the device has realized the application of oxy-fuel combustion smelting mode in the secondary aluminum smelting field, has effectively reduced the gas consumption, has promoted the smelting efficiency.
The utility model discloses the device can not produce a large amount of nitrogen oxides when the secondary aluminum is smelted, has effectively reduced processing steps such as smelting follow-up denitration, compares simultaneously in traditional heat accumulation formula burning and has promoted the thermal efficiency, has accelerated the melting speed of aluminium greatly.
The utility model discloses simple structure easily realizes, is convenient for smelt the field popularization and application at the secondary aluminum.
Drawings
Fig. 1 is a diagram of the connection relationship and the composition of the device of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
As shown in fig. 1, the secondary aluminum smelting oxy-fuel combustion device is composed of a control valve group, a burning gun and an electrical control system, wherein the control valve group is composed of a fuel gas path control valve group and an oxygen gas path control valve group, the control valve group is composed of a filter, a pressure reducing valve, a pressure transmitter, a safety cut-off valve, a temperature transmitter, a flowmeter and a flow regulating valve which are connected in sequence by gas paths, and the filter filters gas entering the gas path; the pressure reducing valve reduces the pressure of the gas in the gas path, so that the gas entering the valve group is in a designed pressure range, and the stability of the gas flow is ensured; the pressure transmitter is used for detecting the pressure in the gas path pipeline, converting the flow in the working state into the flow under the standard atmospheric pressure and displaying the flow on the flowmeter; the temperature transmitter is used for detecting the temperature of the gas path pipeline, converting the gas path flow in the working state into the flow under 0 ℃ and displaying the flow on the flowmeter; the safety cut-off valve is used for cutting off the gas circuit of oxygen and fuel gas in an emergency state, so that the safety is ensured; the flowmeter is used for detecting the gas flow passing through the branch; the flow regulating valve is used for regulating the gas flow of the branch pipeline; the control valve group comprises a safety shut-off valve, a flow regulating valve and other elements which are connected with a compressed air source to obtain power air required by the work of the control valve group. The gas path control valve group and the oxygen path control valve group both comprise a main path and a plurality of branches, and each branch is provided with a flowmeter and a flow regulating valve for monitoring and regulating the gas flow of the branch.
The burning torch comprises oxygen main part and gas main part, and the gas main part is embedded inside the oxygen main part, and the two uses public export, and every gas of this device all has its burning torch that corresponds with the oxygen branch road, and the input of burning torch is connected with its output that corresponds oxygen branch road and gas branch road respectively, and each burning torch is deepened respectively and is smelted inside the kiln.
The electric control system is mainly used for detecting parameters such as pressure, temperature and flow inside a gas and oxygen gas path channel, temperature and pressure inside a kiln and the like, and adjusting elements such as a safety shut-off valve and a flow adjusting valve according to detection data, so that the gas flow and the pressure and temperature inside the kiln in the smelting process are kept stable, and the smelting process is ensured to be carried out safely and reliably. The electric control system consists of a CPU, an operation panel and a power supply system. The CPU is used for receiving signals of pressure, temperature, flow and the like transmitted by the control valve group and displaying the signals on the operation panel, receiving control information sent by the operation panel and realizing accurate flow output of the device; the operation panel is an interface between an operator and the device, and when the device is used, control data can be set on the operation panel according to requirements and transmitted to the CPU to complete functions of flow regulation of the control valve bank, oxygen and gas ratio regulation, safety cut-off threshold regulation and the like; the power supply system supplies power to the whole electrical control system.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (3)
1. The regenerated aluminum smelting oxy-fuel combustion device is characterized by comprising a control valve group, a burning gun and an electrical control system, wherein the control valve group consists of a gas path control valve group and an oxygen path control valve group, the control valve group comprises a filter, a pressure reducing valve, a pressure transmitter, a safety cut-off valve, a temperature transmitter, a flowmeter and a flow regulating valve, and the filter, the pressure reducing valve, the pressure transmitter, the safety cut-off valve, the temperature transmitter, the flowmeter and the flow regulating valve are sequentially connected through a gas path; the input ends of the gas path and the oxygen path control valve set are connected with a gas source, and the output ends are connected to the burning gun;
the electric control system comprises a CPU, an operation panel and a power supply system, and is connected with the gas circuit, the oxygen circuit control valve group pressure transmitter, the safety shut-off valve, the temperature transmitter, the flowmeter and the flow regulating valve.
2. A secondary aluminum smelting oxy-fuel combustion device as claimed in claim 1, wherein the gas and oxygen control valves each comprise a main circuit and a plurality of branches, each branch is provided with a flow meter and a flow control valve, the burner comprises a main burner and each branch burner, wherein the main burner input is connected with the output of the main circuit of the gas and oxygen control valves, and each branch burner input is connected with the output of each branch of the gas and oxygen control valves.
3. The secondary aluminum smelting oxy-fuel combustion device as claimed in claim 1, wherein the burning gun is composed of an oxygen main body and a gas main body, the gas main body is embedded in the oxygen main body, the oxygen main body and the gas main body use a common outlet, the oxygen main body is connected with the output of the oxygen control valve bank, and the gas main body is connected with the output of the gas control valve bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487456.2U CN212299900U (en) | 2020-07-24 | 2020-07-24 | Secondary aluminum smelting oxy-fuel combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487456.2U CN212299900U (en) | 2020-07-24 | 2020-07-24 | Secondary aluminum smelting oxy-fuel combustion device |
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| Publication Number | Publication Date |
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| CN212299900U true CN212299900U (en) | 2021-01-05 |
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| CN202021487456.2U Active CN212299900U (en) | 2020-07-24 | 2020-07-24 | Secondary aluminum smelting oxy-fuel combustion device |
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| CN (1) | CN212299900U (en) |
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